qiurui
/
qtgraphs
mirror of https://github.com/qt/qtgraphs.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
qtgraphs/examples/graphs/3d/widgetgraphgallery/graphmodifier.cpp

460 lines
16 KiB
C++
Raw Blame History

// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "graphmodifier.h"
#include "rainfalldata.h"
#include <QtCore/qmath.h>
#include <QtGraphs/q3dscene.h>
#include <QtGraphs/qgraphstheme.h>
#include <QtGraphs/qbar3dseries.h>
#include <QtGraphs/qbardataproxy.h>
#include <QtGraphs/qcategory3daxis.h>
#include <QtGraphs/qvalue3daxis.h>
#include <QtWidgets/qcombobox.h>
using namespace Qt::StringLiterals;
// TODO: Many of the values do not affect custom proxy series now - should be fixed
//! [set up the graph]
GraphModifier::GraphModifier(Q3DBarsWidgetItem *bargraph, QObject *parent)
: QObject(parent)
, m_graph(bargraph)
//! [set up the graph]
//! [set up axes]
, m_temperatureAxis(new QValue3DAxis)
, m_yearAxis(new QCategory3DAxis)
, m_monthAxis(new QCategory3DAxis)
, m_primarySeries(new QBar3DSeries)
, m_secondarySeries(new QBar3DSeries)
//! [set up axes]
, m_celsiusString(u"°C"_s)
{
//! [adjust visuals]
m_graph->setShadowQuality(QtGraphs3D::ShadowQuality::SoftMedium);
m_graph->setMultiSeriesUniform(true);
// These are set through the active theme
m_graph->activeTheme()->setPlotAreaBackgroundVisible(false);
m_graph->activeTheme()->setLabelFont(QFont("Times New Roman", m_fontSize));
m_graph->activeTheme()->setLabelBackgroundVisible(true);
//! [adjust visuals]
m_months = {"January",
"February",
"March",
"April",
"May",
"June",
"July",
"August",
"September",
"October",
"November",
"December"};
m_years = {"2015", "2016", "2017", "2018", "2019", "2020", "2021", "2022"};
//! [activate axes]
m_temperatureAxis->setTitle("Average temperature");
m_temperatureAxis->setSegmentCount(m_segments);
m_temperatureAxis->setSubSegmentCount(m_subSegments);
m_temperatureAxis->setRange(m_minval, m_maxval);
m_temperatureAxis->setLabelFormat(u"%.1f "_s + m_celsiusString);
m_temperatureAxis->setLabelAutoAngle(30.0f);
m_temperatureAxis->setTitleVisible(true);
m_yearAxis->setTitle("Year");
//! [auto angle]
m_yearAxis->setLabelAutoAngle(30.0f);
//! [auto angle]
m_yearAxis->setTitleVisible(true);
m_monthAxis->setTitle("Month");
m_monthAxis->setLabelAutoAngle(30.0f);
m_monthAxis->setTitleVisible(true);
m_graph->setValueAxis(m_temperatureAxis);
m_graph->setRowAxis(m_yearAxis);
m_graph->setColumnAxis(m_monthAxis);
//! [activate axes]
//! [initialize series visuals]
m_primarySeries->setItemLabelFormat(u"Oulu - @colLabel @rowLabel: @valueLabel"_s);
m_primarySeries->setMesh(QAbstract3DSeries::Mesh::BevelBar);
m_primarySeries->setMeshSmooth(false);
m_secondarySeries->setItemLabelFormat(u"Helsinki - @colLabel @rowLabel: @valueLabel"_s);
m_secondarySeries->setMesh(QAbstract3DSeries::Mesh::BevelBar);
m_secondarySeries->setMeshSmooth(false);
m_secondarySeries->setVisible(false);
//! [initialize series visuals]
//! [add series]
m_graph->addSeries(m_primarySeries);
m_graph->addSeries(m_secondarySeries);
//! [add series]
//! [invoke camera preset]
changePresetCamera();
//! [invoke camera preset]
//! [invoke data reset]
resetTemperatureData();
//! [invoke data reset]
// Set up property animations for zooming to the selected bar
//! [animation setup]
m_defaultAngleX = m_graph->cameraXRotation();
m_defaultAngleY = m_graph->cameraYRotation();
m_defaultZoom = m_graph->cameraZoomLevel();
m_defaultTarget = m_graph->cameraTargetPosition();
m_animationCameraX.setTargetObject(m_graph);
m_animationCameraY.setTargetObject(m_graph);
m_animationCameraZoom.setTargetObject(m_graph);
m_animationCameraTarget.setTargetObject(m_graph);
m_animationCameraX.setPropertyName("cameraXRotation");
m_animationCameraY.setPropertyName("cameraYRotation");
m_animationCameraZoom.setPropertyName("cameraZoomLevel");
m_animationCameraTarget.setPropertyName("cameraTargetPosition");
int duration = 1700;
m_animationCameraX.setDuration(duration);
m_animationCameraY.setDuration(duration);
m_animationCameraZoom.setDuration(duration);
m_animationCameraTarget.setDuration(duration);
// The zoom always first zooms out above the graph and then zooms in
qreal zoomOutFraction = 0.3;
m_animationCameraX.setKeyValueAt(zoomOutFraction, QVariant::fromValue(0.0f));
m_animationCameraY.setKeyValueAt(zoomOutFraction, QVariant::fromValue(90.0f));
m_animationCameraZoom.setKeyValueAt(zoomOutFraction, QVariant::fromValue(50.0f));
m_animationCameraTarget.setKeyValueAt(zoomOutFraction,
QVariant::fromValue(QVector3D(0.0f, 0.0f, 0.0f)));
//! [animation setup]
m_customData = new RainfallData();
}
GraphModifier::~GraphModifier()
{
delete m_customData;
}
void GraphModifier::resetTemperatureData()
{
//! [set up data]
// Set up data
static const float tempOulu[8][12] = {
{-7.4f, -2.4f, 0.0f, 3.0f, 8.2f, 11.6f, 14.7f, 15.4f, 11.4f, 4.2f, 2.1f, -2.3f}, // 2015
{-13.4f, -3.9f, -1.8f, 3.1f, 10.6f, 13.7f, 17.8f, 13.6f, 10.7f, 3.5f, -3.1f, -4.2f}, // 2016
//! [set up data]
{-5.7f, -6.7f, -3.0f, -0.1f, 4.7f, 12.4f, 16.1f, 14.1f, 9.4f, 3.0f, -0.3f, -3.2f}, // 2017
{-6.4f, -11.9f, -7.4f, 1.9f, 11.4f, 12.4f, 21.5f, 16.1f, 11.0f, 4.4f, 2.1f, -4.1f}, // 2018
{-11.7f, -6.1f, -2.4f, 3.9f, 7.2f, 14.5f, 15.6f, 14.4f, 8.5f, 2.0f, -3.0f, -1.5f}, // 2019
{-2.1f, -3.4f, -1.8f, 0.6f, 7.0f, 17.1f, 15.6f, 15.4f, 11.1f, 5.6f, 1.9f, -1.7f}, // 2020
{-9.6f, -11.6f, -3.2f, 2.4f, 7.8f, 17.3f, 19.4f, 14.2f, 8.0f, 5.2f, -2.2f, -8.6f}, // 2021
{-7.3f, -6.4f, -1.8f, 1.3f, 8.1f, 15.5f, 17.6f, 17.6f, 9.1f, 5.4f, -1.5f, -4.4f} // 2022
};
static const float tempHelsinki[8][12] = {
{-2.0f, -0.1f, 1.8f, 5.1f, 9.7f, 13.7f, 16.3f, 17.3f, 12.7f, 5.4f, 4.6f, 2.1f}, // 2015
{-10.3f, -0.6f, 0.0f, 4.9f, 14.3f, 15.7f, 17.7f, 16.0f, 12.7f, 4.6f, -1.0f, -0.9f}, // 2016
{-2.9f, -3.3f, 0.7f, 2.3f, 9.9f, 13.8f, 16.1f, 15.9f, 11.4f, 5.0f, 2.7f, 0.7f}, // 2017
{-2.2f, -8.4f, -4.7f, 5.0f, 15.3f, 15.8f, 21.2f, 18.2f, 13.3f, 6.7f, 2.8f, -2.0f}, // 2018
{-6.2f, -0.5f, -0.3f, 6.8f, 10.6f, 17.9f, 17.5f, 16.8f, 11.3f, 5.2f, 1.8f, 1.4f}, // 2019
{1.9f, 0.5f, 1.7f, 4.5f, 9.5f, 18.4f, 16.5f, 16.8f, 13.0f, 8.2f, 4.4f, 0.9f}, // 2020
{-4.7f, -8.1f, -0.9f, 4.5f, 10.4f, 19.2f, 20.9f, 15.4f, 9.5f, 8.0f, 1.5f, -6.7f}, // 2021
{-3.3f, -2.2f, -0.2f, 3.3f, 9.6f, 16.9f, 18.1f, 18.9f, 9.2f, 7.6f, 2.3f, -3.4f} // 2022
};
// Create data arrays
//! [populate series vie proxies]
QBarDataArray dataSet;
QBarDataArray dataSet2;
dataSet.reserve(m_years.size());
for (qsizetype year = 0; year < m_years.size(); ++year) {
// Create a data row
QBarDataRow dataRow(m_months.size());
QBarDataRow dataRow2(m_months.size());
for (qsizetype month = 0; month < m_months.size(); ++month) {
// Add data to the row
dataRow[month].setValue(tempOulu[year][month]);
dataRow2[month].setValue(tempHelsinki[year][month]);
}
// Add the row to the set
dataSet.append(dataRow);
dataSet2.append(dataRow2);
}
// Add data to the data proxy (the data proxy assumes ownership of it)
m_primarySeries->dataProxy()->resetArray(dataSet, m_years, m_months);
m_secondarySeries->dataProxy()->resetArray(dataSet2, m_years, m_months);
//! [populate series vie proxies]
}
void GraphModifier::changeRange(int range)
{
if (range >= m_years.count())
m_yearAxis->setRange(0, m_years.count() - 1);
else
m_yearAxis->setRange(range, range);
}
void GraphModifier::changeStyle(int style)
{
QComboBox *comboBox = qobject_cast<QComboBox *>(sender());
if (comboBox) {
m_barMesh = comboBox->itemData(style).value<QAbstract3DSeries::Mesh>();
m_primarySeries->setMesh(m_barMesh);
m_secondarySeries->setMesh(m_barMesh);
m_customData->customSeries()->setMesh(m_barMesh);
if (m_barMesh == QAbstract3DSeries::Mesh::UserDefined) {
m_primarySeries->setUserDefinedMesh(":/data/narrowarrow.mesh");
m_secondarySeries->setUserDefinedMesh(":/data/narrowarrow.mesh");
m_customData->customSeries()->setUserDefinedMesh(":/data/narrowarrow.mesh");
}
}
}
void GraphModifier::changePresetCamera()
{
m_animationCameraX.stop();
m_animationCameraY.stop();
m_animationCameraZoom.stop();
m_animationCameraTarget.stop();
// Restore camera target in case animation has changed it
m_graph->setCameraTargetPosition(QVector3D(0.0f, 0.0f, 0.0f));
//! [change the preset]
static int preset = int(QtGraphs3D::CameraPreset::Front);
m_graph->setCameraPreset((QtGraphs3D::CameraPreset) preset);
if (++preset > int(QtGraphs3D::CameraPreset::DirectlyBelow))
preset = int(QtGraphs3D::CameraPreset::FrontLow);
//! [change the preset]
}
void GraphModifier::changeTheme(int theme)
{
QGraphsTheme *currentTheme = m_graph->activeTheme();
currentTheme->setTheme(QGraphsTheme::Theme(theme));
emit backgroundVisibleChanged(currentTheme->isPlotAreaBackgroundVisible());
emit gridVisibleChanged(currentTheme->isGridVisible());
emit fontChanged(currentTheme->labelFont());
emit fontSizeChanged(currentTheme->labelFont().pointSize());
}
void GraphModifier::changeLabelBackground()
{
m_graph->activeTheme()->setLabelBackgroundVisible(
!m_graph->activeTheme()->isLabelBackgroundVisible());
}
void GraphModifier::changeSelectionMode(int selectionMode)
{
const auto *comboBox = qobject_cast<QComboBox *>(sender());
if (comboBox) {
int flags = comboBox->itemData(selectionMode).toInt();
m_graph->setSelectionMode(QtGraphs3D::SelectionFlags(flags));
}
}
void GraphModifier::changeFont(const QFont &font)
{
m_graph->activeTheme()->setLabelFont(font);
}
void GraphModifier::changeFontSize(int fontsize)
{
m_fontSize = fontsize;
QFont font = m_graph->activeTheme()->labelFont();
font.setPointSize(m_fontSize);
m_graph->activeTheme()->setLabelFont(font);
}
void GraphModifier::shadowQualityUpdatedByVisual(QtGraphs3D::ShadowQuality sq)
{
int quality = int(sq);
// Updates the UI component to show correct shadow quality
emit shadowQualityChanged(quality);
}
void GraphModifier::changeLabelRotation(int rotation)
{
m_temperatureAxis->setLabelAutoAngle(float(rotation));
m_monthAxis->setLabelAutoAngle(float(rotation));
m_yearAxis->setLabelAutoAngle(float(rotation));
}
void GraphModifier::setAxisTitleVisibility(bool visible)
{
m_temperatureAxis->setTitleVisible(visible);
m_monthAxis->setTitleVisible(visible);
m_yearAxis->setTitleVisible(visible);
}
void GraphModifier::setAxisTitleFixed(bool enabled)
{
m_temperatureAxis->setTitleFixed(enabled);
m_monthAxis->setTitleFixed(enabled);
m_yearAxis->setTitleFixed(enabled);
}
void GraphModifier::zoomToSelectedBar()
{
m_animationCameraX.stop();
m_animationCameraY.stop();
m_animationCameraZoom.stop();
m_animationCameraTarget.stop();
float currentX = m_graph->cameraXRotation();
float currentY = m_graph->cameraYRotation();
float currentZoom = m_graph->cameraZoomLevel();
QVector3D currentTarget = m_graph->cameraTargetPosition();
m_animationCameraX.setStartValue(QVariant::fromValue(currentX));
m_animationCameraY.setStartValue(QVariant::fromValue(currentY));
m_animationCameraZoom.setStartValue(QVariant::fromValue(currentZoom));
m_animationCameraTarget.setStartValue(QVariant::fromValue(currentTarget));
QPoint selectedBar = m_graph->selectedSeries() ? m_graph->selectedSeries()->selectedBar()
: QBar3DSeries::invalidSelectionPosition();
if (selectedBar != QBar3DSeries::invalidSelectionPosition()) {
// Normalize selected bar position within axis range to determine target coordinates
//! [calculate target]
QVector3D endTarget;
float xMin = m_graph->columnAxis()->min();
float xRange = m_graph->columnAxis()->max() - xMin;
float zMin = m_graph->rowAxis()->min();
float zRange = m_graph->rowAxis()->max() - zMin;
endTarget.setX((selectedBar.y() - xMin) / xRange * 2.0f - 1.0f);
endTarget.setZ((selectedBar.x() - zMin) / zRange * 2.0f - 1.0f);
//! [calculate target]
// Rotate the camera so that it always points approximately to the graph center
//! [center camera]
qreal endAngleX = 90.0 - qRadiansToDegrees(qAtan(qreal(endTarget.z() / endTarget.x())));
if (endTarget.x() > 0.0f)
endAngleX -= 180.0f;
float barValue = m_graph->selectedSeries()
->dataProxy()
->itemAt(selectedBar.x(), selectedBar.y())
.value();
float endAngleY = barValue >= 0.0f ? 30.0f : -30.0f;
if (m_graph->valueAxis()->reversed())
endAngleY *= -1.0f;
//! [center camera]
m_animationCameraX.setEndValue(QVariant::fromValue(float(endAngleX)));
m_animationCameraY.setEndValue(QVariant::fromValue(endAngleY));
m_animationCameraZoom.setEndValue(QVariant::fromValue(100));
//! [set target]
m_animationCameraTarget.setEndValue(QVariant::fromValue(endTarget));
//! [set target]
} else {
// No selected bar, so return to the default view
m_animationCameraX.setEndValue(QVariant::fromValue(m_defaultAngleX));
m_animationCameraY.setEndValue(QVariant::fromValue(m_defaultAngleY));
m_animationCameraZoom.setEndValue(QVariant::fromValue(m_defaultZoom));
m_animationCameraTarget.setEndValue(QVariant::fromValue(m_defaultTarget));
}
m_animationCameraX.start();
m_animationCameraY.start();
m_animationCameraZoom.start();
m_animationCameraTarget.start();
}
void GraphModifier::setDataModeToWeather(bool enabled)
{
if (enabled)
changeDataMode(false);
}
void GraphModifier::setDataModeToModel(bool enabled)
{
if (enabled)
changeDataMode(true);
}
void GraphModifier::changeShadowQuality(int quality)
{
const auto sq = QtGraphs3D::ShadowQuality(quality);
m_graph->setShadowQuality(sq);
emit shadowQualityChanged(quality);
}
//! [rotate camera]
void GraphModifier::rotateX(int angle)
{
m_xRotation = angle;
m_graph->setCameraPosition(m_xRotation, m_yRotation);
}
//! [rotate camera]
void GraphModifier::rotateY(int angle)
{
m_yRotation = angle;
m_graph->setCameraPosition(m_xRotation, m_yRotation);
}
void GraphModifier::setBackgroundVisible(int visible)
{
m_graph->activeTheme()->setPlotAreaBackgroundVisible(bool(visible));
}
void GraphModifier::setGridVisible(int visible)
{
m_graph->activeTheme()->setGridVisible(bool(visible));
}
void GraphModifier::setSmoothBars(int smooth)
{
m_smooth = bool(smooth);
m_primarySeries->setMeshSmooth(m_smooth);
m_secondarySeries->setMeshSmooth(m_smooth);
m_customData->customSeries()->setMeshSmooth(m_smooth);
}
void GraphModifier::setSeriesVisibility(int visible)
{
m_secondarySeries->setVisible(bool(visible));
}
void GraphModifier::setReverseValueAxis(int enabled)
{
m_graph->valueAxis()->setReversed(enabled);
}
void GraphModifier::changeDataMode(bool modelData)
{
int enabled = false;
// Change between weather data and data from model proxy
if (modelData) {
m_graph->removeSeries(m_primarySeries);
m_graph->removeSeries(m_secondarySeries);
m_graph->addSeries(m_customData->customSeries());
if (m_graph->valueAxis()->reversed())
enabled = true;
m_graph->setValueAxis(m_customData->valueAxis());
m_graph->setRowAxis(m_customData->rowAxis());
m_graph->setColumnAxis(m_customData->colAxis());
} else {
m_graph->removeSeries(m_customData->customSeries());
m_graph->addSeries(m_primarySeries);
m_graph->addSeries(m_secondarySeries);
if (m_graph->valueAxis()->reversed())
enabled = true;
m_graph->setValueAxis(m_temperatureAxis);
m_graph->setRowAxis(m_yearAxis);
m_graph->setColumnAxis(m_monthAxis);
}
setReverseValueAxis(enabled);
}
Reference in New Issue View Git Blame Copy Permalink