David Robillard
e0aaed6d65
All #include statements that include a header that is a part of a library bundled with ardour MUST use quotes, not angle brackets. Do this: #include "ardour/types.h" NOT this: #include <ardour/types.h> Rationale: This is best practice in general, to ensure we include the local version and not the system version. That quotes mean "local" (in some sense) and angle brackets mean "system" (in some sense) is a ubiquitous convention and IIRC right in the C spec somewhere. More pragmatically, this is required by (my) waf (stuff) for dependencies to work correctly. That is: !!! FAILURE TO DO THIS CAN RESULT IN BROKEN BUILDS !!! Failure to comply is punishable by death by torture. :) P.S. It's not that dramatic in all cases, but this (in combination with some GCC flags specific to the include type) is the best way I have found to be absolutely 100% positive the local ones are being used (and we definitely want to be absolutely 100% positive on that one). git-svn-id: svn://localhost/ardour2/branches/3.0@4655 d708f5d6-7413-0410-9779-e7cbd77b26cf
123 lines
3.0 KiB
C++
123 lines
3.0 KiB
C++
/*
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Copyright (C) 2002 Brett Viren & Paul Davis
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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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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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __lib_pbd_undo_h__
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#define __lib_pbd_undo_h__
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#include <string>
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#include <list>
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#include <map>
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#include <sigc++/slot.h>
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#include <sigc++/bind.h>
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#include <sys/time.h>
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#include "pbd/command.h"
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#include "pbd/shiva.h"
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typedef sigc::slot<void> UndoAction;
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class UndoTransaction : public Command
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{
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public:
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UndoTransaction ();
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UndoTransaction (const UndoTransaction&);
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UndoTransaction& operator= (const UndoTransaction&);
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void clear ();
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bool empty() const;
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bool clearing () const { return _clearing; }
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void add_command (Command* const);
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void remove_command (Command* const);
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void operator() ();
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void undo();
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void redo();
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XMLNode &get_state();
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void set_timestamp (struct timeval &t) {
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_timestamp = t;
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}
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const struct timeval& timestamp() const {
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return _timestamp;
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}
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private:
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std::list<Command*> actions;
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std::list<PBD::ProxyShiva<Command,UndoTransaction>*> shivas;
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struct timeval _timestamp;
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bool _clearing;
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friend void command_death (UndoTransaction*, Command *);
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friend class UndoHistory;
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~UndoTransaction ();
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void about_to_explicitly_delete ();
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};
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class UndoHistory : public sigc::trackable
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{
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public:
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UndoHistory();
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~UndoHistory() {}
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void add (UndoTransaction* ut);
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void undo (unsigned int n);
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void redo (unsigned int n);
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unsigned long undo_depth() const { return UndoList.size(); }
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unsigned long redo_depth() const { return RedoList.size(); }
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std::string next_undo() const { return (UndoList.empty() ? std::string() : UndoList.back()->name()); }
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std::string next_redo() const { return (RedoList.empty() ? std::string() : RedoList.back()->name()); }
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void clear ();
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void clear_undo ();
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void clear_redo ();
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/* returns all or part of the history.
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If depth==0 it returns just the top
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node. If depth<0, it returns everything.
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If depth>0, it returns state for that
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many elements of the history, or
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the full history, whichever is smaller.
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*/
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XMLNode &get_state(int32_t depth = 0);
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void save_state();
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void set_depth (uint32_t);
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sigc::signal<void> Changed;
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private:
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bool _clearing;
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uint32_t _depth;
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std::list<UndoTransaction*> UndoList;
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std::list<UndoTransaction*> RedoList;
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void remove (UndoTransaction*);
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};
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#endif /* __lib_pbd_undo_h__ */
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