Merged very early alpha-version of Dolphin 2.0

Dolphin 2.0 will get a new view-engine with the
following improvements:
- Better performance
- Animated transitions
- No clipped filenames due to dynamic item-sizes
- Grouping support for all view-modes
- Non-rectangular selection areas
- Simplified code for better maintenance

More details will be provided in a blog-entry during
the next days.

Please note that the code is in a very
early alpha-stage and although the most tricky parts
have been implemented already very basic things like
drag and drop or selections have not been pushed yet.
Those things are rather trivial to implement but this
still will take some time.

1 files changed, 97 insertions, 0 deletions

diff --git a/src/kitemviews/kfileitemlistview.h b/src/kitemviews/kfileitemlistview.h
new file mode 100644
index 000000000..acd03ed22
--- /dev/null
+++ b/src/kitemviews/kfileitemlistview.h
@@ -0,0 +1,97 @@
+/***************************************************************************
+ *   Copyright (C) 2011 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            *
+ ***************************************************************************/
+
+#ifndef KFILEITEMLISTVIEW_H
+#define KFILEITEMLISTVIEW_H
+
+#include <libdolphin_export.h>
+
+#include <kitemviews/kitemlistview.h>
+
+class KFileItemModelRolesUpdater;
+class QTimer;
+
+class LIBDOLPHINPRIVATE_EXPORT KFileItemListView : public KItemListView
+{
+    Q_OBJECT
+
+public:
+    enum Layout
+    {
+        IconsLayout,
+        CompactLayout,
+        DetailsLayout
+    };
+
+    KFileItemListView(QGraphicsWidget* parent = 0);
+    virtual ~KFileItemListView();
+
+    void setPreviewsShown(bool show);
+    bool previewsShown() const;
+
+    void setItemLayout(Layout layout);
+    Layout itemLayout() const;
+
+    virtual QSizeF itemSizeHint(int index) const;
+    virtual QHash<QByteArray, QSizeF> visibleRoleSizes() const;
+
+protected:
+    virtual void initializeItemListWidget(KItemListWidget* item);
+    virtual void onModelChanged(KItemModelBase* current, KItemModelBase* previous);
+    virtual void onScrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous);
+    virtual void onItemSizeChanged(const QSizeF& current, const QSizeF& previous);
+    virtual void onOffsetChanged(qreal current, qreal previous);
+    virtual void onVisibleRolesChanged(const QHash<QByteArray, int>& current, const QHash<QByteArray, int>& previous);
+    virtual void onStyleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous);
+    virtual void onTransactionBegin();
+    virtual void onTransactionEnd();
+    virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
+
+protected slots:
+    virtual void slotItemsRemoved(const KItemRangeList& itemRanges);
+
+private slots:
+    void triggerVisibleIndexRangeUpdate();
+    void updateVisibleIndexRange();
+
+    void triggerIconSizeUpdate();
+    void updateIconSize();
+
+private:
+    QSizeF visibleRoleSizeHint(int index, const QByteArray& role) const;
+    void updateLayoutOfVisibleItems();
+    void updateTimersInterval();
+    void updateMinimumRolesWidths();
+
+private:
+    Layout m_itemLayout;
+
+    KFileItemModelRolesUpdater* m_modelRolesUpdater;
+    QTimer* m_updateVisibleIndexRangeTimer;
+    QTimer* m_updateIconSizeTimer;
+
+    // Cache for calculating visibleRoleSizes() in a fast way
+    QHash<QByteArray, int> m_minimumRolesWidths;
+
+    friend class KFileItemListViewTest; // For unit testing
+};
+
+#endif
+
+