[andy/viking.git] / 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;
  gchar *text;
  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 ) {
    // Viking Data Type
    //    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 );
  }
  if ( info == 1 ) {
    // String
    gtk_selection_data_set_text ( selection_data, vc->text, -1); // string text is null terminated
  }

}

static void clip_clear ( GtkClipboard *c, gpointer p )
{
  vik_clipboard_t* vc = (vik_clipboard_t*)p;
  g_free(vc->text);
  g_free(vc);
}


/**************************************************************************
 ** 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 );
  }
}


/**
 * clip_parse_latlon:
 * @text: text containing LatLon data.
 * @coord: computed coordinates.
 *
 * 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.
 *
 * Returns: TRUE if coordinates are set.
 */
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);
}

/**
 * clip_receive_targets:
 *
 * 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;

  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                                                            **
 *********************************************************************************/

/**
 * a_clipboard_copy_selected:
 *
 * 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;
  const gchar *name = NULL;

  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 );
      name = vik_treeview_item_get_pointer(sel->vt, &iter);
    }    
  }
  else
  {
    gint ilen;
    type = VIK_CLIPBOARD_DATA_LAYER;
    vik_layer_marshall ( sel, &data, &ilen );
    len = ilen;
    name = vik_layer_get_name ( vik_treeview_item_get_pointer(sel->vt, &iter) );
  }

  if (data) {
    a_clipboard_copy( type, layer_type, subtype, len, name, data);
  }
}

void a_clipboard_copy( VikClipboardDataType type, guint16 layer_type, gint subtype, guint len, const gchar* text, 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;
  vc->text = g_strdup (text);
  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 );
}

/**
 * a_clipboard_paste:
 *
 * 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
50a14534 EB	1	/*
	2	* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
	3	*
	4	* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
a482007a	5	* Copyright (C) 2005, Alex Foobarian <foobarian@gmail.com>
50a14534 EB	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
45acf79e MA	23	#ifdef HAVE_CONFIG_H
	24	#include "config.h"
	25	#endif
	26
4df1abf8	27	#include <string.h>
2f50c650	28	#include <stdlib.h>
45acf79e MA	29	#ifdef HAVE_SYS_TYPES_H
	30	#include <sys/types.h>
	31	#endif
	32	#ifdef HAVE_UNISTD_H
	33	#include <unistd.h>
	34	#endif
4c77d5e0 GB	35
	36	#include <glib/gi18n.h>
	37
50a14534 EB	38	#include "viking.h"
50a14534 EB	39
2f50c650	40
4df1abf8 EB	41	typedef struct {
4df1abf8 EB	42	gpointer clipboard;
c434d571	43	gint pid;
2cebc318	44	VikClipboardDataType type;
4df1abf8 EB	45	gint subtype;
4df1abf8 EB	46	guint16 layer_type;
c434d571	47	guint len;
80fb9ed8	48	gchar *text;
c434d571	49	guint8 data[0];
4df1abf8	50	} vik_clipboard_t;
50a14534	51
4df1abf8 EB	52	static GtkTargetEntry target_table[] = {
	53	{ "application/viking", 0, 0 },
	54	{ "STRING", 0, 1 },
	55	};
50a14534	56
2f50c650 AF	57	/*****************************************************************
	58	functions which send to the clipboard client (we are owner)
	59	*****************************************************************/
50a14534	60
4df1abf8 EB	61	static void clip_get ( GtkClipboard c, GtkSelectionData selection_data, guint info, gpointer p )
	62	{
	63	vik_clipboard_t *vc = p;
80fb9ed8 RN	64	if ( info == 0 ) {
80fb9ed8 RN	65	// Viking Data Type
0a6cab71	66	// g_print("clip_get: vc = %p, size = %d\n", vc, sizeof(*vc) + vc->len);
c434d571	67	gtk_selection_data_set ( selection_data, selection_data->target, 8, (void )vc, sizeof(vc) + vc->len );
50a14534	68	}
80fb9ed8 RN	69	if ( info == 1 ) {
	70	// String
	71	gtk_selection_data_set_text ( selection_data, vc->text, -1); // string text is null terminated
	72	}
	73
50a14534 EB	74	}
50a14534 EB	75
4df1abf8	76	static void clip_clear ( GtkClipboard *c, gpointer p )
50a14534	77	{
80fb9ed8 RN	78	vik_clipboard_t* vc = (vik_clipboard_t*)p;
	79	g_free(vc->text);
	80	g_free(vc);
4df1abf8 EB	81	}
	82
	83
2f50c650 AF	84	/**************************************************************************
	85	functions which receive from the clipboard owner (we are the client)
	86	**************************************************************************/
4df1abf8 EB	87
	88	/* our own data type */
	89	static void clip_receive_viking ( GtkClipboard c, GtkSelectionData sd, gpointer p )
	90	{
	91	VikLayersPanel *vlp = p;
	92	vik_clipboard_t *vc;
	93	if (sd->length == -1) {
4c77d5e0	94	g_warning ( _("paste failed") );
4df1abf8 EB	95	return;
4df1abf8 EB	96	}
2f50c650	97	// g_print("clip receive: target = %s, type = %s\n", gdk_atom_name(sd->target), gdk_atom_name(sd->type));
4df1abf8	98	g_assert(!strcmp(gdk_atom_name(sd->target), target_table[0].target));
4df1abf8 EB	99
4df1abf8 EB	100	vc = (vik_clipboard_t *)sd->data;
0a6cab71 AF	101	// g_print(" sd->data = %p, sd->length = %d, vc->len = %d\n", sd->data, sd->length, vc->len);
	102
	103	if (sd->length != sizeof(*vc) + vc->len) {
4c77d5e0	104	g_warning ( _("wrong clipboard data size") );
0a6cab71 AF	105	return;
0a6cab71 AF	106	}
4df1abf8	107
2cebc318	108	if ( vc->type == VIK_CLIPBOARD_DATA_LAYER )
50a14534	109	{
c434d571 AF	110	VikLayer *new_layer = vik_layer_unmarshall ( vc->data, vc->len, vik_layers_panel_get_viewport(vlp) );
c434d571 AF	111	vik_layers_panel_add_layer ( vlp, new_layer );
50a14534	112	}
2cebc318	113	else if ( vc->type == VIK_CLIPBOARD_DATA_SUBLAYER )
50a14534 EB	114	{
50a14534 EB	115	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
4df1abf8	116	if ( sel && sel->type == vc->layer_type)
50a14534	117	{
4df1abf8	118	if ( vik_layer_get_interface(vc->layer_type)->paste_item )
ddc47a46	119	vik_layer_get_interface(vc->layer_type)->paste_item ( sel, vc->subtype, vc->data, vc->len);
50a14534 EB	120	}
50a14534 EB	121	else
4c77d5e0	122	a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)),
f5f53833	123	_("The clipboard contains sublayer data for %s layers. "
4c77d5e0 GB	124	"You must select a layer of this type to paste the clipboard data."),
4c77d5e0 GB	125	vik_layer_get_interface(vc->layer_type)->name );
4df1abf8 EB	126	}
	127	}
	128
	129
2f50c650	130
317cbf8a GB	131	/**
	132	* clip_parse_latlon:
	133	* @text: text containing LatLon data.
	134	* @coord: computed coordinates.
	135	*
	136	* Utility func to handle pasted text:
	137	* search for N dd.dddddd W dd.dddddd, N dd° dd.dddd W dd° dd.ddddd and so forth.
	138	*
	139	* Returns: TRUE if coordinates are set.
4df1abf8	140	*/
2f50c650 AF	141	static gboolean clip_parse_latlon ( const gchar text, struct LatLon coord )
	142	{
	143	gint latdeg, londeg;
	144	gdouble latm, lonm;
	145	gdouble lat, lon;
	146	gchar *cand;
	147	gint len, i;
	148	gchar *s = g_strdup(text);
	149
	150	// g_print("parsing %s\n", s);
	151
	152	len = strlen(s);
	153
	154	/* remove non-digits following digits; gets rid of degree symbols or whatever people use, and
	155	* punctuation
	156	*/
	157	for (i=0; i<len-2; i++) {
	158	if (g_ascii_isdigit (s[i]) && s[i+1] != '.' && !g_ascii_isdigit (s[i+1])) {
	159	s[i+1] = ' ';
e0fca367	160	if (!g_ascii_isalnum (s[i+2]) && s[i+2] != '-') {
2f50c650 AF	161	s[i+2] = ' ';
	162	}
	163	}
	164	}
	165
	166	/* now try reading coordinates */
	167	for (i=0; i<len; i++) {
	168	if (s[i] == 'N' \|\| s[i] == 'S' \|\| g_ascii_isdigit (s[i])) {
	169	gchar latc[2] = "SN";
	170	gchar lonc[2] = "WE";
	171	gint j, k;
	172	cand = s+i;
	173
2f50c650 AF	174	for (j=0; j<2; j++) {
	175	for (k=0; k<2; k++) {
	176	gchar fmt1[] = "N %d%[ ]%lf W %d%[ ]%lf";
	177	gchar fmt2[] = "%d%[ ]%lf N %d%[ ]%lf W";
	178	gchar fmt3[] = "N %lf W %lf";
	179	gchar fmt4[] = "%lf N %lf W";
	180
	181	fmt1[0] = latc[j]; fmt1[13] = lonc[k];
	182	fmt2[11] = latc[j]; fmt2[24] = lonc[k];
	183	fmt3[0] = latc[j]; fmt3[6] = lonc[k];
	184	fmt4[4] = latc[j]; fmt4[10] = lonc[k];
	185
	186	if (sscanf(cand, fmt1, &latdeg, &latm, &londeg, &lonm) == 4 \|\|
	187	sscanf(cand, fmt2, &latdeg, &latm, &londeg, &lonm) == 4) {
	188	lat = (j2-1) (latdeg + latm / 60);
	189	lon = (k2-1) (londeg + lonm / 60);
	190	break;
	191	}
	192	if (sscanf(cand, fmt3, &lat, &lon) == 2 \|\|
	193	sscanf(cand, fmt4, &lat, &lon) == 2) {
	194	lat = (j2-1);
	195	lon = (k2-1);
	196	break;
	197	}
	198	}
	199	if (k!=2) break;
	200	}
	201	if (j!=2) break;
	202
	203	if (sscanf(cand, "%d%[ ]%lf %d%[ ]%lf", &latdeg, &latm, &londeg, &lonm) == 4) {
	204	lat = latdeg/abs(latdeg) * (abs(latdeg) + latm / 60);
	205	lon = londeg/abs(londeg) * (abs(londeg) + lonm / 60);
	206	break;
	207	}
	208	if (sscanf(cand, "%lf %lf", &lat, &lon) == 2) {
	209	break;
	210	}
	211	}
	212	}
	213	g_free(s);
	214
7680e9fe AF	215	/* did we get to the end without actually finding a coordinate? */
7680e9fe AF	216	if (i<len && lat >= -90.0 && lat <= 90.0 && lon >= -180.0 && lon <= 180.0) {
2f50c650 AF	217	coord->lat = lat;
	218	coord->lon = lon;
	219	return TRUE;
2f50c650	220	}
7680e9fe	221	return FALSE;
2f50c650 AF	222	}
	223
	224	static void clip_add_wp(VikLayersPanel vlp, struct LatLon coord)
	225	{
	226	VikCoord vc;
	227	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
	228
	229
	230	vik_coord_load_from_latlon ( &vc, VIK_COORD_LATLON, coord );
	231
	232	if (sel && sel->type == VIK_LAYER_TRW) {
	233	vik_trw_layer_new_waypoint ( VIK_TRW_LAYER(sel), VIK_GTK_WINDOW_FROM_LAYER(sel), &vc );
	234	} else {
4c77d5e0	235	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);
2f50c650 AF	236	}
	237	}
	238
4df1abf8 EB	239	static void clip_receive_text (GtkClipboard c, const gchar text, gpointer p)
	240	{
	241	VikLayersPanel *vlp = p;
2f50c650	242	struct LatLon coord;
e0fca367	243	// g_print("got text: %s\n", text);
2f50c650 AF	244	if (clip_parse_latlon(text, &coord)) {
	245	clip_add_wp(vlp, &coord);
	246	}
4df1abf8 EB	247	}
4df1abf8 EB	248
4df1abf8 EB	249	static void clip_receive_html ( GtkClipboard c, GtkSelectionData sd, gpointer p )
	250	{
	251	VikLayersPanel *vlp = p;
00bb93da	252	gsize r, w;
4df1abf8	253	GError *err = NULL;
2f50c650 AF	254	gchar s, span;
	255	gint tag = 0, i;
	256	struct LatLon coord;
4df1abf8 EB	257
	258	if (sd->length == -1) {
	259	return;
	260	}
	261
2f50c650	262	/* - copying from Mozilla seems to give html in UTF-16. */
ddc47a46	263	if (!(s = g_convert ( (gchar *)sd->data, sd->length, "UTF-8", "UTF-16", &r, &w, &err))) {
4df1abf8 EB	264	return;
4df1abf8 EB	265	}
2f50c650 AF	266	// g_print("html is %d bytes long: %s\n", sd->length, s);
	267
	268	/* scrape a coordinate pasted from a geocaching.com page: look for a
	269	* telltale tag if possible, and then remove tags
	270	*/
	271	if (!(span = g_strstr_len(s, w, "<span id=\"LatLon\">"))) {
	272	span = s;
	273	}
	274	for (i=0; i<strlen(span); i++) {
	275	gchar c = span[i];
	276	if (c == '<') {
	277	tag++;
	278	}
	279	if (tag>0) {
	280	span[i] = ' ';
	281	}
	282	if (c == '>') {
	283	if (tag>0) tag--;
	284	}
	285	}
	286	if (clip_parse_latlon(span, &coord)) {
	287	clip_add_wp(vlp, &coord);
	288	}
	289
4df1abf8 EB	290	g_free(s);
	291	}
	292
317cbf8a GB	293	/**
	294	* clip_receive_targets:
	295	*
	296	* Deal with various data types a clipboard may hold.
4df1abf8 EB	297	*/
	298	void clip_receive_targets ( GtkClipboard c, GdkAtom a, gint n, gpointer p )
	299	{
	300	VikLayersPanel *vlp = p;
	301	gint i;
	302
4df1abf8	303	for (i=0; i<n; i++) {
80fb9ed8	304	// g_print(" ""%s""\n", gdk_atom_name(a[i]));
4df1abf8 EB	305	if (!strcmp(gdk_atom_name(a[i]), "text/html")) {
	306	gtk_clipboard_request_contents ( c, gdk_atom_intern("text/html", TRUE), clip_receive_html, vlp );
	307	break;
	308	}
	309	if (a[i] == GDK_TARGET_STRING) {
	310	gtk_clipboard_request_text ( c, clip_receive_text, vlp );
	311	break;
	312	}
	313	if (!strcmp(gdk_atom_name(a[i]), "application/viking")) {
	314	gtk_clipboard_request_contents ( c, gdk_atom_intern("application/viking", TRUE), clip_receive_viking, vlp );
	315	break;
	316	}
50a14534	317	}
4df1abf8 EB	318	}
	319
	320	/*********************************************************************************
	321	public functions
	322	*********************************************************************************/
	323
317cbf8a GB	324	/**
	325	* a_clipboard_copy_selected:
	326	*
	327	* Make a copy of selected object and associate ourselves with the clipboard.
4df1abf8	328	*/
2cebc318	329	void a_clipboard_copy_selected ( VikLayersPanel *vlp )
4df1abf8 EB	330	{
	331	VikLayer *sel = vik_layers_panel_get_selected ( vlp );
	332	GtkTreeIter iter;
2cebc318 QT	333	VikClipboardDataType type;
	334	guint16 layer_type = 0;
	335	gint subtype = 0;
ddc47a46	336	guint8 *data = NULL;
c434d571	337	guint len;
80fb9ed8	338	const gchar *name = NULL;
4df1abf8 EB	339
	340	if ( ! sel )
	341	return;
	342
	343	vik_treeview_get_selected_iter ( sel->vt, &iter );
f5f53833	344	layer_type = sel->type;
4df1abf8	345
ddc47a46	346	if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER ) {
2cebc318	347	type = VIK_CLIPBOARD_DATA_SUBLAYER;
2cebc318 QT	348	if ( vik_layer_get_interface(layer_type)->copy_item) {
	349	subtype = vik_treeview_item_get_data(sel->vt, &iter);
	350	vik_layer_get_interface(layer_type)->copy_item(sel, subtype, vik_treeview_item_get_pointer(sel->vt, &iter), &data, &len );
80fb9ed8	351	name = vik_treeview_item_get_pointer(sel->vt, &iter);
c434d571	352	}
4df1abf8 EB	353	}
	354	else
	355	{
494eb388	356	gint ilen;
2cebc318	357	type = VIK_CLIPBOARD_DATA_LAYER;
494eb388 QT	358	vik_layer_marshall ( sel, &data, &ilen );
494eb388 QT	359	len = ilen;
80fb9ed8	360	name = vik_layer_get_name ( vik_treeview_item_get_pointer(sel->vt, &iter) );
4df1abf8	361	}
ddc47a46	362
80fb9ed8 RN	363	if (data) {
	364	a_clipboard_copy( type, layer_type, subtype, len, name, data);
	365	}
2cebc318	366	}
ddc47a46	367
80fb9ed8	368	void a_clipboard_copy( VikClipboardDataType type, guint16 layer_type, gint subtype, guint len, const gchar* text, guint8 * data)
2cebc318 QT	369	{
	370	vik_clipboard_t * vc = g_malloc(sizeof(*vc) + len);
	371	GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );
ddc47a46	372
2cebc318 QT	373	vc->type = type;
	374	vc->layer_type = layer_type;
	375	vc->subtype = subtype;
	376	vc->len = len;
80fb9ed8	377	vc->text = g_strdup (text);
2cebc318 QT	378	memcpy(vc->data, data, len);
	379	g_free(data);
	380	vc->pid = getpid();
	381	gtk_clipboard_set_with_data ( c, target_table, G_N_ELEMENTS(target_table), clip_get, clip_clear, vc );
4df1abf8 EB	382	}
4df1abf8 EB	383
317cbf8a GB	384	/**
	385	* a_clipboard_paste:
	386	*
	387	* To deal with multiple data types, we first request the type of data on the clipboard,
	388	* and handle them in the callback.
4df1abf8 EB	389	*/
	390	gboolean a_clipboard_paste ( VikLayersPanel *vlp )
	391	{
	392	GtkClipboard *c = gtk_clipboard_get ( GDK_SELECTION_CLIPBOARD );
	393	gtk_clipboard_request_targets ( c, clip_receive_targets, vlp );
	394	return TRUE;
50a14534	395	}
2f50c650	396