[Fwd: A zigzag line orientation patch...]

[Alexander Larsson <alla lysator liu se>]

Forwarding to mailing list.

-----Forwarded Message-----

From: Michael H. Voase <mvoase@midcoast.com.au>
To: alla@lysator.liu.se
Subject: A zigzag line orientation patch...
Date: 25 Aug 2002 17:34:55 +1000

Gday,

	First up I would like to say great work on Dia. Its a very handy tool.

	Second up, I have attached a patch for 0.88.1 that adds an orientation 
feature to the middle-button menu for the zigzag line. This allows you 
to set wether the next zigzag line will have a vertical control bar or a 
horizontal control bar.

The patch is setup as a batch to be applied to 0.88.1 using the following:

patch -p1 -tud dia-0.88.1 < dia-0.88.1mv.patch

In the directory above the source tree.

Cheers Mik.
----


diff -ur dia-0.88.1/lib/orth_conn.c dia-0.88.1mv/lib/orth_conn.c
--- dia-0.88.1/lib/orth_conn.c	Mon Mar 26 11:05:21 2001
+++ dia-0.88.1mv/lib/orth_conn.c	Sun Aug 25 15:07:26 2002
@@ -30,9 +30,13 @@
 
 enum change_type {
   TYPE_ADD_SEGMENT,
-  TYPE_REMOVE_SEGMENT
+  TYPE_REMOVE_SEGMENT,
+  TYPE_ORIENT_VERT,
+  TYPE_ORIENT_HORIZ
 };
 
+static enum change_type orthconn_orientation = TYPE_ORIENT_HORIZ;
+
 static ObjectChange *
 midsegment_create_change(OrthConn *orth, enum change_type type,
 			 int segment,
@@ -88,6 +92,17 @@
 			  remove segment */
 };
 
+static ObjectChange *
+orient_change_create(OrthConn *orth, enum change_type change);
+
+struct OrientChange
+{
+    ObjectChange obj_change;
+    enum change_type type;
+    int applied;
+    enum change_type previous_value;
+};
+
 
 static void set_midpoint(Point *point, OrthConn *orth, int segment)
 {
@@ -399,18 +414,33 @@
   obj->handles[2] = orth->handles[2];
 
   /* Just so we have some position: */
-  orth->points[0] = *startpoint;
-  orth->points[1].x = startpoint->x;
-  orth->points[1].y = startpoint->y + 1.0;
-  orth->points[2].x = startpoint->x + 1.0;
-  orth->points[2].y = startpoint->y + 1.0;
-  orth->points[3].x = startpoint->x + 2.0;
-  orth->points[3].y = startpoint->y + 1.0;
-
-  orth->orientation[0] = VERTICAL;
-  orth->orientation[1] = HORIZONTAL;
-  orth->orientation[2] = VERTICAL;
-
+  if (orthconn_orientation == TYPE_ORIENT_HORIZ)
+  {
+    orth->points[0] = *startpoint;
+    orth->points[1].x = startpoint->x;
+    orth->points[1].y = startpoint->y + 1.0;
+    orth->points[2].x = startpoint->x + 1.0;
+    orth->points[2].y = startpoint->y + 1.0;
+    orth->points[3].x = startpoint->x + 2.0;
+    orth->points[3].y = startpoint->y + 1.0;
+
+    orth->orientation[0] = VERTICAL;
+    orth->orientation[1] = HORIZONTAL;
+    orth->orientation[2] = VERTICAL;
+  } else
+  {
+    orth->points[0] = *startpoint;
+    orth->points[1].x = startpoint->x + 1.0;
+    orth->points[1].y = startpoint->y;
+    orth->points[2].x = startpoint->x + 1.0;
+    orth->points[2].y = startpoint->y + 1.0;
+    orth->points[3].x = startpoint->x + 1.0;
+    orth->points[3].y = startpoint->y + 2.0;
+
+    orth->orientation[0] = HORIZONTAL;
+    orth->orientation[1] = VERTICAL;
+    orth->orientation[2] = HORIZONTAL;
+  }
   orthconn_update_data(orth);
 }
 
@@ -662,6 +692,26 @@
   return change;
 }
 
+ObjectChange *
+orthconn_orient_vert(OrthConn *orth, Point *clicked)
+{
+    ObjectChange *change = NULL;
+    
+    change = orient_change_create(orth, TYPE_ORIENT_VERT);
+    change->apply(change, (Object *) orth);
+    return change;
+}
+
+ObjectChange *
+orthconn_orient_horiz(OrthConn *orth, Point *clicked)
+{
+    ObjectChange *change = NULL;
+    
+    change = orient_change_create(orth, TYPE_ORIENT_HORIZ);
+    change->apply(change, (Object *) orth);
+    return change;
+}
+
 static void
 delete_point(OrthConn *orth, int pos)
 {
@@ -790,6 +840,8 @@
 			    HANDLE_MOVE_ENDPOINT);
     }
     break;
+    default:
+    break;
   }
 }
 
@@ -831,6 +883,8 @@
     if (change->cp) 
       object_connect(obj, change->old_end_handle, change->cp);
     break;
+    default:
+    break;
   }
   change->applied = 0;
 }
@@ -903,6 +957,8 @@
       orth->points[change->segment].y = change->points[0].y;
     }
     break;
+    default:
+    break;
   }
 }
 
@@ -931,6 +987,8 @@
     insert_handle(orth, change->segment, change->handles[0],
 		  FLIP_ORIENT(orth->orientation[change->segment-1]) );
     break;
+    default:
+    break;
   }
   change->applied = 0;
 }
@@ -961,5 +1019,47 @@
 }
 

+static void orient_change_free(struct OrientChange *change)
+{
+}
+
+static void orient_change_apply(struct OrientChange *change, Object *obj)
+{
+    change->applied = 1;
+    
+    switch (change->type)
+    {
+	case TYPE_ORIENT_HORIZ:
+	    orthconn_orientation = TYPE_ORIENT_HORIZ;
+	    break;
+	case TYPE_ORIENT_VERT:
+	    orthconn_orientation = TYPE_ORIENT_VERT;
+	    break;
+	default:
+	    break;
+    }
+        	    
+}
 
+static void orient_change_revert(struct OrientChange *change, Object *obj)
+{
+    change->applied = 0;
+    orthconn_orientation = change->previous_value;
+}
 
+static ObjectChange *
+orient_change_create(OrthConn *orth, enum change_type type)
+{
+    struct OrientChange *change;
+    
+    change = g_new(struct OrientChange, 1);
+    
+    change->obj_change.apply = (ObjectChangeApplyFunc) orient_change_apply;
+    change->obj_change.revert = (ObjectChangeRevertFunc) orient_change_revert;
+    change->obj_change.free = (ObjectChangeFreeFunc) orient_change_free;
+    
+    change->type = type;
+    change->previous_value = orthconn_orientation;
+    change->applied = 0;
+    return (ObjectChange *)change;
+}
diff -ur dia-0.88.1/lib/orth_conn.h dia-0.88.1mv/lib/orth_conn.h
--- dia-0.88.1/lib/orth_conn.h	Sat Feb 24 01:45:45 2001
+++ dia-0.88.1mv/lib/orth_conn.h	Sun Aug 25 14:35:01 2002
@@ -78,6 +78,8 @@
 int orthconn_can_add_segment(OrthConn *orth, Point *clickedpoint);
 ObjectChange *orthconn_delete_segment(OrthConn *orth, Point *clickedpoint);
 ObjectChange *orthconn_add_segment(OrthConn *orth, Point *clickedpoint);
+ObjectChange *orthconn_orient_vert(OrthConn *orth, Point *clickedpoint);
+ObjectChange *orthconn_orient_horiz(OrthConn *orth, Point *clickedpoint);
 #endif /* ORTH_CONN_H */
 

Only in dia-0.88.1mv: libtool
diff -ur dia-0.88.1/objects/standard/zigzagline.c dia-0.88.1mv/objects/standard/zigzagline.c
--- dia-0.88.1/objects/standard/zigzagline.c	Tue May  1 10:56:01 2001
+++ dia-0.88.1mv/objects/standard/zigzagline.c	Sun Aug 25 14:58:35 2002
@@ -335,9 +335,29 @@
   return change;
 }
 
+static ObjectChange *
+zigzagline_vertical_callback(Object *obj, Point *clicked, gpointer data)
+{
+    ObjectChange *change = NULL;
+    change = orthconn_orient_vert((OrthConn *)obj, clicked);
+    return change;
+}
+
+static ObjectChange *
+zigzagline_horizontal_callback(Object *obj, Point *clicked, gpointer data)
+{
+    ObjectChange *change = NULL;
+    change = orthconn_orient_horiz((OrthConn *)obj, clicked);
+    return change;
+}
+
+
 static DiaMenuItem object_menu_items[] = {
   { N_("Add segment"), zigzagline_add_segment_callback, NULL, 1 },
   { N_("Delete segment"), zigzagline_delete_segment_callback, NULL, 1 },
+  { NULL, NULL, NULL, 1 },
+  { N_("Vertical Orientation"), zigzagline_vertical_callback, NULL, 1 },
+  { N_("Horizontal Orientation"), zigzagline_horizontal_callback, NULL, 1 }
 };
 
 static DiaMenu object_menu = {
diff -ur dia-0.88.1/po/en_GB.po dia-0.88.1mv/po/en_GB.po
--- dia-0.88.1/po/en_GB.po	Sat May 19 16:34:47 2001
+++ dia-0.88.1mv/po/en_GB.po	Sun Aug 25 16:20:00 2002
@@ -201,7 +201,7 @@
 #: app/dia-props.c:189
 #, fuzzy
 msgid "Background Colour"
-msgstr "Background colour:"
+msgstr "Background Colour:"
 
 #: app/dia-props.c:200 lib/diagramdata.c:59
 msgid "Background"
Only in dia-0.88.1/sheets: sheet-translation-report