彻底改版2.0
This commit is contained in:
feiyangqingyun
441
third/3rd_qwt/qwt_dial_needle.cpp
Normal file
441
third/3rd_qwt/qwt_dial_needle.cpp
Normal file
@@ -0,0 +1,441 @@
|
||||
/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
|
||||
* Qwt Widget Library
|
||||
* Copyright (C) 1997 Josef Wilgen
|
||||
* Copyright (C) 2002 Uwe Rathmann
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the Qwt License, Version 1.0
|
||||
*****************************************************************************/
|
||||
|
||||
#include "qwt_dial_needle.h"
|
||||
#include "qwt_global.h"
|
||||
#include "qwt_math.h"
|
||||
#include "qwt_painter.h"
|
||||
#include "qapplication.h"
|
||||
#include "qpainterpath.h"
|
||||
#include "qpainter.h"
|
||||
|
||||
#if QT_VERSION < 0x040601
|
||||
#define qFastSin(x) qSin(x)
|
||||
#define qFastCos(x) qCos(x)
|
||||
#endif
|
||||
|
||||
static void qwtDrawStyle1Needle( QPainter *painter,
|
||||
const QPalette &palette, QPalette::ColorGroup colorGroup,
|
||||
double length )
|
||||
{
|
||||
const double r[] = { 0.4, 0.3, 1, 0.8, 1, 0.3, 0.4 };
|
||||
const double a[] = { -45, -20, -15, 0, 15, 20, 45 };
|
||||
|
||||
QPainterPath path;
|
||||
for ( int i = 0; i < 7; i++ )
|
||||
{
|
||||
const double angle = a[i] / 180.0 * M_PI;
|
||||
const double radius = r[i] * length;
|
||||
|
||||
const double x = radius * qFastCos( angle );
|
||||
const double y = radius * qFastSin( angle );
|
||||
|
||||
path.lineTo( x, -y );
|
||||
}
|
||||
|
||||
painter->setPen( Qt::NoPen );
|
||||
painter->setBrush( palette.brush( colorGroup, QPalette::Light ) );
|
||||
painter->drawPath( path );
|
||||
}
|
||||
|
||||
static void qwtDrawStyle2Needle( QPainter *painter,
|
||||
const QPalette &palette, QPalette::ColorGroup colorGroup, double length )
|
||||
{
|
||||
const double ratioX = 0.7;
|
||||
const double ratioY = 0.3;
|
||||
|
||||
QPainterPath path1;
|
||||
path1.lineTo( ratioX * length, 0.0 );
|
||||
path1.lineTo( length, ratioY * length );
|
||||
|
||||
QPainterPath path2;
|
||||
path2.lineTo( ratioX * length, 0.0 );
|
||||
path2.lineTo( length, -ratioY * length );
|
||||
|
||||
painter->setPen( Qt::NoPen );
|
||||
|
||||
painter->setBrush( palette.brush( colorGroup, QPalette::Light ) );
|
||||
painter->drawPath( path1 );
|
||||
|
||||
painter->setBrush( palette.brush( colorGroup, QPalette::Dark ) );
|
||||
painter->drawPath( path2 );
|
||||
}
|
||||
|
||||
static void qwtDrawShadedPointer( QPainter *painter,
|
||||
const QColor &lightColor, const QColor &darkColor,
|
||||
double length, double width )
|
||||
{
|
||||
const double peak = qMax( length / 10.0, 5.0 );
|
||||
|
||||
const double knobWidth = width + 8;
|
||||
QRectF knobRect( 0, 0, knobWidth, knobWidth );
|
||||
knobRect.moveCenter( QPointF(0, 0) );
|
||||
|
||||
QPainterPath path1;
|
||||
path1.lineTo( 0.0, 0.5 * width );
|
||||
path1.lineTo( length - peak, 0.5 * width );
|
||||
path1.lineTo( length, 0.0 );
|
||||
path1.lineTo( 0.0, 0.0 );
|
||||
|
||||
QPainterPath arcPath1;
|
||||
arcPath1.arcTo( knobRect, 0.0, -90.0 );
|
||||
|
||||
path1 = path1.united( arcPath1 );
|
||||
|
||||
QPainterPath path2;
|
||||
path2.lineTo( 0.0, -0.5 * width );
|
||||
path2.lineTo( length - peak, -0.5 * width );
|
||||
path2.lineTo( length, 0.0 );
|
||||
path2.lineTo( 0.0, 0.0 );
|
||||
|
||||
QPainterPath arcPath2;
|
||||
arcPath2.arcTo( knobRect, 0.0, 90.0 );
|
||||
|
||||
path2 = path2.united( arcPath2 );
|
||||
|
||||
painter->setPen( Qt::NoPen );
|
||||
|
||||
painter->setBrush( lightColor );
|
||||
painter->drawPath( path1 );
|
||||
|
||||
painter->setBrush( darkColor );
|
||||
painter->drawPath( path2 );
|
||||
}
|
||||
|
||||
static void qwtDrawArrowNeedle( QPainter *painter,
|
||||
const QPalette &palette, QPalette::ColorGroup colorGroup,
|
||||
double length, double width )
|
||||
{
|
||||
if ( width <= 0 )
|
||||
width = qMax( length * 0.06, 9.0 );
|
||||
|
||||
const double peak = qMax( 2.0, 0.4 * width );
|
||||
|
||||
QPainterPath path;
|
||||
path.moveTo( 0.0, 0.5 * width );
|
||||
path.lineTo( length - peak, 0.3 * width );
|
||||
path.lineTo( length, 0.0 );
|
||||
path.lineTo( length - peak, -0.3 * width );
|
||||
path.lineTo( 0.0, -0.5 * width );
|
||||
|
||||
QRectF br = path.boundingRect();
|
||||
|
||||
QPalette pal( palette.color( QPalette::Mid ) );
|
||||
QColor c1 = pal.color( QPalette::Light );
|
||||
QColor c2 = pal.color( QPalette::Dark );
|
||||
|
||||
QLinearGradient gradient( br.topLeft(), br.bottomLeft() );
|
||||
gradient.setColorAt( 0.0, c1 );
|
||||
gradient.setColorAt( 0.5, c1 );
|
||||
gradient.setColorAt( 0.5001, c2 );
|
||||
gradient.setColorAt( 1.0, c2 );
|
||||
|
||||
QPen pen( gradient, 1 );
|
||||
pen.setJoinStyle( Qt::MiterJoin );
|
||||
|
||||
painter->setPen( pen );
|
||||
painter->setBrush( palette.brush( colorGroup, QPalette::Mid ) );
|
||||
|
||||
painter->drawPath( path );
|
||||
}
|
||||
|
||||
static void qwtDrawTriangleNeedle( QPainter *painter,
|
||||
const QPalette &palette, QPalette::ColorGroup colorGroup,
|
||||
double length )
|
||||
{
|
||||
const double width = qRound( length / 3.0 );
|
||||
|
||||
QPainterPath path[4];
|
||||
|
||||
path[0].lineTo( length, 0.0 );
|
||||
path[0].lineTo( 0.0, width / 2 );
|
||||
|
||||
path[1].lineTo( length, 0.0 );
|
||||
path[1].lineTo( 0.0, -width / 2 );
|
||||
|
||||
path[2].lineTo( -length, 0.0 );
|
||||
path[2].lineTo( 0.0, width / 2 );
|
||||
|
||||
path[3].lineTo( -length, 0.0 );
|
||||
path[3].lineTo( 0.0, -width / 2 );
|
||||
|
||||
|
||||
const int colorOffset = 10;
|
||||
const QColor darkColor = palette.color( colorGroup, QPalette::Dark );
|
||||
const QColor lightColor = palette.color( colorGroup, QPalette::Light );
|
||||
|
||||
QColor color[4];
|
||||
color[0] = darkColor.light( 100 + colorOffset );
|
||||
color[1] = darkColor.dark( 100 + colorOffset );
|
||||
color[2] = lightColor.light( 100 + colorOffset );
|
||||
color[3] = lightColor.dark( 100 + colorOffset );
|
||||
|
||||
painter->setPen( Qt::NoPen );
|
||||
|
||||
for ( int i = 0; i < 4; i++ )
|
||||
{
|
||||
painter->setBrush( color[i] );
|
||||
painter->drawPath( path[i] );
|
||||
}
|
||||
}
|
||||
|
||||
//! Constructor
|
||||
QwtDialNeedle::QwtDialNeedle():
|
||||
d_palette( QApplication::palette() )
|
||||
{
|
||||
}
|
||||
|
||||
//! Destructor
|
||||
QwtDialNeedle::~QwtDialNeedle()
|
||||
{
|
||||
}
|
||||
|
||||
/*!
|
||||
Sets the palette for the needle.
|
||||
|
||||
\param palette New Palette
|
||||
*/
|
||||
void QwtDialNeedle::setPalette( const QPalette &palette )
|
||||
{
|
||||
d_palette = palette;
|
||||
}
|
||||
|
||||
/*!
|
||||
\return the palette of the needle.
|
||||
*/
|
||||
const QPalette &QwtDialNeedle::palette() const
|
||||
{
|
||||
return d_palette;
|
||||
}
|
||||
|
||||
/*!
|
||||
Draw the needle
|
||||
|
||||
\param painter Painter
|
||||
\param center Center of the dial, start position for the needle
|
||||
\param length Length of the needle
|
||||
\param direction Direction of the needle, in degrees counter clockwise
|
||||
\param colorGroup Color group, used for painting
|
||||
*/
|
||||
void QwtDialNeedle::draw( QPainter *painter,
|
||||
const QPointF ¢er, double length, double direction,
|
||||
QPalette::ColorGroup colorGroup ) const
|
||||
{
|
||||
painter->save();
|
||||
|
||||
painter->translate( center );
|
||||
painter->rotate( -direction );
|
||||
|
||||
drawNeedle( painter, length, colorGroup );
|
||||
|
||||
painter->restore();
|
||||
}
|
||||
|
||||
//! Draw the knob
|
||||
void QwtDialNeedle::drawKnob( QPainter *painter,
|
||||
double width, const QBrush &brush, bool sunken ) const
|
||||
{
|
||||
QPalette palette( brush.color() );
|
||||
|
||||
QColor c1 = palette.color( QPalette::Light );
|
||||
QColor c2 = palette.color( QPalette::Dark );
|
||||
|
||||
if ( sunken )
|
||||
qSwap( c1, c2 );
|
||||
|
||||
QRectF rect( 0.0, 0.0, width, width );
|
||||
rect.moveCenter( painter->combinedTransform().map( QPointF() ) );
|
||||
|
||||
QLinearGradient gradient( rect.topLeft(), rect.bottomRight() );
|
||||
gradient.setColorAt( 0.0, c1 );
|
||||
gradient.setColorAt( 0.3, c1 );
|
||||
gradient.setColorAt( 0.7, c2 );
|
||||
gradient.setColorAt( 1.0, c2 );
|
||||
|
||||
painter->save();
|
||||
|
||||
painter->resetTransform();
|
||||
|
||||
painter->setPen( QPen( gradient, 1 ) );
|
||||
painter->setBrush( brush );
|
||||
painter->drawEllipse( rect );
|
||||
|
||||
painter->restore();
|
||||
}
|
||||
|
||||
/*!
|
||||
Constructor
|
||||
|
||||
\param style Style
|
||||
\param hasKnob With/Without knob
|
||||
\param mid Middle color
|
||||
\param base Base color
|
||||
*/
|
||||
QwtDialSimpleNeedle::QwtDialSimpleNeedle( Style style, bool hasKnob,
|
||||
const QColor &mid, const QColor &base ):
|
||||
d_style( style ),
|
||||
d_hasKnob( hasKnob ),
|
||||
d_width( -1 )
|
||||
{
|
||||
QPalette palette;
|
||||
palette.setColor( QPalette::Mid, mid );
|
||||
palette.setColor( QPalette::Base, base );
|
||||
|
||||
setPalette( palette );
|
||||
}
|
||||
|
||||
/*!
|
||||
Set the width of the needle
|
||||
\param width Width
|
||||
\sa width()
|
||||
*/
|
||||
void QwtDialSimpleNeedle::setWidth( double width )
|
||||
{
|
||||
d_width = width;
|
||||
}
|
||||
|
||||
/*!
|
||||
\return the width of the needle
|
||||
\sa setWidth()
|
||||
*/
|
||||
double QwtDialSimpleNeedle::width() const
|
||||
{
|
||||
return d_width;
|
||||
}
|
||||
|
||||
/*!
|
||||
Draw the needle
|
||||
|
||||
\param painter Painter
|
||||
\param length Length of the needle
|
||||
\param colorGroup Color group, used for painting
|
||||
*/
|
||||
void QwtDialSimpleNeedle::drawNeedle( QPainter *painter,
|
||||
double length, QPalette::ColorGroup colorGroup ) const
|
||||
{
|
||||
double knobWidth = 0.0;
|
||||
double width = d_width;
|
||||
|
||||
if ( d_style == Arrow )
|
||||
{
|
||||
if ( width <= 0.0 )
|
||||
width = qMax(length * 0.06, 6.0);
|
||||
|
||||
qwtDrawArrowNeedle( painter,
|
||||
palette(), colorGroup, length, width );
|
||||
|
||||
knobWidth = qMin( width * 2.0, 0.2 * length );
|
||||
}
|
||||
else
|
||||
{
|
||||
if ( width <= 0.0 )
|
||||
width = 5.0;
|
||||
|
||||
QPen pen ( palette().brush( colorGroup, QPalette::Mid ), width );
|
||||
pen.setCapStyle( Qt::FlatCap );
|
||||
|
||||
painter->setPen( pen );
|
||||
painter->drawLine( QPointF( 0.0, 0.0 ), QPointF( length, 0.0 ) );
|
||||
|
||||
knobWidth = qMax( width * 3.0, 5.0 );
|
||||
}
|
||||
|
||||
if ( d_hasKnob && knobWidth > 0.0 )
|
||||
{
|
||||
drawKnob( painter, knobWidth,
|
||||
palette().brush( colorGroup, QPalette::Base ), false );
|
||||
}
|
||||
}
|
||||
|
||||
//! Constructor
|
||||
QwtCompassMagnetNeedle::QwtCompassMagnetNeedle( Style style,
|
||||
const QColor &light, const QColor &dark ):
|
||||
d_style( style )
|
||||
{
|
||||
QPalette palette;
|
||||
palette.setColor( QPalette::Light, light );
|
||||
palette.setColor( QPalette::Dark, dark );
|
||||
palette.setColor( QPalette::Base, Qt::gray );
|
||||
|
||||
setPalette( palette );
|
||||
}
|
||||
|
||||
/*!
|
||||
Draw the needle
|
||||
|
||||
\param painter Painter
|
||||
\param length Length of the needle
|
||||
\param colorGroup Color group, used for painting
|
||||
*/
|
||||
void QwtCompassMagnetNeedle::drawNeedle( QPainter *painter,
|
||||
double length, QPalette::ColorGroup colorGroup ) const
|
||||
{
|
||||
if ( d_style == ThinStyle )
|
||||
{
|
||||
const double width = qMax( length / 6.0, 3.0 );
|
||||
|
||||
const int colorOffset = 10;
|
||||
|
||||
const QColor light = palette().color( colorGroup, QPalette::Light );
|
||||
const QColor dark = palette().color( colorGroup, QPalette::Dark );
|
||||
|
||||
qwtDrawShadedPointer( painter,
|
||||
dark.light( 100 + colorOffset ),
|
||||
dark.dark( 100 + colorOffset ),
|
||||
length, width );
|
||||
|
||||
painter->rotate( 180.0 );
|
||||
|
||||
qwtDrawShadedPointer( painter,
|
||||
light.light( 100 + colorOffset ),
|
||||
light.dark( 100 + colorOffset ),
|
||||
length, width );
|
||||
|
||||
const QBrush baseBrush = palette().brush( colorGroup, QPalette::Base );
|
||||
drawKnob( painter, width, baseBrush, true );
|
||||
}
|
||||
else
|
||||
{
|
||||
qwtDrawTriangleNeedle( painter, palette(), colorGroup, length );
|
||||
}
|
||||
}
|
||||
|
||||
/*!
|
||||
Constructor
|
||||
|
||||
\param style Arrow style
|
||||
\param light Light color
|
||||
\param dark Dark color
|
||||
*/
|
||||
QwtCompassWindArrow::QwtCompassWindArrow( Style style,
|
||||
const QColor &light, const QColor &dark ):
|
||||
d_style( style )
|
||||
{
|
||||
QPalette palette;
|
||||
palette.setColor( QPalette::Light, light );
|
||||
palette.setColor( QPalette::Dark, dark );
|
||||
|
||||
setPalette( palette );
|
||||
}
|
||||
|
||||
/*!
|
||||
Draw the needle
|
||||
|
||||
\param painter Painter
|
||||
\param length Length of the needle
|
||||
\param colorGroup Color group, used for painting
|
||||
*/
|
||||
void QwtCompassWindArrow::drawNeedle( QPainter *painter,
|
||||
double length, QPalette::ColorGroup colorGroup ) const
|
||||
{
|
||||
if ( d_style == Style1 )
|
||||
qwtDrawStyle1Needle( painter, palette(), colorGroup, length );
|
||||
else
|
||||
qwtDrawStyle2Needle( painter, palette(), colorGroup, length );
|
||||
}
|
||||
Reference in New Issue
Block a user