--- /dev/null
+/* GTK selection processing for XEmacs
+ Copyright (C) 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs 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 General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING. If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
+
+/* Synched up with: Not synched with FSF. */
+
+/* Authorship:
+
+ Written by Kevin Gallo for FSF Emacs.
+ Rewritten for mswindows by Jonathan Harris, December 1997 for 21.0.
+ Rewritten for GTK by William Perry, April 2000 for 21.1
+ */
+
+
+#include <config.h>
+#include "lisp.h"
+#include "events.h"
+#include "buffer.h"
+#include "device.h"
+#include "console-gtk.h"
+#include "select.h"
+#include "opaque.h"
+#include "frame.h"
+
+int lisp_to_time (Lisp_Object, time_t *);
+static Lisp_Object Vretrieved_selection;
+static gboolean waiting_for_selection;
+Lisp_Object Vgtk_sent_selection_hooks;
+
+static Lisp_Object atom_to_symbol (struct device *d, GdkAtom atom);
+static GdkAtom symbol_to_gtk_atom (struct device *d, Lisp_Object sym, int only_if_exists);
+
+static void lisp_data_to_selection_data (struct device *,
+ Lisp_Object obj,
+ unsigned char **data_ret,
+ GdkAtom *type_ret,
+ unsigned int *size_ret,
+ int *format_ret);
+static Lisp_Object selection_data_to_lisp_data (struct device *,
+ Extbyte *data,
+ size_t size,
+ GdkAtom type,
+ int format);
+
+/* Set the selection data to GDK_NONE and NULL data, meaning we were
+** unable to do what they wanted.
+*/
+static void
+gtk_decline_selection_request (GtkSelectionData *data)
+{
+ gtk_selection_data_set (data, GDK_NONE, 0, NULL, 0);
+}
+
+/* Used as an unwind-protect clause so that, if a selection-converter signals
+ an error, we tell the requestor that we were unable to do what they wanted
+ before we throw to top-level or go into the debugger or whatever.
+ */
+struct _selection_closure
+{
+ GtkSelectionData *data;
+ gboolean successful;
+};
+
+static Lisp_Object
+gtk_selection_request_lisp_error (Lisp_Object closure)
+{
+ struct _selection_closure *cl = (struct _selection_closure *)
+ get_opaque_ptr (closure);
+
+ free_opaque_ptr (closure);
+ if (cl->successful == TRUE)
+ return Qnil;
+ gtk_decline_selection_request (cl->data);
+ return Qnil;
+}
+
+/* This provides the current selection to a requester.
+**
+** This is connected to the selection_get() signal of the application
+** shell in device-gtk.c:gtk_init_device().
+**
+** This is radically different than the old selection code (21.1.x),
+** but has been modeled after the X code, and appears to work.
+**
+** WMP Feb 12 2001
+*/
+void
+emacs_gtk_selection_handle (GtkWidget *widget,
+ GtkSelectionData *selection_data,
+ guint info,
+ guint time_stamp,
+ gpointer data)
+{
+ /* This function can GC */
+ struct gcpro gcpro1, gcpro2;
+ Lisp_Object temp_obj;
+ Lisp_Object selection_symbol;
+ Lisp_Object target_symbol = Qnil;
+ Lisp_Object converted_selection = Qnil;
+ guint32 local_selection_time;
+ Lisp_Object successful_p = Qnil;
+ int count;
+ struct device *d = decode_gtk_device (Qnil);
+ struct _selection_closure *cl = NULL;
+
+ GCPRO2 (converted_selection, target_symbol);
+
+ selection_symbol = atom_to_symbol (d, selection_data->selection);
+ target_symbol = atom_to_symbol (d, selection_data->target);
+
+#if 0 /* #### MULTIPLE doesn't work yet */
+ if (EQ (target_symbol, QMULTIPLE))
+ target_symbol = fetch_multiple_target (selection_data);
+#endif
+
+ temp_obj = Fget_selection_timestamp (selection_symbol);
+
+ if (NILP (temp_obj))
+ {
+ /* We don't appear to have the selection. */
+ gtk_decline_selection_request (selection_data);
+
+ goto DONE_LABEL;
+ }
+
+ local_selection_time = * (guint32 *) XOPAQUE_DATA (temp_obj);
+
+ if (time_stamp != GDK_CURRENT_TIME &&
+ local_selection_time > time_stamp)
+ {
+ /* Someone asked for the selection, and we have one, but not the one
+ they're looking for. */
+ gtk_decline_selection_request (selection_data);
+ goto DONE_LABEL;
+ }
+
+ converted_selection = select_convert_out (selection_symbol,
+ target_symbol, Qnil);
+
+ /* #### Is this the right thing to do? I'm no X expert. -- ajh */
+ if (NILP (converted_selection))
+ {
+ /* We don't appear to have a selection in that data type. */
+ gtk_decline_selection_request (selection_data);
+ goto DONE_LABEL;
+ }
+
+ count = specpdl_depth ();
+
+ cl = (struct _selection_closure *) xmalloc (sizeof (*cl));
+ cl->data = selection_data;
+ cl->successful = FALSE;
+
+ record_unwind_protect (gtk_selection_request_lisp_error,
+ make_opaque_ptr (cl));
+
+ {
+ unsigned char *data;
+ unsigned int size;
+ int format;
+ GdkAtom type;
+ lisp_data_to_selection_data (d, converted_selection,
+ &data, &type, &size, &format);
+
+ gtk_selection_data_set (selection_data, type, format, data, size);
+ successful_p = Qt;
+ /* Tell x_selection_request_lisp_error() it's cool. */
+ cl->successful = TRUE;
+ xfree (data);
+ }
+
+ unbind_to (count, Qnil);
+
+ DONE_LABEL:
+
+ if (cl) xfree (cl);
+
+ UNGCPRO;
+
+ /* Let random lisp code notice that the selection has been asked for. */
+ {
+ Lisp_Object val = Vgtk_sent_selection_hooks;
+ if (!UNBOUNDP (val) && !NILP (val))
+ {
+ Lisp_Object rest;
+ if (CONSP (val) && !EQ (XCAR (val), Qlambda))
+ for (rest = val; !NILP (rest); rest = Fcdr (rest))
+ call3 (Fcar (rest), selection_symbol, target_symbol, successful_p);
+ else
+ call3 (val, selection_symbol, target_symbol, successful_p);
+ }
+ }
+}
+
+
+void
+emacs_gtk_selection_clear_event_handle (GtkWidget *widget,
+ GdkEventSelection *event,
+ gpointer data)
+{
+ GdkAtom selection = event->selection;
+ guint32 changed_owner_time = event->time;
+ struct device *d = decode_gtk_device (Qnil);
+
+ Lisp_Object selection_symbol, local_selection_time_lisp;
+ guint32 local_selection_time;
+
+ selection_symbol = atom_to_symbol (d, selection);
+
+ local_selection_time_lisp = Fget_selection_timestamp (selection_symbol);
+
+ /* We don't own the selection, so that's fine. */
+ if (NILP (local_selection_time_lisp))
+ return;
+
+ local_selection_time = *(guint32 *) XOPAQUE_DATA (local_selection_time_lisp);
+
+ /* This SelectionClear is for a selection that we no longer own, so we can
+ disregard it. (That is, we have reasserted the selection since this
+ request was generated.)
+ */
+ if (changed_owner_time != GDK_CURRENT_TIME &&
+ local_selection_time > changed_owner_time)
+ return;
+
+ handle_selection_clear (selection_symbol);
+}
+
+
+\f
+static GtkWidget *reading_selection_reply;
+static GdkAtom reading_which_selection;
+static int selection_reply_timed_out;
+
+/* Gets the current selection owned by another application */
+void
+emacs_gtk_selection_received (GtkWidget *widget,
+ GtkSelectionData *selection_data,
+ gpointer user_data)
+{
+ waiting_for_selection = FALSE;
+ Vretrieved_selection = Qnil;
+
+ reading_selection_reply = NULL;
+
+ signal_fake_event ();
+
+ if (selection_data->length < 0)
+ {
+ return;
+ }
+
+ Vretrieved_selection =
+ selection_data_to_lisp_data (NULL,
+ selection_data->data,
+ selection_data->length,
+ selection_data->type,
+ selection_data->format);
+}
+
+static int
+selection_reply_done (void *ignore)
+{
+ return !reading_selection_reply;
+}
+
+/* Do protocol to read selection-data from the server.
+ Converts this to lisp data and returns it.
+ */
+static Lisp_Object
+gtk_get_foreign_selection (Lisp_Object selection_symbol,
+ Lisp_Object target_type)
+{
+ /* This function can GC */
+ struct device *d = decode_gtk_device (Qnil);
+ GtkWidget *requestor = DEVICE_GTK_APP_SHELL (d);
+ guint32 requestor_time = DEVICE_GTK_MOUSE_TIMESTAMP (d);
+ GdkAtom selection_atom = symbol_to_gtk_atom (d, selection_symbol, 0);
+ int speccount;
+ GdkAtom type_atom = symbol_to_gtk_atom (d, (CONSP (target_type) ?
+ XCAR (target_type) : target_type), 0);
+
+ gtk_selection_convert (requestor, selection_atom, type_atom,
+ requestor_time);
+
+ signal_fake_event ();
+
+ /* Block until the reply has been read. */
+ reading_selection_reply = requestor;
+ reading_which_selection = selection_atom;
+ selection_reply_timed_out = 0;
+
+ speccount = specpdl_depth ();
+
+#if 0
+ /* add a timeout handler */
+ if (gtk_selection_timeout > 0)
+ {
+ Lisp_Object id = Fadd_timeout (make_int (x_selection_timeout),
+ Qx_selection_reply_timeout_internal,
+ Qnil, Qnil);
+ record_unwind_protect (Fdisable_timeout, id);
+ }
+#endif
+
+ /* This is ^Gable */
+ wait_delaying_user_input (selection_reply_done, 0);
+
+ if (selection_reply_timed_out)
+ error ("timed out waiting for reply from selection owner");
+
+ unbind_to (speccount, Qnil);
+
+ /* otherwise, the selection is waiting for us on the requested property. */
+ return select_convert_in (selection_symbol,
+ target_type,
+ Vretrieved_selection);
+}
+
+
+#if 0
+static void
+gtk_get_window_property (struct device *d, GtkWidget *window, GdkAtom property,
+ Extbyte **data_ret, int *bytes_ret,
+ GdkAtom *actual_type_ret, int *actual_format_ret,
+ unsigned long *actual_size_ret, int delete_p)
+{
+ size_t total_size;
+ unsigned long bytes_remaining;
+ int offset = 0;
+ unsigned char *tmp_data = 0;
+ int result;
+ int buffer_size = SELECTION_QUANTUM (display);
+ if (buffer_size > MAX_SELECTION_QUANTUM) buffer_size = MAX_SELECTION_QUANTUM;
+
+ /* First probe the thing to find out how big it is. */
+ result = XGetWindowProperty (display, window, property,
+ 0, 0, False, AnyPropertyType,
+ actual_type_ret, actual_format_ret,
+ actual_size_ret,
+ &bytes_remaining, &tmp_data);
+ if (result != Success)
+ {
+ *data_ret = 0;
+ *bytes_ret = 0;
+ return;
+ }
+ XFree ((char *) tmp_data);
+
+ if (*actual_type_ret == None || *actual_format_ret == 0)
+ {
+ if (delete_p) XDeleteProperty (display, window, property);
+ *data_ret = 0;
+ *bytes_ret = 0;
+ return;
+ }
+
+ total_size = bytes_remaining + 1;
+ *data_ret = (Extbyte *) xmalloc (total_size);
+
+ /* Now read, until we've gotten it all. */
+ while (bytes_remaining)
+ {
+#if 0
+ int last = bytes_remaining;
+#endif
+ result =
+ XGetWindowProperty (display, window, property,
+ offset/4, buffer_size/4,
+ (delete_p ? True : False),
+ AnyPropertyType,
+ actual_type_ret, actual_format_ret,
+ actual_size_ret, &bytes_remaining, &tmp_data);
+#if 0
+ stderr_out ("<< read %d\n", last-bytes_remaining);
+#endif
+ /* If this doesn't return Success at this point, it means that
+ some clod deleted the selection while we were in the midst of
+ reading it. Deal with that, I guess....
+ */
+ if (result != Success) break;
+ *actual_size_ret *= *actual_format_ret / 8;
+ memcpy ((*data_ret) + offset, tmp_data, *actual_size_ret);
+ offset += *actual_size_ret;
+ XFree ((char *) tmp_data);
+ }
+ *bytes_ret = offset;
+}
+
+
+static void
+receive_incremental_selection (Display *display, Window window, Atom property,
+ /* this one is for error messages only */
+ Lisp_Object target_type,
+ unsigned int min_size_bytes,
+ Extbyte **data_ret, int *size_bytes_ret,
+ Atom *type_ret, int *format_ret,
+ unsigned long *size_ret)
+{
+ /* This function can GC */
+ int offset = 0;
+ int prop_id;
+ *size_bytes_ret = min_size_bytes;
+ *data_ret = (Extbyte *) xmalloc (*size_bytes_ret);
+#if 0
+ stderr_out ("\nread INCR %d\n", min_size_bytes);
+#endif
+ /* At this point, we have read an INCR property, and deleted it (which
+ is how we ack its receipt: the sending window will be selecting
+ PropertyNotify events on our window to notice this).
+
+ Now, we must loop, waiting for the sending window to put a value on
+ that property, then reading the property, then deleting it to ack.
+ We are done when the sender places a property of length 0.
+ */
+ prop_id = expect_property_change (display, window, property,
+ PropertyNewValue);
+ while (1)
+ {
+ Extbyte *tmp_data;
+ int tmp_size_bytes;
+ wait_for_property_change (prop_id);
+ /* expect it again immediately, because x_get_window_property may
+ .. no it won't, I don't get it.
+ .. Ok, I get it now, the Xt code that implements INCR is broken.
+ */
+ prop_id = expect_property_change (display, window, property,
+ PropertyNewValue);
+ x_get_window_property (display, window, property,
+ &tmp_data, &tmp_size_bytes,
+ type_ret, format_ret, size_ret, 1);
+
+ if (tmp_size_bytes == 0) /* we're done */
+ {
+#if 0
+ stderr_out (" read INCR done\n");
+#endif
+ unexpect_property_change (prop_id);
+ if (tmp_data) xfree (tmp_data);
+ break;
+ }
+#if 0
+ stderr_out (" read INCR %d\n", tmp_size_bytes);
+#endif
+ if (*size_bytes_ret < offset + tmp_size_bytes)
+ {
+#if 0
+ stderr_out (" read INCR realloc %d -> %d\n",
+ *size_bytes_ret, offset + tmp_size_bytes);
+#endif
+ *size_bytes_ret = offset + tmp_size_bytes;
+ *data_ret = (Extbyte *) xrealloc (*data_ret, *size_bytes_ret);
+ }
+ memcpy ((*data_ret) + offset, tmp_data, tmp_size_bytes);
+ offset += tmp_size_bytes;
+ xfree (tmp_data);
+ }
+}
+
+
+static Lisp_Object
+gtk_get_window_property_as_lisp_data (struct device *d,
+ GtkWidget *window,
+ GdkAtom property,
+ /* next two for error messages only */
+ Lisp_Object target_type,
+ GdkAtom selection_atom)
+{
+ /* This function can GC */
+ Atom actual_type;
+ int actual_format;
+ unsigned long actual_size;
+ Extbyte *data = NULL;
+ int bytes = 0;
+ Lisp_Object val;
+ struct device *d = get_device_from_display (display);
+
+ x_get_window_property (display, window, property, &data, &bytes,
+ &actual_type, &actual_format, &actual_size, 1);
+ if (! data)
+ {
+ if (XGetSelectionOwner (display, selection_atom))
+ /* there is a selection owner */
+ signal_error
+ (Qselection_conversion_error,
+ Fcons (build_string ("selection owner couldn't convert"),
+ Fcons (x_atom_to_symbol (d, selection_atom),
+ actual_type ?
+ list2 (target_type, x_atom_to_symbol (d, actual_type)) :
+ list1 (target_type))));
+ else
+ signal_error (Qerror,
+ list2 (build_string ("no selection"),
+ x_atom_to_symbol (d, selection_atom)));
+ }
+
+ if (actual_type == DEVICE_XATOM_INCR (d))
+ {
+ /* Ok, that data wasn't *the* data, it was just the beginning. */
+
+ unsigned int min_size_bytes = * ((unsigned int *) data);
+ xfree (data);
+ receive_incremental_selection (display, window, property, target_type,
+ min_size_bytes, &data, &bytes,
+ &actual_type, &actual_format,
+ &actual_size);
+ }
+
+ /* It's been read. Now convert it to a lisp object in some semi-rational
+ manner. */
+ val = selection_data_to_lisp_data (d, data, bytes,
+ actual_type, actual_format);
+
+ xfree (data);
+ return val;
+}
+#endif
+
+\f
+static GdkAtom
+symbol_to_gtk_atom (struct device *d, Lisp_Object sym, int only_if_exists)
+{
+ if (NILP (sym)) return GDK_SELECTION_PRIMARY;
+ if (EQ (sym, Qt)) return GDK_SELECTION_SECONDARY;
+ if (EQ (sym, QPRIMARY)) return GDK_SELECTION_PRIMARY;
+ if (EQ (sym, QSECONDARY)) return GDK_SELECTION_SECONDARY;
+
+ {
+ const char *nameext;
+ LISP_STRING_TO_EXTERNAL (Fsymbol_name (sym), nameext, Qctext);
+ return gdk_atom_intern (nameext, only_if_exists ? TRUE : FALSE);
+ }
+}
+
+static Lisp_Object
+atom_to_symbol (struct device *d, GdkAtom atom)
+{
+ if (atom == GDK_SELECTION_PRIMARY) return (QPRIMARY);
+ if (atom == GDK_SELECTION_SECONDARY) return (QSECONDARY);
+
+ {
+ char *intstr;
+ char *str = gdk_atom_name (atom);
+
+ if (! str) return Qnil;
+
+ TO_INTERNAL_FORMAT (C_STRING, str,
+ C_STRING_ALLOCA, intstr,
+ Qctext);
+ g_free (str);
+ return intern (intstr);
+ }
+}
+
+/* #### These are going to move into Lisp code(!) with the aid of
+ some new functions I'm working on - ajh */
+
+/* These functions convert from the selection data read from the server into
+ something that we can use from elisp, and vice versa.
+
+ Type: Format: Size: Elisp Type:
+ ----- ------- ----- -----------
+ * 8 * String
+ ATOM 32 1 Symbol
+ ATOM 32 > 1 Vector of Symbols
+ * 16 1 Integer
+ * 16 > 1 Vector of Integers
+ * 32 1 if <=16 bits: Integer
+ if > 16 bits: Cons of top16, bot16
+ * 32 > 1 Vector of the above
+
+ When converting a Lisp number to C, it is assumed to be of format 16 if
+ it is an integer, and of format 32 if it is a cons of two integers.
+
+ When converting a vector of numbers from Elisp to C, it is assumed to be
+ of format 16 if every element in the vector is an integer, and is assumed
+ to be of format 32 if any element is a cons of two integers.
+
+ When converting an object to C, it may be of the form (SYMBOL . <data>)
+ where SYMBOL is what we should claim that the type is. Format and
+ representation are as above.
+
+ NOTE: Under Mule, when someone shoves us a string without a type, we
+ set the type to 'COMPOUND_TEXT and automatically convert to Compound
+ Text. If the string has a type, we assume that the user wants the
+ data sent as-is so we just do "binary" conversion.
+ */
+
+
+static Lisp_Object
+selection_data_to_lisp_data (struct device *d,
+ Extbyte *data,
+ size_t size,
+ GdkAtom type,
+ int format)
+{
+ if (type == gdk_atom_intern ("NULL", 0))
+ return QNULL;
+
+ /* Convert any 8-bit data to a string, for compactness. */
+ else if (format == 8)
+ return make_ext_string (data, size,
+ ((type == gdk_atom_intern ("TEXT", FALSE)) ||
+ (type == gdk_atom_intern ("COMPOUND_TEXT", FALSE)))
+ ? Qctext : Qbinary);
+
+ /* Convert a single atom to a Lisp Symbol.
+ Convert a set of atoms to a vector of symbols. */
+ else if (type == gdk_atom_intern ("ATOM", FALSE))
+ {
+ if (size == sizeof (GdkAtom))
+ return atom_to_symbol (d, *((GdkAtom *) data));
+ else
+ {
+ int i;
+ int len = size / sizeof (GdkAtom);
+ Lisp_Object v = Fmake_vector (make_int (len), Qzero);
+ for (i = 0; i < len; i++)
+ Faset (v, make_int (i), atom_to_symbol (d, ((GdkAtom *) data) [i]));
+ return v;
+ }
+ }
+
+ /* Convert a single 16 or small 32 bit number to a Lisp Int.
+ If the number is > 16 bits, convert it to a cons of integers,
+ 16 bits in each half.
+ */
+ else if (format == 32 && size == sizeof (long))
+ return word_to_lisp (((unsigned long *) data) [0]);
+ else if (format == 16 && size == sizeof (short))
+ return make_int ((int) (((unsigned short *) data) [0]));
+
+ /* Convert any other kind of data to a vector of numbers, represented
+ as above (as an integer, or a cons of two 16 bit integers).
+
+ #### Perhaps we should return the actual type to lisp as well.
+
+ (x-get-selection-internal 'PRIMARY 'LINE_NUMBER)
+ ==> [4 4]
+
+ and perhaps it should be
+
+ (x-get-selection-internal 'PRIMARY 'LINE_NUMBER)
+ ==> (SPAN . [4 4])
+
+ Right now the fact that the return type was SPAN is discarded before
+ lisp code gets to see it.
+ */
+ else if (format == 16)
+ {
+ int i;
+ Lisp_Object v = make_vector (size / 4, Qzero);
+ for (i = 0; i < (int) size / 4; i++)
+ {
+ int j = (int) ((unsigned short *) data) [i];
+ Faset (v, make_int (i), make_int (j));
+ }
+ return v;
+ }
+ else
+ {
+ int i;
+ Lisp_Object v = make_vector (size / 4, Qzero);
+ for (i = 0; i < (int) size / 4; i++)
+ {
+ unsigned long j = ((unsigned long *) data) [i];
+ Faset (v, make_int (i), word_to_lisp (j));
+ }
+ return v;
+ }
+}
+
+
+static void
+lisp_data_to_selection_data (struct device *d,
+ Lisp_Object obj,
+ unsigned char **data_ret,
+ GdkAtom *type_ret,
+ unsigned int *size_ret,
+ int *format_ret)
+{
+ Lisp_Object type = Qnil;
+
+ if (CONSP (obj) && SYMBOLP (XCAR (obj)))
+ {
+ type = XCAR (obj);
+ obj = XCDR (obj);
+ if (CONSP (obj) && NILP (XCDR (obj)))
+ obj = XCAR (obj);
+ }
+
+ if (EQ (obj, QNULL) || (EQ (type, QNULL)))
+ { /* This is not the same as declining */
+ *format_ret = 32;
+ *size_ret = 0;
+ *data_ret = 0;
+ type = QNULL;
+ }
+ else if (STRINGP (obj))
+ {
+ const Extbyte *extval;
+ Extcount extvallen;
+
+ TO_EXTERNAL_FORMAT (LISP_STRING, obj,
+ ALLOCA, (extval, extvallen),
+ (NILP (type) ? Qctext : Qbinary));
+ *format_ret = 8;
+ *size_ret = extvallen;
+ *data_ret = (unsigned char *) xmalloc (*size_ret);
+ memcpy (*data_ret, extval, *size_ret);
+#ifdef MULE
+ if (NILP (type)) type = QCOMPOUND_TEXT;
+#else
+ if (NILP (type)) type = QSTRING;
+#endif
+ }
+ else if (CHARP (obj))
+ {
+ Bufbyte buf[MAX_EMCHAR_LEN];
+ Bytecount len;
+ const Extbyte *extval;
+ Extcount extvallen;
+
+ *format_ret = 8;
+ len = set_charptr_emchar (buf, XCHAR (obj));
+ TO_EXTERNAL_FORMAT (DATA, (buf, len),
+ ALLOCA, (extval, extvallen),
+ Qctext);
+ *size_ret = extvallen;
+ *data_ret = (unsigned char *) xmalloc (*size_ret);
+ memcpy (*data_ret, extval, *size_ret);
+#ifdef MULE
+ if (NILP (type)) type = QCOMPOUND_TEXT;
+#else
+ if (NILP (type)) type = QSTRING;
+#endif
+ }
+ else if (SYMBOLP (obj))
+ {
+ *format_ret = 32;
+ *size_ret = 1;
+ *data_ret = (unsigned char *) xmalloc (sizeof (GdkAtom) + 1);
+ (*data_ret) [sizeof (GdkAtom)] = 0;
+ (*(GdkAtom **) data_ret) [0] = symbol_to_gtk_atom (d, obj, 0);
+ if (NILP (type)) type = QATOM;
+ }
+ else if (INTP (obj) &&
+ XINT (obj) <= 0x7FFF &&
+ XINT (obj) >= -0x8000)
+ {
+ *format_ret = 16;
+ *size_ret = 1;
+ *data_ret = (unsigned char *) xmalloc (sizeof (short) + 1);
+ (*data_ret) [sizeof (short)] = 0;
+ (*(short **) data_ret) [0] = (short) XINT (obj);
+ if (NILP (type)) type = QINTEGER;
+ }
+ else if (INTP (obj) || CONSP (obj))
+ {
+ *format_ret = 32;
+ *size_ret = 1;
+ *data_ret = (unsigned char *) xmalloc (sizeof (long) + 1);
+ (*data_ret) [sizeof (long)] = 0;
+ (*(unsigned long **) data_ret) [0] = lisp_to_word (obj);
+ if (NILP (type)) type = QINTEGER;
+ }
+ else if (VECTORP (obj))
+ {
+ /* Lisp Vectors may represent a set of ATOMs;
+ a set of 16 or 32 bit INTEGERs;
+ or a set of ATOM_PAIRs (represented as [[A1 A2] [A3 A4] ...]
+ */
+ int i;
+
+ if (SYMBOLP (XVECTOR_DATA (obj) [0]))
+ /* This vector is an ATOM set */
+ {
+ if (NILP (type)) type = QATOM;
+ *size_ret = XVECTOR_LENGTH (obj);
+ *format_ret = 32;
+ *data_ret = (unsigned char *) xmalloc ((*size_ret) * sizeof (GdkAtom));
+ for (i = 0; i < (int) (*size_ret); i++)
+ if (SYMBOLP (XVECTOR_DATA (obj) [i]))
+ (*(GdkAtom **) data_ret) [i] =
+ symbol_to_gtk_atom (d, XVECTOR_DATA (obj) [i], 0);
+ else
+ signal_error (Qerror, /* Qselection_error */
+ list2 (build_string
+ ("all elements of the vector must be of the same type"),
+ obj));
+ }
+#if 0 /* #### MULTIPLE doesn't work yet */
+ else if (VECTORP (XVECTOR_DATA (obj) [0]))
+ /* This vector is an ATOM_PAIR set */
+ {
+ if (NILP (type)) type = QATOM_PAIR;
+ *size_ret = XVECTOR_LENGTH (obj);
+ *format_ret = 32;
+ *data_ret = (unsigned char *)
+ xmalloc ((*size_ret) * sizeof (Atom) * 2);
+ for (i = 0; i < *size_ret; i++)
+ if (VECTORP (XVECTOR_DATA (obj) [i]))
+ {
+ Lisp_Object pair = XVECTOR_DATA (obj) [i];
+ if (XVECTOR_LENGTH (pair) != 2)
+ signal_error (Qerror,
+ list2 (build_string
+ ("elements of the vector must be vectors of exactly two elements"),
+ pair));
+
+ (*(GdkAtom **) data_ret) [i * 2] =
+ symbol_to_gtk_atom (d, XVECTOR_DATA (pair) [0], 0);
+ (*(GdkAtom **) data_ret) [(i * 2) + 1] =
+ symbol_to_gtk_atom (d, XVECTOR_DATA (pair) [1], 0);
+ }
+ else
+ signal_error (Qerror,
+ list2 (build_string
+ ("all elements of the vector must be of the same type"),
+ obj));
+ }
+#endif
+ else
+ /* This vector is an INTEGER set, or something like it */
+ {
+ *size_ret = XVECTOR_LENGTH (obj);
+ if (NILP (type)) type = QINTEGER;
+ *format_ret = 16;
+ for (i = 0; i < (int) (*size_ret); i++)
+ if (CONSP (XVECTOR_DATA (obj) [i]))
+ *format_ret = 32;
+ else if (!INTP (XVECTOR_DATA (obj) [i]))
+ signal_error (Qerror, /* Qselection_error */
+ list2 (build_string
+ ("all elements of the vector must be integers or conses of integers"),
+ obj));
+
+ *data_ret = (unsigned char *) xmalloc (*size_ret * (*format_ret/8));
+ for (i = 0; i < (int) (*size_ret); i++)
+ if (*format_ret == 32)
+ (*((unsigned long **) data_ret)) [i] =
+ lisp_to_word (XVECTOR_DATA (obj) [i]);
+ else
+ (*((unsigned short **) data_ret)) [i] =
+ (unsigned short) lisp_to_word (XVECTOR_DATA (obj) [i]);
+ }
+ }
+ else
+ signal_error (Qerror, /* Qselection_error */
+ list2 (build_string ("unrecognized selection data"),
+ obj));
+
+ *type_ret = symbol_to_gtk_atom (d, type, 0);
+}
+
+\f
+
+static Lisp_Object
+gtk_own_selection (Lisp_Object selection_name, Lisp_Object selection_value,
+ Lisp_Object how_to_add, Lisp_Object selection_type)
+{
+ struct device *d = decode_gtk_device (Qnil);
+ GtkWidget *selecting_window = GTK_WIDGET (DEVICE_GTK_APP_SHELL (d));
+ Lisp_Object selection_time;
+ /* Use the time of the last-read mouse or keyboard event.
+ For selection purposes, we use this as a sleazy way of knowing what the
+ current time is in server-time. This assumes that the most recently read
+ mouse or keyboard event has something to do with the assertion of the
+ selection, which is probably true.
+ */
+ guint32 thyme = DEVICE_GTK_MOUSE_TIMESTAMP (d);
+ GdkAtom selection_atom;
+
+ CHECK_SYMBOL (selection_name);
+ selection_atom = symbol_to_gtk_atom (d, selection_name, 0);
+
+ gtk_selection_owner_set (selecting_window,
+ selection_atom,
+ thyme);
+
+ /* We do NOT use time_to_lisp() here any more, like we used to.
+ That assumed equivalence of time_t and Time, which is not
+ necessarily the case (e.g. under OSF on the Alphas, where
+ Time is a 64-bit quantity and time_t is a 32-bit quantity).
+
+ Opaque pointers are the clean way to go here.
+ */
+ selection_time = make_opaque (&thyme, sizeof (thyme));
+
+ return selection_time;
+}
+
+static void
+gtk_disown_selection (Lisp_Object selection, Lisp_Object timeval)
+{
+ struct device *d = decode_gtk_device (Qnil);
+ GdkAtom selection_atom;
+ guint32 timestamp;
+
+ CHECK_SYMBOL (selection);
+ selection_atom = symbol_to_gtk_atom (d, selection, 0);
+
+ if (NILP (timeval))
+ timestamp = DEVICE_GTK_MOUSE_TIMESTAMP (d);
+ else
+ {
+ time_t the_time;
+ lisp_to_time (timeval, &the_time);
+ timestamp = (guint32) the_time;
+ }
+
+ gtk_selection_owner_set (NULL, selection_atom, timestamp);
+}
+
+static Lisp_Object
+gtk_selection_exists_p (Lisp_Object selection,
+ Lisp_Object selection_type)
+{
+ struct device *d = decode_gtk_device (Qnil);
+
+ return (gdk_selection_owner_get (symbol_to_gtk_atom (d, selection, 0)) ? Qt : Qnil);
+}
+
+
+ \f
+/************************************************************************/
+/* initialization */
+/************************************************************************/
+
+void
+syms_of_select_gtk (void)
+{
+}
+
+void
+console_type_create_select_gtk (void)
+{
+ CONSOLE_HAS_METHOD (gtk, own_selection);
+ CONSOLE_HAS_METHOD (gtk, disown_selection);
+ CONSOLE_HAS_METHOD (gtk, selection_exists_p);
+ CONSOLE_HAS_METHOD (gtk, get_foreign_selection);
+}
+
+void
+vars_of_select_gtk (void)
+{
+ staticpro (&Vretrieved_selection);
+ Vretrieved_selection = Qnil;
+
+ DEFVAR_LISP ("gtk-sent-selection-hooks", &Vgtk_sent_selection_hooks /*
+A function or functions to be called after we have responded to some
+other client's request for the value of a selection that we own. The
+function(s) will be called with four arguments:
+ - the name of the selection (typically PRIMARY, SECONDARY, or CLIPBOARD);
+ - the name of the selection-type which we were requested to convert the
+ selection into before sending (for example, STRING or LENGTH);
+ - and whether we successfully transmitted the selection.
+We might have failed (and declined the request) for any number of reasons,
+including being asked for a selection that we no longer own, or being asked
+to convert into a type that we don't know about or that is inappropriate.
+This hook doesn't let you change the behavior of emacs's selection replies,
+it merely informs you that they have happened.
+*/ );
+ Vgtk_sent_selection_hooks = Qunbound;
+}
projects / chise / xemacs-chise.git- / blobdiff