MScene Class Reference

MScene is the scene graph of MeeGo Touch UI applications. More...

Inheritance diagram for MScene:

Collaboration diagram for MScene:

List of all members.

Public Member Functions
	MScene (QObject *parent=0)
virtual	~MScene ()
MSceneManager *	sceneManager ()

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Detailed Description

MScene is the scene graph of MeeGo Touch UI applications.

The scene of an application is a virtual infinite surface on which primitive items or full featured widgets can be placed. For general information of how the scene functions, please refer to the QGraphicsScene documentation.

MScene inherits from and extends QGraphicsScene with the following features:

• Automatic scene management. MSceneWindow derived classes such as MApplicationPage or MDialog become managed by a MSceneManager instance when they appear in a MSceene. The feature is comparable to how native windows are managed by a window manager in desktop environments.
• Emulation of multitouch events for single-touch enviroments, as in a development environment.
• Calcuation of the widget on-display property, see MWidget::isOnDisplay()
• Development mode visual overlays, providing information to help debug applications:
  • Bounding rectangles, toggled by <Ctrl>-<Shift>-B
  • Margins, toggled by <Ctrl>-<Shift>-M
  • Positions, toggled by <Ctrl>-<Shift>-P
  • Sizes, toggled by <Ctrl>-<Shift>-S
  • Object names, toggled by <Ctrl>-<Shift>-N
  • Frames per second, toggled by <Ctrl>-<Shift>-F
  • Take screenshot, triggered by <Ctrl>-<Shift>-T

See also:

MWindow, MApplicationWindow

Definition at line 58 of file corelib/scene/mscene.h.

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Constructor & Destructor Documentation

MScene::MScene

(

QObject *

parent = 0

)

[explicit]

Constructs a MScene.

Definition at line 429 of file mscene.cpp.

    : QGraphicsScene(parent),
      d_ptr(new MScenePrivate)
{
    Q_D(MScene);

    d->q_ptr = this;
    d->manager = 0;
    QColor fpsBackgroundColor(FpsBackgroundColor);
    fpsBackgroundColor.setAlphaF(FpsBackgroundOpacity);
    d->fpsBackgroundBrush = QBrush(fpsBackgroundColor);

    QColor boundingRectLineColor(BoundingRectLineColor);
    d->boundingRectLinePen = QPen(boundingRectLineColor);

    QColor boundingRectFillColor(BoundingRectFillColor);
    d->boundingRectFillBrush = QBrush(boundingRectFillColor);

    setItemIndexMethod(QGraphicsScene::NoIndex);
}

Here is the call graph for this function:

MScene::~MScene

(

)

[virtual]

Destroys the MScene.

Definition at line 450 of file mscene.cpp.

{
    delete d_ptr;
}

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Member Function Documentation

MSceneManager * MScene::sceneManager

(

)

Returns the scene manager of the scene.

Note that the scene manager is not owned by the scene, instead it's the scene that is owned by the scene manager.

If no manager has been assigned, 0 is returned.

Definition at line 455 of file mscene.cpp.

{
    Q_D(MScene);

    return d->manager;
}