143 lines
4.6 KiB
C++
143 lines
4.6 KiB
C++
/* ----------------------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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https://www.lammps.org/, Sandia National Laboratories
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LAMMPS development team: developers@lammps.org
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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------------------------------------------------------------------------- */
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#include "fileviewer.h"
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#include "lammpsgui.h"
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#include <QApplication>
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#include <QFile>
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#include <QFileInfo>
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#include <QIcon>
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#include <QKeySequence>
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#include <QProcess>
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#include <QSettings>
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#include <QShortcut>
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#include <QString>
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#include <QStringList>
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#include <QTextCursor>
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#include <QTextStream>
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FileViewer::FileViewer(const QString &_filename, QWidget *parent) :
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QPlainTextEdit(parent), fileName(_filename)
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{
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auto *action = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Q), this);
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connect(action, &QShortcut::activated, this, &FileViewer::quit);
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action = new QShortcut(QKeySequence(Qt::CTRL | Qt::Key_Slash), this);
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connect(action, &QShortcut::activated, this, &FileViewer::stop_run);
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installEventFilter(this);
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// open and read file. Set editor to read-only.
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QFile file(fileName);
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QFileInfo finfo(file);
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QString command;
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QString content;
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QProcess decomp;
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QStringList args = {"-cdf", fileName};
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bool compressed = false;
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// match suffix with decompression program
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if (finfo.suffix() == "gz") {
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command = "gizp";
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compressed = true;
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} else if (finfo.suffix() == "bz2") {
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command = "bzip2";
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compressed = true;
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} else if (finfo.suffix() == "zst") {
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command = "zstd";
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compressed = true;
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} else if (finfo.suffix() == "xz") {
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command = "xz";
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compressed = true;
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} else if (finfo.suffix() == "lzma") {
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command = "xz";
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args.insert(1, "--format=lzma");
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compressed = true;
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} else if (finfo.suffix() == "lz4") {
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command = "lz4";
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compressed = true;
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}
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// read compressed file from pipe
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if (compressed) {
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decomp.start(command, args, QIODevice::ReadOnly);
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if (decomp.waitForStarted()) {
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while (decomp.waitForReadyRead())
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content += decomp.readAll();
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} else {
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content = "\nCould not open compressed file %1 with decompression program %2\n";
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content = content.arg(fileName).arg(command);
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}
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decomp.close();
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} else if (file.open(QIODevice::Text | QIODevice::ReadOnly)) {
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// read plain text
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QTextStream in(&file);
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content = in.readAll();
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file.close();
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}
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QFont text_font;
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QSettings settings;
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text_font.fromString(settings.value("textfont", text_font.toString()).toString());
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document()->setDefaultFont(text_font);
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document()->setPlainText(content);
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moveCursor(QTextCursor::Start, QTextCursor::MoveAnchor);
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setReadOnly(true);
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setLineWrapMode(NoWrap);
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setMinimumSize(800, 500);
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setWindowIcon(QIcon(":/icons/lammps-icon-128x128.png"));
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setWindowTitle("LAMMPS-GUI - Viewer - " + fileName);
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}
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void FileViewer::quit()
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{
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LammpsGui *main = nullptr;
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for (QWidget *widget : QApplication::topLevelWidgets())
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if (widget->objectName() == "LammpsGui") main = dynamic_cast<LammpsGui *>(widget);
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if (main) main->quit();
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}
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void FileViewer::stop_run()
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{
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LammpsGui *main = nullptr;
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for (QWidget *widget : QApplication::topLevelWidgets())
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if (widget->objectName() == "LammpsGui") main = dynamic_cast<LammpsGui *>(widget);
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if (main) main->stop_run();
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}
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// event filter to handle "Ambiguous shortcut override" issues
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bool FileViewer::eventFilter(QObject *watched, QEvent *event)
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{
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if (event->type() == QEvent::ShortcutOverride) {
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auto *keyEvent = dynamic_cast<QKeyEvent *>(event);
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if (!keyEvent) return QWidget::eventFilter(watched, event);
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if (keyEvent->modifiers().testFlag(Qt::ControlModifier) && keyEvent->key() == '/') {
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stop_run();
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event->accept();
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return true;
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}
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if (keyEvent->modifiers().testFlag(Qt::ControlModifier) && keyEvent->key() == 'W') {
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close();
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event->accept();
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return true;
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}
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}
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return QWidget::eventFilter(watched, event);
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}
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// Local Variables:
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// c-basic-offset: 4
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// End:
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