From 79f65d040d72f778f66f8eefdaffb6acd9799a38 Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Tue, 10 May 2005 07:59:48 +0000
Subject: Merge of the newly developped postscript code (still not fully
 functional).

---
 generic/Group.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 63 insertions(+), 3 deletions(-)

(limited to 'generic/Group.c')

diff --git a/generic/Group.c b/generic/Group.c
index d569182..1f6a183 100644
--- a/generic/Group.c
+++ b/generic/Group.c
@@ -1355,10 +1355,70 @@ Coords(ZnItem           item,
  *
  **********************************************************************************
  */
-static void
-PostScript(ZnItem       item,
-           ZnBool       prepass)
+static int
+PostScript(ZnItem item,
+           ZnBool prepass,
+           ZnBBox *area)
 {
+  GroupItem group = (GroupItem) item;
+  ZnWInfo   *wi = item->wi;
+  ZnItem    current_item;
+  ZnBBox    bbox;
+  int       result = TCL_OK;
+  char      msg[500];
+
+  PushTransform(item);
+  PushClip(group, True);
+
+  for (current_item = group->tail; current_item != ZN_NO_ITEM;
+       current_item = current_item->previous) {
+    if (ISCLEAR(current_item->flags, ZN_VISIBLE_BIT)) {
+      continue;
+    }
+    //printf("area %g %g %g %g\n", area->orig.x, area->orig.y,
+    //       area->corner.x, area->corner.y);
+    ZnIntersectBBox(area, &current_item->item_bounding_box, &bbox);
+    if (ZnIsEmptyBBox(&bbox)) {
+      continue;
+    }
+    if (current_item->class->PostScript == NULL) {
+      continue;
+    }
+
+    if (current_item->class != ZnGroup) {
+      PushTransform(current_item);
+      if (!prepass) {
+        Tcl_AppendResult(wi->interp, "gsave\n", NULL);
+      }
+      ZnPostscriptTrace(current_item, 1);
+    }
+    result = current_item->class->PostScript(current_item, prepass, area);
+    if (current_item->class != ZnGroup) {
+      ZnPostscriptTrace(current_item, 0);
+      if (!prepass && (result == TCL_OK)) {
+        Tcl_AppendResult(wi->interp, "grestore\n", NULL);
+      }
+      PopTransform(current_item);
+    }
+    if (result == TCL_ERROR) {
+      if (!prepass) {
+        /*
+         * Add some trace to ease the error lookup.
+         */
+        sprintf(msg, "\n    (generating Postscript for item %d)", current_item->id);
+        Tcl_AddErrorInfo(wi->interp, msg);
+        break;
+      }
+    }
+  }
+
+  PopClip(group, True);
+  PopTransform(item);
+
+  if (!prepass && (result == TCL_OK)) {
+    ZnFlushPsChan(wi->interp, wi->ps_info);
+  }
+  return result;
 }
 
 
-- 
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