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/Icon.c | 129 ++++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 101 insertions(+), 28 deletions(-)

(limited to 'generic/Icon.c')

diff --git a/generic/Icon.c b/generic/Icon.c
index 38c4ac9..5b9eae8 100644
--- a/generic/Icon.c
+++ b/generic/Icon.c
@@ -228,6 +228,57 @@ Query(ZnItem            item,
 
 
 /*
+ * Compute the transformation to be used and the origin
+ * of the icon (upper left point in item coordinates).
+ */
+static ZnTransfo *
+ComputeTransfoAndOrigin(ZnItem    item,
+                        ZnPoint   *origin)
+{
+  IconItem icon = (IconItem) item;
+  int       w, h;
+  ZnTransfo *t;
+
+  ZnSizeOfImage(icon->image, &w, &h);
+
+  /*
+   * The connected item support anchors, this is checked by configure.
+   */
+  if (item->connected_item != ZN_NO_ITEM) {
+    ZnTransfo inv;
+
+    item->connected_item->class->GetAnchor(item->connected_item,
+                                           icon->connection_anchor,
+                                           origin);
+
+    /* GetAnchor return a position in device coordinates not in
+     * the item coordinate space. To compute the icon origin
+     * (upper left corner), we must apply the inverse transform
+     * to the ref point before calling anchor2origin.
+     */
+    ZnTransfoInvert(item->transfo, &inv);
+    ZnTransformPoint(&inv, origin, origin);
+    /*
+     * The relevant transform in case of an attachment is the item
+     * transform alone. This is case of local coordinate space where
+     * only the translation is a function of the whole transform
+     * stack, scale and rotation are reset.
+     */
+    t = item->transfo;
+  }
+  else {
+    origin->x = origin->y = 0;
+    t = item->wi->current_transfo;
+  }
+
+  ZnAnchor2Origin(origin, (ZnReal) w, (ZnReal) h, icon->anchor, origin);
+  //origin->x = ZnNearestInt(origin->x);
+  //origin->y = ZnNearestInt(origin->y);
+
+  return t;
+}
+
+/*
  **********************************************************************************
  *
  * ComputeCoordinates --
@@ -238,10 +289,11 @@ static void
 ComputeCoordinates(ZnItem       item,
                    ZnBool       force)
 {
-  ZnWInfo       *wi = item->wi;
-  IconItem      icon = (IconItem) item;
-  int           width, height, i;
-  ZnPoint       pos, quad[4];
+  //ZnWInfo   *wi = item->wi;
+  IconItem  icon = (IconItem) item;
+  int       width, height, i;
+  ZnPoint   quad[4];
+  ZnTransfo *t;
   
   ZnResetBBox(&item->item_bounding_box);
 
@@ -252,34 +304,16 @@ ComputeCoordinates(ZnItem       item,
     return;
   }
     
-  if (icon->image != ZnUnspecifiedImage) {
-    ZnSizeOfImage(icon->image, &width, &height);
-  }
-
+  ZnSizeOfImage(icon->image, &width, &height);
+  t = ComputeTransfoAndOrigin(item, quad);
 
-  /*
-   * The connected item support anchors, this is checked by
-   * configure.
-   */
-  if (item->connected_item != ZN_NO_ITEM) {
-    ZnTransfo t;
-    
-    item->connected_item->class->GetAnchor(item->connected_item,
-                                           icon->connection_anchor, quad);
-    ZnTransfoInvert(wi->current_transfo, &t);
-    ZnTransformPoint(&t, quad, &pos);
-  }
-  else {
-    pos.x = pos.y = 0;
-  }
-  ZnAnchor2Origin(&pos, (ZnReal) width, (ZnReal) height, icon->anchor, quad);
   quad[1].x = quad[0].x;
   quad[1].y = quad[0].y + height;
   quad[2].x = quad[0].x + width;
   quad[2].y = quad[1].y;
   quad[3].x = quad[2].x;
   quad[3].y = quad[0].y;
-  ZnTransformPoints(wi->current_transfo, quad, icon->dev, 4);
+  ZnTransformPoints(t, quad, icon->dev, 4);
   
   for (i = 0; i < 4; i++) {
     icon->dev[i].x = ZnNearestInt(icon->dev[i].x);
@@ -726,10 +760,49 @@ Pick(ZnItem     item,
  *
  **********************************************************************************
  */
-static void
-PostScript(ZnItem       item,
-           ZnBool       prepass)
+static int
+PostScript(ZnItem item,
+           ZnBool prepass,
+           ZnBBox *area)
 {
+  ZnWInfo       *wi = item->wi;
+  IconItem      icon = (IconItem) item;
+  int           w, h, result;
+  ZnPoint       origin;
+  char          path[500];
+
+  if (prepass || (icon->image == ZnUnspecifiedImage)) {
+    return TCL_OK;
+  }
+  
+  ZnSizeOfImage(icon->image, &w, &h);
+
+  ComputeTransfoAndOrigin(item, &origin);
+  
+  sprintf(path, "/InitialTransform load setmatrix\n"
+          "[%.15g %.15g %.15g %.15g %.15g %.15g] concat\n"
+          "1 -1 scale\n"
+          "%.15g %.15g translate\n",
+          wi->current_transfo->_[0][0], wi->current_transfo->_[0][1], 
+          wi->current_transfo->_[1][0], wi->current_transfo->_[1][1], 
+          wi->current_transfo->_[2][0], wi->current_transfo->_[2][1],
+          origin.x, origin.y - h);
+  Tcl_AppendResult(wi->interp, path, NULL);
+  
+  if (ZnImageIsBitmap(icon->image)) {
+    if (Tk_PostscriptColor(wi->interp, wi->ps_info,
+                           ZnGetGradientColor(icon->color, 0.0, NULL)) != TCL_OK) {
+      return TCL_ERROR;
+    }
+    result = ZnPostscriptBitmap(wi->interp, wi->win, wi->ps_info,
+                                icon->image, 0, 0, w, h);
+  }
+  else {
+    result = Tk_PostscriptImage(ZnImageTkImage(icon->image), wi->interp, wi->win,
+                                wi->ps_info, 0, 0, w, h, prepass);
+  }
+  
+  return result;
 }
 
 
-- 
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