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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 "chrome/browser/ui/views/tab_icon_view.h"
#include <memory>
#if defined(OS_WIN)
#include <windows.h>
#include <shellapi.h>
#endif
#include "base/logging.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/resource/resource_bundle.h"
#include "ui/base/theme_provider.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/favicon_size.h"
#include "ui/gfx/paint_throbber.h"
#include "ui/native_theme/native_theme.h"
#if defined(OS_WIN)
#include "chrome/browser/win/app_icon.h"
#include "ui/gfx/icon_util.h"
#endif
namespace {
bool g_initialized = false;
gfx::ImageSkia* g_default_favicon = nullptr;
} // namespace
// static
void TabIconView::InitializeIfNeeded() {
if (!g_initialized) {
g_initialized = true;
#if defined(OS_WIN)
// The default window icon is the application icon, not the default
// favicon.
HICON app_icon = GetAppIcon();
g_default_favicon = new gfx::ImageSkia(gfx::ImageSkiaRep(
IconUtil::CreateSkBitmapFromHICON(app_icon, gfx::Size(16, 16)), 1.0f));
DestroyIcon(app_icon);
#else
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
g_default_favicon = rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_16);
#endif
}
}
TabIconView::TabIconView(TabIconViewModel* model,
views::MenuButtonListener* listener)
: views::MenuButton(base::string16(), listener, false),
model_(model),
is_light_(false) {
InitializeIfNeeded();
// Inheriting from Button causes this View to be focusable, but it us
// purely decorative and should not be exposed as focusable in accessibility.
SetFocusBehavior(FocusBehavior::NEVER);
}
TabIconView::~TabIconView() {
}
void TabIconView::Update() {
if (!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(),
GetNativeTheme()->GetSystemColor(
is_light_ ? ui::NativeTheme::kColorId_ThrobberLightColor
: ui::NativeTheme::kColorId_ThrobberSpinningColor),
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 {
return gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize);
}
const char* TabIconView::GetClassName() const {
return "TabIconView";
}
void TabIconView::PaintButtonContents(gfx::Canvas* canvas) {
bool rendered = false;
if (model_->ShouldTabIconViewAnimate()) {
rendered = true;
PaintThrobber(canvas);
} else {
gfx::ImageSkia favicon = model_->GetFaviconForTabIconView();
if (!favicon.isNull()) {
rendered = true;
PaintFavicon(canvas, favicon);
}
}
if (!rendered)
PaintFavicon(canvas, *g_default_favicon);
}
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