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// Copyright 2012 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/views/tab_icon_view.h"
#include <memory>
#include "base/logging.h"
#include "base/no_destructor.h"
#include "build/build_config.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/ui/views/tab_icon_view_model.h"
#include "chrome/grit/theme_resources.h"
#include "ui/base/metadata/metadata_impl_macros.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/theme_provider.h"
#include "ui/color/color_id.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/favicon_size.h"
#include "ui/gfx/paint_throbber.h"
#if BUILDFLAG(IS_WIN)
#include <windows.h>
#include <shellapi.h>
#include "base/win/scoped_gdi_object.h"
#include "chrome/browser/win/app_icon.h"
#include "ui/gfx/icon_util.h"
#endif
namespace {
gfx::ImageSkia CreateDefaultFavicon() {
gfx::ImageSkia icon;
#if BUILDFLAG(IS_WIN)
// The default window icon is the application icon, not the default favicon.
base::win::ScopedGDIObject<HICON> app_icon(GetAppIcon());
icon = gfx::ImageSkia::CreateFromBitmap(
IconUtil::CreateSkBitmapFromHICON(app_icon.get(), gfx::Size(16, 16)),
1.0f);
#else
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
icon = *rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_16);
#endif
return icon;
}
class DefaultFavicon {
public:
DefaultFavicon(const DefaultFavicon&) = delete;
DefaultFavicon& operator=(const DefaultFavicon&) = delete;
static const DefaultFavicon& GetInstance() {
static base::NoDestructor<DefaultFavicon> default_favicon;
return *default_favicon;
}
gfx::ImageSkia icon() const { return icon_; }
private:
friend class base::NoDestructor<DefaultFavicon>;
DefaultFavicon() : icon_(CreateDefaultFavicon()) {}
const gfx::ImageSkia icon_;
};
} // namespace
TabIconView::TabIconView() {
// Inheriting from Button causes this View to be focusable, but it is
// purely decorative and should not be exposed as focusable in accessibility.
SetFocusBehavior(FocusBehavior::NEVER);
}
TabIconView::~TabIconView() = default;
void TabIconView::SetModel(TabIconViewModel* model) {
model_ = model;
Update();
}
void TabIconView::Update() {
if (!model_ || !model_->ShouldTabIconViewAnimate()) {
throbber_start_time_ = base::TimeTicks();
}
SchedulePaint();
}
void TabIconView::PaintThrobber(gfx::Canvas* canvas) {
if (throbber_start_time_ == base::TimeTicks()) {
throbber_start_time_ = base::TimeTicks::Now();
}
gfx::PaintThrobberSpinning(canvas, GetLocalBounds(),
GetColorProvider()->GetColor(ui::kColorThrobber),
base::TimeTicks::Now() - throbber_start_time_);
}
void TabIconView::PaintFavicon(gfx::Canvas* canvas,
const gfx::ImageSkia& image) {
// For source images smaller than the favicon square, scale them as if they
// were padded to fit the favicon square, so we don't blow up tiny favicons
// into larger or nonproportional results.
float float_src_w = static_cast<float>(image.width());
float float_src_h = static_cast<float>(image.height());
float scalable_w, scalable_h;
if (image.width() <= gfx::kFaviconSize &&
image.height() <= gfx::kFaviconSize) {
scalable_w = scalable_h = gfx::kFaviconSize;
} else {
scalable_w = float_src_w;
scalable_h = float_src_h;
}
// Scale proportionately.
float scale = std::min(static_cast<float>(width()) / scalable_w,
static_cast<float>(height()) / scalable_h);
int dest_w = static_cast<int>(float_src_w * scale);
int dest_h = static_cast<int>(float_src_h * scale);
// Center the scaled image.
canvas->DrawImageInt(image, 0, 0, image.width(), image.height(),
(width() - dest_w) / 2, (height() - dest_h) / 2, dest_w,
dest_h, true);
}
gfx::Size TabIconView::CalculatePreferredSize(
const views::SizeBounds& available_size) const {
return gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize);
}
void TabIconView::PaintButtonContents(gfx::Canvas* canvas) {
if (model_) {
if (model_->ShouldTabIconViewAnimate()) {
PaintThrobber(canvas);
return;
}
gfx::ImageSkia favicon =
model_->GetFaviconForTabIconView().Rasterize(GetColorProvider());
if (!favicon.isNull()) {
PaintFavicon(canvas, favicon);
return;
}
}
PaintFavicon(canvas, DefaultFavicon::GetInstance().icon());
}
BEGIN_METADATA(TabIconView)
END_METADATA
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