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-rw-r--r--gfx.h72
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diff --git a/gfx.h b/gfx.h
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+/*
+ * gfx.h - Generate graphical output for Eeschema items
+ *
+ * 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_H
+#define GFX_H
+
+#include <stdbool.h>
+
+#include "text.h"
+
+
+struct gfx_ops {
+ const char *name;
+ void (*line)(void *ctx, int sx, int sy, int ex, int ey,
+ int color, unsigned layer);
+ void (*rect)(void *ctx, int sx, int sy, int ex, int ey,
+ int color, int fill_color, unsigned layer);
+ void (*poly)(void *ctx,
+ int points, const int x[points], const int y[points],
+ int color, int fill_color, unsigned layer);
+ void (*circ)(void *ctx, int x, int y, int r,
+ int color, int fill_color, unsigned layer);
+ void (*arc)(void *ctx, int x, int y, int r, int sa, int ea,
+ int color, int fill_color, unsigned layer);
+ void (*text)(void *ctx, int x, int y, const char *s, unsigned size,
+ enum text_align align, int rot, unsigned color, unsigned layer);
+ void (*tag)(void *ctx, const char *s,
+ int points, const int x[points], const int y[points]);
+ unsigned (*text_width)(void *ctx, const char *s, unsigned size);
+ void *(*init)(int argc, char *const *argv);
+ void (*new_sheet)(void *ctx);
+ void (*end)(void *ctx);
+};
+
+
+extern void *gfx_ctx;
+
+
+/* wrappers */
+
+void gfx_line(int sx, int sy, int ex, int ey, int color, unsigned layer);
+void gfx_rect(int sx, int sy, int ex, int ey,
+ int color, int fill_color, unsigned layer);
+void gfx_poly(int points, const int x[points], const int y[points],
+ int color, int fill_color, unsigned layer);
+void gfx_circ(int x, int y, int r, int color, int fill_color, unsigned layer);
+void gfx_arc(int x, int y, int r, int sa, int ea,
+ int color, int fill_color, unsigned layer);
+void gfx_text(int x, int y, const char *s, unsigned size,
+ enum text_align align, int rot, unsigned color, unsigned layer);
+void gfx_tag(const char *s,
+ unsigned points, const int x[points], int const y[points]);
+unsigned gfx_text_width(const char *s, unsigned size);
+
+/* inititalization and termination */
+
+void gfx_init(const struct gfx_ops *ops, int argc, char *const *argv);
+void gfx_new_sheet(void);
+bool gfx_multi_sheet(void);
+void gfx_end(void);
+
+#endif /* !GFX_H */