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Diffstat (limited to 'examples/script/context2d/window.cpp')
| -rw-r--r-- | examples/script/context2d/window.cpp | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/examples/script/context2d/window.cpp b/examples/script/context2d/window.cpp new file mode 100644 index 0000000..c579629 --- /dev/null +++ b/examples/script/context2d/window.cpp @@ -0,0 +1,180 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor +** the names of its contributors may be used to endorse or promote +** products derived from this software without specific prior written +** permission. +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "window.h" +#include "environment.h" +#include "context2d.h" +#include "qcontext2dcanvas.h" +#include <QHBoxLayout> +#include <QListWidget> +#include <QDir> +#include <QMessageBox> + +#ifndef QT_NO_SCRIPTTOOLS +#include <QAction> +#include <QApplication> +#include <QMainWindow> +#include <QPushButton> +#include <QVBoxLayout> +#include <QScriptEngineDebugger> +#endif + +static QString scriptsDir() +{ + if (QFile::exists("./scripts")) + return "./scripts"; + return ":/scripts"; +} + +//! [0] +Window::Window(QWidget *parent) + : QWidget(parent) +#ifndef QT_NO_SCRIPTTOOLS + , m_debugger(0), m_debugWindow(0) +#endif +{ + m_env = new Environment(this); + QObject::connect(m_env, SIGNAL(scriptError(QScriptValue)), + this, SLOT(reportScriptError(QScriptValue))); + + Context2D *context = new Context2D(this); + context->setSize(150, 150); + m_canvas = new QContext2DCanvas(context, m_env, this); + m_canvas->setFixedSize(context->size()); + m_canvas->setObjectName("tutorial"); + m_env->addCanvas(m_canvas); +//! [0] + +#ifndef QT_NO_SCRIPTTOOLS + QVBoxLayout *vbox = new QVBoxLayout(); + vbox->addWidget(m_canvas); + m_debugButton = new QPushButton(tr("Run in Debugger")); + connect(m_debugButton, SIGNAL(clicked()), this, SLOT(runInDebugger())); + vbox->addWidget(m_debugButton); +#endif + + QHBoxLayout *hbox = new QHBoxLayout(this); + m_view = new QListWidget(this); + m_view->setEditTriggers(QAbstractItemView::NoEditTriggers); + hbox->addWidget(m_view); +#ifndef QT_NO_SCRIPTTOOLS + hbox->addLayout(vbox); +#else + hbox->addWidget(m_canvas); +#endif + +//! [1] + QDir dir(scriptsDir()); + QFileInfoList entries = dir.entryInfoList(QStringList() << "*.js"); + for (int i = 0; i < entries.size(); ++i) + m_view->addItem(entries.at(i).fileName()); + connect(m_view, SIGNAL(currentItemChanged(QListWidgetItem*,QListWidgetItem*)), + this, SLOT(selectScript(QListWidgetItem*))); +//! [1] + + setWindowTitle(tr("Context 2D")); +} + +//! [2] +void Window::selectScript(QListWidgetItem *item) +{ + QString fileName = item->text(); + runScript(fileName, /*debug=*/false); +} +//! [2] + +void Window::reportScriptError(const QScriptValue &error) +{ + QMessageBox::warning(this, tr("Context 2D"), tr("Line %0: %1") + .arg(error.property("lineNumber").toInt32()) + .arg(error.toString())); +} + +#ifndef QT_NO_SCRIPTTOOLS +//! [3] +void Window::runInDebugger() +{ + QListWidgetItem *item = m_view->currentItem(); + if (item) { + QString fileName = item->text(); + runScript(fileName, /*debug=*/true); + } +} +//! [3] +#endif + +//! [4] +void Window::runScript(const QString &fileName, bool debug) +{ + QFile file(scriptsDir() + "/" + fileName); + file.open(QIODevice::ReadOnly); + QString contents = file.readAll(); + file.close(); + m_env->reset(); + +#ifndef QT_NO_SCRIPTTOOLS + if (debug) { + if (!m_debugger) { + m_debugger = new QScriptEngineDebugger(this); + m_debugWindow = m_debugger->standardWindow(); + m_debugWindow->setWindowModality(Qt::ApplicationModal); + m_debugWindow->resize(1280, 704); + } + m_debugger->attachTo(m_env->engine()); + m_debugger->action(QScriptEngineDebugger::InterruptAction)->trigger(); + } else { + if (m_debugger) + m_debugger->detach(); + } +#else + Q_UNUSED(debug); +#endif + + QScriptValue ret = m_env->evaluate(contents, fileName); + +#ifndef QT_NO_SCRIPTTOOLS + if (m_debugWindow) + m_debugWindow->hide(); +#endif + + if (ret.isError()) + reportScriptError(ret); +} +//! [4] |