87 lines
2.9 KiB
C
87 lines
2.9 KiB
C
/****************************************************************************
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* graphics/nxbe/nxbe_setposition.c
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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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