Initial commit

Initial commit til Git.
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PointOfSale/Pos.EpsonPrinter/EscPosCommands.cs

@@ -0,0 +1,63 @@
+namespace EpsonReceiptPrinter;
+
+public static class EscPosCommands
+{
+    public static readonly byte[] Initialize = [0x1B, 0x40];
+
+    public static readonly byte[] BoldOn = [0x1B, 0x45, 0x01];
+    public static readonly byte[] BoldOff = [0x1B, 0x45, 0x00];
+
+    public static readonly byte[] UnderlineOn = [0x1B, 0x2D, 0x01];
+    public static readonly byte[] UnderlineOff = [0x1B, 0x2D, 0x00];
+
+    public static readonly byte[] AlignLeft = [0x1B, 0x61, 0x00];
+    public static readonly byte[] AlignCenter = [0x1B, 0x61, 0x01];
+    public static readonly byte[] AlignRight = [0x1B, 0x61, 0x02];
+
+    public static readonly byte[] FontA = [0x1B, 0x4D, 0x00];
+    public static readonly byte[] FontB = [0x1B, 0x4D, 0x01];
+
+    public static byte[] Feed(int lines)
+    {
+        if (lines < 0 || lines > 255)
+        {
+            throw new ArgumentOutOfRangeException(nameof(lines));
+        }
+
+        return [0x1B, 0x64, (byte)lines];
+    }
+
+    public static byte[] CutFull() => [0x1D, 0x56, 0x00];
+
+    public static byte[] CutPartial() => [0x1D, 0x56, 0x01];
+
+    public static byte[] OpenCashDrawer() => [0x1B, 0x70, 0x00, 0x19, 0xFA];
+
+    public static byte[] SelectCodePage(PrinterCodePage codePage) => [0x1B, 0x74, (byte)codePage];
+
+    public static byte[] TextSize(TextSize size) =>
+        size switch
+        {
+            TextSize.Normal => [0x1D, 0x21, 0x00],
+            TextSize.DoubleWidth => [0x1D, 0x21, 0x10],
+            TextSize.DoubleHeight => [0x1D, 0x21, 0x01],
+            TextSize.DoubleWidthAndHeight => [0x1D, 0x21, 0x11],
+            _ => [0x1D, 0x21, 0x00]
+        };
+
+    public static byte[] TextSize(int widthMultiplier, int heightMultiplier)
+    {
+        if (widthMultiplier < 1 || widthMultiplier > 8)
+        {
+            throw new ArgumentOutOfRangeException(nameof(widthMultiplier));
+        }
+
+        if (heightMultiplier < 1 || heightMultiplier > 8)
+        {
+            throw new ArgumentOutOfRangeException(nameof(heightMultiplier));
+        }
+
+        var value = (byte)(((widthMultiplier - 1) << 4) | (heightMultiplier - 1));
+        return [0x1D, 0x21, value];
+    }
+}