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/*!
\page qdeclarativedebugging.html
\title Debugging QML

\section1 Logging

\c console.log can be used to print debugging information to the console. For example:

\qml
Rectangle {
    width: 200; height: 200
    MouseArea {
        anchors.fill: parent
        onClicked: console.log("clicked")
    }
}
\endqml

\section1 Debugging Transitions

When a transition doesn't look quite right, it can be helpful to view it in slow
motion to see what is happening more clearly. \l {qmlviewer} provides a 
"Slow Down Animations" menu option to facilitate this.


\section1 The QML Inspector

The \c qmldebugger tool provides an experimental inspector to aid with debugging.
It can be run as a Qt Creator plugin or as a standalone application.

\section2 Qt Creator plugin

The Qt Creator plugin currently builds against Qt Creator 1.3.

To build the Qt Creator plugin:

\list
\o Set an environment variable \c CREATOR_SRC_DIR that points to the Qt Creator
   source directory
\o Set an environment variable \c CREATOR_BUILD_DIR that points to the Qt Creator
   build directory
\o Run \c qmake on \c $QTDIR/tools/qmldebugger/qmldebugger.pro
\endlist

This builds the plugin into your Qt Creator installation.

The plugin adds a "QML Inspect" mode into Qt Creator that provides:

\list
\o An object tree showing all objects and their children
\o The current property values for the object selected in the object tree
   (this table is dynamically updated for all properties that have property changed
   notifications)
\o An expression evaluator for querying and setting values dynamically
\o A table of watched properties (double-click on a property in the property
   table to add it to the watch table)
\o A graph that shows the frame rate of your application
\endlist


To start the debugger, open a QML project and click the "QML Inspect" mode, then click the green
"play" button in the toolbar of the bottom-right debugger window.

\image qmldebugger-creator.png


\section2 Standalone qmldebugger tool

To run the standalone \c qmldebugger tool, set an environment variable \c QML_DEBUG_SERVER_PORT
to an available port number and run the \c qmlviewer. For example:

\code
    QML_DEBUG_SERVER_PORT=3768 qmlviewer myqmlfile.qml
\endcode

Then in another process, start the \c qmldebugger tool, enter the port number into the corresponding spinbox
in the top right hand corner, and press the "Connect" button.

*/