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| 1 | /* |
| 2 | * gfx/diff.h - Schematics difference |
| 3 | * |
| 4 | * Written 2016 by Werner Almesberger |
| 5 | * Copyright 2016 by Werner Almesberger |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | |
| 14 | #ifndef GFX_DIFF_H |
| 15 | #define GFX_DIFF_H |
| 16 | |
| 17 | #include <stdint.h> |
| 18 | |
| 19 | #include <cairo/cairo.h> |
| 20 | |
| 21 | #include "gfx/gfx.h" |
| 22 | #include "gfx/cro.h" |
| 23 | |
| 24 | |
| 25 | extern const struct gfx_ops diff_ops; |
| 26 | |
| 27 | |
| 28 | struct area { |
| 29 | int xa, ya, xb, yb; |
| 30 | uint32_t color; |
| 31 | struct area *next; |
| 32 | }; |
| 33 | |
| 34 | |
| 35 | void add_area(struct area **areas, int xa, int ya, int xb, int yb, |
| 36 | uint32_t color); |
| 37 | void free_areas(struct area **areas); |
| 38 | |
| 39 | void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale, |
| 40 | struct cro_ctx *old, struct cro_ctx *new, |
| 41 | const struct area *areas); |
| 42 | |
| 43 | #endif /* !GFX_DIFF_H */ |
| 44 |
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