protected internal override void OnTouchEvent(TouchEventCollection touchEvents)
{
base.OnTouchEvent(touchEvents);
TouchEvent primaryTouchEvent = touchEvents.PrimaryTouchEvent;
if (primaryTouchEvent.Type == TouchEventType.Down)
{
this.isFlick = false;
if (this.animationState == LiveScrollPanel.AnimationState.Up)
{
this.animationState = LiveScrollPanel.AnimationState.Migrate;
this.migrateDownPos = primaryTouchEvent.LocalPosition;
this.migratePos = this.migrateDownPos;
}
else
{
this.touchDownPos = primaryTouchEvent.LocalPosition;
this.touchPos = this.touchDownPos;
touchEvents.Forward = true;
}
}
else if (primaryTouchEvent.Type == TouchEventType.Up)
{
this.isDrag = false;
}
if (!this.isDrag)
{
touchEvents.Forward = true;
}
if (primaryTouchEvent.Type == TouchEventType.Up)
{
this.animationState = LiveScrollPanel.AnimationState.Up;
this.flickElapsedTime = 0f;
}
}
public LiveScrollPanel()
{
this.animationSprt = new UISprite(1);
this.animationSprt.InternalShaderType = InternalShaderType.LiveScrollPanel;
this.animationSprt.TextureWrapMode = (TextureWrapMode)1;
this.animationSprt.BlendMode = BlendMode.Premultiplied;
this.animationSprt.Visible = false;
base.RootUIElement.AddChildLast(this.animationSprt);
this.MaxTextureWidth = this.defaultMaxTextureWidth;
this.MaxTextureHeight = this.defaultMaxtextureHeight;
this.needPartialTexture = false;
this.textureOffsetX = 0f;
this.textureOffsetY = 0f;
this.frontPanel = new Panel();
base.AddChildLast(this.frontPanel);
this.frontPanel.Clip = true;
this.frontPanel.X = 0f;
this.frontPanel.Y = 0f;
DragGestureDetector dragGestureDetector = new DragGestureDetector();
dragGestureDetector.DragDetected += new EventHandler <DragEventArgs>(this.DragEventHandler);
base.AddGestureDetector(dragGestureDetector);
FlickGestureDetector flickGestureDetector = new FlickGestureDetector();
flickGestureDetector.FlickDetected += new EventHandler <FlickEventArgs>(this.FlickEventHandler);
base.AddGestureDetector(flickGestureDetector);
base.Clip = true;
this.HorizontalScroll = true;
this.VerticalScroll = true;
this.animationState = LiveScrollPanel.AnimationState.None;
base.HookChildTouchEvent = true;
base.Width = 600f;
base.Height = 300f;
this.UpdateView();
}
private void FlickEventHandler(object sender, FlickEventArgs e)
{
base.ResetState(false);
this.animationState = LiveScrollPanel.AnimationState.Up;
this.isFlick = true;
this.touchVelocity = e.Speed / 1000f * this.flickCoeff;
this.panelVelocity += e.Speed / 1000f * this.flickCoeff;
}
protected internal override void OnResetState()
{
this.animationState = LiveScrollPanel.AnimationState.None;
this.unsetTexture();
this.touchPos = default(Vector2);
this.panelVelocity = default(Vector2);
this.touchVelocity = default(Vector2);
this.flickElapsedTime = 0f;
}
private void DragEventHandler(object sender, DragEventArgs e)
{
base.ResetState(false);
this.isDrag = true;
if (this.animationState == LiveScrollPanel.AnimationState.None)
{
this.animationState = LiveScrollPanel.AnimationState.Migrate;
this.migrateDownPos = e.LocalPosition;
this.migratePos = this.migrateDownPos;
return;
}
if (this.animationState == LiveScrollPanel.AnimationState.Migrate)
{
this.migratePos = e.LocalPosition;
return;
}
this.animationState = LiveScrollPanel.AnimationState.Drag;
this.touchPos = e.LocalPosition;
}
private void internalUpdate(float elapsedTime)
{
if (this.animationState == LiveScrollPanel.AnimationState.Drag || this.animationState == LiveScrollPanel.AnimationState.Migrate)
{
float num;
float num2;
if (this.needPartialTexture)
{
num = this.CalculateTextureOffsetX();
num2 = this.CalculateTextureOffsetY();
}
else
{
num = 0f;
num2 = 0f;
}
if (this.texImage == null)
{
this.textureOffsetX = num;
this.textureOffsetY = num2;
this.setTexture();
}
else if (this.textureOffsetX != num || this.textureOffsetY != num2)
{
this.textureOffsetX = num;
this.textureOffsetY = num2;
this.unsetTexture();
this.setTexture();
}
if (this.animationState == LiveScrollPanel.AnimationState.Migrate)
{
bool flag = true;
Vector2 vector = this.migratePos - this.touchPos;
if (vector.LengthSquared() > 4f)
{
this.touchPos += vector * (elapsedTime / 100f) + vector.Normalize() * 2f;
flag = false;
}
else
{
this.touchPos = this.migratePos;
}
Vector2 vector2 = this.migrateDownPos - this.touchDownPos;
if (vector2.LengthSquared() > 4f)
{
this.touchDownPos += vector2 * (elapsedTime / 100f) + vector2.Normalize() * 2f;
flag = false;
}
else
{
this.touchDownPos = this.migrateDownPos;
}
if (flag)
{
this.animationState = LiveScrollPanel.AnimationState.Drag;
}
}
if (this.panelVelocity.LengthSquared() > 1E-09f)
{
Vector2 vector3 = -this.panelVelocity.Normalize() * this.kineticFriction - this.panelVelocity * this.viscousFriction;
this.panelVelocity += (this.tension + vector3) * elapsedTime * this.forceCoeff;
}
else if (this.tension.LengthSquared() > (this.isFlick ? (this.staticFrictionSq / 100f) : this.staticFrictionSq))
{
this.panelVelocity += this.tension * elapsedTime * this.forceCoeff;
}
if (this.HorizontalScroll)
{
this.frontPanel.X += this.panelVelocity.X * elapsedTime;
}
if (this.VerticalScroll)
{
this.frontPanel.Y += this.panelVelocity.Y * elapsedTime;
}
this.adjustPanelEdge();
return;
}
if (this.animationState == LiveScrollPanel.AnimationState.Up)
{
if (this.needPartialTexture)
{
float num3 = this.CalculateTextureOffsetX();
float num4 = this.CalculateTextureOffsetY();
if (this.textureOffsetX != num3 || this.textureOffsetY != num4)
{
this.textureOffsetX = num3;
this.textureOffsetY = num4;
this.unsetTexture();
this.setTexture();
}
}
if (this.texImage == null || (this.tension.LengthSquared() < 4f && this.touchVelocity.LengthSquared() < 0.01f && this.panelVelocity.LengthSquared() < 0.01f))
{
this.OnResetState();
return;
}
if (this.panelVelocity.LengthSquared() > 0.0001f)
{
Vector2 vector4 = -this.panelVelocity.Normalize() * this.kineticFriction - this.panelVelocity * this.viscousFriction;
this.panelVelocity += (this.tension + vector4) * elapsedTime * this.forceCoeff * this.panelTouchRatio;
}
else if (this.tension.LengthSquared() > this.staticFrictionSq || this.isFlick)
{
this.panelVelocity += this.tension * elapsedTime * this.forceCoeff * this.panelTouchRatio;
}
if (!this.isFlick)
{
if (this.frontPanel.X > -10f && this.panelVelocity.X < 0f)
{
this.panelVelocity.X = (this.frontPanel.X + 10f) * elapsedTime * this.forceCoeff;
}
else if (this.frontPanel.X < this.Width - this.frontPanel.Width + 10f && this.panelVelocity.X > 0f)
{
this.panelVelocity.X = (this.frontPanel.X - (this.Width - this.frontPanel.Width + 10f)) * elapsedTime * this.forceCoeff;
}
if (this.frontPanel.Y > -10f && this.panelVelocity.Y < 0f)
{
this.panelVelocity.Y = (this.frontPanel.Y + 10f) * elapsedTime * this.forceCoeff;
}
else if (this.frontPanel.Y < this.Height - this.frontPanel.Height + 10f && this.panelVelocity.Y > 0f)
{
this.panelVelocity.Y = (this.frontPanel.Y - (this.Height - this.frontPanel.Height + 10f)) * elapsedTime * this.forceCoeff;
}
}
this.isFlick = false;
Vector2 vector5 = default(Vector2);
if (this.touchVelocity.LengthSquared() > 0.0001f)
{
vector5 = -this.touchVelocity.Normalize() * this.kineticFriction - this.touchVelocity * this.viscousFriction;
vector5 *= this.touchFrictionRatio;
}
if (this.touchVelocity.LengthSquared() < 0.01f && this.tension.LengthSquared() < 50f)
{
this.touchVelocity += (vector5 - this.tension * (1f + 100f / this.tension.LengthSquared())) * elapsedTime * this.forceCoeff * (1f - this.panelTouchRatio);
if (this.tension.LengthSquared() < 1.401298E-45f || this.touchVelocity.Dot(this.tension) / this.tension.LengthSquared() * elapsedTime < -1f)
{
this.touchVelocity = -this.tension / elapsedTime;
}
}
else
{
this.touchVelocity += (vector5 - this.tension) * elapsedTime * this.forceCoeff * (1f - this.panelTouchRatio);
}
if (this.tension.LengthSquared() > 1.401298E-45f)
{
this.touchVelocity = this.tension * this.touchVelocity.Dot(this.tension) / this.tension.LengthSquared();
}
if (this.HorizontalScroll)
{
this.frontPanel.X += this.panelVelocity.X * elapsedTime;
}
if (this.VerticalScroll)
{
this.frontPanel.Y += this.panelVelocity.Y * elapsedTime;
}
this.touchPos += this.touchVelocity * elapsedTime;
this.adjustPanelEdge();
}
}
