create NodeDialogOpen and bind it to the layout template

data/layout.xml

@@ -166,7 +166,7 @@
   </layout>
 
   <!-- Open Dialog Popup -->
-  <layout id="popup-dialog-open">
+  <layout id="dialog-open">
     <border positioning="absolute" position="0 0" color=".4 .4 .4 .8" width="100%" height="100%" align="center" justify="center">
       <border thickness="1" border-color=".2" pad="3">
         <border width="400" height="30" color=".2 .2 .2 .9" dir="row" align="center" justify="center">
@@ -177,7 +177,7 @@
           <text text="Longer description for the error or the message." font-face="arial" font-size="11"></text>
           <node height="40" grow="1" dir="row" align="flex-end" justify="flex-end">
             <button id="btn-ok" text="Open Project" width="100" height="30" margin="0 10 0 0"/>
-            <button text="Cancel" width="60" height="30" pad="10"/>
+            <button id="btn-cancel" text="Cancel" width="60" height="30" pad="10"/>
           </node>
         </border>
       </border>

engine/app.cpp

@@ -477,20 +477,24 @@ void App::initLayout()
             button->on_click = [this,button](Node*) {
                 if (canvas)
                 {
-                    //canvas->m_canvas->project_open(data_path);
-                    //for (auto& i : canvas->m_canvas->m_order)
-                    //    layers->add_layer(canvas->m_canvas->m_layers[i].m_name.c_str());
-                    
                     // load thumbnail test
-                    auto open_dialog = layout[const_hash("popup-dialog-open")]->m_children[0]->clone();
+                    auto open_dialog = std::make_shared<NodeDialogOpen>();
+                    open_dialog->m_manager = &layout;
+                    open_dialog->data_path = data_path;
+                    open_dialog->init();
+                    open_dialog->create();
+                    open_dialog->loaded();
+
                     layout[main_id]->add_child(open_dialog);
                     layout[main_id]->update();
-                    if (open_dialog)
+                    
+                    open_dialog->btn_ok->on_click = [this,open_dialog](Node*)
                     {
-                        Image thumb = canvas->m_canvas->thumbnail_read(data_path);
+                        canvas->m_canvas->project_open(data_path);
-                        auto image_tex = open_dialog->find<NodeImageTexture>("thumb-tex");
+                        for (auto& i : canvas->m_canvas->m_order)
-                        image_tex->tex.create(thumb);
+                            layers->add_layer(canvas->m_canvas->m_layers[i].m_name.c_str());
-                    }
+                        open_dialog->destroy();
+                    };
                 }
             };
         }

engine/canvas.cpp

@@ -2,6 +2,7 @@
 #include "log.h"
 #include "canvas.h"
 
+ui::Canvas* ui::Canvas::I;
 glm::vec3 ui::Canvas::m_plane_origin[6] = {
     { 0, 0,-1}, // front
     { 1, 0, 0}, // right
@@ -597,6 +598,7 @@ void ui::Canvas::project_open(std::string data_path)
     fclose(fp);
     LOG("project restore from %s", name);
 }
+
 ui::Image ui::Canvas::thumbnail_generate(int w, int h)
 {
     // save viewport and clear color states
@@ -657,6 +659,7 @@ ui::Image ui::Canvas::thumbnail_generate(int w, int h)
 
     return std::move(image);
 }
+
 ui::Image ui::Canvas::thumbnail_read(std::string data_path)
 {
     static char name[128];
@@ -677,6 +680,7 @@ ui::Image ui::Canvas::thumbnail_read(std::string data_path)
     LOG("project thumbnail read from %s", name);
     return std::move(thumb);
 }
+
 ///////////////////////////////////////////////////////////////////////////////////////////
 
 void ui::Layer::destroy()

engine/canvas.h

@@ -39,6 +39,7 @@ class Canvas
     BrushMesh m_mesh;
     bool m_dirty = false;
 public:
+    static Canvas* I;
     bool m_erase = false;
     glm::mat4 m_mv;
     glm::mat4 m_proj;
@@ -70,6 +71,7 @@ public:
 
     std::vector<Layer::Snapshot> m_layers_snapshot;
 
+    Canvas() { I = this; }
     bool create(int width, int height);
     void resize(int width, int height);
     void layer_add(std::string name);

engine/layout.h

@@ -1898,6 +1898,42 @@ public:
     }
 };
 
+class NodeDialogOpen : public NodeBorder
+{
+public:
+    NodeButton* btn_cancel;
+    NodeButton* btn_ok;
+    std::string data_path;
+    virtual Node* clone_instantiate() const override { return new NodeDialogOpen(); }
+    virtual void clone_finalize(Node* dest) const override
+    {
+        NodeDialogOpen* n = static_cast<NodeDialogOpen*>(dest);
+        n->init_controls();
+    }
+    virtual void init() override
+    {
+        auto tpl = static_cast<const NodeBorder*>(init_template("dialog-open"));
+        m_color = tpl->m_color;
+        m_border_color = tpl->m_border_color;;
+        m_thinkness = tpl->m_thinkness;;
+        init_controls();
+    }
+    void init_controls()
+    {
+        btn_ok = find<NodeButton>("btn-ok");
+        btn_cancel = find<NodeButton>("btn-cancel");
+        btn_cancel->on_click = [this](Node*) {
+            destroy();
+        };
+    }
+    virtual void loaded() override
+    {
+        ui::Image thumb = ui::Canvas::I->thumbnail_read(data_path);
+        auto image_tex = find<NodeImageTexture>("thumb-tex");
+        image_tex->tex.create(thumb);
+    }
+};
+
 class NodeCanvas : public Node
 {
     bool m_dragging = false;