我有什么选择在
Cocoa的iTunes顶部重新创建框,或者像Apple在XCode 4中使用的那样？
解决方法
我必须为我的一个项目编写类似的代码.对于我的解决方案,您将需要此
tutorial中的示例代码中提供的两个类别.此代码将绘制背景渐变和必要的阴影,您可以在控件内添加其他内容.目前,代码将绘制Xcode样式渐变作为背景,但如果您需要,可以将其注释掉并取消注释iTunes样式.希望这可以帮助.
#import "NSShadow+MCAdditions.h" // from the tutorial linked to above
#import "NSBezierPath+MCAdditions.h" // from the same tutorial
- (void)drawRect:(NSRect)dirtyRect {
static NSShadow *kDropShadow = nil;
static NSShadow *kInnerShadow = nil;
static NSGradient *kBackgroundGradient = nil;
static NSColor *kBorderColor = nil;
if (kDropShadow == nil) {
kDropShadow = [[NSShadow alloc] initWithColor:[NSColor colorWithCalibratedWhite:.863 alpha:.75] offset:NSMakeSize(0,-1.0) blurRadius:1.0];
kInnerShadow = [[NSShadow alloc] initWithColor:[NSColor colorWithCalibratedWhite:0.0 alpha:.52] offset:NSMakeSize(0.0,-1.0) blurRadius:4.0];
kBorderColor = [[NSColor colorWithCalibratedWhite:0.569 alpha:1.0] retain];
// iTunes style
/*
kBackgroundGradient = [[NSGradient alloc] initWithColorsAndLocations:[NSColor colorWithCalibratedRed:0.929 green:0.945 blue:0.882 alpha:1.0],0.0,[NSColor colorWithCalibratedRed:0.902 green:0.922 blue:0.835 alpha:1.0],0.5,[NSColor colorWithCalibratedRed:0.871 green:0.894 blue:0.78 alpha:1.0],[NSColor colorWithCalibratedRed:0.949 green:0.961 blue:0.878 alpha:1.0],1.0,nil];
*/
// Xcode style
kBackgroundGradient = [[NSGradient alloc] initWithColorsAndLocations:[NSColor colorWithCalibratedRed:0.957 green:0.976 blue:1.0 alpha:1.0],[NSColor colorWithCalibratedRed:0.871 green:0.894 blue:0.918 alpha:1.0],[NSColor colorWithCalibratedRed:0.831 green:0.851 blue:0.867 alpha:1.0],[NSColor colorWithCalibratedRed:0.82 green:0.847 blue:0.89 alpha:1.0],nil];
}
NSRect bounds = [self bounds];
bounds.size.height -= 1.0;
bounds.origin.y += 1.0;
NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:bounds xRadius:3.5 yRadius:3.5];
[NSGraphicsContext saveGraphicsState];
[kDropShadow set];
[path fill];
[NSGraphicsContext restoreGraphicsState];
[kBackgroundGradient drawInBezierPath:path angle:-90.0];
[kBorderColor setStroke];
[path strokeInside];
[path fillWithInnerShadow:kInnerShadow];
}
