diff options
Diffstat (limited to 'nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c')
-rw-r--r-- | nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c b/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c new file mode 100644 index 000000000..f82187ae3 --- /dev/null +++ b/nuttx/graphics/nxglib/lcd/nxglib_moverectangle.c @@ -0,0 +1,131 @@ +/**************************************************************************** + * graphics/nxglib/lcd/nxglib_moverectangle.c + * + * Copyright (C) 2010-2011 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 <stdint.h> + +#include <nuttx/lcd/lcd.h> +#include <nuttx/nx/nxglib.h> + +#include "nxglib_bitblit.h" + +/**************************************************************************** + * Pre-Processor Definitions + ****************************************************************************/ + +/**************************************************************************** + * Private Types + ****************************************************************************/ + +/**************************************************************************** + * Private Data + ****************************************************************************/ + +/**************************************************************************** + * Public Data + ****************************************************************************/ + +/**************************************************************************** + * Private Functions + ****************************************************************************/ + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: nxgl_moverectangle_*bpp + * + * Descripton: + * Move a rectangular region from location to another in the + * LCD memory. The source is expressed as a rectangle; the + * destination position is expressed as a point corresponding to the + * translation of the upper, left-hand corner. + * + ****************************************************************************/ + +void NXGL_FUNCNAME(nxgl_moverectangle,NXGLIB_SUFFIX) +(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect, + FAR struct nxgl_point_s *offset) +{ + unsigned int ncols; + unsigned int srcrow; + unsigned int destrow; + + /* Get the width of the rectange to move in pixels. */ + + ncols = rect->pt2.x - rect->pt1.x + 1; + + /* Case 1: The destination position (offset) is above the displayed + * position (rect) + */ + + if (offset->y < rect->pt1.y) + { + /* Copy the rectangle from top down */ + + for (srcrow = rect->pt1.y, destrow = offset->y; + srcrow <= rect->pt2.y; + srcrow++, destrow++) + { + (void)pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols); + (void)pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols); + } + } + + /* Case 2: The destination position (offset) is below the displayed + * position (rect) + */ + + else + { + unsigned int dy = rect->pt2.y - rect->pt1.y; + + /* Copy the rectangle from the bottom up */ + + for (srcrow = rect->pt2.y, destrow = offset->y + dy; + srcrow >= rect->pt1.y; + srcrow--, destrow--) + { + (void)pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols); + (void)pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols); + } + } +} |