372 lines
10 KiB
C++
372 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) 2011 Jean-Pierre Charras, <jp.charras@wanadoo.fr>
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* Copyright (C) 1992-2020 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 footprint_info.h
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*/
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#ifndef FOOTPRINT_INFO_H_
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#define FOOTPRINT_INFO_H_
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#include <boost/ptr_container/ptr_vector.hpp>
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#include <import_export.h>
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#include <ki_exception.h>
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#include <sync_queue.h>
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#include <lib_tree_item.h>
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#include <atomic>
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#include <functional>
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#include <memory>
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class FP_LIB_TABLE;
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class FOOTPRINT_LIST;
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class FOOTPRINT_LIST_IMPL;
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class FOOTPRINT_ASYNC_LOADER;
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class PROGRESS_REPORTER;
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class wxTopLevelWindow;
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class KIWAY;
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class wxTextFile;
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/*
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* Helper class to handle the list of footprints available in libraries. It stores
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* footprint names, doc and keywords.
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*
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* This is a virtual class; its implementation lives in pcbnew/footprint_info_impl.cpp.
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* To get instances of these classes, see FOOTPRINT_LIST::GetInstance().
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*/
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class APIEXPORT FOOTPRINT_INFO : public LIB_TREE_ITEM
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{
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public:
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virtual ~FOOTPRINT_INFO()
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{
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}
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// These two accessors do not have to call ensure_loaded(), because constructor
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// fills in these fields:
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const wxString& GetFootprintName() const { return m_fpname; }
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wxString GetLibNickname() const override { return m_nickname; }
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wxString GetName() const override { return m_fpname; }
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LIB_ID GetLibId() const override
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{
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return LIB_ID( m_nickname, m_fpname );
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}
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wxString GetDescription() override
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{
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ensure_loaded();
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return m_doc;
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}
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wxString GetKeywords()
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{
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ensure_loaded();
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return m_keywords;
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}
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wxString GetSearchText() override
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{
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// Matches are scored by offset from front of string, so inclusion of this spacer
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// discounts matches found after it.
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static const wxString discount( wxT( " " ) );
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return GetKeywords() + discount + GetDescription();
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}
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unsigned GetPadCount()
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{
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ensure_loaded();
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return m_pad_count;
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}
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unsigned GetUniquePadCount()
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{
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ensure_loaded();
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return m_unique_pad_count;
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}
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int GetOrderNum()
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{
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ensure_loaded();
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return m_num;
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}
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/**
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* Test if the #FOOTPRINT_INFO object was loaded from \a aLibrary.
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*
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* @param aLibrary is the nickname of the library to test.
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*
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* @return true if the #FOOTPRINT_INFO object was loaded from \a aLibrary. Otherwise
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* false.
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*/
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bool InLibrary( const wxString& aLibrary ) const;
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/**
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* Less than comparison operator, intended for sorting FOOTPRINT_INFO objects
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*/
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friend bool operator<( const FOOTPRINT_INFO& lhs, const FOOTPRINT_INFO& rhs );
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protected:
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void ensure_loaded()
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{
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if( !m_loaded )
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load();
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}
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/// lazily load stuff not filled in by constructor. This may throw IO_ERRORS.
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virtual void load() { };
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FOOTPRINT_LIST* m_owner; ///< provides access to FP_LIB_TABLE
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bool m_loaded;
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wxString m_nickname; ///< library as known in FP_LIB_TABLE
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wxString m_fpname; ///< Module name.
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int m_num; ///< Order number in the display list.
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unsigned m_pad_count; ///< Number of pads
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unsigned m_unique_pad_count; ///< Number of unique pads
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wxString m_doc; ///< Footprint description.
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wxString m_keywords; ///< Footprint keywords.
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};
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/**
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* Holds a list of #FOOTPRINT_INFO objects, along with a list of IO_ERRORs or
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* PARSE_ERRORs that were thrown acquiring the FOOTPRINT_INFOs.
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*
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* This is a virtual class; its implementation lives in pcbnew/footprint_info_impl.cpp.
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* To get instances of these classes, see FOOTPRINT_LIST::GetInstance().
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*/
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class APIEXPORT FOOTPRINT_LIST
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{
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public:
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typedef std::vector<std::unique_ptr<FOOTPRINT_INFO>> FPILIST;
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typedef SYNC_QUEUE<std::unique_ptr<IO_ERROR>> ERRLIST;
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FOOTPRINT_LIST() : m_lib_table( nullptr )
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{
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}
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virtual ~FOOTPRINT_LIST()
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{
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}
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virtual void WriteCacheToFile( const wxString& aFilePath ) {};
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virtual void ReadCacheFromFile( const wxString& aFilePath ){};
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/**
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* @return the number of items stored in list
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*/
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unsigned GetCount() const
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{
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return m_list.size();
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}
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/// Was forced to add this by modview_frame.cpp
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const FPILIST& GetList() const
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{
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return m_list;
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}
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/**
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* @return Clears the footprint info cache
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*/
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void Clear()
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{
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m_list.clear();
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}
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/**
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* Get info for a footprint by id.
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*/
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FOOTPRINT_INFO* GetFootprintInfo( const wxString& aFootprintName );
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/**
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* Get info for a footprint by libNickname/footprintName
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*/
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FOOTPRINT_INFO* GetFootprintInfo( const wxString& aLibNickname,
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const wxString& aFootprintName );
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/**
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* Get info for a footprint by index.
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*
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* @param aIdx index of the given item.
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* @return the aIdx item in list.
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*/
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FOOTPRINT_INFO& GetItem( unsigned aIdx ) const
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{
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return *m_list[aIdx];
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}
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unsigned GetErrorCount() const
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{
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return m_errors.size();
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}
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std::unique_ptr<IO_ERROR> PopError()
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{
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std::unique_ptr<IO_ERROR> error;
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m_errors.pop( error );
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return error;
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}
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/**
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* Read all the footprints provided by the combination of aTable and aNickname.
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*
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* @param aTable defines all the libraries.
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* @param aNickname is the library to read from, or if NULL means read all footprints
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* from all known libraries in aTable.
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* @param aProgressReporter is an optional progress reporter. ReadFootprintFiles() will
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* use 2 phases within the reporter.
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* @return true if it ran to completion, else false if it aborted after some number of
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* errors. If true, it does not mean there were no errors, check GetErrorCount()
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* for that, should be zero to indicate success.
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*/
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virtual bool ReadFootprintFiles( FP_LIB_TABLE* aTable, const wxString* aNickname = nullptr,
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PROGRESS_REPORTER* aProgressReporter = nullptr ) = 0;
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void DisplayErrors( wxTopLevelWindow* aCaller = NULL );
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FP_LIB_TABLE* GetTable() const
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{
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return m_lib_table;
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}
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/**
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* Factory function to return a #FOOTPRINT_LIST via Kiway.
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*
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* This is not guaranteed to succeed and will return null if the kiface is not available.
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*
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* @param aKiway active kiway instance.
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*/
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static FOOTPRINT_LIST* GetInstance( KIWAY& aKiway );
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protected:
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/**
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* Launch worker threads to load footprints. Part of the #FOOTPRINT_ASYNC_LOADER
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* implementation.
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*/
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virtual void startWorkers( FP_LIB_TABLE* aTable, wxString const* aNickname,
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FOOTPRINT_ASYNC_LOADER* aLoader, unsigned aNThreads ) = 0;
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/**
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* Join worker threads. Part of the FOOTPRINT_ASYNC_LOADER implementation.
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*/
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virtual bool joinWorkers() = 0;
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/**
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* Stop worker threads. Part of the FOOTPRINT_ASYNC_LOADER implementation.
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*/
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virtual void stopWorkers() = 0;
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private:
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friend class FOOTPRINT_ASYNC_LOADER;
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protected:
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FP_LIB_TABLE* m_lib_table; ///< no ownership
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FPILIST m_list;
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ERRLIST m_errors; ///< some can be PARSE_ERRORs also
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};
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/**
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* Object used to populate a #FOOTPRINT_LIST asynchronously.
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*
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* Construct one, calling #Start(), and then waiting until it reports completion. This is
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* equivalent to calling #FOOTPRINT_LIST::ReadFootprintFiles().
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*/
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class APIEXPORT FOOTPRINT_ASYNC_LOADER
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{
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public:
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/**
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* Construct an asynchronous loader.
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*/
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FOOTPRINT_ASYNC_LOADER();
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~FOOTPRINT_ASYNC_LOADER();
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/**
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* Assign a FOOTPRINT_LIST to the loader. This does not take ownership of
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* the list.
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*/
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void SetList( FOOTPRINT_LIST* aList );
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/**
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* Launch the worker threads.
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*
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* @param aTable defines all the libraries.
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* @param aNickname is the library to read from, or if NULL means read all footprints from
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* all known libraries in \a aTable.
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* @param aNThreads is the number of worker threads.
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*/
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void Start( FP_LIB_TABLE* aTable, wxString const* aNickname = nullptr,
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unsigned aNThreads = DEFAULT_THREADS );
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/**
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* Wait until the worker threads are finished, and then perform any required
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* single-threaded finishing on the list. This must be called before using
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* the list, even if the completion callback was used!
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*
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* It is safe to call this method from a thread, but it is not safe to use
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* the list from ANY thread until it completes. It is recommended to call
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* this from the main thread because of this.
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*
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* It is safe to call this multiple times, but after the first it will
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* always return true.
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*
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* @return true if no errors occurred
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*/
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bool Join();
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/**
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* Safely stop the current process.
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*/
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void Abort();
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private:
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/**
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* Default number of worker threads. Determined empirically (by dickelbeck):
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* More than 6 is not significantly faster, less than 6 is likely slower.
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*/
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static constexpr unsigned DEFAULT_THREADS = 6;
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friend class FOOTPRINT_LIST;
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friend class FOOTPRINT_LIST_IMPL;
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FOOTPRINT_LIST* m_list;
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std::string m_last_table;
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int m_total_libs;
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};
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#endif // FOOTPRINT_INFO_H_
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