Modularize drag and drop documentation

- Move dnd docs and examples out of QtDoc module to gui library in QtBase
- Remove info related to Motif dnd since Qt5 doesn't implement it

Change-Id: Id7eb4eb422f4294a36dd92709ce3007903371f03
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>

1 files changed, 96 insertions, 0 deletions

diff --git a/src/gui/doc/snippets/droprectangle/window.cpp b/src/gui/doc/snippets/droprectangle/window.cpp
new file mode 100644
index 0000000000..d488a8742b
--- /dev/null
+++ b/src/gui/doc/snippets/droprectangle/window.cpp
@@ -0,0 +1,96 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation 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 Digia Plc 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 <QtGui>
+
+#include "window.h"
+
+Window::Window(QWidget *parent)
+    : QWidget(parent)
+{
+    QLabel *textLabel = new QLabel(tr("Data:"), this);
+    textBrowser = new QTextBrowser(this);
+
+    QLabel *mimeTypeLabel = new QLabel(tr("MIME types:"), this);
+    mimeTypeCombo = new QComboBox(this);
+
+    dropFrame = new QFrame(this);
+    dropFrame->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
+    QLabel *dropLabel = new QLabel(tr("Drop items here"), dropFrame);
+    dropLabel->setAlignment(Qt::AlignHCenter);
+
+    QVBoxLayout *dropFrameLayout = new QVBoxLayout(dropFrame);
+    dropFrameLayout->addWidget(dropLabel);
+
+    QHBoxLayout *dropLayout = new QHBoxLayout;
+    dropLayout->addStretch(0);
+    dropLayout->addWidget(dropFrame);
+    dropLayout->addStretch(0);
+
+    QVBoxLayout *mainLayout = new QVBoxLayout(this);
+    mainLayout->addWidget(textLabel);
+    mainLayout->addWidget(textBrowser);
+    mainLayout->addWidget(mimeTypeLabel);
+    mainLayout->addWidget(mimeTypeCombo);
+    mainLayout->addSpacing(32);
+    mainLayout->addLayout(dropLayout);
+
+    setAcceptDrops(true);
+    setWindowTitle(tr("Drop Rectangle"));
+}
+
+//! [0]
+void Window::dragMoveEvent(QDragMoveEvent *event)
+{
+    if (event->mimeData()->hasFormat("text/plain")
+        && event->answerRect().intersects(dropFrame->geometry()))
+
+        event->acceptProposedAction();
+}
+//! [0]
+
+void Window::dropEvent(QDropEvent *event)
+{
+    textBrowser->setPlainText(event->mimeData()->text());
+    mimeTypeCombo->clear();
+    mimeTypeCombo->addItems(event->mimeData()->formats());
+
+    event->acceptProposedAction();
+}