chrome/browser/ui/views/location_bar/icon_label_bubble_view.h

   1 // Copyright (c) 2012 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 CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_
   6 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_
   7
   8 #include <string>
   9
  10 #include "base/strings/string16.h"
  11 #include "ui/gfx/geometry/insets.h"
  12 #include "ui/gfx/geometry/size.h"
  13 #include "ui/views/controls/label.h"
  14 #include "ui/views/view.h"
  15
  16 namespace gfx {
  17 class Canvas;
  18 class FontList;
  19 class ImageSkia;
  20 }
  21
  22 namespace views {
  23 class ImageView;
  24 class Label;
  25 class Painter;
  26 }
  27
  28 // View used to draw a bubble, containing an icon and a label.  We use this as a
  29 // base for the classes that handle the EV bubble, tab-to-search UI, and
  30 // content settings.
  31 class IconLabelBubbleView : public views::View {
  32  public:
  33   IconLabelBubbleView(int contained_image,
  34                       const gfx::FontList& font_list,
  35                       SkColor text_color,
  36                       SkColor parent_background_color,
  37                       bool elide_in_middle);
  38   ~IconLabelBubbleView() override;
  39
  40   // Sets a background that paints |background_images| in a scalable grid.
  41   // Subclasses are required to call this or SetBackgroundImageWithInsets during
  42   // construction.
  43   void SetBackgroundImageGrid(const int background_images[]);
  44
  45   // Divides the image designated by |background_image_id| into nine regions.
  46   // The four corners are specified by |insets|, the remainder are stretched to
  47   // fill the background. Subclasses are required to call this or
  48   // SetBackgroundImageGrid during construction.
  49   void SetBackgroundImageWithInsets(int background_image_id,
  50                                     gfx::Insets& insets);
  51
  52   void SetLabel(const base::string16& label);
  53   void SetImage(const gfx::ImageSkia& image);
  54   void set_is_extension_icon(bool is_extension_icon) {
  55     is_extension_icon_ = is_extension_icon;
  56   }
  57
  58  protected:
  59   views::ImageView* image() { return image_; }
  60   views::Label* label() { return label_; }
  61
  62   // Returns true when the background should be rendered.
  63   virtual bool ShouldShowBackground() const;
  64
  65   // Returns a multiplier used to calculate the actual width of the view based
  66   // on its desired width.  This ranges from 0 for a zero-width view to 1 for a
  67   // full-width view and can be used to animate the width of the view.
  68   virtual double WidthMultiplier() const;
  69
  70   // views::View:
  71   gfx::Size GetPreferredSize() const override;
  72   void Layout() override;
  73
  74   const gfx::FontList& font_list() const { return label_->font_list(); }
  75
  76   gfx::Size GetSizeForLabelWidth(int width) const;
  77
  78  private:
  79   // Amount of padding at the edges of the bubble.  If |by_icon| is true, this
  80   // is the padding next to the icon; otherwise it's the padding next to the
  81   // label.  (We increase padding next to the label by the amount of padding
  82   // "built in" to the icon in order to make the bubble appear to have
  83   // symmetrical padding.)
  84   int GetBubbleOuterPadding(bool by_icon) const;
  85
  86   // Sets a background color on |label_| based on |background_image_color| and
  87   // |parent_background_color_|.
  88   void SetLabelBackgroundColor(SkColor background_image_color);
  89
  90   // views::View:
  91   const char* GetClassName() const override;
  92   void OnPaint(gfx::Canvas* canvas) override;
  93
  94   // For painting the background.
  95   scoped_ptr<views::Painter> background_painter_;
  96
  97   // The contents of the bubble.
  98   views::ImageView* image_;
  99   views::Label* label_;
 100
 101   bool is_extension_icon_;
 102
 103   SkColor parent_background_color_;
 104
 105   DISALLOW_COPY_AND_ASSIGN(IconLabelBubbleView);
 106 };
 107
 108 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_ICON_LABEL_BUBBLE_VIEW_H_