X-Git-Url: https://cloud.milkyroute.net/gitweb/dolphin.git/blobdiff_plain/784c525225437a7d9cc130bb84e492d1b21be1ea..49eb864b03b6370e403c6f048ab18d1478eab045:/src/draganddrophelper.cpp

diff --git a/src/draganddrophelper.cpp b/src/draganddrophelper.cpp
index 9aa09ee30..88dca9b40 100644
--- a/src/draganddrophelper.cpp
+++ b/src/draganddrophelper.cpp
@@ -1,5 +1,6 @@
 /***************************************************************************
  *   Copyright (C) 2007 by Peter Penz <peter.penz@gmx.at>                  *
+ *   Copyright (C) 2007 by David Faure <faure@kde.org>                     *
  *                                                                         *
  *   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  *
@@ -19,78 +20,169 @@
 
 #include "draganddrophelper.h"
 #include "dolphiniconsview.h"
+#include "dolphinviewcontroller.h"
 
 #include <kdirmodel.h>
+#include <kfileitem.h>
 #include <kicon.h>
+#include <klocale.h>
+#include <konq_operations.h>
 
 #include <QAbstractItemView>
 #include <QAbstractProxyModel>
-#include <QBrush>
+#include <QtDBus>
 #include <QDrag>
 #include <QPainter>
-#include <QRect>
-#include <QWidget>
 
-void DragAndDropHelper::startDrag(QAbstractItemView* itemView, Qt::DropActions supportedActions)
+class DragAndDropHelperSingleton
 {
-    QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
-    if (indexes.count() > 0) {
+public:
+    DragAndDropHelper instance;
+};
+K_GLOBAL_STATIC(DragAndDropHelperSingleton, s_dragAndDropHelper)
+
+DragAndDropHelper& DragAndDropHelper::instance()
+{
+    return s_dragAndDropHelper->instance;
+}
+
+bool DragAndDropHelper::isMimeDataSupported(const QMimeData* mimeData) const
+{
+    return mimeData->hasUrls() || mimeData->hasFormat("application/x-kde-dndextract");
+}
+
+void DragAndDropHelper::startDrag(QAbstractItemView* itemView,
+                                  Qt::DropActions supportedActions,
+                                  DolphinViewController* dolphinViewController)
+{
+    // Do not start a new drag until the previous one has been finished.
+    // This is a (possibly temporary) fix for bug #187884.
+    static bool isDragging = false;
+    if (isDragging) {
+        return;
+    }
+    isDragging = true;
+
+    const QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
+    if (!indexes.isEmpty()) {
         QMimeData *data = itemView->model()->mimeData(indexes);
         if (data == 0) {
             return;
         }
 
+        if (dolphinViewController != 0) {
+            dolphinViewController->requestToolTipHiding();
+        }
+
         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);
+        drag->setPixmap(createDragPixmap(itemView));
+        drag->setMimeData(data);
+
+        m_dragSource = itemView;
+        drag->exec(supportedActions, Qt::IgnoreAction);
+        m_dragSource = 0;
+    }
+    isDragging = false;
+}
+
+bool DragAndDropHelper::isDragSource(QAbstractItemView* itemView) const
+{
+    return (m_dragSource != 0) && (m_dragSource == itemView);
+}
+
+void DragAndDropHelper::dropUrls(const KFileItem& destItem,
+                                 const KUrl& destPath,
+                                 QDropEvent* event,
+                                 QWidget* widget)
+{
+    const bool dropToItem = !destItem.isNull() && (destItem.isDir() || destItem.isDesktopFile());
+    const KUrl destination = dropToItem ? destItem.url() : destPath;
+
+    const QMimeData* mimeData = event->mimeData();
+    if (mimeData->hasFormat("application/x-kde-dndextract")) {
+        QString remoteDBusClient = mimeData->data("application/x-kde-dndextract");
+        QDBusMessage message = QDBusMessage::createMethodCall(remoteDBusClient, "/DndExtract",
+                                                              "org.kde.DndExtract", "extractSelectedFilesTo");
+        message.setArguments(QVariantList() << destination.path());
+        QDBusConnection::sessionBus().call(message);
+    } else {
+        const KUrl::List urls = KUrl::List::fromMimeData(event->mimeData());
+        const int urlsCount = urls.count();
+        if (urlsCount == 0) {
+            // TODO: handle dropping of other data
+        } else if ((urlsCount == 1) && (urls.first() == destination)) {
+            emit errorMessage(i18nc("@info:status", "A folder cannot be dropped into itself"));
+        } else if (dropToItem) {
+            KonqOperations::doDrop(destItem, destination, event, widget);
         } else {
-            pixmap = KIcon("document-multiple").pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
+            KonqOperations::doDrop(KFileItem(), destination, event, widget);
         }
-        drag->setPixmap(pixmap);
-        drag->setMimeData(data);
-        drag->exec(supportedActions, Qt::MoveAction);
     }
 }
 
-void DragAndDropHelper::drawHoverIndication(QAbstractItemView* itemView,
-                                            const QRect& bounds,
-                                            const QBrush& brush)
+DragAndDropHelper::DragAndDropHelper()
+    : m_dragSource(0)
 {
-    if (bounds.isEmpty()) {
-        return;
+}
+
+QPixmap DragAndDropHelper::createDragPixmap(QAbstractItemView* itemView) const
+{
+    const QModelIndexList selectedIndexes = itemView->selectionModel()->selectedIndexes();    
+    Q_ASSERT(!selectedIndexes.isEmpty());
+    
+    QAbstractProxyModel* proxyModel = static_cast<QAbstractProxyModel*>(itemView->model());
+    KDirModel* dirModel = static_cast<KDirModel*>(proxyModel->sourceModel());
+    
+    const int itemCount = selectedIndexes.count();
+    
+    // If more than one item is dragged, align the items inside a
+    // rectangular grid. The maximum grid size is limited to 5 x 5 items.
+    int xCount = 3;
+    int size = KIconLoader::SizeMedium;
+    if (itemCount > 16) {
+        xCount = 5;
+        size = KIconLoader::SizeSmall;
+    } else if (itemCount > 9) {
+        xCount = 4;
+        size = KIconLoader::SizeSmallMedium;
+    }
+    
+    if (itemCount < xCount) {
+        xCount = itemCount;
+    }
+    
+    int yCount = itemCount / xCount;
+    if (itemCount % xCount != 0) {
+        ++yCount;
+    }
+    if (yCount > xCount) {
+        yCount = xCount;
     }
 
-    QWidget* widget = itemView->viewport();
-
-    QPainter painter(widget);
-    painter.save();
-    QBrush blendedBrush(brush);
-    QColor color = blendedBrush.color();
-    color.setAlpha(64);
-    blendedBrush.setColor(color);
-
-    if (dynamic_cast<DolphinIconsView*>(itemView)) {
-        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);
-    } else {
-        painter.fillRect(bounds, blendedBrush);
+    // Draw the selected items into the grid cells    
+    QPixmap dragPixmap(xCount * size + xCount - 1, yCount * size + yCount - 1);
+    dragPixmap.fill(Qt::transparent);
+    
+    QPainter painter(&dragPixmap);
+    int x = 0;
+    int y = 0;
+    foreach (const QModelIndex& selectedIndex, selectedIndexes) {
+        const QModelIndex index = proxyModel->mapToSource(selectedIndex);
+        const KFileItem item = dirModel->itemForIndex(index);
+        const QPixmap pixmap = item.pixmap(size, size);
+        painter.drawPixmap(x, y, pixmap);
+        
+        x += size + 1;
+        if (x >= dragPixmap.width()) {
+            x = 0;
+            y += size + 1;
+        }
+        if (y >= dragPixmap.height()) {
+            break;
+        }
     }
-    painter.restore();
+    
+    return dragPixmap;
 }
+
+#include "draganddrophelper.moc"