429 lines
16 KiB
C++
429 lines
16 KiB
C++
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/*
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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, jaen-pierre.charras@gipsa-lab.inpg.com
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* Copyright (C) 2011-2015 Wayne Stambaugh <stambaughw@verizon.net>
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* Copyright (C) 1992-2015 KiCad Developers, see AUTHORS.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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/**
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* @file sch_sheet_path.h
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* @brief Definition of the SCH_SHEET_PATH and SCH_SHEET_LIST classes for Eeschema.
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*/
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#ifndef CLASS_DRAWSHEET_PATH_H
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#define CLASS_DRAWSHEET_PATH_H
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#include <base_struct.h>
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/** Info about complex hierarchies handling:
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* A hierarchical schematic uses sheets (hierarchical sheets) included in a
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* given sheet. Each sheet corresponds to a schematic drawing handled by a
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* SCH_SCREEN structure. A SCH_SCREEN structure contains drawings, and have
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* a filename to write it's data. Also a SCH_SCREEN display a sheet number
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* and the name of the sheet.
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*
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* In simple (and flat) hierarchies a sheet is linked to a SCH_SCREEN,
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* and a SCH_SCREEN is used by only one hierarchical sheet.
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*
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* In complex hierarchies the same SCH_SCREEN (and its data) is shared between
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* more than one sheet. Therefore subsheets (like subsheets in a SCH_SCREEN
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* shared by many sheets) can be also shared. So the same SCH_SCREEN must
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* handle different components references and parts selection depending on
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* which sheet is currently selected, and how a given subsheet is selected.
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* 2 sheets share the same SCH_SCREEN (the same drawings) if they have the
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* same filename.
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*
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* In KiCad each component and sheet receives (when created) an unique
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* identification called Time Stamp. So each sheet has 2 ids: its time stamp
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* (that cannot change) and its name ( that can be edited and therefore is
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* not reliable for strong identification). KiCad uses Time Stamp ( a unique
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* 32 bit id), to identify sheets in hierarchies.
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* A given sheet in a hierarchy is fully labeled by its path (or sheet path)
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* that is the list of time stamp found to access it through the hierarchy
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* the root sheet is /. All other sheets have a path like /1234ABCD or
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* /4567FEDC/AA2233DD/. This path can be displayed as human readable sheet
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* name like: / or /sheet1/include_sheet/ or /sheet2/include_sheet/
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*
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* So to know for a given SCH_SCREEN (a given schematic drawings) we must:
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* 1) Handle all references possibilities.
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* 2) When acceded by a given selected sheet, display (update) the
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* corresponding references and sheet path
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*
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* The class SCH_SHEET_PATH handles paths used to access a sheet. The class
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* SCH_SHEET_LIST allows to handle the full (or partial) list of sheets and
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* their paths in a complex hierarchy. The class EDA_ScreenList allow to
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* handle the list of SCH_SCREEN. It is useful to clear or save data,
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* but is not suitable to handle the full complex hierarchy possibilities
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* (usable in flat and simple hierarchies).
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*/
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class wxFindReplaceData;
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class SCH_SCREEN;
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class SCH_SHEET;
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class SCH_ITEM;
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#define SHEET_NOT_FOUND -1
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/**
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* Class SCH_SHEET_PATH
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* handles access to a sheet by way of a path.
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* <p>
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* The member m_sheets stores the list of sheets from the first (usually
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* g_RootSheet) to a given sheet in last position.
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* The _last_ sheet is usually the sheet we want to select or reach (which is
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* what the function Last() returns).
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* Others sheets constitute the "path" from the first to the last sheet.
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* </p>
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*/
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class SCH_SHEET_PATH
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{
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#define DSLSZ 32 // Max number of levels for a sheet path
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SCH_SHEET* m_sheets[ DSLSZ ];
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unsigned m_numSheets;
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public:
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SCH_SHEET_PATH();
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void Clear()
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{
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m_numSheets = 0;
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}
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unsigned GetCount()
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{
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return m_numSheets;
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}
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SCH_SHEET* GetSheet( unsigned index )
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{
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if( index < m_numSheets )
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return m_sheets[index];
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return NULL;
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}
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/**
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* Function Cmp
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* Compare if this is the same sheet path as aSheetPathToTest
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* @param aSheetPathToTest = sheet path to compare
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* @return 1 if this sheet path has more sheets than aSheetPathToTest,
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* -1 if this sheet path has fewer sheets than aSheetPathToTest,
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* or 0 if same
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*/
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int Cmp( const SCH_SHEET_PATH& aSheetPathToTest ) const;
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/**
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* Function Last
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* returns a pointer to the last sheet of the list
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* One can see the others sheet as the "path" to reach this last sheet
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*/
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SCH_SHEET* Last() const;
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/**
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* Function LastScreen
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* @return the SCH_SCREEN relative to the last sheet in list
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*/
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SCH_SCREEN* LastScreen() const;
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/**
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* Function LastDrawList
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* @return a pointer to the first schematic item handled by the
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* SCH_SCREEN relative to the last sheet in list
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*/
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SCH_ITEM* LastDrawList() const;
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/**
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* Get the last schematic item relative to the first sheet in the list.
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*
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* @return Last schematic item relative to the first sheet in the list if list
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* is not empty. Otherwise NULL.
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*/
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SCH_ITEM* FirstDrawList() const;
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/**
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* Function Push
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* store (push) aSheet in list
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* @param aSheet = pointer to the SCH_SHEET to store in list
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* Push is used when entered a sheet to select or analyze it
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* This is like cd <directory> in directories navigation
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*/
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void Push( SCH_SHEET* aSheet );
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/**
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* Function Pop
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* retrieves (pop) the last entered sheet and remove it from list
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* @return a SCH_SHEET* pointer to the removed sheet in list
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* Pop is used when leaving a sheet after a selection or analyze
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* This is like cd .. in directories navigation
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*/
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SCH_SHEET* Pop();
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/**
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* Function Path
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* the path uses the time stamps which do not changes even when editing
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* sheet parameters
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* a path is something like / (root) or /34005677 or /34005677/00AE4523
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*/
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wxString Path() const;
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/**
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* Function PathHumanReadable
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* returns the sheet path in a human readable form, i.e. as a path made
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* from sheet names. The the "normal" path instead uses the time
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* stamps in the path. (Time stamps do not change even when editing
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* sheet parameters).
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*/
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wxString PathHumanReadable() const;
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/**
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* Function BuildSheetPathInfoFromSheetPathValue
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* Fill this with data to access to the hierarchical sheet known by its path \a aPath
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* @param aPath = path of the sheet to reach (in non human readable format)
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* @param aFound - Please document me.
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* @return true if success else false
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*/
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bool BuildSheetPathInfoFromSheetPathValue( const wxString& aPath, bool aFound = false );
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/**
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* Find the previous schematic item in this sheet path object.
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*
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* @param aType - The type of schematic item object to search for.
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* @param aLastItem - Start search from aLastItem. If no aLastItem, search from
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* the end of the list.
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* @param aWrap - Wrap around the beginning of the list to find the next item if aLastItem
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* is defined.
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* @return - The previous schematic item if found. Otherwise, NULL is returned.
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*/
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SCH_ITEM* FindPreviousItem( KICAD_T aType, SCH_ITEM* aLastItem = NULL, bool aWrap = false ) const;
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/**
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* Function TestForRecursion
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*
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* test the SCH_SHEET_PATH file names to check adding the sheet stored in the file
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* \a aSrcFileName to the sheet stored in file \a aDestFileName will cause a sheet
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* path recursion.
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*
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* @param aSrcFileName is the source file name of the sheet add to \a aDestFileName.
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* @param aDestFileName is the file name of the destination sheet for \a aSrcFileName.
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* @return true if \a aFileName will cause recursion in the sheet path. Otherwise false.
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*/
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bool TestForRecursion( const wxString& aSrcFileName, const wxString& aDestFileName ) const;
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int FindSheet( const wxString& aFileName ) const;
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/**
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* Function FindSheetByName
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*
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* searches the #SCH_SHEET_PATH for a sheet named \a aSheetName.
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*
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* @param aSheetName is the name of the sheet to find.
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* @return a pointer to the sheet named \a aSheetName if found or NULL if not found.
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*/
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SCH_SHEET* FindSheetByName( const wxString& aSheetName );
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SCH_SHEET_PATH& operator=( const SCH_SHEET_PATH& d1 );
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bool operator==( const SCH_SHEET_PATH& d1 ) const;
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bool operator!=( const SCH_SHEET_PATH& d1 ) const { return !( *this == d1 ) ; }
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};
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/**
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* Class SCH_SHEET_LIST
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* handles the list of Sheets in a hierarchy.
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* Sheets are not unique, there can be many sheets with the same
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* filename and the same SCH_SCREEN reference.
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* The schematic (SCH_SCREEN) is shared between these sheets,
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* and component references are specific to a sheet path.
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* When a sheet is entered, component references and sheet number are updated.
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*/
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class SCH_SHEET_LIST
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{
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private:
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SCH_SHEET_PATH* m_list;
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int m_count; /* Number of sheets included in hierarchy,
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* starting at the given sheet in constructor .
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* the given sheet is counted
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*/
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int m_index; /* internal variable to handle GetNext(): cleared by
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* GetFirst() and incremented by GetNext() after
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* returning the next item in m_list. Also used for
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* internal calculations in BuildSheetList()
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*/
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bool m_isRootSheet;
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SCH_SHEET_PATH m_currList;
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public:
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/**
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* Constructor
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* builds the list of sheets from aSheet.
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* If aSheet == NULL (default) build the whole list of sheets in hierarchy.
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* So usually call it with no parameter.
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*/
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SCH_SHEET_LIST( SCH_SHEET* aSheet = NULL );
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~SCH_SHEET_LIST()
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{
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if( m_list )
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delete[] m_list;
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m_list = NULL;
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}
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/**
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* Function GetCount
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* @return the number of sheets in list:
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* usually the number of sheets found in the whole hierarchy
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*/
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int GetCount() const { return m_count; }
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/**
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* Function GetIndex
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* @return the last selected screen index.
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*/
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int GetIndex() const { return m_index; }
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/**
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* Function GetFirst
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* @return the first item (sheet) in m_list and prepare calls to GetNext()
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*/
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SCH_SHEET_PATH* GetFirst();
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/**
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* Function GetNext
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* @return the next item (sheet) in m_list or NULL if no more item in
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* sheet list
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*/
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SCH_SHEET_PATH* GetNext();
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/**
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* Function GetLast
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* returns the last sheet in the sheet list.
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*
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* @return Last sheet in the list or NULL if sheet list is empty.
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*/
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SCH_SHEET_PATH* GetLast();
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/**
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* Function GetPrevious
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* returns the previous sheet in the sheet list.
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*
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* @return The previous sheet in the sheet list or NULL if already at the
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* beginning of the list.
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*/
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SCH_SHEET_PATH* GetPrevious();
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/**
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* Function GetSheet
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*
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* @param aIndex A index in sheet list to get the sheet.
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* @return the sheet at \a aIndex position in m_list or NULL if \a aIndex is
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* outside the bounds of the index list.
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*/
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SCH_SHEET_PATH* GetSheet( int aIndex ) const;
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/**
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* Function GetSheetByPath
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* returns a sheet matching the path name in \a aPath.
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*
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* @param aPath A wxString object containing path of the sheet to get.
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* @param aHumanReadable True uses the human readable path for comparison.
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* False uses the timestamp generated path.
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* @return The sheet that matches \a aPath or NULL if no sheet matching
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* \a aPath is found.
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*/
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SCH_SHEET_PATH* GetSheetByPath( const wxString aPath, bool aHumanReadable = true );
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/**
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* Function FindNextItem
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* searches the entire schematic for the next schematic object.
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*
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* @param aType - The type of schematic item to find.
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* @param aSheetFound - The sheet the item was found in. NULL if the next item
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* is not found.
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* @param aLastItem - Find next item after aLastItem if not NULL.
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* @param aWrap - Wrap past around the end of the list of sheets.
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* @return If found, Returns the next schematic item. Otherwise, returns NULL.
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*/
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SCH_ITEM* FindNextItem( KICAD_T aType, SCH_SHEET_PATH** aSheetFound = NULL,
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SCH_ITEM* aLastItem = NULL, bool aWrap = true );
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/**
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* Function FindPreviousItem
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* searches the entire schematic for the previous schematic item.
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*
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* @param aType - The type of schematic item to find.
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* @param aSheetFound - The sheet the item was found in. NULL if the previous item
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* is not found.
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* @param aLastItem - Find the previous item before aLastItem if not NULL.
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* @param aWrap - Wrap past around the beginning of the list of sheets.
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* @return If found, the previous schematic item. Otherwise, NULL.
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*/
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SCH_ITEM* FindPreviousItem( KICAD_T aType, SCH_SHEET_PATH** aSheetFound = NULL,
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SCH_ITEM* aLastItem = NULL, bool aWrap = true );
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/**
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* Function TestForRecursion
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*
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* test every SCH_SHEET_PATH in the SCH_SHEET_LIST to verify if adding the sheets stored
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* in \a aSrcSheetHierarchy to the sheet stored in \a aDestFileName will cause recursion.
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*
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* @param aSrcSheetHierarchy is the SCH_SHEET_LIST of the source sheet add to \a aDestFileName.
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* @param aDestFileName is the file name of the destination sheet for \a aSrcFileName.
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* @return true if \a aFileName will cause recursion in the sheet path. Otherwise false.
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*/
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bool TestForRecursion( const SCH_SHEET_LIST& aSrcSheetHierarchy,
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const wxString& aDestFileName ) const;
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/**
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* Function FindSheetByName
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*
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* searches the entire #SCH_SHEET_LIST for a sheet named \a aSheetName.
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*
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* @param aSheetName is the name of the sheet to find.
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* @return a pointer to the sheet named \a aSheetName if found or NULL if not found.
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*/
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SCH_SHEET* FindSheetByName( const wxString& aSheetName );
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private:
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/**
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* Function BuildSheetList
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* builds the list of sheets and their sheet path from \a aSheet.
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* If \a aSheet is the root sheet, the full sheet path and sheet list are built.
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*
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* @param aSheet is the starting sheet from which the list is built, or NULL
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* indicating that g_RootSheet should be used.
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* @throw std::bad_alloc if the memory for the sheet path list could not be allocated.
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*/
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void BuildSheetList( SCH_SHEET* aSheet );
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};
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#endif // CLASS_DRAWSHEET_PATH_H
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