From 4e8870d1931cff9ecaf0f589b3d987628df98739 Mon Sep 17 00:00:00 2001
From: Werner Almesberger <werner@almesberger.net>
Date: Sat, 30 Jul 2016 23:43:49 -0300
Subject: [PATCH] sch2fig/: make gfx_ops->line optional; add COLOR_WHITE; add
 color map

---
 sch2fig/Makefile |  2 +-
 sch2fig/gfx.c    | 11 ++++++++++-
 sch2fig/style.h  | 11 ++++++++++-
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/sch2fig/Makefile b/sch2fig/Makefile
index aff6edd..2bff7a7 100644
--- a/sch2fig/Makefile
+++ b/sch2fig/Makefile
@@ -11,7 +11,7 @@
 #
 
 NAME = sch2fig
-OBJS = main.o sch.o lib.o fig.o gfx.o dwg.o text.o misc.o
+OBJS = main.o sch.o lib.o style.o fig.o gfx.o dwg.o text.o misc.o
 
 CFLAGS = -g -O -Wall -Wextra -Wno-unused-parameter -Wshadow
 LIBS = -lm
diff --git a/sch2fig/gfx.c b/sch2fig/gfx.c
index f0b4c23..a01c949 100644
--- a/sch2fig/gfx.c
+++ b/sch2fig/gfx.c
@@ -11,6 +11,7 @@
  */
 
 
+#include "style.h"
 #include "text.h"
 #include "gfx.h"
 
@@ -21,7 +22,15 @@ static void *gfx_ctx;
 
 void gfx_line(int sx, int sy, int ex, int ey, int color, unsigned layer)
 {
-	gfx_ops->line(gfx_ctx, sx, sy, ex, ey, color, layer);
+	if (gfx_ops->line) {
+		gfx_ops->line(gfx_ctx, sx, sy, ex, ey, color, layer);
+		return;
+	}
+
+	int vx[] = { sx, ex };
+	int vy[] = { sy, sy };
+
+	gfx_poly(2, vx, vy, color, COLOR_NONE, layer);
 }
 
 
diff --git a/sch2fig/style.h b/sch2fig/style.h
index 89a97df..fc07a05 100644
--- a/sch2fig/style.h
+++ b/sch2fig/style.h
@@ -1,5 +1,5 @@
 /*
- * style.h - FIG drawing style
+ * style.h - Drawing style
  *
  * Written 2016 by Werner Almesberger
  * Copyright 2016 by Werner Almesberger
@@ -13,10 +13,16 @@
 #ifndef STYLE_H
 #define	STYLE_H
 
+#include <stdint.h>
+
+
+/* FIG colors */
+
 #define	COLOR_NONE		-1
 #define	COLOR_BLACK		0
 #define	COLOR_BLUE		1
 #define	COLOR_YELLOW		6
+#define	COLOR_WHITE		7
 #define	COLOR_GREEN4		12
 #define	COLOR_CYAN4		15
 #define	COLOR_CYAN3		16
@@ -77,4 +83,7 @@
 
 #define	NEWLINE_SKIP		1.4	// * text size
 
+
+extern uint32_t color_rgb[];
+
 #endif /* !STYLE_H */