src/dolphindetailsview.h

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz                                      *
   3  *   peter.penz@gmx.at                                                     *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
  19  ***************************************************************************/
  20
  21 #ifndef DOLPHINDETAILSVIEW_H
  22 #define DOLPHINDETAILSVIEW_H
  23
  24 #include <dolphinview.h>
  25 #include <QTreeView>
  26 #include <libdolphin_export.h>
  27
  28 class DolphinController;
  29
  30 /**
  31  * @brief Represents the details view which shows the name, size,
  32  *        date, permissions, owner and group of an item.
  33  *
  34  * The width of the columns is automatically adjusted in a way
  35  * that full available width of the view is used by stretching the width
  36  * of the name column.
  37  */
  38 class LIBDOLPHINPRIVATE_EXPORT DolphinDetailsView : public QTreeView
  39 {
  40     Q_OBJECT
  41
  42 public:
  43     explicit DolphinDetailsView(QWidget* parent, DolphinController* controller);
  44     virtual ~DolphinDetailsView();
  45
  46 protected:
  47     virtual bool event(QEvent* event);
  48     virtual QStyleOptionViewItem viewOptions() const;
  49     virtual void contextMenuEvent(QContextMenuEvent* event);
  50     virtual void mousePressEvent(QMouseEvent* event);
  51     virtual void mouseMoveEvent(QMouseEvent* event);
  52     virtual void mouseReleaseEvent(QMouseEvent* event);
  53     virtual void startDrag(Qt::DropActions supportedActions);
  54     virtual void dragEnterEvent(QDragEnterEvent* event);
  55     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  56     virtual void dragMoveEvent(QDragMoveEvent* event);
  57     virtual void dropEvent(QDropEvent* event);
  58     virtual void paintEvent(QPaintEvent* event);
  59     virtual void keyPressEvent(QKeyEvent* event);
  60     virtual void resizeEvent(QResizeEvent* event);
  61     virtual void wheelEvent(QWheelEvent* event);
  62     virtual void currentChanged(const QModelIndex& current, const QModelIndex& previous);
  63
  64 private slots:
  65     /**
  66      * Sets the sort indicator section of the header view
  67      * corresponding to \a sorting.
  68      */
  69     void setSortIndicatorSection(DolphinView::Sorting sorting);
  70
  71     /**
  72      * Sets the sort indicator order of the header view
  73      * corresponding to \a sortOrder.
  74      */
  75     void setSortIndicatorOrder(Qt::SortOrder sortOrder);
  76
  77     /**
  78      * Synchronizes the sorting state of the Dolphin menu 'View -> Sort'
  79      * with the current state of the details view.
  80      * @param column Index of the current sorting column.
  81      */
  82     void synchronizeSortingState(int column);
  83
  84     /**
  85      * Is invoked when the mouse cursor has entered an item. The controller
  86      * gets informed to emit the itemEntered() signal if the mouse cursor
  87      * is above the name column. Otherwise the controller gets informed
  88      * to emit the itemViewportEntered() signal (all other columns should
  89      * behave as viewport area).
  90      */
  91     void slotEntered(const QModelIndex& index);
  92
  93     /**
  94      * Updates the destination \a m_elasticBandDestination from
  95      * the elastic band to the current mouse position and triggers
  96      * an update.
  97      */
  98     void updateElasticBand();
  99
 100     /**
 101      * Returns the rectangle for the elastic band dependent from the
 102      * origin \a m_elasticBandOrigin, the current destination
 103      * \a m_elasticBandDestination and the viewport position.
 104      */
 105     QRect elasticBandRect() const;
 106
 107     void zoomIn();
 108     void zoomOut();
 109
 110     /**
 111      * Opens a context menu at the position \a pos and allows to
 112      * configure the visibility of the header columns.
 113      */
 114     void configureColumns(const QPoint& pos);
 115
 116     void updateColumnVisibility();
 117
 118     /**
 119      * Disables the automatical resizing of columns, if the user has resized the columns
 120      * with the mouse.
 121      */
 122     void slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize);
 123
 124     /**
 125      * Disables the automatical resizing of the columns. Per default all columns
 126      * are resized to use the maximum available width of the view as good as possible.
 127      */
 128     void disableAutoResizing();
 129
 130     void requestActivation();
 131
 132     void updateFont();
 133
 134 private:
 135     bool isZoomInPossible() const;
 136     bool isZoomOutPossible() const;
 137
 138     /**
 139      * Updates the size of the decoration dependent on the
 140      * icon size of the DetailsModeSettings. The controller
 141      * will get informed about possible zoom in/zoom out
 142      * operations.
 143      */
 144     void updateDecorationSize();
 145
 146     /** Return the upper left position in pixels of the viewport content. */
 147     QPoint contentsPos() const;
 148
 149     KFileItemDelegate::Information infoForColumn(int columnIndex) const;
 150
 151     /**
 152      * Resizes all columns in a way to use the whole available width of the view.
 153      */
 154     void resizeColumns();
 155
 156 private:
 157         bool m_autoResize;  // if true, the columns are resized automatically to the available width
 158
 159     DolphinController* m_controller;
 160
 161     QFont m_font;
 162     QSize m_decorationSize;
 163
 164     QRect m_dropRect;
 165
 166     bool m_showElasticBand;
 167     QPoint m_elasticBandOrigin;
 168     QPoint m_elasticBandDestination;
 169 };
 170
 171 #endif