src/ash/system/tray/tray_bar_button_with_title.cc

   1 // Copyright 2013 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 "ash/system/tray/tray_bar_button_with_title.h"
   6
   7 #include "ash/system/tray/tray_constants.h"
   8 #include "base/memory/scoped_ptr.h"
   9 #include "grit/ui_resources.h"
  10 #include "ui/base/resource/resource_bundle.h"
  11 #include "ui/gfx/image/image_skia.h"
  12 #include "ui/views/controls/label.h"
  13 #include "ui/views/painter.h"
  14
  15 namespace ash {
  16 namespace internal {
  17
  18 namespace {
  19
  20 const int kBarImagesActive[] = {
  21     IDR_SLIDER_ACTIVE_LEFT,
  22     IDR_SLIDER_ACTIVE_CENTER,
  23     IDR_SLIDER_ACTIVE_RIGHT,
  24 };
  25
  26 const int kBarImagesDisabled[] = {
  27     IDR_SLIDER_DISABLED_LEFT,
  28     IDR_SLIDER_DISABLED_CENTER,
  29     IDR_SLIDER_DISABLED_RIGHT,
  30 };
  31
  32 }  // namespace
  33
  34 class TrayBarButtonWithTitle::TrayBarButton : public views::View {
  35  public:
  36   TrayBarButton(const int bar_active_images[], const int bar_disabled_images[])
  37     : views::View(),
  38       bar_active_images_(bar_active_images),
  39       bar_disabled_images_(bar_disabled_images),
  40       painter_(new views::HorizontalPainter(bar_active_images_)){
  41   }
  42   virtual ~TrayBarButton() {}
  43
  44   // Overriden from views::View:
  45   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE {
  46     painter_->Paint(canvas, size());
  47   }
  48
  49   void Update(bool control_on) {
  50     painter_.reset(new views::HorizontalPainter(
  51         control_on ? bar_active_images_ : bar_disabled_images_));
  52     SchedulePaint();
  53   }
  54
  55  private:
  56   const int* bar_active_images_;
  57   const int* bar_disabled_images_;
  58   scoped_ptr<views::HorizontalPainter> painter_;
  59
  60   DISALLOW_COPY_AND_ASSIGN(TrayBarButton);
  61 };
  62
  63 TrayBarButtonWithTitle::TrayBarButtonWithTitle(views::ButtonListener* listener,
  64                                                int title_id,
  65                                                int width)
  66     : views::CustomButton(listener),
  67       image_(new TrayBarButton(kBarImagesActive, kBarImagesDisabled)),
  68       title_(NULL),
  69       width_(width) {
  70   AddChildView(image_);
  71   if (title_id != -1) {
  72     title_ = new views::Label;
  73     ui::ResourceBundle& rb = ui::ResourceBundle::GetSharedInstance();
  74     base::string16 text = rb.GetLocalizedString(title_id);
  75     title_->SetText(text);
  76     AddChildView(title_);
  77   }
  78
  79   image_height_ = ui::ResourceBundle::GetSharedInstance().GetImageNamed(
  80       kBarImagesActive[0]).ToImageSkia()->height();
  81 }
  82
  83 TrayBarButtonWithTitle::~TrayBarButtonWithTitle() {}
  84
  85 void TrayBarButtonWithTitle::UpdateButton(bool control_on) {
  86   image_->Update(control_on);
  87 }
  88
  89 gfx::Size TrayBarButtonWithTitle::GetPreferredSize() {
  90   return gfx::Size(width_, kTrayPopupItemHeight);
  91 }
  92
  93 void TrayBarButtonWithTitle::Layout() {
  94   gfx::Rect rect(GetContentsBounds());
  95   int bar_image_y = rect.height() / 2 - image_height_ / 2;
  96   gfx::Rect bar_image_rect(rect.x(),
  97                            bar_image_y,
  98                            rect.width(),
  99                            image_height_);
 100   image_->SetBoundsRect(bar_image_rect);
 101   if (title_) {
 102     // The image_ has some empty space below the bar image, move the title
 103     // a little bit up to look closer to the bar.
 104     gfx::Size title_size = title_->GetPreferredSize();
 105     title_->SetBounds(rect.x(),
 106                       bar_image_y + image_height_ - 3,
 107                       rect.width(),
 108                       title_size.height());
 109   }
 110 }
 111
 112 }  // namespace internal
 113 }  // namespace ash