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