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"
#include "CursorHandler.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(void);
	
	virtual	void MoveBy(float x, float y);
	virtual	void ResizeBy(float x, float y);
	
	// For the active workspaces
	virtual	Layer *VirtualTopChild(void) const;
	virtual	Layer *VirtualLowerSibling(void) const;
	virtual	Layer *VirtualUpperSibling(void) const;
	virtual	Layer *VirtualBottomChild(void) const;

	void ReadWorkspaceData(const char *path);
	void SaveWorkspaceData(const char *path);
	
	void AddWinBorder(WinBorder *winBorder);
	void RemoveWinBorder(WinBorder *winBorder);
	WinBorder* WinBorderAt(const BPoint& pt);
	void ChangeWorkspacesFor(WinBorder *winBorder, uint32 newWorkspaces);
	bool SetFrontWinBorder(WinBorder *winBorder);
	
	void SetScreens(Screen *screen[], int32 rows, int32 columns);
	Screen **Screens(void);
	bool SetScreenResolution(int32 width, int32 height, uint32 colorspace);
	int32 ScreenRows(void) const { return fRows; }
	int32 ScreenColumns(void) 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;
	
	virtual bool HasClient(void) { return false; }
	
	void AddWinBorderToWorkspaces(WinBorder *winBorder, uint32 wks);

	// Input related methods
	void MouseEventHandler(int32 code, BPortLink& link);
	void KeyboardEventHandler(int32 code, BPortLink& link);
	
	void SetDragMessage(BMessage *msg);
	BMessage *DragMessage(void) const;

	static int32 WorkingThread(void *data);

	// Debug methods
	void PrintToStream(void);
	
	// "Private" to app_server :-) - they should not be used
	void RemoveAppWindow(WinBorder *wb);
	
	FMWList fMainFMWList;
	BLocker fMainLock;

private:
	Desktop *fDesktop;
	BMessage *fDragMessage;
	WinBorder *fMouseTarget;

	thread_id fThreadID;
	port_id fListenPort;
	
	BList fScreenPtrList;
	int32 fRows;
	int32 fColumns;
	int32 fScreenXResolution;
	int32 fScreenYResolution;
	uint32 fColorSpace;
	
	BList fWorkspaceList;
	Workspace *fActiveWorkspace;

	int32 fScreenShotIndex;
	bool fQuiting;
};

#endif