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

29 lines
806 B
C++

#include "removecommand.h"
RemoveCommand::RemoveCommand(QHexDocument *doc, qsizetype offset,
qsizetype length, QHexCursor *cursor,
int nibbleindex, QUndoCommand *parent)
: HexCommand(doc, cursor, nibbleindex, parent) {
m_offset = offset;
m_length = length;
m_data = doc->read(m_offset, m_length);
}
void RemoveCommand::undo() {
m_doc->_insert(m_offset, m_data);
if (m_length > 1) {
m_cursor->setPos(m_offset + m_length - 1, 1);
} else {
if (m_nibbleindex) {
m_cursor->setPos(m_offset + 1, 1);
} else {
m_cursor->setPos(m_offset, 0);
}
}
}
void RemoveCommand::redo() {
m_cursor->setPos(m_offset, m_nibbleindex);
m_doc->_remove(m_offset, m_length);
}