private static Brush GetBackgroundBrush(DiffMinimapItemState state)
{
if (state == DiffMinimapItemState.Null)
{
return(Application.Current.TryFindResource("DataGridGridLines") as Brush);
}
return(DiffBrushes.GetBackgroundBrush((DiffState)state));
}
private void ResetHorizontalMinimap(Grid grid, DataGridContext gridContext)
{
if (gridContext.VisibleColumns.Any() == false || gridContext.CurrentItem == null)
{
grid.Visibility = Visibility.Hidden;
return;
}
var diffState = DiffUtility.GetDiffState(gridContext.CurrentItem);
var fixedCount = (int)gridContext.GetValue(TableView.FixedColumnCountProperty);
var prevState = (int)DiffState.Unchanged;
var count = (double)0;
var list = new List <double>();
var states = new List <int>();
var fields = DiffUtility.GetDiffFields(gridContext.CurrentItem);
var totalWidth = (double)0;
var fixedSize = (double)0;
foreach (var item in gridContext.VisibleColumns)
{
var rowState = (int)diffState;
if (rowState == (int)DiffState.Modified)
{
rowState = fields.Contains(item.FieldName) == true ? (int)DiffState.Modified : (int)DiffState.Unchanged;
}
if (gridContext.CurrentItem is IDataErrorInfo errorInfo && errorInfo[item.FieldName] != string.Empty)
{
rowState |= (1 << 16);
}
if (item.Index < fixedCount)
{
fixedSize += item.ActualWidth;
}
if (rowState != prevState)
{
if (count != 0)
{
list.Add(count);
states.Add(prevState);
}
count = 0;
prevState = rowState;
}
else
{
}
count += item.ActualWidth;
totalWidth += item.ActualWidth;
}
list.Add(count);
states.Add(prevState);
grid.Children.Clear();
grid.ColumnDefinitions.Clear();
for (var i = 0; i < list.Count; i++)
{
var item = list[i];
var state = states[i] & 0x0000ffff;
var error = (states[i] & 0xffff0000) >> 16;
var brush = DiffBrushes.GetBackgroundBrush((DiffState)state);
var border = new Border()
{
BorderThickness = new Thickness(0, error != 0 ? 4 : 0, 0, 0), BorderBrush = Brushes.Red, Background = brush,
};
Grid.SetColumn(border, grid.ColumnDefinitions.Count);
grid.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = new GridLength(item / totalWidth, GridUnitType.Star),
});
grid.Children.Add(border);
}
grid.Visibility = Visibility.Visible;
}
