implement document resize with menu and dialog

src/app_dialogs.cpp

@@ -2,6 +2,7 @@
 #include "app.h"
 #include "node_dialog_open.h"
 #include "node_dialog_browse.h"
+#include "node_dialog_resize.h"
 #include "node_dialog_cloud.h"
 #include "node_about.h"
 #include "node_changelog.h"
@@ -244,8 +245,11 @@ void App::dialog_browse()
 
         dialog->btn_ok->on_click = [this, dialog](Node*)
         {
-            open_document(dialog->selected_path);
-            dialog->destroy();
+            if (dialog->is_selected())
+            {
+                open_document(dialog->selected_path);
+                dialog->destroy();
+            }
         };
         async_end();
     };
@@ -389,6 +393,30 @@ void App::dialog_export()
     }
 }
 
+void App::dialog_resize()
+{
+    auto dialog = std::make_shared<NodeDialogResize>();
+    dialog->m_manager = &layout;
+    dialog->init();
+    dialog->create();
+    dialog->loaded();
+
+    layout[main_id]->add_child(dialog);
+    layout[main_id]->update();
+
+    dialog->btn_ok->on_click = [this,dialog](Node*)
+    {
+        int res = dialog->get_resolution();
+        if (canvas)
+            canvas->m_canvas->resize(res, res);
+        App::I.title_update();
+        dialog->destroy();
+    };
+
+    popup->mouse_release();
+    popup->destroy();
+}
+
 void App::dialog_export_cubes()
 {
 	if (canvas)