00001
00042 #include "aiundomodel.hpp"
00043
00044 using namespace AiFractals;
00045
00046 AiUndoModel::AiUndoModel( QObject *parent )
00047 :QAbstractItemModel(parent)
00048 {
00049 }
00050
00051 QUndoStack *AiUndoModel::getStack() const
00052 {
00053 return m_stack;
00054 }
00055
00056 void AiUndoModel::setStack( QUndoStack * stack )
00057 {
00058 m_stack = stack;
00059 connect(m_stack, SIGNAL(indexChanged(int)), this, SLOT(stackChanged()));
00060 }
00061
00062 QModelIndex AiUndoModel::index( int row, int column,
00063 const QModelIndex &parent ) const
00064 {
00065 return this->createIndex(row, column);
00066 }
00067
00068 QModelIndex AiUndoModel::parent(const QModelIndex&) const
00069 {
00070 return QModelIndex();
00071 }
00072
00073 int AiUndoModel::rowCount(const QModelIndex &parent ) const
00074 {
00075 return m_stack->count();
00076 }
00077
00078 int AiUndoModel::columnCount(const QModelIndex &parent ) const
00079 {
00080 return 1;
00081 }
00082
00083 QVariant AiUndoModel::data(const QModelIndex &index, int role ) const
00084 {
00085 if( role == Qt::DecorationRole )
00086 {
00087 const AiCommand * cmd = (AiCommand*) m_stack->command( index.row() );
00088 return QIcon( QPixmap::fromImage(cmd->image.scaled(60, 60,
00089 Qt::KeepAspectRatio, Qt::SmoothTransformation) ) );
00090 }
00091
00092 return QVariant();
00093 }
00094
00095 QModelIndex AiUndoModel::selectedIndex() const
00096 {
00097 return this->createIndex( m_stack->index(), 0 ) ;
00098 }
00099
00100
00101 void AiUndoModel::stackChanged()
00102 {
00103 reset();
00104 }
00105
00106 void AiUndoModel::setStackCurrentIndex( const QModelIndex &index )
00107 {
00108 if ( index.row() <= m_stack->count() )
00109 {
00110 m_stack->setIndex( index.row() + 1 );
00111 }
00112 }
