1 files changed, 142 insertions, 0 deletions
diff --git a/khexedit/lib/controller/knavigator.cpp b/khexedit/lib/controller/knavigator.cpp
new file mode 100644
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+++ b/khexedit/lib/controller/knavigator.cpp
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+/***************************************************************************
+                          knavigator.cpp  -  description
+                             -------------------
+    begin                : Sa Dez 4 2004
+    copyright            : (C) 2004 by Friedrich W. H. Kossebau
+    email                : Friedrich.W.H@Kossebau.de
+ ***************************************************************************/
+
+/***************************************************************************
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License version 2 as published by the Free Software Foundation.       *
+ *                                                                         *
+ ***************************************************************************/
+
+
+
+// qt specific
+#include <qevent.h>
+// lib specific
+#include "kdatabuffer.h"
+#include "kbufferranges.h"
+#include "kbuffercursor.h"
+#include "kwordbufferservice.h"
+#include "khexedit.h"
+#include "knavigator.h"
+
+
+using namespace KHE;
+
+KNavigator::KNavigator( KHexEdit* HE, KController *P )
+  : KController( HE, P )
+{
+}
+
+bool KNavigator::handleKeyPress( QKeyEvent *KeyEvent )
+{
+  bool KeyUsed = true;
+
+  //bool clearUndoRedoInfo = true;
+  bool ShiftPressed =  KeyEvent->state() & Qt::ShiftButton;
+  bool ControlPressed = KeyEvent->state() & Qt::ControlButton;
+  //bool AltPressed = KeyEvent->state() & AltButton;
+
+  // we only care for cursor keys and the like, won't hardcode any other keys
+  // we also don't check whether the commands are allowed
+  // as the commands are also available as API so the check has to be done
+  // in each command anyway
+  switch( KeyEvent->key() )
+  {
+    case Qt::Key_Left:
+      moveCursor( ControlPressed ? MoveWordBackward : MoveBackward, ShiftPressed );
+      break;
+    case Qt::Key_Right:
+      moveCursor( ControlPressed ? MoveWordForward : MoveForward, ShiftPressed );
+      break;
+    case Qt::Key_Up:
+      moveCursor( ControlPressed ? MovePgUp : MoveUp, ShiftPressed );
+      break;
+    case Qt::Key_Down:
+      moveCursor( ControlPressed ? MovePgDown : MoveDown, ShiftPressed );
+      break;
+    case Qt::Key_Home:
+      moveCursor( ControlPressed ? MoveHome : MoveLineStart, ShiftPressed );
+      break;
+    case Qt::Key_End:
+      moveCursor( ControlPressed ? MoveEnd : MoveLineEnd, ShiftPressed );
+      break;
+    case Qt::Key_Prior:
+      moveCursor( MovePgUp, ShiftPressed );
+      break;
+    case Qt::Key_Next:
+      moveCursor( MovePgDown, ShiftPressed );
+      break;
+
+    default:
+      KeyUsed = false;
+  }
+
+  return KeyUsed ? true : KController::handleKeyPress(KeyEvent);
+}
+
+
+void KNavigator::moveCursor( KMoveAction Action, bool Select )
+{
+  HexEdit->pauseCursor( true );
+
+  KBufferCursor *BufferCursor = HexEdit->BufferCursor;
+  KBufferRanges *BufferRanges = HexEdit->BufferRanges;
+
+  if( Select )
+  {
+    if( !BufferRanges->selectionStarted() )
+      BufferRanges->setSelectionStart( BufferCursor->realIndex() );
+  }
+  else
+    BufferRanges->removeSelection();
+
+  HexEdit->resetInputContext();
+  switch( Action )
+  {
+    case MoveBackward:     BufferCursor->gotoPreviousByte(); break;
+    case MoveWordBackward: {
+      KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec );
+      int NewIndex = WBS.indexOfPreviousWordStart( BufferCursor->realIndex() );
+      BufferCursor->gotoIndex( NewIndex );
+    }
+    break;
+    case MoveForward:      BufferCursor->gotoNextByte();     break;
+    case MoveWordForward:  {
+      KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec );
+      int NewIndex = WBS.indexOfNextWordStart( BufferCursor->realIndex() );
+      BufferCursor->gotoCIndex( NewIndex );
+    }
+    break;
+    case MoveUp:           BufferCursor->gotoUp();             break;
+    case MovePgUp:         BufferCursor->gotoPageUp();         break;
+    case MoveDown:         BufferCursor->gotoDown();           break;
+    case MovePgDown:       BufferCursor->gotoPageDown();       break;
+    case MoveLineStart:    BufferCursor->gotoLineStart();      break;
+    case MoveHome:         BufferCursor->gotoStart();          break;
+    case MoveLineEnd:      BufferCursor->gotoLineEnd();        break;
+    case MoveEnd:          BufferCursor->gotoEnd();            break;
+  }
+
+  if( Select )
+    BufferRanges->setSelectionEnd( BufferCursor->realIndex() );
+
+  HexEdit->repaintChanged();
+  HexEdit->ensureCursorVisible();
+
+  HexEdit->unpauseCursor();
+
+  if( BufferRanges->isModified() )
+  {
+    if( !HexEdit->isOverwriteMode() ) emit HexEdit->cutAvailable( BufferRanges->hasSelection() );
+    emit HexEdit->copyAvailable( BufferRanges->hasSelection() );
+    KSection Selection = BufferRanges->selection();
+    emit HexEdit->selectionChanged( Selection.start(), Selection.end() );
+  }
+}