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author | rsc <devnull@localhost> | 2003-09-30 17:47:42 +0000 |
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committer | rsc <devnull@localhost> | 2003-09-30 17:47:42 +0000 |
commit | ed7c8e8d02c02bdbff1e88a6d8d1419f39af48ad (patch) | |
tree | ebcd32d20b0df2584bce713fefa87620ecd1cce7 /src/libdraw/allocimagemix.c | |
parent | b2cfc4e2e71d0f0a5113ddfbd93c8285cc4d74e4 (diff) | |
download | plan9port-ed7c8e8d02c02bdbff1e88a6d8d1419f39af48ad.tar.gz plan9port-ed7c8e8d02c02bdbff1e88a6d8d1419f39af48ad.tar.bz2 plan9port-ed7c8e8d02c02bdbff1e88a6d8d1419f39af48ad.zip |
Initial import.
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; + } +} |