src/lib/canvas/evas_rectangle.c

   1 #include "evas_common.h"
   2 #include "evas_private.h"
   3
   4 void
   5 evas_rects_return_difference_rects(Evas_Rectangles *rects, int x, int y, int w, int h, int xx, int yy, int ww, int hh)
   6 {
   7    unsigned int available = 0;
   8
   9    if (!RECTS_INTERSECT(x, y, w, h, xx, yy, ww, hh))
  10      {
  11         evas_add_rect(rects, x, y, w, h);
  12         evas_add_rect(rects, xx, yy, ww, hh);
  13      }
  14    else
  15      {
  16         int x1[4], y1[4], i, j;
  17         Evas_Rectangles tmp = { 0, 0, NULL };
  18
  19         if (x < xx)
  20           {
  21              x1[0] = x;
  22              x1[1] = xx;
  23           }
  24         else
  25           {
  26              x1[0] = xx;
  27              x1[1] = x;
  28           }
  29         if ((x + w) < (xx + ww))
  30           {
  31              x1[2] = x + w;
  32              x1[3] = xx + ww;
  33           }
  34         else
  35           {
  36              x1[2] = xx + ww;
  37              x1[3] = x + w;
  38           }
  39         if (y < yy)
  40           {
  41              y1[0] = y;
  42              y1[1] = yy;
  43           }
  44         else
  45           {
  46              y1[0] = yy;
  47              y1[1] = y;
  48           }
  49         if ((y + h) < (yy + hh))
  50           {
  51              y1[2] = y + h;
  52              y1[3] = yy + hh;
  53           }
  54         else
  55           {
  56              y1[2] = yy + hh;
  57              y1[3] = y + h;
  58           }
  59         for (j = 0; j < 3; j++)
  60           {
  61              for (i = 0; i < 3; i++)
  62                {
  63                   int intsec1, intsec2;
  64                   int tx, ty, tw, th;
  65
  66                   tx = x1[i];
  67                   ty = y1[j];
  68                   tw = x1[i + 1] - x1[i];
  69                   th = y1[j + 1] - y1[j];
  70
  71                   intsec1 = (RECTS_INTERSECT(tx, ty, tw, th, x, y, w, h));
  72                   intsec2 = (RECTS_INTERSECT(tx, ty, tw, th, xx, yy, ww, hh));
  73                   if (intsec1 ^ intsec2)
  74                     {
  75                        evas_add_rect(rects, tx, ty, tw, th);
  76                     }
  77                }
  78           }
  79 /*      if (tmp.count > 0) */
  80 /*        { */
  81 /*           unsigned int i; */
  82
  83 /*           for (i = 0; i < tmp.count; ++i) */
  84 /*             { */
  85 /*                if ((tmp.array[i].w > 0) && (tmp.array[i].h > 0)) */
  86 /*                  { */
  87 /*                     int intsec1, intsec2; */
  88
  89 /*                     intsec1 = (RECTS_INTERSECT(tmp.array[i].x, tmp.array[i].y, tmp.array[i].w, tmp.array[i].h, x, y, w, h)); */
  90 /*                     intsec2 = (RECTS_INTERSECT(tmp.array[i].x, tmp.array[i].y, tmp.array[i].w, tmp.array[i].h, xx, yy, ww, hh)); */
  91 /*                     if (intsec1 ^ intsec2) */
  92 /*                       { */
  93 /*                          evas_add_rect(rects, tmp.array[i].x, tmp.array[i].y, tmp.array[i].w, tmp.array[i].h); */
  94 /*                       } */
  95 /*                  } */
  96 /*             } */
  97 /*           free(tmp.array); */
  98 /*        } */
  99
 100      }
 101 }