327 lines
12 KiB
C++
327 lines
12 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) 2011 Wayne Stambaugh <stambaughw@verizon.net>
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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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class PICKED_ITEMS_LIST;
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/**
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* 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 specific 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 to 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/undone by a specific operation
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*/
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enum UNDO_REDO_T {
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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
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// 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 for handling wires changes.
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UR_LIBEDIT, // Specific to the component editor (libedit creates a full copy
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// of the current component when changed)
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UR_EXCHANGE_T ///< Use for changing the schematic text type where swapping
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///< data structure is insufficient to restor the change.
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};
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class ITEM_PICKER
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{
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private:
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STATUS_FLAGS m_pickerFlags; /* a copy of m_Flags member. useful in mode/drag
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* undo/redo commands */
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UNDO_REDO_T m_undoRedoStatus; /* type of operation to undo/redo for this item */
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EDA_ITEM* m_pickedItem; /* Pointer on the schematic or board item that is concerned
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* (picked), or in undo redo commands, the copy of an
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* edited item. */
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KICAD_T m_pickedItemType; /* type of schematic or board item that is concerned */
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EDA_ITEM* 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
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* modified, and the copy of initial item exists (the
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* duplicate) m_Item points the duplicate (i.e the old
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* copy of an active item) and m_Link points the active
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* item in schematic */
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public:
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ITEM_PICKER( EDA_ITEM* aItem = NULL, UNDO_REDO_T aUndoRedoStatus = UR_UNSPECIFIED );
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EDA_ITEM* GetItem() const { return m_pickedItem; }
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void SetItem( EDA_ITEM* aItem )
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{
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m_pickedItem = aItem;
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m_pickedItemType = aItem ? aItem->Type() : TYPE_NOT_INIT;
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}
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KICAD_T GetItemType() const { return m_pickedItemType; }
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void SetStatus( UNDO_REDO_T aStatus ) { m_undoRedoStatus = aStatus; }
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UNDO_REDO_T GetStatus() const { return m_undoRedoStatus; }
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void SetFlags( STATUS_FLAGS aFlags ) { m_pickerFlags = aFlags; }
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STATUS_FLAGS GetFlags() const { return m_pickerFlags; }
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void SetLink( EDA_ITEM* aItem ) { m_link = aItem; }
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EDA_ITEM* GetLink() const { return m_link; }
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};
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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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UNDO_REDO_T m_Status; /* info about operation to undo/redo for this item. can be
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* UR_UNSPECIFIED */
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wxPoint m_TransformPoint; /* used to undo redo command by the same command: usually
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* need to know the rotate point or the move vector */
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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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/**
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* Function PushItem
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* pushes \a aItem to the top of the list
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* @param aItem Picker to push on to the list.
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*/
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void PushItem( const ITEM_PICKER& aItem );
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/**
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* Function PopItem
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* @return The picker removed from the top of the list.
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*/
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ITEM_PICKER PopItem();
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/**
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* Function IsItemInList
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* @return True if \a aItem is found in the pick list.
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*/
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bool ContainsItem( const EDA_ITEM* aItem ) const;
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/**
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* Function FindItem
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* @return Index of the searched item. If the item is not stored in the list, negative value
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* is returned.
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*/
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int FindItem( const EDA_ITEM* aItem ) const;
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/**
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* Function ClearItemsList
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* deletes 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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* deletes the list of pickers, AND the data pointed by m_PickedItem or
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* 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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* <p>
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* This is useful when pop a list from Undo to Redo (and vice-versa) because
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* sometimes undo (or redo) a command needs to keep the order of successive
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* changes. 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 ) const;
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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_ITEM* GetPickedItem( unsigned int aIdx ) const;
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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_ITEM* GetPickedItemLink( unsigned int aIdx ) const;
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/**
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* Function GetPickedItemStatus
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* @return The type of undo/redo operation 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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UNDO_REDO_T GetPickedItemStatus( unsigned int aIdx ) const;
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/**
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* Function GetPickerFlags
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* returns 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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STATUS_FLAGS GetPickerFlags( unsigned aIdx ) const;
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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 picker exists or false if does not exist
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*/
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bool SetPickedItem( EDA_ITEM* 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 picker exists or false if does not exist
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*/
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bool SetPickedItem( EDA_ITEM* aItem, UNDO_REDO_T 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 picker exists, or false if does not exist
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*/
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bool SetPickedItemLink( EDA_ITEM* aLink, unsigned aIdx );
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/**
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* Function SetPickedItemStatus
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* sets 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( UNDO_REDO_T 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 flag 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( STATUS_FLAGS aFlags, unsigned aIdx );
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/**
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* Function RemovePicker
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* removes 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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* copies all data from aSource to the list.
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* Items picked are not copied. just pointer in them are copied
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* @param aSource The list of items to copy to the list.
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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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