src/kitemviews/kfileitemlistwidget.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 KFILEITEMLISTWIDGET_H
  21 #define KFILEITEMLISTWIDGET_H
  22
  23 #include <libdolphin_export.h>
  24
  25 #include <kitemviews/kitemlistwidget.h>
  26
  27 #include <QPixmap>
  28 #include <QPointF>
  29 #include <QStaticText>
  30
  31 class LIBDOLPHINPRIVATE_EXPORT KFileItemListWidget : public KItemListWidget
  32 {
  33     Q_OBJECT
  34
  35 public:
  36     enum Layout
  37     {
  38         IconsLayout,
  39         CompactLayout,
  40         DetailsLayout
  41     };
  42
  43     KFileItemListWidget(QGraphicsItem* parent);
  44     virtual ~KFileItemListWidget();
  45
  46     void setLayout(Layout layout);
  47     Layout layout() const;
  48
  49     virtual void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget = 0);
  50
  51     virtual QRectF iconRect() const;
  52     virtual QRectF textRect() const;
  53     virtual QRectF expansionToggleRect() const;
  54
  55     /**
  56      * @return Shown string for the role \p role of the item with the values \p values.
  57      */
  58     // TODO: Move this method to a helper class shared by KFileItemListWidget and
  59     // KFileItemListView to share information that is required to calculate the size hints
  60     // in KFileItemListView and to represent the actual data in KFileItemListWidget.
  61     static QString roleText(const QByteArray& role, const QHash<QByteArray, QVariant>& values);
  62
  63 protected:
  64     /**
  65      * Invalidates the cache which results in calling KFileItemListWidget::refreshCache() as
  66      * soon as the item need to gets repainted.
  67      */
  68     void invalidateCache();
  69
  70     /**
  71      * Is called if the cache got invalidated by KFileItemListWidget::invalidateCache().
  72      * The default implementation is empty.
  73      */
  74     virtual void refreshCache();
  75
  76     void setTextColor(const QColor& color);
  77     QColor textColor() const;
  78
  79     void setOverlay(const QPixmap& overlay);
  80     QPixmap overlay() const;
  81
  82     virtual void dataChanged(const QHash<QByteArray, QVariant>& current, const QSet<QByteArray>& roles = QSet<QByteArray>());
  83     virtual void visibleRolesChanged(const QList<QByteArray>& current, const QList<QByteArray>& previous);
  84     virtual void visibleRolesSizesChanged(const QHash<QByteArray, QSizeF>& current, const QHash<QByteArray, QSizeF>& previous);
  85     virtual void styleOptionChanged(const KItemListStyleOption& current, const KItemListStyleOption& previous);
  86     virtual void hoveredChanged(bool hovered);
  87     virtual void resizeEvent(QGraphicsSceneResizeEvent* event);
  88
  89 private:
  90     enum TextId {
  91         Name,
  92         Size,
  93         Date,
  94         Permissions,
  95         Owner,
  96         Group,
  97         Type,
  98         Destination,
  99         Path,
 100         TextIdCount // Mandatory last entry
 101     };
 102
 103     void triggerCacheRefreshing();
 104     void updateExpansionArea();
 105     void updatePixmapCache();
 106
 107     void updateTextsCache();
 108     void updateIconsLayoutTextCache();
 109     void updateCompactLayoutTextCache();
 110     void updateDetailsLayoutTextCache();
 111
 112     void updateAdditionalInfoTextColor();
 113
 114     void drawPixmap(QPainter* painter, const QPixmap& pixmap);
 115
 116     static QPixmap pixmapForIcon(const QString& name, int size);
 117     static TextId roleTextId(const QByteArray& role);
 118
 119 private:
 120     bool m_isDir;
 121     bool m_dirtyLayout;
 122     bool m_dirtyContent;
 123     QSet<QByteArray> m_dirtyContentRoles;
 124
 125     Layout m_layout;
 126     QPointF m_pixmapPos;
 127     QPixmap m_pixmap;
 128     QSize m_scaledPixmapSize;
 129
 130     QRectF m_hoverPixmapRect;
 131     QPixmap m_hoverPixmap;
 132
 133     QPointF m_textPos[TextIdCount];
 134     QStaticText m_text[TextIdCount];
 135     QRectF m_textRect;
 136
 137     QList<QByteArray> m_sortedVisibleRoles;
 138
 139     QRectF m_expansionArea;
 140
 141     QColor m_customTextColor;
 142     QColor m_additionalInfoTextColor;
 143
 144     QPixmap m_overlay;
 145 };
 146
 147 #endif
 148
 149