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// Copyright (c) 2010 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_COCOA_GRADIENT_BUTTON_CELL_H_
#define CHROME_BROWSER_COCOA_GRADIENT_BUTTON_CELL_H_
#import <Cocoa/Cocoa.h>
#include "base/scoped_nsobject.h"
class ThemeProvider;
// Base class for button cells for toolbar and bookmark bar.
//
// This is a button cell that handles drawing/highlighting of buttons.
// The appearance is determined by setting the cell's tag (not the
// view's) to one of the constants below (ButtonType).
// Set this as the cell's tag.
enum {
kLeftButtonType = -1,
kLeftButtonWithShadowType = -2,
kStandardButtonType = 0,
kRightButtonType = 1,
kMiddleButtonType = 2,
// Draws like a standard button, except when clicked where the interior
// doesn't darken using the theme's "pressed" gradient. Instead uses the
// normal un-pressed gradient.
kStandardButtonTypeWithLimitedClickFeedback = 3,
};
typedef NSInteger ButtonType;
@interface GradientButtonCell : NSButtonCell {
@private
// Custom drawing means we need to perform our own mouse tracking if
// the cell is setShowsBorderOnlyWhileMouseInside:YES.
BOOL isMouseInside_;
scoped_nsobject<NSTrackingArea> trackingArea_;
BOOL shouldTheme_;
CGFloat hoverAlpha_; // 0-1. Controls the alpha during mouse hover
NSTimeInterval lastHoverUpdate_;
scoped_nsobject<NSGradient> gradient_;
scoped_nsobject<NSImage> overlayImage_;
}
// Turn off theming. Temporary work-around.
- (void)setShouldTheme:(BOOL)shouldTheme;
- (void)drawBorderAndFillForTheme:(ThemeProvider*)themeProvider
controlView:(NSView*)controlView
innerPath:(NSBezierPath*)innerPath
showClickedGradient:(BOOL)showClickedGradient
showHighlightGradient:(BOOL)showHighlightGradient
hoverAlpha:(CGFloat)hoverAlpha
active:(BOOL)active
cellFrame:(NSRect)cellFrame
defaultGradient:(NSGradient*)defaultGradient;
// Let the view know when the mouse moves in and out. A timer will update
// the current hoverAlpha_ based on these events.
- (void)setMouseInside:(BOOL)flag animate:(BOOL)animate;
// Gets the path which tightly bounds the outside of the button. This is needed
// to produce images of clear buttons which only include the area inside, since
// the background of the button is drawn by someone else.
- (NSBezierPath*)clipPathForFrame:(NSRect)cellFrame
inView:(NSView*)controlView;
@property(assign, nonatomic) CGFloat hoverAlpha;
// An image that will be drawn after the normal content of the button cell,
// overlaying it. Never themed.
@property(retain, nonatomic) NSImage* overlayImage;
@end
@interface GradientButtonCell(TestingAPI)
- (BOOL)isMouseInside;
@end
#endif // CHROME_BROWSER_COCOA_GRADIENT_BUTTON_CELL_H_
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