/// <summary>
/// Create a new Widget.
/// </summary>
/// <param name="screen">The Widget's screen.</param>
/// <param name="parent">The Widget's parent.</param>
private Widget(WidgetScreen screen, Widget parent)
{
if (screen == null)
throw new ArgumentNullException("screen");
Screen = screen;
Parent = parent;
StateChanged("");
}
/// <summary>
/// Create a new Widget.
/// </summary>
/// <param name="parent">The Widget's parent.</param>
public Widget(Widget parent)
: this(parent.Screen, parent)
{
}
/// <summary>
/// Check if a Widget is an ancestor of this one.
/// </summary>
/// <param name="potentialAncestor">The widget to check.</param>
/// <returns>True if potentialAncestor was in the parent hierarchy of the current Widget.</returns>
public bool isAncestor(Widget potentialAncestor)
{
if (potentialAncestor == null)
return false;
if (potentialAncestor == this)
return true;
return parent == null ? false : parent.isAncestor(potentialAncestor);
}
/// <summary>
/// Create a new Control with a given parent.
/// </summary>
/// <param name="parent">The Control's parent.</param>
public Control(Widget parent)
: base(parent)
{
}
protected void RegisterCSSClass(String cssClassName, Widget widget)
{
if (cssClassName == null || cssClassName.Length == 0 || widget == null)
return;
List<Widget> explicitWidgets = null;
if (!cssStyleLinks.TryGetValue(cssClassName, out explicitWidgets))
cssStyleLinks[cssClassName] = (explicitWidgets = new List<Widget>());
if (!explicitWidgets.Contains(widget))
explicitWidgets.Add(widget);
}
/// <summary>
/// Handles the input provided by the ScreenManager's InputControl. You should not need to override this - use the specialized input methods instead!
/// </summary>
/// <param name="input">The InputControl object passed in from the ScreenManager.</param>
public override void HandleInput(InputControl input)
{
base.HandleInput(input);
//store mouse pos
Point mousePos = input.CurrentMouse;
//check for a widget at mouse point
Widget widgetAtPoint = baseWidget.ChildAtPoint(mousePos, HitFlags.Mouse);
//handle mouse movement
bool cascade = true;
if (input.MouseMoved())
{
//check for mouse enter/leave events
if (widgetAtPoint != mouseHoverWidget)
{
if (mouseHoverWidget != null)
cascade = !mouseHoverWidget.MouseLeave(mousePos);
mouseHoverWidget = widgetAtPoint;
if (mouseHoverWidget != null)
cascade &= !mouseHoverWidget.MouseEnter(mousePos);
}
if (cascade)
MouseMove(mousePos,input.PreviousMouse);
}
//handle mouse clicks
for (int i = 1; i <= 5; i++)
{
ButtonState current;
if (input.MouseChanged(i,out current))
{
cascade = true;
if (current == ButtonState.Pressed)
{
mouseDownWidgets[i-1] = widgetAtPoint;
if (widgetAtPoint != null)
cascade = !widgetAtPoint.MouseDown(mousePos, i);
if (cascade)
MouseDown(mousePos, i);
}
else
{
if (mouseDownWidgets[i-1] != null)
cascade = !mouseDownWidgets[i - 1].MouseUp(mousePos, i);
mouseDownWidgets[i-1] = null;
if (cascade)
MouseUp(mousePos, i);
}
}
}
//check keyboard events
for (int i = 0; i < watchedKeys.Length; i++)
{
if (input.KeyReleased(watchedKeys[i]))
{
cascade = true;
if (selectedWidget != null)
cascade = !selectedWidget.KeyUp(watchedKeys[i]);
if (cascade)
KeyUp(watchedKeys[i]);
}
if (input.KeyPressed(watchedKeys[i]))
{
cascade = true;
if (selectedWidget != null)
cascade = !selectedWidget.KeyDown(watchedKeys[i]);
if (cascade)
KeyDown(watchedKeys[i]);
}
}
}
/// <summary>
/// Create a new Button with a given parent.
/// </summary>
/// <param name="parent">The Widget's parent.</param>
public Button(Widget parent)
: base(parent)
{
HitFlags = HitFlags.Mouse;
}
public override void Draw(SpriteBatch spriteBatch, Widget widget, Color col)
{
if (Texture == null
|| col.A == 0
|| BorderStyle == Styles.BorderStyle.None
|| BorderStyle == Styles.BorderStyle.Hidden
|| BorderWidth <= 0)
return;
int left = (int)((float)widget.CalculatedBoundsI.X * Width);
int top = (int)((float)widget.CalculatedBoundsI.Y * Height);
int width = (int)((float)widget.CalculatedBoundsI.Width * Width);
int height = (int)((float)widget.CalculatedBoundsI.Height * Height);
if (BorderStyle == Styles.BorderStyle.Solid || BorderStyle == Styles.BorderStyle.Double)
{
//top and bottom
spriteBatch.Draw(Texture, new Rectangle(left, top, width, BorderWidth), col);
spriteBatch.Draw(Texture, new Rectangle(left, top + height - BorderWidth, width, BorderWidth), col);
//left and right
spriteBatch.Draw(Texture, new Rectangle(left, top + BorderWidth, BorderWidth, height - 2 * BorderWidth), col);
spriteBatch.Draw(Texture, new Rectangle(left + width - BorderWidth, top + BorderWidth, BorderWidth, height - 2 * BorderWidth), col);
if (BorderStyle == Styles.BorderStyle.Double)
{
left += BorderWidth * 2;
top += BorderWidth * 2;
width -= BorderWidth * 4;
height -= BorderWidth * 4;
//top and bottom
spriteBatch.Draw(Texture, new Rectangle(left, top, width, BorderWidth), col);
spriteBatch.Draw(Texture, new Rectangle(left, top + height - BorderWidth, width, BorderWidth), col);
//left and right
spriteBatch.Draw(Texture, new Rectangle(left, top + BorderWidth, BorderWidth, height - 2 * BorderWidth), col);
spriteBatch.Draw(Texture, new Rectangle(left + width - BorderWidth, top + BorderWidth, BorderWidth, height - 2 * BorderWidth), col);
}
}
else if (BorderStyle == Styles.BorderStyle.Dotted || BorderStyle == Styles.BorderStyle.Dashed)
{
int len = BorderWidth * (BorderStyle == Styles.BorderStyle.Dotted ? 1 : 4);
//top and bottom
int pos = 0;
while (pos < width)
{
spriteBatch.Draw(Texture, new Rectangle(left + pos, top, len, BorderWidth), col);
spriteBatch.Draw(Texture, new Rectangle(left + pos, top + height - BorderWidth, len, BorderWidth), col);
pos += len * 2;
}
//left and right
height -= BorderWidth * 2;
pos = 0;
while (pos < height)
{
spriteBatch.Draw(Texture, new Rectangle(left, top + BorderWidth + pos, BorderWidth, len), col);
spriteBatch.Draw(Texture, new Rectangle(left + width - BorderWidth, top + BorderWidth + pos, BorderWidth, len), col);
pos += len * 2;
}
}
}