Thanks hhenne
I'm trying the following
Paint invert = new Paint();
invert.setStyle(Paint.Style.FILL);
invert.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.XOR));
pictCanvas.drawRect(0, 0, 1170, 800, invert);
image.invalidate();
Not having any success, can you see where I'm making a mistake ?
Thanks
Barry
On 02/08/2012 04:07 AM, Raghav Sood wrote:
On Wed, Feb 8, 2012 at 12:48 PM, hhenne <[email protected]
<mailto:[email protected]>> wrote:
You can make a Paint and setXfermode to XOR (PixelXorXfermode) and the
draw a solid rect on the bitmap. It will invert every bit - so when
you do it once more you are back to non-inverted. I am doing so in my
keyboard (http://www.maxikeys.com) to invert pressed keys - the room
between the keys have the color 50% grey, which will not change, when
being inverted.
Hardy Henneberg
On Feb 7, 10:09 pm, JackN <[email protected]
<mailto:[email protected]>> wrote:
> I don't know if there is 'negative' function, but just go
through the
> pixels and transform them to your desire.
>
> On Feb 7, 7:18 am, New Developer <[email protected]
<mailto:[email protected]>> wrote:
>
>
>
>
>
>
>
> > Is there a process/function to invert the colors of an entire
bitmap or
> > canvas ?
> > Not just a black and white image that becomes white and black
> > But a full color image, where the color is inverted ?
>
> > Thanks in advance
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