[LIB-9] Add ability to archive qrcode content

[chesshog.git] / chesshog-qrcode / src / main / java / org / hedgecode / chess / qrcode / ChessQRCodeWriter.java

diff --git a/chesshog-qrcode/src/main/java/org/hedgecode/chess/qrcode/ChessQRCodeWriter.java b/chesshog-qrcode/src/main/java/org/hedgecode/chess/qrcode/ChessQRCodeWriter.java
index bc11750..cb2d532 100644 (file)
--- a/chesshog-qrcode/src/main/java/org/hedgecode/chess/qrcode/ChessQRCodeWriter.java
+++ b/chesshog-qrcode/src/main/java/org/hedgecode/chess/qrcode/ChessQRCodeWriter.java
@@ -35,7 +35,6 @@ import com.google.zxing.qrcode.encoder.ByteMatrix;
 import com.google.zxing.qrcode.encoder.Encoder;
 import com.google.zxing.qrcode.encoder.QRCode;
 
-import org.hedgecode.chess.ChessQRCodeConstants;
 import org.hedgecode.chess.img.ImageFormat;
 
 /**
@@ -47,12 +46,13 @@ public class ChessQRCodeWriter {
 
     private static final int DEF_QUIET_ZONE_SIZE = 4;
     private static final int DEF_QRCODE_BIT_SIZE = 250;
+    private static final int MIN_QRCODE_BIT_SIZE = 50;
 
     private static final ErrorCorrectionLevel DEF_ERR_CORR_LEVEL = ErrorCorrectionLevel.H; // todo: Q
 
     private static ChessQRCodeWriter _instance = new ChessQRCodeWriter();
 
-    private ChessQRCodeWriter() {
+    protected ChessQRCodeWriter() {
     }
 
     public void write(ChessQRCodeMode mode, String contents, ImageFormat format, String qrCodeFilePath)
@@ -139,7 +139,7 @@ public class ChessQRCodeWriter {
         );
     }
 
-    private BitMatrix encode(
+    protected BitMatrix encode(
             ChessQRCodeMode mode,
             String contents,
             int width, int height,
@@ -158,12 +158,14 @@ public class ChessQRCodeWriter {
             );
         }
 
-        if (width < 0 || height < 0) { // todo
+        if (Math.min(width, height) < MIN_QRCODE_BIT_SIZE) { // todo: check for Version
             throw new ChessQRCodeException(
                     ChessQRCodeException.Type.WRITE, "write.qrcode.size.incorrect"
             );
         }
 
+        String qrCodeContents = mode.name().concat(contents);
+
         int quietZone = DEF_QUIET_ZONE_SIZE;
         ErrorCorrectionLevel errorCorrectionLevel = DEF_ERR_CORR_LEVEL;
 
@@ -188,12 +190,10 @@ public class ChessQRCodeWriter {
         }
         hints = newHints;
 
-        String qrCodeText = mode.name().concat(contents);
-
         QRCode qrCode;
         try {
             qrCode = Encoder.encode(
-                    qrCodeText, errorCorrectionLevel, hints
+                    qrCodeContents, errorCorrectionLevel, hints
             );
         } catch (WriterException e) {
             throw new ChessQRCodeException(
@@ -239,7 +239,7 @@ public class ChessQRCodeWriter {
                     ChessQRCodeMode.FEN,
                     "rnbqkbnr/ppp1pppp/8/3p4/4P3/8/PPPP1PPP/RNBQKBNR w KQkq d6 0 2",
                     ImageFormat.PNG,
-                    "./MyQRCode.png"
+                    "./qrcode.png"
             );
 /*
             ChessQRCodeWriter.getInstance().write(
@@ -249,7 +249,7 @@ public class ChessQRCodeWriter {
                             "11.Bf4 b5 12.a4 Bb7 13.Re1 Nd5 14.Bg3 Kc8 15.axb5 cxb5 16.Qd3 Bc6 \n" +
                             "17.Bf5 exf5 18.Rxe7 Bxe7 19.c4 1-0",
                     ImageFormat.PNG,
-                    "./MyQRCode.png"
+                    "./qrcode.png"
             );
 */
         } catch (ChessQRCodeException e) {