umlentity.cpp

uml编辑器很牛

/* ==========================================================================
	Class :			CUMLEntity

	Author :		Johan Rosengren, Abstrakt Mekanik AB

	Date :			2004-04-29

	Purpose :		"CUMLEntity" is a base class for linked objects used 
					by a "CDiagramEditor".	

	Description :	The class contains a few virtual functions that derived 
					classes can implement:
					"GetLinkPosition" will return the position of a link type. 
					The coordinates are not zoomed, so if they should be 
					used for drawing, they must be multiplied with the 
					current zoom factor of the editor.

	Usage :			Use this class as a base class for linked objects.

   ========================================================================*/
#include "stdafx.h"
#include "UMLEntity.h"
#include "LinkFactory.h"
#include "DiagramEditor/Tokenizer.h"
#include "StringHelpers.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

CUMLEntity::CUMLEntity()
/* ============================================================
	Function :		CUMLEntity::CUMLEntity
	Description :	Constructor
	Access :		Public
					
	Return :		void
	Parameters :	none

	Usage :			Create either through "CUMLControlFactory" or
					by calling "new" and adding the pointer to the
					editor via "StartDrawingObject"

   ============================================================*/
{

	// Setting fixed size
	SetDefaultSize( CSize( 0, 0 ) );
	SetConstraints( CSize( 0, 0 ), CSize( 0, 0 ) );
	SetType( _T( "uml_entity" ) );

	SetName( CLinkFactory::GetID() );

	SetRect( 0, 0, 0, 0 );

	SetFont( _T( "Arial" ) );
	SetBkColor( RGB( 255, 255, 255 ) );
	SetZoom( 1.0 );

	SetPackage( _T( "" ) );

	SetDisplayOptions( DISPLAY_ALL );

}

CUMLEntity::~CUMLEntity()
/* ============================================================
	Function :		CUMLEntity::~CUMLEntity
	Description :	Destructor
	Access :		Public
					
	Return :		void
	Parameters :	none

	Usage :			Note that objects will normally be deleted by
					the container.

   ============================================================*/
{
}

CDiagramEntity* CUMLEntity::Clone()
/* ============================================================
	Function :		CUMLEntity::Clone
	Description :	Clone this object to a new object.
	Access :		Public
					
	Return :		CDiagramEntity*	-	The new object.
	Parameters :	none

	Usage :			Call to create a clone of the object. The 
					caller will have to delete the object.

   ============================================================*/
{

	CUMLEntity* obj = new CUMLEntity;
	obj->Copy( this );
	return obj;

}

CDiagramEntity* CUMLEntity::CreateFromString( const CString& str )
/* ============================================================
	Function :		CUMLEntity::CreateFromString
	Description :	Static factory function that creates and 
					returns an instance of this class if "str" 
					is a valid representation.
	Access :		Public
					
	Return :		CDiagramEntity*		-	The object, or "NULL" 
											if "str" is not a 
											representation of 
											this type.
	Parameters :	const CString& str	-	The string to create 
											from.
					
	Usage :			Can be used as a factory for text file loads. 
					Each object type should have its own 
					version - the default one is a model 
					implementation.

   ============================================================*/
{

	CUMLEntity* obj = new CUMLEntity;
	if(!obj->FromString( str ) )
	{
		delete obj;
		obj = NULL;
	}

	return obj;

}

int CUMLEntity::GetLinkCode( CPoint point ) const
/* ============================================================
	Function :		CUMLEntity::GetLinkCode
	Description :	Gets the link code for the position "point".
	Access :		Public

	Return :		int				-	The link code.
	Parameters :	CPoint point	-	Position to thest
					
	Usage :			
					The possible link types are:
						"LINK_TOP" Link at the top
						"LINK_BOTTOM" Link at the bottom
						"LINK_LEFT" Link at the left
						"LINK_RIGHT" Link at the right
						"LINK_START" Link at the start point of a line
						"LINK_END" Link at the end point of a line.

   ============================================================*/
{

	int cut = 1;
	int result = LINK_NONE;
	CRect rect = GetRect();
	if( ( point.x >= rect.left && point.x <= rect.right ) && ( point.y >= rect.top - cut && point.y <= rect.top + cut ) )
		result = LINK_TOP;
	if( ( point.x >= rect.left && point.x <= rect.right ) && ( point.y >= rect.bottom - cut && point.y <= rect.bottom + cut ) )
		result = LINK_BOTTOM;
	if( ( point.y >= rect.top && point.y <= rect.bottom ) && ( point.x >= rect.left - cut && point.x <= rect.left + cut ) )
		result = LINK_LEFT;
	if( ( point.y >= rect.top && point.y <= rect.bottom ) && ( point.x >= rect.right - cut && point.x <= rect.right + cut ) )
		result = LINK_RIGHT;

	return result;

}

CPoint CUMLEntity::GetLinkPosition( int type ) const
/* ============================================================
	Function :		CUMLEntity::GetLinkPosition
	Description :	Returns the position of a link.
	Access :		Public
					
	Return :		CPoint		-	The position of the link,
									-1, -1 if the link is not
									allowed.
	Parameters :	int type	-	The type of the link.
					
	Usage :			The possible link types are:
						"LINK_TOP" Links are allowed to the top of the object.
						"LINK_BOTTOM" Links are allowed to the bottom.
						"LINK_LEFT" Links are allowed to the left.
						"LINK_RIGHT" Links are allowed to the right.
						"LINK_START" Links are allowed to the start of a line (normally the top-left corner of the non-normalized bounding rect).
						"LINK_END" Links are allowed to the end of a line (normally the bottom-right corner of the non-normalized bounding rect).

   ============================================================*/
{

	CPoint point( -1, -1 );
	CRect rect = GetRect();
	switch( type )
	{
		case LINK_LEFT:
			point.x = rect.left;
			point.y = rect.top + round( static_cast< double >( rect.Height() ) / 2 );
			break;
		case LINK_RIGHT:
			point.x = rect.right;
			point.y = rect.top + round( static_cast< double >( rect.Height() ) / 2 );
			break;
		case LINK_TOP:
			point.x = rect.left + round( static_cast< double >( rect.Width() ) / 2 );
			point.y = rect.top;
			break;
		case LINK_BOTTOM:
			point.x = rect.left + round( static_cast< double >( rect.Width() ) / 2 );
			point.y = rect.bottom;
			break;
		case LINK_START:
			point.x = rect.left;
			point.y = rect.top;
			break;
		case LINK_END:
			point.x = rect.right;
			point.y = rect.bottom;
			break;
	}

	return point;

}

void CUMLEntity::Copy( CDiagramEntity* obj )
/* ============================================================
	Function :		CUMLEntity::Copy
	Description :	Copies the information from "obj" to 
					this object.
	Access :		Public

	Return :		void
	Parameters :	CDiagramEntity* obj	-	Object to copy from
					
	Usage :			Call to copy information from "obj" to 
					this object.

   ============================================================*/
{

	CDiagramEntity::Copy( obj );

	SetName( CLinkFactory::GetID() );
	CUMLEntity* uml = dynamic_cast< CUMLEntity* >( obj );
	if( uml )
	{

		SetPackage( uml->GetPackage() );
		SetBkColor( uml->GetBkColor() );
		SetFont( uml->GetFont() );
		SetOldId( uml->GetName() );
		SetDisplayOptions( uml->GetDisplayOptions() );

	}

}

void CUMLEntity::SetPackage( const CString& package )
/* ============================================================
	Function :		CUMLEntity::SetPackage
	Description :	Sets the package this object belongs to.
	Access :		Public

	Return :		void
	Parameters :	const CString& package	-	Name of package
					
	Usage :			Call to set the package this object belongs 
					to. The package is the "m_name" of the package 
					containing this object.

   ============================================================*/
{

	m_package = package;

}

CString CUMLEntity::GetPackage() const
/* ============================================================
	Function :		CUMLEntity::GetPackage
	Description :	Gets the package this object belongs to.
	Access :		Public

	Return :		CString	-	Name of owning package
	Parameters :	none

	Usage :			Call to get the package this object belongs 
					to. The package is the "m_name" of the package 
					containing this object.

   ============================================================*/
{

	return m_package;

}

COLORREF CUMLEntity::GetBkColor() const
/* ============================================================
	Function :		CUMLEntity::GetBkColor
	Description :	Gets the background color of this object.
	Access :		Public

	Return :		COLORREF	-	Background color.
	Parameters :	none

	Usage :			Call to get the background color of this 
					object.

   ============================================================*/
{

	return m_bkColor;

}

void CUMLEntity::SetBkColor( COLORREF bkColor )
/* ============================================================
	Function :		CUMLEntity::SetBkColor
	Description :	Sets the background color of this object.
	Access :		Public

	Return :		void
	Parameters :	COLORREF bkColor	-	Background color.
					
	Usage :			Call to set the background color of this 
					object.

   ============================================================*/
{

	m_bkColor = bkColor;

}

CString CUMLEntity::GetFont() const
/* ============================================================
	Function :		CUMLEntity::GetFont
	Description :	Gets the font for this object.
	Access :		Public

	Return :		CString	-	Font name
	Parameters :	none

	Usage :			Call to get the font for this object.

   ============================================================*/
{

	return m_fontName;

}

void CUMLEntity::SetFont( const CString& fontName )
/* ============================================================
	Function :		CUMLEntity::SetFont
	Description :	Sets the font for this object.
	Access :		Public

	Return :		void
	Parameters :	const CString& fontName	-	New font name
					
	Usage :			Call to set the font for this object.