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/***************************************************************************
* *
* 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. *
* *
* copyright (C) 2004-2006 *
* Umbrello UML Modeller Authors <uml-devel@uml.sf.net> *
***************************************************************************/
#ifndef TOOLBARSTATEARROW_H
#define TOOLBARSTATEARROW_H
#include "toolbarstate.h"
#include "worktoolbar.h"
class QMouseEvent;
class UMLView;
class QCanvasLine;
/**
* Arrow tool for select, move and resize widgets and associations.
* Arrow tool delegates the event handling in the widgets and associations. When
* no widget nor association is being used,the arrow tool acts as a selecting
* tool that selects all the elements in the rectangle created when dragging the
* mouse.
*
* This is the default tool.
*/
class ToolBarStateArrow : public ToolBarState {
Q_OBJECT
public:
/**
* Creates a new ToolBarStateArrow.
*
* @param umlView The UMLView to use.
*/
ToolBarStateArrow(UMLView *umlView);
/**
* Destroys this ToolBarStateArrow.
*/
virtual ~ToolBarStateArrow();
/**
* Goes back to the inital state.
*/
virtual void init();
protected:
/**
* Called when the press event happened on an association.
* Delivers the event to the association.
*/
virtual void mousePressAssociation();
/**
* Called when the press event happened on a widget.
* Delivers the event to the widget.
*/
virtual void mousePressWidget();
/**
* Called when the press event happened on an empty space.
* Calls base method and, if left button was pressed, prepares the selection
* rectangle.
*/
virtual void mousePressEmpty();
/**
* Called when the release event happened on an association.
* Delivers the event to the association.
*/
virtual void mouseReleaseAssociation();
/**
* Called when the release event happened on a widget.
* Delivers the event to the widget.
*/
virtual void mouseReleaseWidget();
/**
* Called when the release event happened on an empty space.
* If selection rectangle is active, it is cleared. Else, if the right
* button was released, it shows the pop up menu for the diagram.
*/
virtual void mouseReleaseEmpty();
/**
* Called when the double click event happened on an association.
* Delivers the event to the association.
*/
virtual void mouseDoubleClickAssociation();
/**
* Called when the double click event happened on a widget.
* Delivers the event to the widget.
*/
virtual void mouseDoubleClickWidget();
/**
* Called when the move event happened when an association is
* currently available.
* Delivers the event to the association.
*/
virtual void mouseMoveAssociation();
/**
* Called when the move event happened when a widget is
* currently available.
* Delivers the event to the widget.
*/
virtual void mouseMoveWidget();
/**
* Called when the move event happened when no association nor
* widget are currently available.
* Updates the selection rectangle to the new position and selectes all the
* widgets in the rectangle.
*
* @todo Fix selection
*/
virtual void mouseMoveEmpty();
/**
* Sets the widget currently in use.
* It ensures that the widget is only set if there is no other widget set
* already.
* It avoids things like moving a big widget over a little one, clicking
* right button to cancel the movement and the little widget getting the
* event, thus not cancelling the movement in the big widget.
*/
virtual void setCurrentWidget(UMLWidget* currentWidget);
/**
* Overriden from base class to do nothing, as arrow is the default tool.
*/
virtual void changeTool();
/**
* The selection rectangle that contains the four lines of its borders.
*/
QPtrList<QCanvasLine> m_selectionRect;
/**
* The start position of the selection rectangle.
*/
QPoint m_startPosition;
};
#endif //TOOLBARSTATEARROW_H
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