275 lines
10 KiB
C++
275 lines
10 KiB
C++
/*
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* This program source code file is part of KICAD, a free EDA CAD application.
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*
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* Copyright (C) 2009 jean-pierre.charras@gipsa-lab.inpg.fr
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* Copyright (C) 2009 Kicad Developers, see change_log.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef _CLASS_UNDOREDO_CONTAINER_H
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#define _CLASS_UNDOREDO_CONTAINER_H
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#include <vector>
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#include "base_struct.h"
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/**
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* @info Undo Redo considerations:
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* Basically we have 3 cases
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* New item
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* Deleted item
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* Modified item
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* there is also a specfific case in eeschema, when wires are modified
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* If an item is modified, a copy of the "old" item parameters value is held.
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* When an item is deleted or added (new item) the pointer points the item, and there is
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* no other copy.
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* However, because there are some commands that concern a lot of items
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* and modify them, but modifications are easy tu undo/redo,
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* so a copy of old items is not necessary. They are block command
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* Move block
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* Rotate block
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* Mirror or Flip block
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* and they are undo/redo by the same command
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*/
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/* Type of undo/redo operations
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* each type must be redo/undoed by a specfic operation
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*/
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enum UndoRedoOpType {
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UR_UNSPECIFIED = 0, // illegal
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UR_CHANGED, // params of items have a value changed: undo is made by exchange values with a copy of these values
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UR_NEW, // new item, undo by changing in deleted
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UR_DELETED, // deleted item, undo by changing in deleted
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UR_MOVED, // moved item, undo by move it
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UR_MIRRORED_X, // mirrored item, undo by mirror X
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UR_MIRRORED_Y, // mirrored item, undo by mirror Y
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UR_ROTATED, // Rotated item (counterclockwise), undo by rotating it
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UR_ROTATED_CLOCKWISE, // Rotated item (clockwise), undo by rotating it
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UR_FLIPPED, // flipped (board items only), undo by flipping it
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UR_WIRE_IMAGE, // Specific to eeschema: handle wires changes
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UR_MODEDIT, // Specific to the module editor (modedit creates a full copy of the current module when changed)
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UR_LIBEDIT // Specific to the component editor (libedit creates a full copy of the current component when changed)
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};
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class ITEM_PICKER
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{
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public:
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UndoRedoOpType m_UndoRedoStatus; /* type of operation to undo/redo for this item */
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EDA_BaseStruct* m_PickedItem; /* Pointer on the schematic or board item that is concerned (picked),
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* or in undo redo commands, the copy of an edited item.
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*/
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KICAD_T m_PickedItemType; /* type of schematic or board item that is concerned
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*/
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int m_PickerFlags; /* a copy of m_Flags member. usefull in mode/drag undo/redo commands */
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EDA_BaseStruct* m_Link; /* Pointer on an other item. Used in undo redo command
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* used when a duplicate exists i.e. when an item is modified,
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* and the copy of initial item exists (the duplicate)
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* m_Item points the duplicate (i.e the old copy of an active item)
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* and m_Link points the active item in schematic
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*/
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public:
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ITEM_PICKER( EDA_BaseStruct* aItem = NULL,
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UndoRedoOpType aUndoRedoStatus = UR_UNSPECIFIED );
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};
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/* Class PICKED_ITEMS_LIST
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* is a holder to handle information on schematic or board items.
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* The information held is a pointer on each item, and the command made.
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*/
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class PICKED_ITEMS_LIST
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{
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public:
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UndoRedoOpType m_Status; /* info about operation to undo/redo for this item. can be UR_UNSPECIFIED */
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wxPoint m_TransformPoint; /* used to undo redo command by the same command:
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* we usually need to know the rotate point or the move vector
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*/
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private:
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std::vector <ITEM_PICKER> m_ItemsList;
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public:
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PICKED_ITEMS_LIST();
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~PICKED_ITEMS_LIST();
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/** PushItem
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* push a picker to the top of the list
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* @param aItem = picker to push
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*/
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void PushItem( ITEM_PICKER& aItem );
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/** PopItem
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* @return the picker from the top of the list
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* the picker is removed from the list
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*/
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ITEM_PICKER PopItem();
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/**
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* Function ClearItemsList
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* delete only the list of pickers, NOT the picked data itself
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*/
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void ClearItemsList();
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/**
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* Function ClearListAndDeleteItems
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* delete the list of pickers, AND the data pointed
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* by m_PickedItem or m_PickedItemLink, according to the type of undo/redo command recorded
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*/
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void ClearListAndDeleteItems();
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/**
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* Function GetCount()
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* @return the count of pickers stored in this list
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*/
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unsigned GetCount() const
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{
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return m_ItemsList.size();
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}
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/**
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* Function ReversePickersListOrder()
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* reverses the order of pickers stored in this list
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* Useful when pop a list from Undo to Redo (and vice-versa)
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* because sometimes undo (or redo) a command needs to keep the
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* order of successive changes.
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* and obviously, undo and redo are in reverse order
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*/
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void ReversePickersListOrder();
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/**
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* Function GetItemWrapper
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* @return the picker of a picked item
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* @param aIdx = index of the picker in the picked list
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* if this picker does not exist, a picker is returned,
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* with its members set to 0 or NULL
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*/
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ITEM_PICKER GetItemWrapper( unsigned int aIdx );
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/**
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* Function GetPickedItem
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* @return a pointer to the picked item
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* @param aIdx = index of the picked item in the picked list
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*/
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EDA_BaseStruct* GetPickedItem( unsigned int aIdx );
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/**
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* Function GetPickedItemLink
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* @return link of the picked item, or null if does not exist
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* @param aIdx = index of the picked item in the picked list
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*/
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EDA_BaseStruct* GetPickedItemLink( unsigned int aIdx );
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/**
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* Function GetPickedItemStatus
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* @return the type of undo/redo opertaion associated to the picked item,
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* or UR_UNSPECIFIED if does not exist
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* @param aIdx = index of the picked item in the picked list
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*/
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UndoRedoOpType GetPickedItemStatus( unsigned int aIdx );
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/**
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* Function GetPickerFlags
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* return the value of the picker flag
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* @param aIdx = index of the picker in the picked list
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* @return the value stored in the picker, if the picker exists, or 0 if does not exist
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*/
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int GetPickerFlags( unsigned aIdx );
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/**
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* Function SetPickedItem
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* @param aItem = a pointer to the item to pick
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* @param aIdx = index of the picker in the picked list
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* @return true if the pixker exists, or false if does not exist
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*/
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bool SetPickedItem( EDA_BaseStruct* aItem, unsigned aIdx );
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/**
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* Function SetPickedItem
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* @param aItem = a pointer to the item to pick
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* @param aStatus = the type of undo/redo operation associated to the item to pick
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* @param aIdx = index of the picker in the picked list
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* @return true if the pixker exists, or false if does not exist
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*/
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bool SetPickedItem( EDA_BaseStruct* aItem, UndoRedoOpType aStatus, unsigned aIdx );
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/**
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* Function SetPickedItemLink
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* Set the link associated to a given picked item
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* @param aLink = the link to the item associated to the picked item
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* @param aIdx = index of the picker in the picked list
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* @return true if the pixker exists, or false if does not exist
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*/
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bool SetPickedItemLink( EDA_BaseStruct* aLink, unsigned aIdx );
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/**
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* Function SetPickedItemStatus
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* Set the type of undo/redo operation for a given picked item
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* @param aStatus = the type of undo/redo operation associated to the picked item
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* @param aIdx = index of the picker in the picked list
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* @return true if the picker exists, or false if does not exist
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*/
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bool SetPickedItemStatus( UndoRedoOpType aStatus, unsigned aIdx );
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/**
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* Function SetPickerFlags
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* Set the flags of the picker (usually to the picked item m_Flags value)
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* @param aFlags = the value to save in picker
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* @param aIdx = index of the picker in the picked list
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* @return true if the picker exists, or false if does not exist
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*/
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bool SetPickerFlags( int aFlags, unsigned aIdx );
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/**
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* Function RemovePicker
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* remove one entry (one picker) from the list of picked items
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* @param aIdx = index of the picker in the picked list
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* @return true if ok, or false if did not exist
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*/
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bool RemovePicker( unsigned aIdx );
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/**
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* Function CopyList
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* copy all data from aSource
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* Items picked are not copied. just pointer on them are copied
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*/
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void CopyList( const PICKED_ITEMS_LIST& aSource );
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};
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/**
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* Class UNDO_REDO_CONTAINER
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* is a holder to handle alist of undo (or redo) command.
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* this class handles a list of ITEM_PICKER (each manage one schematic or board item).
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*/
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class UNDO_REDO_CONTAINER
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{
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public:
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std::vector <PICKED_ITEMS_LIST*> m_CommandsList; // the list of possible undo/redo commands
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public:
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UNDO_REDO_CONTAINER();
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~UNDO_REDO_CONTAINER();
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void PushCommand( PICKED_ITEMS_LIST* aCommand );
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PICKED_ITEMS_LIST* PopCommand();
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void ClearCommandList();
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};
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#endif // _CLASS_UNDOREDO_CONTAINER_H
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