- Qt 6.7
- Qt Graphs
- Graph Gallery
- Qt Graphs | Commercial or GPLv3

# Graph Gallery

     // Copyright (C) 2023 The Qt Company Ltd.
     // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause

     #include "bargraph.h"

     #include <QtGui/qfontdatabase.h>
     #include <QtWidgets/qboxlayout.h>
     #include <QtWidgets/qbuttongroup.h>
     #include <QtWidgets/qcheckbox.h>
     #include <QtWidgets/qfontcombobox.h>
     #include <QtWidgets/qlabel.h>
     #include <QtWidgets/qpushbutton.h>
     #include <QtWidgets/qradiobutton.h>
     #include <QtWidgets/qslider.h>

     using namespace Qt::StringLiterals;

     BarGraph::BarGraph()
     {
         m_barsGraph = new Q3DBars();
         initialize();
     }

     void BarGraph::initialize()
     {
         m_barsWidget = new QWidget;
         auto *hLayout = new QHBoxLayout(m_barsWidget);
         QSize screenSize = m_barsGraph->screen()->size();
         m_barsGraph->setMinimumSize(QSize(screenSize.width() / 2, screenSize.height() / 1.75));
         m_barsGraph->setMaximumSize(screenSize);
         m_barsGraph->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
         m_barsGraph->setFocusPolicy(Qt::StrongFocus);
         hLayout->addWidget(m_barsGraph, 1);

         auto *vLayout = new QVBoxLayout();
         hLayout->addLayout(vLayout);

         auto *themeList = new QComboBox(m_barsWidget);
         themeList->addItem(u"Qt"_s);
         themeList->addItem(u"Primary Colors"_s);
         themeList->addItem(u"Stone Moss"_s);
         themeList->addItem(u"Army Blue"_s);
         themeList->addItem(u"Retro"_s);
         themeList->addItem(u"Ebony"_s);
         themeList->addItem(u"Isabelle"_s);
         themeList->setCurrentIndex(0);

         auto *labelButton = new QPushButton(m_barsWidget);
         labelButton->setText(u"Change label style"_s);

         auto *smoothCheckBox = new QCheckBox(m_barsWidget);
         smoothCheckBox->setText(u"Smooth bars"_s);
         smoothCheckBox->setChecked(false);

         auto *barStyleList = new QComboBox(m_barsWidget);
         const QMetaObject &metaObj = QAbstract3DSeries::staticMetaObject;
         int index = metaObj.indexOfEnumerator("Mesh");
         QMetaEnum metaEnum = metaObj.enumerator(index);
         barStyleList->addItem(u"Bar"_s, metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::Bar)));
         barStyleList->addItem(u"Pyramid"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::Pyramid)));
         barStyleList->addItem(u"Cone"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::Cone)));
         barStyleList->addItem(u"Cylinder"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::Cylinder)));
         barStyleList->addItem(u"Bevel bar"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::BevelBar)));
         barStyleList->addItem(u"Sphere"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::Sphere)));
         barStyleList->addItem(u"UserDefined"_s,
                               metaEnum.value(static_cast<int>(QAbstract3DSeries::Mesh::UserDefined)));
         barStyleList->setCurrentIndex(4);

         auto *cameraButton = new QPushButton(m_barsWidget);
         cameraButton->setText(u"Change camera preset"_s);

         auto *zoomToSelectedButton = new QPushButton(m_barsWidget);
         zoomToSelectedButton->setText(u"Zoom to selected bar"_s);

         auto *selectionModeList = new QComboBox(m_barsWidget);
         selectionModeList->addItem(u"None"_s, int(QAbstract3DGraph::SelectionNone));
         selectionModeList->addItem(u"Bar"_s, int(QAbstract3DGraph::SelectionItem));
         selectionModeList->addItem(u"Row"_s, int(QAbstract3DGraph::SelectionRow));
         selectionModeList->addItem(u"Bar and Row"_s, int(QAbstract3DGraph::SelectionItemAndRow));
         selectionModeList->addItem(u"Column"_s, int(QAbstract3DGraph::SelectionColumn));
         selectionModeList->addItem(u"Bar and Column"_s, int(QAbstract3DGraph::SelectionItemAndColumn));
         selectionModeList->addItem(u"Row and Column"_s, int(QAbstract3DGraph::SelectionRowAndColumn));
         selectionModeList->addItem(u"Bar, Row and Column"_s,
                                    int(QAbstract3DGraph::SelectionItemRowAndColumn));
         selectionModeList->addItem(u"Slice into Row"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionRow));
         selectionModeList->addItem(u"Slice into Row and Item"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionItemAndRow));
         selectionModeList->addItem(u"Slice into Column"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionColumn));
         selectionModeList->addItem(u"Slice into Column and Item"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionItemAndColumn));
         selectionModeList->addItem(u"Multi: Bar, Row, Col"_s,
                                    int(QAbstract3DGraph::SelectionItemRowAndColumn
                                        | QAbstract3DGraph::SelectionMultiSeries));
         selectionModeList->addItem(u"Multi, Slice: Row, Item"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionItemAndRow
                                        | QAbstract3DGraph::SelectionMultiSeries));
         selectionModeList->addItem(u"Multi, Slice: Col, Item"_s,
                                    int(QAbstract3DGraph::SelectionSlice
                                        | QAbstract3DGraph::SelectionItemAndColumn
                                        | QAbstract3DGraph::SelectionMultiSeries));
         selectionModeList->setCurrentIndex(1);

         auto *backgroundCheckBox = new QCheckBox(m_barsWidget);
         backgroundCheckBox->setText(u"Show background"_s);
         backgroundCheckBox->setChecked(false);

         auto *gridCheckBox = new QCheckBox(m_barsWidget);
         gridCheckBox->setText(u"Show grid"_s);
         gridCheckBox->setChecked(true);

         auto *seriesCheckBox = new QCheckBox(m_barsWidget);
         seriesCheckBox->setText(u"Show second series"_s);
         seriesCheckBox->setChecked(false);

         auto *reverseValueAxisCheckBox = new QCheckBox(m_barsWidget);
         reverseValueAxisCheckBox->setText(u"Reverse value axis"_s);
         reverseValueAxisCheckBox->setChecked(false);

         auto *rotationSliderX = new QSlider(Qt::Horizontal, m_barsWidget);
         rotationSliderX->setTickInterval(30);
         rotationSliderX->setTickPosition(QSlider::TicksBelow);
         rotationSliderX->setMinimum(-180);
         rotationSliderX->setValue(0);
         rotationSliderX->setMaximum(180);
         auto *rotationSliderY = new QSlider(Qt::Horizontal, m_barsWidget);
         rotationSliderY->setTickInterval(15);
         rotationSliderY->setTickPosition(QSlider::TicksAbove);
         rotationSliderY->setMinimum(-90);
         rotationSliderY->setValue(0);
         rotationSliderY->setMaximum(90);

         auto *fontSizeSlider = new QSlider(Qt::Horizontal, m_barsWidget);
         fontSizeSlider->setTickInterval(10);
         fontSizeSlider->setTickPosition(QSlider::TicksBelow);
         fontSizeSlider->setMinimum(1);
         fontSizeSlider->setValue(30);
         fontSizeSlider->setMaximum(100);

         auto *fontList = new QFontComboBox(m_barsWidget);
         fontList->setCurrentFont(QFont("Times New Roman"));

         auto *shadowQuality = new QComboBox(m_barsWidget);
         shadowQuality->addItem(u"None"_s);
         shadowQuality->addItem(u"Low"_s);
         shadowQuality->addItem(u"Medium"_s);
         shadowQuality->addItem(u"High"_s);
         shadowQuality->addItem(u"Low Soft"_s);
         shadowQuality->addItem(u"Medium Soft"_s);
         shadowQuality->addItem(u"High Soft"_s);
         shadowQuality->setCurrentIndex(5);

         auto *rangeList = new QComboBox(m_barsWidget);
         rangeList->addItem(u"2015"_s);
         rangeList->addItem(u"2016"_s);
         rangeList->addItem(u"2017"_s);
         rangeList->addItem(u"2018"_s);
         rangeList->addItem(u"2019"_s);
         rangeList->addItem(u"2020"_s);
         rangeList->addItem(u"2021"_s);
         rangeList->addItem(u"2022"_s);
         rangeList->addItem(u"All"_s);
         rangeList->setCurrentIndex(8);

         auto *axisTitlesVisibleCB = new QCheckBox(m_barsWidget);
         axisTitlesVisibleCB->setText(u"Axis titles visible"_s);
         axisTitlesVisibleCB->setChecked(true);

         auto *axisTitlesFixedCB = new QCheckBox(m_barsWidget);
         axisTitlesFixedCB->setText(u"Axis titles fixed"_s);
         axisTitlesFixedCB->setChecked(true);

         auto *axisLabelRotationSlider = new QSlider(Qt::Horizontal, m_barsWidget);
         axisLabelRotationSlider->setTickInterval(10);
         axisLabelRotationSlider->setTickPosition(QSlider::TicksBelow);
         axisLabelRotationSlider->setMinimum(0);
         axisLabelRotationSlider->setValue(30);
         axisLabelRotationSlider->setMaximum(90);

         auto *modeGroup = new QButtonGroup(m_barsWidget);
         auto *modeWeather = new QRadioButton(u"Temperature Data"_s, m_barsWidget);
         modeWeather->setChecked(true);
         auto *modeCustomProxy = new QRadioButton(u"Custom Proxy Data"_s, m_barsWidget);
         modeGroup->addButton(modeWeather);
         modeGroup->addButton(modeCustomProxy);

         vLayout->addWidget(new QLabel(u"Rotate horizontally"_s));
         vLayout->addWidget(rotationSliderX, 0, Qt::AlignTop);
         vLayout->addWidget(new QLabel(u"Rotate vertically"_s));
         vLayout->addWidget(rotationSliderY, 0, Qt::AlignTop);
         vLayout->addWidget(labelButton, 0, Qt::AlignTop);
         vLayout->addWidget(cameraButton, 0, Qt::AlignTop);
         vLayout->addWidget(zoomToSelectedButton, 0, Qt::AlignTop);
         vLayout->addWidget(backgroundCheckBox);
         vLayout->addWidget(gridCheckBox);
         vLayout->addWidget(smoothCheckBox);
         vLayout->addWidget(seriesCheckBox);
         vLayout->addWidget(reverseValueAxisCheckBox);
         vLayout->addWidget(axisTitlesVisibleCB);
         vLayout->addWidget(axisTitlesFixedCB);
         vLayout->addWidget(new QLabel(u"Show year"_s));
         vLayout->addWidget(rangeList);
         vLayout->addWidget(new QLabel(u"Change bar style"_s));
         vLayout->addWidget(barStyleList);
         vLayout->addWidget(new QLabel(u"Change selection mode"_s));
         vLayout->addWidget(selectionModeList);
         vLayout->addWidget(new QLabel(u"Change theme"_s));
         vLayout->addWidget(themeList);
         vLayout->addWidget(new QLabel(u"Adjust shadow quality"_s));
         vLayout->addWidget(shadowQuality);
         vLayout->addWidget(new QLabel(u"Change font"_s));
         vLayout->addWidget(fontList);
         vLayout->addWidget(new QLabel(u"Adjust font size"_s));
         vLayout->addWidget(fontSizeSlider);
         vLayout->addWidget(new QLabel(u"Axis label rotation"_s));
         vLayout->addWidget(axisLabelRotationSlider, 0, Qt::AlignTop);
         vLayout->addWidget(modeWeather, 0, Qt::AlignTop);
         vLayout->addWidget(modeCustomProxy, 1, Qt::AlignTop);

         // Raise the graph to the top of the widget stack, to hide UI if resized smaller
         m_barsGraph->raise();

         m_modifier = new GraphModifier(m_barsGraph, this);

         QObject::connect(rotationSliderX, &QSlider::valueChanged, m_modifier, &GraphModifier::rotateX);
         QObject::connect(rotationSliderY, &QSlider::valueChanged, m_modifier, &GraphModifier::rotateY);

         QObject::connect(labelButton,
                          &QPushButton::clicked,
                          m_modifier,
                          &GraphModifier::changeLabelBackground);
         QObject::connect(cameraButton,
                          &QPushButton::clicked,
                          m_modifier,
                          &GraphModifier::changePresetCamera);
         QObject::connect(zoomToSelectedButton,
                          &QPushButton::clicked,
                          m_modifier,
                          &GraphModifier::zoomToSelectedBar);

         QObject::connect(backgroundCheckBox,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setBackgroundEnabled);
         QObject::connect(gridCheckBox,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setGridEnabled);
         QObject::connect(smoothCheckBox,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setSmoothBars);
         QObject::connect(seriesCheckBox,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setSeriesVisibility);
         QObject::connect(reverseValueAxisCheckBox,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setReverseValueAxis);

         QObject::connect(m_modifier,
                          &GraphModifier::backgroundEnabledChanged,
                          backgroundCheckBox,
                          &QCheckBox::setChecked);
         QObject::connect(m_modifier,
                          &GraphModifier::gridEnabledChanged,
                          gridCheckBox,
                          &QCheckBox::setChecked);

         QObject::connect(rangeList,
                          &QComboBox::currentIndexChanged,
                          m_modifier,
                          &GraphModifier::changeRange);

         QObject::connect(barStyleList,
                          &QComboBox::currentIndexChanged,
                          m_modifier,
                          &GraphModifier::changeStyle);

         QObject::connect(selectionModeList,
                          &QComboBox::currentIndexChanged,
                          m_modifier,
                          &GraphModifier::changeSelectionMode);

         QObject::connect(themeList,
                          &QComboBox::currentIndexChanged,
                          m_modifier,
                          &GraphModifier::changeTheme);

         QObject::connect(shadowQuality,
                          &QComboBox::currentIndexChanged,
                          m_modifier,
                          &GraphModifier::changeShadowQuality);

         QObject::connect(m_modifier,
                          &GraphModifier::shadowQualityChanged,
                          shadowQuality,
                          &QComboBox::setCurrentIndex);
         QObject::connect(m_barsGraph,
                          &Q3DBars::shadowQualityChanged,
                          m_modifier,
                          &GraphModifier::shadowQualityUpdatedByVisual);

         QObject::connect(fontSizeSlider,
                          &QSlider::valueChanged,
                          m_modifier,
                          &GraphModifier::changeFontSize);
         QObject::connect(fontList,
                          &QFontComboBox::currentFontChanged,
                          m_modifier,
                          &GraphModifier::changeFont);

         QObject::connect(m_modifier,
                          &GraphModifier::fontSizeChanged,
                          fontSizeSlider,
                          &QSlider::setValue);
         QObject::connect(m_modifier,
                          &GraphModifier::fontChanged,
                          fontList,
                          &QFontComboBox::setCurrentFont);

         QObject::connect(axisTitlesVisibleCB,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setAxisTitleVisibility);
         QObject::connect(axisTitlesFixedCB,
                          &QCheckBox::stateChanged,
                          m_modifier,
                          &GraphModifier::setAxisTitleFixed);
         QObject::connect(axisLabelRotationSlider,
                          &QSlider::valueChanged,
                          m_modifier,
                          &GraphModifier::changeLabelRotation);

         QObject::connect(modeWeather,
                          &QRadioButton::toggled,
                          m_modifier,
                          &GraphModifier::setDataModeToWeather);
         QObject::connect(modeCustomProxy,
                          &QRadioButton::toggled,
                          m_modifier,
                          &GraphModifier::setDataModeToCustom);
         QObject::connect(modeWeather, &QRadioButton::toggled, seriesCheckBox, &QCheckBox::setEnabled);
         QObject::connect(modeWeather, &QRadioButton::toggled, rangeList, &QComboBox::setEnabled);
         QObject::connect(modeWeather,
                          &QRadioButton::toggled,
                          axisTitlesVisibleCB,
                          &QCheckBox::setEnabled);
         QObject::connect(modeWeather, &QRadioButton::toggled, axisTitlesFixedCB, &QCheckBox::setEnabled);
         QObject::connect(modeWeather,
                          &QRadioButton::toggled,
                          axisLabelRotationSlider,
                          &QSlider::setEnabled);
     }