/// <summary>
/// Updates the layout of the scrollbar.
/// </summary>
public override bool UpdateLayout(bool notifyParent = true)
{
bool defaultDisableLayoutUpdate = DisableLayoutUpdate;
DisableLayoutUpdate = true;
// set properties based on orientation of scrollbar
if (AlignmentProperty.IsUndefined(this))
{
Alignment = Orientation == ElementOrientation.Horizontal ? ElementAlignment.Bottom : ElementAlignment.Right;
}
if (WidthProperty.IsUndefined(this))
{
OverrideWidth = Orientation == ElementOrientation.Horizontal ? Length : Breadth;
}
if (HeightProperty.IsUndefined(this))
{
OverrideHeight = Orientation == ElementOrientation.Horizontal ? Breadth : Length;
}
if (Orientation == ElementOrientation.Horizontal)
{
Handle.Alignment = ElementAlignment.Left;
}
else
{
Handle.Alignment = ElementAlignment.Top;
}
DisableLayoutUpdate = defaultDisableLayoutUpdate;
return(base.UpdateLayout(notifyParent));
}
/// <summary>
/// Called whenever properties affecting the image are changed.
/// </summary>
public virtual void ImageChanged()
{
if (ImageComponent == null)
{
return;
}
if (ColorProperty.IsUndefined(this))
{
if (ImageComponent.sprite != null || ImageComponent.overrideSprite != null)
{
// use white color by default if image is set
ImageComponent.color = Color.white;
}
else
{
// use clear color by default if image isn't set
ImageComponent.color = Color.clear;
}
}
var sprite = ImageComponent.overrideSprite ?? ImageComponent.sprite;
if (WidthProperty.IsUndefined(this) && HeightProperty.IsUndefined(this))
{
// if width and height is undefined, adjust size to native size of sprite
if (sprite != null)
{
ImageComponent.SetNativeSize();
OverrideWidth = ElementSize.FromPixels(ImageComponent.rectTransform.sizeDelta.x);
OverrideHeight = ElementSize.FromPixels(ImageComponent.rectTransform.sizeDelta.y);
if (OverrideHeight.Pixels != 0)
{
_nativeAspectRatio = OverrideWidth.Pixels / OverrideHeight.Pixels;
}
}
}
else
{
_nativeAspectRatio = -1;
}
bool isLoading = Sprite != null && !Sprite.IsLoaded;
if (isLoading && sprite == null)
{
// always disable image while loading
ImageComponent.enabled = false;
}
else
{
// disable raycast blocks if image is transparent
ImageComponent.enabled = RaycastBlockMode == RaycastBlockMode.Always ? true : ImageComponent.color.a > 0;
}
}
/// <summary>
/// Called just before the view and its children are loaded.
/// </summary>
protected override void BeforeLoad()
{
if (IgnoreObject)
{
return;
}
base.BeforeLoad();
bool autoSizeUndefined = AutoSizeProperty.IsUndefined(this);
if (autoSizeUndefined)
{
// if autosize is undefined, set default value depending if width and height is set
bool widthUndefined = WidthProperty.IsUndefined(this);
bool heightUndefined = HeightProperty.IsUndefined(this);
if (widthUndefined && !heightUndefined)
{
AutoSize = AutoSize.Width;
}
else if (!widthUndefined && heightUndefined)
{
AutoSize = AutoSize.Height;
}
else if (widthUndefined && heightUndefined)
{
AutoSize = AutoSize.WidthAndHeight;
}
else
{
AutoSize = AutoSize.None;
}
}
Label.AutoSize = AutoSize;
if (AutoSize == AutoSize.None && WidthProperty.IsUndefined(this))
{
// if size isn't specified and the button doesn't adjust to label size, then set default width
WidthProperty.SetValue(this, DefaultWidth, false);
}
if (LayoutParent is ToggleGroup)
{
// default to toggle-button if in toggle-group
IsToggleButton = true;
CanToggleOff = false;
}
}
/// <summary>
/// Called whenever properties affecting the image are changed.
/// </summary>
public virtual void ImageChanged()
{
if (RawImageComponent == null)
{
return;
}
if (ColorProperty.IsUndefined(this))
{
if (RawImageComponent.texture != null)
{
// use white color by default if image is set
RawImageComponent.color = Color.white;
}
else
{
// use clear color by default if image isn't set
RawImageComponent.color = Color.clear;
}
}
var texture = RawImageComponent.texture;
if (WidthProperty.IsUndefined(this) && HeightProperty.IsUndefined(this))
{
// if width and height is undefined, adjust size to native size of sprite
if (texture != null)
{
RawImageComponent.SetNativeSize();
OverrideWidth = ElementSize.FromPixels(RawImageComponent.rectTransform.sizeDelta.x);
OverrideHeight = ElementSize.FromPixels(RawImageComponent.rectTransform.sizeDelta.y);
}
}
bool isLoading = Texture != null && !Texture.IsLoaded;
if (isLoading && texture == null)
{
// always disable image while loading
RawImageComponent.enabled = false;
}
else
{
// disable raycast blocks if image is transparent
RawImageComponent.enabled = RaycastBlockMode == RaycastBlockMode.Always ? true : RawImageComponent.color.a > 0;
}
}
/// <summary>
/// Updates the layout of the group.
/// </summary>
public override bool UpdateLayout(bool notifyParent = true)
{
bool defaultDisableLayoutUpdate = DisableLayoutUpdate;
DisableLayoutUpdate = true;
bool hasNewSize = false;
float maxWidth = 0f;
float maxHeight = 0f;
float totalWidth = 0f;
float totalHeight = 0f;
bool percentageWidth = false;
bool percentageHeight = false;
bool isHorizontal = Orientation == ElementOrientation.Horizontal;
List <UIView> children = new List <UIView>();
this.ForEach <UIView>(x =>
{
children.Add(x);
}, false);
// get size of content and set content offsets and alignment
var spacing = Spacing ?? ElementSize.Default;
int childCount = children.Count;
int childIndex = 0;
for (int i = 0; i < childCount; ++i)
{
var childView = children[i];
if (!childView.IsActive)
{
// don't group inactive views
continue;
}
var childWidth = childView.OverrideWidth ?? (childView.Width ?? ElementSize.Default);
var childHeight = childView.OverrideHeight ?? (childView.Height ?? ElementSize.Default);
if (childWidth.Unit == ElementSizeUnit.Percents)
{
if (isHorizontal)
{
Debug.LogWarning(String.Format("#Delight# Unable to group view \"{0}\" horizontally as it doesn't specify its width in pixels.", childView.Name));
continue;
}
else
{
percentageWidth = true;
}
}
if (childHeight.Unit == ElementSizeUnit.Percents)
{
if (!isHorizontal)
{
Debug.LogWarning(String.Format("#Delight# Unable to group view \"{0}\" vertically as it doesn't specify its height in pixels or elements.", childView.Name));
continue;
}
else
{
percentageHeight = true;
}
}
bool defaultDisableChildLayoutUpdate = childView.DisableLayoutUpdate;
childView.DisableLayoutUpdate = true;
// set offsets and alignment
var offset = new ElementMargin(
new ElementSize(isHorizontal ? totalWidth + spacing.Pixels * childIndex : 0f, ElementSizeUnit.Pixels),
new ElementSize(!isHorizontal ? totalHeight + spacing.Pixels * childIndex : 0f, ElementSizeUnit.Pixels));
// set desired alignment if it is valid for the orientation otherwise use defaults
var alignment = ElementAlignment.Center;
var defaultAlignment = isHorizontal ? ElementAlignment.Left : ElementAlignment.Top;
var desiredAlignment = !ContentAlignmentProperty.IsUndefined(this) ? ContentAlignment : childView.Alignment;
if (isHorizontal && (desiredAlignment == ElementAlignment.Top || desiredAlignment == ElementAlignment.Bottom ||
desiredAlignment == ElementAlignment.TopLeft || desiredAlignment == ElementAlignment.BottomLeft))
{
alignment = defaultAlignment | desiredAlignment;
}
else if (!isHorizontal && (desiredAlignment == ElementAlignment.Left || desiredAlignment == ElementAlignment.Right ||
desiredAlignment == ElementAlignment.TopLeft || desiredAlignment == ElementAlignment.TopRight))
{
alignment = defaultAlignment | desiredAlignment;
}
else
{
alignment = defaultAlignment;
}
// get size of content
if (!percentageWidth)
{
totalWidth += childWidth;
maxWidth = childWidth.Pixels > maxWidth ? childWidth.Pixels : maxWidth;
}
if (!percentageHeight)
{
totalHeight += childHeight;
maxHeight = childHeight.Pixels > maxHeight ? childHeight.Pixels : maxHeight;
}
// update child layout
if (!offset.Equals(childView.OffsetFromParent) || alignment != childView.Alignment)
{
childView.OffsetFromParent = offset;
childView.Alignment = alignment;
childView.UpdateLayout(false);
}
++childIndex;
childView.DisableLayoutUpdate = defaultDisableChildLayoutUpdate;
}
// set width and height
float totalSpacing = childCount > 1 ? (childIndex - 1) * spacing.Pixels : 0f;
// adjust width to content
if (WidthProperty.IsUndefined(this))
{
if (!percentageWidth)
{
// add margins
var margin = Margin ?? ElementMargin.Default;
totalWidth += isHorizontal ? totalSpacing : 0f;
totalWidth += margin.Left.Pixels + margin.Right.Pixels;
maxWidth += margin.Left.Pixels + margin.Right.Pixels;
// adjust width to content
var newWidth = new ElementSize(isHorizontal ? totalWidth : maxWidth, ElementSizeUnit.Pixels);
if (!newWidth.Equals(Width))
{
OverrideWidth = newWidth;
hasNewSize = true;
}
}
else
{
var newWidth = new ElementSize(1, ElementSizeUnit.Percents);
if (!newWidth.Equals(Width))
{
OverrideWidth = newWidth;
hasNewSize = true;
}
}
}
else if (OverrideWidth != null && !OverrideWidth.Equals(Width))
{
// clear override
OverrideWidth = null;
hasNewSize = true;
}
// adjust height to content
if (HeightProperty.IsUndefined(this))
{
if (!percentageHeight)
{
// add margins
var margin = Margin ?? ElementMargin.Default;
totalHeight += !isHorizontal ? totalSpacing : 0f;
totalHeight += margin.Top.Pixels + margin.Bottom.Pixels;
maxHeight += margin.Top.Pixels + margin.Bottom.Pixels;
// adjust height to content
var newHeight = new ElementSize(!isHorizontal ? totalHeight : maxHeight, ElementSizeUnit.Pixels);
if (!newHeight.Equals(Height))
{
OverrideHeight = newHeight;
hasNewSize = true;
}
}
else
{
var newHeight = new ElementSize(1, ElementSizeUnit.Percents);
if (!newHeight.Equals(Height))
{
OverrideHeight = newHeight;
hasNewSize = true;
}
}
}
else if (OverrideHeight != null && !OverrideHeight.Equals(Height))
{
// clear override
OverrideHeight = null;
hasNewSize = true;
}
DisableLayoutUpdate = defaultDisableLayoutUpdate;
return(base.UpdateLayout(notifyParent) || hasNewSize);
}
