From f819c5ba44023769d5c8512cdf489d001c1da09d Mon Sep 17 00:00:00 2001
From: Alex Merry <dev@randomguy3.me.uk>
Date: Thu, 19 Apr 2012 13:22:42 +0100
Subject: Edges can now be reversed easily

---
 tikzit/src/gtk/Menu.h         |  2 ++
 tikzit/src/gtk/Menu.m         | 18 ++++++++++++++++++
 tikzit/src/gtk/TikzDocument.h |  1 +
 tikzit/src/gtk/TikzDocument.m |  8 +++++++-
 4 files changed, 28 insertions(+), 1 deletion(-)

(limited to 'tikzit/src/gtk')

diff --git a/tikzit/src/gtk/Menu.h b/tikzit/src/gtk/Menu.h
index 024c9e0..5a364e4 100644
--- a/tikzit/src/gtk/Menu.h
+++ b/tikzit/src/gtk/Menu.h
@@ -39,6 +39,8 @@
     GtkAction      *pasteAction;
     GtkAction     **nodeSelBasedActions;
     guint           nodeSelBasedActionCount;
+    GtkAction     **edgeSelBasedActions;
+    guint           edgeSelBasedActionCount;
     GtkAction     **selBasedActions;
     guint           selBasedActionCount;
 }
diff --git a/tikzit/src/gtk/Menu.m b/tikzit/src/gtk/Menu.m
index ea2e333..37ab87c 100644
--- a/tikzit/src/gtk/Menu.m
+++ b/tikzit/src/gtk/Menu.m
@@ -224,6 +224,12 @@ static void flip_vert_cb (GtkAction *action, MainWindow *window) {
     [pool drain];
 }
 
+static void reverse_edges_cb (GtkAction *action, MainWindow *window) {
+    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
+    [[window activeDocument] reverseSelectedEdges];
+    [pool drain];
+}
+
 static void bring_forward_cb (GtkAction *action, MainWindow *window) {
     NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
     [[window activeDocument] bringSelectionForward];
@@ -375,6 +381,7 @@ static const gchar ui_info[] =
 "      <separator/>"
 "      <menuitem action='FlipVert'/>"
 "      <menuitem action='FlipHoriz'/>"
+"      <menuitem action='ReverseEdges'/>"
 "      <separator/>"
 "      <menu action='Arrange'>"
 "        <menuitem action='SendToBack'/>"
@@ -561,6 +568,9 @@ static GtkActionEntry document_entries[] = {
     { "FlipVert", NULL, N_("Flip nodes _vertically"), NULL,
       N_("Flip the selected nodes vertically"), G_CALLBACK (flip_vert_cb) },
 
+    { "ReverseEdges", NULL, N_("Rever_se edges"), NULL,
+      N_("Reverse the selected edges"), G_CALLBACK (reverse_edges_cb) },
+
     { "SendToBack", NULL, N_("Send to _back"), NULL,
       N_("Send the selected nodes and edges to the back of the graph"), G_CALLBACK (send_to_back_cb) },
 
@@ -764,6 +774,9 @@ create_recent_chooser_menu ()
     nodeSelBasedActions[1] = gtk_action_group_get_action (documentActions, "Copy");
     nodeSelBasedActions[2] = gtk_action_group_get_action (documentActions, "FlipHoriz");
     nodeSelBasedActions[3] = gtk_action_group_get_action (documentActions, "FlipVert");
+    edgeSelBasedActionCount = 1;
+    edgeSelBasedActions = g_new (GtkAction*, edgeSelBasedActionCount);
+    edgeSelBasedActions[0] = gtk_action_group_get_action (documentActions, "ReverseEdges");
     selBasedActionCount = 2;
     selBasedActions = g_new (GtkAction*, selBasedActionCount);
     selBasedActions[0] = gtk_action_group_get_action (documentActions, "Delete");
@@ -820,6 +833,11 @@ create_recent_chooser_menu ()
             gtk_action_set_sensitive (nodeSelBasedActions[i], hasSelectedNodes);
         }
     }
+    for (int i = 0; i < edgeSelBasedActionCount; ++i) {
+        if (edgeSelBasedActions[i]) {
+            gtk_action_set_sensitive (edgeSelBasedActions[i], hasSelectedEdges);
+        }
+    }
     for (int i = 0; i < selBasedActionCount; ++i) {
         if (selBasedActions[i]) {
             gtk_action_set_sensitive (selBasedActions[i], hasSelectedNodes || hasSelectedEdges);
diff --git a/tikzit/src/gtk/TikzDocument.h b/tikzit/src/gtk/TikzDocument.h
index ddeaf29..79a9b17 100644
--- a/tikzit/src/gtk/TikzDocument.h
+++ b/tikzit/src/gtk/TikzDocument.h
@@ -152,6 +152,7 @@
 - (void) insertGraph:(Graph*)g;
 - (void) flipSelectedNodesHorizontally;
 - (void) flipSelectedNodesVertically;
+- (void) reverseSelectedEdges;
 - (void) bringSelectionForward;
 - (void) bringSelectionToFront;
 - (void) sendSelectionBackward;
diff --git a/tikzit/src/gtk/TikzDocument.m b/tikzit/src/gtk/TikzDocument.m
index a5f1d9f..2016d2a 100644
--- a/tikzit/src/gtk/TikzDocument.m
+++ b/tikzit/src/gtk/TikzDocument.m
@@ -726,7 +726,13 @@
     }
 }
 
-// FIXME: undo
+- (void) reverseSelectedEdges {
+    if ([[pickSupport selectedEdges] count] > 0) {
+        GraphChange *change = [graph reverseEdges:[pickSupport selectedEdges]];
+        [self completedGraphChange:change withName:@"Reverse edges"];
+    }
+}
+
 - (void) bringSelectionForward {
     BOOL hasNodeSelection = [[pickSupport selectedNodes] count] > 0;
     BOOL hasEdgeSelection = [[pickSupport selectedEdges] count] > 0;
-- 
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