Get rid of QChar::LineSeparator

It was causing troubles while scrolling. Replace it with
\n and hack selection. Simplify the code. Now every line
is a separate block. Prepare for expanding skipped lines.

Change-Id: I8d305681c575abdaaf9cdbf26de864dd3a906d3a
Reviewed-by: David Schulz <david.schulz@digia.com>
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/diffeditor/diffeditorwidget.h

@@ -81,11 +81,9 @@ struct RowData {
 };
 
 struct ChunkData {
-    ChunkData() : skippedLinesBefore(0), leftOffset(0), rightOffset(0) {}
+    ChunkData() : alwaysShown(true) {}
     QList<RowData> rows;
-    int skippedLinesBefore; // info for text
-    int leftOffset;
-    int rightOffset;
+    bool alwaysShown;
     // <absolute position in the file, absolute position in the file>
     QMap<int, int> changedLeftPositions; // counting from the beginning of the chunk
     QMap<int, int> changedRightPositions; // counting from the beginning of the chunk
@@ -96,7 +94,6 @@ struct FileData {
     FileData() {}
     FileData(const ChunkData &chunkData) { chunks.append(chunkData); }
     QList<ChunkData> chunks;
-    QList<int> chunkOffset;
     QString text;
 };
 
@@ -150,8 +147,6 @@ private:
 
     ChunkData m_originalChunkData;
     FileData m_contextFileData;
-    int m_leftSafePosHack;
-    int m_rightSafePosHack;
 };
 
 } // namespace DiffEditor