Commit graph

8 commits

Author SHA1 Message Date
BurnZeZ bf4f158707 memdraw(2): remove references to iprint() 2019-05-11 15:28:18 +00:00
stanley lieber e35616cb66 /sys/man/*/*: fix perms (sorry) 2017-12-11 19:58:06 -05:00
stanley lieber d057d67bed /sys/lib/rootstub 2017-12-11 19:34:15 -05:00
BurnZeZ 63abfb5056 manpage references/typos 2016-03-01 15:24:07 -05:00
cinap_lenrek 71dbddef16 draw: fix drawing of replicated source image on memlayer with a clip rectangle
when a replicated source image with a clipr with clipr.min > Pt(0, 0),
drawclip() would properly translate the src->clipr on the dstr
but then clamp the source rectangle back on src->r.

while traversing down multiple layers, this would cause the translation to
be applied multiple times to the dst rectangle giving the wrong image result.

this change adds a new drawclipnorepl() function that avoids the clamping
of source and mask rectangles to src->r and mask->r. this is then used in
libmemlayer.

the final memimagedraw() call will call drawclip() which will do the final
claming.

a testcase is provided:

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

Image *blue;
Image *red;

void
main(int, char *argv[])
{
	Image *i;

	if(initdraw(nil, nil, argv[0]) < 0)
		sysfatal("initdraw: %r");
	i = allocimage(display, screen->r, screen->chan, 1, DWhite);

	red = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DRed);
	blue = allocimage(display, Rect(0,0,1,1), screen->chan, 1, DPaleblue);
	replclipr(red, 1, Rect(10, 10, 110, 110));
	replclipr(blue, 1, Rect(11, 11, 111, 111));

	/* draw on non-layer, works correctly */
	draw(i, i->r, red, nil, ZP);
	draw(i, i->r, blue, nil, ZP);
	draw(screen, screen->r, i, nil, i->r.min);
	flushimage(display, 1);

	/* draw on (screen) layer is too far to the right */
	draw(screen, screen->r, red, nil, ZP);
	draw(screen, screen->r, blue, nil, ZP);
	flushimage(display, 1);

	for(;;){
		sleep(1000);
	}
}
2013-12-09 03:35:01 +01:00
cinap_lenrek d56a6fadc5 libmemdraw: change memimageinit() to return integer error (for kernel), minor cleanups 2013-11-12 21:42:05 +01:00
Taru Karttunen a9060cc06b Import sources from 2011-03-30 iso image - lib 2011-03-30 19:35:09 +03:00
Taru Karttunen b41b903422 Import sources from 2011-03-30 iso image - sys/man 2011-03-30 16:49:47 +03:00