Fixed a crash when starting pcbnew with OpenGL GAL.

common/draw_panel_gal.cpp

@@ -99,12 +99,20 @@ EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWin
     // on updated viewport data.
     m_viewControls = new KIGFX::WX_VIEW_CONTROLS( m_view, this );
 
-    // Set up timer that prevents too frequent redraw commands
-    m_refreshTimer.SetOwner( this );
     m_pendingRefresh = false;
     m_drawing = false;
     m_drawingEnabled = false;
-    Connect( wxEVT_TIMER, wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
+
+    // Set up timer that prevents too frequent redraw commands
+    m_refreshTimer.SetOwner( this );
+    Connect( m_refreshTimer.GetId(), wxEVT_TIMER,
+            wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onRefreshTimer ), NULL, this );
+
+    // Set up timer to execute OnShow() method when the window appears on the screen
+    m_onShowTimer.SetOwner( this );
+    Connect( m_onShowTimer.GetId(), wxEVT_TIMER,
+            wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onShowTimer ), NULL, this );
+    m_onShowTimer.Start( 10 );
 
     LoadGalSettings();
 }
@@ -153,10 +161,7 @@ void EDA_DRAW_PANEL_GAL::onPaint( wxPaintEvent& WXUNUSED( aEvent ) )
     KIGFX::PCB_RENDER_SETTINGS* settings = static_cast<KIGFX::PCB_RENDER_SETTINGS*>( m_painter->GetSettings() );
 
     m_viewControls->UpdateScrollbars();
-
-    m_gal->BeginUpdate();
     m_view->UpdateItems();
-    m_gal->EndUpdate();
 
     m_gal->BeginDrawing();
     m_gal->ClearScreen( settings->GetBackgroundColor() );
@@ -442,7 +447,7 @@ void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
 {
     if( !m_drawingEnabled )
     {
-        if( m_gal->IsInitialized() )
+        if( m_gal && m_gal->IsInitialized() )
         {
             m_drawing = false;
             m_pendingRefresh = true;
@@ -452,7 +457,7 @@ void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
         else
         {
             // Try again soon
-            m_refreshTimer.Start( 100, true );
+            m_refreshTimer.StartOnce( 100 );
             return;
         }
     }
@@ -461,4 +466,15 @@ void EDA_DRAW_PANEL_GAL::onRefreshTimer( wxTimerEvent& aEvent )
     wxPostEvent( this, redrawEvent );
 }
 
+
+void EDA_DRAW_PANEL_GAL::onShowTimer( wxTimerEvent& aEvent )
+{
+    if( IsShownOnScreen() )
+    {
+        m_onShowTimer.Stop();
+        OnShow();
+    }
+}
+
+
 const wxChar EDA_DRAW_PANEL_GAL::GRID_STYLE_CFG[] = wxT( "GridStyle" );

common/gal/cairo/cairo_gal.cpp

@@ -85,8 +85,6 @@ CAIRO_GAL::CAIRO_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener,
 
     // Allocate memory for pixel storage
     allocateBitmaps();
-
-    initSurface();
 }
 
 

common/gal/opengl/opengl_gal.cpp

@@ -127,20 +127,25 @@ OPENGL_GAL::OPENGL_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener,
 
 OPENGL_GAL::~OPENGL_GAL()
 {
-    SetCurrent( *OPENGL_GAL::glContext );
+    gluDeleteTess( tesselator );
+    ClearCache();
+
+    if( IsShown() )
+        SetCurrent( *OPENGL_GAL::glContext );
+
     glFlush();
 
     if( --instanceCounter == 0 )
     {
-        glDeleteTextures( 1, &fontTexture );
-        isBitmapFontLoaded = false;
+        if( isBitmapFontLoaded )
+        {
+            glDeleteTextures( 1, &fontTexture );
+            isBitmapFontLoaded = false;
+        }
 
         delete OPENGL_GAL::glContext;
         glContext = NULL;
     }
-
-    gluDeleteTess( tesselator );
-    ClearCache();
 }
 
 
@@ -302,9 +307,7 @@ void OPENGL_GAL::EndDrawing()
 
 void OPENGL_GAL::BeginUpdate()
 {
-    if( IsShownOnScreen() )
-        SetCurrent( *OPENGL_GAL::glContext );
-
+    SetCurrent( *OPENGL_GAL::glContext );
     cachedManager.Map();
 }
 

common/view/view.cpp

@@ -1,8 +1,9 @@
 /*
  * This program source code file is part of KiCad, a free EDA CAD application.
  *
- * Copyright (C) 2013 CERN
+ * Copyright (C) 2013-2016 CERN
  * @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
+ * @author Maciej Suminski <maciej.suminski@cern.ch>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License
@@ -695,8 +696,8 @@ struct VIEW::unlinkItem
 
 struct VIEW::recacheItem
 {
-    recacheItem( VIEW* aView, GAL* aGal, int aLayer, bool aImmediately ) :
-        view( aView ), gal( aGal ), layer( aLayer ), immediately( aImmediately )
+    recacheItem( VIEW* aView, GAL* aGal, int aLayer ) :
+        view( aView ), gal( aGal ), layer( aLayer )
     {
     }
 
@@ -708,21 +709,8 @@ struct VIEW::recacheItem
         if( group >= 0 )
             gal->DeleteGroup( group );
 
-        if( immediately )
-        {
-            group = gal->BeginGroup();
-            aItem->setGroup( layer, group );
-
-            if( !view->m_painter->Draw( aItem, layer ) )
-                aItem->ViewDraw( layer, gal ); // Alternative drawing method
-
-            gal->EndGroup();
-        }
-        else
-        {
-            aItem->ViewUpdate( VIEW_ITEM::ALL );
-            aItem->setGroup( layer, -1 );
-        }
+        aItem->setGroup( layer, -1 );
+        aItem->ViewUpdate( VIEW_ITEM::ALL );
 
         return true;
     }
@@ -730,7 +718,6 @@ struct VIEW::recacheItem
     VIEW* view;
     GAL* gal;
     int layer;
-    bool immediately;
 };
 
 
@@ -1005,46 +992,29 @@ bool VIEW::areRequiredLayersEnabled( int aLayerId ) const
 }
 
 
-void VIEW::RecacheAllItems( bool aImmediately )
+void VIEW::RecacheAllItems()
 {
     BOX2I r;
 
     r.SetMaximum();
 
-#ifdef __WXDEBUG__
-    prof_counter totalRealTime;
-    prof_start( &totalRealTime );
-#endif /* __WXDEBUG__ */
-
-    m_gal->BeginUpdate();
-
     for( LAYER_MAP_ITER i = m_layers.begin(); i != m_layers.end(); ++i )
     {
         VIEW_LAYER* l = &( ( *i ).second );
 
         if( IsCached( l->id ) )
         {
-            m_gal->SetTarget( l->target );
-            m_gal->SetLayerDepth( l->renderingOrder );
-            recacheItem visitor( this, m_gal, l->id, aImmediately );
+            recacheItem visitor( this, m_gal, l->id );
             l->items->Query( r, visitor );
-            MarkTargetDirty( l->target );
         }
     }
-
-    m_gal->EndUpdate();
-
-#ifdef __WXDEBUG__
-    prof_end( &totalRealTime );
-    wxLogTrace( "GAL_PROFILE", wxT( "RecacheAllItems::immediately: %u %.1f ms" ),
-                aImmediately, totalRealTime.msecs() );
-#endif /* __WXDEBUG__ */
 }
 
 
 void VIEW::UpdateItems()
 {
-    // Update items that need this
+    m_gal->BeginUpdate();
+
     BOOST_FOREACH( VIEW_ITEM* item, m_needsUpdate )
     {
         assert( item->viewRequiredUpdate() != VIEW_ITEM::NONE );
@@ -1052,6 +1022,7 @@ void VIEW::UpdateItems()
         invalidateItem( item, item->viewRequiredUpdate() );
     }
 
+    m_gal->EndUpdate();
     m_needsUpdate.clear();
 }
 

include/class_draw_panel_gal.h

@@ -188,6 +188,12 @@ public:
      */
     virtual bool LoadGalSettings();
 
+    /**
+     * Function OnShow()
+     * Called when the window is shown for the first time.
+     */
+    virtual void OnShow() {}
+
 protected:
     void onPaint( wxPaintEvent& WXUNUSED( aEvent ) );
     void onSize( wxSizeEvent& aEvent );
@@ -195,6 +201,7 @@ protected:
     void onEnter( wxEvent& aEvent );
     void onLostFocus( wxFocusEvent& aEvent );
     void onRefreshTimer( wxTimerEvent& aEvent );
+    void onShowTimer( wxTimerEvent& aEvent );
 
     static const int MinRefreshPeriod = 17;             ///< 60 FPS.
 
@@ -219,6 +226,9 @@ protected:
     /// Timer responsible for preventing too frequent refresh
     wxTimer                  m_refreshTimer;
 
+    /// Timer used to execute OnShow() when the window finally appears on the screen.
+    wxTimer                  m_onShowTimer;
+
     /// Interface for drawing objects on a 2D-surface
     KIGFX::GAL*              m_gal;
 

include/view/view.h

@@ -463,10 +463,8 @@ public:
     /**
      * Function RecacheAllItems()
      * Rebuilds GAL display lists.
-     * @param aForceNow decides if every item should be instantly recached. Otherwise items are
-     * going to be recached when they become visible.
      */
-    void RecacheAllItems( bool aForceNow = false );
+    void RecacheAllItems();
 
     /**
      * Function IsDynamic()

pcbnew/basepcbframe.cpp

@@ -56,9 +56,6 @@
 #include <math/vector2d.h>
 #include <trigo.h>
 #include <pcb_painter.h>
-#include <worksheet_viewitem.h>
-#include <ratsnest_data.h>
-#include <ratsnest_viewitem.h>
 
 #include <tool/tool_manager.h>
 #include <tool/tool_dispatcher.h>
@@ -976,7 +973,7 @@ void PCB_BASE_FRAME::UseGalCanvas( bool aEnable )
         if( m_toolManager )
             m_toolManager->ResetTools( TOOL_BASE::GAL_SWITCH );
 
-        galCanvas->GetView()->RecacheAllItems( true );
+        galCanvas->GetView()->RecacheAllItems();
         galCanvas->SetEventDispatcher( m_toolDispatcher );
         galCanvas->StartDrawing();
     }

pcbnew/class_pcb_layer_widget.cpp

@@ -470,7 +470,7 @@ void PCB_LAYER_WIDGET::OnLayerVisible( int aLayer, bool isVisible, bool isFinal
     {
         KIGFX::VIEW* view = galCanvas->GetView();
         view->SetLayerVisible( aLayer, isVisible );
-        view->RecacheAllItems( true );
+        view->RecacheAllItems();
     }
 
     if( isFinal )

pcbnew/dialogs/dialog_display_options.cpp

@@ -175,7 +175,7 @@ void DIALOG_DISPLAY_OPTIONS::OnOkClick(wxCommandEvent& event)
     KIGFX::PCB_RENDER_SETTINGS* settings =
             static_cast<KIGFX::PCB_RENDER_SETTINGS*>( painter->GetSettings() );
     settings->LoadDisplayOptions( displ_opts );
-    view->RecacheAllItems( true );
+    view->RecacheAllItems();
 
     m_Parent->GetCanvas()->Refresh();
 

pcbnew/pcb_draw_panel_gal.cpp

@@ -165,18 +165,6 @@ void PCB_DRAW_PANEL_GAL::DisplayBoard( const BOARD* aBoard )
 
     // Display settings
     UseColorScheme( aBoard->GetColorsSettings() );
-
-    PCB_BASE_FRAME* frame = dynamic_cast<PCB_BASE_FRAME*>( GetParent() );
-
-    if( frame )
-    {
-        SetTopLayer( frame->GetActiveLayer() );
-        DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*) frame->GetDisplayOptions();
-        static_cast<KIGFX::PCB_RENDER_SETTINGS*>(
-            m_view->GetPainter()->GetSettings() )->LoadDisplayOptions( displ_opts );
-    }
-
-    m_view->RecacheAllItems( true );
 }
 
 
@@ -363,6 +351,22 @@ void PCB_DRAW_PANEL_GAL::GetMsgPanelInfo( std::vector<MSG_PANEL_ITEM>& aList )
 }
 
 
+void PCB_DRAW_PANEL_GAL::OnShow()
+{
+    PCB_BASE_FRAME* frame = dynamic_cast<PCB_BASE_FRAME*>( GetParent() );
+
+    if( frame )
+    {
+        SetTopLayer( frame->GetActiveLayer() );
+        DISPLAY_OPTIONS* displ_opts = (DISPLAY_OPTIONS*) frame->GetDisplayOptions();
+        static_cast<KIGFX::PCB_RENDER_SETTINGS*>(
+            m_view->GetPainter()->GetSettings() )->LoadDisplayOptions( displ_opts );
+    }
+
+    m_view->RecacheAllItems();
+}
+
+
 void PCB_DRAW_PANEL_GAL::setDefaultLayerOrder()
 {
     for( LAYER_NUM i = 0; (unsigned) i < sizeof( GAL_LAYER_ORDER ) / sizeof( LAYER_NUM ); ++i )

pcbnew/pcb_draw_panel_gal.h

@@ -80,6 +80,9 @@ public:
     ///> @copydoc EDA_DRAW_PANEL_GAL::GetMsgPanelInfo()
     void GetMsgPanelInfo( std::vector<MSG_PANEL_ITEM>& aList );
 
+    ///> @copydoc EDA_DRAW_PANEL_GAL::OnShow()
+    void OnShow() override;
+
 protected:
     ///> Reassigns layer order to the initial settings.
     void setDefaultLayerOrder();