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/*
* Copyright © 2016 Keith Packard <keithp@keithp.com>
*
* 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_ */
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