err.no Git - mapper/blob - src/map.c

   1 /*
   2  * This file is part of mapper
   3  *
   4  * Copyright (C) 2007 Kaj-Michael Lang
   5  * Copyright (C) 2006-2007 John Costigan.
   6  *
   7  * POI and GPS-Info code originally written by Cezary Jackiewicz.
   8  *
   9  * Default map data provided by http://www.openstreetmap.org/
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License along
  22  * with this program; if not, write to the Free Software Foundation, Inc.,
  23  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  24  */
  25
  26 #include <config.h>
  27
  28 #include <unistd.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <strings.h>
  32 #include <stddef.h>
  33 #include <math.h>
  34 #include <errno.h>
  35 #include <sys/wait.h>
  36 #include <glib/gstdio.h>
  37 #include <gtk/gtk.h>
  38 #include <fcntl.h>
  39 #include <libintl.h>
  40 #include <locale.h>
  41
  42 #include "hildon-mapper.h"
  43
  44 #include "utils.h"
  45 #include "map.h"
  46 #include "osm.h"
  47 #include "db.h"
  48 #include "osm-db.h"
  49 #include "poi.h"
  50 #include "route.h"
  51 #include "track.h"
  52 #include "gps.h"
  53 #include "mapper-types.h"
  54 #include "ui-common.h"
  55 #include "settings.h"
  56 #include "latlon.h"
  57 #include "gpx.h"
  58 #include "speak.h"
  59 #include "map-poi.h"
  60 #include "map-download.h"
  61 #include "announcements.h"
  62 #include "gtkcompass.h"
  63
  64 #define DEBUG_MAP_TIME 1
  65
  66 /** The "base tile" is the upper-left tile in the pixmap. */
  67 guint _base_tilex = -5;
  68 guint _base_tiley = -5;
  69
  70 guint _zoom = 3;                /* zoom level, from 0 to MAX_ZOOM. */
  71
  72 Point _min_center = { -1, -1 };
  73 Point _max_center = { -1, -1 };
  74 Point _focus = { -1, -1 };
  75 Point _center = { -1, -1 };     /* current center location, X. */
  76
  77 CenterMode _center_mode = CENTER_LEAD;
  78
  79 /* Drag */
  80 static guint press[2] = { 0, 0 };
  81 static guint release[2] = { 0, 0 };
  82 static guint before[2] = { 0, 0 };
  83 static guint map_drag_id = 0;
  84
  85 /** VARIABLES FOR ACCESSING THE LOCATION/BOUNDS OF THE CURRENT MARK. */
  86 static gint mark_x1;
  87 static gint mark_x2;
  88 static gint mark_y1;
  89 static gint mark_y2;
  90 static gint mark_minx;
  91 static gint mark_miny;
  92 static gint mark_width;
  93 static gint mark_height;
  94
  95 static GdkRectangle scale_rect;
  96 static PangoContext *scale_context;
  97 static PangoFontDescription *scale_font;
  98 static PangoLayout *scale_layout;
  99
 100 static GdkGC *speed_gc1;
 101 static GdkGC *speed_gc2;
 102 static PangoContext *speed_context;
 103 static PangoLayout *speed_layout;
 104 static PangoFontDescription *speed_fontdesc;
 105
 106 static gint zoom_timeout_sid=0;
 107 static gint map_mode=0;
 108 static gboolean map_data_needs_refresh=FALSE;
 109
 110 osm_location map_loc = {NULL, NULL, NULL, FALSE, FALSE, 0, 0, 0.0, 0.0, 0 };
 111
 112 static GTimer *map_timer;
 113
 114 /* Tile max age, 1 week */
 115 #define TILE_MAX_AGE (604800)
 116
 117 #define KM10KNOTS (5.39956803)
 118
 119 void map_render_paths();
 120 void map_force_redraw();
 121 void map_draw_position_icon(Position *pos);
 122
 123 static void map_update_location(gdouble lat, gdouble lon, gboolean force);
 124 static void map_speed_draw(void);
 125 static gboolean map_cb_after_realize(GtkWidget *map_widget, gpointer data);
 126 static gboolean map_cb_configure(GtkWidget *widget, GdkEventConfigure *event);
 127 static gboolean map_cb_expose(GtkWidget * widget, GdkEventExpose * event);
 128 static gboolean map_cb_button_press(GtkWidget * widget, GdkEventButton * event);
 129 static gboolean map_cb_button_release(GtkWidget * widget, GdkEventButton * event);
 130 static gboolean map_cb_scroll_event(GtkWidget * widget, GdkEventScroll * event);
 131
 132 /******************************************************************************/
 133
 134 GtkWidget *
 135 map_new(void)
 136 {
 137 GtkWidget *map_widget;
 138
 139 map_widget=gtk_drawing_area_new();
 140 g_signal_connect_after(G_OBJECT(map_widget), "realize", G_CALLBACK(map_cb_after_realize), NULL);
 141 g_signal_connect(G_OBJECT(map_widget), "configure_event", G_CALLBACK(map_cb_configure), NULL);
 142 map_timer=g_timer_new();
 143 return map_widget;
 144 }
 145
 146 static gboolean
 147 map_cb_after_realize(GtkWidget *map_widget, gpointer data)
 148 {
 149 GdkColor color;
 150
 151 _map_pixmap=gdk_pixmap_new(map_widget->window, BUF_WIDTH_PIXELS, BUF_HEIGHT_PIXELS, -1);
 152
 153 scale_context=gtk_widget_get_pango_context(map_widget);
 154 scale_layout=pango_layout_new(scale_context);
 155 scale_font=pango_font_description_new();
 156 pango_font_description_set_size(scale_font, 12 * PANGO_SCALE);
 157 pango_layout_set_font_description(scale_layout, scale_font);
 158
 159 /* Speed limit */
 160 speed_gc1=gdk_gc_new(map_widget->window);
 161 color.red=0xffff;
 162 color.green=0;
 163 color.blue=0;
 164 gdk_gc_set_rgb_fg_color(speed_gc1, &color);
 165 color.red=0;
 166 color.green=0;
 167 color.blue=0;
 168 speed_gc2=gdk_gc_new(map_widget->window);
 169 gdk_gc_set_rgb_fg_color(speed_gc2, &color);
 170 speed_context=gtk_widget_get_pango_context(map_widget);
 171 speed_layout=pango_layout_new(speed_context);
 172 speed_fontdesc=pango_font_description_new();
 173 pango_font_description_set_size(speed_fontdesc, 48 * PANGO_SCALE);
 174 pango_layout_set_font_description(speed_layout, speed_fontdesc);
 175 pango_layout_set_alignment(speed_layout, PANGO_ALIGN_CENTER);
 176
 177 /* Signals */
 178 g_signal_connect(G_OBJECT(map_widget), "expose_event", G_CALLBACK(map_cb_expose), NULL);
 179 g_signal_connect(G_OBJECT(map_widget), "button_press_event", G_CALLBACK(map_cb_button_press), NULL);
 180 g_signal_connect(G_OBJECT(map_widget), "button_release_event",G_CALLBACK(map_cb_button_release), NULL);
 181 g_signal_connect(G_OBJECT(map_widget), "scroll_event",  G_CALLBACK(map_cb_scroll_event), NULL);
 182
 183 gtk_widget_add_events(map_widget, GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
 184       | GDK_LEAVE_NOTIFY_MASK | GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK);
 185
 186 map_poi_init(map_widget);
 187
 188 return TRUE;
 189 }
 190
 191 static gboolean
 192 map_cb_configure(GtkWidget *widget, GdkEventConfigure *event)
 193 {
 194
 195 _screen_width_pixels = _map_widget->allocation.width;
 196 _screen_height_pixels = _map_widget->allocation.height;
 197 _screen_grids_halfwidth = pixel2grid(_screen_width_pixels) / 2;
 198 _screen_grids_halfheight = pixel2grid(_screen_height_pixels) / 2;
 199
 200 /* Set scale_rect. */
 201 scale_rect.x = (_screen_width_pixels - SCALE_WIDTH) / 2;
 202 scale_rect.width = SCALE_WIDTH;
 203
 204 MACRO_RECALC_FOCUS_BASE();
 205 MACRO_RECALC_FOCUS_SIZE();
 206
 207 _min_center.unitx = pixel2unit(grid2pixel(_screen_grids_halfwidth));
 208 _min_center.unity = pixel2unit(grid2pixel(_screen_grids_halfheight));
 209 _max_center.unitx = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfwidth) - 1;
 210 _max_center.unity = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfheight) - 1;
 211
 212 return TRUE;
 213 }
 214
 215 /**
 216  * Draw the current mark (representing the current GPS location) onto
 217  * _map_widget.  This method does not queue the draw area.
 218  */
 219 static void
 220 map_draw_mark(Gps *gps)
 221 {
 222 gdk_draw_arc(_map_widget->window, gps->io.conn == RCVR_FIXED ? _gc[COLORABLE_MARK] : _gc[COLORABLE_MARK_OLD], FALSE,
 223      mark_x1 - _draw_width, mark_y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0, 360 * 64);
 224 gdk_draw_line(_map_widget->window, gps->io.conn == RCVR_FIXED ? (_show_velvec ? _gc[COLORABLE_MARK_VELOCITY] : _gc[COLORABLE_MARK]) : _gc[COLORABLE_MARK_OLD],
 225       mark_x1, mark_y1, mark_x2, mark_y2);
 226 }
 227
 228 /**
 229  * "Set" the mark, which translates the current GPS position into on-screen
 230  * units in preparation for drawing the mark with map_draw_mark().
 231  */
 232 void
 233 map_set_mark(GpsData *gps)
 234 {
 235 mark_x1 = unit2x(gps->unitx);
 236 mark_y1 = unit2y(gps->unity);
 237 mark_x2 = mark_x1 + (_show_velvec ? gps->vel_offsetx : 0);
 238 mark_y2 = mark_y1 + (_show_velvec ? gps->vel_offsety : 0);
 239 mark_minx = MIN(mark_x1, mark_x2) - (2 * _draw_width);
 240 mark_miny = MIN(mark_y1, mark_y2) - (2 * _draw_width);
 241 mark_width = abs(mark_x1 - mark_x2) + (4 * _draw_width);
 242 mark_height = abs(mark_y1 - mark_y2) + (4 * _draw_width);
 243 }
 244
 245 /**
 246  * Do an in-place scaling of a pixbuf's pixels at the given ratio from the
 247  * given source location.  It would have been nice if gdk_pixbuf provided
 248  * this method, but I guess it's not general-purpose enough.
 249  */
 250 static void
 251 map_pixbuf_scale_inplace(GdkPixbuf * pixbuf, guint ratio_p2, guint src_x, guint src_y)
 252 {
 253 guint dest_x = 0, dest_y = 0, dest_dim = TILE_SIZE_PIXELS;
 254 guint rowstride = gdk_pixbuf_get_rowstride(pixbuf);
 255 guint n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 256 guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 257
 258 /* Sweep through the entire dest area, copying as necessary, but
 259  * DO NOT OVERWRITE THE SOURCE AREA.  We'll copy it afterward. */
 260 do {
 261         guint src_dim = dest_dim >> ratio_p2;
 262         guint src_endx = src_x - dest_x + src_dim;
 263         gint x, y;
 264
 265         for (y = dest_dim - 1; y >= 0; y--) {
 266                 guint src_offset_y, dest_offset_y;
 267
 268                 src_offset_y = (src_y + (y >> ratio_p2)) * rowstride;
 269                 dest_offset_y = (dest_y + y) * rowstride;
 270                 x = dest_dim - 1;
 271
 272                 if ((unsigned)(dest_y + y - src_y) < src_dim && (unsigned)(dest_x + x - src_x) < src_dim)
 273                         x -= src_dim;
 274
 275                 for (; x >= 0; x--) {
 276                         guint src_offset, dest_offset, i;
 277
 278                         src_offset = src_offset_y + (src_x + (x >> ratio_p2)) * n_channels;
 279                         dest_offset = dest_offset_y + (dest_x + x) * n_channels;
 280
 281                         pixels[dest_offset] = pixels[src_offset];
 282                         for (i = n_channels - 1; i; i--)
 283                                 pixels[dest_offset + i] = pixels[src_offset + i];
 284
 285                         if ((unsigned)(dest_y + y - src_y) < src_dim && x == src_endx)
 286                                 x -= src_dim;
 287                 }
 288         }
 289
 290         /* Reuse src_dim and src_endx to store new src_x and src_y. */
 291         src_dim = src_x + ((src_x - dest_x) >> ratio_p2);
 292         src_endx = src_y + ((src_y - dest_y) >> ratio_p2);
 293         dest_x = src_x;
 294         dest_y = src_y;
 295         src_x = src_dim;
 296         src_y = src_endx;
 297 }
 298 while ((dest_dim >>= ratio_p2) > 1);
 299 }
 300
 301 /**
 302  * Trim pixbufs that are bigger than tiles. (Those pixbufs result, when
 303  * captions should be cut off.)
 304  */
 305 static GdkPixbuf *
 306 pixbuf_trim(GdkPixbuf * pixbuf)
 307 {
 308 GdkPixbuf *mpixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf),
 309                    8, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 310
 311 gdk_pixbuf_copy_area(pixbuf,
 312                      (gdk_pixbuf_get_width(pixbuf) - TILE_SIZE_PIXELS) / 2,
 313                      (gdk_pixbuf_get_height(pixbuf) - TILE_SIZE_PIXELS) / 2,
 314                      TILE_SIZE_PIXELS,
 315                      TILE_SIZE_PIXELS, mpixbuf, 0, 0);
 316
 317 g_object_unref(pixbuf);
 318 return mpixbuf;
 319 }
 320
 321 static GdkPixbuf *
 322 map_tile_load(guint tilex, guint tiley, gint zoff, gboolean download)
 323 {
 324 GdkPixbuf *pixbuf;
 325 GError *error = NULL;
 326 gchar buffer[BUFFER_SIZE];
 327 struct stat tstat;
 328 gint se;
 329
 330 g_snprintf(buffer, sizeof(buffer), "%s/%u/%u/%u.jpg", _curr_repo->cache_dir, _zoom + zoff, (tilex >> zoff), (tiley >> zoff));
 331
 332 pixbuf=gdk_pixbuf_new_from_file(buffer, &error);
 333 if (error || !pixbuf) {
 334         g_unlink(buffer);
 335
 336         if (_auto_download && _curr_repo->type != REPOTYPE_NONE && !((_zoom + zoff - (_curr_repo->double_size ? 1 : 0)) % _curr_repo->dl_zoom_steps)) {
 337                 if (download)
 338                         map_initiate_download(tilex >> zoff, tiley >> zoff, _zoom + zoff, -INITIAL_DOWNLOAD_RETRIES);
 339         }
 340
 341         return NULL;
 342 }
 343
 344 /* Check tile age, if file date is ower a week old, redownload if autodownload enabled */
 345 se=stat(buffer, &tstat);
 346 if (se==0) {
 347         time_t t;
 348         t=time(NULL);
 349         if (t-tstat.st_mtime>TILE_MAX_AGE) {
 350                 if (_auto_download && _curr_repo->type != REPOTYPE_NONE && !((_zoom + zoff - (_curr_repo->double_size ? 1 : 0)) % _curr_repo->dl_zoom_steps)) {
 351                         if (download) {
 352                                 g_printf("Tile: %s is old, re-downloading\n", buffer);
 353                                 map_initiate_download(tilex >> zoff, tiley >> zoff, _zoom + zoff, -INITIAL_DOWNLOAD_RETRIES);
 354                         }
 355                 }
 356         }
 357 }
 358
 359 return pixbuf;
 360 }
 361
 362 void
 363 map_render_tile(guint tilex, guint tiley, guint destx, guint desty, gboolean fast_fail)
 364 {
 365 GdkPixbuf *pixbuf=NULL;
 366 gint zoff;
 367
 368 if (tilex<_world_size_tiles && tiley<_world_size_tiles) {
 369         /* The tile is possible. */
 370         for (zoff = (_curr_repo->double_size ? 1 : 0); !pixbuf && (_zoom + zoff) <= MAX_ZOOM && zoff <= TILE_SIZE_P2; zoff += 1) {
 371                 pixbuf=map_tile_load(tilex, tiley, zoff, !fast_fail);
 372                 if (!pixbuf) {
 373                         if (!fast_fail)
 374                                 fast_fail=TRUE;
 375                 } else {
 376                         /* Check if we need to trim. */
 377                         if (gdk_pixbuf_get_width(pixbuf) != TILE_SIZE_PIXELS || gdk_pixbuf_get_height(pixbuf) != TILE_SIZE_PIXELS)
 378                                 pixbuf = pixbuf_trim(pixbuf);
 379
 380                         /* Check if we need to blit. */
 381                         if (zoff) {
 382                                 map_pixbuf_scale_inplace(pixbuf, zoff,
 383                                                  (tilex - ((tilex >> zoff) << zoff)) << (TILE_SIZE_P2 - zoff),
 384                                                  (tiley - ((tiley >> zoff) << zoff)) << (TILE_SIZE_P2 - zoff));
 385                         }
 386                 }
 387         }
 388 }
 389
 390 if (pixbuf) {
 391         gdk_draw_pixbuf(_map_pixmap, _gc[COLORABLE_MARK], pixbuf, 0, 0, destx, desty, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS, GDK_RGB_DITHER_NONE, 0, 0);
 392         g_object_unref(pixbuf);
 393         return;
 394 }
 395 gdk_draw_rectangle(_map_pixmap, _map_widget->style->black_gc, TRUE, destx, desty, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 396 }
 397
 398 void
 399 map_render_data(void)
 400 {
 401 /* Don't update if dragging, too much lag */
 402 if (map_drag_id>0)
 403         return;
 404
 405 if (_home.valid)
 406         map_draw_position_icon(&_home);
 407 if(_show_poi)
 408         map_render_all_pois();
 409 if(_show_tracks>0)
 410         map_render_paths();
 411 }
 412
 413 /**
 414  * Force a redraw of the entire _map_pixmap, including fetching the
 415  * background maps from disk and redrawing the tracks on top of them.
 416  */
 417 void
 418 map_force_redraw(void)
 419 {
 420 guint new_x, new_y;
 421 #ifdef DEBUG_MAP_TIME
 422 gulong tms;
 423
 424 g_timer_start(map_timer);
 425 #endif
 426 for (new_y = 0; new_y < BUF_HEIGHT_TILES; ++new_y)
 427         for (new_x = 0; new_x < BUF_WIDTH_TILES; ++new_x) {
 428                 map_render_tile(_base_tilex + new_x,
 429                                 _base_tiley + new_y,
 430                                 new_x * TILE_SIZE_PIXELS,
 431                                 new_y * TILE_SIZE_PIXELS, FALSE);
 432         }
 433 #ifdef DEBUG_MAP_TIME
 434 g_timer_stop(map_timer);
 435 g_printf("Full redraw: %f sec\n", g_timer_elapsed(map_timer, &tms));
 436 #endif
 437 map_render_data();
 438 MACRO_QUEUE_DRAW_AREA();
 439 }
 440
 441 /**
 442  * Set the current zoom level.  If the given zoom level is the same as the
 443  * current zoom level, or if the new zoom is invalid
 444  * (not MIN_ZOOM <= new_zoom < MAX_ZOOM), then this method does nothing.
 445  */
 446 void
 447 map_set_zoom(guint new_zoom)
 448 {
 449 /* Note that, since new_zoom is a guint and MIN_ZOOM is 0, this if
 450  * condition also checks for new_zoom >= MIN_ZOOM. */
 451 if (new_zoom > (MAX_ZOOM - 1))
 452         return;
 453 if (new_zoom == _zoom)
 454         return;
 455
 456 _zoom = new_zoom / _curr_repo->view_zoom_steps * _curr_repo->view_zoom_steps;
 457 _world_size_tiles = unit2tile(WORLD_SIZE_UNITS);
 458
 459 /* If we're leading, update the center to reflect new zoom level. */
 460 MACRO_RECALC_CENTER(_gps->data, _center.unitx, _center.unity);
 461
 462 /* Update center bounds to reflect new zoom level. */
 463 _min_center.unitx = pixel2unit(grid2pixel(_screen_grids_halfwidth));
 464 _min_center.unity = pixel2unit(grid2pixel(_screen_grids_halfheight));
 465 _max_center.unitx = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfwidth) - 1;
 466 _max_center.unity = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfheight) - 1;
 467
 468 BOUND(_center.unitx, _min_center.unitx, _max_center.unitx);
 469 BOUND(_center.unity, _min_center.unity, _max_center.unity);
 470
 471 _base_tilex = grid2tile((gint) pixel2grid((gint) unit2pixel((gint) _center.unitx)) - (gint) _screen_grids_halfwidth);
 472 _base_tiley = grid2tile(pixel2grid(unit2pixel(_center.unity)) - _screen_grids_halfheight);
 473
 474 /* New zoom level, so we can't reuse the old buffer's pixels. */
 475 /* Update state variables. */
 476 MACRO_RECALC_OFFSET();
 477 MACRO_RECALC_FOCUS_BASE();
 478 MACRO_RECALC_FOCUS_SIZE();
 479
 480 map_set_mark(&_gps->data);
 481 map_force_redraw();
 482 }
 483
 484 /**
 485  * Center the view on the given unitx/unity.
 486  */
 487 void
 488 map_center_unit(guint new_center_unitx, guint new_center_unity)
 489 {
 490 gint new_base_tilex, new_base_tiley;
 491 guint new_x, new_y;
 492 guint j, k, base_new_x, base_old_x, old_x, old_y, iox, ioy;
 493
 494 /* Assure that _center.unitx/y are bounded. */
 495 BOUND(new_center_unitx, _min_center.unitx, _max_center.unitx);
 496 BOUND(new_center_unity, _min_center.unity, _max_center.unity);
 497
 498 _center.unitx = new_center_unitx;
 499 _center.unity = new_center_unity;
 500
 501 new_base_tilex = grid2tile((gint) pixel2grid((gint)unit2pixel((gint) _center.unitx)) - (gint)_screen_grids_halfwidth);
 502 new_base_tiley = grid2tile(pixel2grid(unit2pixel(_center.unity)) - _screen_grids_halfheight);
 503
 504 /* Same zoom level, so it's likely that we can reuse some of the old
 505  * buffer's pixels. */
 506
 507 if (new_base_tilex != _base_tilex || new_base_tiley != _base_tiley) {
 508         /* If copying from old parts to new parts, we need to make sure we
 509          * don't overwrite the old parts when copying, so set up new_x,
 510          * new_y, old_x, old_y, iox, and ioy with that in mind. */
 511         if (new_base_tiley < _base_tiley) {
 512                 /* New is lower than old - start at bottom and go up. */
 513                 new_y = BUF_HEIGHT_TILES - 1;
 514                 ioy = -1;
 515         } else {
 516                 /* New is higher than old - start at top and go down. */
 517                 new_y = 0;
 518                 ioy = 1;
 519         }
 520         if (new_base_tilex < _base_tilex) {
 521                 /* New is righter than old - start at right and go left. */
 522                 base_new_x = BUF_WIDTH_TILES - 1;
 523                 iox = -1;
 524         } else {
 525                 /* New is lefter than old - start at left and go right. */
 526                 base_new_x = 0;
 527                 iox = 1;
 528         }
 529
 530         /* Iterate over the y tile values. */
 531         old_y = new_y + new_base_tiley - _base_tiley;
 532         base_old_x = base_new_x + new_base_tilex - _base_tilex;
 533         _base_tilex = new_base_tilex;
 534         _base_tiley = new_base_tiley;
 535         for (j = 0; j < BUF_HEIGHT_TILES; ++j, new_y += ioy, old_y += ioy) {
 536                 new_x = base_new_x;
 537                 old_x = base_old_x;
 538                 /* Iterate over the x tile values. */
 539                 for (k = 0; k < BUF_WIDTH_TILES; ++k, new_x += iox, old_x += iox) {
 540                         /* Can we get this grid block from the old buffer?. */
 541                         if (old_x >= 0 && old_x < BUF_WIDTH_TILES && old_y >= 0 && old_y < BUF_HEIGHT_TILES) {
 542                                 /* Copy from old buffer to new buffer. */
 543                                 gdk_draw_drawable(_map_pixmap,
 544                                                   _gc[COLORABLE_MARK],
 545                                                   _map_pixmap,
 546                                                   old_x * TILE_SIZE_PIXELS,
 547                                                   old_y * TILE_SIZE_PIXELS,
 548                                                   new_x * TILE_SIZE_PIXELS,
 549                                                   new_y * TILE_SIZE_PIXELS,
 550                                                   TILE_SIZE_PIXELS,
 551                                                   TILE_SIZE_PIXELS);
 552                         } else {
 553                                 map_render_tile(new_base_tilex + new_x,
 554                                                 new_base_tiley + new_y,
 555                                                 new_x * TILE_SIZE_PIXELS,
 556                                                 new_y * TILE_SIZE_PIXELS,
 557                                                 FALSE);
 558                         }
 559                 }
 560         }
 561         map_render_data();
 562 }
 563
 564 MACRO_RECALC_OFFSET();
 565 MACRO_RECALC_FOCUS_BASE();
 566
 567 map_set_mark(&_gps->data);
 568 MACRO_QUEUE_DRAW_AREA();
 569 }
 570
 571 /**
 572  * Pan the view by the given number of units in the X and Y directions.
 573  */
 574 void
 575 map_pan(gint delta_unitx, gint delta_unity)
 576 {
 577 if (_center_mode > 0)
 578         set_action_activate("autocenter_none", TRUE);
 579
 580 map_center_unit(_center.unitx + delta_unitx, _center.unity + delta_unity);
 581 }
 582
 583 /**
 584  * Helper to center map on given lat/lon
 585  */
 586 void
 587 map_center_latlon(gdouble lat, gdouble lon)
 588 {
 589 guint unitx, unity;
 590
 591 latlon2unit(lat, lon, unitx, unity);
 592 map_center_unit(unitx, unity);
 593 }
 594
 595 /**
 596  * Helper to goto given point and update location
 597  *
 598  */
 599 gboolean
 600 map_goto_position(Position *pos)
 601 {
 602 if (pos->valid==FALSE)
 603         return FALSE;
 604
 605 _center_mode=CENTER_MANUAL;
 606 map_center_latlon(pos->lat, pos->lon);
 607 map_set_autozoom(FALSE, 0);
 608 g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_update_location_from_center, NULL, NULL);
 609 return TRUE;
 610 }
 611
 612 /**
 613  * Initiate a move of the mark from the old location to the current
 614  * location.  This function queues the draw area of the old mark (to force
 615  * drawing of the background map), then updates the mark, then queus the
 616  * draw area of the new mark.
 617  */
 618 void
 619 map_move_mark(void)
 620 {
 621 /* Just queue the old and new draw areas. */
 622 gtk_widget_queue_draw_area(_map_widget,
 623                    mark_minx<0 ? 0 : mark_minx,
 624                    mark_miny<0 ? 0 : mark_miny,
 625                    mark_width, mark_height);
 626 map_set_mark(&_gps->data);
 627 gtk_widget_queue_draw_area(_map_widget,
 628                    mark_minx<0 ? 0 : mark_minx,
 629                    mark_miny<0 ? 0 : mark_miny,
 630                    mark_width, mark_height);
 631 }
 632
 633 gboolean
 634 map_update_location_from_gps(Gps *gps)
 635 {
 636 g_assert(gps);
 637 map_update_location(gps->data.lat, gps->data.lon, FALSE);
 638 return FALSE;
 639 }
 640
 641 gboolean
 642 map_update_location_from_center(void)
 643 {
 644 gdouble lat, lon;
 645 /* Force re-validation of place if user is clicking around */
 646 map_loc.valid=FALSE;
 647 /* XXX: hmm, not the right place for this */
 648 #if 0
 649 if (_gps->fix==FIX_NOFIX) {
 650         _gps->data.unitx=_center.unitx;
 651         _gps->data.unity=_center.unity;
 652         unit2latlon(_gps->data.unitx, _gps->data.unity, _gps->data.lat, _gps->data.lon);
 653 }
 654 #endif
 655 unit2latlon(_center.unitx, _center.unity, lat, lon);
 656 map_update_location(lat, lon, TRUE);
 657 return FALSE;
 658 }
 659
 660 /**
 661  * Draw given pixbuf on map, centered on x,y
 662  */
 663 void
 664 map_draw_pixbuf(guint unitx, guint unity, GdkPixbuf *p)
 665 {
 666 gint x,y;
 667 x = unit2bufx(unitx);
 668 y = unit2bufy(unity);
 669
 670 gdk_draw_pixbuf(_map_pixmap, _gc[COLORABLE_POI],
 671         p, 0, 0,
 672         x - gdk_pixbuf_get_width(p) / 2,
 673         y - gdk_pixbuf_get_height(p) / 2,
 674         -1, -1, GDK_RGB_DITHER_NONE, 0, 0);
 675 }
 676
 677 /**
 678  * Draw an icon on given Position.
 679  *
 680  * XXX: don't hardcode as home.png !
 681  */
 682 void
 683 map_draw_position_icon(Position *pos)
 684 {
 685 guint x,y, x1,y1;
 686 GdkPixbuf *p;
 687
 688 latlon2unit(pos->lat, pos->lon, x, y);
 689 x1=unit2bufx(x);
 690 y1=unit2bufy(y);
 691
 692 if ((x1 > BUF_WIDTH_PIXELS) || (y1 > BUF_HEIGHT_PIXELS))
 693         return;
 694
 695 p=gdk_pixbuf_new_from_file(DATADIR "/pixmaps/mapper/home.png", NULL);
 696 if (p) {
 697         map_draw_pixbuf(x,y,p);
 698         g_object_unref(p);
 699 }
 700
 701 }
 702
 703 /**
 704  * Make sure the mark is up-to-date.  This function triggers a panning of
 705  * the view if the mark is appropriately close to the edge of the view.
 706  */
 707 void
 708 map_refresh_mark(void)
 709 {
 710 guint new_center_unitx;
 711 guint new_center_unity;
 712
 713 MACRO_RECALC_CENTER(_gps->data, new_center_unitx, new_center_unity);
 714
 715 if ((new_center_unitx - _focus.unitx) < _focus_unitwidth && (new_center_unity - _focus.unity) < _focus_unitheight)
 716         /* We're not changing the view - just move the mark. */
 717         map_move_mark();
 718 else
 719         map_center_unit(new_center_unitx, new_center_unity);
 720
 721 /* Draw speed info */
 722 if (_speed_on)
 723         map_speed_draw();
 724
 725 if (_center_mode>0)
 726         g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_update_location_from_gps, _gps, NULL);
 727 }
 728
 729 /**
 730  * Render a single track line to _map_pixmap.  If either point on the line
 731  * is a break (defined as unity == 0), a circle is drawn at the other point.
 732  * IT IS AN ERROR FOR BOTH POINTS TO INDICATE A BREAK.
 733  */
 734 void
 735 map_render_segment(GdkGC * gc_norm, GdkGC * gc_alt, guint unitx1, guint unity1, guint unitx2, guint unity2)
 736 {
 737         if (!unity1) {
 738                 guint x2, y2;
 739                 x2 = unit2bufx(unitx2);
 740                 y2 = unit2bufy(unity2);
 741                 /* Make sure this circle will be visible. */
 742                 if ((x2 < BUF_WIDTH_PIXELS) && (y2 < BUF_HEIGHT_PIXELS))
 743                         gdk_draw_arc(_map_pixmap, gc_alt, FALSE,        /* FALSE: not filled. */
 744                                      x2 - _draw_width, y2 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 745                                      360 * 64);
 746         } else if (!unity2) {
 747                 guint x1, y1;
 748                 x1 = unit2bufx(unitx1);
 749                 y1 = unit2bufy(unity1);
 750                 /* Make sure this circle will be visible. */
 751                 if ((x1 < BUF_WIDTH_PIXELS) && ((unsigned)y1 < BUF_HEIGHT_PIXELS))
 752                         gdk_draw_arc(_map_pixmap, gc_alt, FALSE,        /* FALSE: not filled. */
 753                                      x1 - _draw_width, y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 754                                      360 * 64);
 755         } else {
 756                 gint x1, y1, x2, y2;
 757                 x1 = unit2bufx(unitx1);
 758                 y1 = unit2bufy(unity1);
 759                 x2 = unit2bufx(unitx2);
 760                 y2 = unit2bufy(unity2);
 761                 /* Make sure this line could possibly be visible. */
 762                 if (!((x1 > BUF_WIDTH_PIXELS && x2 > BUF_WIDTH_PIXELS)
 763                       || (x1 < 0 && x2 < 0)
 764                       || (y1 > BUF_HEIGHT_PIXELS && y2 > BUF_HEIGHT_PIXELS)
 765                       || (y1 < 0 && y2 < 0)))
 766                         gdk_draw_line(_map_pixmap, gc_norm, x1, y1, x2, y2);
 767         }
 768 }
 769
 770 /**
 771  * Render all track data onto the _map_pixmap.  Note that this does not
 772  * clear the pixmap of previous track data (use map_force_redraw() for
 773  * that), and also note that this method does not queue any redraws, so it
 774  * is up to the caller to decide which part of the track really needs to be
 775  * redrawn.
 776  */
 777 void
 778 map_render_path(Path * path, GdkGC ** gc)
 779 {
 780         Point *curr;
 781         WayPoint *wcurr;
 782
 783         /* gc is a pointer to the first GC to use (for plain points).  (gc + 1)
 784          * is a pointer to the GC to use for waypoints, and (gc + 2) is a pointer
 785          * to the GC to use for breaks. */
 786
 787         /* else there is a route to draw. */
 788         for (curr = path->head, wcurr = path->whead; curr++ != path->tail;) {
 789                 /* Draw the line from (curr - 1) to (curr). */
 790                 map_render_segment(gc[0], gc[2],
 791                                    curr[-1].unitx, curr[-1].unity, curr->unitx,
 792                                    curr->unity);
 793
 794                 /* Now, check if curr is a waypoint. */
 795                 if (wcurr && wcurr <= path->wtail && wcurr->point == curr) {
 796                         guint x1 = unit2bufx(wcurr->point->unitx);
 797                         guint y1 = unit2bufy(wcurr->point->unity);
 798                         if ((x1 < BUF_WIDTH_PIXELS)
 799                             && (y1 < BUF_HEIGHT_PIXELS)) {
 800                                 gdk_draw_arc(_map_pixmap, gc[1], FALSE, /* FALSE: not filled. */
 801                                              x1 - _draw_width, y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 802                                              360 * 64);
 803                         }
 804                         wcurr++;
 805                 }
 806         }
 807 }
 808
 809 void
 810 map_render_paths(void)
 811 {
 812 if ((_show_tracks & ROUTES_MASK) && _route.head != _route.tail) {
 813         map_render_path(&_route, _gc + COLORABLE_ROUTE);
 814
 815         /* Now, draw the next waypoint on top of all other waypoints. */
 816         if (_next_way) {
 817                 guint x1 = unit2bufx(_next_way->point->unitx);
 818                 guint y1 = unit2bufy(_next_way->point->unity);
 819
 820                 if ((x1 < BUF_WIDTH_PIXELS) && (y1 < BUF_HEIGHT_PIXELS)) {
 821                         /* Draw the next waypoint as a break. */
 822                         gdk_draw_arc(_map_pixmap, _gc[COLORABLE_ROUTE_BREAK], FALSE,    /* FALSE: not filled. */
 823                              x1 - _draw_width, y1 - _draw_width, 4 * _draw_width, 4 * _draw_width, 0,   /* start at 0 degrees. */
 824                              360 * 64);
 825                 }
 826         }
 827 }
 828 if (_show_tracks & TRACKS_MASK)
 829         map_render_path(&_track, _gc + COLORABLE_TRACK);
 830 }
 831
 832 /**
 833  *
 834  *
 835  */
 836 static gboolean
 837 map_follow_move_cb(GtkWidget *widget, GdkEventMotion *event, gpointer data)
 838 {
 839 GdkModifierType state;
 840 gint xx, yy;
 841 guint unitx, unity;
 842 guint cx, cy;
 843
 844 if (!(event->state & GDK_BUTTON1_MASK))
 845         return FALSE;
 846
 847 if (event->is_hint) {
 848         gdk_window_get_pointer(event->window, &xx, &yy, &state);
 849         state = event->state;
 850 } else {
 851         xx = event->x;
 852         yy = event->y;
 853         state = event->state;
 854 }
 855
 856 unitx = x2unit((gint) (xx - before[0]));
 857 unity = y2unit((gint) (yy - before[1]));
 858 cx = unit2x(_center.unitx);
 859 cy = unit2y(_center.unity);
 860
 861 map_center_unit(x2unit((gint) (cx - (xx - before[0]))), y2unit((gint) (cy - (yy - before[1]))));
 862 map_data_needs_refresh=TRUE;
 863
 864 before[0] = xx;
 865 before[1] = yy;
 866 return FALSE;
 867 }
 868
 869 gboolean
 870 map_key_zoom_timeout(void)
 871 {
 872 if (_key_zoom_new < _zoom) {
 873         /* We're currently zooming in (_zoom is decreasing). */
 874         guint test = _key_zoom_new - _curr_repo->view_zoom_steps;
 875         if (test < MAX_ZOOM)
 876                 _key_zoom_new = test;
 877         else
 878                 return FALSE;
 879 } else {
 880         /* We're currently zooming out (_zoom is increasing). */
 881         guint test = _key_zoom_new + _curr_repo->view_zoom_steps;
 882         if (test < MAX_ZOOM)
 883                 _key_zoom_new = test;
 884         else
 885                 return FALSE;
 886 }
 887
 888 return TRUE;
 889 }
 890
 891 static void
 892 map_information_text(guint x, guint y, GdkGC *gc, gchar *msg)
 893 {
 894 guint width, height;
 895
 896 pango_layout_set_text(speed_layout, msg, -1);
 897 pango_layout_get_pixel_size(speed_layout, &width, &height);
 898 gtk_widget_queue_draw_area(_map_widget, x - 5, y - 5, width * 3 + 15, height + 5);
 899 gdk_window_process_all_updates();
 900 gdk_draw_layout(_map_widget->window, gc, x, y, speed_layout);
 901 }
 902
 903 static void
 904 map_speed_draw(void)
 905 {
 906 GdkGC *gc;
 907 gfloat cur_speed;
 908 gchar *buffer;
 909
 910 cur_speed = _gps->data.speed * UNITS_CONVERT[_units];
 911 gc=(cur_speed > _speed_limit) ? speed_gc1 : speed_gc2;
 912 buffer = g_strdup_printf("%0.0f", cur_speed);
 913 map_information_text(10, 10, gc, buffer);
 914 g_free(buffer);
 915 }
 916
 917 static void
 918 map_scale_draw(GdkEventExpose *event)
 919 {
 920 gchar buffer[16];
 921 gdouble distance;
 922 gdouble lat1, lon1, lat2, lon2;
 923 gint width;
 924
 925 pango_layout_set_text(scale_layout, "0", -1);
 926 pango_layout_get_pixel_size(scale_layout, NULL, &scale_rect.height);
 927 scale_rect.y = _screen_height_pixels - scale_rect.height - 1;
 928
 929 gdk_rectangle_intersect(&event->area, &scale_rect, &event->area);
 930
 931 if (event->area.width && event->area.height) {
 932         gdk_draw_rectangle(_map_widget->window,
 933                            _map_widget->style->bg_gc[GTK_WIDGET_STATE(_map_widget)],
 934                            TRUE, scale_rect.x, scale_rect.y,
 935                            scale_rect.width,
 936                            scale_rect.height);
 937         gdk_draw_rectangle(_map_widget->window,
 938                            _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 939                            FALSE, scale_rect.x, scale_rect.y,
 940                            scale_rect.width,
 941                            scale_rect.height);
 942
 943         /* Now calculate and draw the distance. */
 944         unit2latlon(_center.unitx - pixel2unit(SCALE_WIDTH / 2 - 4), _center.unity, lat1, lon1);
 945         unit2latlon(_center.unitx + pixel2unit(SCALE_WIDTH / 2 - 4), _center.unity, lat2, lon2);
 946         distance=calculate_distance(lat1, lon1, lat2, lon2) * UNITS_CONVERT[_units];
 947
 948         if (distance < 1.f)
 949                 g_snprintf(buffer, sizeof(buffer), "%0.2f %s", distance, UNITS_TEXT[_units]);
 950         else if (distance < 10.f)
 951                 g_snprintf(buffer, sizeof(buffer), "%0.1f %s", distance, UNITS_TEXT[_units]);
 952         else
 953                 g_snprintf(buffer, sizeof(buffer), "%0.f %s", distance, UNITS_TEXT[_units]);
 954
 955         pango_layout_set_text(scale_layout, buffer, -1);
 956         pango_layout_get_pixel_size(scale_layout, &width, NULL);
 957
 958         /* Draw the layout itself. */
 959         gdk_draw_layout(_map_widget->window,
 960                         _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 961                         scale_rect.x + (scale_rect.width - width) / 2,
 962                         scale_rect.y, scale_layout);
 963
 964         /* Draw little hashes on the ends. */
 965         gdk_draw_line(_map_widget->window,
 966                       _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 967                       scale_rect.x + 4,
 968                       scale_rect.y + scale_rect.height / 2 - 4,
 969                       scale_rect.x + 4,
 970                       scale_rect.y + scale_rect.height / 2 + 4);
 971         gdk_draw_line(_map_widget->window,
 972                       _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 973                       scale_rect.x + 4,
 974                       scale_rect.y + scale_rect.height / 2,
 975                       scale_rect.x + (scale_rect.width - width) / 2 - 4,
 976                       scale_rect.y + scale_rect.height / 2);
 977         gdk_draw_line(_map_widget->window,
 978                       _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 979                       scale_rect.x + scale_rect.width - 4,
 980                       scale_rect.y + scale_rect.height / 2 - 4,
 981                       scale_rect.x + scale_rect.width - 4,
 982                       scale_rect.y + scale_rect.height / 2 + 4);
 983         gdk_draw_line(_map_widget->window,
 984                       _map_widget->style->fg_gc[GTK_WIDGET_STATE(_map_widget)],
 985                       scale_rect.x + scale_rect.width - 4,
 986                       scale_rect.y + scale_rect.height / 2,
 987                       scale_rect.x + (scale_rect.width + width) / 2 + 4,
 988                       scale_rect.y + scale_rect.height / 2);
 989         }
 990 }
 991
 992 static gboolean
 993 map_cb_expose(GtkWidget * widget, GdkEventExpose * event)
 994 {
 995 gdk_draw_drawable(GDK_DRAWABLE(_map_widget->window),
 996                 _gc[COLORABLE_MARK],
 997                 _map_pixmap,
 998                 event->area.x + _offsetx, event->area.y + _offsety,
 999                 event->area.x, event->area.y,
1000                 event->area.width, event->area.height);
1001 map_draw_mark(_gps);
1002
1003 /* Draw scale, if necessary. */
1004 if (_show_scale)
1005         map_scale_draw(event);
1006
1007 #if 0
1008 if (_speed_on)
1009         map_speed_draw();
1010 #endif
1011
1012 return TRUE;
1013 }
1014
1015 int
1016 map_zoom(gint zdir)
1017 {
1018 gint nzoom;
1019
1020 nzoom=_zoom+zdir;
1021 if ((nzoom > 0) && (nzoom < MAX_ZOOM - 1)) {
1022         map_set_zoom(nzoom);
1023 }
1024 return nzoom;
1025 }
1026
1027 gboolean
1028 map_zoom_in(void)
1029 {
1030 map_zoom(-1);
1031 return FALSE;
1032 }
1033
1034 gboolean
1035 map_zoom_out(void)
1036 {
1037 map_zoom(1);
1038 return FALSE;
1039 }
1040
1041 static gboolean
1042 map_autozoomer(void)
1043 {
1044 static gfloat z=5.0;
1045 static gint last=5;
1046 gint iz;
1047
1048 if (zoom_timeout_sid==0)
1049         return FALSE;
1050
1051 z=(z+_gps->data.speed+1)/5;
1052 if (z>5) z=5.0; else if (z<1) z=1.0;
1053 iz=(gint)roundf(z);
1054 #ifdef DEBUG
1055 g_printf("Setting autozoom to: %f %d S:%f\n", z, iz, _gps->data.speed);
1056 #endif
1057 if (iz>last)
1058         iz=last+1;
1059 else if (iz<last)
1060         iz=last-1;
1061 last=iz;
1062 map_set_zoom(iz);
1063
1064 return TRUE;
1065 }
1066
1067 void
1068 map_set_autozoom(gboolean az, gfloat speed)
1069 {
1070 if (az==TRUE) {
1071         MACRO_BANNER_SHOW_INFO(_window, "Autozoom enabled");
1072         zoom_timeout_sid=g_timeout_add(speed<5 ? 2000 : 5000, (GSourceFunc) map_autozoomer, NULL);
1073         return;
1074 } else {
1075         if (zoom_timeout_sid) {
1076                 g_source_remove(zoom_timeout_sid);
1077                 zoom_timeout_sid=0;
1078                 MACRO_BANNER_SHOW_INFO(_window, "Autozoom disabled");
1079         }
1080         return;
1081 }
1082
1083 }
1084
1085 static void
1086 map_draw_route(gint x, gint y)
1087 {
1088 cmenu_route_add_way(x, y);
1089 }
1090
1091 static void
1092 map_draw_track(gint x, gint y)
1093 {
1094 _gps->data.unitx=x2unit((gint) (x + 0.5));
1095 _gps->data.unity=y2unit((gint) (y + 0.5));
1096 unit2latlon(_gps->data.unitx, _gps->data.unity, _gps->data.lat, _gps->data.lon);
1097 _gps->data.speed=20.f;
1098 gps_data_integerize(&_gps->data);
1099 track_add(time(NULL), FALSE);
1100 map_refresh_mark();
1101 }
1102
1103 static void
1104 map_set_place_information(osm_way *s, osm_place *mp, osm_place *sp)
1105 {
1106 gchar buffer[256];
1107
1108 if (!s && !mp && !sp) {
1109         g_snprintf(buffer, sizeof(buffer), _("Unknown location"));
1110 } else {
1111         /* oh, fun */
1112         g_snprintf(buffer, sizeof(buffer), "%s%s%s%s%s%s%s%s%s%s",
1113         s ? s->name ? s->name : "" : "",
1114         s ? s->ref ? ", " : "" : "",
1115         s ? s->ref ? s->ref : "" : "",
1116         s ? s->int_ref ? " (" : "" : "",
1117         s ? s->int_ref ? s->int_ref : "" : "",
1118         s ? s->int_ref ? ") " : "" : "",
1119         (sp && sp->name) ? " in " : "",
1120         (sp && sp->name) ? sp->name : "",
1121         (mp && mp->name) ? " in " : "",
1122         (mp && mp->name) ? mp->name : "");
1123 }
1124 gtk_label_set_label(GTK_LABEL(info_banner.location), buffer);
1125 }
1126
1127 static void
1128 map_update_destination(gdouble lat, gdouble lon)
1129 {
1130 gdouble dh=0.0;
1131 gdouble dt, cdist;
1132 static gdouble prev_dt=99999.0;
1133 static gboolean dest_reached=FALSE;
1134 gchar buffer[64];
1135
1136 if (_dest.valid) {
1137         dt=calculate_distance(lat, lon, _dest.lat, _dest.lon);
1138         dh=calculate_course(lat, lon, _dest.lat, _dest.lon);
1139         cdist=dt*UNITS_CONVERT[_units];
1140
1141         g_snprintf(buffer, sizeof(buffer), "%.02f %s (%0.02f)", cdist, UNITS_TEXT[_units], dh<0 ? 360+dh : dh);
1142         gtk_label_set_label(GTK_LABEL(info_banner.distance), buffer);
1143
1144         if (dt<0.005 && dest_reached==FALSE) {
1145                 if (_center_mode>0)
1146                         announce_destination_reached();
1147                 dest_reached=TRUE;
1148         } else if (dt<prev_dt-KM10KNOTS) {
1149                 if (_center_mode>0)
1150                         announce_distance_to_destination(cdist, UNITS_TEXT[_units], KM10KNOTS);
1151                 prev_dt=dt;
1152         } else if (dt>prev_dt+KM10KNOTS/4) {
1153                 prev_dt=dt;
1154         }
1155         if (dt>0.05) {
1156                 dest_reached=FALSE;
1157         }
1158 #if 0
1159         g_printf("%f (Prev:%f)\n", prev_dt, dt);
1160 #endif
1161 } else {
1162         dest_reached=FALSE;
1163         prev_dt=99999.0;
1164         gtk_label_set_label(GTK_LABEL(info_banner.distance), "");
1165 }
1166 gtk_compass_set_dest_heading(_gps_compass, _dest.valid, (gfloat)dh);
1167 gtk_compass_set_dest_heading(_tab_compass, _dest.valid, (gfloat)dh);
1168
1169 if (_next_way && _next_way->point) {
1170         gdouble wp_lat, wp_lon;
1171         gfloat wc;
1172
1173         unit2latlon(_next_way->point->unitx,_next_way->point->unity, wp_lat, wp_lon);
1174         wc=calculate_course(lat, lon, wp_lat, wp_lon);
1175         gtk_compass_set_way_heading(_gps_compass, TRUE, wc);
1176         gtk_compass_set_way_heading(_tab_compass, TRUE, wc);
1177 } else {
1178         gtk_compass_set_way_heading(_gps_compass, FALSE, 0);
1179         gtk_compass_set_way_heading(_tab_compass, FALSE, 0);
1180 }
1181
1182 }
1183
1184 static void
1185 map_update_location(gdouble lat, gdouble lon, gboolean force)
1186 {
1187 gint ilat, ilon;
1188 static gboolean inp=FALSE;
1189
1190 /* We run the gtk mainloop in progress callback so we can be called again, we don't like that */
1191 if (inp==TRUE)
1192         return;
1193 inp=TRUE;
1194
1195 ilat=lat2mp_int(lat);
1196 ilon=lon2mp_int(lon);
1197
1198 if (_gps->data.fix>1 && !force)
1199         osm_set_way_range_from_speed(_gps->data.speed);
1200 else
1201         osm_set_way_range(OSM_RANGE_WAY/4);
1202
1203 osm_progress_set_widget(_db, _progress_item);
1204 osm_get_location_data(ilat, ilon, &map_loc);
1205 if (map_loc.valid)
1206         map_set_place_information(map_loc.street, map_loc.primary, map_loc.secondary);
1207 else
1208         map_set_place_information(NULL, NULL, NULL);
1209 osm_progress_set_widget(_db, NULL);
1210
1211 map_update_destination(lat, lon);
1212
1213 inp=FALSE;
1214 }
1215
1216 /**
1217  * Mouse scroller zoom in/out callback
1218  */
1219 static gboolean
1220 map_cb_scroll_event(GtkWidget * widget, GdkEventScroll * event)
1221 {
1222 if (event->direction == GDK_SCROLL_UP) {
1223         map_center_unit(x2unit((gint) (event->x + 0.5)), y2unit((gint) (event->y + 0.5)));
1224         map_set_zoom(_zoom - 1);
1225 } else if (event->direction == GDK_SCROLL_DOWN) {
1226         map_center_unit(x2unit((gint) (event->x + 0.5)), y2unit((gint) (event->y + 0.5)));
1227         map_set_zoom(_zoom + 1);
1228 }
1229 return FALSE;
1230 }
1231
1232 /**
1233  * Start map drag operation
1234  */
1235 static void
1236 map_drag_start(gint x,gint y)
1237 {
1238 press[0] = x;
1239 press[1] = y;
1240 before[0] = press[0];
1241 before[1] = press[1];
1242 _center_mode=CENTER_MANUAL;
1243 if (map_drag_id!=0)
1244         g_signal_handler_disconnect(G_OBJECT(_map_widget), map_drag_id);
1245
1246 map_drag_id=g_signal_connect(G_OBJECT(_map_widget), "motion_notify_event", G_CALLBACK(map_follow_move_cb), NULL);
1247 }
1248
1249 /**
1250  * Stop map drag operation
1251  */
1252 static void
1253 map_drag_stop(gint x, gint y)
1254 {
1255 if (map_drag_id==0)
1256         return;
1257
1258 g_signal_handler_disconnect(G_OBJECT(_map_widget), map_drag_id);
1259
1260 release[0]=x;
1261 release[1]=y;
1262 press[0]=0;
1263 press[1]=0;
1264 release[0]=0;
1265 release[1]=0;
1266 before[0]=0;
1267 before[1]=0;
1268 map_drag_id=0;
1269 }
1270
1271 /* Workaround hildon content menu problem */
1272 static gboolean
1273 map_cb_show_poi_info_dialog(gpointer data)
1274 {
1275 guint poi_id=GPOINTER_TO_INT(data);
1276 if (poi_info_dialog(poi_id)==FALSE)
1277         g_printerr("Huh? Failed to display info dialog\n");
1278 return FALSE;
1279 }
1280
1281 static gboolean
1282 map_cb_button_press(GtkWidget * widget, GdkEventButton * event)
1283 {
1284 _cmenu_position_x = event->x + 0.5;
1285 _cmenu_position_y = event->y + 0.5;
1286
1287 g_printf("BtnPress\n");
1288 switch (event->button) {
1289 case 1:
1290         if (event->type==GDK_2BUTTON_PRESS) {
1291                 map_center_unit(x2unit((gint) (event->x + 0.5)), y2unit((gint) (event->y + 0.5)));
1292 #ifdef MAP_ZOOM_ON_DOUBLE_CLICK
1293                 map_set_zoom(_zoom-1);
1294 #endif
1295                 map_data_needs_refresh=TRUE;
1296                 return FALSE;
1297         }
1298         if (event->type==GDK_3BUTTON_PRESS) {
1299                 return FALSE;
1300         }
1301
1302         map_drag_start(event->x, event->y);
1303         return FALSE;
1304 break;
1305 case 2:
1306         map_set_zoom(_zoom - 1);
1307 break;
1308 case 3:
1309 #ifndef WITH_HILDON
1310         gtk_menu_popup(GTK_MENU(_menu_map), NULL, NULL, NULL, NULL, event->button, gtk_get_current_event_time());
1311 #endif
1312 break;
1313 }
1314 /* Return FALSE to allow context menu to work. */
1315 return FALSE;
1316 }
1317
1318 static gboolean
1319 map_cb_button_release(GtkWidget *widget, GdkEventButton *event)
1320 {
1321 gdouble lat, lon;
1322 guint poi_id;
1323 gint ux, uy;
1324
1325 g_printf("BtnRelease\n");
1326 switch (event->button) {
1327 case 1:
1328         if (_center_mode>0)
1329                 set_action_activate("autocenter_none", TRUE);
1330
1331         switch (map_mode) {
1332         case MAP_MODE_DRAW_TRACK:
1333                 map_draw_track(event->x, event->y);
1334         break;
1335         case MAP_MODE_DRAW_ROUTE:
1336                 map_draw_route(event->x, event->y);
1337         break;
1338         case MAP_MODE_SET_ROUTE_FROM:
1339         case MAP_MODE_SET_ROUTE_POINT:
1340         case MAP_MODE_SET_ROUTE_TO:
1341         break;
1342         default:
1343                 ux=x2unit(_cmenu_position_x);
1344                 uy=y2unit(_cmenu_position_y);
1345
1346                 unit2latlon(ux, uy, lat, lon);
1347                 if (map_poi_find_at_latlon(lat, lon, &poi_id)==TRUE) {
1348                         g_printf("POI: %d\n", poi_id);
1349                         g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_cb_show_poi_info_dialog, GINT_TO_POINTER(poi_id), NULL);
1350                 }
1351                 if (map_data_needs_refresh==TRUE) {
1352                         map_data_needs_refresh=FALSE;
1353                         map_render_data();
1354                         g_idle_add_full(G_PRIORITY_HIGH_IDLE,(GSourceFunc)map_update_location_from_center, NULL, NULL);
1355                 }
1356                 map_drag_stop(event->x, event->y);
1357         break;
1358         }
1359 break;
1360 case 2:
1361         /* */
1362 break;
1363 case 3:
1364 break;
1365 }
1366
1367 /* Return FALSE to avoid context menu (if it hasn't popped up already). */
1368 return FALSE;
1369 }
1370
1371 gboolean
1372 map_dialog_goto_latlon(void)
1373 {
1374 GtkWidget *dialog;
1375 GtkWidget *table;
1376 GtkWidget *label;
1377 GtkWidget *txt_lat;
1378 GtkWidget *txt_lon;
1379
1380 dialog = gtk_dialog_new_with_buttons(_("Go to Lat/Lon"),
1381                      GTK_WINDOW(_window),
1382                      GTK_DIALOG_MODAL, GTK_STOCK_OK,
1383                      GTK_RESPONSE_ACCEPT,
1384                      GTK_STOCK_CANCEL,
1385                      GTK_RESPONSE_REJECT, NULL);
1386
1387 gtk_box_pack_start(GTK_BOX(GTK_DIALOG(dialog)->vbox), table = gtk_table_new(2, 3, FALSE), TRUE, TRUE, 0);
1388
1389 gtk_table_attach(GTK_TABLE(table), label = gtk_label_new(_("Latitude")),0, 1, 0, 1, GTK_FILL, 0, 2, 4);
1390 gtk_misc_set_alignment(GTK_MISC(label), 1.f, 0.5f);
1391
1392 gtk_table_attach(GTK_TABLE(table), txt_lat = gtk_entry_new(), 1, 2, 0, 1, GTK_FILL, 0, 2, 4);
1393 gtk_misc_set_alignment(GTK_MISC(label), 0.0f, 0.5f);
1394
1395 gtk_table_attach(GTK_TABLE(table), label = gtk_label_new(_("Longitude")), 0, 1, 1, 2, GTK_FILL, 0, 2, 4);
1396 gtk_misc_set_alignment(GTK_MISC(label), 1.f, 0.5f);
1397
1398 gtk_table_attach(GTK_TABLE(table), txt_lon = gtk_entry_new(), 1, 2, 1, 2, GTK_FILL, 0, 2, 4);
1399 gtk_misc_set_alignment(GTK_MISC(label), 0.0f, 0.5f);
1400
1401 #if defined (WITH_DEVICE_770) && !defined(WITH_HILDON_NEW)
1402 g_object_set(G_OBJECT(txt_lat), HILDON_INPUT_MODE_HINT, HILDON_INPUT_MODE_HINT_NUMERICSPECIAL, NULL);
1403 g_object_set(G_OBJECT(txt_lon), HILDON_INPUT_MODE_HINT, HILDON_INPUT_MODE_HINT_NUMERICSPECIAL, NULL);
1404 #endif
1405
1406 /* Initialize with the current center position. */
1407 {
1408         gchar buffer[32];
1409         gdouble lat, lon;
1410         unit2latlon(_center.unitx, _center.unity, lat, lon);
1411         g_snprintf(buffer, sizeof(buffer), "%.06f", lat);
1412         gtk_label_set_text(GTK_LABEL(txt_lat), buffer);
1413         g_snprintf(buffer, sizeof(buffer), "%.06f", lon);
1414         gtk_label_set_text(GTK_LABEL(txt_lon), buffer);
1415 }
1416
1417 gtk_widget_show_all(dialog);
1418
1419 while (GTK_RESPONSE_ACCEPT == gtk_dialog_run(GTK_DIALOG(dialog))) {
1420         const gchar *text;
1421         gchar *error_check;
1422         gdouble lat, lon;
1423         guint unitx, unity;
1424
1425         text = gtk_entry_get_text(GTK_ENTRY(txt_lat));
1426         lat = strtof(text, &error_check);
1427         if (text == error_check || lat < -90.f || lat > 90.f) {
1428                 popup_error(dialog, _("Invalid Latitude"));
1429                 continue;
1430         }
1431
1432         text = gtk_entry_get_text(GTK_ENTRY(txt_lon));
1433         lon = strtof(text, &error_check);
1434         if (text == error_check || lon < -180.f || lon > 180.f) {
1435                 popup_error(dialog, _("Invalid Longitude"));
1436                 continue;
1437         }
1438
1439         latlon2unit(lat, lon, unitx, unity);
1440         if (_center_mode > 0)
1441                 set_action_activate("autocenter_none", TRUE);
1442
1443         map_center_unit(unitx, unity);
1444         break;
1445 }
1446 gtk_widget_destroy(dialog);
1447 return TRUE;
1448 }
1449