Promotic

measureText - method of the CanvasCtx object

Description:
Returns object that contains the width of the specified text (in pixels).
Syntax:
Object measureText(Long text)
Parameters:
text(Long) Measured text
Note:
This method is also functional in Web panels.
See also:
- CanvasCtx.font (property)
Example:
The ctx variable represents the drawing canvas (CanvasCtx). The setup is done on the "Draw" tab at the beginning of the script of drawing event onDraw as follows:
 
var ctx = pEvent.GetCtx(1);
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ctx.font = "30px Arial";
var txt = "Promotic";
ctx.fillText("width:" + ctx.measureText(txt), 10, 50);
ctx.fillText(txt, 10, 100);

History:
Pm8.02.06: Created
PROMOTIC 9.0.27 SCADA system documentation MICROSYS, spol. s r.o.

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