获取字体的最大高度

发布于 2024-07-07 23:48:54 字数 915 浏览 7 评论 0原文

所以我有一个 NSFont，我想获得任何字符的最大尺寸，即。间距和字母高度。 [font maxAdvancement] 似乎返回 {pitch, 0} 的 NSSize，所以这没有帮助。边界矩形似乎也不起作用，jwz 的类似问题的建议是创建一个贝塞尔曲线路径，附加字形并获取边界矩形也会返回 {0, 0}。这里给出了什么？

更新：我用来获取贝塞尔曲线大小的代码是这样的：

NSBezierPath *bezier = [NSBezierPath bezierPath];
NSGlyph g;
{
    NSTextStorage *ts = [[NSTextStorage alloc] initWithString:@" "];
    [ts setFont:font];
    NSLayoutManager *lm = [[NSLayoutManager alloc] init];
    NSTextContainer *tc = [[NSTextContainer alloc] init];
    [lm addTextContainer:tc];
    [tc release]; // lm retains tc
    [ts addLayoutManager:lm];
    [lm release]; // ts retains lm
    g = [lm glyphAtIndex:0];
    [ts release];
}
NSPoint pt = {0.0f};
[bezier moveToPoint:pt];
[bezier appendBezierPathWithGlyph:g inFont:font];
NSRect bounds = [bezier bounds];

原文

So I have an NSFont, and I want to get the maximum dimensions for any characters, ie. the pitch and letter height. [font maximumAdvancement] seems to return an NSSize of {pitch, 0}, so that's not helping. Bounding rect doesn't seem to work either, and the suggestion from jwz's similar question of creating a bezier path, appending a glyph and getting the bounding rectange is also giving me back {0, 0}. What gives here?

UPDATE: The code I'm using to get the bezier size is this:

NSBezierPath *bezier = [NSBezierPath bezierPath];
NSGlyph g;
{
    NSTextStorage *ts = [[NSTextStorage alloc] initWithString:@" "];
    [ts setFont:font];
    NSLayoutManager *lm = [[NSLayoutManager alloc] init];
    NSTextContainer *tc = [[NSTextContainer alloc] init];
    [lm addTextContainer:tc];
    [tc release]; // lm retains tc
    [ts addLayoutManager:lm];
    [lm release]; // ts retains lm
    g = [lm glyphAtIndex:0];
    [ts release];
}
NSPoint pt = {0.0f};
[bezier moveToPoint:pt];
[bezier appendBezierPathWithGlyph:g inFont:font];
NSRect bounds = [bezier bounds];

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