image method support single density (TM-U220)

lib/src/commands.dart

@@ -66,3 +66,6 @@ const cCashDrawerPin5 = '${esc}p130';
 
 // QR Code
 const cQrHeader = '$gs(k';
+
+//Print control mode
+const cControlHeader = '$gs(K';

lib/src/generator.dart

@@ -22,9 +22,11 @@ class Generator {
   final PaperSize _paperSize;
   CapabilityProfile _profile;
   int? _maxCharsPerLine;
+
   // Global styles
   String? _codeTable;
   PosFontType? _font;
+
   // Current styles
   PosStyles _styles = PosStyles();
   int spaceBetweenRows;
@@ -144,7 +146,8 @@ class Generator {
     final int heightPx = image.height;
 
     // Create a black bottom layer
-    final biggerImage = copyResize(image, width: widthPx, height: heightPx);
+    final biggerImage = copyResize(image,
+        width: widthPx, height: heightPx, interpolation: Interpolation.linear);
     fill(biggerImage, 0);
     // Insert source image into bigger one
     drawImage(biggerImage, image, dstX: 0, dstY: 0);
@@ -217,6 +220,7 @@ class Generator {
     return ((0xFFFFFFFF ^ (0x1 << shift)) & uint32) |
         ((newValue ? 1 : 0) << shift);
   }
+
   // ************************ (end) Internal helpers  ************************
 
   //**************************** Public command generators ************************
@@ -567,20 +571,32 @@ class Generator {
   /// Print an image using (ESC *) command
   ///
   /// [image] is an instanse of class from [Image library](https://pub.dev/packages/image)
-  List<int> image(Image imgSrc, {PosAlign align = PosAlign.center}) {
+  List<int> image(Image imgSrc,
+      {PosAlign align = PosAlign.center, bool isDoubleDensity = true}) {
     List<int> bytes = [];
     // Image alignment
     bytes += setStyles(PosStyles().copyWith(align: align));
 
-    final Image image = Image.from(imgSrc); // make a copy
-    const bool highDensityHorizontal = true;
-    const bool highDensityVertical = true;
+    Image image;
+    if (!isDoubleDensity) {
+      int size = 558 ~/ 2;
+      if (_paperSize == PaperSize.mm58) {
+        size = 375 ~/ 2;
+      }
+      image =
+          copyResize(imgSrc, width: size, interpolation: Interpolation.linear);
+    } else {
+      image = Image.from(imgSrc); // make a copy
+    }
+    bool highDensityHorizontal = isDoubleDensity;
+    bool highDensityVertical = isDoubleDensity;
 
     invert(image);
     flip(image, Flip.horizontal);
     final Image imageRotated = copyRotate(image, 270);
 
-    const int lineHeight = highDensityVertical ? 3 : 1;
+    int lineHeight = highDensityVertical ? 3 : 1;
+
     final List<List<int>> blobs = _toColumnFormat(imageRotated, lineHeight * 8);
 
     // Compress according to line density
@@ -592,7 +608,7 @@ class Generator {
     }
 
     final int heightPx = imageRotated.height;
-    const int densityByte =
+    int densityByte =
         (highDensityHorizontal ? 1 : 0) + (highDensityVertical ? 32 : 0);
 
     final List<int> header = List.from(cBitImg.codeUnits);
@@ -721,6 +737,17 @@ class Generator {
     return bytes;
   }
 
+  //0 - 17
+  //or 48 - 59
+  //TM-T82II  m = 0 – 11, 48 – 59
+  List<int> printSpeech(int level) {
+    List<int> bytes = [];
+    // FN 167. QR Code: Set the size of module
+    // pL pH fn m
+    bytes += cControlHeader.codeUnits + [0x02, 0x00, 0x32, level];
+    return bytes;
+  }
+
   /// Open cash drawer
   List<int> drawer({PosDrawer pin = PosDrawer.pin2}) {
     List<int> bytes = [];
@@ -754,6 +781,7 @@ class Generator {
     bytes += emptyLines(linesAfter + 1);
     return bytes;
   }
+
   // ************************ (end) Public command generators ************************
 
   // ************************ (end) Internal command generators ************************
@@ -835,5 +863,5 @@ class Generator {
     bytes += emptyLines(linesAfter + 1);
     return bytes;
   }
-  // ************************ (end) Internal command generators ************************
+// ************************ (end) Internal command generators ************************
 }

pubspec.lock

@@ -5,70 +5,70 @@ packages:
     dependency: transitive
     description:
       name: archive
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.1.2"
+    version: "3.2.1"
   async:
     dependency: transitive
     description:
       name: async
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.8.2"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   characters:
     dependency: transitive
     description:
       name: characters
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   charcode:
     dependency: transitive
     description:
       name: charcode
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.1"
   clock:
     dependency: transitive
     description:
       name: clock
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   collection:
     dependency: transitive
     description:
       name: collection
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.15.0"
   crypto:
     dependency: transitive
     description:
       name: crypto
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "3.0.1"
   csslib:
     dependency: transitive
     description:
       name: csslib
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.17.0"
+    version: "0.17.1"
   fake_async:
     dependency: transitive
     description:
       name: fake_async
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   flutter:
@@ -85,58 +85,65 @@ packages:
     dependency: "direct main"
     description:
       name: gbk_codec
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.4.0"
   hex:
     dependency: "direct main"
     description:
       name: hex
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.2.0"
   html:
     dependency: transitive
     description:
       name: html
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.15.0"
   image:
     dependency: "direct main"
     description:
       name: image
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "3.0.5"
+    version: "3.1.3"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.12.11"
+  material_color_utilities:
+    dependency: transitive
+    description:
+      name: material_color_utilities
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "0.1.3"
   meta:
     dependency: transitive
     description:
       name: meta
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.7.0"
   path:
     dependency: transitive
     description:
       name: path
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.0"
   petitparser:
     dependency: transitive
     description:
       name: petitparser
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "4.3.0"
+    version: "4.4.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -146,64 +153,64 @@ packages:
     dependency: transitive
     description:
       name: source_span
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.8.1"
   stack_trace:
     dependency: transitive
     description:
       name: stack_trace
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.10.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.0"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.1.0"
   term_glyph:
     dependency: transitive
     description:
       name: term_glyph
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.2.0"
   test_api:
     dependency: transitive
     description:
       name: test_api
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.3"
+    version: "0.4.8"
   typed_data:
     dependency: transitive
     description:
       name: typed_data
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.3.0"
   vector_math:
     dependency: transitive
     description:
       name: vector_math
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "2.1.0"
+    version: "2.1.1"
   xml:
     dependency: transitive
     description:
       name: xml
-      url: "https://pub.dartlang.org"
+      url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "5.3.0"
+    version: "5.3.1"
 sdks:
   dart: ">=2.14.0 <3.0.0"