libgtkd-3-dev 3.7.5-2build1 / usr / include / d / gtkd-3 / gdk / FrameTimings.d

/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */

// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage


module gdk.FrameTimings;

private import gdk.c.functions;
public  import gdk.c.types;
private import gobject.ObjectG;
public  import gtkc.gdktypes;
private import gtkd.Loader;


/**
 * A #GdkFrameTimings object holds timing information for a single frame
 * of the application’s displays. To retrieve #GdkFrameTimings objects,
 * use gdk_frame_clock_get_timings() or gdk_frame_clock_get_current_timings().
 * The information in #GdkFrameTimings is useful for precise synchronization
 * of video with the event or audio streams, and for measuring
 * quality metrics for the application’s display, such as latency and jitter.
 */
public class FrameTimings
{
	/** the main Gtk struct */
	protected GdkFrameTimings* gdkFrameTimings;
	protected bool ownedRef;

	/** Get the main Gtk struct */
	public GdkFrameTimings* getFrameTimingsStruct(bool transferOwnership = false)
	{
		if (transferOwnership)
			ownedRef = false;
		return gdkFrameTimings;
	}

	/** the main Gtk struct as a void* */
	protected void* getStruct()
	{
		return cast(void*)gdkFrameTimings;
	}

	/**
	 * Sets our main struct and passes it to the parent class.
	 */
	public this (GdkFrameTimings* gdkFrameTimings, bool ownedRef = false)
	{
		this.gdkFrameTimings = gdkFrameTimings;
		this.ownedRef = ownedRef;
	}

	~this ()
	{
		if ( Linker.isLoaded(LIBRARY_GDK) && ownedRef )
			gdk_frame_timings_unref(gdkFrameTimings);
	}


	/** */
	public static GType getType()
	{
		return gdk_frame_timings_get_type();
	}

	/**
	 * The timing information in a #GdkFrameTimings is filled in
	 * incrementally as the frame as drawn and passed off to the
	 * window system for processing and display to the user. The
	 * accessor functions for #GdkFrameTimings can return 0 to
	 * indicate an unavailable value for two reasons: either because
	 * the information is not yet available, or because it isn't
	 * available at all. Once gdk_frame_timings_get_complete() returns
	 * %TRUE for a frame, you can be certain that no further values
	 * will become available and be stored in the #GdkFrameTimings.
	 *
	 * Returns: %TRUE if all information that will be available
	 *     for the frame has been filled in.
	 *
	 * Since: 3.8
	 */
	public bool getComplete()
	{
		return gdk_frame_timings_get_complete(gdkFrameTimings) != 0;
	}

	/**
	 * Gets the frame counter value of the #GdkFrameClock when this
	 * this frame was drawn.
	 *
	 * Returns: the frame counter value for this frame
	 *
	 * Since: 3.8
	 */
	public long getFrameCounter()
	{
		return gdk_frame_timings_get_frame_counter(gdkFrameTimings);
	}

	/**
	 * Returns the frame time for the frame. This is the time value
	 * that is typically used to time animations for the frame. See
	 * gdk_frame_clock_get_frame_time().
	 *
	 * Returns: the frame time for the frame, in the timescale
	 *     of g_get_monotonic_time()
	 */
	public long getFrameTime()
	{
		return gdk_frame_timings_get_frame_time(gdkFrameTimings);
	}

	/**
	 * Gets the predicted time at which this frame will be displayed. Although
	 * no predicted time may be available, if one is available, it will
	 * be available while the frame is being generated, in contrast to
	 * gdk_frame_timings_get_presentation_time(), which is only available
	 * after the frame has been presented. In general, if you are simply
	 * animating, you should use gdk_frame_clock_get_frame_time() rather
	 * than this function, but this function is useful for applications
	 * that want exact control over latency. For example, a movie player
	 * may want this information for Audio/Video synchronization.
	 *
	 * Returns: The predicted time at which the frame will be presented,
	 *     in the timescale of g_get_monotonic_time(), or 0 if no predicted
	 *     presentation time is available.
	 *
	 * Since: 3.8
	 */
	public long getPredictedPresentationTime()
	{
		return gdk_frame_timings_get_predicted_presentation_time(gdkFrameTimings);
	}

	/**
	 * Reurns the presentation time. This is the time at which the frame
	 * became visible to the user.
	 *
	 * Returns: the time the frame was displayed to the user, in the
	 *     timescale of g_get_monotonic_time(), or 0 if no presentation
	 *     time is available. See gdk_frame_timings_get_complete()
	 *
	 * Since: 3.8
	 */
	public long getPresentationTime()
	{
		return gdk_frame_timings_get_presentation_time(gdkFrameTimings);
	}

	/**
	 * Gets the natural interval between presentation times for
	 * the display that this frame was displayed on. Frame presentation
	 * usually happens during the “vertical blanking interval”.
	 *
	 * Returns: the refresh interval of the display, in microseconds,
	 *     or 0 if the refresh interval is not available.
	 *     See gdk_frame_timings_get_complete().
	 *
	 * Since: 3.8
	 */
	public long getRefreshInterval()
	{
		return gdk_frame_timings_get_refresh_interval(gdkFrameTimings);
	}

	/**
	 * Increases the reference count of @timings.
	 *
	 * Returns: @timings
	 *
	 * Since: 3.8
	 */
	public FrameTimings doref()
	{
		auto p = gdk_frame_timings_ref(gdkFrameTimings);

		if(p is null)
		{
			return null;
		}

		return ObjectG.getDObject!(FrameTimings)(cast(GdkFrameTimings*) p, true);
	}

	/**
	 * Decreases the reference count of @timings. If @timings
	 * is no longer referenced, it will be freed.
	 *
	 * Since: 3.8
	 */
	public void unref()
	{
		gdk_frame_timings_unref(gdkFrameTimings);
	}
}