From 932f7160f80f9c34fcf1dcc41cb2b05b78e54956 Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Fri, 6 Apr 2018 22:48:33 +0200
Subject: [PATCH] Cropmarks mark=bg

---
 TODO    |  1 +
 cmds.cc | 14 ++++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/TODO b/TODO
index 558dc72..aba6a97 100644
--- a/TODO
+++ b/TODO
@@ -34,6 +34,7 @@
 | 	mark=cross	# Crosses in the corners
 | 	mark=out	# Out-pointing half-crosses in the corners (default)
 | 	mark=in		# In-pointing half-crosses
+| 	mark=bg		# Colored background
 | 	pen=1pt		# Line width
 | 	len=5mm		# Cross arm length
 | 	offset=5mm	# Distance from border
diff --git a/cmds.cc b/cmds.cc
index 2082ffe..b6c8eed 100644
--- a/cmds.cc
+++ b/cmds.cc
@@ -267,6 +267,7 @@ class cropmark_spec {
     MARK_CROSS,
     MARK_OUT,
     MARK_IN,
+    MARK_BG,
   } type;
   double pen_width;
   double arm_length;
@@ -288,6 +289,8 @@ public:
 	type = MARK_IN;
       else if (t == "out")
 	type = MARK_OUT;
+      else if (t == "bg")
+	type = MARK_BG;
       else
 	die("Invalid cropmark type %s", t.c_str());
 
@@ -296,6 +299,7 @@ public:
       offset = c->arg(prefix + "offset")->as_double(0);
       egstate = QPDFObjectHandle::newNull();
     }
+  bool is_bg() { return (type == MARK_BG); }
   string pdf_stream(out_context *out, BBox &box, pdf_matrix &xform);
 };
 
@@ -326,7 +330,7 @@ string cropmark_spec::pdf_stream(out_context *out, BBox &box, pdf_matrix &xform)
     return "";
 
   string s = "q ";
-  s += color.to_string() + " RG ";
+  s += color.to_string() + (type == MARK_BG ? " rg " : " RG ");
   s += xform.to_string() + " cm ";
 
   if (egstate.isNull())
@@ -374,6 +378,9 @@ string cropmark_spec::pdf_stream(out_context *out, BBox &box, pdf_matrix &xform)
        s += crop_cross(b.x_max, b.y_max, 0b0110);
        s += crop_cross(b.x_min, b.y_max, 0b1010);
        break;
+    case MARK_BG:
+       s += b.to_rect() + " re f ";
+       break;
     }
 
   s += "Q ";
@@ -1245,8 +1252,11 @@ void nup_page::render(out_context *out, pdf_matrix parent_xform)
 {
   for (int i=0; i < (int) orig_pages.size(); i++)
     {
+      if (cmarks->is_bg())
+	out->contents += cmarks->pdf_stream(out, tile_boxes[i], parent_xform);
       orig_pages[i]->render(out, xforms[i] * parent_xform);
-      out->contents += cmarks->pdf_stream(out, tile_boxes[i], parent_xform);
+      if (!cmarks->is_bg())
+	out->contents += cmarks->pdf_stream(out, tile_boxes[i], parent_xform);
     }
 }
 
-- 
2.39.5