src/clipboard.c

/*
 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
 *
 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
 * Copyright (C) 2005, Alex Foobarian <foobarian@gmail.com>
 *
 * This program 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 of the License, or
 * (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <string.h>
#include <stdlib.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#include <glib/gi18n.h>

#include "viking.h"


typedef struct {
  gpointer clipboard;
  gint pid;
  VikClipboardDataType type;
  gint subtype;
  guint16 layer_type;
  guint len;
  guint8 data[0];
} vik_clipboard_t;

static GtkTargetEntry target_table[] = {
  { "application/viking", 0, 0 },
  { "STRING", 0, 1 },
};

/*****************************************************************
 ** functions which send to the clipboard client (we are owner) **
 *****************************************************************/

static void clip_get ( GtkClipboard *c, GtkSelectionData *selection_data, guint info, gpointer p )
{
  vik_clipboard_t *vc = p;
  if (info==0) {
    //    g_print("clip_get: vc = %p, size = %d\n", vc, sizeof(*vc) + vc->len);
    gtk_selection_data_set ( selection_data, selection_data->target, 8, (void *)vc, sizeof(*vc) + vc->len );
  }
}

static void clip_clear ( GtkClipboard *c, gpointer p )
{
  g_free(p);
}


/**************************************************************************
 ** functions which receive from the clipboard owner (we are the client) **
 **************************************************************************/

/* our own data type */
static void clip_receive_viking ( GtkClipboard *c, GtkSelectionData *sd, gpointer p )
{
  VikLayersPanel *vlp = p;
  vik_clipboard_t *vc;
  if (sd->length == -1) {
    g_warning ( _("paste failed") );
    return;
  }
  //  g_print("clip receive: target = %s, type = %s\n", gdk_atom_name(sd->target), gdk_atom_name(sd->type));
  g_assert(!strcmp(gdk_atom_name(sd->target), target_table[0].target));

  vc = (vik_clipboard_t *)sd->data;
  //  g_print("  sd->data = %p, sd->length = %d, vc->len = %d\n", sd->data, sd->length, vc->len);

  if (sd->length != sizeof(*vc) + vc->len) {
    g_warning ( _("wrong clipboard data size") );
    return;
  }

  if ( vc->type == VIK_CLIPBOARD_DATA_LAYER )
  {
    VikLayer *new_layer = vik_layer_unmarshall ( vc->data, vc->len, vik_layers_panel_get_viewport(vlp) );
    vik_layers_panel_add_layer ( vlp, new_layer );
  }
  else if ( vc->type == VIK_CLIPBOARD_DATA_SUBLAYER )
  {
    VikLayer *sel = vik_layers_panel_get_selected ( vlp );
    if ( sel && sel->type == vc->layer_type)
    {
      if ( vik_layer_get_interface(vc->layer_type)->paste_item )
        vik_layer_get_interface(vc->layer_type)->paste_item ( sel, vc->subtype, vc->data, vc->len);
    }
    else
      a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)),
				 _("The clipboard contains sublayer data for %s layers. "
				   "You must select a layer of this type to paste the clipboard data."),
				 vik_layer_get_interface(vc->layer_type)->name );
  }
}


/*
 * utility func to handle pasted text:
 * search for N dd.dddddd W dd.dddddd, N dd° dd.dddd W dd° dd.ddddd and so forth
 */
static gboolean clip_parse_latlon ( const gchar *text, struct LatLon *coord )
{
  gint latdeg, londeg;
  gdouble latm, lonm;
  gdouble lat, lon;
  gchar *cand;
  gint len, i;
  gchar *s = g_strdup(text);

  //  g_print("parsing %s\n", s);

  len = strlen(s);

  /* remove non-digits following digits; gets rid of degree symbols or whatever people use, and
   * punctuation
   */
  for (i=0; i<len-2; i++) {
    if (g_ascii_isdigit (s[i]) && s[i+1] != '.' && !g_ascii_isdigit (s[i+1])) {
      s[i+1] = ' ';
      if (!g_ascii_isalnum (s[i+2]) && s[i+2] != '-') {
	s[i+2] = ' ';
      }
    }
  }

  /* now try reading coordinates */
  for (i=0; i<len; i++) {
    if (s[i] == 'N' || s[i] == 'S' || g_ascii_isdigit (s[i])) {
      gchar latc[2] = "SN";
      gchar lonc[2] = "WE";
      gint j, k;
      cand = s+i;

      for (j=0; j<2; j++) {
	for (k=0; k<2; k++) {
	  gchar fmt1[] = "N %d%*[ ]%lf W %d%*[ ]%lf";
	  gchar fmt2[] = "%d%*[ ]%lf N %d%*[ ]%lf W";
	  gchar fmt3[] = "N %lf W %lf";
	  gchar fmt4[] = "%lf N %lf W";

	  fmt1[0]  = latc[j];	  fmt1[13] = lonc[k];
	  fmt2[11] = latc[j];	  fmt2[24] = lonc[k];
	  fmt3[0]  = latc[j];	  fmt3[6]  = lonc[k];
	  fmt4[4]  = latc[j];	  fmt4[10] = lonc[k];

	  if (sscanf(cand, fmt1, &latdeg, &latm, &londeg, &lonm) == 4 ||
	      sscanf(cand, fmt2, &latdeg, &latm, &londeg, &lonm) == 4) {
	    lat = (j*2-1) * (latdeg + latm / 60);
	    lon = (k*2-1) * (londeg + lonm / 60);
	    break;
	  }
	  if (sscanf(cand, fmt3, &lat, &lon) == 2 ||
	      sscanf(cand, fmt4, &lat, &lon) == 2) {
	    lat *= (j*2-1);
	    lon *= (k*2-1);
	    break;
	  }
	}
	if (k!=2) break;
      }
      if (j!=2) break;

      if (sscanf(cand, "%d%*[ ]%lf %d%*[ ]%lf", &latdeg, &latm, &londeg, &lonm) == 4) {
	lat = latdeg/abs(latdeg) * (abs(latdeg) + latm / 60);
	lon = londeg/abs(londeg) * (abs(londeg) + lonm / 60);
	break;
      }
      if (sscanf(cand, "%lf %lf", &lat, &lon) == 2) {
	break;
      }
    }
  }
  g_free(s);

  /* did we get to the end without actually finding a coordinate? */
  if (i<len && lat >= -90.0 && lat <= 90.0 && lon >= -180.0 && lon <= 180.0) {
    coord->lat = lat;
    coord->lon = lon;
    return TRUE;
  }
  return FALSE;
}

static void clip_add_wp(VikLayersPanel *vlp, struct LatLon *coord)
{
  VikCoord vc;
  VikLayer *sel = vik_layers_panel_get_selected ( vlp );


  vik_coord_load_from_latlon ( &vc, VIK_COORD_LATLON, coord );

  if (sel && sel->type == VIK_LAYER_TRW) {
    vik_trw_layer_new_waypoint ( VIK_TRW_LAYER(sel), VIK_GTK_WINDOW_FROM_LAYER(sel), &vc );
  } else {
    a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)), _("In order to paste a waypoint, please select an appropriate layer to paste into."), NULL);
  }
}

static void clip_receive_text (GtkClipboard *c, const gchar *text, gpointer p)
{
  VikLayersPanel *vlp = p;
  struct LatLon coord;
  //  g_print("got text: %s\n", text);
  if (clip_parse_latlon(text, &coord)) {
    clip_add_wp(vlp, &coord);
  }
}

static void clip_receive_html ( GtkClipboard *c, GtkSelectionData *sd, gpointer p )
{
  VikLayersPanel *vlp = p;
  gsize r, w;
  GError *err = NULL;
  gchar *s, *span;
  gint tag = 0, i;
  struct LatLon coord;

  if (sd->length == -1) {
    return;
  }

  /* - copying from Mozilla seems to give html in UTF-16. */
  if (!(s =  g_convert ( (gchar *)sd->data, sd->length, "UTF-8", "UTF-16", &r, &w, &err))) {
    return;
  }
  //  g_print("html is %d bytes long: %s\n", sd->length, s);

  /* scrape a coordinate pasted from a geocaching.com page: look for a
   * telltale tag if possible, and then remove tags
   */
  if (!(span = g_strstr_len(s, w, "<span id=\"LatLon\">"))) {
    span = s;
  }
  for (i=0; i<strlen(span); i++) {
    gchar c = span[i];
    if (c == '<') {
      tag++;
    }
    if (tag>0) {
      span[i] = ' ';
    }
    if (c == '>') {
      if (tag>0) tag--;
    }
  }
  if (clip_parse_latlon(span, &coord)) {
    clip_add_wp(vlp, &coord);
  }

  g_free(s);
}

/*
 * deal with various data types a clipboard may hold
 */
void clip_receive_targets ( GtkClipboard *c, GdkAtom *a, gint n, gpointer p )
{
  VikLayersPanel *vlp = p;
  gint i;

  /*  g_print("got targets\n"); */
  for (i=0; i<n; i++) {
    /* g_print("  ""%s""\n", gdk_atom_name(a[i])); */
    if (!strcmp(gdk_atom_name(a[i]), "text/html")) {
      gtk_clipboard_request_contents ( c, gdk_atom_intern("text/html", TRUE), clip_receive_html, vlp );
      break;
    }
    if (a[i] == GDK_TARGET_STRING) {
      gtk_clipboard_request_text ( c, clip_receive_text, vlp );
      break;
    }
    if (!strcmp(gdk_atom_name(a[i]), "application/viking")) {
      gtk_clipboard_request_contents ( c, gdk_atom_intern("application/viking", TRUE), clip_receive_viking, vlp );
      break;
    }
  }
}

/*********************************************************************************
 ** public functions                                                            **
 *********************************************************************************/

/*
 * make a copy of selected object and associate ourselves with the clipboard
 */
void a_clipboard_copy_selected ( VikLayersPanel *vlp )
{
  VikLayer *sel = vik_layers_panel_get_selected ( vlp );
  GtkTreeIter iter;
  VikClipboardDataType type;
  guint16 layer_type = 0;
  gint subtype = 0;
  guint8 *data = NULL;
  guint len;

  if ( ! sel )
    return;

  vik_treeview_get_selected_iter ( sel->vt, &iter );
  layer_type = sel->type;

  if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER ) {
    type = VIK_CLIPBOARD_DATA_SUBLAYER;
    if ( vik_layer_get_interface(layer_type)->copy_item) {
      subtype = vik_treeview_item_get_data(sel->vt, &iter);
      vik_layer_get_interface(layer_type)->copy_item(sel, subtype, vik_treeview_item_get_pointer(sel->vt, &iter), &data, &len );
    }
  }
  else
  {
    gint ilen;
    type = VIK_CLIPBOARD_DATA_LAYER;
    vik_layer_marshall ( sel, &data, &ilen );
    len = ilen;
  }

  if (data)
    a_clipboard_copy( type, layer_type, subtype, len, data);

}

void a_clipboard_copy( VikClipboardDataType type, guint16 layer_type, gint subtype, guint len, guint8 * data)
{
  vik_clipboard_t * vc = g_malloc(sizeof(*vc) + len);
  GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );

  vc->type = type;
  vc->layer_type = layer_type;
  vc->subtype = subtype;
  vc->len = len;
  memcpy(vc->data, data, len);
  g_free(data);
  vc->pid = getpid();
  gtk_clipboard_set_with_data ( c, target_table, G_N_ELEMENTS(target_table), clip_get, clip_clear, vc );
}

/*
 * to deal with multiple data types, we first request the type of data on the clipboard,
 * and handle them in the callback
 */
gboolean a_clipboard_paste ( VikLayersPanel *vlp )
{
  GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );
  gtk_clipboard_request_targets ( c, clip_receive_targets, vlp );
  return TRUE;
}
Commit	Line	Data
	1	/*
	2	* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
	3	*
	4	* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
	5	* Copyright (C) 2005, Alex Foobarian <foobarian@gmail.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program; if not, write to the Free Software
	19	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	20	*
	21	*/
	22
	23	#ifdef HAVE_CONFIG_H
	24	#include "config.h"
	25	#endif
	26
	27	#include <string.h>
	28	#include <stdlib.h>
	29	#ifdef HAVE_SYS_TYPES_H
	30	#include <sys/types.h>
	31	#endif
	32	#ifdef HAVE_UNISTD_H
	33	#include <unistd.h>
	34	#endif
	35
	36	#include <glib/gi18n.h>
	37
	38	#include "viking.h"
	39
	40
	41	typedef struct {
	42	gpointer clipboard;
	43	gint pid;
	44	VikClipboardDataType type;
	45	gint subtype;
	46	guint16 layer_type;
	47	guint len;
	48	guint8 data[0];
	49	} vik_clipboard_t;
	50
	51	static GtkTargetEntry target_table[] = {
	52	{ "application/viking", 0, 0 },
	53	{ "STRING", 0, 1 },
	54	};
	55
	56	/*****************************************************************
	57	functions which send to the clipboard client (we are owner)
	58	*****************************************************************/
	59
	60	static void clip_get ( GtkClipboard c, GtkSelectionData selection_data, guint info, gpointer p )
	61	{
	62	vik_clipboard_t *vc = p;
	63	if (info==0) {
	64	// g_print("clip_get: vc = %p, size = %d\n", vc, sizeof(*vc) + vc->len);
	65	gtk_selection_data_set ( selection_data, selection_data->target, 8, (void )vc, sizeof(vc) + vc->len );
	66	}
	67	}
	68
	69	static void clip_clear ( GtkClipboard *c, gpointer p )
	70	{
	71	g_free(p);
	72	}
	73
	74
	75	/**************************************************************************
	76	functions which receive from the clipboard owner (we are the client)
	77	**************************************************************************/
	78
	79	/* our own data type */
	80	static void clip_receive_viking ( GtkClipboard c, GtkSelectionData sd, gpointer p )
	81	{
	82	VikLayersPanel *vlp = p;
	83	vik_clipboard_t *vc;
	84	if (sd->length == -1) {
	85	g_warning ( _("paste failed") );
	86	return;
	87	}
	88	// g_print("clip receive: target = %s, type = %s\n", gdk_atom_name(sd->target), gdk_atom_name(sd->type));
	89	g_assert(!strcmp(gdk_atom_name(sd->target), target_table[0].target));
	90
	91	vc = (vik_clipboard_t *)sd->data;
	92	// g_print(" sd->data = %p, sd->length = %d, vc->len = %d\n", sd->data, sd->length, vc->len);
	93
	94	if (sd->length != sizeof(*vc) + vc->len) {
	95	g_warning ( _("wrong clipboard data size") );
	96	return;
	97	}
	98
	99	if ( vc->type == VIK_CLIPBOARD_DATA_LAYER )
	100	{
	101	VikLayer *new_layer = vik_layer_unmarshall ( vc->data, vc->len, vik_layers_panel_get_viewport(vlp) );
	102	vik_layers_panel_add_layer ( vlp, new_layer );
	103	}
	104	else if ( vc->type == VIK_CLIPBOARD_DATA_SUBLAYER )
	105	{
	106	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
	107	if ( sel && sel->type == vc->layer_type)
	108	{
	109	if ( vik_layer_get_interface(vc->layer_type)->paste_item )
	110	vik_layer_get_interface(vc->layer_type)->paste_item ( sel, vc->subtype, vc->data, vc->len);
	111	}
	112	else
	113	a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)),
	114	_("The clipboard contains sublayer data for %s layers. "
	115	"You must select a layer of this type to paste the clipboard data."),
	116	vik_layer_get_interface(vc->layer_type)->name );
	117	}
	118	}
	119
	120
	121
	122	/*
	123	* utility func to handle pasted text:
	124	* search for N dd.dddddd W dd.dddddd, N dd° dd.dddd W dd° dd.ddddd and so forth
	125	*/
	126	static gboolean clip_parse_latlon ( const gchar text, struct LatLon coord )
	127	{
	128	gint latdeg, londeg;
	129	gdouble latm, lonm;
	130	gdouble lat, lon;
	131	gchar *cand;
	132	gint len, i;
	133	gchar *s = g_strdup(text);
	134
	135	// g_print("parsing %s\n", s);
	136
	137	len = strlen(s);
	138
	139	/* remove non-digits following digits; gets rid of degree symbols or whatever people use, and
	140	* punctuation
	141	*/
	142	for (i=0; i<len-2; i++) {
	143	if (g_ascii_isdigit (s[i]) && s[i+1] != '.' && !g_ascii_isdigit (s[i+1])) {
	144	s[i+1] = ' ';
	145	if (!g_ascii_isalnum (s[i+2]) && s[i+2] != '-') {
	146	s[i+2] = ' ';
	147	}
	148	}
	149	}
	150
	151	/* now try reading coordinates */
	152	for (i=0; i<len; i++) {
	153	if (s[i] == 'N' \|\| s[i] == 'S' \|\| g_ascii_isdigit (s[i])) {
	154	gchar latc[2] = "SN";
	155	gchar lonc[2] = "WE";
	156	gint j, k;
	157	cand = s+i;
	158
	159	for (j=0; j<2; j++) {
	160	for (k=0; k<2; k++) {
	161	gchar fmt1[] = "N %d%[ ]%lf W %d%[ ]%lf";
	162	gchar fmt2[] = "%d%[ ]%lf N %d%[ ]%lf W";
	163	gchar fmt3[] = "N %lf W %lf";
	164	gchar fmt4[] = "%lf N %lf W";
	165
	166	fmt1[0] = latc[j]; fmt1[13] = lonc[k];
	167	fmt2[11] = latc[j]; fmt2[24] = lonc[k];
	168	fmt3[0] = latc[j]; fmt3[6] = lonc[k];
	169	fmt4[4] = latc[j]; fmt4[10] = lonc[k];
	170
	171	if (sscanf(cand, fmt1, &latdeg, &latm, &londeg, &lonm) == 4 \|\|
	172	sscanf(cand, fmt2, &latdeg, &latm, &londeg, &lonm) == 4) {
	173	lat = (j2-1) (latdeg + latm / 60);
	174	lon = (k2-1) (londeg + lonm / 60);
	175	break;
	176	}
	177	if (sscanf(cand, fmt3, &lat, &lon) == 2 \|\|
	178	sscanf(cand, fmt4, &lat, &lon) == 2) {
	179	lat = (j2-1);
	180	lon = (k2-1);
	181	break;
	182	}
	183	}
	184	if (k!=2) break;
	185	}
	186	if (j!=2) break;
	187
	188	if (sscanf(cand, "%d%[ ]%lf %d%[ ]%lf", &latdeg, &latm, &londeg, &lonm) == 4) {
	189	lat = latdeg/abs(latdeg) * (abs(latdeg) + latm / 60);
	190	lon = londeg/abs(londeg) * (abs(londeg) + lonm / 60);
	191	break;
	192	}
	193	if (sscanf(cand, "%lf %lf", &lat, &lon) == 2) {
	194	break;
	195	}
	196	}
	197	}
	198	g_free(s);
	199
	200	/* did we get to the end without actually finding a coordinate? */
	201	if (i<len && lat >= -90.0 && lat <= 90.0 && lon >= -180.0 && lon <= 180.0) {
	202	coord->lat = lat;
	203	coord->lon = lon;
	204	return TRUE;
	205	}
	206	return FALSE;
	207	}
	208
	209	static void clip_add_wp(VikLayersPanel vlp, struct LatLon coord)
	210	{
	211	VikCoord vc;
	212	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
	213
	214
	215	vik_coord_load_from_latlon ( &vc, VIK_COORD_LATLON, coord );
	216
	217	if (sel && sel->type == VIK_LAYER_TRW) {
	218	vik_trw_layer_new_waypoint ( VIK_TRW_LAYER(sel), VIK_GTK_WINDOW_FROM_LAYER(sel), &vc );
	219	} else {
	220	a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)), _("In order to paste a waypoint, please select an appropriate layer to paste into."), NULL);
	221	}
	222	}
	223
	224	static void clip_receive_text (GtkClipboard c, const gchar text, gpointer p)
	225	{
	226	VikLayersPanel *vlp = p;
	227	struct LatLon coord;
	228	// g_print("got text: %s\n", text);
	229	if (clip_parse_latlon(text, &coord)) {
	230	clip_add_wp(vlp, &coord);
	231	}
	232	}
	233
	234	static void clip_receive_html ( GtkClipboard c, GtkSelectionData sd, gpointer p )
	235	{
	236	VikLayersPanel *vlp = p;
	237	gsize r, w;
	238	GError *err = NULL;
	239	gchar s, span;
	240	gint tag = 0, i;
	241	struct LatLon coord;
	242
	243	if (sd->length == -1) {
	244	return;
	245	}
	246
	247	/* - copying from Mozilla seems to give html in UTF-16. */
	248	if (!(s = g_convert ( (gchar *)sd->data, sd->length, "UTF-8", "UTF-16", &r, &w, &err))) {
	249	return;
	250	}
	251	// g_print("html is %d bytes long: %s\n", sd->length, s);
	252
	253	/* scrape a coordinate pasted from a geocaching.com page: look for a
	254	* telltale tag if possible, and then remove tags
	255	*/
	256	if (!(span = g_strstr_len(s, w, "<span id=\"LatLon\">"))) {
	257	span = s;
	258	}
	259	for (i=0; i<strlen(span); i++) {
	260	gchar c = span[i];
	261	if (c == '<') {
	262	tag++;
	263	}
	264	if (tag>0) {
	265	span[i] = ' ';
	266	}
	267	if (c == '>') {
	268	if (tag>0) tag--;
	269	}
	270	}
	271	if (clip_parse_latlon(span, &coord)) {
	272	clip_add_wp(vlp, &coord);
	273	}
	274
	275	g_free(s);
	276	}
	277
	278	/*
	279	* deal with various data types a clipboard may hold
	280	*/
	281	void clip_receive_targets ( GtkClipboard c, GdkAtom a, gint n, gpointer p )
	282	{
	283	VikLayersPanel *vlp = p;
	284	gint i;
	285
	286	/* g_print("got targets\n"); */
	287	for (i=0; i<n; i++) {
	288	/* g_print(" ""%s""\n", gdk_atom_name(a[i])); */
	289	if (!strcmp(gdk_atom_name(a[i]), "text/html")) {
	290	gtk_clipboard_request_contents ( c, gdk_atom_intern("text/html", TRUE), clip_receive_html, vlp );
	291	break;
	292	}
	293	if (a[i] == GDK_TARGET_STRING) {
	294	gtk_clipboard_request_text ( c, clip_receive_text, vlp );
	295	break;
	296	}
	297	if (!strcmp(gdk_atom_name(a[i]), "application/viking")) {
	298	gtk_clipboard_request_contents ( c, gdk_atom_intern("application/viking", TRUE), clip_receive_viking, vlp );
	299	break;
	300	}
	301	}
	302	}
	303
	304	/*********************************************************************************
	305	public functions
	306	*********************************************************************************/
	307
	308	/*
	309	* make a copy of selected object and associate ourselves with the clipboard
	310	*/
	311	void a_clipboard_copy_selected ( VikLayersPanel *vlp )
	312	{
	313	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
	314	GtkTreeIter iter;
	315	VikClipboardDataType type;
	316	guint16 layer_type = 0;
	317	gint subtype = 0;
	318	guint8 *data = NULL;
	319	guint len;
	320
	321	if ( ! sel )
	322	return;
	323
	324	vik_treeview_get_selected_iter ( sel->vt, &iter );
	325	layer_type = sel->type;
	326
	327	if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER ) {
	328	type = VIK_CLIPBOARD_DATA_SUBLAYER;
	329	if ( vik_layer_get_interface(layer_type)->copy_item) {
	330	subtype = vik_treeview_item_get_data(sel->vt, &iter);
	331	vik_layer_get_interface(layer_type)->copy_item(sel, subtype, vik_treeview_item_get_pointer(sel->vt, &iter), &data, &len );
	332	}
	333	}
	334	else
	335	{
	336	gint ilen;
	337	type = VIK_CLIPBOARD_DATA_LAYER;
	338	vik_layer_marshall ( sel, &data, &ilen );
	339	len = ilen;
	340	}
	341
	342	if (data)
	343	a_clipboard_copy( type, layer_type, subtype, len, data);
	344
	345	}
	346
	347	void a_clipboard_copy( VikClipboardDataType type, guint16 layer_type, gint subtype, guint len, guint8 * data)
	348	{
	349	vik_clipboard_t * vc = g_malloc(sizeof(*vc) + len);
	350	GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );
	351
	352	vc->type = type;
	353	vc->layer_type = layer_type;
	354	vc->subtype = subtype;
	355	vc->len = len;
	356	memcpy(vc->data, data, len);
	357	g_free(data);
	358	vc->pid = getpid();
	359	gtk_clipboard_set_with_data ( c, target_table, G_N_ELEMENTS(target_table), clip_get, clip_clear, vc );
	360	}
	361
	362	/*
	363	* to deal with multiple data types, we first request the type of data on the clipboard,
	364	* and handle them in the callback
	365	*/
	366	gboolean a_clipboard_paste ( VikLayersPanel *vlp )
	367	{
	368	GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );
	369	gtk_clipboard_request_targets ( c, clip_receive_targets, vlp );
	370	return TRUE;
	371	}
	372