chrome/browser/ui/libgtk2ui/gtk2_border.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 CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_
   6 #define CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_
   7
   8 #include "base/scoped_observer.h"
   9 #include "ui/gfx/image/image_skia.h"
  10 #include "ui/native_theme/native_theme.h"
  11 #include "ui/native_theme/native_theme_observer.h"
  12 #include "ui/views/border.h"
  13 #include "ui/views/controls/button/button.h"
  14
  15 namespace gfx {
  16 class Canvas;
  17 }
  18
  19 namespace views {
  20 class LabelButton;
  21 class LabelButtonBorder;
  22 }
  23
  24 namespace libgtk2ui {
  25 class Gtk2UI;
  26
  27 // Draws a gtk button border, and manages the memory of the resulting pixbufs.
  28 class Gtk2Border : public views::Border, public ui::NativeThemeObserver {
  29  public:
  30   Gtk2Border(Gtk2UI* gtk2_ui,
  31              views::LabelButton* owning_button,
  32              scoped_ptr<views::LabelButtonBorder> border);
  33   ~Gtk2Border() override;
  34
  35   // Overridden from views::Border:
  36   void Paint(const views::View& view, gfx::Canvas* canvas) override;
  37   gfx::Insets GetInsets() const override;
  38   gfx::Size GetMinimumSize() const override;
  39
  40   // Overridden from views::NativeThemeChangeObserver:
  41   void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;
  42
  43  private:
  44   void PaintState(const ui::NativeTheme::State state,
  45                   const ui::NativeTheme::ExtraParams& extra,
  46                   const gfx::Rect& rect,
  47                   gfx::Canvas* canvas);
  48
  49   Gtk2UI* gtk2_ui_;
  50
  51   gfx::ImageSkia button_images_[2][views::Button::STATE_COUNT];
  52
  53   // The view to which we are a border. We keep track of this so that we can
  54   // force invalidate the layout on theme changes.
  55   views::LabelButton* owning_button_;
  56
  57   // The views::Border that we are replacing in native mode. We keep track of
  58   // this for inset information.
  59   scoped_ptr<views::LabelButtonBorder> border_;
  60
  61   ScopedObserver<ui::NativeTheme, ui::NativeThemeObserver> observer_manager_;
  62
  63   DISALLOW_COPY_AND_ASSIGN(Gtk2Border);
  64 };
  65
  66 }  // namespace libgtk2ui
  67
  68 #endif  // CHROME_BROWSER_UI_LIBGTK2UI_GTK2_BORDER_H_