// Token: 0x06006109 RID: 24841 RVA: 0x001B3754 File Offset: 0x001B1954
private bool MeasureGeneratedItems(bool asNeededPass, Size constraint, bool horizontal, double maxExtent, ref Size panelDesiredSize, out double overflowExtent)
{
ToolBarOverflowPanel toolBarOverflowPanel = this.ToolBarOverflowPanel;
bool flag = false;
bool result = false;
bool flag2 = false;
overflowExtent = 0.0;
UIElementCollection internalChildren = base.InternalChildren;
int num = internalChildren.Count;
int num2 = 0;
for (int i = 0; i < this._generatedItemsCollection.Count; i++)
{
UIElement uielement = this._generatedItemsCollection[i];
OverflowMode overflowMode = ToolBar.GetOverflowMode(uielement);
bool flag3 = overflowMode == OverflowMode.AsNeeded;
if (flag3 == asNeededPass)
{
DependencyObject parent = VisualTreeHelper.GetParent(uielement);
if (overflowMode != OverflowMode.Always && !flag)
{
ToolBar.SetIsOverflowItem(uielement, BooleanBoxes.FalseBox);
uielement.Measure(constraint);
Size desiredSize = uielement.DesiredSize;
if (flag3)
{
double value;
if (horizontal)
{
value = desiredSize.Width + panelDesiredSize.Width;
}
else
{
value = desiredSize.Height + panelDesiredSize.Height;
}
if (DoubleUtil.GreaterThan(value, maxExtent))
{
flag = true;
}
}
if (!flag)
{
if (horizontal)
{
panelDesiredSize.Width += desiredSize.Width;
panelDesiredSize.Height = Math.Max(panelDesiredSize.Height, desiredSize.Height);
}
else
{
panelDesiredSize.Width = Math.Max(panelDesiredSize.Width, desiredSize.Width);
panelDesiredSize.Height += desiredSize.Height;
}
if (parent != this)
{
if (parent == toolBarOverflowPanel && toolBarOverflowPanel != null)
{
toolBarOverflowPanel.Children.Remove(uielement);
}
if (num2 < num)
{
internalChildren.InsertInternal(num2, uielement);
}
else
{
internalChildren.AddInternal(uielement);
}
num++;
}
num2++;
}
}
if (overflowMode == OverflowMode.Always || flag)
{
result = true;
if (uielement.MeasureDirty)
{
ToolBar.SetIsOverflowItem(uielement, BooleanBoxes.FalseBox);
uielement.Measure(constraint);
}
Size desiredSize2 = uielement.DesiredSize;
if (horizontal)
{
overflowExtent += desiredSize2.Width;
panelDesiredSize.Height = Math.Max(panelDesiredSize.Height, desiredSize2.Height);
}
else
{
overflowExtent += desiredSize2.Height;
panelDesiredSize.Width = Math.Max(panelDesiredSize.Width, desiredSize2.Width);
}
ToolBar.SetIsOverflowItem(uielement, BooleanBoxes.TrueBox);
if (parent == this)
{
internalChildren.RemoveNoVerify(uielement);
num--;
flag2 = true;
}
else if (parent == null)
{
flag2 = true;
}
}
}
else if (num2 < num && internalChildren[num2] == uielement)
{
num2++;
}
}
if (flag2 && toolBarOverflowPanel != null)
{
toolBarOverflowPanel.InvalidateMeasure();
}
return(result);
}
private bool MeasureGeneratedItems(bool asNeededPass, Size constraint, bool horizontal, double maxExtent, ref Size panelDesiredSize, out double overflowExtent)
{
ToolBarOverflowPanel overflowPanel = ToolBarOverflowPanel;
bool sendToOverflow = false; // Becomes true when the first AsNeeded does not fit
bool hasOverflowItems = false;
bool overflowNeedsInvalidation = false;
overflowExtent = 0.0;
UIElementCollection children = InternalChildren;
int childrenCount = children.Count;
int childrenIndex = 0;
for (int i = 0; i < _generatedItemsCollection.Count; i++)
{
UIElement child = _generatedItemsCollection[i];
OverflowMode overflowMode = ToolBar.GetOverflowMode(child);
bool asNeededMode = overflowMode == OverflowMode.AsNeeded;
// MeasureGeneratedItems is called twice to do a complete measure.
// The first pass measures Always and Never items -- items that
// are guaranteed to be or not to be in the overflow menu.
// The second pass measures AsNeeded items and determines whether
// there is enough room for them in the main bar or if they should
// be placed in the overflow menu.
// Check here whether the overflow mode matches a mode we should be
// examining in this pass.
if (asNeededMode == asNeededPass)
{
DependencyObject visualParent = VisualTreeHelper.GetParent(child);
// In non-Always overflow modes, measure for main bar placement.
if ((overflowMode != OverflowMode.Always) && !sendToOverflow)
{
// Children may change their size depending on whether they are in the overflow
// menu or not. Ensure that when we measure, we are using the main bar size.
// If the item goes to overflow, this property will be updated later in this loop
// when it is removed from the visual tree.
ToolBar.SetIsOverflowItem(child, BooleanBoxes.FalseBox);
child.Measure(constraint);
Size childDesiredSize = child.DesiredSize;
// If the child is an AsNeeded, check if it fits. If it doesn't then
// this child and all subsequent AsNeeded children should be sent
// to the overflow menu.
if (asNeededMode)
{
double newExtent;
if (horizontal)
{
newExtent = childDesiredSize.Width + panelDesiredSize.Width;
}
else
{
newExtent = childDesiredSize.Height + panelDesiredSize.Height;
}
if (DoubleUtil.GreaterThan(newExtent, maxExtent))
{
// It doesn't fit, send to overflow
sendToOverflow = true;
}
}
// The child has been validated as belonging in the main bar.
// Update the panel desired size dimensions, and ensure the child
// is in the main bar's visual tree.
if (!sendToOverflow)
{
if (horizontal)
{
panelDesiredSize.Width += childDesiredSize.Width;
panelDesiredSize.Height = Math.Max(panelDesiredSize.Height, childDesiredSize.Height);
}
else
{
panelDesiredSize.Width = Math.Max(panelDesiredSize.Width, childDesiredSize.Width);
panelDesiredSize.Height += childDesiredSize.Height;
}
if (visualParent != this)
{
if ((visualParent == overflowPanel) && (overflowPanel != null))
{
overflowPanel.Children.Remove(child);
}
if (childrenIndex < childrenCount)
{
children.InsertInternal(childrenIndex, child);
}
else
{
children.AddInternal(child);
}
childrenCount++;
}
Debug.Assert(children[childrenIndex] == child, "InternalChildren is out of sync with _generatedItemsCollection.");
childrenIndex++;
}
}
// The child should go to the overflow menu
if ((overflowMode == OverflowMode.Always) || sendToOverflow)
{
hasOverflowItems = true;
// If a child is in the overflow menu, we don't want to keep measuring.
// However, we need to calculate the MaxLength as well as set the desired height
// correctly. Thus, we will use the DesiredSize of the child. There is a problem
// that can occur if the child changes size while in the overflow menu and
// was recently displayed. It will be measure clean, yet its DesiredSize
// will not be accurate for the MaxLength calculation.
if (child.MeasureDirty)
{
// Set this temporarily in case the size is different while in the overflow area
ToolBar.SetIsOverflowItem(child, BooleanBoxes.FalseBox);
child.Measure(constraint);
}
// Even when in the overflow, we need two pieces of information:
// 1. We need to continue to track the maximum size of the non-logical direction
// (i.e. height in horizontal bars). This way, ToolBars with everything in
// the overflow will still have some height.
// 2. We want to track how much of the space we saved by placing the child in
// the overflow menu. This is used to calculate MinLength and MaxLength.
Size childDesiredSize = child.DesiredSize;
if (horizontal)
{
overflowExtent += childDesiredSize.Width;
panelDesiredSize.Height = Math.Max(panelDesiredSize.Height, childDesiredSize.Height);
}
else
{
overflowExtent += childDesiredSize.Height;
panelDesiredSize.Width = Math.Max(panelDesiredSize.Width, childDesiredSize.Width);
}
// Set the flag to indicate that the child is in the overflow menu
ToolBar.SetIsOverflowItem(child, BooleanBoxes.TrueBox);
// If the child is in this panel's visual tree, remove it.
if (visualParent == this)
{
Debug.Assert(children[childrenIndex] == child, "InternalChildren is out of sync with _generatedItemsCollection.");
children.RemoveNoVerify(child);
childrenCount--;
overflowNeedsInvalidation = true;
}
// If the child isnt connected to the visual tree, notify the overflow panel to pick it up.
else if (visualParent == null)
{
overflowNeedsInvalidation = true;
}
}
}
else
{
// We are not measure this child in this pass. Update the index into the
// visual children collection.
if ((childrenIndex < childrenCount) && (children[childrenIndex] == child))
{
childrenIndex++;
}
}
}
// A child was added to the overflow panel, but since we don't add it
// to the overflow panel's visual collection until that panel's measure
// pass, we need to mark it as measure dirty.
if (overflowNeedsInvalidation && (overflowPanel != null))
{
overflowPanel.InvalidateMeasure();
}
return(hasOverflowItems);
}