Give all GAL canvases access to a GAL_DISPLAY_OPTIONS structure instance

Also loads the gal options when loading a canvas, as the canvas
otherwise might not register the initial settings.

common/basic_gal.cpp

@@ -39,7 +39,10 @@
 
 using namespace KIGFX;
 
-BASIC_GAL basic_gal;
+KIGFX::GAL_DISPLAY_OPTIONS basic_displayOptions;
+
+// the basic GAL doesn't get an external display option object
+BASIC_GAL basic_gal( basic_displayOptions );
 
 const VECTOR2D BASIC_GAL::transform( const VECTOR2D& aPoint ) const
 {

common/draw_panel_gal.cpp

@@ -114,15 +114,12 @@ EDA_DRAW_PANEL_GAL::EDA_DRAW_PANEL_GAL( wxWindow* aParentWindow, wxWindowID aWin
     Connect( m_onShowTimer.GetId(), wxEVT_TIMER,
             wxTimerEventHandler( EDA_DRAW_PANEL_GAL::onShowTimer ), NULL, this );
     m_onShowTimer.Start( 10 );
-
-    LoadGalSettings();
 }
 
 
 EDA_DRAW_PANEL_GAL::~EDA_DRAW_PANEL_GAL()
 {
     StopDrawing();
-    SaveGalSettings();
 
     assert( !m_drawing );
 
@@ -353,7 +350,7 @@ bool EDA_DRAW_PANEL_GAL::SwitchBackend( GAL_TYPE aGalType )
             break;
 
         case GAL_TYPE_CAIRO:
-            new_gal = new KIGFX::CAIRO_GAL( this, this, this );
+            new_gal = new KIGFX::CAIRO_GAL( m_options, this, this, this );
             break;
 
         default:
@@ -363,19 +360,21 @@ bool EDA_DRAW_PANEL_GAL::SwitchBackend( GAL_TYPE aGalType )
         case GAL_TYPE_NONE:
             // KIGFX::GAL is a stub - it actually does cannot display anything,
             // but prevents code relying on GAL canvas existence from crashing
-            new_gal = new KIGFX::GAL();
+            new_gal = new KIGFX::GAL( m_options );
             break;
         }
     }
     catch( std::runtime_error& err )
     {
-        new_gal = new KIGFX::GAL();
+        new_gal = new KIGFX::GAL( m_options );
         aGalType = GAL_TYPE_NONE;
         DisplayError( m_parent, wxString( err.what() ) );
         result = false;
     }
 
-    SaveGalSettings();
+    // trigger update of the gal options in case they differ
+    // from the defaults
+    m_options.NotifyChanged();
 
     assert( new_gal );
     delete m_gal;
@@ -391,49 +390,11 @@ bool EDA_DRAW_PANEL_GAL::SwitchBackend( GAL_TYPE aGalType )
         m_view->SetGAL( m_gal );
 
     m_backend = aGalType;
-    LoadGalSettings();
 
     return result;
 }
 
 
-bool EDA_DRAW_PANEL_GAL::SaveGalSettings()
-{
-    if( !m_edaFrame || !m_gal )
-        return false;
-
-    wxConfigBase* cfg = Kiface().KifaceSettings();
-    wxString baseCfgName = m_edaFrame->GetName();
-
-    if( !cfg )
-        return false;
-
-    if( !cfg->Write( baseCfgName + GRID_STYLE_CFG, (long) GetGAL()->GetGridStyle() ) )
-        return false;
-
-    return true;
-}
-
-
-bool EDA_DRAW_PANEL_GAL::LoadGalSettings()
-{
-    if( !m_edaFrame || !m_gal )
-        return false;
-
-    wxConfigBase* cfg = Kiface().KifaceSettings();
-    wxString baseCfgName = m_edaFrame->GetName();
-
-    if( !cfg )
-        return false;
-
-    long gridStyle;
-    cfg->Read( baseCfgName + GRID_STYLE_CFG, &gridStyle, (long) KIGFX::GRID_STYLE::GRID_STYLE_DOTS );
-    GetGAL()->SetGridStyle( (KIGFX::GRID_STYLE) gridStyle );
-
-    return true;
-}
-
-
 void EDA_DRAW_PANEL_GAL::onEvent( wxEvent& aEvent )
 {
     if( m_lostFocus )

common/gal/cairo/cairo_gal.cpp

@@ -42,8 +42,10 @@ using namespace KIGFX;
 
 
 
-CAIRO_GAL::CAIRO_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener,
+CAIRO_GAL::CAIRO_GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions,
+        wxWindow* aParent, wxEvtHandler* aMouseListener,
         wxEvtHandler* aPaintListener, const wxString& aName ) :
+    GAL( aDisplayOptions ),
     wxWindow( aParent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxEXPAND, aName )
 {
     parentWindow  = aParent;
@@ -103,6 +105,20 @@ CAIRO_GAL::~CAIRO_GAL()
 }
 
 
+bool CAIRO_GAL::updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions )
+{
+    bool refresh = false;
+
+    if( super::updatedGalDisplayOptions( aOptions ) )
+    {
+        Refresh();
+        refresh = true;
+    }
+
+    return refresh;
+}
+
+
 void CAIRO_GAL::BeginDrawing()
 {
     initSurface();

common/gal/gal_display_options.cpp

@@ -26,7 +26,11 @@
 
 using namespace KIGFX;
 
-static const wxString GalGLAntialiasingKeyword( wxT( "OpenGLAntialiasingMode" ) );
+/*
+ * Config option strings
+ */
+static const wxString GalGLAntialiasingKeyword( "OpenGLAntialiasingMode" );
+
 
 GAL_DISPLAY_OPTIONS::GAL_DISPLAY_OPTIONS()
     : gl_antialiasing_mode( OPENGL_ANTIALIASING_MODE::NONE )
@@ -36,8 +40,8 @@ GAL_DISPLAY_OPTIONS::GAL_DISPLAY_OPTIONS()
 void GAL_DISPLAY_OPTIONS::ReadConfig( wxConfigBase* aCfg, wxString aBaseName )
 {
     aCfg->Read( aBaseName + GalGLAntialiasingKeyword,
-        reinterpret_cast<long*>(&gl_antialiasing_mode),
-        (long)KIGFX::OPENGL_ANTIALIASING_MODE::NONE );
+                reinterpret_cast<long*>( &gl_antialiasing_mode ),
+                static_cast<long>( KIGFX::OPENGL_ANTIALIASING_MODE::NONE ) );
 
     NotifyChanged();
 }
@@ -46,7 +50,7 @@ void GAL_DISPLAY_OPTIONS::ReadConfig( wxConfigBase* aCfg, wxString aBaseName )
 void GAL_DISPLAY_OPTIONS::WriteConfig( wxConfigBase* aCfg, wxString aBaseName )
 {
     aCfg->Write( aBaseName + GalGLAntialiasingKeyword,
-                    static_cast<long>(gl_antialiasing_mode) );
+                 static_cast<long>( gl_antialiasing_mode ) );
 }
 
 

common/gal/graphics_abstraction_layer.cpp

@@ -37,7 +37,8 @@ using namespace KIGFX;
 const double GAL::METRIC_UNIT_LENGTH = 1e9;
 
 
-GAL::GAL() :
+GAL::GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions ) :
+    options( aDisplayOptions ),
     strokeFont( this )
 {
     // Set the default values for the internal variables
@@ -68,6 +69,9 @@ GAL::GAL() :
     SetCursorEnabled( false );
 
     strokeFont.LoadNewStrokeFont( newstroke_font, newstroke_font_bufsize );
+
+    // subscribe for settings updates
+    observerLink = options.Subscribe( this );
 }
 
 
@@ -75,6 +79,23 @@ GAL::~GAL()
 {
 }
 
+void GAL::OnGalDisplayOptionsChanged( const GAL_DISPLAY_OPTIONS& aOptions )
+{
+    // defer to the child class first
+    updatedGalDisplayOptions( aOptions );
+
+    // there is no refresh to do at this level
+}
+
+
+bool GAL::updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions )
+{
+    bool refresh = false;
+
+    // tell the derived class if the base class needs an update or not
+    return refresh;
+}
+
 
 void GAL::SetTextAttributes( const EDA_TEXT* aText )
 {

common/gal/opengl/opengl_gal.cpp

@@ -66,9 +66,10 @@ SHADER* OPENGL_GAL::shader = NULL;
 OPENGL_GAL::OPENGL_GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions, wxWindow* aParent,
                         wxEvtHandler* aMouseListener, wxEvtHandler* aPaintListener,
                         const wxString& aName ) :
+    GAL( aDisplayOptions ),
     wxGLCanvas( aParent, wxID_ANY, (int*) glAttributes, wxDefaultPosition, wxDefaultSize,
                 wxEXPAND, aName ),
-    options( aDisplayOptions ), mouseListener( aMouseListener ), paintListener( aPaintListener )
+    mouseListener( aMouseListener ), paintListener( aPaintListener )
 {
     if( glMainContext == NULL )
     {
@@ -101,8 +102,6 @@ OPENGL_GAL::OPENGL_GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions, wxWindow* aParent,
     SetViewWantsBestResolution( true );
 #endif
 
-    observerLink = options.Subscribe( this );
-
     // Connecting the event handlers
     Connect( wxEVT_PAINT,           wxPaintEventHandler( OPENGL_GAL::onPaint ) );
 
@@ -182,18 +181,27 @@ OPENGL_GAL::~OPENGL_GAL()
         GL_CONTEXT_MANAGER::Get().DestroyCtx( glMainContext );
         glMainContext = NULL;
     }
-
 }
 
 
-void OPENGL_GAL::OnGalDisplayOptionsChanged( const GAL_DISPLAY_OPTIONS& aDisplayOptions )
+bool OPENGL_GAL::updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions )
 {
+    bool refresh = false;
+
     if( options.gl_antialiasing_mode != compositor->GetAntialiasingMode() )
     {
         compositor->SetAntialiasingMode( options.gl_antialiasing_mode );
         isFramebufferInitialized = false;
+        refresh = true;
+    }
+
+    if( super::updatedGalDisplayOptions( aOptions ) || refresh )
+    {
         Refresh();
+        refresh = true;
     }
+
+    return refresh;
 }
 
 

include/basic_gal.h

@@ -64,7 +64,8 @@ private:
     std::stack <TRANSFORM_PRM>  m_transformHistory;
 
 public:
-    BASIC_GAL()
+    BASIC_GAL( KIGFX::GAL_DISPLAY_OPTIONS& aDisplayOptions ) :
+        GAL( aDisplayOptions )
     {
         m_DC = NULL;
         m_Color = RED;

include/class_draw_panel_gal.h

@@ -177,18 +177,6 @@ public:
         return m_edaFrame;
     }
 
-    /**
-     * Function SaveGalSettings()
-     * Stores GAL related settings in the configuration storage.
-     */
-    virtual bool SaveGalSettings();
-
-    /**
-     * Function LoadGalSettings()
-     * Loads GAL related settings from the configuration storage.
-     */
-    virtual bool LoadGalSettings();
-
     /**
      * Function OnShow()
      * Called when the window is shown for the first time.

include/gal/cairo/cairo_gal.h

@@ -81,7 +81,8 @@ public:
      *
      * @param aName is the name of this window for use by wxWindow::FindWindowByName()
      */
-    CAIRO_GAL( wxWindow* aParent, wxEvtHandler* aMouseListener = NULL,
+    CAIRO_GAL( GAL_DISPLAY_OPTIONS& aDisplayOptions,
+               wxWindow* aParent, wxEvtHandler* aMouseListener = NULL,
                wxEvtHandler* aPaintListener = NULL, const wxString& aName = wxT( "CairoCanvas" ) );
 
     virtual ~CAIRO_GAL();
@@ -352,6 +353,9 @@ private:
 
     int wxBufferWidth;
 
+    ///> Cairo-specific update handlers
+    bool updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions ) override;
+
     void flushPath();
     // Methods
     void storePath();                           ///< Store the actual path

include/gal/gal_display_options.h

@@ -29,9 +29,16 @@
 class wxConfigBase;
 class wxString;
 
-namespace KIGFX {
-
-    class GAL_DISPLAY_OPTIONS;
+namespace KIGFX
+{
+    /**
+     * GridStyle: Type definition of the grid style
+     */
+    enum GRID_STYLE
+    {
+        GRID_STYLE_LINES,   ///< Use lines for the grid
+        GRID_STYLE_DOTS     ///< Use dots for the grid
+    };
 
     enum class OPENGL_ANTIALIASING_MODE : long
     {
@@ -42,6 +49,8 @@ namespace KIGFX {
         SUPERSAMPLING_X4 = 4
     };
 
+    class GAL_DISPLAY_OPTIONS;
+
     class GAL_DISPLAY_OPTIONS_OBSERVER
     {
     public:
@@ -53,12 +62,12 @@ namespace KIGFX {
     public:
         GAL_DISPLAY_OPTIONS();
 
-        OPENGL_ANTIALIASING_MODE gl_antialiasing_mode;
-
         void ReadConfig ( wxConfigBase* aCfg, wxString aBaseName );
         void WriteConfig( wxConfigBase* aCfg, wxString aBaseName );
 
         void NotifyChanged();
+
+        OPENGL_ANTIALIASING_MODE gl_antialiasing_mode;
     };
 
 }

include/gal/graphics_abstraction_layer.h

@@ -36,6 +36,7 @@
 #include <gal/color4d.h>
 #include <gal/definitions.h>
 #include <gal/stroke_font.h>
+#include <gal/gal_display_options.h>
 #include <newstroke_font.h>
 
 class SHAPE_LINE_CHAIN;
@@ -43,15 +44,6 @@ class SHAPE_POLY_SET;
 
 namespace KIGFX
 {
-/**
- * GridStyle: Type definition of the grid style
- */
-enum GRID_STYLE
-{
-    GRID_STYLE_LINES,   ///< Use lines for the grid
-    GRID_STYLE_DOTS     ///< Use dots for the grid
-};
-
 
 /**
  * @brief Class GAL is the abstract interface for drawing on a 2D-surface.
@@ -63,11 +55,11 @@ enum GRID_STYLE
  * for drawing purposes these are transformed to screen units with this layer. So zooming is handled here as well.
  *
  */
-class GAL
+class GAL: GAL_DISPLAY_OPTIONS_OBSERVER
 {
 public:
     // Constructor / Destructor
-    GAL();
+    GAL( GAL_DISPLAY_OPTIONS& aOptions );
     virtual ~GAL();
 
     /// @brief Returns the initalization status for the canvas.
@@ -975,6 +967,10 @@ public:
     static const double METRIC_UNIT_LENGTH;
 
 protected:
+
+    GAL_DISPLAY_OPTIONS&    options;
+    UTIL::LINK              observerLink;
+
     std::stack<double> depthStack;             ///< Stored depth values
     VECTOR2I           screenSize;             ///< Screen size in screen coordinates
 
@@ -1043,6 +1039,25 @@ protected:
     /// Depth level on which the grid is drawn
     static const int GRID_DEPTH;
 
+    // ---------------
+    // Settings observer interface
+    // ---------------
+    /**
+     * Handler for observer settings changes
+     */
+    void OnGalDisplayOptionsChanged( const GAL_DISPLAY_OPTIONS& aOptions ) override;
+
+    /**
+     * Function updatedGalDisplayOptions
+     *
+     * @brief handler for updated display options. Derived classes
+     * should call up to this to set base-class methods.
+     *
+     * @return true if the new settings changed something. Derived classes
+     * can use this information to refresh themselves
+     */
+    virtual bool updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions );
+
 private:
     struct TEXT_PROPERTIES
     {

include/gal/opengl/opengl_gal.h

@@ -62,7 +62,7 @@ class SHADER;
  * and quads. The purpose is to provide a fast graphics interface, that takes advantage of modern
  * graphics card GPUs. All methods here benefit thus from the hardware acceleration.
  */
-class OPENGL_GAL : public GAL, public wxGLCanvas, GAL_DISPLAY_OPTIONS_OBSERVER
+class OPENGL_GAL : public GAL, public wxGLCanvas
 {
 public:
     /**
@@ -99,8 +99,6 @@ public:
         return IsShownOnScreen();
     }
 
-    void OnGalDisplayOptionsChanged( const GAL_DISPLAY_OPTIONS& ) override;
-
     // ---------------
     // Drawing methods
     // ---------------
@@ -282,9 +280,6 @@ private:
     /// Super class definition
     typedef GAL super;
 
-    GAL_DISPLAY_OPTIONS&    options;
-    UTIL::LINK              observerLink;
-
     static const int    CIRCLE_POINTS   = 64;   ///< The number of points for circle approximation
     static const int    CURVE_POINTS    = 32;   ///< The number of points for curve approximation
 
@@ -322,6 +317,9 @@ private:
                                                         ///< when the window is visible
     bool                    isGrouping;                 ///< Was a group started?
 
+    ///< Update handler for OpenGL settings
+    bool updatedGalDisplayOptions( const GAL_DISPLAY_OPTIONS& aOptions ) override;
+
     // Polygon tesselation
     /// The tessellator
     GLUtesselator*          tesselator;