qtdeclarative/examples/qml/tutorials/extending-qml/chapter3-bindings/piechart.h

49 lines
841 B
C
Raw Normal View History

// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef PIECHART_H
#define PIECHART_H
#include <QColor>
Say hello to QtQuick module This change moves the QtQuick 2 types and C++ API (including SceneGraph) to a new module (AKA library), QtQuick. 99% of this change is moving files from src/declarative to src/quick, and from tests/auto/declarative to tests/auto/qtquick2. The loading of QtQuick 2 ("import QtQuick 2.0") is now delegated to a plugin, src/imports/qtquick2, just like it's done for QtQuick 1. All tools, examples, and tests that use QtQuick C++ API have gotten "QT += quick" or "QT += quick-private" added to their .pro file. A few additional internal QtDeclarative classes had to be exported (via Q_DECLARATIVE_PRIVATE_EXPORT) since they're needed by the QtQuick 2 implementation. The old header locations (e.g. QtDeclarative/qquickitem.h) will still be supported for some time, but will produce compile-time warnings. (To avoid the QtQuick implementation using the compatibility headers (since QtDeclarative's includepath comes first), a few include statements were modified, e.g. from "#include <qsgnode.h>" to "#include <QtQuick/qsgnode.h>".) There's a change in qtbase that automatically adds QtQuick to the module list if QtDeclarative is used. Together with the compatibility headers, this should help reduce the migration pain for existing projects. In theory, simply getting an existing QtDeclarative-based project to compile and link shouldn't require any changes for now -- but porting to the new scheme is of course recommended, and will eventually become mandatory. Task-number: QTBUG-22889 Reviewed-by: Lars Knoll <lars.knoll@nokia.com> Change-Id: Ia52be9373172ba2f37e7623231ecb060316c96a7 Reviewed-by: Kent Hansen <kent.hansen@nokia.com> Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>
2011-11-23 14:14:07 +00:00
#include <QtQuick/QQuickPaintedItem>
//![0]
class PieChart : public QQuickPaintedItem
{
//![0]
Q_OBJECT
Q_PROPERTY(QString name READ name WRITE setName FINAL)
QML_ELEMENT
//![1]
Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged FINAL)
public:
//![1]
PieChart(QQuickItem *parent = nullptr);
QString name() const;
void setName(const QString &name);
QColor color() const;
void setColor(const QColor &color);
void paint(QPainter *painter) override;
Q_INVOKABLE void clearChart();
//![2]
signals:
void colorChanged();
//![2]
private:
QString m_name;
QColor m_color;
//![3]
};
//![3]
#endif