xml: second Button constructor support

src/frontend/menu/menu.cpp

@@ -244,12 +244,11 @@ std::shared_ptr<Panel> create_worlds_panel(Engine* engine) {
         });
         btn->add(std::make_shared<Label>(namews), glm::vec2(8, 8));
 
-        auto image = std::make_shared<Image>("gui/delete_icon", glm::vec2(32, 32));
+        auto delbtn = std::dynamic_pointer_cast<Button>(guiutil::create(
-        image->setColor(glm::vec4(1, 1, 1, 0.5f));
+            "<button color='#00000000' hover-color='#FFFFFF2B' padding='2,2,2,2'>"
-
+            "    <image src='gui/delete_icon' size='32,32' color='#FFFFFF80'/>"
-        auto delbtn = std::make_shared<Button>(image, glm::vec4(2));
+            "</button>"
-        delbtn->setColor(glm::vec4(0.0f));
+        ));
-        delbtn->setHoverColor(glm::vec4(1.0f, 1.0f, 1.0f, 0.17f));
         delbtn->listenAction([=](GUI* gui) {
             guiutil::confirm(gui, langs::get(L"delete-confirm", L"world")+
             L" ("+util::str2wstr_utf8(folder.u8string())+L")", [=]() {
@@ -281,8 +280,7 @@ void create_main_menu_panel(Engine* engine) {
 }
 
 void create_404_page(Engine* engine) {
-        auto menu = engine->getGUI()->getMenu();
+    auto menu = engine->getGUI()->getMenu();
-
     auto panel = menus::create_page(engine, "404", 400, 0.0f, 8);
     panel->add(guiutil::create("<label context='menu'>@Page does not exists</label>"));
     panel->add(guiutil::backButton(menu));

src/graphics/ui/gui_xml.cpp

@@ -118,7 +118,7 @@ void UiXmlReader::readUINode(UiXmlReader& reader, xml::xmlelement element, UINod
     _readUINode(reader, element, node);
 }
 
-static void _readPanel(UiXmlReader& reader, xml::xmlelement element, Panel& panel) {
+static void _readPanel(UiXmlReader& reader, xml::xmlelement element, Panel& panel, bool subnodes=true) {
     _readUINode(reader, element, panel);
 
     if (element->has("padding")) {
@@ -136,12 +136,14 @@ static void _readPanel(UiXmlReader& reader, xml::xmlelement element, Panel& pane
     if (element->has("max-length")) {
         panel.setMaxLength(element->attr("max-length").asInt());
     }
-    for (auto& sub : element->getElements()) {
+    if (subnodes) {
-        if (sub->isText())
+        for (auto& sub : element->getElements()) {
-            continue;
+            if (sub->isText())
-        auto subnode = reader.readUINode(sub);
+                continue;
-        if (subnode) {
+            auto subnode = reader.readUINode(sub);
-            panel.add(subnode);
+            if (subnode) {
+                panel.add(subnode);
+            }
         }
     }
 }
@@ -197,9 +199,16 @@ static std::shared_ptr<UINode> readPanel(UiXmlReader& reader, xml::xmlelement el
 }
 
 static std::shared_ptr<UINode> readButton(UiXmlReader& reader, xml::xmlelement element) {
-    std::wstring text = readAndProcessInnerText(element, reader.getContext());
+    std::shared_ptr<Button> button;
-    auto button = std::make_shared<Button>(text, glm::vec4(0.0f), nullptr);
+    if (!element->getElements().empty()) {
-    _readPanel(reader, element, *button);
+        glm::vec4 padding = element->attr("padding", "0,0,0,0").asVec4();
+        button = std::make_shared<Button>(reader.readUINode(element->getElements().at(0)), padding);
+        _readPanel(reader, element, *button, false);
+    } else {
+        std::wstring text = readAndProcessInnerText(element, reader.getContext());
+        button = std::make_shared<Button>(text, glm::vec4(0.0f), nullptr);
+        _readPanel(reader, element, *button, true);
+    }
 
     if (element->has("onclick")) {
         auto callback = scripting::create_runnable(