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Diffstat (limited to 'libs/svgviewer/mainwindow.cpp')
| -rw-r--r-- | libs/svgviewer/mainwindow.cpp | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/libs/svgviewer/mainwindow.cpp b/libs/svgviewer/mainwindow.cpp new file mode 100644 index 000000000..b352ff9f7 --- /dev/null +++ b/libs/svgviewer/mainwindow.cpp @@ -0,0 +1,192 @@ +/**************************************************************************** +** +** 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 <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_backgroundAction = viewMenu->addAction(tr("&Background")); + m_backgroundAction->setEnabled(false); + m_backgroundAction->setCheckable(true); + m_backgroundAction->setChecked(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("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_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 - SVGViewer").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_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() +{ + 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); + } +} |