#!/usr/bin/env python # -*- coding: utf-8 -*- """ Created on 2017年12月23日 @author: Irony @site: https://pyqt.site , https://github.com/PyQt5 @email: 892768447@qq.com @file: ToolTip2 @description: """ import sys try: from PyQt5.QtChart import QChartView, QChart, QLineSeries from PyQt5.QtCore import Qt, QRectF, QPoint, QPointF from PyQt5.QtGui import QPainter, QCursor from PyQt5.QtWidgets import QApplication, QGraphicsProxyWidget, QLabel, \ QWidget, QHBoxLayout, QVBoxLayout, QToolTip, QGraphicsLineItem except ImportError: from PySide2.QtCore import Qt, QRectF, QPoint, QPointF from PySide2.QtGui import QPainter, QCursor from PySide2.QtWidgets import QApplication, QGraphicsProxyWidget, QLabel, \ QWidget, QHBoxLayout, QVBoxLayout, QToolTip, QGraphicsLineItem from PySide2.QtCharts import QtCharts QChartView = QtCharts.QChartView QChart = QtCharts.QChart QLineSeries = QtCharts.QLineSeries """ class CircleWidget(QGraphicsProxyWidget): def __init__(self, color, *args, **kwargs): super(CircleWidget, self).__init__(*args, **kwargs) label = QLabel() label.setMinimumSize(12, 12) label.setMaximumSize(12, 12) label.setStyleSheet( "border:1px solid green;border-radius:6px;background: %s;" % color) self.setWidget(label) class TextWidget(QGraphicsProxyWidget): def __init__(self, text, *args, **kwargs): super(TextWidget, self).__init__(*args, **kwargs) self.setWidget(QLabel(text, styleSheet="color:white;")) class GraphicsWidget(QGraphicsWidget): def __init__(self, *args, **kwargs): super(GraphicsWidget, self).__init__(*args, **kwargs) # self.setFlags(self.ItemClipsChildrenToShape) self.setZValue(999) layout = QGraphicsGridLayout(self) for row in range(6): layout.addItem(CircleWidget("red"), row, 0) layout.addItem(TextWidget("red"), row, 1) self.hide() def show(self, pos): self.setGeometry(pos.x(), pos.y(), self.size().width(), self.size().height()) super(GraphicsWidget, self).show() """ class ToolTipItem(QWidget): def __init__(self, color, text, parent=None): super(ToolTipItem, self).__init__(parent) layout = QHBoxLayout(self) layout.setContentsMargins(0, 0, 0, 0) clabel = QLabel(self) clabel.setMinimumSize(12, 12) clabel.setMaximumSize(12, 12) clabel.setStyleSheet("border-radius:6px;background: rgba(%s,%s,%s,%s);" % ( color.red(), color.green(), color.blue(), color.alpha())) layout.addWidget(clabel) self.textLabel = QLabel(text, self, styleSheet="color:white;") layout.addWidget(self.textLabel) def setText(self, text): self.textLabel.setText(text) class ToolTipWidget(QWidget): Cache = {} def __init__(self, *args, **kwargs): super(ToolTipWidget, self).__init__(*args, **kwargs) self.setAttribute(Qt.WA_StyledBackground, True) self.setStyleSheet( "ToolTipWidget{background: rgba(50,50,50,70);}") layout = QVBoxLayout(self) self.titleLabel = QLabel(self, styleSheet="color:white;") layout.addWidget(self.titleLabel) def updateUi(self, title, points): self.titleLabel.setText(title) for serie, point in points: if serie not in self.Cache: item = ToolTipItem( serie.color(), (serie.name() or "-") + ":" + str(point.y()), self) self.layout().addWidget(item) self.Cache[serie] = item else: self.Cache[serie].setText( (serie.name() or "-") + ":" + str(point.y())) class GraphicsProxyWidget(QGraphicsProxyWidget): def __init__(self, *args, **kwargs): super(GraphicsProxyWidget, self).__init__(*args, **kwargs) self.setZValue(999) self.tipWidget = ToolTipWidget() self.setWidget(self.tipWidget) self.hide() def show(self, title, points, pos): self.setGeometry(QRectF(pos, self.size())) self.tipWidget.updateUi(title, points) super(GraphicsProxyWidget, self).show() class ChartView(QChartView): def __init__(self, *args, **kwargs): super(ChartView, self).__init__(*args, **kwargs) self.resize(800, 600) self.setRenderHint(QPainter.Antialiasing) # 抗锯齿 self.initChart() self.toolTipWidget = GraphicsProxyWidget(self._chart) # line self.lineItem = QGraphicsLineItem(self._chart) self.lineItem.setZValue(998) self.lineItem.hide() # 一些固定计算，减少mouseMoveEvent中的计算量 # 获取x和y轴的最小最大值 axisX, axisY = self._chart.axisX(), self._chart.axisY() self.min_x, self.max_x = axisX.min(), axisX.max() self.min_y, self.max_y = axisY.min(), axisY.max() # 坐标系中左上角顶点 self.point_top = self._chart.mapToPosition( QPointF(self.min_x, self.max_y)) # 坐标原点坐标 self.point_bottom = self._chart.mapToPosition( QPointF(self.min_x, self.min_y)) self.step_x = (self.max_x - self.min_x) / (axisX.tickCount() - 1) # self.step_y = (self.max_y - self.min_y) / (axisY.tickCount() - 1) def mouseMoveEvent(self, event): super(ChartView, self).mouseMoveEvent(event) # 把鼠标位置所在点转换为对应的xy值 x = self._chart.mapToValue(event.pos()).x() y = self._chart.mapToValue(event.pos()).y() index = round((x - self.min_x) / self.step_x) # print(x, pos_x, index, index * self.step_x + self.min_x) # 得到在坐标系中的所有series的类型和点 points = [(serie, serie.at(index)) for serie in self._chart.series() if self.min_x <= x <= self.max_x and self.min_y <= y <= self.max_y] if points: # 跟随鼠标的黑线条 self.lineItem.setLine(event.pos().x(), self.point_top.y(), event.pos().x(), self.point_bottom.y()) self.lineItem.show() self.toolTipWidget.show("", points, event.pos() + QPoint(20, 20)) else: self.toolTipWidget.hide() self.lineItem.hide() def onSeriesHoverd(self, point, state): if state: try: name = self.sender().name() except: name = "" QToolTip.showText(QCursor.pos(), "%s\nx: %s\ny: %s" % (name, point.x(), point.y())) def initChart(self): self._chart = QChart(title="Line Chart") self._chart.setAcceptHoverEvents(True) dataTable = [ [120, 132, 101, 134, 90, 230, 210], [220, 182, 191, 234, 290, 330, 310], [150, 232, 201, 154, 190, 330, 410], [320, 332, 301, 334, 390, 330, 320], [820, 932, 901, 934, 1290, 1330, 1320] ] for i, data_list in enumerate(dataTable): series = QLineSeries(self._chart) for j, v in enumerate(data_list): series.append(j, v) series.setName("Series " + str(i)) series.setPointsVisible(True) # 显示原点 series.hovered.connect(self.onSeriesHoverd) self._chart.addSeries(series) self._chart.createDefaultAxes() # 创建默认的轴 self._chart.axisX().setTickCount(7) # x轴设置7个刻度 self._chart.axisY().setTickCount(7) # y轴设置7个刻度 self._chart.axisY().setRange(0, 1500) # 设置y轴范围 self.setChart(self._chart) if __name__ == "__main__": app = QApplication(sys.argv) app.setStyleSheet("""QToolTip { border: none; padding: 5px; color: white; background: rgb(50,50,50); opacity: 100; }""") view = ChartView() view.show() sys.exit(app.exec_())