112 lines
4.0 KiB
C
112 lines
4.0 KiB
C
/****************************************************************************
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* graphics/nxglib/lcd/nxglib_moverectangle.c
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*
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* Copyright (C) 2010-2011 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 <stdint.h>
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#include <nuttx/lcd/lcd.h>
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#include <nuttx/nx/nxglib.h>
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#include "nxglib_bitblit.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: nxgl_moverectangle_*bpp
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*
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* Description:
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* Move a rectangular region from location to another in the
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* LCD memory. The source is expressed as a rectangle; the
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* destination position is expressed as a point corresponding to the
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* translation of the upper, left-hand corner.
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*
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****************************************************************************/
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void NXGL_FUNCNAME(nxgl_moverectangle, NXGLIB_SUFFIX)
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(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect,
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FAR struct nxgl_point_s *offset)
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{
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unsigned int ncols;
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unsigned int srcrow;
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unsigned int destrow;
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/* Get the width of the rectangle to move in pixels. */
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ncols = rect->pt2.x - rect->pt1.x + 1;
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/* Case 1: The destination position (offset) is above the displayed
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* position (rect)
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*/
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if (offset->y < rect->pt1.y)
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{
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/* Copy the rectangle from top down */
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for (srcrow = rect->pt1.y, destrow = offset->y;
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srcrow <= rect->pt2.y;
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srcrow++, destrow++)
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{
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pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols);
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pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols);
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}
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}
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/* Case 2: The destination position (offset) is below the displayed
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* position (rect)
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*/
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else
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{
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unsigned int dy = rect->pt2.y - rect->pt1.y;
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/* Copy the rectangle from the bottom up */
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for (srcrow = rect->pt2.y, destrow = offset->y + dy;
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srcrow >= rect->pt1.y;
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srcrow--, destrow--)
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{
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pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols);
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pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols);
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}
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}
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}
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