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      1 // Copyright (c) 2012 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_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_BUTTON_
      6 #define CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_BUTTON_
      7 
      8 #import <Cocoa/Cocoa.h>
      9 
     10 #import "ui/base/cocoa/tracking_area.h"
     11 
     12 namespace constrained_window_button {
     13 const CGFloat kButtonMinWidth = 72;
     14 }
     15 
     16 @protocol ConstrainedWindowButtonDrawableCell
     17 @property (nonatomic, assign) BOOL isMouseInside;
     18 - (BOOL)isEnabled;
     19 - (BOOL)isHighlighted;
     20 @end
     21 
     22 // A push button for use in a constrained window. Specialized constrained
     23 // windows that need a push button should use this class instead of NSButton.
     24 @interface ConstrainedWindowButton : NSButton {
     25  @private
     26   ui::ScopedCrTrackingArea trackingArea_;
     27 }
     28 
     29 extern const CGFloat buttonMinWidth_;
     30 
     31 // Draws the background and shadow inside |path| with the appropriate
     32 // colors for |buttonState|, onto |view|.
     33 + (void)DrawBackgroundAndShadowForPath:(NSBezierPath*)path
     34                           withCell:(id<ConstrainedWindowButtonDrawableCell>)cell
     35                             inView:(NSView*)view;
     36 
     37 // Draws the highlight inside |path|, with the color for |buttonState|,
     38 // onto |view|.
     39 + (void)DrawInnerHighlightForPath:(NSBezierPath*)path
     40                          withCell:(id<ConstrainedWindowButtonDrawableCell>)cell
     41                            inView:(NSView*)view;
     42 
     43 // Draws the border along |path|, with a color according to |buttonState|,
     44 // onto |view|.
     45 + (void)DrawBorderForPath:(NSBezierPath*)path
     46                  withCell:(id<ConstrainedWindowButtonDrawableCell>)cell
     47                    inView:(NSView*)view;
     48 @end
     49 
     50 // A button cell used by ConstrainedWindowButton.
     51 @interface ConstrainedWindowButtonCell :
     52     NSButtonCell<ConstrainedWindowButtonDrawableCell> {
     53  @private
     54   BOOL isMouseInside_;
     55 }
     56 
     57 @end
     58 
     59 #endif  // CHROME_BROWSER_UI_COCOA_CONSTRAINED_WINDOW_CONSTRAINED_WINDOW_BUTTON_
     60