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+/*
+ * gfx/diff.h - Schematics difference
+ *
+ * Written 2016 by Werner Almesberger
+ * Copyright 2016 by Werner Almesberger
+ *
+ * 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.
+ */
+
+
+#ifndef GFX_DIFF_H
+#define GFX_DIFF_H
+
+#include <cairo/cairo.h>
+
+#include "gfx/gfx.h"
+#include "gfx/cro.h"
+
+
+extern const struct gfx_ops diff_ops;
+
+
+void diff_to_canvas(cairo_t *cr, int cx, int cy, float scale,
+ struct cro_ctx *old, struct cro_ctx *new);
+
+#endif /* !GFX_DIFF_H */