px4-firmware/nuttx/graphics/nxbe/nxbe_setsize.c

122 lines
4.5 KiB
C

/****************************************************************************
* graphics/nxbe/nxbe_setsize.c
*
* Copyright (C) 2008-2009, 2011 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 <nuttx/nx/nxglib.h>
#include "nxbe.h"
#include "nxfe.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxbe_setsize
*
* Descripton:
* This function checks for intersections and redraws the display after
* a change in the size of a window.
*
****************************************************************************/
void nxbe_setsize(FAR struct nxbe_window_s *wnd,
FAR const struct nxgl_size_s *size)
{
struct nxgl_rect_s bounds;
#ifdef CONFIG_DEBUG
if (!wnd)
{
return;
}
#endif
/* Save the before size of the window's bounding box */
nxgl_rectcopy(&bounds, &wnd->bounds);
/* Add the window origin to the supplied size get the new window bounding box */
wnd->bounds.pt2.x = wnd->bounds.pt1.x + size->w - 1;
wnd->bounds.pt2.y = wnd->bounds.pt1.y + size->h - 1;
/* Clip the new bounding box so that lies within the background screen */
nxgl_rectintersect(&wnd->bounds, &wnd->bounds, &wnd->be->bkgd.bounds);
/* We need to update the larger of the two rectangles. That will be the
* union of the before and after sizes.
*/
nxgl_rectunion(&bounds, &bounds, &wnd->bounds);
/* Report the new size/position */
nxfe_reportposition(wnd);
/* Then redraw this window AND all windows below it. Having resized the
* window, we may have exposed previoulsy obscured portions of windows
* below this one.
*/
nxbe_redrawbelow(wnd->be, wnd, &bounds);
}