qwtscaleif.3

来自「This a framework to test new ideas in tr」· 3 代码 · 共 225 行

.TH "QwtScaleIf" 3 "4 Nov 2003" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtScaleIf \- 
.SH SYNOPSIS
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.PP
Inherited by \fBQwtKnob\fP, \fBQwtSlider\fP, and \fBQwtThermo\fP.
.PP
.SH "Detailed Description"
.PP 
An interface class for widgets containing a scale. 

This interface class is used to provide classes a \fBQwtScaleDraw\fP and an interface to access that scale. 
.PP
.SS "Public Member Functions"

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.RI "\fBQwtScaleIf\fP ()"
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.RI "virtual \fB~QwtScaleIf\fP ()"
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.RI "void \fBsetScale\fP (double vmin, double vmax, int logarithmic=0)"
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.RI "void \fBsetScale\fP (double vmin, double vmax, double step, int logarithmic=0)"
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.RI "void \fBsetScale\fP (const  \fBQwtScaleDiv\fP &s)"
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.RI "void \fBsetScaleMaxMajor\fP (int ticks)"
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.RI "void \fBsetScaleMaxMinor\fP (int ticks)"
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.RI "void \fBautoScale\fP ()"
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.RI "int \fBscaleMaxMinor\fP () const "
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.RI "int \fBscaleMaxMajor\fP () const "
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.RI "void \fBsetScaleDraw\fP (\fBQwtScaleDraw\fP *)"
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.RI "const  \fBQwtScaleDraw\fP * \fBscaleDraw\fP () const "
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.SS "Protected Member Functions"

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.RI "bool \fBhasUserScale\fP ()"
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.RI "virtual void \fBscaleChange\fP ()=0"
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.RI "\fBQwtScaleDraw\fP * \fBscaleDraw\fP ()"
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.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtScaleIf::QwtScaleIf ()"
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Constructor. 
.SS "QwtScaleIf::~\fBQwtScaleIf\fP ()\fC [virtual]\fP"
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Destructor. 
.SH "Member Function Documentation"
.PP 
.SS "void QwtScaleIf::autoScale ()"
.PP
Advise the widget to control the scale range internally. Autoscaling is on by default. 
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\fBSee also:\fP
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\fBQwtScaleIf::setScale()\fP 
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.SS "bool QwtScaleIf::hasUserScale ()\fC [protected]\fP"
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Check for user-defined scale. 
.SS "virtual void QwtScaleIf::scaleChange ()\fC [protected, pure virtual]\fP"
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Notify changed scale. Implemented in \fBQwtSlider\fP, and \fBQwtThermo\fP.
.SS "\fBQwtScaleDraw\fP * QwtScaleIf::scaleDraw ()\fC [protected]\fP"
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\fBReturns:\fP
.RS 4
scale draw 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleIf::setScaleDraw\fP 
.RE
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.SS "const  \fBQwtScaleDraw\fP * QwtScaleIf::scaleDraw () const"
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\fBReturns:\fP
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scale draw 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleIf::setScaleDraw\fP 
.RE
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.SS "int QwtScaleIf::scaleMaxMajor () const"
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\fBReturns:\fP
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max. number of major tick intervals 
.RE
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.SS "int QwtScaleIf::scaleMaxMinor () const"
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\fBReturns:\fP
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max. number of minor tick intervals 
.RE
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.SS "void QwtScaleIf::setScale (const \fBQwtScaleDiv\fP & s)"
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Assign a user-defined scale division 
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\fBParameters:\fP
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\fIs\fP scale division 
.RE
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.SS "void QwtScaleIf::setScale (double vmin, double vmax, double step, int logarithmic = 0)"
.PP
Specify a user-defined scale. By default, the widget is supposed to control the range of its scale automatically, but sometimes it is desirable to have a user-defined scale which is not in sync with the widget's range, e.g. if a logarithmic scale is needed (sliders don't support that) or if the scale is required to have a fixed range (say 0...100%), independent of the widget's range. 
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\fBParameters:\fP
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\fIvmin\fP 
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\fIvmax\fP interval boundaries 
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\fIstep\fP major step size 
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\fIlogarithmic\fP If != 0, build a logarithmic scale 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleIf::autoScale()\fP 
.RE
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.SS "void QwtScaleIf::setScale (double vmin, double vmax, int logarithmic = 0)"
.PP
Specify a user-defined scale. By default, the widget is supposed to control the range of its scale automatically, but sometimes it is desirable to have a user-defined scale which is not in sync with the widget's range, e.g. if a logarithmic scale is needed (sliders don't support that) or if the scale is required to have a fixed range (say 0...100%), independent of the widget's range. 
.PP
\fBParameters:\fP
.RS 4
\fIvmin\fP 
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\fIvmax\fP boundary values 
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\fIlogarithmic\fP If != 0, Build a logarithmic scale 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleIf::autoScale()\fP 
.RE
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.SS "void QwtScaleIf::setScaleDraw (\fBQwtScaleDraw\fP * sd)"
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Set a scale draw sd has to be created with new and will be deleted in \fBQwtScaleIf::~QwtScaleIf\fP or the next call of \fBQwtScaleIf::setScaleDraw\fP. 
.SS "void QwtScaleIf::setScaleMaxMajor (int ticks)"
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Set the maximum number of major tick intervals. The scale's major ticks are calculated automatically such that the number of major intervals does not exceed ticks. The default value is 5. 
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\fBParameters:\fP
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\fIticks\fP maximal number of major ticks. 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleDraw\fP 
.RE
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.SS "void QwtScaleIf::setScaleMaxMinor (int ticks)"
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Set the maximum number of minor tick intervals. The scale's minor ticks are calculated automatically such that the number of minor intervals does not exceed ticks. The default value is 3. 
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\fBParameters:\fP
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\fIticks\fP 
.RE
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\fBSee also:\fP
.RS 4
\fBQwtScaleDraw\fP 
.RE
.PP


.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code.