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osu-lazer/osu.Game/Graphics/ScreenshotManager.cs
2019-12-17 13:00:10 +08:00

157 lines
5.4 KiB
C#

// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
// See the LICENCE file in the repository root for full licence text.
using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
using osu.Framework.Allocation;
using osu.Framework.Audio;
using osu.Framework.Audio.Sample;
using osu.Framework.Bindables;
using osu.Framework.Graphics.Containers;
using osu.Framework.Input;
using osu.Framework.Input.Bindings;
using osu.Framework.Platform;
using osu.Framework.Threading;
using osu.Game.Configuration;
using osu.Game.Input.Bindings;
using osu.Game.Overlays;
using osu.Game.Overlays.Notifications;
using SixLabors.ImageSharp;
namespace osu.Game.Graphics
{
public class ScreenshotManager : Container, IKeyBindingHandler<GlobalAction>, IHandleGlobalKeyboardInput
{
private readonly BindableBool cursorVisibility = new BindableBool(true);
/// <summary>
/// Changed when screenshots are being or have finished being taken, to control whether cursors should be visible.
/// If cursors should not be visible, cursors have 3 frames to hide themselves.
/// </summary>
public IBindable<bool> CursorVisibility => cursorVisibility;
private Bindable<ScreenshotFormat> screenshotFormat;
private Bindable<bool> captureMenuCursor;
private GameHost host;
private Storage storage;
private NotificationOverlay notificationOverlay;
private SampleChannel shutter;
[BackgroundDependencyLoader]
private void load(GameHost host, OsuConfigManager config, Storage storage, NotificationOverlay notificationOverlay, AudioManager audio)
{
this.host = host;
this.storage = storage.GetStorageForDirectory(@"screenshots");
this.notificationOverlay = notificationOverlay;
screenshotFormat = config.GetBindable<ScreenshotFormat>(OsuSetting.ScreenshotFormat);
captureMenuCursor = config.GetBindable<bool>(OsuSetting.ScreenshotCaptureMenuCursor);
shutter = audio.Samples.Get("UI/shutter");
}
public bool OnPressed(GlobalAction action)
{
switch (action)
{
case GlobalAction.TakeScreenshot:
shutter.Play();
TakeScreenshotAsync();
return true;
}
return false;
}
public bool OnReleased(GlobalAction action) => false;
private volatile int screenShotTasks;
public Task TakeScreenshotAsync() => Task.Run(async () =>
{
Interlocked.Increment(ref screenShotTasks);
if (!captureMenuCursor.Value)
{
cursorVisibility.Value = false;
// We need to wait for at most 3 draw nodes to be drawn, following which we can be assured at least one DrawNode has been generated/drawn with the set value
const int frames_to_wait = 3;
int framesWaited = 0;
using (var framesWaitedEvent = new ManualResetEventSlim(false))
{
ScheduledDelegate waitDelegate = host.DrawThread.Scheduler.AddDelayed(() =>
{
if (framesWaited++ < frames_to_wait)
// ReSharper disable once AccessToDisposedClosure
framesWaitedEvent.Set();
}, 10, true);
framesWaitedEvent.Wait();
waitDelegate.Cancel();
}
}
using (var image = await host.TakeScreenshotAsync())
{
if (Interlocked.Decrement(ref screenShotTasks) == 0 && cursorVisibility.Value == false)
cursorVisibility.Value = true;
var fileName = getFileName();
if (fileName == null) return;
var stream = storage.GetStream(fileName, FileAccess.Write);
switch (screenshotFormat.Value)
{
case ScreenshotFormat.Png:
image.SaveAsPng(stream);
break;
case ScreenshotFormat.Jpg:
image.SaveAsJpeg(stream);
break;
default:
throw new InvalidOperationException($"Unknown enum member {nameof(ScreenshotFormat)} {screenshotFormat.Value}.");
}
notificationOverlay.Post(new SimpleNotification
{
Text = $"{fileName} saved!",
Activated = () =>
{
storage.OpenInNativeExplorer();
return true;
}
});
}
});
private string getFileName()
{
var dt = DateTime.Now;
var fileExt = screenshotFormat.ToString().ToLowerInvariant();
var withoutIndex = $"osu_{dt:yyyy-MM-dd_HH-mm-ss}.{fileExt}";
if (!storage.Exists(withoutIndex))
return withoutIndex;
for (ulong i = 1; i < ulong.MaxValue; i++)
{
var indexedName = $"osu_{dt:yyyy-MM-dd_HH-mm-ss}-{i}.{fileExt}";
if (!storage.Exists(indexedName))
return indexedName;
}
return null;
}
}
}