haiku-beta6/src/servers/app/server/RootLayer.h

//------------------------------------------------------------------------------
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//	File Name:		RootLayer.h
//	Author:			Gabe Yoder <[email protected]>
//					DarkWyrm <[email protected]>
//	Description:	Class used for the top layer of each workspace's Layer tree
//  
//------------------------------------------------------------------------------
#ifndef _ROOTLAYER_H_
#define _ROOTLAYER_H_

#include <List.h>
#include <Locker.h>

#include "Layer.h"
#include "FMWList.h"

class RGBColor;
class Workspace;
class Screen;
class WinBorder;
class Desktop;
class DisplayDriver;

/*!
	\class RootLayer RootLayer.h
	\brief Class used for the top layer of each workspace's Layer tree
	
	RootLayers are used to head up the top of each Layer tree and reimplement certain 
	Layer functions to act accordingly. There is only one for each workspace class.
	
*/
class RootLayer : public Layer
{
public:
								RootLayer(const char *name,
									int32 workspaceCount, Desktop *desktop, DisplayDriver *driver);
	virtual						~RootLayer();

	virtual	void				Draw(const BRect &r);
	virtual	void				MoveBy(float x, float y);
	virtual	void				ResizeBy(float x, float y);

	virtual	Layer*				VirtualTopChild() const;		//
	virtual	Layer*				VirtualLowerSibling() const;	//	... for the active workspace
	virtual	Layer*				VirtualUpperSibling() const;	//
	virtual	Layer*				VirtualBottomChild() const;	//
 
 			void				AddWinBorder(WinBorder* winBorder);
 			void				RemoveWinBorder(WinBorder* winBorder);
 			void				ChangeWorkspacesFor(WinBorder* winBorder, uint32 newWorkspaces);
 			bool				SetFrontWinBorder(WinBorder* winBorder);
 
			void				SetScreens(Screen *screen[], int32 rows, int32 columns);
			Screen**			Screens();
			bool				SetScreenResolution(int32 width, int32 height, uint32 colorspace);
			int32				ScreenRows() const { return fRows; }
			int32				ScreenColumns() const { return fColumns; }
			
			void				SetWorkspaceCount(const int32 count);
			int32				WorkspaceCount(void) const;
			Workspace*			WorkspaceAt(const int32 index) const;
			void				SetActiveWorkspaceByIndex(const int32 index);
			void				SetActiveWorkspace(Workspace *ws);
			int32				ActiveWorkspaceIndex(void) const;
			Workspace*			ActiveWorkspace(void) const;

			void				SetBGColor(const RGBColor &col);
			RGBColor			BGColor(void) const;
			
			void				AddWinBorderToWorkspaces(WinBorder* winBorder,
														 uint32 wks);

// ------- debugging methods -------
			void				PrintToStream();
// "Private" to app_server :-) - they should not be used
			void				RemoveAppWindow(WinBorder *wb);

			FMWList				fMainFMWList;
			BLocker				fMainLock;
private:
			Desktop				*fDesktop;

			BList				fScreenPtrList;
			int32				fRows;
			int32				fColumns;
			int32				fScreenXResolution;
			int32				fScreenYResolution;
			uint32				fColorSpace;
			
			BList				fWSPtrList;
			Workspace			*fActiveWorkspace;
};

#endif