add message when failed to load thumbs from cloud

engine/app_cloud.cpp

@@ -112,18 +112,31 @@ void App::cloud_browse()
 
     dialog->btn_ok->on_click = [this, dialog](Node*)
     {
+        dialog->destroy();
         std::thread([this, dialog] {
+            async_start();
+            auto* m = layout[main_id]->add_child<NodeMessageBox>();
+            m->m_title->set_text("Downloading");
+            m->m_message->set_text("Download in progress, please wait...");
+            async_update();
+            async_end();
+            
             download(dialog->selected_file);
+            
             async_start();
             canvas->reset_camera();
             layers->clear();
+            async_end();
+            
             canvas->m_canvas->project_open_thread(dialog->selected_path);
+            
+            async_start();
             doc_name = dialog->selected_name;
             title_update(doc_name, canvas->m_canvas->m_width);
             for (auto& i : canvas->m_canvas->m_order)
                 layers->add_layer(canvas->m_canvas->m_layers[i].m_name.c_str());
-            dialog->destroy();
             ActionManager::clear();
+            m->destroy();
             async_update();
             async_end();
         }).detach();

engine/node.cpp

@@ -1,4 +1,5 @@
 #include "pch.h"
+#include "app.h"
 #include "log.h"
 #include "node.h"
 #include "layout.h"
@@ -28,6 +29,21 @@
 #include "node_dialog_cloud.h"
 #include "node_combobox.h"
 
+void Node::async_start()
+{
+    App::I.async_start();
+}
+
+void Node::async_update()
+{
+    App::I.async_update();
+}
+
+void Node::async_end()
+{
+    App::I.async_end();
+}
+
 void Node::watch(std::function<void(Node*)> observer)
 {
     observer(this);

engine/node.h

@@ -173,6 +173,16 @@ public:
                 return static_cast<T*>(found);
         return nullptr;
     }
+    template<class T> T* add_child()
+    {
+        auto* n = new T;
+        n->init();
+        n->create();
+        n->loaded();
+        add_child(n);
+        return n;
+    }
+
     virtual kEventResult on_event(Event* e);
     virtual kEventResult handle_event(Event* e);
     virtual void handle_resize(glm::vec2 old_size, glm::vec2 new_size);;
@@ -180,6 +190,9 @@ public:
     virtual void init();
     virtual void loaded();
     const Node* init_template(const char* id);
+    void async_start();
+    void async_update();
+    void async_end();
     void add_child(Node* n);
     void add_child(Node* n, int index);
     void add_child(std::shared_ptr<Node> n);

engine/node_dialog_cloud.cpp

@@ -53,6 +53,22 @@ void NodeDialogCloud::load_thumbs_thread()
         curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, curl_data_handler);
         curl_easy_setopt(curl, CURLOPT_URL, "http://omigamedev.ddns.net:8080/panoview/cloud-list.php");
         auto err = curl_easy_perform(curl);
+        if (err != CURLE_OK)
+        {
+            async_start();
+            auto* align = container->add_child<Node>();
+            align->SetWidthP(100.f);
+            align->SetHeightP(100.f);
+            align->SetAlign(YGAlignCenter);
+            align->SetJustify(YGJustifyCenter);
+            auto* t = align->add_child<NodeText>();
+            t->set_font(kFont::Arial_30);
+            t->set_text("Could not connect to the server");
+            async_update();
+            async_end();
+            return;
+        }
+        
         LOG("CLOUD LIST: %s", res.c_str());
 
         auto names = split(res, ',');
@@ -62,6 +78,8 @@ void NodeDialogCloud::load_thumbs_thread()
             std::string url = "http://omigamedev.ddns.net:8080/panoview/cloud-info.php?file=" + n;
             curl_easy_setopt(curl, CURLOPT_URL, url.c_str());
             auto err = curl_easy_perform(curl);
+            if (err != CURLE_OK)
+                break; // TODO: handle this error with a message or something
             auto info = split(res, ',', 3);
             int width = atoi(info[0].c_str());
             int height = atoi(info[1].c_str());

engine/node_text.cpp

@@ -23,9 +23,20 @@ void NodeText::clone_copy(Node* dest) const
 
 void NodeText::create()
 {
-    char font[64];
-    sprintf(font, "%s-%d", m_font.c_str(), m_font_size);
-    font_id = (kFont)const_hash(font);
+    if (!m_font.empty())
+    {
+        char font[64];
+        sprintf(font, "%s-%d", m_font.c_str(), m_font_size);
+        font_id = (kFont)const_hash(font);
+        m_text_mesh.create();
+        m_text_mesh.update(font_id, m_text.c_str());
+        SetSize(m_text_mesh.bb);
+    }
+}
+
+void NodeText::set_font(kFont fontID)
+{
+    font_id = fontID;
     m_text_mesh.create();
     m_text_mesh.update(font_id, m_text.c_str());
     SetSize(m_text_mesh.bb);

engine/node_text.h

@@ -17,5 +17,6 @@ public:
     virtual void restore_context() override;
     virtual void parse_attributes(kAttribute ka, const tinyxml2::XMLAttribute* attr) override;
     void set_text(const char* s);
+    void set_font(kFont fontID);
     virtual void draw() override;
 };