1 files changed, 113 insertions, 0 deletions
diff --git a/examples/charts/chartsgallery/calloutview.cpp b/examples/charts/chartsgallery/calloutview.cpp
new file mode 100644
index 00000000..3ea4ef39
--- /dev/null
+++ b/examples/charts/chartsgallery/calloutview.cpp
@@ -0,0 +1,113 @@
+// Copyright (C) 2023 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include "callout.h"
+#include "calloutview.h"
+
+#include <QChart>
+#include <QGraphicsLayout>
+#include <QGraphicsScene>
+#include <QGraphicsTextItem>
+#include <QGraphicsView>
+#include <QLineSeries>
+#include <QMouseEvent>
+#include <QSplineSeries>
+#include <QResizeEvent>
+
+CalloutView::CalloutView(QWidget *parent)
+    : QGraphicsView(new QGraphicsScene, parent)
+{
+    setDragMode(QGraphicsView::NoDrag);
+    setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
+    setFrameShape(QFrame::NoFrame);
+    setBackgroundRole(QPalette::Window);
+    setRenderHint(QPainter::Antialiasing);
+    setMouseTracking(true);
+
+    m_chart = new QChart;
+    m_chart->setTitle("Hover the line to show callout. Click the line to make it stay.");
+    m_chart->legend()->hide();
+
+    auto series = new QLineSeries;
+    series->append(1, 3);
+    series->append(4, 5);
+    series->append(5, 4.5);
+    series->append(7, 1);
+    series->append(11, 2);
+    m_chart->addSeries(series);
+
+    auto series2 = new QSplineSeries;
+    series2->append(1.6, 1.4);
+    series2->append(2.4, 3.5);
+    series2->append(3.7, 2.5);
+    series2->append(7, 4);
+    series2->append(10, 2);
+    m_chart->addSeries(series2);
+
+    m_chart->createDefaultAxes();
+    m_chart->setAcceptHoverEvents(true);
+
+    scene()->addItem(m_chart);
+
+    m_coordX = new QGraphicsSimpleTextItem(m_chart);
+    m_coordX->setText("X: ");
+    m_coordY = new QGraphicsSimpleTextItem(m_chart);
+    m_coordY->setText("Y: ");
+
+    connect(series, &QLineSeries::clicked, this, &CalloutView::keepCallout);
+    connect(series, &QLineSeries::hovered, this, &CalloutView::tooltip);
+
+    connect(series2, &QSplineSeries::clicked, this, &CalloutView::keepCallout);
+    connect(series2, &QSplineSeries::hovered, this, &CalloutView::tooltip);
+}
+
+CalloutView::~CalloutView()
+{
+    delete scene();
+}
+
+void CalloutView::resizeEvent(QResizeEvent *event)
+{
+    if (scene()) {
+        scene()->setSceneRect(QRect(QPoint(0, 0), event->size()));
+        m_chart->resize(event->size());
+        m_coordX->setPos(m_chart->size().width() / 2 - 70, m_chart->size().height() - 24);
+        m_coordY->setPos(m_chart->size().width() / 2 + 30, m_chart->size().height() - 24);
+        const auto callouts = m_callouts;
+        for (Callout *callout : callouts)
+            callout->updateGeometry();
+    }
+
+    resize(size());
+}
+
+void CalloutView::mouseMoveEvent(QMouseEvent *event)
+{
+    m_coordX->setText(QString("X: %1").arg(m_chart->mapToValue(event->pos()).x()));
+    m_coordY->setText(QString("Y: %1").arg(m_chart->mapToValue(event->pos()).y()));
+
+    QGraphicsView::mouseMoveEvent(event);
+}
+
+void CalloutView::keepCallout()
+{
+    m_callouts.append(m_tooltip);
+    m_tooltip = new Callout(m_chart);
+}
+
+void CalloutView::tooltip(QPointF point, bool state)
+{
+    if (!m_tooltip)
+        m_tooltip = new Callout(m_chart);
+
+    if (state) {
+        m_tooltip->setText(QString("X: %1 \nY: %2 ").arg(point.x()).arg(point.y()));
+        m_tooltip->setAnchor(point);
+        m_tooltip->setZValue(11);
+        m_tooltip->updateGeometry();
+        m_tooltip->show();
+    } else {
+        m_tooltip->hide();
+    }
+}