Added lancelot-based scenegraph rendering regression test

Change-Id: I6718d00ba96dc9c96dac82de4ded9228f6bfb990
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>

2 files changed, 211 insertions, 0 deletions

diff --git a/tests/manual/scenegraph_lancelot/scenegrabber/main.cpp b/tests/manual/scenegraph_lancelot/scenegrabber/main.cpp
new file mode 100644
index 0000000000..e112df1812
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/scenegrabber/main.cpp
@@ -0,0 +1,203 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 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"
diff --git a/tests/manual/scenegraph_lancelot/scenegrabber/scenegrabber.pro b/tests/manual/scenegraph_lancelot/scenegrabber/scenegrabber.pro
new file mode 100644
index 0000000000..24f0f8a315
--- /dev/null
+++ b/tests/manual/scenegraph_lancelot/scenegrabber/scenegrabber.pro
@@ -0,0 +1,8 @@
+TARGET = qmlscenegrabber
+DESTDIR=..
+macx:CONFIG -= app_bundle
+CONFIG += console
+
+QT += quick
+
+SOURCES += main.cpp