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