Removed old sliders from 3DPreview

xs/src/slic3r/GUI/GUI_ObjectParts.cpp

@@ -1679,6 +1679,7 @@ void create_double_slider(wxWindow* parent, wxBoxSizer* sizer, wxGLCanvas* canva
     sizer->Add(m_slider, 0, wxEXPAND, 0);
 
     m_preview_canvas = canvas;
+    m_preview_canvas->Bind(wxEVT_KEY_DOWN, update_double_slider_from_canvas);
 
     m_slider->Bind(wxEVT_SCROLL_CHANGED, [parent](wxEvent& event) {
         _3DScene::set_toolpaths_range(m_preview_canvas, m_slider->GetLowerValueD() - 1e-6, m_slider->GetHigherValueD() + 1e-6);
@@ -1710,7 +1711,9 @@ void set_double_slider_thumbs(  const bool force_sliders_full_range,
                                 const std::vector<double> &layers_z, 
                                 const double z_low, const double z_high)
 {
-    if (force_sliders_full_range) {
+    // Force slider full range only when slider is created.
+    // Support selected diapason on the all next steps
+    if (/*force_sliders_full_range*/z_high == 0.0) { 
         m_slider->SetLowerValue(0);
         m_slider->SetHigherValue(layers_z.size() - 1);
         return;
@@ -1748,5 +1751,25 @@ void reset_double_slider()
     m_slider->SetLowerValue(0);
 }
 
+void update_double_slider_from_canvas(wxKeyEvent& event)
+{
+    if (event.HasModifiers()) {
+        event.Skip();
+        return;
+    }
+
+    const auto key = event.GetKeyCode();
+
+    if (key == 'U' || key == 'D') {
+        const int new_pos = key == 'U' ? m_slider->GetHigherValue() + 1 : m_slider->GetHigherValue() - 1;
+        m_slider->SetHigherValue(new_pos);
+        if (event.ShiftDown()) m_slider->SetLowerValue(m_slider->GetHigherValue());
+    }
+    else if (key == 'S')
+        m_slider->ChangeOneLayerLock();
+    else
+        event.Skip();
+}
+
 } //namespace GUI
 } //namespace Slic3r 

xs/src/slic3r/GUI/GUI_ObjectParts.hpp

@@ -126,6 +126,8 @@ void update_objects_list_extruder_column(int extruders_count);
 void create_double_slider(wxWindow* parent, wxBoxSizer* sizer, wxGLCanvas* canvas);
 void update_double_slider(bool force_sliders_full_range);
 void reset_double_slider();
+// update DoubleSlider after keyDown in canvas
+void update_double_slider_from_canvas(wxKeyEvent& event);
 
 } //namespace GUI
 } //namespace Slic3r 

xs/src/slic3r/GUI/wxExtensions.cpp

@@ -829,7 +829,9 @@ wxSize PrusaDoubleSlider::DoGetBestSize() const
 
 void PrusaDoubleSlider::SetLowerValue(const int lower_val)
 {
+    m_selection = ssLower;
     m_lower_value = lower_val;
+    correct_lower_value();
     Refresh();
     Update();
 
@@ -840,7 +842,9 @@ void PrusaDoubleSlider::SetLowerValue(const int lower_val)
 
 void PrusaDoubleSlider::SetHigherValue(const int higher_val)
 {
+    m_selection = ssHigher;
     m_higher_value = higher_val;
+    correct_higher_value();
     Refresh();
     Update();
 
@@ -1193,6 +1197,20 @@ bool PrusaDoubleSlider::is_point_in_rect(const wxPoint& pt, const wxRect& rect)
     return false;
 }
 
+void PrusaDoubleSlider::ChangeOneLayerLock()
+{
+    m_is_one_layer = !m_is_one_layer;
+    m_selection == ssLower ? correct_lower_value() : correct_higher_value();
+    if (!m_selection) m_selection = ssHigher;
+
+    Refresh();
+    Update();
+
+    wxCommandEvent e(wxEVT_SCROLL_CHANGED);
+    e.SetEventObject(this);
+    ProcessWindowEvent(e);
+}
+
 void PrusaDoubleSlider::OnLeftDown(wxMouseEvent& event)
 {
     this->CaptureMouse();

xs/src/slic3r/GUI/wxExtensions.hpp

@@ -540,6 +540,7 @@ public:
     void SetSliderValues(const std::vector<std::pair<int, double>>& values) {
         m_values = values;
     }
+    void ChangeOneLayerLock();
 
     void OnPaint(wxPaintEvent& ){ render();}
     void OnLeftDown(wxMouseEvent& event);