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doc/man/man3/QwtAlphaColorMap.3 Normal file
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.TH "QwtAlphaColorMap" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*-
.ad l
.nh
.SH NAME
QwtAlphaColorMap \- \fBQwtAlphaColorMap\fP varies the alpha value of a color\&.
.SH SYNOPSIS
.br
.PP
.PP
\fC#include <qwt_color_map\&.h>\fP
.PP
Inherits \fBQwtColorMap\fP\&.
.SS "Public Member Functions"
.in +1c
.ti -1c
.RI "\fBQwtAlphaColorMap\fP (\fBconst\fP QColor &=QColor(Qt::gray))"
.br
.RI "Constructor\&. "
.ti -1c
.RI "virtual \fB~QwtAlphaColorMap\fP ()"
.br
.RI "Destructor\&. "
.ti -1c
.RI "void \fBsetAlphaInterval\fP (int \fBalpha1\fP, int \fBalpha2\fP)"
.br
.ti -1c
.RI "int \fBalpha1\fP () \fBconst\fP"
.br
.ti -1c
.RI "int \fBalpha2\fP () \fBconst\fP"
.br
.ti -1c
.RI "void \fBsetColor\fP (\fBconst\fP QColor &)"
.br
.ti -1c
.RI "QColor \fBcolor\fP () \fBconst\fP"
.br
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.RI "virtual QRgb \fBrgb\fP (\fBconst\fP \fBQwtInterval\fP &, double value) \fBconst\fP override"
.br
.RI "Map a value of a given interval into a alpha value\&. "
.in -1c
.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP
\fBQwtAlphaColorMap\fP varies the alpha value of a color\&.
.PP
Definition at line 147 of file qwt_color_map\&.h\&.
.SH "Constructor & Destructor Documentation"
.PP
.SS "QwtAlphaColorMap::QwtAlphaColorMap (\fBconst\fP QColor & color = \fCQColor( Qt::gray )\fP)\fC [explicit]\fP"
.PP
Constructor\&. The alpha interval is initialized by 0 to 255\&.
.PP
\fBParameters\fP
.RS 4
\fIcolor\fP Color of the map
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetColor()\fP, \fBsetAlphaInterval()\fP
.RE
.PP
.PP
Definition at line 539 of file qwt_color_map\&.cpp\&.
.SH "Member Function Documentation"
.PP
.SS "int QwtAlphaColorMap::alpha1 () const"
.PP
\fBReturns\fP
.RS 4
First alpha coordinate
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetAlphaInterval()\fP
.RE
.PP
.PP
Definition at line 600 of file qwt_color_map\&.cpp\&.
.SS "int QwtAlphaColorMap::alpha2 () const"
.PP
\fBReturns\fP
.RS 4
Second alpha coordinate
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetAlphaInterval()\fP
.RE
.PP
.PP
Definition at line 609 of file qwt_color_map\&.cpp\&.
.SS "QColor QwtAlphaColorMap::color () const"
.PP
\fBReturns\fP
.RS 4
the color
.RE
.PP
\fBSee also\fP
.RS 4
\fBsetColor()\fP
.RE
.PP
.PP
Definition at line 571 of file qwt_color_map\&.cpp\&.
.SS "QRgb QwtAlphaColorMap::rgb (\fBconst\fP \fBQwtInterval\fP & interval, double value) const\fC [override]\fP, \fC [virtual]\fP"
.PP
Map a value of a given interval into a alpha value\&.
.PP
\fBParameters\fP
.RS 4
\fIinterval\fP Range for all values
.br
\fIvalue\fP Value to map into a RGB value
.RE
.PP
\fBReturns\fP
.RS 4
RGB value, with an alpha value
.RE
.PP
.PP
Implements \fBQwtColorMap\fP\&.
.PP
Definition at line 622 of file qwt_color_map\&.cpp\&.
.SS "void QwtAlphaColorMap::setAlphaInterval (int alpha1, int alpha2)"
Set the interval for the alpha coordinate
.PP
alpha1/alpha2 need to be in the range 0 to 255, where 255 means opaque and 0 means transparent\&.
.PP
\fBParameters\fP
.RS 4
\fIalpha1\fP First alpha coordinate
.br
\fIalpha2\fP Second alpha coordinate
.RE
.PP
\fBSee also\fP
.RS 4
\fBalpha1()\fP, \fBalpha2()\fP
.RE
.PP
.PP
Definition at line 587 of file qwt_color_map\&.cpp\&.
.SS "void QwtAlphaColorMap::setColor (\fBconst\fP QColor & color)"
Set the color
.PP
\fBParameters\fP
.RS 4
\fIcolor\fP Color
.RE
.PP
\fBSee also\fP
.RS 4
\fBcolor()\fP
.RE
.PP
.PP
Definition at line 558 of file qwt_color_map\&.cpp\&.
.SH "Author"
.PP
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.