/usr/share/common-lisp/source/mcclim/Backends/gtkairo/event.lisp is in cl-mcclim 0.9.6.dfsg.cvs20100315-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;;; (c) 2006 David Lichteblau (david@lichteblau.com)
;;; This library is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU Library General Public
;;; License as published by the Free Software Foundation; either
;;; version 2 of the License, or (at your option) any later version.
;;;
;;; This library is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; Library General Public License for more details.
;;;
;;; You should have received a copy of the GNU Library General Public
;;; License along with this library; if not, write to the
;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;;; Boston, MA 02111-1307 USA.
(in-package :clim-gtkairo)
;;; Locking rule for this file: The entire event loop grabs the GTK
;;; lock, individual callees don't.
(defvar *keys* (make-hash-table))
(defmacro define-key (name &rest clauses)
`(setf (gethash ,name *keys*) ',clauses))
(defun connect-signal (widget name sym)
(g-signal-connect widget name (cffi:get-callback sym)))
(defun connect-signals (widget)
(gtk_widget_add_events widget
(logior GDK_POINTER_MOTION_MASK
GDK_BUTTON_PRESS_MASK
GDK_BUTTON_RELEASE_MASK
GDK_KEY_PRESS_MASK
GDK_KEY_RELEASE_MASK
GDK_ENTER_NOTIFY_MASK
GDK_LEAVE_NOTIFY_MASK
#+nil GDK_STRUCTURE_MASK))
(setf (gtkwidget-flags widget)
(logior (gtkwidget-flags widget) GTK_CAN_FOCUS))
(connect-signal widget "expose-event" 'expose-handler)
(connect-signal widget "motion-notify-event" 'motion-notify-handler)
(connect-signal widget "button-press-event" 'button-handler)
(connect-signal widget "button-release-event" 'button-handler)
(connect-signal widget "key-press-event" 'key-handler)
(connect-signal widget "key-release-event" 'key-handler)
(connect-signal widget "enter-notify-event" 'enter-handler)
(connect-signal widget "leave-notify-event" 'leave-handler)
(connect-signal widget "configure-event" 'configure-handler)
;; override gtkwidget's focus handlers, which trigger an expose event,
;; causing unnecessary redraws for mouse movement
(connect-signal widget "focus-in-event" 'noop-handler)
(connect-signal widget "focus-out-event" 'noop-handler))
(defun connect-window-signals (widget)
(gtk_widget_add_events widget (logior GDK_STRUCTURE_MASK
GDK_SUBSTRUCTURE_MASK))
(connect-signal widget "configure-event" 'configure-handler)
(connect-signal widget "delete-event" 'delete-handler)
(connect-signal widget "destroy-event" 'destroy-handler))
(defvar *port*)
(defun enqueue (event &optional (port *port*))
;;; (tr event)
;;; (tr (event-sheet event))
(push event (cdr (events-tail port)))
(pop (events-tail port))
event)
(defun tr (&rest x)
(when x
(format *trace-output* "~&~A~&" x)
(finish-output *trace-output*))
x)
(defun dequeue (port)
(with-gtk () ;let's simply use the gtk lock here
(let ((c (cdr (events-head port))))
(when c
(pop (events-head port))
(car c)))))
(defun dribble-x-errors ()
#-(or win32 windows mswindows)
(let ((code (gdk_error_trap_pop)))
(unless (zerop code)
(warn "Ignoring X error ~D: ~A"
code
(cffi:with-foreign-pointer-as-string (buf 64)
(XGetErrorText *gdk-display* code buf 63))))
(gdk_error_trap_push)))
;; thread-safe entry function
(defun gtk-main-iteration (port &optional block)
(with-gtk ()
(let ((*port* port))
(if block
(gtk_main_iteration_do 1)
(while (plusp (gtk_events_pending))
(gtk_main_iteration_do 0))))
(dribble-x-errors)))
(defmethod get-next-event
((port gtkairo-port) &key wait-function (timeout nil))
(declare (ignore wait-function))
#-clim-mp (port-force-output port)
(gtk-main-iteration port)
(cond
((dequeue port))
(t
#+clim-gtkairo::do-not-block-in-ffi
(sb-sys:wait-until-fd-usable (gdk-xlib-fd) :input 0.1)
#+cmu (mp:process-yield)
(gtk-main-iteration port #-clim-gtkairo::do-not-block-in-ffi t)
(dequeue port))))
(defmacro define-signal (name+options (widget event &rest args) &body body)
(destructuring-bind (name &key (return-type :void))
(if (listp name+options)
name+options
(list name+options))
(let ((impl (intern (concatenate 'string (symbol-name name) "-IMPL")))
(args (if (symbolp event)
`((,event :pointer) ,@args)
(cons event args))))
;; jump through a trampoline so that C-M-x works without having to
;; restart:
`(progn
(defun ,impl (,widget ,@(mapcar #'car args))
,@body)
(cffi:defcallback ,name ,return-type
((widget :pointer) ,@args (data :pointer))
data
(,impl widget ,@(mapcar #'car args)))))))
(define-signal noop-handler (widget event))
(define-signal expose-handler (widget event)
(let* ((sheet (widget->sheet widget *port*))
(mirror (climi::port-lookup-mirror *port* sheet)))
(unless
;; fixme: this shouldn't happen
(typep mirror 'drawable-mirror)
(if (buffering-pixmap-dirty-p mirror)
(cffi:with-foreign-slots ((x y width height) event gdkeventexpose)
(if (mirror-buffering-pixmap mirror)
(setf (buffering-pixmap-dirty-p mirror) nil)
(gdk_window_clear_area (gtkwidget-gdkwindow widget)
x y
width height))
(enqueue
(make-instance 'window-repaint-event
:timestamp (get-internal-real-time)
:sheet (widget->sheet widget *port*)
:region (make-rectangle* x y (+ x width) (+ y height)))))
(cffi:with-foreign-slots ((x y width height) event gdkeventexpose)
(let* ((from (mirror-buffering-pixmap mirror))
(to (gtkwidget-gdkwindow (mirror-widget mirror)))
(gc (gdk_gc_new to)))
(gdk_draw_drawable to gc from x y x y width height)
(gdk_gc_unref gc)))))))
(defun gdkmodifiertype->modifier-state (state)
(logior
(if (logtest GDK_SHIFT_MASK state) +shift-key+ 0)
(if (logtest GDK_CONTROL_MASK state) +control-key+ 0)
(if (logtest GDK_MOD1_MASK state) +meta-key+ 0)
;; (if (logtest GDK_MOD2_MASK state) +super-key+ 0)
;; (if (logtest GDK_MOD3_MASK state) +hyper-key+ 0)
;;; (if (logtest GDK_MOD4_MASK state) ??? 0)
;;; (if (logtest GDK_MOD5_MASK state) ??? 0)
;;; (if (logtest GDK_LOCK_MASK state) ??? 0)
))
(defun gdkmodifiertype->one-button (state)
(cond
((logtest GDK_BUTTON1_MASK state) +pointer-left-button+)
((logtest GDK_BUTTON2_MASK state) +pointer-middle-button+)
((logtest GDK_BUTTON3_MASK state) +pointer-right-button+)
((logtest GDK_BUTTON4_MASK state) +pointer-wheel-up+)
((logtest GDK_BUTTON5_MASK state) +pointer-wheel-down+)
(t nil)))
(defun gdkmodifiertype->all-buttons (state)
(logior
(if (logtest GDK_BUTTON1_MASK state) +pointer-left-button+ 0)
(if (logtest GDK_BUTTON2_MASK state) +pointer-middle-button+ 0)
(if (logtest GDK_BUTTON3_MASK state) +pointer-right-button+ 0)
(if (logtest GDK_BUTTON4_MASK state) +pointer-wheel-up+ 0)
(if (logtest GDK_BUTTON5_MASK state) +pointer-wheel-down+ 0)))
(define-signal motion-notify-handler (widget event)
(gtk_widget_grab_focus widget)
(enqueue
(cffi:with-foreign-slots
((state x y x_root y_root time) event gdkeventmotion)
(make-instance 'pointer-motion-event
:timestamp time
:pointer 0
:button (gdkmodifiertype->one-button state)
:x (truncate x)
:y (truncate y)
:graft-x (truncate x_root)
:graft-y (truncate y_root)
:sheet (widget->sheet widget *port*)
:modifier-state (gdkmodifiertype->modifier-state state)))))
(defun state-without-buttons (state)
(logand state (1- GDK_BUTTON1_MASK)))
;; aus CLIM-CLX geklaut:
(defconstant +clim-modifiers+ '(((:meta-left :meta-right) #.+meta-key+)
((:hyper-left :hyper-right) #.+hyper-key+)
((:super-left :super-right) #.+super-key+)
((:shift-left :shift-right) #.+shift-key+)
((:control-left :control-right)
#.+control-key+)))
(defun modify-modifiers (type keysym-keyword modifiers)
(let ((keysym-modifier (loop for (keysyms modifier) in +clim-modifiers+
if (member keysym-keyword keysyms)
return modifier)))
(cond ((and keysym-modifier (eql type GDK_KEY_PRESS))
(logior modifiers keysym-modifier))
((and keysym-modifier (eql type GDK_KEY_RELEASE))
(logandc2 modifiers keysym-modifier))
(t modifiers))))
(define-signal key-handler (widget event)
(let ((sheet (widget->sheet widget *port*)))
(multiple-value-bind (root-x root-y)
(%gdk-display-get-pointer)
(multiple-value-bind (x y)
(mirror-pointer-position (sheet-direct-mirror sheet))
(cffi:with-foreign-slots
((type time state keyval string length) event gdkeventkey)
(let ((state (state-without-buttons state))
(modifier-state (gdkmodifiertype->modifier-state state)))
(let ((clauses (gethash keyval *keys*))
sym char)
(loop
for (st sy ch) in clauses
when (or (eql st t) (find state st))
do
(setf sym sy)
(setf char ch)
(return))
(unless char
(setf modifier-state
(modify-modifiers type sym modifier-state)))
(unless (eq sym 'throw-away)
(enqueue
(make-instance (if (eql type GDK_KEY_PRESS)
'key-press-event
'key-release-event)
:key-name sym
:key-character char
:x x
:y y
:graft-x root-x
:graft-y root-y
:sheet sheet
:modifier-state modifier-state
:timestamp time))))))))))
(defvar *last-seen-button* 3)
(defgeneric handle-event-p (sheet event))
(defmethod handle-event-p (sheet event)
t)
(define-signal (button-handler :return-type :int) (widget event)
(cffi:with-foreign-slots
((type time button state x y x_root y_root) event gdkeventbutton)
(when (eql type GDK_BUTTON_PRESS)
;; Hack alert: Menus don't work without this.
(gdk_pointer_ungrab GDK_CURRENT_TIME))
(setf *last-seen-button* button)
(let* ((sheet (widget->sheet widget *port*))
(event
(make-instance (if (eql type GDK_BUTTON_PRESS)
'pointer-button-press-event
'pointer-button-release-event)
:pointer 0
:button (ecase button
(1 +pointer-left-button+)
(2 +pointer-middle-button+)
(3 +pointer-right-button+)
(4 +pointer-wheel-up+)
(5 +pointer-wheel-down+))
:x (truncate x)
:y (truncate y)
:graft-x (truncate x_root)
:graft-y (truncate y_root)
:sheet sheet
:modifier-state (gdkmodifiertype->modifier-state state)
:timestamp time)))
(cond
((handle-event-p sheet event)
(enqueue event)
1)
(t
0)))))
(define-signal (tab-button-handler :return-type :int) (widget event)
(cffi:with-foreign-slots
((type time button state x y x_root y_root) event gdkeventbutton)
(when (eql type GDK_BUTTON_PRESS)
;; Hack alert: Menus don't work without this.
(gdk_pointer_ungrab GDK_CURRENT_TIME))
(setf *last-seen-button* button)
(let ((page (widget->sheet widget *port*)))
(enqueue (make-instance
(if (eql type GDK_BUTTON_PRESS)
'tab-press-event
'tab-release-event)
:button (ecase button
(1 +pointer-left-button+)
(2 +pointer-middle-button+)
(3 +pointer-right-button+)
(4 +pointer-wheel-up+)
(5 +pointer-wheel-down+))
:page page
:sheet (clim-tab-layout:tab-page-tab-layout page)))))
1)
(define-signal enter-handler (widget event)
(cffi:with-foreign-slots
((time state x y x_root y_root) event gdkeventcrossing)
;; The frontend sets p-p-s for us, but apparently that sometimes
;; happens too late, leaving NIL in the slot. Test case is the Drag and
;; Drop demo. (Even weirder: Starting it from demodemo for a second time
;; makes the problem go away, only the first invocation has this problem.)
(setf (climi::port-pointer-sheet *port*) (widget->sheet widget *port*))
(enqueue
(make-instance 'pointer-enter-event
:pointer 0
:button (gdkmodifiertype->all-buttons state)
:x x
:y y
:graft-x x_root
:graft-y y_root
:sheet (widget->sheet widget *port*)
:modifier-state (gdkmodifiertype->modifier-state state)
:timestamp time))))
(define-signal leave-handler (widget event)
(cffi:with-foreign-slots
((time state x y x_root y_root gdkcrossingmode) event gdkeventcrossing)
(enqueue
(make-instance (if (eql gdkcrossingmode GDK_CROSSING_UNGRAB)
'climi::pointer-ungrab-event
'pointer-exit-event)
:pointer 0
:button (gdkmodifiertype->all-buttons state)
:x x
:y y
:graft-x x_root
:graft-y y_root
:sheet (widget->sheet widget *port*)
:modifier-state (gdkmodifiertype->modifier-state state)
:timestamp time))))
(define-signal configure-handler (widget event)
(cffi:with-foreign-slots ((x y width height) event gdkeventconfigure)
(let ((sheet (widget->sheet widget *port*)))
(when sheet ;FIXME
(enqueue
(if (eq (sheet-parent sheet) (graft sheet))
(cffi:with-foreign-object (&x :int)
(cffi:with-foreign-object (&y :int)
;; FIXME: Does this actually change anything about decoration
;; handling?
(gdk_window_get_root_origin (gtkwidget-gdkwindow widget) &x &y)
(make-instance 'window-configuration-event
:sheet sheet
:x (cffi:mem-aref &x :int)
:y (cffi:mem-aref &y :int)
:width width
:height height)))
(make-instance 'window-configuration-event
:sheet sheet
:x x
:y y
:width width
:height height)))))))
(define-signal delete-handler (widget event)
(enqueue
(make-instance 'clim:window-manager-delete-event
:sheet (widget->sheet widget *port*))))
(define-signal destroy-handler (widget event)
(enqueue
(make-instance 'climi::window-destroy-event
:sheet (widget->sheet widget *port*))))
;; native widget handlers:
(define-signal magic-clicked-handler (widget event)
(declare (ignore event))
(when (boundp '*port*) ;hack alert
(enqueue
(make-instance 'magic-gadget-event
:sheet (widget->sheet widget *port*)))))
(define-signal menu-clicked-handler (widget event)
(declare (ignore event))
(let ((parent (cffi:foreign-slot-value widget 'gtkwidget 'parent)))
(enqueue
(make-instance 'menu-clicked-event
:sheet (widget->sheet parent *port*)
:item (widget->sheet widget *port*)))))
(define-signal context-menu-clicked-handler (widget event)
(declare (ignore event))
(let ((dummy-item (widget->sheet widget *port*)))
(enqueue
(make-instance 'context-menu-clicked-event
:sheet (dummy-menu-item-sheet-parent dummy-item)
:value (dummy-menu-item-sheet-value dummy-item)
:itemspec (dummy-menu-item-sheet-itemspec dummy-item)))))
(define-signal popup-deactivated-handler (widget (menu :pointer))
menu
(enqueue
(make-instance 'context-menu-cancelled-event
:sheet (widget->sheet widget *port*))))
#-sbcl
(define-signal (scrollbar-change-value-handler :return-type :int)
(widget (scroll gtkscrolltype) (value :double))
(enqueue (make-instance 'scrollbar-change-value-event
:scroll-type scroll
:value value
:sheet (widget->sheet widget *port*)))
1)
#+sbcl
;; :double in callbacks doesn't work:
(define-signal (scrollbar-change-value-handler :return-type :int)
(widget (scroll gtkscrolltype) (lo :unsigned-int) (hi :int))
(enqueue (make-instance 'scrollbar-change-value-event
:scroll-type scroll
:value (sb-kernel:make-double-float hi lo)
:sheet (widget->sheet widget *port*)))
1)
(defvar *later-table* (make-hash-table))
(defvar *later-counter* 0)
(defun invoke-later (fun)
(with-gtk ()
(let ((i (incf *later-counter*)))
(setf (gethash i *later-table*) fun)
(g_idle_add (cffi:get-callback 'idle-function) (cffi:make-pointer i)))))
(cffi:defcallback idle-function :int
((data :long)) ;hack
(let ((fun (gethash data *later-table*)))
(remhash data *later-table*)
(funcall fun))
0)
(cffi:defcallback view-selection-callback :int
((selection :pointer)
(model :pointer)
(path :pointer)
(isselected :int)
(data :pointer))
selection model path isselected
(when (boundp '*port*) ;kludge
(let ((sheet (widget->sheet data *port*)))
(enqueue (make-instance 'list-selection-event :sheet sheet))))
1)
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