src/kitemviews/kfileitemlistview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2011 by Peter Penz <peter.penz19@gmail.com>             *
   3  *                                                                         *
   4  *   This program is free software; you can redistribute it and/or modify  *
   5  *   it under the terms of the GNU General Public License as published by  *
   6  *   the Free Software Foundation; either version 2 of the License, or     *
   7  *   (at your option) any later version.                                   *
   8  *                                                                         *
   9  *   This program is distributed in the hope that it will be useful,       *
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  12  *   GNU General Public License for more details.                          *
  13  *                                                                         *
  14  *   You should have received a copy of the GNU General Public License     *
  15  *   along with this program; if not, write to the                         *
  16  *   Free Software Foundation, Inc.,                                       *
  17  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  18  ***************************************************************************/
  19
  20 #ifndef KFILEITEMLISTVIEW_H
  21 #define KFILEITEMLISTVIEW_H
  22
  23 #include <libdolphin_export.h>
  24
  25 #include <kitemviews/kitemlistview.h>
  26
  27 class KFileItemModelRolesUpdater;
  28 class QTimer;
  29
  30 class LIBDOLPHINPRIVATE_EXPORT KFileItemListView : public KItemListView
  31 {
  32     Q_OBJECT
  33
  34 public:
  35     enum Layout
  36     {
  37         IconsLayout,
  38         CompactLayout,
  39         DetailsLayout
  40     };
  41
  42     KFileItemListView(QGraphicsWidget* parent = 0);
  43     virtual ~KFileItemListView();
  44
  45     void setPreviewsShown(bool show);
  46     bool previewsShown() const;
  47
  48     void setItemLayout(Layout layout);
  49     Layout itemLayout() const;
  50
  51     /** @reimp */
  52     virtual QSizeF itemSizeHint(int index) const;
  53
  54     /** @reimp */
  55     virtual QHash<QByteArray, QSizeF> visibleRoleSizes() const;
  56
  57     /** @reimp */
  58     virtual QPixmap createDragPixmap(const QSet<int>& indexes) const;
  59
  60 protected:
  61     virtual void initializeItemListWidget(KItemListWidget* item);
  62     virtual void onModelChanged(KItemModelBase* current, KItemModelBase* previous);
  63     virtual void onScrollOrientationChanged(Qt::Orientation current, Qt::Orientation previous);
  64     virtual void onItemSizeChanged(const QSizeF& current, const QSizeF& previous);
  65     virtual void onOffsetChanged(qreal current, qreal previous);
  66     virtual void onVisibleRolesChanged(const QHash<QByteArray, int>& current, const QHash<QByteArray, int>& previous);
  67     virtual void onStyleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous);
  68     virtual void onTransactionBegin();
  69     virtual void onTransactionEnd();
  70     virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
  71
  72 protected slots:
  73     virtual void slotItemsRemoved(const KItemRangeList& itemRanges);
  74
  75 private slots:
  76     void triggerVisibleIndexRangeUpdate();
  77     void updateVisibleIndexRange();
  78
  79     void triggerIconSizeUpdate();
  80     void updateIconSize();
  81
  82 private:
  83     QSizeF visibleRoleSizeHint(int index, const QByteArray& role) const;
  84     void updateLayoutOfVisibleItems();
  85     void updateTimersInterval();
  86     void updateMinimumRolesWidths();
  87
  88 private:
  89     Layout m_itemLayout;
  90
  91     KFileItemModelRolesUpdater* m_modelRolesUpdater;
  92     QTimer* m_updateVisibleIndexRangeTimer;
  93     QTimer* m_updateIconSizeTimer;
  94
  95     // Cache for calculating visibleRoleSizes() in a fast way
  96     QHash<QByteArray, int> m_minimumRolesWidths;
  97
  98     friend class KFileItemListViewTest; // For unit testing
  99 };
 100
 101 #endif
 102
 103