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/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
//
// VNCServer - abstract interface implemented by the RFB library. The back-end
// code calls the relevant methods as appropriate.
#ifndef __RFB_VNCSERVER_H__
#define __RFB_VNCSERVER_H__
#include <rfb/UpdateTracker.h>
#include <rfb/SSecurity.h>
#include <rfb/ScreenSet.h>
namespace rfb {
class VNCServer : public UpdateTracker {
public:
// blockUpdates()/unblockUpdates() tells the server that the pixel buffer
// is currently in flux and may not be accessed. The attributes of the
// pixel buffer may still be accessed, but not the frame buffer itself.
// Note that access must be unblocked the exact same number of times it
// was blocked.
virtual void blockUpdates() = 0;
virtual void unblockUpdates() = 0;
// setPixelBuffer() tells the server to use the given pixel buffer (and
// optionally a modified screen layout). If this differs in size from
// the previous pixel buffer, this may result in protocol messages being
// sent, or clients being disconnected.
virtual void setPixelBuffer(PixelBuffer* pb, const ScreenSet& layout) = 0;
virtual void setPixelBuffer(PixelBuffer* pb) = 0;
// setScreenLayout() modifies the current screen layout without changing
// the pixelbuffer. Clients will be notified of the new layout.
virtual void setScreenLayout(const ScreenSet& layout) = 0;
// getPixelBuffer() returns a pointer to the PixelBuffer object.
virtual PixelBuffer* getPixelBuffer() const = 0;
// serverCutText() tells the server that the cut text has changed. This
// will normally be sent to all clients.
virtual void serverCutText(const char* str, int len) = 0;
// bell() tells the server that it should make all clients make a bell sound.
virtual void bell() = 0;
// - Close all currently-connected clients, by calling
// their close() method with the supplied reason.
virtual void closeClients(const char* reason) = 0;
// setCursor() tells the server that the cursor has changed. The
// cursorData argument contains width*height pixel values in the pixel
// buffer's format. The mask argument is a bitmask with a 1-bit meaning
// the corresponding pixel in cursorData is valid. The mask consists of
// left-to-right, top-to-bottom scanlines, where each scanline is padded to
// a whole number of bytes [(width+7)/8]. Within each byte the most
// significant bit represents the leftmost pixel, and the bytes are simply
// in left-to-right order. The server takes its own copy of the data in
// cursorData and mask.
virtual void setCursor(int width, int height, const Point& hotspot,
const void* cursorData, const void* mask) = 0;
// setCursorPos() tells the server the current position of the cursor.
virtual void setCursorPos(const Point& p) = 0;
// setName() tells the server what desktop title to supply to clients
virtual void setName(const char* name) = 0;
};
}
#endif
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