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      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
    114