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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) 2006 *
* Umbrello UML Modeller Authors <uml-devel@uml.sf.net> *
***************************************************************************/
#ifndef OBJECTWIDGETCONTROLLER_H
#define OBJECTWIDGETCONTROLLER_H
#include "umlwidgetcontroller.h"
class ObjectWidget;
/**
* Controller for ObjectWidget.
*
* When moving an ObjectWidget, it is only moved along X axis. Y axis movement
* is always ignored.
* So, if the ObjectWidget is being moved as part of a selection and that
* selection is moved in X and/or Y axis, the ObjectWidget will only move in X axis.
* Also, when constraining the move of the selection because the receiver of
* mouse move events is an ObjectWidget, all the widgets are moved only in X axis.
*
* Only horizontal resize is allowed for ObjectWidget. Cursor is set to reflect this.
*
* @author Umbrello UML Modeller Authors <uml-devel@lists.sourceforge.net>
*/
class ObjectWidgetController : public UMLWidgetController {
public:
/**
* Constructor for ObjectWidgetController.
*
* @param objectWidget The object widget which uses the controller.
*/
ObjectWidgetController(ObjectWidget *objectWidget);
/**
* Destructor for ObjectWidgetController.
*/
virtual ~ObjectWidgetController();
protected:
/**
* Overriden from UMLWidgetController.
* Returns the cursor to be shown when resizing the widget.
* The cursor shown is KCursor::sizeHorCursor().
*
* @return The cursor to be shown when resizing the widget.
*/
virtual TQCursor getResizeCursor();
/**
* Overriden from UMLWidgetController.
* Resizes the width of the object widget.
* Object widgets can only be resized horizontally, so height isn't modified.
*
* @param newW The new width for the widget.
* @param newH The new height for the widget (isn't used).
*/
virtual void resizeWidget(int newW, int newH);
/**
* Overriden from UMLWidgetController.
* Moves the widget to a new position using the difference between the
* current position and the new position.
* Y position is ignored, and widget is only moved along X axis.
*
* @param diffX The difference between current X position and new X position.
* @param diffY The difference between current Y position and new Y position
* (isn't used).
*/
virtual void moveWidgetBy(int diffX, int diffY);
/**
* Overriden from UMLWidgetController.
* Modifies the value of the diffX and diffY variables used to move the widgets.
* All the widgets are constrained to be moved only in X axis (diffY is set to 0).
*
* @param diffX The difference between current X position and new X position.
* @param diffY The difference between current Y position and new Y position.
*/
virtual void constrainMovementForAllWidgets(int &diffX, int &diffY);
};
#endif
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