From 2cbd4973a0700e99c413e6e27f009898133c9fe4 Mon Sep 17 00:00:00 2001
From: jmug <u.g.a.mariano@gmail.com>
Date: Sat, 19 Apr 2025 21:08:26 -0700
Subject: [PATCH] Clay main

Signed-off-by: jmug <u.g.a.mariano@gmail.com>
---
 main.c | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++------
 1 file changed, 103 insertions(+), 11 deletions(-)

diff --git a/main.c b/main.c
index 39e09b4..483a824 100644
--- a/main.c
+++ b/main.c
@@ -1,18 +1,110 @@
-#include "raylib.h"
+#define CLAY_IMPLEMENTATION
+#include "./clay-0.13/clay.h"
+#include "./clay-0.13/renderers/raylib/clay_renderer_raylib.c"
 
-int main(void)
-{
-    InitWindow(600, 400, "raylib [core] example - basic window");
+#define RAYLIB_VECTOR2_TO_CLAY_VECTOR2(vector) (Clay_Vector2) { .x = vector.x, .y = vector.y }
 
-    while (!WindowShouldClose())
-    {
-        BeginDrawing();
-            ClearBackground(RAYWHITE);
-            DrawText("Congrats! You created your first window!", 190, 200, 20, LIGHTGRAY);
-        EndDrawing();
+bool reinitializeClay = false;
+
+void HandleButtonInteraction(Clay_ElementId elementId, Clay_PointerData pointerData, void *userData) {
+    if (pointerData.state == CLAY_POINTER_DATA_PRESSED_THIS_FRAME) {
+        printf("You pressed the button!\n");
+    }
+}
+
+void HandleClayErrors(Clay_ErrorData errorData) {
+    printf("%s", errorData.errorText.chars);
+    if (errorData.errorType == CLAY_ERROR_TYPE_ELEMENTS_CAPACITY_EXCEEDED) {
+        reinitializeClay = true;
+        Clay_SetMaxElementCount(Clay_GetMaxElementCount() * 2);
+    } else if (errorData.errorType == CLAY_ERROR_TYPE_TEXT_MEASUREMENT_CAPACITY_EXCEEDED) {
+        reinitializeClay = true;
+        Clay_SetMaxMeasureTextCacheWordCount(Clay_GetMaxMeasureTextCacheWordCount() * 2);
+    }
+}
+
+void ExpandContainer() {
+    CLAY({
+        .backgroundColor = {0, 0, 0, 0},
+        .layout = {
+            .sizing = {
+                .width = CLAY_SIZING_GROW(),
+                .height = CLAY_SIZING_GROW() 
+            }
+        }
+    }) {}
+}
+
+Clay_RenderCommandArray CreateLayout() {
+    Clay_BeginLayout();
+
+    CLAY({
+        .backgroundColor = {255, 255, 255, 255},
+        .layout = {
+            .sizing = {
+                .width = CLAY_SIZING_GROW(),
+                .height = CLAY_SIZING_GROW() 
+            },
+            .childAlignment = { .x = CLAY_ALIGN_X_CENTER, .y = CLAY_ALIGN_Y_CENTER }
+        }
+    }) {
+        CLAY({
+            .backgroundColor = {255, 0, 0, 255},
+            .layout = {
+                .sizing = {
+                    .width = CLAY_SIZING_PERCENT(0.25),
+                    .height = CLAY_SIZING_PERCENT(0.25) 
+                },
+            }
+        }) {
+            Clay_OnHover(HandleButtonInteraction, NULL);
+        }
     }
 
-    CloseWindow();
+    return Clay_EndLayout();
+}
 
+void UpdateDrawFrame(Font* fonts)
+{
+    Vector2 mouseWheelDelta = GetMouseWheelMoveV();
+    float mouseWheelX = mouseWheelDelta.x;
+    float mouseWheelY = mouseWheelDelta.y;
+
+    //----------------------------------------------------------------------------------
+    // Handle scroll containers
+    Clay_Vector2 mousePosition = RAYLIB_VECTOR2_TO_CLAY_VECTOR2(GetMousePosition());
+    Clay_SetPointerState(mousePosition, IsMouseButtonDown(0));
+    Clay_SetLayoutDimensions((Clay_Dimensions) { (float)GetScreenWidth(), (float)GetScreenHeight() });
+
+    Clay_UpdateScrollContainers(true, (Clay_Vector2) {mouseWheelX, mouseWheelY}, GetFrameTime());
+    // Generate the auto layout for rendering
+    Clay_RenderCommandArray renderCommands = CreateLayout();
+    // RENDERING ---------------------------------
+    BeginDrawing();
+    ClearBackground(BLACK);
+    Clay_Raylib_Render(renderCommands, fonts);
+    EndDrawing();
+    //----------------------------------------------------------------------------------
+}
+int main(void)
+{
+    uint64_t totalMemorySize = Clay_MinMemorySize();
+    Clay_Arena clayMemory = Clay_CreateArenaWithCapacityAndMemory(totalMemorySize, malloc(totalMemorySize));
+    Clay_Initialize(clayMemory, (Clay_Dimensions) { (float)GetScreenWidth(), (float)GetScreenHeight() }, (Clay_ErrorHandler) { HandleClayErrors, 0 });
+    Clay_Raylib_Initialize(720, 720, "Clay - Raylib Renderer Example", FLAG_VSYNC_HINT | FLAG_FULLSCREEN_MODE | FLAG_MSAA_4X_HINT);
+    HideCursor();
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        if (reinitializeClay) {
+            Clay_SetMaxElementCount(8192);
+            totalMemorySize = Clay_MinMemorySize();
+            clayMemory = Clay_CreateArenaWithCapacityAndMemory(totalMemorySize, malloc(totalMemorySize));
+            Clay_Initialize(clayMemory, (Clay_Dimensions) { (float)GetScreenWidth(), (float)GetScreenHeight() }, (Clay_ErrorHandler) { HandleClayErrors, 0 });
+            reinitializeClay = false;
+        }
+        UpdateDrawFrame(NULL);
+    }
     return 0;
 }