如何才能使文本比例符合我给出的界限？
解决方法
我过去做过类似的事.
-(void)calcFontSizeToFitRect:(NSRect)r {
float targetWidth = r.size.width - xMargin;
float targetHeight = r.size.height - yMargin;
// the strategy is to start with a small font size and go larger until I'm larger than one of the target sizes
int i;
for (i=minFontSize; i<maxFontSize; i++) {
NSDictionary* attrs = [[NSDictionary alloc] initWithObjectsAndKeys:[NSFont fontWithName:currentFontName size:i],NSFontAttributeName,nil];
NSSize strSize = [string sizeWithAttributes:attrs];
[attrs release];
if (strSize.width > targetWidth || strSize.height > targetHeight) break;
}
[self setCurrentFontSize:(i-1)];
}
字符串变量是您想要调整大小的文本. xMargin和yMargin变量用于您想要的间距. minFontSize和maxFontSize变量限制了您想要的小或大.
