I have a subclass of NSTextView which does:
- (void)setUpData
{
[ [ self textStorage ] setAttributedString: someAttributedString ];
// uses self.usedFont
NSLayoutManager *layoutManager = [ self layoutManager ];
baselineOffset = [ layoutManager defaultBaselineOffsetForFont:
self.usedFont ];
lineHeight = [ layoutManager defaultLineHeightForFont: self.usedFont ];
}
- (void)drawRect:(NSRect)dirtyRect
{
[ super drawRect: dirtyRect ];
for( NSUInteger line = 0; line < NBR_OF_LINES; line++ )
{
CGFloat bax = lineHeight * line + baselineOffset;
[ [ NSColor blueColor ] set ]; // base line
[ NSBezierPath strokeLineFromPoint: NSMakePoint(
NSMinX(dirtyRect), bax )
toPoint:
NSMakePoint( NSMaxX(dirtyRect), bax )
];
};
}
This works, because currently all lines use the same font.
But how would I handle the more general case, where each line might contain
several and/or different fonts?
Kind regards,
Gerriet.
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