/* * 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 */ /** * @file class_base_screen.h * @brief BASE_SCREEN class implementation. */ #ifndef CLASS_BASE_SCREEN_H_ #define CLASS_BASE_SCREEN_H_ #include #include #include #include /** * Class GRID_TYPE * is for grid arrays. */ class GRID_TYPE { public: int m_Id; wxRealPoint m_Size; GRID_TYPE& operator=( const GRID_TYPE& item ) { if( this != &item ) { m_Id = item.m_Id; m_Size = item.m_Size; } return *this; } const bool operator==( const GRID_TYPE& item ) const { return m_Size == item.m_Size && m_Id == item.m_Id; } }; typedef std::vector< GRID_TYPE > GRIDS; /** * Class BASE_SCREEN * handles how to draw a screen (a board, a schematic ...) */ class BASE_SCREEN : public EDA_ITEM { private: GRIDS m_grids; ///< List of valid grid sizes. bool m_FlagModified; ///< Indicates current drawing has been modified. bool m_FlagSave; ///< Indicates automatic file save. EDA_ITEM* m_CurrentItem; ///< Currently selected object GRID_TYPE m_Grid; ///< Current grid selection. wxPoint m_scrollCenter; ///< Current scroll center point in logical units. wxPoint m_MousePosition; ///< Mouse cursor coordinate in logical units. /** * The cross hair position in logical (drawing) units. The cross hair is not the cursor * position. It is an addition indicator typically drawn on grid to indicate to the * user where the current action will be performed. */ wxPoint m_crossHairPosition; double m_Zoom; ///< Current zoom coefficient. public: wxPoint m_DrawOrg; ///< offsets for drawing the circuit on the screen wxPoint m_O_Curseur; /* Relative Screen cursor coordinate (on grid) * in user units. (coordinates from last reset position)*/ // Scrollbars management: int m_ScrollPixelsPerUnitX; ///< Pixels per scroll unit in the horizontal direction. int m_ScrollPixelsPerUnitY; ///< Pixels per scroll unit in the vertical direction. wxSize m_ScrollbarNumber; /* Current virtual draw area size in scroll units. * m_ScrollbarNumber * m_ScrollPixelsPerUnit = * virtual draw area size in pixels */ wxPoint m_ScrollbarPos; ///< Current scroll bar position in scroll units. wxPoint m_StartVisu; /* Coordinates in drawing units of the current * view position (upper left corner of device) */ bool m_Center; /* Center on screen. If true (0.0) is centered * on screen coordinates can be < 0 and * > 0 except for schematics. * false: when coordinates can only be >= 0 * Schematic */ bool m_FirstRedraw; // Undo/redo list of commands UNDO_REDO_CONTAINER m_UndoList; ///< Objects list for the undo command (old data) UNDO_REDO_CONTAINER m_RedoList; ///< Objects list for the redo command (old data) unsigned m_UndoRedoCountMax; ///< undo/Redo command Max depth // block control BLOCK_SELECTOR m_BlockLocate; ///< Block description for block commands int m_ScreenNumber; int m_NumberOfScreens; wxPoint m_GridOrigin; std::vector m_ZoomList; ///< standard zoom (i.e. scale) coefficients. bool m_IsPrinting; public: BASE_SCREEN( KICAD_T aType = SCREEN_T ); ~BASE_SCREEN(); /** * Function SetCurItem * sets the currently selected object, m_CurrentItem. * @param aItem Any object derived from EDA_ITEM */ void SetCurItem( EDA_ITEM* aItem ) { m_CurrentItem = aItem; } EDA_ITEM* GetCurItem() const { return m_CurrentItem; } void InitDataPoints( const wxSize& aPageSizeInternalUnits ); /** * Function MilsToIuScalar * returns the scalar required to convert mils to internal units. * * @note This is a temporary hack until the derived objects SCH_SCREEN and PCB_SCREEN * no longer need to be derived from BASE_SCREEN. I does allow removal of the * obsolete GetInternalUnits function. */ virtual int MilsToIuScalar() { return 1; } /** * 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 { if( aInvertY ) return wxPoint( m_crossHairPosition.x, -m_crossHairPosition.y ); return wxPoint( m_crossHairPosition.x, m_crossHairPosition.y ); } /** * 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 ); /* general Undo/Redo command control */ /** * Function ClearUndoORRedoList (virtual). * this function must remove the aItemCount old commands from aList * and delete commands, pickers and picked items if needed * Because picked items must be deleted only if they are not in use, this * is a virtual pure function that must be created for SCH_SCREEN and * PCB_SCREEN * @param aList = the UNDO_REDO_CONTAINER of commands * @param aItemCount = number of old commands to delete. -1 to remove all * old commands this will empty the list of commands. * Commands are deleted from the older to the last. */ virtual void ClearUndoORRedoList( UNDO_REDO_CONTAINER& aList, int aItemCount = -1 ) = 0; /** * Function ClearUndoRedoList * clear undo and redo list, using ClearUndoORRedoList() * picked items are deleted by ClearUndoORRedoList() according to their * status */ virtual void ClearUndoRedoList(); /** * Function PushCommandToUndoList * add a command to undo in undo list * delete the very old commands when the max count of undo commands is * reached * ( using ClearUndoORRedoList) */ virtual void PushCommandToUndoList( PICKED_ITEMS_LIST* aItem ); /** * Function PushCommandToRedoList * add a command to redo in redo list * delete the very old commands when the max count of redo commands is * reached * ( using ClearUndoORRedoList) */ virtual void PushCommandToRedoList( PICKED_ITEMS_LIST* aItem ); /** PopCommandFromUndoList * return the last command to undo and remove it from list * nothing is deleted. */ virtual PICKED_ITEMS_LIST* PopCommandFromUndoList(); /** PopCommandFromRedoList * return the last command to undo and remove it from list * nothing is deleted. */ virtual PICKED_ITEMS_LIST* PopCommandFromRedoList(); int GetUndoCommandCount() const { return m_UndoList.m_CommandsList.size(); } int GetRedoCommandCount() const { return m_RedoList.m_CommandsList.size(); } void SetModify() { m_FlagModified = true; } void ClrModify() { m_FlagModified = false;; } void SetSave() { m_FlagSave = true; } void ClrSave() { m_FlagSave = false; } bool IsModify() const { return m_FlagModified; } bool IsSave() const { return m_FlagSave; } //------------------------------------------------------------- /** * Function GetZoom * returns the current "zoom factor", which is a measure of * "internal units per device unit", or "world units per device unit". * A device unit is typically a pixel. */ double GetZoom() const { return m_Zoom; } /** * Function SetZoom * adjusts the current zoom factor. * * @param iu_per_du is the number of internal units (world units) per * device units (pixels typically). */ bool SetZoom( double iu_per_du ); bool SetNextZoom(); bool SetPreviousZoom(); bool SetFirstZoom(); bool SetLastZoom(); /** * Function GetMaxAllowedZoom * returns the maximum allowed zoom factor, which was established as the last entry * in m_ZoomList. */ double GetMaxAllowedZoom() const { return m_ZoomList.size() ? *m_ZoomList.rbegin() : 1.0; } /** * Function GetMinAllowedZoom * returns the minimum allowed zoom factor, which was established as the first entry * in m_ZoomList. */ double GetMinAllowedZoom() const { return m_ZoomList.size() ? *m_ZoomList.begin() : 1.0; } /** * Function SetScalingFactor * sets the scaling factor of "internal unit per device unit". * If the output device is a screen, then "device units" are pixels. The * "logical unit" is wx terminology, and corresponds to KiCad's "Internal Unit (IU)". *

* This scaling factor is "internal units per device unit". This function is * the same thing currently as SetZoom(), but clamps the argument within a * legal range. * @param iu_per_du is the current scale used to draw items onto the device * context wxDC. */ void SetScalingFactor( double iu_per_du ); /** * Function GetScalingFactor * returns the inverse of the current scale used to draw items on screen. *

* This function somehow got designed to be the inverse of SetScalingFactor(). *

* device coordinates = user coordinates * GetScalingFactor() */ double GetScalingFactor() const; //-------------------------------------------------------------- /** * Return the command ID of the currently selected grid. * * @return int - Currently selected grid command ID. */ int GetGridId() const { return m_Grid.m_Id; } /** * Return the grid size of the currently selected grid. * * @return wxRealPoint - The currently selected grid size. */ const wxRealPoint& GetGridSize() const { return m_Grid.m_Size; } /** * Return the grid object of the currently selected grid. * * @return GRID_TYPE - The currently selected grid. */ const GRID_TYPE& GetGrid() const { return m_Grid; } const wxPoint& GetGridOrigin() const { return m_GridOrigin; } void SetGrid( const wxRealPoint& size ); /** * Function SetGrid * sets the grid size from command ID. */ void SetGrid( int id ); void SetGridList( GRIDS& sizelist ); void AddGrid( const GRID_TYPE& grid ); void AddGrid( const wxRealPoint& size, int id ); void AddGrid( const wxRealPoint& size, EDA_UNITS_T aUnit, int id ); /** * Function GetGridCount(). * Return the size of the grid list. * * @returns - The size of the grid list. */ size_t GetGridCount() const { return m_grids.size(); } /** * Function GetGrid() * Returns the grid object at \a aIndex. * * @param aIndex - The grid list index. * @return - The grid object at \a aIndex or the current grid if the grid list is empty. */ GRID_TYPE& GetGrid( size_t aIndex ); /** * Function GetGrids(). * Copy the grid list to \a aList. * * @param aList - List to copy to. */ void GetGrids( GRIDS& aList ); void SetMousePosition( const wxPoint& aPosition ) { m_MousePosition = 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 { return useMouse ? m_MousePosition : m_crossHairPosition; } /** * 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 GetCursorScreenPosition * returns the cross hair position in device (display) units.b * @return The current cross hair position. */ wxPoint GetCrossHairScreenPosition() 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 GetClass * returns the class name. * @return wxString */ virtual wxString GetClass() const { return wxT( "BASE_SCREEN" ); } inline bool IsBlockActive() const { return !m_BlockLocate.IsIdle(); } void ClearBlockCommand() { m_BlockLocate.Clear(); } const wxPoint& GetScrollCenterPosition() const { return m_scrollCenter; } void SetScrollCenterPosition( const wxPoint& aCenterPosition ) { m_scrollCenter = aCenterPosition; } #if defined(DEBUG) void Show( int nestLevel, std::ostream& os ) const; // overload #endif }; #endif // CLASS_BASE_SCREEN_H_