Accessing Material colors in QML C++ extension

ruisebastiao

I have the following code in a C++ extension :


class User : public QQuickItem
{
    Q_OBJECT
    Q_DISABLE_COPY(User)


    Q_PROPERTY(QString userName READ userName WRITE setUserName NOTIFY userNameChanged)
    Q_PROPERTY(int temperature READ temperature WRITE setTemperature NOTIFY temperatureChanged)
    Q_PROPERTY(QColor primaryColor READ primaryColor WRITE setPrimaryColor NOTIFY primaryColorChanged)

    QString m_name;
    QString m_userName;

    int m_temperature;

    QColor m_primaryColor= Material.color(Material.Indigo);

How can i acess to the Material functions / Color enumerations?

Thanks,

Rui Sebastiao

jeremy_k

The enum is defined in a private header (qquickmaterialstyle_p.h) that isn't shipped with The Qt Company's binary packages. Without modifying a build, grabbing the enum at compile time purely from C++ doesn't appear to be possible.

Some options are to parse the output of 'qmlplugindump -nonrelocatable QtQuick.Controls.Material 2.0', or use a piece of QML to store the enum values in properties of a QML object for retrieval in C++.

jpnurmi

Assuming that User is registered as a QML type, the natural way would be to pass the color from QML:

User {
    primaryColor: Material.color(Material.Indigo)
}

This is essentially what the Material style itself does.