1 files changed, 554 insertions, 0 deletions

diff --git a/libraries/evas/src/lib/canvas/evas_object_polygon.c b/libraries/evas/src/lib/canvas/evas_object_polygon.c
new file mode 100644
index 0000000..cbc1802
--- /dev/null
+++ b/libraries/evas/src/lib/canvas/evas_object_polygon.c
@@ -0,0 +1,554 @@
+#include "evas_common.h"
+#include "evas_private.h"
+
+/* private magic number for polygon objects */
+static const char o_type[] = "polygon";
+
+/* private struct for line object internal data */
+typedef struct _Evas_Object_Polygon      Evas_Object_Polygon;
+typedef struct _Evas_Polygon_Point       Evas_Polygon_Point;
+
+struct _Evas_Object_Polygon
+{
+   DATA32               magic;
+   Eina_List           *points;
+   void                *engine_data;
+   struct {
+      int x, y;
+   } offset;
+   Evas_Coord_Rectangle geometry;
+   char                 changed : 1;
+};
+
+struct _Evas_Polygon_Point
+{
+   Evas_Coord x, y;
+};
+
+/* private methods for polygon objects */
+static void evas_object_polygon_init(Evas_Object *obj);
+static void *evas_object_polygon_new(void);
+static void evas_object_polygon_render(Evas_Object *obj, void *output, void *context, void *surface, int x, int y);
+static void evas_object_polygon_free(Evas_Object *obj);
+static void evas_object_polygon_render_pre(Evas_Object *obj);
+static void evas_object_polygon_render_post(Evas_Object *obj);
+
+static unsigned int evas_object_polygon_id_get(Evas_Object *obj);
+static unsigned int evas_object_polygon_visual_id_get(Evas_Object *obj);
+static void *evas_object_polygon_engine_data_get(Evas_Object *obj);
+
+static int evas_object_polygon_is_opaque(Evas_Object *obj);
+static int evas_object_polygon_was_opaque(Evas_Object *obj);
+static int evas_object_polygon_is_inside(Evas_Object *obj, Evas_Coord x, Evas_Coord y);
+static int evas_object_polygon_was_inside(Evas_Object *obj, Evas_Coord x, Evas_Coord y);
+
+static const Evas_Object_Func object_func =
+{
+   /* methods (compulsory) */
+   evas_object_polygon_free,
+     evas_object_polygon_render,
+     evas_object_polygon_render_pre,
+     evas_object_polygon_render_post,
+     evas_object_polygon_id_get,
+     evas_object_polygon_visual_id_get,
+     evas_object_polygon_engine_data_get,
+   /* these are optional. NULL = nothing */
+     NULL,
+     NULL,
+     NULL,
+     NULL,
+     evas_object_polygon_is_opaque,
+     evas_object_polygon_was_opaque,
+     evas_object_polygon_is_inside,
+     evas_object_polygon_was_inside,
+     NULL,
+     NULL,
+     NULL,
+     NULL,
+     NULL
+};
+
+/* the actual api call to add a rect */
+/* it has no other api calls as all properties are standard */
+
+EVAS_MEMPOOL(_mp_obj);
+
+EAPI Evas_Object *
+evas_object_polygon_add(Evas *e)
+{
+   Evas_Object *obj;
+
+   MAGIC_CHECK(e, Evas, MAGIC_EVAS);
+   return NULL;
+   MAGIC_CHECK_END();
+   obj = evas_object_new(e);
+   evas_object_polygon_init(obj);
+   evas_object_inject(obj, e);
+   return obj;
+}
+
+EAPI void
+evas_object_polygon_point_add(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
+{
+   Evas_Object_Polygon *o;
+   Evas_Polygon_Point *p;
+   Evas_Coord min_x, max_x, min_y, max_y;
+   int is, was = 0;
+
+   MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
+   return;
+   MAGIC_CHECK_END();
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   MAGIC_CHECK(o, Evas_Object_Polygon, MAGIC_OBJ_POLYGON);
+   return;
+   MAGIC_CHECK_END();
+
+   if (obj->layer->evas->events_frozen <= 0)
+     {
+        if (!evas_event_passes_through(obj) &&
+            !evas_event_freezes_through(obj))
+          was = evas_object_is_in_output_rect(obj,
+                                              obj->layer->evas->pointer.x,
+                                              obj->layer->evas->pointer.y,
+                                              1, 1);
+     }
+   if (!o->points)
+     {
+        o->offset.x = obj->cur.geometry.x;
+        o->offset.y = obj->cur.geometry.y;
+     }
+   else
+     {
+        /* Update all points and take offset into account. */
+        Eina_List *over;
+
+        EINA_LIST_FOREACH(o->points, over, p)
+          {
+             p->x += o->offset.x;
+             p->y += o->offset.y;
+          }
+     }
+
+   p = malloc(sizeof(Evas_Polygon_Point));
+   if (!p) return;
+   p->x = x + o->offset.x;
+   p->y = y + o->offset.y;
+
+   if (!o->points)
+     {
+        obj->cur.geometry.x = p->x;
+        obj->cur.geometry.y = p->y;
+        obj->cur.geometry.w = 2;
+        obj->cur.geometry.h = 2;
+     }
+   else
+     {
+        if (p->x < obj->cur.geometry.x) min_x = p->x;
+        else min_x = obj->cur.geometry.x;
+        if (p->x > (obj->cur.geometry.x + obj->cur.geometry.w - 2))
+          max_x = p->x;
+        else max_x = obj->cur.geometry.x + obj->cur.geometry.w - 2;
+        if (p->y < obj->cur.geometry.y) min_y = p->y;
+        else min_y = obj->cur.geometry.y;
+        if (p->y > (obj->cur.geometry.y + obj->cur.geometry.h - 2))
+          max_y = p->y;
+        else max_y = obj->cur.geometry.y + obj->cur.geometry.h - 2;
+        obj->cur.geometry.x = min_x;
+        obj->cur.geometry.y = min_y;
+        obj->cur.geometry.w = max_x - min_x + 2;
+        obj->cur.geometry.h = max_y - min_y + 2;
+     }
+   o->points = eina_list_append(o->points, p);
+
+   o->geometry = obj->cur.geometry;
+   o->offset.x = 0;
+   o->offset.y = 0;
+
+   ////   obj->cur.cache.geometry.validity = 0;
+   o->changed = EINA_TRUE;
+   evas_object_change(obj);
+   evas_object_clip_dirty(obj);
+   evas_object_coords_recalc(obj);
+   if (obj->layer->evas->events_frozen <= 0)
+     {
+        is = evas_object_is_in_output_rect(obj,
+                                           obj->layer->evas->pointer.x,
+                                           obj->layer->evas->pointer.y, 1, 1);
+        if (!evas_event_passes_through(obj) &&
+            !evas_event_freezes_through(obj) )
+          {
+             if ((is ^ was) && obj->cur.visible)
+               evas_event_feed_mouse_move(obj->layer->evas,
+                                          obj->layer->evas->pointer.x,
+                                          obj->layer->evas->pointer.y,
+                                          obj->layer->evas->last_timestamp,
+                                          NULL);
+          }
+     }
+   evas_object_inform_call_move(obj);
+   evas_object_inform_call_resize(obj);
+}
+
+EAPI void
+evas_object_polygon_points_clear(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+   int is, was;
+
+   MAGIC_CHECK(obj, Evas_Object, MAGIC_OBJ);
+   return;
+   MAGIC_CHECK_END();
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   MAGIC_CHECK(o, Evas_Object_Polygon, MAGIC_OBJ_POLYGON);
+   return;
+   MAGIC_CHECK_END();
+   was = evas_object_is_in_output_rect(obj,
+                                       obj->layer->evas->pointer.x,
+                                       obj->layer->evas->pointer.y, 1, 1);
+   while (o->points)
+     {
+        free(o->points->data);
+        o->points = eina_list_remove(o->points, o->points->data);
+     }
+   obj->cur.geometry.x = 0;
+   obj->cur.geometry.y = 0;
+   obj->cur.geometry.w = 0;
+   obj->cur.geometry.h = 0;
+   ////   obj->cur.cache.geometry.validity = 0;
+   o->changed = EINA_TRUE;
+   evas_object_change(obj);
+   evas_object_clip_dirty(obj);
+   evas_object_coords_recalc(obj);
+   is = evas_object_is_in_output_rect(obj,
+                                      obj->layer->evas->pointer.x,
+                                      obj->layer->evas->pointer.y, 1, 1);
+   if ((is || was) && obj->cur.visible)
+     evas_event_feed_mouse_move(obj->layer->evas,
+                                obj->layer->evas->pointer.x,
+                                obj->layer->evas->pointer.y,
+                                obj->layer->evas->last_timestamp,
+                                NULL);
+   evas_object_inform_call_move(obj);
+   evas_object_inform_call_resize(obj);
+}
+
+/* all nice and private */
+static void
+evas_object_polygon_init(Evas_Object *obj)
+{
+   /* alloc image ob, setup methods and default values */
+   obj->object_data = evas_object_polygon_new();
+   /* set up default settings for this kind of object */
+   obj->cur.color.r = 255;
+   obj->cur.color.g = 255;
+   obj->cur.color.b = 255;
+   obj->cur.color.a = 255;
+   obj->cur.geometry.x = 0;
+   obj->cur.geometry.y = 0;
+   obj->cur.geometry.w = 0;
+   obj->cur.geometry.h = 0;
+   obj->cur.layer = 0;
+   /* set up object-specific settings */
+   obj->prev = obj->cur;
+   /* set up methods (compulsory) */
+   obj->func = &object_func;
+   obj->type = o_type;
+}
+
+static void *
+evas_object_polygon_new(void)
+{
+   Evas_Object_Polygon *o;
+
+   /* alloc obj private data */
+   EVAS_MEMPOOL_INIT(_mp_obj, "evas_object_polygon", Evas_Object_Polygon, 32, NULL);
+   o = EVAS_MEMPOOL_ALLOC(_mp_obj, Evas_Object_Polygon);
+   if (!o) return NULL;
+   EVAS_MEMPOOL_PREP(_mp_obj, o, Evas_Object_Polygon);
+   o->magic = MAGIC_OBJ_POLYGON;
+   return o;
+}
+
+static void
+evas_object_polygon_free(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+
+   /* frees private object data. very simple here */
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   MAGIC_CHECK(o, Evas_Object_Polygon, MAGIC_OBJ_POLYGON);
+   return;
+   MAGIC_CHECK_END();
+   /* free obj */
+   while (o->points)
+     {
+        free(o->points->data);
+        o->points = eina_list_remove(o->points, o->points->data);
+     }
+   o->engine_data = obj->layer->evas->engine.func->polygon_points_clear(obj->layer->evas->engine.data.output,
+                                                                        obj->layer->evas->engine.data.context,
+                                                                        o->engine_data);
+   o->magic = 0;
+   EVAS_MEMPOOL_FREE(_mp_obj, o);
+}
+
+static void
+evas_object_polygon_render(Evas_Object *obj, void *output, void *context, void *surface, int x, int y)
+{
+   Evas_Object_Polygon *o;
+   Eina_List *l;
+   Evas_Polygon_Point *p;
+
+   /* render object to surface with context, and offxet by x,y */
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   obj->layer->evas->engine.func->context_color_set(output,
+                                                    context,
+                                                    obj->cur.cache.clip.r,
+                                                    obj->cur.cache.clip.g,
+                                                    obj->cur.cache.clip.b,
+                                                    obj->cur.cache.clip.a);
+   obj->layer->evas->engine.func->context_multiplier_unset(output,
+                                                           context);
+   obj->layer->evas->engine.func->context_render_op_set(output, context,
+                                                        obj->cur.render_op);
+   if (o->changed)
+     {
+        o->engine_data = obj->layer->evas->engine.func->polygon_points_clear(obj->layer->evas->engine.data.output,
+                                                                             obj->layer->evas->engine.data.context,
+                                                                             o->engine_data);
+        EINA_LIST_FOREACH(o->points, l, p)
+          {
+             //px = evas_coord_world_x_to_screen(obj->layer->evas, p->x);
+             //py = evas_coord_world_y_to_screen(obj->layer->evas, p->y);
+             o->engine_data = obj->layer->evas->engine.func->polygon_point_add(obj->layer->evas->engine.data.output,
+                                                                               obj->layer->evas->engine.data.context,
+                                                                               o->engine_data,
+                                                                               p->x, p->y);
+          }
+     }
+
+   if (o->engine_data)
+     obj->layer->evas->engine.func->polygon_draw(output,
+                                                 context,
+                                                 surface,
+                                                 o->engine_data,
+                                                 o->offset.x + x, o->offset.y + y);
+}
+
+static void
+evas_object_polygon_render_pre(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+   int is_v, was_v;
+
+   /* dont pre-render the obj twice! */
+   if (obj->pre_render_done) return;
+   obj->pre_render_done = 1;
+   /* pre-render phase. this does anything an object needs to do just before */
+   /* rendering. this could mean loading the image data, retrieving it from */
+   /* elsewhere, decoding video etc. */
+   /* then when this is done the object needs to figure if it changed and */
+   /* if so what and where and add the appropriate redraw lines */
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   /* if someone is clipping this obj - go calculate the clipper */
+   if (obj->cur.clipper)
+     {
+        if (obj->cur.cache.clip.dirty)
+          evas_object_clip_recalc(obj->cur.clipper);
+        obj->cur.clipper->func->render_pre(obj->cur.clipper);
+     }
+   /* now figure what changed and add draw rects */
+   /* if it just became visible or invisible */
+   is_v = evas_object_is_visible(obj);
+   was_v = evas_object_was_visible(obj);
+   if (is_v != was_v)
+     {
+        evas_object_render_pre_visible_change(&obj->layer->evas->clip_changes, obj, is_v, was_v);
+        goto done;
+     }
+   if ((obj->cur.map != obj->prev.map) ||
+       (obj->cur.usemap != obj->prev.usemap))
+     {
+        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, obj);
+        goto done;
+     }
+   /* it's not visible - we accounted for it appearing or not so just abort */
+   if (!is_v) goto done;
+   /* clipper changed this is in addition to anything else for obj */
+   evas_object_render_pre_clipper_change(&obj->layer->evas->clip_changes, obj);
+   /* if we restacked (layer or just within a layer) */
+   if (obj->restack)
+     {
+        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, obj);
+        goto done;
+     }
+   /* if it changed render op */
+   if (obj->cur.render_op != obj->prev.render_op)
+     {
+        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, obj);
+        goto done;
+     }
+   /* if it changed color */
+   if ((obj->cur.color.r != obj->prev.color.r) ||
+       (obj->cur.color.g != obj->prev.color.g) ||
+       (obj->cur.color.b != obj->prev.color.b) ||
+       (obj->cur.color.a != obj->prev.color.a))
+     {
+        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, obj);
+        goto done;
+     }
+   /* if it changed geometry - and obviously not visibility or color */
+   /* calculate differences since we have a constant color fill */
+   /* we really only need to update the differences */
+   if ((obj->cur.geometry.x != obj->prev.geometry.x) ||
+       (obj->cur.geometry.y != obj->prev.geometry.y) ||
+       (obj->cur.geometry.w != obj->prev.geometry.w) ||
+       (obj->cur.geometry.h != obj->prev.geometry.h) ||
+       (o->changed))
+     {
+        evas_object_render_pre_prev_cur_add(&obj->layer->evas->clip_changes, obj);
+        goto done;
+     }
+   done:
+   if ((obj->cur.geometry.x != obj->prev.geometry.x) ||
+       (obj->cur.geometry.y != obj->prev.geometry.y))
+     {
+        if (!o->changed)
+          {
+             o->offset.x += obj->cur.geometry.x - obj->prev.geometry.x;
+             o->offset.y += obj->cur.geometry.y - obj->prev.geometry.y;
+          }
+        else
+          {
+             o->offset.x += obj->cur.geometry.x - o->geometry.x;
+             o->offset.y += obj->cur.geometry.y - o->geometry.y;
+          }
+     }
+   evas_object_render_pre_effect_updates(&obj->layer->evas->clip_changes, obj, is_v, was_v);
+}
+
+static void
+evas_object_polygon_render_post(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+
+   /* this moves the current data to the previous state parts of the object */
+   /* in whatever way is safest for the object. also if we don't need object */
+   /* data anymore we can free it if the object deems this is a good idea */
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   /* remove those pesky changes */
+   evas_object_clip_changes_clean(obj);
+   /* move cur to prev safely for object data */
+   obj->prev = obj->cur;
+   o->changed = 0;
+}
+
+static unsigned int evas_object_polygon_id_get(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   if (!o) return 0;
+   return MAGIC_OBJ_POLYGON;
+}
+
+static unsigned int evas_object_polygon_visual_id_get(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   if (!o) return 0;
+   return MAGIC_OBJ_SHAPE;
+}
+
+static void *evas_object_polygon_engine_data_get(Evas_Object *obj)
+{
+   Evas_Object_Polygon *o;
+
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   if (!o) return NULL;
+   return o->engine_data;
+}
+
+static int
+evas_object_polygon_is_opaque(Evas_Object *obj __UNUSED__)
+{
+   /* this returns 1 if the internal object data implies that the object is */
+   /* currently fully opaque over the entire line it occupies */
+   return 0;
+}
+
+static int
+evas_object_polygon_was_opaque(Evas_Object *obj __UNUSED__)
+{
+   /* this returns 1 if the internal object data implies that the object was */
+   /* previously fully opaque over the entire line it occupies */
+   return 0;
+}
+
+/* We count the number of edges a "ray" 90 degs upwards from our point
+ * intersects with. If it's even, we are outside of the polygon, if it's odd,
+ * we are inside of it. */
+static int
+evas_object_polygon_is_inside(Evas_Object *obj, Evas_Coord x, Evas_Coord y)
+{
+   Evas_Object_Polygon *o;
+   int num_edges = 0; /* Number of edges we crossed */
+   Eina_List *itr;
+   Evas_Polygon_Point *p;
+
+   o = (Evas_Object_Polygon *)(obj->object_data);
+   if (!o) return 0;
+   if (!o->points) return 0;
+
+   /* Adjust X and Y according to current geometry */
+   x -= o->offset.x;
+   y -= o->offset.y;
+
+   if (eina_list_count(o->points) == 1)
+     {
+        p = eina_list_data_get(o->points);
+        return ((p->x == x) && (p->y == y));
+     }
+
+   EINA_LIST_FOREACH(o->points, itr, p)
+     {
+        Evas_Coord line_y;
+        Eina_List *next = eina_list_next(itr);
+        Evas_Polygon_Point *p_next;
+        /* Get the next, or if there's no next, take the first */
+        if (next)
+          {
+             p_next = eina_list_data_get(next);
+          }
+        else
+          {
+             p_next = eina_list_data_get(o->points);
+          }
+
+        /* Make sure that we are directly below the edge,
+         * and that p->x != p_next->x */
+        if (((p->x < p_next->x) && (p->x <= x) && (x < p_next->x)) ||
+              ((p->x > p_next->x) && (p_next->x < x) && (x <= p->x)))
+          {
+             line_y = ((double) (p->y - p_next->y) /
+                   (double) (p->x - p_next->x)) *
+                (x - p_next->x) + p_next->y;
+             /* We crossed that edge if the line is directly above us */
+             if (line_y < y)
+                num_edges++;
+          }
+     }
+
+   /* Return true if num_edges is odd */
+   return ((num_edges % 2) == 1);
+}
+
+static int
+evas_object_polygon_was_inside(Evas_Object *obj __UNUSED__, Evas_Coord x __UNUSED__, Evas_Coord y __UNUSED__)
+{
+   /* this returns 1 if the canvas co-ordinates were inside the object based */
+   /* on object private data. not much use for rects, but for polys, images */
+   /* and other complex objects it might be */
+   return 1;
+}