mirror of
https://github.com/kasmtech/KasmVNC.git
synced 2024-11-22 08:04:04 +01:00
110 lines
3.3 KiB
C++
110 lines
3.3 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.
|
|
*/
|
|
|
|
#ifndef __RFB_UPDATETRACKER_INCLUDED__
|
|
#define __RFB_UPDATETRACKER_INCLUDED__
|
|
|
|
#include <rfb/Rect.h>
|
|
#include <rfb/Region.h>
|
|
#include <rfb/PixelBuffer.h>
|
|
#include <vector>
|
|
|
|
namespace rfb {
|
|
|
|
struct CopyPassRect {
|
|
Rect rect;
|
|
unsigned src_x, src_y;
|
|
};
|
|
|
|
class UpdateInfo {
|
|
public:
|
|
Region changed;
|
|
Region copied;
|
|
Point copy_delta;
|
|
std::vector<CopyPassRect> copypassed;
|
|
bool is_empty() const {
|
|
return copied.is_empty() && changed.is_empty() && copypassed.empty();
|
|
}
|
|
// NOTE: We do not ever use UpdateInfo::numRects(), because Tight encoding
|
|
// complicates computing the number of rectangles.
|
|
/*
|
|
int numRects() const {
|
|
return copied.numRects() + changed.numRects();
|
|
}
|
|
*/
|
|
};
|
|
|
|
class UpdateTracker {
|
|
public:
|
|
UpdateTracker() {};
|
|
virtual ~UpdateTracker() {};
|
|
|
|
virtual void add_changed(const Region ®ion) = 0;
|
|
virtual void add_copied(const Region &dest, const Point &delta) = 0;
|
|
};
|
|
|
|
class ClippingUpdateTracker : public UpdateTracker {
|
|
public:
|
|
ClippingUpdateTracker() : ut(0) {}
|
|
ClippingUpdateTracker(UpdateTracker* ut_, const Rect& r=Rect()) : ut(ut_), clipRect(r) {}
|
|
|
|
void setUpdateTracker(UpdateTracker* ut_) {ut = ut_;}
|
|
void setClipRect(const Rect& cr) {clipRect = cr;}
|
|
|
|
virtual void add_changed(const Region ®ion);
|
|
virtual void add_copied(const Region &dest, const Point &delta);
|
|
protected:
|
|
UpdateTracker* ut;
|
|
Rect clipRect;
|
|
};
|
|
|
|
class SimpleUpdateTracker : public UpdateTracker {
|
|
public:
|
|
SimpleUpdateTracker(bool use_copyrect=true);
|
|
virtual ~SimpleUpdateTracker();
|
|
|
|
virtual void enable_copyrect(bool enable);
|
|
|
|
virtual void add_changed(const Region ®ion);
|
|
virtual void add_copied(const Region &dest, const Point &delta);
|
|
virtual void subtract(const Region& region);
|
|
|
|
// Fill the supplied UpdateInfo structure with update information
|
|
// FIXME: Provide getUpdateInfo() with no clipping, for better efficiency.
|
|
virtual void getUpdateInfo(UpdateInfo* info, const Region& cliprgn);
|
|
|
|
// Copy the contained updates to another tracker
|
|
virtual void copyTo(UpdateTracker* to) const;
|
|
|
|
// Move the entire update region by an offset
|
|
void translate(const Point& p) {changed.translate(p); copied.translate(p);}
|
|
|
|
virtual bool is_empty() const {return changed.is_empty() && copied.is_empty();}
|
|
|
|
virtual void clear() {changed.clear(); copied.clear();};
|
|
protected:
|
|
Region changed;
|
|
Region copied;
|
|
Point copy_delta;
|
|
bool copy_enabled;
|
|
};
|
|
|
|
}
|
|
|
|
#endif // __RFB_UPDATETRACKER_INCLUDED__
|