Qt SCXML Media Player QML Example (Static)▲
Media Player QML Example (Static) demonstrates how to access data from an ECMAScript data model that is compiled into a C++ class.
The UI is created using Qt Quick.
Running the Example▲
To run the example from http://, open the Welcome mode and select the example from Examples. For more information, visit http://.
Using the ECMAScript Data Model▲
We specify the data model as a value of the datamodel attribute of the <scxml> element in mediaplayer-common/mediaplayer.scxml:
<scxml
xmlns="http://www.w3.org/2005/07/scxml"
version="1.0"
name="MediaPlayerStateMachine"
initial="stopped"
datamodel="ecmascript"
>
<datamodel>
<data id="media"/>
</datamodel>Compiling the State Machine▲
We link against the Qt SCXML module by adding the following line to the .pro file:
QT += widgets scxmlWe then specify the state machine to compile:
STATECHARTS = ../mediaplayer-common/mediaplayer.scxmlThe Qt SCXML Compiler, qscxmlc, is run automatically to generate statemachine.h and statemachine.cpp, and to add them to the HEADERS and SOURCES variables for compilation.
Instantiating the State Machine▲
We instantiate the generated MediaPlayerStateMachine class in mediaplayer-qml-static.cpp:
#include "mediaplayer.h"
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
qmlRegisterType<MediaPlayerStateMachine>("MediaPlayerStateMachine", 1, 0, "MediaPlayerStateMachine");
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:///mediaplayer-qml-static.qml")));
if (engine.rootObjects().isEmpty())
return -1;
return app.exec();
}List of Files▲
Files:
List of Files▲
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mediaplayer-qml-static/mediaplayer-qml-static.cpp
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mediaplayer-qml-static/mediaplayer-qml-static.pro
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mediaplayer-qml-static/mediaplayer-qml-static.qml
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mediaplayer-qml-static/mediaplayer-qml-static.qrc