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Diffstat (limited to 'nuttx/graphics/nxbe/nxbe_setposition.c')
-rw-r--r-- | nuttx/graphics/nxbe/nxbe_setposition.c | 119 |
1 files changed, 119 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..f407eea3f --- /dev/null +++ b/nuttx/graphics/nxbe/nxbe_setposition.c @@ -0,0 +1,119 @@ +/**************************************************************************** + * graphics/nxbe/nxbe_setposition.c + * + * Copyright (C) 2008-2009, 2011 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 <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_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 before; + 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->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 */ + + nxfe_reportposition(wnd); + + /* 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); +} |