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qtdeclarative/tools/qml/main.cpp

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/****************************************************************************
**
** Copyright (C) 2013 Research In Motion.
** Contact: http://www.qt-project.org/legal
**
** This file is part of the tools applications 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 "conf.h"
#include <QCoreApplication>
#ifdef QT_GUI_LIB
#include <QGuiApplication>
#include <QWindow>
#include <QFileOpenEvent>
#ifdef QT_WIDGETS_LIB
#include <QApplication>
#endif // QT_WIDGETS_LIB
#endif // QT_GUI_LIB
#include <QQmlApplicationEngine>
#include <QFile>
#include <QFileInfo>
#include <QRegularExpression>
#include <QStringList>
#include <QDebug>
#include <QStandardPaths>
#include <QtGlobal>
#include <qqml.h>
#include <qqmldebug.h>
#include <private/qabstractanimation_p.h>
#include <cstdio>
#include <cstring>
#include <cstdlib>
#define VERSION_MAJ 1
#define VERSION_MIN 0
#define VERSION_STR "1.0"
static Config *conf = 0;
static QQmlApplicationEngine *qae = 0;
static void loadConf(const QString &override, bool quiet) // Terminates app on failure
{
const QString defaultFileName = QLatin1String("configuration.qml");
QUrl settingsUrl;
bool builtIn = false; //just for keeping track of the warning
if (override.isEmpty()) {
QFileInfo fi;
fi.setFile(QStandardPaths::locate(QStandardPaths::DataLocation, defaultFileName));
if (fi.exists()) {
settingsUrl = QUrl::fromLocalFile(fi.absoluteFilePath());
} else {
// ### If different built-in configs are needed per-platform, just apply QFileSelector to the qrc conf.qml path
settingsUrl = QUrl(QLatin1String("qrc:///qt-project.org/QmlRuntime/conf/") + defaultFileName);
builtIn = true;
}
} else {
QFileInfo fi;
fi.setFile(override);
if (!fi.exists()) {
printf("qml: Couldn't find required configuration file: %s\n",
qPrintable(QDir::toNativeSeparators(fi.absoluteFilePath())));
exit(1);
}
settingsUrl = QUrl::fromLocalFile(fi.absoluteFilePath());
}
if (!quiet) {
if (builtIn)
printf("qml: Using built-in configuration.\n");
else
printf("qml: Using configuration file: %s\n",
qPrintable(settingsUrl.isLocalFile()
? QDir::toNativeSeparators(settingsUrl.toLocalFile())
: settingsUrl.toString()));
}
// TODO: When we have better engine control, ban QtQuick* imports on this engine
QQmlEngine e2;
QQmlComponent c2(&e2, settingsUrl);
conf = qobject_cast<Config*>(c2.create());
if (!conf){
printf("qml: Error loading configuration file: %s\n", qPrintable(c2.errorString()));
exit(1);
}
}
void contain(QObject *o, const QUrl &containPath)
{
QQmlComponent c(qae, containPath);
QObject *o2 = c.create();
if (!o2)
return;
bool success = false;
int idx;
if ((idx = o2->metaObject()->indexOfProperty("containedObject")) != -1)
success = o2->metaObject()->property(idx).write(o2, QVariant::fromValue<QObject*>(o));
if (!success)
o->setParent(o2); //Set QObject parent, and assume container will react as needed
}
#ifdef QT_GUI_LIB
// Loads qml after receiving a QFileOpenEvent
class LoaderApplication : public QGuiApplication
{
public:
LoaderApplication(int& argc, char **argv) : QGuiApplication(argc, argv) {}
bool event(QEvent *ev)
{
if (ev->type() == QEvent::FileOpen)
qae->load(static_cast<QFileOpenEvent *>(ev)->url());
else
return QGuiApplication::event(ev);
return true;
}
};
#endif // QT_GUI_LIB
// Listens to the appEngine signals to determine if all files failed to load
class LoadWatcher : public QObject
{
Q_OBJECT
public:
LoadWatcher(QQmlApplicationEngine *e, int expected)
: QObject(e)
, expect(expected)
, haveOne(false)
{
connect(e, SIGNAL(objectCreated(QObject*,QUrl)),
this, SLOT(checkFinished(QObject*)));
}
private:
int expect;
bool haveOne;
public Q_SLOTS:
void checkFinished(QObject *o)
{
if (o) {
haveOne = true;
if (conf && qae)
foreach (PartialScene *ps, conf->completers)
if (o->inherits(ps->itemType().toUtf8().constData()))
contain(o, ps->container());
}
if (haveOne)
return;
if (! --expect) {
printf("qml: Did not load any objects, exiting.\n");
exit(2);//Different return code from qFatal
}
}
};
void quietMessageHandler(QtMsgType type, const QMessageLogContext &ctxt, const QString &msg)
{
Q_UNUSED(ctxt);
Q_UNUSED(msg);
//Doesn't print anything
switch (type) {
case QtFatalMsg:
exit(-1);
case QtCriticalMsg:
case QtDebugMsg:
case QtWarningMsg:
default:
;
}
}
// ### Should command line arguments have translations? Qt creator doesn't, so maybe it's not worth it.
enum QmlApplicationType {
QmlApplicationTypeUnknown
, QmlApplicationTypeCore
#ifdef QT_GUI_LIB
, QmlApplicationTypeGui
#ifdef QT_WIDGETS_LIB
, QmlApplicationTypeWidget
#endif // QT_WIDGETS_LIB
#endif // QT_GUI_LIB
};
#ifndef QT_GUI_LIB
QmlApplicationType applicationType = QmlApplicationTypeCore;
#else
QmlApplicationType applicationType = QmlApplicationTypeGui;
#endif // QT_GUI_LIB
bool quietMode = false;
bool verboseMode = false;
void printVersion()
{
printf("qml binary version ");
printf(VERSION_STR);
printf("\nbuilt with Qt version ");
printf(QT_VERSION_STR);
printf("\n");
exit(0);
}
void printUsage()
{
printf("Usage: qml [options] [files]\n");
printf("\n");
printf("Any argument ending in .qml will be treated as a QML file to be loaded.\n");
printf("Any number of QML files can be loaded. They will share the same engine.\n");
printf("Any argument which is not a recognized option and which does not end in .qml will be ignored.\n");
printf("'gui' application type is only available if the QtGui module is avaialble.\n");
printf("'widget' application type is only available if the QtWidgets module is avaialble.\n");
printf("\n");
printf("General Options:\n");
printf("\t-h, -help..................... Print this usage information and exit.\n");
printf("\t-v, -version.................. Print the version information and exit.\n");
#ifdef QT_GUI_LIB
#ifndef QT_WIDGETS_LIB
printf("\t-apptype [core|gui] .......... Select which application class to use. Default is gui.\n");
#else
printf("\t-apptype [core|gui|widget] ... Select which application class to use. Default is gui.\n");
#endif // QT_WIDGETS_LIB
#endif // QT_GUI_LIB
printf("\t-quiet ....................... Suppress all output.\n");
printf("\t-I [path] .................... Prepend the given path to the import paths.\n");
printf("\t-f [file] .................... Load the given file as a QML file.\n");
printf("\t-config [file] ............... Load the given file as the configuration file.\n");
printf("\t-- ........................... Arguments after this one are ignored by the launcher, but may be used within the QML application.\n");
printf("\tDebugging options:\n");
printf("\t-verbose ..................... Print information about what qml is doing, like specific file urls being loaded.\n");
printf("\t-translation [file] .......... Load the given file as the translations file.\n");
printf("\t-dummy-data [directory] ...... Load QML files from the given directory as context properties.\n");
printf("\t-slow-animations ............. Run all animations in slow motion.\n");
printf("\t-fixed-animations ............ Run animations off animation tick rather than wall time.\n");
exit(0);
}
//Called before application initialization, removes arguments it uses
void getAppFlags(int &argc, char **argv)
{
#ifdef QT_GUI_LIB
for (int i=0; i<argc; i++) {
if (!strcmp(argv[i], "-apptype")) { // Must be done before application, as it selects application
applicationType = QmlApplicationTypeUnknown;
if (i+1 < argc) {
if (!strcmp(argv[i+1], "core"))
applicationType = QmlApplicationTypeCore;
else if (!strcmp(argv[i+1], "gui"))
applicationType = QmlApplicationTypeGui;
#ifdef QT_WIDGETS_LIB
else if (!strcmp(argv[i+1], "widget"))
applicationType = QmlApplicationTypeWidget;
#endif // QT_WIDGETS_LIB
}
if (applicationType == QmlApplicationTypeUnknown) {
#ifndef QT_WIDGETS_LIB
printf("-apptype must be followed by one of the following: core gui\n");
#else
printf("-apptype must be followed by one of the following: core gui widget\n");
#endif // QT_WIDGETS_LIB
printUsage();
}
for (int j=i; j<argc-2; j++)
argv[j] = argv[j+2];
argc -= 2;
}
}
#endif // QT_GUI_LIB
}
bool getFileSansBangLine(const QString &path, QByteArray &output)
{
QFile f(path);
if (!f.open(QFile::ReadOnly | QFile::Text))
return false;
output = f.readAll();
if (output.startsWith("#!")) {//Remove first line in this case (except \n, to avoid disturbing line count)
output.remove(0, output.indexOf('\n'));
return true;
}
return false;
}
static void loadDummyDataFiles(QQmlEngine &engine, const QString& directory)
{
QDir dir(directory+"/dummydata", "*.qml");
QStringList list = dir.entryList();
for (int i = 0; i < list.size(); ++i) {
QString qml = list.at(i);
QFile f(dir.filePath(qml));
f.open(QIODevice::ReadOnly);
QByteArray data = f.readAll();
QQmlComponent comp(&engine);
comp.setData(data, QUrl());
QObject *dummyData = comp.create();
if (comp.isError()) {
QList<QQmlError> errors = comp.errors();
foreach (const QQmlError &error, errors)
qWarning() << error;
}
if (dummyData && !quietMode) {
printf("qml: Loaded dummy data: %s\n", qPrintable(dir.filePath(qml)));
qml.truncate(qml.length()-4);
engine.rootContext()->setContextProperty(qml, dummyData);
dummyData->setParent(&engine);
}
}
}
int main(int argc, char *argv[])
{
getAppFlags(argc, argv);
QCoreApplication *app = 0;
switch (applicationType) {
case QmlApplicationTypeCore:
app = new QCoreApplication(argc, argv);
break;
#ifdef QT_GUI_LIB
case QmlApplicationTypeGui:
app = new LoaderApplication(argc, argv);
break;
#ifdef QT_WIDGETS_LIB
case QmlApplicationTypeWidget:
app = new QApplication(argc, argv);
break;
#endif // QT_WIDGETS_LIB
#endif // QT_GUI_LIB
default:
Q_ASSERT_X(false, Q_FUNC_INFO, "impossible case");
break;
}
app->setApplicationName("Qml Runtime");
app->setOrganizationName("Qt Project");
app->setOrganizationDomain("qt-project.org");
qmlRegisterType<Config>("QmlRuntime.Config", VERSION_MAJ, VERSION_MIN, "Configuration");
qmlRegisterType<PartialScene>("QmlRuntime.Config", VERSION_MAJ, VERSION_MIN, "PartialScene");
QQmlApplicationEngine e;
QStringList files;
QString confFile;
QString translationFile;
QString dummyDir;
//Handle main arguments
QStringList argList = app->arguments();
for (int i = 0; i < argList.count(); i++) {
const QString &arg = argList[i];
if (arg == QLatin1String("-quiet"))
quietMode = true;
else if (arg == QLatin1String("-v") || arg == QLatin1String("-version"))
printVersion();
else if (arg == QLatin1String("-h") || arg == QLatin1String("-help"))
printUsage();
else if (arg == QLatin1String("--"))
break;
else if (arg == QLatin1String("-verbose"))
verboseMode = true;
else if (arg == QLatin1String("-slow-animations"))
QUnifiedTimer::instance()->setSlowModeEnabled(true);
else if (arg == QLatin1String("-fixed-animations"))
QUnifiedTimer::instance()->setConsistentTiming(true);
else if (arg == QLatin1String("-I")) {
if (i+1 == argList.count())
continue;//Invalid usage, but just ignore it
e.addImportPath(argList[i+1]);
i++;
} else if (arg == QLatin1String("-f")) {
if (i+1 == argList.count())
continue;//Invalid usage, but just ignore it
files << argList[i+1];
i++;
} else if (arg == QLatin1String("-config")){
if (i+1 == argList.count())
continue;//Invalid usage, but just ignore it
confFile = argList[i+1];
i++;
} else if (arg == QLatin1String("-translation")){
if (i+1 == argList.count())
continue;//Invalid usage, but just ignore it
translationFile = argList[i+1];
i++;
} else if (arg == QLatin1String("-dummy-data")){
if (i+1 == argList.count())
continue;//Invalid usage, but just ignore it
dummyDir = argList[i+1];
i++;
} else {
//If it ends in .qml, treat it as a file. Else ignore it
if (arg.endsWith(".qml"))
files << arg;
}
}
if (quietMode && verboseMode)
verboseMode = false;
#ifndef QT_NO_TRANSLATION
//qt_ translations loaded by QQmlApplicationEngine
QString sysLocale = QLocale::system().name();
if (!translationFile.isEmpty()) { //Note: installed before QQmlApplicationEngine's automatic translation loading
QTranslator translator;
if (translator.load(translationFile)) {
app->installTranslator(&translator);
if (verboseMode)
printf("qml: Loaded translation file %s\n", qPrintable(QDir::toNativeSeparators(translationFile)));
} else {
if (!quietMode)
printf("qml: Could not load the translation file %s\n", qPrintable(QDir::toNativeSeparators(translationFile)));
}
}
#else
if (!translationFile.isEmpty() && !quietMode)
printf("qml: Translation file specified, but Qt built without translation support.\n");
#endif
if (quietMode)
qInstallMessageHandler(quietMessageHandler);
if (files.count() <= 0) {
if (!quietMode)
printf("qml: No files specified. Terminating.\n");
exit(1);
}
qae = &e;
loadConf(confFile, !verboseMode);
//Load files
LoadWatcher lw(&e, files.count());
foreach (const QString &path, files) {
//QUrl::fromUserInput doesn't treat no scheme as relative file paths
QRegularExpression urlRe("[[:word:]]+://.*");
if (urlRe.match(path).hasMatch()) { //Treat as a URL
QUrl url = QUrl::fromUserInput(path);
if (verboseMode)
printf("qml: loading %s\n",
qPrintable(url.isLocalFile()
? QDir::toNativeSeparators(url.toLocalFile())
: url.toString()));
e.load(url);
} else { //Local file path
if (verboseMode)
printf("qml: loading %s\n", qPrintable(QDir::toNativeSeparators(path)));
QByteArray strippedFile;
if (getFileSansBangLine(path, strippedFile))
e.loadData(strippedFile, e.baseUrl().resolved(QUrl::fromLocalFile(path))); //QQmlComponent won't resolve it for us, it doesn't know it's a valid file if we loadData
else //Errors or no bang line
e.load(path);
}
}
if (!dummyDir.isEmpty() && QFileInfo (dummyDir).isDir())
loadDummyDataFiles(e, dummyDir);
return app->exec();
}
#include "main.moc"
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