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