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// Copyright (c) 2011 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 CHROME_BROWSER_UI_COCOA_IMAGE_BUTTON_CELL_H_
#define CHROME_BROWSER_UI_COCOA_IMAGE_BUTTON_CELL_H_
#import <Cocoa/Cocoa.h>
#include "base/mac/scoped_nsobject.h"
namespace ui {
class ThemeProvider;
}
namespace image_button_cell {
// Possible states
enum ButtonState {
kDefaultState = 0,
kHoverState,
kPressedState,
kDisabledState,
// The same as above, but for non-main, non-key windows.
kDefaultStateBackground,
kHoverStateBackground,
kButtonStateCount
};
} // namespace ImageButtonCell
@protocol ImageButton
@optional
// Sent from an ImageButtonCell to its view when the mouse enters or exits the
// cell.
- (void)mouseInsideStateDidChange:(BOOL)isInside;
@end
// A button cell that can disable a different image for each possible button
// state. Images are specified by image IDs.
@interface ImageButtonCell : NSButtonCell {
@private
struct {
// At most one of these two fields will be non-null.
int imageId;
base::scoped_nsobject<NSImage> image;
} image_[image_button_cell::kButtonStateCount];
BOOL isMouseInside_;
}
@property(assign, nonatomic) BOOL isMouseInside;
// Gets the image for the given button state. Will load from a resource pak if
// the image was originally set using an image ID.
- (NSImage*)imageForState:(image_button_cell::ButtonState)state
view:(NSView*)controlView;
// Sets the image for the given button state using an image ID.
// The image will be lazy loaded from a resource pak -- important because
// this is in the hot path for startup.
- (void)setImageID:(NSInteger)imageID
forButtonState:(image_button_cell::ButtonState)state;
// Sets the image for the given button state using an image.
- (void)setImage:(NSImage*)image
forButtonState:(image_button_cell::ButtonState)state;
// Gets the alpha to use to draw the button for the current window focus state.
- (CGFloat)imageAlphaForWindowState:(NSWindow*)window;
// Returns the theme provider for the given |window|; this allows subclasses to
// pass in a different theme provider to use if appropriate.
- (ui::ThemeProvider*)themeProviderForWindow:(NSWindow*)window;
// Draws the cell's image within |cellFrame|.
- (void)drawImageWithFrame:(NSRect)cellFrame inView:(NSView*)controlView;
// If |controlView| is a first responder then draws a blue focus ring.
- (void)drawFocusRingWithFrame:(NSRect)cellFrame inView:(NSView*)controlView;
@end
#endif // CHROME_BROWSER_UI_COCOA_IMAGE_BUTTON_CELL_H_
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