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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** 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://www.qt.io/licensing. For further information
** use the contact form at http://www.qt.io/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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
****************************************************************************/
#include "pythonsourcegenerator.h"
#include <QSet>
namespace PythonEditor {
namespace Internal {
static const char BASH_RUN_HEADER[] = "#!/usr/bin/env python\n";
static const char ENCODING_HEADER[] = "# -*- coding: utf-8 -*-\n";
SourceGenerator::SourceGenerator()
: m_pythonQtBinding(PySide)
, m_pythonQtVersion(Qt4)
{
}
SourceGenerator::~SourceGenerator()
{
}
void SourceGenerator::setPythonQtBinding(QtBinding binding)
{
m_pythonQtBinding = binding;
}
void SourceGenerator::setPythonQtVersion(SourceGenerator::QtVersion version)
{
m_pythonQtVersion = version;
}
QString SourceGenerator::generateClass(const QString &className,
const QString &baseClass,
Utils::NewClassWidget::ClassType classType) const
{
QSet<QString> modules;
bool hasUserBaseClass = !baseClass.isEmpty();
// heuristic
bool wasInheritedFromQt = hasUserBaseClass && (baseClass.at(0) == QLatin1Char('Q'));
QString actualBase = baseClass;
switch (classType) {
case Utils::NewClassWidget::NoClassType:
break;
case Utils::NewClassWidget::SharedDataClass:
case Utils::NewClassWidget::ClassInheritsQQuickItem:
break;
case Utils::NewClassWidget::ClassInheritsQObject:
wasInheritedFromQt = true;
modules.insert(QLatin1String("QtCore"));
if (!hasUserBaseClass)
actualBase = QLatin1String("QtCore.QObject");
break;
case Utils::NewClassWidget::ClassInheritsQWidget:
wasInheritedFromQt = true;
modules.insert(QLatin1String("QtCore"));
modules.insert(moduleForQWidget());
if (!hasUserBaseClass)
actualBase = moduleForQWidget() + QLatin1String(".QWidget");
break;
case Utils::NewClassWidget::ClassInheritsQDeclarativeItem:
wasInheritedFromQt = true;
modules.insert(QLatin1String("QtCore"));
modules.insert(QLatin1String("QtDeclarative"));
if (!hasUserBaseClass)
actualBase = QLatin1String("QtDeclarative.QDeclarativeItem");
break;
}
QString nonQtModule; // empty
if (hasUserBaseClass) {
int dotIndex = baseClass.lastIndexOf(QLatin1Char('.'));
if (dotIndex != -1) {
if (wasInheritedFromQt)
modules.insert(baseClass.left(dotIndex));
else
nonQtModule = baseClass.left(dotIndex);
}
}
QString ret;
ret.reserve(1024);
ret += QLatin1String(ENCODING_HEADER);
ret += QLatin1Char('\n');
if (!modules.isEmpty()) {
ret += qtModulesImport(modules);
ret += QLatin1Char('\n');
}
if (!nonQtModule.isEmpty())
ret += QString::fromLatin1("import %1\n\n").arg(nonQtModule);
if (actualBase.isEmpty())
ret += QString::fromLatin1("class %1:\n").arg(className);
else
ret += QString::fromLatin1("class %1(%2):\n").arg(className).arg(actualBase);
ret += QLatin1String(" def __init__(self):\n");
if (wasInheritedFromQt)
ret += QString::fromLatin1(" %1.__init__(self)\n").arg(actualBase);
ret += QLatin1String(" pass\n");
return ret;
}
/**
* @brief Generates main file of PyQt/PySide application
*
* Class MainWindow should be defined in 'mainwindow' module.
* @param windowTitle Title for created window instance
*/
QString SourceGenerator::generateQtMain(const QString &windowTitle) const
{
QSet<QString> qtModules;
qtModules.insert(QLatin1String("QtCore"));
qtModules.insert(moduleForQWidget());
QString ret;
ret.reserve(1024);
ret += QLatin1String(BASH_RUN_HEADER);
ret += QLatin1String(ENCODING_HEADER);
ret += QLatin1Char('\n');
ret += QLatin1String("import sys\n");
ret += qtModulesImport(qtModules);
ret += QLatin1String("from mainwindow import MainWindow\n");
ret += QLatin1Char('\n');
ret += QString::fromLatin1(
"if __name__ == \'__main__\':\n"
" app = %1.QApplication(sys.argv)\n"
" win = MainWindow()\n"
" win.setWindowTitle(u\'%2\')\n"
" win.show()\n"
" app.exec_()\n"
).arg(moduleForQWidget()).arg(windowTitle);
return ret;
}
QString SourceGenerator::qtModulesImport(const QSet<QString> &modules) const
{
QString slotsImport;
if (modules.contains(QLatin1String("QtCore")))
slotsImport = QLatin1String(" from PyQt4.QtCore import pyqtSlot as Slot\n");
QLatin1String defaultBinding("PySide");
QLatin1String fallbackBinding("PyQt4");
if (m_pythonQtBinding == PyQt)
qSwap(defaultBinding, fallbackBinding);
QString ret;
ret.reserve(256);
ret += QLatin1String("try:\n");
if (m_pythonQtBinding == PyQt)
ret += slotsImport;
foreach (const QString &name, modules)
ret += QString::fromLatin1(" from %1 import %2\n")
.arg(defaultBinding)
.arg(name);
ret += QLatin1String("except:\n");
if (m_pythonQtBinding != PyQt)
ret += slotsImport;
foreach (const QString &name, modules)
ret += QString::fromLatin1(" from %1 import %2\n")
.arg(fallbackBinding)
.arg(name);
return ret;
}
QString SourceGenerator::moduleForQWidget() const
{
if (m_pythonQtVersion == Qt4)
return QLatin1String("QtGui");
else
return QLatin1String("QtWidgets");
}
} // namespace Internal
} // namespace PythonEditor
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