private void SetData()
{
_titles.Clear();
_values.Clear();
if (!string.IsNullOrEmpty(TitleMemberPath) && !string.IsNullOrEmpty(ValueMemberPath))
{
var titleEval = new BindingEvaluator(TitleMemberPath);
var valueEval = new BindingEvaluator(ValueMemberPath);
foreach (var dataItem in DataSource)
{
_titles.Add(titleEval.Eval(dataItem).ToString());
_values.Add((double)valueEval.Eval(dataItem));
if (dataItem is INotifyPropertyChanged)
{
(dataItem as INotifyPropertyChanged).PropertyChanged -= OnDataSourceItemPropertyChanged;
(dataItem as INotifyPropertyChanged).PropertyChanged += OnDataSourceItemPropertyChanged;
}
}
_total = _values.Sum();
}
}
void UpdateGrid()
{
if (_root == null || ItemsSource == null)
{
return;
}
_root.Children.Clear();
_root.ColumnDefinitions.Clear();
_independentValues.Clear();
_dependentValues.Clear();
BindingEvaluator independentBinding = new BindingEvaluator(IndependentValuePath);
BindingEvaluator dependentBinding = new BindingEvaluator(DependentValuePath);
int column = 0;
foreach (var item in ItemsSource)
{
var independentValue = independentBinding.Eval(item).ToString();
var dependentValue = (long)dependentBinding.Eval(item);
_dependentValues.Add(dependentValue);
_root.ColumnDefinitions.Add(new ColumnDefinition()
{
Width = new GridLength(1, GridUnitType.Star)
});
TextBlock independentTB = new TextBlock();
independentTB.Text = independentValue;
independentTB.FontSize = IndependentValueFontSize;
independentTB.Foreground = IndependentValueBrush;
independentTB.VerticalAlignment = VerticalAlignment.Center;
independentTB.HorizontalAlignment = HorizontalAlignment.Center;
independentTB.SetValue(Grid.RowProperty, 3);
independentTB.SetValue(Grid.ColumnProperty, column++);
_root.Children.Add(independentTB);
}
Rectangle rc = new Rectangle();
rc.Fill = GridLineBrush;
rc.Height = 1;
rc.SetValue(Grid.RowProperty, 1);
rc.SetValue(Grid.ColumnSpanProperty, column);
_root.Children.Add(rc);
var min = _dependentValues.Min();
var max = _dependentValues.Max();
long temp = 0;
if (min >= 0 && max >= 0)
{
temp = max;
}
else if (min < 0 && max >= 0)
{
temp = max - min;
}
else if (max < 0)
{
temp = -min;
}
var height = (this.ActualHeight - 1 - 30) / temp;
for (int i = 0; i < _dependentValues.Count; i++)
{
var dependentValue = _dependentValues[i];
TextBlock dependentTB = new TextBlock();
dependentTB.Text = dependentValue.ToString();
dependentTB.FontSize = DependentValueFontSize;
dependentTB.Foreground = dependentValue >= 0 ? PositiveValueBrush : NegativeValueBrush;
dependentTB.VerticalAlignment = dependentValue > 0 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
dependentTB.HorizontalAlignment = HorizontalAlignment.Center;
dependentTB.SetValue(Grid.RowProperty, dependentValue > 0 ? 2 : 0);
dependentTB.SetValue(Grid.ColumnProperty, i);
Rectangle dependentRC = new Rectangle();
dependentRC.Fill = dependentValue >= 0 ? PositiveValueBrush : NegativeValueBrush;
dependentRC.Height = Math.Abs(height * dependentValue);
dependentRC.Margin = new Thickness(20, 0, 20, 0);
dependentRC.VerticalAlignment = dependentValue <= 0 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
dependentRC.SetValue(Grid.RowProperty, dependentValue <= 0 ? 2 : 0);
dependentRC.SetValue(Grid.ColumnProperty, i);
_root.Children.Add(dependentRC);
_root.Children.Add(dependentTB);
}
}
void UpdateGrid()
{
if (_root == null || ItemsSource == null)
{
return;
}
_root.Children.Clear();
_root.ColumnDefinitions.Clear();
_independentValues.Clear();
_dependentValues.Clear();
BindingEvaluator independentBinding = new BindingEvaluator(IndependentValuePath);
BindingEvaluator dependentBinding = new BindingEvaluator(DependentValuePath);
int column = 0;
foreach (var item in ItemsSource)
{
var independentValue = independentBinding.Eval(item).ToString();
var dependentValue = (long)dependentBinding.Eval(item);
_dependentValues.Add(dependentValue);
_root.ColumnDefinitions.Add(new ColumnDefinition() { Width = new GridLength(1, GridUnitType.Star) });
TextBlock independentTB = new TextBlock();
independentTB.Text = independentValue;
independentTB.FontSize = IndependentValueFontSize;
independentTB.Foreground = IndependentValueBrush;
independentTB.VerticalAlignment = VerticalAlignment.Center;
independentTB.HorizontalAlignment = HorizontalAlignment.Center;
independentTB.SetValue(Grid.RowProperty, 3);
independentTB.SetValue(Grid.ColumnProperty, column++);
_root.Children.Add(independentTB);
}
Rectangle rc = new Rectangle();
rc.Fill = GridLineBrush;
rc.Height = 1;
rc.SetValue(Grid.RowProperty, 1);
rc.SetValue(Grid.ColumnSpanProperty, column);
_root.Children.Add(rc);
var min = _dependentValues.Min();
var max = _dependentValues.Max();
long temp = 0;
if (min >= 0 && max >= 0)
{
temp = max;
}
else if (min < 0 && max >= 0)
{
temp = max - min;
}
else if (max < 0)
{
temp = -min;
}
var height = (this.ActualHeight - 1 - 30) / temp;
for (int i = 0; i < _dependentValues.Count; i++)
{
var dependentValue = _dependentValues[i];
TextBlock dependentTB = new TextBlock();
dependentTB.Text = dependentValue.ToString();
dependentTB.FontSize = DependentValueFontSize;
dependentTB.Foreground = dependentValue >= 0 ? PositiveValueBrush : NegativeValueBrush;
dependentTB.VerticalAlignment = dependentValue > 0 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
dependentTB.HorizontalAlignment = HorizontalAlignment.Center;
dependentTB.SetValue(Grid.RowProperty, dependentValue > 0 ? 2 : 0);
dependentTB.SetValue(Grid.ColumnProperty, i);
Rectangle dependentRC = new Rectangle();
dependentRC.Fill = dependentValue >= 0 ? PositiveValueBrush : NegativeValueBrush;
dependentRC.Height = Math.Abs(height * dependentValue);
dependentRC.Margin = new Thickness(20, 0, 20, 0);
dependentRC.VerticalAlignment = dependentValue <= 0 ? VerticalAlignment.Top : VerticalAlignment.Bottom;
dependentRC.SetValue(Grid.RowProperty, dependentValue <= 0 ? 2 : 0);
dependentRC.SetValue(Grid.ColumnProperty, i);
_root.Children.Add(dependentRC);
_root.Children.Add(dependentTB);
}
}
