From eb0a56909e331352caf4838277ff93c6496fe034 Mon Sep 17 00:00:00 2001
From: jabarrera <jabarrera@users.noreply.github.com>
Date: Feb 01 2017 03:56:14 +0000
Subject: Set auto markers (#982)


close #572 
---

diff --git a/toonz/sources/toonz/xshrowviewer.cpp b/toonz/sources/toonz/xshrowviewer.cpp
index 3e89693..820bec5 100644
--- a/toonz/sources/toonz/xshrowviewer.cpp
+++ b/toonz/sources/toonz/xshrowviewer.cpp
@@ -688,6 +688,11 @@ void RowArea::contextMenuEvent(QContextMenuEvent *event) {
   connect(setStartMarker, SIGNAL(triggered()), SLOT(onSetStartMarker()));
   QAction *setStopMarker = menu->addAction(tr("Set Stop Marker"));
   connect(setStopMarker, SIGNAL(triggered()), SLOT(onSetStopMarker()));
+
+  QAction *setAutoMarkers = menu->addAction(tr("Set Auto Markers"));
+  connect(setAutoMarkers, SIGNAL(triggered()), SLOT(onSetAutoMarkers()));
+  setAutoMarkers->setEnabled(canSetAutoMarkers());
+
   QAction *removeMarkers = menu->addAction(tr("Remove Markers"));
   connect(removeMarkers, SIGNAL(triggered()), SLOT(onRemoveMarkers()));
 
@@ -719,6 +724,32 @@ void RowArea::contextMenuEvent(QContextMenuEvent *event) {
 }
 
 //-----------------------------------------------------------------------------
+// Checks if there is a cell non empty at current row and column to enable the
+// auto markers item-menu.
+bool RowArea::canSetAutoMarkers() {
+  TXshCell cell =
+      m_viewer->getXsheet()->getCell(m_row, m_viewer->getCurrentColumn());
+  return cell.isEmpty() ? false : true;
+}
+
+//-----------------------------------------------------------------------------
+int RowArea::getNonEmptyCell(int row, int column, Direction direction) {
+  int currentPos = row;
+  bool exit      = false;
+
+  while (!exit) {
+    TXshCell cell = m_viewer->getXsheet()->getCell(currentPos, column);
+    if (cell.isEmpty()) {
+      (direction == up) ? currentPos++ : currentPos--;
+      exit = true;
+    } else
+      (direction == up) ? currentPos-- : currentPos++;
+  }
+
+  return currentPos;
+}
+
+//-----------------------------------------------------------------------------
 
 void RowArea::mouseDoubleClickEvent(QMouseEvent *event) {
   int currentFrame = TApp::instance()->getCurrentFrame()->getFrame();
@@ -796,6 +827,20 @@ void RowArea::onPreviewThis() {
   update();
 }
 
+// Set the playing markers to the continuous block of the cell pointed by
+// current row and column
+void RowArea::onSetAutoMarkers() {
+  int currentColumn = m_viewer->getCurrentColumn();
+
+  int top    = getNonEmptyCell(m_row, currentColumn, Direction::up);
+  int bottom = getNonEmptyCell(m_row, currentColumn, Direction::down);
+
+  int r0, r1, step;
+  getPlayRange(r0, r1, step);
+  setPlayRange(top, bottom, step);
+  update();
+}
+
 //-----------------------------------------------------------------------------
 
 void RowArea::onRemoveMarkers() {
diff --git a/toonz/sources/toonz/xshrowviewer.h b/toonz/sources/toonz/xshrowviewer.h
index a486a22..53e1bdf 100644
--- a/toonz/sources/toonz/xshrowviewer.h
+++ b/toonz/sources/toonz/xshrowviewer.h
@@ -30,6 +30,8 @@ class RowArea final : public QWidget {
     Mos
   } m_showOnionToSet;  // TODO:�����͂����Fos,Mos�ǂ�����n�C���C�g���Ă���̂����肳����I�I�I�I
 
+  enum Direction { up = 0, down };
+
   // Play ranges
   int m_r0;
   int m_r1;
@@ -51,6 +53,12 @@ class RowArea final : public QWidget {
   DragTool *getDragTool() const;
   void setDragTool(DragTool *dragTool);
 
+  // Return when the item-menu setAutoMarkers can be enabled.
+  bool canSetAutoMarkers();
+  // Return the number of the last non-empty cell finded. You can set the
+  // direction of the search.
+  int getNonEmptyCell(int row, int column, Direction);
+
 public:
 #if QT_VERSION >= 0x050500
   RowArea(XsheetViewer *parent, Qt::WindowFlags flags = 0);
@@ -77,6 +85,9 @@ protected slots:
   void onSetStopMarker();
   void onRemoveMarkers();
 
+  // Set start and end marker automatically respect the current row and column.
+  void onSetAutoMarkers();
+
   // set both the from and to markers at the specified row
   void onPreviewThis();
 };