/// <summary>
/// Occurs when a mouse button is depressed.
/// </summary>
/// <param name="e"></param>
protected virtual void OnMouseDown(MouseControlEventArgs e)
{
e.SourceControl = this;
if (IsResizable && e.Left)
{
if (this.TopDragArea.Intersects(e.SourceArea))
{
this.IsDraggingTop = true;
}
if (this.BottomDragArea.Intersects(e.SourceArea))
{
this.IsDraggingBottom = true;
}
if (this.RightDragArea.Intersects(e.SourceArea))
{
this.IsDraggingRight = true;
}
if (this.LeftDragArea.Intersects(e.SourceArea))
{
this.IsDraggingLeft = true;
}
}
if (e.SourceArea.Intersects(this.Area))
{
this.IsDepressed = true;
this.IsDirty = true;
EventHandler<MouseControlEventArgs> handler = MouseDown;
if (handler != null)
{
handler(this, e);
}
}
foreach (var control in this.Children)
{
control.OnMouseDown(e);
}
}
/// <summary>
/// Occurs when a mouse button is released.
/// </summary>
/// <param name="e"></param>
protected virtual void OnMouseUp(MouseControlEventArgs e)
{
e.SourceControl = this;
if (this.GuiManager != null)
{
if (IsDraggingLeft)
{
this.Resize(new Rectangle(this.GuiManager.MouseArea.X, this.Area.Y, this.Area.Width + (this.Area.X - this.GuiManager.MouseArea.X), this.Area.Height));
}
if (IsDraggingTop)
{
this.Resize(new Rectangle(this.Area.X, this.GuiManager.MouseArea.Y, this.Area.Width, this.Area.Height + (this.Area.Y - this.GuiManager.MouseArea.Y)));
}
if (IsDraggingRight)
{
this.Resize(new Rectangle(this.Area.X, this.Area.Y, this.GuiManager.MouseArea.X - this.Area.X, this.Area.Height));
}
if (IsDraggingBottom)
{
this.Resize(new Rectangle(this.Area.X, this.Area.Y, this.Area.Width, this.GuiManager.MouseArea.Y - this.Area.Y));
}
}
this.IsDraggingBottom = false;
this.IsDraggingLeft = false;
this.IsDraggingRight = false;
this.IsDraggingTop = false;
if (this.IsDepressed)
{
this.IsDepressed = false;
this.IsDirty = true;
}
if (e.SourceArea.Intersects(this.Area))
{
EventHandler<MouseControlEventArgs> handler = MouseUp;
if (handler != null)
{
handler(this, e);
}
//Handle clicks (each child control needs to check this themselves because of the area check.
var clickArguments = new MouseControlEventArgs(this);
if (e.Left)
{
if (e.LeftArea.Intersects(this.Area))
{
clickArguments.Left = true;
this.HasFocus = true;
}
else
{
this.HasFocus = false;
}
}
if (e.Middle)
{
if (e.MiddleArea.Intersects(this.Area))
{
clickArguments.Middle = true;
}
}
if (e.Right)
{
if (e.RightArea.Intersects(this.Area))
{
clickArguments.Right = true;
}
}
if (clickArguments.Left || clickArguments.Middle || clickArguments.Right)
{
this.OnClick(clickArguments);
}
}
foreach (var control in this.Children)
{
control.OnMouseUp(e);
}
}
/// <summary>
/// Raises events for controls under the Gui manager.
/// This should be called from the Game Update method.
/// </summary>
public void Update()
{
var mouseState = Mouse.GetState();
var keyboardState = Keyboard.GetState();
var gamepadState = GamePad.GetState(PlayerIndex.One); //TODO: design gamepad support.
this.MouseArea = new Rectangle(mouseState.X,mouseState.Y,1,1); //used for intersect.
//Mouse Down
var mouseDownArguments = new MouseControlEventArgs(this);
mouseDownArguments.SourceArea = this.MouseArea;
if (mouseState.LeftButton == ButtonState.Pressed && mOldMouseState.LeftButton != ButtonState.Pressed)
{
mouseDownArguments.Left = true;
mLeftMouseDownArea = mouseDownArguments.SourceArea;
}
if (mouseState.MiddleButton == ButtonState.Pressed && mOldMouseState.MiddleButton != ButtonState.Pressed)
{
mouseDownArguments.Middle = true;
mMiddleMouseDownArea = mouseDownArguments.SourceArea;
}
if (mouseState.RightButton == ButtonState.Pressed && mOldMouseState.RightButton != ButtonState.Pressed)
{
mouseDownArguments.Right = true;
mRightMouseDownArea = mouseDownArguments.SourceArea;
}
if (mouseDownArguments.Left || mouseDownArguments.Middle || mouseDownArguments.Right)
{
base.OnMouseDown(mouseDownArguments);
}
//Mouse Up
var mouseUpArguments = new MouseControlEventArgs(this);
mouseUpArguments.SourceArea = this.MouseArea;
if (mouseState.LeftButton == ButtonState.Released && mOldMouseState.LeftButton != ButtonState.Released)
{
mouseUpArguments.Left = true;
mouseUpArguments.LeftArea = mLeftMouseDownArea;
}
if (mouseState.MiddleButton == ButtonState.Released && mOldMouseState.MiddleButton != ButtonState.Released)
{
mouseUpArguments.Middle = true;
mouseUpArguments.MiddleArea = mMiddleMouseDownArea;
}
if (mouseState.RightButton == ButtonState.Released && mOldMouseState.RightButton != ButtonState.Released)
{
mouseUpArguments.Right = true;
mouseUpArguments.RightArea = mRightMouseDownArea;
}
if (mouseUpArguments.Left || mouseUpArguments.Middle || mouseUpArguments.Right)
{
base.OnMouseUp(mouseUpArguments);
}
//Key Down
bool isShiftDepressed = keyboardState.IsKeyDown(Keys.LeftShift) || keyboardState.IsKeyDown(Keys.RightShift);
bool isAltDepressed = keyboardState.IsKeyDown(Keys.LeftAlt) || keyboardState.IsKeyDown(Keys.RightAlt);
bool isControlDepressed = keyboardState.IsKeyDown(Keys.LeftControl) || keyboardState.IsKeyDown(Keys.RightControl);
foreach (var pressedKey in keyboardState.GetPressedKeys())
{
if (this.mOldKeyboardState.IsKeyUp(pressedKey))
{
var keyDownArguments = new KeyControlEventArgs(this);
keyDownArguments.IsShiftDepressed = isShiftDepressed;
keyDownArguments.IsAltDepressed = isAltDepressed;
keyDownArguments.IsControlDepressed = isControlDepressed;
keyDownArguments.SourceKey = pressedKey;
base.OnKeyDown(keyDownArguments);
}
}
//Key Up
foreach (var pressedKey in this.mOldKeyboardState.GetPressedKeys())
{
if (keyboardState.IsKeyUp(pressedKey))
{
var keyUpArguments = new KeyControlEventArgs(this);
keyUpArguments.SourceKey = pressedKey;
base.OnKeyUp(keyUpArguments);
}
}
//change old state so events don't repeat.
mOldMouseState = mouseState;
mOldKeyboardState = keyboardState;
}