kicad/include/footprint_info.h

379 lines
10 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2011 Jean-Pierre Charras, <jp.charras@wanadoo.fr>
* Copyright (C) 1992-2017 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/*
* @file footprint_info.h
*/
#ifndef FOOTPRINT_INFO_H_
#define FOOTPRINT_INFO_H_
#include <boost/ptr_container/ptr_vector.hpp>
#include <import_export.h>
#include <ki_exception.h>
#include <ki_mutex.h>
#include <kicad_string.h>
#include <sync_queue.h>
#include <atomic>
#include <functional>
#include <memory>
#define USE_FPI_LAZY 0 // 1:yes lazy, 0:no early
class FP_LIB_TABLE;
class FOOTPRINT_LIST;
class FOOTPRINT_LIST_IMPL;
class FOOTPRINT_ASYNC_LOADER;
class PROGRESS_REPORTER;
class wxTopLevelWindow;
class KIWAY;
/*
* Helper class to handle the list of footprints available in libraries. It stores
* footprint names, doc and keywords.
*
* This is a virtual class; its implementation lives in pcbnew/footprint_info_impl.cpp.
* To get instances of these classes, see FOOTPRINT_LIST::GetInstance().
*/
class APIEXPORT FOOTPRINT_INFO
{
friend bool operator<( const FOOTPRINT_INFO& item1, const FOOTPRINT_INFO& item2 );
public:
virtual ~FOOTPRINT_INFO()
{
}
// These two accessors do not have to call ensure_loaded(), because constructor
// fills in these fields:
const wxString& GetFootprintName() const
{
return m_fpname;
}
const wxString& GetNickname() const
{
return m_nickname;
}
const wxString& GetDoc()
{
ensure_loaded();
return m_doc;
}
const wxString& GetKeywords()
{
ensure_loaded();
return m_keywords;
}
unsigned GetPadCount()
{
ensure_loaded();
return m_pad_count;
}
unsigned GetUniquePadCount()
{
ensure_loaded();
return m_unique_pad_count;
}
int GetOrderNum()
{
ensure_loaded();
return m_num;
}
/**
* Test if the #FOOTPRINT_INFO object was loaded from \a aLibrary.
*
* @param aLibrary is the nickname of the library to test.
*
* @return true if the #FOOTPRINT_INFO object was loaded from \a aLibrary. Otherwise
* false.
*/
bool InLibrary( const wxString& aLibrary ) const;
protected:
void ensure_loaded()
{
if( !m_loaded )
load();
}
/// lazily load stuff not filled in by constructor. This may throw IO_ERRORS.
virtual void load() = 0;
FOOTPRINT_LIST* m_owner; ///< provides access to FP_LIB_TABLE
bool m_loaded;
wxString m_nickname; ///< library as known in FP_LIB_TABLE
wxString m_fpname; ///< Module name.
int m_num; ///< Order number in the display list.
int m_pad_count; ///< Number of pads
int m_unique_pad_count; ///< Number of unique pads
wxString m_doc; ///< Footprint description.
wxString m_keywords; ///< Footprint keywords.
};
/// FOOTPRINT object list sort function.
inline bool operator<( const FOOTPRINT_INFO& item1, const FOOTPRINT_INFO& item2 )
{
int retv = StrNumCmp( item1.m_nickname, item2.m_nickname, INT_MAX, true );
if( retv != 0 )
return retv < 0;
return StrNumCmp( item1.m_fpname, item2.m_fpname, INT_MAX, true ) < 0;
}
/**
* Holds a list of FOOTPRINT_INFO objects, along with a list of IO_ERRORs or
* PARSE_ERRORs that were thrown acquiring the FOOTPRINT_INFOs.
*
* This is a virtual class; its implementation lives in pcbnew/footprint_info_impl.cpp.
* To get instances of these classes, see FOOTPRINT_LIST::GetInstance().
*/
class APIEXPORT FOOTPRINT_LIST
{
friend class FOOTPRINT_ASYNC_LOADER;
protected:
FP_LIB_TABLE* m_lib_table; ///< no ownership
typedef std::vector<std::unique_ptr<FOOTPRINT_INFO>> FPILIST;
typedef SYNC_QUEUE<std::unique_ptr<IO_ERROR>> ERRLIST;
FPILIST m_list;
ERRLIST m_errors; ///< some can be PARSE_ERRORs also
MUTEX m_list_lock;
public:
FOOTPRINT_LIST() : m_lib_table( 0 )
{
}
virtual ~FOOTPRINT_LIST()
{
}
/**
* @return the number of items stored in list
*/
unsigned GetCount() const
{
return m_list.size();
}
/// Was forced to add this by modview_frame.cpp
const FPILIST& GetList() const
{
return m_list;
}
/**
* Get info for a module by name.
* @param aFootprintName = the footprint name inside the FOOTPRINT_INFO of interest.
* @return FOOTPRINT_INF* - the item stored in list if found
*/
FOOTPRINT_INFO* GetModuleInfo( const wxString& aFootprintName );
/**
* Get info for a module by index.
* @param aIdx = index of the given item
* @return the aIdx item in list
*/
FOOTPRINT_INFO& GetItem( unsigned aIdx )
{
return *m_list[aIdx];
}
/**
* Add aItem to list
* @param aItem = item to add
*/
void AddItem( FOOTPRINT_INFO* aItem );
unsigned GetErrorCount() const
{
return m_errors.size();
}
std::unique_ptr<IO_ERROR> PopError()
{
std::unique_ptr<IO_ERROR> error;
m_errors.pop( error );
return error;
}
/**
* Read all the footprints provided by the combination of aTable and aNickname.
*
* @param aTable defines all the libraries.
* @param aNickname is the library to read from, or if NULL means read all
* footprints from all known libraries in aTable.
* @param aProgressReporter is an optional progress reporter. ReadFootprintFiles()
* will use 2 phases within the reporter.
* @return bool - true if it ran to completion, else false if it aborted after
* some number of errors. If true, it does not mean there were no errors, check
* GetErrorCount() for that, should be zero to indicate success.
*/
virtual bool ReadFootprintFiles( FP_LIB_TABLE* aTable, const wxString* aNickname = nullptr,
PROGRESS_REPORTER* aProgressReporter = nullptr ) = 0;
void DisplayErrors( wxTopLevelWindow* aCaller = NULL );
FP_LIB_TABLE* GetTable() const
{
return m_lib_table;
}
/**
* Factory function to return a FOOTPRINT_LIST via Kiway. NOT guaranteed
* to succeed; will return null if the kiface is not available.
*
* @param aKiway - active kiway instance
*/
static FOOTPRINT_LIST* GetInstance( KIWAY& aKiway );
protected:
/**
* Launch worker threads to load footprints. Part of the
* FOOTPRINT_ASYNC_LOADER implementation.
*/
virtual void StartWorkers( FP_LIB_TABLE* aTable, wxString const* aNickname,
FOOTPRINT_ASYNC_LOADER* aLoader, unsigned aNThreads ) = 0;
/**
* Join worker threads. Part of the FOOTPRINT_ASYNC_LOADER implementation.
*/
virtual bool JoinWorkers() = 0;
/**
* Stop worker threads. Part of the FOOTPRINT_ASYNC_LOADER implementation.
*/
virtual void StopWorkers() = 0;
};
/**
* This class can be used to populate a FOOTPRINT_LIST asynchronously.
* Constructing one, calling .Start(), then waiting until it reports completion
* is equivalent to calling FOOTPRINT_LIST::ReadFootprintFiles().
*/
class APIEXPORT FOOTPRINT_ASYNC_LOADER
{
friend class FOOTPRINT_LIST;
friend class FOOTPRINT_LIST_IMPL;
FOOTPRINT_LIST* m_list;
std::function<void()> m_completion_cb;
std::string m_last_table;
bool m_started; ///< True if Start() has been called - does not reset
int m_total_libs;
public:
/**
* Construct an asynchronous loader.
*/
FOOTPRINT_ASYNC_LOADER();
/**
* Assign a FOOTPRINT_LIST to the loader. This does not take ownership of
* the list.
*/
void SetList( FOOTPRINT_LIST* aList );
/**
* Launch the worker threads.
* @param aTable defines all the libraries.
* @param aNickname is the library to read from, or if NULL means read all
* footprints from all known libraries in aTable.
* @param aNThreads is the number of worker threads.
*/
void Start( FP_LIB_TABLE* aTable, wxString const* aNickname = nullptr,
unsigned aNThreads = DEFAULT_THREADS );
/**
* Wait until the worker threads are finished, and then perform any required
* single-threaded finishing on the list. This must be called before using
* the list, even if the completion callback was used!
*
* It is safe to call this method from a thread, but it is not safe to use
* the list from ANY thread until it completes. It is recommended to call
* this from the main thread because of this.
*
* It is safe to call this multiple times, but after the first it will
* always return true.
*
* @return true if no errors occurred
*/
bool Join();
/**
* Safely stop the current process.
*/
void Abort();
/**
* Set a callback to receive notice when loading is complete.
*
* Callback MUST be threadsafe, and must be set before calling Start
* if you want to use it (it is safe not to set it at all).
*/
void SetCompletionCallback( std::function<void()> aCallback );
/**
* Return true if the given table is the same as the last table loaded.
* Useful for checking if the table has been modified and needs to be
* reloaded.
*/
bool IsSameTable( FP_LIB_TABLE* aOther );
/**
* Default number of worker threads. Determined empirically (by dickelbeck):
* More than 6 is not significantly faster, less than 6 is likely slower.
*/
static constexpr unsigned DEFAULT_THREADS = 6;
};
#endif // FOOTPRINT_INFO_H_