qwtdoublerect.3

linux下qt的第三方的一个类

.TH "QwtDoubleRect" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtDoubleRect \- 
.SH SYNOPSIS
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.PP
.SH "Detailed Description"
.PP 
The QwtDoubleRect class defines a size in double coordinates. 
.PP
Definition at line 108 of file qwt_double_rect.h.
.SS "Public Member Functions"

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.RI "\fBQwtDoubleRect\fP ()"
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.RI "\fBQwtDoubleRect\fP (double x1, double x2, double y1, double y2)"
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.RI "\fBQwtDoubleRect\fP (double x, double y, const \fBQwtDoubleSize\fP &)"
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.RI "bool \fBisNull\fP () const"
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.RI "bool \fBisEmpty\fP () const"
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.RI "bool \fBisValid\fP () const"
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.RI "\fBQwtDoubleRect\fP \fBnormalize\fP () const"
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.RI "double \fBx1\fP () const"
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.RI "double \fBx2\fP () const"
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.RI "double \fBy1\fP () const"
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.RI "double \fBy2\fP () const"
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.RI "double & \fBrx1\fP ()"
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.RI "double & \fBrx2\fP ()"
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.RI "double & \fBry1\fP ()"
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.RI "double & \fBry2\fP ()"
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.RI "void \fBsetX1\fP (double)"
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.RI "void \fBsetX2\fP (double)"
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.RI "void \fBsetY1\fP (double)"
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.RI "void \fBsetY2\fP (double)"
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.RI "\fBQwtDoublePoint\fP \fBcenter\fP () const"
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.RI "void \fBmoveX\fP (double x)"
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.RI "void \fBmoveY\fP (double y)"
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.RI "void \fBmove\fP (double x, double y)"
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.RI "void \fBmoveBy\fP (double dx, double dy)"
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.RI "void \fBmoveCenter\fP (const \fBQwtDoublePoint\fP &)"
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.RI "void \fBmoveCenter\fP (double dx, double dy)"
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.RI "void \fBsetRect\fP (double x1, double x2, double y1, double y2)"
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.RI "double \fBwidth\fP () const"
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.RI "double \fBheight\fP () const"
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.RI "\fBQwtDoubleSize\fP \fBsize\fP () const"
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.RI "void \fBsetWidth\fP (double w)"
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.RI "void \fBsetHeight\fP (double h)"
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.RI "void \fBsetSize\fP (const \fBQwtDoubleSize\fP &)"
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.RI "\fBQwtDoubleRect\fP \fBoperator|\fP (const \fBQwtDoubleRect\fP &r) const"
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.RI "\fBQwtDoubleRect\fP \fBoperator &\fP (const \fBQwtDoubleRect\fP &r) const"
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.RI "\fBQwtDoubleRect\fP & \fBoperator|=\fP (const \fBQwtDoubleRect\fP &r)"
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.RI "\fBQwtDoubleRect\fP & \fBoperator &=\fP (const \fBQwtDoubleRect\fP &r)"
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.RI "bool \fBoperator==\fP (const \fBQwtDoubleRect\fP &) const"
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.RI "bool \fBoperator!=\fP (const \fBQwtDoubleRect\fP &) const"
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.RI "bool \fBcontains\fP (const \fBQwtDoublePoint\fP &p, bool proper=FALSE) const"
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.RI "bool \fBcontains\fP (double x, double y, bool proper=FALSE) const"
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.RI "bool \fBcontains\fP (const \fBQwtDoubleRect\fP &r, bool proper=FALSE) const"
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.RI "\fBQwtDoubleRect\fP \fBunite\fP (const \fBQwtDoubleRect\fP &) const"
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.RI "\fBQwtDoubleRect\fP \fBintersect\fP (const \fBQwtDoubleRect\fP &) const"
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.RI "bool \fBintersects\fP (const \fBQwtDoubleRect\fP &) const"
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.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtDoubleRect::QwtDoubleRect ()"
.PP
Constructs an rectangle with all components set to 0.0. 
.PP
Definition at line 295 of file qwt_double_rect.cpp.
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Referenced by operator &(), and operator|().
.SS "QwtDoubleRect::QwtDoubleRect (double x1, double x2, double y1, double y2)"
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Constructs an rectangle with x1 to x2 as x-range and, y1 to y2 as y-range. Definition at line 308 of file qwt_double_rect.cpp.
.SS "QwtDoubleRect::QwtDoubleRect (double x, double y, const \fBQwtDoubleSize\fP & size)"
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Constructs an rectangle with x1 to x1 + size.width() as x-range and, y1 to y1 + size.height() as y-range. Definition at line 322 of file qwt_double_rect.cpp.
.SH "Member Function Documentation"
.PP 
.SS "\fBQwtDoublePoint\fP QwtDoubleRect::center () const"
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Returns the center point of the rectangle. 
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Definition at line 478 of file qwt_double_rect.cpp.
.PP
Referenced by QwtPlotZoomer::end().
.SS "bool QwtDoubleRect::contains (const \fBQwtDoubleRect\fP & other, bool proper = \fCFALSE\fP) const"
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Returns TRUE if the rectangle other is inside this rectangle; otherwise returns FALSE.
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If proper is TRUE, this function returns TRUE only if other is entirely inside (not on the edge). Definition at line 521 of file qwt_double_rect.cpp.
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References contains(), d_x1, d_x2, d_y1, and d_y2.
.SS "bool QwtDoubleRect::contains (double x, double y, bool proper = \fCFALSE\fP) const"
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Returns TRUE if the point (x, y) is inside or on the edge of the rectangle; otherwise returns FALSE.
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If proper is TRUE, this function returns TRUE only if p is inside (not on the edge). Definition at line 492 of file qwt_double_rect.cpp.
.SS "bool QwtDoubleRect::contains (const \fBQwtDoublePoint\fP & p, bool proper = \fCFALSE\fP) const"
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Returns TRUE if the point p is inside or on the edge of the rectangle; otherwise returns FALSE.
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If proper is TRUE, this function returns TRUE only if p is inside (not on the edge). Definition at line 508 of file qwt_double_rect.cpp.
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References QwtDoublePoint::x(), and QwtDoublePoint::y().
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Referenced by contains().
.SS "double QwtDoubleRect::height () const"
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Returns the height. 
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Definition at line 397 of file qwt_double_rect.h.
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Referenced by moveCenter(), moveY(), and size().
.SS "\fBQwtDoubleRect\fP QwtDoubleRect::intersect (const \fBQwtDoubleRect\fP & other) const"
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Returns the intersection of this rectangle and rectangle other. r.intersect(s) is equivalent to r&s. Definition at line 400 of file qwt_double_rect.cpp.
.SS "bool QwtDoubleRect::intersects (const \fBQwtDoubleRect\fP & other) const"
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Returns TRUE if this rectangle intersects with rectangle other; otherwise returns FALSE. Definition at line 410 of file qwt_double_rect.cpp.
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References d_x1, d_x2, d_y1, and d_y2.
.SS "bool QwtDoubleRect::isEmpty () const"
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Returns TRUE if the rectangle is a empty rectangle; otherwise returns FALSE.
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A rect is null when \fBx1()\fP >= \fBx2()\fP && \fBy1()\fP >= \fBy2()\fP. Definition at line 302 of file qwt_double_rect.h.
.SS "bool QwtDoubleRect::isNull () const"
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Returns TRUE if the rectangle is a null rectangle; otherwise returns FALSE.
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A rect is null when \fBx1()\fP == \fBx2()\fP && \fBy1()\fP == \fBy2()\fP. Definition at line 291 of file qwt_double_rect.h.
.SS "bool QwtDoubleRect::isValid () const"
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Returns TRUE if the rectangle is a valid rectangle; otherwise returns FALSE.
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A rect is valid when \fBx1()\fP <= \fBx2()\fP && \fBy1()\fP <= \fBy2()\fP. Definition at line 313 of file qwt_double_rect.h.
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Referenced by operator|(), and QwtPlot::updateAxes().
.SS "void QwtDoubleRect::move (double x, double y)"
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moves \fBx1()\fP to x and \fBy1()\fP to y, leaving the size unchanged 
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Definition at line 547 of file qwt_double_rect.cpp.
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References moveX(), and moveY().
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Referenced by moveCenter().
.SS "void QwtDoubleRect::moveBy (double dx, double dy)"
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moves \fBx1()\fP by dx and \fBy1()\fP by dy. leaving the size unchanged 
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Definition at line 555 of file qwt_double_rect.cpp.
.SS "void QwtDoubleRect::moveCenter (double dx, double dy)"
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moves the center to (x, y), leaving the size unchanged 
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Definition at line 572 of file qwt_double_rect.cpp.
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References height(), move(), and width().
.SS "void QwtDoubleRect::moveCenter (const \fBQwtDoublePoint\fP &)"
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moves the center to pos, leaving the size unchanged 
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Definition at line 565 of file qwt_double_rect.cpp.
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References QwtDoublePoint::x(), and QwtDoublePoint::y().
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Referenced by QwtPlotZoomer::end().
.SS "void QwtDoubleRect::moveX (double x)"
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moves \fBx1()\fP to x, leaving the size unchanged 
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Definition at line 529 of file qwt_double_rect.cpp.
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References width().
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Referenced by move().
.SS "void QwtDoubleRect::moveY (double y)"
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moves \fBy1()\fP to y, leaving the size unchanged 
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Definition at line 538 of file qwt_double_rect.cpp.
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References height().
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Referenced by move().
.SS "\fBQwtDoubleRect\fP QwtDoubleRect::normalize () const"
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Returns a normalized rectangle, i.e. a rectangle that has a non-negative width and height.
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It swaps x1 and x2 if \fBx1()\fP > \fBx2()\fP, and swaps y1 and y2 if \fBy1()\fP > \fBy2()\fP. Definition at line 359 of file qwt_double_rect.cpp.
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References d_x1, d_x2, d_y1, and d_y2.
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Referenced by QwtPlotZoomer::end(), and QwtPlotZoomer::zoom().
.SS "\fBQwtDoubleRect\fP QwtDoubleRect::operator & (const \fBQwtDoubleRect\fP & other) const"
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Returns the intersection of this rectangle and rectangle other. Returns an empty rectangle if there is no intersection. Definition at line 454 of file qwt_double_rect.cpp.
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References d_x1, d_x2, d_y1, d_y2, and QwtDoubleRect().
.SS "\fBQwtDoubleRect\fP & QwtDoubleRect::operator &= (const \fBQwtDoubleRect\fP & r)"
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Intersects this rectangle with rectangle other. 
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Definition at line 470 of file qwt_double_rect.cpp.
.SS "bool QwtDoubleRect::operator!= (const \fBQwtDoubleRect\fP &) const"
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Returns TRUE if this rect and other are different; otherwise returns FALSE. 
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Definition at line 426 of file qwt_double_rect.cpp.
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References operator==().
.SS "bool QwtDoubleRect::operator== (const \fBQwtDoubleRect\fP &) const"
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Returns TRUE if this rect and other are equal; otherwise returns FALSE. 
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Definition at line 418 of file qwt_double_rect.cpp.
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References d_x1, d_x2, d_y1, and d_y2.
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Referenced by operator!=().
.SS "\fBQwtDoubleRect\fP QwtDoubleRect::operator| (const \fBQwtDoubleRect\fP & other) const"
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Returns the bounding rectangle of this rectangle and rectangle other. The bounding rectangle of a nonempty rectangle and an empty or invalid rectangle is defined to be the nonempty rectangle. Definition at line 437 of file qwt_double_rect.cpp.
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References d_x1, d_x2, d_y1, d_y2, isValid(), and QwtDoubleRect().
.SS "\fBQwtDoubleRect\fP & QwtDoubleRect::operator|= (const \fBQwtDoubleRect\fP & r)"
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Unites this rectangle with rectangle other. 
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Definition at line 462 of file qwt_double_rect.cpp.
.SS "double & QwtDoubleRect::rx1 ()"
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Returns a reference to x1. 
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Definition at line 343 of file qwt_double_rect.h.
.SS "double & QwtDoubleRect::rx2 ()"
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Returns a reference to x2. 
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Definition at line 349 of file qwt_double_rect.h.
.SS "double & QwtDoubleRect::ry1 ()"
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Returns a reference to y1. 
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Definition at line 355 of file qwt_double_rect.h.
.SS "double & QwtDoubleRect::ry2 ()"
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Returns a reference to y2. 
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Definition at line 361 of file qwt_double_rect.h.
.SS "void QwtDoubleRect::setHeight (double h)"
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Set the height, by y2 = y1 + h;. 
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Definition at line 415 of file qwt_double_rect.h.
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Referenced by setSize().
.SS "void QwtDoubleRect::setRect (double x1, double x2, double y1, double y2)"
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Set the x-range from x1 to x2 and the y-range from y1 to y2. Definition at line 333 of file qwt_double_rect.cpp.
.SS "void QwtDoubleRect::setSize (const \fBQwtDoubleSize\fP & size)"
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Sets the size of the rectangle to size. Changes x2 and y2 only. Definition at line 346 of file qwt_double_rect.cpp.
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References QwtDoubleSize::height(), setHeight(), setWidth(), and QwtDoubleSize::width().
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Referenced by QwtPlotZoomer::end().
.SS "void QwtDoubleRect::setWidth (double w)"
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Set the width, by x2 = x1 + w;. 
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Definition at line 409 of file qwt_double_rect.h.
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Referenced by setSize().
.SS "void QwtDoubleRect::setX1 (double)"
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Set x1. 
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Definition at line 367 of file qwt_double_rect.h.
.SS "void QwtDoubleRect::setX2 (double)"
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Set x2. 
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Definition at line 373 of file qwt_double_rect.h.
.SS "void QwtDoubleRect::setY1 (double)"
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Set y1. 
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Definition at line 379 of file qwt_double_rect.h.
.SS "void QwtDoubleRect::setY2 (double)"
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Set y2. 
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Definition at line 385 of file qwt_double_rect.h.
.SS "\fBQwtDoubleSize\fP QwtDoubleRect::size () const"
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Returns the size. 
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Definition at line 403 of file qwt_double_rect.h.
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References height(), and width().
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Referenced by QwtPlotZoomer::end().
.SS "\fBQwtDoubleRect\fP QwtDoubleRect::unite (const \fBQwtDoubleRect\fP & other) const"
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Returns the bounding rectangle of this rectangle and rectangle other. r.unite(s) is equivalent to r|s. Definition at line 390 of file qwt_double_rect.cpp.
.SS "double QwtDoubleRect::width () const"
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Returns the width. 
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Definition at line 391 of file qwt_double_rect.h.
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Referenced by moveCenter(), moveX(), and size().
.SS "double QwtDoubleRect::x1 () const"
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Returns x1. 
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Definition at line 319 of file qwt_double_rect.h.
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Referenced by QwtPlotZoomer::move(), QwtPlotZoomer::moveBy(), QwtPlotZoomer::rescale(), QwtPlotPicker::transform(), and QwtPlot::updateAxes().
.SS "double QwtDoubleRect::x2 () const"
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Returns x2. 
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Definition at line 325 of file qwt_double_rect.h.
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Referenced by QwtPlotZoomer::rescale(), QwtPlotPicker::transform(), and QwtPlot::updateAxes().
.SS "double QwtDoubleRect::y1 () const"
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Returns y1. 
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Definition at line 331 of file qwt_double_rect.h.
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Referenced by QwtPlotZoomer::move(), QwtPlotZoomer::moveBy(), QwtPlotZoomer::rescale(), QwtPlotPicker::transform(), and QwtPlot::updateAxes().
.SS "double QwtDoubleRect::y2 () const"
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Returns y2. 
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Definition at line 337 of file qwt_double_rect.h.
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Referenced by QwtPlotZoomer::rescale(), QwtPlotPicker::transform(), and QwtPlot::updateAxes().

.SH "Author"
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