Port class. More...

#include <ilviews/base/port.h>

Inheritance diagram for IlvPort:

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

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

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

virtual void	clip (const IlvRect *rect) const =0
	Limits the drawing to the given rectangular area. More...

virtual void	clip (const IlvRegion *region) const =0
	Limits the drawing to the given region. More...

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

virtual void	drawArc (const IlvPalette *palette, const IlvRect &rect, IlFloat start, IlFloat range) const =0
	Draws an arc. 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	drawBitmap (const IlvPalette palette, const IlvSystemPort src, const IlvRect &from, const IlvPoint &to) const =0
	Draws an image. More...

virtual void	drawBitmap (const IlvPalette palette, const IlvBitmap src, const IlvRect &drawRect, const IlvRegion *clip=0, IlvPosition alignment=IlvCenter, IlBoolean transparent=IlFalse) const
	Draws an image. 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	drawIString (const IlvPalette palette, const IlvPoint &position, const char string, int length, IlvPosition align=IlvLeft) const =0
	Draws a string at the given position. 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	drawLine (const IlvPalette *palette, const IlvPoint &point1, const IlvPoint &point2) const =0
	Draws a line between 2 points. 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	drawPoint (const IlvPalette *palette, const IlvPoint &point) const =0
	Draws a point at the given position. More...

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

virtual void	drawPolyLine (const IlvPalette palette, IlUInt count, const IlvPoint points) const =0
	Draws a series of connected lines. More...

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

virtual void	drawRectangle (const IlvPalette *palette, const IlvRect &rect) const
	Draws the given rectangle. 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	drawRoundRectangle (const IlvPalette *palette, const IlvRect &rect, IlUShort radius) const
	Draws a round rectangle. More...

virtual void	drawSegments (const IlvPalette palette, IlUInt count, const IlvPoint from, const IlvPoint *to) const
	Draws a set of segments. 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	drawString (const IlvPalette palette, const IlvPoint &position, const char string, int length, IlvPosition align=IlvLeft) const =0
	Draws a string at the given position. More...

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

virtual void	drawTransparentBitmap (const IlvPalette palette, const IlvSystemPort src, const IlvRect &from, const IlvPoint &to) const =0
	Draws a transparent bitmap. More...

virtual void	end ()=0
	Closed the dump device. More...

virtual void	fillArc (const IlvPalette *palette, const IlvRect &rect, IlFloat start, IlFloat range) const =0
	Fills the arc. More...

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

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

virtual void	fillPolyLine (const IlvPalette palette, IlUInt count, const IlvPoint points, IlBoolean convex=IlFalse) const =0
	Fills a polygon. More...

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

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

virtual void	fillRoundRectangle (const IlvPalette *palette, const IlvRect &rect, IlUShort radius) const
	Fills a round rectangle. 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	initDevice (const char filename, IlvRect clip=0)=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	isADevice () const
	Indicates that this port is 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 =0
	Indicates whether this port is valid. More...

virtual IlBoolean	newPage () const =0
	Produces an output page and prepares for a new page. More...

virtual void	send (const char *string) const =0
	Sends character strings to an output 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...

virtual void	setTransformer (const IlvTransformer &t)=0
	Applies another transformer to the coordinates provided for the drawing functions. More...

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

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

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

virtual void	stretchBitmapData (const IlvPalette palette, const IlvBitmapData src, const IlvRect &from, const IlvRect &to, IlBoolean opaque=IlFalse) const =0
	Draws a bitmap data. More...

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

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

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

Public Member Functions inherited from IlvValueInterface
virtual IlBoolean	applyValue (const IlvValue &value)
	Apply an accessor. More...

virtual IlBoolean	changeValue (const IlvValue &val)
	Changes the value of an accessor. More...

virtual IlBoolean	changeValues (const IlvValue *values, IlUShort count=0)
	Changes several accessor values simultaneously. More...

virtual void	getAccessors (const IlSymbol const names, const IlvValueTypeClass const **types, IlUInt &count) const
	Retrieves the list of available accessors of an object. More...

virtual const char *	getName () const
	Returns the name of the instance. The semantic and implementation of this method are defined by concrete subclasses. The default implementation returns `0`. More...

virtual IlvValue &	queryValue (IlvValue &val) const
	Retrieves an accessor value. More...

virtual void	queryValues (IlvValue *values, IlUShort count) const
	Retrieves multiple accessor values simultaneously. More...

Detailed Description

Port class.

Library: xviews or winviews or mviews (mutually exclusive)

IlvPort draws the display in one of two ways. The first is physically, as a screen or a bitmap using a class such as IlvSystemPort. The second is in a dedicated zone, as a file or a printer using a class such as IlvPsDevice. This area represents the zone on the screen where the user will draw.

See also: IlvAbstractView, IlvBitmap,

IlvDisplay, IlvSystemPort.

Accessors

Accessors provide a scriptable and uniform way to inspect and modify an object by using its base class methods IlvValueInterface::queryValue(), IlvValueInterface::queryValues(), IlvValueInterface::changeValue(), IlvValueInterface::changeValues(). This class inherits the accessors of its superclass IlvValueInterface.

Constructor & Destructor Documentation

§ IlvPort()

IlvPort::IlvPort ( IlvDisplay * display = 0 )

Constructor.

This constructor initializes a new instance of the IlvPort class and provides null dimensions for the port.

Member Function Documentation

§ clearArea() [1/2]

virtual void IlvPort::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 in IlvSystemPort.

§ clearArea() [2/2]

virtual void IlvPort::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 in IlvSystemPort.

§ clip() [1/2]

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

pure 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.

Implemented in IlvSystemPort, IlvWindowsVirtualDevice, and IlvPSDevice.

§ clip() [2/2]

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

pure 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.

Implemented in IlvSystemPort, IlvWindowsVirtualDevice, and IlvPSDevice.

§ composeAlpha()

void IlvPort::composeAlpha ( IlvIntensity alpha )

Composes the current alpha value of the port.

Parameters

alpha The alpha value to be composed with the current alpha value of the port.

§ drawArc()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawArrow()

virtual void IlvPort::drawArrow	(	const IlvPalette *	palette,
		const IlvPoint &	from,
		const IlvPoint &	to,
		IlFloat	position
	)		const

virtual

Draws an arrow.

Draws an arrow on the line defined by from and to. In the image, the arrow starts at the from position, and moves towards 1.0, stopping at the value defined by position.

Parameters

palette	The palette to use for the color of the arrow.
from	The starting position of the line segment.
to	The ending position of the line segment.
position	The location of the arrow along the segment.

§ drawBezier()

virtual void IlvPort::drawBezier	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points
	)		const

virtual

Draws a set of Bézier curves.

Draws a set of Bézier curves. The points parameter is a pointer to count points defining the curve. Each fragment of a Bézier curve is represented by four points. The first point indicates where the curve starts, and the fourth point indicates where it ends. The second and third points determine the orientation of the curve. Here is a simple example, with a single fragment:

Principle of the Bézier curves

The first point in the points array starts the curve. The next two points are control points, which determine the shape of the curve. The fourth point is both the last point of the first curve fragment and the starting point - if it exists - of the next fragment.

Parameters

palette	The palette used for drawing.
count	The number of points defining the curve.
points	The array of count points defining the curve.

Reimplemented in IlvPSDevice.

§ drawBitmap() [1/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawBitmap() [2/2]

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ drawClosedBezier()

virtual void IlvPort::drawClosedBezier	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points
	)		const

virtual

Appends a closing curve to a set of Bézier curves.

Similar to the member function drawBezier, except that a closing Bézier curve is appended in order to join the end to the start.

Parameters

palette	The palette used for drawing.
count	The number of points defining the curve.
points	The array of count points defining the curve.

Reimplemented in IlvPSDevice.

§ drawILabel()

virtual void IlvPort::drawILabel	(	const IlvPalette *	palette,
		const char *	label,
		int	length,
		const IlvRect &	drawRect,
		const IlvRegion *	clip = `0`,
		IlvPosition	align = `IlvCenter`
	)		const

virtual

Draws a label in a rectangle.

Similar to the member function drawLabel, but fills the label background with the palette background color. The drawing takes place in the clipping region specified in the clip parameter.

Parameters

palette	The palette used for drawing.
label	The string to draw.
length	The length of the string.
drawRect	The rectangle in which to draw the label.
clip	The clipping region.
align	Specifies the alignment of the label.

§ drawIString()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawLabel()

virtual void IlvPort::drawLabel	(	const IlvPalette *	palette,
		const char *	label,
		int	length,
		const IlvRect &	drawRect,
		const IlvRegion *	clip = `0`,
		IlvPosition	align = `IlvCenter`
	)		const

virtual

Draws a label in a rectangle.

Draws the string label in the rectangle drawRect respecting the alignment specified in the align parameter. The drawing takes place in the clipping region as called for in the clip parameter. The number of characters required to draw the rectangle is set in the length integer parameter. Instead of indicating a genuine length, you can supply a negative number such as -1. The text length is then computed internally, since string is thought of as a zero-terminated character array.

Parameters

palette	The palette used for drawing.
label	The string to draw.
length	The length of the string.
drawRect	The rectangle in which to draw the label.
clip	The clipping region.
align	Specifies the alignment of the label.

§ drawLine()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawMarker()

virtual void IlvPort::drawMarker	(	const IlvPalette *	palette,
		const IlvPoint &	location,
		IlvMarkerType	type = `IlvMarkerSquare`,
		IlUShort	size = `IlvDefaultMarkerSize`
	)		const

virtual

Draws a marker.

Draws a marker located at location with a size of size. The marker type is defined by type. See the IlvMarker class and the IlvDefaultMarkerSize constant for the values available for the type parameter.

Parameters

palette	The palette to use for the color of the marker.
location	The location of the marker.
type	The marker type.
size	The size of the marker, in pixels.

§ drawMnemonicLabel()

virtual void IlvPort::drawMnemonicLabel	(	const IlvPalette *	palette,
		const char *	label,
		const IlvRect &	drawRect,
		const IlvRegion *	clip = `0`,
		IlvPosition	align = `IlvCenter`,
		IlBoolean	underline = `IlTrue`
	)		const

virtual

Draws an underlined letter in a label.

An underlined letter in a word designates that this letter activates a special function key. This letter is preceded by a caret (^).

Parameters

palette	The palette used for drawing.
label	The string to draw.
drawRect	The rectangle in which to draw the label.
clip	The clipping region.
align	Specifies the alignment of the label.
underline	Specifies whether to underline the mnemonic character.

§ drawOutlineRectangle()

virtual void IlvPort::drawOutlineRectangle	(	const IlvPalette *	outlinePalette,
		const IlvPalette *	fillPalette,
		const IlvRect &	rect,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a rectangle with border effects.

Draws a rectangle whose color is defined by the fillPalette parameter and whose borderline color is defined in outlinePalette.

Parameters

outlinePalette	The palette to use for the color of the outline of the rectangle.
fillPalette	The palette to use for the color of the rectangle.
rect	The size and position of the rectangle.
clip	The destination clip rectangle.

§ drawPaths()

virtual void IlvPort::drawPaths	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPointArray *	paths
	)		const

virtual

Draws an array of paths as polylines.

Via the palette palette, defines the path in the count using path elements found in the parameter paths. Each path in the array is drawn as a polyline.

Parameters

palette	The palette used for drawing.
count	The number of paths in the array.
paths	The array of paths.

See also: IlvPointArray, IlvGraphicPath.

§ drawPoint()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawPoints()

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ drawPolyLine() [1/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawPolyLine() [2/2]

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ drawRectangle()

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ drawReliefDiamond()

virtual void IlvPort::drawReliefDiamond	(	const IlvPalette *	,
		const IlvPalette *	invertedPalette,
		const IlvPalette *	topShade,
		const IlvPalette *	bottomShade,
		const IlvRect &	bbox,
		IlUShort	thickness,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a diamond with depth effects.

Draws a diamond with colored shadows on its borders, located inside the bbox diamond parameter. The foreground color of the invertedPalette parameter is used to fill the main rectangle. The foreground color of the topShade parameter is used to fill the top and the left shadow areas. The foreground color of the bottomShade parameter is used to fill the right and bottom shadow areas. The thickness of the shadows is specified in the thickness parameter.

Parameters

invertedPalette	The palette used to fill the main rectangle.
topShade	The palette used to fill the top and left sides of the shadow.
bottomShade	The palette used to fill the right and bottom sides of the shadow.
bbox	The size and position of the rectangle.
thickness	The thickness of the shadow.
clip	The destination clip rectangle.

§ drawReliefRectangle()

virtual void IlvPort::drawReliefRectangle	(	const IlvPalette *	palette,
		const IlvPalette *	invertedPalette,
		const IlvPalette *	topShade,
		const IlvPalette *	bottomShade,
		const IlvRect &	bbox,
		IlUShort	thickness,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a filled rectangle with depth effects.

Draws a filled rectangle that has colored shadows on its borders (so it looks like a three-dimensional object) at the location specified in bbox. The foreground color of the invertedPalette parameter is used to fill the main rectangle. The foreground color of the topShade parameter is used to fill the top and the left shadow areas. The foreground color of the bottomShade parameter is used to fill the right and bottom shadow areas. The thickness of the shadows is specified in the thickness parameter.

Parameters

palette	The palette used for drawing.
invertedPalette	The palette to use for the fill color of the main rectangle.
topShade	The palette used to fill the top and left sides of the shadow.
bottomShade	The palette used to fill the right and bottom sides of the shadow.
bbox	The size and position of the rectangle.
thickness	The thickness of the shadow.
clip	The destination clip rectangle.

§ drawRoundRectangle()

virtual void IlvPort::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 in IlvSystemPort.

§ drawSegments()

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ drawShadowRectangle()

virtual void IlvPort::drawShadowRectangle	(	const IlvPalette *	palette,
		const IlvPalette *	invertedPalette,
		const IlvRect &	bbox,
		IlUShort	thickness,
		IlvPosition	shadowPosition,
		const IlvRegion *	clip = `0`
	)		const

virtual

Draws a filled rectangle with its shadow.

Draws a filled rectangle with its shadow at the location specified in bbox. The foreground color of the invertedPalette parameter is used to draw the rectangle borders as well as the shadow. The thickness and position of the shadow are specified in the thickness and shadowPosition parameters.

Parameters

palette	The palette to use for the fill color of the main rectangle.
invertedPalette	The palette to use for the color of the rectangle borders and the shadow.
bbox	The location of the filled rectangle.
thickness	The thickness of the shadow.
shadowPosition	The position of the shadow.
clip	The destination clip rectangle.

§ drawString()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawTransformedString()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ drawTransparentBitmap()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ end()

virtual void IlvPort::end ( )

pure virtual

Closed the dump device.

Closes the dump device and does all the necessary cleaning.

Implemented in IlvSystemPort, IlvWindowsDevice, IlvWindowsVirtualDevice, and IlvPSDevice.

§ fillArc()

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ fillBezier()

virtual void IlvPort::fillBezier	(	const IlvPalette *	palette,
		IlUInt	count,
		const IlvPoint *	points
	)		const

virtual

Fills an area specified by a set of Bézier curves.

Parameters

palette	The palette used for drawing.
count	The number of points defining the curve.
points	The array of count points defining the curve.

Reimplemented in IlvPSDevice.

§ fillPaths()

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ fillPolyLine() [1/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ fillPolyLine() [2/2]

virtual void IlvPort::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 in IlvSystemPort, and IlvPSDevice.

§ fillRectangle()

virtual void IlvPort::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 in IlvSystemPort, IlvPSDevice, and IlvWindowsVirtualDevice.

§ fillRoundRectangle()

virtual void IlvPort::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 in IlvSystemPort.

§ getAlpha()

IlvIntensity IlvPort::getAlpha ( ) const

Provides the alpha value of the port.

The default value is IlvFullIntensity.

Returns: The alpha value of the port.

§ getAntialiasingMode()

IlvAntialiasingMode IlvPort::getAntialiasingMode ( ) const

Provides the anti-aliasing mode of the port.

The default value is IlvDefaultAntialiasingMode.

Returns: The anti-aliasing mode of the port.

§ getDisplay()

IlvDisplay* IlvPort::getDisplay ( ) const

Returns a pointer to the IlvDisplay of this port.

Returns: A pointer to the IlvDisplay object for which this port is created.

§ height()

IlvDim IlvPort::height ( ) const

Provides the height of the port.

Returns: The height of the port.

§ initDevice()

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

pure 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.

Implemented in IlvSystemPort, IlvWindowsDevice, IlvWindowsVirtualDevice, and IlvPSDevice.

§ isABitmap()

virtual IlBoolean IlvPort::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 in IlvBitmap, and IlvSystemPort.

§ isADevice()

virtual IlBoolean IlvPort::isADevice ( ) const

virtual

Indicates that this port is a dump device.

The default implementation in class IlvPort returns IlFalse. The method is overriden in class IlvPSDevice and in IlvWindowsVirtualDevice to return IlTrue.

Returns: IlTrue when the port is a dump device, otherwise IlFalse.

Reimplemented in IlvPSDevice, and IlvWindowsVirtualDevice.

§ isASystemPort()

virtual IlBoolean IlvPort::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 in IlvSystemPort.

§ isBad()

virtual IlBoolean IlvPort::isBad ( ) const

pure 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.

Implemented in IlvSystemPort, IlvWindowsVirtualDevice, and IlvPSDevice.

§ newPage()

virtual IlBoolean IlvPort::newPage ( ) const

pure 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.

Implemented in IlvSystemPort, IlvWindowsDevice, IlvWindowsVirtualDevice, and IlvPSDevice.

§ send()

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

pure 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.

Implemented in IlvSystemPort, IlvWindowsDevice, and IlvPSDevice.

§ setAlpha()

void IlvPort::setAlpha ( IlvIntensity alpha )

Sets the alpha value of the port.

This value affects all the drawing operations that will take place in this port. Valid values are integers in the range 0 - IlvFullIntensity. A value of IlvFullIntensity means that the drawing will be opaque. A value of 0 means that the drawing will be transparent. Note that during a drawing operation, this alpha value is composed with the alpha value of the palette specified for the drawing operation.

Parameters

alpha The new alpha value for the port.

§ setAntialiasingMode()

void IlvPort::setAntialiasingMode ( IlvAntialiasingMode mode )

Sets the anti-aliasing mode of the port.

Parameters

mode	The new anti-aliasing mode of the port.

§ setTransformer()

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

pure virtual

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

Parameters

t	The transformer that is applied.

Implemented in IlvSystemPort, IlvContainer, IlvWindowsVirtualDevice, and IlvPSDevice.

§ size()

void IlvPort::size	(	IlvDim &	w,
		IlvDim &	h
	)		const

Gives the dimensions of the port.

Gives the horizontal (w) and vertical (h) dimensions of the port.

Parameters

w	The horizontal dimension of the port.
h	The vertical dimension of the port.

§ stretchBitmap() [1/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ stretchBitmap() [2/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ stretchBitmapData()

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

pure 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).

Implemented in IlvSystemPort, and IlvPSDevice.

§ stretchTransparentBitmap() [1/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ stretchTransparentBitmap() [2/2]

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

pure 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.

Implemented in IlvSystemPort, and IlvPSDevice.

§ width()

IlvDim IlvPort::width ( ) const

Provides the width of the port.

Returns: The width of the port.

Public Member Functions

Detailed Description

Accessors

Constructor & Destructor Documentation

§ IlvPort()

Member Function Documentation

§ clearArea() [1/2]

§ clearArea() [2/2]

§ clip() [1/2]

§ clip() [2/2]

§ composeAlpha()

§ drawArc()

§ drawArrow()

§ drawBezier()

§ drawBitmap() [1/2]

§ drawBitmap() [2/2]

§ drawClosedBezier()

§ drawILabel()

§ drawIString()

§ drawLabel()

§ drawLine()

§ drawMarker()

§ drawMnemonicLabel()

§ drawOutlineRectangle()

§ drawPaths()

§ drawPoint()

§ drawPoints()

§ drawPolyLine() [1/2]

§ drawPolyLine() [2/2]

§ drawRectangle()

§ drawReliefDiamond()

§ drawReliefRectangle()

§ drawRoundRectangle()

§ drawSegments()

§ drawShadowRectangle()

§ drawString()

§ drawTransformedString()

§ drawTransparentBitmap()

§ end()

§ fillArc()

§ fillBezier()

§ fillPaths()

§ fillPolyLine() [1/2]

§ fillPolyLine() [2/2]

§ fillRectangle()

§ fillRoundRectangle()

§ getAlpha()

§ getAntialiasingMode()

§ getDisplay()

§ height()

§ initDevice()

§ isABitmap()

§ isADevice()

§ isASystemPort()

§ isBad()

§ newPage()

§ send()

§ setAlpha()

§ setAntialiasingMode()

§ setTransformer()

§ size()

§ stretchBitmap() [1/2]

§ stretchBitmap() [2/2]

§ stretchBitmapData()

§ stretchTransparentBitmap() [1/2]

§ stretchTransparentBitmap() [2/2]

§ width()