139 lines
4.1 KiB
C++
139 lines
4.1 KiB
C++
// Copyright (C) 2001 Constantin Kaplinsky. All Rights Reserved.
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// Copyright (C) 2000 Tridia Corporation. All Rights Reserved.
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// Copyright (C) 1999 AT&T Laboratories Cambridge. All Rights Reserved.
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//
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// This file is part of the VNC system.
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//
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// The VNC system is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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// USA.
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//
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// TightVNC distribution homepage on the Web: http://www.tightvnc.com/
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//
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// If the source code for the VNC system is not available from the place
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// whence you received this file, check http://www.uk.research.att.com/vnc or contact
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// the authors on vnc@uk.research.att.com for information on obtaining it.
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// vncBuffer object
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// The vncBuffer object provides a client-local copy of the screen
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// It can tell the client which bits have changed in a given region
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// It uses the specified vncDesktop to read screen data from
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class vncBuffer;
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#if !defined(_WINVNC_VNCBUFFER)
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#define _WINVNC_VNCBUFFER
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#pragma once
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// Includes
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#include "vncDesktop.h"
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#include "vncEncoder.h"
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#include "vncRegion.h"
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#include "RectList.h"
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// Class definition
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class vncBuffer
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{
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// Methods
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public:
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// Create/Destroy methods
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vncBuffer(vncDesktop *desktop);
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~vncBuffer();
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// BUFFER INFO
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RECT GetSize();
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rfbPixelFormat GetLocalFormat();
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BYTE *GetClientBuffer();
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BOOL GetRemotePalette(RGBQUAD *quadbuff, UINT ncolours);
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// BUFFER MANIPULATION
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BOOL CheckBuffer();
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// SCREEN SCANNING
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UINT GetNumCodedRects(RECT &rect);
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// SCREEN CAPTURE
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RECT GrabMouse();
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BOOL SetClientFormat(rfbPixelFormat &format);
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// CONFIGURING ENCODER
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void SetCompressLevel(int level);
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void SetQualityLevel(int level);
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void EnableXCursor(BOOL enable);
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void EnableRichCursor(BOOL enable);
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void EnableLastRect(BOOL enable);
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BOOL IsLastRectEnabled() { return m_use_lastrect; }
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//VOID UpdateZLibDictionary( AGENT_CTX * lpAgentContext );
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//VOID DumpZLibDictionary( AGENT_CTX * lpAgentContext );
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// ENCODING
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BOOL SetEncoding(CARD32 encoding);
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// semantics changed: offset now is the shared area origin
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// in screen coordinates
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UINT TranslateRect(const RECT &rect, VSocket *outConn, int shared_org_x, int shared_org_y);
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// SENDING CURSOR SHAPE UPDATES
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BOOL IsCursorUpdatePending();
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BOOL SendCursorShape(VSocket *outConn);
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BOOL SendEmptyCursorShape(VSocket *outConn);
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void UpdateLocalFormat();
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// Implementation
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protected:
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// Routine to verify the mainbuff handle hasn't changed
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//inline BOOL FastCheckMainbuffer();
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BYTE *m_mainbuff;
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RECT m_mainrect;
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UINT m_mainsize;
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BYTE *m_clientbuff;
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UINT m_clientbuffsize;
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BOOL m_clientfmtset;
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UINT m_bytesPerRow;
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rfbServerInitMsg m_scrinfo;
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rfbPixelFormat m_clientformat;
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rfbTranslateFnType m_transfunc;
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vncDesktop *m_desktop;
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vncEncoder *m_encoder;
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bool zlib_encoder_in_use;
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vncEncoder *m_hold_zlib_encoder;
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bool tight_encoder_in_use;
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vncEncoder *m_hold_tight_encoder;
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bool zlibhex_encoder_in_use;
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vncEncoder *m_hold_zlibhex_encoder;
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// These variables mirror similar variables from vncEncoder class.
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// They are necessary because vncEncoder instance may be created after
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// their values were set.
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int m_compresslevel;
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int m_qualitylevel;
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BOOL m_use_xcursor;
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BOOL m_use_richcursor;
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BOOL m_use_lastrect;
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HCURSOR m_hcursor; // Used to track cursor shape changes
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};
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#endif // _WINVNC_VNCBUFFER
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