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

   1 #include <config.h>
   2
   3 #define _GNU_SOURCE
   4
   5 #include <unistd.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <strings.h>
   9 #include <stddef.h>
  10 #include <locale.h>
  11 #include <math.h>
  12 #include <errno.h>
  13 #include <sys/wait.h>
  14 #include <glib/gstdio.h>
  15 #include <gtk/gtk.h>
  16 #include <fcntl.h>
  17 #include <libgnomevfs/gnome-vfs.h>
  18 #include <gconf/gconf-client.h>
  19 #include <libxml/parser.h>
  20 #include <curl/multi.h>
  21 #include <libintl.h>
  22 #include <locale.h>
  23 #include <sqlite3.h>
  24
  25 #include "hildon-mapper.h"
  26
  27 #include "utils.h"
  28 #include "map.h"
  29 #include "osm.h"
  30 #include "db.h"
  31 #include "osm-db.h"
  32 #include "poi.h"
  33 #include "route.h"
  34 #include "track.h"
  35 #include "gps.h"
  36 #include "bt.h"
  37 #include "mapper-types.h"
  38 #include "ui-common.h"
  39 #include "settings.h"
  40 #include "latlon.h"
  41 #include "gpx.h"
  42 #include "map-download.h"
  43
  44 Point _min_center = { -1, -1 };
  45 Point _max_center = { -1, -1 };
  46 Point _focus = { -1, -1 };
  47
  48 /** The "base tile" is the upper-left tile in the pixmap. */
  49 guint _base_tilex = -5;
  50 guint _base_tiley = -5;
  51
  52 guint _zoom = 3;                /* zoom level, from 0 to MAX_ZOOM. */
  53 Point _center = { -1, -1 };     /* current center location, X. */
  54
  55 CenterMode _center_mode = CENTER_LEAD;
  56
  57 static guint press[2] = { 0, 0 };
  58 static guint release[2] = { 0, 0 };
  59 static guint before[2] = { 0, 0 };
  60 static guint _id = 0;
  61
  62 /** VARIABLES FOR ACCESSING THE LOCATION/BOUNDS OF THE CURRENT MARK. */
  63 static gint _mark_x1;
  64 static gint _mark_x2;
  65 static gint _mark_y1;
  66 static gint _mark_y2;
  67 static gint _mark_minx;
  68 static gint _mark_miny;
  69 static gint _mark_width;
  70 static gint _mark_height;
  71
  72 static gint zoom_timeout_sid=0;
  73 static gint map_mode=0;
  74
  75 static osm_location map_loc = {NULL, NULL, NULL, FALSE, FALSE, 0, 0, 0.0, 0.0, 0 };
  76
  77 typedef struct _map_tile_rdata map_tile_rdata;
  78 struct _map_tile_rdata {
  79         guint tilex, tiley, zoom;
  80         guint destx, desty;
  81 };
  82
  83 void map_render_paths();
  84 void map_force_redraw();
  85 static void map_update_location(gint x, gint y, gboolean force);
  86 void map_draw_position_icon(Position *pos);
  87
  88 gboolean
  89 map_cb_configure(GtkWidget * widget, GdkEventConfigure * event)
  90 {
  91 _screen_width_pixels = _map_widget->allocation.width;
  92 _screen_height_pixels = _map_widget->allocation.height;
  93 _screen_grids_halfwidth = pixel2grid(_screen_width_pixels) / 2;
  94 _screen_grids_halfheight = pixel2grid(_screen_height_pixels) / 2;
  95
  96 /* Set _scale_rect. */
  97 _scale_rect.x = (_screen_width_pixels - SCALE_WIDTH) / 2;
  98 _scale_rect.width = SCALE_WIDTH;
  99 pango_layout_set_text(_scale_layout, "0", -1);
 100 pango_layout_get_pixel_size(_scale_layout, NULL, &_scale_rect.height);
 101 _scale_rect.y = _screen_height_pixels - _scale_rect.height - 1;
 102
 103 MACRO_RECALC_FOCUS_BASE();
 104 MACRO_RECALC_FOCUS_SIZE();
 105
 106 _min_center.unitx = pixel2unit(grid2pixel(_screen_grids_halfwidth));
 107 _min_center.unity = pixel2unit(grid2pixel(_screen_grids_halfheight));
 108 _max_center.unitx = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfwidth) - 1;
 109 _max_center.unity = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfheight) - 1;
 110
 111 map_center_unit(_center.unitx, _center.unity);
 112
 113 return TRUE;
 114 }
 115
 116 /**
 117  * Draw the current mark (representing the current GPS location) onto
 118  * _map_widget.  This method does not queue the draw area.
 119  */
 120 static void
 121 map_draw_mark()
 122 {
 123 gdk_draw_arc(_map_widget->window, _conn_state == RCVR_FIXED ? _gc[COLORABLE_MARK] : _gc[COLORABLE_MARK_OLD], FALSE,
 124      _mark_x1 - _draw_width, _mark_y1 - _draw_width,
 125         2 * _draw_width, 2 * _draw_width, 0, 360 * 64);
 126 gdk_draw_line(_map_widget->window,
 127       _conn_state == RCVR_FIXED ? (_show_velvec ? _gc[COLORABLE_MARK_VELOCITY] : _gc[COLORABLE_MARK]) : _gc[COLORABLE_MARK_OLD],
 128       _mark_x1, _mark_y1, _mark_x2, _mark_y2);
 129 }
 130
 131 /**
 132  * "Set" the mark, which translates the current GPS position into on-screen
 133  * units in preparation for drawing the mark with map_draw_mark().
 134  */
 135 void
 136 map_set_mark(void)
 137 {
 138 _mark_x1 = unit2x(_pos.unitx);
 139 _mark_y1 = unit2y(_pos.unity);
 140 _mark_x2 = _mark_x1 + (_show_velvec ? _gps.vel_offsetx : 0);
 141 _mark_y2 = _mark_y1 + (_show_velvec ? _gps.vel_offsety : 0);
 142 _mark_minx = MIN(_mark_x1, _mark_x2) - (2 * _draw_width);
 143 _mark_miny = MIN(_mark_y1, _mark_y2) - (2 * _draw_width);
 144 _mark_width = abs(_mark_x1 - _mark_x2) + (4 * _draw_width);
 145 _mark_height = abs(_mark_y1 - _mark_y2) + (4 * _draw_width);
 146 }
 147
 148 /**
 149  * Do an in-place scaling of a pixbuf's pixels at the given ratio from the
 150  * given source location.  It would have been nice if gdk_pixbuf provided
 151  * this method, but I guess it's not general-purpose enough.
 152  */
 153 static void
 154 map_pixbuf_scale_inplace(GdkPixbuf * pixbuf, guint ratio_p2, guint src_x, guint src_y)
 155 {
 156         guint dest_x = 0, dest_y = 0, dest_dim = TILE_SIZE_PIXELS;
 157         guint rowstride = gdk_pixbuf_get_rowstride(pixbuf);
 158         guint n_channels = gdk_pixbuf_get_n_channels(pixbuf);
 159         guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 160
 161         /* Sweep through the entire dest area, copying as necessary, but
 162          * DO NOT OVERWRITE THE SOURCE AREA.  We'll copy it afterward. */
 163         do {
 164                 guint src_dim = dest_dim >> ratio_p2;
 165                 guint src_endx = src_x - dest_x + src_dim;
 166                 gint x, y;
 167
 168                 for (y = dest_dim - 1; y >= 0; y--) {
 169                         guint src_offset_y, dest_offset_y;
 170
 171                         src_offset_y = (src_y + (y >> ratio_p2)) * rowstride;
 172                         dest_offset_y = (dest_y + y) * rowstride;
 173                         x = dest_dim - 1;
 174
 175                         if ((unsigned)(dest_y + y - src_y) < src_dim && (unsigned)(dest_x + x - src_x) < src_dim)
 176                                 x -= src_dim;
 177
 178                         for (; x >= 0; x--) {
 179                                 guint src_offset, dest_offset, i;
 180
 181                                 src_offset = src_offset_y + (src_x + (x >> ratio_p2)) * n_channels;
 182                                 dest_offset = dest_offset_y + (dest_x + x) * n_channels;
 183
 184                                 pixels[dest_offset] = pixels[src_offset];
 185                                 for (i = n_channels - 1; i; i--)
 186                                         pixels[dest_offset + i] = pixels[src_offset + i];
 187
 188                                 if ((unsigned)(dest_y + y - src_y) < src_dim && x == src_endx)
 189                                         x -= src_dim;
 190                         }
 191                 }
 192                 /* Reuse src_dim and src_endx to store new src_x and src_y. */
 193                 src_dim = src_x + ((src_x - dest_x) >> ratio_p2);
 194                 src_endx = src_y + ((src_y - dest_y) >> ratio_p2);
 195                 dest_x = src_x;
 196                 dest_y = src_y;
 197                 src_x = src_dim;
 198                 src_y = src_endx;
 199         }
 200         while ((dest_dim >>= ratio_p2) > 1);
 201 }
 202
 203 /**
 204  * Trim pixbufs that are bigger than tiles. (Those pixbufs result, when
 205  * captions should be cut off.)
 206  */
 207 static GdkPixbuf *
 208 pixbuf_trim(GdkPixbuf * pixbuf)
 209 {
 210 GdkPixbuf *mpixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, gdk_pixbuf_get_has_alpha(pixbuf),
 211                    8, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 212
 213 gdk_pixbuf_copy_area(pixbuf,
 214                      (gdk_pixbuf_get_width(pixbuf) - TILE_SIZE_PIXELS) / 2,
 215                      (gdk_pixbuf_get_height(pixbuf) - TILE_SIZE_PIXELS) / 2,
 216                      TILE_SIZE_PIXELS,
 217                      TILE_SIZE_PIXELS, mpixbuf, 0, 0);
 218
 219 g_object_unref(pixbuf);
 220 return mpixbuf;
 221 }
 222
 223 void
 224 map_render_tile(guint tilex, guint tiley, guint destx, guint desty, gboolean fast_fail)
 225 {
 226 GdkPixbuf *pixbuf = NULL;
 227 gchar buffer[BUFFER_SIZE];
 228 GError *error = NULL;
 229 gint zoff;
 230
 231 if (tilex < _world_size_tiles && tiley < _world_size_tiles) {
 232         /* The tile is possible. */
 233         for (zoff = (_curr_repo->double_size ? 1 : 0);
 234              !pixbuf && (_zoom + zoff) <= MAX_ZOOM
 235              && zoff <= TILE_SIZE_P2; zoff += 1) {
 236                 snprintf(buffer, sizeof(buffer), "%s/%u/%u/%u.jpg",
 237                          _curr_repo->cache_dir, _zoom + zoff,
 238                          (tilex >> zoff), (tiley >> zoff));
 239
 240                 pixbuf = gdk_pixbuf_new_from_file(buffer, &error);
 241                 if (error || !pixbuf) {
 242                         /* Delete so we try again some other day. */
 243                         g_unlink(buffer);
 244                         pixbuf = NULL;
 245                         error = NULL;
 246
 247                         /* Download, if we should. */
 248                         if (_auto_download && _curr_repo->type != REPOTYPE_NONE &&
 249                             !((_zoom + zoff - (_curr_repo->double_size ? 1 : 0)) % _curr_repo->dl_zoom_steps)) {
 250                                 if (!fast_fail)
 251                                         map_initiate_download(tilex >> zoff,
 252                                                               tiley >> zoff,
 253                                                               _zoom + zoff,
 254                                                               -INITIAL_DOWNLOAD_RETRIES);
 255                                 fast_fail = TRUE;
 256                         }
 257                 } else {
 258                         /* Check if we need to trim. */
 259                         if (gdk_pixbuf_get_width(pixbuf) != TILE_SIZE_PIXELS || gdk_pixbuf_get_height(pixbuf) != TILE_SIZE_PIXELS)
 260                                 pixbuf = pixbuf_trim(pixbuf);
 261
 262                         /* Check if we need to blit. */
 263                         if (zoff) {
 264                                 map_pixbuf_scale_inplace(pixbuf, zoff,
 265                                                  (tilex - ((tilex >> zoff) << zoff)) << (TILE_SIZE_P2 - zoff),
 266                                                  (tiley - ((tiley >> zoff) << zoff)) << (TILE_SIZE_P2 - zoff));
 267                         }
 268                 }
 269         }
 270 }
 271
 272 if (pixbuf) {
 273         gdk_draw_pixbuf(_map_pixmap,
 274                         _gc[COLORABLE_MARK],
 275                         pixbuf, 0, 0, destx, desty,
 276                         TILE_SIZE_PIXELS, TILE_SIZE_PIXELS,
 277                         GDK_RGB_DITHER_NONE, 0, 0);
 278         g_object_unref(pixbuf);
 279 } else {
 280         gdk_draw_rectangle(_map_pixmap, _map_widget->style->black_gc,
 281                            TRUE, destx, desty, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 282 }
 283 }
 284
 285 gboolean
 286 map_render_tile_idle(map_tile_rdata *mtr)
 287 {
 288 map_render_tile(mtr->tilex, mtr->tiley, mtr->destx, mtr->desty, FALSE);
 289 gtk_widget_queue_draw_area(_map_widget, mtr->destx, mtr->desty, TILE_SIZE_PIXELS, TILE_SIZE_PIXELS);
 290
 291 g_slice_free(map_tile_rdata, mtr);
 292 return FALSE;
 293 }
 294
 295 void
 296 map_render_data(void)
 297 {
 298 if(_show_poi)
 299         map_render_poi();
 300 if(_show_tracks > 0)
 301         map_render_paths();
 302 if (_home.valid)
 303         map_draw_position_icon(&_home);
 304 }
 305
 306 /**
 307  * Force a redraw of the entire _map_pixmap, including fetching the
 308  * background maps from disk and redrawing the tracks on top of them.
 309  */
 310 void
 311 map_force_redraw()
 312 {
 313 guint new_x, new_y;
 314
 315 for (new_y = 0; new_y < BUF_HEIGHT_TILES; ++new_y)
 316         for (new_x = 0; new_x < BUF_WIDTH_TILES; ++new_x) {
 317                 map_render_tile(_base_tilex + new_x,
 318                                 _base_tiley + new_y,
 319                                 new_x * TILE_SIZE_PIXELS,
 320                                 new_y * TILE_SIZE_PIXELS, FALSE);
 321         }
 322 map_render_data();
 323 MACRO_QUEUE_DRAW_AREA();
 324 }
 325
 326 /**
 327  * Set the current zoom level.  If the given zoom level is the same as the
 328  * current zoom level, or if the new zoom is invalid
 329  * (not MIN_ZOOM <= new_zoom < MAX_ZOOM), then this method does nothing.
 330  */
 331 void
 332 map_set_zoom(guint new_zoom)
 333 {
 334 /* Note that, since new_zoom is a guint and MIN_ZOOM is 0, this if
 335  * condition also checks for new_zoom >= MIN_ZOOM. */
 336 if (new_zoom > (MAX_ZOOM - 1))
 337         return;
 338 if (new_zoom == _zoom)
 339         return;
 340
 341 _zoom = new_zoom / _curr_repo->view_zoom_steps * _curr_repo->view_zoom_steps;
 342 _world_size_tiles = unit2tile(WORLD_SIZE_UNITS);
 343
 344 /* If we're leading, update the center to reflect new zoom level. */
 345 MACRO_RECALC_CENTER(_center.unitx, _center.unity);
 346
 347 /* Update center bounds to reflect new zoom level. */
 348 _min_center.unitx = pixel2unit(grid2pixel(_screen_grids_halfwidth));
 349 _min_center.unity = pixel2unit(grid2pixel(_screen_grids_halfheight));
 350 _max_center.unitx = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfwidth) - 1;
 351 _max_center.unity = WORLD_SIZE_UNITS - grid2unit(_screen_grids_halfheight) - 1;
 352
 353 BOUND(_center.unitx, _min_center.unitx, _max_center.unitx);
 354 BOUND(_center.unity, _min_center.unity, _max_center.unity);
 355
 356 _base_tilex = grid2tile((gint) pixel2grid((gint) unit2pixel((gint) _center.unitx))
 357                         - (gint) _screen_grids_halfwidth);
 358 _base_tiley = grid2tile(pixel2grid(unit2pixel(_center.unity))
 359                         - _screen_grids_halfheight);
 360
 361 /* New zoom level, so we can't reuse the old buffer's pixels. */
 362 /* Update state variables. */
 363 MACRO_RECALC_OFFSET();
 364 MACRO_RECALC_FOCUS_BASE();
 365 MACRO_RECALC_FOCUS_SIZE();
 366
 367 map_set_mark();
 368 map_force_redraw();
 369 }
 370
 371 /**
 372  * Center the view on the given unitx/unity.
 373  */
 374 void
 375 map_center_unit(guint new_center_unitx, guint new_center_unity)
 376 {
 377 gint new_base_tilex, new_base_tiley;
 378 guint new_x, new_y;
 379 guint j, k, base_new_x, base_old_x, old_x, old_y, iox, ioy;
 380
 381 /* Assure that _center.unitx/y are bounded. */
 382 BOUND(new_center_unitx, _min_center.unitx, _max_center.unitx);
 383 BOUND(new_center_unity, _min_center.unity, _max_center.unity);
 384
 385 _center.unitx = new_center_unitx;
 386 _center.unity = new_center_unity;
 387
 388 new_base_tilex = grid2tile((gint) pixel2grid((gint)unit2pixel((gint) _center.unitx))
 389                            - (gint)_screen_grids_halfwidth);
 390 new_base_tiley = grid2tile(pixel2grid(unit2pixel(_center.unity))
 391                            - _screen_grids_halfheight);
 392
 393 /* Same zoom level, so it's likely that we can reuse some of the old
 394  * buffer's pixels. */
 395
 396 if (new_base_tilex != _base_tilex || new_base_tiley != _base_tiley) {
 397         /* If copying from old parts to new parts, we need to make sure we
 398          * don't overwrite the old parts when copying, so set up new_x,
 399          * new_y, old_x, old_y, iox, and ioy with that in mind. */
 400         if (new_base_tiley < _base_tiley) {
 401                 /* New is lower than old - start at bottom and go up. */
 402                 new_y = BUF_HEIGHT_TILES - 1;
 403                 ioy = -1;
 404         } else {
 405                 /* New is higher than old - start at top and go down. */
 406                 new_y = 0;
 407                 ioy = 1;
 408         }
 409         if (new_base_tilex < _base_tilex) {
 410                 /* New is righter than old - start at right and go left. */
 411                 base_new_x = BUF_WIDTH_TILES - 1;
 412                 iox = -1;
 413         } else {
 414                 /* New is lefter than old - start at left and go right. */
 415                 base_new_x = 0;
 416                 iox = 1;
 417         }
 418
 419         /* Iterate over the y tile values. */
 420         old_y = new_y + new_base_tiley - _base_tiley;
 421         base_old_x = base_new_x + new_base_tilex - _base_tilex;
 422         _base_tilex = new_base_tilex;
 423         _base_tiley = new_base_tiley;
 424         for (j = 0; j < BUF_HEIGHT_TILES; ++j, new_y += ioy, old_y += ioy) {
 425                 new_x = base_new_x;
 426                 old_x = base_old_x;
 427                 /* Iterate over the x tile values. */
 428                 for (k = 0; k < BUF_WIDTH_TILES;
 429                      ++k, new_x += iox, old_x += iox) {
 430                         /* Can we get this grid block from the old buffer?. */
 431                         if (old_x >= 0 && old_x < BUF_WIDTH_TILES
 432                             && old_y >= 0 && old_y < BUF_HEIGHT_TILES) {
 433                                 /* Copy from old buffer to new buffer. */
 434                                 gdk_draw_drawable(_map_pixmap,
 435                                                   _gc[COLORABLE_MARK],
 436                                                   _map_pixmap,
 437                                                   old_x * TILE_SIZE_PIXELS,
 438                                                   old_y * TILE_SIZE_PIXELS,
 439                                                   new_x * TILE_SIZE_PIXELS,
 440                                                   new_y * TILE_SIZE_PIXELS,
 441                                                   TILE_SIZE_PIXELS,
 442                                                   TILE_SIZE_PIXELS);
 443                         } else {
 444                                 map_render_tile(new_base_tilex + new_x,
 445                                                 new_base_tiley + new_y,
 446                                                 new_x * TILE_SIZE_PIXELS,
 447                                                 new_y * TILE_SIZE_PIXELS,
 448                                                 FALSE);
 449                         }
 450                 }
 451         }
 452         map_render_data();
 453 }
 454
 455 MACRO_RECALC_OFFSET();
 456 MACRO_RECALC_FOCUS_BASE();
 457
 458 map_set_mark();
 459 MACRO_QUEUE_DRAW_AREA();
 460 }
 461
 462 /**
 463  * Pan the view by the given number of units in the X and Y directions.
 464  */
 465 void
 466 map_pan(gint delta_unitx, gint delta_unity)
 467 {
 468 if (_center_mode > 0)
 469         set_action_activate("autocenter_none", TRUE);
 470
 471 map_center_unit(_center.unitx + delta_unitx, _center.unity + delta_unity);
 472 }
 473
 474 /**
 475  * Initiate a move of the mark from the old location to the current
 476  * location.  This function queues the draw area of the old mark (to force
 477  * drawing of the background map), then updates the mark, then queus the
 478  * draw area of the new mark.
 479  */
 480 void
 481 map_move_mark(void)
 482 {
 483 /* Just queue the old and new draw areas. */
 484 gtk_widget_queue_draw_area(_map_widget,
 485                    _mark_minx<0 ? 0 : _mark_minx,
 486                    _mark_miny<0 ? 0 : _mark_miny,
 487                    _mark_width, _mark_height);
 488 map_set_mark();
 489 gtk_widget_queue_draw_area(_map_widget,
 490                    _mark_minx<0 ? 0 : _mark_minx,
 491                    _mark_miny<0 ? 0 : _mark_miny,
 492                    _mark_width, _mark_height);
 493 }
 494
 495 gboolean
 496 map_update_location_from_gps()
 497 {
 498 map_update_location(_pos.unitx, _pos.unity, FALSE);
 499 return FALSE;
 500 }
 501
 502 gboolean
 503 map_update_location_from_center()
 504 {
 505 /* Force re-validation of place if user is clicking around */
 506 map_loc.valid=FALSE;
 507 map_update_location(_center.unitx, _center.unity, TRUE);
 508 return FALSE;
 509 }
 510
 511 /**
 512  * Draw given pixbuf on map, centered on x,y
 513  */
 514 void
 515 map_draw_pixbuf(guint unitx, guint unity, GdkPixbuf *p)
 516 {
 517 gint x,y;
 518 x = unit2bufx(unitx);
 519 y = unit2bufy(unity);
 520
 521 gdk_draw_pixbuf(_map_pixmap, _gc[COLORABLE_POI],
 522         p, 0, 0,
 523         x - gdk_pixbuf_get_width(p) / 2,
 524         y - gdk_pixbuf_get_height(p) / 2,
 525         -1, -1, GDK_RGB_DITHER_NONE, 0, 0);
 526 }
 527
 528 /**
 529  * Draw an icon on given Position.
 530  *
 531  * XXX: don't hardcode as home.png !
 532  */
 533 void
 534 map_draw_position_icon(Position *pos)
 535 {
 536 guint x,y;
 537 GdkPixbuf *p;
 538
 539 latlon2unit(pos->lat, pos->lon, x, y);
 540 p=gdk_pixbuf_new_from_file(DATADIR "/pixmaps/mapper/home.png", NULL);
 541 if (p) {
 542         map_draw_pixbuf(x,y,p);
 543         g_object_unref(p);
 544 }
 545
 546 }
 547
 548 /**
 549  * Make sure the mark is up-to-date.  This function triggers a panning of
 550  * the view if the mark is appropriately close to the edge of the view.
 551  */
 552 void
 553 map_refresh_mark()
 554 {
 555 guint new_center_unitx;
 556 guint new_center_unity;
 557
 558 MACRO_RECALC_CENTER(new_center_unitx, new_center_unity);
 559
 560 if ((new_center_unitx - _focus.unitx) < _focus_unitwidth
 561     && (new_center_unity - _focus.unity) < _focus_unitheight)
 562         /* We're not changing the view - just move the mark. */
 563         map_move_mark();
 564 else
 565         map_center_unit(new_center_unitx, new_center_unity);
 566
 567 /* Draw speed info */
 568 if (_speed_limit_on)
 569         speed_limit();
 570
 571 if (_center_mode>0)
 572         g_idle_add((GSourceFunc)map_update_location_from_gps, NULL);
 573 }
 574
 575 /**
 576  * Render a single track line to _map_pixmap.  If either point on the line
 577  * is a break (defined as unity == 0), a circle is drawn at the other point.
 578  * IT IS AN ERROR FOR BOTH POINTS TO INDICATE A BREAK.
 579  */
 580 void
 581 map_render_segment(GdkGC * gc_norm, GdkGC * gc_alt,
 582                    guint unitx1, guint unity1, guint unitx2, guint unity2)
 583 {
 584         vprintf("%s()\n", __PRETTY_FUNCTION__);
 585
 586         if (!unity1) {
 587                 guint x2, y2;
 588                 x2 = unit2bufx(unitx2);
 589                 y2 = unit2bufy(unity2);
 590                 /* Make sure this circle will be visible. */
 591                 if ((x2 < BUF_WIDTH_PIXELS)
 592                     && (y2 < BUF_HEIGHT_PIXELS))
 593                         gdk_draw_arc(_map_pixmap, gc_alt, FALSE,        /* FALSE: not filled. */
 594                                      x2 - _draw_width, y2 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 595                                      360 * 64);
 596         } else if (!unity2) {
 597                 guint x1, y1;
 598                 x1 = unit2bufx(unitx1);
 599                 y1 = unit2bufy(unity1);
 600                 /* Make sure this circle will be visible. */
 601                 if ((x1 < BUF_WIDTH_PIXELS)
 602                     && ((unsigned)y1 < BUF_HEIGHT_PIXELS))
 603                         gdk_draw_arc(_map_pixmap, gc_alt, FALSE,        /* FALSE: not filled. */
 604                                      x1 - _draw_width, y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 605                                      360 * 64);
 606         } else {
 607                 gint x1, y1, x2, y2;
 608                 x1 = unit2bufx(unitx1);
 609                 y1 = unit2bufy(unity1);
 610                 x2 = unit2bufx(unitx2);
 611                 y2 = unit2bufy(unity2);
 612                 /* Make sure this line could possibly be visible. */
 613                 if (!((x1 > BUF_WIDTH_PIXELS && x2 > BUF_WIDTH_PIXELS)
 614                       || (x1 < 0 && x2 < 0)
 615                       || (y1 > BUF_HEIGHT_PIXELS && y2 > BUF_HEIGHT_PIXELS)
 616                       || (y1 < 0 && y2 < 0)))
 617                         gdk_draw_line(_map_pixmap, gc_norm, x1, y1, x2, y2);
 618         }
 619
 620         vprintf("%s(): return\n", __PRETTY_FUNCTION__);
 621 }
 622
 623 /**
 624  * Render all track data onto the _map_pixmap.  Note that this does not
 625  * clear the pixmap of previous track data (use map_force_redraw() for
 626  * that), and also note that this method does not queue any redraws, so it
 627  * is up to the caller to decide which part of the track really needs to be
 628  * redrawn.
 629  */
 630 void
 631 map_render_path(Path * path, GdkGC ** gc)
 632 {
 633         Point *curr;
 634         WayPoint *wcurr;
 635         printf("%s()\n", __PRETTY_FUNCTION__);
 636
 637         /* gc is a pointer to the first GC to use (for plain points).  (gc + 1)
 638          * is a pointer to the GC to use for waypoints, and (gc + 2) is a pointer
 639          * to the GC to use for breaks. */
 640
 641         /* else there is a route to draw. */
 642         for (curr = path->head, wcurr = path->whead; curr++ != path->tail;) {
 643                 /* Draw the line from (curr - 1) to (curr). */
 644                 map_render_segment(gc[0], gc[2],
 645                                    curr[-1].unitx, curr[-1].unity, curr->unitx,
 646                                    curr->unity);
 647
 648                 /* Now, check if curr is a waypoint. */
 649                 if (wcurr && wcurr <= path->wtail && wcurr->point == curr) {
 650                         guint x1 = unit2bufx(wcurr->point->unitx);
 651                         guint y1 = unit2bufy(wcurr->point->unity);
 652                         if ((x1 < BUF_WIDTH_PIXELS)
 653                             && (y1 < BUF_HEIGHT_PIXELS)) {
 654                                 gdk_draw_arc(_map_pixmap, gc[1], FALSE, /* FALSE: not filled. */
 655                                              x1 - _draw_width, y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 656                                              360 * 64);
 657                         }
 658                         wcurr++;
 659                 }
 660         }
 661
 662         vprintf("%s(): return\n", __PRETTY_FUNCTION__);
 663 }
 664
 665 void
 666 map_render_paths()
 667 {
 668         printf("%s()\n", __PRETTY_FUNCTION__);
 669
 670         if ((_show_tracks & ROUTES_MASK) && _route.head != _route.tail) {
 671                 map_render_path(&_route, _gc + COLORABLE_ROUTE);
 672
 673                 /* Now, draw the next waypoint on top of all other waypoints. */
 674                 if (_next_way) {
 675                         guint x1 = unit2bufx(_next_way->point->unitx);
 676                         guint y1 = unit2bufy(_next_way->point->unity);
 677                         if ((x1 < BUF_WIDTH_PIXELS)
 678                             && (y1 < BUF_HEIGHT_PIXELS)) {
 679                                 /* Draw the next waypoint as a break. */
 680                                 gdk_draw_arc(_map_pixmap, _gc[COLORABLE_ROUTE_BREAK], FALSE,    /* FALSE: not filled. */
 681                                              x1 - _draw_width, y1 - _draw_width, 2 * _draw_width, 2 * _draw_width, 0,   /* start at 0 degrees. */
 682                                              360 * 64);
 683                         }
 684                 }
 685         }
 686         if (_show_tracks & TRACKS_MASK)
 687                 map_render_path(&_track, _gc + COLORABLE_TRACK);
 688
 689         vprintf("%s(): return\n", __PRETTY_FUNCTION__);
 690 }
 691
 692 static
 693 gboolean map_follow_move(GtkWidget * widget, GdkEventMotion * event)
 694 {
 695         gint xx, yy;
 696         GdkModifierType state;
 697         guint unitx, unity;
 698         guint cx, cy;
 699
 700         if (event->is_hint) {
 701                 gdk_window_get_pointer(event->window, &xx, &yy, &state);
 702                 state = event->state;
 703         } else {
 704                 xx = event->x;
 705                 yy = event->y;
 706                 state = event->state;
 707         }
 708
 709         unitx = x2unit((gint) (xx - before[0]));
 710         unity = y2unit((gint) (yy - before[1]));
 711         cx = unit2x(_center.unitx);
 712         cy = unit2y(_center.unity);
 713
 714         map_center_unit(x2unit((gint) (cx - (xx - before[0]))),
 715                         y2unit((gint) (cy - (yy - before[1]))));
 716
 717         before[0] = xx;
 718         before[1] = yy;
 719         return FALSE;
 720 }
 721
 722 gboolean
 723 map_key_zoom_timeout()
 724 {
 725         printf("%s()\n", __PRETTY_FUNCTION__);
 726         if (_key_zoom_new < _zoom) {
 727                 /* We're currently zooming in (_zoom is decreasing). */
 728                 guint test = _key_zoom_new - _curr_repo->view_zoom_steps;
 729                 if (test < MAX_ZOOM)
 730                         _key_zoom_new = test;
 731                 else
 732                         return FALSE;
 733         } else {
 734                 /* We're currently zooming out (_zoom is increasing). */
 735                 guint test = _key_zoom_new + _curr_repo->view_zoom_steps;
 736                 if (test < MAX_ZOOM)
 737                         _key_zoom_new = test;
 738                 else
 739                         return FALSE;
 740         }
 741
 742         /* We can zoom more - tell them how much they're zooming. */
 743         {
 744                 gchar buffer[32];
 745                 snprintf(buffer, sizeof(buffer), "%s %d", _("Zoom to Level"), _key_zoom_new);
 746                 MACRO_BANNER_SHOW_INFO(_window, buffer);
 747         }
 748         vprintf("%s(): return\n", __PRETTY_FUNCTION__);
 749         return TRUE;
 750 }
 751
 752 void
 753 map_scale_draw(GdkEventExpose *event)
 754 {
 755         gdk_rectangle_intersect(&event->area, &_scale_rect, &event->area);
 756
 757         if (event->area.width && event->area.height) {
 758                 gdk_draw_rectangle(_map_widget->window,
 759                                    _map_widget->style->
 760                                    bg_gc[GTK_WIDGET_STATE(_map_widget)],
 761                                    TRUE, _scale_rect.x, _scale_rect.y,
 762                                    _scale_rect.width,
 763                                    _scale_rect.height);
 764                 gdk_draw_rectangle(_map_widget->window,
 765                                    _map_widget->style->
 766                                    fg_gc[GTK_WIDGET_STATE(_map_widget)],
 767                                    FALSE, _scale_rect.x, _scale_rect.y,
 768                                    _scale_rect.width,
 769                                    _scale_rect.height);
 770
 771                 /* Now calculate and draw the distance. */
 772                 {
 773                         gchar buffer[16];
 774                         gdouble distance;
 775                         gdouble lat1, lon1, lat2, lon2;
 776                         gint width;
 777
 778                         unit2latlon(_center.unitx - pixel2unit(SCALE_WIDTH / 2 - 4),
 779                                     _center.unity, lat1, lon1);
 780                         unit2latlon(_center.unitx + pixel2unit(SCALE_WIDTH / 2 - 4),
 781                                     _center.unity, lat2, lon2);
 782                         distance = calculate_distance(lat1, lon1, lat2, lon2) * UNITS_CONVERT[_units];
 783
 784                         if (distance < 1.f)
 785                                 snprintf(buffer, sizeof(buffer),
 786                                          "%0.2f %s", distance,
 787                                          UNITS_TEXT[_units]);
 788                         else if (distance < 10.f)
 789                                 snprintf(buffer, sizeof(buffer),
 790                                          "%0.1f %s", distance,
 791                                          UNITS_TEXT[_units]);
 792                         else
 793                                 snprintf(buffer, sizeof(buffer),
 794                                          "%0.f %s", distance,
 795                                          UNITS_TEXT[_units]);
 796
 797                         pango_layout_set_text(_scale_layout, buffer, -1);
 798                         pango_layout_get_pixel_size(_scale_layout, &width, NULL);
 799
 800                         /* Draw the layout itself. */
 801                         gdk_draw_layout(_map_widget->window,
 802                                         _map_widget->style->
 803                                         fg_gc[GTK_WIDGET_STATE
 804                                               (_map_widget)],
 805                                         _scale_rect.x +
 806                                         (_scale_rect.width - width) / 2,
 807                                         _scale_rect.y, _scale_layout);
 808
 809                         /* Draw little hashes on the ends. */
 810                         gdk_draw_line(_map_widget->window,
 811                                       _map_widget->style->
 812                                       fg_gc[GTK_WIDGET_STATE
 813                                             (_map_widget)],
 814                                       _scale_rect.x + 4,
 815                                       _scale_rect.y +
 816                                       _scale_rect.height / 2 - 4,
 817                                       _scale_rect.x + 4,
 818                                       _scale_rect.y +
 819                                       _scale_rect.height / 2 + 4);
 820                         gdk_draw_line(_map_widget->window,
 821                                       _map_widget->style->
 822                                       fg_gc[GTK_WIDGET_STATE
 823                                             (_map_widget)],
 824                                       _scale_rect.x + 4,
 825                                       _scale_rect.y +
 826                                       _scale_rect.height / 2,
 827                                       _scale_rect.x +
 828                                       (_scale_rect.width - width) / 2 -
 829                                       4,
 830                                       _scale_rect.y +
 831                                       _scale_rect.height / 2);
 832                         gdk_draw_line(_map_widget->window,
 833                                       _map_widget->style->
 834                                       fg_gc[GTK_WIDGET_STATE
 835                                             (_map_widget)],
 836                                       _scale_rect.x +
 837                                       _scale_rect.width - 4,
 838                                       _scale_rect.y +
 839                                       _scale_rect.height / 2 - 4,
 840                                       _scale_rect.x +
 841                                       _scale_rect.width - 4,
 842                                       _scale_rect.y +
 843                                       _scale_rect.height / 2 + 4);
 844                         gdk_draw_line(_map_widget->window,
 845                                       _map_widget->style->
 846                                       fg_gc[GTK_WIDGET_STATE
 847                                             (_map_widget)],
 848                                       _scale_rect.x +
 849                                       _scale_rect.width - 4,
 850                                       _scale_rect.y +
 851                                       _scale_rect.height / 2,
 852                                       _scale_rect.x +
 853                                       (_scale_rect.width + width) / 2 +
 854                                       4,
 855                                       _scale_rect.y +
 856                                       _scale_rect.height / 2);
 857                 }
 858         }
 859 }
 860
 861 gboolean
 862 map_cb_expose(GtkWidget * widget, GdkEventExpose * event)
 863 {
 864 g_printf("%s(%d, %d, %d, %d)\n", __PRETTY_FUNCTION__,
 865        event->area.x, event->area.y,
 866        event->area.width, event->area.height);
 867
 868 gdk_draw_drawable(GDK_DRAWABLE(_map_widget->window),
 869                   _gc[COLORABLE_MARK],
 870                   _map_pixmap,
 871                   event->area.x + _offsetx, event->area.y + _offsety,
 872                   event->area.x, event->area.y,
 873                   event->area.width, event->area.height);
 874 map_draw_mark();
 875
 876 /* Draw scale, if necessary. */
 877 if (_show_scale)
 878         map_scale_draw(event);
 879
 880 return TRUE;
 881 }
 882
 883 int
 884 map_zoom(gint zdir)
 885 {
 886 gchar buffer[80];
 887 gint nzoom;
 888
 889 nzoom = _zoom + zdir;
 890
 891 if ((nzoom > 0) && (nzoom < MAX_ZOOM - 1)) {
 892         snprintf(buffer, sizeof(buffer), "%s %d", _("Zoom to Level"), nzoom);
 893         MACRO_BANNER_SHOW_INFO(_window, buffer);
 894         map_set_zoom(nzoom);
 895 }
 896
 897 return nzoom;
 898 }
 899
 900 static gboolean
 901 map_autozoomer()
 902 {
 903 static gfloat z=5.0;
 904 static gint last=5;
 905 gint iz;
 906
 907 if (zoom_timeout_sid==0)
 908         return FALSE;
 909
 910 z=(z+_gps.speed+1)/5;
 911 if (z>5) z=5.0; else if (z<1) z=1.0;
 912 iz=(gint)roundf(z);
 913 #ifdef DEBUG
 914 g_printf("Setting autozoom to: %f %d S:%f\n", z, iz, _gps.speed);
 915 #endif
 916 if (iz>last)
 917         iz=last+1;
 918 else if (iz<last)
 919         iz=last-1;
 920 last=iz;
 921 map_set_zoom(iz);
 922
 923 return TRUE;
 924 }
 925
 926 void
 927 map_set_autozoom(gboolean az)
 928 {
 929 if (az==TRUE) {
 930         MACRO_BANNER_SHOW_INFO(_window, "Autozoom enabled");
 931         zoom_timeout_sid=g_timeout_add(_gps.speed<5 ? 2000 : 5000, (GSourceFunc) map_autozoomer, NULL);
 932         return;
 933 } else {
 934         if (zoom_timeout_sid) {
 935                 g_source_remove(zoom_timeout_sid);
 936                 zoom_timeout_sid=0;
 937                 MACRO_BANNER_SHOW_INFO(_window, "Autozoom disabled");
 938         }
 939         return;
 940 }
 941
 942 }
 943
 944 static void
 945 map_draw_route(gint x, gint y)
 946 {
 947 cmenu_route_add_way(x, y);
 948 }
 949
 950 static void
 951 map_draw_track(gint x, gint y)
 952 {
 953 _pos.unitx = x2unit((gint) (x + 0.5));
 954 _pos.unity = y2unit((gint) (y + 0.5));
 955 unit2latlon(_pos.unitx, _pos.unity, _gps.lat, _gps.lon);
 956 _gps.speed = 20.f;
 957 integerize_data(&_gps, &_pos);
 958 track_add(time(NULL), FALSE);
 959 map_refresh_mark();
 960 }
 961
 962 static void
 963 map_set_place_information(osm_way *s, osm_place *mp, osm_place *sp)
 964 {
 965 gchar buffer[256];
 966
 967 if (!s && !mp && !sp) {
 968         snprintf(buffer, sizeof(buffer), _("Unknown location"));
 969 } else {
 970         /* oh, fun */
 971         snprintf(buffer, sizeof(buffer), "%s%s%s%s%s%s%s%s%s%s",
 972         s ? s->name ? s->name : _("unknown") : "?",
 973         s ? s->ref ? ", " : "" : "",
 974         s ? s->ref ? s->ref : "" : "",
 975         s ? s->int_ref ? " (" : "" : "",
 976         s ? s->int_ref ? s->int_ref : "" : "",
 977         s ? s->int_ref ? ") " : "" : "",
 978         (sp && sp->name) ? " in " : "",
 979         (sp && sp->name) ? sp->name : "",
 980         (mp && mp->name) ? " in " : "",
 981         (mp && mp->name) ? mp->name : "");
 982 }
 983 gtk_label_set_label(GTK_LABEL(info_banner.location), buffer);
 984 }
 985
 986 static void
 987 map_update_destination(gdouble lat, gdouble lon)
 988 {
 989 if (_dest.valid) {
 990         gchar buffer[32];
 991         gdouble dt=calculate_distance(lat, lon, _dest.lat, _dest.lon);
 992         gdouble dh=calculate_course(lat, lon, _dest.lat, _dest.lon);
 993         snprintf(buffer, sizeof(buffer), "%.02f %s (%0.02f)", dt * UNITS_CONVERT[_units], UNITS_TEXT[_units], dh);
 994         gtk_label_set_label(GTK_LABEL(info_banner.distance), buffer);
 995 } else {
 996         gtk_label_set_label(GTK_LABEL(info_banner.distance), "");
 997 }
 998 }
 999
1000 static void
1001 map_update_location(gint x, gint y, gboolean force)
1002 {
1003 gint ilat, ilon;
1004 gdouble lat,lon;
1005 static gboolean inp=FALSE;
1006
1007 /* We run the gtk mainloop in progress callback so we can be called again, we don't like that */
1008 if (inp==TRUE)
1009         return;
1010 inp=TRUE;
1011
1012 unit2latlon(x, y, lat, lon);
1013 ilat=lat2mp_int(lat);
1014 ilon=lon2mp_int(lon);
1015
1016 if (_gps.fix>1 && !force)
1017         osm_set_way_range_from_speed(_gps.speed);
1018 else
1019         osm_set_way_range(OSM_RANGE_WAY/4);
1020
1021 osm_progress_set_widget(_db, _progress_item);
1022 _map_location_known=osm_get_location_data(ilat, ilon, &map_loc);
1023 _map_location_dist=map_loc.street ? map_loc.street->dist : 900000.0;
1024 if (map_loc.valid)
1025         map_set_place_information(map_loc.street, map_loc.primary, map_loc.secondary);
1026 else
1027         map_set_place_information(NULL, NULL, NULL);
1028 osm_progress_set_widget(_db, NULL);
1029
1030 map_update_destination(lat, lon);
1031
1032 inp=FALSE;
1033 }
1034
1035 gboolean
1036 map_cb_scroll_event(GtkWidget * widget, GdkEventScroll * event)
1037 {
1038 if (event->direction == GDK_SCROLL_UP) {
1039         map_center_unit(x2unit((gint) (event->x + 0.5)), y2unit((gint) (event->y + 0.5)));
1040         map_set_zoom(_zoom - 1);
1041 } else if (event->direction == GDK_SCROLL_DOWN) {
1042         map_center_unit(x2unit((gint) (event->x + 0.5)), y2unit((gint) (event->y + 0.5)));
1043         map_set_zoom(_zoom + 1);
1044 }
1045 return FALSE;
1046 }
1047
1048 gboolean
1049 map_cb_button_press(GtkWidget * widget, GdkEventButton * event)
1050 {
1051         printf("%s()\n", __PRETTY_FUNCTION__);
1052
1053         _cmenu_position_x = event->x + 0.5;
1054         _cmenu_position_y = event->y + 0.5;
1055
1056         switch (event->button) {
1057         case 1:
1058                 if (event->type == GDK_2BUTTON_PRESS) {
1059                         map_set_zoom(_zoom - 1);
1060                         return FALSE;
1061                 }
1062                 if (event->type == GDK_3BUTTON_PRESS)
1063                         return FALSE;
1064                 break;
1065         case 2:
1066                 press[0] = event->x;
1067                 press[1] = event->y;
1068                 before[0] = press[0];
1069                 before[1] = press[1];
1070
1071                 _id = g_signal_connect(G_OBJECT(_map_widget),
1072                                      "motion_notify_event",
1073                                      G_CALLBACK(map_follow_move), NULL);
1074                 break;
1075         case 3:
1076 #ifndef WITH_HILDON
1077                 gtk_menu_popup(GTK_MENU(_menu_map), NULL, NULL, NULL, NULL,
1078                                event->button, gtk_get_current_event_time());
1079 #endif
1080                 break;
1081         }
1082
1083         /* Return FALSE to allow context menu to work. */
1084         vprintf("%s(): return FALSE\n", __PRETTY_FUNCTION__);
1085         return FALSE;
1086 }
1087
1088 gboolean
1089 map_cb_button_release(GtkWidget * widget, GdkEventButton * event)
1090 {
1091 switch (event->button) {
1092         case 1:
1093                 if (_center_mode > 0)
1094                         set_action_activate("autocenter_none", TRUE);
1095
1096                 switch (map_mode) {
1097                 case MAP_MODE_DRAW_TRACK:
1098                         map_draw_track(event->x, event->y);
1099                 break;
1100                 case MAP_MODE_DRAW_ROUTE:
1101                         map_draw_route(event->x, event->y);
1102                 break;
1103                 case MAP_MODE_SET_ROUTE_FROM:
1104                 case MAP_MODE_SET_ROUTE_POINT:
1105                 case MAP_MODE_SET_ROUTE_TO:
1106                 break;
1107                 }
1108
1109 #if 0
1110                 ux = x2unit((gint) (event->x + 0.5));
1111                 uy = y2unit((gint) (event->y + 0.5));
1112                 map_update_location(ux, uy);
1113 #else
1114                 g_idle_add((GSourceFunc)map_update_location_from_center, NULL);
1115 #endif
1116
1117                 map_center_unit(x2unit((gint) (event->x + 0.5)),
1118                                 y2unit((gint) (event->y + 0.5)));
1119
1120                 break;
1121         case 2:
1122                 release[0] = event->x;
1123                 release[1] = event->y;
1124
1125                 g_signal_handler_disconnect(G_OBJECT(_map_widget), _id);
1126
1127                 press[0] = 0;
1128                 press[1] = 0;
1129                 release[0] = 0;
1130                 release[1] = 0;
1131                 before[0] = 0;
1132                 before[1] = 0;
1133                 break;
1134         case 3:
1135                 break;
1136 }
1137
1138 /* Return FALSE to avoid context menu (if it hasn't popped up already). */
1139 return FALSE;
1140 }