Giacomo Tesio
e70feee4a3
With this commit all functions declared in libc.h have been renamed with the "jehanne_" prefix. This is done for several reason: - it removes conflicts during symbol resolution when linking standard C libraries like newlib or musl - it allows programs depending on a standard C library to directly link to a library depending on our non standard libc (eg libsec). To ease transiction two files are provided: - sys/include/lib9.h that can be included instead of <libc.h> to use the old names (via a simple set of macros) - sys/src/lib/c/lib9.c that can be compiled with a program where the macro provided by lib9.h are too dumb (see for example rc or grep). In the kernel port/lib.h has been modified accordingly and some of the functions it directly provides has been renamed too (eg malloc in qmalloc.c and print in devcons.c).
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
|
||
* This file is part of the UCB release of Plan 9. It is subject to the license
|
||
* terms in the LICENSE file found in the top-level directory of this
|
||
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
||
* part of the UCB release of Plan 9, including this file, may be copied,
|
||
* modified, propagated, or distributed except according to the terms contained
|
||
* in the LICENSE file.
|
||
*/
|
||
|
||
#include <u.h>
|
||
#include <lib9.h>
|
||
#include <draw.h>
|
||
|
||
Image*
|
||
allocimagemix(Display *d, uint32_t color1, uint32_t 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;
|
||
}
|
||
}
|