implement save as, save version and file existence check on save

data/layout.xml

@@ -460,6 +460,14 @@
         <icon icon="disk" width="20"/>
         <text text="Save" margin="0 0 0 5" font-face="arial" font-size="11"/>
       </button-custom>
+      <button-custom id="file-save-as" text="Menu" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
+        <icon icon="disk" width="20"/>
+        <text text="Save as.." margin="0 0 0 5" font-face="arial" font-size="11"/>
+      </button-custom>
+      <button-custom id="file-save-ver" text="Menu" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
+        <icon icon="disk" width="20"/>
+        <text text="Save version" margin="0 0 0 5" font-face="arial" font-size="11"/>
+      </button-custom>
       <button-custom id="file-export" text="Menu" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
         <icon icon="disk" width="20"/>
         <text text="Export PNG" margin="0 0 0 5" font-face="arial" font-size="11"/>

engine/app_dialogs.cpp

@@ -21,21 +21,46 @@ void App::dialog_newdoc()
 
         dialog->btn_ok->on_click = [this, dialog](Node*)
         {
-            doc_name = dialog->input->m_string;
+            std::string name = dialog->input->m_string;
-            if (auto docname = layout[main_id]->find<NodeText>("txt-docname"))
+            std::string path = data_path + "/" + name + ".pano";
-                docname->set_text(("Panodoc: " + doc_name).c_str());
+
-            
+            auto action = [this, dialog, name] {
-            layers->clear();
+                doc_name = name;
-            canvas->m_canvas->m_layers.clear();
+                if (auto docname = layout[main_id]->find<NodeText>("txt-docname"))
-            canvas->m_canvas->m_order.clear();
+                    docname->set_text(("Panodoc: " + doc_name).c_str());
-            canvas->reset_camera();
+
-            ActionManager::clear();
+                layers->clear();
-            
+                canvas->m_canvas->m_layers.clear();
-            canvas->m_canvas->layer_add("Default");
+                canvas->m_canvas->m_order.clear();
-            layers->add_layer("Default");
+                canvas->reset_camera();
-            
+                ActionManager::clear();
-            dialog->destroy();
+
-            App::I.hideKeyboard();
+                canvas->m_canvas->layer_add("Default");
+                layers->add_layer("Default");
+
+                dialog->destroy();
+                App::I.hideKeyboard();
+            };
+
+            if (Asset::exist(path, false))
+            {
+                // ask confirm is file already exist
+                auto msgbox = new NodeMessageBox();
+                msgbox->m_manager = &layout;
+                msgbox->init();
+                msgbox->m_title->set_text("Warning");
+                msgbox->m_message->set_text("A document with this name already exists, continue?");
+                msgbox->btn_ok->on_click = [this, msgbox, action](Node*) {
+                    action();
+                    msgbox->destroy();
+                };
+                layout[main_id]->add_child(msgbox);
+            }
+            else
+            {
+                action();
+            }
+
         };
         dialog->btn_cancel->on_click = [this, dialog](Node*)
         {
@@ -120,23 +145,58 @@ void App::dialog_save()
 
         App::I.showKeyboard();
 
-        layout[main_id]->add_child(dialog);
-        layout[main_id]->update();
-
         dialog->btn_ok->on_click = [this, dialog](Node*)
         {
-            doc_name = dialog->input->m_string;
+            std::string name = dialog->input->m_string;
-            if (auto docname = layout[main_id]->find<NodeText>("txt-docname"))
+            std::string path = data_path + "/" + name + ".pano";
-                docname->set_text(("Panodoc: " + doc_name).c_str());
+
-            canvas->m_canvas->project_save(data_path + "/" + doc_name + ".pano");
+            if (name.empty())
-            dialog->destroy();
+            {
-            App::I.hideKeyboard();
+                auto msgbox = new NodeMessageBox();
+                msgbox->m_manager = &layout;
+                msgbox->init();
+                msgbox->m_title->set_text("Warning");
+                msgbox->m_message->set_text("You need to specify a name to file.");
+                layout[main_id]->add_child(msgbox);
+                return;
+            }
+
+            auto action = [this, dialog, name, path] {
+                doc_name = name;
+                if (auto docname = layout[main_id]->find<NodeText>("txt-docname"))
+                    docname->set_text(("Panodoc: " + doc_name).c_str());
+                canvas->m_canvas->project_save(path);
+                dialog->destroy();
+                App::I.hideKeyboard();
+            };
+
+            if (Asset::exist(path, false))
+            {
+                // ask confirm is file already exist
+                auto msgbox = new NodeMessageBox();
+                msgbox->m_manager = &layout;
+                msgbox->init();
+                msgbox->m_title->set_text("Warning");
+                msgbox->m_message->set_text(("Are you sure you want to overwrite " + name + "?").c_str());
+                msgbox->btn_ok->on_click = [this, msgbox, action](Node*) {
+                    action();
+                    msgbox->destroy();
+                };
+                layout[main_id]->add_child(msgbox);
+            }
+            else
+            {
+                action();
+            }
         };
         dialog->btn_cancel->on_click = [this, dialog](Node*)
         {
             dialog->destroy();
             App::I.hideKeyboard();
         };
+
+        layout[main_id]->add_child(dialog);
+        layout[main_id]->update();
     }
 }
 

engine/app_layout.cpp

@@ -366,10 +366,59 @@ void App::init_menu_file()
                 popup->destroy();
             };
             popup->find<NodeButtonCustom>("file-save")->on_click = [this](Node*) {
+                if (doc_name.empty())
+                {
+                    dialog_save();
+                }
+                else
+                {
+                    canvas->m_canvas->project_save(data_path + "/" + doc_name + ".pano");
+                }
+                popup->mouse_release();
+                popup->destroy();
+            };
+            popup->find<NodeButtonCustom>("file-save-as")->on_click = [this](Node*) {
                 dialog_save();
                 popup->mouse_release();
                 popup->destroy();
             };
+            popup->find<NodeButtonCustom>("file-save-ver")->on_click = [this](Node*) {
+                if (doc_name.empty())
+                {
+                    dialog_save();
+                }
+                else
+                {
+                    int current = 0;
+                    std::string next = doc_name + ".01";
+                    std::string base = doc_name;
+
+                    std::regex r(R"((.*)\.(\w{2})$)");
+                    std::smatch m;
+                    if (std::regex_search(doc_name, m, r))
+                    {
+                        std::string base = m[1].str();
+                        current = atoi(m[2].str().c_str());
+                    }
+
+                    for (int i = current + 1; i < 99; i++)
+                    {
+                        static char tmp_name[256];
+                        sprintf(tmp_name, "%s.%02d", base.c_str(), i);
+                        next = tmp_name;
+                        if (Asset::exist(data_path + "/" + next + ".pano", false))
+                            continue;
+                        break;
+                    }
+
+                    doc_name = next;
+                    if (auto docname = layout[main_id]->find<NodeText>("txt-docname"))
+                        docname->set_text(("Panodoc: " + doc_name).c_str());
+                    canvas->m_canvas->project_save(data_path + "/" + next + ".pano");
+                }
+                popup->mouse_release();
+                popup->destroy();
+            };
             popup->find<NodeButtonCustom>("file-export")->on_click = [this](Node*) {
                 dialog_export();
                 popup->mouse_release();

engine/asset.cpp

@@ -18,6 +18,24 @@ bool Asset::delete_file(const std::string& path)
     return true;
 }
 
+bool Asset::exist(std::string path, bool is_asset)
+{
+    if (is_asset)
+    {
+        Asset asset;
+        if (asset.open(path.c_str()))
+        {
+            asset.close();
+            return true;
+        }
+    }
+    else
+    {
+        std::ifstream f(path);
+        return f.is_open();
+    }
+}
+
 std::vector<std::string> Asset::list_files(std::string folder, bool is_asset, const std::string& filter_regex)
 {
     std::vector<std::string> names;

engine/asset.h

@@ -8,6 +8,7 @@ public:
     AAsset* m_asset = nullptr;
 #endif
     static std::vector<std::string> list_files(std::string folder, bool is_asset, const std::string& filter_regex);
+    static bool exist(std::string path, bool is_asset);
     static bool delete_file(const std::string& path);
 
     std::string m_current_path;