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/*
TikZiT - a GUI diagram editor for TikZ
Copyright (C) 2018 Aleks Kissinger
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <QFile>
#include <QFileInfo>
#include <QSettings>
#include <QTextStream>
#include <QMessageBox>
#include <QFileDialog>
#include "tikzit.h"
#include "tikzdocument.h"
#include "tikzassembler.h"
#include "mainwindow.h"
TikzDocument::TikzDocument(QObject *parent) : QObject(parent)
{
_graph = new Graph(this);
_parseSuccess = true;
_fileName = "";
_shortName = "";
_undoStack = new QUndoStack(this);
_undoStack->setClean();
}
QUndoStack *TikzDocument::undoStack() const
{
return _undoStack;
}
Graph *TikzDocument::graph() const
{
return _graph;
}
QString TikzDocument::tikz() const
{
return _tikz;
}
void TikzDocument::open(QString fileName)
{
_fileName = fileName;
QFile file(fileName);
QFileInfo fi(file);
_shortName = fi.fileName();
QSettings settings("tikzit", "tikzit");
settings.setValue("previous-file-path", fi.absolutePath());
if (!file.open(QIODevice::ReadOnly)) {
// QMessageBox::critical(this, tr("Error"),
// tr("Could not open file"));
_parseSuccess = false;
return;
}
addToRecentFiles();
QTextStream in(&file);
_tikz = in.readAll();
file.close();
Graph *oldGraph = _graph;
Graph *newGraph = new Graph(this);
TikzAssembler ass(newGraph);
if (ass.parse(_tikz)) {
_graph = newGraph;
oldGraph->deleteLater();
foreach (Node *n, _graph->nodes()) n->attachStyle();
foreach (Edge *e, _graph->edges()) {
e->attachStyle();
e->updateControls();
}
_parseSuccess = true;
refreshTikz();
setClean();
} else {
newGraph->deleteLater();
_parseSuccess = false;
}
}
bool TikzDocument::save() {
if (_fileName == "") {
return saveAs();
} else {
MainWindow *win = tikzit->activeWindow();
if (win != nullptr && !win->tikzScene()->enabled()) {
win->tikzScene()->parseTikz(win->tikzSource());
if (!win->tikzScene()->enabled()) {
auto resp = QMessageBox::question(nullptr,
tr("Tikz failed to parse"),
tr("Cannot save file with invalid TiKZ source. Revert changes and save?"));
if (resp == QMessageBox::Yes) win->tikzScene()->setEnabled(true);
else return false; // ABORT the save
}
}
refreshTikz();
QFile file(_fileName);
QFileInfo fi(file);
_shortName = fi.fileName();
QSettings settings("tikzit", "tikzit");
settings.setValue("previous-file-path", fi.absolutePath());
if (file.open(QIODevice::WriteOnly)) {
QTextStream stream(&file);
stream << _tikz;
file.close();
setClean();
return true;
} else {
QMessageBox::warning(nullptr,
"Save Failed", "Could not open file: '" + _fileName + "' for writing.");
}
}
return false;
}
bool TikzDocument::isClean() const
{
return _undoStack->isClean();
}
void TikzDocument::setClean()
{
_undoStack->setClean();
}
QString TikzDocument::fileName() const
{
return _fileName;
}
bool TikzDocument::isEmpty()
{
return _graph->nodes().isEmpty();
}
void TikzDocument::addToRecentFiles()
{
QSettings settings("tikzit", "tikzit");
if (!_fileName.isEmpty()) {
QStringList recentFiles = settings.value("recent-files").toStringList();
// if the file is in the list already, shift it to the top. Otherwise, add it.
recentFiles.removeAll(_fileName);
recentFiles.prepend(_fileName);
// keep max 10 files
while (recentFiles.size() > 10) recentFiles.removeLast();
settings.setValue("recent-files", recentFiles);
tikzit->updateRecentFiles();
}
}
void TikzDocument::setGraph(Graph *graph)
{
_graph = graph;
refreshTikz();
}
bool TikzDocument::saveAs() {
MainWindow *win = tikzit->activeWindow();
if (win != nullptr && !win->tikzScene()->enabled()) {
win->tikzScene()->parseTikz(win->tikzSource());
if (!win->tikzScene()->enabled()) {
auto resp = QMessageBox::question(nullptr,
tr("Tikz failed to parse"),
tr("Cannot save file with invalid TiKZ source. Revert changes and save?"));
if (resp == QMessageBox::Yes) win->tikzScene()->setEnabled(true);
else return false; // ABORT the save
}
}
QSettings settings("tikzit", "tikzit");
QFileDialog dialog;
dialog.setDefaultSuffix("tikz");
dialog.setWindowTitle(tr("Save File As"));
dialog.setAcceptMode(QFileDialog::AcceptSave);
dialog.setNameFilter(tr("TiKZ Files (*.tikz)"));
dialog.setFileMode(QFileDialog::AnyFile);
dialog.setDirectory(settings.value("previous-file-path").toString());
dialog.setOption(QFileDialog::DontUseNativeDialog);
if (dialog.exec() && !dialog.selectedFiles().isEmpty()) {
QString fileName = dialog.selectedFiles()[0];
_fileName = fileName;
if (save()) {
// clean state might not change, so update title bar manually
tikzit->activeWindow()->updateFileName();
addToRecentFiles();
return true;
}
}
return false;
}
QString TikzDocument::shortName() const
{
return _shortName;
}
bool TikzDocument::parseSuccess() const
{
return _parseSuccess;
}
void TikzDocument::refreshTikz()
{
_tikz = _graph->tikz();
if (MainWindow *w = dynamic_cast<MainWindow*>(parent()))
w->refreshTikz();
}
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