/// <summary>
/// Updates the bounds of child elements when flow is to Left.
/// </summary>
private void UpdateRegionsFlowsToLeft(Graphics g, RibbonElementSizeMode mode)
{
int curRight = ContentBounds.Left + Owner.ItemPadding.Horizontal + 0;
int curBottom = ContentBounds.Top + Owner.ItemPadding.Vertical + 0;
int lastRight = curRight;
int lastBottom = 0;
List <RibbonItem> lastColumn = new List <RibbonItem>();
///Iterate thru items on panel
for (int i = Items.Count - 1; i >= 0; i--)
{
RibbonItem item = Items[i];
///Gets the last measured size (to avoid re-measuring calculations)
Size itemSize;
if (item.Visible)
{
itemSize = item.LastMeasuredSize;
}
else
{
itemSize = new Size(0, 0);
}
///If not enough space available, reset curBottom and advance curRight
if (curBottom + itemSize.Height > ContentBounds.Bottom)
{
curBottom = ContentBounds.Top + Owner.ItemPadding.Vertical + 0;
curRight = lastRight + Owner.ItemPadding.Horizontal + 0;
Items.CenterItemsVerticallyInto(lastColumn, ContentBounds);
lastColumn.Clear();
}
///Set the item's bounds
item.SetBounds(new Rectangle(curRight, curBottom, itemSize.Width, itemSize.Height));
///save last right and bottom
lastRight = Math.Max(item.Bounds.Right, lastRight);
lastBottom = item.Bounds.Bottom;
///update current bottom
curBottom = item.Bounds.Bottom + Owner.ItemPadding.Vertical + 1;
///Add to the collection of items of the last column
lastColumn.Add(item);
}
///Center the items vertically on the last column
Items.CenterItemsVerticallyInto(lastColumn, Items.GetItemsBounds());
}
/// <summary>
/// Updates the bounds of child elements when flow is to bottom
/// </summary>
private void UpdateRegionsFlowsToRight(Graphics g, RibbonElementSizeMode mode)
{
int curLeft = ContentBounds.Left;
int curTop = ContentBounds.Top;
int padding = mode == RibbonElementSizeMode.Medium ? 7 : 0;
int maxBottom = 0;
#region Sorts from larger to smaller
RibbonItem[] array = Items.ToArray();
for (int i = (array.Length - 1); i >= 0; i--)
{
for (int j = 1; j <= i; j++)
{
if (array[j - 1].LastMeasuredSize.Width < array[j].LastMeasuredSize.Width)
{
RibbonItem temp = array[j - 1];
array[j - 1] = array[j];
array[j] = temp;
}
}
}
#endregion
List <RibbonItem> list = new List <RibbonItem>(array);
///Attend elements, deleting every attended element from the list
while (list.Count > 0)
{
///Extract item and delete it
RibbonItem item = list[0];
list.Remove(item);
///If not enough space left, reset left and advance top
if (curLeft + item.LastMeasuredSize.Width > ContentBounds.Right)
{
curLeft = ContentBounds.Left;
curTop = maxBottom + Owner.ItemPadding.Vertical + 1 + padding;
}
///Set item's bounds
item.SetBounds(new Rectangle(new Point(curLeft, curTop), item.LastMeasuredSize));
///Increment reminders
curLeft += item.Bounds.Width + Owner.ItemPadding.Horizontal;
maxBottom = Math.Max(maxBottom, item.Bounds.Bottom);
///Check available space after placing item
int spaceAvailable = ContentBounds.Right - curLeft;
///Check for elements that fit on available space
for (int i = 0; i < list.Count; i++)
{
///If item fits on the available space
if (list[i].LastMeasuredSize.Width < spaceAvailable)
{
///Place the item there and reset the counter to check for further items
list[i].SetBounds(new Rectangle(new Point(curLeft, curTop), list[i].LastMeasuredSize));
curLeft += list[i].Bounds.Width + Owner.ItemPadding.Horizontal;
maxBottom = Math.Max(maxBottom, list[i].Bounds.Bottom);
spaceAvailable = ContentBounds.Right - curLeft;
list.RemoveAt(i);
i = 0;
}
}
}
}