Qt 4.3: window.cpp Example File (script/context2d/window.cpp)

|  | Home · All Classes · Main Classes · Grouped Classes · Modules · Functions |

# window.cpp Example File
script/context2d/window.cpp

     /****************************************************************************
     **
     ** Copyright (C) 1992-2008 Trolltech ASA. All rights reserved.
     **
     ** This file is part of the documentation of the Qt Toolkit.
     **
     ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
    ** included in the packaging of this file.  Alternatively you may (at
    ** your option) use any later version of the GNU General Public
    ** License if such license has been publicly approved by Trolltech ASA
    ** (or its successors, if any) and the KDE Free Qt Foundation. In
    ** addition, as a special exception, Trolltech gives you certain
    ** additional rights. These rights are described in the Trolltech GPL
    ** Exception version 1.2, which can be found at
    ** http://www.trolltech.com/products/qt/gplexception/ and in the file
    ** GPL_EXCEPTION.txt in this package.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
    ** you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** In addition, as a special exception, Trolltech, as the sole
    ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
    ** Integration plug-in the right for the Qt/Eclipse Integration to
    ** link to functionality provided by Qt Designer and its related
    ** libraries.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
    ** granted herein.
     **
     ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
     ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
     **
     ****************************************************************************/

     #include "window.h"
     #include "qcontext2dcanvas.h"
     #include <QHBoxLayout>
     #include <QListWidget>
     #include <QDir>

     static QString scriptsDir()
     {
         if (QFile::exists("./scripts"))
             return "./scripts";
         return ":/scripts";
     }

     Window::Window(QWidget *parent)
         : QWidget(parent)
     {
         QHBoxLayout *hbox = new QHBoxLayout(this);
         QListWidget *view = new QListWidget(this);
         view->setEditTriggers(QAbstractItemView::NoEditTriggers);
         canvas = new QContext2DCanvas(this);
         canvas->setFixedSize(150, 150);
         hbox->addWidget(view);
         hbox->addWidget(canvas);

         QDir dir(scriptsDir());
         QFileInfoList entries = dir.entryInfoList(QStringList() << "*.js");
         for (int i = 0; i < entries.size(); ++i)
             view->addItem(entries.at(i).fileName());
         connect(view, SIGNAL(currentItemChanged(QListWidgetItem*, QListWidgetItem*)),
                 this, SLOT(selectScript(QListWidgetItem*)));

         setWindowTitle(tr("Context 2D"));
     }

     void Window::selectScript(QListWidgetItem *item)
     {
         QFile file(scriptsDir() + "/" + item->text());
         file.open(QIODevice::ReadOnly);
         QString contents = file.readAll();
         file.close();
         canvas->setScriptContents(contents);
     }