NEW: support restore calibration status of printer

1.store each printer's calibration status to appconfig.
2.add retraction calibration
3.add choose fine calibration directly at flowrate calibration
4.add start pages for every calibration
5.add history window for pa calibration

Change-Id: I117fd46e689e0573e70e8579f5a52ba62d99f3d6

src/libslic3r/AppConfig.cpp

@@ -508,6 +508,15 @@ std::string AppConfig::load()
                         m_storage[it.key()][iter.key()] = iter.value().get<std::string>();
                     }
                 }
+            } else if (it.key() == "calis") {
+                for (auto &j : it.value()) {
+                    PrinterCaliInfo cali_info;
+                    cali_info.dev_id          = j["dev_id"].get<std::string>();
+                    cali_info.mode            = CalibMode(j["cali_mode"].get<int>());
+                    cali_info.state           = CalibState(j["cali_state"].get<int>());
+                    cali_info.filament_preset = j["preset"].get<std::string>();
+                    m_printer_cali_infos.emplace_back(cali_info);
+                }
             } else {
                 if (it.value().is_object()) {
                     for (auto iter = it.value().begin(); iter != it.value().end(); iter++) {
@@ -613,6 +622,15 @@ void AppConfig::save()
         j["app"]["filament_colors"].push_back(filament_color);
     }
 
+    for (const auto &cali_info : m_printer_cali_infos) {
+        json json;
+        json["dev_id"]             = cali_info.dev_id;
+        json["cali_mode"]          = int(cali_info.mode);
+        json["cali_state"]         = int(cali_info.state);
+        json["preset"]             = cali_info.filament_preset;
+        j["calis"].push_back(json);
+    }
+
     // Write the other categories.
     for (const auto& category : m_storage) {
         if (category.first.empty())
@@ -939,6 +957,22 @@ void AppConfig::set_vendors(const AppConfig &from)
     m_dirty = true;
 }
 
+void AppConfig::save_printer_cali_infos(const PrinterCaliInfo &cali_info)
+{
+    auto iter = std::find_if(m_printer_cali_infos.begin(), m_printer_cali_infos.end(), [&cali_info](const PrinterCaliInfo &cali_info_item) {
+        return cali_info_item.dev_id == cali_info.dev_id;
+    });
+
+    if (iter == m_printer_cali_infos.end()) {
+        m_printer_cali_infos.emplace_back(cali_info);
+    } else {
+        (*iter).filament_preset = cali_info.filament_preset;
+        (*iter).mode            = cali_info.mode;
+        (*iter).state           = cali_info.state;
+    }
+    m_dirty = true;
+}
+
 std::string AppConfig::get_last_dir() const
 {
     const auto it = m_storage.find("recent");

src/libslic3r/AppConfig.hpp

@@ -9,6 +9,7 @@
 
 #include "libslic3r/Config.hpp"
 #include "libslic3r/Semver.hpp"
+#include "Calib.hpp"
 
 using namespace nlohmann;
 
@@ -178,6 +179,9 @@ public:
         m_dirty                = true;
     }
 
+	const std::vector<PrinterCaliInfo> &get_printer_cali_infos() const { return m_printer_cali_infos; }
+    void save_printer_cali_infos(const PrinterCaliInfo& cali_info);
+
 	// return recent/last_opened_folder or recent/settings_folder or empty string.
 	std::string 		get_last_dir() const;
 	void 				update_config_dir(const std::string &dir);
@@ -276,6 +280,8 @@ private:
 
 	std::vector<std::string>									m_filament_presets;
     std::vector<std::string>									m_filament_colors;
+
+	std::vector<PrinterCaliInfo>								m_printer_cali_infos;
 };
 
 } // namespace Slic3r

src/libslic3r/Calib.hpp

@@ -15,7 +15,23 @@ enum class CalibMode : int {
     Calib_Vol_speed_Tower,
     Calib_VFA_Tower,
     Calib_Retraction_tower
+};
 
+enum class CalibState {
+    Start = 0,
+    Preset,
+    Calibration,
+    CoarseSave,
+    FineCalibration,
+    Save,
+};
+
+struct PrinterCaliInfo
+{
+    std::string dev_id;
+    CalibMode   mode;
+    CalibState  state;
+    std::string filament_preset;
 };
 
 struct Calib_Params