Unify the search interface for non-indexed and indexed folders

[dolphin.git] / src / draganddrophelper.cpp

diff --git a/src/draganddrophelper.cpp b/src/draganddrophelper.cpp
index 30804c2c1379da4e1908acb638084945c00292a5..88dca9b40b9fc29114eb52327e014f1ed0419f67 100644 (file)
--- a/src/draganddrophelper.cpp
+++ b/src/draganddrophelper.cpp
@@ -20,19 +20,19 @@
 
 #include "draganddrophelper.h"
 #include "dolphiniconsview.h"
-#include "dolphincontroller.h"
+#include "dolphinviewcontroller.h"
 
 #include <kdirmodel.h>
 #include <kfileitem.h>
 #include <kicon.h>
 #include <klocale.h>
-#include <kdebug.h>
 #include <konq_operations.h>
 
 #include <QAbstractItemView>
 #include <QAbstractProxyModel>
 #include <QtDBus>
 #include <QDrag>
+#include <QPainter>
 
 class DragAndDropHelperSingleton
 {
@@ -53,35 +53,41 @@ bool DragAndDropHelper::isMimeDataSupported(const QMimeData* mimeData) const
 
 void DragAndDropHelper::startDrag(QAbstractItemView* itemView,
                                   Qt::DropActions supportedActions,
-                                  DolphinController* controller)
+                                  DolphinViewController* dolphinViewController)
 {
-    QModelIndexList indexes = itemView->selectionModel()->selectedIndexes();
-    if (indexes.count() > 0) {
+    // 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 (controller != 0) {
-            controller->emitHideToolTip();
+        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);
-        } else {
-            pixmap = KIcon("document-multiple").pixmap(KIconLoader::SizeMedium, KIconLoader::SizeMedium);
-        }
-        drag->setPixmap(pixmap);
+        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,
@@ -96,7 +102,7 @@ void DragAndDropHelper::dropUrls(const KFileItem& destItem,
     if (mimeData->hasFormat("application/x-kde-dndextract")) {
         QString remoteDBusClient = mimeData->data("application/x-kde-dndextract");
         QDBusMessage message = QDBusMessage::createMethodCall(remoteDBusClient, "/DndExtract",
-                                                              "org.kde.DndExtract", "extractFilesTo");
+                                                              "org.kde.DndExtract", "extractSelectedFilesTo");
         message.setArguments(QVariantList() << destination.path());
         QDBusConnection::sessionBus().call(message);
     } else {
@@ -115,7 +121,68 @@ void DragAndDropHelper::dropUrls(const KFileItem& destItem,
 }
 
 DragAndDropHelper::DragAndDropHelper()
+    : m_dragSource(0)
 {
 }
 
+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;
+    }
+
+    // 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;
+        }
+    }
+    
+    return dragPixmap;
+}
+
 #include "draganddrophelper.moc"