Add portal interface to support SDL_GetSystemTheme in linux

src/video/wayland/SDL_waylandevents.c

@@ -26,6 +26,7 @@
 #include "../../core/unix/SDL_poll.h"
 #include "../../events/SDL_events_c.h"
 #include "../../events/SDL_scancode_tables_c.h"
+#include "../../core/linux/SDL_system_theme.h"
 #include "../SDL_sysvideo.h"
 
 #include "SDL_waylandvideo.h"
@@ -386,6 +387,10 @@ int Wayland_WaitEventTimeout(_THIS, Sint64 timeoutNS)
     }
 #endif
 
+#ifdef SDL_USE_LIBDBUS
+    SDL_SystemTheme_PumpEvents();
+#endif
+
     /* If key repeat is active, we'll need to cap our maximum wait time to handle repeats */
     if (input && keyboard_repeat_is_set(&input->keyboard_repeat)) {
         const Uint64 elapsed = SDL_GetTicksNS() - input->keyboard_repeat.sdl_press_time_ns;
@@ -455,6 +460,10 @@ void Wayland_PumpEvents(_THIS)
     }
 #endif
 
+#ifdef SDL_USE_LIBDBUS
+    SDL_SystemTheme_PumpEvents();
+#endif
+
 #ifdef HAVE_LIBDECOR_H
     if (d->shell.libdecor) {
         libdecor_dispatch(d->shell.libdecor, 0);

src/video/wayland/SDL_waylandvideo.c

@@ -24,6 +24,7 @@
 #if SDL_VIDEO_DRIVER_WAYLAND
 
 #include "../../events/SDL_events_c.h"
+#include "../../core/linux/SDL_system_theme.h"
 
 #include "SDL_waylandvideo.h"
 #include "SDL_waylandevents_c.h"
@@ -249,6 +250,11 @@ static SDL_VideoDevice *Wayland_CreateDevice(void)
     device->FlashWindow = Wayland_FlashWindow;
     device->HasScreenKeyboardSupport = Wayland_HasScreenKeyboardSupport;
 
+#ifdef SDL_USE_LIBDBUS
+    if (SDL_SystemTheme_Init())
+        device->system_theme = SDL_SystemTheme_Get();
+#endif
+
     device->SetClipboardText = Wayland_SetClipboardText;
     device->GetClipboardText = Wayland_GetClipboardText;
     device->HasClipboardText = Wayland_HasClipboardText;

src/video/x11/SDL_x11events.c

@@ -36,6 +36,7 @@
 #include "../../events/SDL_events_c.h"
 #include "../../events/SDL_mouse_c.h"
 #include "../../events/SDL_touch_c.h"
+#include "../../core/linux/SDL_system_theme.h"
 
 #include <SDL3/SDL_syswm.h>
 
@@ -1683,6 +1684,10 @@ int X11_WaitEventTimeout(_THIS, Sint64 timeoutNS)
         SDL_IME_PumpEvents();
     }
 #endif
+
+#ifdef SDL_USE_LIBDBUS
+    SDL_SystemTheme_PumpEvents();
+#endif
     return 1;
 }
 
@@ -1725,6 +1730,10 @@ void X11_PumpEvents(_THIS)
     }
 #endif
 
+#ifdef SDL_USE_LIBDBUS
+    SDL_SystemTheme_PumpEvents();
+#endif
+
     /* FIXME: Only need to do this when there are pending focus changes */
     X11_HandleFocusChanges(_this);
 

src/video/x11/SDL_x11video.c

@@ -26,6 +26,7 @@
 
 #include "../SDL_sysvideo.h"
 #include "../SDL_pixels_c.h"
+#include "../../core/linux/SDL_system_theme.h"
 
 #include "SDL_x11video.h"
 #include "SDL_x11framebuffer.h"
@@ -315,6 +316,11 @@ static SDL_VideoDevice *X11_CreateDevice(void)
     device->Vulkan_CreateSurface = X11_Vulkan_CreateSurface;
 #endif
 
+#ifdef SDL_USE_LIBDBUS
+    if (SDL_SystemTheme_Init())
+        device->system_theme = SDL_SystemTheme_Get();
+#endif
+
     return device;
 }