input-capture: send modifiers (highly experimental)

src/core/PortalManager.cpp

@@ -22,6 +22,7 @@ SOutput::SOutput(SP<CCWlOutput> output_) : output(output_) {
         refreshRate = refresh;
         width       = width_;
         height      = height_;
+		Debug::log(LOG, "??? {} {}", flags, refresh);
     });
     output->setGeometry(
         [this](CCWlOutput* r, int32_t x_, int32_t y_, int32_t physical_width, int32_t physical_height, int32_t subpixel, const char* make, const char* model, int32_t transform_) {

src/portals/InputCapture.cpp

@@ -28,6 +28,10 @@ CInputCapturePortal::CInputCapturePortal(SP<CCHyprlandInputCaptureManagerV1> mgr
         onKeymap(format == HYPRLAND_INPUT_CAPTURE_MANAGER_V1_KEYMAP_FORMAT_XKB_V1 ? fd : 0, size);
     });
 
+    mgr->setModifiers([this](CCHyprlandInputCaptureManagerV1* r, uint32_t mods_depressed, uint32_t mods_latched, uint32_t mods_locked, uint32_t group) {
+        onModifiers(mods_depressed, mods_latched, mods_locked, group);
+    });
+
     mgr->setKey([this](CCHyprlandInputCaptureManagerV1* r, uint32_t key, hyprlandInputCaptureManagerV1KeyState state) { onKey(key, state); });
 
     mgr->setButton([this](CCHyprlandInputCaptureManagerV1* r, uint32_t button, hyprlandInputCaptureManagerV1ButtonState state) { onButton(button, state); });
@@ -321,6 +325,11 @@ void CInputCapturePortal::onKey(uint32_t id, bool pressed) {
         value->key(id, pressed);
 }
 
+void CInputCapturePortal::onModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group) {
+    for (const auto& [key, value] : sessions)
+        value->modifiers(modsDepressed, modsLatched, modsLocked, group);
+}
+
 void CInputCapturePortal::onKeymap(int32_t fd, uint32_t size) {
     keymap.fd   = fd;
     keymap.size = size;
@@ -475,6 +484,13 @@ void CInputCapturePortal::SSession::key(uint32_t key, bool pressed) {
     eis->sendKey(key, pressed);
 }
 
+void CInputCapturePortal::SSession::modifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group) {
+    if (status != ACTIVATED)
+        return;
+
+    eis->sendModifiers(modsDepressed, modsLatched, modsLocked, group);
+}
+
 void CInputCapturePortal::SSession::button(uint32_t button, bool pressed) {
     if (status != ACTIVATED)
         return;

src/portals/InputCapture.hpp

@@ -36,6 +36,7 @@ class CInputCapturePortal {
     void          onMotion(double x, double y, double dx, double dy);
     void          onKeymap(int32_t fd, uint32_t size);
     void          onKey(uint32_t key, bool pressed);
+    void 	  onModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group);
     void          onButton(uint32_t button, bool pressed);
     void          onAxis(bool axis, double value);
     void          onAxisValue120(bool axis, int32_t value120);
@@ -66,6 +67,7 @@ class CInputCapturePortal {
 
         void     motion(double dx, double dy);
         void     key(uint32_t key, bool pressed);
+        void     modifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group);
         void     keymap(Keymap keymap);
         void     button(uint32_t button, bool pressed);
         void     axis(bool axis, double value);

src/shared/Eis.cpp

@@ -269,6 +269,14 @@ void EmulatedInputServer::sendKey(uint32_t key, bool pressed) {
     eis_device_frame(client.keyboard, now);
 }
 
+void EmulatedInputServer::sendModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group) {
+    if (!client.keyboard)
+        return;
+    uint64_t now = eis_now(eisCtx);
+	eis_device_keyboard_send_xkb_modifiers(client.keyboard, modsDepressed, modsLatched, modsLocked, group);
+    eis_device_frame(client.keyboard, now);
+}
+
 void EmulatedInputServer::sendButton(uint32_t button, bool pressed) {
     if (!client.pointer)
         return;

src/shared/Eis.hpp

@@ -23,6 +23,7 @@ class EmulatedInputServer {
 
     void        sendMotion(double x, double y);
     void        sendKey(uint32_t key, bool pressed);
+    void        sendModifiers(uint32_t modsDepressed, uint32_t modsLatched, uint32_t modsLocked, uint32_t group);
     void        sendButton(uint32_t button, bool pressed);
     void        sendScrollDelta(double x, double y);
     void        sendScrollDiscrete(int32_t x, int32_t y);