More NXTK files

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1391 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 52 insertions, 0 deletions

diff --git a/nuttx/graphics/nxtk/nxtk_internal.h b/nuttx/graphics/nxtk/nxtk_internal.h
index b5df23a80..2f9878a99 100644
--- a/nuttx/graphics/nxtk/nxtk_internal.h
+++ b/nuttx/graphics/nxtk/nxtk_internal.h
@@ -121,6 +121,58 @@ extern FAR const struct nx_callback_s g_nxtkcb;
 
 EXTERN void nxtk_setsubwindows(FAR struct nxtk_framedwindow_s *fwnd);
 
+/****************************************************************************
+ * Name: nxtk_subwindowclip
+ *
+ * Description:
+ *   Clip the src rectangle so that it lies within the sub-window bounds
+ *   then move the rectangle to that it is relative to the containing
+ *   window.
+ *
+ * Input parameters:
+ *   fwnd   - The framed window to be used
+ *   dest   - The locaton to put the result
+ *   src    - The src rectangle in relative sub-window coordinates
+ *   bounds - The subwindow bounds in absolute screen coordinates.
+ *
+ * Returned value:
+ *   None
+ *
+ ****************************************************************************/
+
+EXTERN void nxtk_subwindowclip(FAR struct nxtk_framedwindow_s *fwnd,
+                               FAR struct nxgl_rect_s *dest,
+                               FAR const struct nxgl_rect_s *src,
+                               FAR const struct nxgl_rect_s *bounds);
+
+/****************************************************************************
+ * Name: nxtk_subwindowmove
+ *
+ * Description:
+ *   Perform common clipping operations in preparatons for calling nx_move()
+ *
+ * Input Parameters:
+ *   fwnd       - The framed window within which the move is to be done.
+ *                This must have been previously created by nxtk_openwindow().
+ *   destrect   - The loccation to receive the clipped rectangle relative
+ *                to containing window
+ *   destoffset - The location to received the clipped offset.
+ *   srcrect    - Describes the rectangular region relative to the client
+ *                sub-window to move relative to the sub-window
+ *   srcoffset  - The offset to move the region
+ *   bounds     - The subwindow bounds in absolute screen coordinates.
+ *
+ * Return:
+ *   OK on success; ERROR on failure with errno set appropriately
+ *
+ ****************************************************************************/
+
+EXTERN void nxtk_subwindowmove(FAR struct nxtk_framedwindow_s *fwnd,
+                               FAR struct nxgl_rect_s *destrect,
+                               FAR struct nxgl_point_s *destoffset,
+                               FAR const struct nxgl_rect_s *srcrect,
+                               FAR const struct nxgl_point_s *srcoffset,
+                               FAR const struct nxgl_rect_s *bounds);
 #undef EXTERN
 #if defined(__cplusplus)
 }