Wednesday, February 8, 2012

Re: [android-developers] Re: Invert and entire Bitmap



On Wed, Feb 8, 2012 at 12:48 PM, hhenne <hhenne@gmail.com> 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 <j...@jacknorth.com> 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 <secur...@isscp.com> wrote:
>
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> > 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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Raghav Sood

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