[#114.1] Add iwyu enforcement to glfw_adapters and demo_app (#121)

Author: thomasnemer

examples/CMakeLists.txt

@@ -75,6 +75,11 @@ target_include_directories(glfw_adapters PUBLIC
 
 target_compile_features(glfw_adapters PUBLIC cxx_std_20)
 
+# Enable iwyu for glfw_adapters
+set_target_properties(glfw_adapters PROPERTIES
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
+)
+
 # === Demo App Example ===
 
 add_executable(prong_demo_app
@@ -100,6 +105,11 @@ target_compile_features(prong_demo_app PRIVATE cxx_std_20)
 # Suppress unused function warnings for STB (header-only library with many utilities)
 target_compile_options(prong_demo_app PRIVATE -Wno-unused-function)
 
+# Enable iwyu for prong_demo_app
+set_target_properties(prong_demo_app PROPERTIES
+    CXX_INCLUDE_WHAT_YOU_USE "${IWYU_PATH};-Xiwyu;--error;-Xiwyu;--verbose=3"
+)
+
 # Make example depend on formatting target
 add_dependencies(prong_demo_app format-example-sources)
 

examples/demo_app/main.cpp

@@ -11,10 +11,10 @@
 #include "scenes/demo_scene.h"
 #include <GLFW/glfw3.h>
 
-#include <cmath>
 #include <filesystem>
 #include <iostream>
 #include <memory>
+#include <string>
 
 #ifdef __linux__
 #include <sys/types.h>

include/bombfork/prong/components/viewport.h

@@ -169,12 +169,6 @@ class Viewport : public Component {
   PanChangedCallback panCallback;
   SelectionCallback selectionCallback;
 
-  // Scrollbar state
-  bool horizontalScrollbarHover = false;
-  bool verticalScrollbarHover = false;
-  bool horizontalScrollbarDrag = false;
-  bool verticalScrollbarDrag = false;
-
 public:
   explicit Viewport() : Component(nullptr, "Viewport") {
     // Initialize default theme