PyQt中实现自定义工具提示ToolTip的方法详解
目录
- 前言
- 实现过程
- 测试
- 后记
前言
Qt 自带的工具提示样式不太好看,就算加了样式表也时不时会失效,同时工具提示没有阴影,看起来就更难受了。所以本篇博客将会介绍自定义工具提示的方法,效果如下图所示:
实现过程
工具提示其实就是一个带了标签的窗口,为了给工具提示加上阴影,只要给窗口设置 QGraphicsShadowEffect
即可。同时 QToolTip
弹出之后不会一直卡在界面上,一段时间后就会消失,所以我们应该给自定义的工具提示加上一个 QTimer
,时间溢出之后就隐藏工具提示。
# coding:utf-8 from PyQt5.QtCore import QFile, QPropertyAnimation, QTimer, Qt from PyQt5.QtGui import QColor from PyQt5.QtWidgets import (QApplication, QFrame, QGraphicsDropShadowEffect, QHBoxLayout, QLabel) class ToolTip(QFrame): def __init__(self, text='', parent=None): super().__init__(parent=parent) self.__text = text self.__duration = 1000 self.timer = QTimer(self) self.hBox = QHBoxLayout(self) self.label = QLabel(text, self) self.ani = QPropertyAnimation(self, b'windowOpacity', self) # set layout self.hBox.addWidget(self.label) self.hBox.setContentsMargins(10, 7, 10, 7) # add shadow self.shadowEffect = QGraphicsDropShadowEffect(self) self.shadowEffect.setBlurRadius(32) self.shadowEffect.setColor(QColor(0, 0, 0, 60)) self.shadowEffect.setOffset(0, 5) self.setGraphicsEffect(self.shadowEffect) self.timer.setSingleShot(True) self.timer.timeout.connect(self.hide) # set style self.setAttribute(Qt.WA_StyledBackground) self.setDarkTheme(False) self.__setQss() def text(self): return self.__text def setText(self, text: str): """ set text on tooltip """ self.__text = text self.label.setText(text) self.label.adjustSize() self.adjustSize() def duration(self): return self.__duration def setDuration(self, duration: int): """ set tooltip duration in milliseconds """ self.__duration = abs(duration) def __setQss(self): """ set style sheet """ f = QFile("resource/tooltip.qss") f.open(QFile.ReadOnly) self.setStyleSheet(str(f.readAll(), encoding='utf-8')) f.close() self.label.adjustSize() self.adjustSize() def setDarkTheme(self, dark=False): """ set dark theme """ dark = 'true' if dark else 'false' self.setProperty('dark', dark) self.label.setProperty('dark', dark) self.setStyle(QApplication.style()) def showEvent(self, e): self.timer.stop() self.timer.start(self.__duration) super().showEvent(e) def hideEvent(self, e): self.timer.stop() super().hideEvent(e)
工具提示继承自 QFrame
的原因是我们需要设置边框样式,样式表如下所示,支持亮暗两种主题:
ToolTip[dark="false"] { border: 1px solid rgba(0, 0, 0, 0.06); border-radius: 5px; background-color: rgb(243, 243, 243); } ToolTip[dark="true"] { border: 1px solid rgb(28, 28, 28); border-radius: 5px; background-color: rgb(43, 43, 43); } QLabel { background-color: transparent; font: 15px 'Segoe UI', 'Microsoft YaHei'; } QLabel[dark="false"] { color: black; } QLabel[dark="true"] { color: white; }
测试
下述代码的运行效果就是动图中所示的样子,只要给想要设置工具提示的部件安装上事件过滤器,就能将 QToolTip
替换成自定义的工具提示:
# coding:utf-8 import sys from PyQt5.QtCore import QEvent, QPoint from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QHBoxLayout from tool_tip import ToolTip class Demo(QWidget): def __init__(self): super().__init__() self.hBox = QHBoxLayout(self) self.button1 = QPushButton('キラキラ', self) self.button2 = QPushButton('食べた愛', self) self._toolTip = ToolTip(parent=self) # self._tooltip.setDarkTheme(True) self.button1.setToolTip('aiko - キラキラ ') self.button2.setToolTip('aiko - 食べた愛
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