public UIContainer()
: this(new Point(0, 0), UserInterface.UIWindow.Size, "Container" + (object)UserInterface.GetUniqueElementID())
{
this.RelativeTo = Corner.Fill;
}
/// <summary>
/// Creates a slider with a given texture, minimum, maximum and default values.
/// </summary>
/// <param name="sliderTexture">The texture to apply to the slider. This also defines the slider size.</param>
/// <param name="min">The minimum value of the slider.</param>
/// <param name="max">The maximum value of the slider.</param>
/// <param name="value">The default value of the slider.</param>
public Slider(Texture sliderTexture, int min = 0, int max = 10, int value = 0)
: base(new Point(0, 0), new Point(200, sliderTexture.Size.Height), "Slider" + UserInterface.GetUniqueElementID())
{
this.min = min;
this.max = max;
this.value = value;
sliderButton = new Button(sliderTexture);
sliderButton.BackgroundColor = new Vector4(0, 0, 0, 0);
sliderButton.OnMouseUp = (sender, eventArgs) => sliderMouseDown = false;
sliderButton.OnMouseDown = (sender, eventArgs) =>
{
sliderMouseDown = (eventArgs.Button == MouseButton.Left);
sliderDown = eventArgs.Location.X;
};
sliderButton.OnMouseMove = (sender, eventArgs) => this.OnMouseMove(sender, eventArgs);
this.OnMouseMove = (sender, eventArgs) =>
{
if (!sliderMouseDown)
{
return;
}
if (eventArgs.Location.X < CorrectedPosition.X)
{
// handle case where the mouse has gone too far to the left
sliderButton.Position = new Point(0, 0);
this.Value = Minimum;
}
else if (eventArgs.Location.X > CorrectedPosition.X + Size.X)
{
// handle case where the mouse has gone too far to the right
sliderButton.Position = new Point(Size.X - sliderButton.Size.X, 0);
this.Value = Maximum;
}
else
{
int dx = eventArgs.Location.X - sliderDown;
int x = eventArgs.Location.X - CorrectedPosition.X - (sliderButton.Size.X / 2);
double percent = Math.Max(0, (double)x / (Size.X - sliderButton.Size.X));
// take care of locking to the closest step
if (LockToSteps)
{
x = (int)(Math.Round(percent * (Maximum - Minimum)) * (Size.X - sliderButton.Size.X) / (Maximum - Minimum));
}
else
{
x = Math.Max(0, Math.Min(Size.X - sliderButton.Size.X, x));
}
if (x == sliderButton.Position.X)
{
return;
}
sliderButton.Position = new Point(x, 0);
sliderDown = eventArgs.Location.X;
int clampedValue = Math.Max(Minimum, Math.Min(Maximum, (int)Math.Round((Maximum - Minimum) * percent) + Minimum));
if (this.value != clampedValue)
{
this.value = clampedValue;
if (OnValueChanged != null)
{
OnValueChanged(this, new MouseEventArgs());
}
}
}
sliderButton.OnResize();
};
sliderButton.RelativeTo = Corner.BottomLeft;
sliderButton.Position = new Point(value * (Size.X - sliderButton.Size.X) / (max - min), 0);
this.AddElement(sliderButton);
}