kicad/gerbview/gerbview_frame.h

/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2016 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2013 Wayne Stambaugh <stambaughw@gmail.com>
 * Copyright (C) 1992-2018 KiCad Developers, see AUTHORS.txt for contributors.
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/**
 * @file gerbview_frame.h
 */

#ifndef  WX_GERBER_STRUCT_H
#define  WX_GERBER_STRUCT_H


#include <pgm_base.h>
#include <config_params.h>
#include <draw_frame.h>
#include <layers_id_colors_and_visibility.h>
#include <gerbview.h>
#include <convert_to_biu.h>
#include <gbr_layout.h>
#include <gbr_screen.h>
#include <page_info.h>
#include <gbr_display_options.h>
#include <colors_design_settings.h>

extern COLORS_DESIGN_SETTINGS g_ColorsSettings;

#define NO_AVAILABLE_LAYERS UNDEFINED_LAYER

class DCODE_SELECTION_BOX;
class GERBER_LAYER_WIDGET;
class GBR_LAYER_BOX_SELECTOR;
class GERBER_DRAW_ITEM;
class GERBER_FILE_IMAGE;
class GERBER_FILE_IMAGE_LIST;
class REPORTER;


/**
 * Class GERBVIEW_FRAME
 * is the main window used in GerbView.
 */

#define GERBVIEW_FRAME_NAME wxT( "GerberFrame" )

class GERBVIEW_FRAME : public EDA_DRAW_FRAME    // PCB_BASE_FRAME
{
    GBR_LAYOUT*     m_gerberLayout;
    wxPoint         m_grid_origin;
    PAGE_INFO       m_paper;            // used only to show paper limits to screen

public:
    GBR_DISPLAY_OPTIONS m_DisplayOptions;

    /**
     * Function SetLayout
     * sets the m_gerberLayout member in such as way as to ensure deleting any previous
     * GBR_LAYOUT.
     * @param aLayout The GBR_LAYOUT to put into the frame.
     */
    void SetLayout( GBR_LAYOUT* aLayout )
    {
        delete m_gerberLayout;
        m_gerberLayout = aLayout;
    }

    GBR_LAYOUT* GetGerberLayout() const
    {
        wxASSERT( m_gerberLayout );
        return m_gerberLayout;
    }

    /**
     * Accessors to GERBER_FILE_IMAGE_LIST and GERBER_FILE_IMAGE data
     */
    GERBER_FILE_IMAGE_LIST* GetImagesList() const
    {
        return m_gerberLayout->GetImagesList();
    }

    GERBER_FILE_IMAGE* GetGbrImage( int aIdx ) const;

    unsigned ImagesMaxCount() const;    ///< The max number of file images


    /**
     * Function GetGerberLayoutBoundingBox
     * calculates the bounding box containing all gerber items.
     * @return EDA_RECT - the items bounding box
     */
    EDA_RECT GetGerberLayoutBoundingBox();

    void SetPageSettings( const PAGE_INFO& aPageSettings ) override;
    const PAGE_INFO& GetPageSettings() const override;
    const wxSize GetPageSizeIU() const override;

    const wxPoint& GetAuxOrigin() const override;
    void SetAuxOrigin( const wxPoint& aPoint ) override;

    const wxPoint& GetGridOrigin() const override { return m_grid_origin; }
    void SetGridOrigin( const wxPoint& aPoint ) override
    {
        m_grid_origin = aPoint;
    }

    const TITLE_BLOCK&  GetTitleBlock() const override;
    void SetTitleBlock( const TITLE_BLOCK& aTitleBlock ) override;

    /**
     * Function SetCurItem
     * sets the currently selected item and displays it in the MsgPanel.
     * If the given item is NULL then the MsgPanel is erased and there is no
     * currently selected item. This function is intended to make the process
     * of "selecting" an item more formal, and to indivisibly tie the operation
     * of selecting an item to displaying it using GERBER_DRAW_ITEM::Display_Infos().
     * @param aItem The GERBER_DRAW_ITEM to make the selected item or NULL if none.
     * @param aDisplayInfo = true to display item info, false if not (default = true)
     */
    void SetCurItem( GERBER_DRAW_ITEM* aItem, bool aDisplayInfo = true );

    /** Install the dialog box for layer selection
     * @param aDefaultLayer = Preselection (NB_PCB_LAYERS for "(Deselect)" layer)
     * @param aCopperLayerCount = number of copper layers
     * @param aShowDeselectOption = display a "(Deselect)" radiobutton (when set to true)
     * @return new layer value (NB_PCB_LAYERS when "(Deselect)" radiobutton selected),
     *                         or -1 if canceled
     *
     * Providing the option to also display a "(Deselect)" radiobutton makes the
     *  GerbView's "Export to Pcbnew" command) more "user friendly",
     * by permitting any layer to be "deselected" immediately after its
     * corresponding radiobutton has been clicked on. (It would otherwise be
     * necessary to first cancel the "Select Layer:" dialog box (invoked after a
     * different radiobutton is clicked on) prior to then clicking on the "Deselect"
     * button provided within the "Layer selection:" dialog box).
     */
    int SelectPCBLayer( int aDefaultLayer, int aOpperLayerCount, bool aNullLayer = false );

    ///> @copydoc EDA_DRAW_FRAME::SetGridColor()
    virtual void SetGridColor( COLOR4D aColor ) override;

protected:
    GERBER_LAYER_WIDGET*    m_LayersManager;

    // Auxiliary file history used to store zip files history.
    FILE_HISTORY            m_zipFileHistory;

    // Auxiliary file history used to store drill files history.
    FILE_HISTORY            m_drillFileHistory;

    // Auxiliary file history used to store job files history.
    FILE_HISTORY            m_jobFileHistory;

    /// The last filename chosen to be proposed to the user
    wxString                m_lastFileName;

public:
    wxChoice* m_SelComponentBox;                // a choice box to display and highlight component graphic items
    wxChoice* m_SelNetnameBox;                  // a choice box to display and highlight netlist graphic items
    wxChoice* m_SelAperAttributesBox;           // a choice box to display aperture attributes and highlight items
    GBR_LAYER_BOX_SELECTOR* m_SelLayerBox;      // The combobox to select the current active graphic layer
                                                // (which is drawn on top on the other layers
    DCODE_SELECTION_BOX*    m_DCodeSelector;    // a list box to select the dcode Id to highlight.
    wxTextCtrl*             m_TextInfo;         // a wxTextCtrl used to display some info about
                                                // gerber data (format..)

    COLORS_DESIGN_SETTINGS* m_colorsSettings;

private:
    // list of PARAM_CFG_xxx to read/write parameters saved in config
    PARAM_CFG_ARRAY         m_configSettings;

    int m_displayMode;                  // Gerber images ("layers" in Gerbview) can be drawn:
                                        // - in fast mode (write mode) but if there are negative
                                        // items only the last image is correctly drawn (no
                                        // problem to see only one image or when no negative items)
                                        // - in "exact" mode (but slower) in write mode:
                                        // last image covers previous images
                                        // - in "exact" mode (also slower) in OR mode
                                        // (transparency mode)
                                        // m_displayMode = 0, 1 or 2

    bool            m_show_layer_manager_tools;

    void            updateComponentListSelectBox();
    void            updateNetnameListSelectBox();
    void            updateAperAttributesSelectBox();
    void            updateDCodeSelectBox();
    void            updateGridSelectBox();
    void            updateZoomSelectBox();
    void            unitsChangeRefresh() override;      // See class EDA_DRAW_FRAME

    // The Tool Framework initalization
    void setupTools();

    /// Updates the GAL with display settings changes
    void applyDisplaySettingsToGAL();

    /**
     * Loads a list of Gerber and NC drill files and updates the view based on them
     * @param aPath is the base path for the filenames if they are relative
     * @param aFilenameList is a list of filenames to load
     * @param aFileType is a list of type of files to load (0 = Gerber, 1 = NC drill)
     * if nullptr, files are expected Gerber type.
     * @return true if every file loaded successfully
     */
    bool loadListOfGerberAndDrillFiles( const wxString& aPath,
                                        const wxArrayString& aFilenameList,
                                        const std::vector<int>* aFileType = nullptr );

public:
    GERBVIEW_FRAME( KIWAY* aKiway, wxWindow* aParent );
    ~GERBVIEW_FRAME();

    void OnCloseWindow( wxCloseEvent& Event );

    bool OpenProjectFiles( const std::vector<wxString>& aFileSet, int aCtl ) override;

    // Virtual basic functions:
    void RedrawActiveWindow( wxDC* DC, bool EraseBg ) override;
    void ReCreateHToolbar() override;
    void ReCreateAuxiliaryToolbar() override;

    /**
     * Function ReCreateVToolbar
     * creates or updates the right vertical toolbar.
     *
     * @note This is currently not used.
     */
    void ReCreateVToolbar() override;

    /**
     * Create or update the left vertical toolbar (option toolbar
     */
    void ReCreateOptToolbar();

    void ReCreateMenuBar() override;
    void OnLeftClick( wxDC* aDC, const wxPoint& aMousePos ) override;
    void OnLeftDClick( wxDC* aDC, const wxPoint& aMousePos ) override;
    bool OnRightClick( const wxPoint& aMousePos, wxMenu* aPopMenu ) override;
    void OnUpdateSelectTool( wxUpdateUIEvent& aEvent );
    void OnUpdateSelectZoom( wxUpdateUIEvent& aEvent );
    double BestZoom() override;
    void UpdateStatusBar() override;

    /**
     * Function GetZoomLevelIndicator
     * returns a human readable value which can be displayed as zoom
     * level indicator in dialogs.
     * Virtual from the base class
     */
    const wxString GetZoomLevelIndicator() const override;

    /**
     * Function GetDisplayMode
     *  @return 0 for fast mode (not fully compatible with negative objects)
     *          1 for exact mode, write mode
     *          2 for exact mode, OR mode (transparency mode)
     */
    int GetDisplayMode() { return m_displayMode; }

    /**
     * Function SetDisplayMode
     *  @param aMode =  0 for fast mode
     *                  1 for exact mode, write mode
     *                  2 for exact mode, OR mode (transparency mode)
     */
    void SetDisplayMode( int aMode ) { m_displayMode = aMode; }

    /**
     * Function IsElementVisible
     * tests whether a given element category is visible. Keep this as an
     * inline function.
     * @param aLayerID is an item id from the enum GERBVIEW_LAYER_ID
     * @return bool - true if the element is visible.
     */
    bool IsElementVisible( int aLayerID ) const;

    /**
     * Function SetElementVisibility
     * changes the visibility of an element category
     * @param aItemIdVisible is an item id from the enum GERBVIEW_LAYER_ID
     * @param aNewState = The new visibility state of the element category
     *  (see enum PCB)
     */
    void SetElementVisibility( int aLayerID, bool aNewState );

    /**
     * Function SetGridVisibility(), virtual from EDA_DRAW_FRAME
     * It may be overloaded by derived classes
     * @param aVisible = true if the grid must be shown
     */
    void SetGridVisibility( bool aVisible ) override;

    /**
     * Function GetVisibleLayers
     * is a proxy function that calls the correspondent function in m_BoardSettings
     * Returns a bit-mask of all the layers that are visible
     * @return long - the visible layers in bit-mapped form.
     */
    long GetVisibleLayers() const;

    /**
     * Function SetVisibleLayers
     * is a proxy function that calls the correspondent function in m_BoardSettings
     * changes the bit-mask of visible layers
     * @param aLayerMask = The new bit-mask of visible layers
     */
    void SetVisibleLayers( long aLayerMask );

    /**
     * Function IsLayerVisible
     * tests whether a given layer is visible
     * @param aLayer = The layer to be tested (still 0-31!)
     * @return bool - true if the layer is visible.
     */
    bool IsLayerVisible( int aLayer ) const;

    /**
     * Function GetVisibleElementColor
     * returns the color of a gerber visible element.
     */
    COLOR4D GetVisibleElementColor( int aLayerID );

    void SetVisibleElementColor( int aLayerID, COLOR4D aColor );

    /**
     * Function GetLayerColor
     * gets a layer color for any valid layer.
     */
    COLOR4D GetLayerColor( int aLayer ) const;

    /**
     * Function SetLayerColor
     * changes a layer color for any valid layer.
     */
    void SetLayerColor( int aLayer, COLOR4D aColor );

    /**
     * Function GetNegativeItemsColor
     * @return the color of negative items.
     * This is usually the background color, but can be another color
     * in order to see negative objects
     */
    COLOR4D GetNegativeItemsColor();

    /**
     * Function ReFillLayerWidget
     * changes out all the layers in m_Layers and may be called upon
     * loading new gerber files.
     */
    void ReFillLayerWidget();

    /**
     * Function SetActiveLayer
     * will change the currently active layer to \a aLayer and also
     * update the GERBER_LAYER_WIDGET.
     */
    void SetActiveLayer( int aLayer, bool doLayerWidgetUpdate = true );

    /**
     * Function SetActiveLayer
     * returns the active layer
     */
    int GetActiveLayer();

    /**
     * Function getNextAvailableLayer
     * finds the next empty layer starting at \a aLayer and returns it to the caller.  If no
     * empty layers are found, NO_AVAILABLE_LAYERS is return.
     * @param aLayer The first layer to search.
     * @return The first empty layer found or NO_AVAILABLE_LAYERS.
     */
    int getNextAvailableLayer( int aLayer = 0 ) const;

    bool hasAvailableLayers() const
    {
        return getNextAvailableLayer() != NO_AVAILABLE_LAYERS;
    }

    /**
     * Function syncLayerWidget
     * updates the currently "selected" layer within the GERBER_LAYER_WIDGET.
     * The currently active layer is defined by the return value of GetActiveLayer().
     * <p>
     * This function cannot be inline without including layer_widget.h in
     * here and we do not want to do that.
     */
    void syncLayerWidget();

    /**
     * Function syncLayerBox
     * updates the currently "selected" layer within m_SelLayerBox
     * The currently active layer, as defined by the return value of
     * GetActiveLayer().
     * @param aRebuildLayerBox = true to rebuild the layer box
     *  false to just updates the selection.
     */
    void syncLayerBox( bool aRebuildLayerBox = false );

    /**
     * Function UpdateTitleAndInfo
     * displays the short filename (if exists) of the selected layer
     * on the caption of the main GerbView window
     * and some other parameters
     *    Name of the layer (found in the gerber file: LN &ltname&gt command) in the status bar
     *    Name of the Image (found in the gerber file: IN &ltname&gt command) in the status bar
     *    and other data in toolbar
     */
    void UpdateTitleAndInfo();

    /**
     * Function GetConfigurationSettings
     * Populates the GerbView applications settings list.
     * (list of parameters that must be saved in GerbView parameters)
     * Currently, only the settings that are needed at start up by the main window are
     * defined here.  There are other locally used settings scattered throughout the
     * GerbView source code (mainly in dialogs).  If you need to define a configuration
     * setting that need to be loaded at run time, this is the place to define it.
     */
    PARAM_CFG_ARRAY& GetConfigurationSettings( void );

    void LoadSettings( wxConfigBase* aCfg ) override;

    void SaveSettings( wxConfigBase* aCfg ) override;

    void OnToggleCoordType( wxCommandEvent& aEvent );
    void OnToggleFlashItemDrawMode( wxCommandEvent& aEvent );
    void OnToggleLineDrawMode( wxCommandEvent& aEvent );
    void OnTogglePolygonDrawMode( wxCommandEvent& aEvent );
    void OnToggleShowLayerManager( wxCommandEvent& aEvent );

    void ShowChangedLanguage() override;

    void Process_Special_Functions( wxCommandEvent& event );
    void OnSelectOptionToolbar( wxCommandEvent& event );

    /// Handles the changing of the highlighted component/net/attribute
    void OnSelectHighlightChoice( wxCommandEvent& event );

    /**
     * Function OnSelectActiveDCode
     * Selects the active DCode for the current active layer.
     * Items using this DCode are highlighted.
     */
    void OnSelectActiveDCode( wxCommandEvent& event );

    /**
     * Function OnSelectActiveLayer
     * Selects the active layer:
     *  - if a file is loaded, it is loaded in this layer
     *  _ this layer is displayed on top of other layers
     */
    void OnSelectActiveLayer( wxCommandEvent& event );

    /**
     * Function OnShowGerberSourceFile
     * Call the preferred editor to show (and edit) the gerber source file
     * loaded in the active layer
     */
    void OnShowGerberSourceFile( wxCommandEvent& event );

    /**
     * Function OnSelectDisplayMode
     * called on a display mode selection
     * Mode selection can be fast display,
     * or exact mode with stacked images or with transparency
     */
    void OnSelectDisplayMode( wxCommandEvent& event );

    /**
     * Function OnQuit
     * called on request of application quit
     */
    void OnQuit( wxCommandEvent& event );

    ///> @copydoc EDA_DRAW_FRAME::GetHotKeyDescription()
    EDA_HOTKEY* GetHotKeyDescription( int aCommand ) const override;

    /**
     * Function OnHotKey.
     *  ** Commands are case insensitive **
     *  Some commands are relatives to the item under the mouse cursor
     * @param aDC = current device context
     * @param aHotkeyCode = hotkey code (ascii or wxWidget code for special keys)
     * @param aPosition The cursor position in logical (drawing) units.
     * @param aItem = NULL or pointer on a EDA_ITEM under the mouse cursor
     */
    bool OnHotKey( wxDC* aDC, int aHotkeyCode, const wxPoint& aPosition, EDA_ITEM* aItem = NULL ) override;

    GERBER_DRAW_ITEM* Locate( const wxPoint& aPosition, int typeloc );

    void Process_Config( wxCommandEvent& event );

    void OnUpdateDrawMode( wxUpdateUIEvent& aEvent );
    void OnUpdateCoordType( wxUpdateUIEvent& aEvent );
    void OnUpdateFlashedItemsDrawMode( wxUpdateUIEvent& aEvent );
    void OnUpdateLineDrawMode( wxUpdateUIEvent& aEvent );
    void OnUpdatePolygonDrawMode( wxUpdateUIEvent& aEvent );
    void OnUpdateShowDCodes( wxUpdateUIEvent& aEvent );
    void OnUpdateShowNegativeItems( wxUpdateUIEvent& aEvent );
    void OnUpdateShowLayerManager( wxUpdateUIEvent& aEvent );
    void OnUpdateSelectDCode( wxUpdateUIEvent& aEvent );
    void OnUpdateLayerSelectBox( wxUpdateUIEvent& aEvent );
    void OnUpdateDiffMode( wxUpdateUIEvent& aEvent );
    void OnUpdateHighContrastMode( wxUpdateUIEvent& aEvent );

    /**
     * Function BlockCommand
     * returns the block command (BLOCK_MOVE, BLOCK_COPY...) corresponding to
     * the \a aKey (ALT, SHIFT ALT ..)
     */
    virtual int BlockCommand( EDA_KEY key ) override;

    /**
     * Function HandleBlockPlace
     * handles the block place command.
     */
    virtual void HandleBlockPlace( wxDC* DC ) override;

    /**
     * Function HandleBlockEnd
     * handles the end of a block command,
     * It is called at the end of the definition of the area of a block.
     * Depending on the current block command, this command is executed
     * or parameters are initialized to prepare a call to HandleBlockPlace
     * in GetScreen()->m_BlockLocate
     *
     * @return false if no item selected, or command finished,
     *         true if some items found and HandleBlockPlace must be called later.
     */
    virtual bool HandleBlockEnd( wxDC* DC ) override;

    /**
     * Function Block_Move
     * moves all tracks and segments within the selected block.
     * New location is determined by the current offset from the selected
     * block's original location.
     */
    void Block_Move();

    /**
     * Function ToPrinter
     * Open a dialog frame to print layers
     */
    void ToPrinter( wxCommandEvent& event );

    void Files_io( wxCommandEvent& event );

    /**
     * Function OnGbrFileHistory
     * deletes the current data and loads a Gerber file selected from history list on
     * current layer.
     */
    void OnGbrFileHistory( wxCommandEvent& event );

    /**
     * Function OnDrlFileHistory
     * deletes the current data and load a drill file in Excellon format selected from
     * history list on current layer.
     */
    void OnDrlFileHistory( wxCommandEvent& event );

    /**
     * Function OnZipFileHistory
     * deletes the current data and load a zip archive file selected from the
     * history list. The archive is expected coantaining a set of gerber and drill file
     */
    void OnZipFileHistory( wxCommandEvent& event );

    /**
     * deletes the current data and load a gerber job file selected from the
     * history list.
     */
    void OnJobFileHistory( wxCommandEvent& event );

    /**
     * Extracts gerber and drill files from the zip archive, and load them
     * @param aFullFileName is the full filename of the zip archive
     * @param aReporter a REPORTER to collect warning and error messages
     * @return true if OK, false if a file cannot be readable
     */
    bool unarchiveFiles( const wxString& aFullFileName, REPORTER* aReporter = nullptr );

    /**
     * function LoadGerberFiles
     * Load a photoplot (Gerber) file or many files.
     * @param aFileName - void string or file name with full path to open or empty string to
     *                    open a new file. In this case one one file is loaded
     *                    if void string: user will be prompted for filename(s)
     * @return true if file was opened successfully.
     */
    bool LoadGerberFiles( const wxString& aFileName );
    bool Read_GERBER_File( const wxString&   GERBER_FullFileName );

    /**
     * function LoadExcellonFiles
     * Load a drill (EXCELLON) file or many files.
     * @param aFileName - void string or file name with full path to open or empty string to
     *                    open a new file. In this case one one file is loaded
     *                    if empty string: user will be prompted for filename(s)
     * @return true if file was opened successfully.
     */
    bool LoadExcellonFiles( const wxString& aFileName );
    bool Read_EXCELLON_File( const wxString& aFullFileName );

    /**
     * function LoadZipArchiveFileLoadZipArchiveFile
     * Load a zipped archive file.
     * @param aFileName - void string or file name with full path to open or empty string to
     *                    open a new file.
     *                    if empty string: user will be prompted for filename(s)
     * @return true if file was opened successfully.
     */
    bool LoadZipArchiveFile( const wxString& aFileName );


    /**
     * Load a Gerber job file, and load gerber files found in job files.
     * @param aFileName - void string or file name with full path to open or empty string to
     *                    open a new file.
     *                    if empty string: user will be prompted for filename(s)
     * @return true if file(s) was opened successfully.
     */
    bool LoadGerberJobFile( const wxString& aFileName );


    bool GeneralControl( wxDC* aDC, const wxPoint& aPosition, EDA_KEY aHotKey = 0 ) override;

    /**
     * Set Size Items (Lines, Flashes) from DCodes List
     */
    void Liste_D_Codes();

    // PCB handling
    bool Clear_DrawLayers( bool query );
    void Erase_Current_DrawLayer( bool query );

    void SortLayersByX2Attributes();

    /**
     * Updates the display options and refreshes the view as needed
     * @param aOptions is the new options to apply
     */
    void UpdateDisplayOptions( const GBR_DISPLAY_OPTIONS& aOptions );

    // Conversion function
    void ExportDataInPcbnewFormat( wxCommandEvent& event );

    /* SaveCopyInUndoList() virtual
     * currently: do nothing in GerbView.
     */
    void SaveCopyInUndoList( GERBER_DRAW_ITEM* aItemToCopy,
                             UNDO_REDO_T aTypeCommand = UR_UNSPECIFIED,
                             const wxPoint& aTransformPoint = wxPoint( 0, 0 ) ) { }

    /**
     * Function SaveCopyInUndoList (overloaded).
     * Creates a new entry in undo list of commands.
     * add a list of pickers to handle a list of items
     * @param aItemsList = the list of items modified by the command to undo
     * @param aTypeCommand = command type (see enum UNDO_REDO_T)
     * @param aTransformPoint = the reference point of the transformation,
     *                          for commands like move
     */
    void SaveCopyInUndoList( const PICKED_ITEMS_LIST& aItemsList,
                             UNDO_REDO_T aTypeCommand,
                             const wxPoint& aTransformPoint = wxPoint( 0, 0 ) )
    {
        // currently: do nothing in GerbView.
    }

    ///> @copydoc EDA_DRAW_FRAME::UseGalCanvas
    virtual void UseGalCanvas( bool aEnable ) override;

    /**
     * switches currently used canvas (default / Cairo / OpenGL).
     */
    void OnSwitchCanvas( wxCommandEvent& aEvent );

    /**
     * Update UI called when switches currently used canvas (default / Cairo / OpenGL).
     */
    void OnUpdateSwitchCanvas( wxUpdateUIEvent& aEvent );

    /**
     * Allows Gerbview to install its preferences panels into the preferences dialog.
     */
    void InstallPreferences( PAGED_DIALOG* aParent ) override;

    /**
     * Called after the preferences dialog is run.
     */
    void CommonSettingsChanged() override;

    DECLARE_EVENT_TABLE()
};

#endif /* WX_GERBER_STRUCT_H */