PyQt/QSlider/ClickJumpSlider.py
2021-07-13 14:52:26 +08:00

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2018年11月5日
@author: Irony
@site: https://pyqt.site , https://github.com/PyQt5
@email: 892768447@qq.com
@file: ClickJumpSlider
@description:
"""
try:
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QSlider, QStyleOptionSlider, QStyle, QWidget, QFormLayout, \
QLabel
except ImportError:
from PySide2.QtCore import Qt
from PySide2.QtWidgets import QApplication, QSlider, QStyleOptionSlider, QStyle, QWidget, QFormLayout, \
QLabel
class ClickJumpSlider(QSlider):
def mousePressEvent(self, event):
# 获取上面的拉动块位置
option = QStyleOptionSlider()
self.initStyleOption(option)
rect = self.style().subControlRect(
QStyle.CC_Slider, option, QStyle.SC_SliderHandle, self)
if rect.contains(event.pos()):
# 如果鼠标点击的位置在滑块上则交给Qt自行处理
super(ClickJumpSlider, self).mousePressEvent(event)
return
if self.orientation() == Qt.Horizontal:
# 横向要考虑invertedAppearance是否反向显示的问题
self.setValue(self.style().sliderValueFromPosition(
self.minimum(), self.maximum(),
event.x() if not self.invertedAppearance() else (self.width(
) - event.x()), self.width()))
else:
# 纵向
self.setValue(self.style().sliderValueFromPosition(
self.minimum(), self.maximum(),
(self.height() - event.y()) if not self.invertedAppearance(
) else event.y(), self.height()))
class DemoWindow(QWidget):
def __init__(self, *args, **kwargs):
super(DemoWindow, self).__init__(*args, **kwargs)
self.resize(600, 600)
layout = QFormLayout(self)
self.label1 = QLabel('0', self)
self.slider1 = ClickJumpSlider(Qt.Horizontal)
self.slider1.valueChanged.connect(lambda v: self.label1.setText(str(v)))
layout.addRow(self.label1, self.slider1)
# 横向-反向显示
self.label2 = QLabel('0', self)
self.slider2 = ClickJumpSlider(Qt.Horizontal, invertedAppearance=True)
self.slider2.valueChanged.connect(lambda v: self.label2.setText(str(v)))
layout.addRow(self.label2, self.slider2)
self.label3 = QLabel('0', self)
self.slider3 = ClickJumpSlider(Qt.Vertical, minimumHeight=200)
self.slider3.valueChanged.connect(lambda v: self.label3.setText(str(v)))
layout.addRow(self.label3, self.slider3)
# 纵向反向显示
self.label4 = QLabel('0', self)
self.slider4 = ClickJumpSlider(Qt.Vertical, invertedAppearance=True, minimumHeight=200)
self.slider4.valueChanged.connect(lambda v: self.label4.setText(str(v)))
layout.addRow(self.label4, self.slider4)
if __name__ == '__main__':
import sys
import cgitb
cgitb.enable(format='text')
app = QApplication(sys.argv)
w = DemoWindow()
w.show()
sys.exit(app.exec_())