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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 test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/QTimer>
#include <QtCore/QDebug>
#include <QtCore/QFileInfo>
#include <QtGui/QGuiApplication>
#include <QtGui/QImage>
#include <QtQuick/QQuickView>
#include <QtQuick/QQuickItem>
// Timeout values:
// A valid screen grab requires the scene to not change
// for SCENE_STABLE_TIME ms (default 500)
#define SCENE_STABLE_TIME 500
// Give up after SCENE_TIMEOUT ms
#define SCENE_TIMEOUT 16000
//#define GRABBERDEBUG
class GrabbingView : public QQuickView
{
Q_OBJECT
public:
GrabbingView(const QString &outputFile)
: ofile(outputFile), frames(0), isGrabbing(false)
{
connect(this, SIGNAL(afterRendering()), SLOT(renderingDone()));
QTimer::singleShot(SCENE_TIMEOUT, this, SLOT(timedOut()));
stableSceneTimer.setSingleShot(true);
connect(&stableSceneTimer, SIGNAL(timeout()), SLOT(sceneStabilized()));
}
private slots:
void renderingDone()
{
if (isGrabbing)
return;
isGrabbing = true;
frames++;
#ifdef GRABBERDEBUG
printf("...frame %i\n", frames);
#endif
QImage img = grabWindow();
//qDebug() << "Rendering done, grab is" << !img.isNull() << "timer valid:" << stableSceneTimer.isActive() << "same as last:" << (img == lastGrab);
if (!img.isNull() && img != lastGrab) {
lastGrab = img;
stableSceneTimer.start(SCENE_STABLE_TIME);
}
isGrabbing = false;
}
void sceneStabilized()
{
#ifdef GRABBERDEBUG
printf("...sceneStabilized IN\n");
#endif
if (ofile == "-") { // Write to stdout
QFile of;
if (!of.open(1, QIODevice::WriteOnly) || !lastGrab.save(&of, "ppm")) {
qWarning() << "Error: failed to write grabbed image to stdout.";
QGuiApplication::exit(2);
return;
}
} else {
if (!lastGrab.save(ofile)) {
qWarning() << "Error: failed to store grabbed image to" << ofile;
QGuiApplication::exit(2);
return;
}
}
QGuiApplication::exit(0);
#ifdef GRABBERDEBUG
printf("...sceneStabilized OUT\n");
#endif
}
void timedOut()
{
qWarning() << "Error: timed out waiting for scene to stabilize." << frames << "frame(s) received. Last grab was" << (lastGrab.isNull() ? "invalid." : "valid.");
QGuiApplication::exit(3);
}
private:
QImage lastGrab;
QTimer stableSceneTimer;
QString ofile;
int frames;
bool isGrabbing;
};
extern uint qt_qhash_seed;
int main(int argc, char *argv[])
{
qt_qhash_seed = 0;
QGuiApplication a(argc, argv);
// Parse command line
QString ifile, ofile;
bool noText = false;
QStringList args = a.arguments();
int i = 0;
bool argError = false;
while (++i < args.size()) {
QString arg = args.at(i);
if ((arg == "-o") && (i < args.size()-1)) {
ofile = args.at(++i);
}
else if (arg == "-notext") {
noText = true;
}
else if (arg == "--cache-distance-fields") {
;
}
else if (ifile.isEmpty()) {
ifile = arg;
}
else {
argError = true;
break;
}
}
if (argError || ifile.isEmpty() || ofile.isEmpty()) {
qWarning() << "Usage:" << args.at(0).toLatin1().constData() << "[-notext] <qml-infile> -o <outfile or - for ppm on stdout>";
return 1;
}
QFileInfo ifi(ifile);
if (!ifi.exists() || !ifi.isReadable() || !ifi.isFile()) {
qWarning() << args.at(0).toLatin1().constData() << " error: unreadable input file" << ifile;
return 1;
}
// End parsing
GrabbingView v(ofile);
v.setSource(QUrl::fromLocalFile(ifile));
if (noText) {
QList<QQuickItem*> items = v.rootObject()->findChildren<QQuickItem*>();
foreach (QQuickItem *item, items) {
if (QByteArray(item->metaObject()->className()).contains("Text"))
item->setVisible(false);
}
}
v.show();
int retVal = a.exec();
#ifdef GRABBERDEBUG
printf("...retVal=%i\n", retVal);
#endif
return retVal;
}
#include "main.moc"
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