Mercurial > molko
diff libmlk-ui/mlk/ui/align.c @ 433:862b15c3a3ae
ui: cleanup hierarchy
author | David Demelier <markand@malikania.fr> |
---|---|
date | Sat, 15 Oct 2022 21:19:25 +0200 |
parents | src/libmlk-ui/ui/align.c@460c78706989 |
children | 773a082f0b91 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libmlk-ui/mlk/ui/align.c Sat Oct 15 21:19:25 2022 +0200 @@ -0,0 +1,75 @@ +/* + * align.h -- user interface alignment + * + * Copyright (c) 2020-2022 David Demelier <markand@malikania.fr> + * + * Permission to use, copy, modify, and/or distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include "align.h" + +#define SET(p, v) if (p) *p = v +#define CENTER(p, c, rs, es) if (p) (*p) = c + (rs / 2) - (es / 2) + +void +align(enum align align, + int *x, + int *y, + unsigned int w, + unsigned int h, + int px, + int py, + unsigned int pw, + unsigned int ph) +{ + switch (align) { + case ALIGN_CENTER: + CENTER(x, px, pw, w); + CENTER(y, py, ph, h); + break; + case ALIGN_TOP_LEFT: + SET(x, px); + SET(y, py); + break; + case ALIGN_TOP: + CENTER(x, px, pw, w); + SET(y, py); + break; + case ALIGN_TOP_RIGHT: + SET(x, px + pw - w); + SET(y, py); + break; + case ALIGN_RIGHT: + SET(x, px + pw - w); + CENTER(y, py, ph, h); + break; + case ALIGN_BOTTOM_RIGHT: + SET(x, px + pw - w); + SET(y, py + ph - h); + break; + case ALIGN_BOTTOM: + CENTER(x, px, pw, w); + SET(y, py + ph - h); + break; + case ALIGN_BOTTOM_LEFT: + SET(x, px); + SET(y, py + ph - h); + break; + case ALIGN_LEFT: + CENTER(y, py, ph, h); + SET(x, px); + break; + default: + break; + } +}