It is time.

ui/views/controls/button/image_button.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_
-#define UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_
-
-#include "base/gtest_prod_util.h"
-#include "base/memory/scoped_ptr.h"
-#include "ui/base/layout.h"
-#include "ui/gfx/image/image_skia.h"
-#include "ui/views/controls/button/custom_button.h"
-
-namespace views {
-
-class Painter;
-
-// An image button.
-
-// Note that this type of button is not focusable by default and will not be
-// part of the focus chain.  Call SetFocusable(true) to make it part of the
-// focus chain.
-
-class VIEWS_EXPORT ImageButton : public CustomButton {
- public:
-  static const char kViewClassName[];
-
-  enum HorizontalAlignment {
-    ALIGN_LEFT = 0,
-    ALIGN_CENTER,
-    ALIGN_RIGHT
-  };
-
-  enum VerticalAlignment {
-    ALIGN_TOP = 0,
-    ALIGN_MIDDLE,
-    ALIGN_BOTTOM
-  };
-
-  explicit ImageButton(ButtonListener* listener);
-  virtual ~ImageButton();
-
-  // Returns the image for a given |state|.
-  virtual const gfx::ImageSkia& GetImage(ButtonState state) const;
-
-  // Set the image the button should use for the provided state.
-  virtual void SetImage(ButtonState state, const gfx::ImageSkia* image);
-
-  // Set the background details.
-  void SetBackground(SkColor color,
-                     const gfx::ImageSkia* image,
-                     const gfx::ImageSkia* mask);
-
-  // Sets how the image is laid out within the button's bounds.
-  void SetImageAlignment(HorizontalAlignment h_align,
-                         VerticalAlignment v_align);
-
-  void SetFocusPainter(scoped_ptr<Painter> focus_painter);
-
-  // The minimum size of the contents (not including the border). The contents
-  // will be at least this size, but may be larger if the image itself is
-  // larger.
-  const gfx::Size& minimum_image_size() const { return minimum_image_size_; }
-  void SetMinimumImageSize(const gfx::Size& size);
-
-  // Whether we should draw our images resources horizontally flipped.
-  void SetDrawImageMirrored(bool mirrored) {
-    draw_image_mirrored_ = mirrored;
-  }
-
-  // Overridden from View:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual const char* GetClassName() const override;
-  virtual void OnPaint(gfx::Canvas* canvas) override;
-
- protected:
-  // Overridden from View:
-  virtual void OnFocus() override;
-  virtual void OnBlur() override;
-
-  // Returns the image to paint. This is invoked from paint and returns a value
-  // from images.
-  virtual gfx::ImageSkia GetImageToPaint();
-
-  // Updates button background for |scale_factor|.
-  void UpdateButtonBackground(ui::ScaleFactor scale_factor);
-
-  Painter* focus_painter() { return focus_painter_.get(); }
-
-  // The images used to render the different states of this button.
-  gfx::ImageSkia images_[STATE_COUNT];
-
-  gfx::ImageSkia background_image_;
-
- private:
-  FRIEND_TEST_ALL_PREFIXES(ImageButtonTest, Basics);
-  FRIEND_TEST_ALL_PREFIXES(ImageButtonTest, ImagePositionWithBorder);
-  FRIEND_TEST_ALL_PREFIXES(ImageButtonTest, LeftAlignedMirrored);
-  FRIEND_TEST_ALL_PREFIXES(ImageButtonTest, RightAlignedMirrored);
-
-  // Returns the correct position of the image for painting.
-  gfx::Point ComputeImagePaintPosition(const gfx::ImageSkia& image);
-
-  // Image alignment.
-  HorizontalAlignment h_alignment_;
-  VerticalAlignment v_alignment_;
-  gfx::Size minimum_image_size_;
-
-  // Whether we draw our resources horizontally flipped. This can happen in the
-  // linux titlebar, where image resources were designed to be flipped so a
-  // small curved corner in the close button designed to fit into the frame
-  // resources.
-  bool draw_image_mirrored_;
-
-  scoped_ptr<Painter> focus_painter_;
-
-  DISALLOW_COPY_AND_ASSIGN(ImageButton);
-};
-
-////////////////////////////////////////////////////////////////////////////////
-//
-// ToggleImageButton
-//
-// A toggle-able ImageButton.  It swaps out its graphics when toggled.
-//
-////////////////////////////////////////////////////////////////////////////////
-class VIEWS_EXPORT ToggleImageButton : public ImageButton {
- public:
-  explicit ToggleImageButton(ButtonListener* listener);
-  virtual ~ToggleImageButton();
-
-  // Change the toggled state.
-  void SetToggled(bool toggled);
-
-  // Like ImageButton::SetImage(), but to set the graphics used for the
-  // "has been toggled" state.  Must be called for each button state
-  // before the button is toggled.
-  void SetToggledImage(ButtonState state, const gfx::ImageSkia* image);
-
-  // Set the tooltip text displayed when the button is toggled.
-  void SetToggledTooltipText(const base::string16& tooltip);
-
-  // Overridden from ImageButton:
-  virtual const gfx::ImageSkia& GetImage(ButtonState state) const override;
-  virtual void SetImage(ButtonState state,
-                        const gfx::ImageSkia* image) override;
-
-  // Overridden from View:
-  virtual bool GetTooltipText(const gfx::Point& p,
-                              base::string16* tooltip) const override;
-  virtual void GetAccessibleState(ui::AXViewState* state) override;
-
- private:
-  // The parent class's images_ member is used for the current images,
-  // and this array is used to hold the alternative images.
-  // We swap between the two when toggling.
-  gfx::ImageSkia alternate_images_[STATE_COUNT];
-
-  // True if the button is currently toggled.
-  bool toggled_;
-
-  // The parent class's tooltip_text_ is displayed when not toggled, and
-  // this one is shown when toggled.
-  base::string16 toggled_tooltip_text_;
-
-  DISALLOW_COPY_AND_ASSIGN(ToggleImageButton);
-};
-
-}  // namespace views
-
-#endif  // UI_VIEWS_CONTROLS_BUTTON_IMAGE_BUTTON_H_