qt6 client makefile using chartview example

6 files changed, 383 insertions, 0 deletions

diff --git a/client/chart.cpp b/client/chart.cpp
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+++ b/client/chart.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "chart.h"
+#include <QtWidgets/QGesture>
+#include <QtWidgets/QGraphicsScene>
+#include <QtWidgets/QGraphicsView>
+
+Chart::Chart(QGraphicsItem *parent, Qt::WindowFlags wFlags)
+    : QChart(QChart::ChartTypeCartesian, parent, wFlags)
+{
+    // Seems that QGraphicsView (QChartView) does not grab gestures.
+    // They can only be grabbed here in the QGraphicsWidget (QChart).
+    grabGesture(Qt::PanGesture);
+    grabGesture(Qt::PinchGesture);
+}
+
+Chart::~Chart()
+{
+
+}
+
+//![1]
+bool Chart::sceneEvent(QEvent *event)
+{
+    if (event->type() == QEvent::Gesture)
+        return gestureEvent(static_cast<QGestureEvent *>(event));
+    return QChart::event(event);
+}
+
+bool Chart::gestureEvent(QGestureEvent *event)
+{
+    if (QGesture *gesture = event->gesture(Qt::PanGesture)) {
+        QPanGesture *pan = static_cast<QPanGesture *>(gesture);
+        QChart::scroll(-(pan->delta().x()), pan->delta().y());
+    }
+
+    if (QGesture *gesture = event->gesture(Qt::PinchGesture)) {
+        QPinchGesture *pinch = static_cast<QPinchGesture *>(gesture);
+        if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged)
+            QChart::zoom(pinch->scaleFactor());
+    }
+
+    return true;
+}
+//![1]
diff --git a/client/chart.h b/client/chart.h
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+++ b/client/chart.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CHART_H
+#define CHART_H
+
+#include <QtCharts/QChart>
+
+QT_BEGIN_NAMESPACE
+class QGestureEvent;
+QT_END_NAMESPACE
+
+QT_CHARTS_USE_NAMESPACE
+
+//![1]
+class Chart : public QChart
+//![1]
+{
+public:
+    explicit Chart(QGraphicsItem *parent = nullptr, Qt::WindowFlags wFlags = {});
+    ~Chart();
+
+protected:
+    bool sceneEvent(QEvent *event);
+
+private:
+    bool gestureEvent(QGestureEvent *event);
+
+private:
+
+};
+
+#endif // CHART_H
diff --git a/client/chartview.cpp b/client/chartview.cpp
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+++ b/client/chartview.cpp
@@ -0,0 +1,109 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "chartview.h"
+#include <QtGui/QMouseEvent>
+
+ChartView::ChartView(QChart *chart, QWidget *parent) :
+    QChartView(chart, parent),
+    m_isTouching(false)
+{
+    setRubberBand(QChartView::RectangleRubberBand);
+}
+
+bool ChartView::viewportEvent(QEvent *event)
+{
+    if (event->type() == QEvent::TouchBegin) {
+        // By default touch events are converted to mouse events. So
+        // after this event we will get a mouse event also but we want
+        // to handle touch events as gestures only. So we need this safeguard
+        // to block mouse events that are actually generated from touch.
+        m_isTouching = true;
+
+        // Turn off animations when handling gestures they
+        // will only slow us down.
+        chart()->setAnimationOptions(QChart::NoAnimation);
+    }
+    return QChartView::viewportEvent(event);
+}
+
+void ChartView::mousePressEvent(QMouseEvent *event)
+{
+    if (m_isTouching)
+        return;
+    QChartView::mousePressEvent(event);
+}
+
+void ChartView::mouseMoveEvent(QMouseEvent *event)
+{
+    if (m_isTouching)
+        return;
+    QChartView::mouseMoveEvent(event);
+}
+
+void ChartView::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (m_isTouching)
+        m_isTouching = false;
+
+    // Because we disabled animations when touch event was detected
+    // we must put them back on.
+    chart()->setAnimationOptions(QChart::SeriesAnimations);
+
+    QChartView::mouseReleaseEvent(event);
+}
+
+//![1]
+void ChartView::keyPressEvent(QKeyEvent *event)
+{
+    switch (event->key()) {
+    case Qt::Key_Plus:
+        chart()->zoomIn();
+        break;
+    case Qt::Key_Minus:
+        chart()->zoomOut();
+        break;
+//![1]
+    case Qt::Key_Left:
+        chart()->scroll(-10, 0);
+        break;
+    case Qt::Key_Right:
+        chart()->scroll(10, 0);
+        break;
+    case Qt::Key_Up:
+        chart()->scroll(0, 10);
+        break;
+    case Qt::Key_Down:
+        chart()->scroll(0, -10);
+        break;
+    default:
+        QGraphicsView::keyPressEvent(event);
+        break;
+    }
+}
diff --git a/client/chartview.h b/client/chartview.h
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index 0000000..502b946
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+++ b/client/chartview.h
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef CHARTVIEW_H
+#define CHARTVIEW_H
+
+#include <QtCharts/QChartView>
+#include <QtWidgets/QRubberBand>
+
+QT_CHARTS_USE_NAMESPACE
+
+//![1]
+class ChartView : public QChartView
+//![1]
+{
+public:
+    ChartView(QChart *chart, QWidget *parent = 0);
+
+//![2]
+protected:
+    bool viewportEvent(QEvent *event);
+    void mousePressEvent(QMouseEvent *event);
+    void mouseMoveEvent(QMouseEvent *event);
+    void mouseReleaseEvent(QMouseEvent *event);
+    void keyPressEvent(QKeyEvent *event);
+//![2]
+
+private:
+    bool m_isTouching;
+};
+
+#endif
diff --git a/client/client.pro b/client/client.pro
new file mode 100644
index 0000000..a9f38f1
--- /dev/null
+++ b/client/client.pro
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+QT += charts
+
+HEADERS += \
+    chart.h \
+    chartview.h
+
+SOURCES += \
+    main.cpp \
+    chart.cpp \
+    chartview.cpp
+
+target.path = $$[QT_INSTALL_EXAMPLES]/charts/zoomlinechart
+INSTALLS += target
diff --git a/client/main.cpp b/client/main.cpp
new file mode 100644
index 0000000..28a3d91
--- /dev/null
+++ b/client/main.cpp
@@ -0,0 +1,72 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the Qt Charts module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 or (at your option) any later version
+** approved by the KDE Free Qt Foundation. The licenses are as published by
+** the Free Software Foundation and appearing in the file LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "chart.h"
+#include "chartview.h"
+#include <QtWidgets/QApplication>
+#include <QtWidgets/QMainWindow>
+#include <QtCore/QtMath>
+#include <QtCore/QRandomGenerator>
+#include <QtCharts/QLineSeries>
+#include <QtCharts/QValueAxis>
+
+QT_CHARTS_USE_NAMESPACE
+
+int main(int argc, char *argv[])
+{
+    QApplication a(argc, argv);
+
+//![1]
+    QLineSeries *series = new QLineSeries();
+    for (int i = 0; i < 500; i++) {
+        QPointF p((qreal) i, qSin(M_PI / 50 * i) * 100);
+        p.ry() += QRandomGenerator::global()->bounded(20);
+        *series << p;
+    }
+//![1]
+
+    Chart *chart = new Chart();
+    chart->addSeries(series);
+    chart->setTitle("Zoom in/out example");
+    chart->setAnimationOptions(QChart::SeriesAnimations);
+    chart->legend()->hide();
+    chart->createDefaultAxes();
+
+    ChartView *chartView = new ChartView(chart);
+    chartView->setRenderHint(QPainter::Antialiasing);
+
+    QMainWindow window;
+    window.setCentralWidget(chartView);
+    window.resize(400, 300);
+    window.grabGesture(Qt::PanGesture);
+    window.grabGesture(Qt::PinchGesture);
+    window.show();
+
+    return a.exec();
+}