ui/app_list/views/tile_item_view.h

   1 // Copyright 2014 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 #ifndef UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
   6 #define UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_
   7
   8 #include "base/strings/string16.h"
   9 #include "third_party/skia/include/core/SkColor.h"
  10 #include "ui/app_list/app_list_export.h"
  11 #include "ui/app_list/views/image_shadow_animator.h"
  12 #include "ui/views/controls/button/button.h"
  13 #include "ui/views/controls/button/custom_button.h"
  14
  15 namespace gfx {
  16 class ImageSkia;
  17 }
  18
  19 namespace views {
  20 class ImageView;
  21 class Label;
  22 }
  23
  24 namespace app_list {
  25
  26 // The view for a tile in the app list on the start/search page.
  27 class APP_LIST_EXPORT TileItemView : public views::CustomButton,
  28                                      public views::ButtonListener,
  29                                      public ImageShadowAnimator::Delegate {
  30  public:
  31   enum HoverStyle {
  32     HOVER_STYLE_ANIMATE_SHADOW,
  33     HOVER_STYLE_DARKEN_BACKGROUND,
  34   };
  35
  36   TileItemView();
  37   ~TileItemView() override;
  38
  39   bool selected() { return selected_; }
  40   void SetSelected(bool selected);
  41
  42   // Informs the TileItemView of its parent's background color. The controls
  43   // within the TileItemView will adapt to suit the given color.
  44   void SetParentBackgroundColor(SkColor color);
  45   SkColor parent_background_color() { return parent_background_color_; }
  46
  47   // Sets the behavior of the tile item on mouse hover.
  48   void SetHoverStyle(HoverStyle hover_style);
  49
  50   // Overridden from views::CustomButton:
  51   void StateChanged() override;
  52
  53   // Overridden from views::View:
  54   void Layout() override;
  55
  56   // Overridden from ImageShadowAnimator::Delegate:
  57   void ImageShadowAnimationProgressed(ImageShadowAnimator* animator) override;
  58
  59  protected:
  60   void SetIcon(const gfx::ImageSkia& icon);
  61
  62   void SetTitle(const base::string16& title);
  63
  64  private:
  65   void UpdateBackgroundColor();
  66
  67   // Overridden from views::View:
  68   gfx::Size GetPreferredSize() const override;
  69   bool GetTooltipText(const gfx::Point& p,
  70                       base::string16* tooltip) const override;
  71
  72   SkColor parent_background_color_;
  73   HoverStyle hover_style_;
  74   scoped_ptr<ImageShadowAnimator> image_shadow_animator_;
  75
  76   views::ImageView* icon_;  // Owned by views hierarchy.
  77   views::Label* title_;     // Owned by views hierarchy.
  78
  79   bool selected_;
  80
  81   DISALLOW_COPY_AND_ASSIGN(TileItemView);
  82 };
  83
  84 }  // namespace app_list
  85
  86 #endif  // UI_APP_LIST_VIEWS_TILE_ITEM_VIEW_H_