Modified logic to add snapshots to undo/redo stack using GLCanvas::do_xxxxxx() methods

src/slic3r/GUI/GLCanvas3D.cpp

@@ -1799,7 +1799,7 @@ std::vector<int> GLCanvas3D::load_object(const Model& model, int obj_idx)
 void GLCanvas3D::mirror_selection(Axis axis)
 {
     m_selection.mirror(axis);
-    do_mirror();
+    do_mirror("Mirror Object");
     wxGetApp().obj_manipul()->set_dirty();
 }
 
@@ -2947,8 +2947,7 @@ void GLCanvas3D::on_mouse(wxMouseEvent& evt)
         else if ((m_mouse.drag.move_volume_idx != -1) && m_mouse.dragging)
         {
             m_regenerate_volumes = false;
-            wxGetApp().plater()->take_snapshot(_(L("Move Object")));
+            do_move("Move Object");
-            do_move();
             wxGetApp().obj_manipul()->set_dirty();
             // Let the plater know that the dragging finished, so a delayed refresh
             // of the scene with the background processing data should be performed.
@@ -3107,11 +3106,14 @@ void GLCanvas3D::set_tooltip(const std::string& tooltip) const
 }
 
 
-void GLCanvas3D::do_move()
+void GLCanvas3D::do_move(const std::string& snapshot_type)
 {
     if (m_model == nullptr)
         return;
 
+    if (!snapshot_type.empty())
+        wxGetApp().plater()->take_snapshot(_(L(snapshot_type)));
+
     std::set<std::pair<int, int>> done;  // keeps track of modified instances
     bool object_moved = false;
     Vec3d wipe_tower_origin = Vec3d::Zero();
@@ -3162,13 +3164,18 @@ void GLCanvas3D::do_move()
 
     if (wipe_tower_origin != Vec3d::Zero())
         post_event(Vec3dEvent(EVT_GLCANVAS_WIPETOWER_MOVED, std::move(wipe_tower_origin)));
+
+    m_dirty = true;
 }
 
-void GLCanvas3D::do_rotate()
+void GLCanvas3D::do_rotate(const std::string& snapshot_type)
 {
     if (m_model == nullptr)
         return;
 
+    if (!snapshot_type.empty())
+        wxGetApp().plater()->take_snapshot(_(L(snapshot_type)));
+
     std::set<std::pair<int, int>> done;  // keeps track of modified instances
 
     Selection::EMode selection_mode = m_selection.get_mode();
@@ -3217,13 +3224,18 @@ void GLCanvas3D::do_rotate()
 
     if (!done.empty())
         post_event(SimpleEvent(EVT_GLCANVAS_INSTANCE_ROTATED));
+
+    m_dirty = true;
 }
 
-void GLCanvas3D::do_scale()
+void GLCanvas3D::do_scale(const std::string& snapshot_type)
 {
     if (m_model == nullptr)
         return;
 
+    if (!snapshot_type.empty())
+        wxGetApp().plater()->take_snapshot(_(L(snapshot_type)));
+
     std::set<std::pair<int, int>> done;  // keeps track of modified instances
 
     Selection::EMode selection_mode = m_selection.get_mode();
@@ -3269,18 +3281,27 @@ void GLCanvas3D::do_scale()
 
     if (!done.empty())
         post_event(SimpleEvent(EVT_GLCANVAS_INSTANCE_ROTATED));
+
+    m_dirty = true;
 }
 
-void GLCanvas3D::do_flatten()
+void GLCanvas3D::do_flatten(const Vec3d& normal, const std::string& snapshot_type)
 {
-    do_rotate();
+    if (!snapshot_type.empty())
+        wxGetApp().plater()->take_snapshot(_(L(snapshot_type)));
+
+    m_selection.flattening_rotate(normal);
+    do_rotate(""); // avoid taking another snapshot
 }
 
-void GLCanvas3D::do_mirror()
+void GLCanvas3D::do_mirror(const std::string& snapshot_type)
 {
     if (m_model == nullptr)
         return;
 
+    if (!snapshot_type.empty())
+        wxGetApp().plater()->take_snapshot(_(L(snapshot_type)));
+
     std::set<std::pair<int, int>> done;  // keeps track of modified instances
 
     Selection::EMode selection_mode = m_selection.get_mode();
@@ -3319,6 +3340,8 @@ void GLCanvas3D::do_mirror()
     }
 
     post_event(SimpleEvent(EVT_GLCANVAS_SCHEDULE_BACKGROUND_PROCESS));
+
+    m_dirty = true;
 }
 
 void GLCanvas3D::set_camera_zoom(double zoom)

src/slic3r/GUI/GLCanvas3D.hpp

@@ -599,11 +599,12 @@ public:
 
     void set_tooltip(const std::string& tooltip) const;
 
-    void do_move();
+    // the following methods add a snapshot to the undo/redo stack, unless the given string is empty
-    void do_rotate();
+    void do_move(const std::string& snapshot_type);
-    void do_scale();
+    void do_rotate(const std::string& snapshot_type);
-    void do_flatten();
+    void do_scale(const std::string& snapshot_type);
-    void do_mirror();
+    void do_flatten(const Vec3d& normal, const std::string& snapshot_type);
+    void do_mirror(const std::string& snapshot_type);
 
     void set_camera_zoom(double zoom);
 

src/slic3r/GUI/GUI_ObjectManipulation.cpp

@@ -220,8 +220,7 @@ ObjectManipulation::ObjectManipulation(wxWindow* parent) :
                 selection.synchronize_unselected_instances(Selection::SYNC_ROTATION_GENERAL);
                 selection.synchronize_unselected_volumes();
                 // Copy mirroring values from GLVolumes into Model (ModelInstance / ModelVolume), trigger background processing.
-                canvas->do_mirror();
+                canvas->do_mirror("Set Mirror");
-                canvas->set_as_dirty();
                 UpdateAndShow(true);
             });
         return sizer;
@@ -302,8 +301,7 @@ ObjectManipulation::ObjectManipulation(wxWindow* parent) :
                     selection.synchronize_unselected_instances(Selection::SYNC_ROTATION_GENERAL);
                     selection.synchronize_unselected_volumes();
                     // Copy rotation values from GLVolumes into Model (ModelInstance / ModelVolume), trigger background processing.
-				    wxGetApp().plater()->take_snapshot(_(L("Set Rotation")));
+                    canvas->do_rotate("Set Rotation");
-                    canvas->do_rotate();
 
                     UpdateAndShow(true);
                 });
@@ -656,8 +654,7 @@ void ObjectManipulation::change_position_value(int axis, double value)
     Selection& selection = canvas->get_selection();
     selection.start_dragging();
     selection.translate(position - m_cache.position, selection.requires_local_axes());
-    wxGetApp().plater()->take_snapshot(_(L("Set Position")));
+    canvas->do_move("Set Position");
-    canvas->do_move();
 
     m_cache.position = position;
 	m_cache.position_rounded(axis) = DBL_MAX;
@@ -688,8 +685,7 @@ void ObjectManipulation::change_rotation_value(int axis, double value)
 	selection.rotate(
 		(M_PI / 180.0) * (transformation_type.absolute() ? rotation : rotation - m_cache.rotation), 
 		transformation_type);
-    wxGetApp().plater()->take_snapshot(_(L("Set Orientation")));
+    canvas->do_rotate("Set Orientation");
-    canvas->do_rotate();
 
     m_cache.rotation = rotation;
 	m_cache.rotation_rounded(axis) = DBL_MAX;
@@ -754,7 +750,7 @@ void ObjectManipulation::do_scale(int axis, const Vec3d &scale) const
 
     selection.start_dragging();
     selection.scale(scaling_factor * 0.01, transformation_type);
-    wxGetApp().plater()->canvas3D()->do_scale();
+    wxGetApp().plater()->canvas3D()->do_scale("Set Scale");
 }
 
 void ObjectManipulation::on_change(t_config_option_key opt_key, const boost::any& value)

src/slic3r/GUI/Gizmos/GLGizmosManager.cpp

@@ -600,9 +600,7 @@ bool GLGizmosManager::on_mouse(wxMouseEvent& evt, GLCanvas3D& canvas)
                 if (m_current == Flatten)
                 {
                     // Rotate the object so the normal points downward:
-				    wxGetApp().plater()->take_snapshot(_(L("Place on Face")));
+                    canvas.do_flatten(get_flattening_normal(), "Place on Face");
-                    selection.flattening_rotate(get_flattening_normal());
-                    canvas.do_flatten();
                     wxGetApp().obj_manipul()->set_dirty();
                 }
 
@@ -674,20 +672,18 @@ bool GLGizmosManager::on_mouse(wxMouseEvent& evt, GLCanvas3D& canvas)
             {
             case Move:
             {
-			    wxGetApp().plater()->take_snapshot(_(L("Move Object")));
                 canvas.disable_regenerate_volumes();
-                canvas.do_move();
+                canvas.do_move("Gizmo-Move Object");
                 break;
             }
             case Scale:
             {
-                canvas.do_scale();
+                canvas.do_scale("Gizmo-Scale Object");
                 break;
             }
             case Rotate:
             {
-			    wxGetApp().plater()->take_snapshot(_(L("Rotate Object")));
+                canvas.do_rotate("Gizmo-Rotate Object");
-                canvas.do_rotate();
                 break;
             }
             default:

src/slic3r/GUI/Selection.cpp

@@ -806,7 +806,7 @@ void Selection::scale_to_fit_print_volume(const DynamicPrintConfig& config)
             double s = std::min(sx, std::min(sy, sz));
             if (s != 1.0)
             {
-			    wxGetApp().plater()->take_snapshot(_(L("Scale To Fit")));
+                wxGetApp().plater()->take_snapshot(_(L("Scale To Fit")));
 
                 TransformationType type;
                 type.set_world();
@@ -816,12 +816,12 @@ void Selection::scale_to_fit_print_volume(const DynamicPrintConfig& config)
                 // apply scale
                 start_dragging();
                 scale(s * Vec3d::Ones(), type);
-                wxGetApp().plater()->canvas3D()->do_scale();
+                wxGetApp().plater()->canvas3D()->do_scale(""); // avoid storing another snapshot
 
                 // center selection on print bed
                 start_dragging();
                 translate(print_volume.center() - get_bounding_box().center());
-                wxGetApp().plater()->canvas3D()->do_move();
+                wxGetApp().plater()->canvas3D()->do_move(""); // avoid storing another snapshot
 
                 wxGetApp().obj_manipul()->set_dirty();
             }