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      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/tabs/side_tab.h"
      6 
      7 #include "base/utf_string_conversions.h"
      8 #include "grit/app_resources.h"
      9 #include "grit/theme_resources.h"
     10 #include "ui/base/resource/resource_bundle.h"
     11 #include "ui/gfx/canvas_skia.h"
     12 #include "ui/gfx/favicon_size.h"
     13 #include "ui/gfx/path.h"
     14 #include "ui/gfx/skia_util.h"
     15 #include "views/controls/button/image_button.h"
     16 
     17 namespace {
     18 const int kVerticalTabHeight = 27;
     19 const int kTitleCloseSpacing = 4;
     20 const SkScalar kRoundRectRadius = 4;
     21 const SkColor kTabBackgroundColor = SK_ColorWHITE;
     22 const SkColor kTextColor = SK_ColorBLACK;
     23 
     24 // Padding between the edge and the icon.
     25 const int kIconLeftPadding = 5;
     26 
     27 // Location the title starts at.
     28 const int kTitleX = kIconLeftPadding + kFaviconSize + 5;
     29 };
     30 
     31 ////////////////////////////////////////////////////////////////////////////////
     32 // SideTab, public:
     33 
     34 SideTab::SideTab(TabController* controller)
     35     : BaseTab(controller) {
     36   ResourceBundle& rb = ResourceBundle::GetSharedInstance();
     37   close_button()->SetBackground(kTextColor,
     38                                 rb.GetBitmapNamed(IDR_TAB_CLOSE),
     39                                 rb.GetBitmapNamed(IDR_TAB_CLOSE_MASK));
     40 }
     41 
     42 SideTab::~SideTab() {
     43 }
     44 
     45 // static
     46 int SideTab::GetPreferredHeight() {
     47   return 27;
     48 }
     49 
     50 ////////////////////////////////////////////////////////////////////////////////
     51 // SideTab, views::View overrides:
     52 
     53 void SideTab::Layout() {
     54   if (ShouldShowIcon()) {
     55     int icon_y = (height() - kFaviconSize) / 2;
     56     icon_bounds_.SetRect(kIconLeftPadding, icon_y, kFaviconSize, kFaviconSize);
     57   } else {
     58     icon_bounds_ = gfx::Rect();
     59   }
     60 
     61   gfx::Size ps = close_button()->GetPreferredSize();
     62   int close_y = (height() - ps.height()) / 2;
     63   close_button()->SetBounds(
     64       std::max(0, width() - ps.width() -
     65                (GetPreferredHeight() - ps.height()) / 2),
     66       close_y,
     67       ps.width(),
     68       ps.height());
     69 
     70   int title_y = (height() - font_height()) / 2;
     71   title_bounds_.SetRect(
     72       kTitleX,
     73       title_y,
     74       std::max(0, close_button()->x() - kTitleCloseSpacing - kTitleX),
     75       font_height());
     76 }
     77 
     78 void SideTab::OnPaint(gfx::Canvas* canvas) {
     79   // TODO: should render the active tab differently.
     80   if (ShouldPaintHighlight()) {
     81     SkPaint paint;
     82     paint.setColor(kTabBackgroundColor);
     83     paint.setAntiAlias(true);
     84     SkRect border_rect = { SkIntToScalar(0), SkIntToScalar(0),
     85                            SkIntToScalar(width()), SkIntToScalar(height()) };
     86     canvas->AsCanvasSkia()->drawRoundRect(border_rect,
     87                                           SkIntToScalar(kRoundRectRadius),
     88                                           SkIntToScalar(kRoundRectRadius),
     89                                           paint);
     90   }
     91 
     92   if (ShouldShowIcon())
     93     PaintIcon(canvas);
     94 
     95   PaintTitle(canvas, kTextColor);
     96 }
     97 
     98 gfx::Size SideTab::GetPreferredSize() {
     99   return gfx::Size(0, GetPreferredHeight());
    100 }
    101 
    102 const gfx::Rect& SideTab::GetTitleBounds() const {
    103   return title_bounds_;
    104 }
    105 
    106 const gfx::Rect& SideTab::GetIconBounds() const {
    107   return icon_bounds_;
    108 }
    109 
    110 bool SideTab::ShouldPaintHighlight() const {
    111   return IsSelected() || !controller();
    112 }
    113 
    114 bool SideTab::ShouldShowIcon() const {
    115   return data().mini || data().show_icon;
    116 }
    117