Bug 45312: Add unit-test and javadoc, also convert file to proper line-ending and make poi.deserialize.escher=true behave for full reading of files outside of BiffViewer

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1621586 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/poi/hssf/dev/BiffViewer.java

@@ -145,7 +145,7 @@ public final class BiffViewer {
 			case DatRecord.sid:            return new DatRecord(in);
 			case DataFormatRecord.sid:     return new DataFormatRecord(in);
 			case DateWindow1904Record.sid: return new DateWindow1904Record(in);
-		case DConRefRecord.sid: return new DConRefRecord(in);
+			case DConRefRecord.sid: return new DConRefRecord(in);
 			case DefaultColWidthRecord.sid:return new DefaultColWidthRecord(in);
 			case DefaultDataLabelTextPropertiesRecord.sid: return new DefaultDataLabelTextPropertiesRecord(in);
 			case DefaultRowHeightRecord.sid: return new DefaultRowHeightRecord(in);

src/java/org/apache/poi/hssf/record/AbstractEscherHolderRecord.java

@@ -57,20 +57,19 @@ public abstract class AbstractEscherHolderRecord extends Record {
     public AbstractEscherHolderRecord(RecordInputStream in)
     {
         escherRecords = new ArrayList<EscherRecord>();
-        if (! DESERIALISE )
-        {
+        if (! DESERIALISE ) {
             rawDataContainer.concatenate(in.readRemainder());
-        }
-        else
-        {
+        } else {
             byte[] data = in.readAllContinuedRemainder();
             convertToEscherRecords( 0, data.length, data );
         }
     }
 
     protected void convertRawBytesToEscherRecords() {
-        byte[] rawData = getRawData();
-    	convertToEscherRecords(0, rawData.length, rawData);
+        if (! DESERIALISE ) {
+            byte[] rawData = getRawData();
+        	convertToEscherRecords(0, rawData.length, rawData);
+        }
     }
     private void convertToEscherRecords( int offset, int size, byte[] data )
     {
@@ -224,7 +223,7 @@ public abstract class AbstractEscherHolderRecord extends Record {
 
     public EscherRecord getEscherRecord(int index)
     {
-        return (EscherRecord) escherRecords.get(index);
+        return escherRecords.get(index);
     }
 
     /**

src/java/org/apache/poi/hssf/usermodel/HSSFClientAnchor.java

@@ -42,6 +42,10 @@ public final class HSSFClientAnchor extends HSSFAnchor implements ClientAnchor {
     /**
      * Creates a new client anchor and sets the top-left and bottom-right
      * coordinates of the anchor.
+     * 
+     * Note: Microsoft Excel seems to sometimes disallow 
+     * higher y1 than y2 or higher x1 than x2, you might need to 
+     * reverse them and draw shapes vertically or horizontally flipped! 
      *
      * @param dx1  the x coordinate within the first cell.
      * @param dy1  the y coordinate within the first cell.
@@ -186,8 +190,12 @@ public final class HSSFClientAnchor extends HSSFAnchor implements ClientAnchor {
     }
 
     /**
-     * Dets the top-left and bottom-right
-     * coordinates of the anchor.
+     * Sets the top-left and bottom-right coordinates of 
+     * the anchor.
+     * 
+     * Note: Microsoft Excel seems to sometimes disallow 
+     * higher y1 than y2 or higher x1 than x2, you might need to 
+     * reverse them and draw shapes vertically or horizontally flipped! 
      *
      * @param x1   the x coordinate within the first cell.
      * @param y1   the y coordinate within the first cell.

src/java/org/apache/poi/hssf/usermodel/HSSFPatriarch.java

@@ -171,6 +171,10 @@ public final class HSSFPatriarch implements HSSFShapeContainer, Drawing {
     /**
      * Creates a simple shape.  This includes such shapes as lines, rectangles,
      * and ovals.
+     * 
+     * Note: Microsoft Excel seems to sometimes disallow 
+     * higher y1 than y2 or higher x1 than x2 in the anchor, you might need to 
+     * reverse them and draw shapes vertically or horizontally flipped! 
      *
      * @param anchor the client anchor describes how this group is attached
      *               to the sheet.

src/java/org/apache/poi/hssf/usermodel/HSSFShape.java

@@ -27,6 +27,11 @@ import java.io.IOException;
 
 /**
  * An abstract shape.
+ * 
+ * Note: Microsoft Excel seems to sometimes disallow 
+ * higher y1 than y2 or higher x1 than x2 in the anchor, you might need to 
+ * reverse them and draw shapes vertically or horizontally flipped via
+ * setFlipVertical() or setFlipHorizontally(). 
  */
 public abstract class HSSFShape {
     public static final int LINEWIDTH_ONE_PT = 12700;