PyQt/滑动条/滑动条点击定位.py

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2018-11-05 22:55:57 +08:00
#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2018年11月5日
@author: Irony
@site: https://pyqt5.com https://github.com/892768447
@email: 892768447@qq.com
@file: Widgets.JumpSlider
@description:
"""
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QSlider, QStyleOptionSlider, QStyle, QWidget,\
QFormLayout, QLabel
__Author__ = """By: Irony
QQ: 892768447
Email: 892768447@qq.com"""
__Copyright__ = "Copyright (c) 2018 Irony"
__Version__ = "Version 1.0"
class JumpSlider(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(JumpSlider, 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 TestWindow(QWidget):
def __init__(self, *args, **kwargs):
super(TestWindow, self).__init__(*args, **kwargs)
layout = QFormLayout(self)
self.label1 = QLabel('0', self)
layout.addRow(self.label1, JumpSlider(
Qt.Horizontal, valueChanged=lambda v: self.label1.setText(str(v))))
# 横向-反向显示
self.label2 = QLabel('0', self)
layout.addRow(self.label2, JumpSlider(
Qt.Horizontal, invertedAppearance=True,
valueChanged=lambda v: self.label2.setText(str(v))))
self.label3 = QLabel('0', self)
layout.addRow(self.label3, JumpSlider(
Qt.Vertical, minimumHeight=200, valueChanged=lambda v: self.label3.setText(str(v))))
# 纵向反向显示
self.label4 = QLabel('0', self)
layout.addRow(self.label4, JumpSlider(
Qt.Vertical, invertedAppearance=True,
minimumHeight=200, valueChanged=lambda v: self.label4.setText(str(v))))
if __name__ == '__main__':
import sys
import cgitb
sys.excepthook = cgitb.enable(1, None, 5, '')
from PyQt5.QtWidgets import QApplication
app = QApplication(sys.argv)
w = TestWindow()
w.show()
sys.exit(app.exec_())