1 files changed, 120 insertions, 0 deletions
diff --git a/gfx.c b/gfx.c
new file mode 100644
index 0000000..ba88134
--- /dev/null
+++ b/gfx.c
@@ -0,0 +1,120 @@
+/*
+ * gfx.c - 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.
+ */
+
+
+#include <stdbool.h>
+
+#include "style.h"
+#include "text.h"
+#include "gfx.h"
+
+
+void *gfx_ctx;
+
+static const struct gfx_ops *gfx_ops;
+
+
+void gfx_line(int sx, int sy, int ex, int ey, int color, unsigned layer)
+{
+	if (gfx_ops->line) {
+		gfx_ops->line(gfx_ctx, sx, sy, ex, ey, color, layer);
+		return;
+	}
+
+	int vx[] = { sx, ex };
+	int vy[] = { sy, ey };
+
+	gfx_poly(2, vx, vy, color, COLOR_NONE, layer);
+}
+
+
+void gfx_rect(int sx, int sy, int ex, int ey,
+    int color, int fill_color, unsigned layer)
+{
+	if (gfx_ops->rect) {
+		gfx_ops->rect(gfx_ctx, sx, sy, ex, ey,
+		    color, fill_color, layer);
+		return;
+	}
+
+	int vx[] = { sx, ex, ex, sx, sx };
+	int vy[] = { sy, sy, ey, ey, sy };
+
+	gfx_poly(5, vx, vy, color, fill_color, layer);
+}
+
+
+void gfx_poly(int points, const int x[points], const int y[points],
+    int color, int fill_color, unsigned layer)
+{
+	gfx_ops->poly(gfx_ctx, points, x, y, color, fill_color, layer);
+}
+
+
+void gfx_circ(int x, int y, int r, int color, int fill_color, unsigned layer)
+{
+	gfx_ops->circ(gfx_ctx, x, y, r, color, fill_color, layer);
+}
+
+
+void gfx_arc(int x, int y, int r, int sa, int ea,
+    int color, int fill_color, unsigned layer)
+{
+	gfx_ops->arc(gfx_ctx, x, y, r, sa, ea, color, fill_color, layer);
+}
+
+
+void gfx_text(int x, int y, const char *s, unsigned size,
+    enum text_align align, int rot, unsigned color, unsigned layer)
+{
+	gfx_ops->text(gfx_ctx, x, y, s, size, align, rot, color, layer);
+}
+
+
+void gfx_tag(const char *s,
+    unsigned points, const int x[points], int const y[points])
+{
+	if (gfx_ops->tag)
+		gfx_ops->tag(gfx_ctx, s, points, x, y);
+}
+
+
+unsigned gfx_text_width(const char *s, unsigned size)
+{
+	return gfx_ops->text_width(gfx_ctx, s, size);
+}
+
+
+void gfx_init(const struct gfx_ops *ops, int argc, char *const *argv)
+{
+	gfx_ctx = ops->init(argc, argv);
+	gfx_ops = ops;
+}
+
+
+void gfx_new_sheet(void)
+{
+	if (gfx_ops->new_sheet)
+		gfx_ops->new_sheet(gfx_ctx);
+}
+
+
+bool gfx_multi_sheet(void)
+{
+	return !!gfx_ops->new_sheet;
+}
+
+void gfx_end(void)
+{
+	if (gfx_ops->end)
+		gfx_ops->end(gfx_ctx);
+}