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