From d73ab976df192ee794dd39f7bc02af26982ae1fb Mon Sep 17 00:00:00 2001
From: Maciej Suminski <maciej.suminski@cern.ch>
Date: Wed, 9 Jul 2014 14:01:06 +0200
Subject: [PATCH] Added support for placing the footprint anchor.

---
 pcbnew/tools/common_actions.cpp |  9 ++++++-
 pcbnew/tools/common_actions.h   |  3 +++
 pcbnew/tools/drawing_tool.cpp   | 47 +++++++++++++++++++++++++++++++++
 pcbnew/tools/drawing_tool.h     |  6 +++++
 pcbnew/tools/pcbnew_control.cpp |  2 +-
 5 files changed, 65 insertions(+), 2 deletions(-)

diff --git a/pcbnew/tools/common_actions.cpp b/pcbnew/tools/common_actions.cpp
index 45305cc83e..41fbea71e8 100644
--- a/pcbnew/tools/common_actions.cpp
+++ b/pcbnew/tools/common_actions.cpp
@@ -101,6 +101,11 @@ TOOL_ACTION COMMON_ACTIONS::placePad( "pcbnew.InteractiveDrawing.placePad",
         AS_GLOBAL, 0,
         "Add pads", "Add pads", AF_ACTIVATE );
 
+TOOL_ACTION COMMON_ACTIONS::setAnchor( "pcbnew.InteractiveDrawing.setAnchor",
+        AS_GLOBAL, 0,
+        "Place the footprint anchor", "Place the footprint anchor",
+        AF_ACTIVATE );
+
 // View Controls
 TOOL_ACTION COMMON_ACTIONS::zoomIn( "pcbnew.Control.zoomIn",
         AS_GLOBAL, WXK_F1,
@@ -313,6 +318,9 @@ boost::optional<TOOL_EVENT> COMMON_ACTIONS::TranslateLegacyId( int aId )
     case ID_MODEDIT_PAD_TOOL:
         return COMMON_ACTIONS::placePad.MakeEvent();
 
+    case ID_MODEDIT_ANCHOR_TOOL:
+        return COMMON_ACTIONS::setAnchor.MakeEvent();
+
     case ID_PCB_PLACE_GRID_COORD_BUTT:
     case ID_MODEDIT_PLACE_GRID_COORD:
         return COMMON_ACTIONS::gridSetOrigin.MakeEvent();
@@ -336,7 +344,6 @@ boost::optional<TOOL_EVENT> COMMON_ACTIONS::TranslateLegacyId( int aId )
     case ID_MENU_PCB_SHOW_HIDE_MUWAVE_TOOLBAR:
     case ID_MICROWAVE_V_TOOLBAR:
     case ID_MODEDIT_DELETE_TOOL:
-    case ID_MODEDIT_ANCHOR_TOOL:
         return COMMON_ACTIONS::toBeDone.MakeEvent();
     }
 
diff --git a/pcbnew/tools/common_actions.h b/pcbnew/tools/common_actions.h
index 9c812414df..f971116d6e 100644
--- a/pcbnew/tools/common_actions.h
+++ b/pcbnew/tools/common_actions.h
@@ -93,6 +93,9 @@ public:
     /// Activation of the drawing tool (placing a PAD)
     static TOOL_ACTION placePad;
 
+    /// Activation of the drawing tool (placing the footprint anchor)
+    static TOOL_ACTION setAnchor;
+
     // Push and Shove Router Tool
     /// Activation of the Push and Shove router
     static TOOL_ACTION routerActivate;
diff --git a/pcbnew/tools/drawing_tool.cpp b/pcbnew/tools/drawing_tool.cpp
index fff955bfca..d3da87ce44 100644
--- a/pcbnew/tools/drawing_tool.cpp
+++ b/pcbnew/tools/drawing_tool.cpp
@@ -700,6 +700,52 @@ int DRAWING_TOOL::PlacePad( TOOL_EVENT& aEvent )
 }
 
 
+int DRAWING_TOOL::SetAnchor( TOOL_EVENT& aEvent )
+{
+    assert( m_editModules );
+
+    Activate();
+    m_frame->SetToolID( ID_MODEDIT_ANCHOR_TOOL, wxCURSOR_PENCIL,
+                        _( "Place the footprint anchor" ) );
+
+    KIGFX::VIEW_CONTROLS* controls = getViewControls();
+    controls->ShowCursor( true );
+    controls->SetSnapping( true );
+    controls->SetAutoPan( true );
+
+    while( OPT_TOOL_EVENT evt = Wait() )
+    {
+        if( evt->IsClick( BUT_LEFT ) )
+        {
+            MODULE* module = m_board->m_Modules;
+
+            m_frame->SaveCopyInUndoList( module, UR_MODEDIT );
+
+            // set the new relative internal local coordinates of footprint items
+            VECTOR2I cursorPos = controls->GetCursorPosition();
+            wxPoint moveVector = module->GetPosition() - wxPoint( cursorPos.x, cursorPos.y );
+            module->MoveAnchorPosition( moveVector );
+
+            // Usually, we do not need to change twice the anchor position,
+            // so deselect the active tool
+            break;
+        }
+
+        else if( evt->IsCancel() || evt->IsActivate() )
+            break;
+    }
+
+    controls->SetAutoPan( false );
+    controls->SetSnapping( false );
+    controls->ShowCursor( false );
+
+    setTransitions();
+    m_frame->SetToolID( ID_NO_TOOL_SELECTED, wxCURSOR_DEFAULT, wxEmptyString );
+
+    return 0;
+}
+
+
 bool DRAWING_TOOL::drawSegment( int aShape, DRAWSEGMENT* aGraphic )
 {
     // Only two shapes are currently supported
@@ -1534,4 +1580,5 @@ void DRAWING_TOOL::setTransitions()
     Go( &DRAWING_TOOL::PlaceTarget,      COMMON_ACTIONS::placeTarget.MakeEvent() );
     Go( &DRAWING_TOOL::PlaceModule,      COMMON_ACTIONS::placeModule.MakeEvent() );
     Go( &DRAWING_TOOL::PlacePad,         COMMON_ACTIONS::placePad.MakeEvent() );
+    Go( &DRAWING_TOOL::SetAnchor,        COMMON_ACTIONS::setAnchor.MakeEvent() );
 }
diff --git a/pcbnew/tools/drawing_tool.h b/pcbnew/tools/drawing_tool.h
index 29b87560ea..293674a81f 100644
--- a/pcbnew/tools/drawing_tool.h
+++ b/pcbnew/tools/drawing_tool.h
@@ -126,6 +126,12 @@ public:
      */
     int PlacePad( TOOL_EVENT& aEvent );
 
+    /**
+     * Function SetAnchor()
+     * Places the footprint anchor (only in module editor).
+     */
+    int SetAnchor( TOOL_EVENT& aEvent );
+
     /**
      * Function EditModules()
      * Toggles edit module mode. When enabled, one may select parts of modules individually
diff --git a/pcbnew/tools/pcbnew_control.cpp b/pcbnew/tools/pcbnew_control.cpp
index 89b356c38c..3a46cbacff 100644
--- a/pcbnew/tools/pcbnew_control.cpp
+++ b/pcbnew/tools/pcbnew_control.cpp
@@ -452,7 +452,7 @@ int PCBNEW_CONTROL::GridSetOrigin( TOOL_EVENT& aEvent )
             getView()->MarkDirty();
         }
 
-        else if( evt->IsCancel() )
+        else if( evt->IsCancel() || evt->IsActivate() )
             break;
     }