[Kdenlive-svn] [kdenlive/refactoring] src/core/project: Resize background track when necessary.

[Till T. <ro...@tt...>]

Git commit d27040769003fecf8a9605040596bb003128e9b5 by Till Theato.
Committed on 26/06/2012 at 16:32.
Pushed by theato into branch 'refactoring'.

Resize background track when necessary.

M  +1    -0    src/core/project/CMakeLists.txt
M  +7    -1    src/core/project/timeline.cpp
A  +51   -0    src/core/project/timelinebackground.cpp     [License: GPL]
A  +41   -0    src/core/project/timelinebackground.h     [License: GPL]

http://commits.kde.org/kdenlive/d27040769003fecf8a9605040596bb003128e9b5

diff --git a/src/core/project/CMakeLists.txt b/src/core/project/CMakeLists.txt
index dc50508..9eeb37a 100644
--- a/src/core/project/CMakeLists.txt
+++ b/src/core/project/CMakeLists.txt
@@ -13,6 +13,7 @@ set(project_SRCS
   project/projectfolder.cpp
   project/projectmanager.cpp
   project/timeline.cpp
+  project/timelinebackground.cpp
   project/timelinetrack.cpp
 
   ${commands_SRCS}
diff --git a/src/core/project/timeline.cpp b/src/core/project/timeline.cpp
index 82955a1..ab06e12 100644
--- a/src/core/project/timeline.cpp
+++ b/src/core/project/timeline.cpp
@@ -12,6 +12,7 @@ the Free Software Foundation, either version 3 of the License, or
 #include "project.h"
 #include "producerwrapper.h"
 #include "timelinetrack.h"
+#include "timelinebackground.h"
 #include "monitor/monitormodel.h"
 #include "kdenlivesettings.h"
 #include <mlt++/Mlt.h>
@@ -104,7 +105,12 @@ void Timeline::loadTracks()
     Q_ASSERT(m_tracks.count() == 0);
 
     Mlt::Multitrack *multitrack = m_tractor->multitrack();
-    for (int i = multitrack->count() - 1; i > 0; --i) {
+    int min = 0;
+    if (multitrack->track(0)->get("id") == QString("black_track")) {
+        new TimelineBackground(new ProducerWrapper(multitrack->track(0)), this);
+        ++min;
+    }
+    for (int i = multitrack->count() - 1; i >= min; --i) {
         TimelineTrack *track = new TimelineTrack(new ProducerWrapper(multitrack->track(i)), this);
         if (track) {
             m_tracks.append(track);
diff --git a/src/core/project/timelinebackground.cpp b/src/core/project/timelinebackground.cpp
new file mode 100644
index 0000000..d883ecf
--- /dev/null
+++ b/src/core/project/timelinebackground.cpp
@@ -0,0 +1,51 @@
+/*
+Copyright (C) 2012  Till Theato <ro...@tt...>
+This file is part of Kdenlive. See www.kdenlive.org.
+
+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 3 of the License, or
+(at your option) any later version.
+*/
+
+#include "timelinebackground.h"
+#include "timeline.h"
+#include "producerwrapper.h"
+
+
+TimelineBackground::TimelineBackground(ProducerWrapper* track, Timeline* parent) :
+    QObject(parent),
+    m_parent(parent),
+    m_playlist(new Mlt::Playlist((mlt_playlist)track->get_service()))
+{
+    connect(parent, SIGNAL(durationChanged(int)), this, SLOT(onTimelineDurationChange()));
+}
+
+TimelineBackground::~TimelineBackground()
+{
+    delete m_playlist;
+}
+
+void TimelineBackground::onTimelineDurationChange()
+{
+    int duration = m_playlist->get_playtime();
+
+    m_parent->producer()->block();
+    m_playlist->set_in_and_out(0, 0);
+    int timelineDuration = m_parent->duration();
+    m_playlist->set_in_and_out(0, duration - 1);
+    m_parent->producer()->unblock();
+
+    if (timelineDuration == duration) {
+        return;
+    }
+
+    Mlt::Producer *clip = m_playlist->get_clip(0);
+    if (timelineDuration > clip->get_length()) {
+        clip->parent().set("length", timelineDuration);
+        clip->parent().set("out", timelineDuration - 1);
+        clip->set("length", timelineDuration);
+    }
+    m_playlist->resize_clip(0, 0, timelineDuration - 1);
+    delete clip;
+}
diff --git a/src/core/project/timelinebackground.h b/src/core/project/timelinebackground.h
new file mode 100644
index 0000000..56da0b5
--- /dev/null
+++ b/src/core/project/timelinebackground.h
@@ -0,0 +1,41 @@
+/*
+Copyright (C) 2012  Till Theato <ro...@tt...>
+This file is part of Kdenlive. See www.kdenlive.org.
+
+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 3 of the License, or
+(at your option) any later version.
+*/
+
+#ifndef TIMELINEBACKGROUND_H
+#define TIMELINEBACKGROUND_H
+
+#include <QObject>
+
+class Timeline;
+class ProducerWrapper;
+
+namespace Mlt
+{
+    class Playlist;
+}
+
+
+class TimelineBackground : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit TimelineBackground(ProducerWrapper *track, Timeline *parent);
+    virtual ~TimelineBackground();
+
+private slots:
+    void onTimelineDurationChange();
+
+private:
+    Timeline *m_parent;
+    Mlt::Playlist *m_playlist;
+};
+
+#endif