/// <summary>
/// Update guidelines
/// </summary>
/// <returns></returns>
private async Task UpdateLines()
{
double cellWidth = DesignerCanvas.GridCellWidth;
double w = ModelDesignerCanvas.Width;
double h = ModelDesignerCanvas.Height;
//For progress dialog glitch-free opening
await Task.Delay(500);
var geometry = await Task.Run(() => DesignerCanvas.CreateGridWithStreamGeometry(h, w, cellWidth));
ModelDesignerCanvas.RefreshGuideLines(geometry);
}
/// <summary>
/// Dimensions changed
/// </summary>
/// <returns></returns>
public async Task CanvasDimensionsChanged()
{
var settings = new MetroDialogSettings()
{
AnimateHide = true,
AnimateShow = false
};
var parent = VisualTreeHelperEx.FindAncestorByType <MetroWindow>(this);
var progressController = await parent.ShowProgressAsync("Please wait...", "Guidelines are updating", false, settings);
await UpdateLines();
await progressController.CloseAsync();
StreamGeometry geometry = DesignerCanvas.CreateGridWithStreamGeometry(ViewModel.CanvasHeight, ViewModel.CanvasWidth,
DesignerCanvas.GridCellWidth);
ModelDesignerCanvas.RefreshGuideLines(geometry);
ViewModel.OnComputedPropertyChanged();
}