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kicad/include/class_base_screen.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Jean-Pierre Charras, jaen-pierre.charras@gipsa-lab.inpg.com
* Copyright (C) 2011 Wayne Stambaugh <stambaughw@verizon.net>
* Copyright (C) 1992-2015 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 <draw_frame.h>
#include <base_struct.h>
#include <class_undoredo_container.h>
#include <block_commande.h>
#include <common.h>
#include <id.h>
/**
* Class GRID_TYPE
* is for grid arrays.
*/
class GRID_TYPE
{
public:
int m_CmdId; // The command id of this grid ( first id is ID_POPUP_GRID_LEVEL_1000 )
wxRealPoint m_Size; // the size in internal unit of the grid (can differ for X and Y axis)
GRID_TYPE& operator=( const GRID_TYPE& item )
{
if( this != &item )
{
m_CmdId = item.m_CmdId;
m_Size = item.m_Size;
}
return *this;
}
const bool operator==( const GRID_TYPE& item ) const
{
return m_Size == item.m_Size && m_CmdId == item.m_CmdId;
}
};
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.
int m_UndoRedoCountMax; ///< undo/Redo command Max depth
/**
* 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.
//----< Old public API now is private, and migratory>------------------------
// called only from EDA_DRAW_FRAME
friend class EDA_DRAW_FRAME;
/**
* 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 ) 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 aGridOrigin Origin point of the snap grid.
* @param aSnapToGrid Sets the cross hair position to the nearest grid position to
* \a aPosition.
*
*/
void setCrossHairPosition( const wxPoint& aPosition, const wxPoint& aGridOrigin, bool aSnapToGrid );
/**
* 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 aGridOrigin The origin point of the snap grid.
* @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, const wxPoint& aGridOrigin,
wxRealPoint* aGridSize ) const;
/**
* Function getCursorPosition
* returns the current cursor position in logical (drawing) units.
* @param aOnGrid Returns the nearest grid position at the current cursor position.
* @param aGridOrigin Origin point of the snap grid.
* @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, const wxPoint& aGridOrigin, wxRealPoint* aGridSize ) const;
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;
}
const wxPoint& getScrollCenterPosition() const { return m_scrollCenter; }
void setScrollCenterPosition( const wxPoint& aPoint ) { m_scrollCenter = aPoint; }
//----</Old public API now is private, and migratory>------------------------
public:
static wxString m_PageLayoutDescrFileName; ///< the name of the page layout descr file,
///< or emty to used the default pagelayout
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)
// block control
BLOCK_SELECTOR m_BlockLocate; ///< Block description for block commands
int m_ScreenNumber;
int m_NumberOfScreens;
std::vector<double> 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; }
/* 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();
}
int GetMaxUndoItems() const { return m_UndoRedoCountMax; }
void SetMaxUndoItems( int aMax )
{
if( aMax >= 0 && aMax < ABS_MAX_UNDO_ITEMS )
m_UndoRedoCountMax = aMax;
else
{
wxFAIL_MSG( "Maximum undo items not within limits" );
m_UndoRedoCountMax = DEFAULT_MAX_UNDO_ITEMS;
}
}
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; }
//----<zoom stuff>---------------------------------------------------------
/**
* 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)".
* <p>
* 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.
* <p>
* This function somehow got designed to be the inverse of SetScalingFactor().
* <p>
* device coordinates = user coordinates * GetScalingFactor()
*/
double GetScalingFactor() const;
//----<grid stuff>----------------------------------------------------------
/**
* Return the command ID of the currently selected grid.
*
* @return int - Currently selected grid command ID.
*/
int GetGridCmdId() const { return m_Grid.m_CmdId; }
/**
* 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; }
/**
* set the current grid size m_Grid.
* The size must be existing in grid list (in m_grids)
* If not, the near existing grid size is used
* @param size = the size of the new grid
* @return the grid id offset (id from ID_POPUP_GRID_LEVEL_1000 )
* of the currently selected grid.
*/
int SetGrid( const wxRealPoint& size );
/**
* Function SetGrid
* sets the grid size from command ID (not an index in grid list, but a wxID).
* @param aCommandId = the wxWidgets command ID
* @return the grid id offset (id from ID_POPUP_GRID_LEVEL_1000 )
* of the currently selected grid.
*/
int SetGrid( int aCommandId );
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 GridExists
* tests for grid command ID (not an index in grid list, but a wxID) exists in grid list.
* @param aCommandId = the wxWidgets command ID
* @return true if the grid exists in grid list.
*/
bool GridExists( int aCommandId );
/**
* 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().
* Returns the current list of grids.
*/
const GRIDS& GetGrids() const
{
return m_grids;
}
/**
* Function BuildGridsChoiceList().
* Build the human readable list of grid list, for menus or combo boxes
* the list shows the grid size both in mils or mm.
* @param aGridsList = a wxArrayString to populate
* @param aMmFirst = true to have mm first and mils after
* false to have mils first and mm after
* @return the index of the curr grid in list, if found or -1
*/
int BuildGridsChoiceList( wxArrayString& aGridsList, bool aMmFirst) 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(); }
#if defined(DEBUG)
void Show( int nestLevel, std::ostream& os ) const; // overload
#endif
};
#endif // CLASS_BASE_SCREEN_H_