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IlvSystemPort Class Reference

Port class. More...

#include <ilviews/base/port.h>

Inheritance diagram for IlvSystemPort:
IlvPort IlvValueInterface IlvAbstractView IlvBitmap IlvWindowsVirtualDevice IlvScrollView IlvView IlvWindowsDevice IlvDrawingView IlvElasticView IlvViewCOMAdapter IlvContainer IlvContainer

Public Member Functions

 IlvSystemPort (IlvDisplay *display, IlvWindowsHandle HDC, IlvDim width=0, IlvDim height=0)
 Windows-specific constructor. More...
 
virtual IlBoolean applyValue (const IlvValue &)
 Apply an accessor. 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...
 
IlvDisplaygetDisplay () 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...
 
- Public Member Functions inherited from IlvValueInterface
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 IlvValuequeryValue (IlvValue &val) const
 Retrieves an accessor value. More...
 
virtual void queryValues (IlvValue *values, IlUShort count) const
 Retrieves multiple accessor values simultaneously. More...
 

Static Public Member Functions

static IlvBitmapDataGetBitmapData (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.

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 IlvPort.

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
displayThe display where this port is created.
HDCThe Windows Handle Device Context.
widthThe width of the port.
heightThe height of the port.

Member Function Documentation

virtual IlBoolean IlvSystemPort::applyValue ( const IlvValue value)
virtual

Apply an accessor.

This member function is called by changeValue() and changeValues() methods. It must not be called directly.
This method must be overriden by subclasses wishing to add a new accessor modifiable by changeValue().

Parameters
valueThe new value of the accessor.
Returns
IlTrue on success, otherwise IlFalse.

Reimplemented from IlvValueInterface.

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
rectThe rectangular area to clear.
reDrawIf 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
regionThe region to clear.
reDrawIf 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
rectThe 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
regionThe 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
paletteThe palette to use for the color of the arc.
rectThe bounding box of the ellipse for the arc.
startThe start angle in degrees.
rangeThe 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
paletteThe palette to use for the color of the bitmap.
srcThe source port of the image.
fromThe portion of src that is transferred.
toThe 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
paletteThe palette to use for the color of the bitmap.
srcThe source port of the image.
drawRectThe size of the transferred image.
clipThe destination clip rectangle.
alignmentThe position of the image in relation to the drawRect parameter.
transparentSpecifies 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
paletteThe palette used for drawing the string.
positionThe location where to draw the string. This indicates the y location of the base line, and the x coordinates depends on align.
stringThe text to draw.
lengthThe length of the string.
alignThe 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
paletteThe palette to use for the color of the line.
point1The position of the first point.
point2The 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
paletteThe palette to use for the color of the point.
pointThe 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
paletteThe palette to use for the color of the point.
countThe number of points to draw.
pointsThe 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
paletteThe palette to use for the color of the lines.
countThe number of points.
pointsThe 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
paletteThe palette to use for the color of the line.
firstThe starting point of the polyline.
countThe number of points.
othersThe 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
paletteThe palette to use for the color of the rectangle.
rectThe 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
paletteThe palette used for drawing.
rectThe rectangle that is drawn.
radiusThe 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 ith segment starts at the point from[i] and ends at the point to[i].

Parameters
paletteThe palette to use for the color of the segments.
countThe number of segments to draw.
fromThe starting point of the segment.
toThe 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
paletteThe palette used for drawing the string.
positionThe location where to draw the string. This indicates the y location of the base line, and the x coordinates depends on align.
stringThe text to draw.
lengthThe length of the string.
alignThe 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
paletteThe palette used to draw the string.
stringThe text to draw.
lengthThe length of the string.
tThe transformer to apply to the string.
clipThe 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
paletteThe palette to use for the color of the resulting bitmap.
srcThe system port.
fromThe portion of src that is transferred.
toThe 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
paletteThe palette to use for the fill color of the arc.
rectThe bounding box of the ellipse for the arc.
startThe start angle in degrees.
rangeThe 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
paletteThe palette to use for the fill color of the paths.
countThe number of paths provided in the IlvPointArray array.
pathArrayThe 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
paletteThe palette to use for the fill color of the polygon.
countThe number of points.
pointsThe points in the polyline.
convexFlag 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
paletteThe palette to use for the fill color of the polygon.
firstThe starting point of the polyline.
countThe number of points.
othersThe other points of the polyline.
convexFlag 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
paletteThe palette to use for the fill color of the rectangle.
rectThe 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
paletteThe palette used for drawing.
rectThe rectangle that is drawn.
radiusThe 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
portThe port to create a bitmap data from.
rectThe 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
filenameIs usually used to indicate the output filename of the dump.
clipThe 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
stringThe 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.

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

Parameters
tThe transformer that is applied.

Implements IlvPort.

Reimplemented in IlvContainer, 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
paletteThe palette used for drawing.
toThe point to stretch the bitmap to.
srcThe bitmap to stretch.
tThe transformation to apply to the bitmap.
clipThe 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
paletteThe palette used for drawing.
fromThe location of the source area.
srcThe bitmap to stretch.
clipThe 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
paletteThe palette used for drawing.
srcThe bitmap data to draw.
fromThe source rectangle in the bitmap data.
toThe destination rectangle.
opaqueA 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
paletteThe palette used for drawing.
toThe point to stretch the bitmap to.
srcThe transparent bitmap to stretch.
tThe transformation to apply to the bitmap.
clipThe 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
paletteThe palette used for drawing.
fromThe location of the source area.
srcThe transparent bitmap to stretch.
clipThe destination clip rectangle.

Implements IlvPort.


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