mirror of
https://github.com/9fans/plan9port.git
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44 lines
926 B
C
44 lines
926 B
C
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#include <u.h>
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#include <libc.h>
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#include <draw.h>
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Image*
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allocimagemix(Display *d, u32int color1, u32int color3)
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{
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Image *t, *b;
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static Image *qmask;
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if(qmask == nil)
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qmask = allocimage(d, Rect(0,0,1,1), GREY8, 1, 0x3F3F3FFF);
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if(d->screenimage->depth <= 8){ /* create a 2×2 texture */
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t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 0, color1);
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if(t == nil)
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return nil;
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b = allocimage(d, Rect(0,0,2,2), d->screenimage->chan, 1, color3);
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if(b == nil){
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freeimage(t);
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return nil;
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}
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draw(b, Rect(0,0,1,1), t, nil, ZP);
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freeimage(t);
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return b;
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}else{ /* use a solid color, blended using alpha */
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t = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color1);
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if(t == nil)
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return nil;
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b = allocimage(d, Rect(0,0,1,1), d->screenimage->chan, 1, color3);
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if(b == nil){
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freeimage(t);
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return nil;
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}
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draw(b, b->r, t, qmask, ZP);
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freeimage(t);
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return b;
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}
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}
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