552 lines
17 KiB
C
552 lines
17 KiB
C
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/*
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* File : dc_blend.c
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* This file is part of RT-Thread GUI
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* COPYRIGHT (C) 2006 - 2013, RT-Thread Development Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Change Logs:
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* Date Author Notes
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* 2013-10-04 Bernard porting SDL software render to RT-Thread GUI
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*/
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/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef __DC_DRAW_H__
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#define __DC_DRAW_H__
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#include <rtgui/blit.h>
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/* This code assumes that r, g, b, a are the source color,
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* and in the blend and add case, the RGB values are premultiplied by a.
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*/
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#define DRAW_MUL(_a, _b) (((unsigned)(_a)*(_b))/256)
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#define DRAW_FASTSETPIXEL(type) \
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*pixel = (type) color
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#define DRAW_FASTSETPIXEL1 DRAW_FASTSETPIXEL(rt_uint8_t)
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#define DRAW_FASTSETPIXEL2 DRAW_FASTSETPIXEL(rt_uint16_t)
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#define DRAW_FASTSETPIXEL4 DRAW_FASTSETPIXEL(rt_uint32_t)
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#define DRAW_FASTSETPIXELXY(x, y, type, bpp, color) \
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*(type *)(_dc_get_pixel(dst, x, y))= (type) color
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#define DRAW_FASTSETPIXELXY1(x, y) DRAW_FASTSETPIXELXY(x, y, rt_uint8_t, 1, color)
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#define DRAW_FASTSETPIXELXY2(x, y) DRAW_FASTSETPIXELXY(x, y, rt_uint16_t, 2, color)
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#define DRAW_FASTSETPIXELXY4(x, y) DRAW_FASTSETPIXELXY(x, y, rt_uint32_t, 4, color)
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#define DRAW_SETPIXEL(setpixel) \
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do { \
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unsigned sr = r, sg = g, sb = b, sa = a; (void) sa; \
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setpixel; \
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} while (0)
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#define DRAW_SETPIXEL_BLEND(getpixel, setpixel) \
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do { \
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unsigned sr, sg, sb, sa; (void) sa; \
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getpixel; \
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sr = DRAW_MUL(inva, sr) + r; \
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sg = DRAW_MUL(inva, sg) + g; \
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sb = DRAW_MUL(inva, sb) + b; \
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setpixel; \
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} while (0)
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#define DRAW_SETPIXEL_ADD(getpixel, setpixel) \
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do { \
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unsigned sr, sg, sb, sa; (void) sa; \
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getpixel; \
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sr += r; if (sr > 0xff) sr = 0xff; \
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sg += g; if (sg > 0xff) sg = 0xff; \
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sb += b; if (sb > 0xff) sb = 0xff; \
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setpixel; \
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} while (0)
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#define DRAW_SETPIXEL_MOD(getpixel, setpixel) \
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do { \
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unsigned sr, sg, sb, sa; (void) sa; \
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getpixel; \
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sr = DRAW_MUL(sr, r); \
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sg = DRAW_MUL(sg, g); \
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sb = DRAW_MUL(sb, b); \
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setpixel; \
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} while (0)
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#define DRAW_SETPIXELXY(x, y, type, bpp, op) \
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do { \
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type *pixel = (type *)(_dc_get_pixel(dst, x, y));\
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op; \
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} while (0)
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/*
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* Define draw operators for RGB555
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*/
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#define DRAW_SETPIXEL_RGB555 \
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DRAW_SETPIXEL(RGB555_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_BLEND_RGB555 \
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DRAW_SETPIXEL_BLEND(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
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RGB555_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_ADD_RGB555 \
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DRAW_SETPIXEL_ADD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
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RGB555_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_MOD_RGB555 \
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DRAW_SETPIXEL_MOD(RGB_FROM_RGB555(*pixel, sr, sg, sb), \
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RGB555_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXELXY_RGB555(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_RGB555)
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#define DRAW_SETPIXELXY_BLEND_RGB555(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_BLEND_RGB555)
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#define DRAW_SETPIXELXY_ADD_RGB555(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_ADD_RGB555)
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#define DRAW_SETPIXELXY_MOD_RGB555(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_MOD_RGB555)
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/*
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* Define draw operators for RGB565
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*/
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#define DRAW_SETPIXEL_RGB565 \
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DRAW_SETPIXEL(RGB565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_BLEND_RGB565 \
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DRAW_SETPIXEL_BLEND(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
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RGB565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_ADD_RGB565 \
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DRAW_SETPIXEL_ADD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
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RGB565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_MOD_RGB565 \
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DRAW_SETPIXEL_MOD(RGB_FROM_RGB565(*pixel, sr, sg, sb), \
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RGB565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXELXY_RGB565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_RGB565)
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#define DRAW_SETPIXELXY_BLEND_RGB565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_BLEND_RGB565)
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#define DRAW_SETPIXELXY_ADD_RGB565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_ADD_RGB565)
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#define DRAW_SETPIXELXY_MOD_RGB565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_MOD_RGB565)
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/*
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* Define draw operators for BGR565
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*/
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#define DRAW_SETPIXEL_BGR565 \
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DRAW_SETPIXEL(BGR565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_BLEND_BGR565 \
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DRAW_SETPIXEL_BLEND(RGB_FROM_BGR565(*pixel, sr, sg, sb), \
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BGR565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_ADD_BGR565 \
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DRAW_SETPIXEL_ADD(RGB_FROM_BGR565(*pixel, sr, sg, sb), \
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BGR565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_MOD_BGR565 \
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DRAW_SETPIXEL_MOD(RGB_FROM_BGR565(*pixel, sr, sg, sb), \
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BGR565_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXELXY_BGR565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_BGR565)
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#define DRAW_SETPIXELXY_BLEND_BGR565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_BLEND_BGR565)
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#define DRAW_SETPIXELXY_ADD_BGR565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_ADD_BGR565)
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#define DRAW_SETPIXELXY_MOD_BGR565(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint16_t, 2, DRAW_SETPIXEL_MOD_BGR565)
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/*
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* Define draw operators for RGB888
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*/
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#define DRAW_SETPIXEL_RGB888 \
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DRAW_SETPIXEL(RGB888_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_BLEND_RGB888 \
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DRAW_SETPIXEL_BLEND(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
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RGB888_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_ADD_RGB888 \
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DRAW_SETPIXEL_ADD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
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RGB888_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXEL_MOD_RGB888 \
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DRAW_SETPIXEL_MOD(RGB_FROM_RGB888(*pixel, sr, sg, sb), \
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RGB888_FROM_RGB(*pixel, sr, sg, sb))
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#define DRAW_SETPIXELXY_RGB888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_RGB888)
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#define DRAW_SETPIXELXY_BLEND_RGB888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_BLEND_RGB888)
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#define DRAW_SETPIXELXY_ADD_RGB888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_ADD_RGB888)
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#define DRAW_SETPIXELXY_MOD_RGB888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_MOD_RGB888)
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/*
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* Define draw operators for ARGB8888
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*/
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#define DRAW_SETPIXEL_ARGB8888 \
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DRAW_SETPIXEL(ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
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#define DRAW_SETPIXEL_BLEND_ARGB8888 \
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DRAW_SETPIXEL_BLEND(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
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ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
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#define DRAW_SETPIXEL_ADD_ARGB8888 \
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DRAW_SETPIXEL_ADD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
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ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
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#define DRAW_SETPIXEL_MOD_ARGB8888 \
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DRAW_SETPIXEL_MOD(RGBA_FROM_ARGB8888(*pixel, sr, sg, sb, sa), \
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ARGB8888_FROM_RGBA(*pixel, sr, sg, sb, sa))
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#define DRAW_SETPIXELXY_ARGB8888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_ARGB8888)
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#define DRAW_SETPIXELXY_BLEND_ARGB8888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_BLEND_ARGB8888)
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#define DRAW_SETPIXELXY_ADD_ARGB8888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_ADD_ARGB8888)
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#define DRAW_SETPIXELXY_MOD_ARGB8888(x, y) \
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DRAW_SETPIXELXY(x, y, rt_uint32_t, 4, DRAW_SETPIXEL_MOD_ARGB8888)
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/*
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* Define line drawing macro
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*/
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#define ABS(_x) ((_x) < 0 ? -(_x) : (_x))
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/* Horizontal line */
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#define HLINE(type, op, draw_end) \
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{ \
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int length; \
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type *pixel; \
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if (x1 <= x2) { \
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pixel = (type *)_dc_get_pixel(dst, x1, y1); \
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length = draw_end ? (x2-x1+1) : (x2-x1); \
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} else { \
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pixel = (type *)_dc_get_pixel(dst, x2, y1); \
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if (!draw_end) { \
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++pixel; \
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} \
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length = draw_end ? (x1-x2+1) : (x1-x2); \
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} \
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while (length--) { \
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op; \
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++pixel; \
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} \
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}
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/* Vertical line */
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#define VLINE(type, op, draw_end) \
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{ \
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int length; \
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int pitch = _dc_get_pitch(dst)/(_UI_BITBYTES(_dc_get_bits_per_pixel(dst))); \
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type *pixel; \
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if (y1 <= y2) { \
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pixel = (type *)_dc_get_pixel(dst, x1, y1); \
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length = draw_end ? (y2-y1+1) : (y2-y1); \
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} else { \
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pixel = (type *)_dc_get_pixel(dst, x1, y2); \
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if (!draw_end) { \
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pixel += pitch; \
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} \
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length = draw_end ? (y1-y2+1) : (y1-y2); \
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} \
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while (length--) { \
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op; \
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pixel += pitch; \
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} \
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}
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/* Diagonal line */
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#define DLINE(type, op, draw_end) \
|
||
|
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{ \
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||
|
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int length; \
|
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|
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int pitch = _dc_get_pitch(dst)/(_UI_BITBYTES(_dc_get_bits_per_pixel(dst))); \
|
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|
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type *pixel; \
|
||
|
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if (y1 <= y2) { \
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pixel = (type *)_dc_get_pixel(dst, x1, y1); \
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if (x1 <= x2) { \
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++pitch; \
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||
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} else { \
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--pitch; \
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||
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} \
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length = (y2-y1); \
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||
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} else { \
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||
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pixel = (type *)_dc_get_pixel(dst, x2, y2); \
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||
|
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if (x2 <= x1) { \
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||
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++pitch; \
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||
|
|
} else { \
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--pitch; \
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||
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} \
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||
|
|
if (!draw_end) { \
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||
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pixel += pitch; \
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||
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} \
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length = (y1-y2); \
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||
|
|
} \
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||
|
|
if (draw_end) { \
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||
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++length; \
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||
|
|
} \
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||
|
|
while (length--) { \
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||
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op; \
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pixel += pitch; \
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||
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} \
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||
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|
}
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|
|
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||
|
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/* Bresenham's line algorithm */
|
||
|
|
#define BLINE(x1, y1, x2, y2, op, draw_end) \
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{ \
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||
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int i, deltax, deltay, numpixels; \
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int d, dinc1, dinc2; \
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||
|
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int x, xinc1, xinc2; \
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|
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int y, yinc1, yinc2; \
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\
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deltax = ABS(x2 - x1); \
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deltay = ABS(y2 - y1); \
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\
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||
|
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if (deltax >= deltay) { \
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numpixels = deltax + 1; \
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d = (2 * deltay) - deltax; \
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dinc1 = deltay * 2; \
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dinc2 = (deltay - deltax) * 2; \
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xinc1 = 1; \
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xinc2 = 1; \
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yinc1 = 0; \
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|
yinc2 = 1; \
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|
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} else { \
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|
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numpixels = deltay + 1; \
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|
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d = (2 * deltax) - deltay; \
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||
|
|
dinc1 = deltax * 2; \
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||
|
|
dinc2 = (deltax - deltay) * 2; \
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||
|
|
xinc1 = 0; \
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||
|
|
xinc2 = 1; \
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||
|
|
yinc1 = 1; \
|
||
|
|
yinc2 = 1; \
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||
|
|
} \
|
||
|
|
\
|
||
|
|
if (x1 > x2) { \
|
||
|
|
xinc1 = -xinc1; \
|
||
|
|
xinc2 = -xinc2; \
|
||
|
|
} \
|
||
|
|
if (y1 > y2) { \
|
||
|
|
yinc1 = -yinc1; \
|
||
|
|
yinc2 = -yinc2; \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
x = x1; \
|
||
|
|
y = y1; \
|
||
|
|
\
|
||
|
|
if (!draw_end) { \
|
||
|
|
--numpixels; \
|
||
|
|
} \
|
||
|
|
for (i = 0; i < numpixels; ++i) { \
|
||
|
|
op(x, y); \
|
||
|
|
if (d < 0) { \
|
||
|
|
d += dinc1; \
|
||
|
|
x += xinc1; \
|
||
|
|
y += yinc1; \
|
||
|
|
} else { \
|
||
|
|
d += dinc2; \
|
||
|
|
x += xinc2; \
|
||
|
|
y += yinc2; \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Xiaolin Wu's line algorithm, based on Michael Abrash's implementation */
|
||
|
|
#define WULINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end) \
|
||
|
|
{ \
|
||
|
|
rt_uint16_t ErrorAdj, ErrorAcc; \
|
||
|
|
rt_uint16_t ErrorAccTemp, Weighting; \
|
||
|
|
int DeltaX, DeltaY, Temp, XDir; \
|
||
|
|
unsigned r, g, b, a, inva; \
|
||
|
|
\
|
||
|
|
/* remove compiling warning */ \
|
||
|
|
r = 0; g = 0; b = 0; a = 0; \
|
||
|
|
inva = 0; inva = inva; \
|
||
|
|
/* Draw the initial pixel, which is always exactly intersected by \
|
||
|
|
the line and so needs no weighting */ \
|
||
|
|
opaque_op(x1, y1); \
|
||
|
|
\
|
||
|
|
/* Draw the final pixel, which is always exactly intersected by the line \
|
||
|
|
and so needs no weighting */ \
|
||
|
|
if (draw_end) { \
|
||
|
|
opaque_op(x2, y2); \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
/* Make sure the line runs top to bottom */ \
|
||
|
|
if (y1 > y2) { \
|
||
|
|
Temp = y1; y1 = y2; y2 = Temp; \
|
||
|
|
Temp = x1; x1 = x2; x2 = Temp; \
|
||
|
|
} \
|
||
|
|
DeltaY = y2 - y1; \
|
||
|
|
\
|
||
|
|
if ((DeltaX = x2 - x1) >= 0) { \
|
||
|
|
XDir = 1; \
|
||
|
|
} else { \
|
||
|
|
XDir = -1; \
|
||
|
|
DeltaX = -DeltaX; /* make DeltaX positive */ \
|
||
|
|
} \
|
||
|
|
\
|
||
|
|
/* line is not horizontal, diagonal, or vertical */ \
|
||
|
|
ErrorAcc = 0; /* initialize the line error accumulator to 0 */ \
|
||
|
|
\
|
||
|
|
/* Is this an X-major or Y-major line? */ \
|
||
|
|
if (DeltaY > DeltaX) { \
|
||
|
|
/* Y-major line; calculate 16-bit fixed-point fractional part of a \
|
||
|
|
pixel that X advances each time Y advances 1 pixel, truncating the \
|
||
|
|
result so that we won't overrun the endpoint along the X axis */ \
|
||
|
|
ErrorAdj = ((unsigned long) DeltaX << 16) / (unsigned long) DeltaY; \
|
||
|
|
/* Draw all pixels other than the first and last */ \
|
||
|
|
while (--DeltaY) { \
|
||
|
|
ErrorAccTemp = ErrorAcc; /* remember current accumulated error */ \
|
||
|
|
ErrorAcc += ErrorAdj; /* calculate error for next pixel */ \
|
||
|
|
if (ErrorAcc <= ErrorAccTemp) { \
|
||
|
|
/* The error accumulator turned over, so advance the X coord */ \
|
||
|
|
x1 += XDir; \
|
||
|
|
} \
|
||
|
|
y1++; /* Y-major, so always advance Y */ \
|
||
|
|
/* The IntensityBits most significant bits of ErrorAcc give us the \
|
||
|
|
intensity weighting for this pixel, and the complement of the \
|
||
|
|
weighting for the paired pixel */ \
|
||
|
|
Weighting = ErrorAcc >> 8; \
|
||
|
|
{ \
|
||
|
|
a = DRAW_MUL(_a, (Weighting ^ 255)); \
|
||
|
|
r = DRAW_MUL(_r, a); \
|
||
|
|
g = DRAW_MUL(_g, a); \
|
||
|
|
b = DRAW_MUL(_b, a); \
|
||
|
|
inva = (a ^ 0xFF); \
|
||
|
|
blend_op(x1, y1); \
|
||
|
|
} \
|
||
|
|
{ \
|
||
|
|
a = DRAW_MUL(_a, Weighting); \
|
||
|
|
r = DRAW_MUL(_r, a); \
|
||
|
|
g = DRAW_MUL(_g, a); \
|
||
|
|
b = DRAW_MUL(_b, a); \
|
||
|
|
inva = (a ^ 0xFF); \
|
||
|
|
blend_op(x1 + XDir, y1); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
} else { \
|
||
|
|
/* X-major line; calculate 16-bit fixed-point fractional part of a \
|
||
|
|
pixel that Y advances each time X advances 1 pixel, truncating the \
|
||
|
|
result to avoid overrunning the endpoint along the X axis */ \
|
||
|
|
ErrorAdj = ((unsigned long) DeltaY << 16) / (unsigned long) DeltaX; \
|
||
|
|
/* Draw all pixels other than the first and last */ \
|
||
|
|
while (--DeltaX) { \
|
||
|
|
ErrorAccTemp = ErrorAcc; /* remember currrent accumulated error */ \
|
||
|
|
ErrorAcc += ErrorAdj; /* calculate error for next pixel */ \
|
||
|
|
if (ErrorAcc <= ErrorAccTemp) { \
|
||
|
|
/* The error accumulator turned over, so advance the Y coord */ \
|
||
|
|
y1++; \
|
||
|
|
} \
|
||
|
|
x1 += XDir; /* X-major, so always advance X */ \
|
||
|
|
/* The IntensityBits most significant bits of ErrorAcc give us the \
|
||
|
|
intensity weighting for this pixel, and the complement of the \
|
||
|
|
weighting for the paired pixel */ \
|
||
|
|
Weighting = ErrorAcc >> 8; \
|
||
|
|
{ \
|
||
|
|
a = DRAW_MUL(_a, (Weighting ^ 255)); \
|
||
|
|
r = DRAW_MUL(_r, a); \
|
||
|
|
g = DRAW_MUL(_g, a); \
|
||
|
|
b = DRAW_MUL(_b, a); \
|
||
|
|
inva = (a ^ 0xFF); \
|
||
|
|
blend_op(x1, y1); \
|
||
|
|
} \
|
||
|
|
{ \
|
||
|
|
a = DRAW_MUL(_a, Weighting); \
|
||
|
|
r = DRAW_MUL(_r, a); \
|
||
|
|
g = DRAW_MUL(_g, a); \
|
||
|
|
b = DRAW_MUL(_b, a); \
|
||
|
|
inva = (a ^ 0xFF); \
|
||
|
|
blend_op(x1, y1 + 1); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
}
|
||
|
|
|
||
|
|
#define AALINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end) \
|
||
|
|
WULINE(x1, y1, x2, y2, opaque_op, blend_op, draw_end)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Define fill rect macro
|
||
|
|
*/
|
||
|
|
#define FILLRECT(type, op) \
|
||
|
|
do { \
|
||
|
|
int width = rect->x2 - rect->x1; \
|
||
|
|
int height = rect->y2 - rect->y1; \
|
||
|
|
int pitch = _dc_get_pitch(dst)/(_UI_BITBYTES(_dc_get_bits_per_pixel(dst))); \
|
||
|
|
int skip = pitch - width; \
|
||
|
|
type *pixel = (type *)_dc_get_pixel(dst, rect->x1, rect->y1); \
|
||
|
|
while (height--) { \
|
||
|
|
{ int n = (width+3)/4; \
|
||
|
|
switch (width & 3) { \
|
||
|
|
case 0: do { op; pixel++; \
|
||
|
|
case 3: op; pixel++; \
|
||
|
|
case 2: op; pixel++; \
|
||
|
|
case 1: op; pixel++; \
|
||
|
|
} while ( --n > 0 ); \
|
||
|
|
} \
|
||
|
|
} \
|
||
|
|
pixel += skip; \
|
||
|
|
} \
|
||
|
|
} while (0)
|
||
|
|
|
||
|
|
#endif
|