149 lines
4.2 KiB
C
149 lines
4.2 KiB
C
/****************************************************************************
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* graphics/nxglib/pwfb/pwfb_fillrectangle.c
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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 <stdint.h>
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#include <nuttx/nx/nxglib.h>
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#include <nuttx/nx/nxbe.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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#ifndef NXGLIB_SUFFIX
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# error "NXGLIB_SUFFIX must be defined before including this header file"
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: pwfb_fillrectangle_*bpp
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*
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* Description:
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* Fill a rectangle region in the framebuffer memory with a fixed color
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*
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****************************************************************************/
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void NXGL_FUNCNAME(pwfb_fillrectangle, NXGLIB_SUFFIX)
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(
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FAR struct nxbe_window_s *bwnd,
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FAR const struct nxgl_rect_s *rect,
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NXGL_PIXEL_T color)
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{
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FAR uint8_t *line;
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unsigned int width;
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unsigned int stride;
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int rows;
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#if NXGLIB_BITSPERPIXEL < 8
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FAR uint8_t *dest;
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uint8_t mpixel = NXGL_MULTIPIXEL(color);
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uint8_t leadmask;
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uint8_t tailmask;
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uint8_t mask;
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int lnlen;
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#endif
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/* Get the width of the framebuffer in bytes */
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stride = bwnd->stride;
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/* Get the dimensions of the rectangle to fill in pixels */
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width = rect->pt2.x - rect->pt1.x + 1;
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rows = rect->pt2.y - rect->pt1.y + 1;
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/* Get the address of the first byte in the first line to write */
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line = (FAR uint8_t *)bwnd->fbmem + rect->pt1.y * stride +
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NXGL_SCALEX(rect->pt1.x);
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#if NXGLIB_BITSPERPIXEL < 8
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# ifdef CONFIG_NX_PACKEDMSFIRST
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/* Get the mask for pixels that are ordered so that they pack from the
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* MS byte down.
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*/
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leadmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x)));
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tailmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt2.x - 1)));
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# else
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/* Get the mask for pixels that are ordered so that they pack from the
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* LS byte up.
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*/
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leadmask = (uint8_t)(0xff << (8 - NXGL_REMAINDERX(rect->pt1.x)));
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tailmask = (uint8_t)(0xff >> (8 - NXGL_REMAINDERX(rect->pt1.x - 1)));
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# endif
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#endif
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/* Then fill the rectangle line-by-line */
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while (rows-- > 0)
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{
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#if NXGLIB_BITSPERPIXEL < 8
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/* Handle masking of the fractional initial byte */
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mask = leadmask;
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dest = line;
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lnlen = width;
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if (lnlen > 1 && mask)
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{
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dest[0] = (dest[0] & ~mask) | (mpixel & mask);
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mask = 0xff;
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dest++;
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lnlen--;
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}
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/* Handle masking of the fractional final byte */
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mask &= tailmask;
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if (lnlen > 0 && mask)
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{
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dest[lnlen - 1] = (dest[lnlen - 1] & ~mask) | (mpixel & mask);
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lnlen--;
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}
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/* Handle all of the unmasked bytes in-between */
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if (lnlen > 0)
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{
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NXGL_MEMSET(dest, (NXGL_PIXEL_T)color, lnlen);
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}
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#else
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/* Draw the entire raster line */
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NXGL_MEMSET(line, (NXGL_PIXEL_T)color, width);
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#endif
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line += stride;
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}
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}
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