Continues migration with DDS, Common

Lts/Common/LtsScriptTimeline/track_resize_handler.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include <LtsScriptTimeline/ltsscripttimeline_export.h>
+#include <LtsScriptTimeline/track_content_widget.h>
+#include <QCursor>
+
+class QMouseEvent;
+class QKeyEvent;
+
+namespace LtsScriptTimeline
+{
+class LTSSCRIPTTIMELINE_EXPORT ResizeHandler
+{
+public:
+  explicit ResizeHandler(TrackContentWidget *_tcw)
+    : m_trackContentWidget(_tcw)
+    , m_resizing(false)
+    , m_possible(false)
+    , m_oldLength(-1)
+    , m_mainTeLength(-1)
+  {}
+
+  void mousePressEvent(QMouseEvent *event);
+  void mouseReleaseEvent(QMouseEvent *event);
+  bool mouseMoveEvent(QMouseEvent *event);
+  void keyPressEvent(QKeyEvent *event);
+
+  TrackContentWidget *m_trackContentWidget;
+  QVector<TrackContentWidget *> m_tcwCorresponding;
+
+  bool m_resizing;
+  bool m_possible;
+  int m_oldLength;
+  int m_mainTeLength;
+  Qt::CursorShape m_cursor;
+
+private:
+  bool isCollision(int newLength) const;
+};
+}