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Re: How to blur a Ctrl [message #48774 is a reply to message #48773]

Wed, 13 September 2017 19:13

mirek
Messages: 13975
Registered: November 2005

Ultimate Member

koldo wrote on Wed, 13 September 2017 18:35

Hello all

I wanted to blur an area of a Ctrl, so that user can distinguish but cannot realize the details under the blurred area.

Do you know if it is possible?

A possible way would be to "mask" the Ctrl by painting small squares in void Paint(), but maybe it would be possible a more professional blurring effect.

Relatively easy way is to go through Image...

This is far from good, but to give the idea:

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

struct MyApp : TopWindow {
	virtual void Paint(Draw& w) {
		ImageDraw iw(GetSize());
		iw.DrawRect(GetSize(), White());
		iw.DrawText(10, 10, "Hello World!", Arial(20));
		Image m = iw;
		m = Sharpen(m, -200);
		m = Sharpen(m, -200);
		m = Sharpen(m, -200);
		m = Sharpen(m, -200);
		m = Sharpen(m, -200);
		m = Sharpen(m, -200);
		w.DrawImage(0, 0, m);
	}
};

GUI_APP_MAIN
{
	MyApp().Run();
}

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