获取NSTextField内容以进行扩展

Question

如何才能使文本比例符合我给出的界限？

Answer 1

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.