Whitespace changes to supress misleading indentation warnings

These appear in newer gcc when spaces and tabs are mixed

src/slic3r/GUI/BedShapeDialog.cpp

@@ -455,7 +455,7 @@ void BedShapePanel::update_shape()
     else if (page_idx == SHAPE_CUSTOM) 
         m_shape = m_loaded_shape;
 
-	update_preview();
+    update_preview();
 }
 
 // Loads an stl file, projects it to the XY plane and calculates a polygon.

src/slic3r/GUI/GLCanvas3D.cpp

@@ -928,8 +928,8 @@ bool GLCanvas3D::LegendTexture::generate(const GCodePreviewData& preview_data, c
     if (items_count > 1)
         m_original_height += (items_count - 1) * scaled_square_contour;
 
-	m_width = (int)next_highest_power_of_2((uint32_t)m_original_width);
-	m_height = (int)next_highest_power_of_2((uint32_t)m_original_height);
+    m_width = (int)next_highest_power_of_2((uint32_t)m_original_width);
+    m_height = (int)next_highest_power_of_2((uint32_t)m_original_height);
 
     // generates bitmap
     wxBitmap bitmap(m_width, m_height);
@@ -1882,7 +1882,7 @@ void GLCanvas3D::reload_scene(bool refresh_immediately, bool force_full_scene_re
     if (m_reload_delayed)
         return;
 
-	bool update_object_list = false;
+    bool update_object_list = false;
 
     if (m_volumes.volumes != glvolumes_new)
 		update_object_list = true;
@@ -5070,14 +5070,14 @@ void GLCanvas3D::_load_gcode_extrusion_paths(const GCodePreviewData& preview_dat
 		    for (const GCodePreviewData::Extrusion::Layer &layer : preview_data.extrusion.layers)
 		        for (const ExtrusionPath &path : layer.paths)
 		        	++ num_paths_per_role[size_t(path.role())];
-			std::vector<std::vector<float>> roles_values;
+            std::vector<std::vector<float>> roles_values;
 			roles_values.assign(size_t(erCount), std::vector<float>());
 		    for (size_t i = 0; i < roles_values.size(); ++ i)
 		    	roles_values[i].reserve(num_paths_per_role[i]);
-		    for (const GCodePreviewData::Extrusion::Layer& layer : preview_data.extrusion.layers)
+            for (const GCodePreviewData::Extrusion::Layer& layer : preview_data.extrusion.layers)
 		        for (const ExtrusionPath& path : layer.paths)
 		        	roles_values[size_t(path.role())].emplace_back(Helper::path_filter(preview_data.extrusion.view_type, path));
-			roles_filters.reserve(size_t(erCount));
+            roles_filters.reserve(size_t(erCount));
 			size_t num_buffers = 0;
 		    for (std::vector<float> &values : roles_values) {
 		    	sort_remove_duplicates(values);

src/slic3r/GUI/GUI.cpp

@@ -125,7 +125,7 @@ void config_wizard(int reason)
     if (! wxGetApp().check_unsaved_changes())
     	return;
 
-	try {
+    try {
 		ConfigWizard wizard(nullptr, static_cast<ConfigWizard::RunReason>(reason));
         wizard.run(wxGetApp().preset_bundle, wxGetApp().preset_updater);
 	}

src/slic3r/GUI/GUI_App.cpp

@@ -725,7 +725,7 @@ bool GUI_App::load_language(wxString language, bool initial)
 #endif
         if (initial)
         	message + "\n\nApplication will close.";
-		wxMessageBox(message, "PrusaSlicer - Switching language failed", wxOK | wxICON_ERROR);
+        wxMessageBox(message, "PrusaSlicer - Switching language failed", wxOK | wxICON_ERROR);
         if (initial)
 			std::exit(EXIT_FAILURE);
 		else

src/slic3r/GUI/LambdaObjectDialog.cpp

@@ -192,7 +192,7 @@ ConfigOptionsGroupShp LambdaObjectDialog::init_modificator_options_page(const wx
     else
         panel->SetSizer(optgroup->sizer);
 
-	return optgroup;
+    return optgroup;
 }
 
 

src/slic3r/GUI/MainFrame.cpp

@@ -917,7 +917,7 @@ void MainFrame::load_config_file()
 	wxString file;
     if (dlg.ShowModal() == wxID_OK)
         file = dlg.GetPath();
-	if (! file.IsEmpty() && this->load_config_file(file.ToUTF8().data())) {
+    if (! file.IsEmpty() && this->load_config_file(file.ToUTF8().data())) {
         wxGetApp().app_config->update_config_dir(get_dir_name(file));
         m_last_config = file;
     }

src/slic3r/GUI/OptionsGroup.cpp

@@ -133,7 +133,7 @@ void OptionsGroup::append_line(const Line& line, wxStaticText**	full_Label/* = n
         m_options_mode.push_back(option_set[0].opt.mode);
 
 	// if we have a single option with no label, no sidetext just add it directly to sizer
-	if (option_set.size() == 1 && label_width == 0 && option_set.front().opt.full_width &&
+    if (option_set.size() == 1 && label_width == 0 && option_set.front().opt.full_width &&
         option_set.front().opt.label.empty() &&
 		option_set.front().opt.sidetext.size() == 0 && option_set.front().side_widget == nullptr && 
 		line.get_extra_widgets().size() == 0) {

src/slic3r/GUI/PresetBundle.cpp

@@ -279,7 +279,7 @@ std::string PresetBundle::load_system_presets()
                 errors_cummulative += "\n";
             }
         }
-	if (first) {
+    if (first) {
 		// No config bundle loaded, reset.
 		this->reset(false);
 	}

src/slic3r/GUI/Selection.cpp

@@ -410,7 +410,7 @@ void Selection::set_deserialized(EMode mode, const std::vector<std::pair<size_t,
     if (! m_valid)
         return;
 
-	m_mode = mode;
+    m_mode = mode;
     for (unsigned int i : m_list)
         (*m_volumes)[i]->selected = false;
     m_list.clear();

src/slic3r/GUI/WipeTowerDialog.cpp

@@ -371,7 +371,7 @@ void WipingPanel::toggle_advanced(bool user_action) {
     else
         m_advanced = !advanced_matches_simple(); // if called from constructor, show what is appropriate
 
-	(m_advanced ? m_page_advanced : m_page_simple)->Show();
+    (m_advanced ? m_page_advanced : m_page_simple)->Show();
 	(!m_advanced ? m_page_advanced : m_page_simple)->Hide();
 
     m_widget_button->SetLabel(m_advanced ? _(L("Show simplified settings")) : _(L("Show advanced settings")));

src/slic3r/GUI/wxExtensions.cpp

@@ -669,7 +669,7 @@ wxDataViewItem ObjectDataViewModel::Add(const wxString &name,
     if (has_errors)
         root->m_bmp = *m_warning_bmp;
 
-	m_objects.push_back(root);
+    m_objects.push_back(root);
 	// notify control
 	wxDataViewItem child((void*)root);
 	wxDataViewItem parent((void*)NULL);
@@ -720,7 +720,7 @@ wxDataViewItem ObjectDataViewModel::AddVolumeChild( const wxDataViewItem &parent
         root->SetBitmap(*m_warning_bmp);
 
 	// notify control
-	const wxDataViewItem child((void*)node);
+    const wxDataViewItem child((void*)node);
     ItemAdded(parent_item, child);
     root->m_volumes_cnt++;