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, 59 insertions, 0 deletions

diff --git a/delegates.h b/delegates.h
new file mode 100644
index 0000000..86ee94e
--- /dev/null
+++ b/delegates.h
@@ -0,0 +1,59 @@
+/*
+  This program is free software; you can redistribute it and/or
+  modify it under the terms of the GNU General Public License
+  as published by the Free Software Foundation; either version
+  2 of the License, or (at your option) any later version.
+*/
+
+#ifndef DELEGATES_H
+#define DELEGATES_H
+
+#include <QString>
+#include <QWidget>
+#include <QStyleOptionViewItem>
+#include <QStyledItemDelegate>
+
+class FileNoDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit FileNoDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+        virtual QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const;
+};
+
+class DvdNoDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit DvdNoDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+};
+
+class SizeDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit SizeDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+};
+
+class DurationDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit DurationDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+};
+
+class BitrateDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit BitrateDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+};
+
+class EmptyDelegate : public QStyledItemDelegate {
+    Q_OBJECT
+    public:
+        explicit EmptyDelegate(QObject *parent = 0) : QStyledItemDelegate(parent) {}
+        virtual QString displayText(const QVariant &value, const QLocale &locale) const;
+};
+
+#endif // DELEGATES_H