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chromium / chromium / src / a7fd79d2cddafb635489bd5a2a65dc647af6a927 / . / 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 <algorithm>
#include "base/format_macros.h"
#include "base/i18n/break_iterator.h"
#include "base/memory/scoped_ptr.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/strings/utf_string_conversions.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/break_list.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/render_text_harfbuzz.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#include "ui/gfx/render_text_win.h"
#endif
#if defined(OS_LINUX) && !defined(USE_OZONE)
#include "ui/gfx/render_text_pango.h"
#endif
using base::ASCIIToUTF16;
using base::UTF8ToUTF16;
using base::WideToUTF16;
namespace gfx {
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";
#if !defined(OS_MACOSX)
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";
#endif
// 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());
}
#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)
} // namespace
class RenderTextTest : public testing::Test {
};
TEST_F(RenderTextTest, DefaultStyle) {
// Check the default styles applied to new instances and adjusted text.
scoped_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));
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, SetColorAndStyle) {
// Ensure custom default styles persist across setting and clearing text.
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
const SkColor color = SK_ColorRED;
render_text->SetColor(color);
render_text->SetStyle(BOLD, true);
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->styles()[BOLD].EqualsValueForTesting(true));
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, ApplyColorAndStyle) {
scoped_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->ApplyStyle(BOLD, true, 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, 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));
expected_style.push_back(std::pair<size_t, bool>(5, false));
EXPECT_TRUE(render_text->styles()[BOLD].EqualsForTesting(expected_style));
// Ensure setting a color and style overrides the ranged colors and styles.
render_text->SetColor(SK_ColorBLUE);
EXPECT_TRUE(render_text->colors().EqualsValueForTesting(SK_ColorBLUE));
render_text->SetStyle(BOLD, false);
EXPECT_TRUE(render_text->styles()[BOLD].EqualsValueForTesting(false));
// Apply a color and style 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->ApplyStyle(BOLD, true, 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, bool> > expected_style_end;
expected_style_end.push_back(std::pair<size_t, bool>(0, false));
expected_style_end.push_back(std::pair<size_t, bool>(2, true));
EXPECT_TRUE(render_text->styles()[BOLD].EqualsForTesting(expected_style_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 // OS_MACOSX
}
#if defined(OS_LINUX) && !defined(USE_OZONE)
TEST_F(RenderTextTest, PangoAttributes) {
scoped_ptr<RenderText> render_text(RenderText::CreateNativeInstance());
render_text->SetText(ASCIIToUTF16("012345678"));
// Apply ranged BOLD/ITALIC styles and check the resulting Pango attributes.
render_text->ApplyStyle(BOLD, true, Range(2, 4));
render_text->ApplyStyle(ITALIC, true, Range(1, 3));
struct {
int start;
int end;
bool bold;
bool italic;
} cases[] = {
{ 0, 1, false, false },
{ 1, 2, false, true },
{ 2, 3, true, true },
{ 3, 4, true, false },
{ 4, INT_MAX, false, false },
};
int start = 0, end = 0;
RenderTextPango* rt_linux = static_cast<RenderTextPango*>(render_text.get());
rt_linux->EnsureLayout();
PangoAttrList* attributes = pango_layout_get_attributes(rt_linux->layout_);
PangoAttrIterator* iter = pango_attr_list_get_iterator(attributes);
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
pango_attr_iterator_range(iter, &start, &end);
EXPECT_EQ(cases[i].start, start);
EXPECT_EQ(cases[i].end, end);
PangoFontDescription* font = pango_font_description_new();
pango_attr_iterator_get_font(iter, font, NULL, NULL);
char* description_string = pango_font_description_to_string(font);
const base::string16 desc = ASCIIToUTF16(description_string);
const bool bold = desc.find(ASCIIToUTF16("Bold")) != std::string::npos;
EXPECT_EQ(cases[i].bold, bold);
const bool italic = desc.find(ASCIIToUTF16("Italic")) != std::string::npos;
EXPECT_EQ(cases[i].italic, italic);
pango_attr_iterator_next(iter);
pango_font_description_free(font);
g_free(description_string);
}
EXPECT_FALSE(pango_attr_iterator_next(iter));
pango_attr_iterator_destroy(iter);
}
#endif
// TODO(asvitkine): Cursor movements tests disabled on Mac because RenderTextMac
// does not implement this yet. http://crbug.com/131618
#if !defined(OS_MACOSX)
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());
}
TEST_F(RenderTextTest, ObscuredText) {
const base::string16 seuss = ASCIIToUTF16("hop on pop");
const base::string16 no_seuss = ASCIIToUTF16("**********");
scoped_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->GetLayoutText());
render_text->SetObscured(false);
EXPECT_EQ(seuss, render_text->text());
EXPECT_EQ(seuss, render_text->GetLayoutText());
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->GetLayoutText());
const base::char16 valid_surrogates[] = {0xD800, 0xDC00, 0};
render_text->SetText(valid_surrogates);
EXPECT_EQ(ASCIIToUTF16("*"), render_text->GetLayoutText());
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->TextIndexToLayoutIndex(0U));
EXPECT_EQ(1U, render_text->TextIndexToLayoutIndex(1U));
EXPECT_EQ(1U, render_text->TextIndexToLayoutIndex(2U));
EXPECT_EQ(0U, render_text->LayoutIndexToTextIndex(0U));
EXPECT_EQ(2U, render_text->LayoutIndexToTextIndex(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);
}
}
TEST_F(RenderTextTest, RevealObscuredText) {
const base::string16 seuss = ASCIIToUTF16("hop on pop");
const base::string16 no_seuss = ASCIIToUTF16("**********");
scoped_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->GetLayoutText());
// Valid reveal index and new revealed index clears previous one.
render_text->RenderText::SetObscuredRevealIndex(0);
EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(1);
EXPECT_EQ(ASCIIToUTF16("*o********"), render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**p*******"), render_text->GetLayoutText());
// Invalid reveal index.
render_text->RenderText::SetObscuredRevealIndex(-1);
EXPECT_EQ(no_seuss, render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(seuss.length() + 1);
EXPECT_EQ(no_seuss, render_text->GetLayoutText());
// SetObscured clears the revealed index.
render_text->RenderText::SetObscuredRevealIndex(0);
EXPECT_EQ(ASCIIToUTF16("h*********"), render_text->GetLayoutText());
render_text->SetObscured(false);
EXPECT_EQ(seuss, render_text->GetLayoutText());
render_text->SetObscured(true);
EXPECT_EQ(no_seuss, render_text->GetLayoutText());
// SetText clears the revealed index.
render_text->SetText(ASCIIToUTF16("new"));
EXPECT_EQ(ASCIIToUTF16("***"), render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**w"), render_text->GetLayoutText());
render_text->SetText(ASCIIToUTF16("new longer"));
EXPECT_EQ(ASCIIToUTF16("**********"), render_text->GetLayoutText());
// 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->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(0);
const base::char16 invalid_expect_0[] = {0xDC00, '*', '*', '*', '*', 0};
EXPECT_EQ(invalid_expect_0, render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(1);
const base::char16 invalid_expect_1[] = {'*', 0xD800, '*', '*', '*', 0};
EXPECT_EQ(invalid_expect_1, render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("**h**"), render_text->GetLayoutText());
// 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->GetLayoutText());
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->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(1);
EXPECT_EQ(valid_expect_0_and_1, render_text->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(2);
EXPECT_EQ(ASCIIToUTF16("*h***"), render_text->GetLayoutText());
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->GetLayoutText());
render_text->RenderText::SetObscuredRevealIndex(6);
EXPECT_EQ(valid_expect_5_and_6, render_text->GetLayoutText());
}
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* layout_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 },
// Complex script is not handled. In this example, the "\x0915\x093f" is a
// compound glyph, but only half of it is elided.
{ L"0123\x0915\x093f", L"0123\x0915\x2026", true },
// Surrogate pairs should be elided reasonably enough.
{ L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x05c1\x05b8", false },
{ L"0\x05e9\x05bc\x05c1\x05b8", L"0\x05e9\x05bc\x2026" , true },
{ L"01\x05e9\x05bc\x05c1\x05b8", L"01\x05e9\x2026" , true },
{ L"012\x05e9\x05bc\x05c1\x05b8", L"012\x2026\x200E" , true },
{ L"012\xF0\x9D\x84\x9E", L"012\xF0\x2026" , true },
};
scoped_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));
scoped_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_UNSAFE(cases); i++) {
// Compute expected width
expected_render_text->SetText(WideToUTF16(cases[i].layout_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 layout_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())
<< "->For case " << i << ": " << cases[i].text << "\n";
EXPECT_EQ(WideToUTF16(cases[i].layout_text), render_text->GetLayoutText())
<< "->For case " << i << ": " << cases[i].text << "\n";
expected_render_text->SetText(base::string16());
}
}
TEST_F(RenderTextTest, ElidedObscuredText) {
scoped_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"));
scoped_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->GetLayoutText());
}
TEST_F(RenderTextTest, TruncatedText) {
struct {
const wchar_t* text;
const wchar_t* layout_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" },
};
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->set_truncate_length(5);
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); i++) {
render_text->SetText(WideToUTF16(cases[i].text));
EXPECT_EQ(WideToUTF16(cases[i].text), render_text->text());
EXPECT_EQ(WideToUTF16(cases[i].layout_text), render_text->GetLayoutText())
<< "For case " << i << ": " << cases[i].text;
}
}
TEST_F(RenderTextTest, TruncatedObscuredText) {
scoped_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->GetLayoutText());
}
TEST_F(RenderTextTest, TruncatedCursorMovementLTR) {
scoped_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) {
scoped_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);
}
TEST_F(RenderTextTest, GetTextDirection) {
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 },
};
scoped_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_UNSAFE(cases); j++) {
render_text->SetText(WideToUTF16(cases[j].text));
render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_TEXT);
EXPECT_EQ(render_text->GetTextDirection(), cases[j].text_direction);
render_text->SetDirectionalityMode(DIRECTIONALITY_FROM_UI);
EXPECT_EQ(render_text->GetTextDirection(), ui_direction);
render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_LTR);
EXPECT_EQ(render_text->GetTextDirection(), base::i18n::LEFT_TO_RIGHT);
render_text->SetDirectionalityMode(DIRECTIONALITY_FORCE_RTL);
EXPECT_EQ(render_text->GetTextDirection(), 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->GetTextDirection(), base::i18n::LEFT_TO_RIGHT);
render_text->SetText(WideToUTF16(kRtl));
EXPECT_EQ(render_text->GetTextDirection(), base::i18n::RIGHT_TO_LEFT);
}
TEST_F(RenderTextTest, MoveCursorLeftRightInLtr) {
scoped_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) {
scoped_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) {
scoped_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) {
scoped_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) {
scoped_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) {
scoped_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);
}
// TODO(xji): temporarily disable in platform Win since the complex script
// characters turned into empty square due to font regression. So, not able
// to test 2 characters belong to the same grapheme.
#if defined(OS_LINUX)
TEST_F(RenderTextTest, MoveCursorLeftRight_ComplexScript) {
scoped_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());
}
#endif
// TODO(ckocagil): Enable for RenderTextHarfBuzz. http://crbug.com/383265
TEST_F(RenderTextTest, MoveCursorLeftRight_MeiryoUILigatures) {
scoped_ptr<RenderText> render_text(RenderText::CreateNativeInstance());
// 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
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(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 };
scoped_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));
#if !defined(OS_MACOSX)
EXPECT_FALSE(render_text->IsValidCursorIndex(1));
#endif
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 };
scoped_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());
}
}
}
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
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(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.
scoped_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_UNSAFE(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());
}
TEST_F(RenderTextTest, MoveCursorLeftRightWithSelection) {
scoped_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());
}
TEST_F(RenderTextTest, CenteredDisplayOffset) {
scoped_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());
// 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)
// TODO(xji): Make these work on Windows.
#if defined(OS_LINUX)
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());
}
}
}
TEST_F(RenderTextTest, MoveLeftRightByWordInBidiText) {
scoped_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) {
scoped_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) {
scoped_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());
}
TEST_F(RenderTextTest, MoveLeftRightByWordInChineseText) {
scoped_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
// TODO(ckocagil): Remove when RenderTextWin goes away.
#if defined(OS_WIN)
TEST_F(RenderTextTest, Win_LogicalClusters) {
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
const base::string16 test_string =
WideToUTF16(L"\x0930\x0930\x0930\x0930\x0930");
render_text->SetText(test_string);
render_text->EnsureLayout();
ASSERT_EQ(1U, render_text->runs_.size());
WORD* logical_clusters = render_text->runs_[0]->logical_clusters.get();
for (size_t i = 0; i < test_string.length(); ++i)
EXPECT_EQ(i, logical_clusters[i]);
}
#endif // defined(OS_WIN)
TEST_F(RenderTextTest, StringSizeSanity) {
scoped_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) {
scoped_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");
scoped_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::StringToLowerASCII(arial_font.GetActualFontNameForTesting()));
Font symbol_font("Symbol", 16);
ASSERT_EQ("symbol",
base::StringToLowerASCII(
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.
scoped_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, SetFontList) {
scoped_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());
}
TEST_F(RenderTextTest, StringSizeBoldWidth) {
scoped_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->SetStyle(BOLD, true);
const int bold_width = render_text->GetStringSize().width();
EXPECT_GT(bold_width, plain_width);
// Now, apply a plain style over the first word only.
render_text->ApplyStyle(BOLD, false, 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_UNSAFE(cases); i++) {
scoped_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) {
scoped_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) {
scoped_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);
scoped_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);
scoped_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) {
scoped_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_UNSAFE(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_UNSAFE(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") },
};
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(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_UNSAFE(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) {
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
render_text->SetText(ASCIIToUTF16("abcdefg"));
EXPECT_GE(render_text->GetUpdatedCursorBounds().width(), 1);
}
TEST_F(RenderTextTest, SelectWord) {
scoped_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_UNSAFE(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/";
scoped_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";
scoped_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): Cursor movements tests disabled on Mac because RenderTextMac
// does not implement this yet. http://crbug.com/131618
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, DisplayRectShowsCursorLTR) {
ASSERT_FALSE(base::i18n::IsRTL());
ASSERT_FALSE(base::i18n::ICUIsRTL());
scoped_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());
}
TEST_F(RenderTextTest, DisplayRectShowsCursorRTL) {
// Set the application default text direction to RTL.
const bool was_rtl = base::i18n::IsRTL();
SetRTL(true);
scoped_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());
}
#endif // !defined(OS_MACOSX)
// 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" };
scoped_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));
}
}
#if defined(OS_WIN)
// TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline.
// 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 };
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
render_text->SetDisplayRect(Rect(1, 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_GT(render_text->lines_.size(), 1U);
}
}
// TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline.
// 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;
} kTestStrings[] = {
{ L"abc defg hijkl", Range(0, 9), Range(9, 14) },
{ L"qwertyzxcvbn", Range(0, 8), Range(8, 12) },
{ L"\x062A\x0641\x0627\x062D\x05EA\x05E4\x05D5\x05D6\x05D9\x05DD",
Range(4, 10), Range(0, 4) }
};
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
render_text->SetDisplayRect(Rect(50, 1000));
render_text->SetMultiline(true);
Canvas canvas;
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text->SetText(WideToUTF16(kTestStrings[i].text));
render_text->Draw(&canvas);
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);
}
}
// TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline.
// 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" };
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
render_text->SetDisplayRect(Rect(30, 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());
}
}
// TODO(ckocagil): Enable for RenderTextHarfBuzz after implementing multiline.
TEST_F(RenderTextTest, Multiline_Newline) {
const struct {
const wchar_t* const text;
// Ranges of the characters on each line preceding the newline.
const Range first_line_char_range;
const Range second_line_char_range;
} kTestStrings[] = {
{ L"abc\ndef", Range(0, 3), Range(4, 7) },
{ L"a \n b ", Range(0, 2), Range(3, 6) },
{ L"\n" , Range::InvalidRange(), Range::InvalidRange() }
};
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
render_text->SetDisplayRect(Rect(200, 1000));
render_text->SetMultiline(true);
Canvas canvas;
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kTestStrings); ++i) {
SCOPED_TRACE(base::StringPrintf("kTestStrings[%" PRIuS "]", i));
render_text->SetText(WideToUTF16(kTestStrings[i].text));
render_text->Draw(&canvas);
ASSERT_EQ(2U, render_text->lines_.size());
const Range first_expected_range = kTestStrings[i].first_line_char_range;
ASSERT_EQ(first_expected_range.IsValid() ? 2U : 1U,
render_text->lines_[0].segments.size());
if (first_expected_range.IsValid())
EXPECT_EQ(first_expected_range,
render_text->lines_[0].segments[0].char_range);
const internal::LineSegment& newline_segment =
render_text->lines_[0].segments[first_expected_range.IsValid() ? 1 : 0];
ASSERT_EQ(1U, newline_segment.char_range.length());
EXPECT_EQ(L'\n', kTestStrings[i].text[newline_segment.char_range.start()]);
const Range second_expected_range = kTestStrings[i].second_line_char_range;
ASSERT_EQ(second_expected_range.IsValid() ? 1U : 0U,
render_text->lines_[1].segments.size());
if (second_expected_range.IsValid())
EXPECT_EQ(second_expected_range,
render_text->lines_[1].segments[0].char_range);
}
}
// TODO(ckocagil): Remove when RenderTextWin goes away.
TEST_F(RenderTextTest, BreakRunsByUnicodeBlocks) {
scoped_ptr<RenderTextWin> render_text(
static_cast<RenderTextWin*>(RenderText::CreateNativeInstance()));
// The '\x25B6' "play character" should break runs. http://crbug.com/278913
render_text->SetText(WideToUTF16(L"x\x25B6y"));
render_text->EnsureLayout();
ASSERT_EQ(3U, render_text->runs_.size());
EXPECT_EQ(Range(0, 1), render_text->runs_[0]->range);
EXPECT_EQ(Range(1, 2), render_text->runs_[1]->range);
EXPECT_EQ(Range(2, 3), render_text->runs_[2]->range);
render_text->SetText(WideToUTF16(L"x \x25B6 y"));
render_text->EnsureLayout();
ASSERT_EQ(3U, render_text->runs_.size());
EXPECT_EQ(Range(0, 2), render_text->runs_[0]->range);
EXPECT_EQ(Range(2, 3), render_text->runs_[1]->range);
EXPECT_EQ(Range(3, 5), render_text->runs_[2]->range);
}
#endif // defined(OS_WIN)
// Test TextRunHarfBuzz's cluster finding logic.
TEST_F(RenderTextTest, HarfBuzz_Clusters) {
struct {
uint32 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;
run.range = Range(0, 4);
run.glyph_count = 4;
run.glyph_to_char.resize(4);
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(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();
ASSERT_EQ(1U, render_text.runs_.size());
internal::TextRunHarfBuzz* run = render_text.runs_[0];
base::i18n::BreakIterator* iter = render_text.grapheme_iterator_.get();
Range first_grapheme_bounds = run->GetGraphemeBounds(iter, 0);
EXPECT_EQ(first_grapheme_bounds, run->GetGraphemeBounds(iter, 1));
Range 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 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;
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");
scoped_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_UNSAFE(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));
}
}
}
TEST_F(RenderTextTest, HarfBuzz_RunDirection) {
RenderTextHarfBuzz render_text;
const base::string16 mixed =
WideToUTF16(L"\x05D0\x05D1" L"1234" L"\x05D2\x05D3");
render_text.SetText(mixed);
render_text.EnsureLayout();
ASSERT_EQ(3U, render_text.runs_.size());
EXPECT_TRUE(render_text.runs_[0]->is_rtl);
EXPECT_FALSE(render_text.runs_[1]->is_rtl);
EXPECT_TRUE(render_text.runs_[2]->is_rtl);
}
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();
ASSERT_EQ(3U, render_text.runs_.size());
EXPECT_EQ(Range(0, 1), render_text.runs_[0]->range);
EXPECT_EQ(Range(1, 2), render_text.runs_[1]->range);
EXPECT_EQ(Range(2, 3), render_text.runs_[2]->range);
render_text.SetText(WideToUTF16(L"x \x25B6 y"));
render_text.EnsureLayout();
ASSERT_EQ(3U, render_text.runs_.size());
EXPECT_EQ(Range(0, 2), render_text.runs_[0]->range);
EXPECT_EQ(Range(2, 3), render_text.runs_[1]->range);
EXPECT_EQ(Range(3, 5), render_text.runs_[2]->range);
}
// Disabled on Mac because RenderTextMac doesn't implement GetGlyphBounds.
#if !defined(OS_MACOSX)
TEST_F(RenderTextTest, GlyphBounds) {
const wchar_t* kTestStrings[] = {
L"asdf 1234 qwer", L"\x0647\x0654", L"\x0645\x0631\x062D\x0628\x0627"
};
scoped_ptr<RenderText> render_text(RenderText::CreateInstance());
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());
}
}
#endif
// Remove this after making RTHB default in favor of RenderTextTest.GlyphBounds.
TEST_F(RenderTextTest, HarfBuzz_GlyphBounds) {
const wchar_t* kTestStrings[] = {
L"asdf 1234 qwer", L"\x0647\x0654", L"\x0645\x0631\x062D\x0628\x0627"
};
scoped_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();
ASSERT_EQ(1U, render_text.runs_.size());
internal::TextRunHarfBuzz* run = render_text.runs_[0];
render_text.ShapeRunWithFont(run, "TheFontThatDoesntExist");
}
// Ensure an empty run returns sane values to queries.
TEST_F(RenderTextTest, HarfBuzz_EmptyRun) {
internal::TextRunHarfBuzz run;
const base::string16 kString = ASCIIToUTF16("abcdefgh");
scoped_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));
Range chars;
Range glyphs;
run.GetClusterAt(4, &chars, &glyphs);
EXPECT_EQ(Range(3, 8), chars);
EXPECT_EQ(Range(0, 0), glyphs);
}
} // namespace gfx