transmission/qt/file-tree.h

157 lines
4.7 KiB
C++

/*
* This file Copyright (C) 2009-2010 Mnemosyne LLC
*
* This file is licensed by the GPL version 2. Works owned by the
* Transmission project are granted a special exemption to clause 2(b)
* so that the bulk of its code can remain under the MIT license.
* This exemption does not extend to derived works not owned by
* the Transmission project.
*
* $Id$
*/
#ifndef QTR_TREE_FILE_MODEL
#define QTR_TREE_FILE_MODEL
#include <QAbstractItemModel>
#include <QObject>
#include <QList>
#include <QString>
#include <QSet>
#include <QTreeView>
#include <QVariant>
#include <QItemDelegate>
#include "torrent.h" // FileList
/****
*****
****/
class FileTreeItem: public QObject
{
Q_OBJECT;
enum { LOW=(1<<0), NORMAL=(1<<1), HIGH=(1<<2) };
public:
virtual ~FileTreeItem( );
FileTreeItem( int fileIndex, const QString& name="" ):
myIndex(fileIndex), myParent(0), myName(name),
myPriority(0), myIsWanted(0),
myHaveSize(0), myTotalSize(0) { }
public:
void appendChild( FileTreeItem *child );
FileTreeItem * child( const QString& filename );
FileTreeItem * child( int row ) { return myChildren.at( row ); }
int childCount( ) const { return myChildren.size( ); }
FileTreeItem * parent( ) { return myParent; }
const FileTreeItem * parent( ) const { return myParent; }
int row( ) const;
const QString& name( ) const { return myName; }
QVariant data( int column ) const;
bool update( int index, bool want, int priority, uint64_t total, uint64_t have );
void twiddleWanted( QSet<int>& fileIds, bool& );
void twiddlePriority( QSet<int>& fileIds, int& );
private:
void setSubtreePriority( int priority, QSet<int>& fileIds );
void setSubtreeWanted( bool, QSet<int>& fileIds );
QString priorityString( ) const;
void getSubtreeSize( uint64_t& have, uint64_t& total ) const;
QString fileSizeName( ) const;
double progress( ) const;
int priority( ) const;
int isSubtreeWanted( ) const;
int myIndex;
FileTreeItem * myParent;
QList<FileTreeItem*> myChildren;
const QString myName;
int myPriority;
bool myIsWanted;
uint64_t myHaveSize;
uint64_t myTotalSize;
};
class FileTreeModel: public QAbstractItemModel
{
Q_OBJECT
public:
FileTreeModel( QObject *parent = 0);
~FileTreeModel( );
public:
QVariant data( const QModelIndex &index, int role = Qt::DisplayRole ) const;
Qt::ItemFlags flags( const QModelIndex& index ) const;
QVariant headerData( int section, Qt::Orientation orientation, int role = Qt::DisplayRole ) const;
QModelIndex index( int row, int column, const QModelIndex& parent = QModelIndex() ) const;
QModelIndex parent( const QModelIndex& child ) const;
QModelIndex parent( const QModelIndex& child, int column ) const;
int rowCount( const QModelIndex& parent = QModelIndex( ) ) const;
int columnCount( const QModelIndex &parent = QModelIndex( ) ) const;
signals:
void priorityChanged( const QSet<int>& fileIndices, int );
void wantedChanged( const QSet<int>& fileIndices, bool );
public:
void clear( );
void addFile( int index, const QString& filename,
bool wanted, int priority,
uint64_t size, uint64_t have,
QList<QModelIndex>& rowsAdded );
private:
void clearSubtree( const QModelIndex & );
QModelIndex indexOf( FileTreeItem *, int column ) const;
void parentsChanged( const QModelIndex &, int column );
void subtreeChanged( const QModelIndex &, int column );
private:
FileTreeItem * rootItem;
public slots:
void clicked ( const QModelIndex & index );
};
class FileTreeDelegate: public QItemDelegate
{
Q_OBJECT
public:
FileTreeDelegate( QObject * parent=0 ): QItemDelegate( parent ) { }
virtual ~FileTreeDelegate( ) { }
void paint( QPainter * painter,
const QStyleOptionViewItem & option,
const QModelIndex & index ) const;
};
class FileTreeView: public QTreeView
{
Q_OBJECT
public:
FileTreeView( QWidget * parent=0 );
virtual ~FileTreeView( ) { }
void clear( );
void update( const FileList& files );
signals:
void priorityChanged( const QSet<int>& fileIndices, int );
void wantedChanged( const QSet<int>& fileIndices, bool );
protected:
bool eventFilter( QObject *, QEvent * );
private:
FileTreeModel myModel;
FileTreeDelegate myDelegate;
};
#endif