added drag and drop functionality

barebones but functioning

README.md

@@ -29,7 +29,6 @@ Nevertheless, REPORT any you find! Make an issue!
  - Blur
  - Fadein/out
  - Window rules
- - Drag and drop
  - Fix electron rendering issues
  - Fix sloppy dragging of windows
  - Optimization

src/Compositor.cpp

@@ -5,6 +5,8 @@ CCompositor::CCompositor() {
     unlink("/tmp/hypr/hyprlandd.log");
     unlink("/tmp/hypr/.hyprlandrq");
 
+    system("mkdir -p /tmp/hypr");
+
     m_sWLDisplay = wl_display_create();
 
     m_sWLRBackend = wlr_backend_autocreate(m_sWLDisplay);
@@ -88,6 +90,7 @@ void CCompositor::initAllSignals() {
     wl_signal_add(&m_sWLRBackend->events.new_input, &Events::listen_newInput);
     wl_signal_add(&m_sWLRSeat->events.request_set_cursor, &Events::listen_requestMouse);
     wl_signal_add(&m_sWLRSeat->events.request_set_selection, &Events::listen_requestSetSel);
+    wl_signal_add(&m_sWLRSeat->events.request_start_drag, &Events::listen_requestDrag);
     wl_signal_add(&m_sWLRLayerShell->events.new_surface, &Events::listen_newLayerSurface);
     wl_signal_add(&m_sWLROutputLayout->events.change, &Events::listen_change);
     wl_signal_add(&m_sWLROutputMgr->events.apply, &Events::listen_outputMgrApply);

src/events/Events.hpp

@@ -81,4 +81,8 @@ namespace Events {
     // XWayland
     LISTENER(readyXWayland);
     LISTENER(surfaceXWayland);
+
+    // Drag & Drop
+    LISTENER(requestDrag);
+    LISTENER(startDrag);
 };

src/events/Misc.cpp

@@ -64,3 +64,19 @@ void Events::listener_readyXWayland(wl_listener* listener, void* data) {
 
     xcb_disconnect(XCBCONNECTION);
 }
+
+void Events::listener_requestDrag(wl_listener* listener, void* data) {
+    const auto E = (wlr_seat_request_start_drag_event*)data;
+
+    if (!wlr_seat_validate_pointer_grab_serial(g_pCompositor->m_sWLRSeat, E->origin, E->serial)) {
+        Debug::log(LOG, "Ignoring drag and drop request: serial mismatch.");
+        wlr_data_source_destroy(E->drag->source);
+        return;
+    }
+
+    wlr_seat_start_pointer_drag(g_pCompositor->m_sWLRSeat, E->drag, E->serial);
+}
+
+void Events::listener_startDrag(wl_listener* listener, void* data) {
+    // TODO: draw the drag icon
+}

src/render/Renderer.cpp

@@ -315,7 +315,7 @@ void CHyprRenderer::arrangeLayerArray(SMonitor* pMonitor, const std::list<SLayer
 
         wlr_layer_surface_v1_configure(ls->layerSurface, box.width, box.height);
 
-        Debug::log(LOG, "LayerSurface %x arranged: x: %i y: %i w: %i h: %i", &ls, box.x, box.y, box.width, box.height);
+        Debug::log(LOG, "LayerSurface %x arranged: x: %i y: %i w: %i h: %i with margins: t: %i l: %i r: %i b: %i", &ls, box.x, box.y, box.width, box.height, PSTATE->margin.top, PSTATE->margin.left, PSTATE->margin.right, PSTATE->margin.bottom);
     }
 }