private bool AnimateEntry(RenderElementDisplay display, IUserInterfaceRenderContext renderContext, RenderElementAnimator animation)
{
animation.Alpha +=
(float)renderContext.GameTime.ElapsedGameTime.TotalSeconds
/ transitionTime;
if (animation.Alpha >= 1)
{
animation.Alpha = 1;
animation.AnimatedBorderRect = display.BorderRect;
return(true);
}
const float shrinkMax = 0.1f;
float shrink = shrinkMax * MathF.Pow(1 - animation.Alpha, 3);
float leftRightMargin = shrink * display.BorderRect.Width;
float topBottomMargin = shrink * display.BorderRect.Height;
animation.AnimatedBorderRect = new Rectangle(
display.BorderRect.X + (int)leftRightMargin,
display.BorderRect.Y + (int)leftRightMargin,
display.BorderRect.Width - (int)(2 * leftRightMargin),
display.BorderRect.Height - (int)(2 * leftRightMargin));
Log.Debug($"Alpha: {animation.Alpha} BorderRect: {display.BorderRect} AnimatedBorderRect: {animation.AnimatedBorderRect}");
return(false);
}
private bool AnimateExit(RenderElementDisplay display, IUserInterfaceRenderContext renderContext, RenderElementAnimator animation)
{
animation.Alpha -=
(float)renderContext.GameTime.ElapsedGameTime.TotalSeconds
/ transitionTime;
if (animation.Alpha <= 0)
{
animation.Alpha = 0;
animation.IsVisible = false;
return(true);
}
const float shrinkMax = 0.1f;
float shrink = shrinkMax * MathF.Pow(1 - animation.Alpha, 0.8f);
float leftRightMargin = shrink * display.BorderRect.Width;
float topBottomMargin = shrink * display.BorderRect.Height;
animation.AnimatedBorderRect = new Rectangle(
display.BorderRect.X + (int)leftRightMargin,
display.BorderRect.Y + (int)leftRightMargin,
display.BorderRect.Width - (int)(2 * leftRightMargin),
display.BorderRect.Height - (int)(2 * leftRightMargin));
return(false);
}
/// <summary>
/// Checks if the render target needs to be initialized and does it.
/// Returns true if a new render target was created. False othewise.
/// </summary>
/// <param name="display"></param>
/// <returns></returns>
public bool InitializeRenderTarget(RenderElementDisplay display, GraphicsDevice graphicsDevice)
{
var animation = display.Animation;
if (animation.RenderTarget == null ||
animation.RenderTarget.Width != display.MarginRect.Width ||
animation.RenderTarget.Height != display.MarginRect.Height)
{
animation.RenderTarget?.Dispose();
var size = display.MarginRect;
if (size.Width < 1)
{
size.Width = 1;
}
if (size.Height < 1)
{
size.Height = 1;
}
animation.RenderTarget = new RenderTarget2D(
graphicsDevice,
size.Width,
size.Height);
return(true);
}
return(false);
}
public void DrawBackground(IUserInterfaceRenderContext renderContext, RenderElementDisplay display, Rectangle clientDest)
{
if (display.Style.Background == null)
{
return;
}
// This draws the background behind the border - a problem for borders which have transparency on their outer edges
// but important for borders which have transparency on their inner edges. Oh what to do...
//Rectangle backgroundRect = new Rectangle(
// new Point(dest.X - display.Region.BorderToContentOffset.Left,
// dest.Y - display.Region.BorderToContentOffset.Top),
// display.Region.BorderRect.Size);
// Here we make a compromise and set the background rectangle to be slightly smaller than
// the border rectangle
var borderLayout = display.Style.Border.ToLayoutBox();
Rectangle backgroundRect = new Rectangle(
clientDest.X - display.Region.BorderToContentOffset.Left + borderLayout.Left / 2,
clientDest.Y - display.Region.BorderToContentOffset.Top + borderLayout.Top / 2,
display.BorderRect.Width - borderLayout.Width / 2,
display.BorderRect.Height - borderLayout.Height / 2);
styleRenderer.DrawBackground(
renderContext.SpriteBatch,
display.Style.Background,
backgroundRect);
}
public void DrawFrame(IUserInterfaceRenderContext renderContext, RenderElementDisplay display, Rectangle clientDest)
{
styleRenderer.DrawFrame(
renderContext.SpriteBatch,
display.Style.Border,
new Rectangle(
new Point(clientDest.X - display.Region.BorderToContentOffset.Left,
clientDest.Y - display.Region.BorderToContentOffset.Top),
display.BorderRect.Size));
}
public bool Update(RenderElementDisplay display, IUserInterfaceRenderContext renderContext)
{
var animator = display.Animation;
animator.IsVisible = display.IsVisible;
animator.AnimatedContentRect = display.ContentRect;
animator.AnimatedBorderRect = display.BorderRect;
animator.Alpha = 1;
return(true);
}
public bool Update(RenderElementDisplay display, IUserInterfaceRenderContext renderContext)
{
var animation = display.Animation;
animation.IsVisible = true;
if (animation.State == AnimationState.TransitionIn)
{
return(AnimateEntry(display, renderContext, animation));
}
else if (animation.State == AnimationState.TransitionOut)
{
return(AnimateExit(display, renderContext, animation));
}
return(true);
}
public static void Configure(this IAnimationFactory animationFactory, RenderElementDisplay display)
{
if (display.Style.Animation == null)
{
display.Animation.In = display.Animation.In ?? animationFactory.Create("default", null);
display.Animation.Out = display.Animation.Out ?? animationFactory.Create("default", null);
display.Animation.Static = display.Animation.Static ?? animationFactory.Create("default", null);
return;
}
// Currently, we don't support updating animators when the style changes unless the name of the
// animator type has changed. I don't see a good use case for supporting this at the moment. -EY
if (display.Animation.InType != display.Style.Animation.EntryName)
{
display.Animation.InType = display.Style.Animation.EntryName;
display.Animation.In = animationFactory.Create(display.Style.Animation.EntryName, display.Style.Animation.EntryArgs);
}
if (display.Animation.OutType != display.Style.Animation.ExitName)
{
display.Animation.OutType = display.Style.Animation.ExitName;
display.Animation.Out = animationFactory.Create(display.Style.Animation.ExitName, display.Style.Animation.ExitArgs);
}
if (display.Animation.StaticType != display.Style.Animation.StaticName)
{
display.Animation.StaticType = display.Style.Animation.StaticName;
display.Animation.Static = animationFactory.Create(display.Style.Animation.StaticName, display.Style.Animation.StaticArgs);
}
if (display.Animation.In == null)
{
display.Animation.In = display.Animation.In ?? animationFactory.Create("default", null);
}
if (display.Animation.Out == null)
{
display.Animation.Out = display.Animation.Out ?? animationFactory.Create("default", null);
}
if (display.Animation.Static == null)
{
display.Animation.Static = display.Animation.Static ?? animationFactory.Create("default", null);
}
}
public void Initialize(RenderElementDisplay display)
{
}
public void ContentRectUpdated(RenderElementDisplay display)
{
display.Animation.AnimatedContentRect = display.ContentRect;
display.Animation.AnimatedBorderRect = display.BorderRect;
}
public void Initialize(RenderElementDisplay display)
{
display.Animation.Alpha = 0;
}
public void ContentRectUpdated(RenderElementDisplay display)
{
}
public RenderElementAnimator(RenderElementDisplay display)
{
this.display = display;
}