Drag & drop fixes for all views: assure that a consistent pixmap for the drag object is used throughout all views (still open yet: KCategorizedView uses its custom code yet)

svn path=/trunk/KDE/kdebase/apps/; revision=739322

1 files changed, 85 insertions, 0 deletions

diff --git a/src/draganddrophelper.cpp b/src/draganddrophelper.cpp
new file mode 100644
index 000000000..d9188675a
--- /dev/null
+++ b/src/draganddrophelper.cpp
@@ -0,0 +1,85 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Peter Penz <[email protected]>                  *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program is distributed in the hope that it will be useful,       *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#include "draganddrophelper.h"
+
+#include <kdirmodel.h>
+#include <kicon.h>
+
+#include <QAbstractItemView>
+#include <QAbstractProxyModel>
+#include <QBrush>
+#include <QDrag>
+#include <QPainter>
+#include <QRect>
+#include <QWidget>
+
+void DragAndDropHelper::startDrag(QAbstractItemView* itemView, Qt::DropActions supportedActions)
+{
+    QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
+    if (indexes.count() > 0) {
+        QMimeData *data = itemView->model()->mimeData(indexes);
+        if (data == 0) {
+            return;
+        }
+
+        QDrag* drag = new QDrag(itemView);
+        QPixmap pixmap;
+        if (indexes.count() == 1) {
+            QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(itemView->model());
+            KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
+            const QModelIndex index = proxyModel->mapToSource(indexes.first());
+
+            const KFileItem item = dirModel->itemForIndex(index);
+            pixmap = item.pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
+        } else {
+            pixmap = KIcon("item-drag-multiple").pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
+        }
+        drag->setPixmap(pixmap);
+        drag->setMimeData(data);
+        drag->exec(supportedActions);
+    }
+}
+
+void DragAndDropHelper::drawHoverIndication(QWidget* widget,
+                                            const QRect& bounds,
+                                            const QBrush& brush)
+{
+    QPainter painter(widget);
+    painter.save();
+    QBrush blendedBrush(brush);
+    QColor color = blendedBrush.color();
+    color.setAlpha(64);
+    blendedBrush.setColor(color);
+
+    const int radius = 10;
+    QPainterPath path(QPointF(bounds.left(), bounds.top() + radius));
+    path.quadTo(bounds.left(), bounds.top(), bounds.left() + radius, bounds.top());
+    path.lineTo(bounds.right() - radius, bounds.top());
+    path.quadTo(bounds.right(), bounds.top(), bounds.right(), bounds.top() + radius);
+    path.lineTo(bounds.right(), bounds.bottom() - radius);
+    path.quadTo(bounds.right(), bounds.bottom(), bounds.right() - radius, bounds.bottom());
+    path.lineTo(bounds.left() + radius, bounds.bottom());
+    path.quadTo(bounds.left(), bounds.bottom(), bounds.left(), bounds.bottom() - radius);
+    path.closeSubpath();
+
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.fillPath(path, blendedBrush);
+    painter.restore();
+}