45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
#include "customslider.h"
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#include "globalhelper.h"
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CustomSlider::CustomSlider(QWidget *parent)
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: QSlider(parent)
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{
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this->setMaximum(MAX_SLIDER_VALUE);
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}
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CustomSlider::~CustomSlider()
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{
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}
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void CustomSlider::mousePressEvent(QMouseEvent *ev)
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{
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bIsPressed = true;
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//注意应先调用父类的鼠标点击处理事件，这样可以不影响拖动的情况
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QSlider::mousePressEvent(ev);
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//获取鼠标的位置，这里并不能直接从ev中取值（因为如果是拖动的话，鼠标开始点击的位置没有意义了）
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double pos = ev->pos().x() / (double)width();
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setValue(pos * (maximum() - minimum()) + minimum());
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emit SigCustomSliderValueChanged(this->value());
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}
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void CustomSlider::mouseReleaseEvent(QMouseEvent *ev)
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{
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bIsPressed = false;
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QSlider::mouseReleaseEvent(ev);
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emit SigCustomSliderValueChanged(this->value());
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}
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void CustomSlider::mouseMoveEvent(QMouseEvent *ev)
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{
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if (!bIsPressed)
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return;
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QSlider::mouseMoveEvent(ev);
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//获取鼠标的位置，这里并不能直接从ev中取值（因为如果是拖动的话，鼠标开始点击的位置没有意义了）
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double pos = ev->pos().x() / (double)width();
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setValue(pos * (maximum() - minimum()) + minimum());
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emit SigCustomSliderValueChanged(this->value());
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}
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