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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 #import "chrome/browser/ui/cocoa/hyperlink_button_cell.h" | |
| 6 | |
| 7 @interface HyperlinkButtonCell () | |
| 8 - (void)customizeButtonCell; | |
| 9 @end | |
| 10 | |
| 11 @implementation HyperlinkButtonCell | |
| 12 | |
| 13 @dynamic textColor; | |
| 14 @synthesize underlineOnHover = underlineOnHover_; | |
| 15 @synthesize shouldUnderline = shouldUnderline_; | |
| 16 | |
| 17 + (NSColor*)defaultTextColor { | |
| 18 return [NSColor blueColor]; | |
| 19 } | |
| 20 | |
| 21 + (NSButton*)buttonWithString:(NSString*)string { | |
| 22 NSButton* button = [[[NSButton alloc] initWithFrame:NSZeroRect] autorelease]; | |
| 23 base::scoped_nsobject<HyperlinkButtonCell> cell( | |
| 24 [[HyperlinkButtonCell alloc] initTextCell:string]); | |
| 25 [cell setAlignment:NSLeftTextAlignment]; | |
| 26 [button setCell:cell.get()]; | |
| 27 [button setBezelStyle:NSRegularSquareBezelStyle]; | |
| 28 return button; | |
| 29 } | |
| 30 | |
| 31 // Designated initializer. | |
| 32 - (id)init { | |
| 33 if ((self = [super init])) { | |
| 34 [self customizeButtonCell]; | |
| 35 } | |
| 36 return self; | |
| 37 } | |
| 38 | |
| 39 // Initializer called when the cell is loaded from the NIB. | |
| 40 - (id)initWithCoder:(NSCoder*)aDecoder { | |
| 41 if ((self = [super initWithCoder:aDecoder])) { | |
| 42 [self customizeButtonCell]; | |
| 43 } | |
| 44 return self; | |
| 45 } | |
| 46 | |
| 47 // Initializer for code-based creation. | |
| 48 - (id)initTextCell:(NSString*)title { | |
| 49 if ((self = [super initTextCell:title])) { | |
| 50 [self customizeButtonCell]; | |
| 51 } | |
| 52 return self; | |
| 53 } | |
| 54 | |
| 55 // Because an NSButtonCell has multiple initializers, this method performs the | |
| 56 // common cell customization code. | |
| 57 - (void)customizeButtonCell { | |
| 58 [self setBordered:NO]; | |
| 59 [self setTextColor:[HyperlinkButtonCell defaultTextColor]]; | |
| 60 [self setShouldUnderline:YES]; | |
| 61 | |
| 62 CGFloat fontSize = [NSFont systemFontSizeForControlSize:[self controlSize]]; | |
| 63 NSFont* font = [NSFont controlContentFontOfSize:fontSize]; | |
| 64 [self setFont:font]; | |
| 65 | |
| 66 // Do not change button appearance when we are pushed. | |
| 67 [self setHighlightsBy:NSNoCellMask]; | |
| 68 | |
| 69 // We need to set this so that we can override |-mouseEntered:| and | |
| 70 // |-mouseExited:| to change the cursor style on hover states. | |
| 71 [self setShowsBorderOnlyWhileMouseInside:YES]; | |
| 72 } | |
| 73 | |
| 74 - (void)setControlSize:(NSControlSize)size { | |
| 75 [super setControlSize:size]; | |
| 76 [self customizeButtonCell]; // recompute |font|. | |
| 77 } | |
| 78 | |
| 79 // Creates the NSDictionary of attributes for the attributed string. | |
| 80 - (NSDictionary*)linkAttributes { | |
| 81 NSUInteger underlineMask = NSNoUnderlineStyle; | |
| 82 if (shouldUnderline_ && | |
| 83 (!underlineOnHover_ || (mouseIsInside_ && [self isEnabled]))) | |
| 84 underlineMask = NSUnderlinePatternSolid | NSUnderlineStyleSingle; | |
| 85 | |
| 86 base::scoped_nsobject<NSMutableParagraphStyle> paragraphStyle( | |
| 87 [[NSParagraphStyle defaultParagraphStyle] mutableCopy]); | |
| 88 [paragraphStyle setAlignment:[self alignment]]; | |
| 89 [paragraphStyle setLineBreakMode:[self lineBreakMode]]; | |
| 90 | |
| 91 return [NSDictionary dictionaryWithObjectsAndKeys: | |
| 92 [self textColor], NSForegroundColorAttributeName, | |
| 93 [NSNumber numberWithInt:underlineMask], NSUnderlineStyleAttributeName, | |
| 94 [self font], NSFontAttributeName, | |
| 95 [NSCursor pointingHandCursor], NSCursorAttributeName, | |
| 96 paragraphStyle.get(), NSParagraphStyleAttributeName, | |
| 97 nil | |
| 98 ]; | |
| 99 } | |
| 100 | |
| 101 // Override the drawing for the cell so that the custom style attributes | |
| 102 // can always be applied and so that ellipses will appear when appropriate. | |
| 103 - (NSRect)drawTitle:(NSAttributedString*)title | |
| 104 withFrame:(NSRect)frame | |
| 105 inView:(NSView*)controlView { | |
| 106 NSDictionary* linkAttributes = [self linkAttributes]; | |
| 107 NSString* plainTitle = [title string]; | |
| 108 [plainTitle drawWithRect:frame | |
| 109 options:(NSStringDrawingUsesLineFragmentOrigin | | |
| 110 NSStringDrawingTruncatesLastVisibleLine) | |
| 111 attributes:linkAttributes]; | |
| 112 return frame; | |
| 113 } | |
| 114 | |
| 115 // Override the default behavior to draw the border. Instead, change the cursor. | |
| 116 - (void)mouseEntered:(NSEvent*)event { | |
| 117 mouseIsInside_ = YES; | |
| 118 if ([self isEnabled]) | |
| 119 [[NSCursor pointingHandCursor] push]; | |
| 120 else | |
| 121 [[NSCursor currentCursor] push]; | |
| 122 if (underlineOnHover_) | |
| 123 [[self controlView] setNeedsDisplay:YES]; | |
| 124 } | |
| 125 | |
| 126 - (void)mouseExited:(NSEvent*)event { | |
| 127 mouseIsInside_ = NO; | |
| 128 [NSCursor pop]; | |
| 129 if (underlineOnHover_) | |
| 130 [[self controlView] setNeedsDisplay:YES]; | |
| 131 } | |
| 132 | |
| 133 // Setters and getters. | |
| 134 - (NSColor*)textColor { | |
| 135 if ([self isEnabled]) | |
| 136 return textColor_.get(); | |
| 137 else | |
| 138 return [NSColor disabledControlTextColor]; | |
| 139 } | |
| 140 | |
| 141 - (void)setTextColor:(NSColor*)color { | |
| 142 textColor_.reset([color retain]); | |
| 143 } | |
| 144 | |
| 145 // Override so that |-sizeToFit| works better with this type of cell. | |
| 146 - (NSSize)cellSize { | |
| 147 NSSize size = [super cellSize]; | |
| 148 size.width += 2; | |
| 149 return size; | |
| 150 } | |
| 151 | |
| 152 @end | |
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Chromium Code Reviews
Issue 18355002:
Move HyperlinkButtonCell to /ui/base/cocoa/controls. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src