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Re: How to draw random images in ArrayCtrl-cell using Display? [message #53658 is a reply to message #53656]

Sun, 19 April 2020 12:50

Oblivion
Messages: 1094
Registered: August 2007

Senior Contributor

Hello slashupp

Quote:

How do I pass an Image as a Value to a Display and access the image in the Display-code so I can draw it?

There is already ImageDisplay(), FittedImageDisplay(), CenteredImageDisplay(), and CenteredHighlightImageDisplay() classes in UPP for this task. You can use them if you are not going to further process the images before they are displayed.

However, if you want to use your code, below code should work.

virtual void Paint(Draw& w, const Rect& r, const Value& q, Color ink, Color paper, dword style) const
	{
		w.DrawRect(r, paper);
		Image img = q; // This should be enough if q is a Upp::Image.
		if (!img.IsNullInstance()||img.IsEmpty()) w.DrawImage(r, img);
	}

Or, if you like strict/pedantic code

    const Image& img = q.To<Image>();

This will work too.

Best regards,
Oblivion

Github page: https://github.com/ismail-yilmaz
upp-components: https://github.com/ismail-yilmaz/upp-components
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Sun, 19 April 2020 12:56]

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