From dac0181028f2e02f44dd258e91d2df66975c3b89 Mon Sep 17 00:00:00 2001
From: Tor Andersson <tor@ghostscript.com>
Date: Wed, 29 Dec 2010 01:52:21 +0000
Subject: Support linear shadings as a special case in the fitz shading struct
 and renderer.

---
 fitz/fitz.h      | 10 ++++++++++
 fitz/res_shade.c | 12 ++++++++++++
 2 files changed, 22 insertions(+)

(limited to 'fitz')

diff --git a/fitz/fitz.h b/fitz/fitz.h
index 99751b3e..3275dc4e 100644
--- a/fitz/fitz.h
+++ b/fitz/fitz.h
@@ -795,6 +795,13 @@ fz_text *fz_clonetext(fz_text *old);
  * The shading code uses gouraud shaded triangle meshes.
  */
 
+enum
+{
+	FZ_LINEAR,
+	FZ_RADIAL,
+	FZ_MESH,
+};
+
 typedef struct fz_shade_s fz_shade;
 
 struct fz_shade_s
@@ -811,6 +818,9 @@ struct fz_shade_s
 	int usefunction;
 	float function[256][FZ_MAXCOLORS];
 
+	int type; /* linear, radial, mesh */
+	int extend[2];
+
 	int meshlen;
 	int meshcap;
 	float *mesh; /* [x y t] or [x y c1 ... cn] */
diff --git a/fitz/res_shade.c b/fitz/res_shade.c
index 30d2bd16..d6108236 100644
--- a/fitz/res_shade.c
+++ b/fitz/res_shade.c
@@ -32,6 +32,11 @@ fz_boundshade(fz_shade *shade, fz_matrix ctm)
 	nvert = shade->meshlen / ncomp;
 	v = shade->mesh;
 
+	if (shade->type == FZ_LINEAR)
+		return fz_infiniterect;
+	if (shade->type == FZ_RADIAL)
+		return fz_infiniterect;
+
 	if (nvert == 0)
 		return fz_emptyrect;
 
@@ -66,6 +71,13 @@ fz_debugshade(fz_shade *shade)
 
 	printf("shading {\n");
 
+	switch (shade->type)
+	{
+	case FZ_LINEAR: printf("\ttype linear\n"); break;
+	case FZ_RADIAL: printf("\ttype radial\n"); break;
+	case FZ_MESH: printf("\ttype mesh\n"); break;
+	}
+
 	printf("\tbbox [%g %g %g %g]\n",
 		shade->bbox.x0, shade->bbox.y0,
 		shade->bbox.x1, shade->bbox.y1);
-- 
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