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 class SelectionManager;
  30
  31 /**
  32  * @brief Represents the details view which shows the name, size,
  33  *        date, permissions, owner and group of an item.
  34  *
  35  * The width of the columns is automatically adjusted in a way
  36  * that full available width of the view is used by stretching the width
  37  * of the name column.
  38  */
  39 class LIBDOLPHINPRIVATE_EXPORT DolphinDetailsView : public QTreeView
  40 {
  41     Q_OBJECT
  42
  43 public:
  44     explicit DolphinDetailsView(QWidget* parent, DolphinController* controller);
  45     virtual ~DolphinDetailsView();
  46
  47 protected:
  48     virtual bool event(QEvent* event);
  49     virtual QStyleOptionViewItem viewOptions() const;
  50     virtual void contextMenuEvent(QContextMenuEvent* event);
  51     virtual void mousePressEvent(QMouseEvent* event);
  52     virtual void mouseMoveEvent(QMouseEvent* event);
  53     virtual void mouseReleaseEvent(QMouseEvent* event);
  54     virtual void startDrag(Qt::DropActions supportedActions);
  55     virtual void dragEnterEvent(QDragEnterEvent* event);
  56     virtual void dragLeaveEvent(QDragLeaveEvent* event);
  57     virtual void dragMoveEvent(QDragMoveEvent* event);
  58     virtual void dropEvent(QDropEvent* event);
  59     virtual void paintEvent(QPaintEvent* event);
  60     virtual void keyPressEvent(QKeyEvent* event);
  61     virtual void keyReleaseEvent(QKeyEvent* event);
  62     virtual void resizeEvent(QResizeEvent* event);
  63     virtual void wheelEvent(QWheelEvent* event);
  64     virtual void currentChanged(const QModelIndex& current, const QModelIndex& previous);
  65     virtual bool eventFilter(QObject* watched, QEvent* event);
  66
  67 private slots:
  68     /**
  69      * Sets the sort indicator section of the header view
  70      * corresponding to \a sorting.
  71      */
  72     void setSortIndicatorSection(DolphinView::Sorting sorting);
  73
  74     /**
  75      * Sets the sort indicator order of the header view
  76      * corresponding to \a sortOrder.
  77      */
  78     void setSortIndicatorOrder(Qt::SortOrder sortOrder);
  79
  80     /**
  81      * Synchronizes the sorting state of the Dolphin menu 'View -> Sort'
  82      * with the current state of the details view.
  83      * @param column Index of the current sorting column.
  84      */
  85     void synchronizeSortingState(int column);
  86
  87     /**
  88      * Is invoked when the mouse cursor has entered an item. The controller
  89      * gets informed to emit the itemEntered() signal if the mouse cursor
  90      * is above the name column. Otherwise the controller gets informed
  91      * to emit the itemViewportEntered() signal (all other columns should
  92      * behave as viewport area).
  93      */
  94     void slotEntered(const QModelIndex& index);
  95
  96     /**
  97      * Updates the destination \a m_elasticBandDestination from
  98      * the elastic band to the current mouse position and triggers
  99      * an update.
 100      */
 101     void updateElasticBand();
 102
 103     /**
 104      * Returns the rectangle for the elastic band dependent from the
 105      * origin \a m_elasticBandOrigin, the current destination
 106      * \a m_elasticBandDestination and the viewport position.
 107      */
 108     QRect elasticBandRect() const;
 109
 110     void zoomIn();
 111     void zoomOut();
 112
 113     /**
 114      * Opens a context menu at the position \a pos and allows to
 115      * configure the visibility of the header columns.
 116      */
 117     void configureColumns(const QPoint& pos);
 118
 119     void updateColumnVisibility();
 120
 121     /**
 122      * Disables the automatical resizing of columns, if the user has resized the columns
 123      * with the mouse.
 124      */
 125     void slotHeaderSectionResized(int logicalIndex, int oldSize, int newSize);
 126
 127     /**
 128      * Disables the automatical resizing of the columns. Per default all columns
 129      * are resized to use the maximum available width of the view as good as possible.
 130      */
 131     void disableAutoResizing();
 132
 133     void requestActivation();
 134
 135     void updateFont();
 136
 137 private:
 138     bool isZoomInPossible() const;
 139     bool isZoomOutPossible() const;
 140
 141     /**
 142      * Updates the size of the decoration dependent on the
 143      * icon size of the DetailsModeSettings. The controller
 144      * will get informed about possible zoom in/zoom out
 145      * operations.
 146      */
 147     void updateDecorationSize();
 148
 149     /** Return the upper left position in pixels of the viewport content. */
 150     QPoint contentsPos() const;
 151
 152     KFileItemDelegate::Information infoForColumn(int columnIndex) const;
 153
 154     /**
 155      * Resizes all columns in a way to use the whole available width of the view.
 156      */
 157     void resizeColumns();
 158
 159 private:
 160         bool m_autoResize;  // if true, the columns are resized automatically to the available width
 161     bool m_expandingTogglePressed;
 162     bool m_keyPressed;  // true if a key is pressed currently; info used by currentChanged()
 163
 164     DolphinController* m_controller;
 165     SelectionManager* m_selectionManager;
 166
 167     QFont m_font;
 168     QSize m_decorationSize;
 169
 170     QRect m_dropRect;
 171
 172     bool m_showElasticBand;
 173     QPoint m_elasticBandOrigin;
 174     QPoint m_elasticBandDestination;
 175 };
 176
 177 #endif