sceneevent.h

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//--- < SCENEEVENT.H > ---------| ViewGraph - A Flexible Graph view Framework |
//
// Defines events that change the scene (node 
// insertion/removal, movement), causing upwards
// nodes to recompute their boundrects.
// 
// Derive your event from SceneEvent to register an 
// event that changes the scene.
//
// $Author: botik32 $
// $Revision: 1.2 $
// $Date: 2004/05/03 21:02:01 $
//-----------------------------------------------------------------------------/

#ifndef SCENEEVENT_H
#define SCENEEVENT_H

#include <cZUI/event.h>

class BaseSceneNode;
class LayerNode;

/// Defines events that change the scene (node 
/// insertion/removal, movement), causing upwards
/// nodes to recompute their boundrects.
class SceneChangedEvent : public Event{
protected:
        BaseSceneNode *origin;
public:
        SceneChangedEvent( Camera *, const char *, BaseSceneNode *origin );
        static const char *type;
        bool is_type( const char * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class LayerAddedEvent : public SceneChangedEvent{
public:
        static const char *type;
        LayerAddedEvent( Camera *, LayerNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class LayerEnabledEvent : public SceneChangedEvent{
public:
        static const char *type;
        LayerEnabledEvent( Camera *, LayerNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class LayerDisabledEvent : public SceneChangedEvent{
public:
        static const char *type;
        LayerDisabledEvent( Camera *, LayerNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class NodeAddedEvent : public SceneChangedEvent{
public:
        static const char *type;
        NodeAddedEvent( Camera *, BaseSceneNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class NodeRemovedEvent : public SceneChangedEvent{
public:
        static const char *type;
        NodeRemovedEvent( Camera *, BaseSceneNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class NodeMovedEvent : public SceneChangedEvent{
public:
        static const char *type;
        NodeMovedEvent( Camera *, BaseSceneNode * );
};

/// Changes the scene, causing upward nodes to 
/// recompute their boundrects. Usually sent to 
/// the context, which will pass it down to all.
/// <br>GroupNode and LayerNode objects handle 
/// this event automatically.
class NodeResizedEvent : public SceneChangedEvent{
public:
        static const char *type;
        NodeResizedEvent( Camera *, BaseSceneNode * );
};

#endif

/// $Log: sceneevent.h,v $
/// Revision 1.2  2004/05/03 21:02:01  botik32
/// Significant changes and many bugfixes.
/// ScrollableView now has a background color used to
/// tell SurfaceDriver to clear with.
/// SurfaceDriver's clear() requires a color now
/// Added SceneEvents for all node additions/removals
/// in GroupNode and Camera.
/// Added paint_selected and paint_selected_invalid
/// to ActiveLeaf
/// Modified ActiveLeaf's mouse_down and mouse_up
/// handler signatures to accept an Event* instead of
/// Camera*
/// - Many more bugfixes
///
/// Revision 1.1  2004/04/30 11:55:12  botik32
/// Added SceneChangedEvent class
///

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