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kicad/include/tool/tool_manager.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2013 CERN
* Copyright (C) 2020 KiCad Developers, see AUTHORS.txt for contributors.
*
* @author Tomasz Wlostowski <tomasz.wlostowski@cern.ch>
* @author Maciej Suminski <maciej.suminski@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_MANAGER_H
#define __TOOL_MANAGER_H
#include <typeinfo>
#include <map>
#include <list>
#include <stack>
#include <tool/tool_base.h>
#include <tool/tool_event.h>
#include <view/view_controls.h>
class TOOLS_HOLDER;
class TOOL_ACTION;
class TOOL_BASE;
class ACTION_MANAGER;
class ACTION_MENU;
class APP_SETTINGS_BASE;
/**
* Master controller class:
* - registers editing tools
* - pumps UI events to tools requesting them
* - manages tool state machines (transitions and wait requests)
*/
class TOOL_MANAGER
{
private:
struct TOOL_STATE;
public:
TOOL_MANAGER();
~TOOL_MANAGER();
// Helper typedefs
typedef std::map<TOOL_BASE*, TOOL_STATE*> TOOL_STATE_MAP;
typedef std::map<std::string, TOOL_STATE*> NAME_STATE_MAP;
typedef std::map<TOOL_ID, TOOL_STATE*> ID_STATE_MAP;
typedef std::list<TOOL_ID> ID_LIST;
/**
* Generates a unique ID from for a tool with given name.
*/
static TOOL_ID MakeToolId( const std::string& aToolName );
/**
* Add a tool to the manager set and sets it up. Called once for each tool during
* application initialization.
*
* @param aTool: tool to be added. Ownership is transferred.
*/
void RegisterTool( TOOL_BASE* aTool );
/**
* Call a tool by sending a tool activation event to tool of given ID.
*
* @param aToolId is the ID number of the requested tool.
* @return True if the requested tool was invoked successfully.
*/
bool InvokeTool( TOOL_ID aToolId );
/**
* Call a tool by sending a tool activation event to tool of given name.
*
* @param aToolName is the name of the requested tool.
* @return True if the requested tool was invoked successfully.
*/
bool InvokeTool( const std::string& aToolName );
/**
* Shutdown all tools with a currently registered event loop in this tool manager
* by waking them up with a null event.
*/
void ShutdownAllTools();
/**
* Shutdown the specified tool by waking it up with a null event to terminate
* the processing loop.
*
* @param aTool is the tool to shutdown
*/
void ShutdownTool( TOOL_BASE* aTool );
/**
* Shutdown the specified tool by waking it up with a null event to terminate
* the processing loop.
*
* @param aToolId is the ID of the tool to shutdown
*/
void ShutdownTool( TOOL_ID aToolId );
/**
* Shutdown the specified tool by waking it up with a null event to terminate
* the processing loop.
*
* @param aToolName is name of the tool to shutdown
*/
void ShutdownTool( const std::string& aToolName );
/**
* Run the specified action.
*
* The common format for action names is "application.ToolName.Action".
*
* @param aActionName is the name of action to be invoked.
* @param aNow decides if the action has to be run immediately or after the current coroutine
* is preemptied.
* @param aParam is an optional parameter that might be used by the invoked action. Its meaning
* depends on the action.
* @return False if the action was not found.
*/
template<typename T>
bool RunAction( const std::string& aActionName, bool aNow = false, T aParam = NULL )
{
return RunAction( aActionName, aNow, reinterpret_cast<void*>( aParam ) );
}
bool RunAction( const std::string& aActionName, bool aNow, void* aParam );
bool RunAction( const std::string& aActionName, bool aNow = false )
{
return RunAction( aActionName, aNow, (void*) NULL );
}
/**
* Run the specified action.
*
* This function will only return if the action has been handled when the action is run
* immediately (aNow = true), otherwise it will always return false.
*
* @param aAction is the action to be invoked.
* @param aNow decides if the action has to be run immediately or after the current coroutine
* is preemptied.
* @param aParam is an optional parameter that might be used by the invoked action. Its meaning
* depends on the action.
* @return True if the action was handled immediately
*/
template <typename T>
bool RunAction( const TOOL_ACTION& aAction, bool aNow = false, T aParam = NULL )
{
return RunAction( aAction, aNow, reinterpret_cast<void*>( aParam ) );
}
bool RunAction( const TOOL_ACTION& aAction, bool aNow, void* aParam );
bool RunAction( const TOOL_ACTION& aAction, bool aNow = false )
{
return RunAction( aAction, aNow, (void*) NULL );
}
/**
* Send a cancel event to the tool currently at the top of the tool stack.
*/
void CancelTool();
/**
* "Prime" a tool by sending a cursor left-click event with the mouse position set
* to the passed in position.
*
* @param aPosition is the mouse position to use in the event
*/
void PrimeTool( const VECTOR2D& aPosition );
///< @copydoc ACTION_MANAGER::GetHotKey()
int GetHotKey( const TOOL_ACTION& aAction ) const;
ACTION_MANAGER* GetActionManager() const { return m_actionMgr; }
/**
* Search for a tool with given ID.
*
* @param aId is the ID number of the requested tool.
* @return Pointer to the requested tool or NULL in case of failure.
*/
TOOL_BASE* FindTool( int aId ) const;
/**
* Search for a tool with given name.
*
* @param aName is the name of the requested tool.
* @return Pointer to the requested tool or NULL in case of failure.
*/
TOOL_BASE* FindTool( const std::string& aName ) const;
/*
* Return the tool of given type or nullptr if there is no such tool registered.
*/
template<typename T>
T* GetTool()
{
std::map<const char*, TOOL_BASE*>::iterator tool = m_toolTypes.find( typeid( T ).name() );
if( tool != m_toolTypes.end() )
return static_cast<T*>( tool->second );
return nullptr;
}
/*
* Return all registered tools.
*/
std::vector<TOOL_BASE*> Tools() { return m_toolOrder; }
/**
* Deactivate the currently active tool.
*/
void DeactivateTool();
/**
* Return true if a tool with given id is active (executing)
*/
bool IsToolActive( TOOL_ID aId ) const;
/**
* Reset all tools (i.e. calls their Reset() method).
*/
void ResetTools( TOOL_BASE::RESET_REASON aReason );
/**
* Initializes all registered tools.
*
* If a tool fails during the initialization, it is deactivated and becomes unavailable
* for further use. Initialization should be done only once.
*/
void InitTools();
/**
* Propagate an event to tools that requested events of matching type(s).
*
* @param aEvent is the event to be processed.
* @return true if the event is a managed hotkey
*/
bool ProcessEvent( const TOOL_EVENT& aEvent );
/**
* Put an event to the event queue to be processed at the end of event processing cycle.
*
* @param aEvent is the event to be put into the queue.
*/
void PostEvent( const TOOL_EVENT& aEvent );
/**
* Set the work environment (model, view, view controls and the parent window).
*
* These are made available to the tool. Called by the parent frame when it is set up.
*/
void SetEnvironment( EDA_ITEM* aModel, KIGFX::VIEW* aView,
KIGFX::VIEW_CONTROLS* aViewControls, APP_SETTINGS_BASE* aSettings,
TOOLS_HOLDER* aFrame );
/*
* Accessors for the environment objects (view, model, etc.)
*/
KIGFX::VIEW* GetView() const { return m_view; }
KIGFX::VIEW_CONTROLS* GetViewControls() const { return m_viewControls; }
VECTOR2D GetMousePosition() const;
VECTOR2D GetCursorPosition() const;
EDA_ITEM* GetModel() const { return m_model; }
APP_SETTINGS_BASE* GetSettings() const { return m_settings; }
TOOLS_HOLDER* GetToolHolder() const { return m_frame; }
/**
* Return id of the tool that is on the top of the active tools stack (was invoked the
* most recently).
*
* @return Id of the currently used tool.
*/
inline int GetCurrentToolId() const
{
return m_activeTools.empty() ? -1 : m_activeTools.front();
}
/**
* Return the tool that is on the top of the active tools stack (was invoked the most
* recently).
*
* @return Pointer to the currently used tool.
*/
inline TOOL_BASE* GetCurrentTool() const
{
return FindTool( GetCurrentToolId() );
}
/**
* Return the #TOOL_STATE object representing the state of the active tool. If there are no
* tools active, it returns nullptr.
*/
TOOL_STATE* GetCurrentToolState() const
{
auto it = m_toolIdIndex.find( GetCurrentToolId() );
return ( it != m_toolIdIndex.end() ) ? it->second : nullptr;
}
/**
* Return priority of a given tool.
*
* Higher number means that the tool is closer to the beginning of the active tools
* queue (i.e. receives events earlier, tools with lower priority receive events later).
*
* @param aToolId is the id of queried tool.
* @return The priority of a given tool. If returned number is negative, then it means that
* the tool id is invalid or the tool is not active.
*/
int GetPriority( int aToolId ) const;
/**
* Define a state transition.
*
* The events that cause a given handler method in the tool to be called. Called by
* TOOL_INTERACTIVE::Go(). May be called from a coroutine context.
*/
void ScheduleNextState( TOOL_BASE* aTool, TOOL_STATE_FUNC& aHandler,
const TOOL_EVENT_LIST& aConditions );
/**
* Clear the state transition map for a tool.
*
* @param aTool is the tool that should have the transition map cleared.
*/
void ClearTransitions( TOOL_BASE* aTool );
void RunMainStack( TOOL_BASE* aTool, std::function<void()> aFunc );
/**
* Update the status bar and synchronizes toolbars.
*/
void UpdateUI( const TOOL_EVENT& aEvent );
/**
* Pause execution of a given tool until one or more events matching aConditions arrives.
*
* The pause/resume operation is done through #COROUTINE object. Called only from coroutines.
*/
TOOL_EVENT* ScheduleWait( TOOL_BASE* aTool, const TOOL_EVENT_LIST& aConditions );
/**
* Set behavior of the tool's context popup menu.
*
* @param aTool is the parent tool.
* @param aMenu is the menu structure, defined by the tool.
* @param aTrigger determines when the menu is activated:
* CMENU_NOW: opens the menu right now
* CMENU_BUTTON: opens the menu when RMB is pressed
* CMENU_OFF: menu is disabled.
* May be called from a coroutine context.
*/
void ScheduleContextMenu( TOOL_BASE* aTool, ACTION_MENU* aMenu, CONTEXT_MENU_TRIGGER aTrigger );
/**
* Store information to the system clipboard.
*
* @param aText is the information to be stored, expected UTF8 encoding. The text will be
* stored as Unicode string (not stored as UTF8 string).
* @return False if error occurred.
*/
bool SaveClipboard( const std::string& aTextUTF8 );
/**
* Return the information currently stored in the system clipboard.
*
* If data stored in the clipboard is in non-text format, empty string is returned.
*
* @note The clipboard is expected containing Unicode chars, not only ASCII7 chars.
* The returned string is UTF8 encoded
*/
std::string GetClipboardUTF8() const;
/**
* Return the view controls settings for the current tool or the general settings if there is
* no active tool.
*/
const KIGFX::VC_SETTINGS& GetCurrentToolVC() const;
/**
* True while processing a context menu.
*/
bool IsContextMenuActive() const
{
return m_menuActive;
}
/**
* Disable mouse warping after the current context menu is closed.
*
* This must be called before invoking each context menu. It's a good idea to call this
* from non-modal dialogs (e.g. DRC window).
*/
void VetoContextMenuMouseWarp()
{
m_warpMouseAfterContextMenu = false;
}
/**
* Handle context menu related events.
*/
void DispatchContextMenu( const TOOL_EVENT& aEvent );
/**
* Handle specific events, that are intended for TOOL_MANAGER rather than tools.
*
* @param aEvent is the event to be processed.
* @return true if the event was processed and should not go any further.
*/
bool DispatchHotKey( const TOOL_EVENT& aEvent );
VECTOR2D GetMenuCursorPos() const
{
return m_menuCursor;
}
private:
typedef std::pair<TOOL_EVENT_LIST, TOOL_STATE_FUNC> TRANSITION;
/**
* Pass an event at first to the active tools, then to all others.
*/
bool dispatchInternal( TOOL_EVENT& aEvent );
/**
* Check if it is a valid activation event and invokes a proper tool.
*
* @param aEvent is an event to be tested.
* @return True if a tool was invoked, false otherwise.
*/
bool dispatchActivation( const TOOL_EVENT& aEvent );
/**
* Invoke a tool by sending a proper event (in contrary to runTool, which makes the tool run
* for real).
*
* @param aTool is the tool to be invoked.
*/
bool invokeTool( TOOL_BASE* aTool );
/**
* Make a tool active, so it can receive events and react to them.
*
* The activated tool is pushed on the active tools stack, so the last activated tool
* receives events first.
*
* @param aTool is the tool to be run.
*/
bool runTool( TOOL_BASE* aTool );
/**
* Deactivate a tool and does the necessary clean up.
*
* @param aState is the state variable of the tool to be stopped.
* @return m_activeTools iterator. If the tool has been completely deactivated, it points
* to the next active tool on the list. Otherwise it is an iterator pointing to
* \a aState.
*/
ID_LIST::iterator finishTool( TOOL_STATE* aState );
/**
* Return information about a tool registration status.
*
* @param aTool is the tool to be checked.
* @return true if the tool is in the registered tools list, false otherwise.
*/
bool isRegistered( TOOL_BASE* aTool ) const
{
return m_toolState.count( aTool ) > 0;
}
/**
* Return information about a tool activation status.
*
* @param aTool is the tool to be checked.
* @return True if the tool is on the active tools stack, false otherwise.
*/
bool isActive( TOOL_BASE* aTool ) const;
/**
* Save the #VIEW_CONTROLS settings to the tool state object.
*
* If #VIEW_CONTROLS settings are affected by #TOOL_MANAGER, the original settings are saved.
*/
void saveViewControls( TOOL_STATE* aState );
/**
* Apply #VIEW_CONTROLS settings stored in a #TOOL_STATE object.
*/
void applyViewControls( const TOOL_STATE* aState );
/**
* Main function for event processing.
*
* @return true if a hotkey was handled.
*/
bool processEvent( const TOOL_EVENT& aEvent );
/**
* Save the previous active state and sets a new one.
*
* @param aState is the new active state. Might be null to indicate there is no new
* active state.
*/
void setActiveState( TOOL_STATE* aState );
///< List of tools in the order they were registered
std::vector<TOOL_BASE*> m_toolOrder;
///< Index of registered tools current states, associated by tools' objects.
TOOL_STATE_MAP m_toolState;
///< Index of the registered tools current states, associated by tools' names.
NAME_STATE_MAP m_toolNameIndex;
///< Index of the registered tools current states, associated by tools' ID numbers.
ID_STATE_MAP m_toolIdIndex;
///< Index of the registered tools to easily lookup by their type.
std::map<const char*, TOOL_BASE*> m_toolTypes;
///< Stack of the active tools
ID_LIST m_activeTools;
///< Instance of ACTION_MANAGER that handles TOOL_ACTIONs
ACTION_MANAGER* m_actionMgr;
///< Original cursor position, if overridden by the context menu handler
std::map<TOOL_ID, std::optional<VECTOR2D>> m_cursorSettings;
EDA_ITEM* m_model;
KIGFX::VIEW* m_view;
KIGFX::VIEW_CONTROLS* m_viewControls;
TOOLS_HOLDER* m_frame;
APP_SETTINGS_BASE* m_settings;
///< Queue that stores events to be processed at the end of the event processing cycle.
std::list<TOOL_EVENT> m_eventQueue;
///< Right click context menu position.
VECTOR2D m_menuCursor;
bool m_warpMouseAfterContextMenu;
///< Flag indicating whether a context menu is currently displayed.
bool m_menuActive;
///< Tool currently displaying a popup menu. It is negative when there is no menu displayed.
TOOL_ID m_menuOwner;
///< Pointer to the state object corresponding to the currently executed tool.
TOOL_STATE* m_activeState;
///< True if the tool manager is shutting down (don't process additional events)
bool m_shuttingDown;
};
#endif // __TOOL_MANAGER_H
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