100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/****************************************************************************
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* graphics/nxbe/nxbe_setposition.c
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*
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* Copyright (C) 2008-2009, 2011, 2019 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxbe.h"
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#include "nxmu.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxbe_setposition
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*
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* Description:
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* This function checks for intersections and redraws the display after
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* a change in the position of a window.
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*
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****************************************************************************/
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void nxbe_setposition(FAR struct nxbe_window_s *wnd,
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FAR const struct nxgl_point_s *pos)
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{
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struct nxgl_rect_s before;
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struct nxgl_rect_s rect;
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DEBUGASSERT(wnd != NULL && pos != NULL);
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/* Back out the old window origin position from the bounding box */
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nxgl_rectoffset(&rect,
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&wnd->bounds,
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-wnd->bounds.pt1.x,
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-wnd->bounds.pt1.y);
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/* Add the new window origin into the bounding box */
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nxgl_rectcopy(&before, &wnd->bounds);
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nxgl_rectoffset(&wnd->bounds, &rect, pos->x, pos->y);
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/* Get the union of the 'before' bounding box and the 'after' bounding
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* this union is the region of the display that must be updated.
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*/
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nxgl_rectunion(&rect, &before, &wnd->bounds);
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nxgl_rectintersect(&rect, &rect, &wnd->be->bkgd.bounds);
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/* Report the new size/position */
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nxmu_reportposition(wnd);
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/* Then redraw this window AND all windows below it. Having moved the
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* window, we may have exposed previously obscured portions of windows
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* below this one.
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*/
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nxbe_redrawbelow(wnd->be, wnd, &rect);
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}
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