window.cpp 范例文件

script/context2d/window.cpp
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#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"; } 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); #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 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*))); setWindowTitle(tr("Context 2D")); } void Window::selectScript(QListWidgetItem *item) { QString fileName = item->text(); runScript(fileName, /*debug=*/false); } 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 void Window::runInDebugger() { QListWidgetItem *item = m_view->currentItem(); if (item) { QString fileName = item->text(); runScript(fileName, /*debug=*/true); } } #endif 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); }