private void PlaceRow(MosaicRow row, Rect targetRect)
{
double prevX = targetRect.X;
foreach (var item in row.Items)
{
PlaceItem(item, new Rect(prevX, targetRect.Y, item.ComputedSize.Width, item.ComputedSize.Height));
prevX += item.ComputedSize.Width;
}
row.Location = new Point(targetRect.X, targetRect.Y);
}
private void LayoutImages()
{
if (_items.Count == 0)
return;
var currentRow = new MosaicRow() {Size = new Size(ActualWidth, 0)};
_rows.Add(currentRow);
double prevX = 0;
double prevY = 0;
foreach (var item in _items)
{
currentRow.Items.Add(item);
//resize item to MaxImageSize if necessary and set ComputedSize
MeasureItem(item);
//set row height from the first image in the row
if (currentRow.Size.Height == 0)
{
currentRow.Size = new Size(currentRow.Size.Width, item.ComputedSize.Height);
currentRow.DesiredSize = currentRow.Size;
}
else
{
//resize all other items in row to the row height
FitToRow(item, currentRow.Size.Height);
}
//calculate current item location
var itemRect = ComputeItemLocation(item, new Rect(prevX, currentRow.Location.Y, currentRow.Size.Width, currentRow.Size.Height));
currentRow.DesiredSize = new Size(itemRect.Right, currentRow.DesiredSize.Height);
if (itemRect.Right > currentRow.Size.Width)
{
//LINE BREAK
prevX = 0;
prevY += currentRow.Size.Height;
currentRow = new MosaicRow() { Location = new Point(0, prevY), Size = new Size(ActualWidth, 0) };
_rows.Add(currentRow);
}
else
{
prevX += itemRect.Width;
}
//place item at specified location and set ComputedLocation
PlaceItem(item, itemRect);
}
if (currentRow.Items.Count == 0)
_rows.Remove(currentRow);
Height = currentRow.Location.Y + currentRow.Size.Height;
}