FIX: fix crash and blank page while cancel printing at 75 percent

jira: [STUDIO-11861]
Change-Id: I142df41ade73558849183fd245163cb5a7367f9c

src/slic3r/GUI/DeviceManager.cpp

@@ -722,17 +722,7 @@ MachineObject::~MachineObject()
         model_task = nullptr;
     }
 
-    if (get_slice_info_thread) {
+    free_slice_info();
-        if (get_slice_info_thread->joinable()) {
-            get_slice_info_thread->join();
-            get_slice_info_thread = nullptr;
-        }
-    }
-
-    if (slice_info) {
-        delete slice_info;
-        slice_info = nullptr;
-    }
 
     for (auto it = amsList.begin(); it != amsList.end(); it++) {
         for (auto tray_it = it->second->trayList.begin(); tray_it != it->second->trayList.end(); tray_it++) {
@@ -5545,10 +5535,6 @@ void MachineObject::set_modeltask(BBLModelTask* task)
     model_task = task;
 }
 
-void MachineObject::set_slice_info(BBLSliceInfo *info) {
-    slice_info = info;
-}
-
 void MachineObject::update_model_task()
 {
     if (request_model_result > 10) return;
@@ -5646,6 +5632,27 @@ void MachineObject::update_model_task()
     });
 }
 
+void MachineObject::free_slice_info()
+{
+    if (get_slice_info_thread)
+    {
+        if (get_slice_info_thread->joinable())
+        {
+            get_slice_info_thread->interrupt();
+            get_slice_info_thread->join();
+        }
+
+        delete get_slice_info_thread;
+        get_slice_info_thread = nullptr;
+    }
+
+    if (slice_info)
+    {
+        delete slice_info;
+        slice_info = nullptr;
+    }
+}
+
 void MachineObject::update_slice_info(std::string project_id, std::string profile_id, std::string subtask_id, int plate_idx)
 {
     if (!m_agent) return;
@@ -5671,6 +5678,8 @@ void MachineObject::update_slice_info(std::string project_id, std::string profil
             int plate_index = -1;
 
             if (!m_agent) return;
+            if (!slice_info) return;
+            if (get_slice_info_thread->interruption_requested()) { return;}
 
             if (plate_idx >= 0) {
                 plate_index = plate_idx;

src/slic3r/GUI/DeviceManager.hpp

@@ -1302,8 +1302,10 @@ public:
     BBLSubTask* get_subtask();
     BBLModelTask* get_modeltask();
     void set_modeltask(BBLModelTask* task);
-    void set_slice_info(BBLSliceInfo *info);
+
     void update_model_task();
+
+    void free_slice_info();
     void update_slice_info(std::string project_id, std::string profile_id, std::string subtask_id, int plate_idx);
 
     bool m_firmware_valid { false };

src/slic3r/GUI/SelectMachine.cpp

@@ -2811,8 +2811,7 @@ void SelectMachineDialog::on_print_job_cancel(wxCommandEvent &evt)
     BOOST_LOG_TRIVIAL(info) << "print_job: canceled";
     if (m_print_job && m_print_job->get_print_stage() == PrintingStageFinished)
     {
-        MessageDialog dlg(this, _L("As the print job has been successfully sent, the cancellation will not bring the print job to a halt. If you need to terminate this job, please stop it in 'Device' page."), _L("Info"), wxYES);
+        wxGetApp().show_dialog(_L("As the print job has been successfully sent, the cancellation will not bring the print job to a halt. If you need to terminate this job, please stop it in 'Device' page."));
-        dlg.ShowModal();
     }
 
     EnableEditing(true);

src/slic3r/GUI/StatusPanel.cpp

@@ -3790,7 +3790,7 @@ void StatusPanel::update_cloud_subtask(MachineObject *obj)
 
     if (is_task_changed(obj)) {
         obj->set_modeltask(nullptr);
-        obj->set_slice_info(nullptr);
+        obj->free_slice_info();
         reset_printing_values();
         BOOST_LOG_TRIVIAL(info) << "monitor: change to sub task id = " << obj->subtask_->task_id;
         if (web_request.IsOk() && web_request.GetState() == wxWebRequest::State_Active) {