1 files changed, 76 insertions, 0 deletions
diff --git a/cogl/cogl-overlay-private.h b/cogl/cogl-overlay-private.h
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+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2013 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ *
+ */
+
+#ifndef _COGL_OVERLAY_PRIVATE_H_
+#define _COGL_OVERLAY_PRIVATE_H_
+
+#include <cogl/cogl-overlay.h>
+
+typedef enum _CoglOverlayChange
+{
+  COGL_OVERLAY_CHANGE_SOURCE = 1<<0,
+  COGL_OVERLAY_CHANGE_TRANSFORM = 1<<1,
+} CoglOverlayChange;
+
+typedef struct _CoglOverlayState
+{
+  /* NB: to avoid a circular reference we don't keep a reference
+   * here... */
+  CoglOutput *output;
+
+  /* Note: In the future we might support other sources, such as for
+   * video */
+  CoglOnscreen *onscreen_source;
+
+  /* XXX: src_x must be the first member for _cogl_overlay_equal() to
+   * work and all remaining members should be comparable via
+   * memcpy() */
+
+  /* What region of the source should be overlayed? */
+  int src_x;
+  int src_y;
+  int src_width;
+  int src_height;
+
+  int dst_x;
+  int dst_y;
+
+} CoglOverlayState;
+
+struct _CoglOverlay
+{
+  CoglObjectClass _parent;
+
+  CoglOverlayState *state;
+  CoglOverlayState *pending;
+};
+
+void
+_cogl_overlay_update_state (CoglOverlay *overlay);
+
+CoglBool
+_cogl_overlay_equal (CoglOverlay *overlay0,
+                     CoglOverlay *overlay1);
+
+#endif /* _COGL_OVERLAY_PRIVATE_H_ */