Martin Rudalics authored
Allow 'mouse-drag-and-drop-region' to move/copy text from one frame to another (Bug#28620). Prevent mouse avoidance mode from interfering with 'mouse-drag-and-drop-region' (Bug#36269). * lisp/avoid.el (mouse-avoidance-ignore-p): Suspend avoidance when 'track-mouse' equals 'dropping'. * lisp/mouse.el (mouse-drag-and-drop-region): Set 'track-mouse' to 'dropping'. Continue reading events also when switching frames. * src/keyboard.c (Finternal_track_mouse): Rename from Ftrack_mouse. (some_mouse_moved): Return NULL also when mouse is not tracked. (show_help_echo, readable_events, kbd_buffer_get_event): Don't check whether mouse is tracked, some_mouse_moved does it now. (track_mouse): Rename variable from do_mouse_tracking. Adjust all users. In doc-string explain meanings of special values 'dragging' and 'dropping'. * src/nsterm.m (ns_mouse_position): During drag and drop consider last mouse frame only when there is no currently focused frame. * src/w32fns.c (w32_wnd_proc): Don't set mouse capture during a drag and drop operation. * src/w32term.c (w32_mouse_position): Track frame under mouse during mouse drag and drop. (mouse_or_wdesc_frame): New function. (w32_read_socket): Call mouse_or_wdesc_frame on mouse events. * src/xdisp.c (define_frame_cursor1): Don't change mouse cursor shape during mouse drag and drop. (syms_of_xdisp): New symbol Qdropping. * src/xterm.c (XTmouse_position): Allow mouse drag and drop move to another frame (mouse_or_wdesc_frame): New function. (handle_one_xevent): Use mouse_or_wdesc_frame for mouse events.