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Merge branch 'vb_project_state'

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This commit is contained in:
Lukas Matena 2021-09-30 12:18:14 +02:00
commit 8afaa004b7
18 changed files with 262 additions and 381 deletions
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3
src/libslic3r/AppConfig.cpp
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@ -147,6 +147,9 @@ void AppConfig::set_defaults()
if (get("order_volumes").empty())
set("order_volumes", "1");
if (get("clear_undo_redo_stack_on_new_project").empty())
set("clear_undo_redo_stack_on_new_project", "1");
}
else {
#ifdef _WIN32

1
src/slic3r/GUI/Gizmos/GLGizmoBase.hpp
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@ -136,6 +136,7 @@ public:
bool is_selectable() const { return on_is_selectable(); }
CommonGizmosDataID get_requirements() const { return on_get_requirements(); }
virtual bool wants_enter_leave_snapshots() const { return false; }
virtual std::string get_action_snapshot_name() { return _u8L("Gizmo action"); }
void set_common_data_pool(CommonGizmosDataPool* ptr) { m_c = ptr; }
unsigned int get_sprite_id() const { return m_sprite_id; }

4
src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.cpp
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@ -8,6 +8,7 @@
#include "slic3r/GUI/ImGuiWrapper.hpp"
#include "slic3r/GUI/Plater.hpp"
#include "slic3r/GUI/GUI_ObjectList.hpp"
#include "slic3r/Utils/UndoRedo.hpp"
#include <GL/glew.h>
@ -165,7 +166,8 @@ void GLGizmoFdmSupports::on_render_input_window(float x, float y, float bottom_l
ImGui::Separator();
if (m_imgui->button(m_desc.at("remove_all"))) {
Plater::TakeSnapshot snapshot(wxGetApp().plater(), wxString(_L("Reset selection")));
Plater::TakeSnapshot snapshot(wxGetApp().plater(), _L("Reset selection"),
UndoRedo::SnapshotType::GizmoAction);
ModelObject* mo = m_c->selection_info()->model_object();
int idx = -1;
for (ModelVolume* mv : mo->volumes) {

2
src/slic3r/GUI/Gizmos/GLGizmoFdmSupports.hpp
View file

@ -21,6 +21,8 @@ protected:
std::string get_gizmo_entering_text() const override { return _u8L("Entering Paint-on supports"); }
std::string get_gizmo_leaving_text() const override { return _u8L("Leaving Paint-on supports"); }
std::string get_action_snapshot_name() override { return _u8L("Paint-on supports editing"); }
private:
bool on_init() override;

4
src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.cpp
View file

@ -11,6 +11,7 @@
#include "slic3r/GUI/NotificationManager.hpp"
#include "libslic3r/PresetBundle.hpp"
#include "libslic3r/Model.hpp"
#include "slic3r/Utils/UndoRedo.hpp"
#include <GL/glew.h>
@ -503,7 +504,8 @@ void GLGizmoMmuSegmentation::on_render_input_window(float x, float y, float bott
ImGui::Separator();
if (m_imgui->button(m_desc.at("remove_all"))) {
Plater::TakeSnapshot snapshot(wxGetApp().plater(), wxString(_L("Reset selection")));
Plater::TakeSnapshot snapshot(wxGetApp().plater(), _L("Reset selection"),
UndoRedo::SnapshotType::GizmoAction);
ModelObject * mo = m_c->selection_info()->model_object();
int idx = -1;
for (ModelVolume *mv : mo->volumes)

1
src/slic3r/GUI/Gizmos/GLGizmoMmuSegmentation.hpp
View file

@ -130,6 +130,7 @@ protected:
std::string get_gizmo_entering_text() const override { return _u8L("Entering Multimaterial painting"); }
std::string get_gizmo_leaving_text() const override { return _u8L("Leaving Multimaterial painting"); }
std::string get_action_snapshot_name() override { return _u8L("Multimaterial painting editing"); }
size_t m_first_selected_extruder_idx = 0;
size_t m_second_selected_extruder_idx = 1;

2
src/slic3r/GUI/Gizmos/GLGizmoPainterBase.cpp
View file

@ -421,7 +421,7 @@ bool GLGizmoPainterBase::gizmo_event(SLAGizmoEventType action, const Vec2d& mous
&& m_button_down != Button::None) {
// Take snapshot and update ModelVolume data.
wxString action_name = this->handle_snapshot_action_name(shift_down, m_button_down);
Plater::TakeSnapshot snapshot(wxGetApp().plater(), action_name);
Plater::TakeSnapshot snapshot(wxGetApp().plater(), action_name, UndoRedo::SnapshotType::GizmoAction);
update_model_object();
m_button_down = Button::None;

4
src/slic3r/GUI/Gizmos/GLGizmoSeam.cpp
View file

@ -8,6 +8,7 @@
#include "slic3r/GUI/ImGuiWrapper.hpp"
#include "slic3r/GUI/Plater.hpp"
#include "slic3r/GUI/GUI_ObjectList.hpp"
#include "slic3r/Utils/UndoRedo.hpp"
#include <GL/glew.h>
@ -121,7 +122,8 @@ void GLGizmoSeam::on_render_input_window(float x, float y, float bottom_limit)
m_imgui->text("");
if (m_imgui->button(m_desc.at("remove_all"))) {
Plater::TakeSnapshot snapshot(wxGetApp().plater(), wxString(_L("Reset selection")));
Plater::TakeSnapshot snapshot(wxGetApp().plater(), _L("Reset selection"),
UndoRedo::SnapshotType::GizmoAction);
ModelObject* mo = m_c->selection_info()->model_object();
int idx = -1;
for (ModelVolume* mv : mo->volumes) {

1
src/slic3r/GUI/Gizmos/GLGizmoSeam.hpp
View file

@ -22,6 +22,7 @@ protected:
std::string get_gizmo_entering_text() const override { return _u8L("Entering Seam painting"); }
std::string get_gizmo_leaving_text() const override { return _u8L("Leaving Seam painting"); }
std::string get_action_snapshot_name() override { return _u8L("Paint-on seam editing"); }
private:
bool on_init() override;

6
src/slic3r/GUI/Gizmos/GLGizmosManager.cpp
View file

@ -1220,13 +1220,15 @@ bool GLGizmosManager::activate_gizmo(EType type)
if (! m_parent.get_gizmos_manager().is_serializing()
&& old_gizmo->wants_enter_leave_snapshots())
Plater::TakeSnapshot snapshot(wxGetApp().plater(),
Slic3r::format(_utf8("Leaving %1%"), old_gizmo->get_name(false)));
Slic3r::format(_utf8("Leaving %1%"), old_gizmo->get_name(false)),
UndoRedo::SnapshotType::LeavingGizmoWithAction);
}
if (new_gizmo && ! m_parent.get_gizmos_manager().is_serializing()
&& new_gizmo->wants_enter_leave_snapshots())
Plater::TakeSnapshot snapshot(wxGetApp().plater(),
Slic3r::format(_utf8("Entering %1%"), new_gizmo->get_name(false)));
Slic3r::format(_utf8("Entering %1%"), new_gizmo->get_name(false)),
UndoRedo::SnapshotType::EnteringGizmo);
m_current = type;

3
src/slic3r/GUI/MainFrame.cpp
View file

@ -620,7 +620,8 @@ void MainFrame::update_title()
// m_plater->get_project_filename() produces file name including path, but excluding extension.
// Don't try to remove the extension, it would remove part of the file name after the last dot!
wxString project = from_path(into_path(m_plater->get_project_filename()).filename());
wxString dirty_marker = (!m_plater->model().objects.empty() && m_plater->is_project_dirty()) ? "*" : "";
// wxString dirty_marker = (!m_plater->model().objects.empty() && m_plater->is_project_dirty()) ? "*" : "";
wxString dirty_marker = m_plater->is_project_dirty() ? "*" : "";
if (!dirty_marker.empty() || !project.empty()) {
if (!dirty_marker.empty() && project.empty())
project = _L("Untitled");

27
src/slic3r/GUI/Plater.cpp
View file

@ -1595,7 +1595,7 @@ struct Plater::priv
}
return res;
}
void reset_project_dirty_after_save() { dirty_state.reset_after_save(); }
void reset_project_dirty_after_save() { m_undo_redo_stack_main.mark_current_as_saved(); dirty_state.reset_after_save(); }
void reset_project_dirty_initial_presets() { dirty_state.reset_initial_presets(); }
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
@ -2064,6 +2064,9 @@ Plater::priv::priv(Plater *q, MainFrame *main_frame)
// Initialize the Undo / Redo stack with a first snapshot.
this->take_snapshot(_L("New Project"), UndoRedo::SnapshotType::ProjectSeparator);
// Reset the "dirty project" flag.
m_undo_redo_stack_main.mark_current_as_saved();
dirty_state.update_from_undo_redo_stack(false);
this->q->Bind(EVT_LOAD_MODEL_OTHER_INSTANCE, [this](LoadFromOtherInstanceEvent& evt) {
BOOST_LOG_TRIVIAL(trace) << "Received load from other instance event.";
@ -4692,10 +4695,25 @@ void Plater::priv::take_snapshot(const std::string& snapshot_name, const UndoRed
model.wipe_tower.position = Vec2d(config.opt_float("wipe_tower_x"), config.opt_float("wipe_tower_y"));
model.wipe_tower.rotation = config.opt_float("wipe_tower_rotation_angle");
}
this->undo_redo_stack().take_snapshot(snapshot_name, model, view3D->get_canvas3d()->get_selection(), view3D->get_canvas3d()->get_gizmos_manager(), snapshot_data);
const GLGizmosManager& gizmos = view3D->get_canvas3d()->get_gizmos_manager();
if (snapshot_type == UndoRedo::SnapshotType::ProjectSeparator && wxGetApp().app_config->get("clear_undo_redo_stack_on_new_project") == "1")
this->undo_redo_stack().clear();
this->undo_redo_stack().take_snapshot(snapshot_name, model, view3D->get_canvas3d()->get_selection(), gizmos, snapshot_data);
if (snapshot_type == UndoRedo::SnapshotType::LeavingGizmoWithAction) {
// Filter all but the last UndoRedo::SnapshotType::GizmoAction in a row between the last UndoRedo::SnapshotType::EnteringGizmo and UndoRedo::SnapshotType::LeavingGizmoWithAction.
// The remaining snapshot will be renamed to a more generic name,
// depending on what gizmo is being left.
assert(gizmos.get_current() != nullptr);
std::string new_name = gizmos.get_current()->get_action_snapshot_name();
this->undo_redo_stack().reduce_noisy_snapshots(new_name);
} else if (snapshot_type == UndoRedo::SnapshotType::ProjectSeparator) {
// Reset the "dirty project" flag.
m_undo_redo_stack_main.mark_current_as_saved();
}
this->undo_redo_stack().release_least_recently_used();
dirty_state.update_from_undo_redo_stack(ProjectDirtyStateManager::UpdateType::TakeSnapshot);
dirty_state.update_from_undo_redo_stack(m_undo_redo_stack_main.project_modified());
// Save the last active preset name of a particular printer technology.
((this->printer_technology == ptFFF) ? m_last_fff_printer_profile_name : m_last_sla_printer_profile_name) = wxGetApp().preset_bundle->printers.get_selected_preset_name();
@ -4832,7 +4850,7 @@ void Plater::priv::undo_redo_to(std::vector<UndoRedo::Snapshot>::const_iterator
view3D->get_canvas3d()->force_main_toolbar_left_action(view3D->get_canvas3d()->get_main_toolbar_item_id("layersediting"));
}
dirty_state.update_from_undo_redo_stack(ProjectDirtyStateManager::UpdateType::UndoRedoTo);
dirty_state.update_from_undo_redo_stack(m_undo_redo_stack_main.project_modified());
}
void Plater::priv::update_after_undo_redo(const UndoRedo::Snapshot& snapshot, bool /* temp_snapshot_was_taken */)
@ -6743,7 +6761,6 @@ bool Plater::can_mirror() const { return p->can_mirror(); }
bool Plater::can_split(bool to_objects) const { return p->can_split(to_objects); }
const UndoRedo::Stack& Plater::undo_redo_stack_main() const { return p->undo_redo_stack_main(); }
void Plater::clear_undo_redo_stack_main() { p->undo_redo_stack_main().clear(); }
const UndoRedo::Stack& Plater::undo_redo_stack_active() const { return p->undo_redo_stack(); }
void Plater::enter_gizmos_stack() { p->enter_gizmos_stack(); }
void Plater::leave_gizmos_stack() { p->leave_gizmos_stack(); }
bool Plater::inside_snapshot_capture() { return p->inside_snapshot_capture(); }

1
src/slic3r/GUI/Plater.hpp
View file

@ -254,7 +254,6 @@ public:
// For the memory statistics.
const Slic3r::UndoRedo::Stack& undo_redo_stack_main() const;
void clear_undo_redo_stack_main();
const Slic3r::UndoRedo::Stack& undo_redo_stack_active() const;
// Enter / leave the Gizmos specific Undo / Redo stack. To be used by the SLA support point editing gizmo.
void enter_gizmos_stack();
void leave_gizmos_stack();

8
src/slic3r/GUI/Preferences.cpp
View file

@ -238,6 +238,14 @@ void PreferencesDialog::build(size_t selected_tab)
option = Option(def, "show_splash_screen");
m_optgroup_general->append_single_option_line(option);
// Clear Undo / Redo stack on new project
def.label = L("Clear Undo / Redo stack on new project");
def.type = coBool;
def.tooltip = L("Clear Undo / Redo stack on new project or when an existing project is loaded.");
def.set_default_value(new ConfigOptionBool{ app_config->get("clear_undo_redo_stack_on_new_project") == "1" });
option = Option(def, "clear_undo_redo_stack_on_new_project");
m_optgroup_general->append_single_option_line(option);
#if defined(_WIN32) || defined(__APPLE__)
def.label = L("Enable support for legacy 3DConnexion devices");
def.type = coBool;

292
src/slic3r/GUI/ProjectDirtyStateManager.cpp
View file

@ -6,7 +6,6 @@
#include "MainFrame.hpp"
#include "I18N.hpp"
#include "Plater.hpp"
#include "../Utils/UndoRedo.hpp"
#include <boost/algorithm/string/predicate.hpp>
@ -16,226 +15,38 @@
namespace Slic3r {
namespace GUI {
enum class EStackType
void ProjectDirtyStateManager::update_from_undo_redo_stack(bool dirty)
{
Main,
Gizmo
};
// returns the current active snapshot (the topmost snapshot in the undo part of the stack) in the given stack
static const UndoRedo::Snapshot* get_active_snapshot(const UndoRedo::Stack& stack) {
const std::vector<UndoRedo::Snapshot>& snapshots = stack.snapshots();
const size_t active_snapshot_time = stack.active_snapshot_time();
const auto it = std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(active_snapshot_time));
const int idx = it - snapshots.begin() - 1;
const Slic3r::UndoRedo::Snapshot* ret = (0 <= idx && idx < int(snapshots.size()) - 1) ?
&snapshots[idx] : nullptr;
assert(ret != nullptr);
return ret;
}
// returns the last saveable snapshot (the topmost snapshot in the undo part of the stack that can be saved) in the given stack
static const UndoRedo::Snapshot* get_last_saveable_snapshot(EStackType type, const UndoRedo::Stack& stack,
const ProjectDirtyStateManager::DirtyState::Gizmos& gizmos, size_t last_save_main) {
// returns true if the given snapshot is not saveable
auto skip_main = [&gizmos, last_save_main, &stack](const UndoRedo::Snapshot& snapshot) {
auto is_gizmo_with_modifications = [&gizmos, &stack](const UndoRedo::Snapshot& snapshot) {
if (boost::starts_with(snapshot.name, _utf8("Entering"))) {
if (gizmos.current)
return true;
std::string topmost_redo;
wxGetApp().plater()->undo_redo_topmost_string_getter(false, topmost_redo);
if (boost::starts_with(topmost_redo, _utf8("Leaving"))) {
const std::vector<UndoRedo::Snapshot>& snapshots = stack.snapshots();
const UndoRedo::Snapshot* leaving_snapshot = &(*std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(snapshot.timestamp + 1)));
if (gizmos.is_used_and_modified(*leaving_snapshot))
return true;
}
}
return false;
};
if (snapshot.name == _utf8("New Project"))
return true;
else if (snapshot.name == _utf8("Reset Project"))
return true;
else if (boost::starts_with(snapshot.name, _utf8("Load Project")))
return true;
else if (boost::starts_with(snapshot.name, _utf8("Selection")))
return true;
else if (boost::starts_with(snapshot.name, _utf8("Entering"))) {
if (last_save_main != snapshot.timestamp + 1 && !is_gizmo_with_modifications(snapshot))
return true;
}
else if (boost::starts_with(snapshot.name, _utf8("Leaving"))) {
if (last_save_main != snapshot.timestamp && !gizmos.is_used_and_modified(snapshot))
return true;
}
return false;
};
// returns true if the given snapshot is not saveable
auto skip_gizmo = [](const UndoRedo::Snapshot& snapshot) {
// put here any needed condition to skip the snapshot
return false;
};
const UndoRedo::Snapshot* curr = get_active_snapshot(stack);
const std::vector<UndoRedo::Snapshot>& snapshots = stack.snapshots();
size_t shift = 1;
while (curr->timestamp > 0 && ((type == EStackType::Main && skip_main(*curr)) || (type == EStackType::Gizmo && skip_gizmo(*curr)))) {
const UndoRedo::Snapshot* temp = curr;
curr = &(*std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(curr->timestamp - shift)));
shift = (curr == temp) ? shift + 1 : 1;
}
if (type == EStackType::Main) {
if (boost::starts_with(curr->name, _utf8("Entering")) && last_save_main == curr->timestamp + 1) {
std::string topmost_redo;
wxGetApp().plater()->undo_redo_topmost_string_getter(false, topmost_redo);
if (boost::starts_with(topmost_redo, _utf8("Leaving")))
curr = &(*std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(curr->timestamp + 1)));
}
}
return curr->timestamp > 0 ? curr : nullptr;
}
// returns the name of the gizmo contained in the given string
static std::string extract_gizmo_name(const std::string& s) {
static const std::array<std::string, 2> prefixes = { _utf8("Entering"), _utf8("Leaving") };
std::string ret;
for (const std::string& prefix : prefixes) {
if (boost::starts_with(s, prefix))
ret = s.substr(prefix.length() + 1);
if (!ret.empty())
break;
}
return ret;
}
void ProjectDirtyStateManager::DirtyState::Gizmos::add_used(const UndoRedo::Snapshot& snapshot)
{
const std::string name = extract_gizmo_name(snapshot.name);
auto it = used.find(name);
if (it == used.end())
it = used.insert({ name, { {} } }).first;
it->second.modified_timestamps.push_back(snapshot.timestamp);
}
void ProjectDirtyStateManager::DirtyState::Gizmos::remove_obsolete_used(const Slic3r::UndoRedo::Stack& main_stack)
{
const std::vector<UndoRedo::Snapshot>& snapshots = main_stack.snapshots();
for (auto& item : used) {
auto it = item.second.modified_timestamps.begin();
while (it != item.second.modified_timestamps.end()) {
size_t timestamp = *it;
auto snapshot_it = std::find_if(snapshots.begin(), snapshots.end(), [timestamp](const Slic3r::UndoRedo::Snapshot& snapshot) { return snapshot.timestamp == timestamp; });
if (snapshot_it == snapshots.end())
it = item.second.modified_timestamps.erase(it);
else
++it;
}
}
}
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
bool ProjectDirtyStateManager::DirtyState::Gizmos::any_used_modified() const
{
for (auto& [name, gizmo] : used) {
if (!gizmo.modified_timestamps.empty())
return true;
}
return false;
}
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
// returns true if the given snapshot is contained in any of the gizmos caches
bool ProjectDirtyStateManager::DirtyState::Gizmos::is_used_and_modified(const UndoRedo::Snapshot& snapshot) const
{
for (const auto& item : used) {
for (size_t i : item.second.modified_timestamps) {
if (i == snapshot.timestamp)
return true;
}
}
return false;
}
void ProjectDirtyStateManager::DirtyState::Gizmos::reset()
{
used.clear();
}
void ProjectDirtyStateManager::update_from_undo_redo_stack(UpdateType type)
{
if (!wxGetApp().initialized())
return;
const Plater* plater = wxGetApp().plater();
if (plater == nullptr)
return;
const UndoRedo::Stack& main_stack = plater->undo_redo_stack_main();
const UndoRedo::Stack& active_stack = plater->undo_redo_stack_active();
if (&main_stack == &active_stack)
update_from_undo_redo_main_stack(type, main_stack);
else
update_from_undo_redo_gizmo_stack(type, active_stack);
wxGetApp().mainframe->update_title();
m_plater_dirty = dirty;
if (const Plater *plater = wxGetApp().plater(); plater && wxGetApp().initialized())
wxGetApp().mainframe->update_title();
}
void ProjectDirtyStateManager::update_from_presets()
{
m_state.presets = false;
m_presets_dirty = false;
// check switching of the presets only for exist/loaded project, but not for new
if (!wxGetApp().plater()->get_project_filename().IsEmpty()) {
for (const auto& [type, name] : wxGetApp().get_selected_presets())
m_state.presets |= !m_initial_presets[type].empty() && m_initial_presets[type] != name;
m_presets_dirty |= !m_initial_presets[type].empty() && m_initial_presets[type] != name;
}
m_state.presets |= wxGetApp().has_unsaved_preset_changes();
m_presets_dirty |= wxGetApp().has_unsaved_preset_changes();
wxGetApp().mainframe->update_title();
}
void ProjectDirtyStateManager::reset_after_save()
{
const Plater* plater = wxGetApp().plater();
const UndoRedo::Stack& main_stack = plater->undo_redo_stack_main();
const UndoRedo::Stack& active_stack = plater->undo_redo_stack_active();
if (&main_stack == &active_stack) {
const UndoRedo::Snapshot* saveable_snapshot = get_last_saveable_snapshot(EStackType::Main, main_stack, m_state.gizmos, m_last_save.main);
m_last_save.main = (saveable_snapshot != nullptr) ? saveable_snapshot->timestamp : 0;
}
else {
// Gizmo is active with its own Undo / Redo stack (for example the SLA support point editing gizmo).
const UndoRedo::Snapshot* main_active_snapshot = get_active_snapshot(main_stack);
if (boost::starts_with(main_active_snapshot->name, _utf8("Entering"))) {
if (m_state.gizmos.current)
m_last_save.main = main_active_snapshot->timestamp + 1;
}
const UndoRedo::Snapshot* saveable_snapshot = get_last_saveable_snapshot(EStackType::Gizmo, active_stack, m_state.gizmos, m_last_save.main);
m_last_save.gizmo = (saveable_snapshot != nullptr) ? saveable_snapshot->timestamp : 0;
}
reset_initial_presets();
m_state.reset();
this->reset_initial_presets();
m_plater_dirty = false;
m_presets_dirty = false;
wxGetApp().mainframe->update_title();
}
void ProjectDirtyStateManager::reset_initial_presets()
{
m_initial_presets = std::array<std::string, Preset::TYPE_COUNT>();
for (const auto& [type, name] : wxGetApp().get_selected_presets()) {
m_initial_presets.fill(std::string{});
for (const auto& [type, name] : wxGetApp().get_selected_presets())
m_initial_presets[type] = name;
}
}
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
@ -324,89 +135,10 @@ void ProjectDirtyStateManager::render_debug_window() const
}
}
if (m_state.gizmos.any_used_modified()) {
if (ImGui::CollapsingHeader("Gizmos", ImGuiTreeNodeFlags_DefaultOpen)) {
ImGui::Indent(10.0f);
for (const auto& [name, gizmo] : m_state.gizmos.used) {
if (!gizmo.modified_timestamps.empty()) {
if (ImGui::CollapsingHeader(name.c_str(), ImGuiTreeNodeFlags_DefaultOpen)) {
std::string modified_timestamps;
for (size_t i = 0; i < gizmo.modified_timestamps.size(); ++i) {
if (i > 0)
modified_timestamps += " | ";
modified_timestamps += std::to_string(gizmo.modified_timestamps[i]);
}
imgui.text(modified_timestamps);
}
}
}
ImGui::Unindent(10.0f);
}
}
imgui.end();
}
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
void ProjectDirtyStateManager::update_from_undo_redo_main_stack(UpdateType type, const Slic3r::UndoRedo::Stack& stack)
{
m_state.plater = false;
if (type == UpdateType::TakeSnapshot) {
if (m_last_save.main != 0) {
const std::vector<UndoRedo::Snapshot>& snapshots = stack.snapshots();
auto snapshot_it = std::find_if(snapshots.begin(), snapshots.end(), [this](const Slic3r::UndoRedo::Snapshot& snapshot) { return snapshot.timestamp == m_last_save.main; });
if (snapshot_it == snapshots.end())
m_last_save.main = 0;
}
m_state.gizmos.remove_obsolete_used(stack);
}
const UndoRedo::Snapshot* active_snapshot = get_active_snapshot(stack);
if (active_snapshot->name == _utf8("New Project") ||
active_snapshot->name == _utf8("Reset Project") ||
boost::starts_with(active_snapshot->name, _utf8("Load Project")))
return;
if (boost::starts_with(active_snapshot->name, _utf8("Entering"))) {
if (type == UpdateType::UndoRedoTo) {
std::string topmost_redo;
wxGetApp().plater()->undo_redo_topmost_string_getter(false, topmost_redo);
if (boost::starts_with(topmost_redo, _utf8("Leaving"))) {
const std::vector<UndoRedo::Snapshot>& snapshots = stack.snapshots();
const UndoRedo::Snapshot* leaving_snapshot = &(*std::lower_bound(snapshots.begin(), snapshots.end(), UndoRedo::Snapshot(active_snapshot->timestamp + 1)));
if (m_state.gizmos.is_used_and_modified(*leaving_snapshot)) {
m_state.plater = (leaving_snapshot != nullptr && leaving_snapshot->timestamp != m_last_save.main);
return;
}
}
}
m_state.gizmos.current = false;
m_last_save.gizmo = 0;
}
else if (boost::starts_with(active_snapshot->name, _utf8("Leaving"))) {
if (m_state.gizmos.current)
m_state.gizmos.add_used(*active_snapshot);
m_state.gizmos.current = false;
m_last_save.gizmo = 0;
}
const UndoRedo::Snapshot* last_saveable_snapshot = get_last_saveable_snapshot(EStackType::Main, stack, m_state.gizmos, m_last_save.main);
m_state.plater = (last_saveable_snapshot != nullptr && last_saveable_snapshot->timestamp != m_last_save.main);
}
void ProjectDirtyStateManager::update_from_undo_redo_gizmo_stack(UpdateType type, const Slic3r::UndoRedo::Stack& stack)
{
m_state.gizmos.current = false;
const UndoRedo::Snapshot* active_snapshot = get_active_snapshot(stack);
if (active_snapshot->name == "Gizmos-Initial")
return;
const UndoRedo::Snapshot* last_saveable_snapshot = get_last_saveable_snapshot(EStackType::Gizmo, stack, m_state.gizmos, m_last_save.main);
m_state.gizmos.current = (last_saveable_snapshot != nullptr && last_saveable_snapshot->timestamp != m_last_save.gizmo);
}
} // namespace GUI
} // namespace Slic3r

81
src/slic3r/GUI/ProjectDirtyStateManager.hpp
View file

@ -4,89 +4,32 @@
#include "libslic3r/Preset.hpp"
namespace Slic3r {
namespace UndoRedo {
class Stack;
struct Snapshot;
} // namespace UndoRedo
namespace GUI {
class ProjectDirtyStateManager
{
public:
enum class UpdateType : unsigned char
{
TakeSnapshot,
UndoRedoTo
};
struct DirtyState
{
struct Gizmos
{
struct Gizmo
{
std::vector<size_t> modified_timestamps;
};
bool current{ false };
std::map<std::string, Gizmo> used;
void add_used(const UndoRedo::Snapshot& snapshot);
void remove_obsolete_used(const Slic3r::UndoRedo::Stack& main_stack);
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
bool any_used_modified() const;
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
bool is_used_and_modified(const UndoRedo::Snapshot& snapshot) const;
void reset();
};
bool plater{ false };
bool presets{ false };
Gizmos gizmos;
bool is_dirty() const { return plater || presets || gizmos.current; }
void reset() {
plater = false;
presets = false;
gizmos.current = false;
}
};
private:
struct LastSaveTimestamps
{
size_t main{ 0 };
size_t gizmo{ 0 };
void reset() {
main = 0;
gizmo = 0;
}
};
DirtyState m_state;
LastSaveTimestamps m_last_save;
// keeps track of initial selected presets
std::array<std::string, Preset::TYPE_COUNT> m_initial_presets;
public:
bool is_dirty() const { return m_state.is_dirty(); }
void update_from_undo_redo_stack(UpdateType type);
public:
void update_from_undo_redo_stack(bool dirty);
void update_from_presets();
void reset_after_save();
void reset_initial_presets();
bool is_dirty() const { return m_plater_dirty || m_presets_dirty; }
#if ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
void render_debug_window() const;
#endif // ENABLE_PROJECT_DIRTY_STATE_DEBUG_WINDOW
private:
void update_from_undo_redo_main_stack(UpdateType type, const Slic3r::UndoRedo::Stack& stack);
void update_from_undo_redo_gizmo_stack(UpdateType type, const Slic3r::UndoRedo::Stack& stack);
// Does the Undo / Redo stack indicate the project is dirty?
bool m_plater_dirty { false };
// Do the presets indicate the project is dirty?
bool m_presets_dirty { false };
// Keeps track of preset names selected at the time of last project save.
std::array<std::string, Preset::TYPE_COUNT> m_initial_presets;
};
} // namespace GUI
} // namespace Slic3r
#endif // slic3r_ProjectDirtyStateManager_hpp_

180
src/slic3r/Utils/UndoRedo.cpp
View file

@ -45,10 +45,6 @@ static inline std::string ptr_to_string(const void* ptr)
}
#endif
SnapshotData::SnapshotData() : printer_technology(ptUnknown), flags(0), layer_range_idx(-1)
{
}
static std::string topmost_snapshot_name = "@@@ Topmost @@@";
bool Snapshot::is_topmost() const
@ -76,6 +72,7 @@ public:
void trim_begin(size_t new_begin) { m_begin = std::max(m_begin, new_begin); }
void trim_end(size_t new_end) { m_end = std::min(m_end, new_end); }
void extend_begin(size_t new_begin) { assert(new_begin <= m_begin); m_begin = new_begin; }
void extend_end(size_t new_end) { assert(new_end >= m_end); m_end = new_end; }
size_t memsize() const { return sizeof(this); }
@ -108,6 +105,10 @@ public:
// Release all data after the given timestamp. For the ImmutableObjectHistory, the shared pointer is NOT released.
// Return the amount of memory released.
virtual size_t release_after_timestamp(size_t timestamp) = 0;
// Release all data between the two timestamps. For the ImmutableObjectHistory, the shared pointer is NOT released.
// Used for reducing the number of snapshots for noisy operations like the support point edits.
// Return the amount of memory released.
virtual size_t release_between_timestamps(size_t timestamp_start, size_t timestamp_end) = 0;
// Release all optional data of this history.
virtual size_t release_optional() = 0;
// Restore optional data possibly released by release_optional.
@ -184,6 +185,34 @@ public:
return mem_released;
}
// Release all data between the two timestamps. For the ImmutableObjectHistory, the shared pointer is NOT released.
// Used for reducing the number of snapshots for noisy operations like the support point edits.
// Return the amount of memory released.
size_t release_between_timestamps(size_t timestamp_start, size_t timestamp_end) override {
size_t mem_released = 0;
if (! m_history.empty()) {
assert(this->valid());
// Find the span of m_history intervals that are fully in (timestamp_start, timestamp_end>, thus they will be never
// deserialized for any snapshot in <timestamp_start, timestamp_end).
auto it_lo = std::upper_bound(m_history.begin(), m_history.end(), timestamp_start, [](size_t l, const auto &r) { return l < r.begin(); });
auto it_hi = std::upper_bound(it_lo, m_history.end(), timestamp_end, [](size_t l, const auto &r) { return l < r.end(); });
if (it_lo != it_hi) {
// There are some intervals that start inside (timestamp_start, timestamp_end), that could be released.
assert(it_lo->begin() > timestamp_start && it_lo->end() <= timestamp_end);
assert(it_hi == m_history.end() || (it_hi->begin() > it_lo->begin() && it_hi->end() > timestamp_end));
if (it_lo != m_history.begin() && it_hi != m_history.end()) {
// One may consider merging the two intervals.
//FIXME merge them.
}
for (auto it = it_lo; it != it_hi; ++ it)
mem_released += it->memsize();
m_history.erase(it_lo, it_hi);
}
assert(this->valid());
}
return mem_released;
}
protected:
std::vector<T> m_history;
};
@ -352,9 +381,10 @@ public:
const Interval& interval() const { return m_interval; }
size_t begin() const { return m_interval.begin(); }
size_t end() const { return m_interval.end(); }
void trim_begin(size_t timestamp) { m_interval.trim_begin(timestamp); }
void trim_end (size_t timestamp) { m_interval.trim_end(timestamp); }
void extend_end(size_t timestamp) { m_interval.extend_end(timestamp); }
void trim_begin (size_t timestamp) { m_interval.trim_begin(timestamp); }
void trim_end (size_t timestamp) { m_interval.trim_end(timestamp); }
void extend_begin(size_t timestamp) { m_interval.extend_begin(timestamp); }
void extend_end (size_t timestamp) { m_interval.extend_end(timestamp); }
bool operator<(const MutableHistoryInterval& rhs) const { return m_interval < rhs.m_interval; }
bool operator==(const MutableHistoryInterval& rhs) const { return m_interval == rhs.m_interval; }
@ -524,6 +554,7 @@ public:
m_snapshots.clear();
m_active_snapshot_time = 0;
m_current_time = 0;
m_saved_snapshot_time = size_t(-1);
m_selection.clear();
}
@ -545,6 +576,7 @@ public:
// Store the current application state onto the Undo / Redo stack, remove all snapshots after m_active_snapshot_time.
void take_snapshot(const std::string& snapshot_name, const Slic3r::Model& model, const Slic3r::GUI::Selection& selection, const Slic3r::GUI::GLGizmosManager& gizmos, const SnapshotData &snapshot_data);
void reduce_noisy_snapshots(const std::string& new_name);
void load_snapshot(size_t timestamp, Slic3r::Model& model, Slic3r::GUI::GLGizmosManager& gizmos);
bool has_undo_snapshot() const;
@ -566,6 +598,10 @@ public:
size_t active_snapshot_time() const { return m_active_snapshot_time; }
bool temp_snapshot_active() const { return m_snapshots.back().timestamp == m_active_snapshot_time && ! m_snapshots.back().is_topmost_captured(); }
// Resets the "dirty project" status.
void mark_current_as_saved() { m_saved_snapshot_time = m_active_snapshot_time; }
bool project_modified() const;
const Selection& selection_deserialized() const { return m_selection; }
//protected:
@ -628,6 +664,10 @@ private:
}
void collect_garbage();
// Release snapshots between begin and end. Only erases data from m_snapshots, not from m_objects!
// Updates m_saved_snapshot_time.
std::vector<Snapshot>::iterator release_snapshots(std::vector<Snapshot>::iterator begin, std::vector<Snapshot>::iterator end);
// Maximum memory allowed to be occupied by the Undo / Redo stack. If the limit is exceeded,
// least recently used snapshots will be released.
size_t m_memory_limit;
@ -640,6 +680,9 @@ private:
std::vector<Snapshot> m_snapshots;
// Timestamp of the active snapshot.
size_t m_active_snapshot_time;
// Time at which the project state was saved into a project file.
// If set to zero, the time is not known, thus the project state should be considered unsaved.
size_t m_saved_snapshot_time { size_t(-1) };
// Logical time counter. m_current_time is being incremented with each snapshot taken.
size_t m_current_time;
// Last selection serialized or deserialized.
@ -857,9 +900,12 @@ void StackImpl::take_snapshot(const std::string& snapshot_name, const Slic3r::Mo
assert(m_active_snapshot_time <= m_current_time);
for (auto &kvp : m_objects)
kvp.second->release_after_timestamp(m_active_snapshot_time);
{
bool topmost_saved = false;
if (! m_snapshots.empty()) {
// If the project was saved for the topmost snapshot, restore the "saved" state after the "topmost" snapshot is taken.
topmost_saved = m_active_snapshot_time == m_saved_snapshot_time && m_active_snapshot_time == m_snapshots.back().timestamp;
auto it = std::lower_bound(m_snapshots.begin(), m_snapshots.end(), Snapshot(m_active_snapshot_time));
m_snapshots.erase(it, m_snapshots.end());
this->release_snapshots(it, m_snapshots.end());
}
// Take new snapshots.
this->save_mutable_object<Slic3r::Model>(model);
@ -871,8 +917,11 @@ void StackImpl::take_snapshot(const std::string& snapshot_name, const Slic3r::Mo
this->save_mutable_object<Selection>(m_selection);
this->save_mutable_object<Slic3r::GUI::GLGizmosManager>(gizmos);
// Save the snapshot info.
m_snapshots.emplace_back(snapshot_name, m_current_time ++, model.id().id, snapshot_data);
m_active_snapshot_time = m_current_time;
m_snapshots.emplace_back(snapshot_name, m_current_time, model.id().id, snapshot_data);
if (topmost_saved)
// Restore the "saved" timestamp.
m_saved_snapshot_time = m_current_time;
m_active_snapshot_time = ++ m_current_time;
// Save snapshot info of the last "current" aka "top most" state, that is only being serialized
// if undoing an action. Such a snapshot has an invalid Model ID assigned if it was not taken yet.
m_snapshots.emplace_back(topmost_snapshot_name, m_active_snapshot_time, 0, snapshot_data);
@ -885,6 +934,32 @@ void StackImpl::take_snapshot(const std::string& snapshot_name, const Slic3r::Mo
#endif /* SLIC3R_UNDOREDO_DEBUG */
}
void StackImpl::reduce_noisy_snapshots(const std::string& new_name)
{
// Preceding snapshot must be a "leave gizmo" snapshot.
assert(! m_snapshots.empty() && m_snapshots.back().is_topmost() && m_snapshots.back().timestamp == m_active_snapshot_time);
auto it_last = m_snapshots.end();
-- it_last; -- it_last;
assert(it_last != m_snapshots.begin() && (it_last->snapshot_data.snapshot_type == SnapshotType::LeavingGizmoNoAction || it_last->snapshot_data.snapshot_type == SnapshotType::LeavingGizmoWithAction));
if (it_last->snapshot_data.snapshot_type == SnapshotType::LeavingGizmoWithAction) {
for (-- it_last; it_last->snapshot_data.snapshot_type != SnapshotType::EnteringGizmo; -- it_last) {
if (it_last->snapshot_data.snapshot_type == SnapshotType::GizmoAction) {
it_last->name = new_name;
auto it = it_last;
for (-- it; it->snapshot_data.snapshot_type == SnapshotType::GizmoAction; -- it) ;
if (++ it < it_last) {
// Drop (it, it_last>
for (auto &kvp : m_objects)
// Drop products of <it + 1, it_last + 1>
kvp.second->release_between_timestamps(it->timestamp, (it_last + 1)->timestamp);
it_last = this->release_snapshots(it + 1, it_last + 1);
}
}
assert(it_last != m_snapshots.begin());
}
}
}
void StackImpl::load_snapshot(size_t timestamp, Slic3r::Model& model, Slic3r::GUI::GLGizmosManager& gizmos)
{
// Find the snapshot by time. It must exist.
@ -940,6 +1015,7 @@ bool StackImpl::undo(Slic3r::Model &model, const Slic3r::GUI::Selection &selecti
bool new_snapshot_taken = false;
if (m_active_snapshot_time == m_snapshots.back().timestamp && ! m_snapshots.back().is_topmost_captured()) {
// The current state is temporary. The current state needs to be captured to be redoable.
//FIXME add new a "topmost" SnapshotType?
this->take_snapshot(topmost_snapshot_name, model, selection, gizmos, snapshot_data);
// The line above entered another topmost_snapshot_name.
assert(m_snapshots.back().is_topmost());
@ -985,6 +1061,46 @@ bool StackImpl::redo(Slic3r::Model& model, Slic3r::GUI::GLGizmosManager& gizmos,
return true;
}
// If a snapshot modifies the snapshot type,
static inline bool snapshot_modifies_project(SnapshotType type)
{
return type == SnapshotType::Action || type == SnapshotType::GizmoAction || type == SnapshotType::ProjectSeparator;
}
static inline bool snapshot_modifies_project(const Snapshot &snapshot)
{
return snapshot_modifies_project(snapshot.snapshot_data.snapshot_type);
}
// Release snapshots between begin and end. Only erases data from m_snapshots, not from m_objects!
// Updates m_saved_snapshot_time.
std::vector<Snapshot>::iterator StackImpl::release_snapshots(std::vector<Snapshot>::iterator begin, std::vector<Snapshot>::iterator end)
{
assert(! m_snapshots.empty());
assert(begin <= end);
if (m_saved_snapshot_time >= begin->timestamp && (end == m_snapshots.end() || m_saved_snapshot_time < end->timestamp)) {
assert(m_saved_snapshot_time <= m_snapshots.back().timestamp);
auto it_saved = std::lower_bound(begin, end, Snapshot(m_saved_snapshot_time));
assert(it_saved != m_snapshots.end() && it_saved->timestamp == m_saved_snapshot_time);
auto it = it_saved;
for (; it != begin && ! snapshot_modifies_project(*it); -- it) ;
if (it == begin && ! snapshot_modifies_project(*it)) {
// Found a snapshot before begin, which captures the same project state.
m_saved_snapshot_time = (-- it)->timestamp;
} else {
auto it = it_saved;
for (; it != end && ! snapshot_modifies_project(*it); ++ it) ;
if (it == end && end != m_snapshots.end())
// Found a snapshot after end, which captures the same project state.
m_saved_snapshot_time = (-- it)->timestamp;
else
// State of the project is being lost. Indicate a "likely modified" project state until the project is saved again.
m_saved_snapshot_time = size_t(-1);
}
}
return m_snapshots.erase(begin, end);
}
void StackImpl::collect_garbage()
{
// Purge objects with empty histories.
@ -1064,6 +1180,7 @@ void StackImpl::release_least_recently_used()
} else
++ it;
}
//FIXME update the "saved" snapshot time.
m_snapshots.erase(m_snapshots.begin());
}
assert(current_memsize >= mem_released);
@ -1082,6 +1199,44 @@ void StackImpl::release_least_recently_used()
#endif /* SLIC3R_UNDOREDO_DEBUG */
}
bool StackImpl::project_modified() const
{
assert(! m_snapshots.empty());
if (m_saved_snapshot_time == size_t(-1))
// Don't know anything about the project state.
return true;
if (m_saved_snapshot_time == m_active_snapshot_time)
// Just saved at this step.
return false;
assert(m_saved_snapshot_time >= m_snapshots.front().timestamp && m_saved_snapshot_time <= m_snapshots.back().timestamp);
auto it_saved = std::lower_bound(m_snapshots.begin(), m_snapshots.end(), Snapshot(m_saved_snapshot_time));
assert(it_saved != m_snapshots.end() && it_saved->timestamp == m_saved_snapshot_time);
#ifndef NDEBUG
// Verify that there is a snapshot with "current time".
auto it_current = std::lower_bound(m_snapshots.begin(), m_snapshots.end(), Snapshot(m_active_snapshot_time));
assert(it_current != m_snapshots.end() && it_current->timestamp == m_active_snapshot_time);
#endif // NDEBUG
if (m_saved_snapshot_time < m_active_snapshot_time) {
// Search upwards. Ignore state of the "active" snapshot.
for (auto it = it_saved; it->timestamp < m_active_snapshot_time; ++ it)
if (snapshot_modifies_project(*it))
return true;
} else {
// Search downwards. Ignore state of the "saved" snapshot.
assert(m_saved_snapshot_time > m_active_snapshot_time);
for (auto it = it_saved - 1; it->timestamp >= m_active_snapshot_time; -- it)
if (snapshot_modifies_project(*it))
return true;
}
return false;
}
// Wrappers of the private implementation.
Stack::Stack() : pimpl(new StackImpl()) {}
Stack::~Stack() {}
@ -1094,6 +1249,7 @@ size_t Stack::memsize() const { return pimpl->memsize(); }
void Stack::release_least_recently_used() { pimpl->release_least_recently_used(); }
void Stack::take_snapshot(const std::string& snapshot_name, const Slic3r::Model& model, const Slic3r::GUI::Selection& selection, const Slic3r::GUI::GLGizmosManager& gizmos, const SnapshotData &snapshot_data)
{ pimpl->take_snapshot(snapshot_name, model, selection, gizmos, snapshot_data); }
void Stack::reduce_noisy_snapshots(const std::string& new_name) { pimpl->reduce_noisy_snapshots(new_name); }
bool Stack::has_undo_snapshot() const { return pimpl->has_undo_snapshot(); }
bool Stack::has_undo_snapshot(size_t time_to_load) const { return pimpl->has_undo_snapshot(time_to_load); }
bool Stack::has_redo_snapshot() const { return pimpl->has_redo_snapshot(); }
@ -1106,6 +1262,8 @@ const std::vector<Snapshot>& Stack::snapshots() const { return pimpl->snapshots(
const Snapshot& Stack::snapshot(size_t time) const { return pimpl->snapshot(time); }
size_t Stack::active_snapshot_time() const { return pimpl->active_snapshot_time(); }
bool Stack::temp_snapshot_active() const { return pimpl->temp_snapshot_active(); }
void Stack::mark_current_as_saved() { pimpl->mark_current_as_saved(); }
bool Stack::project_modified() const { return pimpl->project_modified(); }
} // namespace UndoRedo
} // namespace Slic3r

23
src/slic3r/Utils/UndoRedo.hpp
View file

@ -8,6 +8,7 @@
#include <cassert>
#include <libslic3r/ObjectID.hpp>
#include <libslic3r/Config.hpp>
typedef double coordf_t;
typedef std::pair<coordf_t, coordf_t> t_layer_height_range;
@ -15,7 +16,6 @@ typedef std::pair<coordf_t, coordf_t> t_layer_height_range;
namespace Slic3r {
class Model;
enum PrinterTechnology : unsigned char;
namespace GUI {
class Selection;
@ -25,8 +25,10 @@ namespace GUI {
namespace UndoRedo {
enum class SnapshotType : unsigned char {
// Some action modifying project state.
// Some action modifying project state, outside any EnteringGizmo / LeavingGizmo interval.
Action,
// Some action modifying project state, inside some EnteringGizmo / LeavingGizmo interval.
GizmoAction,
// Selection change at the Plater.
Selection,
// New project, Reset project, Load project ...
@ -48,14 +50,11 @@ enum class SnapshotType : unsigned char {
// which may be handy sometimes.
struct SnapshotData
{
// Constructor is defined in .cpp due to the forward declaration of enum PrinterTechnology.
SnapshotData();
SnapshotType snapshot_type;
PrinterTechnology printer_technology;
PrinterTechnology printer_technology { ptUnknown };
// Bitmap of Flags (see the Flags enum).
unsigned int flags;
int layer_range_idx;
unsigned int flags { 0 };
int layer_range_idx { -1 };
// Bitmask of various binary flags to be stored with the snapshot.
enum Flags {
@ -121,6 +120,9 @@ public:
// Store the current application state onto the Undo / Redo stack, remove all snapshots after m_active_snapshot_time.
void take_snapshot(const std::string& snapshot_name, const Slic3r::Model& model, const Slic3r::GUI::Selection& selection, const Slic3r::GUI::GLGizmosManager& gizmos, const SnapshotData &snapshot_data);
// To be called just after take_snapshot() when leaving a gizmo, inside which small edits like support point add / remove events or paiting actions were allowed.
// Remove all but the last edit between the gizmo enter / leave snapshots.
void reduce_noisy_snapshots(const std::string& new_name);
// To be queried to enable / disable the Undo / Redo buttons at the UI.
bool has_undo_snapshot() const;
@ -151,6 +153,11 @@ public:
// In that case the Undo action will capture the last snapshot.
bool temp_snapshot_active() const;
// Resets the "dirty project" status.
void mark_current_as_saved();
// Is the project modified with regard to the last "saved" state marked with mark_current_as_saved()?
bool project_modified() const;
// After load_snapshot() / undo() / redo() the selection is deserialized into a list of ObjectIDs, which needs to be converted
// into the list of GLVolume pointers once the 3D scene is updated.
const Selection& selection_deserialized() const;