Temporary fix for iOS 13

@@ -3,6 +3,7 @@
 ## 2.1.7
 
 - Add iOS Direct Print
+- Fix iOS 13 bug
 
 ## 2.1.6
 

@@ -24,12 +24,17 @@ class PdfPrintPageRenderer: UIPrintPageRenderer {
     private var channel: FlutterMethodChannel?
     private var pdfDocument: CGPDFDocument?
     private var lock: NSLock?
+    private var mustLayout: Bool = true
 
-    init(_ channel: FlutterMethodChannel?) {
+    init(_ channel: FlutterMethodChannel?, data: Data?) {
         super.init()
         self.channel = channel
-        lock = NSLock()
         pdfDocument = nil
+        if data != nil {
+            setDocument(data)
+            mustLayout = false
+        }
+        lock = NSLock()
     }
 
     override func drawPage(at pageIndex: Int, in _: CGRect) {
@@ -72,10 +77,12 @@ class PdfPrintPageRenderer: UIPrintPageRenderer {
             "marginBottom": marginBottom,
         ]
 
+        if mustLayout {
             lock?.lock()
             channel?.invokeMethod("onLayout", arguments: arg)
             lock?.lock()
             lock?.unlock()
+        }
 
         let pages = pdfDocument?.numberOfPages ?? 0
 

@@ -39,7 +39,8 @@ public class SwiftPrintingPlugin: NSObject, FlutterPlugin, UIPrintInteractionCon
         let args = call.arguments! as! [String: Any]
         if call.method == "printPdf" {
             let name = args["name"] as? String ?? ""
-            printPdf(name)
+            let object = args["doc"] as? FlutterStandardTypedData
+            printPdf(name, data: object?.data)
             result(NSNumber(value: 1))
         } else if call.method == "directPrintPdf" {
             let name = args["name"] as? String ?? ""
@@ -49,7 +50,7 @@ public class SwiftPrintingPlugin: NSObject, FlutterPlugin, UIPrintInteractionCon
             result(NSNumber(value: 1))
         } else if call.method == "writePdf" {
             if let object = args["doc"] as? FlutterStandardTypedData {
-                writePdf(object)
+                writePdf(object.data)
             }
             result(NSNumber(value: 1))
         } else if call.method == "cancelJob" {
@@ -97,6 +98,11 @@ public class SwiftPrintingPlugin: NSObject, FlutterPlugin, UIPrintInteractionCon
                 width: CGFloat((args["w"] as? NSNumber)?.floatValue ?? 0.0),
                 height: CGFloat((args["h"] as? NSNumber)?.floatValue ?? 0.0)
             ))
+        } else if call.method == "printingInfo" {
+            let data: NSDictionary = [
+                "iosVersion": UIDevice.current.systemVersion,
+            ]
+            result(data)
         } else {
             result(FlutterMethodNotImplemented)
         }
@@ -150,7 +156,7 @@ public class SwiftPrintingPlugin: NSObject, FlutterPlugin, UIPrintInteractionCon
         controller.print(to: printer, completionHandler: completionHandler)
     }
 
-    func printPdf(_ name: String) {
+    func printPdf(_ name: String, data: Data?) {
         let printing = UIPrintInteractionController.isPrintingAvailable
         if !printing {
             let data: NSDictionary = [
@@ -168,13 +174,13 @@ public class SwiftPrintingPlugin: NSObject, FlutterPlugin, UIPrintInteractionCon
         printInfo.jobName = name
         printInfo.outputType = .general
         controller.printInfo = printInfo
-        renderer = PdfPrintPageRenderer(channel)
+        renderer = PdfPrintPageRenderer(channel, data: data)
         controller.printPageRenderer = renderer
         controller.present(animated: true, completionHandler: completionHandler)
     }
 
-    func writePdf(_ data: FlutterStandardTypedData) {
-        renderer?.setDocument(data.data)
+    func writePdf(_ data: Data) {
+        renderer?.setDocument(data)
     }
 
     func sharePdf(_ data: FlutterStandardTypedData, withSourceRect rect: CGRect, andName name: String?) {

@@ -96,15 +96,35 @@ mixin Printing {
   static Future<bool> layoutPdf({
     @required LayoutCallback onLayout,
     String name = 'Document',
+    PdfPageFormat format = PdfPageFormat.standard,
   }) async {
     _onCompleted = Completer<bool>();
     _onLayout = onLayout;
     _channel.setMethodCallHandler(_handleMethod);
     final Map<String, dynamic> params = <String, dynamic>{'name': name};
+    try {
+      final Map<dynamic, dynamic> info = await printingInfo();
+      if (int.parse(info['iosVersion'].toString().split('.').first) >= 13) {
+        final List<int> bytes = await onLayout(format);
+        if (bytes == null) {
+          return false;
+        }
+        params['doc'] = Uint8List.fromList(bytes);
+      }
+    } catch (e) {
+      e.toString();
+    }
     await _channel.invokeMethod<int>('printPdf', params);
     return _onCompleted.future;
   }
 
+  static Future<Map<dynamic, dynamic>> printingInfo() async {
+    return await _channel.invokeMethod<Map<dynamic, dynamic>>(
+      'printingInfo',
+      <String, dynamic>{},
+    );
+  }
+
   /// Opens the native printer picker interface, and returns the URL of the selected printer.
   static Future<Printer> pickPrinter({Rect bounds}) async {
     _channel.setMethodCallHandler(_handleMethod);
@@ -117,7 +137,6 @@ mixin Printing {
     };
     final Map<dynamic, dynamic> printer = await _channel
         .invokeMethod<Map<dynamic, dynamic>>('pickPrinter', params);
-    print(printer);
     if (printer == null) {
       return null;
     }
@@ -138,10 +157,11 @@ mixin Printing {
     @required Printer printer,
     @required LayoutCallback onLayout,
     String name = 'Document',
+    PdfPageFormat format = PdfPageFormat.standard,
   }) async {
     _onCompleted = Completer<bool>();
     _channel.setMethodCallHandler(_handleMethod);
-    final List<int> bytes = await onLayout(PdfPageFormat.standard);
+    final List<int> bytes = await onLayout(format);
     if (bytes == null) {
       return false;
     }