#ifndef EDA_DRAW_FRAME_H_ #define EDA_DRAW_FRAME_H_ /* * This program source code file is part of KiCad, a free EDA CAD application. * * Copyright (C) 2009 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com * Copyright (C) 2011 Wayne Stambaugh * Copyright (C) 1992-2011 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 2 * 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, you may find one here: * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html * or you may search the http://www.gnu.org website for the version 2 license, * or you may write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */ #include #include class wxSingleInstanceChecker; class EDA_HOTKEY; /** * Class EDA_DRAW_FRAME * is the base class for create windows for drawing purpose. The Eeschema, Pcbnew and * GerbView main windows are just a few examples of classes derived from EDA_DRAW_FRAME. */ class EDA_DRAW_FRAME : public KIWAY_PLAYER { /// Let the #EDA_DRAW_PANEL object have access to the protected data since /// it is closely tied to the #EDA_DRAW_FRAME. friend class EDA_DRAW_PANEL; ///< Id of active button on the vertical toolbar. int m_toolId; BASE_SCREEN* m_currentScreen; ///< current used SCREEN bool m_snapToGrid; ///< Indicates if cursor should be snapped to grid. bool m_galCanvasActive; ///< whether to use new GAL engine EDA_DRAW_PANEL_GAL* m_galCanvas; protected: wxSingleInstanceChecker* m_file_checker; ///< prevents opening same file multiple times. EDA_HOTKEY_CONFIG* m_hotkeysDescrList; int m_LastGridSizeId; // the command id offset (>= 0) of the last selected grid // 0 is for the grid corresponding to // a wxCommand ID = ID_POPUP_GRID_LEVEL_1000. bool m_drawGrid; // hide/Show grid bool m_showPageLimits; ///< true to display the page limits EDA_COLOR_T m_gridColor; // Grid color EDA_COLOR_T m_drawBgColor; ///< the background color of the draw canvas ///< BLACK for Pcbnew, BLACK or WHITE for eeschema double m_zoomLevelCoeff; ///< a suitable value to convert the internal zoom scaling factor // to a zoom level value which rougly gives 1.0 when the board/schematic // is at scale = 1 /// The area to draw on. EDA_DRAW_PANEL* m_canvas; TOOL_MANAGER* m_toolManager; TOOL_DISPATCHER* m_toolDispatcher; /// Tool ID of previously active draw tool bar button. int m_lastDrawToolId; /// The shape of the KiCad cursor. The default value (0) is the normal cross /// hair cursor. Set to non-zero value to draw the full screen cursor. /// @note This is not the system mouse cursor. int m_cursorShape; /// True shows the X and Y axis indicators. bool m_showAxis; /// True shows the grid axis indicators. bool m_showGridAxis; /// True shows the origin axis used to indicate the coordinate offset for /// drill, gerber, and component position files. bool m_showOriginAxis; /// True shows the drawing border and title block. bool m_showBorderAndTitleBlock; /// Choice box to choose the grid size. wxComboBox* m_gridSelectBox; /// Choice box to choose the zoom value. wxComboBox* m_zoomSelectBox; /// The tool bar that contains the buttons for quick access to the application draw /// tools. It typically is located on the right side of the main window. wxAuiToolBar* m_drawToolBar; /// The options tool bar typcially located on the left edge of the main window. wxAuiToolBar* m_optionsToolBar; /// Panel used to display information at the bottom of the main window. EDA_MSG_PANEL* m_messagePanel; int m_MsgFrameHeight; #ifdef USE_WX_OVERLAY // MAC Uses overlay to workaround the wxINVERT and wxXOR miss wxOverlay m_overlay; #endif /// One-shot to avoid a recursive mouse event during hotkey movement bool m_movingCursorWithKeyboard; void SetScreen( BASE_SCREEN* aScreen ) { m_currentScreen = aScreen; } /** * Function unitsChangeRefresh * is called when when the units setting has changed to allow for any derived classes * to handle refreshing and controls that have units based measurements in them. The * default version only updates the status bar. Don't forget to call the default * in your derived class or the status bar will not get updated properly. */ virtual void unitsChangeRefresh(); /** * Function GeneralControlKeyMovement * Handle the common part of GeneralControl dedicated to global * cursor keys (i.e. cursor movement by keyboard) */ void GeneralControlKeyMovement( int aHotKey, wxPoint *aPos, bool aSnapToGrid ); /* Function RefreshCrosshair * Move and refresh the crosshair after movement; also call the * mouse capture function, if active. */ void RefreshCrossHair( const wxPoint &aOldPos, const wxPoint &aEvtPos, wxDC* aDC ); public: EDA_DRAW_FRAME( KIWAY* aKiway, wxWindow* aParent, FRAME_T aFrameType, const wxString& aTitle, const wxPoint& aPos, const wxSize& aSize, long aStyle, const wxString& aFrameName ); ~EDA_DRAW_FRAME(); /** * Function LockFile * marks a schematic file as being in use. Use ReleaseFile() to undo this. * @param aFileName = full path to the file. * @return false if the file was already locked, true otherwise. */ bool LockFile( const wxString& aFileName ); /** * Function ReleaseFile * Release the current file marked in use. See m_file_checker. */ void ReleaseFile(); virtual void SetPageSettings( const PAGE_INFO& aPageSettings ) = 0; virtual const PAGE_INFO& GetPageSettings() const = 0; /** * Function GetPageSizeIU * works off of GetPageSettings() to return the size of the paper page in * the internal units of this particular view. */ virtual const wxSize GetPageSizeIU() const = 0; /** * Function GetAuxOrigin * returns the origin of the axis used for plotting and various exports. */ virtual const wxPoint& GetAuxOrigin() const = 0; virtual void SetAuxOrigin( const wxPoint& aPosition ) = 0; /** * Function GetGridOrigin * returns the absolute coordinates of the origin of the snap grid. This is * treated as a relative offset, and snapping will occur at multiples of the grid * size relative to this point. */ virtual const wxPoint& GetGridOrigin() const = 0; virtual void SetGridOrigin( const wxPoint& aPosition ) = 0; //----------------------------------------------- /** * Function GetCrossHairPosition * return the current cross hair position in logical (drawing) coordinates. * @param aInvertY Inverts the Y axis position. * @return The cross hair position in drawing coordinates. */ wxPoint GetCrossHairPosition( bool aInvertY = false ) const; /** * Function SetCrossHairPosition * sets the screen cross hair position to \a aPosition in logical (drawing) units. * @param aPosition The new cross hair position. * @param aSnapToGrid Sets the cross hair position to the nearest grid position to * \a aPosition. * */ void SetCrossHairPosition( const wxPoint& aPosition, bool aSnapToGrid = true ); /** * Function GetCursorPosition * returns the current cursor position in logical (drawing) units. * @param aOnGrid Returns the nearest grid position at the current cursor position. * @param aGridSize Custom grid size instead of the current grid size. Only valid * if \a aOnGrid is true. * @return The current cursor position. */ wxPoint GetCursorPosition( bool aOnGrid, wxRealPoint* aGridSize = NULL ) const; /** * Function GetNearestGridPosition * returns the nearest \a aGridSize location to \a aPosition. * @param aPosition The position to check. * @param aGridSize The grid size to locate to if provided. If NULL then the current * grid size is used. * @return The nearst grid position. */ wxPoint GetNearestGridPosition( const wxPoint& aPosition, wxRealPoint* aGridSize = NULL ) const; /** * Function GetCursorScreenPosition * returns the cross hair position in device (display) units.b * @return The current cross hair position. */ wxPoint GetCrossHairScreenPosition() const; void SetMousePosition( const wxPoint& aPosition ); /** * Function RefPos * Return the reference position, coming from either the mouse position * or the cursor position. * * @param useMouse If true, return mouse position, else cursor's. * * @return wxPoint - The reference point, either the mouse position or * the cursor position. */ wxPoint RefPos( bool useMouse ) const; const wxPoint& GetScrollCenterPosition() const; void SetScrollCenterPosition( const wxPoint& aPoint ); //---------------------------------------------- virtual const TITLE_BLOCK& GetTitleBlock() const = 0; virtual void SetTitleBlock( const TITLE_BLOCK& aTitleBlock ) = 0; // the background color of the draw canvas: // Virtual because some frames can have a specific way to get/set the bg color /** * @return the EDA_COLOR_T for the canvas background */ virtual EDA_COLOR_T GetDrawBgColor() const { return m_drawBgColor; } /** * @param aColor: the EDA_COLOR_T for the canvas background */ virtual void SetDrawBgColor( EDA_COLOR_T aColor) { m_drawBgColor= aColor ; } int GetCursorShape() const { return m_cursorShape; } void SetCursorShape( int aCursorShape ) { m_cursorShape = aCursorShape; } bool GetShowBorderAndTitleBlock() const { return m_showBorderAndTitleBlock; } void SetShowBorderAndTitleBlock( bool aShow ) { m_showBorderAndTitleBlock = aShow; } bool ShowPageLimits() const { return m_showPageLimits; } void SetShowPageLimits( bool aShow ) { m_showPageLimits = aShow; } EDA_DRAW_PANEL* GetCanvas() { return m_canvas; } virtual wxString GetScreenDesc() const; /** * Function GetScreen * returns a pointer to a BASE_SCREEN or one of its * derivatives. It is overloaded by derived classes to return * SCH_SCREEN or PCB_SCREEN. */ virtual BASE_SCREEN* GetScreen() const { return m_currentScreen; } /** * Execute a remote command send via a socket to the application, * port KICAD_PCB_PORT_SERVICE_NUMBER (currently 4242) * It called by EDA_DRAW_FRAME::OnSockRequest(). * this is a virtual function becuse the actual commands depends on the * application. * the basic function do nothing * @param cmdline = received command from socket */ virtual void ExecuteRemoteCommand( const char* cmdline ){} void OnMenuOpen( wxMenuEvent& event ); void OnMouseEvent( wxMouseEvent& event ); /** * function SkipNextLeftButtonReleaseEvent * after calling this function, if the left mouse button * is down, the next left mouse button release event will be ignored. * It is is usefull for instance when closing a dialog on a mouse click, * to skip the next mouse left button release event * by the parent window, because the mouse button * clicked on the dialog is often released in the parent frame, * and therefore creates a left button released mouse event * which can be unwanted in some cases */ void SkipNextLeftButtonReleaseEvent(); ///> @copydoc EDA_BASE_FRAME::WriteHotkeyConfig int WriteHotkeyConfig( struct EDA_HOTKEY_CONFIG* aDescList, wxString* aFullFileName = NULL ); /** * Function GetHotKeyDescription * Searches lists of hot key identifiers (HK_xxx) used in the frame to find a matching * hot key descriptor. * @param aCommand is the hot key identifier. * @return Hot key descriptor or NULL if none found. */ virtual EDA_HOTKEY* GetHotKeyDescription( int aCommand ) const = 0; virtual bool OnHotKey( wxDC* aDC, int aHotKey, const wxPoint& aPosition, EDA_ITEM* aItem = NULL ); /** * Function AddMenuZoomAndGrid (virtual) * Add standard zoom commands and submenu zoom and grid selection to a popup menu * uses zoom hotkeys info base to add hotkeys info to menu commands * @param aMasterMenu = the menu to populate. */ virtual void AddMenuZoomAndGrid( wxMenu* aMasterMenu ); /** * Function GetZoomLevelIndicator * returns a human readable value which can be displayed as zoom * level indicator in dialogs. * this can be a percentage or other indicator. * it is virtual because it could be different for pcbnew, gerbview or eeschema * (different internal units and different purposes) * note also adjust m_zoomLevelCoeff is the way to adjust the displayed value */ virtual const wxString GetZoomLevelIndicator() const; /** * Function GetZoomLevelCoeff * returns the coefficient to convert internal display scale factor to zoom level. */ inline double GetZoomLevelCoeff() const { return m_zoomLevelCoeff; } void EraseMsgBox(); void Process_PageSettings( wxCommandEvent& event ); virtual void ReCreateHToolbar() = 0; virtual void ReCreateVToolbar() = 0; virtual void ReCreateMenuBar(); virtual void ReCreateAuxiliaryToolbar(); /** * Function SetToolID * sets the tool command ID to \a aId and sets the cursor to \a aCursor. The * command ID must be greater or equal ::ID_NO_TOOL_SELECTED. If the command * ID is less than ::ID_NO_TOOL_SELECTED, the tool command ID is set to * ::ID_NO_TOOL_SELECTED. On debug builds, an assertion will be raised when * \a aId is invalid. * @param aId New tool command ID if greater than or equal to ::ID_NO_TOOL_SELECTED. If less than zero, the current tool command ID is retained. * @param aCursor Sets the cursor shape if greater than or equal to zero. * @param aToolMsg The tool message to set in the status bar. */ virtual void SetToolID( int aId, int aCursor, const wxString& aToolMsg ); int GetToolId() const { return m_toolId; } /* These 4 functions provide a basic way to show/hide grid * and /get/set grid color. * These parameters are saved in KiCad config for each main frame */ /** * Function IsGridVisible() , virtual * @return true if the grid must be shown */ virtual bool IsGridVisible() const { return m_drawGrid; } /** * Function SetGridVisibility() , virtual * It may be overloaded by derived classes * @param aVisible = true if the grid must be shown */ virtual void SetGridVisibility( bool aVisible ) { m_drawGrid = aVisible; } /** * Function GetGridColor() , virtual * @return the color of the grid */ virtual EDA_COLOR_T GetGridColor() const { return m_gridColor; } /** * Function SetGridColor() , virtual * @param aColor = the new color of the grid */ virtual void SetGridColor( EDA_COLOR_T aColor ) { m_gridColor = aColor; } /** * Function GetGridPosition * returns the nearest grid position to \a aPosition if a screen is defined and snap to * grid is enabled. Otherwise, the original positions is returned. * @see m_snapToGrid and m_BaseScreen members. * @param aPosition The position to test. * @return The wxPoint of the appropriate cursor position. */ wxPoint GetGridPosition( const wxPoint& aPosition ) const; /** * Function SetNextGrid() * changes the grid size settings to the next one available. */ virtual void SetNextGrid(); /** * Function SetPrevGrid() * changes the grid size settings to the previous one available. */ virtual void SetPrevGrid(); /** * Function SetPresetGrid() * changes the grid size to one of the preset values. * @param aIndex is the index from the list. */ void SetPresetGrid( int aIndex ); /** * Command event handler for selecting grid sizes. * * All commands that set the grid size should eventually end up here. * This is where the application setting is saved. If you override * this method, make sure you call down to the base class. * * @param event - Command event passed by selecting grid size from the * grid size combobox on the toolbar. */ virtual void OnSelectGrid( wxCommandEvent& event ); /** * Functions OnSelectZoom * sets the zoom factor when selected by the zoom list box in the main tool bar. * @note List position 0 is fit to page * List position >= 1 = zoom (1 to zoom max) * Last list position is custom zoom not in zoom list. */ virtual void OnSelectZoom( wxCommandEvent& event ); // Command event handlers shared by all applications derived from EDA_DRAW_FRAME. void OnToggleGridState( wxCommandEvent& aEvent ); void OnSelectUnits( wxCommandEvent& aEvent ); void OnToggleCrossHairStyle( wxCommandEvent& aEvent ); // Update user interface event handlers shared by all applications derived from // EDA_DRAW_FRAME. void OnUpdateUndo( wxUpdateUIEvent& aEvent ); void OnUpdateRedo( wxUpdateUIEvent& aEvent ); void OnUpdateGrid( wxUpdateUIEvent& aEvent ); void OnUpdateUnits( wxUpdateUIEvent& aEvent ); void OnUpdateCrossHairStyle( wxUpdateUIEvent& aEvent ); /** * Function GeneralControl * performs application specific control using \a aDC at \a aPosition in logical units. *

* Override this function for application specific control. This function gets * called on every mouse and key event. *

* @param aDC A device context. * @param aPosition The current cursor position in logical (drawing) units. * @param aHotKey A key event used for application specific control if not zero. */ virtual bool GeneralControl( wxDC* aDC, const wxPoint& aPosition, int aHotKey = 0 ) { return false; } /** * Function OnSize * recalculates the size of toolbars and display panel when the frame size changes. */ virtual void OnSize( wxSizeEvent& event ); void OnEraseBackground( wxEraseEvent& SizeEvent ); virtual void OnZoom( wxCommandEvent& event ); /** * Function SetNextZoom() * changes the zoom to the next one available. */ void SetNextZoom(); /** * Function SetPrevZoom() * changes the zoom to the previous one available. */ void SetPrevZoom(); /** * Function SetPresetZoom() * changes zoom to one of the preset values. * @param aIndex is the zoom index from the list. */ void SetPresetZoom( int aIndex ); /** * Function RedrawScreen * redraws the entire screen area by updating the scroll bars and mouse pointer in * order to have \a aCenterPoint at the center of the screen. * @param aCenterPoint The position in logical units to center the scroll bars. * @param aWarpPointer Moves the mouse cursor to \a aCenterPoint if true. */ void RedrawScreen( const wxPoint& aCenterPoint, bool aWarpPointer ); /** * Function RedrawScreen2 * puts the crosshair back to the screen position it had before zooming * @param posBefore screen position of the crosshair before zooming */ void RedrawScreen2( const wxPoint& posBefore ); /** * Function Zoom_Automatique * redraws the screen with best zoom level and the best centering * that shows all the page or the board */ void Zoom_Automatique( bool aWarpPointer ); /* Set the zoom level to show the area Rect */ void Window_Zoom( EDA_RECT& Rect ); /** Return the zoom level which displays the full page on screen */ virtual double BestZoom() = 0; /** * Function GetZoom * @return The current zoom level. */ double GetZoom(); /** * Function DrawWorkSheet * Draws on screen the page layout with the frame and the basic inscriptions. * @param aDC The device context. * @param aScreen screen to draw * @param aLineWidth The pen width to use to draw the layout. * @param aScale The mils to Iu conversion factor. * @param aFilename The filename to display in basic inscriptions. */ void DrawWorkSheet( wxDC* aDC, BASE_SCREEN* aScreen, int aLineWidth, double aScale, const wxString &aFilename ); void DisplayToolMsg( const wxString& msg ); virtual void RedrawActiveWindow( wxDC* DC, bool EraseBg ) = 0; virtual void OnLeftClick( wxDC* DC, const wxPoint& MousePos ) = 0; virtual void OnLeftDClick( wxDC* DC, const wxPoint& MousePos ); virtual bool OnRightClick( const wxPoint& MousePos, wxMenu* PopMenu ) = 0; virtual void ToolOnRightClick( wxCommandEvent& event ); void AdjustScrollBars( const wxPoint& aCenterPosition ); /** * Function OnActivate (virtual) * is called when activating the frame. * In derived classes with a overriding OnActivate function, * do not forget to call this EDA_DRAW_FRAME::OnActivate( event ) basic function. */ virtual void OnActivate( wxActivateEvent& event ); /** * Function UpdateStatusBar * updates the status bar information. * * The base method updates the absolute and relative coordinates and the * zoom information. If you override this virtual method, make sure to call * this subclassed method. The status bar can draw itself. This is not * a drawing function per se, but rather updates lines of text held by * the components within the status bar which is owned by the wxFrame. *

* On a MAC, be careful about calling this function when there is an * existing wxDC in existence on a sibling window. */ virtual void UpdateStatusBar(); /** * Function DisplayUnitsMsg * displays current unit pane on the status bar. */ void DisplayUnitsMsg(); /* Handlers for block commands */ virtual void InitBlockPasteInfos(); /** * Function HandleBlockBegin * initializes the block command including the command type, initial position, * and other variables. */ virtual bool HandleBlockBegin( wxDC* aDC, int aKey, const wxPoint& aPosition ); /** * Function BlockCommand * Returns the block command code (BLOCK_MOVE, BLOCK_COPY...) corresponding to the * keys pressed (ALT, SHIFT, SHIFT ALT ..) when block command is started by dragging * the mouse. * * @param aKey = the key modifiers (Alt, Shift ...) * @return the block command id (BLOCK_MOVE, BLOCK_COPY...) */ virtual int BlockCommand( int aKey ); /** * Function HandleBlockPlace( ) * Called after HandleBlockEnd, when a block command needs to be * executed after the block is moved to its new place * (bloc move, drag, copy .. ) * Parameters must be initialized in GetScreen()->m_BlockLocate */ virtual void HandleBlockPlace( wxDC* DC ); /** * Function HandleBlockEnd( ) * Handle the "end" of a block command, * i.e. 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 ); /** * Function CopyToClipboard * copies the current page or the current block to the clipboard. */ void CopyToClipboard( wxCommandEvent& event ); /* interprocess communication */ void OnSockRequest( wxSocketEvent& evt ); void OnSockRequestServer( wxSocketEvent& evt ); void LoadSettings( wxConfigBase* aCfg ); // override virtual void SaveSettings( wxConfigBase* aCfg ); // override virtual /** * Append a message to the message panel. * * This helper method checks to make sure the message panel exists in * the frame and appends a message to it using the message panel * AppendMessage() method. * * @param textUpper - The message upper text. * @param textLower - The message lower text. * @param color - A color ID from the KiCad color list (see colors.h). * @param pad - Number of spaces to pad between messages (default = 4). */ void AppendMsgPanel( const wxString& textUpper, const wxString& textLower, EDA_COLOR_T color, int pad = 6 ); /** * Clear all messages from the message panel. */ void ClearMsgPanel( void ); /** * Function SetMsgPanel * clears the message panel and populates it with the contents of \a aList. * * @param aList is the list of #MSG_PANEL_ITEM objects to fill the message panel. */ void SetMsgPanel( const std::vector< MSG_PANEL_ITEM >& aList ); void SetMsgPanel( EDA_ITEM* aItem ); /** * Function PrintPage * used to print a page * Print the page pointed by current screen, set by the calling print function * @param aDC = wxDC given by the calling print function * @param aPrintMask = not used here * @param aPrintMirrorMode = not used here (Set when printing in mirror mode) * @param aData = a pointer on an auxiliary data (not always used, NULL if not used) */ virtual void PrintPage( wxDC* aDC, LSET aPrintMask, bool aPrintMirrorMode, void* aData = NULL ); /** * Function CoordinateToString * is a helper to convert the \a integer coordinate \a aValue to a string in inches or mm * according to the current user units setting. * @param aValue The coordinate to convert. * @param aConvertToMils Convert inch values to mils if true. This setting has no effect if * the current user unit is millimeters. * @return The converted string for display in user interface elements. */ wxString CoordinateToString( int aValue, bool aConvertToMils = false ) const; /** * Function LengthDoubleToString * is a helper to convert the \a double value \a aValue to a string in inches or mm * according to the current user units setting. * @param aValue The coordinate to convert. * @param aConvertToMils Convert inch values to mils if true. This setting has no effect if * the current user unit is millimeters. * @return The converted string for display in user interface elements. */ wxString LengthDoubleToString( double aValue, bool aConvertToMils = false ) const; /** * Function UseGalCanvas * used to switch between standard and GAL-based canvas. * * @param aEnable True for GAL-based canvas, false for standard canvas. */ virtual void UseGalCanvas( bool aEnable ); /** * Function IsGalCanvasActive * is used to check which canvas (GAL-based or standard) is currently in use. * * @return True for GAL-based canvas, false for standard canvas. */ bool IsGalCanvasActive() const { return m_galCanvasActive; } /** * Function GetGalCanvas * returns a pointer to GAL-based canvas of given EDA draw frame. * * @return Pointer to GAL-based canvas. */ EDA_DRAW_PANEL_GAL* GetGalCanvas() const { return m_galCanvas; } void SetGalCanvas( EDA_DRAW_PANEL_GAL* aPanel ) { m_galCanvas = aPanel; } /** * Function GetToolManager * returns the tool manager instance, if any. */ TOOL_MANAGER* GetToolManager() const { return m_toolManager; } /** * Function GetDisplayOptions * A way to pass info to draw functions. the base class has no knowledge about * these options. It is virtual because this function must be overloaded to * pass usefull info. */ virtual void* GetDisplayOptions() { return NULL; } DECLARE_EVENT_TABLE() }; #endif // EDA_DRAW_FRAME_H_