Read JSON from ffprobe

Use JSON output from ffprobe instead of string parsing to get some kind
of type safety.

For doing that, some changes were needed in FileView: Use delegates for
displaying Duration and Bitrate instead of mangling output in
Qt::Displayrole.

To reuse code, move all delegates from the new Archive to a separate
file.

And, of course, the initial objective: Show the accumulated size and
duration of selected files in the status bar from the experimental
archive.

1 files changed, 26 insertions, 0 deletions

diff --git a/archivecontroller.cpp b/archivecontroller.cpp
index 30d94f3..bda54c2 100644
--- a/archivecontroller.cpp
+++ b/archivecontroller.cpp
@@ -61,6 +61,7 @@ void ArchiveController::setMetadata(QTextEdit *metadata){
 void ArchiveController::init(){
     connect(mArchiveSelection, SIGNAL(selectionChanged(QItemSelection,QItemSelection)), this, SLOT(treeSelectionChanged(QItemSelection,QItemSelection)));
     connect(mArchiveFiles, SIGNAL(doubleClicked(QModelIndex)), this, SLOT(fileDoubleClicked(QModelIndex)));
+    connect(mFileSelection, SIGNAL(selectionChanged(QItemSelection,QItemSelection)), this, SLOT(fileSelectionChanged(QItemSelection,QItemSelection)));
 }
 
 void ArchiveController::playSelectedFiles(){
@@ -211,6 +212,31 @@ void ArchiveController::treeSelectionChanged(const QItemSelection &selected, con
     }
 }
 
+void ArchiveController::fileSelectionChanged(const QItemSelection &selected, const QItemSelection &deselected){
+    Q_UNUSED(selected);
+    Q_UNUSED(deselected);
+    QModelIndexList sel = mapToSource(mArchiveFilesProxy, mFileSelection->selectedRows());
+    if(sel.isEmpty()){
+        return;
+    }
+    qint64 size = 0;
+    qint64 duration = 0;
+    bool maybeMore = false;
+    foreach(QModelIndex i, sel){
+        size += i.data(ArchiveFilesModel::SizeRole).toInt();
+        int type = i.data(ArchiveFilesModel::FileTypeRole).toInt();
+        if(type == ArchiveFilesModel::Movie){
+            int dur = i.data(ArchiveFilesModel::SizeDurRole).toInt();
+            duration += dur;
+            if(dur == 0){
+                maybeMore = true;
+            }
+        }
+    }
+    emit sizeChanged(size);
+    emit durationChanged(duration, maybeMore);
+}
+
 void ArchiveController::fileDoubleClicked(const QModelIndex &idx){
     if(!idx.isValid()){
         return;