Doc: Compile droparea snippet

droparea.h has been removed. Remove all code that depends on that header
except the one snippet that is still used. Add minimal code to allow
the snippet to be compiled.

Done-with: Nico Vertriest <nico.vertriest@qt.io>
Task-number: QTBUG-81486
Change-Id: I58c80d3527c82389ccff97567f4c75c33aec0f5e
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

1 files changed, 0 insertions, 150 deletions

diff --git a/src/gui/doc/snippets/droparea.cpp b/src/gui/doc/snippets/droparea.cpp
deleted file mode 100644
index c0fdbf9617..0000000000
--- a/src/gui/doc/snippets/droparea.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2016 The Qt Company Ltd.
-** Contact: https://www.qt.io/licensing/
-**
-** This file is part of the documentation of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:BSD$
-** Commercial License Usage
-** Licensees holding valid commercial Qt licenses may use this file in
-** accordance with the commercial license agreement provided with the
-** Software or, alternatively, in accordance with the terms contained in
-** a written agreement between you and The Qt Company. For licensing terms
-** and conditions see https://www.qt.io/terms-conditions. For further
-** information use the contact form at https://www.qt.io/contact-us.
-**
-** BSD License Usage
-** Alternatively, 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 The Qt Company Ltd 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 "droparea.h"
-
-DropArea::DropArea(QWidget *parent)
-    : QLabel(parent)
-{
-    setMinimumSize(200, 200);
-    setFrameStyle(QFrame::Sunken | QFrame::StyledPanel);
-    setAlignment(Qt::AlignCenter);
-    setAcceptDrops(true);
-    setAutoFillBackground(true);
-    clear();
-}
-
-void DropArea::dragEnterEvent(QDragEnterEvent *event)
-{
-    setText(tr("<drop content>"));
-    setBackgroundRole(QPalette::Highlight);
-
-    event->acceptProposedAction();
-    emit changed(event->mimeData());
-}
-
-void DropArea::dragMoveEvent(QDragMoveEvent *event)
-{
-    event->acceptProposedAction();
-}
-
-void DropArea::dropEvent(QDropEvent *event)
-{
-    const QMimeData *mimeData = event->mimeData();
-
-    if (mimeData->hasImage()) {
-        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 {
-        setText(tr("Cannot display data"));
-    }
-
-    setBackgroundRole(QPalette::Dark);
-    event->acceptProposedAction();
-}
-
-//![0]
-void DropArea::paste()
-{
-    const QClipboard *clipboard = QApplication::clipboard();
-    const QMimeData *mimeData = clipboard->mimeData();
-
-    if (mimeData->hasImage()) {
-        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 {
-        setText(tr("Cannot display data"));
-    }
-//![0]
-
-    emit changed(mimeData);
-    setBackgroundRole(QPalette::Dark);
-    //event->acceptProposedAction();
-}
-
-void DropArea::dragLeaveEvent(QDragLeaveEvent *event)
-{
-    clear();
-    event->accept();
-}
-
-void DropArea::clear()
-{
-    setText(tr("<drop content>"));
-    setBackgroundRole(QPalette::Dark);
-
-    emit changed();
-}
-
-QPixmap DropArea::extractPixmap(const QByteArray &data, const QString &format)
-{
-    const QList<QByteArray> imageFormats = QImageReader::supportedImageFormats();
-    QPixmap pixmap;
-
-    for (const QByteArray &imageFormat : imageFormats) {
-        if (format.mid(6) == QString(imageFormat)) {
-            pixmap.loadFromData(data, imageFormat);
-            break;
-        }
-    }
-    return pixmap;
-}