Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <draw.h>

Image*
allocimagemix(Display *d, ulong color1, ulong color3)
{
        Image *t, *b;
        static Image *qmask;

        if(qmask == nil)
                qmask = allocimage(d, Rect(0,0,1,1), GREY8, 1, 0x3F3F3FFF);
                
        if(d->screenimage->depth <= 8){ /* create a 2×2 texture */
                t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 0, color1);
                if(t == nil)
                        return nil;

                b = allocimage(d, Rect(0,0,2,2), d->screenimage->chan, 1, color3);
                if(b == nil){
                        freeimage(t);
                        return nil;
                }

                draw(b, Rect(0,0,1,1), t, nil, ZP);
                freeimage(t);
                return b;
        }else{  /* use a solid color, blended using alpha */
                t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color1);
                if(t == nil)
                        return nil;

                b = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color3);
                if(b == nil){
                        freeimage(t);
                        return nil;
                }

                draw(b, b->r, t, qmask, ZP);
                freeimage(t);
                return b;
        }
}