Fix adjust to frame size option in transform/position & zoom compositions.

Related to #1193

src/assets/assetpanel.cpp

@@ -168,7 +168,8 @@ void AssetPanel::showTransition(int tid, const std::shared_ptr<AssetParameterMod
     m_transitionWidget->setVisible(true);
     m_timelineButton->setVisible(true);
     m_enableStackButton->setVisible(false);
-    m_transitionWidget->setModel(transitionModel, QSize(), true);
+    QSize s = pCore->getCompositionSizeOnTrack(id);
+    m_transitionWidget->setModel(transitionModel, s, true);
 }
 
 void AssetPanel::showMix(int cid, const std::shared_ptr<AssetParameterModel> &transitionModel)

src/core.cpp

@@ -469,6 +469,11 @@ void Core::refreshProjectRange(QPair<int, int> range)
     m_monitorManager->refreshProjectRange(range);
 }
 
+const QSize Core::getCompositionSizeOnTrack(const ObjectId &id)
+{
+    return m_mainWindow->getCurrentTimeline()->controller()->getModel()->getCompositionSizeOnTrack(id);
+}
+
 int Core::getItemPosition(const ObjectId &id)
 {
     if (!m_guiConstructed) return 0;

src/core.h

@@ -264,6 +264,8 @@ public:
     MixAlignment getMixAlign(int cid) const;
     /** @brief Closing current document, do some cleanup */
     void cleanup();
+    /** @brief Get the frame size of the clip above a composition */
+    const QSize getCompositionSizeOnTrack(const ObjectId &id);
 
 private:
     explicit Core();

src/timeline2/model/timelinemodel.cpp

@@ -5512,3 +5512,14 @@ QVariantList TimelineModel::getMasterEffectZones() const
     }
     return {};
 }
+
+const QSize TimelineModel::getCompositionSizeOnTrack(const ObjectId &id)
+{
+    int pos = getCompositionPosition(id.second);
+    int tid = getCompositionTrackId(id.second);
+    int cid = getTrackById_const(tid)->getClipByPosition(pos);
+    if (cid > -1) {
+        return getClipFrameSize(cid);
+    }
+    return QSize();
+}

src/timeline2/model/timelinemodel.hpp

@@ -746,6 +746,8 @@ public:
     void requestResizeMix(int cid, int duration, MixAlignment align);
     MixAlignment getMixAlign(int cid) const;
     std::shared_ptr<SubtitleModel> getSubtitleModel();
+    /** @brief Get the frame size of the clip above a composition */
+    const QSize getCompositionSizeOnTrack(const ObjectId &id);
 
 protected:
     /** @brief Register a new track. This is a call-back meant to be called from TrackModel