/// Get a bounding rectangle around all the widgets that have been added to this frame
public Rect CalculateWidgetBounds()
{
if (mAutoLayoutNeedsUpdate)
{
AutoLayoutUpdate();
}
Rect?bounds = null;
foreach (KeyValuePair <IWidget, IGuiPosition> widget in mWidgets)
{
if (widget.Key != null)
{
Vector2 position = widget.Value.GetPosition(widget.Key);
Vector2 size = widget.Key.ExternalSize;
Rect widgetBounds = new Rect(position.x, position.y, size.x, size.y);
if (bounds == null)
{
bounds = widgetBounds;
}
else
{
bounds = RectUtility.BoundingRect(widgetBounds, (Rect)bounds);
}
}
}
if (bounds == null)
{
bounds = new Rect();
}
return((Rect)bounds);
}
public Vector2 SizeThumb(IGuiElement thumb)
{
if (thumb != mThumb)
{
throw new Exception("ProceduralSize is applying the SizeThumb function to the wrong widget (" + thumb.Name + ")");
}
float minHeight = 0.0f;
if (thumb.Style != null)
{
// Keep the thumb graphic from overlapping itself
minHeight = thumb.Style.NinePartScale.GetSizeDifference().y;
}
Vector2 result = InternalSize;
float maxHeight = result.y;
Rect widgetBounds = Frame.CalculateWidgetBounds();
widgetBounds = RectUtility.BoundingRect(Vector2.zero, widgetBounds);
float percentInView = Frame.InternalSize.y / widgetBounds.yMax;
// If the entire frame fits, make sure we are viewing the top of the frame
if (percentInView >= 1.0f)
{
Frame.ResetScroll();
}
// Refresh the frame to make sure the scrollbar's percent is again accurate,
// but only if the bounds changed (as an optimization)
if (mOldWidgetBounds != null && (Rect)mOldWidgetBounds != widgetBounds)
{
Refresh();
}
// Remember this run's bounds for next time
mOldWidgetBounds = widgetBounds;
result.y = Mathf.Lerp(minHeight, maxHeight, percentInView);
return(result);
}
public void BoundingRectVerifivation()
{
Rect testRect1 = new Rect(0.0f, 0.0f, 30.0f, 30.0f);
Rect testRect2 = new Rect(10.0f, 10.0f, 10.0f, 10.0f);
Rect testRect3 = new Rect(10.0f, 10.0f, 100.0f, 100.0f);
Vector2 testPnt1 = new Vector2(0.0f, 0.0f);
Vector2 testPnt2 = new Vector2(-100.0f, 100.0f);
Rect bounds1 = RectUtility.BoundingRect(testRect1, testRect2);
Assert.AreEqual(0.0f, bounds1.xMin);
Assert.AreEqual(0.0f, bounds1.yMin);
Assert.AreEqual(30.0f, bounds1.xMax);
Assert.AreEqual(30.0f, bounds1.yMax);
Rect bounds2 = RectUtility.BoundingRect(bounds1, testRect3);
Assert.AreEqual(0.0f, bounds2.x);
Assert.AreEqual(0.0f, bounds2.y);
Assert.AreEqual(110.0f, bounds2.width);
Assert.AreEqual(110.0f, bounds2.height);
Rect bounds3 = RectUtility.BoundingRect(testPnt1, testRect2);
Assert.AreEqual(0.0f, bounds3.x);
Assert.AreEqual(0.0f, bounds3.y);
Assert.AreEqual(20.0f, bounds3.width);
Assert.AreEqual(20.0f, bounds3.height);
Rect bounds4 = RectUtility.BoundingRect(testPnt2, testRect1);
Assert.AreEqual(-100.0f, bounds4.x);
Assert.AreEqual(0.0f, bounds4.y);
Assert.AreEqual(130.0f, bounds4.width);
Assert.AreEqual(100.0f, bounds4.height);
}
