ui/message_center/views/notification_button.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 "ui/message_center/views/notification_button.h"
   6
   7 #include "ui/gfx/canvas.h"
   8 #include "ui/message_center/message_center_style.h"
   9 #include "ui/message_center/views/constants.h"
  10 #include "ui/views/background.h"
  11 #include "ui/views/border.h"
  12 #include "ui/views/controls/image_view.h"
  13 #include "ui/views/controls/label.h"
  14 #include "ui/views/layout/box_layout.h"
  15 #include "ui/views/painter.h"
  16
  17 namespace message_center {
  18
  19 NotificationButton::NotificationButton(views::ButtonListener* listener)
  20     : views::CustomButton(listener),
  21       icon_(NULL),
  22       title_(NULL),
  23       focus_painter_(views::Painter::CreateSolidFocusPainter(
  24           message_center::kFocusBorderColor,
  25           gfx::Insets(1, 2, 2, 2))) {
  26   SetFocusable(true);
  27   set_request_focus_on_press(false);
  28   set_notify_enter_exit_on_child(true);
  29   SetLayoutManager(
  30       new views::BoxLayout(views::BoxLayout::kHorizontal,
  31                            message_center::kButtonHorizontalPadding,
  32                            kButtonVecticalPadding,
  33                            message_center::kButtonIconToTitlePadding));
  34 }
  35
  36 NotificationButton::~NotificationButton() {
  37 }
  38
  39 void NotificationButton::SetIcon(const gfx::ImageSkia& image) {
  40   if (icon_ != NULL)
  41     delete icon_;  // This removes the icon from this view's children.
  42   if (image.isNull()) {
  43     icon_ = NULL;
  44   } else {
  45     icon_ = new views::ImageView();
  46     icon_->SetImageSize(gfx::Size(message_center::kNotificationButtonIconSize,
  47                                   message_center::kNotificationButtonIconSize));
  48     icon_->SetImage(image);
  49     icon_->SetHorizontalAlignment(views::ImageView::LEADING);
  50     icon_->SetVerticalAlignment(views::ImageView::LEADING);
  51     icon_->SetBorder(views::Border::CreateEmptyBorder(
  52         message_center::kButtonIconTopPadding, 0, 0, 0));
  53     AddChildViewAt(icon_, 0);
  54   }
  55 }
  56
  57 void NotificationButton::SetTitle(const base::string16& title) {
  58   if (title_ != NULL)
  59     delete title_;  // This removes the title from this view's children.
  60   if (title.empty()) {
  61     title_ = NULL;
  62   } else {
  63     title_ = new views::Label(title);
  64     title_->SetHorizontalAlignment(gfx::ALIGN_LEFT);
  65     title_->SetEnabledColor(message_center::kRegularTextColor);
  66     title_->SetBackgroundColor(kRegularTextBackgroundColor);
  67     title_->SetBorder(
  68         views::Border::CreateEmptyBorder(kButtonTitleTopPadding, 0, 0, 0));
  69     AddChildView(title_);
  70   }
  71   SetAccessibleName(title);
  72 }
  73
  74 gfx::Size NotificationButton::GetPreferredSize() {
  75   return gfx::Size(message_center::kNotificationWidth,
  76                    message_center::kButtonHeight);
  77 }
  78
  79 int NotificationButton::GetHeightForWidth(int width) {
  80   return message_center::kButtonHeight;
  81 }
  82
  83 void NotificationButton::OnPaint(gfx::Canvas* canvas) {
  84   CustomButton::OnPaint(canvas);
  85   views::Painter::PaintFocusPainter(this, canvas, focus_painter_.get());
  86 }
  87
  88 void NotificationButton::OnFocus() {
  89   views::CustomButton::OnFocus();
  90   ScrollRectToVisible(GetLocalBounds());
  91   // We render differently when focused.
  92   SchedulePaint();
  93  }
  94
  95 void NotificationButton::OnBlur() {
  96   views::CustomButton::OnBlur();
  97   // We render differently when focused.
  98   SchedulePaint();
  99 }
 100
 101 void NotificationButton::StateChanged() {
 102   if (state() == STATE_HOVERED || state() == STATE_PRESSED) {
 103     set_background(views::Background::CreateSolidBackground(
 104         message_center::kHoveredButtonBackgroundColor));
 105   } else {
 106     set_background(NULL);
 107   }
 108 }
 109
 110 }  // namespace message_center