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authorCarsten Haitzler <raster@rasterman.com>2002-11-08 08:02:15 +0000
committerCarsten Haitzler <raster@rasterman.com>2002-11-08 08:02:15 +0000
commit56b5e15f26e16ec835fdcdc7649347f23fb6abf6 (patch)
tree3f86155cee8ee5cec8ae19fcfba6d2625889bff8 /legacy/evas/src/lib/canvas/evas_object_polygon.c
parentin goes new code (diff)
downloadefl-56b5e15f26e16ec835fdcdc7649347f23fb6abf6.tar.gz
code move
SVN revision: 6445
Diffstat (limited to 'legacy/evas/src/lib/canvas/evas_object_polygon.c')
-rw-r--r--legacy/evas/src/lib/canvas/evas_object_polygon.c407
1 files changed, 407 insertions, 0 deletions
diff --git a/legacy/evas/src/lib/canvas/evas_object_polygon.c b/legacy/evas/src/lib/canvas/evas_object_polygon.c
new file mode 100644
index 0000000000..5c4724b997
--- /dev/null
+++ b/legacy/evas/src/lib/canvas/evas_object_polygon.c
@@ -0,0 +1,407 @@
+#include "evas_common.h"
+#include "evas_private.h"
+#include "Evas.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;
+ int changed : 1;
+ Evas_List *points;
+
+ void *engine_data;
+};
+
+struct _Evas_Polygon_Point
+{
+ double 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 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, double x, double y);
+static int evas_object_polygon_was_inside(Evas_Object *obj, double x, double y);
+
+static 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,
+ /* 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
+};
+
+/* the actual api call to add a rect */
+/* it has no other api calls as all properties are standard */
+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();
+ evas_object_polygon_init(obj);
+ evas_object_inject(obj, e);
+ return obj;
+}
+
+void
+evas_object_polygon_point_add(Evas_Object *obj, double x, double y)
+{
+ Evas_Object_Polygon *o;
+ Evas_Polygon_Point *p;
+ double min_x, max_x, min_y, max_y;
+ 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);
+ p = malloc(sizeof(Evas_Polygon_Point));
+ if (!p) return;
+ p->x = x;
+ p->y = y;
+
+ if (!o->points)
+ {
+ obj->cur.geometry.x = p->x;
+ obj->cur.geometry.y = p->y;
+ obj->cur.geometry.w = 2.0;
+ obj->cur.geometry.h = 2.0;
+ }
+ else
+ {
+ if (x < obj->cur.geometry.x) min_x = x;
+ else min_x = obj->cur.geometry.x;
+ if (x > (obj->cur.geometry.x + obj->cur.geometry.w - 2.0)) max_x = x;
+ else max_x = obj->cur.geometry.x + obj->cur.geometry.w - 2.0;
+ if (y < obj->cur.geometry.y) min_y = y;
+ else min_y = obj->cur.geometry.y;
+ if (y > (obj->cur.geometry.y + obj->cur.geometry.h - 2.0)) max_y = y;
+ else max_y = obj->cur.geometry.y + obj->cur.geometry.h - 2.0;
+ obj->cur.geometry.x = min_x;
+ obj->cur.geometry.y = min_y;
+ obj->cur.geometry.w = max_x - min_x + 2.0;
+ obj->cur.geometry.h = max_y - min_y + 2.0;
+ }
+ o->points = evas_list_append(o->points, p);
+
+ obj->cur.cache.geometry.validity = 0;
+ o->changed = 1;
+ evas_object_change(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);
+}
+
+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 = evas_list_remove(o->points, o->points->data);
+ }
+ obj->cur.geometry.w = 0;
+ obj->cur.geometry.h = 0;
+ obj->cur.cache.geometry.validity = 0;
+ o->changed = 1;
+ evas_object_change(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);
+}
+
+
+
+
+
+/* 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 = 0.0;
+ obj->cur.geometry.y = 0.0;
+ obj->cur.geometry.w = 0.0;
+ obj->cur.geometry.h = 0.0;
+ 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 */
+ o = calloc(1, sizeof(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 = evas_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;
+ free(o);
+}
+
+static void
+evas_object_polygon_render(Evas_Object *obj, void *output, void *context, void *surface, int x, int y)
+{
+ Evas_Object_Polygon *o;
+ Evas_List *l;
+
+ /* 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);
+ 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);
+ for (l = o->points; l; l = l->next)
+ {
+ Evas_Polygon_Point *p;
+ int px, py;
+
+ p = l->data;
+ 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,
+ px + x, py + y);
+ }
+ if (o->engine_data)
+ obj->layer->evas->engine.func->polygon_draw(output,
+ context,
+ surface,
+ o->engine_data);
+}
+
+static void
+evas_object_polygon_render_pre(Evas_Object *obj)
+{
+ Evas_List *updates = NULL;
+ 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 thr appropriate redraw lines */
+ o = (Evas_Object_Polygon *)(obj->object_data);
+ /* if someone is clipping this obj - go calculate the clipper */
+ if (obj->cur.clipper)
+ {
+ 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)
+ {
+ updates = evas_object_render_pre_visible_change(updates, obj, is_v, was_v);
+ goto done;
+ }
+ /* its 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 */
+ updates = evas_object_render_pre_clipper_change(updates, obj);
+ /* if we restacked (layer or just within a layer) */
+ if (obj->restack)
+ {
+ updates = evas_object_render_pre_prev_cur_add(updates, 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))
+ {
+ updates = evas_object_render_pre_prev_cur_add(updates, obj);
+ goto done;
+ }
+ /* if it changed geometry - and obviously not visibility or color */
+ /* caluclate 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))
+ {
+ updates = evas_object_render_pre_prev_cur_add(updates, obj);
+ goto done;
+ }
+ done:
+ evas_object_render_pre_effect_updates(updates, 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 */
+ while (obj->clip.changes)
+ {
+ Evas_Rectangle *r;
+
+ r = (Evas_Rectangle *)obj->clip.changes->data;
+ obj->clip.changes = evas_list_remove(obj->clip.changes, r);
+ free(r);
+ }
+ /* move cur to prev safely for object data */
+ obj->prev = obj->cur;
+ o->changed = 0;
+}
+
+static int
+evas_object_polygon_is_opaque(Evas_Object *obj)
+{
+ Evas_Object_Polygon *o;
+
+ /* this returns 1 if the internal object data implies that the object is */
+ /* currently fulyl opque over the entire line it occupies */
+ o = (Evas_Object_Polygon *)(obj->object_data);
+ return 0;
+}
+
+static int
+evas_object_polygon_was_opaque(Evas_Object *obj)
+{
+ Evas_Object_Polygon *o;
+
+ /* this returns 1 if the internal object data implies that the object was */
+ /* currently fulyl opque over the entire line it occupies */
+ o = (Evas_Object_Polygon *)(obj->object_data);
+ return 0;
+}
+
+static int
+evas_object_polygon_is_inside(Evas_Object *obj, double x, double y)
+{
+ Evas_Object_Polygon *o;
+
+ /* this returns 1 if the canvas co-ordinates are inside the object based */
+ /* on object private data. not much use for rects, but for polys images */
+ /* and other complex objects it might be */
+ o = (Evas_Object_Polygon *)(obj->object_data);
+ return 1;
+ x = 0;
+ y = 0;
+}
+
+static int
+evas_object_polygon_was_inside(Evas_Object *obj, double x, double y)
+{
+ Evas_Object_Polygon *o;
+
+ /* 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 */
+ o = (Evas_Object_Polygon *)(obj->object_data);
+ return 1;
+ x = 0;
+ y = 0;
+}