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#include "evas_common.h"
#if 0
Regionbuf *
evas_common_regionbuf_new(int w, int h)
{
Regionbuf *rb;
rb = calloc(1, sizeof(Regionbuf) + (h * sizeof(Regionspan)));
if (!rb) return NULL;
rb->spans = (Regionspan **)(rb + sizeof(Regionbuf));
rb->w = w;
rb->h = h;
return rb;
}
void
evas_common_regionbuf_free(Regionbuf *rb)
{
evas_common_regionbuf_clear(rb);
free(rb);
}
void
evas_common_regionbuf_clear(Regionbuf *rb)
{
int y;
for (y = 0; y < rb->h; y++)
{
while (rb->spans[y])
{
Regionspan *span;
span = rb->spans[y];
rb->spans[y] = eina_inlist_remove(rb->spans[y], rb->spans[y]);
free(span);
}
}
}
void
evas_common_regionbuf_span_add(Regionbuf *rb, int x1, int x2, int y)
{
Regionspan *span, *span2, *nspan, *sp_start, *sp_stop;
/* abort if outside */
if ((y < 0) ||
(y >= rb->h) ||
(x2 < 0) ||
(x1 >= rb->w)) return;
/* clip to horiz bounds */
if (x1 < 0) x1 = 0;
if (x2 < (rb->w - 1)) x2 = rb->w - 1;
sp_start = NULL;
sp_stop = NULL;
EINA_INLIST_FOREACH(rb->spans[y], span)
{
nspan = (Regionspan *)(EINA_INLIST_GET(span))->next;
/* we dont know what t do with the span yet */
if (!sp_start)
{
/* if new span starts before or on this span or just after
* with no gap */
if (x1 <= (span->x2 + 1))
sp_start = span;
/* if there is no next span */
if (!nspan)
{
sp_stop = span;
break;
}
/* if new span ends before the next span starts with a gap of
* 1 pixel (or more) */
else if (x2 < (nspan->x1 - 1))
{
sp_stop = span;
break;
}
}
/* we already know it already starts before or in sp_start */
else
{
/* there is no span after this one, so this has to be the stop */
if (!nspan)
{
sp_stop = span;
break;
}
/* if new span ends before the next span starts with a gap of
* 1 pixel (or more) */
else if (x2 < (nspan->x1 - 1))
{
sp_stop = span;
break;
}
}
}
/* sp_start is where the new span starts in or before */
/* sp_stop is where the new span stops in or after */
if ((sp_start) && (sp_stop))
{
/* same start and stop */
if (sp_start == sp_stop)
{
if (x2 < (sp_start->x1 - 1))
{
span2 = calloc(1, sizeof(Regionspan));
span2->x1 = x1;
span2->x2 = x2;
rb->spans[y] = eina_inlist_prepend_relative(rb->spans[y], span2, sp_start);
return;
}
if (x1 < sp_start->x1)
sp_start->x1 = x1;
if (x2 > sp_start->x2)
sp_start->x2 = x2;
return;
}
else
{
Eina_Inlist *l;
/* remove all nodes after sp_start and before_sp_stop because
* the new */
for (l = (EINA_INLIST_GET(sp_start))->next; l != EINA_INLIST_GET(sp_stop);)
{
span = (Regionspan *)l;
l = l->next;
rb->spans[y] = eina_inlist_remove(rb->spans[y], span);
free(span);
}
/* remove the end span */
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_stop);
/* if the new span is before the start span - extend */
if (x1 < sp_start->x1)
sp_start->x1 = x1;
/* if it goes beyond the stop span - extend stop span */
if (x2 > sp_stop->x2)
sp_stop->x2 = x2;
/* extend start span to stop span */
sp_start->x2 = sp_stop->x2;
/* don't need stop span anymore */
free(sp_stop);
return;
}
}
/* no start AND stop... just append */
span2 = calloc(1, sizeof(Regionspan));
span2->x1 = x1;
span2->x2 = x2;
rb->spans[y] = eina_inlist_append(rb->spans[y], span2);
}
void
evas_common_regionbuf_span_del(Regionbuf *rb, int x1, int x2, int y)
{
/* FIXME: del span */
Regionspan *span, *span2, *nspan, *sp_start, *sp_stop;
/* abort if outside */
if ((y < 0) ||
(y >= rb->h) ||
(x2 < 0) ||
(x1 >= rb->w)) return;
/* clip to horiz bounds */
if (x1 < 0) x1 = 0;
if (x2 < (rb->w - 1)) x2 = rb->w - 1;
sp_start = NULL;
sp_stop = NULL;
EINA_INLIST_FOREACH(rb->spans[y], span)
{
nspan = (Regionspan *)(EINA_INLIST_GET(l))->next;
/* we dont know what t do with the span yet */
if (!sp_start)
{
/* if new span starts before or on this span or just after
* with no gap */
if (x1 <= (span->x2))
sp_start = span;
/* if there is no next span */
if (!nspan)
{
sp_stop = span;
break;
}
/* if new span ends before the next span starts with a gap of
* 1 pixel (or more) */
else if (x2 < nspan->x1)
{
sp_stop = span;
break;
}
}
/* we already know it already starts before or in sp_start */
else
{
/* there is no span after this one, so this has to be the stop */
if (!nspan)
{
sp_stop = span;
break;
}
/* if new span ends before the next span starts with a gap of
* 1 pixel (or more) */
else if (x2 < nspan->x1)
{
sp_stop = span;
break;
}
}
}
/* sp_start is where the new span starts in or before */
/* sp_stop is where the new span stops in or after */
if ((sp_start) && (sp_stop))
{
/* same start and stop */
if (sp_start == sp_stop)
{
/* if it ends before this the span start starts... return */
if (x2 < sp_start->x1)
return;
/* it starts on or before this span */
else if (x1 <= sp_start->x1)
{
/* right edge is within the span */
if (x2 < sp_start->x2)
{
sp_start->x2 = x2;
return;
}
else
{
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_start);
return;
}
}
/* it ends on or after the end of this span */
else if (x2 >= sp_start->x2)
{
/* it starts after the start */
if (x1 > sp_start->x1)
{
sp_start->x1 = x1;
return;
}
/* remove it all */
else
{
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_start);
return;
}
return;
}
/* this breaks the span into 2 */
else
{
span2 = calloc(1, sizeof(Regionspan));
span2->x1 = sp_start->x1;
span2->x2 = x1 - 1;
rb->spans[y] = eina_inlist_prepend_relative(rb->spans[y], span2, sp_start);
sp_start->x1 = x2 + 1;
return;
}
}
else
{
Eina_Inlist *l;
/* remove all nodes after sp_start and before_sp_stop because
* the new */
for (l = (EINA_INLIST_GET(sp_start))->next; l != EINA_INLIST_GET(sp_stop);)
{
span = (Regionspan *)l;
l = l->next;
rb->spans[y] = eina_inlist_remove(rb->spans[y], span);
free(span);
}
/* all of the start span is cut out */
if (x1 <= sp_start->x1)
{
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_start);
free(sp_start);
}
/* chup it off at the new span start */
else
sp_start->x2 = x1 - 1;
/* all of the end span is cut out */
if (x2 >= sp_stop->x2)
{
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_stop);
free(sp_stop);
}
/* chop it up at the end */
else
sp_stop->x1 = x2 + 1;
return;
}
}
}
Tilebuf_Rect *
evas_common_regionbuf_rects_get(Regionbuf *rb)
{
Tilebuf_Rect *rects = NULL, *r;
int y;
/* FIXME: take spans, make rects */
for (y = 0; y < rb->h; y++)
{
Regionspan *sp_start;
Eina_Inlist *l, *ll;
for (l = EINA_INLIST_GET(rb->spans[y]); l;)
{
Regionspan *span;
int yy;
sp_start = (Regionspan *)l;
l = l->next;
rb->spans[y] = eina_inlist_remove(rb->spans[y], sp_start);
for (yy = y + 1; yy < rb->h; yy++)
{
int match = 0;
for (ll = EINA_INLIST_GET(rb->spans[yy]); ll;)
{
span = (Regionspan *)ll;
ll = ll->next;
if (span->x1 == sp_start->x1)
{
if ((span->x1 != sp_start->x1) ||
(span->x2 != sp_start->x2))
{
goto coallate;
}
match = 1;
rb->spans[yy] = eina_inlist_remove(rb->spans[yy], span);
free(span);
}
}
if (!match) goto coallate;
}
coallate:
r = calloc(1, sizeof(Tilebuf_Rect));
r->x = sp_start->x1;
r->y = y;
r->w = sp_start->x2 - sp_start->x1 + 1;
r->h = yy - y;
rects = eina_inlist_append(rects, r);
free(sp_start);
}
}
evas_common_regionbuf_clear(rb);
return rects;
}
#endif
|
