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;
+}
+