Yay !! :)

I'll make some changes locally here (wrt the new wayland compositor) and 
using eina_tiler. Assuming all goes well, I'll put those in my dev 
branch when ready.

Cheers,
devilhorns

On 28/05/14 03:50, MinJeong Kim wrote:
> raster pushed a commit to branch master.
>
> http://git.enlightenment.org/core/efl.git/commit/?id=61cecf1f3f68f5850c58c3abdb4a37a1c158cc10
>
> commit 61cecf1f3f68f5850c58c3abdb4a37a1c158cc10
> Author: MinJeong Kim <[email protected]>
> Date:   Wed May 28 16:34:05 2014 +0900
>
>      eina-tiler:add union, subtract, intersection, equal apis for tilers
>
>      Summary:
>      Support union, subtract, intersection, equal(comparison) between tilers.
>      @feature
>
>      Test Plan: Test with added test case(src/tests/eina/eina_test_tiler.c) 
> and the example(src/examples/eina/eina_tiler_02.c)
>
>      Reviewers: gwanglim, devilhorns, raster, zmike, cedric
>
>      CC: cedric
>
>      Differential Revision: https://phab.enlightenment.org/D880
> ---
>   src/examples/eina/eina_tiler_02.c | 354 
> ++++++++++++++++++++++++++++++++++++++
>   src/lib/eina/eina_tiler.c         | 206 ++++++++++++++++++++++
>   src/lib/eina/eina_tiler.h         |  49 ++++++
>   src/tests/eina/eina_test_tiler.c  | 107 ++++++++++++
>   4 files changed, 716 insertions(+)
>
> diff --git a/src/examples/eina/eina_tiler_02.c 
> b/src/examples/eina/eina_tiler_02.c
> new file mode 100644
> index 0000000..2e80aaa
> --- /dev/null
> +++ b/src/examples/eina/eina_tiler_02.c
> @@ -0,0 +1,354 @@
> +//Compile with:
> +//gcc eina_tiler_02.c -o eina_tiler_02 `pkg-config --cflags --libs 
> ecore-evas ecore evas eina`
> +
> +#include <Ecore_Evas.h>
> +#include <Ecore.h>
> +#include <Evas.h>
> +#include <Eina.h>
> +
> +#define WIN_W    (810)
> +#define WIN_H    (280)
> +
> +#define TILER1_X (30)
> +#define TILER1_Y (30)
> +#define TILER2_X (530)
> +#define TILER2_Y (30)
> +#define TILER_W  (250)
> +#define TILER_H  (250)
> +#define RESULT_X (280)
> +#define RESULT_Y (30)
> +
> +static Eina_Tiler *tiler1, *tiler2;
> +static Eina_List *t1_objs, *t2_objs, *tiler_objs;
> +static Evas *evas;
> +static Evas_Object *bg;
> +
> +static unsigned int cur_method;
> +typedef enum {
> +     METHOD_UNION = 0,
> +     METHOD_SUBTRACT,
> +     METHOD_INTERSECTION,
> +}Current_Method;
> +
> +static unsigned int rect_idx =0, rect_count = 4;
> +static const Eina_Rectangle
> +   rects[4][2][2] = {
> +   {{{40, 0, 80, 250}},
> +    {{0, 150, 250, 70}, {0, 20, 250, 70}}},
> +
> +    {{{20, 20, 65, 150},  {135, 80, 65, 150}},
> +     {{20, 80, 65, 150},  {135, 20, 65, 150}}},
> +
> +    {{{20, 20, 210, 210}},
> +     {{80, 80, 90, 90}}},
> +
> +    {{{0, 0, 150, 90}, {180, 180, 70, 70}},
> +     {{70, 70, 120, 120}}}
> +};
> +
> +static const char*
> + Methods[3] = {
> +  "UNION 1+2",
> +  "SUBTRACT 1-2",
> +  "INTERSECTION 1&2"
> +};
> +
> +static unsigned int tile_idx =0, tile_count = 5;
> +static const unsigned int
> +   tilesize[5] = {
> +        32,
> +        16,
> +        8,
> +        4,
> +        1
> +};
> +
> +static const char commands[] = \
> +  "commands are:\n"
> +  "\tn - next arrangement \n"
> +  "\tu - get union\n"
> +  "\ts - get subtract\n"
> +  "\ti - get intersection\n"
> +  "\tt - chage tile size ([32], 16, 8, 4) \n"
> +  "\tEsc - Exit\n";
> +
> +
> +static Evas_Object *
> +add_text(const char *text, int x, int y, int w)
> +{
> +   Evas_Object *o = evas_object_text_add(evas);
> +   evas_object_color_set(o, 0, 0, 0, 255);
> +   evas_object_move(o, x, y);
> +   evas_object_text_font_set(o, "Sans", 20);
> +   evas_object_text_text_set(o, text);
> +   evas_object_show(o);
> +
> +   return o;
> +}
> +
> +void tiler_calc()
> +{
> +   Eina_Tiler *tiler;
> +   Eina_Iterator *itr;
> +   Evas_Object *o;
> +   Eina_Rectangle *rect;
> +   int i = 0;
> +
> +   /* clear evas rectangles */
> +   if (tiler_objs)
> +     {
> +        EINA_LIST_FREE(tiler_objs, o)
> +          {
> +             evas_object_hide(o);
> +             evas_object_del(o);
> +          }
> +     }
> +
> +   tiler = eina_tiler_new(TILER_W, TILER_H);
> +   eina_tiler_tile_size_set(tiler,  tilesize[tile_idx], tilesize[tile_idx]);
> +
> +   /* calculate with tiler1 and tiler2 */
> +   switch(cur_method)
> +     {
> +      case METHOD_UNION:
> +         eina_tiler_union(tiler, tiler1);
> +         eina_tiler_union(tiler, tiler2);
> +         break;
> +      case METHOD_SUBTRACT:
> +         eina_tiler_union(tiler, tiler1);
> +         eina_tiler_subtract(tiler, tiler2);
> +         break;
> +      case METHOD_INTERSECTION:
> +         tiler = eina_tiler_intersection(tiler1, tiler2);
> +         break;
> +     }
> +
> +   if (tiler)
> +     {
> +        /* draw rects of result tiler */
> +        itr = eina_tiler_iterator_new(tiler);
> +        EINA_ITERATOR_FOREACH(itr, rect)
> +          {
> +             fprintf(stdout, "Result Rect [%d] (%d, %d) (%d x %d)\n", i++, 
> rect->x, rect->y, rect->w, rect->h);
> +
> +             o = evas_object_rectangle_add(evas);
> +             evas_object_color_set(o, 0, 255, 0, 255);
> +             evas_object_resize(o, rect->w, rect->h);
> +             evas_object_move(o, RESULT_X + rect->x, RESULT_Y + rect->y);
> +             evas_object_show(o);
> +             tiler_objs = eina_list_append(tiler_objs, o);
> +          }
> +        eina_iterator_free(itr);
> +
> +        o = add_text(Methods[cur_method], RESULT_X, 0, TILER_W);
> +        tiler_objs = eina_list_append(tiler_objs, o);
> +        eina_tiler_free(tiler);
> +     }
> +}
> +
> +void rect_update()
> +{
> +   Evas_Object *o;
> +   Eina_Rectangle *rect;
> +   Eina_Iterator *itr;
> +   int i = 0;
> +
> +   if (t1_objs)
> +     {
> +        EINA_LIST_FREE(t1_objs, o)
> +          {
> +             evas_object_hide(o);
> +             evas_object_del(o);
> +          }
> +     }
> +   if (t2_objs)
> +     {
> +        EINA_LIST_FREE(t2_objs, o)
> +          {
> +             evas_object_hide(o);
> +             evas_object_del(o);
> +          }
> +     }
> +
> +   eina_tiler_clear(tiler1);
> +   eina_tiler_clear(tiler2);
> +
> +   eina_tiler_tile_size_set(tiler1, tilesize[tile_idx], tilesize[tile_idx]);
> +   eina_tiler_tile_size_set(tiler2, tilesize[tile_idx], tilesize[tile_idx]);
> +
> +   for (i = 0; i < 2; i ++)
> +     {
> +        if (rects[rect_idx][0][i].w > 0 && rects[rect_idx][0][i].w > 0)
> +          eina_tiler_rect_add(tiler1, &rects[rect_idx][0][i]);
> +        if (rects[rect_idx][1][i].w > 0 && rects[rect_idx][1][i].w > 0)
> +          eina_tiler_rect_add(tiler2, &rects[rect_idx][1][i]);
> +     }
> +
> +   /* draw rects of tiler1 */
> +   itr = eina_tiler_iterator_new(tiler1);
> +   EINA_ITERATOR_FOREACH(itr, rect)
> +     {
> +        o = evas_object_rectangle_add(evas);
> +        evas_object_color_set(o, 255, 0, 0, 255);
> +        evas_object_resize(o, rect->w, rect->h);
> +        evas_object_move(o, TILER1_X + rect->x, TILER1_Y + rect->y);
> +        evas_object_show(o);
> +        t1_objs = eina_list_append(t1_objs, o);
> +     }
> +   eina_iterator_free(itr);
> +
> +   /* draw rects of tiler2 */
> +   itr = eina_tiler_iterator_new(tiler2);
> +   EINA_ITERATOR_FOREACH(itr, rect)
> +     {
> +        o = evas_object_rectangle_add(evas);
> +        evas_object_color_set(o, 0, 0, 255, 255);
> +        evas_object_resize(o, rect->w, rect->h);
> +        evas_object_move(o, TILER2_X + rect->x, TILER2_Y + rect->y);
> +        evas_object_show(o);
> +        t2_objs = eina_list_append(t2_objs, o);
> +     }
> +   eina_iterator_free(itr);
> +
> +   tiler_calc();
> +}
> +
> +static void
> +_on_key_down(void *data,
> +             Evas *evas EINA_UNUSED,
> +             Evas_Object *o EINA_UNUSED,
> +             void *einfo)
> +{
> +  Evas_Event_Key_Down *ev;
> +  int x,y;
> +
> +  ev = (Evas_Event_Key_Down *)einfo;
> +
> +  if(strcmp(ev->key,"Escape") == 0)
> +    {
> +       ecore_main_loop_quit();
> +    }
> +  else if(strcmp(ev->key, "u") == 0)
> +    {
> +       if (cur_method == METHOD_UNION)
> +         return;
> +
> +       cur_method = METHOD_UNION;
> +    }
> +  else if(strcmp(ev->key, "s") == 0)
> +    {
> +       if (cur_method == METHOD_SUBTRACT)
> +         return;
> +
> +       cur_method = METHOD_SUBTRACT;
> +    }
> +  else if(strcmp(ev->key, "i") == 0)
> +    {
> +       if (cur_method == METHOD_INTERSECTION)
> +         return;
> +
> +       cur_method = METHOD_INTERSECTION;
> +    }
> +  else if(strcmp(ev->key, "t") == 0)
> +    {
> +       /* change tiler tile size */
> +       tile_idx ++;
> +       tile_idx %= tile_count;
> +       fprintf(stdout, "Tiler Size : %d\n", tilesize[tile_idx]);
> +
> +       rect_update();
> +       return;
> +    }
> +  else if(strcmp(ev->key, "n") == 0)
> +    {
> +       /* change arrangement of tilers's rects */
> +       rect_idx ++;
> +       rect_idx %= rect_count;
> +       rect_update();
> +       return;
> +    }
> +  else
> +    {
> +       fprintf(stdout, "Key %s not supported.\nCommands:%s", ev->key, 
> commands);
> +       return;
> +    }
> +
> +  tiler_calc();
> +}
> +
> +int
> +main(int argc, char *argv[])
> +{
> +   Ecore_Evas *ee;
> +   Evas_Object *o;
> +   int i;
> +   Eina_Rectangle *rect;
> +   Eina_Iterator *itr;
> +
> +   fprintf(stdout, "Usage.\nCommands:%s", commands);
> +
> +   ecore_evas_init();
> +   ecore_init();
> +   evas_init();
> +   eina_init();
> +
> +   ee = ecore_evas_new(NULL, 0, 0, WIN_W, WIN_H, NULL);
> +   if (!ee)
> +     {
> +        fputs("ERROR: Could not create window. Check ecore-evas install.\n",
> +              stderr);
> +        goto end;
> +     }
> +
> +   evas = ecore_evas_get(ee);
> +
> +   /* window bg */
> +   o = evas_object_rectangle_add(evas);
> +   evas_object_color_set(o, 255, 255, 255, 255);
> +   evas_object_resize(o, WIN_W, WIN_H);
> +   evas_object_show(o);
> +   evas_object_focus_set(o, EINA_TRUE);
> +   bg = o;
> +
> +   /* tiler1 bg */
> +   o = evas_object_rectangle_add(evas);
> +   evas_object_color_set(o, 0, 0, 0, 255);
> +   evas_object_resize(o, TILER_W, TILER_H);
> +   evas_object_move(o, TILER1_X, TILER1_Y);
> +   evas_object_show(o);
> +
> +   /* tiler2 bg */
> +   o = evas_object_rectangle_add(evas);
> +   evas_object_color_set(o, 0, 0, 0, 255);
> +   evas_object_resize(o, TILER_W, TILER_H);
> +   evas_object_move(o, TILER2_X, TILER2_Y);
> +   evas_object_show(o);
> +
> +   add_text("Tiler1", TILER1_X, 0, TILER_W);
> +   add_text("Tiler2", TILER2_X, 0, TILER_W);
> +
> +   tiler1 = eina_tiler_new(TILER_W, TILER_H);
> +   tiler2 = eina_tiler_new(TILER_W, TILER_H);
> +
> +   rect_update();
> +
> +   evas_object_event_callback_add(bg, EVAS_CALLBACK_KEY_DOWN, _on_key_down, 
> NULL);
> +
> +   ecore_evas_show(ee);
> +   ecore_main_loop_begin();
> +
> +   eina_list_free(tiler_objs);
> +   eina_list_free(t1_objs);
> +   eina_list_free(t2_objs);
> +   eina_tiler_free(tiler1);
> +   eina_tiler_free(tiler2);
> +   ecore_evas_free(ee);
> +
> + end:
> +   eina_shutdown();
> +   evas_shutdown();
> +   ecore_shutdown();
> +   ecore_evas_shutdown();
> +
> +   return 0;
> +}
> diff --git a/src/lib/eina/eina_tiler.c b/src/lib/eina/eina_tiler.c
> index 0301737..275ff7b 100644
> --- a/src/lib/eina/eina_tiler.c
> +++ b/src/lib/eina/eina_tiler.c
> @@ -1347,6 +1347,212 @@ EAPI Eina_Iterator *eina_tiler_iterator_new(const 
> Eina_Tiler *t)
>      return &it->iterator;
>   }
>
> +EAPI Eina_Bool
> +eina_tiler_union(Eina_Tiler *dst,
> +                 Eina_Tiler *src)
> +{
> +   Eina_Iterator *itr;
> +   Eina_Rectangle *rect, _rect;
> +
> +   if ((!src) || (!dst))
> +     return EINA_FALSE;
> +
> +   EINA_MAGIC_CHECK_TILER(src, EINA_FALSE);
> +   EINA_MAGIC_CHECK_TILER(dst, EINA_FALSE);
> +
> +   if ((src->area.w <= 0) || (src->area.h <=0))
> +     return EINA_FALSE;
> +
> +   dst->area.w = MAX(src->area.w, dst->area.w);
> +   dst->area.h = MAX(src->area.h, dst->area.h);
> +
> +   itr = eina_tiler_iterator_new(src);
> +   if (!itr)
> +     return EINA_FALSE;
> +
> +   EINA_ITERATOR_FOREACH(itr, rect)
> +     {
> +        _rect = *rect;
> +        if (src->rounding)
> +          {
> +             _rect.w -= 1;
> +             _rect.h -= 1;
> +          }
> +        _splitter_rect_add(dst, &_rect);
> +     }
> +   eina_iterator_free(itr);
> +
> +   if (rect)
> +     dst->last.add = *rect;
> +
> +   return EINA_TRUE;
> +}
> +
> +EAPI Eina_Bool
> +eina_tiler_subtract(Eina_Tiler *dst,
> +                    Eina_Tiler *src)
> +{
> +   Eina_Iterator *itr;
> +   Eina_Rectangle *rect, _rect;
> +
> +   if ((!src) || (!dst))
> +     return EINA_FALSE;
> +
> +   EINA_MAGIC_CHECK_TILER(src, EINA_FALSE);
> +   EINA_MAGIC_CHECK_TILER(dst, EINA_FALSE);
> +
> +   if ((src->area.w <= 0) || (src->area.h <= 0))
> +     return EINA_FALSE;
> +
> +   itr = eina_tiler_iterator_new(src);
> +   if (!itr)
> +     return EINA_FALSE;
> +
> +   EINA_ITERATOR_FOREACH(itr, rect)
> +     {
> +        _rect = *rect;
> +        if (src->rounding)
> +          {
> +             _rect.w -= 1;
> +             _rect.h -= 1;
> +          }
> +        _splitter_rect_del(dst, &_rect);
> +     }
> +   eina_iterator_free(itr);
> +
> +   if (rect)
> +     dst->last.del = *rect;
> +
> +   return EINA_TRUE;
> +}
> +
> +EAPI Eina_Tiler *
> +eina_tiler_intersection(Eina_Tiler *t1,
> +                        Eina_Tiler *t2)
> +{
> +   Eina_Tiler *t;
> +   int w, h;
> +
> +   Eina_Iterator *itr1, *itr2;
> +   Eina_Rectangle rect, *rect1, *rect2;
> +
> +   EINA_MAGIC_CHECK_TILER(t1, NULL);
> +   EINA_MAGIC_CHECK_TILER(t2, NULL);
> +
> +   if (!(eina_rectangles_intersect(&t1->area, &t2->area)))
> +     return NULL;
> +
> +   w = MIN(t1->area.w, t2->area.w);
> +   h = MIN(t1->area.h, t2->area.h);
> +   t = eina_tiler_new(w, h);
> +
> +   itr1 = eina_tiler_iterator_new(t1);
> +   itr2 = eina_tiler_iterator_new(t2);
> +
> +   if ((!eina_iterator_next(itr1, (void**)(void*)(&rect1))) && (!rect1))
> +     return NULL;
> +   if ((!eina_iterator_next(itr2, (void**)(void*)(&rect2))) && (!rect2))
> +     return NULL;
> +
> +   while((rect1) && (rect2))
> +     {
> +        if (eina_rectangles_intersect(rect1, rect2))
> +          {
> +             rect.x = MAX(rect1->x, rect2->x);
> +             rect.y = MAX(rect1->y, rect2->y);
> +             rect.w = MIN(rect1->x + rect1->w, rect2->x + rect2->w) - rect.x;
> +             rect.h = MIN(rect1->y + rect1->h, rect2->y + rect2->h) - rect.y;
> +
> +             if ((t1->rounding) || (t2->rounding))
> +               {
> +                  rect.w -= 1;
> +                  rect.h -= 1;
> +               }
> +
> +             _splitter_rect_add(t, &rect);
> +
> +             t->last.add = rect;
> +          }
> +
> +        if (rect1->x + rect1->w  < rect2->x + rect2->w)
> +          {
> +             if(eina_iterator_next(itr1, (void**)&rect1))
> +               continue;
> +          }
> +        else if (rect1->x + rect1->w > rect2->x + rect2->w)
> +          {
> +             if (eina_iterator_next(itr2, (void**)&rect2))
> +               continue;
> +          }
> +
> +        if (eina_iterator_next(itr1, (void**)&rect1))
> +          continue;
> +        if (eina_iterator_next(itr2, (void**)&rect2))
> +          continue;
> +
> +        break;
> +     }
> +
> +   eina_iterator_free(itr1);
> +   eina_iterator_free(itr2);
> +
> +   return t;
> +}
> +
> +EAPI Eina_Bool
> +eina_tiler_equal(Eina_Tiler *t1,
> +                 Eina_Tiler *t2)
> +{
> +   Eina_Iterator  *itr1, *itr2;
> +   Eina_Rectangle *rect1, *rect2;
> +   Eina_Bool      next_t1 = EINA_FALSE, next_t2 = EINA_FALSE;
> +
> +   EINA_MAGIC_CHECK_TILER(t1, EINA_FALSE);
> +   EINA_MAGIC_CHECK_TILER(t2, EINA_FALSE);
> +
> +   if (!(eina_rectangles_intersect(&t1->area, &t2->area)))
> +     return EINA_FALSE;
> +
> +   itr1 = eina_tiler_iterator_new(t1);
> +   itr2 = eina_tiler_iterator_new(t2);
> +
> +   if ((!eina_iterator_next(itr1, (void**)(void*)(&rect1))) && (!rect1))
> +     return EINA_FALSE;
> +   if ((!eina_iterator_next(itr2, (void**)(void*)(&rect2))) && (!rect2))
> +     return EINA_FALSE;
> +
> +   while((rect1) && (rect2))
> +     {
> +        if (eina_rectangles_intersect(rect1, rect2))
> +          {
> +             if ((rect1->x != rect2->x) ||
> +                 (rect1->y != rect2->y) ||
> +                 (rect1->w != rect2->w) ||
> +                 (rect1->h != rect2->h))
> +               {
> +                  return EINA_FALSE;
> +               }
> +          }
> +        else
> +          return EINA_FALSE;
> +
> +        next_t1 = eina_iterator_next(itr1, (void**)&rect1);
> +        next_t2 = eina_iterator_next(itr2, (void**)&rect2);
> +
> +        if (next_t1 != next_t2)
> +          return EINA_FALSE;
> +
> +        if (!next_t1 && !next_t2)
> +          break;
> +     }
> +
> +   eina_iterator_free(itr1);
> +   eina_iterator_free(itr2);
> +
> +   return EINA_TRUE;
> +
> +}
> +
>   struct _Eina_Tile_Grid_Slicer_Iterator
>   {
>      Eina_Iterator iterator;
> diff --git a/src/lib/eina/eina_tiler.h b/src/lib/eina/eina_tiler.h
> index 3a48383..0f60751 100644
> --- a/src/lib/eina/eina_tiler.h
> +++ b/src/lib/eina/eina_tiler.h
> @@ -308,6 +308,55 @@ EAPI Eina_Iterator     *eina_tiler_iterator_new(const 
> Eina_Tiler *t);
>    * eina_tile_grid_slicer_next() untill it returns #EINA_FALSE.
>    */
>   EAPI Eina_Iterator     *eina_tile_grid_slicer_iterator_new(int x, int y, 
> int w, int h, int tile_w, int tile_h);
> +
> +/**
> + * @brief Gets the union of two tilers.
> + *
> + * @param   dst The first tiler, will store the result.
> + * @param   src The second tiler.
> + * @return  #EINA_TRUE on success, #EINA_FALSE otherwise.
> + *
> + * This fuction get the union of tilers @p dst and @p src.
> + * The result is stored in @p dst. It returns #EINA_TRUE if it succeeds.
> + */
> +EAPI Eina_Bool          eina_tiler_union(Eina_Tiler *dst, Eina_Tiler *src);
> +
> +/**
> + * @brief Subtracts two tilers.
> + *
> + * @param   dst The first tiler, will store the result.
> + * @param   src The second tiler.
> + * @return  #EINA_TRUE on success, #EINA_FALSE otherwise.
> + *
> + * This fuction subtracts two tilers @p dst and @p src.
> + * The result is stored in @p dst. It returns #EINA_TRUE if it succeeds.
> + */
> +EAPI Eina_Bool          eina_tiler_subtract(Eina_Tiler *dst, Eina_Tiler 
> *src);
> +
> +/**
> + * @brief Gets the intersection of two tilers.
> + *
> + * @param   t1 The first tile.
> + * @param   t2 The second tiler.
> + * @return  A pointer of intersection result. @c NULL on failure.
> + *
> + * This fuction gest intersection of two tilers @p t1 and @p t2.
> + * It returns a pointer of result if it succeeds., otherwise returns NULL.
> + */
> +EAPI Eina_Tiler        *eina_tiler_intersection(Eina_Tiler *t1, Eina_Tiler 
> *t2);
> +
> +/**
> + * @brief Gets whether two tilers are equal in rects or not.
> + *
> + * @param   t1 The first tiler.
> + * @param   t2 The second tiler.
> + * @return  #EINA_TRUE is equal, #EINA_FALSE is unequal.
> + *
> + * This fuction gets result of comparison for @p t1 and @p t2.
> + * It returns #EINA_TRUE if tilers are equal.
> + */
> +EAPI Eina_Bool           eina_tiler_equal(Eina_Tiler *t1, Eina_Tiler *t2);
> +
>   /**
>    * @brief Iterates over the tiles set by eina_tile_grid_slicer_setup().
>    *
> diff --git a/src/tests/eina/eina_test_tiler.c 
> b/src/tests/eina/eina_test_tiler.c
> index 2dec168..554dc11 100644
> --- a/src/tests/eina/eina_test_tiler.c
> +++ b/src/tests/eina/eina_test_tiler.c
> @@ -220,10 +220,117 @@ START_TEST(eina_test_tiler_stable)
>   }
>   END_TEST
>
> +START_TEST(eina_test_tiler_calculation)
> +{
> +   Eina_Tiler *t1, *t2, *t;
> +   Eina_Iterator *itr;
> +   Eina_Rectangle r1, r2, *rp;
> +   int i = 0;
> +
> +   eina_init();
> +
> +   t1 = eina_tiler_new(500, 500);
> +   fail_if(!t1);
> +
> +   t2 = eina_tiler_new(500, 500);
> +   fail_if(!t2);
> +
> +   t = eina_tiler_new(500, 500);
> +   fail_if(!t);
> +
> +   eina_tiler_tile_size_set(t1, 1, 1);
> +   eina_tiler_tile_size_set(t2, 1, 1);
> +   eina_tiler_tile_size_set(t, 1, 1);
> +
> +   EINA_RECTANGLE_SET(&r1, 0, 0, 500, 500);
> +   eina_tiler_rect_add(t1, &r1);
> +
> +   EINA_RECTANGLE_SET(&r2, 100, 100, 300, 300);
> +   eina_tiler_rect_add(t2, &r2);
> +
> +   fail_if(!eina_tiler_union(t1, t2));
> +
> +   itr = eina_tiler_iterator_new(t1);
> +   EINA_ITERATOR_FOREACH(itr, rp)
> +     {
> +        fail_if(rp->w != 500);
> +        fail_if(rp->h != 500);
> +        fail_if(rp->x != 0);
> +        fail_if(rp->y != 0);
> +        ++i;
> +     }
> +
> +   eina_iterator_free(itr);
> +   eina_tiler_clear(t1);
> +
> +   fail_if(i != 1);
> +
> +   eina_tiler_rect_add(t1, &r1);
> +
> +   fail_if(!eina_tiler_subtract(t1, t2));
> +
> +   i = 0;
> +   itr = eina_tiler_iterator_new(t1);
> +   EINA_ITERATOR_FOREACH(itr, rp)
> +     {
> +        fail_if(!eina_rectangles_intersect(&r1, rp));
> +        fail_if(eina_rectangles_intersect(&r2, rp));
> +
> +        fail_if(rp->w <= 0);
> +        fail_if(rp->h <= 0);
> +        fail_if(rp->x < 0 || rp->x + rp->w > 500);
> +        fail_if(rp->y < 0 || rp->y + rp->h > 500);
> +        ++i;
> +     }
> +
> +   eina_iterator_free(itr);
> +   eina_tiler_clear(t1);
> +
> +   fail_if(i != 4);
> +
> +
> +   eina_tiler_rect_add(t1, &r1);
> +
> +   t = eina_tiler_intersection(t1, t2);
> +   fail_if(!t);
> +
> +   i = 0;
> +   itr = eina_tiler_iterator_new(t);
> +   EINA_ITERATOR_FOREACH(itr, rp)
> +     {
> +        fail_if(!eina_rectangles_intersect(&r1, rp));
> +        fail_if(!eina_rectangles_intersect(&r2, rp));
> +
> +        fail_if(rp->w <= 0);
> +        fail_if(rp->h <= 0);
> +        fail_if(rp->x < 0 || rp->x + rp->w > 500);
> +        fail_if(rp->y < 0 || rp->y + rp->h > 500);
> +        ++i;
> +     }
> +
> +   eina_iterator_free(itr);
> +   eina_tiler_clear(t);
> +
> +   fail_if(i != 1);
> +
> +   eina_tiler_rect_add(t, &r1);
> +
> +   fail_if(!eina_tiler_equal(t, t1));
> +   fail_if(!eina_tiler_equal(t1, t));
> +
> +   eina_tiler_free(t);
> +   eina_tiler_free(t1);
> +   eina_tiler_free(t2);
> +
> +   eina_shutdown();
> +}
> +END_TEST
> +
>   void
>   eina_test_tiler(TCase *tc)
>   {
>      tcase_add_test(tc, eina_test_tile_grid_slicer_iterator);
>      tcase_add_test(tc, eina_test_tiler_all);
>      tcase_add_test(tc, eina_test_tiler_stable);
> +   tcase_add_test(tc, eina_test_tiler_calculation);
>   }
>


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