/// <summary>
/// Overload added to prevent implicit casting to ConstraintCategory when edgeDistance is set to 0.
/// http://geekswithblogs.net/BlackRabbitCoder/archive/2012/01/26/c.net-little-pitfalls-implicit-zero-to-enum-conversion.aspx
/// </summary>
public static void AddConstraint(this UIControl control, Edge controlEdge, UIControl anchor, Edge anchorEdge, int edgeDistance)
{
control.AddConstraint(controlEdge, anchor, anchorEdge, edgeDistance, ConstraintCategory.All);
}
/// <summary>
/// Adds a UI constraint to this control.
/// </summary>
/// <param name="control">Control instance.</param>
/// <param name="controlEdge">Control edge to constraint.</param>
/// <param name="anchor">Anchoring control on which the control edge is constrained. If 'null', the control is anchored relative to the viewport.</param>
/// <param name="anchorEdge">Anchor edge on which the control edge is constrained relative to.</param>
/// <param name="category">The category this constaint belongs to.</param>
public static void AddConstraint(this UIControl control, Edge controlEdge, UIControl anchor, Edge anchorEdge, ConstraintCategory category)
{
control.AddConstraint(controlEdge, anchor, anchorEdge, 0f, category);
}
public UIScrollBar(ScrollBarOrientation orientation = ScrollBarOrientation.Vertical)
{
Orientation = orientation;
string arrowResource = string.Empty;
Vector2 sliderSize = Vector2.Zero;
switch (orientation)
{
case ScrollBarOrientation.Vertical:
sliderSize = new Vector2(0, 20);
arrowResource = "graphics/arrow_down";
break;
case ScrollBarOrientation.Horizontal:
sliderSize = new Vector2(20, 0);
arrowResource = "graphics/arrow_left";
break;
}
AutoSize = false;
scrollStep = 0.02f;
Color = new Color(240, 240, 240);
Alpha = 1f;
DrawBounds = true;
sliderBackground = new UIPanel();
sliderBackground.Color = new Color(240, 240, 240);
sliderBackground.Alpha = 1f;
sliderBackground.InputMoved += sliderBackground_MouseMoved;
sliderBackground.InputPressed += sliderBackground_MousePressed;
slider = new UIPanel();
slider.Color = new Color(205, 205, 205);
slider.Alpha = 1f;
slider.AutoSize = false;
slider.AbsorbPointer = false;
slider.Size = sliderSize;
//slider.InputDown += sliderBackground_MousePressed;
arrowA = new UIButton();
var arrowAImg = new UIImage(arrowResource);
arrowAImg.Color = new Color(96, 96, 96);
arrowAImg.AddConstraint(Edge.Dock, arrowA, Edge.Dock);
arrowA.Tag = "bla";
arrowA.AddDecoration(arrowAImg);
arrowA.PointedColor = new Color(190, 190, 190);
arrowA.PressedColor = new Color(120, 120, 120);
arrowA.HighlightZoom = false;
arrowA.InputDown += arrowA_MouseHeld;
arrowB = new UIButton();
var arrowBImg = new UIImage(arrowResource);
arrowBImg.Color = new Color(96, 96, 96);
arrowBImg.AddConstraint(Edge.Dock, arrowB, Edge.Dock);
arrowB.AddDecoration(arrowBImg);
arrowB.PointedColor = new Color(190, 190, 190);
arrowB.PressedColor = new Color(120, 120, 120);
arrowB.HighlightZoom = false;
arrowB.InputDown += arrowB_MouseHeld;
switch (orientation)
{
case ScrollBarOrientation.Vertical:
arrowAImg.SpriteEffect = SpriteEffects.FlipVertically;
arrowA.AddConstraint(Edge.Horizontal | Edge.Top, this, Edge.Horizontal | Edge.Top);
arrowB.AddConstraint(Edge.Horizontal, this, Edge.Horizontal);
arrowB.AddConstraint(Edge.Bottom, this, Edge.Bottom);
sliderBackground.AddConstraint(Edge.Horizontal, this, Edge.Horizontal);
sliderBackground.AddConstraint(Edge.Top, arrowA, Edge.Bottom);
sliderBackground.AddConstraint(Edge.Bottom, arrowB, Edge.Top);
slider.AddConstraint(Edge.Top, sliderBackground, Edge.Top, ConstraintCategory.Initialization);
slider.AddConstraint(Edge.Horizontal, sliderBackground, Edge.Horizontal);
break;
case ScrollBarOrientation.Horizontal:
arrowBImg.SpriteEffect = SpriteEffects.FlipHorizontally;
arrowA.AddConstraint(Edge.Vertical | Edge.Left, this, Edge.Vertical | Edge.Left);
arrowB.AddConstraint(Edge.Vertical, this, Edge.Vertical);
arrowB.AddConstraint(Edge.Right, this, Edge.Right);
sliderBackground.AddConstraint(Edge.Vertical, this, Edge.Vertical);
sliderBackground.AddConstraint(Edge.Left, arrowA, Edge.Right);
sliderBackground.AddConstraint(Edge.Right, arrowB, Edge.Left);
slider.AddConstraint(Edge.Left, sliderBackground, Edge.Left, ConstraintCategory.Initialization);
slider.AddConstraint(Edge.Vertical, sliderBackground, Edge.Vertical);
break;
}
AbsorbPointer = false;
//base.AbsorbPointer = true;
//slider.AbsorbPointer = true;
//arrowDown.AbsorbPointer = true;
//arrowUp.AbsorbPointer = true;
sliderBackground.AbsorbPointer = true;
AddChild(arrowA);
AddChild(arrowB);
AddChild(sliderBackground);
AddChild(slider);
}