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chromium / chromium / src / dfe9acda5 / . / ui / gfx / render_text_unittest.cc
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gfx/render_text.h"
#include <limits.h>
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <memory>
#include "base/format_macros.h"
#include "base/i18n/break_iterator.h"
#include "base/macros.h"
#include "base/run_loop.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "build/build_config.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkRefCnt.h"
#include "third_party/skia/include/core/SkSurface.h"
#include "third_party/skia/include/core/SkTypeface.h"
#include "ui/gfx/break_list.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/font.h"
#include "ui/gfx/geometry/point.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/range/range.h"
#include "ui/gfx/range/range_f.h"
#include "ui/gfx/render_text_harfbuzz.h"
#include "ui/gfx/text_utils.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#include "ui/gfx/platform_font_win.h"
#endif
#if defined(OS_MACOSX)
#include <ApplicationServices/ApplicationServices.h>
#include "ui/gfx/render_text_mac.h"
#endif
using base::ASCIIToUTF16;
using base::UTF8ToUTF16;
using base::WideToUTF16;
using base::WideToUTF8;
namespace gfx {
namespace test {
class RenderTextTestApi {
public:
RenderTextTestApi(RenderText* render_text) : render_text_(render_text) {}
static SkPaint& GetRendererPaint(internal::SkiaTextRenderer* renderer) {
return renderer->paint_;
}
static internal::TextRunList* GetHarfbuzzRunList(
RenderTextHarfBuzz* harfbuzz) {
return harfbuzz->GetRunList();
}
void DrawVisualText(internal::SkiaTextRenderer* renderer) {
render_text_->EnsureLayout();
render_text_->DrawVisualText(renderer);
}
private:
RenderText* render_text_;
DISALLOW_COPY_AND_ASSIGN(RenderTextTestApi);
};
} // namespace test
namespace {
// Various weak, LTR, RTL, and Bidi string cases with three characters each.
const wchar_t kWeak[] = L" . ";
const wchar_t kLtr[] = L"abc";
const wchar_t kRtl[] = L"\x5d0\x5d1\x5d2";
const wchar_t kLtrRtl[] = L"a" L"\x5d0\x5d1";
const wchar_t kLtrRtlLtr[] = L"a" L"\x5d1" L"b";
const wchar_t kRtlLtr[] = L"\x5d0\x5d1" L"a";
const wchar_t kRtlLtrRtl[] = L"\x5d0" L"a" L"\x5d1";
// Checks whether |range| contains |index|. This is not the same as calling
// range.Contains(Range(index)), which returns true if |index| == |range.end()|.
bool IndexInRange(const Range& range, size_t index) {
return index >= range.start() && index < range.end();
}
base::string16 GetSelectedText(RenderText* render_text) {
return render_text->text().substr(render_text->selection().GetMin(),
render_text->selection().length());
}
// A test utility function to set the application default text direction.
void SetRTL(bool rtl) {
// Override the current locale/direction.
base::i18n::SetICUDefaultLocale(rtl ? "he" : "en");
EXPECT_EQ(rtl, base::i18n::IsRTL());
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
// Ensure cursor movement in the specified |direction| yields |expected| values.
void RunMoveCursorLeftRightTest(RenderText* render_text,
const std::vector<SelectionModel>& expected,
VisualCursorDirection direction) {
for (size_t i = 0; i < expected.size(); ++i) {
SCOPED_TRACE(base::StringPrintf("Going %s; expected value index %d.",
direction == CURSOR_LEFT ? "left" : "right", static_cast<int>(i)));
EXPECT_EQ(expected[i], render_text->selection_model());
render_text->MoveCursor(CHARACTER_BREAK, direction, false);
}
// Check that cursoring is clamped at the line edge.
EXPECT_EQ(expected.back(), render_text->selection_model());
// Check that it is the line edge.
render_text->MoveCursor(LINE_BREAK, direction, false);
EXPECT_EQ(expected.back(), render_text->selection_model());
}
#endif // !defined(OS_MACOSX)
// The class which records the drawing operations so that the test case can
// verify where exactly the glyphs are drawn.
class TestSkiaTextRenderer : public internal::SkiaTextRenderer {
public:
struct TextLog {
TextLog() : glyph_count(0u), color(SK_ColorTRANSPARENT) {}
PointF origin;
size_t glyph_count;
SkColor color;
};
struct DecorationLog {
DecorationLog(int x, int y, int width, bool underline, bool strike,
bool diagonal_strike)
: x(x), y(y), width(width), underline(underline), strike(strike),
diagonal_strike(diagonal_strike) {}
int x;
int y;
int width;
bool underline;
bool strike;
bool diagonal_strike;
};
explicit TestSkiaTextRenderer(Canvas* canvas)
: internal::SkiaTextRenderer(canvas) {}
~TestSkiaTextRenderer() override {}
void GetTextLogAndReset(std::vector<TextLog>* text_log) {
text_log_.swap(*text_log);
text_log_.clear();
}
void GetDecorationLogAndReset(std::vector<DecorationLog>* decoration_log) {
decoration_log_.swap(*decoration_log);
decoration_log_.clear();
}
private:
// internal::SkiaTextRenderer:
void DrawPosText(const SkPoint* pos,
const uint16_t* glyphs,
size_t glyph_count) override {
TextLog log_entry;
log_entry.glyph_count = glyph_count;
if (glyph_count > 0) {
log_entry.origin =
PointF(SkScalarToFloat(pos[0].x()), SkScalarToFloat(pos[0].y()));
for (size_t i = 1U; i < glyph_count; ++i) {
log_entry.origin.SetToMin(
PointF(SkScalarToFloat(pos[i].x()), SkScalarToFloat(pos[i].y())));
}
}
log_entry.color =
test::RenderTextTestApi::GetRendererPaint(this).getColor();
text_log_.push_back(log_entry);
internal::SkiaTextRenderer::DrawPosText(pos, glyphs, glyph_count);
}
void DrawDecorations(int x, int y, int width, bool underline, bool strike,
bool diagonal_strike) override {
decoration_log_.push_back(
DecorationLog(x, y, width, underline, strike, diagonal_strike));
internal::SkiaTextRenderer::DrawDecorations(
x, y, width, underline, strike, diagonal_strike);
}
std::vector<TextLog> text_log_;
std::vector<DecorationLog> decoration_log_;
DISALLOW_COPY_AND_ASSIGN(TestSkiaTextRenderer);
};
// Given a buffer to test against, this can be used to test various areas of the
// rectangular buffer against a specific color value.
class TestRectangleBuffer {
public:
TestRectangleBuffer(const wchar_t* string,
const SkColor* buffer,
uint32_t stride,
uint32_t row_count)
: string_(string),
buffer_(buffer),
stride_(stride),
row_count_(row_count) {}
// Test if any values in the rectangular area are anything other than |color|.
void EnsureSolidRect(SkColor color,
int left,
int top,
int width,
int height) const {
ASSERT_LT(top, row_count_) << string_;
ASSERT_LE(top + height, row_count_) << string_;
ASSERT_LT(left, stride_) << string_;
ASSERT_LE(left + width, stride_) << string_ << ", left " << left
<< ", width " << width << ", stride_ "
<< stride_;
for (int y = top; y < top + height; ++y) {
for (int x = left; x < left + width; ++x) {
SkColor buffer_color = buffer_[x + y * stride_];
EXPECT_EQ(color, buffer_color) << string_ << " at " << x << ", " << y;
}
}
}
private:
const wchar_t* string_;
const SkColor* buffer_;
int stride_;
int row_count_;
DISALLOW_COPY_AND_ASSIGN(TestRectangleBuffer);
};
// Helper to run the same test expectations on all RenderText backends.
class RenderTextAllBackends {
public:
RenderTextAllBackends() : renderer_(&canvas_), current_(nullptr) {}
bool Advance() {
if (!current_) {
current_ = &render_text_harfbuzz_;
return true;
}
#if defined(OS_MACOSX)
if (current_ == &render_text_harfbuzz_) {
current_ = &render_text_mac_;
return true;
}
#endif
return false;
}
const char* GetName() const {
return current_ == &render_text_harfbuzz_ ? "Harfbuzz" : "Mac";
}
RenderText* operator->() {
return current_;
}
void DrawVisualText() {
test::RenderTextTestApi test_api(current_);
test_api.DrawVisualText(&renderer_);
}
void GetTextLogAndReset(std::vector<TestSkiaTextRenderer::TextLog>* log) {
renderer_.GetTextLogAndReset(log);
}
SkPaint& paint() {
return test::RenderTextTestApi::GetRendererPaint(&renderer_);
}
internal::TextRunList* GetHarfbuzzRunList() {
return test::RenderTextTestApi::GetHarfbuzzRunList(&render_text_harfbuzz_);
}
private:
Canvas canvas_;
TestSkiaTextRenderer renderer_;
RenderText* current_;
RenderTextHarfBuzz render_text_harfbuzz_;
#if defined(OS_MACOSX)
RenderTextMac render_text_mac_;
#endif
DISALLOW_COPY_AND_ASSIGN(RenderTextAllBackends);
};
} // namespace
class RenderTextTest : public testing::Test {
private:
#if defined(OS_WIN)
// Needed to bypass DCHECK in GetFallbackFont.
base::MessageLoopForUI message_loop_;
#endif
};
TEST_F(RenderTextTest, DefaultStyles) {
// Check the default styles applied to new instances and adjusted text.
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
EXPECT_TRUE(render_text->text().empty());
const wchar_t* const cases[] = { kWeak, kLtr, L"Hello", kRtl, L"", L"" };
for (size_t i = 0; i < arraysize(cases); ++i) {
EXPECT_TRUE(render_text->colors().EqualsValueForTesting(SK_ColorBLACK));
EXPECT_TRUE(
render_text->baselines().EqualsValueForTesting(NORMAL_BASELINE));
for (size_t style = 0; style < NUM_TEXT_STYLES; ++style)
EXPECT_TRUE(render_text->styles()[style].EqualsValueForTesting(false));
render_text->SetText(WideToUTF16(cases[i]));
}
}
TEST_F(RenderTextTest, SetStyles) {
// Ensure custom default styles persist across setting and clearing text.
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
const SkColor color = SK_ColorRED;
render_text->SetColor(color);
render_text->SetBaselineStyle(SUPERSCRIPT);
render_text->SetWeight(Font::Weight::BOLD);
render_text->SetStyle(UNDERLINE, false);
const wchar_t* const cases[] = { kWeak, kLtr, L"Hello", kRtl, L"", L"" };
for (size_t i = 0; i < arraysize(cases); ++i) {
EXPECT_TRUE(render_text->colors().EqualsValueForTesting(color));
EXPECT_TRUE(render_text->baselines().EqualsValueForTesting(SUPERSCRIPT));
EXPECT_TRUE(
render_text->weights().EqualsValueForTesting(Font::Weight::BOLD));
EXPECT_TRUE(render_text->styles()[UNDERLINE].EqualsValueForTesting(false));
render_text->SetText(WideToUTF16(cases[i]));
// Ensure custom default styles can be applied after text has been set.
if (i == 1)
render_text->SetStyle(STRIKE, true);
if (i >= 1)
EXPECT_TRUE(render_text->styles()[STRIKE].EqualsValueForTesting(true));
}
}
TEST_F(RenderTextTest, ApplyStyles) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("012345678"));
// Apply a ranged color and style and check the resulting breaks.
render_text->ApplyColor(SK_ColorRED, Range(1, 4));
render_text->ApplyBaselineStyle(SUPERIOR, Range(2, 4));
render_text->ApplyWeight(Font::Weight::BOLD, Range(2, 5));
std::vector<std::pair<size_t, SkColor> > expected_color;
expected_color.push_back(std::pair<size_t, SkColor>(0, SK_ColorBLACK));
expected_color.push_back(std::pair<size_t, SkColor>(1, SK_ColorRED));
expected_color.push_back(std::pair<size_t, SkColor>(4, SK_ColorBLACK));
EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color));
std::vector<std::pair<size_t, BaselineStyle>> expected_baseline_style;
expected_baseline_style.push_back(
std::pair<size_t, BaselineStyle>(0, NORMAL_BASELINE));
expected_baseline_style.push_back(
std::pair<size_t, BaselineStyle>(2, SUPERIOR));
expected_baseline_style.push_back(
std::pair<size_t, BaselineStyle>(4, NORMAL_BASELINE));
EXPECT_TRUE(
render_text->baselines().EqualsForTesting(expected_baseline_style));
std::vector<std::pair<size_t, Font::Weight>> expected_weight;
expected_weight.push_back(
std::pair<size_t, Font::Weight>(0, Font::Weight::NORMAL));
expected_weight.push_back(
std::pair<size_t, Font::Weight>(2, Font::Weight::BOLD));
expected_weight.push_back(
std::pair<size_t, Font::Weight>(5, Font::Weight::NORMAL));
EXPECT_TRUE(render_text->weights().EqualsForTesting(expected_weight));
// Ensure that setting a value overrides the ranged values.
render_text->SetColor(SK_ColorBLUE);
EXPECT_TRUE(render_text->colors().EqualsValueForTesting(SK_ColorBLUE));
render_text->SetBaselineStyle(SUBSCRIPT);
EXPECT_TRUE(render_text->baselines().EqualsValueForTesting(SUBSCRIPT));
render_text->SetWeight(Font::Weight::NORMAL);
EXPECT_TRUE(
render_text->weights().EqualsValueForTesting(Font::Weight::NORMAL));
// Apply a value over the text end and check the resulting breaks (INT_MAX
// should be used instead of the text length for the range end)
const size_t text_length = render_text->text().length();
render_text->ApplyColor(SK_ColorRED, Range(0, text_length));
render_text->ApplyBaselineStyle(SUPERIOR, Range(0, text_length));
render_text->ApplyWeight(Font::Weight::BOLD, Range(2, text_length));
std::vector<std::pair<size_t, SkColor> > expected_color_end;
expected_color_end.push_back(std::pair<size_t, SkColor>(0, SK_ColorRED));
EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color_end));
std::vector<std::pair<size_t, BaselineStyle>> expected_baseline_end;
expected_baseline_end.push_back(
std::pair<size_t, BaselineStyle>(0, SUPERIOR));
EXPECT_TRUE(render_text->baselines().EqualsForTesting(expected_baseline_end));
std::vector<std::pair<size_t, Font::Weight>> expected_weight_end;
expected_weight_end.push_back(
std::pair<size_t, Font::Weight>(0, Font::Weight::NORMAL));
expected_weight_end.push_back(
std::pair<size_t, Font::Weight>(2, Font::Weight::BOLD));
EXPECT_TRUE(render_text->weights().EqualsForTesting(expected_weight_end));
// Ensure ranged values adjust to accommodate text length changes.
render_text->ApplyStyle(ITALIC, true, Range(0, 2));
render_text->ApplyStyle(ITALIC, true, Range(3, 6));
render_text->ApplyStyle(ITALIC, true, Range(7, text_length));
std::vector<std::pair<size_t, bool> > expected_italic;
expected_italic.push_back(std::pair<size_t, bool>(0, true));
expected_italic.push_back(std::pair<size_t, bool>(2, false));
expected_italic.push_back(std::pair<size_t, bool>(3, true));
expected_italic.push_back(std::pair<size_t, bool>(6, false));
expected_italic.push_back(std::pair<size_t, bool>(7, true));
EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic));
// Changing the text should clear any breaks except for the first one.
render_text->SetText(ASCIIToUTF16("0123456"));
expected_italic.resize(1);
EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic));
render_text->ApplyStyle(ITALIC, false, Range(2, 4));
render_text->SetText(ASCIIToUTF16("012345678"));
EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic));
render_text->ApplyStyle(ITALIC, false, Range(0, 1));
render_text->SetText(ASCIIToUTF16("0123456"));
expected_italic.begin()->second = false;
EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic));
render_text->ApplyStyle(ITALIC, true, Range(2, 4));
render_text->SetText(ASCIIToUTF16("012345678"));
EXPECT_TRUE(render_text->styles()[ITALIC].EqualsForTesting(expected_italic));
// TODO(tmoniuszko): Enable when RenderTextMac::IsValidCursorIndex is
// implemented.
#if !defined(OS_MACOSX)
// Styles shouldn't be changed mid-grapheme.
render_text->SetText(WideToUTF16(
L"0" L"\x0915\x093f" L"1" L"\x0915\x093f" L"2"));
render_text->ApplyStyle(UNDERLINE, true, Range(2, 5));
std::vector<std::pair<size_t, bool> > expected_underline;
expected_underline.push_back(std::pair<size_t, bool>(0, false));
expected_underline.push_back(std::pair<size_t, bool>(1, true));
expected_underline.push_back(std::pair<size_t, bool>(6, false));
EXPECT_TRUE(render_text->styles()[UNDERLINE].EqualsForTesting(
expected_underline));
#endif // !defined(OS_MACOSX)
}
TEST_F(RenderTextTest, AppendTextKeepsStyles) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// Setup basic functionality.
render_text->SetText(ASCIIToUTF16("abc"));
render_text->ApplyColor(SK_ColorRED, Range(0, 1));
render_text->ApplyBaselineStyle(SUPERSCRIPT, Range(1, 2));
render_text->ApplyStyle(UNDERLINE, true, Range(2, 3));
// Verify basic functionality.
std::vector<std::pair<size_t, SkColor>> expected_color;
expected_color.push_back(std::pair<size_t, SkColor>(0, SK_ColorRED));
expected_color.push_back(std::pair<size_t, SkColor>(1, SK_ColorBLACK));
EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color));
std::vector<std::pair<size_t, BaselineStyle>> expected_baseline;
expected_baseline.push_back(
std::pair<size_t, BaselineStyle>(0, NORMAL_BASELINE));
expected_baseline.push_back(std::pair<size_t, BaselineStyle>(1, SUPERSCRIPT));
expected_baseline.push_back(
std::pair<size_t, BaselineStyle>(2, NORMAL_BASELINE));
EXPECT_TRUE(render_text->baselines().EqualsForTesting(expected_baseline));
std::vector<std::pair<size_t, bool>> expected_style;
expected_style.push_back(std::pair<size_t, bool>(0, false));
expected_style.push_back(std::pair<size_t, bool>(2, true));
EXPECT_TRUE(
render_text->styles()[UNDERLINE].EqualsForTesting(expected_style));
// Ensure AppendText maintains current text styles.
render_text->AppendText(ASCIIToUTF16("def"));
EXPECT_EQ(render_text->GetDisplayText(), ASCIIToUTF16("abcdef"));
EXPECT_TRUE(render_text->colors().EqualsForTesting(expected_color));
EXPECT_TRUE(render_text->baselines().EqualsForTesting(expected_baseline));
EXPECT_TRUE(
render_text->styles()[UNDERLINE].EqualsForTesting(expected_style));
}
void TestVisualCursorMotionInObscuredField(RenderText* render_text,
const base::string16& text,
bool select) {
ASSERT_TRUE(render_text->obscured());
render_text->SetText(text);
int len = text.length();
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, select);
EXPECT_EQ(SelectionModel(Range(select ? 0 : len, len), CURSOR_FORWARD),
render_text->selection_model());
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, select);
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
for (int j = 1; j <= len; ++j) {
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, select);
EXPECT_EQ(SelectionModel(Range(select ? 0 : j, j), CURSOR_BACKWARD),
render_text->selection_model());
}
for (int j = len - 1; j >= 0; --j) {
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, select);
EXPECT_EQ(SelectionModel(Range(select ? 0 : j, j), CURSOR_FORWARD),
render_text->selection_model());
}
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, select);
EXPECT_EQ(SelectionModel(Range(select ? 0 : len, len), CURSOR_FORWARD),
render_text->selection_model());
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, select);
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, ObscuredText) {
const base::string16 seuss = ASCIIToUTF16("hop on pop");
const base::string16 no_seuss = ASCIIToUTF16("**********");
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// GetLayoutText() returns asterisks when the obscured bit is set.
render_text->SetText(seuss);
render_text->SetObscured(true);
EXPECT_EQ(seuss, render_text->text());
EXPECT_EQ(no_seuss, render_text->GetDisplayText());
render_text->SetObscured(false);
EXPECT_EQ(seuss, render_text->text());
EXPECT_EQ(seuss, render_text->GetDisplayText());
render_text->SetObscured(true);
// Surrogate pairs are counted as one code point.
const base::char16 invalid_surrogates[] = {0xDC00, 0xD800, 0};
render_text->SetText(invalid_surrogates);
EXPECT_EQ(ASCIIToUTF16("**"), render_text->GetDisplayText());
const base::char16 valid_surrogates[] = {0xD800, 0xDC00, 0};
render_text->SetText(valid_surrogates);
EXPECT_EQ(ASCIIToUTF16("*"), render_text->GetDisplayText());
EXPECT_EQ(0U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(2U, render_text->cursor_position());
// Test index conversion and cursor validity with a valid surrogate pair.
EXPECT_EQ(0U, render_text->TextIndexToDisplayIndex(0U));
EXPECT_EQ(1U, render_text->TextIndexToDisplayIndex(1U));
EXPECT_EQ(1U, render_text->TextIndexToDisplayIndex(2U));
EXPECT_EQ(0U, render_text->DisplayIndexToTextIndex(0U));
EXPECT_EQ(2U, render_text->DisplayIndexToTextIndex(1U));
EXPECT_TRUE(render_text->IsValidCursorIndex(0U));
EXPECT_FALSE(render_text->IsValidCursorIndex(1U));
EXPECT_TRUE(render_text->IsValidCursorIndex(2U));
// FindCursorPosition() should not return positions between a surrogate pair.
render_text->SetDisplayRect(Rect(0, 0, 20, 20));
EXPECT_EQ(render_text->FindCursorPosition(Point(0, 0)).caret_pos(), 0U);
EXPECT_EQ(render_text->FindCursorPosition(Point(20, 0)).caret_pos(), 2U);
for (int x = -1; x <= 20; ++x) {
SelectionModel selection = render_text->FindCursorPosition(Point(x, 0));
EXPECT_TRUE(selection.caret_pos() == 0U || selection.caret_pos() == 2U);
}
// GetGlyphBounds() should yield the entire string bounds for text index 0.
EXPECT_EQ(render_text->GetStringSize().width(),
static_cast<int>(render_text->GetGlyphBounds(0U).length()));
// Cursoring is independent of underlying characters when text is obscured.
const wchar_t* const texts[] = {
kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl, kRtlLtr, kRtlLtrRtl,
L"hop on pop", // Check LTR word boundaries.
L"\x05d0\x05d1 \x05d0\x05d2 \x05d1\x05d2", // Check RTL word boundaries.
};
for (size_t i = 0; i < arraysize(texts); ++i) {
base::string16 text = WideToUTF16(texts[i]);
TestVisualCursorMotionInObscuredField(render_text.get(), text, false);
TestVisualCursorMotionInObscuredField(render_text.get(), text, true);
}
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, RevealObscuredText) {
const base::string16 seuss = ASCIIToUTF16("hop on pop");
const base::string16 no_seuss = ASCIIToUTF16("**********");
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(seuss);
render_text->SetObscured(true);
EXPECT_EQ(seuss, render_text->text());
EXPECT_EQ(no_seuss, render_text->GetDisplayText());
// Valid reveal index and new revealed index clears previous one.
render_text->RenderText::SetObscuredRevealIndex(0);
EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(1);
EXPECT_EQ(ASCIIToUTF16("*o********"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**p*******"), render_text->GetDisplayText());
// Invalid reveal index.
render_text->RenderText::SetObscuredRevealIndex(-1);
EXPECT_EQ(no_seuss, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(seuss.length() + 1);
EXPECT_EQ(no_seuss, render_text->GetDisplayText());
// SetObscured clears the revealed index.
render_text->RenderText::SetObscuredRevealIndex(0);
EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetDisplayText());
render_text->SetObscured(false);
EXPECT_EQ(seuss, render_text->GetDisplayText());
render_text->SetObscured(true);
EXPECT_EQ(no_seuss, render_text->GetDisplayText());
// SetText clears the revealed index.
render_text->SetText(ASCIIToUTF16("new"));
EXPECT_EQ(ASCIIToUTF16("***"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**w"), render_text->GetDisplayText());
render_text->SetText(ASCIIToUTF16("new longer"));
EXPECT_EQ(ASCIIToUTF16("**********"), render_text->GetDisplayText());
// Text with invalid surrogates.
const base::char16 invalid_surrogates[] = {0xDC00, 0xD800, 'h', 'o', 'p', 0};
render_text->SetText(invalid_surrogates);
EXPECT_EQ(ASCIIToUTF16("*****"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(0);
const base::char16 invalid_expect_0[] = {0xDC00, '*', '*', '*', '*', 0};
EXPECT_EQ(invalid_expect_0, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(1);
const base::char16 invalid_expect_1[] = {'*', 0xD800, '*', '*', '*', 0};
EXPECT_EQ(invalid_expect_1, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**h**"), render_text->GetDisplayText());
// Text with valid surrogates before and after the reveal index.
const base::char16 valid_surrogates[] =
{0xD800, 0xDC00, 'h', 'o', 'p', 0xD800, 0xDC00, 0};
render_text->SetText(valid_surrogates);
EXPECT_EQ(ASCIIToUTF16("*****"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(0);
const base::char16 valid_expect_0_and_1[] =
{0xD800, 0xDC00, '*', '*', '*', '*', 0};
EXPECT_EQ(valid_expect_0_and_1, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(1);
EXPECT_EQ(valid_expect_0_and_1, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("*h***"), render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(5);
const base::char16 valid_expect_5_and_6[] =
{'*', '*', '*', '*', 0xD800, 0xDC00, 0};
EXPECT_EQ(valid_expect_5_and_6, render_text->GetDisplayText());
render_text->RenderText::SetObscuredRevealIndex(6);
EXPECT_EQ(valid_expect_5_and_6, render_text->GetDisplayText());
}
TEST_F(RenderTextTest, ObscuredEmoji) {
// Ensures text itemization doesn't crash on obscured multi-char glyphs.
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetObscured(true);
gfx::Canvas canvas;
// Test the "Grinning face with smiling eyes" character followed by 'y'.
render_text->SetText(UTF8ToUTF16("\xF0\x9F\x98\x81y"));
render_text->Draw(&canvas);
// Test two "Camera" characters in a row.
render_text->SetText(UTF8ToUTF16("\xF0\x9F\x93\xB7\xF0\x9F\x93\xB7"));
render_text->Draw(&canvas);
}
// TODO(PORT): Fails for RenderTextMac.
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, ElidedText) {
// TODO(skanuj) : Add more test cases for following
// - RenderText styles.
// - Cross interaction of truncate, elide and obscure.
// - ElideText tests from text_elider.cc.
struct {
const wchar_t* text;
const wchar_t* display_text;
const bool elision_expected;
} cases[] = {
// Strings shorter than the elision width should be laid out in full.
{ L"", L"" , false },
{ L"M", L"" , false },
{ L" . ", L" . " , false },
{ kWeak, kWeak , false },
{ kLtr, kLtr , false },
{ kLtrRtl, kLtrRtl , false },
{ kLtrRtlLtr, kLtrRtlLtr, false },
{ kRtl, kRtl , false },
{ kRtlLtr, kRtlLtr , false },
{ kRtlLtrRtl, kRtlLtrRtl, false },
// Strings as long as the elision width should be laid out in full.
{ L"012ab", L"012ab" , false },
// Long strings should be elided with an ellipsis appended at the end.
{ L"012abc", L"012a\x2026", true },
{ L"012ab" L"\x5d0\x5d1", L"012a\x2026", true },
{ L"012a" L"\x5d1" L"b", L"012a\x2026", true },
// No RLM marker added as digits (012) have weak directionality.
{ L"01" L"\x5d0\x5d1\x5d2", L"01\x5d0\x5d1\x2026", true },
// RLM marker added as "ab" have strong LTR directionality.
{ L"ab" L"\x5d0\x5d1\x5d2", L"ab\x5d0\x5d1\x2026\x200f", true },
// Test surrogate pairs. \xd834\xdd1e forms a single code point U+1D11E;
// \xd834\xdd22 forms a second code point U+1D122. The first should be kept;
// the second removed (no surrogate pair should be partially elided).
{ L"0123\xd834\xdd1e\xd834\xdd22", L"0123\xd834\xdd1e\x2026", true },
// Test combining character sequences. U+0915 U+093F forms a compound glyph;
// U+0915 U+0942 forms a second compound glyph. The first should be kept;
// the second removed (no combining sequence should be partially elided).
{ L"0123\x0915\x093f\x0915\x0942", L"0123\x0915\x093f\x2026", true },
// U+05E9 U+05BC U+05C1 U+05B8 forms a four-character compound glyph. Again,
// it should be either fully elided, or not elided at all. If completely
// elided, an LTR Mark (U+200E) should be added.
{ L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x05c1\x05b8", false },
{ L"0\x05e9\x05bc\x05c1\x05b8", L"0\x2026\x200E" , true },
{ L"01\x05e9\x05bc\x05c1\x05b8", L"01\x2026\x200E" , true },
{ L"012\x05e9\x05bc\x05c1\x05b8", L"012\x2026\x200E" , true },
{ L"012\xF0\x9D\x84\x9E", L"012\xF0\x2026" , true },
};
std::unique_ptr<RenderText> expected_render_text(
RenderText::CreateInstance());
expected_render_text->SetFontList(FontList("serif, Sans serif, 12px"));
expected_render_text->SetDisplayRect(Rect(0, 0, 9999, 100));
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetFontList(FontList("serif, Sans serif, 12px"));
render_text->SetElideBehavior(ELIDE_TAIL);
for (size_t i = 0; i < arraysize(cases); i++) {
SCOPED_TRACE(base::StringPrintf("Testing cases[%" PRIuS "] '%ls'", i,
cases[i].text));
// Compute expected width
expected_render_text->SetText(WideToUTF16(cases[i].display_text));
int expected_width = expected_render_text->GetContentWidth();
base::string16 input = WideToUTF16(cases[i].text);
// Extend the input text to ensure that it is wider than the display_text,
// and so it will get elided.
if (cases[i].elision_expected)
input.append(WideToUTF16(L" MMMMMMMMMMM"));
render_text->SetText(input);
render_text->SetDisplayRect(Rect(0, 0, expected_width, 100));
EXPECT_EQ(input, render_text->text());
EXPECT_EQ(WideToUTF16(cases[i].display_text),
render_text->GetDisplayText());
expected_render_text->SetText(base::string16());
}
}
TEST_F(RenderTextTest, ElidedObscuredText) {
std::unique_ptr<RenderText> expected_render_text(
RenderText::CreateInstance());
expected_render_text->SetFontList(FontList("serif, Sans serif, 12px"));
expected_render_text->SetDisplayRect(Rect(0, 0, 9999, 100));
expected_render_text->SetText(WideToUTF16(L"**\x2026"));
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetFontList(FontList("serif, Sans serif, 12px"));
render_text->SetElideBehavior(ELIDE_TAIL);
render_text->SetDisplayRect(
Rect(0, 0, expected_render_text->GetContentWidth(), 100));
render_text->SetObscured(true);
render_text->SetText(WideToUTF16(L"abcdef"));
EXPECT_EQ(WideToUTF16(L"abcdef"), render_text->text());
EXPECT_EQ(WideToUTF16(L"**\x2026"), render_text->GetDisplayText());
}
TEST_F(RenderTextTest, MultilineElide) {
std::unique_ptr<RenderText> render_text(new RenderTextHarfBuzz);
base::string16 input_text;
// Aim for 3 lines of text.
for (int i = 0; i < 20; ++i)
input_text.append(ASCIIToUTF16("hello world "));
render_text->SetText(input_text);
// Apply a style that tweaks the layout to make sure elision is calculated
// with these styles. This can expose a behavior in layout where text is
// slightly different width. This must be done after |SetText()|.
render_text->ApplyWeight(Font::Weight::BOLD, Range(1, 20));
render_text->ApplyStyle(ITALIC, true, Range(1, 20));
render_text->ApplyStyle(DIAGONAL_STRIKE, true, Range(1, 20));
render_text->SetMultiline(true);
render_text->SetElideBehavior(ELIDE_TAIL);
render_text->SetMaxLines(3);
const Size size = render_text->GetStringSize();
// Fit in 3 lines. (If we knew the width of a word, we could
// anticipate word wrap better.)
render_text->SetDisplayRect(Rect((size.width() + 96) / 3, 0));
// Trigger rendering.
render_text->GetStringSize();
EXPECT_EQ(input_text, render_text->GetDisplayText());
const base::char16 kEllipsisUTF16[] = {0x2026, 0};
base::string16 actual_text;
// Try widening the space gradually, one pixel at a time, trying
// to trigger a failure in layout. There was an issue where, right at
// the edge of a word getting truncated, the estimate would be wrong
// and it would wrap instead.
for (int i = (size.width() - 12) / 3; i < (size.width() + 30) / 3; ++i) {
render_text->SetDisplayRect(Rect(i, 0));
// Trigger rendering.
render_text->GetStringSize();
actual_text = render_text->GetDisplayText();
EXPECT_LT(actual_text.size(), input_text.size());
EXPECT_EQ(actual_text, input_text.substr(0, actual_text.size() - 1) +
base::string16(kEllipsisUTF16));
EXPECT_EQ(3U, render_text->GetNumLines());
}
// Now remove line restriction.
render_text->SetMaxLines(0);
render_text->GetStringSize();
EXPECT_EQ(input_text, render_text->GetDisplayText());
// And put it back.
render_text->SetMaxLines(3);
render_text->GetStringSize();
EXPECT_LT(actual_text.size(), input_text.size());
EXPECT_EQ(actual_text, input_text.substr(0, actual_text.size() - 1) +
base::string16(kEllipsisUTF16));
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, ElidedEmail) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("test@example.com"));
const Size size = render_text->GetStringSize();
const base::string16 long_email =
ASCIIToUTF16("longemailaddresstest@example.com");
render_text->SetText(long_email);
render_text->SetElideBehavior(ELIDE_EMAIL);
render_text->SetDisplayRect(Rect(size));
EXPECT_GE(size.width(), render_text->GetStringSize().width());
EXPECT_GT(long_email.size(), render_text->GetDisplayText().size());
}
TEST_F(RenderTextTest, TruncatedText) {
struct {
const wchar_t* text;
const wchar_t* display_text;
} cases[] = {
// Strings shorter than the truncation length should be laid out in full.
{ L"", L"" },
{ kWeak, kWeak },
{ kLtr, kLtr },
{ kLtrRtl, kLtrRtl },
{ kLtrRtlLtr, kLtrRtlLtr },
{ kRtl, kRtl },
{ kRtlLtr, kRtlLtr },
{ kRtlLtrRtl, kRtlLtrRtl },
// Strings as long as the truncation length should be laid out in full.
{ L"01234", L"01234" },
// Long strings should be truncated with an ellipsis appended at the end.
{ L"012345", L"0123\x2026" },
{ L"012" L" . ", L"012 \x2026" },
{ L"012" L"abc", L"012a\x2026" },
{ L"012" L"a" L"\x5d0\x5d1", L"012a\x2026" },
{ L"012" L"a" L"\x5d1" L"b", L"012a\x2026" },
{ L"012" L"\x5d0\x5d1\x5d2", L"012\x5d0\x2026" },
{ L"012" L"\x5d0\x5d1" L"a", L"012\x5d0\x2026" },
{ L"012" L"\x5d0" L"a" L"\x5d1", L"012\x5d0\x2026" },
// Surrogate pairs should be truncated reasonably enough.
{ L"0123\x0915\x093f", L"0123\x2026" },
{ L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x05c1\x05b8" },
{ L"01\x05e9\x05bc\x05c1\x05b8", L"01\x05e9\x05bc\x2026" },
{ L"012\x05e9\x05bc\x05c1\x05b8", L"012\x05e9\x2026" },
{ L"0123\x05e9\x05bc\x05c1\x05b8", L"0123\x2026" },
{ L"01234\x05e9\x05bc\x05c1\x05b8", L"0123\x2026" },
{ L"012\xF0\x9D\x84\x9E", L"012\xF0\x2026" },
};
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_truncate_length(5);
for (size_t i = 0; i < arraysize(cases); i++) {
render_text->SetText(WideToUTF16(cases[i].text));
EXPECT_EQ(WideToUTF16(cases[i].text), render_text->text());
EXPECT_EQ(WideToUTF16(cases[i].display_text), render_text->GetDisplayText())
<< "For case " << i << ": " << cases[i].text;
}
}
TEST_F(RenderTextTest, TruncatedObscuredText) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_truncate_length(3);
render_text->SetObscured(true);
render_text->SetText(WideToUTF16(L"abcdef"));
EXPECT_EQ(WideToUTF16(L"abcdef"), render_text->text());
EXPECT_EQ(WideToUTF16(L"**\x2026"), render_text->GetDisplayText());
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, TruncatedCursorMovementLTR) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_truncate_length(2);
render_text->SetText(WideToUTF16(L"abcd"));
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(SelectionModel(4, CURSOR_FORWARD), render_text->selection_model());
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
// The cursor hops over the ellipsis and elided text to the line end.
expected.push_back(SelectionModel(4, CURSOR_BACKWARD));
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
expected.clear();
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
// The cursor hops over the elided text to preceeding text.
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
}
TEST_F(RenderTextTest, TruncatedCursorMovementRTL) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_truncate_length(2);
render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3"));
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(SelectionModel(4, CURSOR_FORWARD), render_text->selection_model());
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(SelectionModel(0, CURSOR_BACKWARD), render_text->selection_model());
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
// The cursor hops over the ellipsis and elided text to the line end.
expected.push_back(SelectionModel(4, CURSOR_BACKWARD));
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
expected.clear();
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
// The cursor hops over the elided text to preceeding text.
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, GetDisplayTextDirection) {
struct {
const wchar_t* text;
const base::i18n::TextDirection text_direction;
} cases[] = {
// Blank strings and those with no/weak directionality default to LTR.
{ L"", base::i18n::LEFT_TO_RIGHT },
{ kWeak, base::i18n::LEFT_TO_RIGHT },
// Strings that begin with strong LTR characters.
{ kLtr, base::i18n::LEFT_TO_RIGHT },
{ kLtrRtl, base::i18n::LEFT_TO_RIGHT },
{ kLtrRtlLtr, base::i18n::LEFT_TO_RIGHT },
// Strings that begin with strong RTL characters.
{ kRtl, base::i18n::RIGHT_TO_LEFT },
{ kRtlLtr, base::i18n::RIGHT_TO_LEFT },
{ kRtlLtrRtl, base::i18n::RIGHT_TO_LEFT },
};
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
const bool was_rtl = base::i18n::IsRTL();
for (size_t i = 0; i < 2; ++i) {
// Toggle the application default text direction (to try each direction).
SetRTL(!base::i18n::IsRTL());
const base::i18n::TextDirection ui_direction = base::i18n::IsRTL() ?
base::i18n::RIGHT_TO_LEFT : base::i18n::LEFT_TO_RIGHT;
// Ensure that directionality modes yield the correct text directions.
for (size_t j = 0; j < arraysize(cases); j++) {
render_text->SetText(WideToUTF16(cases[j].text));
render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_TEXT);
EXPECT_EQ(render_text->GetDisplayTextDirection(),cases[j].text_direction);
render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_UI);
EXPECT_EQ(render_text->GetDisplayTextDirection(), ui_direction);
render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_LTR);
EXPECT_EQ(render_text->GetDisplayTextDirection(),
base::i18n::LEFT_TO_RIGHT);
render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_RTL);
EXPECT_EQ(render_text->GetDisplayTextDirection(),
base::i18n::RIGHT_TO_LEFT);
}
}
EXPECT_EQ(was_rtl, base::i18n::IsRTL());
// Ensure that text changes update the direction for DIRECTIONALITY_FROM_TEXT.
render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_TEXT);
render_text->SetText(WideToUTF16(kLtr));
EXPECT_EQ(render_text->GetDisplayTextDirection(), base::i18n::LEFT_TO_RIGHT);
render_text->SetText(WideToUTF16(kRtl));
EXPECT_EQ(render_text->GetDisplayTextDirection(), base::i18n::RIGHT_TO_LEFT);
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, MoveCursorLeftRightInLtr) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// Pure LTR.
render_text->SetText(ASCIIToUTF16("abc"));
// |expected| saves the expected SelectionModel when moving cursor from left
// to right.
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
expected.clear();
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInLtrRtl) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// LTR-RTL
render_text->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2"));
// The last one is the expected END position.
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(5, CURSOR_FORWARD));
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(6, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
expected.clear();
expected.push_back(SelectionModel(6, CURSOR_FORWARD));
expected.push_back(SelectionModel(4, CURSOR_BACKWARD));
expected.push_back(SelectionModel(5, CURSOR_BACKWARD));
expected.push_back(SelectionModel(6, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInLtrRtlLtr) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// LTR-RTL-LTR.
render_text->SetText(WideToUTF16(L"a" L"\x05d1" L"b"));
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
expected.clear();
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInRtl) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// Pure RTL.
render_text->SetText(WideToUTF16(L"\x05d0\x05d1\x05d2"));
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
expected.clear();
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInRtlLtr) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// RTL-LTR
render_text->SetText(WideToUTF16(L"\x05d0\x05d1\x05d2" L"abc"));
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(5, CURSOR_FORWARD));
expected.push_back(SelectionModel(4, CURSOR_FORWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(6, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
expected.clear();
expected.push_back(SelectionModel(6, CURSOR_FORWARD));
expected.push_back(SelectionModel(4, CURSOR_BACKWARD));
expected.push_back(SelectionModel(5, CURSOR_BACKWARD));
expected.push_back(SelectionModel(6, CURSOR_BACKWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInRtlLtrRtl) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// RTL-LTR-RTL.
render_text->SetText(WideToUTF16(L"\x05d0" L"a" L"\x05d1"));
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
std::vector<SelectionModel> expected;
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_BACKWARD));
expected.push_back(SelectionModel(1, CURSOR_FORWARD));
expected.push_back(SelectionModel(3, CURSOR_BACKWARD));
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_LEFT);
expected.clear();
expected.push_back(SelectionModel(3, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_FORWARD));
expected.push_back(SelectionModel(2, CURSOR_BACKWARD));
expected.push_back(SelectionModel(0, CURSOR_FORWARD));
expected.push_back(SelectionModel(0, CURSOR_BACKWARD));
RunMoveCursorLeftRightTest(render_text.get(), expected, CURSOR_RIGHT);
}
TEST_F(RenderTextTest, MoveCursorLeftRight_ComplexScript) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"\x0915\x093f\x0915\x094d\x0915"));
EXPECT_EQ(0U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(2U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(4U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(5U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(5U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(4U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(2U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(0U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(0U, render_text->cursor_position());
}
TEST_F(RenderTextTest, MoveCursorLeftRight_MeiryoUILigatures) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// Meiryo UI uses single-glyph ligatures for 'ff' and 'ffi', but each letter
// (code point) has unique bounds, so mid-glyph cursoring should be possible.
render_text->SetFontList(FontList("Meiryo UI, 12px"));
render_text->SetText(WideToUTF16(L"ff ffi"));
EXPECT_EQ(0U, render_text->cursor_position());
for (size_t i = 0; i < render_text->text().length(); ++i) {
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(i + 1, render_text->cursor_position());
}
EXPECT_EQ(6U, render_text->cursor_position());
}
TEST_F(RenderTextTest, GraphemePositions) {
// LTR 2-character grapheme, LTR abc, LTR 2-character grapheme.
const base::string16 kText1 =
WideToUTF16(L"\x0915\x093f" L"abc" L"\x0915\x093f");
// LTR ab, LTR 2-character grapheme, LTR cd.
const base::string16 kText2 = WideToUTF16(L"ab" L"\x0915\x093f" L"cd");
// The below is 'MUSICAL SYMBOL G CLEF', which is represented in UTF-16 as
// two characters forming the surrogate pair 0x0001D11E.
const std::string kSurrogate = "\xF0\x9D\x84\x9E";
// LTR ab, UTF16 surrogate pair, LTR cd.
const base::string16 kText3 = UTF8ToUTF16("ab" + kSurrogate + "cd");
struct {
base::string16 text;
size_t index;
size_t expected_previous;
size_t expected_next;
} cases[] = {
{ base::string16(), 0, 0, 0 },
{ base::string16(), 1, 0, 0 },
{ base::string16(), 50, 0, 0 },
{ kText1, 0, 0, 2 },
{ kText1, 1, 0, 2 },
{ kText1, 2, 0, 3 },
{ kText1, 3, 2, 4 },
{ kText1, 4, 3, 5 },
{ kText1, 5, 4, 7 },
{ kText1, 6, 5, 7 },
{ kText1, 7, 5, 7 },
{ kText1, 8, 7, 7 },
{ kText1, 50, 7, 7 },
{ kText2, 0, 0, 1 },
{ kText2, 1, 0, 2 },
{ kText2, 2, 1, 4 },
{ kText2, 3, 2, 4 },
{ kText2, 4, 2, 5 },
{ kText2, 5, 4, 6 },
{ kText2, 6, 5, 6 },
{ kText2, 7, 6, 6 },
{ kText2, 50, 6, 6 },
{ kText3, 0, 0, 1 },
{ kText3, 1, 0, 2 },
{ kText3, 2, 1, 4 },
{ kText3, 3, 2, 4 },
{ kText3, 4, 2, 5 },
{ kText3, 5, 4, 6 },
{ kText3, 6, 5, 6 },
{ kText3, 7, 6, 6 },
{ kText3, 50, 6, 6 },
};
#if defined(OS_WIN)
// TODO(msw): XP fails due to lack of font support: http://crbug.com/106450
if (base::win::GetVersion() < base::win::VERSION_VISTA)
return;
#endif
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < arraysize(cases); i++) {
SCOPED_TRACE(base::StringPrintf("Testing cases[%" PRIuS "]", i));
render_text->SetText(cases[i].text);
size_t next = render_text->IndexOfAdjacentGrapheme(cases[i].index,
CURSOR_FORWARD);
EXPECT_EQ(cases[i].expected_next, next);
EXPECT_TRUE(render_text->IsValidCursorIndex(next));
size_t previous = render_text->IndexOfAdjacentGrapheme(cases[i].index,
CURSOR_BACKWARD);
EXPECT_EQ(cases[i].expected_previous, previous);
EXPECT_TRUE(render_text->IsValidCursorIndex(previous));
}
}
TEST_F(RenderTextTest, MidGraphemeSelectionBounds) {
#if defined(OS_WIN)
// TODO(msw): XP fails due to lack of font support: http://crbug.com/106450
if (base::win::GetVersion() < base::win::VERSION_VISTA)
return;
#endif
// Test that selection bounds may be set amid multi-character graphemes.
const base::string16 kHindi = WideToUTF16(L"\x0915\x093f");
const base::string16 kThai = WideToUTF16(L"\x0e08\x0e33");
const base::string16 cases[] = { kHindi, kThai };
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < arraysize(cases); i++) {
SCOPED_TRACE(base::StringPrintf("Testing cases[%" PRIuS "]", i));
render_text->SetText(cases[i]);
EXPECT_TRUE(render_text->IsValidLogicalIndex(1));
EXPECT_FALSE(render_text->IsValidCursorIndex(1));
EXPECT_TRUE(render_text->SelectRange(Range(2, 1)));
EXPECT_EQ(Range(2, 1), render_text->selection());
EXPECT_EQ(1U, render_text->cursor_position());
// Although selection bounds may be set within a multi-character grapheme,
// cursor movement (e.g. via arrow key) should avoid those indices.
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(0U, render_text->cursor_position());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(2U, render_text->cursor_position());
}
}
TEST_F(RenderTextTest, FindCursorPosition) {
const wchar_t* kTestStrings[] = { kLtrRtl, kLtrRtlLtr, kRtlLtr, kRtlLtrRtl };
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetDisplayRect(Rect(0, 0, 100, 20));
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("Testing case[%" PRIuS "]", i));
render_text->SetText(WideToUTF16(kTestStrings[i]));
for(size_t j = 0; j < render_text->text().length(); ++j) {
const Range range(render_text->GetGlyphBounds(j));
// Test a point just inside the leading edge of the glyph bounds.
int x = range.is_reversed() ? range.GetMax() - 1 : range.GetMin() + 1;
EXPECT_EQ(j, render_text->FindCursorPosition(Point(x, 0)).caret_pos());
}
}
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, EdgeSelectionModels) {
// Simple Latin text.
const base::string16 kLatin = WideToUTF16(L"abc");
// LTR 2-character grapheme.
const base::string16 kLTRGrapheme = WideToUTF16(L"\x0915\x093f");
// LTR 2-character grapheme, LTR a, LTR 2-character grapheme.
const base::string16 kHindiLatin =
WideToUTF16(L"\x0915\x093f" L"a" L"\x0915\x093f");
// RTL 2-character grapheme.
const base::string16 kRTLGrapheme = WideToUTF16(L"\x05e0\x05b8");
// RTL 2-character grapheme, LTR a, RTL 2-character grapheme.
const base::string16 kHebrewLatin =
WideToUTF16(L"\x05e0\x05b8" L"a" L"\x05e0\x05b8");
struct {
base::string16 text;
base::i18n::TextDirection expected_text_direction;
} cases[] = {
{ base::string16(), base::i18n::LEFT_TO_RIGHT },
{ kLatin, base::i18n::LEFT_TO_RIGHT },
{ kLTRGrapheme, base::i18n::LEFT_TO_RIGHT },
{ kHindiLatin, base::i18n::LEFT_TO_RIGHT },
{ kRTLGrapheme, base::i18n::RIGHT_TO_LEFT },
{ kHebrewLatin, base::i18n::RIGHT_TO_LEFT },
};
#if defined(OS_WIN)
// TODO(msw): XP fails due to lack of font support: http://crbug.com/106450
if (base::win::GetVersion() < base::win::VERSION_VISTA)
return;
#endif
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < arraysize(cases); i++) {
render_text->SetText(cases[i].text);
bool ltr = (cases[i].expected_text_direction == base::i18n::LEFT_TO_RIGHT);
SelectionModel start_edge =
render_text->EdgeSelectionModel(ltr ? CURSOR_LEFT : CURSOR_RIGHT);
EXPECT_EQ(start_edge, SelectionModel(0, CURSOR_BACKWARD));
SelectionModel end_edge =
render_text->EdgeSelectionModel(ltr ? CURSOR_RIGHT : CURSOR_LEFT);
EXPECT_EQ(end_edge, SelectionModel(cases[i].text.length(), CURSOR_FORWARD));
}
}
TEST_F(RenderTextTest, SelectAll) {
const wchar_t* const cases[] =
{ kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl, kRtlLtr, kRtlLtrRtl };
// Ensure that SelectAll respects the |reversed| argument regardless of
// application locale and text content directionality.
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
const SelectionModel expected_reversed(Range(3, 0), CURSOR_FORWARD);
const SelectionModel expected_forwards(Range(0, 3), CURSOR_BACKWARD);
const bool was_rtl = base::i18n::IsRTL();
for (size_t i = 0; i < 2; ++i) {
SetRTL(!base::i18n::IsRTL());
// Test that an empty string produces an empty selection model.
render_text->SetText(base::string16());
EXPECT_EQ(render_text->selection_model(), SelectionModel());
// Test the weak, LTR, RTL, and Bidi string cases.
for (size_t j = 0; j < arraysize(cases); j++) {
render_text->SetText(WideToUTF16(cases[j]));
render_text->SelectAll(false);
EXPECT_EQ(render_text->selection_model(), expected_forwards);
render_text->SelectAll(true);
EXPECT_EQ(render_text->selection_model(), expected_reversed);
}
}
EXPECT_EQ(was_rtl, base::i18n::IsRTL());
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, MoveCursorLeftRightWithSelection) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"abc\x05d0\x05d1\x05d2"));
// Left arrow on select ranging (6, 4).
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(6), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(Range(4), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(Range(5), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(Range(6), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, true);
EXPECT_EQ(Range(6, 5), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, true);
EXPECT_EQ(Range(6, 4), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(Range(6), render_text->selection());
// Right arrow on select ranging (4, 6).
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(Range(0), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(1), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(2), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(3), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(5), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(4), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, true);
EXPECT_EQ(Range(4, 5), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, true);
EXPECT_EQ(Range(4, 6), render_text->selection());
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(Range(4), render_text->selection());
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, CenteredDisplayOffset) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefghij"));
render_text->SetHorizontalAlignment(ALIGN_CENTER);
const int kEnlargement = 10;
const int content_width = render_text->GetContentWidth();
Rect display_rect(0, 0, content_width / 2,
render_text->font_list().GetHeight());
render_text->SetDisplayRect(display_rect);
// Move the cursor to the beginning of the text and, by checking the cursor
// bounds, make sure no empty space is to the left of the text.
render_text->SetCursorPosition(0);
EXPECT_EQ(display_rect.x(), render_text->GetUpdatedCursorBounds().x());
// Widen the display rect and, by checking the cursor bounds, make sure no
// empty space is introduced to the left of the text.
display_rect.Inset(0, 0, -kEnlargement, 0);
render_text->SetDisplayRect(display_rect);
EXPECT_EQ(display_rect.x(), render_text->GetUpdatedCursorBounds().x());
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
// Move the cursor to the end of the text and, by checking the cursor bounds,
// make sure no empty space is to the right of the text.
render_text->SetCursorPosition(render_text->text().length());
EXPECT_EQ(display_rect.right(),
render_text->GetUpdatedCursorBounds().right());
// Widen the display rect and, by checking the cursor bounds, make sure no
// empty space is introduced to the right of the text.
display_rect.Inset(0, 0, -kEnlargement, 0);
render_text->SetDisplayRect(display_rect);
EXPECT_EQ(display_rect.right(),
render_text->GetUpdatedCursorBounds().right());
#endif // !defined(OS_MACOSX)
}
void MoveLeftRightByWordVerifier(RenderText* render_text,
const wchar_t* str) {
render_text->SetText(WideToUTF16(str));
// Test moving by word from left ro right.
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
bool first_word = true;
while (true) {
// First, test moving by word from a word break position, such as from
// "|abc def" to "abc| def".
SelectionModel start = render_text->selection_model();
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
SelectionModel end = render_text->selection_model();
if (end == start) // reach the end.
break;
// For testing simplicity, each word is a 3-character word.
int num_of_character_moves = first_word ? 3 : 4;
first_word = false;
render_text->MoveCursorTo(start);
for (int j = 0; j < num_of_character_moves; ++j)
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(end, render_text->selection_model());
// Then, test moving by word from positions inside the word, such as from
// "a|bc def" to "abc| def", and from "ab|c def" to "abc| def".
for (int j = 1; j < num_of_character_moves; ++j) {
render_text->MoveCursorTo(start);
for (int k = 0; k < j; ++k)
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_RIGHT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(end, render_text->selection_model());
}
}
// Test moving by word from right to left.
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
first_word = true;
while (true) {
SelectionModel start = render_text->selection_model();
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false);
SelectionModel end = render_text->selection_model();
if (end == start) // reach the end.
break;
int num_of_character_moves = first_word ? 3 : 4;
first_word = false;
render_text->MoveCursorTo(start);
for (int j = 0; j < num_of_character_moves; ++j)
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(end, render_text->selection_model());
for (int j = 1; j < num_of_character_moves; ++j) {
render_text->MoveCursorTo(start);
for (int k = 0; k < j; ++k)
render_text->MoveCursor(CHARACTER_BREAK, CURSOR_LEFT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(end, render_text->selection_model());
}
}
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
// TODO(msw): Make these work on Windows.
#if !defined(OS_WIN)
TEST_F(RenderTextTest, MoveLeftRightByWordInBidiText) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
// For testing simplicity, each word is a 3-character word.
std::vector<const wchar_t*> test;
test.push_back(L"abc");
test.push_back(L"abc def");
test.push_back(L"\x05E1\x05E2\x05E3");
test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6");
test.push_back(L"abc \x05E1\x05E2\x05E3");
test.push_back(L"abc def \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6");
test.push_back(L"abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"
L" \x05E7\x05E8\x05E9");
test.push_back(L"abc \x05E1\x05E2\x05E3 hij");
test.push_back(L"abc def \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 hij opq");
test.push_back(L"abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"
L" \x05E7\x05E8\x05E9" L" opq rst uvw");
test.push_back(L"\x05E1\x05E2\x05E3 abc");
test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 abc def");
test.push_back(L"\x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6 \x05E7\x05E8\x05E9"
L" abc def hij");
test.push_back(L"\x05D1\x05D2\x05D3 abc \x05E1\x05E2\x05E3");
test.push_back(L"\x05D1\x05D2\x05D3 \x05D4\x05D5\x05D6 abc def"
L" \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6");
test.push_back(L"\x05D1\x05D2\x05D3 \x05D4\x05D5\x05D6 \x05D7\x05D8\x05D9"
L" abc def hij \x05E1\x05E2\x05E3 \x05E4\x05E5\x05E6"
L" \x05E7\x05E8\x05E9");
for (size_t i = 0; i < test.size(); ++i)
MoveLeftRightByWordVerifier(render_text.get(), test[i]);
}
TEST_F(RenderTextTest, MoveLeftRightByWordInBidiText_TestEndOfText) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"ab\x05E1"));
// Moving the cursor by word from "abC|" to the left should return "|abC".
// But since end of text is always treated as a word break, it returns
// position "ab|C".
// TODO(xji): Need to make it work as expected.
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false);
// EXPECT_EQ(SelectionModel(), render_text->selection_model());
// Moving the cursor by word from "|abC" to the right returns "abC|".
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(SelectionModel(3, CURSOR_FORWARD), render_text->selection_model());
render_text->SetText(WideToUTF16(L"\x05E1\x05E2" L"a"));
// For logical text "BCa", moving the cursor by word from "aCB|" to the left
// returns "|aCB".
render_text->MoveCursor(LINE_BREAK, CURSOR_RIGHT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(SelectionModel(3, CURSOR_FORWARD), render_text->selection_model());
// Moving the cursor by word from "|aCB" to the right should return "aCB|".
// But since end of text is always treated as a word break, it returns
// position "a|CB".
// TODO(xji): Need to make it work as expected.
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
// EXPECT_EQ(SelectionModel(), render_text->selection_model());
}
TEST_F(RenderTextTest, MoveLeftRightByWordInTextWithMultiSpaces) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"abc def"));
render_text->MoveCursorTo(SelectionModel(5, CURSOR_FORWARD));
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(11U, render_text->cursor_position());
render_text->MoveCursorTo(SelectionModel(5, CURSOR_FORWARD));
render_text->MoveCursor(WORD_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(0U, render_text->cursor_position());
}
#endif // !defined(OS_WIN)
TEST_F(RenderTextTest, MoveLeftRightByWordInChineseText) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"\x6211\x4EEC\x53BB\x516C\x56ED\x73A9"));
render_text->MoveCursor(LINE_BREAK, CURSOR_LEFT, false);
EXPECT_EQ(0U, render_text->cursor_position());
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(2U, render_text->cursor_position());
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(3U, render_text->cursor_position());
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(5U, render_text->cursor_position());
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(6U, render_text->cursor_position());
render_text->MoveCursor(WORD_BREAK, CURSOR_RIGHT, false);
EXPECT_EQ(6U, render_text->cursor_position());
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, StringSizeSanity) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(UTF8ToUTF16("Hello World"));
const Size string_size = render_text->GetStringSize();
EXPECT_GT(string_size.width(), 0);
EXPECT_GT(string_size.height(), 0);
}
TEST_F(RenderTextTest, StringSizeLongStrings) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
Size previous_string_size;
for (size_t length = 10; length < 1000000; length *= 10) {
render_text->SetText(base::string16(length, 'a'));
const Size string_size = render_text->GetStringSize();
EXPECT_GT(string_size.width(), previous_string_size.width());
EXPECT_GT(string_size.height(), 0);
previous_string_size = string_size;
}
}
// TODO(asvitkine): This test fails because PlatformFontMac uses point font
// sizes instead of pixel sizes like other implementations.
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, StringSizeEmptyString) {
// Ascent and descent of Arial and Symbol are different on most platforms.
const FontList font_list("Arial,Symbol, 16px");
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetFontList(font_list);
render_text->SetDisplayRect(Rect(0, 0, 0, font_list.GetHeight()));
// The empty string respects FontList metrics for non-zero height
// and baseline.
render_text->SetText(base::string16());
EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height());
EXPECT_EQ(0, render_text->GetStringSize().width());
EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline());
render_text->SetText(UTF8ToUTF16(" "));
EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height());
EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline());
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, StringSizeRespectsFontListMetrics) {
// Check that Arial and Symbol have different font metrics.
Font arial_font("Arial", 16);
ASSERT_EQ("arial",
base::ToLowerASCII(arial_font.GetActualFontNameForTesting()));
Font symbol_font("Symbol", 16);
ASSERT_EQ("symbol",
base::ToLowerASCII(symbol_font.GetActualFontNameForTesting()));
EXPECT_NE(arial_font.GetHeight(), symbol_font.GetHeight());
EXPECT_NE(arial_font.GetBaseline(), symbol_font.GetBaseline());
// "a" should be rendered with Arial, not with Symbol.
const char* arial_font_text = "a";
// "®" (registered trademark symbol) should be rendered with Symbol,
// not with Arial.
const char* symbol_font_text = "\xC2\xAE";
Font smaller_font = arial_font;
Font larger_font = symbol_font;
const char* smaller_font_text = arial_font_text;
const char* larger_font_text = symbol_font_text;
if (symbol_font.GetHeight() < arial_font.GetHeight() &&
symbol_font.GetBaseline() < arial_font.GetBaseline()) {
std::swap(smaller_font, larger_font);
std::swap(smaller_font_text, larger_font_text);
}
ASSERT_LT(smaller_font.GetHeight(), larger_font.GetHeight());
ASSERT_LT(smaller_font.GetBaseline(), larger_font.GetBaseline());
// Check |smaller_font_text| is rendered with the smaller font.
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(UTF8ToUTF16(smaller_font_text));
render_text->SetFontList(FontList(smaller_font));
render_text->SetDisplayRect(Rect(0, 0, 0,
render_text->font_list().GetHeight()));
EXPECT_EQ(smaller_font.GetHeight(), render_text->GetStringSize().height());
EXPECT_EQ(smaller_font.GetBaseline(), render_text->GetBaseline());
// Layout the same text with mixed fonts. The text should be rendered with
// the smaller font, but the height and baseline are determined with the
// metrics of the font list, which is equal to the larger font.
std::vector<Font> fonts;
fonts.push_back(smaller_font); // The primary font is the smaller font.
fonts.push_back(larger_font);
const FontList font_list(fonts);
render_text->SetFontList(font_list);
render_text->SetDisplayRect(Rect(0, 0, 0,
render_text->font_list().GetHeight()));
EXPECT_LT(smaller_font.GetHeight(), render_text->GetStringSize().height());
EXPECT_LT(smaller_font.GetBaseline(), render_text->GetBaseline());
EXPECT_EQ(font_list.GetHeight(), render_text->GetStringSize().height());
EXPECT_EQ(font_list.GetBaseline(), render_text->GetBaseline());
}
TEST_F(RenderTextTest, MinLineHeight) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("Hello!"));
SizeF default_size = render_text->GetStringSizeF();
ASSERT_NE(0, default_size.height());
ASSERT_NE(0, default_size.width());
render_text->SetMinLineHeight(default_size.height() / 2);
EXPECT_EQ(default_size.ToString(), render_text->GetStringSizeF().ToString());
render_text->SetMinLineHeight(default_size.height() * 2);
SizeF taller_size = render_text->GetStringSizeF();
EXPECT_EQ(default_size.height() * 2, taller_size.height());
EXPECT_EQ(default_size.width(), taller_size.width());
}
TEST_F(RenderTextTest, SetFontList) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetFontList(FontList("Arial,Symbol, 13px"));
const std::vector<Font>& fonts = render_text->font_list().GetFonts();
ASSERT_EQ(2U, fonts.size());
EXPECT_EQ("Arial", fonts[0].GetFontName());
EXPECT_EQ("Symbol", fonts[1].GetFontName());
EXPECT_EQ(13, render_text->font_list().GetFontSize());
}
// http://crbug/624513
#if defined(OS_WIN)
#define MAYBE_StringSizeBoldWidth DISABLED_StringSizeBoldWidth
#else
#define MAYBE_StringSizeBoldWidth StringSizeBoldWidth
#endif
TEST_F(RenderTextTest, MAYBE_StringSizeBoldWidth) {
// TODO(mboc): Add some unittests for other weights (currently not
// implemented because of test system font configuration).
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(UTF8ToUTF16("Hello World"));
const int plain_width = render_text->GetStringSize().width();
EXPECT_GT(plain_width, 0);
// Apply a bold style and check that the new width is greater.
render_text->SetWeight(Font::Weight::BOLD);
const int bold_width = render_text->GetStringSize().width();
EXPECT_GT(bold_width, plain_width);
#if defined(OS_WIN)
render_text->SetWeight(Font::Weight::SEMIBOLD);
const int semibold_width = render_text->GetStringSize().width();
EXPECT_GT(bold_width, semibold_width);
#endif
// Now, apply a plain style over the first word only.
render_text->ApplyWeight(Font::Weight::NORMAL, Range(0, 5));
const int plain_bold_width = render_text->GetStringSize().width();
EXPECT_GT(plain_bold_width, plain_width);
EXPECT_LT(plain_bold_width, bold_width);
}
TEST_F(RenderTextTest, StringSizeHeight) {
base::string16 cases[] = {
WideToUTF16(L"Hello World!"), // English
WideToUTF16(L"\x6328\x62f6"), // Japanese
WideToUTF16(L"\x0915\x093f"), // Hindi
WideToUTF16(L"\x05e0\x05b8"), // Hebrew
};
const FontList default_font_list;
const FontList& larger_font_list = default_font_list.DeriveWithSizeDelta(24);
EXPECT_GT(larger_font_list.GetHeight(), default_font_list.GetHeight());
for (size_t i = 0; i < arraysize(cases); i++) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetFontList(default_font_list);
render_text->SetText(cases[i]);
const int height1 = render_text->GetStringSize().height();
EXPECT_GT(height1, 0);
// Check that setting the larger font increases the height.
render_text->SetFontList(larger_font_list);
const int height2 = render_text->GetStringSize().height();
EXPECT_GT(height2, height1);
}
}
TEST_F(RenderTextTest, GetBaselineSanity) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(UTF8ToUTF16("Hello World"));
const int baseline = render_text->GetBaseline();
EXPECT_GT(baseline, 0);
}
TEST_F(RenderTextTest, CursorBoundsInReplacementMode) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
render_text->SetDisplayRect(Rect(100, 17));
SelectionModel sel_b(1, CURSOR_FORWARD);
SelectionModel sel_c(2, CURSOR_FORWARD);
Rect cursor_around_b = render_text->GetCursorBounds(sel_b, false);
Rect cursor_before_b = render_text->GetCursorBounds(sel_b, true);
Rect cursor_before_c = render_text->GetCursorBounds(sel_c, true);
EXPECT_EQ(cursor_around_b.x(), cursor_before_b.x());
EXPECT_EQ(cursor_around_b.right(), cursor_before_c.x());
}
TEST_F(RenderTextTest, GetTextOffset) {
// The default horizontal text offset differs for LTR and RTL, and is only set
// when the RenderText object is created. This test will check the default in
// LTR mode, and the next test will check the RTL default.
const bool was_rtl = base::i18n::IsRTL();
SetRTL(false);
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
render_text->SetFontList(FontList("Arial, 13px"));
// Set display area's size equal to the font size.
const Size font_size(render_text->GetContentWidth(),
render_text->font_list().GetHeight());
Rect display_rect(font_size);
render_text->SetDisplayRect(display_rect);
Vector2d offset = render_text->GetLineOffset(0);
EXPECT_TRUE(offset.IsZero());
const int kEnlargementX = 2;
display_rect.Inset(0, 0, -kEnlargementX, 0);
render_text->SetDisplayRect(display_rect);
// Check the default horizontal alignment.
offset = render_text->GetLineOffset(0);
EXPECT_EQ(0, offset.x());
// Check explicitly setting the horizontal alignment.
render_text->SetHorizontalAlignment(ALIGN_LEFT);
offset = render_text->GetLineOffset(0);
EXPECT_EQ(0, offset.x());
render_text->SetHorizontalAlignment(ALIGN_CENTER);
offset = render_text->GetLineOffset(0);
EXPECT_EQ(kEnlargementX / 2, offset.x());
render_text->SetHorizontalAlignment(ALIGN_RIGHT);
offset = render_text->GetLineOffset(0);
EXPECT_EQ(kEnlargementX, offset.x());
// Check that text is vertically centered within taller display rects.
const int kEnlargementY = display_rect.height();
display_rect.Inset(0, 0, 0, -kEnlargementY);
render_text->SetDisplayRect(display_rect);
const Vector2d prev_offset = render_text->GetLineOffset(0);
display_rect.Inset(0, 0, 0, -2 * kEnlargementY);
render_text->SetDisplayRect(display_rect);
offset = render_text->GetLineOffset(0);
EXPECT_EQ(prev_offset.y() + kEnlargementY, offset.y());
SetRTL(was_rtl);
}
TEST_F(RenderTextTest, GetTextOffsetHorizontalDefaultInRTL) {
// This only checks the default horizontal alignment in RTL mode; all other
// GetLineOffset(0) attributes are checked by the test above.
const bool was_rtl = base::i18n::IsRTL();
SetRTL(true);
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
render_text->SetFontList(FontList("Arial, 13px"));
const int kEnlargement = 2;
const Size font_size(render_text->GetContentWidth() + kEnlargement,
render_text->GetStringSize().height());
Rect display_rect(font_size);
render_text->SetDisplayRect(display_rect);
Vector2d offset = render_text->GetLineOffset(0);
EXPECT_EQ(kEnlargement, offset.x());
SetRTL(was_rtl);
}
TEST_F(RenderTextTest, SetDisplayOffset) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
render_text->SetFontList(FontList("Arial, 13px"));
const Size font_size(render_text->GetContentWidth(),
render_text->font_list().GetHeight());
const int kEnlargement = 10;
// Set display width |kEnlargement| pixels greater than content width and test
// different possible situations. In this case the only possible display
// offset is zero.
Rect display_rect(font_size);
display_rect.Inset(0, 0, -kEnlargement, 0);
render_text->SetDisplayRect(display_rect);
struct {
HorizontalAlignment alignment;
int offset;
} small_content_cases[] = {
{ ALIGN_LEFT, -kEnlargement },
{ ALIGN_LEFT, 0 },
{ ALIGN_LEFT, kEnlargement },
{ ALIGN_RIGHT, -kEnlargement },
{ ALIGN_RIGHT, 0 },
{ ALIGN_RIGHT, kEnlargement },
{ ALIGN_CENTER, -kEnlargement },
{ ALIGN_CENTER, 0 },
{ ALIGN_CENTER, kEnlargement },
};
for (size_t i = 0; i < arraysize(small_content_cases); i++) {
render_text->SetHorizontalAlignment(small_content_cases[i].alignment);
render_text->SetDisplayOffset(small_content_cases[i].offset);
EXPECT_EQ(0, render_text->GetUpdatedDisplayOffset().x());
}
// Set display width |kEnlargement| pixels less than content width and test
// different possible situations.
display_rect = Rect(font_size);
display_rect.Inset(0, 0, kEnlargement, 0);
render_text->SetDisplayRect(display_rect);
struct {
HorizontalAlignment alignment;
int offset;
int expected_offset;
} large_content_cases[] = {
// When text is left-aligned, display offset can be in range
// [-kEnlargement, 0].
{ ALIGN_LEFT, -2 * kEnlargement, -kEnlargement },
{ ALIGN_LEFT, -kEnlargement / 2, -kEnlargement / 2 },
{ ALIGN_LEFT, kEnlargement, 0 },
// When text is right-aligned, display offset can be in range
// [0, kEnlargement].
{ ALIGN_RIGHT, -kEnlargement, 0 },
{ ALIGN_RIGHT, kEnlargement / 2, kEnlargement / 2 },
{ ALIGN_RIGHT, 2 * kEnlargement, kEnlargement },
// When text is center-aligned, display offset can be in range
// [-kEnlargement / 2 - 1, (kEnlargement - 1) / 2].
{ ALIGN_CENTER, -kEnlargement, -kEnlargement / 2 - 1 },
{ ALIGN_CENTER, -kEnlargement / 4, -kEnlargement / 4 },
{ ALIGN_CENTER, kEnlargement / 4, kEnlargement / 4 },
{ ALIGN_CENTER, kEnlargement, (kEnlargement - 1) / 2 },
};
for (size_t i = 0; i < arraysize(large_content_cases); i++) {
render_text->SetHorizontalAlignment(large_content_cases[i].alignment);
render_text->SetDisplayOffset(large_content_cases[i].offset);
EXPECT_EQ(large_content_cases[i].expected_offset,
render_text->GetUpdatedDisplayOffset().x());
}
}
TEST_F(RenderTextTest, SameFontForParentheses) {
struct {
const base::char16 left_char;
const base::char16 right_char;
} punctuation_pairs[] = {
{ '(', ')' },
{ '{', '}' },
{ '<', '>' },
};
struct {
base::string16 text;
} cases[] = {
// English(English)
{ WideToUTF16(L"Hello World(a)") },
// English(English)English
{ WideToUTF16(L"Hello World(a)Hello World") },
// Japanese(English)
{ WideToUTF16(L"\x6328\x62f6(a)") },
// Japanese(English)Japanese
{ WideToUTF16(L"\x6328\x62f6(a)\x6328\x62f6") },
// English(Japanese)English
{ WideToUTF16(L"Hello World(\x6328\x62f6)Hello World") },
// Hindi(English)
{ WideToUTF16(L"\x0915\x093f(a)") },
// Hindi(English)Hindi
{ WideToUTF16(L"\x0915\x093f(a)\x0915\x093f") },
// English(Hindi)English
{ WideToUTF16(L"Hello World(\x0915\x093f)Hello World") },
// Hebrew(English)
{ WideToUTF16(L"\x05e0\x05b8(a)") },
// Hebrew(English)Hebrew
{ WideToUTF16(L"\x05e0\x05b8(a)\x05e0\x05b8") },
// English(Hebrew)English
{ WideToUTF16(L"Hello World(\x05e0\x05b8)Hello World") },
};
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < arraysize(cases); ++i) {
base::string16 text = cases[i].text;
const size_t start_paren_char_index = text.find('(');
ASSERT_NE(base::string16::npos, start_paren_char_index);
const size_t end_paren_char_index = text.find(')');
ASSERT_NE(base::string16::npos, end_paren_char_index);
for (size_t j = 0; j < arraysize(punctuation_pairs); ++j) {
text[start_paren_char_index] = punctuation_pairs[j].left_char;
text[end_paren_char_index] = punctuation_pairs[j].right_char;
render_text->SetText(text);
const std::vector<RenderText::FontSpan> spans =
render_text->GetFontSpansForTesting();
int start_paren_span_index = -1;
int end_paren_span_index = -1;
for (size_t k = 0; k < spans.size(); ++k) {
if (IndexInRange(spans[k].second, start_paren_char_index))
start_paren_span_index = k;
if (IndexInRange(spans[k].second, end_paren_char_index))
end_paren_span_index = k;
}
ASSERT_NE(-1, start_paren_span_index);
ASSERT_NE(-1, end_paren_span_index);
const Font& start_font = spans[start_paren_span_index].first;
const Font& end_font = spans[end_paren_span_index].first;
EXPECT_EQ(start_font.GetFontName(), end_font.GetFontName());
EXPECT_EQ(start_font.GetFontSize(), end_font.GetFontSize());
EXPECT_EQ(start_font.GetStyle(), end_font.GetStyle());
}
}
}
// Make sure the caret width is always >=1 so that the correct
// caret is drawn at high DPI. crbug.com/164100.
TEST_F(RenderTextTest, CaretWidth) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
EXPECT_GE(render_text->GetUpdatedCursorBounds().width(), 1);
}
TEST_F(RenderTextTest, SelectWord) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16(" foo a.bc.d bar"));
struct {
size_t cursor;
size_t selection_start;
size_t selection_end;
} cases[] = {
{ 0, 0, 1 },
{ 1, 1, 4 },
{ 2, 1, 4 },
{ 3, 1, 4 },
{ 4, 4, 6 },
{ 5, 4, 6 },
{ 6, 6, 7 },
{ 7, 7, 8 },
{ 8, 8, 10 },
{ 9, 8, 10 },
{ 10, 10, 11 },
{ 11, 11, 12 },
{ 12, 12, 13 },
{ 13, 13, 16 },
{ 14, 13, 16 },
{ 15, 13, 16 },
{ 16, 13, 16 },
};
for (size_t i = 0; i < arraysize(cases); ++i) {
render_text->SetCursorPosition(cases[i].cursor);
render_text->SelectWord();
EXPECT_EQ(Range(cases[i].selection_start, cases[i].selection_end),
render_text->selection());
}
}
// Make sure the last word is selected when the cursor is at text.length().
TEST_F(RenderTextTest, LastWordSelected) {
const std::string kTestURL1 = "http://www.google.com";
const std::string kTestURL2 = "http://www.google.com/something/";
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16(kTestURL1));
render_text->SetCursorPosition(kTestURL1.length());
render_text->SelectWord();
EXPECT_EQ(ASCIIToUTF16("com"), GetSelectedText(render_text.get()));
EXPECT_FALSE(render_text->selection().is_reversed());
render_text->SetText(ASCIIToUTF16(kTestURL2));
render_text->SetCursorPosition(kTestURL2.length());
render_text->SelectWord();
EXPECT_EQ(ASCIIToUTF16("/"), GetSelectedText(render_text.get()));
EXPECT_FALSE(render_text->selection().is_reversed());
}
// When given a non-empty selection, SelectWord should expand the selection to
// nearest word boundaries.
TEST_F(RenderTextTest, SelectMultipleWords) {
const std::string kTestURL = "http://www.google.com";
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16(kTestURL));
render_text->SelectRange(Range(16, 20));
render_text->SelectWord();
EXPECT_EQ(ASCIIToUTF16("google.com"), GetSelectedText(render_text.get()));
EXPECT_FALSE(render_text->selection().is_reversed());
// SelectWord should preserve the selection direction.
render_text->SelectRange(Range(20, 16));
render_text->SelectWord();
EXPECT_EQ(ASCIIToUTF16("google.com"), GetSelectedText(render_text.get()));
EXPECT_TRUE(render_text->selection().is_reversed());
}
// TODO(asvitkine): RenderTextMac cursor movements. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, DisplayRectShowsCursorLTR) {
ASSERT_FALSE(base::i18n::IsRTL());
ASSERT_FALSE(base::i18n::ICUIsRTL());
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"abcdefghijklmnopqrstuvwxzyabcdefg"));
render_text->MoveCursorTo(SelectionModel(render_text->text().length(),
CURSOR_FORWARD));
int width = render_text->GetStringSize().width();
ASSERT_GT(width, 10);
// Ensure that the cursor is placed at the width of its preceding text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x());
// Ensure that shrinking the display rectangle keeps the cursor in view.
render_text->SetDisplayRect(Rect(width - 10, 1));
EXPECT_EQ(render_text->display_rect().width(),
render_text->GetUpdatedCursorBounds().right());
// Ensure that the text will pan to fill its expanding display rectangle.
render_text->SetDisplayRect(Rect(width - 5, 1));
EXPECT_EQ(render_text->display_rect().width(),
render_text->GetUpdatedCursorBounds().right());
// Ensure that a sufficiently large display rectangle shows all the text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x());
// Repeat the test with RTL text.
render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7"
L"\x5d8\x5d9\x5da\x5db\x5dc\x5dd\x5de\x5df"));
render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD));
width = render_text->GetStringSize().width();
ASSERT_GT(width, 10);
// Ensure that the cursor is placed at the width of its preceding text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x());
// Ensure that shrinking the display rectangle keeps the cursor in view.
render_text->SetDisplayRect(Rect(width - 10, 1));
EXPECT_EQ(render_text->display_rect().width(),
render_text->GetUpdatedCursorBounds().right());
// Ensure that the text will pan to fill its expanding display rectangle.
render_text->SetDisplayRect(Rect(width - 5, 1));
EXPECT_EQ(render_text->display_rect().width(),
render_text->GetUpdatedCursorBounds().right());
// Ensure that a sufficiently large display rectangle shows all the text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(width, render_text->GetUpdatedCursorBounds().x());
}
#endif // !defined(OS_MACOSX)
TEST_F(RenderTextTest, DisplayRectShowsCursorRTL) {
// Set the application default text direction to RTL.
const bool was_rtl = base::i18n::IsRTL();
SetRTL(true);
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(WideToUTF16(L"abcdefghijklmnopqrstuvwxzyabcdefg"));
render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD));
int width = render_text->GetStringSize().width();
ASSERT_GT(width, 10);
// Ensure that the cursor is placed at the width of its preceding text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(render_text->display_rect().width() - width - 1,
render_text->GetUpdatedCursorBounds().x());
// Ensure that shrinking the display rectangle keeps the cursor in view.
render_text->SetDisplayRect(Rect(width - 10, 1));
EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x());
// Ensure that the text will pan to fill its expanding display rectangle.
render_text->SetDisplayRect(Rect(width - 5, 1));
EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x());
// Ensure that a sufficiently large display rectangle shows all the text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(render_text->display_rect().width() - width - 1,
render_text->GetUpdatedCursorBounds().x());
// Repeat the test with RTL text.
render_text->SetText(WideToUTF16(L"\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7"
L"\x5d8\x5d9\x5da\x5db\x5dc\x5dd\x5de\x5df"));
render_text->MoveCursorTo(SelectionModel(render_text->text().length(),
CURSOR_FORWARD));
width = render_text->GetStringSize().width();
ASSERT_GT(width, 10);
// Ensure that the cursor is placed at the width of its preceding text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(render_text->display_rect().width() - width - 1,
render_text->GetUpdatedCursorBounds().x());
// Ensure that shrinking the display rectangle keeps the cursor in view.
render_text->SetDisplayRect(Rect(width - 10, 1));
EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x());
// Ensure that the text will pan to fill its expanding display rectangle.
render_text->SetDisplayRect(Rect(width - 5, 1));
EXPECT_EQ(0, render_text->GetUpdatedCursorBounds().x());
// Ensure that a sufficiently large display rectangle shows all the text.
render_text->SetDisplayRect(Rect(width + 10, 1));
EXPECT_EQ(render_text->display_rect().width() - width - 1,
render_text->GetUpdatedCursorBounds().x());
// Reset the application default text direction to LTR.
SetRTL(was_rtl);
EXPECT_EQ(was_rtl, base::i18n::IsRTL());
}
// Changing colors between or inside ligated glyphs should not break shaping.
TEST_F(RenderTextTest, SelectionKeepsLigatures) {
const wchar_t* kTestStrings[] = { L"\x644\x623", L"\x633\x627" };
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_selection_color(SK_ColorRED);
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
render_text->SetText(WideToUTF16(kTestStrings[i]));
const int expected_width = render_text->GetStringSize().width();
render_text->MoveCursorTo(SelectionModel(Range(0, 1), CURSOR_FORWARD));
EXPECT_EQ(expected_width, render_text->GetStringSize().width());
// Drawing the text should not DCHECK or crash; see http://crbug.com/262119
render_text->Draw(&canvas);
render_text->MoveCursorTo(SelectionModel(0, CURSOR_FORWARD));
}
}
// Ensure strings wrap onto multiple lines for a small available width.
TEST_F(RenderTextTest, Multiline_MinWidth) {
const wchar_t* kTestStrings[] = { kWeak, kLtr, kLtrRtl, kLtrRtlLtr, kRtl,
kRtlLtr, kRtlLtrRtl };
RenderTextHarfBuzz render_text;
render_text.SetDisplayRect(Rect(1, 1000));
render_text.SetMultiline(true);
render_text.SetWordWrapBehavior(WRAP_LONG_WORDS);
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i]));
render_text.Draw(&canvas);
EXPECT_GT(render_text.lines_.size(), 1U);
}
}
// Ensure strings wrap onto multiple lines for a normal available width.
TEST_F(RenderTextTest, Multiline_NormalWidth) {
const struct {
const wchar_t* const text;
const Range first_line_char_range;
const Range second_line_char_range;
bool is_ltr;
} kTestStrings[] = {
{ L"abc defg hijkl", Range(0, 9), Range(9, 14), true },
{ L"qwertyzxcvbn", Range(0, 10), Range(10, 12), true },
{ L"\x0627\x0644\x0644\x063A\x0629 "
L"\x0627\x0644\x0639\x0631\x0628\x064A\x0629",
Range(0, 6), Range(6, 13), false },
{ L"\x062A\x0641\x0627\x062D \x05EA\x05E4\x05D5\x05D6\x05D9"
L"\x05DA\x05DB\x05DD", Range(0, 5), Range(5, 13), false }
};
RenderTextHarfBuzz render_text;
// Specify the fixed width for characters to suppress the possible variations
// of linebreak results.
render_text.set_glyph_width_for_test(5);
render_text.SetDisplayRect(Rect(50, 1000));
render_text.SetMultiline(true);
render_text.SetWordWrapBehavior(WRAP_LONG_WORDS);
render_text.SetHorizontalAlignment(ALIGN_TO_HEAD);
Canvas canvas;
TestSkiaTextRenderer renderer(&canvas);
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i].text));
render_text.EnsureLayout();
render_text.DrawVisualText(&renderer);
ASSERT_EQ(2U, render_text.lines_.size());
ASSERT_EQ(1U, render_text.lines_[0].segments.size());
EXPECT_EQ(kTestStrings[i].first_line_char_range,
render_text.lines_[0].segments[0].char_range);
ASSERT_EQ(1U, render_text.lines_[1].segments.size());
EXPECT_EQ(kTestStrings[i].second_line_char_range,
render_text.lines_[1].segments[0].char_range);
std::vector<TestSkiaTextRenderer::TextLog> text_log;
renderer.GetTextLogAndReset(&text_log);
ASSERT_EQ(2U, text_log.size());
// NOTE: this expectation compares the character length and glyph counts,
// which isn't always equal. This is okay only because all the test
// strings are simple (like, no compound characters nor UTF16-surrogate
// pairs). Be careful in case more complicated test strings are added.
EXPECT_EQ(kTestStrings[i].first_line_char_range.length(),
text_log[0].glyph_count);
EXPECT_EQ(kTestStrings[i].second_line_char_range.length(),
text_log[1].glyph_count);
EXPECT_LT(text_log[0].origin.y(), text_log[1].origin.y());
if (kTestStrings[i].is_ltr) {
EXPECT_EQ(0, text_log[0].origin.x());
EXPECT_EQ(0, text_log[1].origin.x());
} else {
EXPECT_LT(0, text_log[0].origin.x());
EXPECT_LT(0, text_log[1].origin.x());
}
}
}
// Ensure strings don't wrap onto multiple lines for a sufficient available
// width.
TEST_F(RenderTextTest, Multiline_SufficientWidth) {
const wchar_t* kTestStrings[] = { L"", L" ", L".", L" . ", L"abc", L"a b c",
L"\x62E\x628\x632", L"\x62E \x628 \x632" };
RenderTextHarfBuzz render_text;
render_text.SetDisplayRect(Rect(1000, 1000));
render_text.SetMultiline(true);
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i]));
render_text.Draw(&canvas);
EXPECT_EQ(1U, render_text.lines_.size());
}
}
TEST_F(RenderTextTest, Multiline_Newline) {
const struct {
const wchar_t* const text;
const size_t lines_count;
// Ranges of the characters on each line preceding the newline.
const Range line_char_ranges[3];
} kTestStrings[] = {
{L"abc\ndef", 2ul, { Range(0, 3), Range(4, 7), Range::InvalidRange() } },
{L"a \n b ", 2ul, { Range(0, 2), Range(3, 6), Range::InvalidRange() } },
{L"ab\n", 2ul, { Range(0, 2), Range(), Range::InvalidRange() } },
{L"a\n\nb", 3ul, { Range(0, 1), Range(), Range(3, 4) } },
{L"\nab", 2ul, { Range(), Range(1, 3), Range::InvalidRange() } },
{L"\n", 2ul, { Range(), Range(), Range::InvalidRange() } },
};
RenderTextHarfBuzz render_text;
render_text.SetDisplayRect(Rect(200, 1000));
render_text.SetMultiline(true);
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i].text));
render_text.Draw(&canvas);
EXPECT_EQ(kTestStrings[i].lines_count, render_text.lines_.size());
if (kTestStrings[i].lines_count != render_text.lines_.size())
continue;
for (size_t j = 0; j < kTestStrings[i].lines_count; ++j) {
SCOPED_TRACE(base::StringPrintf("Line %" PRIuS "", j));
// There might be multiple segments in one line. Merge all the segments
// ranges in the same line.
const size_t segment_size = render_text.lines()[j].segments.size();
Range line_range;
if (segment_size > 0)
line_range = Range(
render_text.lines()[j].segments[0].char_range.start(),
render_text.lines()[j].segments[segment_size - 1].char_range.end());
EXPECT_EQ(kTestStrings[i].line_char_ranges[j], line_range);
}
}
}
// Make sure that multiline mode ignores elide behavior.
TEST_F(RenderTextTest, Multiline_IgnoreElide) {
const wchar_t kTestString[] =
L"very very very long string xxxxxxxxxxxxxxxxxxxxxxxxxx";
const wchar_t kEllipsis[] = L"\x2026";
RenderTextHarfBuzz render_text;
render_text.SetElideBehavior(ELIDE_TAIL);
render_text.SetDisplayRect(Rect(20, 1000));
render_text.SetText(base::WideToUTF16(kTestString));
EXPECT_NE(base::string16::npos,
render_text.GetDisplayText().find(base::WideToUTF16(kEllipsis)));
render_text.SetMultiline(true);
EXPECT_EQ(base::string16::npos,
render_text.GetDisplayText().find(base::WideToUTF16(kEllipsis)));
}
TEST_F(RenderTextTest, Multiline_NewlineCharacterReplacement) {
const wchar_t* kTestStrings[] = {
L"abc\ndef", L"a \n b ", L"ab\n", L"a\n\nb", L"\nab", L"\n",
};
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
RenderTextHarfBuzz render_text;
render_text.SetDisplayRect(Rect(200, 1000));
render_text.SetText(WideToUTF16(kTestStrings[i]));
base::string16 display_text = render_text.GetDisplayText();
// If RenderText is not multiline, the newline characters are replaced
// by symbols, therefore the character should be changed.
EXPECT_NE(WideToUTF16(kTestStrings[i]), render_text.GetDisplayText());
// Setting multiline will fix this, the newline characters will be back
// to the original text.
render_text.SetMultiline(true);
EXPECT_EQ(WideToUTF16(kTestStrings[i]), render_text.GetDisplayText());
}
}
// Ensure horizontal alignment works in multiline mode.
TEST_F(RenderTextTest, Multiline_HorizontalAlignment) {
const struct {
const wchar_t* const text;
const HorizontalAlignment alignment;
} kTestStrings[] = {
{ L"abcdefghij\nhijkl", ALIGN_LEFT },
{ L"nhijkl\nabcdefghij", ALIGN_LEFT },
// hebrew, 2nd line shorter
{ L"\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7\n\x5d0\x5d1\x5d2\x5d3",
ALIGN_RIGHT },
// hebrew, 2nd line longer
{ L"\x5d0\x5d1\x5d2\x5d3\n\x5d0\x5d1\x5d2\x5d3\x5d4\x5d5\x5d6\x5d7",
ALIGN_RIGHT },
// arabic, 2nd line shorter
{ L"\x62a\x62b\x62c\x62d\x62e\x62f\x630\n\x660\x661\x662\x663\x664",
ALIGN_RIGHT },
// arabic, 2nd line longer
{ L"\x660\x661\x662\x663\x664\n\x62a\x62b\x62c\x62d\x62e\x62f\x630",
ALIGN_RIGHT },
};
const int kGlyphSize = 5;
RenderTextHarfBuzz render_text;
render_text.SetHorizontalAlignment(ALIGN_TO_HEAD);
render_text.set_glyph_width_for_test(kGlyphSize);
render_text.SetDisplayRect(Rect(100, 1000));
render_text.SetMultiline(true);
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "] %ls", i,
kTestStrings[i].text));
render_text.SetText(WideToUTF16(kTestStrings[i].text));
render_text.Draw(&canvas);
ASSERT_LE(2u, render_text.lines().size());
if (kTestStrings[i].alignment == ALIGN_LEFT) {
EXPECT_EQ(0, render_text.GetAlignmentOffset(0).x());
EXPECT_EQ(0, render_text.GetAlignmentOffset(1).x());
} else {
std::vector<base::string16> lines = base::SplitString(
base::WideToUTF16(kTestStrings[i].text),
base::string16(1, '\n'), base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
ASSERT_EQ(2u, lines.size());
int difference = (lines[0].length() - lines[1].length()) * kGlyphSize;
EXPECT_EQ(render_text.GetAlignmentOffset(0).x() + difference,
render_text.GetAlignmentOffset(1).x());
}
}
}
TEST_F(RenderTextTest, Multiline_WordWrapBehavior) {
const int kGlyphSize = 5;
const struct {
const WordWrapBehavior behavior;
const size_t num_lines;
const Range char_ranges[4];
} kTestScenarios[] = {
{ IGNORE_LONG_WORDS, 3u,
{ Range(0, 4), Range(4, 11), Range(11, 14), Range::InvalidRange() } },
{ TRUNCATE_LONG_WORDS, 3u,
{ Range(0, 4), Range(4, 8), Range(11, 14), Range::InvalidRange() } },
{ WRAP_LONG_WORDS, 4u,
{ Range(0, 4), Range(4, 8), Range(8, 11), Range(11, 14) } },
// TODO(mukai): implement ELIDE_LONG_WORDS. It's not used right now.
};
RenderTextHarfBuzz render_text;
render_text.SetMultiline(true);
render_text.SetText(ASCIIToUTF16("foo fooooo foo"));
render_text.set_glyph_width_for_test(kGlyphSize);
render_text.SetDisplayRect(Rect(0, 0, kGlyphSize * 4, 0));
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestScenarios); ++i) {
SCOPED_TRACE(base::StringPrintf(
"kTestScenarios[%" PRIuS "] %d", i, kTestScenarios[i].behavior));
render_text.SetWordWrapBehavior(kTestScenarios[i].behavior);
render_text.Draw(&canvas);
ASSERT_EQ(kTestScenarios[i].num_lines, render_text.lines().size());
for (size_t j = 0; j < render_text.lines().size(); ++j) {
SCOPED_TRACE(base::StringPrintf("%" PRIuS "-th line", j));
EXPECT_EQ(kTestScenarios[i].char_ranges[j],
render_text.lines()[j].segments[0].char_range);
EXPECT_EQ(kTestScenarios[i].char_ranges[j].length() * kGlyphSize,
render_text.lines()[j].size.width());
}
}
}
TEST_F(RenderTextTest, Multiline_LineBreakerBehavior) {
const int kGlyphSize = 5;
const struct {
const wchar_t* const text;
const WordWrapBehavior behavior;
const Range char_ranges[3];
} kTestScenarios[] = {
{ L"a single run", IGNORE_LONG_WORDS,
{Range(0, 2), Range(2, 9), Range(9, 12) } },
// 3 words: "That's ", ""good". ", "aaa" and 7 runs: "That", "'", "s ",
// """, "good", "". ", "aaa". They all mixed together.
{ L"That's \"good\". aaa", IGNORE_LONG_WORDS,
{Range(0, 7), Range(7, 15), Range(15, 18) } },
// Test "\"" should be put into a new line correctly.
{ L"a \"good\" one.", IGNORE_LONG_WORDS,
{Range(0, 2), Range(2, 9), Range(9, 13) } },
// Test for full-width space.
{ L"That's\x3000good.\x3000yyy", IGNORE_LONG_WORDS,
{Range(0, 7), Range(7, 13), Range(13, 16) } },
{ L"a single run", TRUNCATE_LONG_WORDS,
{Range(0, 2), Range(2, 6), Range(9, 12) } },
{ L"That's \"good\". aaa", TRUNCATE_LONG_WORDS,
{Range(0, 4), Range(7, 11), Range(15, 18) } },
{ L"That's good. aaa", TRUNCATE_LONG_WORDS,
{Range(0, 4), Range(7, 11), Range(13, 16) } },
{ L"a \"good\" one.", TRUNCATE_LONG_WORDS,
{Range(0, 2), Range(2, 6), Range(9, 13) } },
{ L"asingleword", WRAP_LONG_WORDS,
{Range(0, 4), Range(4, 8), Range(8, 11) } },
{ L"That's good", WRAP_LONG_WORDS,
{Range(0, 4), Range(4, 7), Range(7, 11) } },
{ L"That's \"g\".", WRAP_LONG_WORDS,
{Range(0, 4), Range(4, 7), Range(7, 11) } },
};
RenderTextHarfBuzz render_text;
render_text.SetMultiline(true);
render_text.set_glyph_width_for_test(kGlyphSize);
render_text.SetDisplayRect(Rect(0, 0, kGlyphSize * 4, 0));
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestScenarios); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestScenarios[i].text));
render_text.SetWordWrapBehavior(kTestScenarios[i].behavior);
render_text.Draw(&canvas);
ASSERT_EQ(3u, render_text.lines().size());
for (size_t j = 0; j < render_text.lines().size(); ++j) {
SCOPED_TRACE(base::StringPrintf("%" PRIuS "-th line", j));
// Merge all the segments ranges in the same line.
size_t segment_size = render_text.lines()[j].segments.size();
Range line_range;
if (segment_size > 0)
line_range = Range(
render_text.lines()[j].segments[0].char_range.start(),
render_text.lines()[j].segments[segment_size - 1].char_range.end());
EXPECT_EQ(kTestScenarios[i].char_ranges[j], line_range);
EXPECT_EQ(kTestScenarios[i].char_ranges[j].length() * kGlyphSize,
render_text.lines()[j].size.width());
}
}
}
// Test that Surrogate pairs or combining character sequences do not get
// separated by line breaking.
TEST_F(RenderTextTest, Multiline_SurrogatePairsOrCombiningChars) {
RenderTextHarfBuzz render_text;
render_text.SetMultiline(true);
render_text.SetWordWrapBehavior(WRAP_LONG_WORDS);
// Below is 'MUSICAL SYMBOL G CLEF' (U+1D11E), which is represented in UTF-16
// as two code units forming a surrogate pair: 0xD834 0xDD1E.
const base::char16 kSurrogate[] = {0xD834, 0xDD1E, 0};
const base::string16 text_surrogate(kSurrogate);
const int kSurrogateWidth =
GetStringWidth(kSurrogate, render_text.font_list());
// Below is a Devanagari two-character combining sequence U+0921 U+093F. The
// sequence forms a single display character and should not be separated.
const base::char16 kCombiningChars[] = {0x921, 0x93F, 0};
const base::string16 text_combining(kCombiningChars);
const int kCombiningCharsWidth =
GetStringWidth(kCombiningChars, render_text.font_list());
const struct {
const base::string16 text;
const int display_width;
const Range char_ranges[3];
} kTestScenarios[] = {
{ text_surrogate + text_surrogate + text_surrogate,
kSurrogateWidth / 2 * 3,
{ Range(0, 2), Range(2, 4), Range(4, 6) } },
{ text_surrogate + UTF8ToUTF16(" ") + kCombiningChars,
std::min(kSurrogateWidth, kCombiningCharsWidth) / 2,
{ Range(0, 2), Range(2, 3), Range(3, 5) } },
};
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestScenarios); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(kTestScenarios[i].text);
render_text.SetDisplayRect(Rect(0, 0, kTestScenarios[i].display_width, 0));
render_text.Draw(&canvas);
ASSERT_EQ(3u, render_text.lines().size());
for (size_t j = 0; j < render_text.lines().size(); ++j) {
SCOPED_TRACE(base::StringPrintf("%" PRIuS "-th line", j));
// There is only one segment in each line.
EXPECT_EQ(kTestScenarios[i].char_ranges[j],
render_text.lines()[j].segments[0].char_range);
}
}
}
// Test that Zero width characters have the correct line breaking behavior.
TEST_F(RenderTextTest, Multiline_ZeroWidthChars) {
RenderTextHarfBuzz render_text;
render_text.SetMultiline(true);
render_text.SetWordWrapBehavior(WRAP_LONG_WORDS);
const base::char16 kZeroWidthSpace = {0x200B};
const base::string16 text(UTF8ToUTF16("test") + kZeroWidthSpace +
UTF8ToUTF16("\n") + kZeroWidthSpace +
UTF8ToUTF16("test."));
const int kTestWidth =
GetStringWidth(UTF8ToUTF16("test"), render_text.font_list());
const Range char_ranges[3] = {Range(0, 5), Range(6, 11), Range(11, 12)};
Canvas canvas;
render_text.SetText(text);
render_text.SetDisplayRect(Rect(0, 0, kTestWidth, 0));
render_text.Draw(&canvas);
ASSERT_EQ(3u, render_text.lines().size());
for (size_t j = 0; j < render_text.lines().size(); ++j) {
SCOPED_TRACE(base::StringPrintf("%" PRIuS "-th line", j));
int segment_size = render_text.lines()[j].segments.size();
ASSERT_GT(segment_size, 0);
Range line_range(
render_text.lines()[j].segments[0].char_range.start(),
render_text.lines()[j].segments[segment_size - 1].char_range.end());
EXPECT_EQ(char_ranges[j], line_range);
}
}
TEST_F(RenderTextTest, NewlineWithoutMultilineFlag) {
const wchar_t* kTestStrings[] = {
L"abc\ndef", L"a \n b ", L"ab\n", L"a\n\nb", L"\nab", L"\n",
};
RenderTextHarfBuzz render_text;
render_text.SetDisplayRect(Rect(200, 1000));
Canvas canvas;
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i]));
render_text.Draw(&canvas);
EXPECT_EQ(1U, render_text.lines_.size());
}
}
// Make sure the horizontal positions of runs in a line (left-to-right for
// LTR languages and right-to-left for RTL languages).
TEST_F(RenderTextTest, HarfBuzz_HorizontalPositions) {
const struct {
const wchar_t* const text;
const Range first_run_char_range;
const Range second_run_char_range;
bool is_rtl;
} kTestStrings[] = {
{ L"abc\x3042\x3044\x3046\x3048\x304A", Range(0, 3), Range(3, 8), false },
{ L"\x062A\x0641\x0627\x062D"
L"\x05EA\x05E4\x05D5\x05D6\x05D9\x05DA\x05DB\x05DD",
Range(0, 4), Range(4, 12), true },
};
RenderTextHarfBuzz render_text;
Canvas canvas;
TestSkiaTextRenderer renderer(&canvas);
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text.SetText(WideToUTF16(kTestStrings[i].text));
render_text.EnsureLayout();
const internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(2U, run_list->runs().size());
EXPECT_EQ(kTestStrings[i].first_run_char_range, run_list->runs()[0]->range);
EXPECT_EQ(kTestStrings[i].second_run_char_range,
run_list->runs()[1]->range);
// If it's RTL, the visual order is reversed.
if (kTestStrings[i].is_rtl) {
EXPECT_EQ(1U, run_list->logical_to_visual(0));
EXPECT_EQ(0U, run_list->logical_to_visual(1));
} else {
EXPECT_EQ(0U, run_list->logical_to_visual(0));
EXPECT_EQ(1U, run_list->logical_to_visual(1));
}
render_text.DrawVisualText(&renderer);
std::vector<TestSkiaTextRenderer::TextLog> text_log;
renderer.GetTextLogAndReset(&text_log);
EXPECT_EQ(2U, text_log.size());
// Verifies the DrawText happens in the visual order and left-to-right.
// If the text is RTL, the logically first run should be drawn at last.
EXPECT_EQ(run_list->runs()[run_list->logical_to_visual(0)]->glyph_count,
text_log[0].glyph_count);
EXPECT_EQ(run_list->runs()[run_list->logical_to_visual(1)]->glyph_count,
text_log[1].glyph_count);
EXPECT_LT(text_log[0].origin.x(), text_log[1].origin.x());
}
}
// Test TextRunHarfBuzz's cluster finding logic.
TEST_F(RenderTextTest, HarfBuzz_Clusters) {
struct {
uint32_t glyph_to_char[4];
Range chars[4];
Range glyphs[4];
bool is_rtl;
} cases[] = {
{ // From string "A B C D" to glyphs "a b c d".
{ 0, 1, 2, 3 },
{ Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) },
{ Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) },
false
},
{ // From string "A B C D" to glyphs "d c b a".
{ 3, 2, 1, 0 },
{ Range(0, 1), Range(1, 2), Range(2, 3), Range(3, 4) },
{ Range(3, 4), Range(2, 3), Range(1, 2), Range(0, 1) },
true
},
{ // From string "A B C D" to glyphs "ab c c d".
{ 0, 2, 2, 3 },
{ Range(0, 2), Range(0, 2), Range(2, 3), Range(3, 4) },
{ Range(0, 1), Range(0, 1), Range(1, 3), Range(3, 4) },
false
},
{ // From string "A B C D" to glyphs "d c c ba".
{ 3, 2, 2, 0 },
{ Range(0, 2), Range(0, 2), Range(2, 3), Range(3, 4) },
{ Range(3, 4), Range(3, 4), Range(1, 3), Range(0, 1) },
true
},
};
internal::TextRunHarfBuzz run((Font()));
run.range = Range(0, 4);
run.glyph_count = 4;
run.glyph_to_char.resize(4);
for (size_t i = 0; i < arraysize(cases); ++i) {
std::copy(cases[i].glyph_to_char, cases[i].glyph_to_char + 4,
run.glyph_to_char.begin());
run.is_rtl = cases[i].is_rtl;
for (size_t j = 0; j < 4; ++j) {
SCOPED_TRACE(base::StringPrintf("Case %" PRIuS ", char %" PRIuS, i, j));
Range chars;
Range glyphs;
run.GetClusterAt(j, &chars, &glyphs);
EXPECT_EQ(cases[i].chars[j], chars);
EXPECT_EQ(cases[i].glyphs[j], glyphs);
EXPECT_EQ(cases[i].glyphs[j], run.CharRangeToGlyphRange(chars));
}
}
}
// Ensure that graphemes with multiple code points do not get split.
TEST_F(RenderTextTest, HarfBuzz_SubglyphGraphemeCases) {
const wchar_t* cases[] = {
// "A" with a combining umlaut, followed by a "B".
L"A\x0308" L"B",
// Devanagari biconsonantal conjunct "ki", followed by an "a".
L"\x0915\x093f\x0905",
// Thai consonant and vowel pair "cho chan" + "sara am", followed by Thai
// digit 0.
L"\x0e08\x0e33\x0E50",
};
RenderTextHarfBuzz render_text;
for (size_t i = 0; i < arraysize(cases); ++i) {
SCOPED_TRACE(base::StringPrintf("Case %" PRIuS, i));
base::string16 text = WideToUTF16(cases[i]);
render_text.SetText(text);
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(1U, run_list->size());
internal::TextRunHarfBuzz* run = run_list->runs()[0];
base::i18n::BreakIterator* iter = render_text.grapheme_iterator_.get();
auto first_grapheme_bounds = run->GetGraphemeBounds(iter, 0);
EXPECT_EQ(first_grapheme_bounds, run->GetGraphemeBounds(iter, 1));
auto second_grapheme_bounds = run->GetGraphemeBounds(iter, 2);
EXPECT_EQ(first_grapheme_bounds.end(), second_grapheme_bounds.start());
}
}
// Test the partition of a multi-grapheme cluster into grapheme ranges.
TEST_F(RenderTextTest, HarfBuzz_SubglyphGraphemePartition) {
struct {
uint32_t glyph_to_char[2];
Range bounds[4];
bool is_rtl;
} cases[] = {
{ // From string "A B C D" to glyphs "a bcd".
{ 0, 1 },
{ Range(0, 10), Range(10, 13), Range(13, 17), Range(17, 20) },
false
},
{ // From string "A B C D" to glyphs "ab cd".
{ 0, 2 },
{ Range(0, 5), Range(5, 10), Range(10, 15), Range(15, 20) },
false
},
{ // From string "A B C D" to glyphs "dcb a".
{ 1, 0 },
{ Range(10, 20), Range(7, 10), Range(3, 7), Range(0, 3) },
true
},
{ // From string "A B C D" to glyphs "dc ba".
{ 2, 0 },
{ Range(15, 20), Range(10, 15), Range(5, 10), Range(0, 5) },
true
},
};
internal::TextRunHarfBuzz run((Font()));
run.range = Range(0, 4);
run.glyph_count = 2;
run.glyph_to_char.resize(2);
run.positions.reset(new SkPoint[4]);
run.width = 20;
const base::string16 kString = ASCIIToUTF16("abcd");
std::unique_ptr<base::i18n::BreakIterator> iter(new base::i18n::BreakIterator(
kString, base::i18n::BreakIterator::BREAK_CHARACTER));
ASSERT_TRUE(iter->Init());
for (size_t i = 0; i < arraysize(cases); ++i) {
std::copy(cases[i].glyph_to_char, cases[i].glyph_to_char + 2,
run.glyph_to_char.begin());
run.is_rtl = cases[i].is_rtl;
for (int j = 0; j < 2; ++j)
run.positions[j].set(j * 10, 0);
for (size_t j = 0; j < 4; ++j) {
SCOPED_TRACE(base::StringPrintf("Case %" PRIuS ", char %" PRIuS, i, j));
EXPECT_EQ(cases[i].bounds[j],
run.GetGraphemeBounds(iter.get(), j).Round());
}
}
}
TEST_F(RenderTextTest, HarfBuzz_RunDirection) {
RenderTextHarfBuzz render_text;
const base::string16 mixed = WideToUTF16(
L"\x05D0\x05D1"
L"1234"
L"\x05D2\x05D3"
L"abc");
render_text.SetText(mixed);
// Get the run list for both display directions.
render_text.SetDirectionalityMode(DIRECTIONALITY_FORCE_LTR);
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(4U, run_list->size());
EXPECT_TRUE(run_list->runs()[0]->is_rtl);
EXPECT_FALSE(run_list->runs()[1]->is_rtl);
EXPECT_TRUE(run_list->runs()[2]->is_rtl);
EXPECT_FALSE(run_list->runs()[3]->is_rtl);
// The Latin letters should appear to the right of the other runs.
EXPECT_EQ(2U, run_list->logical_to_visual(0));
EXPECT_EQ(1U, run_list->logical_to_visual(1));
EXPECT_EQ(0U, run_list->logical_to_visual(2));
EXPECT_EQ(3U, run_list->logical_to_visual(3));
render_text.SetDirectionalityMode(DIRECTIONALITY_FORCE_RTL);
render_text.EnsureLayout();
run_list = render_text.GetRunList();
ASSERT_EQ(4U, run_list->size());
EXPECT_TRUE(run_list->runs()[0]->is_rtl);
EXPECT_FALSE(run_list->runs()[1]->is_rtl);
EXPECT_TRUE(run_list->runs()[2]->is_rtl);
EXPECT_FALSE(run_list->runs()[3]->is_rtl);
// The Latin letters should appear to the left of the other runs.
EXPECT_EQ(3U, run_list->logical_to_visual(0));
EXPECT_EQ(2U, run_list->logical_to_visual(1));
EXPECT_EQ(1U, run_list->logical_to_visual(2));
EXPECT_EQ(0U, run_list->logical_to_visual(3));
}
TEST_F(RenderTextTest, HarfBuzz_BreakRunsByUnicodeBlocks) {
RenderTextHarfBuzz render_text;
// The '\x25B6' "play character" should break runs. http://crbug.com/278913
render_text.SetText(WideToUTF16(L"x\x25B6y"));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(3U, run_list->size());
EXPECT_EQ(Range(0, 1), run_list->runs()[0]->range);
EXPECT_EQ(Range(1, 2), run_list->runs()[1]->range);
EXPECT_EQ(Range(2, 3), run_list->runs()[2]->range);
render_text.SetText(WideToUTF16(L"x \x25B6 y"));
render_text.EnsureLayout();
run_list = render_text.GetRunList();
ASSERT_EQ(4U, run_list->size());
EXPECT_EQ(Range(0, 2), run_list->runs()[0]->range);
EXPECT_EQ(Range(2, 3), run_list->runs()[1]->range);
EXPECT_EQ(Range(3, 4), run_list->runs()[2]->range);
EXPECT_EQ(Range(4, 5), run_list->runs()[3]->range);
}
TEST_F(RenderTextTest, HarfBuzz_BreakRunsByEmoji) {
RenderTextHarfBuzz render_text;
// \xF0\x9F\x98\x81 (U+1F601) is smile icon emoji. \xE2\x9C\xA8 (U+2728) is
// a sparkle icon. Both can be drawn with color emoji fonts, so runs should be
// separated. See crbug.com/448909
render_text.SetText(UTF8ToUTF16("x\xF0\x9F\x98\x81y\xE2\x9C\xA8"));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(4U, run_list->size());
EXPECT_EQ(Range(0, 1), run_list->runs()[0]->range);
// The length is 2 since U+1F601 is represented as a surrogate pair in UTF16.
EXPECT_EQ(Range(1, 3), run_list->runs()[1]->range);
EXPECT_EQ(Range(3, 4), run_list->runs()[2]->range);
EXPECT_EQ(Range(4, 5), run_list->runs()[3]->range);
}
TEST_F(RenderTextTest, HarfBuzz_BreakRunsByAscii) {
RenderTextHarfBuzz render_text;
// \xF0\x9F\x90\xB1 (U+1F431) is a cat face. It should be put into a separate
// run from the ASCII period character.
render_text.SetText(UTF8ToUTF16("\xF0\x9F\x90\xB1."));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(2U, run_list->size());
// U+1F431 is represented as a surrogate pair in UTF16.
EXPECT_EQ(Range(0, 2), run_list->runs()[0]->range);
EXPECT_EQ(Range(2, 3), run_list->runs()[1]->range);
}
TEST_F(RenderTextTest, GlyphBounds) {
const wchar_t* kTestStrings[] = {
L"asdf 1234 qwer", L"\x0647\x0654", L"\x0645\x0631\x062D\x0628\x0627"
};
std::unique_ptr<RenderText> render_text(new RenderTextHarfBuzz);
for (size_t i = 0; i < arraysize(kTestStrings); ++i) {
render_text->SetText(WideToUTF16(kTestStrings[i]));
render_text->EnsureLayout();
for (size_t j = 0; j < render_text->text().length(); ++j)
EXPECT_FALSE(render_text->GetGlyphBounds(j).is_empty());
}
}
// Ensure that shaping with a non-existent font does not cause a crash.
TEST_F(RenderTextTest, HarfBuzz_NonExistentFont) {
RenderTextHarfBuzz render_text;
render_text.SetText(ASCIIToUTF16("test"));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(1U, run_list->size());
internal::TextRunHarfBuzz* run = run_list->runs()[0];
render_text.ShapeRunWithFont(render_text.text(),
Font("TheFontThatDoesntExist", 13),
FontRenderParams(), run);
}
// Ensure an empty run returns sane values to queries.
TEST_F(RenderTextTest, HarfBuzz_EmptyRun) {
internal::TextRunHarfBuzz run((Font()));
const base::string16 kString = ASCIIToUTF16("abcdefgh");
std::unique_ptr<base::i18n::BreakIterator> iter(new base::i18n::BreakIterator(
kString, base::i18n::BreakIterator::BREAK_CHARACTER));
ASSERT_TRUE(iter->Init());
run.range = Range(3, 8);
run.glyph_count = 0;
EXPECT_EQ(Range(0, 0), run.CharRangeToGlyphRange(Range(4, 5)));
EXPECT_EQ(Range(0, 0), run.GetGraphemeBounds(iter.get(), 4).Round());
Range chars;
Range glyphs;
run.GetClusterAt(4, &chars, &glyphs);
EXPECT_EQ(Range(3, 8), chars);
EXPECT_EQ(Range(0, 0), glyphs);
}
// Ensure the line breaker doesn't compute the word's width bigger than the
// actual size. See http://crbug.com/470073
TEST_F(RenderTextTest, HarfBuzz_WordWidthWithDiacritics) {
RenderTextHarfBuzz render_text;
const base::string16 kWord = WideToUTF16(L"\u0906\u092A\u0915\u0947 ");
render_text.SetText(kWord);
const SizeF text_size = render_text.GetStringSizeF();
render_text.SetText(kWord + kWord);
render_text.SetMultiline(true);
EXPECT_EQ(text_size.width() * 2, render_text.GetStringSizeF().width());
EXPECT_EQ(text_size.height(), render_text.GetStringSizeF().height());
render_text.SetDisplayRect(Rect(0, 0, std::ceil(text_size.width()), 0));
EXPECT_NEAR(text_size.width(), render_text.GetStringSizeF().width(), 1.0f);
EXPECT_EQ(text_size.height() * 2, render_text.GetStringSizeF().height());
}
// Ensure a string fits in a display rect with a width equal to the string's.
TEST_F(RenderTextTest, StringFitsOwnWidth) {
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
const base::string16 kString = ASCIIToUTF16("www.example.com");
render_text->SetText(kString);
render_text->ApplyWeight(Font::Weight::BOLD, Range(0, 3));
render_text->SetElideBehavior(ELIDE_TAIL);
render_text->SetDisplayRect(Rect(0, 0, 500, 100));
EXPECT_EQ(kString, render_text->GetDisplayText());
render_text->SetDisplayRect(Rect(0, 0, render_text->GetContentWidth(), 100));
EXPECT_EQ(kString, render_text->GetDisplayText());
}
// TODO(derat): Figure out why this fails on Windows: http://crbug.com/427184
#if !defined(OS_WIN)
// Ensure that RenderText examines all of the fonts in its FontList before
// falling back to other fonts.
TEST_F(RenderTextTest, HarfBuzz_FontListFallback) {
// Double-check that the requested fonts are present.
FontList font_list("Arial, Symbol, 12px");
const std::vector<Font>& fonts = font_list.GetFonts();
ASSERT_EQ(2u, fonts.size());
ASSERT_EQ("arial",
base::ToLowerASCII(fonts[0].GetActualFontNameForTesting()));
ASSERT_EQ("symbol",
base::ToLowerASCII(fonts[1].GetActualFontNameForTesting()));
// "⊕" (CIRCLED PLUS) should be rendered with Symbol rather than falling back
// to some other font that's present on the system.
RenderTextHarfBuzz render_text;
render_text.SetFontList(font_list);
render_text.SetText(UTF8ToUTF16("\xE2\x8A\x95"));
const std::vector<RenderText::FontSpan> spans =
render_text.GetFontSpansForTesting();
ASSERT_EQ(static_cast<size_t>(1), spans.size());
EXPECT_EQ("Symbol", spans[0].first.GetFontName());
}
#endif // !defined(OS_WIN)
// Ensure that the fallback fonts of the Uniscribe font are tried for shaping.
#if defined(OS_WIN)
TEST_F(RenderTextTest, HarfBuzz_UniscribeFallback) {
RenderTextHarfBuzz render_text;
PlatformFontWin* font_win = new PlatformFontWin("Meiryo", 12);
// Japanese name for Meiryo. This name won't be found in the system's linked
// fonts, forcing RTHB to try the Uniscribe font and its fallbacks.
font_win->font_ref_->font_name_ = WideToUTF8(L"\x30e1\x30a4\x30ea\x30aa");
FontList font_list((Font(font_win)));
render_text.SetFontList(font_list);
// Korean character "han".
render_text.SetText(WideToUTF16(L"\xd55c"));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(1U, run_list->size());
EXPECT_EQ(0U, run_list->runs()[0]->CountMissingGlyphs());
}
#endif // defined(OS_WIN)
// Ensure that the fallback fonts offered by gfx::GetFallbackFonts() are
// tried. Note this test assumes the font "Arial" doesn't provide a unicode
// glyph for a particular character, and that there exists a system fallback
// font which does.
// TODO(msw): Fallback doesn't find a glyph on Linux.
#if !defined(OS_LINUX)
TEST_F(RenderTextTest, HarfBuzz_UnicodeFallback) {
RenderTextHarfBuzz render_text;
render_text.SetFontList(FontList("Arial, 12px"));
// Korean character "han".
render_text.SetText(WideToUTF16(L"\xd55c"));
render_text.EnsureLayout();
internal::TextRunList* run_list = render_text.GetRunList();
ASSERT_EQ(1U, run_list->size());
EXPECT_EQ(0U, run_list->runs()[0]->CountMissingGlyphs());
}
#endif // !defined(OS_LINUX)
// http://crbug/624513
#if defined(OS_WIN)
#define MAYBE_TextDoesntClip DISABLED_TextDoesntClip
#else
#define MAYBE_TextDoesntClip TextDoesntClip
#endif
// Ensure that the width reported by RenderText is sufficient for drawing. Draws
// to a canvas and checks if any pixel beyond the bounding rectangle is colored.
TEST_F(RenderTextTest, MAYBE_TextDoesntClip) {
const wchar_t* kTestStrings[] = {
L" ",
// TODO(dschuyler): Underscores draw outside GetStringSize;
// crbug.com/459812. This appears to be a preexisting issue that wasn't
// revealed by the prior unit tests.
// L"TEST_______",
L"TEST some stuff",
L"WWWWWWWWWW",
L"gAXAXAXAXAXAXA",
// TODO(dschuyler): A-Ring draws outside GetStringSize; crbug.com/459812.
// L"g\x00C5X\x00C5X\x00C5X\x00C5X\x00C5X\x00C5X\x00C5",
L"\x0647\x0654\x0647\x0654\x0647\x0654\x0647\x0654\x0645\x0631\x062D"
L"\x0628\x0627"};
const Size kCanvasSize(300, 50);
const int kTestSize = 10;
sk_sp<SkSurface> surface =
SkSurface::MakeRasterN32Premul(kCanvasSize.width(), kCanvasSize.height());
Canvas canvas(sk_ref_sp(surface->getCanvas()), 1.0f);
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetHorizontalAlignment(ALIGN_LEFT);
render_text->SetColor(SK_ColorBLACK);
for (auto* string : kTestStrings) {
surface->getCanvas()->clear(SK_ColorWHITE);
render_text->SetText(WideToUTF16(string));
const Size string_size = render_text->GetStringSize();
render_text->ApplyBaselineStyle(SUPERSCRIPT, Range(1, 2));
render_text->ApplyBaselineStyle(SUPERIOR, Range(3, 4));
render_text->ApplyBaselineStyle(INFERIOR, Range(5, 6));
render_text->ApplyBaselineStyle(SUBSCRIPT, Range(7, 8));
render_text->SetWeight(Font::Weight::BOLD);
render_text->SetDisplayRect(
Rect(kTestSize, kTestSize, string_size.width(), string_size.height()));
// Allow the RenderText to paint outside of its display rect.
render_text->set_clip_to_display_rect(false);
ASSERT_LE(string_size.width() + kTestSize * 2, kCanvasSize.width());
render_text->Draw(&canvas);
ASSERT_LT(string_size.width() + kTestSize, kCanvasSize.width());
SkPixmap pixmap;
surface->peekPixels(&pixmap);
const uint32_t* buffer = static_cast<const uint32_t*>(pixmap.addr());
ASSERT_NE(nullptr, buffer);
TestRectangleBuffer rect_buffer(string, buffer, kCanvasSize.width(),
kCanvasSize.height());
{
#if !defined(OS_CHROMEOS)
int top_test_height = kTestSize;
#if defined(OS_WIN)
// Windows 8+ draws 1 pixel above the display rect.
if (base::win::GetVersion() >= base::win::VERSION_WIN8)
top_test_height = kTestSize - 1;
#endif // OS_WIN
// TODO(dschuyler): On ChromeOS text draws above the GetStringSize rect.
SCOPED_TRACE("TextDoesntClip Top Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, 0, kCanvasSize.width(),
top_test_height);
#endif // !OS_CHROMEOS
}
{
int bottom_test_y = kTestSize + string_size.height();
int bottom_test_height = kTestSize;
#if defined(OS_WIN)
// Windows 8+ draws 1 pixel below the display rect.
if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
bottom_test_y = kTestSize + string_size.height() + 1;
bottom_test_height = kTestSize - 1;
}
#endif // OS_WIN
SCOPED_TRACE("TextDoesntClip Bottom Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, bottom_test_y,
kCanvasSize.width(), bottom_test_height);
}
{
SCOPED_TRACE("TextDoesntClip Left Side");
#if defined(OS_WIN) || defined(OS_MACOSX) || defined(OS_CHROMEOS)
// TODO(dschuyler): On Windows, Chrome OS and Mac smoothing draws to the
// left of text. This appears to be a preexisting issue that wasn't
// revealed by the prior unit tests.
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize, kTestSize - 1,
string_size.height());
#else
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize, kTestSize,
string_size.height());
#endif
}
{
SCOPED_TRACE("TextDoesntClip Right Side");
#if !defined(OS_MACOSX)
// TODO(dschuyler): On Mac text draws to right of GetStringSize. This
// appears to be a preexisting issue that wasn't revealed by the prior
// unit tests.
rect_buffer.EnsureSolidRect(SK_ColorWHITE,
kTestSize + string_size.width(), kTestSize,
kTestSize, string_size.height());
#endif
}
}
}
// Ensure that the text will clip to the display rect. Draws to a canvas and
// checks whether any pixel beyond the bounding rectangle is colored.
TEST_F(RenderTextTest, TextDoesClip) {
const wchar_t* kTestStrings[] = {L"TEST", L"W", L"WWWW", L"gAXAXWWWW"};
const Size kCanvasSize(300, 50);
const int kTestSize = 10;
sk_sp<SkSurface> surface =
SkSurface::MakeRasterN32Premul(kCanvasSize.width(), kCanvasSize.height());
Canvas canvas(sk_ref_sp(surface->getCanvas()), 1.0f);
std::unique_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetHorizontalAlignment(ALIGN_LEFT);
render_text->SetColor(SK_ColorBLACK);
for (auto* string : kTestStrings) {
surface->getCanvas()->clear(SK_ColorWHITE);
render_text->SetText(WideToUTF16(string));
const Size string_size = render_text->GetStringSize();
int fake_width = string_size.width() / 2;
int fake_height = string_size.height() / 2;
render_text->SetDisplayRect(
Rect(kTestSize, kTestSize, fake_width, fake_height));
render_text->set_clip_to_display_rect(true);
render_text->Draw(&canvas);
ASSERT_LT(string_size.width() + kTestSize, kCanvasSize.width());
SkPixmap pixmap;
surface->peekPixels(&pixmap);
const uint32_t* buffer = static_cast<const uint32_t*>(pixmap.addr());
ASSERT_NE(nullptr, buffer);
TestRectangleBuffer rect_buffer(string, buffer, kCanvasSize.width(),
kCanvasSize.height());
{
SCOPED_TRACE("TextDoesClip Top Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, 0, kCanvasSize.width(),
kTestSize);
}
{
SCOPED_TRACE("TextDoesClip Bottom Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize + fake_height,
kCanvasSize.width(), kTestSize);
}
{
SCOPED_TRACE("TextDoesClip Left Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, 0, kTestSize, kTestSize,
fake_height);
}
{
SCOPED_TRACE("TextDoesClip Right Side");
rect_buffer.EnsureSolidRect(SK_ColorWHITE, kTestSize + fake_width,
kTestSize, kTestSize, fake_height);
}
}
}
#if defined(OS_MACOSX)
TEST_F(RenderTextTest, Mac_ElidedText) {
RenderTextMac render_text;
base::string16 text(ASCIIToUTF16("This is an example."));
render_text.SetText(text);
Size string_size = render_text.GetStringSize();
render_text.SetDisplayRect(Rect(string_size));
render_text.EnsureLayout();
// NOTE: Character and glyph counts are only comparable for simple text.
EXPECT_EQ(text.size(),
static_cast<size_t>(CTLineGetGlyphCount(render_text.line_)));
render_text.SetElideBehavior(ELIDE_TAIL);
string_size.set_width(string_size.width() / 2);
render_text.SetDisplayRect(Rect(string_size));
render_text.EnsureLayout();
CFIndex glyph_count = CTLineGetGlyphCount(render_text.line_);
EXPECT_GT(text.size(), static_cast<size_t>(glyph_count));
EXPECT_NE(0, glyph_count);
}
#endif
// Ensure color changes are picked up by the RenderText implementation.
TEST_F(RenderTextTest, ColorChange) {
RenderTextAllBackends backend;
while (backend.Advance()) {
SCOPED_TRACE(testing::Message() << "backend: " << backend.GetName());
backend->SetText(ASCIIToUTF16("x"));
backend.DrawVisualText();
std::vector<TestSkiaTextRenderer::TextLog> text_log;
backend.GetTextLogAndReset(&text_log);
EXPECT_EQ(1u, text_log.size());
EXPECT_EQ(SK_ColorBLACK, text_log[0].color);
backend->SetColor(SK_ColorRED);
backend.DrawVisualText();
backend.GetTextLogAndReset(&text_log);
EXPECT_EQ(1u, text_log.size());
EXPECT_EQ(SK_ColorRED, text_log[0].color);
}
}
// Ensure style information propagates to the typeface on the text renderer.
TEST_F(RenderTextTest, StylePropagated) {
RenderTextAllBackends backend;
// Default-constructed fonts on Mac are system fonts. These can have all kinds
// of weird weights and style, which are preserved by PlatformFontMac, but do
// not map simply to a SkTypeface::Style (the full details in SkFontStyle is
// needed). They also vary depending on the OS version, so set a known font.
FontList font_list(Font("Arial", 10));
while (backend.Advance()) {
SCOPED_TRACE(testing::Message() << "backend: " << backend.GetName());
backend->SetText(ASCIIToUTF16("x"));
backend->SetFontList(font_list);
backend.DrawVisualText();
EXPECT_EQ(SkTypeface::kNormal, backend.paint().getTypeface()->style());
backend->SetWeight(Font::Weight::BOLD);
backend.DrawVisualText();
EXPECT_EQ(SkTypeface::kBold, backend.paint().getTypeface()->style());
backend->SetStyle(TextStyle::ITALIC, true);
backend.DrawVisualText();
EXPECT_EQ(SkTypeface::kBoldItalic, backend.paint().getTypeface()->style());
backend->SetWeight(Font::Weight::NORMAL);
backend.DrawVisualText();
EXPECT_EQ(SkTypeface::kItalic, backend.paint().getTypeface()->style());
}
}
// Ensure the painter adheres to RenderText::subpixel_rendering_suppressed().
TEST_F(RenderTextTest, SubpixelRenderingSuppressed) {
RenderTextAllBackends backend;
while (backend.Advance()) {
SCOPED_TRACE(testing::Message() << "backend: " << backend.GetName());
backend->SetText(ASCIIToUTF16("x"));
backend.DrawVisualText();
#if defined(OS_LINUX)
// On Linux, whether subpixel AA is supported is determined by the platform
// FontConfig. Force it into a particular style after computing runs. Other
// platforms use a known default FontRenderParams from a static local.
backend.GetHarfbuzzRunList()->runs()[0]->render_params.subpixel_rendering =
FontRenderParams::SUBPIXEL_RENDERING_RGB;
backend.DrawVisualText();
#endif
EXPECT_TRUE(backend.paint().isLCDRenderText());
backend->set_subpixel_rendering_suppressed(true);
backend.DrawVisualText();
#if defined(OS_LINUX)
// For Linux, runs shouldn't be re-calculated, and the suppression of the
// SUBPIXEL_RENDERING_RGB set above should now take effect. But, after
// checking, apply the override anyway to be explicit that it is suppressed.
EXPECT_FALSE(backend.paint().isLCDRenderText());
backend.GetHarfbuzzRunList()->runs()[0]->render_params.subpixel_rendering =
FontRenderParams::SUBPIXEL_RENDERING_RGB;
backend.DrawVisualText();
#endif
EXPECT_FALSE(backend.paint().isLCDRenderText());
}
}
} // namespace gfx