Reduce UI flicker.

lib/Slic3r/GUI/Tab.pm

@@ -257,7 +257,6 @@ sub select_preset {
     # Save the current application settings with the newly selected preset name.
     wxTheApp->save_settings;
     print "select_preset 5\n";
-
 }
 
 # Initialize the UI from the current preset.
@@ -313,17 +312,17 @@ sub add_options_page {
 # Reload current $self->{config} (aka $self->{presets}->edited_preset->config) into the UI fields.
 sub _reload_config {
     my ($self) = @_;
+    $self->Freeze;
     $_->reload_config for @{$self->{pages}};
+    $self->Thaw;
 }
 
 # Regerenerate content of the page tree.
 sub rebuild_page_tree {
     my ($self) = @_;
-    
+    $self->Freeze;
-    print "Tab::rebuild_page_tree " . $self->title . "\n";
     # get label of the currently selected item
     my $selected = $self->{treectrl}->GetItemText($self->{treectrl}->GetSelection);    
-    
     my $rootItem = $self->{treectrl}->GetRootItem;
     $self->{treectrl}->DeleteChildren($rootItem);
     my $have_selection = 0;
@@ -336,11 +335,11 @@ sub rebuild_page_tree {
             $have_selection = 1;
         }
     }
-    
     if (!$have_selection) {
         # this is triggered on first load, so we don't disable the sel change event
         $self->{treectrl}->SelectItem($self->{treectrl}->GetFirstChild($rootItem));
     }
+    $self->Thaw;
 }
 
 # Update the combo box label of the selected preset based on its "dirty" state,
@@ -674,6 +673,7 @@ sub _reload_config {
 # Slic3r::GUI::Tab::Print::_update is called after a configuration preset is loaded or switched, or when a single option is modifed by the user.
 sub _update {
     my ($self) = @_;
+    $self->Freeze;
 
     my $config = $self->{presets}->get_edited_preset->config_ref;
     
@@ -867,6 +867,8 @@ sub _update {
     my $have_wipe_tower = $config->wipe_tower;
     $self->get_field($_)->toggle($have_wipe_tower)
         for qw(wipe_tower_x wipe_tower_y wipe_tower_width wipe_tower_per_color_wipe);
+
+    $self->Thaw;
 }
 
 package Slic3r::GUI::Tab::Filament;
@@ -1432,6 +1434,7 @@ sub _build_extruder_pages {
 # Slic3r::GUI::Tab::Printer::_update is called after a configuration preset is loaded or switched, or when a single option is modifed by the user.
 sub _update {
     my ($self) = @_;
+    $self->Freeze;
 
     my $config = $self->{config};
     
@@ -1504,6 +1507,8 @@ sub _update {
         $self->get_field('retract_restart_extra_toolchange', $i)->toggle
             ($have_multiple_extruders && $toolchange_retraction);
     }
+
+    $self->Thaw;
 }
 
 # this gets executed after preset is loaded and before GUI fields are updated

xs/src/slic3r/GUI/Preset.cpp

@@ -14,6 +14,7 @@
 #include <wx/image.h>
 #include <wx/choice.h>
 #include <wx/bmpcbox.h>
+#include <wx/wupdlock.h>
 
 #include "../../libslic3r/Utils.hpp"
 
@@ -279,6 +280,7 @@ void PresetCollection::update_platter_ui(wxBitmapComboBox *ui)
     if (ui == nullptr)
         return;
     // Otherwise fill in the list from scratch.
+    ui->Freeze();
     ui->Clear();
     for (size_t i = this->m_presets.front().is_visible ? 0 : 1; i < this->m_presets.size(); ++ i) {
         const Preset &preset = this->m_presets[i];
@@ -287,12 +289,14 @@ void PresetCollection::update_platter_ui(wxBitmapComboBox *ui)
 		if (i == m_idx_selected)
             ui->SetSelection(ui->GetCount() - 1);
     }
+    ui->Thaw();
 }
 
 void PresetCollection::update_tab_ui(wxChoice *ui)
 {
     if (ui == nullptr)
         return;
+    ui->Freeze();
     ui->Clear();
     for (size_t i = this->m_presets.front().is_visible ? 0 : 1; i < this->m_presets.size(); ++ i) {
         const Preset &preset = this->m_presets[i];
@@ -301,6 +305,7 @@ void PresetCollection::update_tab_ui(wxChoice *ui)
 		if (i == m_idx_selected)
             ui->SetSelection(ui->GetCount() - 1);
     }
+    ui->Thaw();
 }
 
 // Update a dirty floag of the current preset, update the labels of the UI component accordingly.
@@ -326,6 +331,7 @@ bool PresetCollection::update_dirty_ui(wxItemContainer *ui)
 
 bool PresetCollection::update_dirty_ui(wxChoice *ui)
 { 
+    wxWindowUpdateLocker noUpdates(ui);
     return update_dirty_ui(dynamic_cast<wxItemContainer*>(ui));
 }
 
@@ -762,6 +768,7 @@ void PresetBundle::update_platter_filament_ui(unsigned int idx_extruder, wxBitma
         extruder_color.clear();
 
     // Fill in the list from scratch.
+    ui->Freeze();
     ui->Clear();
     for (size_t i = this->filaments().front().is_visible ? 0 : 1; i < this->filaments().size(); ++ i) {
         const Preset &preset = this->filaments.preset(i);
@@ -803,6 +810,7 @@ void PresetBundle::update_platter_filament_ui(unsigned int idx_extruder, wxBitma
         if (selected)
             ui->SetSelection(ui->GetCount() - 1);
     }
+    ui->Thaw();
 }
 
 // Update the colors preview at the platter extruder combo box.
@@ -817,6 +825,7 @@ void PresetBundle::update_platter_filament_ui_colors(unsigned int idx_extruder,
         // Extruder color is not defined.
         extruder_color.clear();
 
+    ui->Freeze();
     for (unsigned int ui_id = 0; ui_id < ui->GetCount(); ++ ui_id) {
         std::string   preset_name        = ui->GetString(ui_id).utf8_str().data();
         size_t        filament_preset_id = size_t(ui->GetClientData(ui_id));
@@ -854,6 +863,7 @@ void PresetBundle::update_platter_filament_ui_colors(unsigned int idx_extruder,
         }
         ui->SetItemBitmap(ui_id, *bitmap);
     }
+    ui->Thaw();
 }
 
 const std::vector<std::string>& PresetBundle::print_options()