I am writing an application for Windows 10 using Win2D and I'm trying to draw a shape which scales dynamically to fit whatever text happens to be in it.
What I'd like to do is work out how big a particular string would be with a given CanvasTextFormat and then use that to set the size of the shape.
My problem is I can't seem to find a way of working out how big the string will be?
See code below to calculate the required size (look for "theRectYouAreLookingFor")
private void CanvasControl_Draw(CanvasControl sender, CanvasDrawEventArgs args)
{
CanvasDrawingSession drawingSession = args.DrawingSession;
float xLoc = 100.0f;
float yLoc = 100.0f;
CanvasTextFormat format = new CanvasTextFormat {FontSize = 30.0f, WordWrapping = CanvasWordWrapping.NoWrap};
CanvasTextLayout textLayout = new CanvasTextLayout(drawingSession, "Hello World!", format, 0.0f, 0.0f);
Rect theRectYouAreLookingFor = new Rect(xLoc + textLayout.DrawBounds.X, yLoc + textLayout.DrawBounds.Y, textLayout.DrawBounds.Width, textLayout.DrawBounds.Height);
drawingSession.DrawRectangle(theRectYouAreLookingFor, Colors.Green, 1.0f);
drawingSession.DrawTextLayout(textLayout, xLoc, yLoc, Colors.Yellow);
}
If you create a CanvasTextLayout with a requestedWidth of 0, like in the example of Michael Vach, you may want to disable Word Wrap in Win2D 1.23. Like:
var textLayout = new CanvasTextLayout(drawingSession, "Hello World!", fontFormat, 0.0f, 0.0f) {
WordWrapping = CanvasWordWrapping.NoWrap
};
var completeOuterSize = textLayout.LayoutBounds
(I'm not allowed to comment)