ENH: valid print all when selecting blank plate

and give a tips when print blank plate

Change-Id: Ic243dcee87d4a5a09de91c5806f1a94735f1052b
Signed-off-by: Stone Li <stone.li@bambulab.com>

src/slic3r/GUI/PartPlate.cpp

@@ -4011,7 +4011,9 @@ bool PartPlateList::is_all_slice_results_ready_for_print() const
 {
 	for (unsigned int i = 0; i < (unsigned int)m_plate_list.size(); ++i)
 	{
-		if (!m_plate_list[i]->is_slice_result_ready_for_print())
+		if (!m_plate_list[i]->is_slice_result_ready_for_print()
+			&& m_plate_list[i]->has_printable_instances()
+			)
 			return false;
 	}
 	return true;

src/slic3r/GUI/SelectMachine.cpp

@@ -1864,6 +1864,11 @@ void SelectMachineDialog::show_status(PrintDialogStatus status, std::vector<wxSt
         update_print_status_msg(msg_text, true, true);
         Enable_Send_Button(false);
         Enable_Refresh_Button(true);
+    } else if (status == PrintDialogStatus::PrintStatusBlankPlate) {
+        wxString msg_text = _L("Cannot send the print job for empty plate");
+        update_print_status_msg(msg_text, true, true);
+        Enable_Send_Button(false);
+        Enable_Refresh_Button(true);
     }
 }
 
@@ -2554,6 +2559,13 @@ void SelectMachineDialog::update_show_status()
     if (!dev) return;
     dev->check_pushing();
 
+    PartPlate* plate = m_plater->get_partplate_list().get_curr_plate();
+    // blank plate has no valid gcode file
+    if (plate&& !plate->is_valid_gcode_file()) {
+        show_status(PrintDialogStatus::PrintStatusBlankPlate);
+        return;
+    }
+
     MachineObject* obj_ = dev->get_my_machine(m_printer_last_select);
     if (!obj_) {
         update_ams_check(nullptr);

src/slic3r/GUI/SelectMachine.hpp

@@ -259,7 +259,8 @@ enum PrintDialogStatus {
     PrintStatusNotOnTheSameLAN,
     PrintStatusNeedForceUpgrading,
     PrintStatusNeedConsistencyUpgrading,
-    PrintStatusNotSupportedSendToSDCard
+    PrintStatusNotSupportedSendToSDCard,
+    PrintStatusBlankPlate
 };
 
 std::string get_print_status_info(PrintDialogStatus status);