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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.
*/
// -=- SDisplayCorePolling.h
//
// SDisplayCore implementation that simply polls the screen, in sections,
// in order to detect changes. This Core will signal the SDisplay's
// updateEvent regularly, causing it to call the Core back to propagate
// changes to the VNC Server.
#ifndef __RFB_SDISPLAY_CORE_POLLING_H__
#define __RFB_SDISPLAY_CORE_POLLING_H__
#include <rfb_win32/SDisplay.h>
#include <rfb_win32/IntervalTimer.h>
#include <rfb_win32/WMWindowCopyRect.h>
namespace rfb {
namespace win32 {
class SDisplayCorePolling : public SDisplayCore, protected MsgWindow {
public:
SDisplayCorePolling(SDisplay* display, UpdateTracker* ut, int pollIntervalMs=50);
~SDisplayCorePolling();
// - Called by SDisplay to inform Core of the screen size
void setScreenRect(const Rect& screenRect_) override;
// - Called by SDisplay to flush updates to the specified tracker
void flushUpdates() override;
const char* methodName() const override { return "Polling"; }
protected:
// - MsgWindow overrides
// processMessage is used to service the cursor & polling timers
LRESULT processMessage(UINT msg, WPARAM wParam, LPARAM lParam) override;
// - Hooking subcomponents used to track the desktop state
WMCopyRect copyrect;
// - Background full screen polling fields
IntervalTimer pollTimer;
static const unsigned int pollTimerId;
Rect screenRect;
int pollInterval;
int pollNextY;
int pollIncrementY;
bool pollNextStrip;
// - Handle back to the owning SDisplay, and to the UpdateTracker to flush to
SDisplay* display;
UpdateTracker* updateTracker;
};
};
};
#endif
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