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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Inkscape::Debug::GdkEventLatencyTracker - tracks backlog of GDK events
*
* Authors:
* MenTaLguY <mental@rydia.net>
*
* Copyright (C) 2008 MenTaLguY
*
* Released under GNU GPL v2+, read the file 'COPYING' for more information.
*/
#ifndef SEEN_INKSCAPE_DEBUG_GDK_EVENT_LATENCY_TRACKER_H
#define SEEN_INKSCAPE_DEBUG_GDK_EVENT_LATENCY_TRACKER_H
typedef union _GdkEvent GdkEvent;
#include <glibmm/timer.h>
#include <optional>
namespace Inkscape {
namespace Debug {
class GdkEventLatencyTracker {
public:
GdkEventLatencyTracker();
std::optional<double> process(GdkEvent const *e);
double maxLatency() const { return max_latency; }
double getSkew();
static GdkEventLatencyTracker &default_tracker();
private:
GdkEventLatencyTracker(GdkEventLatencyTracker const &) = delete; // no copy
void operator=(GdkEventLatencyTracker const &) = delete; // no assign
double start_seconds;
double max_latency;
double skew;
double last_elapsed;
double last_seconds;
Glib::Timer elapsed;
};
}
}
#endif
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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