mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-12-26 16:48:55 +01:00
124 lines
4.5 KiB
C++
124 lines
4.5 KiB
C++
/* 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.
|
|
*/
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// SDesktop is an interface implemented by back-ends, on which callbacks are
|
|
// made by the VNCServer as appropriate for pointer and keyboard events, etc.
|
|
// SDesktop objects are always created before the VNCServer - the SDesktop
|
|
// will be passed a pointer to the VNCServer in the start() call. If a more
|
|
// implementation-specific pointer to the VNCServer is required then this
|
|
// can be provided to the SDesktop via an implementation-specific method.
|
|
//
|
|
// An SDesktop usually has an associated PixelBuffer which it tells the
|
|
// VNCServer via the VNCServer's setPixelBuffer() method. It can do this at
|
|
// any time, but the PixelBuffer MUST be valid by the time the call to start()
|
|
// returns. The PixelBuffer may be set to null again if desired when stop() is
|
|
// called. Note that start() and stop() are guaranteed to be called
|
|
// alternately; there should never be two calls to start() without an
|
|
// intervening stop() and vice-versa.
|
|
//
|
|
|
|
#ifndef __RFB_SDESKTOP_H__
|
|
#define __RFB_SDESKTOP_H__
|
|
|
|
#include <rfb/PixelBuffer.h>
|
|
#include <rfb/VNCServer.h>
|
|
#include <rfb/InputHandler.h>
|
|
#include <rfb/Exception.h>
|
|
#include <rfb/screenTypes.h>
|
|
#include <rfb/util.h>
|
|
|
|
namespace rfb {
|
|
|
|
class VNCServer;
|
|
|
|
class SDesktop : public InputHandler {
|
|
public:
|
|
// start() is called by the server when the first client authenticates
|
|
// successfully, and can be used to begin any expensive tasks which are not
|
|
// needed when there are no clients. A valid PixelBuffer must have been
|
|
// set via the VNCServer's setPixelBuffer() method by the time this call
|
|
// returns.
|
|
|
|
virtual void start(VNCServer* __unused_attr vs) {}
|
|
|
|
// stop() is called by the server when there are no longer any
|
|
// authenticated clients, and therefore the desktop can cease any
|
|
// expensive tasks. No further calls to the VNCServer passed to start()
|
|
// can be made once stop has returned.
|
|
|
|
virtual void stop() {}
|
|
|
|
// setScreenLayout() requests to reconfigure the framebuffer and/or
|
|
// the layout of screens.
|
|
virtual unsigned int setScreenLayout(int __unused_attr fb_width,
|
|
int __unused_attr fb_height,
|
|
const ScreenSet& __unused_attr layout) {
|
|
return resultProhibited;
|
|
}
|
|
|
|
// InputHandler interface
|
|
// pointerEvent(), keyEvent() and clientCutText() are called in response to
|
|
// the relevant RFB protocol messages from clients.
|
|
// See InputHandler for method signatures.
|
|
protected:
|
|
virtual ~SDesktop() {}
|
|
};
|
|
|
|
// -=- SStaticDesktop
|
|
// Trivial implementation of the SDesktop interface, which provides
|
|
// dummy input handlers and event processing routine, and exports
|
|
// a plain black desktop of the specified format.
|
|
class SStaticDesktop : public SDesktop {
|
|
public:
|
|
SStaticDesktop(const Point& size) : server(0), buffer(0) {
|
|
PixelFormat pf;
|
|
const rdr::U8 black[4] = { 0, 0, 0, 0 };
|
|
buffer = new ManagedPixelBuffer(pf, size.x, size.y);
|
|
if (buffer)
|
|
buffer->fillRect(buffer->getRect(), black);
|
|
}
|
|
SStaticDesktop(const Point& size, const PixelFormat& pf) : buffer(0) {
|
|
const rdr::U8 black[4] = { 0, 0, 0, 0 };
|
|
buffer = new ManagedPixelBuffer(pf, size.x, size.y);
|
|
if (buffer)
|
|
buffer->fillRect(buffer->getRect(), black);
|
|
}
|
|
virtual ~SStaticDesktop() {
|
|
if (buffer) delete buffer;
|
|
}
|
|
|
|
virtual void start(VNCServer* vs) {
|
|
server = vs;
|
|
server->setPixelBuffer(buffer);
|
|
}
|
|
virtual void stop() {
|
|
server->setPixelBuffer(0);
|
|
server = 0;
|
|
}
|
|
|
|
protected:
|
|
VNCServer* server;
|
|
ManagedPixelBuffer* buffer;
|
|
};
|
|
|
|
};
|
|
|
|
#endif // __RFB_SDESKTOP_H__
|