From 605122b64f9dff9c6fba9b49e5285f38747d3c7b Mon Sep 17 00:00:00 2001
From: =?utf8?q?Thomas=20Bl=C3=A4sius?= <thomas.blaesius@kit.edu>
Date: Wed, 11 Sep 2013 17:41:10 +0200
Subject: [PATCH] now only paths that are visible are modified (one can still
 get the old behaviour by klicking on toggle move invisible)

---
 ipelets/graph/graph.lua | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/ipelets/graph/graph.lua b/ipelets/graph/graph.lua
index 52eb188..a61d7ef 100644
--- a/ipelets/graph/graph.lua
+++ b/ipelets/graph/graph.lua
@@ -6,6 +6,7 @@ label = "Graph"
 about = [[ Some features making it easier to work with graphs. ]]
 
 local deactivateGraphMode = false
+local moveInvisibleObjects = false
 
 function toggleGraphMode ()
    if deactivateGraphMode then
@@ -15,6 +16,14 @@ function toggleGraphMode ()
    end
 end
 
+function toggleMoveInvisible ()
+   if moveInvisibleObjects then
+      moveInvisibleObjects = false
+   else 
+      moveInvisibleObjects = true
+   end
+end
+
 local editing = false
 local currMarkId = nil
 
@@ -111,7 +120,7 @@ function _G.EDITTOOL:key(code, modifiers, text)
 	       undo = _G.revertOriginal,}
    t.redo = function (t, doc)
       p:transform(currMarkId, ipe.Translation(newPos-oldPos))
-      moveEndpoints(oldPos, newPos, p)
+      moveEndpoints(oldPos, newPos, p, self.model)
    end
    self.model:register(t)
 end
@@ -119,8 +128,13 @@ end
 -- function moving all endpoints and intermediate points in polylines
 -- to newPos, if the squared distance to oldPos is at most sqEps
 local sqEps = 1
-function moveEndpoints(oldPos, newPos, p)
+function moveEndpoints(oldPos, newPos, p, model)
+   -- print(model.vno)
    for i, obj, sel, layer in p:objects() do
+      if not p:visible(model.vno, layer) and
+	 not moveInvisibleObjects then
+	 goto continue
+      end
       if obj:type() == "path" then
 	 local shape = obj:shape()
 	 for _, subPath in ipairs(shape) do
@@ -147,6 +161,7 @@ function moveEndpoints(oldPos, newPos, p)
 	    obj:setShape(shape)
 	 end
       end
+      ::continue::
    end
 end
 
@@ -221,7 +236,7 @@ function getString(model, string)
 end
 
 function shorten(model, num)
-   num = num - 1
+   num = num - 2
    local lenTarget = 0
    local lenSource = 0
    -- local str = ipeui.getString(model.ui, "Enter length")
@@ -269,6 +284,7 @@ end
 
 methods = {
    { label = "toggle graph mode", run=toggleGraphMode },
+   { label = "toggle move invisible", run=toggleMoveInvisible },
    { label = "shorten target", run=shorten },
    { label = "shorten source", run=shorten },
    { label = "shorten both", run=shorten },
-- 
2.34.1