96 lines
1.7 KiB
C
96 lines
1.7 KiB
C
#include "evas_common.h"
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#include "evas_private.h"
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#include "Evas.h"
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Evas_List *
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evas_rects_return_difference_rects(int x, int y, int w, int h, int xx, int yy, int ww, int hh)
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{
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Evas_List *rects = NULL;
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Evas_Rectangle *r;
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if (!RECTS_INTERSECT(x, y, w, h, xx, yy, ww, hh))
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{
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NEW_RECT(r, x, y, w, h);
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if (r) rects = evas_list_append(rects, r);
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NEW_RECT(r, xx, yy, ww, hh);
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if (r) rects = evas_list_append(rects, r);
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}
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else
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{
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int x1[4], y1[4], i, j;
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Evas_List *rl = NULL, *rll;
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if (x < xx)
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{
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x1[0] = x;
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x1[1] = xx;
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}
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else
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{
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x1[0] = xx;
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x1[1] = x;
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}
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if ((x + w) < (xx + ww))
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{
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x1[2] = x + w;
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x1[3] = xx + ww;
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}
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else
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{
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x1[2] = xx + ww;
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x1[3] = x + w;
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}
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if (y < yy)
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{
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y1[0] = y;
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y1[1] = yy;
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}
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else
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{
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y1[0] = yy;
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y1[1] = y;
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}
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if ((y + h) < (yy + hh))
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{
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y1[2] = y + h;
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y1[3] = yy + hh;
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}
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else
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{
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y1[2] = yy + hh;
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y1[3] = y + h;
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}
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for (j = 0; j < 3; j++)
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{
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for (i = 0; i < 3; i++)
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{
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NEW_RECT(r, x1[i], y1[j], x1[i + 1] - x1[i], y1[j + 1] - y1[j]);
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if (r) rl = evas_list_append(rl, r);
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}
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}
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if (rl)
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{
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for (rll = rl; rll; rll = rll->next)
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{
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r = rll->data;
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if ((r->w > 0) && (r->h > 0))
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{
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int intsec1, intsec2;
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intsec1 = (RECTS_INTERSECT(r->x, r->y, r->w, r->h, x, y, w, h));
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intsec2 = (RECTS_INTERSECT(r->x, r->y, r->w, r->h, xx, yy, ww, hh));
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if (intsec1 ^ intsec2)
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rects = evas_list_append(rects, r);
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else
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free(r);
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}
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else
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free(r);
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}
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rl = evas_list_free(rl);
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}
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}
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return rects;
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}
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