fix gui alert window size

src/graphics/ui/GUI.cpp

@@ -5,6 +5,7 @@
 #include "elements/UINode.hpp"
 #include "elements/Label.hpp"
 #include "elements/Menu.hpp"
+#include "elements/Panel.hpp"
 
 #include "assets/Assets.hpp"
 #include "frontend/UiDocument.hpp"
@@ -23,8 +24,10 @@
 
 using namespace gui;
 
-GUI::GUI() : batch2D(std::make_unique<Batch2D>(1024)) {
+GUI::GUI()
-    container = std::make_shared<Container>(glm::vec2(1000));
+    : batch2D(std::make_unique<Batch2D>(1024)),
+      container(std::make_shared<Container>(glm::vec2(1000))) {
+    container->setId("root");
     uicamera = std::make_unique<Camera>(glm::vec3(), Window::height);
     uicamera->perspective = false;
     uicamera->flipped = true;
@@ -214,6 +217,14 @@ void GUI::draw(const DrawContext& pctx, const Assets& assets) {
     auto& viewport = ctx.getViewport();
     glm::vec2 wsize = viewport.size();
 
+    auto& page = menu->getCurrent();
+    if (page.panel) {
+        menu->setSize(page.panel->getSize());
+        page.panel->refresh();
+        if (auto panel = std::dynamic_pointer_cast<gui::Panel>(page.panel)) {
+            panel->cropToContent();
+        }
+    }
     menu->setPos((wsize - menu->getSize()) / 2.0f);
     uicamera->setFov(wsize.y);
 

src/graphics/ui/elements/Menu.cpp

@@ -65,9 +65,10 @@ void Menu::setPage(Page page, bool history) {
     setSize(current.panel->getSize());
 }
 
-void Menu::back() {
+bool Menu::back() {
-    if (pageStack.empty())
+    if (pageStack.empty()) {
-        return;
+        return false;
+    }
     Page page = pageStack.top();
     pageStack.pop();
 
@@ -77,6 +78,7 @@ void Menu::back() {
     }
 
     setPage(page, false);
+    return true;
 }
 
 void Menu::setPageLoader(PageLoaderFunc loader) {

src/graphics/ui/elements/Menu.hpp

@@ -54,7 +54,7 @@ namespace gui {
         PageLoaderFunc getPageLoader();
 
         /// @brief Set page to previous saved in history
-        void back();
+        bool back();
 
         /// @brief Clear pages history
         void clearHistory();

src/graphics/ui/elements/Panel.cpp

@@ -70,9 +70,6 @@ void Panel::remove(const std::shared_ptr<UINode> &node) {
 
 void Panel::refresh() {
     UINode::refresh();
-    std::stable_sort(nodes.begin(), nodes.end(), [](auto a, auto b) {
-        return a->getZIndex() < b->getZIndex();
-    });
 
     float x = padding.x;
     float y = padding.y;
@@ -80,20 +77,21 @@ void Panel::refresh() {
     if (orientation == Orientation::vertical) {
         float maxw = size.x;
         for (auto& node : nodes) {
-            glm::vec2 nodesize = node->getSize();
             const glm::vec4 margin = node->getMargin();
             y += margin.y;
             
             float ex = x + margin.x;
             node->setPos(glm::vec2(ex, y));
-            y += nodesize.y + margin.w + interval;
             
             float width = size.x - padding.x - padding.z - margin.x - margin.z;
             if (node->isResizing()) {
-                node->setSize(glm::vec2(width, nodesize.y));
+                node->setMaxSize({width, node->getMaxSize().y});
+                node->setSize(glm::vec2(width, node->getSize().y));
             }
             node->refresh();
-            maxw = fmax(maxw, ex+node->getSize().x+margin.z+padding.z);
+            glm::vec2 nodeSize = node->getSize();
+            y += nodeSize.y + margin.w + interval;
+            maxw = fmax(maxw, ex+nodeSize.x+margin.z+padding.z);
         }
         actualLength = y + padding.w;
     } else {

src/graphics/ui/elements/UINode.cpp

@@ -195,7 +195,8 @@ glm::vec2 UINode::getSize() const {
 
 void UINode::setSize(glm::vec2 size) {
     this->size = glm::vec2(
-        glm::max(minSize.x, size.x), glm::max(minSize.y, size.y)
+        glm::max(minSize.x, glm::min(maxSize.x, size.x)),
+        glm::max(minSize.y, glm::min(maxSize.y, size.y))
     );
 }
 
@@ -208,6 +209,15 @@ void UINode::setMinSize(glm::vec2 minSize) {
     setSize(getSize());
 }
 
+glm::vec2 UINode::getMaxSize() const {
+    return maxSize;
+}
+
+void UINode::setMaxSize(glm::vec2 maxSize) {
+    this->maxSize = maxSize;
+    setSize(getSize());
+}
+
 void UINode::setColor(glm::vec4 color) {
     this->color = color;
     this->hoverColor = color;

src/graphics/ui/elements/UINode.hpp

@@ -75,6 +75,8 @@ namespace gui {
         glm::vec2 size;
         /// @brief minimal element size
         glm::vec2 minSize {1.0f};
+        /// @brief maximal element size
+        glm::vec2 maxSize {1e6f};
         /// @brief element primary color (background-color or text-color if label)
         glm::vec4 color {1.0f};
         /// @brief element color when mouse is over it
@@ -224,6 +226,8 @@ namespace gui {
         virtual void setSize(glm::vec2 size);
         virtual glm::vec2 getMinSize() const;
         virtual void setMinSize(glm::vec2 size);
+        virtual glm::vec2 getMaxSize() const;
+        virtual void setMaxSize(glm::vec2 size);
         /// @brief Called in containers when new element added
         virtual void refresh() {};
         virtual void fullRefresh() {

src/graphics/ui/gui_util.cpp

@@ -31,7 +31,11 @@ void guiutil::alert(
     const std::wstring& text,
     const runnable& on_hidden
 ) {
-    auto panel = std::make_shared<Panel>(glm::vec2(500, 300), glm::vec4(4.0f), 4.0f);
+    auto panel = std::make_shared<Panel>(
+        glm::vec2(glm::min(650UL, glm::max(text.length() * 10, 200UL)), 300),
+        glm::vec4(4.0f),
+        4.0f
+    );
     panel->setColor(glm::vec4(0.0f, 0.0f, 0.0f, 0.5f));
 
     auto menuPtr = engine.getGUI()->getMenu();
@@ -40,14 +44,15 @@ void guiutil::alert(
         menu.removePage("<alert>");
         if (on_hidden) {
             on_hidden();
-        } else {
+        } else if (!menu.back()) {
-            menu.back();
+            menu.reset();
         }
     };
     
     auto label = std::make_shared<Label>(text);
     label->setMultiline(true);
     label->setSize(glm::vec2(1, 24));
+    label->setAutoResize(true);
     panel->add(label);
     panel->add(std::make_shared<Button>(
         langs::get(L"Ok"), glm::vec4(10.f), 
@@ -56,6 +61,7 @@ void guiutil::alert(
         }
     ));
     panel->refresh();
+
     panel->keepAlive(Events::keyCallbacks[keycode::ENTER].add([on_hidden_final](){
         on_hidden_final();
         return true;