Grid settings apply to GAL based rendering.

common/drawframe.cpp

@@ -236,6 +236,14 @@ void EDA_DRAW_FRAME::SkipNextLeftButtonReleaseEvent()
 void EDA_DRAW_FRAME::OnToggleGridState( wxCommandEvent& aEvent )
 {
     SetGridVisibility( !IsGridVisible() );
+#ifdef KICAD_GAL
+    if( m_galCanvasActive )
+    {
+        m_galCanvas->GetGAL()->SetGridVisibility( IsGridVisible() );
+        m_galCanvas->Refresh();
+    }
+    else
+#endif /* KICAD_GAL */
         m_canvas->Refresh();
 }
 
@@ -388,6 +396,14 @@ void EDA_DRAW_FRAME::OnSelectGrid( wxCommandEvent& event )
     m_LastGridSizeId = id - ID_POPUP_GRID_LEVEL_1000;
     screen->SetGrid( id );
     screen->SetCrossHairPosition( screen->RefPos( true ) );
+#ifdef KICAD_GAL
+    if( m_galCanvasActive )
+    {
+        KiGfx::GAL* gal = m_galCanvas->GetGAL();
+        gal->SetGridSize( VECTOR2D( screen->GetGrid().m_Size ) );
+    }
+#endif /* KICAD_GAL */
+
     Refresh();
 }
 
@@ -945,33 +961,45 @@ void EDA_DRAW_FRAME::UseGalCanvas( bool aEnable )
     KiGfx::VIEW* view = m_galCanvas->GetView();
     KiGfx::GAL* gal = m_galCanvas->GetGAL();
 
-    if( aEnable && m_galCanvasActive )
-    {
-        // When we switch between GAL based canvases, all we need is a refresh
-        m_galCanvas->Refresh();
-    }
-
-    if( !( aEnable ^ m_galCanvasActive ) )
-        return;
-
     double zoomFactor = gal->GetWorldScale() / gal->GetZoomFactor();
 
     // Display the same view after canvas switching
     if( aEnable )
     {
-        double zoom =  1 / ( zoomFactor * m_canvas->GetZoom() );
+        BASE_SCREEN* screen = GetScreen();
-        view->SetScale( zoom );
 
+        // Switch to GAL rendering
+        if( !m_galCanvasActive )
+        {
+            // Change view settings only if GAL was not active previously
+            double zoom = 1.0 / ( zoomFactor * m_canvas->GetZoom() );
+            view->SetScale( zoom );
             view->SetCenter( VECTOR2D( m_canvas->GetScreenCenterLogicalPosition() ) );
         }
+
+        // Set up grid settings
+        gal->SetGridVisibility( IsGridVisible() );
+        // Default grid color - dark cyan does not look good
+        //gal->SetGridColor( KiGfx::COLOR4D( GetGridColor() ) );
+        gal->SetGridColor( KiGfx::COLOR4D( 0.1, 0.1, 0.1, 1.0 ) );
+        gal->SetGridSize( VECTOR2D( screen->GetGridSize() ) );
+        gal->SetGridOrigin( VECTOR2D( screen->GetGridOrigin() ) );
+        gal->SetGridOriginMarkerSize( 15 );
+        gal->SetGridDrawThreshold( 10 );
+    }
     else
     {
-        double zoom = 1 / ( zoomFactor * view->GetScale() );
+        // Switch to standard rendering
+        if( m_galCanvasActive )
+        {
+            // Change view settings only if GAL was active previously
+            double zoom = 1.0 / ( zoomFactor * view->GetScale() );
             m_canvas->SetZoom( zoom );
 
             VECTOR2D center = view->GetCenter();
             RedrawScreen( wxPoint( center.x, center.y ), false );
         }
+    }
 
     m_canvas->SetEvtHandlerEnabled( !aEnable );
     m_galCanvas->SetEvtHandlerEnabled( aEnable );

common/drawpanel_gal.cpp

@@ -140,11 +140,6 @@ void EDA_DRAW_PANEL_GAL::Refresh( bool eraseBackground, const wxRect* rect )
     m_gal->BeginDrawing();
     m_gal->SetBackgroundColor( KiGfx::COLOR4D( 0, 0, 0, 1.0 ) );
     m_gal->ClearScreen();
-    m_gal->SetGridOrigin( VECTOR2D( 0, 0 ) );
-    m_gal->SetGridOriginMarkerSize( 15 );
-    m_gal->SetGridSize( VECTOR2D( METRIC_UNIT_LENGTH / 10000.0, METRIC_UNIT_LENGTH / 10000.0 ) );
-    m_gal->SetGridDrawThreshold( 10 );
-    m_gal->SetLayerDepth( 0 );
 
     m_gal->DrawGrid();
     m_view->Redraw();

common/gal/graphics_abstraction_layer.cpp

@@ -44,6 +44,7 @@ GAL::GAL()
     SetZoomFactor( 1.0 );
     SetFillColor( COLOR4D( 0.0, 0.0, 0.0, 0.0 ) );
     SetStrokeColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
+    SetGridVisibility( true );
     SetGridColor( COLOR4D( 1, 1, 1, 0.1 ) );
     SetCoarseGrid( 5 );
     SetLineWidth( 1.0 );
@@ -58,6 +59,9 @@ GAL::~GAL()
 
 void GAL::DrawGrid()
 {
+    if( !gridVisibility )
+        return;
+
     // The grid consists of lines
     // For the drawing the start points, end points and increments have to be calculated in world coordinates
     VECTOR2D    screenStartPoint( 0, 0 );
@@ -98,6 +102,7 @@ void GAL::DrawGrid()
 
     double origSize = (double) gridOriginMarkerSize / worldScale;
 
+    // Draw the origin marker
     SetStrokeColor( COLOR4D( 1.0, 1.0, 1.0, 1.0 ) );
     SetIsFill( false );
     DrawLine( gridOrigin + VECTOR2D( -origSize, -origSize ), gridOrigin + VECTOR2D( origSize, origSize ) );
@@ -109,6 +114,7 @@ void GAL::DrawGrid()
     if( std::max( gridScreenSizeDense, gridScreenSizeCoarse ) < gridDrawThreshold )
         return;
 
+    SetLayerDepth( 0.0 );
     // Now draw the grid, every coarse grid line gets the double width
     for( int j = gridStartY; j < gridEndY; j += 1 )
     {

common/gal/opengl/opengl_gal.cpp

@@ -1909,10 +1909,12 @@ void OPENGL_GAL::DrawGridLine( const VECTOR2D& aStartPoint, const VECTOR2D& aEnd
 
     if( aStartPoint.x == aEndPoint.x )
     {
+        // Vertical grid line
         perpendicularVector = VECTOR2D( 0.5 * lineWidth, 0 );
     }
     else
     {
+        // Horizontal grid line
         perpendicularVector = VECTOR2D( 0, 0.5 * lineWidth );
     }
 

include/gal/graphics_abstraction_layer.h

@@ -524,6 +524,16 @@ public:
     // Grid methods
     // -------------
 
+    /**
+     * @brief Sets the visibility setting of the grid.
+     *
+     * @param aVisibility is the new visibility setting of the grid.
+     */
+    inline void SetGridVisibility( bool aVisibility )
+    {
+        gridVisibility = aVisibility;
+    }
+
     /**
      * @brief Set the origin point for the grid.
      *
@@ -698,6 +708,8 @@ protected:
     double             layerDepth;             ///< The actual layer depth
     VECTOR2D           depthRange;             ///< Range of the depth
 
+    // Grid settings
+    bool               gridVisibility;         ///< Should the grid be shown
     VECTOR2D           gridSize;               ///< The grid size
     VECTOR2D           gridOrigin;             ///< The grid origin
     COLOR4D            gridColor;              ///< Color of the grid