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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"
#if defined(OS_WIN)
#include <windows.h>
#include <shellapi.h>
#endif
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/app/chrome_command_ids.h"
#include "chrome/browser/ui/views/tab_icon_view_model.h"
#include "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/resources/grit/ui_resources.h"
#if defined(OS_WIN)
#include "chrome/browser/app_icon_win.h"
#include "ui/gfx/icon_util.h"
#endif
static bool g_initialized = false;
static gfx::ImageSkia* g_default_favicon = NULL;
// 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();
scoped_ptr<SkBitmap> bitmap(
IconUtil::CreateSkBitmapFromHICON(app_icon, gfx::Size(16, 16)));
g_default_favicon = new gfx::ImageSkia(gfx::ImageSkiaRep(*bitmap, 1.0f));
DestroyIcon(app_icon);
#else
ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
g_default_favicon = rb.GetImageSkiaNamed(IDR_PRODUCT_LOGO_16);
#endif
}
}
TabIconView::TabIconView(chrome::TabIconViewModel* model,
views::MenuButtonListener* listener)
: views::MenuButton(NULL, base::string16(), listener, false),
model_(model),
throbber_running_(false),
is_light_(false),
throbber_frame_(0) {
InitializeIfNeeded();
}
TabIconView::~TabIconView() {
}
void TabIconView::Update() {
static bool initialized = false;
static int throbber_frame_count = 0;
if (!initialized) {
initialized = true;
gfx::ImageSkia throbber(*ui::ResourceBundle::GetSharedInstance().
GetImageSkiaNamed(IDR_THROBBER));
throbber_frame_count = throbber.width() / throbber.height();
}
if (throbber_running_) {
// We think the tab is loading.
if (!model_->ShouldTabIconViewAnimate()) {
// Woops, tab is invalid or not loading, reset our status and schedule
// a paint.
throbber_running_ = false;
SchedulePaint();
} else {
// The tab is still loading, increment the frame.
throbber_frame_ = (throbber_frame_ + 1) % throbber_frame_count;
SchedulePaint();
}
} else if (model_->ShouldTabIconViewAnimate()) {
// We didn't think we were loading, but the tab is loading. Reset the
// frame and status and schedule a paint.
throbber_running_ = true;
throbber_frame_ = 0;
SchedulePaint();
}
}
void TabIconView::PaintThrobber(gfx::Canvas* canvas) {
gfx::ImageSkia throbber(*GetThemeProvider()->GetImageSkiaNamed(
is_light_ ? IDR_THROBBER_LIGHT : IDR_THROBBER));
int image_size = throbber.height();
PaintIcon(canvas, throbber, throbber_frame_ * image_size, 0, image_size,
image_size, false);
}
void TabIconView::PaintFavicon(gfx::Canvas* canvas,
const gfx::ImageSkia& image) {
PaintIcon(canvas, image, 0, 0, image.width(), image.height(), true);
}
void TabIconView::PaintIcon(gfx::Canvas* canvas,
const gfx::ImageSkia& image,
int src_x,
int src_y,
int src_w,
int src_h,
bool filter) {
// 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>(src_w);
float float_src_h = static_cast<float>(src_h);
float scalable_w, scalable_h;
if (src_w <= gfx::kFaviconSize && src_h <= 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, src_x, src_y, src_w, src_h,
(width() - dest_w) / 2, (height() - dest_h) / 2, dest_w,
dest_h, filter);
}
void TabIconView::OnPaint(gfx::Canvas* canvas) {
bool rendered = false;
if (throbber_running_) {
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);
}
gfx::Size TabIconView::GetPreferredSize() const {
return gfx::Size(gfx::kFaviconSize, gfx::kFaviconSize);
}
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