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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 CERN
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
*
* 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
*/
#ifndef __TOOL_BASE_H
#define __TOOL_BASE_H
#include <cassert>
#include <base_struct.h> // for KICAD_T
#include <tool/tool_event.h>
#include <tool/tool_settings.h>
#include <tool/delegate.h>
class EDA_ITEM;
class TOOL_MANAGER;
namespace KIGFX
{
class VIEW;
class VIEW_CONTROLS;
};
enum TOOL_TYPE
{
///> Tool that interacts with the user
INTERACTIVE = 0x01,
///> Tool that runs in the background without any user intervention
BATCH = 0x02
};
/// Unique identifier for tools
typedef int TOOL_ID;
typedef DELEGATE<int, const TOOL_EVENT&> TOOL_STATE_FUNC;
/**
* Class TOOL_BASE
*
* Base abstract interface for all kinds of tools.
*/
class TOOL_BASE
{
public:
TOOL_BASE( TOOL_TYPE aType, TOOL_ID aId, const std::string& aName = std::string( "" ) ) :
m_type( aType ),
m_toolId( aId ),
m_toolName( aName ),
m_toolMgr( NULL ) {};
virtual ~TOOL_BASE() {};
///> Determines the reason of reset for a tool
enum RESET_REASON
{
RUN, ///< Tool is invoked after being inactive
MODEL_RELOAD, ///< Model changes
GAL_SWITCH ///< Rendering engine changes
};
/**
* Function Init()
* Init() is called once upon a registration of the tool.
*
* @return True if the initialization went fine, false - otherwise.
*/
virtual bool Init()
{
return true;
}
/**
* Function Reset()
* Brings the tool to a known, initial state. If the tool claimed anything from
* the model or the view, it must release it when its reset.
* @param aReason contains information about the reason of tool reset.
*/
virtual void Reset( RESET_REASON aReason ) = 0;
/**
* Function GetType()
* Returns the type of the tool.
* @return The type of the tool.
*/
TOOL_TYPE GetType() const
{
return m_type;
}
/**
* Function GetId()
* Returns the unique identifier of the tool. The identifier is set by an instance of
* TOOL_MANAGER.
* @return Identifier of the tool.
*/
TOOL_ID GetId() const
{
return m_toolId;
}
/**
* Function GetName()
* Returns the name of the tool. Tool names are expected to obey the format:
* application.ToolName (eg. pcbnew.InteractiveSelection).
* @return The name of the tool.
*/
const std::string& GetName() const
{
return m_toolName;
}
/**
* Function GetManager()
* Returns the instance of TOOL_MANAGER that takes care of the tool.
* @return Instance of the TOOL_MANAGER. If there is no TOOL_MANAGER associated, it returns
* NULL.
*/
TOOL_MANAGER* GetManager() const
{
return m_toolMgr;
}
/**
* Function SetTransitions()
* This method is meant to be overridden in order to specify handlers for events. It is called
* every time tool is reset or finished.
*/
virtual void SetTransitions() {};
TOOL_SETTINGS& GetSettings();
protected:
friend class TOOL_MANAGER;
friend class TOOL_SETTINGS;
/**
* Function attachManager()
*
* Sets the TOOL_MANAGER the tool will belong to.
* Called by TOOL_MANAGER::RegisterTool()
*/
void attachManager( TOOL_MANAGER* aManager );
/**
* Function getView()
*
* Returns the instance of VIEW object used in the application. It allows tools to draw.
* @return The instance of VIEW.
*/
KIGFX::VIEW* getView() const;
/**
* Function getViewControls()
*
* Returns the instance of VIEW_CONTROLS object used in the application. It allows tools to
* read & modify user input and its settings (eg. show cursor, enable snapping to grid, etc.)
* @return The instance of VIEW_CONTROLS.
*/
KIGFX::VIEW_CONTROLS* getViewControls() const;
/**
* Function getEditFrame()
*
* Returns the application window object, casted to requested user type.
*/
template <typename T>
T* getEditFrame() const
{
return static_cast<T*>( getEditFrameInt() );
}
/**
* Function getModel()
*
* Returns the model object if it matches the requested type.
*/
template <typename T>
T* getModel() const
{
EDA_ITEM* m = getModelInt();
return static_cast<T*>( m );
}
///> Stores the type of the tool.
TOOL_TYPE m_type;
///> Unique identifier for the tool, assigned by a TOOL_MANAGER instance.
TOOL_ID m_toolId;
///> Name of the tool. Names are expected to obey the format application.ToolName
///> (eg. pcbnew.InteractiveSelection).
std::string m_toolName;
TOOL_MANAGER* m_toolMgr;
TOOL_SETTINGS m_toolSettings;
private:
// hide the implementation to avoid spreading half of
// kicad and wxWidgets headers to the tools that may not need them at all!
EDA_ITEM* getModelInt() const;
wxWindow* getEditFrameInt() const;
};
#endif
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