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- /****************************************************************************
- * graphics/nxbe/nxbe_setposition.c
- *
- * Copyright (C) 2008-2009, 2011, 2019 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * 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 <assert.h>
- #include <nuttx/nx/nxglib.h>
- #include "nxbe.h"
- #include "nxmu.h"
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxbe_setposition
- *
- * Description:
- * 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 before;
- struct nxgl_rect_s rect;
- DEBUGASSERT(wnd != NULL && pos != NULL);
- /* Back out the old window origin position from the bounding box */
- nxgl_rectoffset(&rect, &wnd->bounds, -wnd->bounds.pt1.x, -wnd->bounds.pt1.y);
- /* Add the new window origin into the bounding box */
- nxgl_rectcopy(&before, &wnd->bounds);
- nxgl_rectoffset(&wnd->bounds, &rect, pos->x, pos->y);
- /* Get the union of the 'before' bounding box and the 'after' bounding
- * this union is the region of the display that must be updated.
- */
- nxgl_rectunion(&rect, &before, &wnd->bounds);
- nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
- /* Report the new size/position */
- nxmu_reportposition(wnd);
- /* Then redraw this window AND all windows below it. Having moved the
- * window, we may have exposed previously obscured portions of windows
- * below this one.
- */
- nxbe_redrawbelow(wnd->be, wnd, &rect);
- }
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