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tdesdk/umbrello/umbrello/umlwidget.h

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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) 2002-2007 *
* Umbrello UML Modeller Authors <uml-devel@uml.sf.net> *
***************************************************************************/
#ifndef UMLWIDGET_H
#define UMLWIDGET_H
#include <tqcanvas.h>
#include <tqdatetime.h>
#include <tqfont.h>
#include "umlnamespace.h"
#include "widgetbase.h"
#include "associationwidgetlist.h"
#include "optionstate.h"
class UMLWidgetController;
class UMLObject;
class UMLView;
class UMLDoc;
class ListPopupMenu;
class IDChangeLog;
class TQPainter;
class TQFont;
class TQFontMetrics;
/**
* This is the base class for nearly all graphical widgets.
*
* @short The base class for graphical UML objects.
* @author Paul Hensgen <phensgen@techie.com>
* Bugs and comments to uml-devel@lists.sf.net or http://bugs.kde.org
*/
class UMLWidget : public WidgetBase, public TQCanvasRectangle {
Q_OBJECT
TQ_OBJECT
public:
friend class UMLWidgetController;
/**
* Creates a UMLWidget object.
*
* @param view The view to be displayed on.
* @param o The UMLObject to represent.
* @param widgetController The UMLWidgetController of this UMLWidget
*/
UMLWidget( UMLView * view, UMLObject * o, UMLWidgetController *widgetController = 0 );
/**
* Creates a UMLWidget object.
*
* @param view The view to be displayed on.
* @param id The id of the widget.
* The default value (id_None) will prompt generation of a new ID.
* @param widgetController The UMLWidgetController of this UMLWidget
*/
explicit UMLWidget( UMLView * view, Uml::IDType id = Uml::id_None, UMLWidgetController *widgetController = 0 );
/**
* Standard deconstructor
*/
virtual ~UMLWidget();
/**
* Copy constructor
*/
UMLWidget(const UMLWidget& other);
/**
* Assignment operator
*/
virtual UMLWidget& operator=(const UMLWidget& other);
/**
* Overload '==' operator
*/
virtual bool operator==(const UMLWidget& other);
/**
* Calls the method with the same name in UMLWidgetController.
* @see UMLWidgetController#mouseReleaseEvent
*
* @param me The TQMouseEvent event.
*/
virtual void mouseReleaseEvent(TQMouseEvent * me);
/**
* Calls the method with the same name in UMLWidgetController.
* @see UMLWidgetController#mouseDoubleClickEvent
*
* @param me The TQMouseEvent event.
*/
virtual void mouseDoubleClickEvent(TQMouseEvent *me);
/**
* Set the status of using fill color.
*
* @param fc the status of using fill color.
*/
void setUseFillColour(bool fc);
/**
* Read property of bool m_bUseFillColour.
*/
bool getUseFillColour() const {
return m_bUseFillColour;
}
/**
* Overrides the method from WidgetBase.
*/
void setLineColor(const TQColor &colour);
/**
* Overrides the method from WidgetBase.
*/
void setLineWidth(uint width);
/**
* Sets the background fill colour
*
* @param colour the new fill colour
*/
void setFillColour(const TQColor &colour);
/**
* Read property of TQColor m_FillColour.
*/
TQColor getFillColour() const {
return m_FillColour;
}
/**
* Calls the method with the same name in UMLWidgetController.
* @see UMLWidgetController#mouseMoveEvent
*
* @param me The TQMouseEvent event.
*/
virtual void mouseMoveEvent(TQMouseEvent* me);
/**
* Returns whether this is a line of text.
* Used for transparency in printing.
*
* @return always false
*/
virtual bool isText() {
return false;
}
/**
* Sets the state of whether the widget is selected.
*
* @param _select The state of whether the widget is selected.
*/
virtual void setSelected(bool _select);
/**
* Returns the state of whether the widget is selected.
*
* @return Returns the state of whether the widget is selected.
*/
bool getSelected() const {
return m_bSelected;
}
void setSelectedFlag(bool _select) {
m_bSelected = _select;
}
/**
* Sets the view the widget is on.
*
* @param v The view the widget is on.
*/
void setView(UMLView * v);
/**
* Activate the object after serializing it from a TQDataStream
*
* @param ChangeLog
* @return true for success
*/
virtual bool activate(IDChangeLog* ChangeLog = 0);
/**
* Returns 0 if the given point is not in the boundaries of the widget,
* else returns a number which is proportional to the size of the widget.
*
* @param p Point to be checked.
*
* @return 0 if the given point is not in the boundaries of the widget;
* (width()+height())/2 if the point is within the boundaries.
*/
virtual int onWidget(const TQPoint & p);
/**
* Draws the UMLWidget on the given paint device
*
* @param p The painter for the drawing device
* @param offsetX x position to start the drawing.
* @param offsetY y position to start the drawing.
*
*/
virtual void draw(TQPainter & p, int offsetX, int offsetY) = 0;
/**
* Set the pen.
*/
void setPen(TQPainter & p);
/**
* Sets the font the widget is to use.
*
* @param font Font to be set.
*/
virtual void setFont( TQFont font );
/**
* Returns the font the widget is to use.
*/
virtual TQFont getFont() const;
/**
* Returns whether we triggered the update of position movement.
* If so, you probably don't want to move it.
*
* @return The moving state.
*/
bool getStartMove() {
return m_bStartMove;
}
/**
* Sets the x-coordinate.
* Currently, the only class that reimplements this method is
* ObjectWidget.
*
* @param x The x-coordinate to be set.
*/
virtual void setX( int x );
/**
* Sets the y-coordinate.
* Currently, the only class that reimplements this method is
* ObjectWidget.
*
* @param y The y-coordinate to be set.
*/
virtual void setY( int y );
/**
* Sets the z-coordinate.
*
* @param z The z-coordinate to be set.
*/
virtual void setZ( int z );
/**
* Gets the x-coordinate.
*/
int getX() const {
return (int)TQCanvasItem::x();
}
/**
* Gets the y-coordinate.
*/
int getY() const {
return (int)TQCanvasItem::y();
}
/**
* Gets the z-coordinate.
*/
int getZ() const {
return (int)TQCanvasItem::z();
}
/**
* Returns the height of widget.
*/
int getHeight() const {
return TQCanvasRectangle::height();
}
/**
* Returns the width of the widget.
*/
int getWidth() const {
return TQCanvasRectangle::width();
}
/**
* Sets the size.
* If m_pView->getSnapComponentSizeToGrid() is true, then
* set the next larger size that snaps to the grid.
*/
void setSize(int width,int height);
/**
* Set m_bIgnoreSnapToGrid.
*/
void setIgnoreSnapToGrid(bool to);
/**
* Return the value of m_bIgnoreSnapToGrid.
*/
bool getIgnoreSnapToGrid() const;
/**
* Move the widget by an X and Y offset relative to
* the current position.
*/
void moveBy(int dx, int dy);
/**
* Removes an already created association from the list of
* associations that include this UMLWidget
*/
void removeAssoc(AssociationWidget* pAssoc);
/**
* Adds an already created association to the list of
* associations that include this UMLWidget
*/
void addAssoc(AssociationWidget* pAssoc);
/**
* Returns the list of associations connected to this widget.
*/
AssociationWidgetList & getAssocList() {
return m_Assocs;
}
/**
* Returns m_bUsesDiagramFillColour
*/
bool getUsesDiagramFillColour() const {
return m_bUsesDiagramFillColour;
}
/**
* Returns m_bUsesDiagramUseFillColour
*/
bool getUsesDiagramUseFillColour() const {
return m_bUsesDiagramUseFillColour;
}
/**
* Sets m_bUsesDiagramFillColour
*/
void setUsesDiagramFillColour(bool usesDiagramFillColour) {
m_bUsesDiagramFillColour = usesDiagramFillColour;
}
/**
* Sets m_bUsesDiagramUseFillColour
*/
void setUsesDiagramUseFillColour(bool usesDiagramUseFillColour) {
m_bUsesDiagramUseFillColour = usesDiagramUseFillColour;
}
/**
* Write property of bool m_bIsInstance
*/
void setIsInstance(bool isInstance) {
m_bIsInstance = isInstance;
}
/**
* Read property of bool m_bIsInstance
*/
bool getIsInstance() const {
return m_bIsInstance;
}
/**
* Write property of m_instanceName
*/
void setInstanceName(const TQString &instanceName) {
m_instanceName = instanceName;
}
/**
* Read property of m_instanceName
*/
TQString getInstanceName() const {
return m_instanceName;
}
/**
* Returns the status of whether to show Stereotype.
*
* @return True if stereotype is shown.
*/
bool getShowStereotype() const;
/**
* Set the status of whether to show Stereotype.
*
* @param _status True if stereotype shall be shown.
*/
virtual void setShowStereotype(bool _status);
/**
* Show a properties dialog for a UMLWidget.
*/
virtual void showProperties();
/**
* Returns true if the Activate method has been called for this instance
*
* @return The activate status.
*/
bool isActivated();
/**
* Sets the name in the corresponding UMLObject.
* Sets the local m_Text if m_pObject is NULL.
*
* @param strName The name to be set.
*/
virtual void setName(const TQString &strName);
/**
* Gets the name from the corresponding UMLObject.
* Returns the local m_Text if m_pObject is NULL.
*
* @return The currently set name.
*/
virtual TQString getName() const;
/**
* Starts the popup menu.
*
* @param At The Point where the diagram is to be coming up.
*/
void startPopupMenu( const TQPoint &At );
/**
* Adjusts associations with the given co-ordinates
*
* @param x The x-coordinate.
* @param y The y-coordinate.
*/
virtual void adjustAssocs(int x, int y);
/**
* Adjusts all unselected associations with the given co-ordinates
*
* @param x The x-coordinate.
* @param y The y-coordinate.
*/
void adjustUnselectedAssocs(int x, int y);
/**
* Set the m_bActivated flag of a widget but does not perform the Activate method
*
* @param Active tqStatus of activation is to be set.
*/
void setActivated(bool Active = true);
/**
* Used to cleanup any other widget it may need to delete.
* Used by child classes. This should be called before deleting a widget of a diagram.
*/
virtual void cleanup();
/**
* Returns whether the widget type has an associated UMLObject
*/
static bool widgetHasUMLObject(Uml::Widget_Type type);
/**
* Update the size of this widget.
*/
void updateComponentSize();
/**
* @note For performance Reasons, only FontMetrics for already used
* font types are updated. Not yet used font types will not get a font metric
* and will get the same font metric as if painter was zero.
* This behaviour is acceptable, because diagrams will always be showed on Display
* first before a special painter like a printer device is used.
*/
void forceUpdateFontMetrics(TQPainter *painter);
/**
* Calls the method with the same name in UMLWidgetController.
* @see UMLWidgetController#mousePressEvent
*
* @param me The TQMouseEvent event.
*/
virtual void mousePressEvent(TQMouseEvent *me);
/**
* Overrides the standard operation.
*
* @param me The move event.
*/
virtual void moveEvent(TQMoveEvent *me);
virtual void saveToXMI( TQDomDocument & qDoc, TQDomElement & qElement );
virtual bool loadFromXMI( TQDomElement & qElement );
/**
* Returns the UMLWdigetController for this widget.
*/
UMLWidgetController* getWidgetController();
protected:
/**
* Apply possible constraints to the given candidate width and height.
* The default implementation calls calculateSize() and
* assigns the returned values if they are greater than the
* input values.
*
* @param width input value, may be modified by the constraint
* @param height input value, may be modified by the constraint
*/
virtual void constrain(int& width, int& height);
/**
* Draws that the widget is selected.
*
* @param p Device on which is the selection is to be drawn.
* @param offsetX The x-coordinate for drawing.
* @param offsetY The y-coordinate for drawing.
*/
virtual void drawSelected(TQPainter * p, int offsetX, int offsetY);
/**
* Overrides default method.
*
* @param p Device on which the shape.has to be drawn.
*/
virtual void drawShape(TQPainter &p );
/**
* Compute the minimum possible width and height.
* The default implementation returns width=20, height=20.
*
* @return TQSize(mininum_width, minimum_height)
*/
virtual TQSize calculateSize();
typedef enum {
FT_NORMAL = 0,
FT_BOLD = 1,
FT_ITALIC = 2,
FT_UNDERLINE = 3,
FT_BOLD_ITALIC = 4,
FT_BOLD_UNDERLINE = 5,
FT_ITALIC_UNDERLINE = 6,
FT_BOLD_ITALIC_UNDERLINE = 7,
FT_INVALID = 8
} FontType;
/** Template Method, override this to set the default
* font metric.
*/
virtual void setDefaultFontMetrics(UMLWidget::FontType fontType);
virtual void setDefaultFontMetrics(UMLWidget::FontType fontType, TQPainter &painter);
/** Returns the font metric used by this object for Text which uses bold/italic fonts*/
TQFontMetrics &getFontMetrics(UMLWidget::FontType fontType);
/** set the font metric to use */
void setFontMetrics(UMLWidget::FontType fontType, TQFontMetrics fm);
void setupFontType(TQFont &font, UMLWidget::FontType fontType);
/**
* Initializes key attributes of the class.
*/
void init();
///////////////// Data Loaded/Saved /////////////////////////////////
/**
* This flag indicates if the UMLWidget uses the Diagram FillColour
*/
bool m_bUseFillColour;
/**
* true by default, false if the colours have
* been explicitly set for this widget
*/
bool m_bUsesDiagramFillColour;
bool m_bUsesDiagramUseFillColour;
/**
* Color of the background of the widget
*/
TQColor m_FillColour;
/**
* A list of AssociationWidgets between the UMLWidget and other UMLWidgets in the diagram
*/
AssociationWidgetList m_Assocs;
/**
* getName() returns the name from the UMLObject if this widget has an
* underlying UMLObject; if it does not, then getName() returns the local
* m_Text (notably the case for FloatingTextWidget.)
*/
TQString m_Text;
/**
* The font the widget will use.
*/
TQFont m_Font;
/**
* Holds whether this widget is a component instance (i.e. on a deployment diagram)
*/
bool m_bIsInstance;
/**
* The instance name (used if on a deployment diagram)
*/
TQString m_instanceName;
/**
* Should the stereotype be displayed
*/
bool m_bShowStereotype;
///////////////// End of Data Loaded/Saved //////////////////////////
bool m_bSelected, m_bStartMove;
int m_nPosX, m_origZ;
ListPopupMenu *m_pMenu;
UMLDoc *m_pDoc; ///< shortcut for UMLApp::app()->getDocument()
bool m_bResizable;
TQFontMetrics *m_pFontMetrics[FT_INVALID];
/**
* It is true if the Activate Function has been called for this
* class instance
*/
bool m_bActivated;
/**
* Change Widget Behaviour
*/
bool m_bIgnoreSnapToGrid;
bool m_bIgnoreSnapComponentSizeToGrid;
/**
* Controller for user interaction events.
*/
UMLWidgetController *m_widgetController;
public slots:
/**
* This slot is entered when an event has occurred on the views display,
* most likely a mouse event. Before it sends out that mouse event all
* tqchildren should make sure that they don't have a menu active or there
* could be more than one popup menu displayed.
*/
virtual void slotRemovePopupMenu();
/**
* When a widget changes this slot captures that signal.
*/
virtual void updateWidget();
/**
* Captures any popup menu signals for menus it created.
*
* @param sel The command which has to be executed.
*/
virtual void slotMenuSelection(int sel);
/**
* Captures when another widget moves if it is link to it that signal.
*
* @param id The id of object behind the widget.
*/
virtual void slotWidgetMoved(Uml::IDType id);
/**
* Captures a color change signal.
*
* @param viewID The id of the object behind the widget.
*/
virtual void slotColorChanged(Uml::IDType viewID);
/**
* Captures a linewidth change signal.
*
* @param viewID The id of the object behind the widget.
*/
virtual void slotLineWidthChanged(Uml::IDType viewID);
/**
* Captures a sigClearAllSelected signal sent by @ref UMLView
*/
void slotClearAllSelected();
/**
* Tells the widget to snap to grid.
* Will use the grid settings of the @ref UMLView it belongs to.
*/
void slotSnapToGrid();
signals:
/**
* Emit when the widget moves its' position.
*
* @param id The id of the object behind the widget.
*/
void sigWidgetMoved(Uml::IDType id);
};
#endif