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