private void Draw()
{
_dataGrid.CollectionChanged -= dataGrid_CollectionChanged;
_dataGrid.Clear();
// get colour scheme values from combobox selections
ComboBoxItem nDataClassesSelection = numDataClassesComboBox.SelectedItem as ComboBoxItem;
int nDataClasses = int.Parse(nDataClassesSelection.Content.ToString());
byte[][] defaultColourScheme = _colourScheme.GetRGBColours(colourSchemeComboBox.SelectedItem.ToString(), nDataClasses);
for (int i = 0; i < _datasetModel.Dataset.Count; i++)
{
string[] row = _datasetModel.Dataset[i];
ListViewItem item = BuildRowStructure(_cellWidth, row[_idIndex]);
Grid rowGrid = item.Content as Grid;
for (int j = 0; j < this.Columns.Length; j++)
{
int currentColumn = _columnIndexes[j];
string columnTitle = _datasetModel.ColumnHeadings[currentColumn];
// get max and min for the column
double[] minMax = _datasetModel.GetAxisMinMaxValues(columnTitle);
double min = minMax[0];
double max = minMax[1];
double cellValue = double.Parse(row[currentColumn]);
double linearTransform = (cellValue - min) / (max - min) * (nDataClasses - 1);
int colourIndex = (int)Math.Truncate(linearTransform);
byte[] colourRGB = defaultColourScheme[colourIndex];
Rectangle cell = new Rectangle();
cell.Stroke = new SolidColorBrush(Colors.LightGray);
cell.StrokeThickness = 1;
cell.Fill = new SolidColorBrush(Color.FromArgb(255, colourRGB[0], colourRGB[1], colourRGB[2]));
ToolTip tt = new ToolTip();
tt.Content = row[currentColumn];
tt.Placement = Windows.UI.Xaml.Controls.Primitives.PlacementMode.Mouse;
ToolTipService.SetToolTip(cell, tt);
rowGrid.Children.Add(cell);
// add to column + 1 to account for the row title
Grid.SetColumn(cell, j + 1);
}
_dataGrid.Add(item);
}
_dataGrid.CollectionChanged += dataGrid_CollectionChanged;
dataListView.ItemsSource = _dataGrid;
// check for filtered items
if (_filteredItems.Count > 0)
{
Filter();
}
}
private void AddRangeSliders()
{
_rangeSliders.Clear();
for (int i = 0; i < this.Axes.Length; i++)
{
RangeSlider rangeSlider = new RangeSlider();
rangeSlider.Height = _canvasHeight;
rangeSlider.Width = RANGE_SLIDER_WIDTH;
Canvas.SetTop(rangeSlider, 0.0);
// Centralise positions
if (i == 0)
{
Canvas.SetLeft(rangeSlider, 0.0);
}
else if (i == this.Axes.Length - 1)
{
Canvas.SetLeft(rangeSlider, (i * _xSeparation) - rangeSlider.Width);
}
else
{
Canvas.SetLeft(rangeSlider, (i * _xSeparation) - (rangeSlider.Width / 2));
}
int index = _axesIndexes[i];
string axisName = _datasetModel.ColumnHeadings[index];
double[] minMax = _datasetModel.GetAxisMinMaxValues(axisName);
rangeSlider.Max = minMax[1];
rangeSlider.Min = minMax[0];
rangeSlider.UpperValueChangedEvent += rangeSlider_UpperValueChangedEvent;
rangeSlider.LowerValueChangedEvent += rangeSlider_LowerValueChangedEvent;
_rangeSliders.Add(rangeSlider);
canvas.Children.Add(rangeSlider);
}
}