add export depth menu

data/layout.xml

@@ -1420,6 +1420,9 @@ Here's a list of what's available in this release.
       <button-custom id="file-submenu-export-layers" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
         <text text="Separate Layers" grow="1" margin="0 0 0 5"/>
       </button-custom>
+      <button-custom id="file-submenu-export-depth" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
+        <text text="3D View + Depth" grow="1" margin="0 0 0 5"/>
+      </button-custom>
     </popup-menu>
   </layout>
   

src/app.h

@@ -184,6 +184,7 @@ public:
     void dialog_browse();
     void dialog_export(std::string ext);
     void dialog_export_layers();
+    void dialog_export_depth();
 	void dialog_export_cubes();
     void dialog_layer_rename();
     void dialog_resize();

src/app_dialogs.cpp

@@ -460,6 +460,29 @@ void App::dialog_export_layers()
     }
 }
 
+void App::dialog_export_depth()
+{
+    if (!check_license())
+    {
+        message_box("License", "This function is disabled in demo mode.");
+        return;
+    }
+
+    if (canvas)
+    {
+        // TODO: use picker
+        canvas->m_canvas->export_layers(doc_name, [this] {
+#if defined(__IOS__)
+            message_box("Export 3D View + Depth", "Image and depth exported to Files/PanoPainter");
+#elif defined(__OSX__)
+            message_box("Export 3D View + Depth", "Image and depth exported to Pictures/PanoPainter folder");
+#elif defined(_WIN32)
+            message_box("Export 3D View + Depth", "Image and depth exported to " + work_path);
+#endif
+        });
+    }
+}
+
 void App::dialog_resize()
 {
     auto dialog = std::make_shared<NodeDialogResize>();

src/app_layout.cpp

@@ -625,7 +625,14 @@ void App::init_menu_file()
                         popup->mouse_release();
                         popup->destroy();
                     };
-                };
+                    subpopup->find<NodeButtonCustom>("file-submenu-export-depth")->on_click = [this, subpopup, popup](Node*) {
+                        dialog_export_depth();
+                        subpopup->mouse_release();
+                        subpopup->destroy();
+                        popup->mouse_release();
+                        popup->destroy();
+                    };
+            };
             if (auto b = popup->find<NodeButtonCustom>("file-share"))
                 b->on_click = [this, popup](Node*) {
                     share_file(doc_path);

src/canvas.cpp

@@ -1544,6 +1544,30 @@ void Canvas::inject_xmp(std::string jpg_path)
 
 }
 
+void Canvas::export_depth(std::string file_name, std::function<void()> on_complete)
+{
+    if (App::I.check_license())
+    {
+        std::thread t([=] {
+            BT_SetTerminate();
+            export_depth_thread(file_name);
+            if (on_complete)
+                on_complete();
+        });
+        t.detach();
+    }
+}
+
+void Canvas::export_depth_thread(std::string file_name)
+{
+    App::I.async_start();
+    gl_state gl;
+    gl.save();
+
+    gl.restore();
+    App::I.async_end();
+}
+
 void Canvas::export_layers(std::string file_name, std::function<void()> on_complete)
 {
     if (App::I.check_license())

src/canvas.h

@@ -263,7 +263,9 @@ public:
     void export_equirectangular_thread(std::string file_path);
     void export_layers(std::string file_name, std::function<void()> on_complete = nullptr);
 	void export_layers_thread(std::string file_name);
-	void export_cubes();
+    void export_depth(std::string file_name, std::function<void()> on_complete = nullptr);
+    void export_depth_thread(std::string file_name);
+    void export_cubes();
     void project_save(std::function<void(bool)> on_complete = nullptr);
     void project_save(std::string file_path, std::function<void(bool)> on_complete = nullptr);
     bool project_save_thread(std::string file_path);