protected override async void OnNavigatedTo(NavigationEventArgs e)
{
printHelper.register();
save_ink("blank.gif"); // create a blank file to create new pages later
Windows.Storage.StorageFolder storageFolder = Windows.Storage.ApplicationData.Current.LocalFolder;
IReadOnlyList <StorageFile> files =
Task.Run(async() =>
{
return(await storageFolder.GetFilesAsync());
}).GetAwaiter().GetResult();
List <Task> tasks = new List <Task>();
int numPages = 0;
foreach (var file in files)
{
// TODO should check that it starts with number and no missing pages (e.g. 0,1,3...)
if (file.Name.EndsWith(page_file_name))
{
int pageID = int.Parse(file.Name.Split('_')[0]);
InkPage ip = new InkPage(pageID);
// AsyncHelpers.RunSync(() => ip.loadAsync());
await ip.loadAsync();
pageBuffers.Add(pageID, ip);
numPages++;
}
}
if (pageBuffers.Count > 0)
{
// TODO not needed?
last_page = numPages - 1;
// load 0_Page.gif
// load_ink(cur_page.ToString() + page_file_name);
} // else last_page=0, which is the current blank page
else
{
pageBuffers.Add(0, new InkPage(0));
}
replaceCanvas(pageBuffers[0]);
}
