TSLWin32PrintContext Class Reference

Inheritance diagram for TSLWin32PrintContext:

Public Member Functions
	TSLWin32PrintContext (HDC dc)
virtual	~TSLWin32PrintContext ()
virtual bool	clearClipRectangle ()
virtual void *	drawable (bool rastersPossible)
virtual bool	drawToSurface (double uux1, double uuy1, double uux2, double uuy2, bool clear)
virtual double	duPerMetre () const
virtual void	endPage ()
virtual double	pixelScaling () const
virtual bool	printableArea (TSLEnvelope &area) const
virtual void	printingComplete ()
virtual bool	setClipRectangle (const TSLEnvelope &clip)
virtual void	startPage ()
virtual TSLDrawingSurface *	surface ()
Public Member Functions inherited from TSLPrintContext
virtual	~TSLPrintContext ()=0

Protected Attributes
HDC	m_dc
int	m_dcStack
HRGN	m_hrgn
TSLNTSurface *	m_surface
bool	m_rastersPossible

Constructor & Destructor Documentation

TSLWin32PrintContext()

TSLWin32PrintContext::TSLWin32PrintContext ( HDC dc )

inline

Constructor for the Win32 specific implementation of the print context.

Parameters

dc	Device context to bind to.

Class TSLWin32PrintContext

~TSLWin32PrintContext()

TSLWin32PrintContext::~TSLWin32PrintContext ( )

inlinevirtual

Destructor.

Member Function Documentation

clearClipRectangle()

bool TSLWin32PrintContext::clearClipRectangle ( )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

This method should clear the current clip rectangle.

Implements TSLPrintContext.

drawable()

void * TSLWin32PrintContext::drawable ( bool rastersPossible )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Query for the drawable associated with the context.

Parameters

rastersPossible

True if the display potentially contains rasters - some printers have issues with this.

Returns

DC on NT

Implements TSLPrintContext.

drawToSurface()

bool TSLWin32PrintContext::drawToSurface ( double uux1, double uuy1, double uux2, double uuy2, bool clear )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Draw the specified area of the surface.

Parameters

uux1,uuy1,uux2,uuy2	Corners of area to draw
clear	If true, clear area before drawing.

Returns

true on success, false otherwise.

Implements TSLPrintContext.

duPerMetre()

double TSLWin32PrintContext::duPerMetre ( ) const

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Query the number of device units per metre, of the associated device. This is used when printing to a particular scale.

Returns number of device units per metre.

Implements TSLPrintContext.

endPage()

void TSLWin32PrintContext::endPage ( )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Sends an end page message to printer.

Implements TSLPrintContext.

pixelScaling()

double TSLWin32PrintContext::pixelScaling ( ) const

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Queries for the pixel scaling factor when in anisotropic mode - adjusts for print preview to screen. This is required since LeadTools is unable to handle anisotropic mode and so we must render into a bitmap, but adjust pixel based dimensions accordingly.

Implements TSLPrintContext.

printableArea()

bool TSLWin32PrintContext::printableArea ( TSLEnvelope & area ) const

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Query for the printable device unit area.

Parameters

area	Storage for printable area, in device units.

Implements TSLPrintContext.

printingComplete()

void TSLWin32PrintContext::printingComplete ( )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Indicates that printing is complete

Implements TSLPrintContext.

setClipRectangle()

bool TSLWin32PrintContext::setClipRectangle ( const TSLEnvelope & clip )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

This method should set the specified clip rectangle to compensate for any logical->physical mapping that may be in effect.

Parameters

clip	Clip rectangle to set

This is particularly required to handle print preview under MFC.

Implements TSLPrintContext.

startPage()

void TSLWin32PrintContext::startPage ( )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Sends a start page message to printer.

Implements TSLPrintContext.

surface()

TSLDrawingSurface * TSLWin32PrintContext::surface ( )

inlinevirtual

NOTE : This method is used by the TSLPrintHelper and should NOT be called by user code.

Query for the bound drawing surface.

Implements TSLPrintContext.

Member Data Documentation

m_dc

HDC TSLWin32PrintContext::m_dc

protected

Data Members for Class Attributes This is the DC associated with the printer.

m_dcStack

int TSLWin32PrintContext::m_dcStack

protected

Private attribute storing the ID of the DC. Used to avoid contaminating the DC passed in.

m_hrgn

HRGN TSLWin32PrintContext::m_hrgn

protected

Private attribute, used to provide clipping for TSLPrintItems.

m_rastersPossible

bool TSLWin32PrintContext::m_rastersPossible

protected

m_surface

TSLNTSurface* TSLWin32PrintContext::m_surface

protected

Private attribute storing temporary Drawing Surface used during printing.