} = new List <UIElement>(); // holds the collection of text elements
public void DrawGrid(int firstHour, int hours)
{
foreach (var line in GridLines)
{
GraphCanvas.Children.Remove(line); // TODO Try block?
}
GridLines.Clear();
foreach (var location in LocationUiElements)
{
GraphCanvas.Children.Remove(location); // TODO try block?
}
LocationUiElements.Clear();
double margin = 0; // TODO remove this?
double width = GraphCanvas.Width - 2 * margin;
double height = GraphCanvas.Height - 2 * margin;
// vertical hours per 15 minutes, so divide by 96
// alt is per hour a grid line
double gridHeight = height / hours;
double gridWidth = width / LocationList.Count;
// Horizontal
for (int i = 0; i < hours + 1; i++)
{
var line = GetLine(margin);
line.X1 = 0;
line.X2 = width;
line.Y1 = i * gridHeight;
line.Y2 = line.Y1;
var hour = $"{i+firstHour:D2}:00";
GridLines.Add(line);
UIElement item = Text(line.X1 - 28, line.Y1 - 5, hour, GraphCanvasSettings.TextColor);
LocationUiElements.Add(item);
GraphCanvas.Children.Add(item);
GraphCanvas.Children.Add(line);
}
int j = 0;
foreach (var item in LocationList)
{
var line = GetLine(margin);
line.X1 = j * gridWidth;
line.X2 = line.X1;
line.Y1 = 0;
line.Y2 = height;
GridLines.Add(line);
UIElement locationUI = Text(line.X1, line.Y1 - 15, item, GraphCanvasSettings.TextColor);
GraphCanvas.Children.Add(locationUI);
GraphCanvas.Children.Add(line);
j++;
}
}
