// 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 #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 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. - (const 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_