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Diffstat (limited to 'src/gui/previewwindow.cpp')
| -rw-r--r-- | src/gui/previewwindow.cpp | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/src/gui/previewwindow.cpp b/src/gui/previewwindow.cpp new file mode 100644 index 0000000..2f47efd --- /dev/null +++ b/src/gui/previewwindow.cpp @@ -0,0 +1,208 @@ +/* + 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 "previewwindow.h" +#include "ui_previewwindow.h" + +#include "tikzit.h" +#include "latexprocess.h" +#include "exportdialog.h" + +#include <QLabel> +#include <QImage> +#include <QPixmap> +#include <QDebug> +#include <QSettings> +#include <QTemporaryDir> +#include <QFile> +#include <QTextStream> +#include <QStandardPaths> +#include <QMessageBox> +#include <cmath> +#include <QMovie> +#include <QAction> + +PreviewWindow::PreviewWindow(QWidget *parent) : + QDialog(parent), + ui(new Ui::PreviewWindow) +{ + QSettings settings("tikzit", "tikzit"); + ui->setupUi(this); + + QVariant geom = settings.value("geometry-preview"); + + if (geom.isValid()) { + restoreGeometry(geom.toByteArray()); + } + + _doc = nullptr; + + _loader = new QLabel(ui->tabWidget->tabBar()); + _loader->setMinimumSize(QSize(16,16)); + _loader->setMaximumSize(QSize(16,16)); + _loader->setAutoFillBackground(false); + ui->tabWidget->tabBar()->setTabButton(1, QTabBar::RightSide, _loader); + + connect(ui->tabWidget, SIGNAL(currentChanged(int)), + this, SLOT(render())); + + render(); +} + +void PreviewWindow::contextMenuEvent(QContextMenuEvent *event) +{ + QMenu menu(this); + QAction *act; + + act = new QAction("Export Image..."); + connect(act, SIGNAL(triggered()), this, SLOT(exportImage())); + menu.addAction(act); + + act = new QAction("Copy to Clipboard"); + connect(act, SIGNAL(triggered()), this, SLOT(copyImageToClipboard())); + menu.addAction(act); + + menu.exec(event->globalPos()); +} + +PdfDocument *PreviewWindow::doc() const +{ + return _doc; +} + +PreviewWindow::~PreviewWindow() +{ + delete ui; +} + +void PreviewWindow::setPdf(QString file) +{ + // use loadFromData to avoid holding a lock on the PDF file in windows + //QFile f(file); + //f.open(QFile::ReadOnly); + //QByteArray data = f.readAll(); + //f.close(); + PdfDocument *newDoc = new PdfDocument(file, this); + + if (newDoc->isValid()) { + PdfDocument *oldDoc = _doc; + _doc = newDoc; + if (oldDoc != nullptr) delete oldDoc; + render(); + } else { + QMessageBox::warning(nullptr, + "Could not read PDF", + "Could not read: '" + file + "'."); + delete newDoc; + } +} + +QPlainTextEdit *PreviewWindow::outputTextEdit() +{ + return ui->output; +} + +void PreviewWindow::setStatus(PreviewWindow::Status status) +{ + QMovie *oldMovie = _loader->movie(); + if (status == PreviewWindow::Running) { + // loader.gif and loader@2x.gif derived from: + // https://commons.wikimedia.org/wiki/Throbbers#/media/File:Linux_Ubuntu_Loader.gif + // licensed GNU Free Documentation License v1.2 + QMovie *movie = new QMovie( + (devicePixelRatioF() > 1.0) ? ":images/loader@2x.gif" : ":images/loader.gif", + QByteArray(), _loader); + _loader->setPixmap(QPixmap()); + _loader->setMovie(movie); + movie->start(); + } else if (status == PreviewWindow::Success) { + _loader->setMovie(nullptr); + QIcon accept(":images/dialog-accept.svg"); + //accept.setDevicePixelRatio(devicePixelRatio()); + _loader->setPixmap(accept.pixmap(QSize(16,16))); + } else if (status == PreviewWindow::Failed) { + _loader->setMovie(nullptr); + QIcon error(":images/dialog-error.svg"); + //error.setDevicePixelRatio(devicePixelRatio()); + _loader->setPixmap(error.pixmap(QSize(16,16))); + } + + if (oldMovie != nullptr) oldMovie->deleteLater(); + + + _loader->repaint(); +} + +void PreviewWindow::closeEvent(QCloseEvent *e) { + QSettings settings("tikzit", "tikzit"); + settings.setValue("geometry-preview", saveGeometry()); + QDialog::closeEvent(e); +} + +void PreviewWindow::resizeEvent(QResizeEvent *e) { + render(); + QDialog::resizeEvent(e); +} + +void PreviewWindow::showEvent(QShowEvent *e) { + render(); + QDialog::showEvent(e); +} + +void PreviewWindow::render() { + if (_doc != nullptr) { + _doc->renderTo(ui->pdf, + ui->scrollArea->visibleRegion().boundingRect()); + ui->pdf->repaint(); + } +} + +void PreviewWindow::exportImage() +{ + QSettings settings("tikzit", "tikzit"); + if (_doc == nullptr) return; + ExportDialog *d = new ExportDialog(this); + int ret = d->exec(); + if (ret == QDialog::Accepted) { + bool success; + if (d->fileFormat() == ExportDialog::PDF) { + success = _doc->exportPdf(d->filePath()); + } else { + success = _doc->exportImage( + d->filePath(), + (d->fileFormat() == ExportDialog::PNG) ? "PNG" : "JPG", + d->size()); + } + + if (!success) { + QMessageBox::warning(this, + "Error", + "Could not write to: '" + d->filePath() + + "'. Check file permissions or choose a new location."); + } + } +} + +void PreviewWindow::copyImageToClipboard() +{ + if (_doc != nullptr) { + _doc->copyImageToClipboard(_doc->size() * 4); + } +} + + |