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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/theme/web_theme_engine_helper.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
#if BUILDFLAG(IS_ANDROID)
#include "third_party/blink/renderer/platform/theme/web_theme_engine_android.h"
#elif BUILDFLAG(IS_MAC)
#include "third_party/blink/renderer/platform/theme/web_theme_engine_mac.h"
#else
#include "third_party/blink/renderer/platform/theme/web_theme_engine_default.h"
#endif
namespace blink {
namespace {
std::unique_ptr<WebThemeEngine> CreateWebThemeEngine() {
#if BUILDFLAG(IS_ANDROID)
return std::make_unique<WebThemeEngineAndroid>();
#elif BUILDFLAG(IS_MAC)
return std::make_unique<WebThemeEngineMac>();
#else
return std::make_unique<WebThemeEngineDefault>();
#endif
}
std::unique_ptr<WebThemeEngine>& ThemeEngine() {
DEFINE_STATIC_LOCAL(std::unique_ptr<WebThemeEngine>, theme_engine,
{CreateWebThemeEngine()});
return theme_engine;
}
} // namespace
WebThemeEngine* WebThemeEngineHelper::GetNativeThemeEngine() {
return ThemeEngine().get();
}
std::unique_ptr<WebThemeEngine>
WebThemeEngineHelper::SwapNativeThemeEngineForTesting(
std::unique_ptr<WebThemeEngine> new_theme) {
ThemeEngine().swap(new_theme);
return new_theme;
}
void WebThemeEngineHelper::DidUpdateRendererPreferences(
const blink::RendererPreferences& renderer_prefs) {
#if BUILDFLAG(IS_WIN)
// Update Theme preferences on Windows.
WebThemeEngineDefault::cacheScrollBarMetrics(
renderer_prefs.vertical_scroll_bar_width_in_dips,
renderer_prefs.horizontal_scroll_bar_height_in_dips,
renderer_prefs.arrow_bitmap_height_vertical_scroll_bar_in_dips,
renderer_prefs.arrow_bitmap_width_horizontal_scroll_bar_in_dips);
#endif
}
const WebThemeEngine::ScrollbarStyle&
WebThemeEngineHelper::AndroidScrollbarStyle() {
DEFINE_STATIC_LOCAL(WebThemeEngine::ScrollbarStyle, style,
({/*thumb_thickness=*/4,
/*scrollbar_margin=*/0,
/*color=*/{0.5f, 0.5f, 0.5f, 0.5f}}));
return style;
}
} // namespace blink
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