新增qwt源码版本

2019-11-07 10:56:33 +08:00
parent d9b38d7ecd
commit 4746999d0e
377 changed files with 81225 additions and 1 deletions
--- a/qwtdemo/examples/controls/knobbox.cpp
+++ b/qwtdemo/examples/controls/knobbox.cpp
@@ -0,0 +1,119 @@
+#include <qlabel.h>
+#include <qlayout.h>
+#include <qwt_knob.h>
+#include <qwt_scale_engine.h>
+#include <qwt_transform.h>
+#include "knobbox.h"
+
+KnobBox::KnobBox( QWidget *parent, int knobType ):
+    QWidget( parent )
+{
+    d_knob = createKnob( knobType );
+    d_knob->setKnobWidth( 100 );
+
+    d_label = new QLabel( this );
+    d_label->setAlignment( Qt::AlignCenter );
+
+    QVBoxLayout *layout = new QVBoxLayout( this );;
+    layout->setSpacing( 0 );
+    layout->addWidget( d_knob, 10 );
+    layout->addWidget( d_label );
+    layout->addStretch( 10 );
+
+    connect( d_knob, SIGNAL( valueChanged( double ) ), 
+        this, SLOT( setNum( double ) ) );
+
+    setNum( d_knob->value() );
+}
+
+QwtKnob *KnobBox::createKnob( int knobType ) const
+{
+    QwtKnob *knob = new QwtKnob();
+    knob->setTracking( true );
+
+    switch( knobType )
+    {
+        case 0:
+        {
+            knob->setKnobStyle( QwtKnob::Sunken );
+            knob->setMarkerStyle( QwtKnob::Nub );
+            knob->setWrapping( true );
+            knob->setNumTurns( 4 );
+            knob->setScaleStepSize( 10.0 );
+            knob->setScale( 0, 400 );
+            knob->setTotalSteps( 400 );
+            break;
+        }
+        case 1:
+        {
+            knob->setKnobStyle( QwtKnob::Sunken );
+            knob->setMarkerStyle( QwtKnob::Dot );
+            break;
+        }
+        case 2:
+        {
+            knob->setKnobStyle( QwtKnob::Sunken );
+            knob->setMarkerStyle( QwtKnob::Tick );
+            
+            QwtLinearScaleEngine *scaleEngine = new QwtLinearScaleEngine( 2 );
+            scaleEngine->setTransformation( new QwtPowerTransform( 2 ) );
+            knob->setScaleEngine( scaleEngine );
+
+            QList< double > ticks[ QwtScaleDiv::NTickTypes ];
+            ticks[ QwtScaleDiv::MajorTick ] << 0 << 4 
+                << 16 << 32 << 64 << 96 << 128;
+            ticks[ QwtScaleDiv::MediumTick ] << 24 << 48 << 80 << 112;
+            ticks[ QwtScaleDiv::MinorTick ] 
+                << 0.5 << 1 << 2 
+                << 7 << 10 << 13
+                << 20 << 28 
+                << 40 << 56 
+                << 72 << 88 
+                << 104 << 120; 
+ 
+            knob->setScale( QwtScaleDiv( 0, 128, ticks ) );
+
+            knob->setTotalSteps( 100 );
+            knob->setStepAlignment( false );
+            knob->setSingleSteps( 1 );
+            knob->setPageSteps( 5 );
+
+            break;
+        }
+        case 3:
+        {
+            knob->setKnobStyle( QwtKnob::Flat );
+            knob->setMarkerStyle( QwtKnob::Notch );
+            knob->setScaleEngine( new QwtLogScaleEngine() );
+            knob->setScaleStepSize( 1.0 );
+            knob->setScale( 0.1, 1000.0 );
+            knob->setScaleMaxMinor( 10 );
+            break;
+        }
+        case 4:
+        {
+            knob->setKnobStyle( QwtKnob::Raised );
+            knob->setMarkerStyle( QwtKnob::Dot );
+            knob->setWrapping( true );
+            break;
+        }
+        case 5:
+        {
+            knob->setKnobStyle( QwtKnob::Styled );
+            knob->setMarkerStyle( QwtKnob::Triangle );
+            knob->setTotalAngle( 180.0 );
+            knob->setScale( 100, -100 );
+            break;
+        }
+    }
+
+    return knob;
+}
+
+void KnobBox::setNum( double v )
+{
+    QString text;
+    text.setNum( v, 'f', 2 );
+
+    d_label->setText( text );
+}