dialog: precalculate layout size (#7)

Author: vaxerski

flake.lock

@@ -14,6 +14,7 @@
 #include <hyprutils/string/String.hpp>
 
 #include <print>
+#include <algorithm>
 
 using namespace Hyprutils::Memory;
 using namespace Hyprutils::Math;
@@ -25,6 +26,7 @@ using namespace Hyprtoolkit;
 #define UP CUniquePointer
 
 static SP<IBackend> backend;
+static SP<IWindow>  window;
 
 //
 int main(int argc, char** argv, char** envp) {
@@ -97,25 +99,22 @@ int main(int argc, char** argv, char** envp) {
     replaceInString(textStr, "<br/>", "\n");
     replaceInString(textStr, "\\n", "\n");
 
-    //
-    auto window =
-        CWindowBuilder::begin()->preferredSize({480, 180})->minSize({480, 180})->maxSize({480, 180})->appTitle(std::move(appTitle))->appClass("hyprland-dialog")->commence();
-
-    window->m_rootElement->addChild(CRectangleBuilder::begin()->color([] { return backend->getPalette()->m_colors.background; })->commence());
+    const auto  FONT_SIZE = CFontSize{CFontSize::HT_FONT_TEXT}.ptSize();
+    const float WINDOW_X  = FONT_SIZE * 50.F;
 
-    auto layout = CColumnLayoutBuilder::begin()->size({CDynamicSize::HT_SIZE_PERCENT, CDynamicSize::HT_SIZE_PERCENT, {1.F, 1.F}})->commence();
+    // for now do auto to estimate size
+    auto layout = CColumnLayoutBuilder::begin()->size({CDynamicSize::HT_SIZE_ABSOLUTE, CDynamicSize::HT_SIZE_AUTO, {WINDOW_X, 1.F}})->commence();
     layout->setMargin(3);
 
     auto layoutInner = CColumnLayoutBuilder::begin()->size({CDynamicSize::HT_SIZE_PERCENT, CDynamicSize::HT_SIZE_AUTO, {0.85F, 1.F}})->commence();
 
-    window->m_rootElement->addChild(layout);
-
     layout->addChild(layoutInner);
     layoutInner->setGrow(true);
     layoutInner->setPositionMode(Hyprtoolkit::IElement::HT_POSITION_ABSOLUTE);
     layoutInner->setPositionFlag(Hyprtoolkit::IElement::HT_POSITION_FLAG_HCENTER, true);
 
-    auto title = CTextBuilder::begin()->text(std::move(titleStr))->fontSize({CFontSize::HT_FONT_H2})->color([] { return backend->getPalette()->m_colors.text; })->commence();
+    auto title =
+        CTextBuilder::begin()->text(std::move(titleStr))->fontSize({CFontSize::HT_FONT_H2})->async(false)->color([] { return backend->getPalette()->m_colors.text; })->commence();
 
     auto hr = CRectangleBuilder::begin() //
                   ->color([] { return CHyprColor{backend->getPalette()->m_colors.text.darken(0.65)}; })
@@ -124,18 +123,22 @@ int main(int argc, char** argv, char** envp) {
 
     hr->setMargin(4);
 
-    auto content =
-        CTextBuilder::begin()->text(std::move(textStr))->fontSize(CFontSize{CFontSize::HT_FONT_TEXT})->color([] { return backend->getPalette()->m_colors.text; })->commence();
+    auto content = CTextBuilder::begin()
+                       ->text(std::move(textStr))
+                       ->fontSize(CFontSize{CFontSize::HT_FONT_TEXT})
+                       ->async(false)
+                       ->color([] { return backend->getPalette()->m_colors.text; })
+                       ->commence();
 
     std::vector<SP<CButtonElement>> buttons;
 
     for (const auto& bstr : buttonsStrs) {
         buttons.emplace_back(CButtonBuilder::begin()
                                  ->label(std::string{bstr})
-                                 ->onMainClick([w = WP<IWindow>{window}, str = bstr](auto) {
+                                 ->onMainClick([str = bstr](auto) {
                                      std::println("{}", str);
-                                     if (w)
-                                         w->close();
+                                     if (window)
+                                         window->close();
                                      backend->destroy();
                                  })
                                  ->size({CDynamicSize::HT_SIZE_AUTO, CDynamicSize::HT_SIZE_AUTO, {1, 1}})
@@ -159,6 +162,30 @@ int main(int argc, char** argv, char** envp) {
 
     layout->addChild(layout2);
 
+    {
+        // calculate the layout size before we open the window to size it properly
+        SP<CNullElement> null = CNullBuilder::begin()->size({CDynamicSize::HT_SIZE_ABSOLUTE, CDynamicSize::HT_SIZE_ABSOLUTE, {WINDOW_X, 99999999.F}})->commence();
+
+        null->addChild(layout);
+        layout->forceReposition();
+    }
+
+    const float WINDOW_Y = layout->size().y + 50 /* pad */;
+
+    layout->rebuild()->size({CDynamicSize::HT_SIZE_PERCENT, CDynamicSize::HT_SIZE_PERCENT, {1.F, 1.F}})->commence();
+
+    //
+    window = CWindowBuilder::begin()
+                 ->preferredSize({WINDOW_X, WINDOW_Y})
+                 ->minSize({WINDOW_X, WINDOW_Y})
+                 ->maxSize({WINDOW_X, WINDOW_Y})
+                 ->appTitle(std::move(appTitle))
+                 ->appClass("hyprland-dialog")
+                 ->commence();
+
+    window->m_rootElement->addChild(CRectangleBuilder::begin()->color([] { return backend->getPalette()->m_colors.background; })->commence());
+    window->m_rootElement->addChild(layout);
+
     window->m_events.closeRequest.listenStatic([w = WP<IWindow>{window}] {
         w->close();
         backend->destroy();