protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
CanvasElements canvasElements = new CanvasElements
(canvas, toolbar, commandBar, openHamburger, closeHamburger);
if (e.Parameter is GroupsContent)
{
GroupsContent content = (GroupsContent)e.Parameter;
// load group's stroke container
canvas.InkPresenter.StrokeContainer = content.strokes;
this.viewModel = new CanvasPageViewModel(canvasElements, content);
this.DataContext = viewModel;
// set the background image if there is one
if (content.backgroundPath != null)
{
viewModel.setBackgroundImage(content.backgroundPath);
}
else if (content.imageContainer != null)
{
ImageContainer ic = content.imageContainer;
viewModel.imageFilePath = ic.imagePath;
viewModel.ImageBitmap = ic.image;
viewModel.xOffset = ic.xOffset;
viewModel.yOffset = ic.yOffset;
viewModel.newWidth = ic.newWidth;
viewModel.newHeight = ic.newHeight;
}
}
}
/// <summary>
/// Determines if a group was updated based on the members in the group or the name of the group
/// </summary>
/// <param name="newGroup">Group to compare to</param>
/// <return>True if the group members are different</return>
public bool isUpdated(GroupsContent newGroup)
{
// check for matching ids, then check if the group members have changed
if (group.id == newGroup.group.id &&
groupMembers == newGroup.groupMembers &&
group.Name == newGroup.group.Name)
{
return(false);
}
return(true);
}
// updates the canvas portion of the groups content
public void updateCanvasFrom(GroupsContent gc)
{
strokes = gc.strokes;
backgroundPath = gc.backgroundPath;
imageContainer = gc.imageContainer;
}