protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
Shell.Current.RegisterNewCommand("Export & Save", async(sender, args) =>
{
if (_infiniteCanvas != null)
{
var savePicker = new Windows.Storage.Pickers.FileSavePicker
{
SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.DocumentsLibrary
};
savePicker.FileTypeChoices.Add("application/json", new List <string> {
".json"
});
savePicker.SuggestedFileName = "Infinite Canvas Export";
StorageFile file = await savePicker.PickSaveFileAsync();
if (file != null)
{
var json = _infiniteCanvas.ExportAsJson();
CachedFileManager.DeferUpdates(file);
await FileIO.WriteTextAsync(file, json);
}
}
});
Shell.Current.RegisterNewCommand("Import and Load", async(sender, args) =>
{
if (_infiniteCanvas != null)
{
var picker = new Windows.Storage.Pickers.FileOpenPicker
{
ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail,
SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.DocumentsLibrary
};
picker.FileTypeFilter.Add(".json");
var file = await picker.PickSingleFileAsync();
if (file != null)
{
try
{
var json = await FileIO.ReadTextAsync(file);
_infiniteCanvas.ImportFromJson(json);
}
catch
{
var dialog = new MessageDialog("Invalid File");
await dialog.ShowAsync();
}
}
}
});
}
private void Load()
{
SampleController.Current.RegisterNewCommand("Export & Save", async(sender, args) =>
{
if (_infiniteCanvas != null)
{
var savePicker = new FileSavePicker
{
SuggestedStartLocation = PickerLocationId.DocumentsLibrary
};
savePicker.FileTypeChoices.Add("application/json", new List <string> {
".json"
});
savePicker.SuggestedFileName = "Infinite Canvas Export";
var file = await savePicker.PickSaveFileAsync();
if (file != null)
{
var json = _infiniteCanvas.ExportAsJson();
CachedFileManager.DeferUpdates(file);
await FileIO.WriteTextAsync(file, json);
}
}
});
SampleController.Current.RegisterNewCommand("Import and Load", async(sender, args) =>
{
if (_infiniteCanvas != null)
{
var picker = new FileOpenPicker
{
ViewMode = PickerViewMode.Thumbnail,
SuggestedStartLocation = PickerLocationId.DocumentsLibrary
};
picker.FileTypeFilter.Add(".json");
var file = await picker.PickSingleFileAsync();
if (file != null)
{
try
{
var json = await FileIO.ReadTextAsync(file);
_infiniteCanvas.ImportFromJson(json);
}
catch
{
var dialog = new MessageDialog("Invalid File");
await dialog.ShowAsync();
}
}
}
});
SampleController.Current.RegisterNewCommand("Export max view as image", async(sender, args) =>
{
if (_infiniteCanvas != null)
{
var savePicker = new FileSavePicker
{
SuggestedStartLocation = PickerLocationId.PicturesLibrary,
SuggestedFileName = "Infinite Canvas Max View",
FileTypeChoices =
{
{ "PNG Picture", new List <string> {
".png"
} },
{ "JPEG Picture", new List <string> {
".jpg"
} }
}
};
var imageFile = await savePicker.PickSaveFileAsync();
if (imageFile != null)
{
BitmapFileFormat bitmapFileFormat;
switch (imageFile.FileType.ToLower())
{
case ".png":
bitmapFileFormat = BitmapFileFormat.Png;
break;
case ".jpg":
bitmapFileFormat = BitmapFileFormat.Jpeg;
break;
default:
bitmapFileFormat = BitmapFileFormat.Png;
break;
}
using (var fileStream = await imageFile.OpenAsync(FileAccessMode.ReadWrite, StorageOpenOptions.None))
{
await _infiniteCanvas.SaveBitmapAsync(fileStream, bitmapFileFormat);
}
}
}
});
}