diff options
Diffstat (limited to 'src/libdraw/allocimagemix.c')
-rw-r--r-- | src/libdraw/allocimagemix.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/src/libdraw/allocimagemix.c b/src/libdraw/allocimagemix.c new file mode 100644 index 00000000..09d60ec9 --- /dev/null +++ b/src/libdraw/allocimagemix.c @@ -0,0 +1,43 @@ +#include <u.h> +#include <libc.h> +#include <draw.h> + +Image* +allocimagemix(Display *d, u32int color1, u32int 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; + } +} |