Structure-Change: push a set of suitable ViewHook-Interfaces into the DisplayFrame

...actual Operations not yet implemented (but trivial to implement in the end)
2019-12-20 22:15:35 +01:00 · 2019-12-20 22:15:35 +01:00 · c5d0ddb01b
commit c5d0ddb01b
parent 33a19c404b
10 changed files with 227 additions and 53 deletions
--- a/src/stage/timeline/display-manager.hpp
+++ b/src/stage/timeline/display-manager.hpp
@ -69,6 +69,7 @@ namespace timeline {
  
  using util::max;
  
+  using model::ViewHooked;
  class TrackHeadWidget;
  class TrackBody;
  
--- a/src/stage/timeline/timeline-controller.cpp
+++ b/src/stage/timeline/timeline-controller.cpp
@ -89,10 +89,7 @@ namespace timeline {
    : Controller{identity, nexus}
    , name_{identity.getSym()}    // fallback initialise name from human-readable ID symbol 
    , markers_{}
-    , fork_{new TrackPresenter{trackID, nexus, [&](TrackHeadWidget& head,TrackBody& body)
-                                                 {
-                                                   layoutManager.installRootTrack (head, body); 
-                                                 }}}
+    , fork_{new TrackPresenter{trackID, nexus, layoutManager}}
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1201 : test/code... remove this
    , DEBUG_canvas_{layoutManager.exposeCanvasForDebug()}
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1201 : test/code... remove this
--- a/src/stage/timeline/timeline-layout.hpp
+++ b/src/stage/timeline/timeline-layout.hpp
@ -101,8 +101,6 @@ namespace timeline {
  class TrackHeadWidget;
  class TrackBody;
  
-  using model::ViewHooked;
-  
  
  /**
   * Top-level anchor point for the timeline display (widgets).
--- a/src/stage/timeline/track-body.cpp
+++ b/src/stage/timeline/track-body.cpp
@ -107,6 +107,34 @@ namespace timeline {
  }
  
  
+  /* ==== Interface: ViewHook ===== */
+  
+  void
+  TrackBody::hook (TrackBody& subBody, int xPos, int yPos)
+  {
+    UNIMPLEMENTED ("attach sub-TrackBody");
+  }
+  
+  void
+  TrackBody::move (TrackBody& subBody, int xPos, int yPos)
+  {
+    NOTREACHED ("woot?? can we even move a sub-TrackBody????");
+  }
+
+  void
+  TrackBody::remove (TrackBody& subBody)
+  {
+    UNIMPLEMENTED ("detach sub-TrackBody");
+  }
+  
+  void
+  TrackBody::rehook (ViewHooked<TrackBody>& subBody)  noexcept
+  {
+    UNIMPLEMENTED ("re-attach sub-TrackBody");
+  }
+  
+  
+  /* ==== Code for vertical track display layout ==== */
  
  /**
   * recursively calculate the height in pixels to display this track,
--- a/src/stage/timeline/track-body.hpp
+++ b/src/stage/timeline/track-body.hpp
@ -92,6 +92,7 @@ namespace timeline {
   * @todo WIP-WIP as of 6/2019
   */
  class TrackBody
+    : public model::ViewHook<TrackBody>
    {
      uint contentHeight_;
      uint contentOffset_;
@ -117,13 +118,21 @@ namespace timeline {
      uint calcRulerHeight();
      uint calcHeight();
      
+      uint getContentOffsetY() { return startLine_; }
+      
      DisplayManager::SignalStructureChange signalStructureChange_;
      
      
-    private:/* ===== Internals ===== */
+      /* ==== Interface: ViewHook ===== */
      
+      void hook (TrackBody&, int xPos=0, int yPos=0) override;
+      void move (TrackBody&, int xPos, int yPos)     override;
+      void remove (TrackBody&)                       override;
+      void rehook (ViewHooked<TrackBody>&)  noexcept override;
+      
+      /* ===== Internals ===== */
      /**
-       * Allow the TrackPresenter to manage the rulers
+       * @internal Allow the TrackPresenter to manage the rulers
       * The collection of rulers is part of the systematic UI model
       * and thus formally a direct child of the TrackPresenter; however they
       * are only relevant for the immediate display and interaction mechanics,
@ -138,7 +147,6 @@ namespace timeline {
          return rulers_;
        }
      
-      friend class TrackPresenter;
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1201 : test/code... remove this
      uString TODO_trackName_;
 /////////////////////////////////////////////////////////////////////////////////////////////////////////////TICKET #1201 : test/code... remove this
--- a/src/stage/timeline/track-head-widget.cpp
+++ b/src/stage/timeline/track-head-widget.cpp
@ -112,5 +112,32 @@ namespace timeline {
  }
  
  
+  /* ==== Interface: ViewHook ===== */
+  
+  void
+  TrackHeadWidget::hook (TrackHeadWidget& subHead, int xPos, int yPos)
+  {
+    UNIMPLEMENTED ("attach sub-TrackHead");
+  }
+  
+  void
+  TrackHeadWidget::move (TrackHeadWidget& subHead, int xPos, int yPos)
+  {
+    NOTREACHED ("woot?? can we even move a sub-TrackHead????");
+  }
+
+  void
+  TrackHeadWidget::remove (TrackHeadWidget& subHead)
+  {
+    UNIMPLEMENTED ("detach sub-TrackHead");
+  }
+  
+  void
+  TrackHeadWidget::rehook (ViewHooked<TrackHeadWidget>& hookedSubHead)  noexcept
+  {
+    UNIMPLEMENTED ("re-attach sub-TrackHead");
+  }
+  
+  
  
 }}// namespace stage::timeline
--- a/src/stage/timeline/track-head-widget.hpp
+++ b/src/stage/timeline/track-head-widget.hpp
@ -48,6 +48,7 @@

 #include "stage/gtk-base.hpp"
 #include "stage/ctrl/bus-term.hpp"
+#include "stage/model/view-hook.hpp"

 //#include "lib/util.hpp"

@ -60,6 +61,7 @@ namespace stage  {
 namespace timeline {
  
  using ID = ctrl::BusTerm::ID;
+  using model::ViewHooked;
  
  /**
   * Header pane control area corresponding to a Track with nested child Tracks.
@ -70,12 +72,20 @@ namespace timeline {
   */
  class TrackHeadWidget
    : public Gtk::Grid
+    , public model::ViewHook<TrackHeadWidget>
    {
      Gtk::Label nameTODO_;
      Gtk::Label treeTODO_;
      
      uint childCnt_;
      
+      /* ==== Interface: ViewHook ===== */
+      
+      void hook (TrackHeadWidget&, int xPos=0, int yPos=0) override;
+      void move (TrackHeadWidget&, int xPos, int yPos)     override;
+      void remove (TrackHeadWidget&)                       override;
+      void rehook (ViewHooked<TrackHeadWidget>&)  noexcept override;
+      
    public:
      TrackHeadWidget();
     ~TrackHeadWidget();
--- a/src/stage/timeline/track-presenter.cpp
+++ b/src/stage/timeline/track-presenter.cpp
@ -85,7 +85,8 @@ namespace timeline {
  void
  TrackPresenter::injectDebugTrackLabels(BodyCanvasWidget& bodyCanvas)
  {
-    bodyCanvas.DEBUG_injectTrackLabel (display_.body.TODO_trackName_, display_.body.startLine_ + display_.body.contentOffset_);
+    ///////////////////////////TODO TOD-oh
+//    bodyCanvas.DEBUG_injectTrackLabel (display_.body_.TODO_trackName_, display_.body_.startLine_ + display_.body_.contentOffset_);
    for (auto& subTrack : subFork_)
      subTrack->injectDebugTrackLabels (bodyCanvas);
  }
@ -109,7 +110,7 @@ namespace timeline {
    
    buffer.create (
      TreeMutator::build()
-        .attach (collection(display_.body.bindRulers())
+        .attach (collection(display_.bindRulers())
               .isApplicableIf ([&](GenNode const& spec) -> bool
                  {                                            // »Selector« : require object-like sub scope with type-field "Ruler"
                    return TYPE_Ruler == spec.data.recordType();
@ -177,12 +178,7 @@ namespace timeline {
                  })
               .constructFrom ([&](GenNode const& spec) -> PFork
                  {
-                    return make_unique<TrackPresenter> (spec.idi
-                                                       ,this->uiBus_
-                                                       ,[&](TrackHeadWidget& head,TrackBody& body)
-                                                          {
-                                                            display_.injectSubTrack (head, body); 
-                                                          });
+                    return make_unique<TrackPresenter> (spec.idi, uiBus_, this->display_);
                  })
               .buildChildMutator ([&](PFork& target, GenNode::ID const& subID, TreeMutator::Handle buff) -> bool
                  {
--- a/src/stage/timeline/track-presenter.hpp
+++ b/src/stage/timeline/track-presenter.hpp
@ -74,43 +74,103 @@ namespace timeline {
  
  
  /**
-   * Reference frame to organise the display related to a specific Track in the Timeline-GUI.
+   * ViewHook decorator to apply a (dynamic) offset
+   * when attaching or moving Widgets on the shared canvas.
+   */
+  class CanvasOffsetHook
+    : public model::ViewHook<Gtk::Widget>
+    {
+      model::ViewHook<Gtk::Widget>& refHook_;
+      
+      
+      /* ==== Interface: ViewHook ===== */
+      
+      void
+      hook (Gtk::Widget& widget, int xPos=0, int yPos=0) override
+        {
+          refHook_.hook (widget, hookAdjX (xPos), hookAdjY (yPos));
+        }
+      
+      void
+      move (Gtk::Widget& widget, int xPos, int yPos)  override
+        {
+          refHook_.move (widget, hookAdjX (xPos), hookAdjY (yPos));
+        }
+
+      void
+      remove (Gtk::Widget& widget)  override
+        {
+          refHook_.remove (widget);
+        }
+      
+      void
+      rehook (ViewHooked<Gtk::Widget>& hookedWidget)  noexcept override
+        {
+          refHook_.rehook (hookedWidget);
+        }
+      
+    protected: /* === extended Interface for relative view hook === */
+      virtual int hookAdjX (int xPos)  =0;
+      virtual int hookAdjY (int yPos)  =0;
+      
+    public:
+      CanvasOffsetHook(model::ViewHook<Gtk::Widget>& refHook)
+        : refHook_{refHook}
+        { }
+    };
+  
+  
+  /**
+   * Reference frame to organise the presentation related to a specific Track in the Timeline-GUI.
   * With the help of such a common frame of reference, we solve the problem that each individual
   * track display needs to hook into two distinct UI presentation structures: the track head controls
   * and the presentation of track contents on the BodyCanvasWidget.
   */
-  struct DisplayFrame
+  class DisplayFrame
    : util::NonCopyable
+    , public DisplayViewHooks
+    , public CanvasOffsetHook
    {
-      TrackHeadWidget head;
-      TrackBody       body;
+      TrackHeadWidget head_;
+      TrackBody       body_;
      
-      template<class FUN>
-      DisplayFrame (FUN anchorDisplay)
-        : head{}
-        , body{}
-        {
-          anchorDisplay (head, body);
-        }
+      /* ==== Interface: DisplayViewHooks===== */
      
-     ~DisplayFrame()
-        {
-          // Note: ~TrackBody triggers DisplayManager::signalStructureChange_()
-          TODO ("cause the managed presentation elements to detach from their parents");
-        }                            ///////////////////////////////////TICKET #1198 -- clarify to what extent esp. the header widgets need to be actively removed from the display structure. Is it sufficient just to kill the TrackHeadWidget 
+      model::ViewHook<TrackHeadWidget>& getHeadHook()  override { return head_; };
+      model::ViewHook<TrackBody>&       getBodyHook()  override { return body_; };
+      model::ViewHook<Gtk::Widget>&     getClipHook()  override { return *this; };
+      
+      /* === extended Interface for relative view hook === */
+      
+      int hookAdjX (int xPos)  override { return xPos; };
+      int hookAdjY (int yPos)  override { return yPos + body_.getContentOffsetY(); };
+      
+      
+    public:
+      DisplayFrame (DisplayViewHooks& displayAnchor)
+        : CanvasOffsetHook{displayAnchor.getClipHook()}
+        , head_{}
+        , body_{}
+        { }
      
      void
      setTrackName (cuString& name)
        {
-          head.setTrackName (name);
-          body.setTrackName (name);  ///////////////////////////////////TICKET #1017 -- TODO 11/18 : not clear yet if TrackBody needs to know its name
+          head_.setTrackName (name);
+          body_.setTrackName (name);  ///////////////////////////////////TICKET #1017 -- TODO 11/18 : not clear yet if TrackBody needs to know its name
        }

      void
      injectSubTrack (TrackHeadWidget& subHead, TrackBody& subBody)
        {
-          head.injectSubFork (subHead);
-          body.attachSubTrack (&subBody);
+          head_.injectSubFork (subHead);
+          body_.attachSubTrack (&subBody);
+        }
+      
+      vector<unique_ptr<RulerTrack>>&
+      bindRulers()
+        {
+          return body_.bindRulers();
        }
    };
  
@ -136,10 +196,9 @@ namespace timeline {
       * @param nexus a way to connect this Controller to the UI-Bus.
       * @param anchorDisplay a one-way closure to attach into the display fabric
       */
-      template<class FUN>
-      TrackPresenter (ID id, ctrl::BusTerm& nexus, FUN anchorDisplay)
+      TrackPresenter (ID id, ctrl::BusTerm& nexus, DisplayViewHooks& displayAnchor)
        : Controller{id, nexus}
-        , display_{anchorDisplay}
+        , display_{displayAnchor}
        , subFork_{}
        , markers_{}
        , clips_{}
--- a/wiki/thinkPad.ichthyo.mm
+++ b/wiki/thinkPad.ichthyo.mm
@ -21435,7 +21435,7 @@
  </body>
 </html></richcontent>
 <arrowlink COLOR="#5f74b7" DESTINATION="ID_1964864197" ENDARROW="Default" ENDINCLINATION="-1024;0;" ID="Arrow_ID_465735263" STARTARROW="None" STARTINCLINATION="-717;0;"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1573315138011" ID="ID_1957325688" MODIFIED="1575652920080" TEXT="brauchen wir hier eine Erweiterung auf mehrere Typen...?">
+<node COLOR="#435e98" CREATED="1573315138011" FOLDED="true" ID="ID_1957325688" MODIFIED="1576876407022" TEXT="brauchen wir hier eine Erweiterung auf mehrere Typen...?">
 <arrowlink COLOR="#684be4" DESTINATION="ID_1458279581" ENDARROW="Default" ENDINCLINATION="-1681;0;" ID="Arrow_ID_1672277618" STARTARROW="None" STARTINCLINATION="788;-76;"/>
 <icon BUILTIN="help"/>
 <node CREATED="1575652924086" ID="ID_996829512" MODIFIED="1575653116780" TEXT="Antwort: im Prinzip ja">
@ -21464,11 +21464,34 @@
 <icon BUILTIN="stop-sign"/>
 </node>
 <node CREATED="1575653121588" ID="ID_46973905" MODIFIED="1575653151603" TEXT="also bleibt nur, die Typisierung in den Funktions-Signaturen explizit auszudr&#xfc;cken"/>
+<node CREATED="1576876291037" ID="ID_114617089" MODIFIED="1576876404029" TEXT="dieses Problem versuchen wir, &quot;pragmatisch auszusitzen&quot;">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      Streng genommen w&#252;rden wir in der Tat einen generischen Quer-Zugriffsmechanismus brauchen.
+    </p>
+    <p>
+      Allerdings ist dieser entweder nicht implementierbar, oder, wenn implementierbar, dann auch redundant.
+    </p>
+    <p>
+      Und zudem kristallisiert sich bereits heraus, da&#223; wir es nicht mit einem &quot;Universum&quot; generischer Typen zu tun bekommen, sondern mit einer kleinen Auswahl, f&#252;r die wir halt dann die Quer-Verbindungen direkt auscoden und gut is...
+    </p>
+  </body>
+</html>
+</richcontent>
+<icon BUILTIN="yes"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1575065263201" ID="ID_1640997956" MODIFIED="1575065274457" TEXT="zu kl&#xe4;ren: Zugang zu diesem ViewHook">
-<icon BUILTIN="flag-yellow"/>
+</node>
+<node COLOR="#338800" CREATED="1575065263201" FOLDED="true" ID="ID_1640997956" MODIFIED="1576876415142" TEXT="zu kl&#xe4;ren: Zugang zu diesem ViewHook">
+<icon BUILTIN="button_ok"/>
 <node CREATED="1575653188938" ID="ID_619809248" MODIFIED="1575653206332" TEXT="es l&#xe4;uft darauf hinaus, den Zugang in den DisplayFrames zusammenzufassen"/>
-<node CREATED="1575653207328" ID="ID_1942901156" MODIFIED="1575653233600" TEXT="diese m&#xfc;ssen daher eine Referenz auf einen &quot;irgendwo vorhandenen&quot; Timeline-ViewHook haben"/>
+<node CREATED="1575653207328" ID="ID_1942901156" MODIFIED="1576876278735" TEXT="diese brauchen daher eine Referenz auf einen &quot;irgendwo vorhandenen&quot; Timeline-ViewHook"/>
+<node COLOR="#338800" CREATED="1576876251659" ID="ID_1249561924" MODIFIED="1576876267532" TEXT="und tats&#xe4;chlich bekommen sie diesen per verketteter Initialisierung">
+<icon BUILTIN="button_ok"/>
+</node>
 </node>
 </node>
 <node CREATED="1563467398036" ID="ID_828698459" MODIFIED="1563467403607" TEXT="Implementierung">
@ -21817,10 +21840,28 @@
 <arrowlink COLOR="#507b9b" DESTINATION="ID_1193961919" ENDARROW="Default" ENDINCLINATION="-877;88;" ID="Arrow_ID_624713040" STARTARROW="None" STARTINCLINATION="706;62;"/>
 <icon BUILTIN="button_ok"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576757730509" ID="ID_1816490333" MODIFIED="1576758006669" TEXT="Thema &#xbb;Widget-Position&#xab;">
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576757730509" ID="ID_1816490333" MODIFIED="1576876200239" TEXT="Thema &#xbb;Widget-Position&#xab;">
 <arrowlink COLOR="#605bb8" DESTINATION="ID_1949130658" ENDARROW="Default" ENDINCLINATION="204;611;" ID="Arrow_ID_993970158" STARTARROW="None" STARTINCLINATION="512;51;"/>
-<icon BUILTIN="flag-yellow"/>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576758030604" HGAP="54" ID="ID_1869378616" MODIFIED="1576758051786" TEXT="entsprechende Erweiterung f&#xfc;r delegating-ViewHook notwendig" VSHIFT="26">
+<linktarget COLOR="#15bcc9" DESTINATION="ID_1816490333" ENDARROW="Default" ENDINCLINATION="-785;86;" ID="Arrow_ID_408864676" SOURCE="ID_1121301646" STARTARROW="None" STARTINCLINATION="-225;17;"/>
+<icon BUILTIN="pencil"/>
+<node COLOR="#338800" CREATED="1576758030604" HGAP="54" ID="ID_1869378616" MODIFIED="1576876023320" TEXT="entsprechende Erweiterung f&#xfc;r delegating-ViewHook notwendig" VSHIFT="26">
+<icon BUILTIN="button_ok"/>
+</node>
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576876029833" HGAP="57" ID="ID_893654405" MODIFIED="1576876116458" TEXT="kl&#xe4;ren: brauchen wir verschiedene Offsets per Typ" VSHIFT="3">
+<richcontent TYPE="NOTE"><html>
+  <head>
+    
+  </head>
+  <body>
+    <p>
+      also einen speziellen Offset f&#252;r Clips und einen anderen speziellen Offset f&#252;r Effekt-Marker?
+    </p>
+    <p>
+      Oder, anders, wie bekommen wir diese Dinger jeweils in den richtigen unter-Bereich des Track-Layouts??
+    </p>
+  </body>
+</html>
+</richcontent>
 <icon BUILTIN="flag-yellow"/>
 </node>
 </node>
@ -21879,8 +21920,8 @@
 <node CREATED="1576705652570" ID="ID_551481195" MODIFIED="1576705666257" TEXT="ViewHook&lt;Widget&gt;">
 <icon BUILTIN="info"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576705712654" ID="ID_1745971143" MODIFIED="1576705720810" TEXT="implementieren im TrackCanvas">
-<icon BUILTIN="flag-yellow"/>
+<node BACKGROUND_COLOR="#fdfdcf" COLOR="#ff0000" CREATED="1576705712654" ID="ID_1745971143" MODIFIED="1576876014371" TEXT="implementieren im TrackCanvas">
+<icon BUILTIN="flag-pink"/>
 </node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576705413085" ID="ID_1979905155" MODIFIED="1576705430397" TEXT="Konstruktor / &quot;ein-H&#xe4;kel&quot;-Mchanismus darauf umstellen">
@ -21895,7 +21936,8 @@
 <icon BUILTIN="smily_bad"/>
 </node>
 <node CREATED="1576760324713" ID="ID_1267786696" MODIFIED="1576760340354" TEXT="einziger Ausweg... Display-Manager wird zum Super-Hook"/>
-<node COLOR="#338800" CREATED="1576806720057" ID="ID_805988831" MODIFIED="1576855579888" TEXT="noch besser: das in ein Sammel-Interface packen">
+<node COLOR="#338800" CREATED="1576806720057" ID="ID_805988831" MODIFIED="1576875959056" TEXT="noch besser: das in ein Sammel-Interface packen">
+<linktarget COLOR="#67d289" DESTINATION="ID_805988831" ENDARROW="Default" ENDINCLINATION="-36;221;" ID="Arrow_ID_909815140" SOURCE="ID_1966295709" STARTARROW="None" STARTINCLINATION="495;16;"/>
 <icon BUILTIN="idea"/>
 <node CREATED="1576806744893" ID="ID_526365809" MODIFIED="1576855570801" TEXT="vielleicht sogar ein Accessor-Interface">
 <icon BUILTIN="idea"/>
@ -21919,7 +21961,7 @@
 </node>
 </node>
 </node>
-<node CREATED="1576710544415" ID="ID_88564726" MODIFIED="1576710556729" TEXT="zwei F&#xe4;lle zu unterscheiden">
+<node CREATED="1576710544415" FOLDED="true" ID="ID_88564726" MODIFIED="1576875999707" TEXT="zwei F&#xe4;lle zu unterscheiden">
 <icon BUILTIN="idea"/>
 <node CREATED="1576710558354" ID="ID_146653361" MODIFIED="1576710566077" TEXT="top-Level">
 <node CREATED="1576710810240" ID="ID_1493306680" MODIFIED="1576710989724" TEXT="bisher...">
@ -21963,7 +22005,14 @@
 </node>
 </node>
 </node>
-<node CREATED="1576710566905" ID="ID_1380718144" MODIFIED="1576710570556" TEXT="Rekursion"/>
+<node CREATED="1576710566905" ID="ID_1380718144" MODIFIED="1576710570556" TEXT="Rekursion">
+<node CREATED="1576875874270" ID="ID_345044928" MODIFIED="1576875883513" TEXT="unproblematisch"/>
+<node CREATED="1576875884389" ID="ID_209901177" MODIFIED="1576875891784" TEXT="basierend auf der L&#xf6;sung f&#xfc;r top-Level"/>
+<node CREATED="1576875892588" ID="ID_1966295709" MODIFIED="1576875968903" TEXT="DisplayFrame selber implementiert wieder das DisplayViewHooks Sammel-Interface">
+<arrowlink COLOR="#67d289" DESTINATION="ID_805988831" ENDARROW="Default" ENDINCLINATION="-36;221;" ID="Arrow_ID_909815140" STARTARROW="None" STARTINCLINATION="495;16;"/>
+<icon BUILTIN="idea"/>
+</node>
+</node>
 </node>
 <node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576753128134" ID="ID_1066136383" MODIFIED="1576753147236" TEXT="signalStructureChange_ anders l&#xf6;sen">
 <icon BUILTIN="flag-yellow"/>
@ -22045,7 +22094,8 @@
 <node CREATED="1576705779910" ID="ID_968522268" MODIFIED="1576705792920" TEXT="damit ViewHook&lt;Clip&gt;"/>
 <node CREATED="1576705802515" ID="ID_674496871" MODIFIED="1576705809765" TEXT="und ViewHook&lt;Marker&gt;"/>
 </node>
-<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576855620250" ID="ID_1121301646" MODIFIED="1576855705548" TEXT="relatives Positionieren erm&#xf6;glichen">
+<node BACKGROUND_COLOR="#eee5c3" COLOR="#990000" CREATED="1576855620250" ID="ID_1121301646" MODIFIED="1576876200239" TEXT="relatives Positionieren erm&#xf6;glichen">
+<arrowlink COLOR="#15bcc9" DESTINATION="ID_1816490333" ENDARROW="Default" ENDINCLINATION="-785;86;" ID="Arrow_ID_408864676" STARTARROW="None" STARTINCLINATION="-225;17;"/>
 <linktarget COLOR="#6780d3" DESTINATION="ID_1121301646" ENDARROW="Default" ENDINCLINATION="551;-498;" ID="Arrow_ID_229033893" SOURCE="ID_1642579599" STARTARROW="None" STARTINCLINATION="-477;21;"/>
 <icon BUILTIN="flag-yellow"/>
 </node>