init commit

seekableslider.cpp

@@ -0,0 +1,29 @@
+#include "seekableslider.h"
+
+SeekableSlider::SeekableSlider(QWidget *parent) :
+    QSlider(parent)
+{
+    //关闭分段移动
+    setSingleStep(0);
+    setPageStep(0);
+}
+
+//点击Slider即可调节Value
+//只写了横向模式的Slider……
+void SeekableSlider::mousePressEvent(QMouseEvent *event)
+{
+    if (event->buttons() & Qt::LeftButton) {
+        QSlider::mousePressEvent(event);
+        double pos = event->pos().x() / (double)width();
+        setValue(pos * (maximum() - minimum()) + minimum());
+    }
+}
+
+void SeekableSlider::mouseMoveEvent(QMouseEvent *event)
+{
+    if (event->buttons() & Qt::LeftButton) {
+        QSlider::mousePressEvent(event);
+        double pos = event->pos().x() / (double)width();
+        setValue(pos * (maximum() - minimum()) + minimum());
+    }
+}