qcanvasspline(3qt) [redhat man page]
QCanvasSpline(3qt) QCanvasSpline(3qt) NAME
QCanvasSpline - Multi-bezier splines on a QCanvas SYNOPSIS
#include <qcanvas.h> Inherits QCanvasPolygon. Public Members QCanvasSpline ( QCanvas * canvas ) ~QCanvasSpline () void setControlPoints ( QPointArray ctrl, bool close = TRUE ) QPointArray controlPoints () const bool closed () const virtual int rtti () const DESCRIPTION
The QCanvasSpline class provides multi-bezier splines on a QCanvas. A QCanvasSpline is a sequence of 4-point bezier curves joined together to make a curved shape. You set the control points of the spline with setControlPoints(). If the bezier is closed(), then the first control point will be re-used as the last control point. Therefore, a closed bezier must have a multiple of 3 control points and an open bezier must have one extra point. The beziers are not necessarily joined "smoothly". To ensure this, set control points appropriately (general reference texts about beziers will explain this in detail). Like any other canvas item splines can be moved with QCanvasItem::move() and QCanvasItem::moveBy(), or by setting coordinates with QCanvasItem::setX(), QCanvasItem::setY() and QCanvasItem::setZ(). See also Graphics Classes and Image Processing Classes. MEMBER FUNCTION DOCUMENTATION
QCanvasSpline::QCanvasSpline ( QCanvas * canvas ) Create a spline with no control points on the canvas canvas. See also setControlPoints(). QCanvasSpline::~QCanvasSpline () Destroy the spline. bool QCanvasSpline::closed () const Returns TRUE if the control points are a closed set; otherwise returns FALSE. QPointArray QCanvasSpline::controlPoints () const Returns the current set of control points. See also setControlPoints() and closed(). int QCanvasSpline::rtti () const [virtual] Returns 8 (QCanvasItem::Rtti_Spline). See also QCanvasItem::rtti(). Reimplemented from QCanvasPolygon. void QCanvasSpline::setControlPoints ( QPointArray ctrl, bool close = TRUE ) Set the spline control points to ctrl. If close is TRUE, then the first point in ctrl will be re-used as the last point, and the number of control points must be a multiple of 3. If close is FALSE, one additional control point is required, and the number of control points must be one of (4, 7, 10, 13, ...). If the number of control points doesn't meet the above conditions, the number of points will be truncated to the largest number of points that do meet the requirement. Example: canvas/canvas.cpp. SEE ALSO
http://doc.trolltech.com/qcanvasspline.html http://www.trolltech.com/faq/tech.html COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com. See the license file included in the distribution for a complete license statement. AUTHOR
Generated automatically from the source code. BUGS
If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you. The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech. If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qcanvasspline.3qt) and the Qt version (3.1.1). Trolltech AS 9 December 2002 QCanvasSpline(3qt)
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QCanvasRectangle(3qt) QCanvasRectangle(3qt) NAME
QCanvasRectangle - Rectangle on a QCanvas SYNOPSIS
#include <qcanvas.h> Inherits QCanvasPolygonalItem. Public Members QCanvasRectangle ( QCanvas * canvas ) QCanvasRectangle ( const QRect & r, QCanvas * canvas ) QCanvasRectangle ( int x, int y, int width, int height, QCanvas * canvas ) ~QCanvasRectangle () int width () const int height () const void setSize ( int width, int height ) QSize size () const QRect rect () const virtual int rtti () const Protected Members virtual void drawShape ( QPainter & p ) virtual QPointArray chunks () const DESCRIPTION
The QCanvasRectangle class provides a rectangle on a QCanvas. This item paints a single rectangle which may have any pen() and brush(), but may not be tilted/rotated. For rotated rectangles, use QCanvasPolygon. The rectangle's size and initial position can be set in the constructor. The size can be set or changed later using setSize(). Use height() and width() to retrieve the rectangle's dimensions. The rectangle can be drawn on a painter with drawShape(). Like any other canvas item rectangles can be moved with QCanvasItem::move() and QCanvasItem::moveBy(), or by setting coordinates with QCanvasItem::setX(), QCanvasItem::setY() and QCanvasItem::setZ(). See also Graphics Classes and Image Processing Classes. MEMBER FUNCTION DOCUMENTATION
QCanvasRectangle::QCanvasRectangle ( QCanvas * canvas ) Constructs a rectangle at position (0,0) with both width and height set to 32 pixels on canvas. QCanvasRectangle::QCanvasRectangle ( const QRect & r, QCanvas * canvas ) Constructs a rectangle positioned and sized by r on canvas. QCanvasRectangle::QCanvasRectangle ( int x, int y, int width, int height, QCanvas * canvas ) Constructs a rectangle at position (x, y) and size width by height, on canvas. QCanvasRectangle::~QCanvasRectangle () Destroys the rectangle. QPointArray QCanvasRectangle::chunks () const [virtual protected] Simply calls QCanvasItem::chunks(). void QCanvasRectangle::drawShape ( QPainter & p ) [virtual protected] Draws the rectangle on painter p. Example: canvas/canvas.cpp. Reimplemented from QCanvasPolygonalItem. int QCanvasRectangle::height () const Returns the height of the rectangle. QRect QCanvasRectangle::rect () const Returns the integer-converted x(), y() position and size() of the rectangle as a QRect. int QCanvasRectangle::rtti () const [virtual] Returns 5 (QCanvasItem::Rtti_Rectangle). See also QCanvasItem::rtti(). Reimplemented from QCanvasPolygonalItem. void QCanvasRectangle::setSize ( int width, int height ) Sets the width and height of the rectangle. QSize QCanvasRectangle::size () const Returns the width() and height() of the rectangle. See also rect() and setSize(). int QCanvasRectangle::width () const Returns the width of the rectangle. SEE ALSO
http://doc.trolltech.com/qcanvasrectangle.html http://www.trolltech.com/faq/tech.html COPYRIGHT
Copyright 1992-2001 Trolltech AS, http://www.trolltech.com. See the license file included in the distribution for a complete license statement. AUTHOR
Generated automatically from the source code. BUGS
If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you. The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech. If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qcanvasrectangle.3qt) and the Qt version (3.1.1). Trolltech AS 9 December 2002 QCanvasRectangle(3qt)