ENH:upgrade tips for gizmo tool

Jira: STUDIO-6167
Change-Id: I3890bff060c1a507ea3a3831930d24301ab19dc6

src/slic3r/GUI/GLCanvas3D.cpp

@@ -6234,6 +6234,8 @@ bool GLCanvas3D::_init_main_toolbar()
     item.name = "splitobjects";
     item.icon_filename = m_is_dark ? "split_objects_dark.svg" : "split_objects.svg";
     item.tooltip = _utf8(L("Split to objects"));
+    item.additional_tooltip = _u8L("Please select single object\n.") +
+        _u8L("And it is valid when there are at least two parts in object or stl has at least two meshes.");
     item.sprite_id++;
     item.left.render_callback = nullptr;
     item.left.action_callback = [this]() {
@@ -6252,6 +6254,8 @@ bool GLCanvas3D::_init_main_toolbar()
     item.name = "splitvolumes";
     item.icon_filename = m_is_dark ? "split_parts_dark.svg" : "split_parts.svg";
     item.tooltip = _utf8(L("Split to parts"));
+    item.additional_tooltip = _u8L("Please select single object\n.") +
+        _u8L("And it is valid when importing an stl with at least two meshes.");
     item.sprite_id++;
     item.left.action_callback = [this]() {
         if (m_canvas != nullptr) {
@@ -6268,6 +6272,7 @@ bool GLCanvas3D::_init_main_toolbar()
     item.name = "layersediting";
     item.icon_filename = m_is_dark ? "toolbar_variable_layer_height_dark.svg" : "toolbar_variable_layer_height.svg";
     item.tooltip = _utf8(L("Variable layer height"));
+    item.additional_tooltip = _u8L("Please select single object.");
     item.sprite_id++;
     item.left.action_callback = [this]() {
         if (m_canvas != nullptr) {

src/slic3r/GUI/GLToolbar.cpp

@@ -528,11 +528,11 @@ std::string GLToolbar::get_tooltip() const
         if (item->is_hovered())
         {
             tooltip = item->get_tooltip();
-            if (!item->is_pressed())
+            if (!item->is_enabled())
             {
                 const std::string& additional_tooltip = item->get_additional_tooltip();
                 if (!additional_tooltip.empty())
-                    tooltip += "\n" + additional_tooltip;
+                    tooltip += ":\n" + additional_tooltip;
 
                 break;
             }

src/slic3r/GUI/Gizmos/GLGizmoAdvancedCut.cpp

@@ -445,7 +445,11 @@ bool GLGizmoAdvancedCut::on_init()
 
 std::string GLGizmoAdvancedCut::on_get_name() const
 {
-    return (_(L("Cut"))).ToUTF8().data();
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Cut") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Cut");
+    }
 }
 
 void GLGizmoAdvancedCut::on_load(cereal::BinaryInputArchive &ar)

src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp

@@ -72,7 +72,11 @@ void GLGizmoFdmSupports::on_opening()
 
 std::string GLGizmoFdmSupports::on_get_name() const
 {
-    return _u8L("Supports Painting");
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Supports Painting") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Supports Painting");
+    }
 }
 
 bool GLGizmoFdmSupports::on_init()

src/slic3r/GUI/Gizmos/GLGizmoFlatten.cpp

@@ -39,7 +39,11 @@ CommonGizmosDataID GLGizmoFlatten::on_get_requirements() const
 
 std::string GLGizmoFlatten::on_get_name() const
 {
-    return _u8L("Lay on face");
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Lay on face") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Lay on face");
+    }
 }
 
 bool GLGizmoFlatten::on_is_activable() const

src/slic3r/GUI/Gizmos/GLGizmoMeshBoolean.cpp

@@ -93,6 +93,13 @@ bool GLGizmoMeshBoolean::on_init()
 
 std::string GLGizmoMeshBoolean::on_get_name() const
 {
+    if (!on_is_activable() && m_state == EState::Off) {
+        if (!m_parent.get_selection().is_single_full_instance()) {
+            return _u8L("Mesh Boolean") + _u8L(":\n") + _u8L("Please right click to assembly these objects.");
+        } else if (m_parent.get_selection().get_volume_idxs().size() <= 1){
+            return _u8L("Mesh Boolean") + _u8L(":\n") + _u8L("Please add at least one more object and select them together,\nthen right click to assembly these objects.");
+        }
+    }
     return _u8L("Mesh Boolean");
 }
 

src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp

@@ -43,7 +43,11 @@ void GLGizmoMmuSegmentation::on_shutdown()
 
 std::string GLGizmoMmuSegmentation::on_get_name() const
 {
-    return _u8L("Color Painting");
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Color Painting") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Color Painting");
+    }
 }
 
 bool GLGizmoMmuSegmentation::on_is_selectable() const

src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp

@@ -57,7 +57,11 @@ GLGizmoSeam::GLGizmoSeam(GLCanvas3D& parent, const std::string& icon_filename, u
 
 std::string GLGizmoSeam::on_get_name() const
 {
-    return _u8L("Seam painting");
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Seam painting") + _u8L(":\nPlease select single object.");
+    } else {
+        return _u8L("Seam painting");
+    }
 }
 
 

src/slic3r/GUI/Gizmos/GLGizmoSimplify.cpp

@@ -138,7 +138,11 @@ void GLGizmoSimplify::add_simplify_suggestion_notification(
 
 std::string GLGizmoSimplify::on_get_name() const
 {
-    return _u8L("Simplify");
+    if (!on_is_activable()) {
+        return _u8L("Simplify") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Simplify");
+    }
 }
 
 void GLGizmoSimplify::on_render_input_window(float x, float y, float bottom_limit)

src/slic3r/GUI/Gizmos/GLGizmoText.cpp

@@ -355,7 +355,11 @@ CommonGizmosDataID GLGizmoText::on_get_requirements() const
 
 std::string GLGizmoText::on_get_name() const
 {
-    return _u8L("Text shape");
+    if (!on_is_activable() && m_state == EState::Off) {
+        return _u8L("Text shape") + _u8L(":\n") + _u8L("Please select single object.");
+    } else {
+        return _u8L("Text shape");
+    }
 }
 
 bool GLGizmoText::on_is_activable() const