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/*************************************************************************
* Copyright (c) 2011 AT&T Intellectual Property
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Details at https://graphviz.org
*************************************************************************/
#include "mdichild.h"
#include "mainwindow.h"
#include <QtGlobal>
#include <QtWidgets>
#include <memory>
MdiChild::MdiChild() {
setAttribute(Qt::WA_DeleteOnClose);
isUntitled = true;
layoutIdx = 0;
renderIdx = 0;
preview = true;
applyCairo = false;
settingsSet = false;
}
void MdiChild::newFile() {
static int sequenceNumber = 1;
isUntitled = true;
curFile = tr("graph%1.gv").arg(sequenceNumber++);
setWindowTitle(curFile + QLatin1String("[*]"));
connect(document(), &QTextDocument::contentsChange, this,
&MdiChild::documentWasModified);
}
bool MdiChild::loadFile(const QString &fileName) {
QFile file(fileName);
if (!file.open(QFile::ReadOnly | QFile::Text)) {
QMessageBox::warning(
this, tr("MDI"),
tr("Cannot read file %1:\n%2.").arg(fileName).arg(file.errorString()));
return false;
}
QTextStream in(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
setPlainText(in.readAll());
QApplication::restoreOverrideCursor();
setCurrentFile(fileName);
connect(document(), &QTextDocument::contentsChange, this,
&MdiChild::documentWasModified);
return true;
}
bool MdiChild::save() {
if (isUntitled) {
return saveAs();
}
return saveFile(curFile);
}
bool MdiChild::saveAs() {
QString fileName = QFileDialog::getSaveFileName(this, tr("Save As"), curFile);
if (fileName.isEmpty())
return false;
return saveFile(fileName);
}
bool MdiChild::saveFile(const QString &fileName) {
QFile file(fileName);
if (!file.open(QFile::WriteOnly | QFile::Text)) {
QMessageBox::warning(
this, tr("MDI"),
tr("Cannot write file %1:\n%2.").arg(fileName).arg(file.errorString()));
return false;
}
QTextStream out(&file);
QApplication::setOverrideCursor(Qt::WaitCursor);
#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
out.setCodec("UTF-8");
#endif
out << toPlainText();
out.flush();
QApplication::restoreOverrideCursor();
setCurrentFile(fileName);
return true;
}
QString MdiChild::userFriendlyCurrentFile() { return strippedName(curFile); }
void MdiChild::closeEvent(QCloseEvent *event) {
if (maybeSave()) {
event->accept();
} else {
event->ignore();
}
}
void MdiChild::documentWasModified() {
setWindowModified(document()->isModified());
}
bool MdiChild::maybeSave() {
if (document()->isModified()) {
QMessageBox::StandardButton ret;
ret = QMessageBox::warning(this, tr("MDI"),
tr("'%1' has been modified.\n"
"Do you want to save your changes?")
.arg(userFriendlyCurrentFile()),
QMessageBox::Save | QMessageBox::Discard |
QMessageBox::Cancel);
if (ret == QMessageBox::Save)
return save();
if (ret == QMessageBox::Cancel)
return false;
}
return true;
}
void MdiChild::setCurrentFile(const QString &fileName) {
curFile = QFileInfo(fileName).canonicalFilePath();
isUntitled = false;
document()->setModified(false);
setWindowModified(false);
setWindowTitle(userFriendlyCurrentFile() + QLatin1String("[*]"));
}
QString MdiChild::strippedName(const QString &fullFileName) {
return QFileInfo(fullFileName).fileName();
}
bool MdiChild::loadPreview(const QString &fileName) {
if (previewFrm == nullptr) {
previewFrm = std::make_unique<ImageViewer>();
previewFrm->graphWindow = this;
QMdiSubWindow *s = parentFrm->mdiArea->addSubWindow(previewFrm.get());
s->resize(600, 400);
s->move(parentFrm->mdiArea->subWindowList().count() * 5,
parentFrm->mdiArea->subWindowList().count() * 5);
previewFrm->subWindowRef = s;
}
bool rv = previewFrm->open(fileName);
if (rv)
previewFrm->show();
return rv;
}
bool MdiChild::firstTime() { return settingsSet; }
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