347bc09e47
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@1314 42af7a65-404d-4744-a932-0658087f49c3
127 lines
4.6 KiB
C
127 lines
4.6 KiB
C
/****************************************************************************
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* graphics/nxglib/nxglib_moverectangle.c
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*
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* Copyright (C) 2008 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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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 <sys/types.h>
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#include <nuttx/fb.h>
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#include <nuttx/nxglib.h>
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#include "nxglib_bitblit.h"
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/****************************************************************************
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* Pre-Processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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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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* Descripton:
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* Move a rectangular region from location to another in the
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* framebuffer memory.
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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 fb_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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const ubyte *sptr;
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ubyte *dptr;
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unsigned int width;
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unsigned int stride;
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unsigned int rows;
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/* Get the width of the framebuffer in bytes */
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stride = pinfo->stride;
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/* Get the dimensions of the rectange to fill: height in rows and width in bytes */
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width = NXGL_SCALEX(rect->pt2.x - rect->pt1.x);
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rows = rect->pt2.y - rect->pt1.y;
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/* Case 1: The starting position is above the display */
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if (offset->y < 0)
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{
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dptr = pinfo->fbmem + rect->pt1.y * stride + NXGL_SCALEX(rect->pt1.x);
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sptr = dptr - offset->y * stride - NXGL_SCALEX(offset->x);
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while (rows--)
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{
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NXGL_MEMCPY(dptr, sptr, width);
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dptr += stride;
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sptr += stride;
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}
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}
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else
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{
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dptr = pinfo->fbmem + rect->pt2.y * stride + NXGL_SCALEX(rect->pt1.x);
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sptr = dptr - offset->y * stride - NXGL_SCALEX(offset->x);
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while (rows--)
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{
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dptr -= stride;
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sptr -= stride;
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NXGL_MEMCPY(dptr, sptr, width);
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}
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}
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}
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