PureBasic Forum

Hello,

I want to make some custom gadgets, but using ImageGadget() does not allow me to make parts transparent. For example, if there is a disabled ImageGadget in the Background, I want my custom gadgets to have transparent areas which are showing the background image. Imagine a custom button gadget with round button shape. I need transparent corners. Also, it needs to be plattform independent (Win, Lin, Mac).

More and more customers want me to make skinned form and set the window background to be a inconspicuous texture (image). I can use a disabled ImageGadget() as background (which works fine so far), but I can no longer use TextGadget() etc. because of the missing transparent background. And I'm stuck in doing my own cross plattform custom gadgets if I can not have transparency in any gadget. The benefit of using an existing gadget would be the standard event handling which I prefer.

Is there a cross plattform way to make ImageGadget() or CanvasGadget() transparent? Or any other gadget type?

Kukulkan

on windows you should be able to use regions on a gadget and linux by using pixbufs perhaps
http://www.gtk.org/api/2.6/gdk/gdk-Pixbufs.html

Hello idle,


You mean to use regions to draw the gadget on? Is that allowing me alpha channel to underlying gadgets? As far as I know, this is only for shapes (but not allowing me to do a real shaddow by using alpha channel). Or am I wrong?


If I read documents about pixbufs, it sounds like a canvas area to me. Maybe the same like the Canvas Gadget? Is that allowing me alpha channel to underlying gadgets?

Is someone having some good examples for using pixbufs in PureBasic?

Thanks,

Kukulkan

I guess for cross platform it'd be easier to use an image gadget and fake the alpha transparency by a mask image and combining the background
the problem then is how to get the background of the window.

Using the Canvas gadget to draw your own gadgets could be the answer. There are already a few gadgets coded on the forum, here is one:

http://www.purebasic.fr/english/viewtopic.php?f=5&t=48784