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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/tab_strip/tab_strip_ui_layout.h"
#include "base/strings/string_number_conversions.h"
#include "ui/gfx/geometry/size.h"
namespace {
// The height of the thumbnail.
constexpr int kThumbnailHeight = 120;
// The padding of the tab item to the top/bottom of the tab strip.
constexpr int kPaddingAroundTabList = 16;
// The height of the tab title.
constexpr int kTabTitleHeight = 40;
} // namespace
// static
TabStripUILayout TabStripUILayout::CalculateForWebViewportSize(
const gfx::Size& viewport_size) {
TabStripUILayout layout;
layout.viewport_width = viewport_size.width();
if (viewport_size.IsEmpty()) {
layout.tab_thumbnail_size = gfx::Size(kThumbnailHeight, kThumbnailHeight);
return layout;
}
// Size the thumbnail to match the web viewport's aspect ratio.
// Limit aspect ratio to minimum of 1 to prevent thumbnails getting too
// narrow.
double ratio =
std::max(1.0, 1.0 * viewport_size.width() / viewport_size.height());
layout.tab_thumbnail_size.set_height(kThumbnailHeight);
layout.tab_thumbnail_size.set_width(kThumbnailHeight * ratio);
layout.tab_thumbnail_aspect_ratio = ratio;
return layout;
}
// static
int TabStripUILayout::GetContainerHeight() {
return 2 * kPaddingAroundTabList + kTabTitleHeight + kThumbnailHeight;
}
base::flat_map<std::string, std::string> TabStripUILayout::AsDictionary()
const {
return base::flat_map<std::string, std::string>(
{{"--tabstrip-tab-list-vertical-padding",
base::NumberToString(kPaddingAroundTabList) + "px"},
{"--tabstrip-tab-title-height",
base::NumberToString(kTabTitleHeight) + "px"},
{"--tabstrip-tab-thumbnail-width",
base::NumberToString(tab_thumbnail_size.width()) + "px"},
{"--tabstrip-tab-thumbnail-height",
base::NumberToString(tab_thumbnail_size.height()) + "px"},
{"--tabstrip-tab-thumbnail-aspect-ratio",
base::NumberToString(tab_thumbnail_aspect_ratio)},
{"--tabstrip-viewport-width",
base::NumberToString(viewport_width) + "px"}});
}
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