Port class. More...

#include <ilviews/base/port.h>

Inheritance diagram for IlvSystemPort:

Public Member Functions
	IlvSystemPort (IlvDisplay *display, IlvWindowsHandle HDC, IlvDim width=0, IlvDim height=0)
	Windows-specific constructor. More...

virtual void	clearArea (const IlvRect &, IlBoolean=IlFalse) const
	Clears a rectangular area of the screen. More...

virtual void	clearArea (const IlvRegion &, IlBoolean=IlFalse) const
	Clears a region of the screen. More...

virtual void	clip (const IlvRect *) const
	Limits the drawing to the given rectangular area. More...

virtual void	clip (const IlvRegion *) const
	Limits the drawing to the given region. More...

virtual IlUShort	depth () const
	Gives the depth of the port. More...

virtual void	drawArc (const IlvPalette *, const IlvRect &, IlFloat, IlFloat) const
	Draws an arc. More...

virtual void	drawBitmap (const IlvPalette , const IlvSystemPort , const IlvRect &, const IlvPoint &) const
	Draws an image. More...

virtual void	drawBitmap (const IlvPalette , const IlvBitmap , const IlvRect &, const IlvRegion *=0, IlvPosition=IlvCenter, IlBoolean=IlFalse) const
	Draws an image. More...

virtual void	drawIString (const IlvPalette , const IlvPoint &, const char , int, IlvPosition=IlvLeft) const
	Draws a string at the given position. More...

virtual void	drawLine (const IlvPalette *, const IlvPoint &, const IlvPoint &) const
	Draws a line between 2 points. More...

virtual void	drawPoint (const IlvPalette *, const IlvPoint &) const
	Draws a point at the given position. More...

virtual void	drawPoints (const IlvPalette , IlUInt, const IlvPoint ) const
	Draws a series of points. More...

virtual void	drawPolyLine (const IlvPalette , IlUInt, const IlvPoint ) const
	Draws a series of connected lines. More...

virtual void	drawPolyLine (const IlvPalette , const IlvPoint &, IlUInt, const IlvDeltaPoint ) const
	Draws a series of connected lines relatively to a reference. More...

virtual void	drawRectangle (const IlvPalette *, const IlvRect &) const
	Draws the given rectangle. More...

virtual void	drawRoundRectangle (const IlvPalette *, const IlvRect &, IlUShort) const
	Draws a round rectangle. More...

virtual void	drawSegments (const IlvPalette , IlUInt, const IlvPoint , const IlvPoint *) const
	Draws a set of segments. More...

virtual void	drawString (const IlvPalette , const IlvPoint &, const char , int, IlvPosition=IlvLeft) const
	Draws a string at the given position. More...

virtual void	drawTransformedString (const IlvPalette , const char , int, const IlvTransformer &, const IlvRegion *=0) const
	Draws a transformed string. More...

virtual void	drawTransparentBitmap (const IlvPalette , const IlvSystemPort , const IlvRect &, const IlvPoint &) const
	Draws a transparent bitmap. More...

virtual void	end ()
	Closed the dump device. More...

virtual void	fillArc (const IlvPalette *, const IlvRect &, IlFloat, IlFloat) const
	Fills the arc. More...

virtual void	fillPaths (const IlvPalette , IlUInt, const IlvPointArray ) const
	Fills the shape defined by the given paths. More...

virtual void	fillPolyLine (const IlvPalette , IlUInt, const IlvPoint , IlBoolean=IlFalse) const
	Fills a polygon. More...

virtual void	fillPolyLine (const IlvPalette , const IlvPoint &, IlUInt, const IlvDeltaPoint , IlBoolean=IlFalse) const
	Fills a polygon. More...

virtual void	fillRectangle (const IlvPalette *, const IlvRect &) const
	Fills the given rectangle. More...

virtual void	fillRoundRectangle (const IlvPalette *, const IlvRect &, IlUShort) const
	Fills a round rectangle. More...

IlvWindowsHandle	getDC () const
	Gets the Windows Handle Device Context. More...

virtual IlBoolean	initDevice (const char , IlvRect =0)
	Initializes the dump device. More...

virtual IlBoolean	isABitmap () const
	Indicates that this port is a bitmap (not a view or a dump device). More...

virtual IlBoolean	isASystemPort () const
	Indicates that this port is a true system port (not a dump device). More...

virtual IlBoolean	isBad () const
	Indicates whether this port is valid. More...

virtual IlBoolean	newPage () const
	Produces an output page and prepares for a new page. More...

void	releaseDC ()
	Releases the Windows Handle Device Context. More...

virtual void	send (const char *) const
	Sends character strings to an output device. More...

virtual void	setTransformer (const IlvTransformer &)
	Applies another transformer to the coordinates provided for the drawing functions. More...

virtual void	stretchBitmap (const IlvPalette , const IlvPoint &, const IlvBitmap , const IlvTransformer &, const IlvRect *=0) const
	Stretches a bitmap. More...

virtual void	stretchBitmap (const IlvPalette , const IlvRect &, const IlvBitmap , const IlvRect *=0) const
	Stretches a bitmap. More...

virtual void	stretchBitmapData (const IlvPalette palette, const IlvBitmapData src, const IlvRect &from, const IlvRect &to, IlBoolean opaque=IlFalse) const
	Draws a bitmap data. More...

virtual void	stretchTransparentBitmap (const IlvPalette , const IlvPoint &, const IlvBitmap , const IlvTransformer &, const IlvRect *=0) const
	Stretches a transparent bitmap. More...

virtual void	stretchTransparentBitmap (const IlvPalette , const IlvRect &, const IlvBitmap , const IlvRect *=0) const
	Stretches a transparent bitmap. More...

Public Member Functions inherited from IlvPort
	IlvPort (IlvDisplay *display=0)
	Constructor. More...

void	composeAlpha (IlvIntensity alpha)
	Composes the current alpha value of the port. More...

virtual void	drawArrow (const IlvPalette *palette, const IlvPoint &from, const IlvPoint &to, IlFloat position) const
	Draws an arrow. More...

virtual void	drawBezier (const IlvPalette palette, IlUInt count, const IlvPoint points) const
	Draws a set of Bézier curves. More...

virtual void	drawClosedBezier (const IlvPalette palette, IlUInt count, const IlvPoint points) const
	Appends a closing curve to a set of Bézier curves. More...

virtual void	drawILabel (const IlvPalette palette, const char label, int length, const IlvRect &drawRect, const IlvRegion *clip=0, IlvPosition align=IlvCenter) const
	Draws a label in a rectangle. More...

virtual void	drawLabel (const IlvPalette palette, const char label, int length, const IlvRect &drawRect, const IlvRegion *clip=0, IlvPosition align=IlvCenter) const
	Draws a label in a rectangle. More...

virtual void	drawMarker (const IlvPalette *palette, const IlvPoint &location, IlvMarkerType type=IlvMarkerSquare, IlUShort size=IlvDefaultMarkerSize) const
	Draws a marker. More...

virtual void	drawMnemonicLabel (const IlvPalette palette, const char label, const IlvRect &drawRect, const IlvRegion *clip=0, IlvPosition align=IlvCenter, IlBoolean underline=IlTrue) const
	Draws an underlined letter in a label. More...

virtual void	drawOutlineRectangle (const IlvPalette outlinePalette, const IlvPalette fillPalette, const IlvRect &rect, const IlvRegion *clip=0) const
	Draws a rectangle with border effects. More...

virtual void	drawPaths (const IlvPalette palette, IlUInt count, const IlvPointArray paths) const
	Draws an array of paths as polylines. More...

virtual void	drawReliefDiamond (const IlvPalette , const IlvPalette invertedPalette, const IlvPalette topShade, const IlvPalette bottomShade, const IlvRect &bbox, IlUShort thickness, const IlvRegion *clip=0) const
	Draws a diamond with depth effects. More...

virtual void	drawReliefRectangle (const IlvPalette palette, const IlvPalette invertedPalette, const IlvPalette topShade, const IlvPalette bottomShade, const IlvRect &bbox, IlUShort thickness, const IlvRegion *clip=0) const
	Draws a filled rectangle with depth effects. More...

virtual void	drawShadowRectangle (const IlvPalette palette, const IlvPalette invertedPalette, const IlvRect &bbox, IlUShort thickness, IlvPosition shadowPosition, const IlvRegion *clip=0) const
	Draws a filled rectangle with its shadow. More...

virtual void	fillBezier (const IlvPalette palette, IlUInt count, const IlvPoint points) const
	Fills an area specified by a set of Bézier curves. More...

IlvIntensity	getAlpha () const
	Provides the alpha value of the port. More...

IlvAntialiasingMode	getAntialiasingMode () const
	Provides the anti-aliasing mode of the port. More...

IlvDisplay *	getDisplay () const
	Returns a pointer to the `IlvDisplay` of this port. More...

IlvDim	height () const
	Provides the height of the port. More...

virtual IlBoolean	isADevice () const
	Indicates that this port is a dump device. More...

void	setAlpha (IlvIntensity alpha)
	Sets the alpha value of the port. More...

void	setAntialiasingMode (IlvAntialiasingMode mode)
	Sets the anti-aliasing mode of the port. More...

void	size (IlvDim &w, IlvDim &h) const
	Gives the dimensions of the port. More...

IlvDim	width () const
	Provides the width of the port. More...

Static Public Member Functions
static IlvBitmapData *	GetBitmapData (IlvSystemPort port, const IlvRect rect=0)
	Creates an `IlvBitmapData` from a rectangular area in an `IlvSystemPort`. More...

Friends
class	IlvDisplay

Detailed Description

Port class.

Library: xviews or winviews or mviews (mutually exclusive)

The IlvSystemPort class defines the area in which you can draw. This area can be a real place or a virtual place. In the first case, the user draws directly into a region of the screen of the workstation. In the second case, the user draws into a bitmap in memory. Classes are derived from IlvSystemPort to accommodate these two possibilities.

- IlvSystemPort object: A rectangular area -

See Also: IlvAbstractView, IlvBitmap.

Constructor & Destructor Documentation

IlvSystemPort::IlvSystemPort	(	IlvDisplay *	display,
		IlvWindowsHandle	HDC,
		IlvDim	width = `0`,
		IlvDim	height = `0`
	)

Windows-specific constructor.

Used to create an IlvSystemPort object from a Windows HDC (Handle Device Context), which is specified by the second parameter passed to the constructor. The width and height arguments specify the size of the port.

Parameters

display	The display where this port is created.
HDC	The Windows Handle Device Context.
width	The width of the port.
height	The height of the port.

Member Function Documentation

virtual void IlvSystemPort::clearArea	(	const IlvRect &	rect,
		IlBoolean	reDraw = `IlFalse`
	)		const

virtual

Clears a rectangular area of the screen.

Clears the rectangular area of the screen area specified in drawRect. The destination port cannot be a bitmap, since a bitmap object does not have a color value that defines its background.

Parameters

rect	The rectangular area to clear.
reDraw	If it has the value `IlTrue` a message is sent requesting that the area be redrawn.

Reimplemented from IlvPort.

virtual void IlvSystemPort::clearArea	(	const IlvRegion &	region,
		IlBoolean	reDraw = `IlFalse`
	)		const

virtual

Clears a region of the screen.

Clears a region of the screen specified in region. The destination port cannot be a bitmap, since a bitmap object does not have a color value that defines its background.

Parameters

region	The region to clear.
reDraw	If it has the value `IlTrue` a message is sent requesting that the area be redrawn.

Reimplemented from IlvPort.

virtual void IlvSystemPort::clip ( const IlvRect * rect ) const

virtual

Limits the drawing to the given rectangular area.

Limits the drawing to the rect area. This area maps out a temporary clipping area. These settings will be erased when a new clip function is called.

Parameters

rect	The drawing rectangle.

Implements IlvPort.

Reimplemented in IlvWindowsVirtualDevice.

virtual void IlvSystemPort::clip ( const IlvRegion * region ) const

virtual

Limits the drawing to the given region.

Limits the drawing to the region region. This area maps out a temporary clipping area. These settings will be erased when a new clip function is called.

Parameters

region The drawing region.

Implements IlvPort.

Reimplemented in IlvWindowsVirtualDevice.

virtual IlUShort IlvSystemPort::depth ( ) const

virtual

Gives the depth of the port.

This function returns 1 in a monochrome environment. In a color environment, it returns n, where the actual number of possible colors is equal to 2 to the power of n: a depth of 4 means 16 colors, a depth of 8 means 256 colors, and so on.

Reimplemented in IlvBitmap.

virtual void IlvSystemPort::drawArc	(	const IlvPalette *	palette,
		const IlvRect &	rect,
		IlFloat	start,
		IlFloat	range
	)		const

virtual

Draws an arc.

Draws an arc that is part of an ellipse whose bounding box is the rectangle specified by rect. The arc extends from the angle start to the angle formed by the sum of start and range. These angles are given in degrees and the arc is drawn counterclockwise for positive angles and clockwise for negative angles.

Parameters

palette	The palette to use for the color of the arc.
rect	The bounding box of the ellipse for the arc.
start	The start angle in degrees.
range	The range in degrees.

Implements IlvPort.

virtual void IlvSystemPort::drawBitmap	(	const IlvPalette *	palette,
		const IlvSystemPort *	src,
		const IlvRect &	from,
		const IlvPoint &	to
	)		const

virtual

Draws an image.

Draws the image stored in src in the rectangle from. Copies part of the image maintained by a source port called src to this destination port.

Parameters

palette	The palette to use for the color of the bitmap.
src	The source port of the image.
from	The portion of src that is transferred.
to	The location of the top left corner of the destination.

Implements IlvPort.

virtual void IlvSystemPort::drawBitmap	(	const IlvPalette *	palette,
		const IlvBitmap *	src,
		const IlvRect &	drawRect,
		const IlvRegion *	clip = `0`,
		IlvPosition	alignment = `IlvCenter`,
		IlBoolean	transparent = `IlFalse`
	)		const

virtual

Draws an image.

Draws the image stored in src in the rectangle from, using the alignment position specified in the alignment parameter in relation to from. Copies part of the image maintained by a source port called src to this destination port.
You can specify a transparent bitmap display by setting the transparent parameter to IlTrue. Note that in this case the bitmap has to be 1-bit deep (that is, a monochrome bitmap) or must have a transparency mask.

Parameters

palette	The palette to use for the color of the bitmap.
src	The source port of the image.
drawRect	The size of the transferred image.
clip	The destination clip rectangle.
alignment	The position of the image in relation to the drawRect parameter.
transparent	Specifies whether the bitmap is transparent.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawIString	(	const IlvPalette *	palette,
		const IlvPoint &	position,
		const char *	string,
		int	length,
		IlvPosition	align = `IlvLeft`
	)		const

virtual

Draws a string at the given position.

Similar to drawString, except that it uses the background color to fill the rectangle that surrounds the string.

Parameters

palette	The palette used for drawing the string.
position	The location where to draw the string. This indicates the y location of the base line, and the x coordinates depends on align.
string	The text to draw.
length	The length of the string.
align	The alignment of the string with respect to position.

Implements IlvPort.

virtual void IlvSystemPort::drawLine	(	const IlvPalette *	palette,
		const IlvPoint &	point1,
		const IlvPoint &	point2
	)		const

virtual

Draws a line between 2 points.

Draws a line from the point point1 to the point point2.

Parameters

palette	The palette to use for the color of the line.
point1	The position of the first point.
point2	The position of the second point.

Implements IlvPort.

virtual void IlvSystemPort::drawPoint	(	const IlvPalette *	palette,
		const IlvPoint &	point
	)		const

virtual

Draws a point at the given position.

Draws a point at the position referred to as point, which is in fact a pixel. This function sets the indicated pixel in the destination port to the foreground color of palette.

Parameters

palette	The palette to use for the color of the point.
point	The position of the point to draw.

Implements IlvPort.

virtual void IlvSystemPort::drawPoints	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points
	)		const

virtual

Draws a series of points.

Draws a series of points (that is, sets a group of pixels to a given color value). They are stored as an array of count points, whose address is indicated by the pointer points.

Parameters

palette	The palette to use for the color of the point.
count	The number of points to draw.
points	The address of the points array.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawPolyLine	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points
	)		const

virtual

Draws a series of connected lines.

Draws a series of connected lines between the set of count points referred to as points.

Parameters

palette	The palette to use for the color of the lines.
count	The number of points.
points	The array of at least count points that define the polyline shape.

Implements IlvPort.

virtual void IlvSystemPort::drawPolyLine	(	const IlvPalette *	palette,
		const IlvPoint &	first,
		IlUInt	count,
		const IlvDeltaPoint *	others
	)		const

virtual

Draws a series of connected lines relatively to a reference.

Draws a series of connected lines that starts at the point called first and extends by means of relative positions which are given in the others array of count-1 delta values.

Parameters

palette	The palette to use for the color of the line.
first	The starting point of the polyline.
count	The number of points.
others	The other points of the polyline.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawRectangle	(	const IlvPalette *	palette,
		const IlvRect &	rect
	)		const

virtual

Draws the given rectangle.

Draws the rectangle specified by rect.

Parameters

palette	The palette to use for the color of the rectangle.
rect	The rectangle to draw.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawRoundRectangle	(	const IlvPalette *	palette,
		const IlvRect &	rect,
		IlUShort	radius
	)		const

virtual

Draws a round rectangle.

Parameters

palette	The palette used for drawing.
rect	The rectangle that is drawn.
radius	The radius of the round rectangle corners.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawSegments	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	from,
		const IlvPoint *	to
	)		const

virtual

Draws a set of segments.

Draws a set of segments whose number is indicated by count. The i^th segment starts at the point from[i] and ends at the point to[i].

Parameters

palette	The palette to use for the color of the segments.
count	The number of segments to draw.
from	The starting point of the segment.
to	The ending point of the segment.

Reimplemented from IlvPort.

virtual void IlvSystemPort::drawString	(	const IlvPalette *	palette,
		const IlvPoint &	position,
		const char *	string,
		int	length,
		IlvPosition	align = `IlvLeft`
	)		const

virtual

Draws a string at the given position.

Draws a string at the position referred to as position. The text to be drawn is given in the string parameter and its length is set in the length integer parameter. For this length parameter you can provide a negative number -1 instead of giving the real length. Text length is then computed internally since string is handled as a zero-terminated character array. The align parameter indicates how the string is to be aligned with respect to the position point. For this alignment, the y-coordinate of the position point represents the baseline, and the options are IlvLeft, IlvRight, and IlvCenter.

Parameters

palette	The palette used for drawing the string.
position	The location where to draw the string. This indicates the y location of the base line, and the x coordinates depends on align.
string	The text to draw.
length	The length of the string.
align	The alignment of the string with respect to position.

Implements IlvPort.

virtual void IlvSystemPort::drawTransformedString	(	const IlvPalette *	palette,
		const char *	string,
		int	length,
		const IlvTransformer &	t,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a transformed string.

Similar to drawString except that the string is drawn using the transformer t. Note that with the X window system, you should use normal fonts and transform the fonts through bitmaps. With Windows and OS/2, you should use true system vectorial fonts such as truetype fonts.

Parameters

palette	The palette used to draw the string.
string	The text to draw.
length	The length of the string.
t	The transformer to apply to the string.
clip	The destination clip area.

Implements IlvPort.

virtual void IlvSystemPort::drawTransparentBitmap	(	const IlvPalette *	palette,
		const IlvSystemPort *	src,
		const IlvRect &	from,
		const IlvPoint &	to
	)		const

virtual

Draws a transparent bitmap.

Draws the transparent bitmap in the rectangle. The result is displayed in the system port with the palette palette.

Parameters

palette	The palette to use for the color of the resulting bitmap.
src	The system port.
from	The portion of src that is transferred.
to	The location of the top left corner of the destination.

Implements IlvPort.

virtual void IlvSystemPort::end ( )

virtual

Closed the dump device.

Closes the dump device and does all the necessary cleaning.

Implements IlvPort.

Reimplemented in IlvWindowsDevice, and IlvWindowsVirtualDevice.

virtual void IlvSystemPort::fillArc	(	const IlvPalette *	palette,
		const IlvRect &	rect,
		IlFloat	start,
		IlFloat	range
	)		const

virtual

Fills the arc.

Fills the closed arc that is part of an ellipse whose bounding box is the rectangle specified by rect. The arc extends from the angle start to the angle formed by the sum of start and range. These angles are given in degrees. The actual filled shape depends on how the arc has been closed, either in IlvArcPie mode or in IlvArcChord mode.

Parameters

palette	The palette to use for the fill color of the arc.
rect	The bounding box of the ellipse for the arc.
start	The start angle in degrees.
range	The range in degrees.

Implements IlvPort.

virtual void IlvSystemPort::fillPaths	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPointArray *	pathArray
	)		const

virtual

Fills the shape defined by the given paths.

Fills the shape defined by all the paths described in the IlvPointArray array pathArray, with the IlvPalette palette. If count is 1, fillPaths may be seen as the drawing of a polygon. If none of the paths provided intersect, each polygon is drawn with the palette. The drawing becomes more complex when the paths intersect. A simple way to see this drawing is that when filled areas overlap, the intersection is empty. When a third area intersects with the first two areas, the intersection is filled.

The two objects have no filled intersection.

The small gray area in the middle represents the filled intersection of these three objects, while the white spaces are the overlapping areas between two objects. (For the purpose of this diagram, rectangles have been outlined).

Parameters

palette	The palette to use for the fill color of the paths.
count	The number of paths provided in the `IlvPointArray` array.
pathArray	The array of paths.

Reimplemented from IlvPort.

virtual void IlvSystemPort::fillPolyLine	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points,
		IlBoolean	convex = `IlFalse`
	)		const

virtual

Fills a polygon.

Fills a polygon that is drawn as a series of connected lines between the set of count points referred to as points.
If the optional flag convex is set to IlTrue, drawing convex polygons on certain systems may be accelerated. This feature should only be used when you are sure that the points provided form a convex contour. If this is not the case the result may be unpredictable.

Parameters

palette	The palette to use for the fill color of the polygon.
count	The number of points.
points	The points in the polyline.
convex	Flag for convex polygons.

Implements IlvPort.

virtual void IlvSystemPort::fillPolyLine	(	const IlvPalette *	palette,
		const IlvPoint &	first,
		IlUInt	count,
		const IlvDeltaPoint *	others,
		IlBoolean	convex = `IlFalse`
	)		const

virtual

Fills a polygon.

Fills a polygon that is drawn as a series of connected lines that starts at the point whose reference is first, and extends by means of relative positions referred to as the array of others of count relative positions.
If the optional flag convex is set to IlTrue, drawing convex polygons on certain systems may be accelerated. This feature should only be used when you are sure that the points provided form a convex contour. If this is not the case the result may be unpredictable.

Parameters

palette	The palette to use for the fill color of the polygon.
first	The starting point of the polyline.
count	The number of points.
others	The other points of the polyline.
convex	Flag for convex polygons.

Reimplemented from IlvPort.

virtual void IlvSystemPort::fillRectangle	(	const IlvPalette *	palette,
		const IlvRect &	rect
	)		const

virtual

Fills the given rectangle.

Fills the rectangle specified by rect.

Parameters

palette	The palette to use for the fill color of the rectangle.
rect	The rectangle to fill.

Reimplemented from IlvPort.

Reimplemented in IlvWindowsVirtualDevice.

virtual void IlvSystemPort::fillRoundRectangle	(	const IlvPalette *	palette,
		const IlvRect &	rect,
		IlUShort	radius
	)		const

virtual

Fills a round rectangle.

Parameters

palette	The palette used for drawing.
rect	The rectangle that is drawn.
radius	The radius of the round rectangle corners.

Reimplemented from IlvPort.

static IlvBitmapData* IlvSystemPort::GetBitmapData	(	IlvSystemPort *	port,
		const IlvRect *	rect = `0`
	)

static

Creates an IlvBitmapData from a rectangular area in an IlvSystemPort.

Parameters

port	The port to create a bitmap data from.
rect	The rectangular area in port.

Returns: The bitmap data created from the port.

IlvWindowsHandle IlvSystemPort::getDC ( ) const

Gets the Windows Handle Device Context.

This Windows-specific member function is called internally to retrieve the HDC used to draw on the port.

Returns: The Windows HDC.

virtual IlBoolean IlvSystemPort::initDevice	(	const char *	filename,
		IlvRect *	clip = `0`
	)

virtual

Initializes the dump device.

Initializes the dump device so that it writes its result in the filename file. This member function must be called before any other class member function. The region to be dumped is clipped by the bbox parameter. This member function sets the global clip with bbox set as the parameter to be used throughout the device lifespan.

Parameters

filename	Is usually used to indicate the output filename of the dump.
clip	The clipping rectangle to be used when drawing.

Implements IlvPort.

Reimplemented in IlvWindowsDevice, and IlvWindowsVirtualDevice.

virtual IlBoolean IlvSystemPort::isABitmap ( ) const

virtual

Indicates that this port is a bitmap (not a view or a dump device).

The default implementation in class IlvPort returns IlFalse. The method is overriden in class IlvBitmap to return IlTrue.

Returns: IlTrue if the port is a bitmap, otherwise IlFalse.

Reimplemented from IlvPort.

Reimplemented in IlvBitmap.

virtual IlBoolean IlvSystemPort::isASystemPort ( ) const

virtual

Indicates that this port is a true system port (not a dump device).

The default implementation in class IlvPort returns IlFalse. The method is overriden in class IlvSystemPort to return IlTrue.

Returns: IlTrue if this port is a true system port, otherwise IlFalse.

Reimplemented from IlvPort.

virtual IlBoolean IlvSystemPort::isBad ( ) const

virtual

Indicates whether this port is valid.

Indicates whether the display system can allocate the system-dependent part of the IlvPort. You must not use this port if it is "bad".

Returns: IlTrue if the display system can not allocate the system-dependent part of the IlvPort.

Implements IlvPort.

Reimplemented in IlvWindowsVirtualDevice.

virtual IlBoolean IlvSystemPort::newPage ( ) const

virtual

Produces an output page and prepares for a new page.

Produces an output page and prepares the dump device for a new page. If there has been an error, you should stop producing output data.

Returns: IlFalse if there has been an error.

Implements IlvPort.

Reimplemented in IlvWindowsDevice, and IlvWindowsVirtualDevice.

void IlvSystemPort::releaseDC ( )

Releases the Windows Handle Device Context.

This Windows-specific member function is called internally to release the HDC used to draw on the port. \ Since the HDC may be cached, it might not be released after drawing.

virtual void IlvSystemPort::send ( const char * string ) const

virtual

Sends character strings to an output device.

Sends any character string to an output device to send information to the device.

Parameters

string The string sent to the device. It is the responsibility of the device to interpret this string and perform the proper job.

Implements IlvPort.

Reimplemented in IlvWindowsDevice.

virtual void IlvSystemPort::setTransformer ( const IlvTransformer & t )

virtual

Applies another transformer to the coordinates provided for the drawing functions.

Parameters

t	The transformer that is applied.

Implements IlvPort.

Reimplemented in IlvContainer, and IlvWindowsVirtualDevice.

virtual void IlvSystemPort::stretchBitmap	(	const IlvPalette *	palette,
		const IlvPoint &	to,
		const IlvBitmap *	src,
		const IlvTransformer &	t,
		const IlvRect *	clip = `0`
	)		const

virtual

Stretches a bitmap.

Draws the bitmap src in the point to, applying the transformation t. (In a Windows environment, you can only zoom in on the object, you cannot rotate.) The result is displayed in the current object.

Parameters

palette	The palette used for drawing.
to	The point to stretch the bitmap to.
src	The bitmap to stretch.
t	The transformation to apply to the bitmap.
clip	The destination clip area.

Implements IlvPort.

virtual void IlvSystemPort::stretchBitmap	(	const IlvPalette *	palette,
		const IlvRect &	from,
		const IlvBitmap *	src,
		const IlvRect *	clip = `0`
	)		const

virtual

Stretches a bitmap.

Stretches the dimensions from in the bitmap src to correspond with the size of this IlvPort object. The result is displayed in the current port with the palette palette, and clipped by the parameter clip.

Parameters

palette	The palette used for drawing.
from	The location of the source area.
src	The bitmap to stretch.
clip	The destination clip rectangle.

Implements IlvPort.

virtual void IlvSystemPort::stretchBitmapData	(	const IlvPalette *	palette,
		const IlvBitmapData *	src,
		const IlvRect &	from,
		const IlvRect &	to,
		IlBoolean	opaque = `IlFalse`
	)		const

virtual

Draws a bitmap data.

This method allows bitmap datas to be drawn. If the bitmap data has per pixel alpha, then it is composed with the underlying graphics.

Parameters

palette	The palette used for drawing.
src	The bitmap data to draw.
from	The source rectangle in the bitmap data.
to	The destination rectangle.
opaque	A Boolean value indicating whether per pixel alpha should be taken into account (`IlTrue` indicates that no per pixel alpha is used).

Implements IlvPort.

virtual void IlvSystemPort::stretchTransparentBitmap	(	const IlvPalette *	palette,
		const IlvPoint &	to,
		const IlvBitmap *	src,
		const IlvTransformer &	t,
		const IlvRect *	clip = `0`
	)		const

virtual

Stretches a transparent bitmap.

Stretches the transparent bitmap src to the point to, applying the transformation t. The result is displayed in the current object.

Parameters

palette	The palette used for drawing.
to	The point to stretch the bitmap to.
src	The transparent bitmap to stretch.
t	The transformation to apply to the bitmap.
clip	The destination clip area.

Implements IlvPort.

virtual void IlvSystemPort::stretchTransparentBitmap	(	const IlvPalette *	palette,
		const IlvRect &	from,
		const IlvBitmap *	src,
		const IlvRect *	clip = `0`
	)		const

virtual

Stretches a transparent bitmap.

Stretches the source bitmap src in the rectangle from. The result is displayed in the bitmap src with the palette palette and clipped by parameter clip.

Parameters

palette	The palette used for drawing.
from	The location of the source area.
src	The transparent bitmap to stretch.
clip	The destination clip rectangle.

Implements IlvPort.

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