update slider value
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16129e7243
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5463f5e729
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@ -56,7 +56,8 @@ void Handle::mousePressEvent(QMouseEvent *event)
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void Handle::mouseMoveEvent(QMouseEvent *event)
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{
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setRelativePosition(event->globalPos());
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_slider->update();
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//_slider->update();
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_slider->updateValue();
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}
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Slider::Slider(QWidget *parent)
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@ -111,7 +112,8 @@ void Slider::mousePressEvent(QMouseEvent *event)
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_handle->setOffset((event->pos() - QPoint(s.width()/2, s.height()/2)) - event->globalPos());
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_handle->setRelativePosition(event->globalPos());
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_drag = true;
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update();
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//update();
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updateValue();
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} else {
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_drag = false;
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}
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@ -122,7 +124,8 @@ void Slider::mouseMoveEvent(QMouseEvent *event)
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{
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if (_drag) {
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_handle->setRelativePosition(event->globalPos());
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update();
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//update();
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updateValue();
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}
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QAbstractSlider::mouseMoveEvent(event);
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}
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@ -132,3 +135,23 @@ void Slider::resizeEvent(QResizeEvent *event)
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_handle->refreshGeometry();
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QAbstractSlider::resizeEvent(event);
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}
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void Slider::updateValue()
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{
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const qreal tot = Qt::Horizontal == _orientation
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? geometry().width()-_handle->width()
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: geometry().height()-_handle->height();
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const qreal r = Qt::Horizontal == _orientation
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? _handle->geometry().left() / tot
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: _handle->geometry().top() / tot;
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// use QStyle::sliderValueFromPosition ??
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setValue((1-r)*minimum()+r*maximum());
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//setSliderPosition((1-r)*minimum()+r*maximum());
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//triggerAction(QAbstractSlider::SliderMove);
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update();
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}
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@ -56,7 +56,10 @@ protected:
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void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE;
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private:
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friend class Handle;
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inline bool isOnTrack(int p, int x) const { return (p >= x-2 && p <= x+2); }
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void updateValue();
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bool _drag;
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Handle *const _handle;
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@ -1,3 +1,4 @@
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#include <QDebug>
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#include <QVBoxLayout>
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#include <QLineEdit>
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#include "sliderexamples.h"
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@ -48,10 +49,9 @@ SliderExamples::SliderExamples(QWidget *parent)
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widget->setLayout(layout);
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Slider *slider = new Slider;
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QLineEdit *edit = new QLineEdit;
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layout->addWidget(slider);
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layout->addWidget(edit);
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layout->addWidget(_edit);
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layout->setStretch(0, 1);
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layout->setStretch(1, 1);
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@ -65,6 +65,7 @@ SliderExamples::SliderExamples(QWidget *parent)
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frame->setWidget(view);
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connect(slider, SIGNAL(valueChanged(int)), this, SLOT(updateValue(int)));
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// connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(updateValue(int)));
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mainLayout->addWidget(frame);
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}
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