Mercurial > MadButterfly

diff include/mb_graph_engine_openvg.h @ 619:7020ed3c3e37 openvg

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Actiavte a VGImage before using a pattern paint or image surface. - A VGImage can only activated for a pattern or an image in any instance. - _ge_openvg_img trace the object activated for currently and its deactivation function. - everytime a pattern paint or image surface will be used, the current activated one will be deactivated, and activate a new one.
author Thinker K.F. Li <thinker@branda.to>
date Thu, 08 Jul 2010 18:44:26 +0800
parents 35a67a837a53
children 3f544e876939
line wrap: on
line diff
--- a/include/mb_graph_engine_openvg.h	Thu Jul 08 13:51:47 2010 +0800
+++ b/include/mb_graph_engine_openvg.h	Thu Jul 08 18:44:26 2010 +0800
@@ -110,10 +110,16 @@
  * used to make sure previous associated pattern or surface being
  * released before new association.
  *
- * Functions must release assocation specified by
- * _ge_openvg_img::asso_pattern or _ge_openvg_img::asso_surface before
- * new association, and record new association as one of thes two
- * vairables.
+ * A _ge_openvg_img can be associated by mutltiple patterns and
+ * surfaces.  But, at most one of associated patterns or surfaces, the
+ * _ge_openvg_img can be activated for at any instant.
+ * _ge_openvg_img::activated_for trace the object it being activated
+ * for.  When a context will be current, the _ge_openvg_img associated
+ * with its surface would be activated for the surface.  When a paint
+ * wil be used, the _ge_openvg_img associated must be activated for
+ * the paint.  Before activated, the old activation must be
+ * deactivated.  _ge_openvg_img::deactivate_func is a pointer to
+ * deactivation function of activated pattern or surface.
  *
  * \sa _ge_openvg_img_t
  * \note This is type is for internal using of OpenVG graphic engine.
@@ -121,8 +127,8 @@
 struct _ge_openvg_img {
     int ref;
     VGImage img;
-    mbe_pattern_t *asso_pattern;
-    mbe_surface_t *asso_surface;
+    void *activated_for;
+    void (*deactivate_func)(void *obj);
 };
 
 #define MB_MATRIX_2_OPENVG(vgmtx, mtx) do {	\
@@ -140,6 +146,8 @@
 extern EGLNativeDisplayType _ge_openvg_disp_id;
 extern mbe_t *_ge_openvg_current_canvas;
 extern void _mbe_load_pattern_mtx(VGfloat *mtx1, VGfloat *mtx2, int mode);
+extern void _ge_vg_img_activate_for_pattern(mbe_pattern_t *ptn);
+extern void _ge_vg_img_activate_for_surface(mbe_surface_t *surf);
 
 extern mbe_pattern_t *mbe_pattern_create_for_surface(mbe_surface_t *surface);
 extern mbe_pattern_t *mbe_pattern_create_radial(co_aix cx0, co_aix cy0,
@@ -175,12 +183,20 @@
 			   (canvas)->tgt->surface,		\
 			   (canvas)->ctx);			\
 	}							\
+	/* \sa _ge_openvg_img_t */				\
+	_ge_vg_img_activate_for_surface((canvas)->tgt);		\
     } while(0)
 /* TODO: switch VGImage between VGPaint and surface. */
 #define _MK_CURRENT_PAINT(canvas)					\
-    if((canvas)->paint_installed) {					\
-	vgSetPaint((canvas)->paint, VG_FILL_PATH|VG_STROKE_PATH);	\
-    }
+    do {								\
+	if((canvas)->paint_installed == 0) {				\
+	    vgSetPaint((canvas)->paint, VG_FILL_PATH|VG_STROKE_PATH);	\
+	    (canvas)->paint_installed = 1;				\
+	}								\
+	/* \sa _ge_openvg_img_t */					\
+	if((canvas)->src)						\
+	    _ge_vg_img_activate_for_pattern((canvas)->src);		\
+    } while(0)
 
 #define mbe_transform(canvas, _mtx)				\
     do {							\