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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
** of its contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "mainwindow.h"
#include <QtGui>
#include <unistd.h>
#include <QFileSystemWatcher>
#include "svgview.h"
MainWindow::MainWindow()
: QMainWindow()
, m_view(new SvgView)
, m_watcher(NULL)
, m_filehandle(NULL)
{
QMenu *fileMenu = new QMenu(tr("&File"), this);
QAction *openAction = fileMenu->addAction(tr("&Open..."));
openAction->setShortcut(QKeySequence(tr("Ctrl+O")));
QAction *quitAction = fileMenu->addAction(tr("E&xit"));
quitAction->setShortcuts(QKeySequence::Quit);
menuBar()->addMenu(fileMenu);
QMenu *viewMenu = new QMenu(tr("&View"), this);
m_interactiveAction = viewMenu->addAction(tr("&Interactive"));
m_interactiveAction->setEnabled(false);
m_interactiveAction->setCheckable(true);
m_interactiveAction->setChecked(false);
connect(m_interactiveAction, SIGNAL(toggled(bool)), m_view, SLOT(setViewInteractive(bool)));
m_backgroundAction = viewMenu->addAction(tr("&Background"));
m_backgroundAction->setEnabled(false);
m_backgroundAction->setCheckable(true);
m_backgroundAction->setChecked(false);
m_backgroundAction->setVisible(false);
connect(m_backgroundAction, SIGNAL(toggled(bool)), m_view, SLOT(setViewBackground(bool)));
m_outlineAction = viewMenu->addAction(tr("&Outline"));
m_outlineAction->setEnabled(false);
m_outlineAction->setCheckable(true);
m_outlineAction->setChecked(true);
connect(m_outlineAction, SIGNAL(toggled(bool)), m_view, SLOT(setViewOutline(bool)));
menuBar()->addMenu(viewMenu);
QMenu *rendererMenu = new QMenu(tr("&Renderer"), this);
m_nativeAction = rendererMenu->addAction(tr("&Native"));
m_nativeAction->setCheckable(true);
m_nativeAction->setChecked(true);
#ifndef QT_NO_OPENGL
m_glAction = rendererMenu->addAction(tr("&OpenGL"));
m_glAction->setCheckable(true);
#endif
m_imageAction = rendererMenu->addAction(tr("&Image"));
m_imageAction->setCheckable(true);
#ifndef QT_NO_OPENGL
rendererMenu->addSeparator();
m_highQualityAntialiasingAction = rendererMenu->addAction(tr("&High Quality Antialiasing"));
m_highQualityAntialiasingAction->setEnabled(false);
m_highQualityAntialiasingAction->setCheckable(true);
m_highQualityAntialiasingAction->setChecked(false);
connect(m_highQualityAntialiasingAction, SIGNAL(toggled(bool)), m_view, SLOT(setHighQualityAntialiasing(bool)));
#endif
QActionGroup *rendererGroup = new QActionGroup(this);
rendererGroup->addAction(m_nativeAction);
#ifndef QT_NO_OPENGL
rendererGroup->addAction(m_glAction);
#endif
rendererGroup->addAction(m_imageAction);
menuBar()->addMenu(rendererMenu);
connect(openAction, SIGNAL(triggered()), this, SLOT(openFile()));
connect(quitAction, SIGNAL(triggered()), qApp, SLOT(quit()));
connect(rendererGroup, SIGNAL(triggered(QAction*)),
this, SLOT(setRenderer(QAction*)));
setCentralWidget(m_view);
setWindowTitle(tr("Yosys SVG Viewer"));
}
void MainWindow::openFile(const QString &path, bool reload)
{
QString fileName;
if (path.isNull())
fileName = QFileDialog::getOpenFileName(this, tr("Open SVG File"),
m_currentPath, "SVG files (*.svg *.svgz *.svg.gz)");
else
fileName = path;
if (m_watcher) {
delete m_watcher;
m_watcher = NULL;
}
if (m_filehandle) {
fclose(m_filehandle);
m_filehandle = NULL;
}
if (!fileName.isEmpty()) {
QFile file(fileName);
if (!file.exists()) {
QMessageBox::critical(this, tr("Open SVG File"),
QString("Could not open file '%1'.").arg(fileName));
m_interactiveAction->setEnabled(false);
m_outlineAction->setEnabled(false);
m_backgroundAction->setEnabled(false);
return;
}
QTransform oldTransform = m_view->transform();
m_view->openFile(file);
if (!fileName.startsWith(":/"))
{
m_currentPath = fileName;
setWindowTitle(tr("%1 - Yosys SVG Viewer").arg(m_currentPath));
// just keep the file open so this process is found using 'fuser'
m_filehandle = fopen(fileName.toAscii(), "r");
m_watcher = new QFileSystemWatcher(this);
m_watcher->addPath(fileName);
connect(m_watcher, SIGNAL(fileChanged(const QString&)), this, SLOT(reloadFile()));
}
m_interactiveAction->setEnabled(true);
m_outlineAction->setEnabled(true);
m_backgroundAction->setEnabled(true);
if (reload)
m_view->setTransform(oldTransform);
else
resize(m_view->sizeHint() + QSize(80, 80 + menuBar()->height()));
}
}
void MainWindow::reloadFile()
{
// give the writer ~100 ms to finish writing
usleep(100000);
openFile(m_currentPath, true);
}
void MainWindow::setRenderer(QAction *action)
{
#ifndef QT_NO_OPENGL
m_highQualityAntialiasingAction->setEnabled(false);
#endif
if (action == m_nativeAction)
m_view->setRenderer(SvgView::Native);
#ifndef QT_NO_OPENGL
else if (action == m_glAction) {
m_highQualityAntialiasingAction->setEnabled(true);
m_view->setRenderer(SvgView::OpenGL);
}
#endif
else if (action == m_imageAction) {
m_view->setRenderer(SvgView::Image);
}
}
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