feat: enable usage of printer's settings

@@ -65,6 +65,7 @@ abstract class PrintingPlatform extends PlatformInterface {
     String name,
     PdfPageFormat format,
     bool dynamicLayout,
+    bool usePrinterSettings,
   );
 
   /// Enumerate the available printers on the system.

@@ -171,6 +171,7 @@ class MethodChannelPrinting extends PrintingPlatform {
     String name,
     PdfPageFormat format,
     bool dynamicLayout,
+    bool usePrinterSettings,
   ) async {
     final job = _printJobs.add(
       onCompleted: Completer<bool>(),
@@ -188,6 +189,7 @@ class MethodChannelPrinting extends PrintingPlatform {
       'marginRight': format.marginRight,
       'marginBottom': format.marginBottom,
       'dynamic': dynamicLayout,
+      'usePrinterSettings': usePrinterSettings,
     };
 
     await _channel.invokeMethod<int>('printPdf', params);

@@ -35,11 +35,16 @@ mixin Printing {
   /// returns a future with a `bool` set to true if the document is printed
   /// and false if it is canceled.
   /// throws an exception in case of error
+  ///
+  /// Set [usePrinterSettings] to true to use the configuration defined by
+  /// the printer. May not work for all the printers and can depend on the
+  /// drivers. (Supported platforms: Windows)
   static Future<bool> layoutPdf({
     required LayoutCallback onLayout,
     String name = 'Document',
     PdfPageFormat format = PdfPageFormat.standard,
     bool dynamicLayout = true,
+    bool usePrinterSettings = false,
   }) {
     return PrintingPlatform.instance.layoutPdf(
       null,
@@ -47,6 +52,7 @@ mixin Printing {
       name,
       format,
       dynamicLayout,
+      usePrinterSettings,
     );
   }
 
@@ -118,12 +124,17 @@ mixin Printing {
   ///
   /// This is not supported on all platforms. Check the result of [info] to
   /// find at runtime if this feature is available or not.
+  ///
+  /// Set [usePrinterSettings] to true to use the configuration defined by
+  /// the printer. May not work for all the printers and can depend on the
+  /// drivers. (Supported platforms: Windows)
   static FutureOr<bool> directPrintPdf({
     required Printer printer,
     required LayoutCallback onLayout,
     String name = 'Document',
     PdfPageFormat format = PdfPageFormat.standard,
     bool dynamicLayout = true,
+    bool usePrinterSettings = false,
   }) {
     return PrintingPlatform.instance.layoutPdf(
       printer,
@@ -131,6 +142,7 @@ mixin Printing {
       name,
       format,
       dynamicLayout,
+      usePrinterSettings,
     );
   }
 

@@ -76,23 +76,30 @@ PrintJob::PrintJob(Printing* printing, int index)
 bool PrintJob::printPdf(std::string name,
                         std::string printer,
                         double width,
-                        double height) {
+                        double height,
+                        bool usePrinterSettings) {
   documentName = name;
 
-  auto dm = static_cast<DEVMODE*>(GlobalAlloc(0, sizeof(DEVMODE)));
-  ZeroMemory(dm, sizeof(DEVMODE));
-  dm->dmSize = sizeof(DEVMODE);
-  dm->dmFields = DM_ORIENTATION | DM_PAPERSIZE | DM_PAPERLENGTH | DM_PAPERWIDTH;
-  dm->dmPaperSize = 0;
-  if (width > height) {
-    dm->dmOrientation = DMORIENT_LANDSCAPE;
-    dm->dmPaperWidth = static_cast<short>(round(height * 254 / 72));
-    dm->dmPaperLength = static_cast<short>(round(width * 254 / 72));
+  auto dm;
+  if (usePrinterSettings){
+    dm = NULL; // to use default driver config
   } else {
-    dm->dmOrientation = DMORIENT_PORTRAIT;
-    dm->dmPaperWidth = static_cast<short>(round(width * 254 / 72));
-    dm->dmPaperLength = static_cast<short>(round(height * 254 / 72));
+    dm = static_cast<DEVMODE*>(GlobalAlloc(0, sizeof(DEVMODE)));
+    ZeroMemory(dm, sizeof(DEVMODE));
+    dm->dmSize = sizeof(DEVMODE);
+    dm->dmFields = DM_ORIENTATION | DM_PAPERSIZE | DM_PAPERLENGTH | DM_PAPERWIDTH;
+    dm->dmPaperSize = 0;
+    if (width > height) {
+      dm->dmOrientation = DMORIENT_LANDSCAPE;
+      dm->dmPaperWidth = static_cast<short>(round(height * 254 / 72));
+      dm->dmPaperLength = static_cast<short>(round(width * 254 / 72));
+    } else {
+      dm->dmOrientation = DMORIENT_PORTRAIT;
+      dm->dmPaperWidth = static_cast<short>(round(width * 254 / 72));
+      dm->dmPaperLength = static_cast<short>(round(height * 254 / 72));
+    }
   }
+  
 
   if (printer.empty()) {
     PRINTDLG pd;

@@ -74,7 +74,8 @@ class PrintJob {
   bool printPdf(std::string name,
                 std::string printer,
                 double width,
-                double height);
+                double height,
+                bool usePrinterSettings);
 
   void writeJob(std::vector<uint8_t> data);
 

@@ -78,10 +78,12 @@ class PrintingPlugin : public flutter::Plugin {
           arguments->find(flutter::EncodableValue("width"))->second);
       auto height = std::get<double>(
           arguments->find(flutter::EncodableValue("height"))->second);
+      auto usePrinterSettings = std::get<bool>(
+        arguments->find(flutter::EncodableValue("usePrinterSettings"))->second);
       auto vJob = arguments->find(flutter::EncodableValue("job"));
       auto jobNum = vJob != arguments->end() ? std::get<int>(vJob->second) : -1;
       auto job = new PrintJob{&printing, jobNum};
-      auto res = job->printPdf(name, printer, width, height);
+      auto res = job->printPdf(name, printer, width, height, usePrinterSettings);
       if (!res) {
         delete job;
       }