Graphics backend

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1320 42af7a65-404d-4744-a932-0658087f49c3

1 files changed, 124 insertions, 0 deletions

diff --git a/nuttx/graphics/nxbe/nxbe_setposition.c b/nuttx/graphics/nxbe/nxbe_setposition.c
new file mode 100644
index 000000000..13e100eda
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+++ b/nuttx/graphics/nxbe/nxbe_setposition.c
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+/****************************************************************************
+ * graphics/nxbe/nxbe_setposition.c
+ *
+ *   Copyright (C) 2008 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <sys/types.h>
+
+#include <nuttx/nx.h>
+
+#include "nxbe.h"
+#include "nxfe.h"
+
+/****************************************************************************
+ * Pre-Processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: nxbe_setposition
+ *
+ * Descripton:
+ *   This function checks for intersections and redraws the display after
+ *   a change in the position of a window.
+ *
+ ****************************************************************************/
+
+void nxbe_setposition(FAR struct nxbe_window_s *wnd,
+                      FAR const struct nxgl_point_s *pos)
+{
+  struct nxgl_rect_s rect;
+
+#ifdef CONFIG_DEBUG
+  if (!wnd)
+    {
+      return;
+    }
+#endif
+
+  /* Back out the old window origin position from the bounding box */
+
+  nxgl_rectoffset(&rect, &wnd->bounds, -wnd->origin.x, -wnd->origin.y);
+
+  /* Set the new origin */
+
+  wnd->origin.x = pos->x;
+  wnd->origin.y = pos->y;
+
+  /* Add the new window origin back into the bounding box */
+
+  nxgl_rectoffset(&wnd->bounds, &rect, wnd->origin.x, wnd->origin.y);
+
+  /* Clip the rectangle so that is lies with the screen defined by the
+   * background window.
+   */
+
+  nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
+
+  /* Then redraw this window AND all windows below it. Having moved the
+   * window, we may have exposed previoulsy obscured portions of windows
+   * below this one.
+   */
+
+  nxbe_redrawbelow(wnd->be, wnd, &rect);
+
+  /* Report the new size/position */
+
+#ifdef CONFIG_NX_MULTIUSER
+  nxmu_getposition(wnd);
+#endif
+}