WingHexExplorer2/3rdparty/QHexView/document/commands/hex/replacecommand.cpp

28 lines
816 B
C++

#include "replacecommand.h"
#include "document/qhexdocument.h"
ReplaceCommand::ReplaceCommand(QHexDocument *doc, qsizetype offset,
const QByteArray &data, QHexCursor *cursor,
int nibbleindex, QUndoCommand *parent)
: HexCommand(doc, cursor, nibbleindex, parent) {
m_offset = offset;
m_data = data;
m_length = data.length();
m_olddata = doc->read(m_offset, m_length);
}
void ReplaceCommand::undo() {
m_doc->_replace(m_offset, m_olddata);
m_cursor->setPos(m_offset, m_nibbleindex);
}
void ReplaceCommand::redo() {
m_doc->_replace(m_offset, m_data);
if (m_data.length() == 1 && m_nibbleindex) {
m_cursor->setPos(m_offset, 0);
} else {
m_cursor->setPos(m_offset + m_length, !m_nibbleindex);
}
}