Add filesystem widget

imageringlist.cpp

@@ -78,7 +78,7 @@ void Image::imageLoaded(QImage img, void *rawImage, ImageInfoData info)
     }
 }
 
-ImageRingList::ImageRingList(QObject *parent) : QObject(parent)
+ImageRingList::ImageRingList(QObject *parent) : QAbstractItemModel(parent)
   , m_liveMode(false)
   , m_analyzeLevel(None)
 {
@@ -118,7 +118,10 @@ bool ImageRingList::setDir(const QString path, const QString &currentFile)
 void ImageRingList::setFile(const QString &file)
 {
     QFileInfo info(file);
-    setDir(info.absolutePath(), file);
+    if(info.isDir())
+        setDir(file);
+    else
+        setDir(info.absolutePath(), file);
 }
 
 ImagePtr ImageRingList::currentImage()
@@ -180,10 +183,90 @@ AnalyzeLevel ImageRingList::analyzeLevel() const
     return m_analyzeLevel;
 }
 
+void ImageRingList::loadFile(int row)
+{
+    if(row < m_images.size())
+    {
+        m_firstImage = m_currImage = m_lastImage = m_images.begin()+row;
+        if(m_images.empty())
+            return;
+
+        (*m_currImage)->load();
+
+        m_width = DEFAULT_WIDTH<m_images.size()/2 ? DEFAULT_WIDTH : m_images.size()/2;
+        if(m_liveMode)
+            m_width = 0;
+
+        for(int i=0; i<m_width; i++)
+        {
+            m_firstImage = decrement(m_firstImage);
+            (*m_firstImage)->load();
+            m_lastImage = increment(m_lastImage);
+            (*m_lastImage)->load();
+        }
+        if(m_lastImage != m_firstImage)
+        {
+            QList<ImagePtr>::iterator iter = increment(m_lastImage);
+            while(m_firstImage != iter)
+            {
+                (*iter)->release();
+                iter = increment(iter);
+            }
+        }
+    }
+}
+
+QModelIndex ImageRingList::index(int row, int column, const QModelIndex &parent) const
+{
+    return createIndex(row, column, m_images.at(row).get());
+}
+
+QModelIndex ImageRingList::parent(const QModelIndex &child) const
+{
+    return QModelIndex();
+}
+
+int ImageRingList::rowCount(const QModelIndex &parent) const
+{
+    if(parent == QModelIndex())
+        return m_images.size();
+    else
+        return 0;
+}
+
+int ImageRingList::columnCount(const QModelIndex &parent) const
+{
+    return 1;
+}
+
+QVariant ImageRingList::data(const QModelIndex &index, int role) const
+{
+    switch(role)
+    {
+    case Qt::DisplayRole:
+    {
+        QFileInfo info(m_images.at(index.row())->name());
+        return info.fileName();
+    }
+    default:
+        return QVariant();
+    }
+}
+
+QVariant ImageRingList::headerData(int section, Qt::Orientation orientation, int role) const
+{
+    if(section==0 && orientation==Qt::Horizontal && role==Qt::DisplayRole)
+    {
+        return tr("Name");
+    }
+    return QVariant();
+}
+
 void ImageRingList::setFiles(const QStringList files, const QString &currentFile)
 {
     QThreadPool::globalInstance()->clear();
     QThreadPool::globalInstance()->waitForDone();
+    beginResetModel();
     m_images.clear();
     foreach(const QString &file, files)
     {
@@ -196,23 +279,8 @@ void ImageRingList::setFiles(const QStringList files, const QString &currentFile
     if(index < 0)
         index = 0;
 
-    m_firstImage = m_currImage = m_lastImage = m_images.begin()+index;
-    if(m_images.empty())
-        return;
-
-    (*m_currImage)->load();
-
-    m_width = DEFAULT_WIDTH<m_images.size()/2 ? DEFAULT_WIDTH : m_images.size()/2;
-    if(m_liveMode)
-        m_width = 0;
-
-    for(int i=0; i<m_width; i++)
-    {
-        m_firstImage = decrement(m_firstImage);
-        (*m_firstImage)->load();
-        m_lastImage = increment(m_lastImage);
-        (*m_lastImage)->load();
-    }
+    endResetModel();
+    loadFile(index);
 }
 
 QList<ImagePtr>::iterator ImageRingList::increment(QList<ImagePtr>::iterator iter)
@@ -237,6 +305,7 @@ void ImageRingList::imageLoaded(Image *image)
     {
         emit pixmapLoaded(image);
         emit infoLoaded(image->info());
+        emit currentImageChanged(m_currImage-m_images.begin());
     }
 }
 
@@ -248,5 +317,5 @@ void ImageRingList::dirChanged(QString dir)
         currentFile = (*m_currImage)->name();
 
     setDir(dir, currentFile);
-    emit currentImageChanged();
+    emit currentImageChanged(m_currImage-m_images.begin());
 }