Mercurial > projects > qtd
diff examples/draganddrop/dropsite/droparea.d @ 19:d54443f1ce1e
add dropsite example
author | mandel |
---|---|
date | Thu, 14 May 2009 18:20:24 +0000 |
parents | |
children | e747af2e6b46 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/examples/draganddrop/dropsite/droparea.d Thu May 14 18:20:24 2009 +0000 @@ -0,0 +1,126 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** 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, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, 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. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +module droparea; + +import qt.gui.QLabel; + +import tango.io.Stdout; + + +class DropArea : public QLabel +{ +public: + this(QWidget parent = null) + { + super(parent); + + setMinimumSize(200, 200); + setFrameStyle(QFrame.Sunken | QFrame.StyledPanel); + setAlignment(Qt.AlignCenter); + setAcceptDrops(true); + setAutoFillBackground(true); + clearArea(); + } + + void clearArea() + { + setText(tr("<drop content>")); + setBackgroundRole(QPalette.Dark); + + changed.emit(null); + } + + mixin Signal!("changed", QMimeData); + +protected: + + void dragEnterEvent(QDragEnterEvent event) + { + setText(tr("<drop content>")); + setBackgroundRole(QPalette.Highlight); + + event.acceptProposedAction(); + changed.emit(event.mimeData); + } + + void dragMoveEvent(QDragMoveEvent event) + { + event.acceptProposedAction(); + } + + void dragLeaveEvent(QDragLeaveEvent event) + { + clearArea(); + event.accept(); + } + + void dropEvent(QDropEvent event) + { + QMimeData mimeData = event.mimeData(); + + if (mimeData.hasImage()) { + //TODO setPixmap(qvariant_cast<QPixmap>(mimeData.imageData()); + } else if (mimeData.hasHtml()) { + setText(mimeData.html()); + setTextFormat(Qt.RichText); + } else if (mimeData.hasText()) { + setText(mimeData.text()); + setTextFormat(Qt.PlainText); + } else if (mimeData.hasUrls()) { + QUrl[] urlList = mimeData.urls(); + char[] text; + for (int i = 0; i < urlList.length && i < 32; ++i) { + text ~= urlList[i].path() ~ "\n"; + } + setText(text); + } else { + setText(tr("Cannot display data")); + } + + setBackgroundRole(QPalette.Dark); + event.acceptProposedAction(); + } + +private: + QLabel label; +} +