Started working on dnd for toxic

2025-07-03 15:06:45 +02:00 · 2014-10-01 23:28:34 +02:00
parent a01cc35368
commit 50c7942cb5
5 changed files with 170 additions and 44 deletions
--- a/src/xtra.c
+++ b/src/xtra.c
@ -0,0 +1,132 @@
+#include "xtra.h"
+
+#include <X11/Xlib.h>
+#include <X11/Xatom.h>
+// #include <X11/X.h>
+// #include <X11/Xutil.h>
+
+#include <pthread.h>
+#include <assert.h>
+
+static Display *the_d = NULL;
+static Window self_window; /* We will assume that during initialization
+                            * we have this window focused */
+
+/* For dnd protocol NOTE: copied from utox's code */
+Atom XdndAware, 
+     XdndEnter, 
+     XdndLeave, 
+     XdndPosition, 
+     XdndStatus, 
+     XdndDrop, 
+     XdndSelection, 
+     XdndDATA, 
+     XdndActionCopy;
+
+void *event_loop(void* p)
+{
+    (void) p;
+    
+    XEvent event;
+    while (the_d)
+    {
+        XNextEvent(the_d, &event);
+        
+        switch (event.type)
+        {
+            case ClientMessage:
+            {
+                
+                assert(0);
+                if(event.xclient.message_type == XdndEnter) {
+                } else if(event.xclient.message_type == XdndPosition) {
+                    Window src = event.xclient.data.l[0];
+                    XEvent event = {
+                        .xclient = {
+                            .type = ClientMessage,
+                            .display = the_d,
+                            .window = src,
+                            .message_type = XdndStatus,
+                            .format = 32,
+                            .data = {
+                                .l = {self_window, 1, 0, 0, XdndActionCopy}
+                            }
+                        }
+                    };
+                    XSendEvent(the_d, src, 0, 0, &event);
+                } else if(event.xclient.message_type == XdndStatus) {
+                } else if(event.xclient.message_type == XdndDrop) {
+                    XConvertSelection(the_d, XdndSelection, XA_STRING, XdndDATA, self_window, CurrentTime);
+                } else if(event.xclient.message_type == XdndLeave) {
+                } else {
+                }
+                
+                goto exit;
+            } break;
+            
+            default:
+                break;
+        }
+    }
+    
+exit:
+    /* Actual XTRA termination 
+     * Please call xtra_terminate() at exit
+     * otherwise bad stuff happens
+     */
+    if (the_d) XCloseDisplay(the_d);
+    return NULL;
+}
+
+void xtra_init()
+{
+    the_d = XOpenDisplay(NULL);
+    self_window = xtra_focused_window_id();
+    
+    XSelectInput(the_d, self_window, ExposureMask | ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask |
+    PointerMotionMask | StructureNotifyMask | KeyPressMask | KeyReleaseMask | FocusChangeMask |
+    PropertyChangeMask);
+
+    XdndAware = XInternAtom(the_d, "XdndAware", False);
+    XdndEnter = XInternAtom(the_d, "XdndEnter", False);
+    XdndLeave = XInternAtom(the_d, "XdndLeave", False);
+    XdndPosition = XInternAtom(the_d, "XdndPosition", False);
+    XdndStatus = XInternAtom(the_d, "XdndStatus", False);
+    XdndDrop = XInternAtom(the_d, "XdndDrop", False);
+    XdndSelection = XInternAtom(the_d, "XdndSelection", False);
+    XdndDATA = XInternAtom(the_d, "XdndDATA", False);
+    XdndActionCopy = XInternAtom(the_d, "XdndActionCopy", False);
+    
+    Atom Xdndversion = 3;
+    XChangeProperty(the_d, self_window, XdndAware, XA_ATOM, 32, 0, (unsigned char*)&Xdndversion, 1);
+    /*XSelectInput(the_d, self_window, ExposureMask | ButtonPressMask | ButtonReleaseMask | EnterWindowMask | LeaveWindowMask | PointerMotionMask | StructureNotifyMask | KeyPressMask | KeyReleaseMask);*/
+    pthread_t id;
+    pthread_create(&id, NULL, event_loop, NULL);
+    pthread_detach(id);
+}
+
+void xtra_terminate()
+{
+    XEvent terminate_event;
+    terminate_event.xclient.display = the_d;
+    terminate_event.type = ClientMessage;
+    
+    
+    XDeleteProperty(the_d, self_window, XdndAware);
+    XSendEvent(the_d, self_window, 0, NoEventMask, &terminate_event);
+}
+
+long unsigned int xtra_focused_window_id()
+{
+    if (!the_d) return 0;
+    
+    Window focus;
+    int revert;
+    XGetInputFocus(the_d, &focus, &revert);
+    return focus;
+}
+
+int xtra_is_this_focused()
+{
+    return self_window == xtra_focused_window_id();
+}