Add support for setting mouse cursor on emscripten.

wolfpld · Sep 20, 2024 · 8b9da2e · 8b9da2e
1 parent 207605f
commit 8b9da2e
Showing 1 changed file with 31 additions and 0 deletions.
diff --git a/profiler/src/BackendEmscripten.cpp b/profiler/src/BackendEmscripten.cpp
@@ -24,6 +24,7 @@ static EGLSurface s_eglSurf;
 static float s_prevScale;
 static int s_width, s_height;
 static uint64_t s_time;
+static const char* s_prevCursor = nullptr;
 
 static ImGuiKey TranslateKeyCode( const char* code )
 {
@@ -272,6 +273,36 @@ void Backend::NewFrame( int& w, int& h )
 
  ImGui_ImplOpenGL3_NewFrame();
 
+ ImGuiMouseCursor cursor = ImGui::GetMouseCursor();
+ const char* cursorName;
+ switch( cursor )
+ {
+ case ImGuiMouseCursor_None: cursorName = "none"; break;
+ case ImGuiMouseCursor_Arrow:
+ switch( s_isBusy() )
+ {
+ default:
+ case 0: cursorName = "default"; break;
+ case 1: cursorName = "progress"; break;
+ case 2: cursorName = "wait"; break;
+ }
+ break;
+ case ImGuiMouseCursor_TextInput: cursorName = "text"; break;
+ case ImGuiMouseCursor_ResizeAll: cursorName = "move"; break;
+ case ImGuiMouseCursor_ResizeNS: cursorName = "ns-resize"; break;
+ case ImGuiMouseCursor_ResizeEW: cursorName = "ew-resize"; break;
+ case ImGuiMouseCursor_ResizeNESW: cursorName = "nesw-resize"; break;
+ case ImGuiMouseCursor_ResizeNWSE: cursorName = "nwse-resize"; break;
+ case ImGuiMouseCursor_Hand: cursorName = "pointer"; break;
+ case ImGuiMouseCursor_NotAllowed: cursorName = "not-allowed"; break;
+ default: cursorName = "auto"; break;
+ };
+ if( s_prevCursor != cursorName )
+ {
+ s_prevCursor = cursorName;
+ EM_ASM_INT( { document.getElementById('canvas').style.cursor = UTF8ToString($0); }, cursorName );
+ }
+
  uint64_t time = std::chrono::duration_cast<std::chrono::microseconds>( std::chrono::high_resolution_clock::now().time_since_epoch() ).count();
  io.DeltaTime = std::min( 0.1f, ( time - s_time ) / 1000000.f );
  s_time = time;