/* * Copyright © 2016 Keith Packard * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. */ #ifndef _AO_DRAW_H_ #define _AO_DRAW_H_ struct ao_bitmap { uint32_t *base; int16_t stride; /* in units */ int16_t width; /* in pixels */ int16_t height; /* in pixels */ }; struct ao_pattern { uint8_t pattern[8]; }; void ao_copy(const struct ao_bitmap *dst, int16_t dst_x, int16_t dst_y, int16_t width, int16_t height, const struct ao_bitmap *src, int16_t src_x, int16_t src_y, uint8_t rop); void ao_rect(const struct ao_bitmap *dst, int16_t x, int16_t y, int16_t width, int16_t height, uint32_t fill, uint8_t rop); void ao_pattern(const struct ao_bitmap *dst, int16_t x, int16_t y, int16_t width, int16_t height, const struct ao_pattern *pattern, int16_t pat_x, int16_t pat_y, uint8_t rop); void ao_line(const struct ao_bitmap *dst, int16_t x1, int16_t y1, int16_t x2, int16_t y2, uint32_t fill, uint8_t rop); void ao_text(const struct ao_bitmap *dst, int16_t x, int16_t y, char *string, uint32_t fill, uint8_t rop); struct ao_font { int width; int height; int ascent; int descent; }; extern const struct ao_font ao_font; #define AO_SHIFT 5 #define AO_UNIT (1 << AO_SHIFT) #define AO_MASK (AO_UNIT - 1) #define AO_ALLONES ((uint32_t) -1) /* * dst * 0 1 * * 0 a b * src * 1 c d * * ROP = abcd */ #define AO_CLEAR 0x0 /* 0 */ #define AO_AND 0x1 /* src AND dst */ #define AO_AND_REVERSE 0x2 /* src AND NOT dst */ #define AO_COPY 0x3 /* src */ #define AO_AND_INVERTED 0x4 /* NOT src AND dst */ #define AO_NOOP 0x5 /* dst */ #define AO_XOR 0x6 /* src XOR dst */ #define AO_OR 0x7 /* src OR dst */ #define AO_NOR 0x8 /* NOT src AND NOT dst */ #define AO_EQUIV 0x9 /* NOT src XOR dst */ #define AO_INVERT 0xa /* NOT dst */ #define AO_OR_REVERSE 0xb /* src OR NOT dst */ #define AO_COPY_INVERTED 0xc /* NOT src */ #define AO_OR_INVERTED 0xd /* NOT src OR dst */ #define AO_NAND 0xe /* NOT src OR NOT dst */ #define AO_SET 0xf /* 1 */ #endif /* _AO_DRAW_H_ */