Backends: OSX: Fixed scroll wheel scaling for devices emitting events with hasPreciseScrollingDeltas==false (e.g. non-Apple mices).

Ref #4019 for details provided in .XLS sheet, although not strictly related to main issue topic.
+ Rename Emscripten demo titles to make SDL visible.

backends/imgui_impl_glut.cpp

@@ -9,6 +9,7 @@
 //  [X] Platform: Partial keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLUT values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
 // Issues:
 //  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing horizontal mouse wheel support.
 //  [ ] Platform: Missing mouse cursor shape/visibility support.
 //  [ ] Platform: Missing clipboard support (not supported by Glut).
 //  [ ] Platform: Missing gamepad support.

backends/imgui_impl_glut.h

@@ -9,6 +9,7 @@
 //  [X] Platform: Partial keyboard support. Since 1.87 we are using the io.AddKeyEvent() function. Pass ImGuiKey values to all key functions e.g. ImGui::IsKeyPressed(ImGuiKey_Space). [Legacy GLUT values will also be supported unless IMGUI_DISABLE_OBSOLETE_KEYIO is set]
 // Issues:
 //  [ ] Platform: GLUT is unable to distinguish e.g. Backspace from CTRL+H or TAB from CTRL+I
+//  [ ] Platform: Missing horizontal mouse wheel support.
 //  [ ] Platform: Missing mouse cursor shape/visibility support.
 //  [ ] Platform: Missing clipboard support (not supported by Glut).
 //  [ ] Platform: Missing gamepad support.

backends/imgui_impl_osx.mm

@@ -24,6 +24,7 @@
 
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
+//  2023-02-01: Fixed scroll wheel scaling for devices emitting events with hasPreciseScrollingDeltas==false (e.g. non-Apple mices).
 //  2022-11-02: Fixed mouse coordinates before clicking the host window.
 //  2022-10-06: Fixed mouse inputs on flipped views.
 //  2022-09-26: Inputs: Renamed ImGuiKey_ModXXX introduced in 1.87 to ImGuiMod_XXX (old names still supported).
@@ -671,18 +672,18 @@ static bool ImGui_ImplOSX_HandleEvent(NSEvent* event, NSView* view)
             wheel_dy = [event scrollingDeltaY];
             if ([event hasPreciseScrollingDeltas])
             {
-                wheel_dx *= 0.1;
-                wheel_dy *= 0.1;
+                wheel_dx *= 0.01;
+                wheel_dy *= 0.01;
             }
         }
         else
         #endif // MAC_OS_X_VERSION_MAX_ALLOWED
         {
-            wheel_dx = [event deltaX];
-            wheel_dy = [event deltaY];
+            wheel_dx = [event deltaX] * 0.1;
+            wheel_dy = [event deltaY] * 0.1;
         }
         if (wheel_dx != 0.0 || wheel_dy != 0.0)
-            io.AddMouseWheelEvent((float)wheel_dx * 0.1f, (float)wheel_dy * 0.1f);
+            io.AddMouseWheelEvent((float)wheel_dx, (float)wheel_dy);
 
         return io.WantCaptureMouse;
     }

docs/CHANGELOG.txt

@@ -59,6 +59,8 @@ All changes:
 - Misc: Tolerate zero delta-time under Emscripten as backends are imprecise in their
   values for io.DeltaTime, and browser features such as "privacy.resistFingerprinting=true"
   can exacerbate that. (#6114, #3644)
+- Backends: OSX: Fixed scroll/wheel scaling for devices emitting events with
+  hasPreciseScrollingDeltas==false (e.g. non-Apple mices).
 - Backend: WebGPU: Fix building for latest WebGPU specs (remove implicit layout generation).
   (#6117, #4116, #3632) [@tonygrue, @bfierz]
 - Examples: Win32: Fixed examples using RegisterClassW() since 1.89 to also call

examples/example_emscripten_opengl3/Makefile

@@ -1,5 +1,5 @@
 #
-# Makefile to use with emscripten
+# Makefile to use with SDL+emscripten
 # See https://emscripten.org/docs/getting_started/downloads.html
 # for installation instructions.
 #

examples/example_emscripten_opengl3/main.cpp

@@ -49,7 +49,7 @@ int main(int, char**)
     SDL_DisplayMode current;
     SDL_GetCurrentDisplayMode(0, &current);
     SDL_WindowFlags window_flags = (SDL_WindowFlags)(SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
-    g_Window = SDL_CreateWindow("Dear ImGui Emscripten example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
+    g_Window = SDL_CreateWindow("Dear ImGui SDL+Emscripten example", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1280, 720, window_flags);
     g_GLContext = SDL_GL_CreateContext(g_Window);
     if (!g_GLContext)
     {

examples/example_emscripten_opengl3/shell_minimal.html

@@ -3,7 +3,7 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, minimum-scale=1, user-scalable=no"/>
-    <title>Dear ImGui Emscripten example</title>
+    <title>Dear ImGui SDL+Emscripten example</title>
     <style>
         body { margin: 0; background-color: black }
         .emscripten {