sad_tab_view.cc revision ddb351dbec246cf1fab5ec20d2d5520909041de1 
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/sad_tab_view.h"
6
7#include "base/utf_string_conversions.h"
8#include "chrome/browser/google/google_util.h"
9#include "chrome/common/url_constants.h"
10#include "content/browser/tab_contents/tab_contents.h"
11#include "content/browser/tab_contents/tab_contents_delegate.h"
12#include "grit/generated_resources.h"
13#include "grit/locale_settings.h"
14#include "grit/theme_resources.h"
15#include "third_party/skia/include/effects/SkGradientShader.h"
16#include "ui/base/l10n/l10n_util.h"
17#include "ui/base/resource/resource_bundle.h"
18#include "ui/gfx/canvas.h"
19#include "ui/gfx/canvas_skia.h"
20#include "ui/gfx/size.h"
21#include "ui/gfx/skia_util.h"
22
23static const int kSadTabOffset = -64;
24static const int kIconTitleSpacing = 20;
25static const int kTitleMessageSpacing = 15;
26static const int kMessageBottomMargin = 20;
27static const float kMessageSize = 0.65f;
28static const SkColor kTitleColor = SK_ColorWHITE;
29static const SkColor kMessageColor = SK_ColorWHITE;
30static const SkColor kLinkColor = SK_ColorWHITE;
31static const SkColor kCrashBackgroundColor = SkColorSetRGB(35, 48, 64);
32static const SkColor kCrashBackgroundEndColor = SkColorSetRGB(35, 48, 64);
33// TODO(gspencer): update these colors when the UI team has picked
34// official versions.  See http://crosbug.com/10711.
35static const SkColor kKillBackgroundColor = SkColorSetRGB(57, 48, 88);
36static const SkColor kKillBackgroundEndColor = SkColorSetRGB(57, 48, 88);
37
38// Font size correction.
39#if defined(CROS_FONTS_USING_BCI)
40static const int kTitleFontSizeDelta = 1;
41static const int kMessageFontSizeDelta = 0;
42#else
43static const int kTitleFontSizeDelta = 2;
44static const int kMessageFontSizeDelta = 1;
45#endif
46
47// static
48SkBitmap* SadTabView::sad_tab_bitmap_ = NULL;
49gfx::Font* SadTabView::title_font_ = NULL;
50gfx::Font* SadTabView::message_font_ = NULL;
51std::wstring SadTabView::title_;
52std::wstring SadTabView::message_;
53int SadTabView::title_width_;
54
55SadTabView::SadTabView(TabContents* tab_contents, Kind kind)
56    : tab_contents_(tab_contents),
57      learn_more_link_(NULL),
58      kind_(kind) {
59  DCHECK(tab_contents);
60
61  InitClass(kind);
62
63  if (tab_contents != NULL) {
64    learn_more_link_ =
65        new views::Link(UTF16ToWide(l10n_util::GetStringUTF16(IDS_LEARN_MORE)));
66    learn_more_link_->SetFont(*message_font_);
67    learn_more_link_->SetNormalColor(kLinkColor);
68    learn_more_link_->SetController(this);
69    AddChildView(learn_more_link_);
70  }
71}
72
73SadTabView::~SadTabView() {}
74
75void SadTabView::OnPaint(gfx::Canvas* canvas) {
76  SkPaint paint;
77  SkSafeUnref(paint.setShader(
78      gfx::CreateGradientShader(
79          0,
80          height(),
81          kind_ == CRASHED ? kCrashBackgroundColor : kKillBackgroundColor,
82          kind_ == CRASHED ?
83            kCrashBackgroundEndColor : kKillBackgroundEndColor)));
84  paint.setStyle(SkPaint::kFill_Style);
85  canvas->AsCanvasSkia()->drawRectCoords(
86      0, 0, SkIntToScalar(width()), SkIntToScalar(height()), paint);
87
88  canvas->DrawBitmapInt(*sad_tab_bitmap_, icon_bounds_.x(), icon_bounds_.y());
89
90  canvas->DrawStringInt(WideToUTF16Hack(title_), *title_font_, kTitleColor,
91                        title_bounds_.x(), title_bounds_.y(),
92                        title_bounds_.width(), title_bounds_.height(),
93                        gfx::Canvas::TEXT_ALIGN_CENTER);
94
95  canvas->DrawStringInt(WideToUTF16Hack(message_), *message_font_,
96                        kMessageColor, message_bounds_.x(), message_bounds_.y(),
97                        message_bounds_.width(), message_bounds_.height(),
98                        gfx::Canvas::MULTI_LINE);
99
100  if (learn_more_link_ != NULL)
101    learn_more_link_->SetBounds(link_bounds_.x(), link_bounds_.y(),
102                                link_bounds_.width(), link_bounds_.height());
103}
104
105void SadTabView::Layout() {
106  int icon_width = sad_tab_bitmap_->width();
107  int icon_height = sad_tab_bitmap_->height();
108  int icon_x = (width() - icon_width) / 2;
109  int icon_y = ((height() - icon_height) / 2) + kSadTabOffset;
110  icon_bounds_.SetRect(icon_x, icon_y, icon_width, icon_height);
111
112  int title_x = (width() - title_width_) / 2;
113  int title_y = icon_bounds_.bottom() + kIconTitleSpacing;
114  int title_height = title_font_->GetHeight();
115  title_bounds_.SetRect(title_x, title_y, title_width_, title_height);
116
117  gfx::CanvasSkia cc(0, 0, true);
118  int message_width = static_cast<int>(width() * kMessageSize);
119  int message_height = 0;
120  cc.SizeStringInt(WideToUTF16Hack(message_), *message_font_, &message_width,
121                   &message_height, gfx::Canvas::MULTI_LINE);
122  int message_x = (width() - message_width) / 2;
123  int message_y = title_bounds_.bottom() + kTitleMessageSpacing;
124  message_bounds_.SetRect(message_x, message_y, message_width, message_height);
125
126  if (learn_more_link_ != NULL) {
127    gfx::Size sz = learn_more_link_->GetPreferredSize();
128    gfx::Insets insets = learn_more_link_->GetInsets();
129    link_bounds_.SetRect((width() - sz.width()) / 2,
130                         message_bounds_.bottom() + kTitleMessageSpacing -
131                         insets.top(), sz.width(), sz.height());
132  }
133}
134
135void SadTabView::LinkActivated(views::Link* source, int event_flags) {
136  if (tab_contents_ != NULL && source == learn_more_link_) {
137    GURL help_url =
138        google_util::AppendGoogleLocaleParam(GURL(kind_ == CRASHED ?
139                                                  chrome::kCrashReasonURL :
140                                                  chrome::kKillReasonURL));
141    tab_contents_->OpenURL(help_url, GURL(), CURRENT_TAB, PageTransition::LINK);
142  }
143}
144
145// static
146void SadTabView::InitClass(Kind kind) {
147  static bool initialized = false;
148  if (!initialized) {
149    ResourceBundle& rb = ResourceBundle::GetSharedInstance();
150    title_font_ = new gfx::Font(
151        rb.GetFont(ResourceBundle::BaseFont).DeriveFont(kTitleFontSizeDelta,
152                                                        gfx::Font::BOLD));
153    message_font_ = new gfx::Font(
154        rb.GetFont(ResourceBundle::BaseFont).DeriveFont(kMessageFontSizeDelta));
155    sad_tab_bitmap_ = rb.GetBitmapNamed(
156        kind == CRASHED ? IDR_SAD_TAB : IDR_KILLED_TAB);
157
158    title_ = UTF16ToWide(l10n_util::GetStringUTF16(
159        kind == CRASHED ? IDS_SAD_TAB_TITLE : IDS_KILLED_TAB_TITLE));
160    title_width_ = title_font_->GetStringWidth(WideToUTF16Hack(title_));
161    message_ = UTF16ToWide(l10n_util::GetStringUTF16(
162        kind == CRASHED ? IDS_SAD_TAB_MESSAGE : IDS_KILLED_TAB_MESSAGE));
163
164    initialized = true;
165  }
166}
167