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			19 lines
		
	
	
	
		
			769 B
		
	
	
	
		
			Text
		
	
	
	
	
	
			
		
		
	
	
			19 lines
		
	
	
	
		
			769 B
		
	
	
	
		
			Text
		
	
	
	
	
	
// https://html.spec.whatwg.org/multipage/canvas.html#textmetrics
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[Exposed=Window]
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interface TextMetrics {
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    // x-direction
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    readonly attribute double width; // advance width
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    readonly attribute double actualBoundingBoxLeft;
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    readonly attribute double actualBoundingBoxRight;
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    // y-direction
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    readonly attribute double fontBoundingBoxAscent;
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    readonly attribute double fontBoundingBoxDescent;
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    readonly attribute double actualBoundingBoxAscent;
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    readonly attribute double actualBoundingBoxDescent;
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    readonly attribute double emHeightAscent;
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    readonly attribute double emHeightDescent;
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    readonly attribute double hangingBaseline;
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    readonly attribute double alphabeticBaseline;
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    readonly attribute double ideographicBaseline;
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};
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