graphwindow.h

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//--- < GRAPHWINDOW.H > ---------| ViewGraph - A Flexible Graph view Framework |
//
// GraphWindow binds together a scene and 
// a list of Cameras to provide graph
// display.
//
// Uses a CameraFocusPolicy policy class
// to define camera focus behaviour (similar 
// to window manager focus behaviour)
//
// Uses an UpdatePolicy class to decide when
// to repaint the window.
//
// $Author: botik32 $
// $Revision: 1.3 $
// $Date: 2004/05/25 13:14:16 $
//-----------------------------------------------------------------------------/

#ifndef GRAPHWINDOW_H
#define GRAPHWINDOW_H

#include <cZUI/event.h>
#include <cZUI/camerafocus.h>
#include <cZUI/basegraphwindow.h>
#include <cZUI/timedeventmanager.h>
#include <cZUI/updatepolicy.h>

template <class CF, class UP, int delay> class GraphWindow : public BaseGraphWindow,
        public CF, public TimedEventManager, public UP
{
private:
        void handle_repaintrect( Event * );
        void handle_invalidaterect( Event * );
protected:
        int lastxpos;
        int lastypos;
        // scene is ready and has to be rendered
        // onto the canvas
        void render_scene( void );
public:
        GraphWindow( Scene * );

        // tries to pass the event to the cameras in z-order,
        // applying shiftview() to the message with the first found
        // camera. Handles focus events by calling CF::focus_cameras() 
        // first. 
        // Note: focus_cameras() automatically assigns the 
        // context camera for the event
        //
        // Note: Focus events come in the guise of mouse events, but
        // the code can send focus events too.
        bool handle_event( Event * );
        bool handle_message( Message * );
        CameraList* get_cameras( void );

        // Now that we added timed events, this function
        // should be called to process them
        void process_internal_events( void );

        // with the changed repaint policy, this function
        // should be called to repaint the window
        bool repaint( void );

        // This function is called by the scenenodes
        void enqueue_timed_event( int, Event * );
};

#endif


/// $Log: graphwindow.h,v $
/// Revision 1.3  2004/05/25 13:14:16  botik32
/// Many bugfixes, including fix for no draw at load.
/// Many fixes for ANSI compatibility (e.g. windows)
///
/// Revision 1.2  2004/05/24 16:23:57  botik32
/// Added missing destructor to GroupNode
///
/// Revision 1.1.1.1  2004/03/26 10:50:22  botik32
/// Initial release
///
/// Revision 1.1.1.1  2004/03/26 08:53:33  botik
/// initial import
///
///
/// Revision 1.6  2004/03/15 19:31:53  botik
/// Changed the structure of UpdatePolicy class so that
/// it can compile under MSVC. (MSVC did not like my
/// nested templates :()
///
/// Revision 1.5  2004/03/15 18:06:25  botik
/// Activeleaf.cpp: removed bug causing problems with memory
/// Context.cpp: added include of assert.h
/// Graphwindow.h, graphwindow.cpp: added update policy class,
///   now a window has its own update policy, which can be
///   always/ fixed rate.
/// Timedeventmanager.cpp: fixed a bug causing memory corruption
///
/// Revision 1.4  2003/12/02 14:39:37  botik
/// Changed the repaint strategy to always repaint the scene
/// Added Context class to handle context-related data for
/// scene nodes
/// Added get_surfacerect() to ScrollableView
/// Camera, Scene and GraphWindow now inherit from Context
/// Changed activeleaf to use Scene context to store hover
/// status
///
/// Revision 1.3  2003/11/20 18:40:48  botik
/// Got borderlayer to work satisfactory.
/// Changed xpsdl driver to check bounds
/// on rect update and clear
///
/// Revision 1.2  2003/11/19 16:14:52  botik
/// Got repaint_rect to work right and changed ActiveLeaf
/// accordingly.
///
/// Revision 1.1  2003/11/17 23:38:45  botik
/// Fixed the framework to work with multiple cameras on
/// one window. There is a clear bug that does not clear
/// the upper camera.
/// Changed scrolling to remove flicker when multiple
/// cameras are present on a window.
/// Scrolling is still slow.
///
/// Revision 1.9  2003/11/04 18:28:06  botik
/// Added external and internal repaint events
///
/// Revision 1.8  2003/10/28 15:43:55  botik
/// More work on event framework and camera composition and
/// z-ordering
///
/// Revision 1.7  2003/10/24 17:50:56  botik
/// Some changes to the graphdisplay concerning events
///
/// Revision 1.6  2003/10/24 16:42:56  botik
/// Modified graphdisplay to keep a list of Z-ordered cameras
/// that match open screen surfaces.
///
/// Revision 1.5  2003/10/24 16:38:12  botik
/// Added an object camera definition
///
/// Revision 1.4  2003/10/24 16:29:10  botik
/// Added more scene support: special scene nodes as well as a
/// camera class that acts as glue between the graph master and the
/// surface.
///
/// Revision 1.3  2003/10/15 11:58:05  botik
/// With the addition of object display, graphdisplay has been
/// modified. ObjectDisplay's interface has been coded. Some
/// changes to scrollable view have been introduced that relate
/// to the changes above.
///
/// Revision 1.2  2003/10/13 16:41:35  botik
/// Added Log keyword to the end of the files
///

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