🤏 [AspectRatio] Scroll on dropdown to switch between items

src/Cool/Image/AspectRatio.cpp

@@ -3,7 +3,7 @@
 #include <regex>
 #include <smart/smart.hpp>
 #include <stringify/stringify.hpp>
-#include "Cool/String/String.h"
+#include "Cool/ImGui/ImGuiExtras.h"
 
 namespace Cool {
 
@@ -74,15 +74,16 @@ auto AspectRatio::imgui(float width, const char* label) -> bool
     bool b = false;
 
     static const auto ratios = std::array{
-        std::make_pair("  A4 Horizontal ", std::sqrt(2.f)),
+        // Sorted from biggest to smallest
         std::make_pair("     16 / 9     ", 16.f / 9.f),
         std::make_pair("      3 / 2     ", 3.f / 2.f),
+        std::make_pair("  A4 Horizontal ", std::sqrt(2.f)),
         std::make_pair("      4 / 3     ", 4.f / 3.f),
         std::make_pair("      1 / 1     ", 1.f),
+        std::make_pair("      3 / 4     ", 3.f / 4.f),
         std::make_pair("   A4 Vertical  ", 1.f / std::sqrt(2.f)),
-        std::make_pair("      9 / 16    ", 9.f / 16.f),
         std::make_pair("      2 / 3     ", 2.f / 3.f),
-        std::make_pair("      3 / 4     ", 3.f / 4.f),
+        std::make_pair("      9 / 16    ", 9.f / 16.f),
     };
 
     ImGui::SetNextItemWidth(
@@ -100,6 +101,7 @@ auto AspectRatio::imgui(float width, const char* label) -> bool
     {
         _input = string_from_ratio(_ratio);
     }
+    bool const input_text_is_hovered = ImGui::IsItemHovered();
 
     ImGui::SameLine(0.f, 0.f);
 
@@ -116,6 +118,22 @@ auto AspectRatio::imgui(float width, const char* label) -> bool
         ImGui::EndCombo();
     }
 
+    if ((input_text_is_hovered || ImGui::IsItemHovered()) && ImGui::GetIO().MouseWheel != 0.f)
+    {
+        bool const find_bigger = ImGui::GetIO().MouseWheel > 0.f;
+        int const  sz          = ratios.size();
+        for (int i = find_bigger ? sz - 1 : 0; find_bigger ? (i >= 0) : (i < sz); i += find_bigger ? -1 : 1)
+        {
+            float const ratio = ratios.at(i).second;
+            if (find_bigger ? (ratio > _ratio) : (ratio < _ratio))
+            {
+                set(ratio);
+                b = true;
+                break;
+            }
+        }
+    }
+
     return b;
 }