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// Copyright (C) 2017 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#include "mainwindow.h"
#include "exportdialog.h"
#include <QtWidgets>
#include <QSvgRenderer>
#include "svgview.h"
static inline QString picturesLocation()
{
return QStandardPaths::standardLocations(QStandardPaths::PicturesLocation).value(0, QDir::currentPath());
}
MainWindow::MainWindow()
: QMainWindow()
, m_view(new SvgView)
, m_zoomLabel(new QLabel)
{
QToolBar *toolBar = new QToolBar(this);
addToolBar(Qt::TopToolBarArea, toolBar);
QMenu *fileMenu = menuBar()->addMenu(tr("&File"));
const QIcon openIcon = QIcon::fromTheme("document-open", QIcon(":/qt-project.org/styles/commonstyle/images/standardbutton-open-32.png"));
QAction *openAction = fileMenu->addAction(openIcon, tr("&Open..."), this, &MainWindow::openFile);
openAction->setShortcut(QKeySequence::Open);
toolBar->addAction(openAction);
const QIcon exportIcon = QIcon::fromTheme("document-save", QIcon(":/qt-project.org/styles/commonstyle/images/standardbutton-save-32.png"));
QAction *exportAction = fileMenu->addAction(exportIcon, tr("&Export..."), this, &MainWindow::exportImage);
exportAction->setToolTip(tr("Export Image"));
exportAction->setShortcut(Qt::CTRL + Qt::Key_E);
toolBar->addAction(exportAction);
QAction *quitAction = fileMenu->addAction(tr("E&xit"), qApp, QCoreApplication::quit);
quitAction->setShortcuts(QKeySequence::Quit);
QMenu *viewMenu = menuBar()->addMenu(tr("&View"));
m_backgroundAction = viewMenu->addAction(tr("&Background"));
m_backgroundAction->setEnabled(false);
m_backgroundAction->setCheckable(true);
m_backgroundAction->setChecked(false);
connect(m_backgroundAction, &QAction::toggled, m_view, &SvgView::setViewBackground);
m_outlineAction = viewMenu->addAction(tr("&Outline"));
m_outlineAction->setEnabled(false);
m_outlineAction->setCheckable(true);
m_outlineAction->setChecked(true);
connect(m_outlineAction, &QAction::toggled, m_view, &SvgView::setViewOutline);
viewMenu->addSeparator();
QAction *zoomAction = viewMenu->addAction(tr("Zoom &In"), m_view, &SvgView::zoomIn);
zoomAction->setShortcut(QKeySequence::ZoomIn);
zoomAction = viewMenu->addAction(tr("Zoom &Out"), m_view, &SvgView::zoomOut);
zoomAction->setShortcut(QKeySequence::ZoomOut);
zoomAction = viewMenu->addAction(tr("Reset Zoom"), m_view, &SvgView::resetZoom);
zoomAction->setShortcut(Qt::CTRL + Qt::Key_0);
QMenu *rendererMenu = menuBar()->addMenu(tr("&Renderer"));
m_nativeAction = rendererMenu->addAction(tr("&Native"));
m_nativeAction->setCheckable(true);
m_nativeAction->setChecked(true);
m_nativeAction->setData(int(SvgView::Native));
#ifdef USE_OPENGLWIDGETS
m_glAction = rendererMenu->addAction(tr("&OpenGL"));
m_glAction->setCheckable(true);
m_glAction->setData(int(SvgView::OpenGL));
#endif
m_imageAction = rendererMenu->addAction(tr("&Image"));
m_imageAction->setCheckable(true);
m_imageAction->setData(int(SvgView::Image));
rendererMenu->addSeparator();
m_antialiasingAction = rendererMenu->addAction(tr("&Antialiasing"));
m_antialiasingAction->setCheckable(true);
m_antialiasingAction->setChecked(false);
connect(m_antialiasingAction, &QAction::toggled, m_view, &SvgView::setAntialiasing);
QActionGroup *rendererGroup = new QActionGroup(this);
rendererGroup->addAction(m_nativeAction);
#ifdef USE_OPENGLWIDGETS
rendererGroup->addAction(m_glAction);
#endif
rendererGroup->addAction(m_imageAction);
menuBar()->addMenu(rendererMenu);
connect(rendererGroup, &QActionGroup::triggered,
[this] (QAction *a) { setRenderer(a->data().toInt()); });
QMenu *help = menuBar()->addMenu(tr("&Help"));
help->addAction(tr("About Qt"), qApp, &QApplication::aboutQt);
setCentralWidget(m_view);
m_zoomLabel->setToolTip(tr("Use the mouse wheel to zoom"));
statusBar()->addPermanentWidget(m_zoomLabel);
updateZoomLabel();
connect(m_view, &SvgView::zoomChanged, this, &MainWindow::updateZoomLabel);
}
void MainWindow::openFile()
{
QFileDialog fileDialog(this);
fileDialog.setAcceptMode(QFileDialog::AcceptOpen);
fileDialog.setMimeTypeFilters(QStringList() << "image/svg+xml" << "image/svg+xml-compressed");
fileDialog.setWindowTitle(tr("Open SVG File"));
if (m_currentPath.isEmpty())
fileDialog.setDirectory(picturesLocation());
while (fileDialog.exec() == QDialog::Accepted && !loadFile(fileDialog.selectedFiles().constFirst()))
;
}
bool MainWindow::loadFile(const QString &fileName)
{
if (!QFileInfo::exists(fileName) || !m_view->openFile(fileName)) {
QMessageBox::critical(this, tr("Open SVG File"),
tr("Could not open file '%1'.").arg(QDir::toNativeSeparators(fileName)));
return false;
}
if (!fileName.startsWith(":/")) {
m_currentPath = fileName;
setWindowFilePath(fileName);
const QSize size = m_view->svgSize();
const QString message =
tr("Opened %1, %2x%3").arg(QFileInfo(fileName).fileName()).arg(size.width()).arg(size.width());
statusBar()->showMessage(message);
}
m_outlineAction->setEnabled(true);
m_backgroundAction->setEnabled(true);
const QSize availableSize = this->screen()->availableGeometry().size();
resize(m_view->sizeHint().expandedTo(availableSize / 4) + QSize(80, 80 + menuBar()->height()));
return true;
}
void MainWindow::setRenderer(int renderMode)
{
m_view->setRenderer(static_cast<SvgView::RendererType>(renderMode));
}
void MainWindow::exportImage()
{
ExportDialog exportDialog(this);
exportDialog.setExportSize(m_view->svgSize());
QString fileName;
if (m_currentPath.isEmpty()) {
fileName = picturesLocation() + QLatin1String("/export.png");
} else {
const QFileInfo fi(m_currentPath);
fileName = fi.absolutePath() + QLatin1Char('/') + fi.baseName() + QLatin1String(".png");
}
exportDialog.setExportFileName(fileName);
while (true) {
if (exportDialog.exec() != QDialog::Accepted)
break;
const QSize imageSize = exportDialog.exportSize();
QImage image(imageSize, QImage::Format_ARGB32);
image.fill(Qt::transparent);
QPainter painter;
painter.begin(&image);
m_view->renderer()->render(&painter, QRectF(QPointF(), QSizeF(imageSize)));
painter.end();
const QString fileName = exportDialog.exportFileName();
if (image.save(fileName)) {
const QString message = tr("Exported %1, %2x%3, %4 bytes")
.arg(QDir::toNativeSeparators(fileName)).arg(imageSize.width()).arg(imageSize.height())
.arg(QFileInfo(fileName).size());
statusBar()->showMessage(message);
break;
} else {
QMessageBox::critical(this, tr("Export Image"),
tr("Could not write file '%1'.").arg(QDir::toNativeSeparators(fileName)));
}
}
}
void MainWindow::updateZoomLabel()
{
const int percent = qRound(m_view->zoomFactor() * qreal(100));
m_zoomLabel->setText(QString::number(percent) + QLatin1Char('%'));
}
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