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Avoid using a BufferedContainer for backgrounds unless required (#5212)

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Avoid using a BufferedContainer for backgrounds unless required
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Dean Herbert 2019-07-02 22:41:24 +09:00 committed by GitHub
commit 456850f582
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1 changed files with 32 additions and 4 deletions
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36
osu.Game/Graphics/Backgrounds/Background.cs
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@ -6,23 +6,28 @@ using osu.Framework.Graphics;
using osu.Framework.Graphics.Containers;
using osu.Framework.Graphics.Sprites;
using osu.Framework.Graphics.Textures;
using osu.Framework.Graphics.Transforms;
using osuTK;
namespace osu.Game.Graphics.Backgrounds
{
public class Background : BufferedContainer
/// <summary>
/// A background which offers blurring via a <see cref="BufferedContainer"/> on demand.
/// </summary>
public class Background : CompositeDrawable
{
public Sprite Sprite;
private readonly string textureName;
private BufferedContainer bufferedContainer;
public Background(string textureName = @"")
{
CacheDrawnFrameBuffer = true;
this.textureName = textureName;
RelativeSizeAxes = Axes.Both;
Add(Sprite = new Sprite
AddInternal(Sprite = new Sprite
{
RelativeSizeAxes = Axes.Both,
Anchor = Anchor.Centre,
@ -37,5 +42,28 @@ namespace osu.Game.Graphics.Backgrounds
if (!string.IsNullOrEmpty(textureName))
Sprite.Texture = textures.Get(textureName);
}
public Vector2 BlurSigma => bufferedContainer?.BlurSigma ?? Vector2.Zero;
/// <summary>
/// Smoothly adjusts <see cref="IBufferedContainer.BlurSigma"/> over time.
/// </summary>
/// <returns>A <see cref="TransformSequence{T}"/> to which further transforms can be added.</returns>
public void BlurTo(Vector2 newBlurSigma, double duration = 0, Easing easing = Easing.None)
{
if (bufferedContainer == null)
{
RemoveInternal(Sprite);
AddInternal(bufferedContainer = new BufferedContainer
{
CacheDrawnFrameBuffer = true,
RelativeSizeAxes = Axes.Both,
Child = Sprite
});
}
bufferedContainer.BlurTo(newBlurSigma, duration, easing);
}
}
}