src/viktrwlayer_propwin.c

   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) 2005-2007, Alex Foobarian <foobarian@gmail.com>
   6  * Copyright (C) 2007-2008, Quy Tonthat <qtonthat@gmail.com>
   7  * Copyright (C) 2011, Rob Norris <rw_norris@hotmail.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22  *
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #ifdef HAVE_MATH_H
  30 #include <math.h>
  31 #endif
  32
  33 #include <gtk/gtk.h>
  34 #include <glib/gi18n.h>
  35 #include <time.h>
  36 #ifdef HAVE_STRING_H
  37 #include <string.h>
  38 #endif
  39 #include "coords.h"
  40 #include "vikcoord.h"
  41 #include "viktrack.h"
  42 #include "viktrwlayer.h"
  43 #include "viktrwlayer_propwin.h"
  44 #include "vikwaypoint.h"
  45 #include "dialog.h"
  46 #include "globals.h"
  47 #include "dems.h"
  48
  49 #include "vikviewport.h" /* ugh */
  50 #include "viktreeview.h" /* ugh */
  51 #include <gdk-pixbuf/gdk-pixdata.h>
  52 #include "viklayer.h" /* ugh */
  53 #include "vikaggregatelayer.h"
  54 #include "viklayerspanel.h" /* ugh */
  55
  56 #define PROPWIN_PROFILE_WIDTH 600
  57 #define PROPWIN_PROFILE_HEIGHT 300
  58
  59 #define PROPWIN_LABEL_FONT "Sans 7"
  60
  61 typedef enum {
  62   PROPWIN_GRAPH_TYPE_ELEVATION_DISTANCE,
  63   PROPWIN_GRAPH_TYPE_SPEED_TIME,
  64   PROPWIN_GRAPH_TYPE_DISTANCE_TIME,
  65   PROPWIN_GRAPH_TYPE_ELEVATION_TIME,
  66   PROPWIN_GRAPH_TYPE_END,
  67 } VikPropWinGraphType_t;
  68
  69 /* (Hopefully!) Human friendly altitude grid sizes - note no fixed 'ratio' just numbers that look nice...*/
  70 static const gdouble chunksa[] = {2.0, 5.0, 10.0, 15.0, 20.0,
  71                                   25.0, 50.0, 75.0, 100.0,
  72                                   150.0, 200.0, 250.0, 375.0, 500.0,
  73                                   750.0, 1000.0, 2000.0, 5000.0, 10000.0, 100000.0};
  74
  75 /* (Hopefully!) Human friendly grid sizes - note no fixed 'ratio' just numbers that look nice...*/
  76 /* As need to cover walking speeds - have many low numbers (but also may go up to airplane speeds!) */
  77 static const gdouble chunkss[] = {1.0, 2.0, 3.0, 4.0, 5.0, 8.0, 10.0,
  78                                   15.0, 20.0, 25.0, 40.0, 50.0, 75.0,
  79                                   100.0, 150.0, 200.0, 250.0, 375.0, 500.0,
  80                                   750.0, 1000.0, 10000.0};
  81
  82 /* (Hopefully!) Human friendly distance grid sizes - note no fixed 'ratio' just numbers that look nice...*/
  83 static const gdouble chunksd[] = {0.1, 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, 8.0, 10.0,
  84                                   15.0, 20.0, 25.0, 40.0, 50.0, 75.0,
  85                                   100.0, 150.0, 200.0, 250.0, 375.0, 500.0,
  86                                   750.0, 1000.0, 10000.0};
  87
  88 typedef struct _propsaved {
  89   gboolean saved;
  90   GdkImage *img;
  91 } PropSaved;
  92
  93 typedef struct _propwidgets {
  94   gboolean  configure_dialog;
  95   VikTrwLayer *vtl;
  96   VikTrack *tr;
  97   gchar *track_name;
  98   gint      profile_width;
  99   gint      profile_height;
 100   gint      profile_width_old;
 101   gint      profile_height_old;
 102   gint      profile_width_offset;
 103   gint      profile_height_offset;
 104   GtkWidget *dialog;
 105   GtkWidget *w_comment;
 106   GtkWidget *w_track_length;
 107   GtkWidget *w_tp_count;
 108   GtkWidget *w_segment_count;
 109   GtkWidget *w_duptp_count;
 110   GtkWidget *w_max_speed;
 111   GtkWidget *w_avg_speed;
 112   GtkWidget *w_avg_dist;
 113   GtkWidget *w_elev_range;
 114   GtkWidget *w_elev_gain;
 115   GtkWidget *w_time_start;
 116   GtkWidget *w_time_end;
 117   GtkWidget *w_time_dur;
 118   GtkWidget *w_cur_dist; /*< Current distance */
 119   GtkWidget *w_cur_elevation;
 120   GtkWidget *w_cur_time; /*< Current time */
 121   GtkWidget *w_cur_speed;
 122   GtkWidget *w_cur_dist_dist; /*< Current distance on distance graph */
 123   GtkWidget *w_cur_dist_time; /*< Current time on distance graph */
 124   GtkWidget *w_cur_elev_elev;
 125   GtkWidget *w_cur_elev_time;
 126   GtkWidget *w_show_dem;
 127   GtkWidget *w_show_alt_gps_speed;
 128   GtkWidget *w_show_gps_speed;
 129   GtkWidget *w_show_dist_speed;
 130   GtkWidget *w_show_elev_speed;
 131   gdouble   track_length;
 132   PropSaved elev_graph_saved_img;
 133   PropSaved speed_graph_saved_img;
 134   PropSaved dist_graph_saved_img;
 135   PropSaved elev_time_graph_saved_img;
 136   GtkWidget *elev_box;
 137   GtkWidget *speed_box;
 138   GtkWidget *dist_box;
 139   GtkWidget *elev_time_box;
 140   gdouble   *altitudes;
 141   gdouble   *ats; // altitudes in time
 142   gdouble   min_altitude;
 143   gdouble   max_altitude;
 144   gdouble   draw_min_altitude;
 145   gint      cia; // Chunk size Index into Altitudes
 146   gdouble   *speeds;
 147   gdouble   min_speed;
 148   gdouble   max_speed;
 149   gdouble   draw_min_speed;
 150   gint      cis; // Chunk size Index into Speeds
 151   gdouble   *distances;
 152   gint      cid; // Chunk size Index into Distance
 153   VikTrackpoint *marker_tp;
 154   gboolean  is_marker_drawn;
 155   VikTrackpoint *blob_tp;
 156   gboolean  is_blob_drawn;
 157 } PropWidgets;
 158
 159 static PropWidgets *prop_widgets_new()
 160 {
 161   PropWidgets *widgets = g_malloc0(sizeof(PropWidgets));
 162
 163   return widgets;
 164 }
 165
 166 static void prop_widgets_free(PropWidgets *widgets)
 167 {
 168   if (widgets->elev_graph_saved_img.img)
 169     g_object_unref(widgets->elev_graph_saved_img.img);
 170   if (widgets->speed_graph_saved_img.img)
 171     g_object_unref(widgets->speed_graph_saved_img.img);
 172   if (widgets->dist_graph_saved_img.img)
 173     g_object_unref(widgets->dist_graph_saved_img.img);
 174   if (widgets->elev_time_graph_saved_img.img)
 175     g_object_unref(widgets->elev_time_graph_saved_img.img);
 176   if (widgets->altitudes)
 177     g_free(widgets->altitudes);
 178   if (widgets->speeds)
 179     g_free(widgets->speeds);
 180   if (widgets->distances)
 181     g_free(widgets->distances);
 182   if (widgets->ats)
 183     g_free(widgets->ats);
 184   g_free(widgets);
 185 }
 186
 187 static void minmax_array(const gdouble *array, gdouble *min, gdouble *max, gboolean NO_ALT_TEST, gint PROFILE_WIDTH)
 188 {
 189   *max = -1000;
 190   *min = 20000;
 191   guint i;
 192   for ( i=0; i < PROFILE_WIDTH; i++ ) {
 193     if ( NO_ALT_TEST || (array[i] != VIK_DEFAULT_ALTITUDE) ) {
 194       if ( array[i] > *max )
 195         *max = array[i];
 196       if ( array[i] < *min )
 197         *min = array[i];
 198     }
 199   }
 200 }
 201
 202 #define MARGIN 70
 203 #define LINES 5
 204 /**
 205  * Returns via pointers:
 206  *   the new minimum value to be used for the altitude graph
 207  *   the index in to the altitudes chunk sizes array (ci = Chunk Index)
 208  */
 209 static void get_new_min_and_chunk_index_altitude (gdouble mina, gdouble maxa, gdouble *new_min, gint *ci)
 210 {
 211   /* Get unitized chunk */
 212   /* Find suitable chunk index */
 213   *ci = 0;
 214   gdouble diffa_chunk = (maxa - mina)/LINES;
 215
 216   /* Loop through to find best match */
 217   while (diffa_chunk > chunksa[*ci]) {
 218     (*ci)++;
 219     /* Last Resort Check */
 220     if ( *ci == sizeof(chunksa)/sizeof(chunksa[0]) )
 221       break;
 222   }
 223
 224   /* Ensure adjusted minimum .. maximum covers mina->maxa */
 225
 226   // Now work out adjusted minimum point to the nearest lowest chunk divisor value
 227   // When negative ensure logic uses lowest value
 228   if ( mina < 0 )
 229     *new_min = (gdouble) ( ( (gint)(mina - chunksa[*ci]) / (gint)chunksa[*ci] ) * (gint)chunksa[*ci] );
 230   else
 231     *new_min = (gdouble) ( ( (gint)mina / (gint)chunksa[*ci] ) * (gint)chunksa[*ci] );
 232
 233   // Range not big enough - as new minimum has lowered
 234   if ((*new_min + (chunksa[*ci] * LINES) < maxa)) {
 235     // Next chunk should cover it
 236     if ( *ci < sizeof(chunksa)/sizeof(chunksa[0]) ) {
 237       (*ci)++;
 238     }
 239   }
 240 }
 241
 242 /**
 243  * Returns via pointers:
 244  *   the new minimum value to be used for the appropriate graph
 245  *   the index in to that array (ci = Chunk Index)
 246  */
 247 static void get_new_min_and_chunk_index (gdouble mins, gdouble maxs, const gdouble *chunks, size_t chunky, gdouble *new_min, gint *ci)
 248 {
 249   *ci = 0;
 250   gdouble diff_chunk = (maxs - mins)/LINES;
 251
 252   /* Loop through to find best match */
 253   while (diff_chunk > chunks[*ci]) {
 254     (*ci)++;
 255     /* Last Resort Check */
 256     if ( *ci == chunky )
 257       break;
 258   }
 259   *new_min = (gdouble) ( (gint)((mins / chunks[*ci] ) * chunks[*ci]) );
 260
 261   // Speeds are never negative so don't need to worry about a negative new minimum
 262 }
 263
 264 static VikTrackpoint *set_center_at_graph_position(gdouble event_x,
 265                                                    gint img_width,
 266                                                    VikTrwLayer *vtl,
 267                                                    VikLayersPanel *vlp,
 268                                                    VikViewport *vvp,
 269                                                    VikTrack *tr,
 270                                                    gboolean time_base,
 271                                                    gint PROFILE_WIDTH)
 272 {
 273   VikTrackpoint *trackpoint;
 274   gdouble x = event_x - img_width / 2 + PROFILE_WIDTH / 2 - MARGIN / 2;
 275   if (x < 0)
 276     x = 0;
 277   if (x > PROFILE_WIDTH)
 278     x = PROFILE_WIDTH;
 279
 280   if (time_base)
 281     trackpoint = vik_track_get_closest_tp_by_percentage_time ( tr, (gdouble) x / PROFILE_WIDTH, NULL );
 282   else
 283     trackpoint = vik_track_get_closest_tp_by_percentage_dist ( tr, (gdouble) x / PROFILE_WIDTH, NULL );
 284
 285   if ( trackpoint ) {
 286     VikCoord coord = trackpoint->coord;
 287     if ( vlp ) {
 288       vik_viewport_set_center_coord ( vik_layers_panel_get_viewport(vlp), &coord );
 289       vik_layers_panel_emit_update ( vlp );
 290     }
 291     else {
 292       /* since vlp not set, vvp should be valid instead! */
 293       if ( vvp )
 294         vik_viewport_set_center_coord ( vvp, &coord );
 295       vik_layer_emit_update ( VIK_LAYER(vtl) );
 296     }
 297   }
 298   return trackpoint;
 299 }
 300
 301 /**
 302  * Returns whether the marker was drawn or not and whether the blob was drawn or not
 303  */
 304 static void save_image_and_draw_graph_marks (GtkWidget *image,
 305                                              gdouble marker_x,
 306                                              GdkGC *gc,
 307                                              gint blob_x,
 308                                              gint blob_y,
 309                                              PropSaved *saved_img,
 310                                              gint PROFILE_WIDTH,
 311                                              gint PROFILE_HEIGHT,
 312                                              gboolean *marker_drawn,
 313                                              gboolean *blob_drawn)
 314 {
 315   GdkPixmap *pix = NULL;
 316   /* the pixmap = margin + graph area */
 317   gtk_image_get_pixmap(GTK_IMAGE(image), &pix, NULL);
 318
 319   /* Restore previously saved image */
 320   if (saved_img->saved) {
 321     gdk_draw_image(GDK_DRAWABLE(pix), gc, saved_img->img, 0, 0, 0, 0, MARGIN+PROFILE_WIDTH, PROFILE_HEIGHT);
 322     saved_img->saved = FALSE;
 323   }
 324
 325   // ATM always save whole image - as anywhere could have changed
 326   if (saved_img->img)
 327     gdk_drawable_copy_to_image(GDK_DRAWABLE(pix), saved_img->img, 0, 0, 0, 0, MARGIN+PROFILE_WIDTH, PROFILE_HEIGHT);
 328   else
 329     saved_img->img = gdk_drawable_copy_to_image(GDK_DRAWABLE(pix), saved_img->img, 0, 0, 0, 0, MARGIN+PROFILE_WIDTH, PROFILE_HEIGHT);
 330   saved_img->saved = TRUE;
 331
 332   if ((marker_x >= MARGIN) && (marker_x < (PROFILE_WIDTH + MARGIN))) {
 333     gdk_draw_line (GDK_DRAWABLE(pix), gc, marker_x, 0, marker_x, image->allocation.height);
 334     *marker_drawn = TRUE;
 335   }
 336   else
 337     *marker_drawn = FALSE;
 338
 339   // Draw a square blob to indicate where we are on track for this graph
 340   if ( (blob_x >= MARGIN) && (blob_x < (PROFILE_WIDTH + MARGIN)) && (blob_y < PROFILE_HEIGHT) ) {
 341     gdk_draw_rectangle (GDK_DRAWABLE(pix), gc, TRUE, blob_x-3, blob_y-3, 6, 6);
 342     *blob_drawn = TRUE;
 343   }
 344   else
 345     *blob_drawn = FALSE;
 346
 347   // Anywhere on image could have changed
 348   if (*marker_drawn || *blob_drawn)
 349     gtk_widget_queue_draw(image);
 350 }
 351
 352 /**
 353  * Return the percentage of how far a trackpoint is a long a track via the time method
 354  */
 355 static gdouble tp_percentage_by_time ( VikTrack *tr, VikTrackpoint *trackpoint )
 356 {
 357   gdouble pc = NAN;
 358   if (trackpoint == NULL)
 359     return pc;
 360   time_t t_start, t_end, t_total;
 361   t_start = VIK_TRACKPOINT(tr->trackpoints->data)->timestamp;
 362   t_end = VIK_TRACKPOINT(g_list_last(tr->trackpoints)->data)->timestamp;
 363   t_total = t_end - t_start;
 364   pc = (gdouble)(trackpoint->timestamp - t_start)/t_total;
 365   return pc;
 366 }
 367
 368 /**
 369  * Return the percentage of how far a trackpoint is a long a track via the distance method
 370  */
 371 static gdouble tp_percentage_by_distance ( VikTrack *tr, VikTrackpoint *trackpoint, gdouble track_length )
 372 {
 373   gdouble pc = NAN;
 374   if (trackpoint == NULL)
 375     return pc;
 376   gdouble dist = 0.0;
 377   GList *iter;
 378   for (iter = tr->trackpoints->next; iter != NULL; iter = iter->next) {
 379     dist += vik_coord_diff(&(VIK_TRACKPOINT(iter->data)->coord),
 380                            &(VIK_TRACKPOINT(iter->prev->data)->coord));
 381     /* Assuming trackpoint is not a copy */
 382     if (trackpoint == VIK_TRACKPOINT(iter->data))
 383       break;
 384   }
 385   if (iter != NULL)
 386     pc = dist/track_length;
 387   return pc;
 388 }
 389
 390 static void track_graph_click( GtkWidget *event_box, GdkEventButton *event, gpointer *pass_along, VikPropWinGraphType_t graph_type )
 391 {
 392   VikTrack *tr = pass_along[0];
 393   VikLayersPanel *vlp = pass_along[1];
 394   VikViewport *vvp = pass_along[2];
 395   PropWidgets *widgets = pass_along[3];
 396
 397   gboolean is_time_graph = graph_type != PROPWIN_GRAPH_TYPE_ELEVATION_DISTANCE;
 398
 399   VikTrackpoint *trackpoint = set_center_at_graph_position(event->x, event_box->allocation.width, widgets->vtl, vlp, vvp, tr, is_time_graph, widgets->profile_width);
 400   // Unable to get the point so give up
 401   if ( trackpoint == NULL ) {
 402     gtk_dialog_set_response_sensitive(GTK_DIALOG(widgets->dialog), VIK_TRW_LAYER_PROPWIN_SPLIT_MARKER, FALSE);
 403     return;
 404   }
 405
 406   widgets->marker_tp = trackpoint;
 407
 408   GList *child;
 409   GtkWidget *image;
 410   GtkWidget *window = gtk_widget_get_toplevel(GTK_WIDGET(event_box));
 411   GtkWidget *graph_box;
 412   PropSaved *graph_saved_img;
 413   gdouble pc = NAN;
 414
 415   // Attempt to redraw marker on all graph types
 416   gint graphite;
 417   for ( graphite = PROPWIN_GRAPH_TYPE_ELEVATION_DISTANCE;
 418         graphite < PROPWIN_GRAPH_TYPE_END;
 419         graphite++ ) {
 420
 421     // Switch commonal variables to particular graph type
 422     switch (graphite) {
 423     default:
 424     case PROPWIN_GRAPH_TYPE_ELEVATION_DISTANCE:
 425       graph_box       = widgets->elev_box;
 426       graph_saved_img = &widgets->elev_graph_saved_img;
 427       is_time_graph   = FALSE;
 428       break;
 429     case PROPWIN_GRAPH_TYPE_SPEED_TIME:
 430       graph_box       = widgets->speed_box;
 431       graph_saved_img = &widgets->speed_graph_saved_img;
 432       is_time_graph   = TRUE;
 433       break;
 434     case PROPWIN_GRAPH_TYPE_DISTANCE_TIME:
 435       graph_box       = widgets->dist_box;
 436       graph_saved_img = &widgets->dist_graph_saved_img;
 437       is_time_graph   = TRUE;
 438       break;
 439     case PROPWIN_GRAPH_TYPE_ELEVATION_TIME:
 440       graph_box       = widgets->elev_time_box;
 441       graph_saved_img = &widgets->elev_time_graph_saved_img;
 442       is_time_graph   = TRUE;
 443       break;
 444     }
 445
 446     // Commonal method of redrawing marker
 447     if ( graph_box ) {
 448
 449       child = gtk_container_get_children(GTK_CONTAINER(graph_box));
 450       image = GTK_WIDGET(child->data);
 451
 452       if (is_time_graph)
 453         pc = tp_percentage_by_time ( tr, trackpoint );
 454       else
 455         pc = tp_percentage_by_distance ( tr, trackpoint, widgets->track_length );
 456
 457       if (!isnan(pc)) {
 458         gdouble marker_x = (pc * widgets->profile_width) + MARGIN;
 459         save_image_and_draw_graph_marks(image,
 460                                         marker_x,
 461                                         window->style->black_gc,
 462                                         -1, // Don't draw blob on clicks
 463                                         0,
 464                                         graph_saved_img,
 465                                         widgets->profile_width,
 466                                         widgets->profile_height,
 467                                         &widgets->is_marker_drawn,
 468                                         &widgets->is_blob_drawn);
 469       }
 470       g_list_free(child);
 471     }
 472   }
 473
 474   gtk_dialog_set_response_sensitive(GTK_DIALOG(widgets->dialog), VIK_TRW_LAYER_PROPWIN_SPLIT_MARKER, widgets->is_marker_drawn);
 475 }
 476
 477 static gboolean track_profile_click( GtkWidget *event_box, GdkEventButton *event, gpointer *pass_along )
 478 {
 479   track_graph_click(event_box, event, pass_along, PROPWIN_GRAPH_TYPE_ELEVATION_DISTANCE);
 480   return TRUE;  /* don't call other (further) callbacks */
 481 }
 482
 483 static gboolean track_vt_click( GtkWidget *event_box, GdkEventButton *event, gpointer *pass_along )
 484 {
 485   track_graph_click(event_box, event, pass_along, PROPWIN_GRAPH_TYPE_SPEED_TIME);
 486   return TRUE;  /* don't call other (further) callbacks */
 487 }
 488
 489 static gboolean track_dt_click( GtkWidget *event_box, GdkEventButton *event, gpointer *pass_along )
 490 {
 491   track_graph_click(event_box, event, pass_along, PROPWIN_GRAPH_TYPE_DISTANCE_TIME);
 492   return TRUE;  /* don't call other (further) callbacks */
 493 }
 494
 495 static gboolean track_et_click( GtkWidget *event_box, GdkEventButton *event, gpointer *pass_along )
 496 {
 497   track_graph_click(event_box, event, pass_along, PROPWIN_GRAPH_TYPE_ELEVATION_TIME);
 498   return TRUE;  /* don't call other (further) callbacks */
 499 }
 500
 501 /**
 502  * Calculate y position for blob on elevation graph
 503  */
 504 static gint blobby_altitude ( gdouble x_blob, PropWidgets *widgets )
 505 {
 506   gint ix = (gint)x_blob;
 507   // Ensure ix is inbounds
 508   if (ix == widgets->profile_width)
 509     ix--;
 510
 511   gint y_blob = widgets->profile_height-widgets->profile_height*(widgets->altitudes[ix]-widgets->draw_min_altitude)/(chunksa[widgets->cia]*LINES);
 512
 513   return y_blob;
 514 }
 515
 516 /**
 517  * Calculate y position for blob on speed graph
 518  */
 519 static gint blobby_speed ( gdouble x_blob, PropWidgets *widgets )
 520 {
 521   gint ix = (gint)x_blob;
 522   // Ensure ix is inbounds
 523   if (ix == widgets->profile_width)
 524     ix--;
 525
 526   gint y_blob = widgets->profile_height-widgets->profile_height*(widgets->speeds[ix]-widgets->draw_min_speed)/(chunkss[widgets->cis]*LINES);
 527
 528   return y_blob;
 529 }
 530
 531 /**
 532  * Calculate y position for blob on distance graph
 533  */
 534 static gint blobby_distance ( gdouble x_blob, PropWidgets *widgets )
 535 {
 536   gint ix = (gint)x_blob;
 537   // Ensure ix is inbounds
 538   if (ix == widgets->profile_width)
 539     ix--;
 540
 541   gint y_blob = widgets->profile_height-widgets->profile_height*(widgets->distances[ix])/(chunksd[widgets->cid]*LINES);
 542   //NB min distance is always 0, so no need to subtract that from this  ______/
 543
 544   return y_blob;
 545 }
 546
 547 /**
 548  * Calculate y position for blob on elevation/time graph
 549  */
 550 static gint blobby_altitude_time ( gdouble x_blob, PropWidgets *widgets )
 551 {
 552   gint ix = (gint)x_blob;
 553   // Ensure ix is inbounds
 554   if (ix == widgets->profile_width)
 555     ix--;
 556
 557   gint y_blob = widgets->profile_height-widgets->profile_height*(widgets->ats[ix]-widgets->draw_min_altitude)/(chunksa[widgets->cia]*LINES);
 558   // only difference here [could refactor]?          _____________________/
 559   return y_blob;
 560 }
 561
 562
 563 void track_profile_move( GtkWidget *event_box, GdkEventMotion *event, gpointer *pass_along )
 564 {
 565   VikTrack *tr = pass_along[0];
 566   PropWidgets *widgets = pass_along[3];
 567   int mouse_x, mouse_y;
 568   GdkModifierType state;
 569
 570   if (event->is_hint)
 571     gdk_window_get_pointer (event->window, &mouse_x, &mouse_y, &state);
 572   else
 573     mouse_x = event->x;
 574
 575   gdouble x = mouse_x - event_box->allocation.width / 2 + widgets->profile_width / 2 - MARGIN / 2;
 576   if (x < 0)
 577     x = 0;
 578   if (x > widgets->profile_width)
 579     x = widgets->profile_width;
 580
 581   gdouble meters_from_start;
 582   VikTrackpoint *trackpoint = vik_track_get_closest_tp_by_percentage_dist ( tr, (gdouble) x / widgets->profile_width, &meters_from_start );
 583   if (trackpoint && widgets->w_cur_dist) {
 584     static gchar tmp_buf[20];
 585     vik_units_distance_t dist_units = a_vik_get_units_distance ();
 586     switch (dist_units) {
 587     case VIK_UNITS_DISTANCE_KILOMETRES:
 588       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f km", meters_from_start/1000.0);
 589       break;
 590     case VIK_UNITS_DISTANCE_MILES:
 591       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f miles", VIK_METERS_TO_MILES(meters_from_start) );
 592       break;
 593     default:
 594       g_critical("Houston, we've had a problem. distance=%d", dist_units);
 595     }
 596     gtk_label_set_text(GTK_LABEL(widgets->w_cur_dist), tmp_buf);
 597   }
 598
 599   // Show track elevation for this position - to the nearest whole number
 600   if (trackpoint && widgets->w_cur_elevation) {
 601     static gchar tmp_buf[20];
 602     if (a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET)
 603       g_snprintf(tmp_buf, sizeof(tmp_buf), "%d ft", (int)VIK_METERS_TO_FEET(trackpoint->altitude));
 604     else
 605       g_snprintf(tmp_buf, sizeof(tmp_buf), "%d m", (int)trackpoint->altitude);
 606     gtk_label_set_text(GTK_LABEL(widgets->w_cur_elevation), tmp_buf);
 607   }
 608
 609   widgets->blob_tp = trackpoint;
 610
 611   if ( widgets->altitudes == NULL )
 612     return;
 613
 614   GtkWidget *window = gtk_widget_get_toplevel (event_box);
 615   GList *child = gtk_container_get_children(GTK_CONTAINER(event_box));
 616   GtkWidget *image = GTK_WIDGET(child->data);
 617
 618   gint y_blob = blobby_altitude (x, widgets);
 619
 620   gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
 621   if (widgets->is_marker_drawn) {
 622     gdouble pc = tp_percentage_by_distance ( tr, widgets->marker_tp, widgets->track_length );
 623     if (!isnan(pc)) {
 624       marker_x = (pc * widgets->profile_width) + MARGIN;
 625     }
 626   }
 627
 628   save_image_and_draw_graph_marks (image,
 629                                    marker_x,
 630                                    window->style->black_gc,
 631                                    MARGIN+x,
 632                                    y_blob,
 633                                    &widgets->elev_graph_saved_img,
 634                                    widgets->profile_width,
 635                                    widgets->profile_height,
 636                                    &widgets->is_marker_drawn,
 637                                    &widgets->is_blob_drawn);
 638
 639   g_list_free(child);
 640 }
 641
 642 void track_vt_move( GtkWidget *event_box, GdkEventMotion *event, gpointer *pass_along )
 643 {
 644   VikTrack *tr = pass_along[0];
 645   PropWidgets *widgets = pass_along[3];
 646   int mouse_x, mouse_y;
 647   GdkModifierType state;
 648
 649   if (event->is_hint)
 650     gdk_window_get_pointer (event->window, &mouse_x, &mouse_y, &state);
 651   else
 652     mouse_x = event->x;
 653
 654   gdouble x = mouse_x - event_box->allocation.width / 2 + widgets->profile_width / 2 - MARGIN / 2;
 655   if (x < 0)
 656     x = 0;
 657   if (x > widgets->profile_width)
 658     x = widgets->profile_width;
 659
 660   time_t seconds_from_start;
 661   VikTrackpoint *trackpoint = vik_track_get_closest_tp_by_percentage_time ( tr, (gdouble) x / widgets->profile_width, &seconds_from_start );
 662   if (trackpoint && widgets->w_cur_time) {
 663     static gchar tmp_buf[20];
 664     guint h, m, s;
 665     h = seconds_from_start/3600;
 666     m = (seconds_from_start - h*3600)/60;
 667     s = seconds_from_start - (3600*h) - (60*m);
 668     g_snprintf(tmp_buf, sizeof(tmp_buf), "%02d:%02d:%02d", h, m, s);
 669
 670     gtk_label_set_text(GTK_LABEL(widgets->w_cur_time), tmp_buf);
 671   }
 672
 673   gint ix = (gint)x;
 674   // Ensure ix is inbounds
 675   if (ix == widgets->profile_width)
 676     ix--;
 677
 678   // Show track speed for this position
 679   if (trackpoint && widgets->w_cur_speed) {
 680     static gchar tmp_buf[20];
 681     // Even if GPS speed available (trackpoint->speed), the text will correspond to the speed map shown
 682     // No conversions needed as already in appropriate units
 683     vik_units_speed_t speed_units = a_vik_get_units_speed ();
 684     switch (speed_units) {
 685     case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
 686       g_snprintf(tmp_buf, sizeof(tmp_buf), _("%.1f kph"), widgets->speeds[ix]);
 687       break;
 688     case VIK_UNITS_SPEED_MILES_PER_HOUR:
 689       g_snprintf(tmp_buf, sizeof(tmp_buf), _("%.1f mph"), widgets->speeds[ix]);
 690       break;
 691     case VIK_UNITS_SPEED_KNOTS:
 692       g_snprintf(tmp_buf, sizeof(tmp_buf), _("%.1f knots"), widgets->speeds[ix]);
 693       break;
 694     default:
 695       // VIK_UNITS_SPEED_METRES_PER_SECOND:
 696       g_snprintf(tmp_buf, sizeof(tmp_buf), _("%.1f m/s"), widgets->speeds[ix]);
 697       break;
 698     }
 699     gtk_label_set_text(GTK_LABEL(widgets->w_cur_speed), tmp_buf);
 700   }
 701
 702   widgets->blob_tp = trackpoint;
 703
 704   if ( widgets->speeds == NULL )
 705     return;
 706
 707   GtkWidget *window = gtk_widget_get_toplevel (event_box);
 708   GList *child = gtk_container_get_children(GTK_CONTAINER(event_box));
 709   GtkWidget *image = GTK_WIDGET(child->data);
 710
 711   gint y_blob = blobby_speed (x, widgets);
 712
 713   gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
 714   if (widgets->is_marker_drawn) {
 715     gdouble pc = tp_percentage_by_time ( tr, widgets->marker_tp );
 716     if (!isnan(pc)) {
 717       marker_x = (pc * widgets->profile_width) + MARGIN;
 718     }
 719   }
 720
 721   save_image_and_draw_graph_marks (image,
 722                                    marker_x,
 723                                    window->style->black_gc,
 724                                    MARGIN+x,
 725                                    y_blob,
 726                                    &widgets->speed_graph_saved_img,
 727                                    widgets->profile_width,
 728                                    widgets->profile_height,
 729                                    &widgets->is_marker_drawn,
 730                                    &widgets->is_blob_drawn);
 731
 732   g_list_free(child);
 733 }
 734
 735 /**
 736  * Update labels and blob marker on mouse moves in the distance/time graph
 737  */
 738 void track_dt_move( GtkWidget *event_box, GdkEventMotion *event, gpointer *pass_along )
 739 {
 740   VikTrack *tr = pass_along[0];
 741   PropWidgets *widgets = pass_along[3];
 742   int mouse_x, mouse_y;
 743   GdkModifierType state;
 744
 745   if (event->is_hint)
 746     gdk_window_get_pointer (event->window, &mouse_x, &mouse_y, &state);
 747   else
 748     mouse_x = event->x;
 749
 750   gdouble x = mouse_x - event_box->allocation.width / 2 + widgets->profile_width / 2 - MARGIN / 2;
 751   if (x < 0)
 752     x = 0;
 753   if (x > widgets->profile_width)
 754     x = widgets->profile_width;
 755
 756   time_t seconds_from_start;
 757   VikTrackpoint *trackpoint = vik_track_get_closest_tp_by_percentage_time ( tr, (gdouble) x / widgets->profile_width, &seconds_from_start );
 758   if (trackpoint && widgets->w_cur_dist_time) {
 759     static gchar tmp_buf[20];
 760     guint h, m, s;
 761     h = seconds_from_start/3600;
 762     m = (seconds_from_start - h*3600)/60;
 763     s = seconds_from_start - (3600*h) - (60*m);
 764     g_snprintf(tmp_buf, sizeof(tmp_buf), "%02d:%02d:%02d", h, m, s);
 765
 766     gtk_label_set_text(GTK_LABEL(widgets->w_cur_dist_time), tmp_buf);
 767   }
 768
 769   gint ix = (gint)x;
 770   // Ensure ix is inbounds
 771   if (ix == widgets->profile_width)
 772     ix--;
 773
 774   if (trackpoint && widgets->w_cur_dist_dist) {
 775     static gchar tmp_buf[20];
 776     if ( a_vik_get_units_distance () == VIK_UNITS_DISTANCE_MILES )
 777       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f miles", widgets->distances[ix]);
 778     else
 779       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f km", widgets->distances[ix]);
 780     gtk_label_set_text(GTK_LABEL(widgets->w_cur_dist_dist), tmp_buf);
 781   }
 782
 783   widgets->blob_tp = trackpoint;
 784
 785   if ( widgets->distances == NULL )
 786     return;
 787
 788   GtkWidget *window = gtk_widget_get_toplevel (event_box);
 789   GList *child = gtk_container_get_children(GTK_CONTAINER(event_box));
 790   GtkWidget *image = GTK_WIDGET(child->data);
 791
 792   gint y_blob = blobby_distance (x, widgets);
 793
 794   gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
 795   if (widgets->is_marker_drawn) {
 796     gdouble pc = tp_percentage_by_time ( tr, widgets->marker_tp );
 797     if (!isnan(pc)) {
 798       marker_x = (pc * widgets->profile_width) + MARGIN;
 799     }
 800   }
 801
 802   save_image_and_draw_graph_marks (image,
 803                                    marker_x,
 804                                    window->style->black_gc,
 805                                    MARGIN+x,
 806                                    y_blob,
 807                                    &widgets->dist_graph_saved_img,
 808                                    widgets->profile_width,
 809                                    widgets->profile_height,
 810                                    &widgets->is_marker_drawn,
 811                                    &widgets->is_blob_drawn);
 812
 813   g_list_free(child);
 814 }
 815
 816 /**
 817  * Update labels and blob marker on mouse moves in the elevation/time graph
 818  */
 819 void track_et_move( GtkWidget *event_box, GdkEventMotion *event, gpointer *pass_along )
 820 {
 821   VikTrack *tr = pass_along[0];
 822   PropWidgets *widgets = pass_along[3];
 823   int mouse_x, mouse_y;
 824   GdkModifierType state;
 825
 826   if (event->is_hint)
 827     gdk_window_get_pointer (event->window, &mouse_x, &mouse_y, &state);
 828   else
 829     mouse_x = event->x;
 830
 831   gdouble x = mouse_x - event_box->allocation.width / 2 + widgets->profile_width / 2 - MARGIN / 2;
 832   if (x < 0)
 833     x = 0;
 834   if (x > widgets->profile_width)
 835     x = widgets->profile_width;
 836
 837   time_t seconds_from_start;
 838   VikTrackpoint *trackpoint = vik_track_get_closest_tp_by_percentage_time ( tr, (gdouble) x / widgets->profile_width, &seconds_from_start );
 839   if (trackpoint && widgets->w_cur_elev_time) {
 840     static gchar tmp_buf[20];
 841     guint h, m, s;
 842     h = seconds_from_start/3600;
 843     m = (seconds_from_start - h*3600)/60;
 844     s = seconds_from_start - (3600*h) - (60*m);
 845     g_snprintf(tmp_buf, sizeof(tmp_buf), "%02d:%02d:%02d", h, m, s);
 846
 847     gtk_label_set_text(GTK_LABEL(widgets->w_cur_elev_time), tmp_buf);
 848   }
 849
 850   gint ix = (gint)x;
 851   // Ensure ix is inbounds
 852   if (ix == widgets->profile_width)
 853     ix--;
 854
 855   if (trackpoint && widgets->w_cur_elev_elev) {
 856     static gchar tmp_buf[20];
 857     if (a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET)
 858       g_snprintf(tmp_buf, sizeof(tmp_buf), "%d ft", (int)VIK_METERS_TO_FEET(trackpoint->altitude));
 859     else
 860       g_snprintf(tmp_buf, sizeof(tmp_buf), "%d m", (int)trackpoint->altitude);
 861     gtk_label_set_text(GTK_LABEL(widgets->w_cur_elev_elev), tmp_buf);
 862   }
 863
 864   widgets->blob_tp = trackpoint;
 865
 866   if ( widgets->ats == NULL )
 867     return;
 868
 869   GtkWidget *window = gtk_widget_get_toplevel (event_box);
 870   GList *child = gtk_container_get_children(GTK_CONTAINER(event_box));
 871   GtkWidget *image = GTK_WIDGET(child->data);
 872
 873   gint y_blob = blobby_altitude_time (x, widgets);
 874
 875   gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
 876   if (widgets->is_marker_drawn) {
 877     gdouble pc = tp_percentage_by_time ( tr, widgets->marker_tp );
 878     if (!isnan(pc)) {
 879       marker_x = (pc * widgets->profile_width) + MARGIN;
 880     }
 881   }
 882
 883   save_image_and_draw_graph_marks (image,
 884                                    marker_x,
 885                                    window->style->black_gc,
 886                                    MARGIN+x,
 887                                    y_blob,
 888                                    &widgets->elev_time_graph_saved_img,
 889                                    widgets->profile_width,
 890                                    widgets->profile_height,
 891                                    &widgets->is_marker_drawn,
 892                                    &widgets->is_blob_drawn);
 893
 894   g_list_free(child);
 895 }
 896
 897 /**
 898  * Draws DEM points and a respresentative speed on the supplied pixmap
 899  *   (which is the elevations graph)
 900  */
 901 static void draw_dem_alt_speed_dist(VikTrack *tr,
 902                                     GdkDrawable *pix,
 903                                     GdkGC *alt_gc,
 904                                     GdkGC *speed_gc,
 905                                     gdouble alt_offset,
 906                                     gdouble alt_diff,
 907                                     gdouble max_speed_in,
 908                                     gint cia,
 909                                     gint width,
 910                                     gint height,
 911                                     gint margin,
 912                                     gboolean do_dem,
 913                                     gboolean do_speed)
 914 {
 915   GList *iter;
 916   gdouble max_speed = 0;
 917   gdouble total_length = vik_track_get_length_including_gaps(tr);
 918
 919   // Calculate the max speed factor
 920   if (do_speed)
 921     max_speed = max_speed_in * 110 / 100;
 922
 923   gdouble dist = 0;
 924   for (iter = tr->trackpoints->next; iter; iter = iter->next) {
 925     int x;
 926     dist += vik_coord_diff ( &(VIK_TRACKPOINT(iter->data)->coord),
 927                              &(VIK_TRACKPOINT(iter->prev->data)->coord) );
 928     x = (width * dist)/total_length + margin;
 929     if (do_dem) {
 930       gint16 elev = a_dems_get_elev_by_coord(&(VIK_TRACKPOINT(iter->data)->coord), VIK_DEM_INTERPOL_BEST);
 931       elev -= alt_offset;
 932       if ( elev != VIK_DEM_INVALID_ELEVATION ) {
 933         // Convert into height units
 934         if (a_vik_get_units_height () == VIK_UNITS_HEIGHT_FEET)
 935           elev =  VIK_METERS_TO_FEET(elev);
 936         // No conversion needed if already in metres
 937
 938         // consider chunk size
 939         int y_alt = height - ((height * (elev-alt_offset))/(chunksa[cia]*LINES) );
 940         gdk_draw_rectangle(GDK_DRAWABLE(pix), alt_gc, TRUE, x-2, y_alt-2, 4, 4);
 941       }
 942     }
 943     if (do_speed) {
 944       // This is just a speed indicator - no actual values can be inferred by user
 945       if (!isnan(VIK_TRACKPOINT(iter->data)->speed)) {
 946         int y_speed = height - (height * VIK_TRACKPOINT(iter->data)->speed)/max_speed;
 947         gdk_draw_rectangle(GDK_DRAWABLE(pix), speed_gc, TRUE, x-2, y_speed-2, 4, 4);
 948       }
 949     }
 950   }
 951 }
 952
 953 /**
 954  * Draw just the height profile image
 955  */
 956 static void draw_elevations (GtkWidget *image, VikTrack *tr, PropWidgets *widgets )
 957 {
 958   GtkWidget *window;
 959   GdkPixmap *pix;
 960   gdouble mina, maxa;
 961   guint i;
 962
 963   GdkGC *no_alt_info;
 964   GdkGC *dem_alt_gc;
 965   GdkGC *gps_speed_gc;
 966
 967   GdkColor color;
 968
 969   // Free previous allocation
 970   if ( widgets->altitudes )
 971     g_free ( widgets->altitudes );
 972
 973   widgets->altitudes = vik_track_make_elevation_map ( tr, widgets->profile_width );
 974
 975   if ( widgets->altitudes == NULL )
 976     return;
 977
 978   // Convert into appropriate units
 979   vik_units_height_t height_units = a_vik_get_units_height ();
 980   if ( height_units == VIK_UNITS_HEIGHT_FEET ) {
 981     // Convert altitudes into feet units
 982     for ( i = 0; i < widgets->profile_width; i++ ) {
 983       widgets->altitudes[i] = VIK_METERS_TO_FEET(widgets->altitudes[i]);
 984     }
 985   }
 986   // Otherwise leave in metres
 987
 988   minmax_array(widgets->altitudes, &widgets->min_altitude, &widgets->max_altitude, TRUE, widgets->profile_width);
 989
 990   get_new_min_and_chunk_index_altitude (widgets->min_altitude, widgets->max_altitude, &widgets->draw_min_altitude, &widgets->cia);
 991
 992   // Assign locally
 993   mina = widgets->draw_min_altitude;
 994   maxa = widgets->max_altitude;
 995
 996   window = gtk_widget_get_toplevel (widgets->elev_box);
 997
 998   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
 999
1000   gtk_image_set_from_pixmap ( GTK_IMAGE(image), pix, NULL );
1001
1002   no_alt_info = gdk_gc_new ( window->window );
1003   gdk_color_parse ( "yellow", &color );
1004   gdk_gc_set_rgb_fg_color ( no_alt_info, &color);
1005
1006   dem_alt_gc = gdk_gc_new ( window->window );
1007   gdk_color_parse ( "green", &color );
1008   gdk_gc_set_rgb_fg_color ( dem_alt_gc, &color);
1009
1010   gps_speed_gc = gdk_gc_new ( window->window );
1011   gdk_color_parse ( "red", &color );
1012   gdk_gc_set_rgb_fg_color ( gps_speed_gc, &color);
1013
1014   /* clear the image */
1015   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->bg_gc[0],
1016                      TRUE, 0, 0, MARGIN, widgets->profile_height);
1017   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->mid_gc[0],
1018                      TRUE, MARGIN, 0, widgets->profile_width, widgets->profile_height);
1019
1020   /* draw grid */
1021   for (i=0; i<=LINES; i++) {
1022     PangoFontDescription *pfd;
1023     PangoLayout *pl = gtk_widget_create_pango_layout (GTK_WIDGET(image), NULL);
1024     gchar s[32];
1025     int w, h;
1026
1027     pango_layout_set_alignment (pl, PANGO_ALIGN_RIGHT);
1028     pfd = pango_font_description_from_string (PROPWIN_LABEL_FONT);
1029     pango_layout_set_font_description (pl, pfd);
1030     pango_font_description_free (pfd);
1031     switch (height_units) {
1032     case VIK_UNITS_HEIGHT_METRES:
1033       sprintf(s, "%8dm", (int)(mina + (LINES-i)*chunksa[widgets->cia]));
1034       break;
1035     case VIK_UNITS_HEIGHT_FEET:
1036       // NB values already converted into feet
1037       sprintf(s, "%8dft", (int)(mina + (LINES-i)*chunksa[widgets->cia]));
1038       break;
1039     default:
1040       sprintf(s, "--");
1041       g_critical("Houston, we've had a problem. height=%d", height_units);
1042     }
1043     pango_layout_set_text(pl, s, -1);
1044     pango_layout_get_pixel_size (pl, &w, &h);
1045     gdk_draw_layout(GDK_DRAWABLE(pix), window->style->fg_gc[0], MARGIN-w-3,
1046                     CLAMP((int)i*widgets->profile_height/LINES - h/2, 0, widgets->profile_height-h), pl);
1047
1048     gdk_draw_line (GDK_DRAWABLE(pix), window->style->dark_gc[0],
1049                    MARGIN, widgets->profile_height/LINES * i, MARGIN + widgets->profile_width, widgets->profile_height/LINES * i);
1050     g_object_unref ( G_OBJECT ( pl ) );
1051     pl = NULL;
1052   }
1053
1054   /* draw elevations */
1055   for ( i = 0; i < widgets->profile_width; i++ )
1056     if ( widgets->altitudes[i] == VIK_DEFAULT_ALTITUDE )
1057       gdk_draw_line ( GDK_DRAWABLE(pix), no_alt_info,
1058                       i + MARGIN, 0, i + MARGIN, widgets->profile_height );
1059     else
1060       gdk_draw_line ( GDK_DRAWABLE(pix), window->style->dark_gc[3],
1061                       i + MARGIN, widgets->profile_height, i + MARGIN, widgets->profile_height-widgets->profile_height*(widgets->altitudes[i]-mina)/(chunksa[widgets->cia]*LINES) );
1062
1063   // Ensure somekind of max speed when not set
1064   if ( widgets->max_speed < 0.01 )
1065     widgets->max_speed = vik_track_get_max_speed(tr);
1066
1067   draw_dem_alt_speed_dist(tr,
1068                           GDK_DRAWABLE(pix),
1069                           dem_alt_gc,
1070                           gps_speed_gc,
1071                           mina,
1072                           maxa - mina,
1073                           widgets->max_speed,
1074                           widgets->cia,
1075                           widgets->profile_width,
1076                           widgets->profile_height,
1077                           MARGIN,
1078                           gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON(widgets->w_show_dem)),
1079                           gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON(widgets->w_show_alt_gps_speed)));
1080
1081   /* draw border */
1082   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->black_gc, FALSE, MARGIN, 0, widgets->profile_width-1, widgets->profile_height-1);
1083
1084   g_object_unref ( G_OBJECT(pix) );
1085   g_object_unref ( G_OBJECT(no_alt_info) );
1086   g_object_unref ( G_OBJECT(dem_alt_gc) );
1087   g_object_unref ( G_OBJECT(gps_speed_gc) );
1088
1089 }
1090
1091 /**
1092  * Draw just the speed (velocity)/time image
1093  */
1094 static void draw_vt ( GtkWidget *image, VikTrack *tr, PropWidgets *widgets)
1095 {
1096   GtkWidget *window;
1097   GdkPixmap *pix;
1098   gdouble mins, maxs;
1099   guint i;
1100
1101   // Free previous allocation
1102   if ( widgets->speeds )
1103     g_free ( widgets->speeds );
1104
1105   widgets->speeds = vik_track_make_speed_map ( tr, widgets->profile_width );
1106   if ( widgets->speeds == NULL )
1107     return;
1108
1109   // Convert into appropriate units
1110   vik_units_speed_t speed_units = a_vik_get_units_speed ();
1111   switch (speed_units) {
1112   case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
1113     for ( i = 0; i < widgets->profile_width; i++ ) {
1114       widgets->speeds[i] = VIK_MPS_TO_KPH(widgets->speeds[i]);
1115     }
1116     break;
1117   case VIK_UNITS_SPEED_MILES_PER_HOUR:
1118     for ( i = 0; i < widgets->profile_width; i++ ) {
1119       widgets->speeds[i] = VIK_MPS_TO_MPH(widgets->speeds[i]);
1120     }
1121     break;
1122   case VIK_UNITS_SPEED_KNOTS:
1123     for ( i = 0; i < widgets->profile_width; i++ ) {
1124       widgets->speeds[i] = VIK_MPS_TO_KNOTS(widgets->speeds[i]);
1125     }
1126     break;
1127   default:
1128     // VIK_UNITS_SPEED_METRES_PER_SECOND:
1129     // No need to convert as already in m/s
1130     break;
1131   }
1132
1133   GdkGC *gps_speed_gc;
1134   GdkColor color;
1135
1136   window = gtk_widget_get_toplevel (widgets->speed_box);
1137
1138   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1139
1140   gtk_image_set_from_pixmap ( GTK_IMAGE(image), pix, NULL );
1141
1142   gps_speed_gc = gdk_gc_new ( window->window );
1143   gdk_color_parse ( "red", &color );
1144   gdk_gc_set_rgb_fg_color ( gps_speed_gc, &color);
1145
1146   minmax_array(widgets->speeds, &widgets->min_speed, &widgets->max_speed, FALSE, widgets->profile_width);
1147   if (widgets->min_speed < 0.0)
1148     widgets->min_speed = 0; /* splines sometimes give negative speeds */
1149
1150   /* Find suitable chunk index */
1151   get_new_min_and_chunk_index (widgets->min_speed, widgets->max_speed, chunkss, sizeof(chunkss)/sizeof(chunkss[0]), &widgets->draw_min_speed, &widgets->cis);
1152
1153   // Assign locally
1154   mins = widgets->draw_min_speed;
1155   maxs = widgets->max_speed;
1156
1157   /* clear the image */
1158   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->bg_gc[0],
1159                      TRUE, 0, 0, MARGIN, widgets->profile_height);
1160   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->mid_gc[0],
1161                      TRUE, MARGIN, 0, widgets->profile_width, widgets->profile_height);
1162
1163   /* draw grid */
1164   for (i=0; i<=LINES; i++) {
1165     PangoFontDescription *pfd;
1166     PangoLayout *pl = gtk_widget_create_pango_layout (GTK_WIDGET(image), NULL);
1167     gchar s[32];
1168     int w, h;
1169
1170     pango_layout_set_alignment (pl, PANGO_ALIGN_RIGHT);
1171     pfd = pango_font_description_from_string (PROPWIN_LABEL_FONT);
1172     pango_layout_set_font_description (pl, pfd);
1173     pango_font_description_free (pfd);
1174     // NB: No need to convert here anymore as numbers are in the appropriate units
1175     switch (speed_units) {
1176     case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
1177       sprintf(s, "%8dkm/h", (int)(mins + (LINES-i)*chunkss[widgets->cis]));
1178       break;
1179     case VIK_UNITS_SPEED_MILES_PER_HOUR:
1180       sprintf(s, "%8dmph", (int)(mins + (LINES-i)*chunkss[widgets->cis]));
1181       break;
1182     case VIK_UNITS_SPEED_METRES_PER_SECOND:
1183       sprintf(s, "%8dm/s", (int)(mins + (LINES-i)*chunkss[widgets->cis]));
1184       break;
1185     case VIK_UNITS_SPEED_KNOTS:
1186       sprintf(s, "%8dknots", (int)(mins + (LINES-i)*chunkss[widgets->cis]));
1187       break;
1188     default:
1189       sprintf(s, "--");
1190       g_critical("Houston, we've had a problem. speed=%d", speed_units);
1191     }
1192
1193     pango_layout_set_text(pl, s, -1);
1194     pango_layout_get_pixel_size (pl, &w, &h);
1195     gdk_draw_layout(GDK_DRAWABLE(pix), window->style->fg_gc[0], MARGIN-w-3,
1196                     CLAMP((int)i*widgets->profile_height/LINES - h/2, 0, widgets->profile_height-h), pl);
1197
1198     gdk_draw_line (GDK_DRAWABLE(pix), window->style->dark_gc[0],
1199                    MARGIN, widgets->profile_height/LINES * i, MARGIN + widgets->profile_width, widgets->profile_height/LINES * i);
1200     g_object_unref ( G_OBJECT ( pl ) );
1201     pl = NULL;
1202   }
1203
1204
1205   /* draw speeds */
1206   for ( i = 0; i < widgets->profile_width; i++ )
1207       gdk_draw_line ( GDK_DRAWABLE(pix), window->style->dark_gc[3],
1208                       i + MARGIN, widgets->profile_height, i + MARGIN, widgets->profile_height-widgets->profile_height*(widgets->speeds[i]-mins)/(chunkss[widgets->cis]*LINES) );
1209
1210
1211   time_t beg_time = VIK_TRACKPOINT(tr->trackpoints->data)->timestamp;
1212   time_t dur =  VIK_TRACKPOINT(g_list_last(tr->trackpoints)->data)->timestamp - beg_time;
1213
1214   if ( gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widgets->w_show_gps_speed)) ) {
1215     GList *iter;
1216     for (iter = tr->trackpoints; iter; iter = iter->next) {
1217       gdouble gps_speed = VIK_TRACKPOINT(iter->data)->speed;
1218       if (isnan(gps_speed))
1219         continue;
1220       switch (speed_units) {
1221       case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
1222         gps_speed = VIK_MPS_TO_KPH(gps_speed);
1223         break;
1224       case VIK_UNITS_SPEED_MILES_PER_HOUR:
1225         gps_speed = VIK_MPS_TO_MPH(gps_speed);
1226         break;
1227       case VIK_UNITS_SPEED_KNOTS:
1228         gps_speed = VIK_MPS_TO_KNOTS(gps_speed);
1229         break;
1230       default:
1231         // VIK_UNITS_SPEED_METRES_PER_SECOND:
1232         // No need to convert as already in m/s
1233         break;
1234       }
1235       int x = MARGIN + widgets->profile_width * (VIK_TRACKPOINT(iter->data)->timestamp - beg_time) / dur;
1236       int y = widgets->profile_height - widgets->profile_height*(gps_speed - mins)/(chunkss[widgets->cis]*LINES);
1237       gdk_draw_rectangle(GDK_DRAWABLE(pix), gps_speed_gc, TRUE, x-2, y-2, 4, 4);
1238     }
1239   }
1240
1241   /* draw border */
1242   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->black_gc, FALSE, MARGIN, 0, widgets->profile_width-1, widgets->profile_height-1);
1243
1244   g_object_unref ( G_OBJECT(pix) );
1245   g_object_unref ( G_OBJECT(gps_speed_gc) );
1246
1247 }
1248
1249 /**
1250  * Draw just the distance/time image
1251  */
1252 static void draw_dt ( GtkWidget *image, VikTrack *tr, PropWidgets *widgets )
1253 {
1254   GtkWidget *window;
1255   GdkPixmap *pix;
1256   gdouble maxd;
1257   guint i;
1258
1259   // Free previous allocation
1260   if ( widgets->distances )
1261     g_free ( widgets->distances );
1262
1263   widgets->distances = vik_track_make_distance_map ( tr, widgets->profile_width );
1264   if ( widgets->distances == NULL )
1265     return;
1266
1267   // Convert into appropriate units
1268   vik_units_distance_t dist_units = a_vik_get_units_distance ();
1269   if ( dist_units == VIK_UNITS_DISTANCE_MILES ) {
1270     for ( i = 0; i < widgets->profile_width; i++ ) {
1271       widgets->distances[i] = VIK_METERS_TO_MILES(widgets->distances[i]);
1272     }
1273   }
1274   else {
1275     // Metres - but want in kms
1276     for ( i = 0; i < widgets->profile_width; i++ ) {
1277       widgets->distances[i] = widgets->distances[i]/1000.0;
1278     }
1279   }
1280
1281   window = gtk_widget_get_toplevel (widgets->dist_box);
1282
1283   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1284
1285   gtk_image_set_from_pixmap ( GTK_IMAGE(image), pix, NULL );
1286
1287   // easy to work out min / max of distance!
1288   // Assign locally
1289   // mind = 0.0; - Thus not used
1290   if ( dist_units == VIK_UNITS_DISTANCE_MILES )
1291     maxd = VIK_METERS_TO_MILES(vik_track_get_length_including_gaps (tr));
1292   else
1293     maxd = vik_track_get_length_including_gaps (tr) / 1000.0;
1294
1295   /* Find suitable chunk index */
1296   gdouble dummy = 0.0; // expect this to remain the same! (not that it's used)
1297   get_new_min_and_chunk_index (0, maxd, chunksd, sizeof(chunksd)/sizeof(chunksd[0]), &dummy, &widgets->cid);
1298
1299   /* clear the image */
1300   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->bg_gc[0],
1301                      TRUE, 0, 0, MARGIN, widgets->profile_height);
1302   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->mid_gc[0],
1303                      TRUE, MARGIN, 0, widgets->profile_width, widgets->profile_height);
1304
1305   /* draw grid */
1306   for (i=0; i<=LINES; i++) {
1307     PangoFontDescription *pfd;
1308     PangoLayout *pl = gtk_widget_create_pango_layout (GTK_WIDGET(image), NULL);
1309     gchar s[32];
1310     int w, h;
1311
1312     pango_layout_set_alignment (pl, PANGO_ALIGN_RIGHT);
1313     pfd = pango_font_description_from_string (PROPWIN_LABEL_FONT);
1314     pango_layout_set_font_description (pl, pfd);
1315     pango_font_description_free (pfd);
1316     if ( dist_units == VIK_UNITS_DISTANCE_MILES )
1317       sprintf(s, _("%.1f miles"), ((LINES-i)*chunksd[widgets->cid]));
1318     else
1319       sprintf(s, _("%.1f km"), ((LINES-i)*chunksd[widgets->cid]));
1320
1321     pango_layout_set_text(pl, s, -1);
1322     pango_layout_get_pixel_size (pl, &w, &h);
1323     gdk_draw_layout(GDK_DRAWABLE(pix), window->style->fg_gc[0], MARGIN-w-3,
1324                     CLAMP((int)i*widgets->profile_height/LINES - h/2, 0, widgets->profile_height-h), pl);
1325
1326     gdk_draw_line (GDK_DRAWABLE(pix), window->style->dark_gc[0],
1327                    MARGIN, widgets->profile_height/LINES * i, MARGIN + widgets->profile_width, widgets->profile_height/LINES * i);
1328     g_object_unref ( G_OBJECT ( pl ) );
1329     pl = NULL;
1330   }
1331
1332   /* draw distance */
1333   for ( i = 0; i < widgets->profile_width; i++ )
1334       gdk_draw_line ( GDK_DRAWABLE(pix), window->style->dark_gc[3],
1335                       i + MARGIN, widgets->profile_height, i + MARGIN, widgets->profile_height-widgets->profile_height*(widgets->distances[i])/(chunksd[widgets->cid]*LINES) );
1336
1337   // Show speed indicator
1338   if ( gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widgets->w_show_dist_speed)) ) {
1339     GdkGC *dist_speed_gc = gdk_gc_new ( window->window );
1340     GdkColor color;
1341     gdk_color_parse ( "red", &color );
1342     gdk_gc_set_rgb_fg_color ( dist_speed_gc, &color);
1343
1344     gdouble max_speed = 0;
1345     max_speed = widgets->max_speed * 110 / 100;
1346
1347     // This is just an indicator - no actual values can be inferred by user
1348     gint i;
1349     for ( i = 0; i < widgets->profile_width; i++ ) {
1350       int y_speed = widgets->profile_height - (widgets->profile_height * widgets->speeds[i])/max_speed;
1351       gdk_draw_rectangle(GDK_DRAWABLE(pix), dist_speed_gc, TRUE, i+MARGIN-2, y_speed-2, 4, 4);
1352     }
1353     g_object_unref ( G_OBJECT(dist_speed_gc) );
1354   }
1355
1356   /* draw border */
1357   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->black_gc, FALSE, MARGIN, 0, widgets->profile_width-1, widgets->profile_height-1);
1358
1359   g_object_unref ( G_OBJECT(pix) );
1360
1361 }
1362
1363 /**
1364  * Draw just the elevation/time image
1365  */
1366 static void draw_et ( GtkWidget *image, VikTrack *tr, PropWidgets *widgets )
1367 {
1368   GtkWidget *window;
1369   GdkPixmap *pix;
1370   gdouble mina,maxa;
1371   guint i;
1372
1373   // Free previous allocation
1374   if ( widgets->ats )
1375     g_free ( widgets->ats );
1376
1377   widgets->ats = vik_track_make_elevation_time_map ( tr, widgets->profile_width );
1378
1379   if ( widgets->ats == NULL )
1380     return;
1381
1382   // Convert into appropriate units
1383   vik_units_height_t height_units = a_vik_get_units_height ();
1384   if ( height_units == VIK_UNITS_HEIGHT_FEET ) {
1385     // Convert altitudes into feet units
1386     for ( i = 0; i < widgets->profile_width; i++ ) {
1387       widgets->ats[i] = VIK_METERS_TO_FEET(widgets->ats[i]);
1388     }
1389   }
1390   // Otherwise leave in metres
1391
1392   minmax_array(widgets->ats, &widgets->min_altitude, &widgets->max_altitude, TRUE, widgets->profile_width);
1393
1394   get_new_min_and_chunk_index_altitude (widgets->min_altitude, widgets->max_altitude, &widgets->draw_min_altitude, &widgets->cia);
1395
1396   // Assign locally
1397   mina = widgets->draw_min_altitude;
1398   maxa = widgets->max_altitude;
1399
1400   window = gtk_widget_get_toplevel (widgets->elev_time_box);
1401
1402   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1403
1404   gtk_image_set_from_pixmap ( GTK_IMAGE(image), pix, NULL );
1405
1406   /* clear the image */
1407   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->bg_gc[0],
1408                      TRUE, 0, 0, MARGIN, widgets->profile_height);
1409   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->mid_gc[0],
1410                      TRUE, MARGIN, 0, widgets->profile_width, widgets->profile_height);
1411
1412   /* draw grid */
1413   for (i=0; i<=LINES; i++) {
1414     PangoFontDescription *pfd;
1415     PangoLayout *pl = gtk_widget_create_pango_layout (GTK_WIDGET(image), NULL);
1416     gchar s[32];
1417     int w, h;
1418
1419     pango_layout_set_alignment (pl, PANGO_ALIGN_RIGHT);
1420     pfd = pango_font_description_from_string (PROPWIN_LABEL_FONT);
1421     pango_layout_set_font_description (pl, pfd);
1422     pango_font_description_free (pfd);
1423     switch (height_units) {
1424     case VIK_UNITS_HEIGHT_METRES:
1425       sprintf(s, "%8dm", (int)(mina + (LINES-i)*chunksa[widgets->cia]));
1426       break;
1427     case VIK_UNITS_HEIGHT_FEET:
1428       // NB values already converted into feet
1429       sprintf(s, "%8dft", (int)(mina + (LINES-i)*chunksa[widgets->cia]));
1430       break;
1431     default:
1432       sprintf(s, "--");
1433       g_critical("Houston, we've had a problem. height=%d", height_units);
1434     }
1435     pango_layout_set_text(pl, s, -1);
1436     pango_layout_get_pixel_size (pl, &w, &h);
1437     gdk_draw_layout(GDK_DRAWABLE(pix), window->style->fg_gc[0], MARGIN-w-3,
1438                     CLAMP((int)i*widgets->profile_height/LINES - h/2, 0, widgets->profile_height-h), pl);
1439
1440     gdk_draw_line (GDK_DRAWABLE(pix), window->style->dark_gc[0],
1441                    MARGIN, widgets->profile_height/LINES * i, MARGIN + widgets->profile_width, widgets->profile_height/LINES * i);
1442     g_object_unref ( G_OBJECT ( pl ) );
1443     pl = NULL;
1444   }
1445
1446   /* draw elevations */
1447   for ( i = 0; i < widgets->profile_width; i++ )
1448       gdk_draw_line ( GDK_DRAWABLE(pix), window->style->dark_gc[3],
1449                       i + MARGIN, widgets->profile_height, i + MARGIN, widgets->profile_height-widgets->profile_height*(widgets->ats[i]-mina)/(chunksa[widgets->cia]*LINES) );
1450
1451   // Show speed indicator
1452   if ( gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widgets->w_show_elev_speed)) ) {
1453     GdkGC *elev_speed_gc = gdk_gc_new ( window->window );
1454     GdkColor color;
1455     gdk_color_parse ( "red", &color );
1456     gdk_gc_set_rgb_fg_color ( elev_speed_gc, &color);
1457
1458     gdouble max_speed = 0;
1459     max_speed = widgets->max_speed * 110 / 100;
1460
1461     // This is just an indicator - no actual values can be inferred by user
1462     gint i;
1463     for ( i = 0; i < widgets->profile_width; i++ ) {
1464       int y_speed = widgets->profile_height - (widgets->profile_height * widgets->speeds[i])/max_speed;
1465       gdk_draw_rectangle(GDK_DRAWABLE(pix), elev_speed_gc, TRUE, i+MARGIN-2, y_speed-2, 4, 4);
1466     }
1467     g_object_unref ( G_OBJECT(elev_speed_gc) );
1468   }
1469
1470   /* draw border */
1471   gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->black_gc, FALSE, MARGIN, 0, widgets->profile_width-1, widgets->profile_height-1);
1472
1473   g_object_unref ( G_OBJECT(pix) );
1474
1475 }
1476 #undef LINES
1477
1478 /**
1479  * Draw all graphs
1480  */
1481 static void draw_all_graphs ( GtkWidget *widget, gpointer *pass_along, gboolean resized )
1482 {
1483   VikTrack *tr = pass_along[0];
1484   PropWidgets *widgets = pass_along[3];
1485
1486   // Draw graphs even if they are not visible
1487
1488   GList *child = NULL;
1489   GtkWidget *image = NULL;
1490   GtkWidget *window = gtk_widget_get_toplevel(widget);
1491   gdouble pc = NAN;
1492   gdouble pc_blob = NAN;
1493
1494   // Draw elevations
1495   if (widgets->elev_box != NULL) {
1496
1497     // Saved image no longer any good as we've resized, so we remove it here
1498     if (resized && widgets->elev_graph_saved_img.img) {
1499       g_object_unref(widgets->elev_graph_saved_img.img);
1500       widgets->elev_graph_saved_img.img = NULL;
1501       widgets->elev_graph_saved_img.saved = FALSE;
1502     }
1503
1504     child = gtk_container_get_children(GTK_CONTAINER(widgets->elev_box));
1505     draw_elevations (GTK_WIDGET(child->data), tr, widgets );
1506
1507     image = GTK_WIDGET(child->data);
1508     g_list_free(child);
1509
1510     // Ensure marker or blob are redrawn if necessary
1511     if (widgets->is_marker_drawn || widgets->is_blob_drawn) {
1512
1513       pc = tp_percentage_by_distance ( tr, widgets->marker_tp, widgets->track_length );
1514       gdouble x_blob = -MARGIN - 1.0; // i.e. Don't draw unless we get a valid value
1515       gint y_blob = 0;
1516       if (widgets->is_blob_drawn) {
1517         pc_blob = tp_percentage_by_distance ( tr, widgets->blob_tp, widgets->track_length );
1518         if (!isnan(pc_blob)) {
1519           x_blob = (pc_blob * widgets->profile_width);
1520         }
1521         y_blob = blobby_altitude (x_blob, widgets);
1522       }
1523
1524       gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
1525       if (!isnan(pc)) {
1526         marker_x = (pc * widgets->profile_width) + MARGIN;
1527       }
1528
1529       save_image_and_draw_graph_marks (image,
1530                                        marker_x,
1531                                        window->style->black_gc,
1532                                        x_blob+MARGIN,
1533                                        y_blob,
1534                                        &widgets->elev_graph_saved_img,
1535                                        widgets->profile_width,
1536                                        widgets->profile_height,
1537                                        &widgets->is_marker_drawn,
1538                                        &widgets->is_blob_drawn);
1539     }
1540   }
1541
1542   // Draw speeds
1543   if (widgets->speed_box != NULL) {
1544
1545     // Saved image no longer any good as we've resized
1546     if (resized && widgets->speed_graph_saved_img.img) {
1547       g_object_unref(widgets->speed_graph_saved_img.img);
1548       widgets->speed_graph_saved_img.img = NULL;
1549       widgets->speed_graph_saved_img.saved = FALSE;
1550     }
1551
1552     child = gtk_container_get_children(GTK_CONTAINER(widgets->speed_box));
1553     draw_vt (GTK_WIDGET(child->data), tr, widgets );
1554
1555     image = GTK_WIDGET(child->data);
1556     g_list_free(child);
1557
1558     // Ensure marker or blob are redrawn if necessary
1559     if (widgets->is_marker_drawn || widgets->is_blob_drawn) {
1560
1561       pc = tp_percentage_by_time ( tr, widgets->marker_tp );
1562
1563       gdouble x_blob = -MARGIN - 1.0; // i.e. Don't draw unless we get a valid value
1564       gint    y_blob = 0;
1565       if (widgets->is_blob_drawn) {
1566         pc_blob = tp_percentage_by_time ( tr, widgets->blob_tp );
1567         if (!isnan(pc_blob)) {
1568           x_blob = (pc_blob * widgets->profile_width);
1569         }
1570
1571         y_blob = blobby_speed (x_blob, widgets);
1572       }
1573
1574       gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
1575       if (!isnan(pc)) {
1576         marker_x = (pc * widgets->profile_width) + MARGIN;
1577       }
1578
1579       save_image_and_draw_graph_marks (image,
1580                                        marker_x,
1581                                        window->style->black_gc,
1582                                        x_blob+MARGIN,
1583                                        y_blob,
1584                                        &widgets->speed_graph_saved_img,
1585                                        widgets->profile_width,
1586                                        widgets->profile_height,
1587                                        &widgets->is_marker_drawn,
1588                                        &widgets->is_blob_drawn);
1589     }
1590   }
1591
1592   // Draw Distances
1593   if (widgets->dist_box != NULL) {
1594
1595     // Saved image no longer any good as we've resized
1596     if (resized && widgets->dist_graph_saved_img.img) {
1597       g_object_unref(widgets->dist_graph_saved_img.img);
1598       widgets->dist_graph_saved_img.img = NULL;
1599       widgets->dist_graph_saved_img.saved = FALSE;
1600     }
1601
1602     child = gtk_container_get_children(GTK_CONTAINER(widgets->dist_box));
1603     draw_dt (GTK_WIDGET(child->data), tr, widgets );
1604
1605     image = GTK_WIDGET(child->data);
1606     g_list_free(child);
1607
1608     // Ensure marker or blob are redrawn if necessary
1609     if (widgets->is_marker_drawn || widgets->is_blob_drawn) {
1610
1611       pc = tp_percentage_by_time ( tr, widgets->marker_tp );
1612
1613       gdouble x_blob = -MARGIN - 1.0; // i.e. Don't draw unless we get a valid value
1614       gint    y_blob = 0;
1615       if (widgets->is_blob_drawn) {
1616         pc_blob = tp_percentage_by_time ( tr, widgets->blob_tp );
1617         if (!isnan(pc_blob)) {
1618           x_blob = (pc_blob * widgets->profile_width);
1619         }
1620
1621         y_blob = blobby_distance (x_blob, widgets);
1622       }
1623
1624       gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
1625       if (!isnan(pc)) {
1626         marker_x = (pc * widgets->profile_width) + MARGIN;
1627       }
1628
1629       save_image_and_draw_graph_marks (image,
1630                                        marker_x,
1631                                        window->style->black_gc,
1632                                        x_blob+MARGIN,
1633                                        y_blob,
1634                                        &widgets->dist_graph_saved_img,
1635                                        widgets->profile_width,
1636                                        widgets->profile_height,
1637                                        &widgets->is_marker_drawn,
1638                                        &widgets->is_blob_drawn);
1639     }
1640   }
1641
1642   // Draw Elevations in timely manner
1643   if (widgets->elev_time_box != NULL) {
1644
1645     // Saved image no longer any good as we've resized
1646     if (resized && widgets->elev_time_graph_saved_img.img) {
1647       g_object_unref(widgets->elev_time_graph_saved_img.img);
1648       widgets->elev_time_graph_saved_img.img = NULL;
1649       widgets->elev_time_graph_saved_img.saved = FALSE;
1650     }
1651
1652     child = gtk_container_get_children(GTK_CONTAINER(widgets->elev_time_box));
1653     draw_et (GTK_WIDGET(child->data), tr, widgets );
1654
1655     image = GTK_WIDGET(child->data);
1656     g_list_free(child);
1657
1658     // Ensure marker or blob are redrawn if necessary
1659     if (widgets->is_marker_drawn || widgets->is_blob_drawn) {
1660
1661       pc = tp_percentage_by_time ( tr, widgets->marker_tp );
1662
1663       gdouble x_blob = -MARGIN - 1.0; // i.e. Don't draw unless we get a valid value
1664       gint    y_blob = 0;
1665       if (widgets->is_blob_drawn) {
1666         pc_blob = tp_percentage_by_time ( tr, widgets->blob_tp );
1667         if (!isnan(pc_blob)) {
1668           x_blob = (pc_blob * widgets->profile_width);
1669         }
1670         y_blob = blobby_altitude_time (x_blob, widgets);
1671       }
1672
1673       gdouble marker_x = -1.0; // i.e. Don't draw unless we get a valid value
1674       if (!isnan(pc)) {
1675         marker_x = (pc * widgets->profile_width) + MARGIN;
1676       }
1677
1678       save_image_and_draw_graph_marks (image,
1679                                        marker_x,
1680                                        window->style->black_gc,
1681                                        x_blob+MARGIN,
1682                                        y_blob,
1683                                        &widgets->elev_time_graph_saved_img,
1684                                        widgets->profile_width,
1685                                        widgets->profile_height,
1686                                        &widgets->is_marker_drawn,
1687                                        &widgets->is_blob_drawn);
1688     }
1689   }
1690
1691 }
1692
1693 /**
1694  * Configure/Resize the profile & speed/time images
1695  */
1696 static gboolean configure_event ( GtkWidget *widget, GdkEventConfigure *event, gpointer *pass_along )
1697 {
1698   PropWidgets *widgets = pass_along[3];
1699
1700   if (widgets->configure_dialog) {
1701     // Determine size offsets between dialog size and size for images
1702     // Only on the initialisation of the dialog
1703     widgets->profile_width_offset = event->width - widgets->profile_width;
1704     widgets->profile_height_offset = event->height - widgets->profile_height;
1705     widgets->configure_dialog = FALSE;
1706
1707     // Without this the settting, the dialog will only grow in vertical size - one can not then make it smaller!
1708     gtk_widget_set_size_request ( widget, widgets->profile_width+widgets->profile_width_offset, widgets->profile_height );
1709     // In fact this allows one to compress it a bit more vertically as I don't add on the height offset
1710   }
1711   else {
1712     widgets->profile_width_old = widgets->profile_width;
1713     widgets->profile_height_old = widgets->profile_height;
1714   }
1715
1716   // Now adjust From Dialog size to get image size
1717   widgets->profile_width = event->width - widgets->profile_width_offset;
1718   widgets->profile_height = event->height - widgets->profile_height_offset;
1719
1720   // ATM we receive configure_events when the dialog is moved and so no further action is necessary
1721   if ( !widgets->configure_dialog &&
1722        (widgets->profile_width_old == widgets->profile_width) && (widgets->profile_height_old == widgets->profile_height) )
1723     return FALSE;
1724
1725   // Draw stuff
1726   draw_all_graphs ( widget, pass_along, TRUE );
1727
1728   return FALSE;
1729 }
1730
1731 /**
1732  * Create height profile widgets including the image and callbacks
1733  */
1734 GtkWidget *vik_trw_layer_create_profile ( GtkWidget *window, VikTrack *tr, gpointer vlp, VikViewport *vvp, PropWidgets *widgets, gdouble *min_alt, gdouble *max_alt)
1735 {
1736   GdkPixmap *pix;
1737   GtkWidget *image;
1738   GtkWidget *eventbox;
1739   gpointer *pass_along;
1740
1741   // First allocation
1742   widgets->altitudes = vik_track_make_elevation_map ( tr, widgets->profile_width );
1743
1744   if ( widgets->altitudes == NULL ) {
1745     *min_alt = *max_alt = VIK_DEFAULT_ALTITUDE;
1746     return NULL;
1747   }
1748
1749   minmax_array(widgets->altitudes, min_alt, max_alt, TRUE, widgets->profile_width);
1750
1751   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1752   image = gtk_image_new_from_pixmap ( pix, NULL );
1753
1754   g_object_unref ( G_OBJECT(pix) );
1755
1756   pass_along = g_malloc ( sizeof(gpointer) * 4 ); /* FIXME: mem leak -- never be freed */
1757   pass_along[0] = tr;
1758   pass_along[1] = vlp;
1759   pass_along[2] = vvp;
1760   pass_along[3] = widgets;
1761
1762   eventbox = gtk_event_box_new ();
1763   g_signal_connect ( G_OBJECT(eventbox), "button_press_event", G_CALLBACK(track_profile_click), pass_along );
1764   g_signal_connect ( G_OBJECT(eventbox), "motion_notify_event", G_CALLBACK(track_profile_move), pass_along );
1765   g_signal_connect_swapped ( G_OBJECT(eventbox), "destroy", G_CALLBACK(g_free), pass_along );
1766   gtk_container_add ( GTK_CONTAINER(eventbox), image );
1767   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_STRUCTURE_MASK);
1768
1769   return eventbox;
1770 }
1771
1772 /**
1773  * Create speed/time widgets including the image and callbacks
1774  */
1775 GtkWidget *vik_trw_layer_create_vtdiag ( GtkWidget *window, VikTrack *tr, gpointer vlp, VikViewport *vvp, PropWidgets *widgets)
1776 {
1777   GdkPixmap *pix;
1778   GtkWidget *image;
1779   GtkWidget *eventbox;
1780   gpointer *pass_along;
1781
1782   // First allocation
1783   widgets->speeds = vik_track_make_speed_map ( tr, widgets->profile_width );
1784   if ( widgets->speeds == NULL )
1785     return NULL;
1786
1787   pass_along = g_malloc ( sizeof(gpointer) * 4 ); /* FIXME: mem leak -- never be freed */
1788   pass_along[0] = tr;
1789   pass_along[1] = vlp;
1790   pass_along[2] = vvp;
1791   pass_along[3] = widgets;
1792
1793   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1794   image = gtk_image_new_from_pixmap ( pix, NULL );
1795
1796 #if 0
1797   /* XXX this can go out, it's just a helpful dev tool */
1798   {
1799     int j;
1800     GdkGC **colors[8] = { window->style->bg_gc,
1801                           window->style->fg_gc,
1802                           window->style->light_gc,
1803                           window->style->dark_gc,
1804                           window->style->mid_gc,
1805                           window->style->text_gc,
1806                           window->style->base_gc,
1807                           window->style->text_aa_gc };
1808     for (i=0; i<5; i++) {
1809       for (j=0; j<8; j++) {
1810         gdk_draw_rectangle(GDK_DRAWABLE(pix), colors[j][i],
1811                            TRUE, i*20, j*20, 20, 20);
1812         gdk_draw_rectangle(GDK_DRAWABLE(pix), window->style->black_gc,
1813                            FALSE, i*20, j*20, 20, 20);
1814       }
1815     }
1816   }
1817 #endif
1818
1819   g_object_unref ( G_OBJECT(pix) );
1820
1821   eventbox = gtk_event_box_new ();
1822   g_signal_connect ( G_OBJECT(eventbox), "button_press_event", G_CALLBACK(track_vt_click), pass_along );
1823   g_signal_connect ( G_OBJECT(eventbox), "motion_notify_event", G_CALLBACK(track_vt_move), pass_along );
1824   g_signal_connect_swapped ( G_OBJECT(eventbox), "destroy", G_CALLBACK(g_free), pass_along );
1825   gtk_container_add ( GTK_CONTAINER(eventbox), image );
1826   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
1827
1828   return eventbox;
1829 }
1830
1831 /**
1832  * Create distance / time widgets including the image and callbacks
1833  */
1834 GtkWidget *vik_trw_layer_create_dtdiag ( GtkWidget *window, VikTrack *tr, gpointer vlp, VikViewport *vvp, PropWidgets *widgets)
1835 {
1836   GdkPixmap *pix;
1837   GtkWidget *image;
1838   GtkWidget *eventbox;
1839   gpointer *pass_along;
1840
1841   // First allocation
1842   widgets->distances = vik_track_make_distance_map ( tr, widgets->profile_width );
1843   if ( widgets->distances == NULL )
1844     return NULL;
1845
1846   pass_along = g_malloc ( sizeof(gpointer) * 4 ); /* FIXME: mem leak -- never be freed */
1847   pass_along[0] = tr;
1848   pass_along[1] = vlp;
1849   pass_along[2] = vvp;
1850   pass_along[3] = widgets;
1851
1852   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1853   image = gtk_image_new_from_pixmap ( pix, NULL );
1854
1855   g_object_unref ( G_OBJECT(pix) );
1856
1857   eventbox = gtk_event_box_new ();
1858   g_signal_connect ( G_OBJECT(eventbox), "button_press_event", G_CALLBACK(track_dt_click), pass_along );
1859   g_signal_connect ( G_OBJECT(eventbox), "motion_notify_event", G_CALLBACK(track_dt_move), pass_along );
1860   g_signal_connect_swapped ( G_OBJECT(eventbox), "destroy", G_CALLBACK(g_free), pass_along );
1861   gtk_container_add ( GTK_CONTAINER(eventbox), image );
1862   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
1863
1864   return eventbox;
1865 }
1866
1867 /**
1868  * Create elevation / time widgets including the image and callbacks
1869  */
1870 GtkWidget *vik_trw_layer_create_etdiag ( GtkWidget *window, VikTrack *tr, gpointer vlp, VikViewport *vvp, PropWidgets *widgets)
1871 {
1872   GdkPixmap *pix;
1873   GtkWidget *image;
1874   GtkWidget *eventbox;
1875   gpointer *pass_along;
1876
1877   // First allocation
1878   widgets->ats = vik_track_make_elevation_time_map ( tr, widgets->profile_width );
1879   if ( widgets->ats == NULL )
1880     return NULL;
1881
1882   pass_along = g_malloc ( sizeof(gpointer) * 4 ); /* FIXME: mem leak -- never be freed */
1883   pass_along[0] = tr;
1884   pass_along[1] = vlp;
1885   pass_along[2] = vvp;
1886   pass_along[3] = widgets;
1887
1888   pix = gdk_pixmap_new( window->window, widgets->profile_width + MARGIN, widgets->profile_height, -1 );
1889   image = gtk_image_new_from_pixmap ( pix, NULL );
1890
1891   g_object_unref ( G_OBJECT(pix) );
1892
1893   eventbox = gtk_event_box_new ();
1894   g_signal_connect ( G_OBJECT(eventbox), "button_press_event", G_CALLBACK(track_et_click), pass_along );
1895   g_signal_connect ( G_OBJECT(eventbox), "motion_notify_event", G_CALLBACK(track_et_move), pass_along );
1896   g_signal_connect_swapped ( G_OBJECT(eventbox), "destroy", G_CALLBACK(g_free), pass_along );
1897   gtk_container_add ( GTK_CONTAINER(eventbox), image );
1898   gtk_widget_set_events (eventbox, GDK_BUTTON_PRESS_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
1899
1900   return eventbox;
1901 }
1902 #undef MARGIN
1903
1904 static void propwin_response_cb( GtkDialog *dialog, gint resp, PropWidgets *widgets)
1905 {
1906   VikTrack *tr = widgets->tr;
1907   VikTrwLayer *vtl = widgets->vtl;
1908   gboolean keep_dialog = FALSE;
1909
1910   /* FIXME: check and make sure the track still exists before doing anything to it */
1911   /* Note: destroying diaglog (eg, parent window exit) won't give "response" */
1912   switch (resp) {
1913     case GTK_RESPONSE_DELETE_EVENT: /* received delete event (not from buttons) */
1914     case GTK_RESPONSE_REJECT:
1915       break;
1916     case GTK_RESPONSE_ACCEPT:
1917       vik_track_set_comment(tr, gtk_entry_get_text(GTK_ENTRY(widgets->w_comment)));
1918       break;
1919     case VIK_TRW_LAYER_PROPWIN_REVERSE:
1920       vik_track_reverse(tr);
1921       vik_layer_emit_update ( VIK_LAYER(vtl) );
1922       break;
1923     case VIK_TRW_LAYER_PROPWIN_DEL_DUP:
1924       vik_track_remove_dup_points(tr);
1925       /* above operation could have deleted current_tp or last_tp */
1926       trw_layer_cancel_tps_of_track ( vtl, widgets->track_name );
1927       vik_layer_emit_update ( VIK_LAYER(vtl) );
1928       break;
1929     case VIK_TRW_LAYER_PROPWIN_SPLIT:
1930       {
1931         /* get new tracks, add them, resolve naming conflicts (free if cancel), and delete old. old can still exist on clipboard. */
1932         guint ntracks;
1933         VikTrack **tracks = vik_track_split_into_segments(tr, &ntracks);
1934         gchar *new_tr_name;
1935         guint i;
1936         for ( i = 0; i < ntracks; i++ )
1937         {
1938           g_assert ( tracks[i] );
1939           new_tr_name = g_strdup_printf("%s #%d", widgets->track_name, i+1);
1940           /* if ( (wp_exists) && (! overwrite) ) */
1941           /* don't need to upper case new_tr_name because old tr name was uppercase */
1942           if ( vik_trw_layer_get_track(vtl, new_tr_name ) &&
1943              ( ! a_dialog_yes_or_no ( VIK_GTK_WINDOW_FROM_LAYER(vtl), "The track \"%s\" exists, do you wish to overwrite it?", new_tr_name ) ) )
1944           {
1945             gchar *new_new_tr_name = a_dialog_new_track ( VIK_GTK_WINDOW_FROM_LAYER(vtl), vik_trw_layer_get_tracks(vtl), NULL );
1946             g_free ( new_tr_name );
1947             if (new_new_tr_name)
1948               new_tr_name = new_new_tr_name;
1949             else
1950             {
1951               new_tr_name = NULL;
1952               vik_track_free ( tracks[i] );
1953             }
1954           }
1955           if ( new_tr_name )
1956             vik_trw_layer_add_track ( vtl, new_tr_name, tracks[i] );
1957         }
1958         if ( tracks )
1959         {
1960           g_free ( tracks );
1961           /* Don't let track destroy this dialog */
1962           vik_track_clear_property_dialog(tr);
1963           vik_trw_layer_delete_track ( vtl, widgets->track_name );
1964           vik_layer_emit_update ( VIK_LAYER(vtl) ); /* chase thru the hoops */
1965         }
1966       }
1967       break;
1968     case VIK_TRW_LAYER_PROPWIN_SPLIT_MARKER:
1969       {
1970         GList *iter = tr->trackpoints;
1971         while ((iter = iter->next)) {
1972           if (widgets->marker_tp == VIK_TRACKPOINT(iter->data))
1973             break;
1974         }
1975         if (iter == NULL) {
1976           a_dialog_msg(VIK_GTK_WINDOW_FROM_LAYER(vtl), GTK_MESSAGE_ERROR,
1977                   _("Failed spliting track. Track unchanged"), NULL);
1978           keep_dialog = TRUE;
1979           break;
1980         }
1981
1982         gchar *r_name = g_strdup_printf("%s #R", widgets->track_name);
1983         if (vik_trw_layer_get_track(vtl, r_name ) &&
1984              ( ! a_dialog_yes_or_no( VIK_GTK_WINDOW_FROM_LAYER(vtl),
1985               "The track \"%s\" exists, do you wish to overwrite it?", r_name)))
1986         {
1987           gchar *new_r_name = a_dialog_new_track( VIK_GTK_WINDOW_FROM_LAYER(vtl), vik_trw_layer_get_tracks(vtl), NULL );
1988             if (new_r_name) {
1989               g_free( r_name );
1990               r_name = new_r_name;
1991             }
1992             else {
1993               a_dialog_msg(VIK_GTK_WINDOW_FROM_LAYER(vtl), GTK_MESSAGE_WARNING,
1994                   _("Operation Aborted. Track unchanged"), NULL);
1995               keep_dialog = TRUE;
1996               break;
1997             }
1998         }
1999         iter->prev->next = NULL;
2000         iter->prev = NULL;
2001         VikTrack *tr_right = vik_track_new();
2002         if ( tr->comment )
2003           vik_track_set_comment ( tr_right, tr->comment );
2004         tr_right->visible = tr->visible;
2005         tr_right->trackpoints = iter;
2006
2007         vik_trw_layer_add_track(vtl, r_name, tr_right);
2008         vik_layer_emit_update ( VIK_LAYER(vtl) );
2009       }
2010       break;
2011     default:
2012       fprintf(stderr, "DEBUG: unknown response\n");
2013       return;
2014   }
2015
2016   /* Keep same behaviour for now: destroy dialog if click on any button */
2017   if (!keep_dialog) {
2018     prop_widgets_free(widgets);
2019     vik_track_clear_property_dialog(tr);
2020     gtk_widget_destroy ( GTK_WIDGET(dialog) );
2021   }
2022 }
2023
2024 /**
2025  * Force a redraw when checkbutton has been toggled to show/hide that information
2026  */
2027 static void checkbutton_toggle_cb ( GtkToggleButton *togglebutton, gpointer *pass_along, gpointer dummy)
2028 {
2029   PropWidgets *widgets = pass_along[3];
2030   // Even though not resized, we'll pretend it is -
2031   //  as this invalidates the saved images (since the image may have changed)
2032   draw_all_graphs ( widgets->dialog, pass_along, TRUE);
2033 }
2034
2035 /**
2036  *  Create the widgets for the given graph tab
2037  */
2038 static GtkWidget *create_graph_page ( GtkWidget *graph,
2039                                       const gchar *markup,
2040                                       GtkWidget *value,
2041                                       const gchar *markup2,
2042                                       GtkWidget *value2,
2043                                       GtkWidget *checkbutton1,
2044                                       gboolean checkbutton1_default,
2045                                       GtkWidget *checkbutton2,
2046                                       gboolean checkbutton2_default )
2047 {
2048   GtkWidget *hbox = gtk_hbox_new ( FALSE, 10 );
2049   GtkWidget *vbox = gtk_vbox_new ( FALSE, 10 );
2050   GtkWidget *label = gtk_label_new (NULL);
2051   GtkWidget *label2 = gtk_label_new (NULL);
2052   gtk_box_pack_start (GTK_BOX(vbox), graph, FALSE, FALSE, 0);
2053   gtk_label_set_markup ( GTK_LABEL(label), markup );
2054   gtk_label_set_markup ( GTK_LABEL(label2), markup2 );
2055   gtk_box_pack_start (GTK_BOX(hbox), label, FALSE, FALSE, 0);
2056   gtk_box_pack_start (GTK_BOX(hbox), value, FALSE, FALSE, 0);
2057   gtk_box_pack_start (GTK_BOX(hbox), label2, FALSE, FALSE, 0);
2058   gtk_box_pack_start (GTK_BOX(hbox), value2, FALSE, FALSE, 0);
2059   if (checkbutton2) {
2060     gtk_box_pack_end (GTK_BOX(hbox), checkbutton2, FALSE, FALSE, 0);
2061     gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON(checkbutton2), checkbutton2_default);
2062   }
2063   if (checkbutton1) {
2064     gtk_box_pack_end (GTK_BOX(hbox), checkbutton1, FALSE, FALSE, 0);
2065     gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON(checkbutton1), checkbutton1_default);
2066   }
2067   gtk_box_pack_start (GTK_BOX(vbox), hbox, FALSE, FALSE, 0);
2068
2069   return vbox;
2070 }
2071
2072 void vik_trw_layer_propwin_run ( GtkWindow *parent, VikTrwLayer *vtl, VikTrack *tr, gpointer vlp, gchar *track_name, VikViewport *vvp )
2073 {
2074   /* FIXME: free widgets when destroy signal received */
2075   PropWidgets *widgets = prop_widgets_new();
2076   widgets->vtl = vtl;
2077   widgets->tr = tr;
2078   widgets->profile_width  = PROPWIN_PROFILE_WIDTH;
2079   widgets->profile_height = PROPWIN_PROFILE_HEIGHT;
2080   widgets->track_name = track_name;
2081   gchar *title = g_strdup_printf(_("%s - Track Properties"), track_name);
2082   GtkWidget *dialog = gtk_dialog_new_with_buttons (title,
2083                          parent,
2084                          GTK_DIALOG_DESTROY_WITH_PARENT | GTK_DIALOG_NO_SEPARATOR,
2085                          GTK_STOCK_CANCEL, GTK_RESPONSE_REJECT,
2086                          _("Split at _Marker"), VIK_TRW_LAYER_PROPWIN_SPLIT_MARKER,
2087                          _("Split _Segments"), VIK_TRW_LAYER_PROPWIN_SPLIT,
2088                          _("_Reverse"),        VIK_TRW_LAYER_PROPWIN_REVERSE,
2089                          _("_Delete Dupl."),   VIK_TRW_LAYER_PROPWIN_DEL_DUP,
2090                          GTK_STOCK_OK,     GTK_RESPONSE_ACCEPT,
2091                          NULL);
2092   widgets->dialog = dialog;
2093   g_free(title);
2094   g_signal_connect(dialog, "response", G_CALLBACK(propwin_response_cb), widgets);
2095   GtkTable *table;
2096   gdouble tr_len;
2097   guint32 tp_count, seg_count;
2098
2099   gdouble min_alt, max_alt;
2100   widgets->elev_box = vik_trw_layer_create_profile(GTK_WIDGET(parent), tr, vlp, vvp, widgets, &min_alt, &max_alt);
2101   widgets->speed_box = vik_trw_layer_create_vtdiag(GTK_WIDGET(parent), tr, vlp, vvp, widgets);
2102   widgets->dist_box = vik_trw_layer_create_dtdiag(GTK_WIDGET(parent), tr, vlp, vvp, widgets);
2103   widgets->elev_time_box = vik_trw_layer_create_etdiag(GTK_WIDGET(parent), tr, vlp, vvp, widgets);
2104   GtkWidget *graphs = gtk_notebook_new();
2105
2106   GtkWidget *content[20];
2107   int cnt;
2108   int i;
2109
2110   static gchar *label_texts[] = { N_("<b>Comment:</b>"), N_("<b>Track Length:</b>"), N_("<b>Trackpoints:</b>"), N_("<b>Segments:</b>"), N_("<b>Duplicate Points:</b>"), N_("<b>Max Speed:</b>"), N_("<b>Avg. Speed:</b>"), N_("<b>Avg. Dist. Between TPs:</b>"), N_("<b>Elevation Range:</b>"), N_("<b>Total Elevation Gain/Loss:</b>"), N_("<b>Start:</b>"), N_("<b>End:</b>"), N_("<b>Duration:</b>") };
2111   static gchar tmp_buf[50];
2112   gdouble tmp_speed;
2113
2114   cnt = 0;
2115   widgets->w_comment = gtk_entry_new ();
2116   if ( tr->comment )
2117     gtk_entry_set_text ( GTK_ENTRY(widgets->w_comment), tr->comment );
2118   g_signal_connect_swapped ( widgets->w_comment, "activate", G_CALLBACK(a_dialog_response_accept), GTK_DIALOG(dialog) );
2119   content[cnt++] = widgets->w_comment;
2120
2121   vik_units_distance_t dist_units = a_vik_get_units_distance ();
2122
2123   tr_len = widgets->track_length = vik_track_get_length(tr);
2124   switch (dist_units) {
2125   case VIK_UNITS_DISTANCE_KILOMETRES:
2126     g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f km", tr_len/1000.0 );
2127     break;
2128   case VIK_UNITS_DISTANCE_MILES:
2129     g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f miles", VIK_METERS_TO_MILES(tr_len) );
2130     break;
2131   default:
2132     g_critical("Houston, we've had a problem. distance=%d", dist_units);
2133   }
2134   widgets->w_track_length = content[cnt++] = gtk_label_new ( tmp_buf );
2135
2136   tp_count = vik_track_get_tp_count(tr);
2137   g_snprintf(tmp_buf, sizeof(tmp_buf), "%u", tp_count );
2138   widgets->w_tp_count = content[cnt++] = gtk_label_new ( tmp_buf );
2139
2140   seg_count = vik_track_get_segment_count(tr) ;
2141   g_snprintf(tmp_buf, sizeof(tmp_buf), "%u", seg_count );
2142   widgets->w_segment_count = content[cnt++] = gtk_label_new ( tmp_buf );
2143
2144   g_snprintf(tmp_buf, sizeof(tmp_buf), "%lu", vik_track_get_dup_point_count(tr) );
2145   widgets->w_duptp_count = content[cnt++] = gtk_label_new ( tmp_buf );
2146
2147   vik_units_speed_t speed_units = a_vik_get_units_speed ();
2148   tmp_speed = vik_track_get_max_speed(tr);
2149   if ( tmp_speed == 0 )
2150     g_snprintf(tmp_buf, sizeof(tmp_buf), _("No Data"));
2151   else {
2152     switch (speed_units) {
2153     case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
2154       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f km/h", VIK_MPS_TO_KPH(tmp_speed));
2155       break;
2156     case VIK_UNITS_SPEED_MILES_PER_HOUR:
2157       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f mph", VIK_MPS_TO_MPH(tmp_speed));
2158       break;
2159     case VIK_UNITS_SPEED_METRES_PER_SECOND:
2160       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f m/s", tmp_speed );
2161       break;
2162     case VIK_UNITS_SPEED_KNOTS:
2163       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f knots", VIK_MPS_TO_KNOTS(tmp_speed));
2164       break;
2165     default:
2166       g_snprintf (tmp_buf, sizeof(tmp_buf), "--" );
2167       g_critical("Houston, we've had a problem. speed=%d", speed_units);
2168     }
2169   }
2170   widgets->w_max_speed = content[cnt++] = gtk_label_new ( tmp_buf );
2171
2172   tmp_speed = vik_track_get_average_speed(tr);
2173   if ( tmp_speed == 0 )
2174     g_snprintf(tmp_buf, sizeof(tmp_buf), _("No Data"));
2175   else {
2176     switch (speed_units) {
2177     case VIK_UNITS_SPEED_KILOMETRES_PER_HOUR:
2178       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f km/h", VIK_MPS_TO_KPH(tmp_speed));
2179       break;
2180     case VIK_UNITS_SPEED_MILES_PER_HOUR:
2181       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f mph", VIK_MPS_TO_MPH(tmp_speed));
2182       break;
2183     case VIK_UNITS_SPEED_METRES_PER_SECOND:
2184       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f m/s", tmp_speed );
2185       break;
2186     case VIK_UNITS_SPEED_KNOTS:
2187       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f knots", VIK_MPS_TO_KNOTS(tmp_speed));
2188       break;
2189     default:
2190       g_snprintf (tmp_buf, sizeof(tmp_buf), "--" );
2191       g_critical("Houston, we've had a problem. speed=%d", speed_units);
2192     }
2193   }
2194   widgets->w_avg_speed = content[cnt++] = gtk_label_new ( tmp_buf );
2195
2196   switch (dist_units) {
2197   case VIK_UNITS_DISTANCE_KILOMETRES:
2198     // Even though kilometres, the average distance between points is going to be quite small so keep in metres
2199     g_snprintf(tmp_buf, sizeof(tmp_buf), "%.2f m", (tp_count - seg_count) == 0 ? 0 : tr_len / ( tp_count - seg_count ) );
2200     break;
2201   case VIK_UNITS_DISTANCE_MILES:
2202     g_snprintf(tmp_buf, sizeof(tmp_buf), "%.3f miles", (tp_count - seg_count) == 0 ? 0 : VIK_METERS_TO_MILES(tr_len / ( tp_count - seg_count )) );
2203     break;
2204   default:
2205     g_critical("Houston, we've had a problem. distance=%d", dist_units);
2206   }
2207   widgets->w_avg_dist = content[cnt++] = gtk_label_new ( tmp_buf );
2208
2209   vik_units_height_t height_units = a_vik_get_units_height ();
2210   if ( min_alt == VIK_DEFAULT_ALTITUDE )
2211     g_snprintf(tmp_buf, sizeof(tmp_buf), _("No Data"));
2212   else {
2213     switch (height_units) {
2214     case VIK_UNITS_HEIGHT_METRES:
2215       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.0f m - %.0f m", min_alt, max_alt );
2216       break;
2217     case VIK_UNITS_HEIGHT_FEET:
2218       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.0f feet - %.0f feet", VIK_METERS_TO_FEET(min_alt), VIK_METERS_TO_FEET(max_alt) );
2219       break;
2220     default:
2221       g_snprintf(tmp_buf, sizeof(tmp_buf), "--" );
2222       g_critical("Houston, we've had a problem. height=%d", height_units);
2223     }
2224   }
2225   widgets->w_elev_range = content[cnt++] = gtk_label_new ( tmp_buf );
2226
2227   vik_track_get_total_elevation_gain(tr, &max_alt, &min_alt );
2228   if ( min_alt == VIK_DEFAULT_ALTITUDE )
2229     g_snprintf(tmp_buf, sizeof(tmp_buf), _("No Data"));
2230   else {
2231     switch (height_units) {
2232     case VIK_UNITS_HEIGHT_METRES:
2233       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.0f m / %.0f m", max_alt, min_alt );
2234       break;
2235     case VIK_UNITS_HEIGHT_FEET:
2236       g_snprintf(tmp_buf, sizeof(tmp_buf), "%.0f feet / %.0f feet", VIK_METERS_TO_FEET(max_alt), VIK_METERS_TO_FEET(min_alt) );
2237       break;
2238     default:
2239       g_snprintf(tmp_buf, sizeof(tmp_buf), "--" );
2240       g_critical("Houston, we've had a problem. height=%d", height_units);
2241     }
2242   }
2243   widgets->w_elev_gain = content[cnt++] = gtk_label_new ( tmp_buf );
2244
2245 #if 0
2246 #define PACK(w) gtk_box_pack_start (GTK_BOX(right_vbox), w, FALSE, FALSE, 0);
2247   gtk_box_pack_start (GTK_BOX(right_vbox), e_cmt, FALSE, FALSE, 0);
2248   PACK(l_len);
2249   PACK(l_tps);
2250   PACK(l_segs);
2251   PACK(l_dups);
2252   PACK(l_maxs);
2253   PACK(l_avgs);
2254   PACK(l_avgd);
2255   PACK(l_elev);
2256   PACK(l_galo);
2257 #undef PACK;
2258 #endif
2259
2260   if ( tr->trackpoints && VIK_TRACKPOINT(tr->trackpoints->data)->timestamp )
2261   {
2262     time_t t1, t2;
2263     t1 = VIK_TRACKPOINT(tr->trackpoints->data)->timestamp;
2264     t2 = VIK_TRACKPOINT(g_list_last(tr->trackpoints)->data)->timestamp;
2265
2266     strncpy(tmp_buf, ctime(&t1), sizeof(tmp_buf));
2267     tmp_buf[sizeof(tmp_buf)-1] = 0;
2268     g_strchomp(tmp_buf);
2269     widgets->w_time_start = content[cnt++] = gtk_label_new(tmp_buf);
2270
2271     strncpy(tmp_buf, ctime(&t2), sizeof(tmp_buf));
2272     tmp_buf[sizeof(tmp_buf)-1] = 0;
2273     g_strchomp(tmp_buf);
2274     widgets->w_time_end = content[cnt++] = gtk_label_new(tmp_buf);
2275
2276     g_snprintf(tmp_buf, sizeof(tmp_buf), _("%d minutes"), (int)(t2-t1)/60);
2277     widgets->w_time_dur = content[cnt++] = gtk_label_new(tmp_buf);
2278   } else {
2279     widgets->w_time_start = content[cnt++] = gtk_label_new(_("No Data"));
2280     widgets->w_time_end = content[cnt++] = gtk_label_new(_("No Data"));
2281     widgets->w_time_dur = content[cnt++] = gtk_label_new(_("No Data"));
2282   }
2283
2284   table = GTK_TABLE(gtk_table_new (cnt, 2, FALSE));
2285   gtk_table_set_col_spacing (table, 0, 10);
2286   for (i=0; i<cnt; i++) {
2287     GtkWidget *label;
2288
2289     // Settings so the text positioning only moves around vertically when the dialog is resized
2290     // This also gives more room to see the track comment
2291     label = gtk_label_new(NULL);
2292     gtk_misc_set_alignment ( GTK_MISC(label), 1, 0.5 ); // Position text centrally in vertical plane
2293     gtk_label_set_markup ( GTK_LABEL(label), _(label_texts[i]) );
2294     gtk_table_attach ( table, label, 0, 1, i, i+1, GTK_FILL, GTK_SHRINK, 0, 0 );
2295     if (GTK_IS_MISC(content[i])) {
2296       gtk_misc_set_alignment ( GTK_MISC(content[i]), 0, 0.5 );
2297     }
2298     gtk_table_attach_defaults ( table, content[i], 1, 2, i, i+1 );
2299   }
2300
2301   gtk_notebook_append_page(GTK_NOTEBOOK(graphs), GTK_WIDGET(table), gtk_label_new(_("Statistics")));
2302
2303   gpointer *pass_along;
2304   pass_along = g_malloc ( sizeof(gpointer) * 4 ); /* FIXME: mem leak -- never be freed */
2305   pass_along[0] = tr;
2306   pass_along[1] = vlp;
2307   pass_along[2] = vvp;
2308   pass_along[3] = widgets;
2309
2310   if ( widgets->elev_box ) {
2311     GtkWidget *page = NULL;
2312     widgets->w_cur_dist = gtk_label_new(_("No Data"));
2313     widgets->w_cur_elevation = gtk_label_new(_("No Data"));
2314     widgets->w_show_dem = gtk_check_button_new_with_mnemonic(_("Show D_EM"));
2315     widgets->w_show_alt_gps_speed = gtk_check_button_new_with_mnemonic(_("Show _GPS Speed"));
2316     page = create_graph_page (widgets->elev_box,
2317                               _("<b>Track Distance:</b>"), widgets->w_cur_dist,
2318                               _("<b>Track Height:</b>"), widgets->w_cur_elevation,
2319                               widgets->w_show_dem, TRUE,
2320                               widgets->w_show_alt_gps_speed, TRUE);
2321     g_signal_connect (widgets->w_show_dem, "toggled", G_CALLBACK (checkbutton_toggle_cb), pass_along);
2322     g_signal_connect (widgets->w_show_alt_gps_speed, "toggled", G_CALLBACK (checkbutton_toggle_cb), pass_along);
2323     gtk_notebook_append_page(GTK_NOTEBOOK(graphs), page, gtk_label_new(_("Elevation-distance")));
2324   }
2325
2326   if ( widgets->speed_box ) {
2327     GtkWidget *page = NULL;
2328     widgets->w_cur_time = gtk_label_new(_("No Data"));
2329     widgets->w_cur_speed = gtk_label_new(_("No Data"));
2330     widgets->w_show_gps_speed = gtk_check_button_new_with_mnemonic(_("Show _GPS Speed"));
2331     page = create_graph_page (widgets->speed_box,
2332                               _("<b>Track Time:</b>"), widgets->w_cur_time,
2333                               _("<b>Track Speed:</b>"), widgets->w_cur_speed,
2334                               widgets->w_show_gps_speed, TRUE,
2335                               NULL, FALSE);
2336     g_signal_connect (widgets->w_show_gps_speed, "toggled", G_CALLBACK (checkbutton_toggle_cb), pass_along);
2337     gtk_notebook_append_page(GTK_NOTEBOOK(graphs), page, gtk_label_new(_("Speed-time")));
2338   }
2339
2340   if ( widgets->dist_box ) {
2341     GtkWidget *page = NULL;
2342     widgets->w_cur_dist_time = gtk_label_new(_("No Data"));
2343     widgets->w_cur_dist_dist = gtk_label_new(_("No Data"));
2344     widgets->w_show_dist_speed = gtk_check_button_new_with_mnemonic(_("Show S_peed"));
2345     page = create_graph_page (widgets->dist_box,
2346                               _("<b>Track Distance:</b>"), widgets->w_cur_dist_dist,
2347                               _("<b>Track Time:</b>"), widgets->w_cur_dist_time,
2348                               widgets->w_show_dist_speed, FALSE,
2349                               NULL, FALSE);
2350     g_signal_connect (widgets->w_show_dist_speed, "toggled", G_CALLBACK (checkbutton_toggle_cb), pass_along);
2351     gtk_notebook_append_page(GTK_NOTEBOOK(graphs), page, gtk_label_new(_("Distance-time")));
2352   }
2353
2354   if ( widgets->elev_time_box ) {
2355     GtkWidget *page = NULL;
2356     widgets->w_cur_elev_time = gtk_label_new(_("No Data"));
2357     widgets->w_cur_elev_elev = gtk_label_new(_("No Data"));
2358     widgets->w_show_elev_speed = gtk_check_button_new_with_mnemonic(_("Show S_peed"));
2359     page = create_graph_page (widgets->elev_time_box,
2360                               _("<b>Track Time:</b>"), widgets->w_cur_elev_time,
2361                               _("<b>Track Height:</b>"), widgets->w_cur_elev_elev,
2362                               widgets->w_show_elev_speed, FALSE,
2363                               NULL, FALSE);
2364     g_signal_connect (widgets->w_show_elev_speed, "toggled", G_CALLBACK (checkbutton_toggle_cb), pass_along);
2365     gtk_notebook_append_page(GTK_NOTEBOOK(graphs), page, gtk_label_new(_("Elevation-time")));
2366   }
2367
2368   gtk_box_pack_start (GTK_BOX(GTK_DIALOG(dialog)->vbox), graphs, FALSE, FALSE, 0);
2369
2370   gtk_dialog_set_response_sensitive(GTK_DIALOG(dialog), VIK_TRW_LAYER_PROPWIN_SPLIT_MARKER, FALSE);
2371   if (seg_count <= 1)
2372     gtk_dialog_set_response_sensitive(GTK_DIALOG(dialog), VIK_TRW_LAYER_PROPWIN_SPLIT, FALSE);
2373   if (vik_track_get_dup_point_count(tr) <= 0)
2374     gtk_dialog_set_response_sensitive(GTK_DIALOG(dialog), VIK_TRW_LAYER_PROPWIN_DEL_DUP, FALSE);
2375
2376   // On dialog realization configure_event casues the graphs to be initially drawn
2377   widgets->configure_dialog = TRUE;
2378   g_signal_connect ( G_OBJECT(dialog), "configure-event", G_CALLBACK (configure_event), pass_along);
2379
2380   vik_track_set_property_dialog(tr, dialog);
2381   gtk_dialog_set_default_response ( GTK_DIALOG(dialog), GTK_RESPONSE_ACCEPT );
2382   gtk_widget_show_all ( dialog );
2383 }