internal void Click(InputEngines.XnaMouseEventArgs e)
{
if (!e.Handled)
{
if (OnClick != null)
{
OnClick(this, e);
}
if (e.Target != this)
{
XnaUIComponent nextTarget = e.Target;
while (nextTarget.Parent != this)
{
nextTarget = nextTarget.Parent;
}
Point currentPoint = e.ClickLocation;
Point offsetPoint = new Point(currentPoint.X, currentPoint.Y);
offsetPoint.X -= ScrollX;
offsetPoint.X -= nextTarget.drawBox.X;
offsetPoint.Y -= ScrollY;
offsetPoint.Y -= nextTarget.drawBox.Y;
e.ClickLocation = offsetPoint;
nextTarget.Click(e);
// Repair event
e.ClickLocation = currentPoint;
}
e.Bubbled = true;
if (!e.Handled && (OnClick != null))
{
OnClick(this, e);
}
}
}
public override void DoLayout()
{
int count = GetChildren().Count;
if (count > 0)
{
// TODO: how to set space between icons
//System.Console.Out.WriteLine(count);
XnaUIComponent firstComponent = GetChildren()[0];
int boxWidth = firstComponent.DrawBox.Width;
int boxHeight = firstComponent.DrawBox.Height;
int totalAllowableWidthAfterFirstElementInRow = DrawBox.Width - boxWidth;
int numberOfElementInRow = 1 + totalAllowableWidthAfterFirstElementInRow / (boxWidth + SpacingBetween);
int current = 0;
foreach (XnaUIComponent component in GetChildren())
{
int x = (current % numberOfElementInRow) * (boxWidth + SpacingBetween);
int y = (current / numberOfElementInRow) * (boxHeight + SpacingBetween);
component.DrawBox = new Rectangle(x, y, boxWidth, boxHeight);
current++;
}
}
}
/// <summary>
/// Removes child from the component list, and updates the child's parent.
/// </summary>
/// <param name="child"></param>
public virtual void RemoveChild(XnaUIComponent child)
{
if (child != null)
{
// This will remove the child from the component list.
child.SetParent(null);
//DoLayout();
}
}
/// <summary>
/// Adds child to the component list, and updates the child's parent.
/// </summary>
/// <param name="child"></param>
public virtual void AddChild(XnaUIComponent child)
{
if (child != null)
{
child.SetParent(this);
components.Add(child);
//DoLayout();
}
}
// Composite pattern methods
/// <summary>
/// Called from AddChild and RemoveChild only. Updates the child so that it references the parent as its container.
/// If AddChild is called from a different parent, it should remove its reference to its current container.
/// </summary>
/// <param name="parent"></param>
public void SetParent(XnaUIComponent parent)
{
if (container != null)
{
// Remove it from the parent.
container.GetChildren().Remove(this);
}
container = parent;
}
/// <summary>
/// Returns the sprite batch from the XnaUIFrame that this XnaUIComponent is in. The frame may
/// hold on to several sprite batches, and depend on the requester to determine which one to return back
/// for drawing.
/// </summary>
/// <param name="requester"></param>
/// <returns></returns>
public virtual SpriteBatch GetSpriteBatch(XnaUIComponent requester)
{
SpriteBatch sb = null;
if (container != null)
{
sb = container.GetSpriteBatch(requester);
}
return(sb);
}
private bool overlapsDragBox(XnaUIComponent child)
{
// Two rectangles overlap if one of their corners is contained in the other, or if one is completely contained in the other.
// This can be tested by testing 4 corners in one and one corner in the other.
Point point1 = new Point(child.DrawBox.X, child.DrawBox.Y);
if (rectContainsPoint(dragBox.DrawBox, point1))
{
return(true);
}
Point point2 = new Point(child.DrawBox.X + child.DrawBox.Width, child.DrawBox.Y);
if (rectContainsPoint(dragBox.DrawBox, point2))
{
return(true);
}
Point point3 = new Point(child.DrawBox.X, child.DrawBox.Y + child.DrawBox.Height);
if (rectContainsPoint(dragBox.DrawBox, point3))
{
return(true);
}
Point point4 = new Point(child.DrawBox.X + child.DrawBox.Width, child.DrawBox.Y + child.DrawBox.Height);
if (rectContainsPoint(dragBox.DrawBox, point4))
{
return(true);
}
Point point5 = new Point(dragBox.DrawBox.X, dragBox.DrawBox.Y);
if (rectContainsPoint(child.DrawBox, point5))
{
return(true);
}
return(false);
}
private bool overlapsDragBox(XnaUIComponent child)
{
// Two rectangles overlap if one of their corners is contained in the other, or if one is completely contained in the other.
// This can be tested by testing 4 corners in one and one corner in the other.
Point point1 = new Point(child.DrawBox.X, child.DrawBox.Y);
if (rectContainsPoint(dragBox.DrawBox, point1))
return true;
Point point2 = new Point(child.DrawBox.X + child.DrawBox.Width, child.DrawBox.Y);
if (rectContainsPoint(dragBox.DrawBox, point2))
return true;
Point point3 = new Point(child.DrawBox.X, child.DrawBox.Y + child.DrawBox.Height);
if (rectContainsPoint(dragBox.DrawBox, point3))
return true;
Point point4 = new Point(child.DrawBox.X + child.DrawBox.Width, child.DrawBox.Y + child.DrawBox.Height);
if (rectContainsPoint(dragBox.DrawBox, point4))
return true;
Point point5 = new Point(dragBox.DrawBox.X, dragBox.DrawBox.Y);
if (rectContainsPoint(child.DrawBox, point5))
return true;
return false;
}
public override void Update(GameTime gameTime)
{
MouseState mouseState = Mouse.GetState();
Point mousePoint = new Point(mouseState.X, mouseState.Y);
XnaUIComponent currentUIOn = GetTarget(mousePoint);
// Fire all events for mouse down, mouse up, and clicks
if (mouseState.LeftButton == ButtonState.Pressed)
{
if (leftMouseDownTarget == null)
{
leftMouseDownTarget = GetTarget(mousePoint);
XnaMouseEventArgs e = new XnaMouseEventArgs();
e.Target = leftMouseDownTarget;
e.ClickLocation = mousePoint;
e.Handled = false;
e.Bubbled = false;
e.ButtonPressed = MouseButton.Left;
e.SingleTarget = true;
e.time = System.Environment.TickCount;
frame.MouseDown(e);
}
}
else
{
if (leftMouseDownTarget != null)
{
XnaUIComponent leftMouseUpTarget = currentUIOn;
XnaUIComponent commonAncestor = getCommonAncestor(leftMouseDownTarget, leftMouseUpTarget);
if (commonAncestor != null)
{
XnaMouseEventArgs mouseUpEventArgs = new XnaMouseEventArgs();
mouseUpEventArgs.Target = commonAncestor;
mouseUpEventArgs.ClickLocation = mousePoint;
mouseUpEventArgs.Handled = false;
mouseUpEventArgs.Bubbled = false;
mouseUpEventArgs.ButtonPressed = MouseButton.Left;
mouseUpEventArgs.SingleTarget = (leftMouseDownTarget == leftMouseUpTarget);
mouseUpEventArgs.time = System.Environment.TickCount;
frame.MouseUp(mouseUpEventArgs);
XnaMouseEventArgs e = new XnaMouseEventArgs();
e.Target = commonAncestor;
e.ClickLocation = mousePoint;
e.Handled = false;
e.Bubbled = false;
e.ButtonPressed = MouseButton.Left;
e.SingleTarget = (leftMouseDownTarget == leftMouseUpTarget);
e.time = System.Environment.TickCount;
frame.Click(e);
}
// Reset the state.
leftMouseDownTarget = null;
}
}
if (mouseState.RightButton == ButtonState.Pressed)
{
if (rightMouseDownTarget == null)
{
rightMouseDownTarget = currentUIOn;
XnaMouseEventArgs e = new XnaMouseEventArgs();
e.Target = rightMouseDownTarget;
e.ClickLocation = mousePoint;
e.Handled = false;
e.Bubbled = false;
e.ButtonPressed = MouseButton.Right;
e.SingleTarget = true;
e.time = System.Environment.TickCount;
frame.MouseDown(e);
}
}
else
{
if (rightMouseDownTarget != null)
{
XnaUIComponent rightMouseUpTarget = GetTarget(mousePoint);
XnaUIComponent commonAncestor = getCommonAncestor(rightMouseDownTarget, rightMouseUpTarget);
if (commonAncestor != null)
{
XnaMouseEventArgs mouseUpEventArgs = new XnaMouseEventArgs();
mouseUpEventArgs.Target = commonAncestor;
mouseUpEventArgs.ClickLocation = mousePoint;
mouseUpEventArgs.Handled = false;
mouseUpEventArgs.Bubbled = false;
mouseUpEventArgs.ButtonPressed = MouseButton.Left;
mouseUpEventArgs.SingleTarget = (rightMouseDownTarget == rightMouseUpTarget);
mouseUpEventArgs.time = System.Environment.TickCount;
frame.MouseUp(mouseUpEventArgs);
XnaMouseEventArgs e = new XnaMouseEventArgs();
e.Target = commonAncestor;
e.ClickLocation = mousePoint;
e.Handled = false;
e.Bubbled = false;
e.ButtonPressed = MouseButton.Right;
e.SingleTarget = (rightMouseDownTarget == rightMouseUpTarget);
e.time = System.Environment.TickCount;
frame.Click(e);
}
// Reset the state.
rightMouseDownTarget = null;
}
}
// Handle mouse enter and exit events.
if (mouseHoverTarget != currentUIOn)
{
// Base case : First time entering.
if (mouseHoverTarget == null)
{
XnaUIComponent current = currentUIOn;
Stack<XnaUIComponent> stack = new Stack<XnaUIComponent>();
while (current != null)
{
stack.Push(current);
current = current.Parent;
}
while (stack.Count > 0)
{
current = stack.Pop();
current.MouseEnter();
}
}
else
{
// Mouse has moved
XnaUIComponent current = mouseHoverTarget;
XnaUIComponent ancestor = getCommonAncestor(currentUIOn, mouseHoverTarget);
while (current != ancestor)
{
current.MouseLeave();
current = current.Parent;
}
current = currentUIOn;
Stack<XnaUIComponent> stack = new Stack<XnaUIComponent>();
while (current != ancestor)
{
stack.Push(current);
current = current.Parent;
}
while (stack.Count > 0)
{
current = stack.Pop();
current.MouseEnter();
}
}
mouseHoverTarget = currentUIOn;
}
base.Update(gameTime);
}
private XnaUIComponent getCommonAncestor(XnaUIComponent c1, XnaUIComponent c2)
{
List<XnaUIComponent> list1 = new List<XnaUIComponent>();
XnaUIComponent current = c1;
while (current != null)
{
list1.Add(current);
current = current.Parent;
}
List<XnaUIComponent> list2 = new List<XnaUIComponent>();
current = c2;
while (current != null)
{
list2.Add(current);
current = current.Parent;
}
int differenceInSize = Math.Abs(list1.Count - list2.Count);
List<XnaUIComponent> longerList = list2.Count > list1.Count ? list2 : list1;
while (differenceInSize > 0)
{
longerList.RemoveAt(0);
differenceInSize--;
}
XnaUIComponent commonAncestor = null;
for (int i = 0; i < list1.Count; i++)
{
if (list1[i] == list2[i])
{
commonAncestor = list1[i];
break;
}
}
return commonAncestor;
}
public override SpriteBatch GetSpriteBatch(XnaUIComponent requester)
{
return(spriteBatch);
}
public override SpriteBatch GetSpriteBatch(XnaUIComponent requester)
{
return spriteBatch;
}
/// <summary>
/// Adds child to the component list, and updates the child's parent.
/// </summary>
/// <param name="child"></param>
public virtual void AddChild(XnaUIComponent child)
{
if (child != null)
{
child.SetParent(this);
components.Add(child);
DoLayout();
}
}
// Composite pattern methods
/// <summary>
/// Called from AddChild and RemoveChild only. Updates the child so that it references the parent as its container.
/// If AddChild is called from a different parent, it should remove its reference to its current container.
/// </summary>
/// <param name="parent"></param>
public void SetParent(XnaUIComponent parent)
{
if (container != null)
{
// Remove it from the parent.
container.GetChildren().Remove(this);
}
container = parent;
}
/// <summary>
/// Removes child from the component list, and updates the child's parent.
/// </summary>
/// <param name="child"></param>
public virtual void RemoveChild(XnaUIComponent child)
{
if (child != null)
{
// This will remove the child from the component list.
child.SetParent(null);
DoLayout();
}
}
/// <summary>
/// Returns the sprite batch from the XnaUIFrame that this XnaUIComponent is in. The frame may
/// hold on to several sprite batches, and depend on the requester to determine which one to return back
/// for drawing.
/// </summary>
/// <param name="requester"></param>
/// <returns></returns>
public virtual SpriteBatch GetSpriteBatch(XnaUIComponent requester)
{
SpriteBatch sb = null;
if (container != null)
{
sb = container.GetSpriteBatch(requester);
}
return sb;
}
