emsc key events

Author: igagis

build/emscripten/conanfile.txt

@@ -1,6 +1,6 @@
 [requires]
-ruis/[>=0.5.278]@cppfw/main
-ruis-render-opengles/[>=0.0.0]@cppfw/main
+ruis/[>=0.6.2]@cppfw/main
+ruis-render-opengles/[>=0.3.1]@cppfw/main
 
 [generators]
 AutotoolsDeps

src/ruisapp/glue/sdl/application.cxx

@@ -88,6 +88,15 @@ app_window* application_glue::get_window(native_window::window_id_type id)
 	return &i->second.get();
 }
 
+app_window* application_glue::get_window()
+{
+	if (this->windows.empty()) {
+		return nullptr;
+	}
+
+	return &this->windows.begin()->second.get();
+}
+
 void application_glue::render()
 {
 	for (auto& w : this->windows) {

src/ruisapp/glue/sdl/application.hxx

@@ -96,6 +96,9 @@ public:
 
 	app_window* get_window(native_window::window_id_type id);
 
+	// get first window if any exists
+	app_window* get_window();
+
 	size_t get_num_windows() const noexcept
 	{
 		return this->windows.size();

src/ruisapp/glue/sdl/glue.cxx

@@ -203,7 +203,15 @@ void main_loop_iteration(void* user_data)
 			case SDL_KEYDOWN:
 				[[fallthrough]];
 			case SDL_KEYUP:
-				if (auto window = glue.get_window(e.key.windowID)) {
+				// utki::logcat("SDL_KEYDOWN/UP event, windowID = ", e.key.windowID, '\n');
+#if CFG_OS_NAME == CFG_OS_NAME_EMSCRIPTEN
+				// In Emscripten all key events are always sent to window with ID 0 (invalid id).
+				// Since we have only one window in Emscripten, we can ignore the window ID.
+				if (auto window = glue.get_window())
+#else
+				if (auto window = glue.get_window(e.key.windowID))
+#endif
+				{
 					auto& win = *window;
 
 					auto key = sdl_scancode_to_ruis_key(e.key.keysym.scancode);
@@ -229,7 +237,23 @@ void main_loop_iteration(void* user_data)
 				}
 				break;
 			case SDL_TEXTINPUT:
-				if (auto window = glue.get_window(e.text.windowID)) {
+				// utki::logcat("SDL_TEXTINPUT event, windowID = ", e.key.windowID, '\n');
+#if CFG_OS_NAME == CFG_OS_NAME_EMSCRIPTEN
+				// In Emscripten all key events are always sent to window with ID 0 (invalid id).
+				// Since we have only one window in Emscripten, we can ignore the window ID.
+				if (auto window = glue.get_window())
+#else
+				if (auto window = glue.get_window(e.text.windowID))
+#endif
+				{
+					// this assert is needed to prevent gcc compiler complaining about unused application_glue::get_window() function in non-Emscripten builds
+					utki::assert(
+						[&]() {
+							return glue.get_window() != nullptr;
+						},
+						SL
+					);
+
 					auto& win = *window;
 
 					struct sdl_input_string_provider : public ruis::gui::input_string_provider {