blob: 835dd2716afc503bb13b1f8e8ce6a2917e7904b1 [file] [log] [blame]
// Copyright 2019 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 "pdf/document_layout.h"
#include "base/logging.h"
namespace chrome_pdf {
namespace {
int GetWidestPageWidth(const std::vector<pp::Size>& page_sizes) {
int widest_page_width = 0;
for (const auto& page_size : page_sizes) {
widest_page_width = std::max(widest_page_width, page_size.width());
}
return widest_page_width;
}
pp::Rect InsetRect(pp::Rect rect,
const draw_utils::PageInsetSizes& inset_sizes) {
rect.Inset(inset_sizes.left, inset_sizes.top, inset_sizes.right,
inset_sizes.bottom);
return rect;
}
} // namespace
const draw_utils::PageInsetSizes DocumentLayout::kSingleViewInsets{
/*left=*/5, /*top=*/3, /*right=*/5, /*bottom=*/7};
DocumentLayout::Options::Options() = default;
DocumentLayout::Options::Options(const Options& other) = default;
DocumentLayout::Options& DocumentLayout::Options::operator=(
const Options& other) = default;
DocumentLayout::Options::~Options() = default;
void DocumentLayout::Options::RotatePagesClockwise() {
default_page_orientation_ = RotateClockwise(default_page_orientation_);
}
void DocumentLayout::Options::RotatePagesCounterclockwise() {
default_page_orientation_ = RotateCounterclockwise(default_page_orientation_);
}
DocumentLayout::DocumentLayout() = default;
DocumentLayout::~DocumentLayout() = default;
void DocumentLayout::ComputeSingleViewLayout(
const std::vector<pp::Size>& page_sizes) {
set_size({GetWidestPageWidth(page_sizes), 0});
page_layouts_.resize(page_sizes.size());
for (size_t i = 0; i < page_sizes.size(); ++i) {
if (i != 0) {
// Add space for bottom separator.
size_.Enlarge(0, kBottomSeparator);
}
const pp::Size& page_size = page_sizes[i];
pp::Rect page_rect = draw_utils::GetRectForSingleView(page_size, size_);
page_layouts_[i].outer_rect = page_rect;
page_layouts_[i].inner_rect = InsetRect(page_rect, kSingleViewInsets);
draw_utils::ExpandDocumentSize(page_size, &size_);
}
}
void DocumentLayout::ComputeTwoUpViewLayout(
const std::vector<pp::Size>& page_sizes) {
set_size({GetWidestPageWidth(page_sizes), 0});
page_layouts_.resize(page_sizes.size());
for (size_t i = 0; i < page_sizes.size(); ++i) {
draw_utils::PageInsetSizes page_insets =
draw_utils::GetPageInsetsForTwoUpView(
i, page_sizes.size(), kSingleViewInsets, kHorizontalSeparator);
const pp::Size& page_size = page_sizes[i];
pp::Rect page_rect;
if (i % 2 == 0) {
page_rect = draw_utils::GetLeftRectForTwoUpView(
page_size, {size_.width(), size_.height()});
} else {
page_rect = draw_utils::GetRightRectForTwoUpView(
page_size, {size_.width(), size_.height()});
size_.Enlarge(0,
std::max(page_size.height(), page_sizes[i - 1].height()));
}
page_layouts_[i].outer_rect = page_rect;
page_layouts_[i].inner_rect = InsetRect(page_rect, page_insets);
}
if (page_sizes.size() % 2 == 1) {
size_.Enlarge(0, page_sizes.back().height());
}
size_.set_width(2 * size_.width());
}
} // namespace chrome_pdf