cameramvevent.h

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//--- < CAMERAMVEVENT.H > -------| ViewGraph - A Flexible Graph view Framework |
//
// Defines events that move camera position
// (zoom,scroll). These events cause the optimized
// group nodes to recompute their active node lists.
// 
// Derive your event from CameraMovementEvent to 
// register an event that moves camera position.
//
// $Author: botik32 $
// $Revision: 1.2 $
// $Date: 2004/05/19 16:40:36 $
//-----------------------------------------------------------------------------/

#ifndef CAMERAMVEVENT_H
#define CAMERAMVEVENT_H

#include <cZUI/event.h>

/// CameraMovementEvents cause the camera to change
/// its position and/or zoom. 
class CameraMovementEvent : public Event
{
public:
        CameraMovementEvent( Camera *, const char * );
        static const char *type;
        bool is_type( const char * );
};

/// Tells the camera to scroll.
class CameraScrollEvent : public CameraMovementEvent 
{
public:
        static const char *type;
        double xmov, ymov;
        CameraScrollEvent( Camera *, double, double );
};

/// Tells the camera to zoom.
class CameraZoomEvent : public CameraMovementEvent 
{
public:
        static const char *type;
        double zoomlevel;
        CameraZoomEvent( Camera *, double abszoom );
};

/// Tells the camera to center.
class CameraCenterEvent : public CameraMovementEvent 
{
public:
        static const char *type;
        double xpos, ypos;
        CameraCenterEvent( Camera *, double, double );
};

/// Changes camera position and zoom.
class CameraSetEvent : public CameraMovementEvent 
{
public:
        static const char *type;
        double xp1, yp1, xp2, yp2;
        CameraSetEvent( Camera *, double, double,
                double, double );
};

#endif

/// $Log: cameramvevent.h,v $
/// Revision 1.2  2004/05/19 16:40:36  botik32
/// Bugfixes and enhancements:
/// Added repaint_due() and brepaint_due to ScrollableView
/// Fixed repaint decisions in GraphWindow to work for multiple-window
/// scenes
/// Fixed ScrollableView to call surfacedriver->clear() in constructor
/// Changed mapchooser to use a smaller resolution world map
///
/// Revision 1.1.1.1  2004/03/26 10:50:21  botik32
/// Initial release
///
/// Revision 1.1.1.1  2004/03/26 08:53:33  botik
/// initial import
///
///
/// Revision 1.5  2004/03/17 13:16:19  botik
/// Fixed the HUDGroup to treat CameraCenter events properly
///
/// Revision 1.4  2003/11/25 13:01:03  botik
/// Changed the flawed way scene node's requests were
/// handled in ZoomableSurfaceView. This fixes a bad bug
/// with HUD nodes moving all over the place.
/// Added CameraZoomedMessage and CameraScrolledMessage
/// Replaced the TranslateNodeMEssage with
/// CameraScrolledMessage in HUDGroupNode. This fixed
/// a HUD flicker bug.
/// Simplified repaint and clear handling in GraphWindow.
/// This fixed a few bugs in repainting.
/// Added rect bounds checking in ScrollableView's
/// clear_rect and repaint_rect. This fixed cameras to only
/// clear their rectangle even if the view holds a larger
/// area.
/// Changed ActiveLeaf to use default paint function if
/// the payload of CameraRepaintLeafMessage is empty. This
/// will allow repaints of moved nodes.
/// Changed LayerNode to allow CameraMovement events even
/// if the layer is inactive. This will update existing HUD
/// controls' position on inactive layers so they do not move
/// astray during scrolls.
/// This is an intermediate change; mouseover checks do not work.
///
/// Revision 1.3  2003/11/24 20:45:29  botik
/// Merged four features from surfacecamera into camera.
/// Modified ScrollableView to hold a width/height of
/// the viewport and to report it to whoever asks.
/// Added scenex, sceney fields to Event.
/// Added coordinate transform for all messages, done
/// at camera level. This should speed up drawability
/// and mouseover checks.
///
/// Repaint and mouse detection work now over arbitrary
/// magnification.
/// Borderlayer is broken and scrolling segfaults in
/// a weird way.
///
/// Revision 1.2  2003/11/12 00:47:31  botik
/// Further work on getting repaints to work, tested with
/// scrolling
///
/// Revision 1.1  2003/11/06 13:51:05  botik
/// Added camera move events that cause the camera to
/// move its position (zoom and scroll events)
///

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