private static void SetActive(FluidGridViewTriggerCollection triggers)
{
if (triggers.Owner.ItemsPanelRoot == null)
{
return;
}
var owner = triggers.Owner;
var reference = GetReference(owner);
var paddingNear = reference.Orientation == Orientation.Horizontal
? owner.Padding.Left
: owner.Padding.Top;
var paddingFar = reference.Orientation == Orientation.Horizontal
? owner.Padding.Right
: owner.Padding.Bottom;
var parentLength = reference.Orientation == Orientation.Horizontal
? owner.ItemsPanelRoot.ActualWidth
: owner.ItemsPanelRoot.ActualHeight;
FluidGridViewTriggerBase trigger = null;
foreach (var child in triggers)
{
if (child.MaybeActive(parentLength))
{
trigger = child;
}
}
if (trigger != null)
{
//var itemLength = trigger.GetItemLength(parentLength - paddingNear - paddingFar);
var itemLength = trigger.GetItemLength(parentLength);
if (reference.Orientation == Orientation.Horizontal)
{
reference.ItemWidth = itemLength;
}
else
{
reference.ItemHeight = itemLength;
}
var orientationOnly = GetOrientationOnly(owner);
if (!orientationOnly)
{
if (reference.Orientation == Orientation.Horizontal)
{
reference.ItemHeight = itemLength;
}
else
{
reference.ItemWidth = itemLength;
}
}
}
}
public static FluidGridViewTriggerCollection GetTriggers(DependencyObject obj)
{
var sender = obj as ItemsControl;
var triggers = (FluidGridViewTriggerCollection)obj.GetValue(TriggersProperty);
if (triggers == null)
{
triggers = new FluidGridViewTriggerCollection(sender);
triggers.CollectionChanged += OnCollectionChanged;
sender.SizeChanged += OnSizeChanged;
obj.SetValue(TriggersProperty, triggers);
}
return(triggers);
}
private static void SetActive(FluidGridViewTriggerCollection triggers, WrapGridReference reference)
{
if (triggers.Owner.ItemsPanelRoot == null || reference == null)
{
return;
}
var owner = triggers.Owner;
//var paddingNear = reference.Orientation == Orientation.Horizontal
// ? owner.Padding.Left
// : owner.Padding.Top;
//var paddingFar = reference.Orientation == Orientation.Horizontal
// ? owner.Padding.Right
// : owner.Padding.Bottom;
var parentLength = reference.Orientation == Orientation.Horizontal
? owner.ItemsPanelRoot.ActualWidth
: owner.ItemsPanelRoot.ActualHeight;
FluidGridViewTriggerBase trigger = null;
foreach (var child in triggers)
{
if (child.MaybeActive(parentLength))
{
trigger = child;
}
}
if (trigger != null)
{
var maxLength = GetMaxLength(owner);
if (parentLength > maxLength && !double.IsNaN(maxLength))
{
parentLength = maxLength;
}
//var itemLength = trigger.GetItemLength(parentLength - paddingNear - paddingFar);
var itemLength = trigger.GetItemLength(Math.Floor(parentLength), out int maximumRowsOrColumns);
reference.MaximumRowsOrColumns = maximumRowsOrColumns;
if (reference.Orientation == Orientation.Horizontal)
{
reference.ItemWidth = itemLength;
}
else
{
reference.ItemHeight = itemLength;
}
var orientationOnly = GetOrientationOnly(owner);
if (!orientationOnly)
{
if (reference.Orientation == Orientation.Horizontal)
{
reference.ItemHeight = itemLength;
}
else
{
reference.ItemWidth = itemLength;
}
}
}
}