CFlowchartEditor - linking things in CDiagramEditor

/* ==========================================================================
	CFlowchartEntityTerminator

	Author :		Johan Rosengren, Abstrakt Mekanik AB

	Date :			2004-04-29

	Purpose :		CFlowchartEntityTerminator, derived from CFlowchartEntity, 
					represents a linkable terminator. The terminator can link 
					from all four sides.	

	Description :	The class implements the necessary functions for cloning 
					and creation from text (Clone and CreateFromString). It 
					draws a rectangle using the title attribute of 
					CDiagramEntity as the text contents. 

	Usage :			Create with CFlowchartControlFactory::CreateFromString

   ========================================================================*/

#include "stdafx.h"
#include "FlowchartEntityTerminator.h"

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

CFlowchartEntityTerminator::CFlowchartEntityTerminator()
/* ============================================================
	Function :		CFlowchartEntityTerminator::CFlowchartEntityTerminator
	Description :	constructor
					
	Return :		void
	Parameters :	none

	Usage :			

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

	SetConstraints( CSize( 128, 32 ), CSize( 128, 32 ) );
	SetType( _T( "flowchart_start" ) );

	CString title;
	title.LoadString( IDS_FLOWCHART_TERMINATOR );
	SetTitle( title );

}

CFlowchartEntityTerminator::~CFlowchartEntityTerminator()
/* ============================================================
	Function :		CFlowchartEntityTerminator::~CFlowchartEntityTerminator
	Description :	destructor
					
	Return :		void
	Parameters :	none

	Usage :			

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

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

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

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

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

}

CDiagramEntity* CFlowchartEntityTerminator::CreateFromString( const CString& str )
/* ============================================================
	Function :		CFlowchartEntityTerminator::CreateFromString
	Description :	Static factory function that creates and 
					returns an instance of this class if str 
					is a valid representation.
					
	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.

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

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

	return obj;

}

void CFlowchartEntityTerminator::Draw( CDC* dc, CRect rect )
/* ============================================================
	Function :		CFlowchartEntityTerminator::Draw
	Description :	Draws the object.

	Return :		void
	Parameters :	CDC* dc		-	The CDC to draw to. 
					CRect rect	-	The real rectangle of the 
									object.

	Usage :			The function should clean up all selected 
					objects. Note that the CDC is a memory CDC, 
					so creating a memory CDC in this function 
					will probably not speed up the function.

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

	dc->SelectStockObject( BLACK_PEN );
	dc->SelectStockObject( WHITE_BRUSH );

	CSize sz = GetMarkerSize();
	CPoint pt;
	pt.x = round( (double ) sz.cx * GetZoom() );
	pt.y = round( (double ) sz.cy * GetZoom() );
	dc->RoundRect( rect, pt );

	CFont font;
	font.CreateFont( -round( 12.0 * GetZoom() ), 0,0,0,FW_NORMAL,0,0,0,0,0,0,0,0, _T( "Courier New" ) );
	dc->SelectObject( &font );
	int mode = dc->SetBkMode( TRANSPARENT );
	dc->DrawText( GetTitle(), rect, DT_NOPREFIX | DT_SINGLELINE | DT_VCENTER | DT_CENTER );
	dc->SelectStockObject( DEFAULT_GUI_FONT );
	dc->SetBkMode( mode );

}