BarsVisualization.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Created on 2019/10/4
@author: Irony
@site: https://pyqt.site , https://github.com/PyQt5
@email: 892768447@qq.com
@file: BarsVisualization
@description: 柱状图
"""

#############################################################################
##
## Copyright (C) 2014 Riverbank Computing Limited.
## Copyright (C) 2014 Digia Plc
## All rights reserved.
## For any questions to Digia, please use contact form at http://qt.digia.com
##
## This file is part of the QtDataVisualization module.
##
## Licensees holding valid Qt Enterprise licenses may use this file in
## accordance with the Qt Enterprise License Agreement provided with the
## Software or, alternatively, in accordance with the terms contained in
## a written agreement between you and Digia.
##
## If you have questions regarding the use of this file, please use
## contact form at http://qt.digia.com
##
#############################################################################


from PyQt5.QtCore import pyqtSignal, QObject, QSize, Qt, QLocale
from PyQt5.QtDataVisualization import (Q3DBars, Q3DCamera, Q3DTheme,
                                       QAbstract3DGraph, QAbstract3DSeries, QBar3DSeries, QBarDataItem,
                                       QCategory3DAxis, QValue3DAxis)
from PyQt5.QtGui import QFont
from PyQt5.QtWidgets import (QApplication, QCheckBox, QComboBox, QFontComboBox,
                             QHBoxLayout, QLabel, QPushButton, QSizePolicy, QSlider, QVBoxLayout,
                             QWidget)

country = QLocale.system().country()
if country in (QLocale.China, QLocale.HongKong, QLocale.Taiwan):
    Tr = {
        'Average temperature': '平均温度',
        'Average temperatures in Oulu and Helsinki, Finland (2006-2013)': '芬兰奥卢和赫尔辛基的平均气温（2006-2013）',
        'Change label style': '更改label样式',
        'Smooth bars': '平滑bars',
        'Change camera preset': '更改相机预设',
        'Show background': '显示背景',
        'Show grid': '显示网格',
        'Show second series': '显示第二个数据列',
        'Low': '低质量',
        'Medium': '中等质量',
        'High': '高质量',
        'Low Soft': '柔化低质量',
        'Medium Soft': '柔化中等质量',
        'High Soft': '柔化高质量',
        'Rotate horizontally': '水平旋转',
        'Rotate vertically': '垂直旋转',
        'Show year': '显示年份',
        'Change bar style': '更改条形图样式',
        'Change selection mode': '更改选择模式',
        'Change theme': '更改主题',
        'Adjust shadow quality': '调整阴影质量',
        'Change font': '更改字体',
        'Adjust font size': '调整字体大小'
    }
else:
    Tr = {}


class GraphModifier(QObject):
    # 奥卢 温度
    tempOulu = (
        (-6.7, -11.7, -9.7, 3.3, 9.2, 14.0, 16.3, 17.8, 10.2, 2.1, -2.6, -0.3),
        (-6.8, -13.3, 0.2, 1.5, 7.9, 13.4, 16.1, 15.5, 8.2, 5.4, -2.6, -0.8),
        (-4.2, -4.0, -4.6, 1.9, 7.3, 12.5, 15.0, 12.8, 7.6, 5.1, -0.9, -1.3),
        (-7.8, -8.8, -4.2, 0.7, 9.3, 13.2, 15.8, 15.5, 11.2, 0.6, 0.7, -8.4),
        (-14.4, -12.1, -7.0, 2.3, 11.0, 12.6, 18.8, 13.8, 9.4, 3.9, -5.6, -13.0),
        (-9.0, -15.2, -3.8, 2.6, 8.3, 15.9, 18.6, 14.9, 11.1, 5.3, 1.8, -0.2),
        (-8.7, -11.3, -2.3, 0.4, 7.5, 12.2, 16.4, 14.1, 9.2, 3.1, 0.3, -12.1),
        (-7.9, -5.3, -9.1, 0.8, 11.6, 16.6, 15.9, 15.5, 11.2, 4.0, 0.1, -1.9)
    )

    # 赫尔辛基 温度
    tempHelsinki = (
        (-3.7, -7.8, -5.4, 3.4, 10.7, 15.4, 18.6, 18.7, 14.3, 8.5, 2.9, 4.1),
        (-1.2, -7.5, 3.1, 5.5, 10.3, 15.9, 17.4, 17.9, 11.2, 7.3, 1.1, 0.5),
        (-0.6, 1.2, 0.2, 6.3, 10.2, 13.8, 18.1, 15.1, 10.1, 9.4, 2.5, 0.4),
        (-2.9, -3.5, -0.9, 4.7, 10.9, 14.0, 17.4, 16.8, 13.2, 4.1, 2.6, -2.3),
        (-10.2, -8.0, -1.9, 6.6, 11.3, 14.5, 21.0, 18.8, 12.6, 6.1, -0.5, -7.3),
        (-4.4, -9.1, -2.0, 5.5, 9.9, 15.6, 20.8, 17.8, 13.4, 8.9, 3.6, 1.5),
        (-3.5, -3.2, -0.7, 4.0, 11.1, 13.4, 17.3, 15.8, 13.1, 6.4, 4.1, -5.1),
        (-4.8, -1.8, -5.0, 2.9, 12.8, 17.2, 18.0, 17.1, 12.5, 7.5, 4.5, 2.3)
    )

    months = (
        "January", "February", "March", "April", "May", "June",
        "July", "August", "September", "October", "November", "December"
    )

    years = ("2006", "2007", "2008", "2009", "2010", "2011", "2012", "2013")

    shadowQualityChanged = pyqtSignal(int)  # 阴影质量改变信号
    backgroundEnabledChanged = pyqtSignal(bool)  # 背景开启信号
    gridEnabledChanged = pyqtSignal(bool)  # 网格开启信号
    fontChanged = pyqtSignal(QFont)  # 字体改变信号
    fontSizeChanged = pyqtSignal(int)  # 字体大小改变信号

    def __init__(self, bargraph):
        super(GraphModifier, self).__init__()

        self.m_graph = bargraph  # Q3DBars 实例

        self.m_xRotation = 0.0  # 水平旋转角度
        self.m_yRotation = 0.0  # 垂直旋转角度
        self.m_fontSize = 30
        self.m_segments = 4
        self.m_subSegments = 3
        self.m_minval = -20.0
        self.m_maxval = 20.0
        self.m_temperatureAxis = QValue3DAxis()  # 温度轴
        self.m_yearAxis = QCategory3DAxis()  # 年份轴
        self.m_monthAxis = QCategory3DAxis()  # 月份轴
        self.m_primarySeries = QBar3DSeries()  # 主序列
        self.m_secondarySeries = QBar3DSeries()  # 次序列
        self.m_barMesh = QAbstract3DSeries.MeshBevelBar  # 预定义的网格类型
        self.m_smooth = False  # 是否平滑

        # 阴影以柔化的边缘高质量渲染
        self.m_graph.setShadowQuality(QAbstract3DGraph.ShadowQualitySoftMedium)
        # 当前主题Q3DTheme设置背景是否可见
        self.m_graph.activeTheme().setBackgroundEnabled(False)
        # 当前主题Q3DTheme设置字体
        self.m_graph.activeTheme().setFont(
            QFont('Times New Roman', self.m_fontSize))
        # 当前主题Q3DTheme设置标签是使用彩色背景还是使用完全透明的背景绘制
        self.m_graph.activeTheme().setLabelBackgroundEnabled(True)
        # 是否按比例将比例尺设置为单个系列比例尺来缩放比例
        self.m_graph.setMultiSeriesUniform(True)

        self.m_temperatureAxis.setTitle(Tr.get("Average temperature", "Average temperature"))
        # 轴上的段数。这表明绘制了多少标签。要绘制的网格线的数量使用公式计算：segments * subsegments + 1。预设默认值为5。该值不能低于1
        self.m_temperatureAxis.setSegmentCount(self.m_segments)
        # 轴上每个段内的子段数。
        # 除每个线段外，还在每个子线段之间绘制网格线。预设默认值为1。该值不能低于1。
        self.m_temperatureAxis.setSubSegmentCount(self.m_subSegments)
        self.m_temperatureAxis.setRange(self.m_minval, self.m_maxval)
        self.m_temperatureAxis.setLabelFormat(u"%.1f \N{degree sign}C")

        self.m_yearAxis.setTitle("Year")
        self.m_monthAxis.setTitle("Month")

        self.m_graph.setValueAxis(self.m_temperatureAxis)
        # 设置活动行的轴为年份
        self.m_graph.setRowAxis(self.m_yearAxis)
        # 设置活动列的轴为月份
        self.m_graph.setColumnAxis(self.m_monthAxis)

        self.m_primarySeries.setItemLabelFormat(
            "Oulu - @colLabel @rowLabel: @valueLabel")
        # 设置网格类型
        self.m_primarySeries.setMesh(QAbstract3DSeries.MeshBevelBar)
        self.m_primarySeries.setMeshSmooth(False)

        self.m_secondarySeries.setItemLabelFormat(
            "Helsinki - @colLabel @rowLabel: @valueLabel")
        self.m_secondarySeries.setMesh(QAbstract3DSeries.MeshBevelBar)
        self.m_secondarySeries.setMeshSmooth(False)
        self.m_secondarySeries.setVisible(False)

        self.m_graph.addSeries(self.m_primarySeries)
        self.m_graph.addSeries(self.m_secondarySeries)

        self.m_preset = Q3DCamera.CameraPresetFront
        self.changePresetCamera()

        self.resetTemperatureData()

    def resetTemperatureData(self):
        # 重置温度数据
        dataSet = []
        for row in self.tempOulu:
            dataSet.append([QBarDataItem(v) for v in row])

        self.m_primarySeries.dataProxy().resetArray(dataSet, self.years,
                                                    self.months)

        dataSet = []
        for row in self.tempHelsinki:
            dataSet.append([QBarDataItem(v) for v in row])

        self.m_secondarySeries.dataProxy().resetArray(dataSet, self.years,
                                                      self.months)

    def changeRange(self, range):
        if range >= len(self.years):
            self.m_yearAxis.setRange(0, len(self.years) - 1)
        else:
            self.m_yearAxis.setRange(range, range)

    def changeStyle(self, style):
        comboBox = self.sender()
        if isinstance(comboBox, QComboBox):
            self.m_barMesh = QAbstract3DSeries.Mesh(comboBox.itemData(style))
            self.m_primarySeries.setMesh(self.m_barMesh)
            self.m_secondarySeries.setMesh(self.m_barMesh)

    def changePresetCamera(self):
        # 修改摄像机的预定义位置
        self.m_graph.scene().activeCamera().setCameraPreset(self.m_preset)

        preset = int(self.m_preset) + 1
        if preset > Q3DCamera.CameraPresetDirectlyBelow:
            self.m_preset = Q3DCamera.CameraPresetFrontLow
        else:
            self.m_preset = Q3DCamera.CameraPreset(preset)

    def changeTheme(self, theme):
        # 切换主题
        currentTheme = self.m_graph.activeTheme()
        currentTheme.setType(Q3DTheme.Theme(theme))
        self.backgroundEnabledChanged.emit(currentTheme.isBackgroundEnabled())
        self.gridEnabledChanged.emit(currentTheme.isGridEnabled())
        self.fontChanged.emit(currentTheme.font())
        self.fontSizeChanged.emit(currentTheme.font().pointSize())

    def changeLabelBackground(self):
        self.m_graph.activeTheme().setLabelBackgroundEnabled(
            not self.m_graph.activeTheme().isLabelBackgroundEnabled())

    def changeSelectionMode(self, selectionMode):
        comboBox = self.sender()
        if isinstance(comboBox, QComboBox):
            flags = comboBox.itemData(selectionMode)
            self.m_graph.setSelectionMode(
                QAbstract3DGraph.SelectionFlags(flags))

    def changeFont(self, font):
        self.m_graph.activeTheme().setFont(font)

    def changeFontSize(self, fontsize):
        self.m_fontSize = fontsize
        font = self.m_graph.activeTheme().font()
        font.setPointSize(self.m_fontSize)
        self.m_graph.activeTheme().setFont(font)

    def shadowQualityUpdatedByVisual(self, sq):
        self.shadowQualityChanged.emit(int(sq))

    def changeShadowQuality(self, quality):
        sq = QAbstract3DGraph.ShadowQuality(quality)
        self.m_graph.setShadowQuality(sq)
        self.shadowQualityChanged.emit(quality)

    def rotateX(self, rotation):
        self.m_xRotation = rotation
        self.m_graph.scene().activeCamera().setCameraPosition(
            self.m_xRotation, self.m_yRotation)

    def rotateY(self, rotation):
        self.m_yRotation = rotation
        self.m_graph.scene().activeCamera().setCameraPosition(
            self.m_xRotation, self.m_yRotation)

    def setBackgroundEnabled(self, enabled):
        self.m_graph.activeTheme().setBackgroundEnabled(enabled)

    def setGridEnabled(self, enabled):
        self.m_graph.activeTheme().setGridEnabled(enabled)

    def setSmoothBars(self, smooth):
        self.m_smooth = bool(smooth)
        self.m_primarySeries.setMeshSmooth(self.m_smooth)
        self.m_secondarySeries.setMeshSmooth(self.m_smooth)

    def setSeriesVisibility(self, enabled):
        self.m_secondarySeries.setVisible(enabled)


if __name__ == '__main__':
    import sys

    app = QApplication(sys.argv)
    widgetgraph = Q3DBars()
    container = QWidget.createWindowContainer(widgetgraph)

    screenSize = widgetgraph.screen().size()
    container.setMinimumSize(
        QSize(screenSize.width() / 2, screenSize.height() / 1.5))
    container.setMaximumSize(screenSize)
    container.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)
    container.setFocusPolicy(Qt.StrongFocus)

    widget = QWidget()
    hLayout = QHBoxLayout(widget)
    vLayout = QVBoxLayout()
    hLayout.addWidget(container, 1)
    hLayout.addLayout(vLayout)

    widget.setWindowTitle(Tr.get(
        "Average temperatures in Oulu and Helsinki, Finland (2006-2013)",
        "Average temperatures in Oulu and Helsinki, Finland (2006-2013)"))

    themeList = QComboBox()
    themeList.addItem("Qt")
    themeList.addItem("Primary Colors")
    themeList.addItem("Digia")
    themeList.addItem("Stone Moss")
    themeList.addItem("Army Blue")
    themeList.addItem("Retro")
    themeList.addItem("Ebony")
    themeList.addItem("Isabelle")
    themeList.setCurrentIndex(0)

    labelButton = QPushButton(Tr.get("Change label style", "Change label style"))

    smoothCheckBox = QCheckBox(Tr.get("Smooth bars", "Smooth bars"))

    barStyleList = QComboBox()
    barStyleList.addItem("Bar", QAbstract3DSeries.MeshBar)
    barStyleList.addItem("Pyramid", QAbstract3DSeries.MeshPyramid)
    barStyleList.addItem("Cone", QAbstract3DSeries.MeshCone)
    barStyleList.addItem("Cylinder", QAbstract3DSeries.MeshCylinder)
    barStyleList.addItem("Bevel bar", QAbstract3DSeries.MeshBevelBar)
    barStyleList.addItem("Sphere", QAbstract3DSeries.MeshSphere)
    barStyleList.setCurrentIndex(4)

    cameraButton = QPushButton(Tr.get("Change camera preset", "Change camera preset"))

    selectionModeList = QComboBox()
    selectionModeList.addItem("None", QAbstract3DGraph.SelectionNone)
    selectionModeList.addItem("Bar", QAbstract3DGraph.SelectionItem)
    selectionModeList.addItem("Row", QAbstract3DGraph.SelectionRow)
    selectionModeList.addItem("Bar and Row",
                              QAbstract3DGraph.SelectionItemAndRow)
    selectionModeList.addItem("Column", QAbstract3DGraph.SelectionColumn)
    selectionModeList.addItem("Bar and Column",
                              QAbstract3DGraph.SelectionItemAndColumn)
    selectionModeList.addItem("Row and Column",
                              QAbstract3DGraph.SelectionRowAndColumn)
    selectionModeList.addItem("Bar, Row and Column",
                              QAbstract3DGraph.SelectionItemRowAndColumn)
    selectionModeList.addItem("Slice into Row",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionRow)
    selectionModeList.addItem("Slice into Row and Item",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionItemAndRow)
    selectionModeList.addItem("Slice into Column",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionColumn)
    selectionModeList.addItem("Slice into Column and Item",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionItemAndColumn)
    selectionModeList.addItem("Multi: Bar, Row, Col",
                              QAbstract3DGraph.SelectionItemRowAndColumn | QAbstract3DGraph.SelectionMultiSeries)
    selectionModeList.addItem("Multi, Slice: Row, Item",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionItemAndRow | QAbstract3DGraph.SelectionMultiSeries)
    selectionModeList.addItem("Multi, Slice: Col, Item",
                              QAbstract3DGraph.SelectionSlice | QAbstract3DGraph.SelectionItemAndColumn | QAbstract3DGraph.SelectionMultiSeries)
    selectionModeList.setCurrentIndex(1)

    backgroundCheckBox = QCheckBox(Tr.get("Show background", "Show background"))

    gridCheckBox = QCheckBox(Tr.get("Show grid", "Show grid"))
    gridCheckBox.setChecked(True)

    seriesCheckBox = QCheckBox(Tr.get("Show second series", "Show second series"))

    rotationSliderX = QSlider(Qt.Horizontal)
    rotationSliderX.setTickInterval(30)
    rotationSliderX.setTickPosition(QSlider.TicksBelow)
    rotationSliderX.setMinimum(-180)
    rotationSliderX.setValue(0)
    rotationSliderX.setMaximum(180)
    rotationSliderY = QSlider(Qt.Horizontal)
    rotationSliderY.setTickInterval(15)
    rotationSliderY.setTickPosition(QSlider.TicksAbove)
    rotationSliderY.setMinimum(-90)
    rotationSliderY.setValue(0)
    rotationSliderY.setMaximum(90)

    fontSizeSlider = QSlider(Qt.Horizontal)
    fontSizeSlider.setTickInterval(10)
    fontSizeSlider.setTickPosition(QSlider.TicksBelow)
    fontSizeSlider.setMinimum(1)
    fontSizeSlider.setValue(30)
    fontSizeSlider.setMaximum(100)

    fontList = QFontComboBox()
    fontList.setCurrentFont(QFont('Times New Roman'))

    shadowQuality = QComboBox()
    shadowQuality.addItem("None")
    shadowQuality.addItem(Tr.get("Low", "Low"))
    shadowQuality.addItem(Tr.get("Medium", "Medium"))
    shadowQuality.addItem(Tr.get("High", "High"))
    shadowQuality.addItem(Tr.get("Low Soft", "Low Soft"))
    shadowQuality.addItem(Tr.get("Medium Soft", "Medium Soft"))
    shadowQuality.addItem(Tr.get("High Soft", "High Soft"))
    shadowQuality.setCurrentIndex(5)

    rangeList = QComboBox()
    rangeList.addItems(GraphModifier.years)
    rangeList.addItem("All")
    rangeList.setCurrentIndex(len(GraphModifier.years))

    vLayout.addWidget(QLabel(Tr.get("Rotate horizontally", "Rotate horizontally")))
    vLayout.addWidget(rotationSliderX, 0, Qt.AlignTop)
    vLayout.addWidget(QLabel(Tr.get("Rotate vertically", "Rotate vertically")))
    vLayout.addWidget(rotationSliderY, 0, Qt.AlignTop)
    vLayout.addWidget(labelButton, 0, Qt.AlignTop)
    vLayout.addWidget(cameraButton, 0, Qt.AlignTop)
    vLayout.addWidget(backgroundCheckBox)
    vLayout.addWidget(gridCheckBox)
    vLayout.addWidget(smoothCheckBox)
    vLayout.addWidget(seriesCheckBox)
    vLayout.addWidget(QLabel(Tr.get("Show year", "Show year")))
    vLayout.addWidget(rangeList)
    vLayout.addWidget(QLabel(Tr.get("Change bar style", "Change bar style")))
    vLayout.addWidget(barStyleList)
    vLayout.addWidget(QLabel(Tr.get("Change selection mode", "Change selection mode")))
    vLayout.addWidget(selectionModeList)
    vLayout.addWidget(QLabel(Tr.get("Change theme", "Change theme")))
    vLayout.addWidget(themeList)
    vLayout.addWidget(QLabel(Tr.get("Adjust shadow quality", "Adjust shadow quality")))
    vLayout.addWidget(shadowQuality)
    vLayout.addWidget(QLabel(Tr.get("Change font", "Change font")))
    vLayout.addWidget(fontList)
    vLayout.addWidget(QLabel(Tr.get("Adjust font size", "Adjust font size")))
    vLayout.addWidget(fontSizeSlider, 1, Qt.AlignTop)

    modifier = GraphModifier(widgetgraph)

    rotationSliderX.valueChanged.connect(modifier.rotateX)
    rotationSliderY.valueChanged.connect(modifier.rotateY)

    labelButton.clicked.connect(modifier.changeLabelBackground)
    cameraButton.clicked.connect(modifier.changePresetCamera)

    backgroundCheckBox.stateChanged.connect(modifier.setBackgroundEnabled)
    gridCheckBox.stateChanged.connect(modifier.setGridEnabled)
    smoothCheckBox.stateChanged.connect(modifier.setSmoothBars)
    seriesCheckBox.stateChanged.connect(modifier.setSeriesVisibility)

    modifier.backgroundEnabledChanged.connect(backgroundCheckBox.setChecked)
    modifier.gridEnabledChanged.connect(gridCheckBox.setChecked)

    rangeList.currentIndexChanged.connect(modifier.changeRange)

    barStyleList.currentIndexChanged.connect(modifier.changeStyle)

    selectionModeList.currentIndexChanged.connect(modifier.changeSelectionMode)

    themeList.currentIndexChanged.connect(modifier.changeTheme)

    shadowQuality.currentIndexChanged.connect(modifier.changeShadowQuality)

    modifier.shadowQualityChanged.connect(shadowQuality.setCurrentIndex)
    widgetgraph.shadowQualityChanged.connect(
        modifier.shadowQualityUpdatedByVisual)

    fontSizeSlider.valueChanged.connect(modifier.changeFontSize)
    fontList.currentFontChanged.connect(modifier.changeFont)

    modifier.fontSizeChanged.connect(fontSizeSlider.setValue)
    modifier.fontChanged.connect(fontList.setCurrentFont)

    widget.show()
    sys.exit(app.exec_())