1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "chrome/browser/ui/views/tab_icon_view.h"
6
7 #if defined(OS_WIN)
8 #include <windows.h>
9 #include <shellapi.h>
10 #endif
11
12 #include "base/file_util.h"
13 #include "base/logging.h"
14 #include "chrome/app/chrome_command_ids.h"
15 #include "grit/app_resources.h"
16 #include "grit/theme_resources.h"
17 #include "ui/base/resource/resource_bundle.h"
18 #include "ui/base/theme_provider.h"
19 #include "ui/gfx/canvas.h"
20 #include "ui/gfx/favicon_size.h"
21
22 #if defined(OS_WIN)
23 #include "chrome/browser/app_icon_win.h"
24 #include "ui/gfx/icon_util.h"
25 #endif
26
27 static bool g_initialized = false;
28 static SkBitmap* g_default_favicon = NULL;
29
30 // static
InitializeIfNeeded()31 void TabIconView::InitializeIfNeeded() {
32 if (!g_initialized) {
33 g_initialized = true;
34
35 #if defined(OS_WIN)
36 // The default window icon is the application icon, not the default
37 // favicon.
38 HICON app_icon = GetAppIcon();
39 g_default_favicon =
40 IconUtil::CreateSkBitmapFromHICON(app_icon, gfx::Size(16, 16));
41 DestroyIcon(app_icon);
42 #else
43 g_default_favicon =
44 ResourceBundle::GetSharedInstance().GetBitmapNamed(IDR_PRODUCT_LOGO_16);
45 #endif
46 }
47 }
48
TabIconView(TabIconViewModel * model)49 TabIconView::TabIconView(TabIconViewModel* model)
50 : model_(model),
51 throbber_running_(false),
52 is_light_(false),
53 throbber_frame_(0) {
54 InitializeIfNeeded();
55 }
56
~TabIconView()57 TabIconView::~TabIconView() {
58 }
59
Update()60 void TabIconView::Update() {
61 static bool initialized = false;
62 static int throbber_frame_count = 0;
63 if (!initialized) {
64 initialized = true;
65 SkBitmap throbber(
66 *ResourceBundle::GetSharedInstance().GetBitmapNamed(IDR_THROBBER));
67 throbber_frame_count = throbber.width() / throbber.height();
68 }
69
70 if (throbber_running_) {
71 // We think the tab is loading.
72 if (!model_->ShouldTabIconViewAnimate()) {
73 // Woops, tab is invalid or not loading, reset our status and schedule
74 // a paint.
75 throbber_running_ = false;
76 SchedulePaint();
77 } else {
78 // The tab is still loading, increment the frame.
79 throbber_frame_ = (throbber_frame_ + 1) % throbber_frame_count;
80 SchedulePaint();
81 }
82 } else if (model_->ShouldTabIconViewAnimate()) {
83 // We didn't think we were loading, but the tab is loading. Reset the
84 // frame and status and schedule a paint.
85 throbber_running_ = true;
86 throbber_frame_ = 0;
87 SchedulePaint();
88 }
89 }
90
PaintThrobber(gfx::Canvas * canvas)91 void TabIconView::PaintThrobber(gfx::Canvas* canvas) {
92 SkBitmap throbber(*GetThemeProvider()->GetBitmapNamed(
93 is_light_ ? IDR_THROBBER_LIGHT : IDR_THROBBER));
94 int image_size = throbber.height();
95 PaintIcon(canvas, throbber, throbber_frame_ * image_size, 0, image_size,
96 image_size, false);
97 }
98
PaintFavicon(gfx::Canvas * canvas,const SkBitmap & bitmap)99 void TabIconView::PaintFavicon(gfx::Canvas* canvas, const SkBitmap& bitmap) {
100 PaintIcon(canvas, bitmap, 0, 0, bitmap.width(), bitmap.height(), true);
101 }
102
PaintIcon(gfx::Canvas * canvas,const SkBitmap & bitmap,int src_x,int src_y,int src_w,int src_h,bool filter)103 void TabIconView::PaintIcon(gfx::Canvas* canvas,
104 const SkBitmap& bitmap,
105 int src_x,
106 int src_y,
107 int src_w,
108 int src_h,
109 bool filter) {
110 // For source images smaller than the favicon square, scale them as if they
111 // were padded to fit the favicon square, so we don't blow up tiny favicons
112 // into larger or nonproportional results.
113 float float_src_w = static_cast<float>(src_w);
114 float float_src_h = static_cast<float>(src_h);
115 float scalable_w, scalable_h;
116 if (src_w <= kFaviconSize && src_h <= kFaviconSize) {
117 scalable_w = scalable_h = kFaviconSize;
118 } else {
119 scalable_w = float_src_w;
120 scalable_h = float_src_h;
121 }
122
123 // Scale proportionately.
124 float scale = std::min(static_cast<float>(width()) / scalable_w,
125 static_cast<float>(height()) / scalable_h);
126 int dest_w = static_cast<int>(float_src_w * scale);
127 int dest_h = static_cast<int>(float_src_h * scale);
128
129 // Center the scaled image.
130 canvas->DrawBitmapInt(bitmap, src_x, src_y, src_w, src_h,
131 (width() - dest_w) / 2, (height() - dest_h) / 2, dest_w,
132 dest_h, filter);
133 }
134
OnPaint(gfx::Canvas * canvas)135 void TabIconView::OnPaint(gfx::Canvas* canvas) {
136 bool rendered = false;
137
138 if (throbber_running_) {
139 rendered = true;
140 PaintThrobber(canvas);
141 } else {
142 SkBitmap favicon = model_->GetFaviconForTabIconView();
143 if (!favicon.isNull()) {
144 rendered = true;
145 PaintFavicon(canvas, favicon);
146 }
147 }
148
149 if (!rendered)
150 PaintFavicon(canvas, *g_default_favicon);
151 }
152
GetPreferredSize()153 gfx::Size TabIconView::GetPreferredSize() {
154 return gfx::Size(kFaviconSize, kFaviconSize);
155 }
156