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Diffstat (limited to 'khexedit/lib/controller/keditor.cpp')
| -rw-r--r-- | khexedit/lib/controller/keditor.cpp | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/khexedit/lib/controller/keditor.cpp b/khexedit/lib/controller/keditor.cpp new file mode 100644 index 0000000..7d4e92f --- /dev/null +++ b/khexedit/lib/controller/keditor.cpp @@ -0,0 +1,197 @@ +/*************************************************************************** + keditor.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. * + * * + ***************************************************************************/ + + + +// lib specific +#include "kdatabuffer.h" +#include "kbufferranges.h" +#include "kbufferlayout.h" +#include "kbuffercursor.h" +#include "kwordbufferservice.h" +#include "khexedit.h" +#include "keditor.h" + + +using namespace KHE; + +KEditor::KEditor( KBufferCursor *BC, KHexEdit* HE, KController *P ) + : KController( HE, P ), + BufferCursor( BC ) +{ +} + + +bool KEditor::handleKeyPress( QKeyEvent *KeyEvent ) +{ + bool clearUndoRedoInfo = true; + bool ShiftPressed = KeyEvent->state() & Qt::ShiftButton; + bool ControlPressed = KeyEvent->state() & Qt::ControlButton; + bool AltPressed = KeyEvent->state() & Qt::AltButton; + + bool KeyUsed = true; + // 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_Delete: + if( ShiftPressed ) + HexEdit->cut(); + else if( HexEdit->BufferRanges->hasSelection() ) + HexEdit->removeSelectedData(); + else + { + doEditAction( ControlPressed ? WordDelete : CharDelete ); + clearUndoRedoInfo = false; + } + break; + + case Qt::Key_Insert: + if( ShiftPressed ) + HexEdit->paste(); + else if( ControlPressed ) + HexEdit->copy(); + else + HexEdit->setOverwriteMode( !HexEdit->OverWrite ); + break; + + case Qt::Key_Backspace: + if( AltPressed ) + { + if( ControlPressed ) + break; + else if( ShiftPressed ) + { +// HexEdit->redo(); + break; + } + else + { +// HexEdit->undo(); + break; + } + } + else if( HexEdit->BufferRanges->hasSelection() ) + { + HexEdit->removeSelectedData(); + break; + } + + doEditAction( ControlPressed ? WordBackspace : CharBackspace ); + clearUndoRedoInfo = false; + break; + case Qt::Key_F16: // "Copy" key on Sun keyboards + HexEdit->copy(); + break; + case Qt::Key_F18: // "Paste" key on Sun keyboards + HexEdit->paste(); + break; + case Qt::Key_F20: // "Cut" key on Sun keyboards + HexEdit->cut(); + break; + + default: + KeyUsed = false; + } + +// if( clearUndoRedoInfo ) +// clearUndoRedo(); +// changeIntervalTimer->start( 100, true ); + + return KeyUsed ? true : KController::handleKeyPress(KeyEvent); +} + + + +void KEditor::doEditAction( KEditAction Action ) +{ + KSection ChangedRange; + + HexEdit->pauseCursor( true ); + + switch( Action ) + { + case CharDelete: + if( !HexEdit->OverWrite ) + { + int Index = BufferCursor->realIndex(); + if( Index < HexEdit->BufferLayout->length() ) + { + ChangedRange = HexEdit->removeData( KSection(Index,1,false) ); + if( Index == HexEdit->BufferLayout->length() ) + BufferCursor->gotoEnd(); + } + } + break; + + case WordDelete: // kills data until the start of the next word + if( !HexEdit->OverWrite ) + { + int Index = BufferCursor->realIndex(); + if( Index < HexEdit->BufferLayout->length() ) + { + KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec ); + int End = WBS.indexOfBeforeNextWordStart( Index ); + ChangedRange = HexEdit->removeData( KSection(Index,End) ); + if( Index == HexEdit->BufferLayout->length() ) + BufferCursor->gotoEnd(); + } + } + break; + + case CharBackspace: + if( HexEdit->OverWrite ) + BufferCursor->gotoPreviousByte(); + else + { + int DeleteIndex = BufferCursor->realIndex() - 1; + if( DeleteIndex >= 0 ) + { + ChangedRange = HexEdit->removeData( KSection(DeleteIndex,1,false) ); + if( DeleteIndex == HexEdit->BufferLayout->length() ) + BufferCursor->gotoEnd(); + else + BufferCursor->gotoPreviousByte(); + } + } + break; + case WordBackspace: + { + int LeftIndex = BufferCursor->realIndex() - 1; + if( LeftIndex >= 0 ) + { + KWordBufferService WBS( HexEdit->DataBuffer, HexEdit->Codec ); + int WordStart = WBS.indexOfPreviousWordStart( LeftIndex ); + if( !HexEdit->OverWrite ) + ChangedRange = HexEdit->removeData( KSection(WordStart,LeftIndex) ); + if( WordStart == HexEdit->BufferLayout->length() ) + BufferCursor->gotoEnd(); + else + BufferCursor->gotoIndex(WordStart); + } + } + } + + HexEdit->repaintChanged(); + HexEdit->ensureCursorVisible(); + + HexEdit->unpauseCursor(); + + emit HexEdit->cursorPositionChanged( BufferCursor->index() ); + if( ChangedRange.isValid() ) emit HexEdit->bufferChanged( ChangedRange.start(), ChangedRange.end() ); +} |