NSShadow 与 NSButton 子类
这是我的代码：
- (void)drawRect:(NSRect)dirtyRect {
// Drawing code here.
// Create the Gradient
NSGradient *fillGradient = nil;
if (mouseIsDown)
fillGradient = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedRed:0.868 green:0.873 blue:0.868 alpha:1.000] endingColor:[NSColor colorWithCalibratedRed:0.687 green:0.687 blue:0.687 alpha:1.000]];
else
fillGradient = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedRed:0.687 green:0.687 blue:0.687 alpha:1.000] endingColor:[NSColor colorWithCalibratedRed:0.868 green:0.873 blue:0.868 alpha:1.000]];
// Add The Text
NSDictionary *att = nil;
NSMutableParagraphStyle *style =
[[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setLineBreakMode:NSLineBreakByWordWrapping];
[style setAlignment:NSLeftTextAlignment];
att = [[NSDictionary alloc] initWithObjectsAndKeys:
style, NSParagraphStyleAttributeName,
[NSColor blackColor],
NSForegroundColorAttributeName, nil];
[style release];
// Create the path
aPath = [[NSBezierPath bezierPath] retain];
[aPath moveToPoint:NSMakePoint(10.0, 0.0)];
[aPath lineToPoint:NSMakePoint(70.0, 0.0)];
[aPath lineToPoint:NSMakePoint(70.0, 23.0)];
[aPath lineToPoint:NSMakePoint(10.0, 23.0)];
[aPath lineToPoint:NSMakePoint(0.0, 10.0)];
NSShadow *shadow = [[NSShadow alloc] init];
[shadow setShadowColor:[NSColor blackColor]];
[shadow setShadowOffset:NSMakeSize(0, 0)];
[shadow setShadowBlurRadius:5];
[shadow set];
NSRect rect;
rect.size = [[self title] sizeWithAttributes:att];
rect.origin.x = floor( NSMidX([self bounds]) - rect.size.width / 2 - 8);
rect.origin.y = floor( NSMidY([self bounds]) - rect.size.height / 2 - 5);
[fillGradient drawInBezierPath:aPath angle:90.0];
[fillGradient release];
[[self title] drawInRect:rect withAttributes:att];
[att release];
} 问题是 NSShadow 位于文本后面而不是 NSBezierPath，“aPath”，我将如何添加 NSBezierPath 的阴影？
Here's My Code:
- (void)drawRect:(NSRect)dirtyRect {
// Drawing code here.
// Create the Gradient
NSGradient *fillGradient = nil;
if (mouseIsDown)
fillGradient = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedRed:0.868 green:0.873 blue:0.868 alpha:1.000] endingColor:[NSColor colorWithCalibratedRed:0.687 green:0.687 blue:0.687 alpha:1.000]];
else
fillGradient = [[NSGradient alloc] initWithStartingColor:[NSColor colorWithCalibratedRed:0.687 green:0.687 blue:0.687 alpha:1.000] endingColor:[NSColor colorWithCalibratedRed:0.868 green:0.873 blue:0.868 alpha:1.000]];
// Add The Text
NSDictionary *att = nil;
NSMutableParagraphStyle *style =
[[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setLineBreakMode:NSLineBreakByWordWrapping];
[style setAlignment:NSLeftTextAlignment];
att = [[NSDictionary alloc] initWithObjectsAndKeys:
style, NSParagraphStyleAttributeName,
[NSColor blackColor],
NSForegroundColorAttributeName, nil];
[style release];
// Create the path
aPath = [[NSBezierPath bezierPath] retain];
[aPath moveToPoint:NSMakePoint(10.0, 0.0)];
[aPath lineToPoint:NSMakePoint(70.0, 0.0)];
[aPath lineToPoint:NSMakePoint(70.0, 23.0)];
[aPath lineToPoint:NSMakePoint(10.0, 23.0)];
[aPath lineToPoint:NSMakePoint(0.0, 10.0)];
NSShadow *shadow = [[NSShadow alloc] init];
[shadow setShadowColor:[NSColor blackColor]];
[shadow setShadowOffset:NSMakeSize(0, 0)];
[shadow setShadowBlurRadius:5];
[shadow set];
NSRect rect;
rect.size = [[self title] sizeWithAttributes:att];
rect.origin.x = floor( NSMidX([self bounds]) - rect.size.width / 2 - 8);
rect.origin.y = floor( NSMidY([self bounds]) - rect.size.height / 2 - 5);
[fillGradient drawInBezierPath:aPath angle:90.0];
[fillGradient release];
[[self title] drawInRect:rect withAttributes:att];
[att release];
}
The problem is that the NSShadow is behind the text not the NSBezierPath, 'aPath', how would I add the shadow the the NSBezierPath?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
尝试在
[NSGraphicsContext 中包装 NSShadow 和贝塞尔路径填充内容（例如，从和aPath = [[NSBezierPath bezierPath] keep];到[fillGradient release];） saveGraphicsState][NSGraphicsContext RestoreGraphicsState]。另外，阴影可能会被视图的边界剪切（我不记得这是否属实）。
（此外，“更合适”的方法可能是子类化
NSButtonCell，重写drawWithFrame:inView:/-drawInteriorWithFrame:inView:< /code> 并从按钮的+cellClass方法返回自定义单元格类（确保也在 IB 中设置正确的单元格类，或者在按钮的-initWithCoder:< /code>）。不过，您这样做的方式可能会满足您的需求。）Try wrapping the NSShadow and bezier path fill stuff (e.g., from
aPath = [[NSBezierPath bezierPath] retain];to[fillGradient release];) in[NSGraphicsContext saveGraphicsState]and[NSGraphicsContext restoreGraphicsState].Also, the shadow may be clipped by the view's bounds (I don't remember if this is true or not).
(Additionally, the "more proper" way to do this would probably be to subclass
NSButtonCellas well, overridingdrawWithFrame:inView:/-drawInteriorWithFrame:inView:and returning your custom cell class from your button's+cellClassmethod (making sure to set the proper cell class in IB as well, or swapping it out in your button's-initWithCoder:). The way you're doing it may meet your needs fine, though.)