ecore-wl2: Start on preliminary subsurface support

Signed-off-by: Chris Michael <cp.michael@samsung.com>

src/Makefile_Ecore_Wl2.am

@@ -12,6 +12,7 @@ lib/ecore_wl2/subsurface-client-protocol.h \
 lib/ecore_wl2/subsurface-protocol.c \
 lib/ecore_wl2/xdg-shell-client-protocol.h \
 lib/ecore_wl2/xdg-shell-protocol.c \
+lib/ecore_wl2/ecore_wl2_subsurf.c \
 lib/ecore_wl2/ecore_wl2_dnd.c \
 lib/ecore_wl2/ecore_wl2_window.c \
 lib/ecore_wl2/ecore_wl2_input.c \

src/lib/ecore_wl2/Ecore_Wl2.h

@@ -28,7 +28,7 @@
 /* extern "C" { */
 /* # endif */
 
-typedef struct _Ecore_Wl2_Subsurf Ecore_Wl2_Subsurf;
+typedef struct _Ecore_Wl2_Subsurface Ecore_Wl2_Subsurface;
 
 # ifndef _ECORE_WL2_WINDOW_PREDEF
 typedef struct _Ecore_Wl2_Window Ecore_Wl2_Window;
@@ -164,6 +164,7 @@ EAPI extern int ECORE_WL2_EVENT_WINDOW_CONFIGURE;
  * @li @ref Ecore_Wl2_Init_Group
  * @li @ref Ecore_Wl2_Display_Group
  * @li @ref Ecore_Wl2_Window_Group
+ * @li @ref Ecore_Wl2_Subsurface_Group
  */
 
 /**
@@ -573,6 +574,22 @@ EAPI Eina_Bool ecore_wl2_dnd_selection_clear(Ecore_Wl2_Input *input);
 /* TODO: doxy */
 EAPI void ecore_wl2_input_ungrab(Ecore_Wl2_Input *input);
 
+/**
+ * Create and return a new subsurface.
+ *
+ * Create a new surface (and subsurface interface), with the parent surface
+ * being the one associated with the given @param win.
+ *
+ * The @param win must be visible, otherwise there will be no surface created
+ * for it yet.
+ *
+ * @return the allocated and initialized Ecore_Wl2_Subsurface object, or
+ * NULL on failure
+ *
+ * @ingroup Ecore_Wl2_Subsurface_Group
+ */
+EAPI Ecore_Wl2_Subsurface *ecore_wl2_subsurface_new(Ecore_Wl2_Window *window);
+
 /* # ifdef __cplusplus */
 /* } */
 /* # endif */

src/lib/ecore_wl2/ecore_wl2_private.h

@@ -114,7 +114,7 @@ struct _Ecore_Wl2_Window
 
    Eina_Rectangle geometry;
    Eina_Rectangle opaque;
-   Eina_Rectangle input;
+   Eina_Rectangle input_rect;
 
    Ecore_Wl2_Window_Type type;
 
@@ -267,4 +267,6 @@ void _ecore_wl2_dnd_drop(Ecore_Wl2_Input *input);
 void _ecore_wl2_dnd_selection(Ecore_Wl2_Input *input, struct wl_data_offer *offer);
 void _ecore_wl2_dnd_del(Ecore_Wl2_Dnd_Source *source);
 
+void _ecore_wl2_subsurf_free(Ecore_Wl2_Subsurface *subsurf);
+
 #endif

src/lib/ecore_wl2/ecore_wl2_subsurf.c

@@ -0,0 +1,71 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "ecore_wl2_private.h"
+
+void
+_ecore_wl2_subsurf_free(Ecore_Wl2_Subsurface *subsurf)
+{
+   Ecore_Wl2_Window *parent;
+
+   if (subsurf->wl.subsurface) wl_subsurface_destroy(subsurf->wl.subsurface);
+   if (subsurf->wl.surface) wl_surface_destroy(subsurf->wl.surface);
+
+   parent = subsurf->parent;
+   if (parent)
+     {
+        parent->subsurfs =
+          eina_inlist_remove(parent->subsurfs, EINA_INLIST_GET(subsurf));
+     }
+
+   free(subsurf);
+}
+
+EAPI Ecore_Wl2_Subsurface *
+ecore_wl2_subsurface_new(Ecore_Wl2_Window *window)
+{
+   Ecore_Wl2_Display *display;
+   Ecore_Wl2_Subsurface *subsurf;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(window, NULL);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(window->surface, NULL);
+
+   display = window->display;
+
+   EINA_SAFETY_ON_NULL_RETURN_VAL(display->wl.compositor, NULL);
+   EINA_SAFETY_ON_NULL_RETURN_VAL(display->wl.subcompositor, NULL);
+
+   subsurf = calloc(1, sizeof(Ecore_Wl2_Subsurface));
+   if (!subsurf) return NULL;
+
+   subsurf->parent = window;
+
+   subsurf->wl.surface = wl_compositor_create_surface(display->wl.compositor);
+   if (!subsurf->wl.surface)
+     {
+        ERR("Failed to create surface: %m");
+        goto surf_err;
+     }
+
+   subsurf->wl.subsurface =
+     wl_subcompositor_get_subsurface(display->wl.subcompositor,
+                                     subsurf->wl.surface, window->surface);
+   if (!subsurf->wl.subsurface)
+     {
+        ERR("Could not create subsurface: %m");
+        goto sub_surf_err;
+     }
+
+   window->subsurfs =
+     eina_inlist_append(window->subsurfs, EINA_INLIST_GET(subsurf));
+
+   return subsurf;
+
+sub_surf_err:
+   wl_surface_destroy(subsurf->wl.surface);
+
+surf_err:
+   free(subsurf);
+   return NULL;
+}

src/lib/ecore_wl2/ecore_wl2_window.c

@@ -404,6 +404,8 @@ ecore_wl2_window_free(Ecore_Wl2_Window *window)
 {
    Ecore_Wl2_Display *display;
    Ecore_Wl2_Input *input;
+   Ecore_Wl2_Subsurface *subsurf;
+   Eina_Inlist *tmp;
 
    EINA_SAFETY_ON_NULL_RETURN(window);
 
@@ -425,7 +427,8 @@ ecore_wl2_window_free(Ecore_Wl2_Window *window)
 
    if (window->anim_cb) wl_callback_destroy(window->anim_cb);
 
-   /* TODO: destroy subsurfaces */
+   EINA_INLIST_FOREACH_SAFE(window->subsurfs, tmp, subsurf)
+     _ecore_wl2_subsurf_free(subsurf);
 
    ecore_wl2_window_hide(window);
 
@@ -627,10 +630,10 @@ ecore_wl2_window_input_region_set(Ecore_Wl2_Window *window, int x, int y, int w,
 
    EINA_SAFETY_ON_NULL_RETURN(window);
 
-   window->input.x = x;
-   window->input.y = y;
-   window->input.w = w;
-   window->input.h = h;
+   window->input_rect.x = x;
+   window->input_rect.y = y;
+   window->input_rect.w = w;
+   window->input_rect.h = h;
 
    if (window->type == ECORE_WL2_WINDOW_TYPE_DND) return;