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qhexview.cpp
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qhexview.cpp
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#include "qhexview.h"
#include "model/buffer/qmemorybuffer.h"
#include "model/qhexcursor.h"
#include "model/qhexutils.h"
#include <QtGlobal>
#include <QtMath>
#include <QMouseEvent>
#include <QWheelEvent>
#include <QTextDocument>
#include <QFontDatabase>
#include <QApplication>
#include <QClipboard>
#include <QTextDocument>
#include <QTextCursor>
#include <QScrollBar>
#include <QToolTip>
#include <QPalette>
#include <QPainter>
#include <limits>
#if defined(QHEXVIEW_ENABLE_DIALOGS)
#include "dialogs/hexfinddialog.h"
#endif
#if defined(QHEXVIEW_DEBUG)
#include <QDebug>
#define qhexview_fmtprint(fmt, ...) qDebug("%s " fmt, __func__, __VA_ARGS__)
#else
#define qhexview_fmtprint(fmt, ...)
#endif
QHexView::QHexView(QWidget *parent) : QAbstractScrollArea(parent), m_fontmetrics(this->font())
{
QFont f = QFontDatabase::systemFont(QFontDatabase::FixedFont);
if(f.styleHint() != QFont::TypeWriter)
{
f.setFamily("Monospace"); // Force Monospaced font
f.setStyleHint(QFont::TypeWriter);
}
this->setFont(f);
this->setMouseTracking(true);
this->setFocusPolicy(Qt::StrongFocus);
this->viewport()->setCursor(Qt::IBeamCursor);
QPalette p = this->palette();
p.setBrush(QPalette::Window, p.base());
connect(this->verticalScrollBar(), &QScrollBar::valueChanged, this, [=](int) { this->viewport()->update(); });
m_hexmetadata = new QHexMetadata(&m_options, this);
connect(m_hexmetadata, &QHexMetadata::changed, this, [=]() { this->viewport()->update(); });
m_hexcursor = new QHexCursor(&m_options, this);
this->setDocument(QHexDocument::fromMemory<QMemoryBuffer>(QByteArray(), this));
this->checkState();
connect(m_hexcursor, &QHexCursor::positionChanged, this, [=]() {
m_writing = false;
this->ensureVisible();
Q_EMIT positionChanged();
});
connect(m_hexcursor, &QHexCursor::modeChanged, this, [=]() {
m_writing = false;
this->viewport()->update();
Q_EMIT modeChanged();
});
}
QRectF QHexView::headerRect() const
{
if(m_options.hasFlag(QHexFlags::NoHeader)) return QRectF();
return QRectF(0,
0,
this->endColumnX(),
this->lineHeight());
}
QRectF QHexView::addressRect() const
{
qreal y = m_options.hasFlag(QHexFlags::NoHeader) ? 0 : this->lineHeight();
return QRectF(0,
y,
this->endColumnX(),
this->height() - y);
}
QRectF QHexView::hexRect() const
{
qreal y = m_options.hasFlag(QHexFlags::NoHeader) ? 0 : this->lineHeight();
return QRectF(this->hexColumnX(),
y,
this->asciiColumnX() - this->hexColumnX(),
this->height() - y);
}
QRectF QHexView::asciiRect() const
{
qreal y = m_options.hasFlag(QHexFlags::NoHeader) ? 0 : this->lineHeight();
return QRectF(this->asciiColumnX(),
y,
this->endColumnX() - this->asciiColumnX(),
this->height() - y);
}
QHexDocument* QHexView::hexDocument() const { return m_hexdocument; }
QHexCursor* QHexView::hexCursor() const { return m_hexdocument ? m_hexcursor : nullptr; }
const QHexMetadata* QHexView::hexMetadata() const { return m_hexmetadata; }
QHexOptions QHexView::options() const { return m_options; }
void QHexView::setOptions(const QHexOptions& options)
{
auto oldlinelength = m_options.linelength;
m_options = options;
if(oldlinelength != m_options.linelength)
m_hexmetadata->invalidate();
this->checkAndUpdate();
}
void QHexView::setBaseAddress(quint64 baseaddress)
{
if(m_options.baseaddress == baseaddress) return;
m_options.baseaddress = baseaddress;
this->checkAndUpdate();
}
void QHexView::setDelegate(QHexDelegate* rd)
{
if(m_hexdelegate == rd) return;
m_hexdelegate = rd;
this->checkAndUpdate();
}
void QHexView::setDocument(QHexDocument* doc)
{
if(!doc) doc = QHexDocument::fromMemory<QMemoryBuffer>(QByteArray(), this);
if(!doc->parent()) doc->setParent(this);
m_writing = false;
m_hexmetadata->clear();
m_hexcursor->move(0);
if(m_hexdocument)
{
disconnect(m_hexdocument, &QHexDocument::changed, this, nullptr);
disconnect(m_hexdocument, &QHexDocument::dataChanged, this, nullptr);
disconnect(m_hexdocument, &QHexDocument::reset, this, nullptr);
}
m_hexdocument = doc;
connect(m_hexdocument, &QHexDocument::reset, this, [=]() {
m_writing = false;
m_hexcursor->move(0);
this->checkAndUpdate(true);
});
connect(m_hexdocument, &QHexDocument::dataChanged, this, &QHexView::dataChanged);
connect(m_hexdocument, &QHexDocument::changed, this, [=]() { this->checkAndUpdate(true); });
this->checkAndUpdate(true);
}
void QHexView::setData(const QByteArray& ba) { m_hexdocument->setData(ba); }
void QHexView::setData(QHexBuffer* buffer) { m_hexdocument->setData(buffer); }
void QHexView::setCursorMode(QHexCursor::Mode mode) { m_hexcursor->setMode(mode); }
void QHexView::setByteColor(quint8 b, QHexColor c)
{
m_options.bytecolors[b] = c;
this->checkAndUpdate();
}
void QHexView::setByteForeground(quint8 b, QColor c)
{
m_options.bytecolors[b].foreground = c;
this->checkAndUpdate();
}
void QHexView::setByteBackground(quint8 b, QColor c)
{
m_options.bytecolors[b].background = c;
this->checkAndUpdate();
}
void QHexView::setMetadata(qint64 begin, qint64 end, const QColor& fgcolor, const QColor& bgcolor, const QString& comment) { m_hexmetadata->setMetadata(begin, end, fgcolor, bgcolor, comment); }
void QHexView::setForeground(qint64 begin, qint64 end, const QColor& fgcolor) { m_hexmetadata->setForeground(begin, end, fgcolor); }
void QHexView::setBackground(qint64 begin, qint64 end, const QColor& bgcolor) { m_hexmetadata->setBackground(begin, end, bgcolor); }
void QHexView::setComment(qint64 begin, qint64 end, const QString& comment) { m_hexmetadata->setComment(begin, end, comment); }
void QHexView::setMetadataSize(qint64 begin, qint64 length, const QColor& fgcolor, const QColor& bgcolor, const QString& comment) { m_hexmetadata->setMetadataSize(begin, length, fgcolor, bgcolor, comment); }
void QHexView::setForegroundSize(qint64 begin, qint64 length, const QColor& fgcolor) { m_hexmetadata->setForegroundSize(begin, length, fgcolor); }
void QHexView::setBackgroundSize(qint64 begin, qint64 length, const QColor& bgcolor) { m_hexmetadata->setBackgroundSize(begin, length, bgcolor); }
void QHexView::setCommentSize(qint64 begin, qint64 length, const QString& comment) { m_hexmetadata->setCommentSize(begin, length, comment); }
void QHexView::removeMetadata(qint64 line) { m_hexmetadata->removeMetadata(line); }
void QHexView::removeBackground(qint64 line) { m_hexmetadata->removeBackground(line); }
void QHexView::removeForeground(qint64 line) { m_hexmetadata->removeForeground(line); }
void QHexView::removeComments(qint64 line) { m_hexmetadata->removeComments(line); }
void QHexView::unhighlight(qint64 line) { m_hexmetadata->unhighlight(line); }
void QHexView::clearMetadata() { m_hexmetadata->clear(); }
#if defined(QHEXVIEW_ENABLE_DIALOGS)
void QHexView::showFind()
{
if(!m_hexdlgfind) m_hexdlgfind = new HexFindDialog(HexFindDialog::Type::Find, this);
m_hexdlgfind->show();
}
void QHexView::showReplace()
{
if(!m_hexdlgreplace) m_hexdlgreplace = new HexFindDialog(HexFindDialog::Type::Replace, this);
m_hexdlgreplace->show();
}
#endif
void QHexView::undo() { if(m_hexdocument) m_hexdocument->undo(); }
void QHexView::redo() { if(m_hexdocument) m_hexdocument->redo(); }
void QHexView::cut(bool hex)
{
this->copy(hex);
if(m_readonly) return;
if(m_hexcursor->hasSelection()) this->removeSelection();
else m_hexdocument->remove(m_hexcursor->offset(), 1);
}
void QHexView::copyAs(CopyMode mode) const
{
QClipboard* c = qApp->clipboard();
QByteArray bytes = m_hexcursor->hasSelection() ? m_hexcursor->selectedBytes() :
m_hexdocument->read(m_hexcursor->offset(), 1);
switch(mode)
{
case CopyMode::HexArrayCurly:
case CopyMode::HexArraySquare: {
QString hexchar;
int i = 0;
for(char b : bytes) {
if(!hexchar.isEmpty()) {
hexchar += ", ";
if(m_options.copybreak && !(++i % m_options.linelength)) hexchar += "\n";
}
hexchar += "0x" + QString::number(static_cast<uint>(b), 16).toUpper();
}
c->setText(QString(mode == CopyMode::HexArraySquare ? "[%1]" : "{%1}").arg(hexchar));
break;
}
case CopyMode::HexArrayChar: {
QString hexchar;
for(char b : bytes)
hexchar += "\\x" + QString::number(static_cast<uint>(b), 16).toUpper();
c->setText(QString("\"%1\"").arg(hexchar));
break;
}
default: {
QString hexchar;
for(int i = 0; i < bytes.size(); i++) {
if(!(i % m_options.grouplength)) {
if(!hexchar.isEmpty()) {
hexchar += ", ";
if(m_options.copybreak && !(i % m_options.linelength)) hexchar += "\n";
}
hexchar += "0x";
}
hexchar += QString("%1").arg(static_cast<uint>(bytes[i]), 2, 16, QLatin1Char('0')).toUpper();
}
c->setText(hexchar);
break;
}
}
}
void QHexView::copy(bool hex) const
{
QClipboard* c = qApp->clipboard();
QByteArray bytes = m_hexcursor->hasSelection() ? m_hexcursor->selectedBytes() :
m_hexdocument->read(m_hexcursor->offset(), 1);
if(hex) bytes = QHexUtils::toHex(bytes, ' ').toUpper();
c->setText(bytes);
}
void QHexView::paste(bool hex)
{
if(m_readonly) return;
QClipboard* c = qApp->clipboard();
QByteArray pastedata = c->text().toUtf8();
if(pastedata.isEmpty()) return;
this->removeSelection();
if(hex) pastedata = QByteArray::fromHex(pastedata);
if(m_hexcursor->mode() == QHexCursor::Mode::Insert) m_hexdocument->insert(m_hexcursor->offset(), pastedata);
else m_hexdocument->replace(m_hexcursor->offset(), pastedata);
}
void QHexView::selectAll()
{
m_hexcursor->move(0);
m_hexcursor->select(m_hexdocument->length());
}
void QHexView::removeSelection()
{
if(!m_hexcursor->hasSelection()) return;
if(!m_readonly) m_hexdocument->remove(m_hexcursor->selectionStartOffset(), m_hexcursor->selectionLength() - 1);
m_hexcursor->clearSelection();
}
void QHexView::switchMode() { m_hexcursor->switchMode(); }
void QHexView::setAddressWidth(unsigned int w)
{
if(w == m_options.addresswidth) return;
m_options.addresswidth = w;
this->checkState();
}
void QHexView::setScrollSteps(unsigned int l)
{
if(l == m_options.scrollsteps) return;
m_options.scrollsteps = qMax(1u, l);
}
void QHexView::setReadOnly(bool r) { m_readonly = r; }
void QHexView::setAutoWidth(bool r)
{
if(m_autowidth == r) return;
m_autowidth = r;
this->checkState();
}
void QHexView::paint(QPainter* painter) const
{
QTextDocument doc;
doc.setDocumentMargin(0);
doc.setUndoRedoEnabled(false);
doc.setDefaultFont(this->font());
QTextCursor c(&doc);
this->drawHeader(c);
this->drawDocument(c);
painter->translate(-this->horizontalScrollBar()->value(), 0);
doc.drawContents(painter);
this->drawSeparators(painter);
}
void QHexView::checkOptions()
{
if(m_options.grouplength > m_options.linelength) m_options.grouplength = m_options.linelength;
if(!m_options.scrollsteps) m_options.scrollsteps = 1;
m_options.addresswidth = qMax<unsigned int>(m_options.addresswidth, this->calcAddressWidth());
// Round to nearest multiple of 2
m_options.grouplength = 1u << (static_cast<unsigned int>(qFloor(m_options.grouplength / 2.0)));
if(m_options.grouplength <= 1) m_options.grouplength = 1;
if(!m_options.headercolor.isValid())
m_options.headercolor = this->palette().color(QPalette::Normal, QPalette::Highlight);
}
void QHexView::setLineLength(unsigned int l)
{
if(l == m_options.linelength) return;
m_options.linelength = l;
m_hexmetadata->invalidate();
this->checkAndUpdate(true);
}
void QHexView::setGroupLength(unsigned int l)
{
if(l == m_options.grouplength) return;
m_options.grouplength = l;
this->checkAndUpdate(true);
}
void QHexView::checkState()
{
if(!m_hexdocument) return;
this->checkOptions();
int doclines = static_cast<int>(this->lines()), vislines = this->visibleLines(true);
qint64 vscrollmax = doclines - vislines;
if(doclines >= vislines) vscrollmax++;
this->verticalScrollBar()->setRange(0, qMax<qint64>(0, vscrollmax));
this->verticalScrollBar()->setPageStep(vislines - 1);
this->verticalScrollBar()->setSingleStep(m_options.scrollsteps);
int vw = this->verticalScrollBar()->isVisible() ? this->verticalScrollBar()->width() : 0;
static int oldmw = 0;
if(!oldmw) oldmw = this->maximumWidth();
this->setMaximumWidth(m_autowidth ? qCeil(this->endColumnX() + vw + 3) : oldmw);
this->horizontalScrollBar()->setRange(0, qMax<int>(0, this->endColumnX() - this->width() + vw + 3));
this->horizontalScrollBar()->setPageStep(this->width());
}
void QHexView::checkAndUpdate(bool calccolumns)
{
this->checkState();
if(calccolumns) this->calcColumns();
this->viewport()->update();
}
void QHexView::calcColumns()
{
if(!m_hexdocument) return;
m_hexcolumns.clear();
m_hexcolumns.reserve(m_options.linelength);
auto x = this->hexColumnX(), cw = this->cellWidth() * 2;
for(auto i = 0u; i < m_options.linelength; i++)
{
for(auto j = 0u; j < m_options.grouplength; j++, x += cw)
m_hexcolumns.push_back(QRect(x, 0, cw, 0));
x += this->cellWidth();
}
}
void QHexView::ensureVisible()
{
if(!m_hexdocument) return;
auto pos = m_hexcursor->position();
auto vlines = this->visibleLines();
if(pos.line >= (this->verticalScrollBar()->value() + vlines))
this->verticalScrollBar()->setValue(pos.line - vlines + 1);
else if(pos.line < this->verticalScrollBar()->value())
this->verticalScrollBar()->setValue(pos.line);
else
this->viewport()->update();
}
void QHexView::drawSeparators(QPainter* p) const
{
if(!m_options.hasFlag(QHexFlags::Separators)) return;
auto oldpen = p->pen();
p->setPen(m_options.separatorcolor.isValid() ? m_options.separatorcolor : this->palette().color(QPalette::Dark));
if(m_options.hasFlag(QHexFlags::HSeparator))
{
QLineF l(0, m_fontmetrics.lineSpacing(), this->endColumnX(), m_fontmetrics.lineSpacing());
if(!m_hexdelegate || !m_hexdelegate->paintSeparator(p, l, this)) p->drawLine(l);
}
if(m_options.hasFlag(QHexFlags::VSeparator))
{
QLineF l1(this->hexColumnX(), 0, this->hexColumnX(), this->height());
QLineF l2(this->asciiColumnX(), 0, this->asciiColumnX(), this->height());
if(!m_hexdelegate || (m_hexdelegate && !m_hexdelegate->paintSeparator(p, l1, this)))
p->drawLine(l1);
if(!m_hexdelegate || (m_hexdelegate && !m_hexdelegate->paintSeparator(p, l2, this)))
p->drawLine(l2);
}
p->setPen(oldpen);
}
void QHexView::drawHeader(QTextCursor& c) const
{
if(m_options.hasFlag(QHexFlags::NoHeader)) return;
static const auto RESET_FORMAT = [](const QHexOptions& options, QTextCharFormat& cf) {
cf = { };
cf.setForeground(options.headercolor);
};
QString addresslabel;
if(m_hexdelegate) addresslabel = m_hexdelegate->addressHeader(this);
if(addresslabel.isEmpty() && !m_options.addresslabel.isEmpty()) addresslabel = m_options.addresslabel;
QTextCharFormat cf;
RESET_FORMAT(m_options, cf);
if(m_hexdelegate) m_hexdelegate->renderHeaderPart(addresslabel, QHexArea::Address, cf, this);
c.insertText(" " + QHexView::reduced(addresslabel, this->addressWidth()) + " ", cf);
if(m_hexdelegate) RESET_FORMAT(m_options, cf);
QString hexlabel;
if(m_hexdelegate) hexlabel = m_hexdelegate->hexHeader(this);
if(hexlabel.isEmpty()) hexlabel = m_options.hexlabel;
if(hexlabel.isNull())
{
c.insertText(" ", { });
for(auto i = 0u; i < m_options.linelength; i += m_options.grouplength)
{
QString h = QString::number(i, 16).rightJustified(m_options.grouplength * 2, '0').toUpper();
if(m_hexdelegate)
{
RESET_FORMAT(m_options, cf);
m_hexdelegate->renderHeaderPart(h, QHexArea::Hex, cf, this);
}
if(m_hexcursor->column() == static_cast<qint64>(i) && m_options.hasFlag(QHexFlags::HighlightColumn))
{
cf.setBackground(this->palette().color(QPalette::Highlight));
cf.setForeground(this->palette().color(QPalette::HighlightedText));
}
c.insertText(h, cf);
c.insertText(" ", { });
RESET_FORMAT(m_options, cf);
}
}
else
{
if(m_hexdelegate) m_hexdelegate->renderHeaderPart(hexlabel, QHexArea::Hex, cf, this);
c.insertText(" " + QHexView::reduced(hexlabel, (this->hexColumnWidth() / this->cellWidth()) - 1) + " ");
}
if(m_hexdelegate) RESET_FORMAT(m_options, cf);
QString asciilabel;
if(m_hexdelegate) asciilabel = m_hexdelegate->asciiHeader(this);
if(asciilabel.isEmpty()) asciilabel = m_options.asciilabel;
if(asciilabel.isNull())
{
c.insertText(" ", { });
for(unsigned int i = 0; i < m_options.linelength; i++)
{
QString a = QString::number(i, 16).toUpper();
if(m_hexdelegate)
{
RESET_FORMAT(m_options, cf);
m_hexdelegate->renderHeaderPart(a, QHexArea::Ascii, cf, this);
}
if(m_hexcursor->column() == static_cast<qint64>(i) && m_options.hasFlag(QHexFlags::HighlightColumn))
{
cf.setBackground(this->palette().color(QPalette::Highlight));
cf.setForeground(this->palette().color(QPalette::HighlightedText));
}
c.insertText(a, cf);
RESET_FORMAT(m_options, cf);
}
c.insertText(" ", { });
}
else
{
if(m_hexdelegate) m_hexdelegate->renderHeaderPart(asciilabel, QHexArea::Ascii, cf, this);
c.insertText(" " + QHexView::reduced(asciilabel, ((this->endColumnX() - this->asciiColumnX() - this->cellWidth()) / this->cellWidth()) - 1) + " ");
}
QTextBlockFormat bf;
if(m_options.hasFlag(QHexFlags::StyledHeader)) bf.setBackground(this->palette().color(QPalette::Window));
if(m_hexdelegate) m_hexdelegate->renderHeader(bf, this);
c.setBlockFormat(bf);
c.insertBlock();
}
void QHexView::drawDocument(QTextCursor& c) const
{
if(!m_hexdocument) return;
qreal y = !m_options.hasFlag(QHexFlags::NoHeader) ? this->lineHeight() : 0;
quint64 line = static_cast<quint64>(this->verticalScrollBar()->value());
QTextCharFormat addrformat;
addrformat.setForeground(this->palette().color(QPalette::Normal, QPalette::Highlight));
for(qint64 l = 0; m_hexdocument->isEmpty() || (line < this->lines() && l < this->visibleLines()); l++, line++, y += this->lineHeight())
{
quint64 address = line * m_options.linelength + this->baseAddress();
QString addrstr = QString::number(address, 16).rightJustified(this->addressWidth(), '0').toUpper();
// Address Part
QTextCharFormat acf;
acf.setForeground(m_options.headercolor);
if(m_options.hasFlag(QHexFlags::StyledAddress))
acf.setBackground(this->palette().color(QPalette::Window));
if(m_hexdelegate) m_hexdelegate->renderAddress(address, acf, this);
if(m_hexcursor->line() == static_cast<qint64>(line) && m_options.hasFlag(QHexFlags::HighlightAddress))
{
acf.setBackground(this->palette().color(QPalette::Highlight));
acf.setForeground(this->palette().color(QPalette::HighlightedText));
}
c.insertText(" " + addrstr + " ", acf);
auto linebytes = this->getLine(line);
c.insertText(" ", { });
// Hex Part
for(auto column = 0u; column < m_options.linelength; )
{
QTextCharFormat cf;
for(auto byteidx = 0u; byteidx < m_options.grouplength; byteidx++, column++)
{
QString s = linebytes.isEmpty() || column >= static_cast<qint64>(linebytes.size()) ? " " : QString(QHexUtils::toHex(linebytes.mid(column, 1)).toUpper());
quint8 b = static_cast<int>(column) < linebytes.size() ? linebytes.at(column) : 0x00;
cf = this->drawFormat(c, b, s, QHexArea::Hex, line, column, static_cast<int>(column) < linebytes.size());
}
c.insertText(" ", cf);
}
c.insertText(" ", { });
// Ascii Part
for(auto column = 0u; column < m_options.linelength; column++)
{
auto s = linebytes.isEmpty() ||
column >= static_cast<qint64>(linebytes.size()) ? QChar(' ') :
(QChar::isPrint(linebytes.at(column)) ? QChar(linebytes.at(column)) : m_options.unprintablechar);
quint8 b = static_cast<int>(column) < linebytes.size() ? linebytes.at(column) : 0x00;
this->drawFormat(c, b, s, QHexArea::Ascii, line, column, static_cast<int>(column) < linebytes.size());
}
QTextBlockFormat bf;
if(m_options.linealternatebackground.isValid() && line % 2)
bf.setBackground(m_options.linealternatebackground);
else if(m_options.linebackground.isValid() && !(line % 2))
bf.setBackground(m_options.linebackground);
c.setBlockFormat(bf);
c.insertBlock({});
if(m_hexdocument->isEmpty()) break;
}
}
unsigned int QHexView::calcAddressWidth() const
{
if(!m_hexdocument) return 0;
auto maxaddr = static_cast<quint64>(m_options.baseaddress + m_hexdocument->length());
if(maxaddr <= std::numeric_limits<quint32>::max()) return 8;
return QString::number(maxaddr, 16).size();
}
int QHexView::visibleLines(bool absolute) const
{
int vl = static_cast<int>(qCeil(this->viewport()->height() / this->lineHeight()));
if(!m_options.hasFlag(QHexFlags::NoHeader)) vl--;
return absolute ? vl : qMin<int>(this->lines(), vl);
}
qint64 QHexView::getLastColumn(qint64 line) const { return this->getLine(line).size() - 1; }
qint64 QHexView::lastLine() const { return qMax<qint64>(0, this->lines() - 1); }
qreal QHexView::hexColumnWidth() const
{
int l = 0;
for(auto i = 0u; i < m_options.linelength; i += m_options.grouplength)
l += (2 * m_options.grouplength) + 1;
return this->getNCellsWidth(l);
}
unsigned int QHexView::addressWidth() const
{
if(!m_hexdocument || m_options.addresswidth) return m_options.addresswidth;
return this->calcAddressWidth();
}
unsigned int QHexView::lineLength() const { return m_options.linelength; }
bool QHexView::canUndo() const { return m_hexdocument && m_hexdocument->canUndo(); }
bool QHexView::canRedo() const { return m_hexdocument && m_hexdocument->canRedo(); }
quint64 QHexView::offset() const { return m_hexcursor->offset(); }
quint64 QHexView::address() const { return m_hexcursor->address(); }
QHexPosition QHexView::position() const { return m_hexcursor->position(); }
QHexPosition QHexView::selectionStart() const { return m_hexcursor->selectionStart(); }
QHexPosition QHexView::selectionEnd() const { return m_hexcursor->selectionEnd(); }
quint64 QHexView::selectionStartOffset() const { return m_hexcursor->selectionStartOffset(); }
quint64 QHexView::selectionEndOffset() const { return m_hexcursor->selectionEndOffset(); }
quint64 QHexView::baseAddress() const { return m_options.baseaddress; }
quint64 QHexView::lines() const
{
if(!m_hexdocument) return 0;
auto lines = static_cast<quint64>(qCeil(m_hexdocument->length() / static_cast<double>(m_options.linelength)));
return !m_hexdocument->isEmpty() && !lines ? 1 : lines;
}
qint64 QHexView::replace(const QVariant& oldvalue, const QVariant& newvalue, qint64 offset, QHexFindMode mode, unsigned int options, QHexFindDirection fd) const
{
auto res = QHexUtils::replace(this, oldvalue, newvalue, offset, mode, options, fd);
if(res.first > -1)
{
m_hexcursor->move(res.first);
m_hexcursor->selectSize(res.second);
}
return res.first;
}
qint64 QHexView::find(const QVariant& value, qint64 offset, QHexFindMode mode, unsigned int options, QHexFindDirection fd) const
{
auto res = QHexUtils::find(this, value, offset, mode, options, fd);
if(res.first > -1)
{
m_hexcursor->move(res.first);
m_hexcursor->selectSize(res.second);
}
return res.first;
}
qreal QHexView::hexColumnX() const { return this->getNCellsWidth(this->addressWidth() + 2); }
qreal QHexView::asciiColumnX() const { return this->hexColumnX() + this->hexColumnWidth() + this->cellWidth(); }
qreal QHexView::endColumnX() const { return this->asciiColumnX() + this->getNCellsWidth(m_options.linelength + 1) + this->cellWidth(); }
qreal QHexView::getNCellsWidth(int n) const { return n * this->cellWidth(); }
qreal QHexView::cellWidth() const
{
#if QT_VERSION >= QT_VERSION_CHECK(5, 11, 0)
return m_fontmetrics.horizontalAdvance(" ");
#else
return m_fontmetrics.width(" ");
#endif
}
qreal QHexView::lineHeight() const { return m_fontmetrics.height(); }
QHexPosition QHexView::positionFromPoint(QPoint pt) const
{
QHexPosition pos = QHexPosition::invalid();
auto abspt = this->absolutePoint(pt);
switch(this->areaFromPoint(pt))
{
case QHexArea::Hex: {
pos.column = -1;
for(qint64 i = 0; i < m_hexcolumns.size(); i++) {
if(m_hexcolumns.at(i).left() > abspt.x()) break;
pos.column = i;
}
break;
}
case QHexArea::Ascii: pos.column = qMax<qint64>(qFloor((abspt.x() - this->asciiColumnX()) / this->cellWidth()) - 1, 0); break;
case QHexArea::Address: pos.column = 0; break;
case QHexArea::Header: return QHexPosition::invalid();
default: break;
}
pos.line = qMin<qint64>(this->verticalScrollBar()->value() + (abspt.y() / this->lineHeight()), this->lines());
if(!m_options.hasFlag(QHexFlags::NoHeader)) pos.line = qMax<qint64>(0, pos.line - 1);
auto docline = this->getLine(pos.line);
pos.column = qMin<qint64>(pos.column, docline.isEmpty() ? 0 : docline.size());
qhexview_fmtprint("line: %lld, col: %lld", pos.line, pos.column);
return pos;
}
QPoint QHexView::absolutePoint(QPoint pt) const { return pt + QPoint(this->horizontalScrollBar()->value(), 0); }
QHexArea QHexView::areaFromPoint(QPoint pt) const
{
pt = this->absolutePoint(pt);
qreal line = this->verticalScrollBar()->value() + pt.y() / this->lineHeight();
if(!m_options.hasFlag(QHexFlags::NoHeader) && !qFloor(line)) return QHexArea::Header;
if(pt.x() < this->hexColumnX()) return QHexArea::Address;
if(pt.x() < this->asciiColumnX()) return QHexArea::Hex;
if(pt.x() < this->endColumnX()) return QHexArea::Ascii;
return QHexArea::Extra;
}
QTextCharFormat QHexView::drawFormat(QTextCursor& c, quint8 b, const QString& s, QHexArea area, qint64 line, qint64 column, bool applyformat) const
{
QTextCharFormat cf, selcf;
QHexPosition pos{line, column};
if(applyformat)
{
auto offset = m_hexcursor->positionToOffset(pos);
bool hasdelegate = m_hexdelegate && m_hexdelegate->render(offset, b, cf, this);
if(!hasdelegate)
{
auto it = m_options.bytecolors.find(b);
if(it != m_options.bytecolors.end())
{
if(it->background.isValid()) cf.setBackground(it->background);
if(it->foreground.isValid()) cf.setForeground(it->foreground);
}
}
const auto* metadataline = m_hexmetadata->find(line);
if(metadataline)
{
for(const auto& metadata : *metadataline)
{
if(offset < metadata.begin || offset >= metadata.end) continue;
if(!hasdelegate)
{
if(metadata.foreground.isValid()) cf.setForeground(metadata.foreground);
if(metadata.background.isValid())
{
cf.setBackground(metadata.background);
if(!metadata.foreground.isValid())
cf.setForeground(this->getReadableColor(metadata.background));
}
}
if(!metadata.comment.isEmpty())
{
cf.setUnderlineColor(m_options.commentcolor.isValid() ? m_options.commentcolor : this->palette().color(QPalette::WindowText));
cf.setUnderlineStyle(QTextCharFormat::UnderlineStyle::SingleUnderline);
}
if(offset == metadata.begin) // Remove previous metadata's style, if needed
{
if(metadata.comment.isEmpty()) selcf.setUnderlineStyle(QTextCharFormat::UnderlineStyle::NoUnderline);
if(!metadata.foreground.isValid()) selcf.setForeground(Qt::color1);
if(!metadata.background.isValid()) selcf.setBackground(Qt::transparent);
}
if(offset < metadata.end - 1 && column < this->getLastColumn(line))
selcf = cf;
}
}
if(hasdelegate && column < this->getLastColumn(line)) selcf = cf;
}
if(this->hexCursor()->isSelected(line, column))
{
auto offset = this->hexCursor()->positionToOffset(pos);
auto selend = this->hexCursor()->selectionEndOffset();
cf.setBackground(this->palette().color(QPalette::Normal, QPalette::Highlight));
cf.setForeground(this->palette().color(QPalette::Normal, QPalette::HighlightedText));
if(offset < selend && column < this->getLastColumn(line)) selcf = cf;
}
if(this->hexCursor()->position() == pos)
{
auto cursorbg = this->palette().color(this->hasFocus() ? QPalette::Normal : QPalette::Disabled, QPalette::WindowText);
auto cursorfg = this->palette().color(this->hasFocus() ? QPalette::Normal : QPalette::Disabled, QPalette::Base);
auto discursorbg = this->palette().color(QPalette::Disabled, QPalette::WindowText);
auto discursorfg = this->palette().color(QPalette::Disabled, QPalette::Base);
switch(m_hexcursor->mode())
{
case QHexCursor::Mode::Insert:
cf.setUnderlineColor(m_currentarea == area ? cursorbg : discursorbg);
cf.setUnderlineStyle(QTextCharFormat::UnderlineStyle::SingleUnderline);
break;
case QHexCursor::Mode::Overwrite:
cf.setBackground(m_currentarea == area ? cursorbg : discursorbg);
cf.setForeground(m_currentarea == area ? cursorfg : discursorfg);
break;
}
}
c.insertText(s, cf);
return selcf;
}
void QHexView::moveNext(bool select)
{
auto line = this->hexCursor()->line(), column = this->hexCursor()->column();
if(column >= m_options.linelength - 1)
{
line++;
column = 0;
}
else
column++;
qint64 offset = this->hexCursor()->mode() == QHexCursor::Mode::Insert ? 1 : 0;
if(select) this->hexCursor()->select(qMin<qint64>(line, this->lines()), qMin<qint64>(column, this->getLastColumn(line) + offset));
else this->hexCursor()->move(qMin<qint64>(line, this->lines()), qMin<qint64>(column, this->getLastColumn(line) + offset));
}
void QHexView::movePrevious(bool select)
{
auto line = this->hexCursor()->line(), column = this->hexCursor()->column();
if(column <= 0)
{
if(!line) return;
column = this->getLine(--line).size() - 1;
}
else
column--;
if(select) this->hexCursor()->select(qMin<qint64>(line, this->lines()), qMin<qint64>(column, this->getLastColumn(line)));
else this->hexCursor()->move(qMin<qint64>(line, this->lines()), qMin<qint64>(column, this->getLastColumn(line)));
}
bool QHexView::keyPressMove(QKeyEvent* e)
{
if(e->matches(QKeySequence::MoveToNextChar) || e->matches(QKeySequence::SelectNextChar))
this->moveNext(e->matches(QKeySequence::SelectNextChar));
else if(e->matches(QKeySequence::MoveToPreviousChar) || e->matches(QKeySequence::SelectPreviousChar))
this->movePrevious(e->matches(QKeySequence::SelectPreviousChar));
else if(e->matches(QKeySequence::MoveToNextLine) || e->matches(QKeySequence::SelectNextLine))
{
if(this->hexCursor()->line() == this->lastLine()) return true;
auto nextline = this->hexCursor()->line() + 1;
if(e->matches(QKeySequence::MoveToNextLine)) this->hexCursor()->move(nextline, this->hexCursor()->column());
else this->hexCursor()->select(nextline, this->hexCursor()->column());
}
else if(e->matches(QKeySequence::MoveToPreviousLine) || e->matches(QKeySequence::SelectPreviousLine))
{
if(!this->hexCursor()->line()) return true;
auto prevline = this->hexCursor()->line() - 1;
if(e->matches(QKeySequence::MoveToPreviousLine)) this->hexCursor()->move(prevline, this->hexCursor()->column());
else this->hexCursor()->select(prevline, this->hexCursor()->column());
}
else if(e->matches(QKeySequence::MoveToNextPage) || e->matches(QKeySequence::SelectNextPage))
{
if(this->lastLine() == this->hexCursor()->line()) return true;
auto pageline = qMin(this->lastLine(), this->hexCursor()->line() + this->visibleLines());
if(e->matches(QKeySequence::MoveToNextPage)) this->hexCursor()->move(pageline, this->hexCursor()->column());
else this->hexCursor()->select(pageline, this->hexCursor()->column());
}
else if(e->matches(QKeySequence::MoveToPreviousPage) || e->matches(QKeySequence::SelectPreviousPage))
{
if(!this->hexCursor()->line()) return true;
auto pageline = qMax<qint64>(0, this->hexCursor()->line() - this->visibleLines());
if(e->matches(QKeySequence::MoveToPreviousPage)) this->hexCursor()->move(pageline, this->hexCursor()->column());
else this->hexCursor()->select(pageline, this->hexCursor()->column());
}
else if(e->matches(QKeySequence::MoveToStartOfDocument) || e->matches(QKeySequence::SelectStartOfDocument))
{
if(!this->hexCursor()->line()) return true;
if(e->matches(QKeySequence::MoveToStartOfDocument)) this->hexCursor()->move(0, 0);
else this->hexCursor()->select(0, 0);
}
else if(e->matches(QKeySequence::MoveToEndOfDocument) || e->matches(QKeySequence::SelectEndOfDocument))
{
if(this->lastLine() == this->hexCursor()->line()) return true;
if(e->matches(QKeySequence::MoveToEndOfDocument)) this->hexCursor()->move(this->lastLine(), this->getLastColumn(this->hexCursor()->line()));
else this->hexCursor()->select(this->lastLine(), this->getLastColumn(this->lastLine()));
}
else if(e->matches(QKeySequence::MoveToStartOfLine) || e->matches(QKeySequence::SelectStartOfLine))
{
auto offset = this->hexCursor()->positionToOffset({this->hexCursor()->line(), 0});
if(e->matches(QKeySequence::MoveToStartOfLine)) this->hexCursor()->move(offset);
else this->hexCursor()->select(offset);
}
else if(e->matches(QKeySequence::SelectEndOfLine) || e->matches(QKeySequence::MoveToEndOfLine))