Adding bitblit functions

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1311 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 29 insertions, 0 deletions

diff --git a/nuttx/include/nuttx/nxglib.h b/nuttx/include/nuttx/nxglib.h
index 5d5c509e6..b9269ed52 100644
--- a/nuttx/include/nuttx/nxglib.h
+++ b/nuttx/include/nuttx/nxglib.h
@@ -47,6 +47,35 @@
  * Public Types
  ****************************************************************************/
 
+/* Graphics structures ******************************************************/
+
+/* A given coordinate is limited to the screen height an width.  If either
+ * of those values exceed 32,767 pixels, then the following will have to need
+ * to change:
+ */
+
+typedef sint16 nxgl_coord_t;
+
+/* Describes a point on the display */
+
+struct nxgl_point_s
+{
+  nxgl_coord_t x;         /* Range: 0 to screen width - 1 */
+  nxgl_coord_t y;         /* Rnage: 0 to screen height - 1*/
+};
+
+/* Describes a rectangle on the display */
+
+struct nxgl_rect_s
+{
+  struct nxgl_point_t pt1; /* Upper, left-hand corner */
+  struct nxgl_point_t pt2; /* Lower, right-hand corner */
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
 #undef EXTERN
 #if defined(__cplusplus)
 # define EXTERN extern "C"