X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/50a14534a51f892500ee82f867e8ab2f85b936ae..62c16860425da3b6c377949052ea509a1229bd59:/src/clipboard.c?ds=sidebyside

diff --git a/src/clipboard.c b/src/clipboard.c
index 5b6d97f8..0ceed340 100644
--- a/src/clipboard.c
+++ b/src/clipboard.c
@@ -19,89 +19,343 @@
  *
  */
 
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
 #include "viking.h"
 
-/* static for a very good reason -- share between windows */
 
-#define DATA_NONE 0
-#define DATA_LAYER 1
-#define DATA_SUBLAYER 2
+typedef struct {
+  gpointer clipboard;
+  gint pid;
+  VikClipboardDataType type;
+  gint subtype;
+  guint16 layer_type;
+  guint len;
+  guint8 data[0];
+} vik_clipboard_t;
 
-guint8 type = DATA_NONE;
-gint subtype;
-guint16 layer_type;
-gpointer clipboard;
+static GtkTargetEntry target_table[] = {
+  { "application/viking", 0, 0 },
+  { "STRING", 0, 1 },
+};
 
-void a_clipboard_copy ( VikLayersPanel *vlp )
+/*****************************************************************
+ ** functions which send to the clipboard client (we are owner) **
+ *****************************************************************/
+
+static void clip_get ( GtkClipboard *c, GtkSelectionData *selection_data, guint info, gpointer p ) 
 {
-  VikLayer *sel = vik_layers_panel_get_selected ( vlp );
-  GtkTreeIter iter;
-  if ( ! sel )
+  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 );
+  }
+  if (info==1) {
+    if (vc->type == VIK_CLIPBOARD_DATA_LAYER) {
+      gtk_selection_data_set_text ( selection_data, VIK_LAYER(vc->clipboard)->name, -1 );
+    } 
+  }
+}
+
+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));
 
-  vik_treeview_get_selected_iter ( sel->vt, &iter );
+  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 ( clipboard )
-    a_clipboard_uninit();
+  if (sd->length != sizeof(*vc) + vc->len) {
+    g_warning ( "wrong clipboard data size" );
+    return;
+  }
 
-  if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER )
+  if ( vc->type == VIK_CLIPBOARD_DATA_LAYER )
   {
-    layer_type = sel->type;
-    if ( vik_layer_get_interface(layer_type)->copy_item && (clipboard = vik_layer_get_interface(layer_type)->
-        copy_item(sel,subtype=vik_treeview_item_get_data(sel->vt,&iter),vik_treeview_item_get_pointer(sel->vt,&iter)) ))
-      type = DATA_SUBLAYER;
+    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
+  else if ( vc->type == VIK_CLIPBOARD_DATA_SUBLAYER )
   {
-    clipboard = sel;
-    g_object_ref ( G_OBJECT(sel) );
-    type = DATA_LAYER;
+    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 a %s layers. You must select a layer of this type to paste the clipboard data.", vik_layer_get_interface(vc->layer_type)->name );
   }
 }
 
-gboolean a_clipboard_paste ( VikLayersPanel *vlp )
+
+
+/*
+ * 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 ) 
 {
-  if ( clipboard && type == DATA_LAYER )
-  {
-    /* oooh, _private_ ... so sue me, there's no other way to do this. */
-    if ( G_OBJECT(clipboard)->ref_count == 1 )
-    { /* optimization -- if layer has been deleted, don't copy the layer. */
-      g_object_ref ( G_OBJECT(clipboard) );
-      vik_layers_panel_add_layer ( vlp, VIK_LAYER(clipboard) );
-      return TRUE;
-    }
-    else
-    {
-      VikLayer *new_layer = vik_layer_copy ( VIK_LAYER(clipboard), vik_layers_panel_get_viewport(vlp) );
-      if ( new_layer )
-      {
-        vik_layers_panel_add_layer ( vlp, new_layer );
-        return TRUE;
+  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] = ' ';
       }
     }
   }
-  else if ( clipboard && type == DATA_SUBLAYER )
-  {
-    VikLayer *sel = vik_layers_panel_get_selected ( vlp );
-    if ( sel && sel->type == layer_type)
-    {
-      if ( vik_layer_get_interface(layer_type)->paste_item )
-        return vik_layer_get_interface(layer_type)->paste_item ( sel, subtype, clipboard );
+
+  /* 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;
+
+      //      printf("Trying >>>>> %s\n", cand);
+
+      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;
+      }
     }
-    else
-      a_dialog_error_msg_extra ( VIK_GTK_WINDOW_FROM_WIDGET(GTK_WIDGET(vlp)), "The clipboard contains sublayer data for a %s layers. You must select a layer of this type to paste the clipboard data.", vik_layer_get_interface(layer_type)->name );
-    return FALSE;
+  }
+  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;
 }
 
-void a_clipboard_uninit ()
+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)
 {
-  if ( clipboard && type == DATA_LAYER )
-    g_object_unref ( G_OBJECT(clipboard) );
-  else if ( clipboard && type == DATA_SUBLAYER )
-    if ( vik_layer_get_interface(layer_type)->free_copied_item )
-      vik_layer_get_interface(layer_type)->free_copied_item(subtype,clipboard);
-  clipboard = NULL;
-  type = DATA_NONE;
+  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;
+  guint 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 );
+
+  if ( vik_treeview_item_get_type ( sel->vt, &iter ) == VIK_TREEVIEW_TYPE_SUBLAYER ) {
+    type = VIK_CLIPBOARD_DATA_SUBLAYER;
+    layer_type = sel->type;
+    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
+  {
+    type = VIK_CLIPBOARD_DATA_LAYER;
+    vik_layer_marshall ( sel, &data, &len );
+  }
+
+  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;
+}
+