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Thumbnail.cpp
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Thumbnail.cpp
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/***************************************************************************
* Copyright (c) 2008 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#include "PreCompiled.h"
#ifndef _PreComp_
# include <QApplication>
# include <QBuffer>
# include <QByteArray>
# include <QDateTime>
# include <QImage>
# include <QThread>
#endif
#include <App/Application.h>
#include <Base/Reader.h>
#include <Base/Writer.h>
#include "Thumbnail.h"
#include "BitmapFactory.h"
#include "View3DInventorViewer.h"
using namespace Gui;
Thumbnail::Thumbnail(int s) : viewer(nullptr), size(s)
{
}
Thumbnail::~Thumbnail()
{
}
void Thumbnail::setViewer(View3DInventorViewer* v)
{
this->viewer = v;
}
void Thumbnail::setSize(int s)
{
this->size = s;
}
void Thumbnail::setFileName(const char* fn)
{
this->uri = QUrl::fromLocalFile(QString::fromUtf8(fn));
}
unsigned int Thumbnail::getMemSize () const
{
return 0;
}
void Thumbnail::Save (Base::Writer &writer) const
{
// It's only possible to add extra information if force of XML is disabled
if (!writer.isForceXML())
writer.addFile("thumbnails/Thumbnail.png", this);
}
void Thumbnail::Restore(Base::XMLReader &reader)
{
Q_UNUSED(reader);
//reader.addFile("Thumbnail.png",this);
}
void Thumbnail::SaveDocFile (Base::Writer &writer) const
{
if (!this->viewer)
return;
QImage img;
if (this->viewer->isActiveWindow()) {
if (this->viewer->thread() != QThread::currentThread()) {
qWarning("Cannot create a thumbnail from non-GUI thread");
return;
}
QColor invalid;
this->viewer->imageFromFramebuffer(this->size, this->size, 4, invalid, img);
}
// Get app icon and resize to half size to insert in topbottom position over the current view snapshot
QPixmap appIcon = Gui::BitmapFactory().pixmap(App::Application::Config()["AppIcon"].c_str());
QPixmap px = appIcon;
if (!img.isNull()) {
// Create a small "Fc" Application icon in the bottom right of the thumbnail
if (App::GetApplication().GetParameterGroupByPath
("User parameter:BaseApp/Preferences/Document")->GetBool("AddThumbnailLogo",true)) {
// only scale app icon if an offscreen image could be created
appIcon = appIcon.scaled(this->size / 4, this->size /4, Qt::IgnoreAspectRatio, Qt::SmoothTransformation);
px = BitmapFactory().merge(QPixmap::fromImage(img), appIcon, BitmapFactoryInst::BottomRight);
}
else {
px = QPixmap::fromImage(img);
}
}
if (!px.isNull()) {
// according to specification add some meta-information to the image
qint64 mt = QDateTime::currentDateTimeUtc().toSecsSinceEpoch();
QString mtime = QString::fromLatin1("%1").arg(mt);
img.setText(QLatin1String("Software"), qApp->applicationName());
img.setText(QLatin1String("Thumb::Mimetype"), QLatin1String("application/x-extension-fcstd"));
img.setText(QLatin1String("Thumb::MTime"), mtime);
img.setText(QLatin1String("Thumb::URI"), this->uri.toString());
QByteArray ba;
QBuffer buffer(&ba);
buffer.open(QIODevice::WriteOnly);
px.save(&buffer, "PNG");
writer.Stream().write(ba.constData(), ba.length());
}
}
void Thumbnail::RestoreDocFile(Base::Reader &reader)
{
Q_UNUSED(reader);
}