From 5ef81292a16155fc88592fa88d2882e08542378a Mon Sep 17 00:00:00 2001
From: Cedric BAIL <cedric@osg.samsung.com>
Date: Fri, 3 Apr 2015 16:31:17 +0200
Subject: [PATCH] ector: fix setting context to always have one available.

---
 src/lib/ector/cairo/ector_cairo_private.h |  6 ++-
 src/lib/ector/cairo/ector_cairo_surface.c | 45 ++++++++++++++++++++---
 2 files changed, 43 insertions(+), 8 deletions(-)

diff --git a/src/lib/ector/cairo/ector_cairo_private.h b/src/lib/ector/cairo/ector_cairo_private.h
index eef2d10436..14277a744b 100644
--- a/src/lib/ector/cairo/ector_cairo_private.h
+++ b/src/lib/ector/cairo/ector_cairo_private.h
@@ -7,12 +7,14 @@ typedef struct _Ector_Cairo_Surface_Data Ector_Cairo_Surface_Data;
 struct _Ector_Cairo_Surface_Data
 {
    cairo_t *cairo;
+
+   Eina_Bool internal : 1;
 };
 
 #define CHECK_CAIRO(Parent) (!(Parent && Parent->cairo))
 
-#define USE(Obj, Sym, Error)                     \
-  if (!Sym) _ector_cairo_symbol_get(Obj, #Sym);  \
+#define USE(Obj, Sym, Error)                            \
+  if (!Sym) Sym = _ector_cairo_symbol_get(Obj, #Sym);   \
   if (!Sym) return Error;
 
 static inline void *
diff --git a/src/lib/ector/cairo/ector_cairo_surface.c b/src/lib/ector/cairo/ector_cairo_surface.c
index 6a89282788..2cb9cb0a32 100644
--- a/src/lib/ector/cairo/ector_cairo_surface.c
+++ b/src/lib/ector/cairo/ector_cairo_surface.c
@@ -45,26 +45,57 @@ _ector_cairo_surface_symbol_get(Eo *obj EINA_UNUSED,
    return eina_module_symbol_get(_cairo_so, name);
 }
 
+#undef USE
+#define USE(Obj, Sym, Error)                                            \
+  if (!Sym) Sym = _ector_cairo_surface_symbol_get(Obj, NULL, #Sym);     \
+  if (!Sym) return Error;
 
 static Ector_Renderer *
 _ector_cairo_surface_ector_generic_surface_renderer_factory_new(Eo *obj,
                                                                 Ector_Cairo_Surface_Data *pd EINA_UNUSED,
                                                                 const Eo_Class *type)
 {
-   if (eo_isa(type, ECTOR_RENDERER_CAIRO_SHAPE_CLASS))
+   if (type == ECTOR_RENDERER_GENERIC_SHAPE_CLASS)
      return eo_add(ECTOR_RENDERER_CAIRO_SHAPE_CLASS, obj);
-   else if (eo_isa(type, ECTOR_RENDERER_CAIRO_GRADIENT_LINEAR_CLASS))
+   else if (type == ECTOR_RENDERER_GENERIC_GRADIENT_LINEAR_CLASS)
      return eo_add(ECTOR_RENDERER_CAIRO_GRADIENT_LINEAR_CLASS, obj);
-   else if (eo_isa(type, ECTOR_RENDERER_CAIRO_GRADIENT_RADIAL_CLASS))
+   else if (type == ECTOR_RENDERER_GENERIC_GRADIENT_RADIAL_CLASS)
      return eo_add(ECTOR_RENDERER_CAIRO_GRADIENT_RADIAL_CLASS, obj);
    return NULL;
 }
 
+typedef struct _cairo_surface_t cairo_surface_t;
+
+static void (*cairo_destroy)(cairo_t *cr) = NULL;
+static cairo_surface_t *(*cairo_image_surface_create)(int format,
+                                                      int width,
+                                                      int height) = NULL;
+static cairo_t *(*cairo_create)(cairo_surface_t *target) = NULL;
+
+static cairo_surface_t *internal = NULL;
+
 static void
-_ector_cairo_surface_context_set(Eo *obj EINA_UNUSED,
+_ector_cairo_surface_context_set(Eo *obj,
                                  Ector_Cairo_Surface_Data *pd,
                                  cairo_t *ctx)
 {
+   if (pd->internal)
+     {
+        USE(obj, cairo_destroy, );
+
+        if (pd->cairo) cairo_destroy(pd->cairo);
+        pd->internal = EINA_FALSE;
+     }
+   if (!ctx)
+     {
+        USE(obj, cairo_image_surface_create, );
+        USE(obj, cairo_create, );
+
+        fprintf(stderr, "tada\n");
+
+        if (!internal) internal = cairo_image_surface_create(0, 1, 1);
+        ctx = cairo_create(internal);
+     }
    pd->cairo = ctx;
 }
 
@@ -76,11 +107,13 @@ _ector_cairo_surface_context_get(Eo *obj EINA_UNUSED,
 }
 
 static void
-_ector_cairo_surface_eo_base_constructor(Eo *obj EINA_UNUSED,
-                                         Ector_Cairo_Surface_Data *pd EINA_UNUSED)
+_ector_cairo_surface_eo_base_constructor(Eo *obj,
+                                         Ector_Cairo_Surface_Data *pd)
 {
    eo_do_super(obj, ECTOR_CAIRO_SURFACE_CLASS, eo_constructor());
    _cairo_count++;
+
+   _ector_cairo_surface_context_set(obj, pd, NULL);
 }
 
 static void