Refactored code responsible for high contrast mode. Now it allows to have more than one layer on the top.

Selecting layer using the dropdown list on the toolbar influences the layer displayed in high contrast mode.

common/view/view.cpp

@@ -39,11 +39,6 @@
 
 using namespace KiGfx;
 
-// Static constants
-const int VIEW::VIEW_MAX_LAYERS = 64;
-// Top layer depth
-const int VIEW::TOP_LAYER       = -1;
-
 void VIEW::AddLayer( int aLayer, bool aDisplayOnly )
 {
     if( m_layers.find( aLayer ) == m_layers.end() )
@@ -140,14 +135,12 @@ int VIEW::Query( const BOX2I& aRect, std::vector<LayerItemPair>& aResult )
 
 
 VIEW::VIEW( bool aIsDynamic ) :
-    m_enableTopLayer( false ),
+    m_enableOrderModifier( false ),
     m_scale ( 1.0 ),
     m_painter( NULL ),
     m_gal( NULL ),
     m_dynamic( aIsDynamic )
 {
-    // By default there is no layer on the top
-    m_topLayer.enabled = false;
 }
 
 
@@ -395,63 +388,75 @@ void VIEW::ChangeLayerDepth( int aLayer, int aDepth )
 }
 
 
-void VIEW::SetTopLayer( int aLayer )
+void VIEW::SetTopLayer( int aLayer, bool aEnabled )
 {
-    // Restore previous order
-    if( m_topLayer.enabled )
+    if( aEnabled )
     {
-        m_layers[m_topLayer.id].renderingOrder = m_topLayer.renderingOrder;
-        ChangeLayerDepth( m_topLayer.id, m_topLayer.renderingOrder );
-    }
+        if( m_topLayers.count( aLayer ) == 1 )
+            return;
 
-    if( aLayer >= 0 && aLayer < VIEW_MAX_LAYERS )
+        m_topLayers.insert( aLayer );
+
+        // Move the layer closer to front
+        if( m_enableOrderModifier )
+            m_layers[aLayer].renderingOrder += TOP_LAYER_MODIFIER;
+    }
+    else
     {
-        // Save settings, so it can be restored later
-        m_topLayer.renderingOrder = m_layers[aLayer].renderingOrder;
-        m_topLayer.id = m_layers[aLayer].id;
+        if( m_topLayers.count( aLayer ) == 0 )
+            return;
 
-        // Apply new settings only if the option is enabled
-        if( m_enableTopLayer )
-        {
-            m_layers[aLayer].renderingOrder = TOP_LAYER;
-            ChangeLayerDepth( aLayer, TOP_LAYER );
-        }
+        m_topLayers.erase( aLayer );
 
-        // Set the flag saying that settings stored in m_topLayer are valid
-        m_topLayer.enabled = true;
+        // Restore the previous rendering order
+        if( m_enableOrderModifier )
+            m_layers[aLayer].renderingOrder -= TOP_LAYER_MODIFIER;
+    }
+}
+
+
+void VIEW::EnableTopLayer( bool aEnable )
+{
+    if( aEnable == m_enableOrderModifier ) return;
+    m_enableOrderModifier = aEnable;
+
+    std::set<unsigned int>::iterator it;
+    if( aEnable )
+    {
+        for( it = m_topLayers.begin(); it != m_topLayers.end(); ++it )
+            m_layers[*it].renderingOrder += TOP_LAYER_MODIFIER;
     }
     else
     {
-        // There are no valid settings in m_topLayer
-        m_topLayer.enabled = false;
+        for( it = m_topLayers.begin(); it != m_topLayers.end(); ++it )
+            m_layers[*it].renderingOrder -= TOP_LAYER_MODIFIER;
     }
-
-    sortLayers();
 }
 
 
-void VIEW::EnableTopLayer( bool aEnable )
+void VIEW::ClearTopLayers()
 {
-    if( aEnable == m_enableTopLayer ) return;
+    std::set<unsigned int>::iterator it;
 
-    // Use stored settings only if applicable
-    // (topLayer.enabled == false means there are no valid settings stored)
-    if( m_topLayer.enabled )
+    if( m_enableOrderModifier )
     {
-        if( aEnable )
-        {
-            m_layers[m_topLayer.id].renderingOrder = TOP_LAYER;
-            ChangeLayerDepth( m_topLayer.id, TOP_LAYER );
-        }
-        else
-        {
-            m_layers[m_topLayer.id].renderingOrder = m_topLayer.renderingOrder;
-            ChangeLayerDepth( m_topLayer.id, m_topLayer.renderingOrder );
-        }
+        // Restore the previous rendering order for layers that were marked as top
+        for( it = m_topLayers.begin(); it != m_topLayers.end(); ++it )
+            m_layers[*it].renderingOrder -= TOP_LAYER_MODIFIER;
     }
+
+    m_topLayers.clear();
+}
+
+
+void VIEW::UpdateAllLayersOrder()
+{
     sortLayers();
 
-    m_enableTopLayer = aEnable;
+    BOOST_FOREACH( LayerMap::value_type& l, m_layers )
+    {
+        ChangeLayerDepth( l.first, l.second.renderingOrder );
+    }
 }
 
 
@@ -513,7 +518,7 @@ void VIEW::redrawRect( const BOX2I& aRect )
         {
             drawItem drawFunc( this, l );
 
-            m_gal->SetLayerDepth( static_cast<double>( l->renderingOrder ) );
+            m_gal->SetLayerDepth( l->renderingOrder );
             l->items->Query( aRect, drawFunc );
             l->isDirty = false;
         }
@@ -703,7 +708,7 @@ void VIEW::RecacheAllItems( bool aImmediately )
 
         if( l->cached )
         {
-            m_gal->SetLayerDepth( (double) l->renderingOrder );
+            m_gal->SetLayerDepth( l->renderingOrder );
             recacheLayer visitor( this, m_gal, l->id, aImmediately );
             l->items->Query( r, visitor );
         }

include/view/view.h

@@ -26,6 +26,7 @@
 #define __VIEW_H
 
 #include <vector>
+#include <set>
 #include <boost/unordered/unordered_map.hpp>
 
 #include <math/box2.h>
@@ -305,7 +306,7 @@ public:
      * @param aLayer: the layer or -1 in case when no particular layer should
      * be displayed on the top.
      */
-    void    SetTopLayer( int aLayer );
+    void    SetTopLayer( int aLayer, bool aEnabled = true );
 
     /**
      * Function EnableTopLayer()
@@ -316,6 +317,20 @@ public:
      */
     void    EnableTopLayer( bool aEnable );
 
+    /**
+     * Function ClearTopLayers()
+     * Removes all layers from the on-the-top set (they are no longer displayed over the rest of
+     * layers).
+     */
+    void    ClearTopLayers();
+
+    /**
+     * Function UpdateLayerOrder()
+     * Does everything that is needed to apply the rendering order of layers. It has to be called
+     * after modification of renderingOrder field of LAYER.
+     */
+    void    UpdateAllLayersOrder();
+
     /**
      * Function Redraw()
      * Immediately redraws the whole view.
@@ -344,8 +359,7 @@ public:
      */
     bool IsDynamic() const { return m_dynamic; }
 
-    static const int VIEW_MAX_LAYERS;            ///* maximum number of layers that may be shown
-    static const int TOP_LAYER;                  ///* layer number for displaying items on the top
+    static const int VIEW_MAX_LAYERS = 64;       ///* maximum number of layers that may be shown
 
 private:
     struct VIEW_LAYER
@@ -377,11 +391,8 @@ private:
     struct updateItemsColor;
     struct changeItemsDepth;
 
-    ///* Saves current top layer settings in order to restore it when it's not top anymore
-    VIEW_LAYER m_topLayer;
-
-    ///* Whether to use top layer settings or not
-    bool m_enableTopLayer;
+    ///* Whether to use rendering order modifier or not
+    bool m_enableOrderModifier;
 
     ///* Redraws contents within rect aRect
     void redrawRect( const BOX2I& aRect );
@@ -412,6 +423,9 @@ private:
     /// Sorted list of pointers to members of m_layers.
     LayerOrder  m_orderedLayers;
 
+    /// Stores set of layers that are displayed on the top
+    std::set<unsigned int> m_topLayers;
+
     /// Center point of the VIEW (the point at which we are looking at)
     VECTOR2D    m_center;
 
@@ -427,6 +441,9 @@ private:
     /// Dynamic VIEW (eg. display PCB in window) allows changes once it is built,
     /// static (eg. image/PDF) - does not.
     bool        m_dynamic;
+
+    /// Rendering order modifier for layers that are marked as top layers
+    static const int TOP_LAYER_MODIFIER = -VIEW_MAX_LAYERS;
 };
 } // namespace KiGfx
 

include/wxPcbStruct.h

@@ -133,13 +133,7 @@ protected:
      * will change the currently active layer to \a aLayer and also
      * update the PCB_LAYER_WIDGET.
      */
-    void setActiveLayer( LAYER_NUM aLayer, bool doLayerWidgetUpdate = true )
-    {
-        ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer = aLayer;
-
-        if( doLayerWidgetUpdate )
-            syncLayerWidgetLayer();
-    }
+    void setActiveLayer( LAYER_NUM aLayer, bool doLayerWidgetUpdate = true );
 
     /**
      * Function getActiveLayer

pcbnew/basepcbframe.cpp

@@ -258,13 +258,9 @@ void PCB_BASE_FRAME::SetBoard( BOARD* aBoard )
             view->SetLayerVisible( ITEM_GAL_LAYER( i ), m_Pcb->IsElementVisible( i ) );
         }
 
-        view->SetTopLayer( m_Pcb->GetLayer() );
-
         view->RecacheAllItems( true );
         if( m_galCanvasActive )
-        {
             m_galCanvas->Refresh();
-        }
     }
 }
 

pcbnew/class_pcb_layer_widget.cpp

@@ -356,21 +356,10 @@ bool PCB_LAYER_WIDGET::OnLayerSelect( LAYER_NUM aLayer )
     // false from this function.
     myframe->setActiveLayer( aLayer, false );
 
-    // Set display settings for high contrast mode
-    KiGfx::VIEW* view = myframe->GetGalCanvas()->GetView();
-    view->GetPainter()->GetSettings()->SetActiveLayer( aLayer );
-    view->UpdateAllLayersColor();
-    view->SetTopLayer( aLayer );
-
     if( m_alwaysShowActiveCopperLayer )
         OnLayerSelected();
-    else if(DisplayOpt.ContrastModeDisplay)
-    {
-        if( myframe->IsGalCanvasActive() )
-            myframe->GetGalCanvas()->Refresh();
-        else
-            myframe->GetCanvas()->Refresh();
-    }
+    else if( DisplayOpt.ContrastModeDisplay )
+        myframe->GetCanvas()->Refresh();
 
     return true;
 }

pcbnew/dialogs/dialog_general_options.cpp

@@ -232,16 +232,27 @@ void PCB_EDIT_FRAME::OnSelectOptionToolbar( wxCommandEvent& event )
         break;
 
     case ID_TB_OPTIONS_SHOW_HIGH_CONTRAST_MODE:
+    {
         DisplayOpt.ContrastModeDisplay = state;
 
         // Apply new display options to the GAL canvas (this is faster than recaching)
         settings->LoadDisplayOptions( DisplayOpt );
-        m_galCanvas->GetView()->EnableTopLayer( state );
-        m_galCanvas->GetView()->UpdateAllLayersColor();
+
+        KiGfx::VIEW* view = m_galCanvas->GetView();
+        LAYER_NUM layer = getActiveLayer();
+
+        view->GetPainter()->GetSettings()->SetActiveLayer( layer );
+        view->UpdateAllLayersColor();
+
+        view->EnableTopLayer( state );
+        view->ClearTopLayers();
+        view->SetTopLayer( layer );
+        view->UpdateAllLayersOrder();
 
         if( !IsGalCanvasActive() )
             m_canvas->Refresh();
         break;
+    }
 
     case ID_TB_OPTIONS_SHOW_EXTRA_VERTICAL_TOOLBAR_MICROWAVE:
         m_show_microwave_tools = state;

pcbnew/pcbframe.cpp

@@ -56,6 +56,8 @@
 #include <dialog_helpers.h>
 #include <dialog_plot.h>
 #include <convert_from_iu.h>
+#include <view/view.h>
+#include <painter.h>
 
 
 #if defined(KICAD_SCRIPTING) || defined(KICAD_SCRIPTING_WXPYTHON)
@@ -741,6 +743,31 @@ bool PCB_EDIT_FRAME::IsMicroViaAcceptable( void )
 }
 
 
+void PCB_EDIT_FRAME::setActiveLayer( LAYER_NUM aLayer, bool doLayerWidgetUpdate )
+{
+    ( (PCB_SCREEN*) GetScreen() )->m_Active_Layer = aLayer;
+
+    // Set display settings for high contrast mode
+    KiGfx::VIEW* view = m_galCanvas->GetView();
+
+    if( DisplayOpt.ContrastModeDisplay )
+    {
+        view->GetPainter()->GetSettings()->SetActiveLayer( aLayer );
+        view->UpdateAllLayersColor();
+
+        view->ClearTopLayers();
+        view->SetTopLayer( aLayer );
+        view->UpdateAllLayersOrder();
+
+        if( m_galCanvasActive )
+            m_galCanvas->Refresh();
+    }
+
+    if( doLayerWidgetUpdate )
+        syncLayerWidgetLayer();
+}
+
+
 void PCB_EDIT_FRAME::syncLayerWidgetLayer()
 {
     m_Layers->SelectLayer( getActiveLayer() );