Contents of /trunk/src/osm-gps-map.c

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Revision 74 - (show annotations)
Mon Aug 24 09:23:36 2009 UTC (14 years, 8 months ago) by harbaum
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OSD color matching
1 /* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4 -*- */
2 /* vim:set et sw=4 ts=4 cino=t0,(0: */
3 /*
4 * osm-gps-map.c
5 * Copyright (C) Marcus Bauer 2008 <marcus.bauer@gmail.com>
6 * Copyright (C) John Stowers 2009 <john.stowers@gmail.com>
7 *
8 * Contributions by
9 * Everaldo Canuto 2009 <everaldo.canuto@gmail.com>
10 *
11 * osm-gps-map.c is free software: you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the
13 * Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
15 *
16 * osm-gps-map.c is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19 * See the 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, see <http://www.gnu.org/licenses/>.
23 */
24
25 #include "config.h"
26
27 #include <fcntl.h>
28 #include <math.h>
29 #include <unistd.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33
34 #include <gdk/gdk.h>
35 #include <glib.h>
36 #include <glib/gstdio.h>
37 #include <glib/gprintf.h>
38 #include <libsoup/soup.h>
39
40 #include "converter.h"
41 #include "osm-gps-map-types.h"
42 #include "osm-gps-map.h"
43
44 #ifdef USE_CAIRO
45 #include <cairo.h>
46 #endif
47
48 #define ENABLE_DEBUG 0
49
50 #define EXTRA_BORDER (TILESIZE / 2)
51
52 struct _OsmGpsMapPrivate
53 {
54 GHashTable *tile_queue;
55 GHashTable *missing_tiles;
56 GHashTable *tile_cache;
57
58 int map_zoom;
59 int max_zoom;
60 int min_zoom;
61 gboolean map_auto_center;
62 gboolean map_auto_download;
63 int map_x;
64 int map_y;
65
66 /* Latitude and longitude of the center of the map, in radians */
67 gfloat center_rlat;
68 gfloat center_rlon;
69
70 guint max_tile_cache_size;
71 /* Incremented at each redraw */
72 guint redraw_cycle;
73 /* ID of the idle redraw operation */
74 guint idle_map_redraw;
75
76 //how we download tiles
77 SoupSession *soup_session;
78 char *proxy_uri;
79
80 //where downloaded tiles are cached
81 char *cache_dir;
82 gboolean cache_dir_is_full_path;
83
84 //contains flags indicating the various special characters
85 //the uri string contains, that will be replaced when calculating
86 //the uri to download.
87 OsmGpsMapSource_t map_source;
88 char *repo_uri;
89 char *image_format;
90 int uri_format;
91 //flag indicating if the map source is located on the google
92 gboolean the_google;
93
94 //gps tracking state
95 gboolean record_trip_history;
96 gboolean show_trip_history;
97 GSList *trip_history;
98 coord_t *gps;
99 gboolean gps_valid;
100
101 #ifdef ENABLE_BALLOON
102 //a balloon with additional info
103 struct {
104 coord_t *coo;
105 gboolean valid;
106 OsmGpsMapRect_t rect;
107 OsmGpsMapBalloonCallback cb;
108 gpointer data;
109 } balloon;
110 #endif
111
112 #ifdef ENABLE_OSD
113 //the osd controls (if present)
114 osm_gps_map_osd_t *osd;
115 #endif
116
117 //additional images or tracks added to the map
118 GSList *tracks;
119 GSList *images;
120
121 //Used for storing the joined tiles
122 GdkPixmap *pixmap;
123 GdkGC *gc_map;
124
125 //The tile painted when one cannot be found
126 GdkPixbuf *null_tile;
127
128 //For tracking click and drag
129 int drag_counter;
130 int drag_mouse_dx;
131 int drag_mouse_dy;
132 int drag_start_mouse_x;
133 int drag_start_mouse_y;
134 int drag_start_map_x;
135 int drag_start_map_y;
136
137 //for customizing the redering of the gps track
138 int ui_gps_track_width;
139 int ui_gps_point_inner_radius;
140 int ui_gps_point_outer_radius;
141
142 guint is_disposed : 1;
143 guint dragging : 1;
144 guint center_coord_set : 1;
145 };
146
147 #define OSM_GPS_MAP_PRIVATE(o) (OSM_GPS_MAP (o)->priv)
148
149 typedef struct
150 {
151 GdkPixbuf *pixbuf;
152 /* We keep track of the number of the redraw cycle this tile was last used,
153 * so that osm_gps_map_purge_cache() can remove the older ones */
154 guint redraw_cycle;
155 } OsmCachedTile;
156
157 enum
158 {
159 PROP_0,
160
161 PROP_AUTO_CENTER,
162 PROP_RECORD_TRIP_HISTORY,
163 PROP_SHOW_TRIP_HISTORY,
164 PROP_AUTO_DOWNLOAD,
165 PROP_REPO_URI,
166 PROP_PROXY_URI,
167 PROP_TILE_CACHE_DIR,
168 PROP_TILE_CACHE_DIR_IS_FULL_PATH,
169 PROP_ZOOM,
170 PROP_MAX_ZOOM,
171 PROP_MIN_ZOOM,
172 PROP_LATITUDE,
173 PROP_LONGITUDE,
174 PROP_MAP_X,
175 PROP_MAP_Y,
176 PROP_TILES_QUEUED,
177 PROP_GPS_TRACK_WIDTH,
178 PROP_GPS_POINT_R1,
179 PROP_GPS_POINT_R2,
180 PROP_MAP_SOURCE,
181 PROP_IMAGE_FORMAT
182 };
183
184 G_DEFINE_TYPE (OsmGpsMap, osm_gps_map, GTK_TYPE_DRAWING_AREA);
185
186 /*
187 * Drawing function forward defintions
188 */
189 static gchar *replace_string(const gchar *src, const gchar *from, const gchar *to);
190 static void inspect_map_uri(OsmGpsMap *map);
191 static gchar *replace_map_uri(OsmGpsMap *map, const gchar *uri, int zoom, int x, int y);
192 static void osm_gps_map_print_images (OsmGpsMap *map);
193 static void osm_gps_map_draw_gps_point (OsmGpsMap *map);
194 static void osm_gps_map_blit_tile(OsmGpsMap *map, GdkPixbuf *pixbuf, int offset_x, int offset_y);
195 #ifdef LIBSOUP22
196 static void osm_gps_map_tile_download_complete (SoupMessage *msg, gpointer user_data);
197 #else
198 static void osm_gps_map_tile_download_complete (SoupSession *session, SoupMessage *msg, gpointer user_data);
199 #endif
200 static void osm_gps_map_download_tile (OsmGpsMap *map, int zoom, int x, int y, gboolean redraw);
201 static void osm_gps_map_load_tile (OsmGpsMap *map, int zoom, int x, int y, int offset_x, int offset_y);
202 static void osm_gps_map_fill_tiles_pixel (OsmGpsMap *map);
203 static gboolean osm_gps_map_map_redraw (OsmGpsMap *map);
204 static void osm_gps_map_map_redraw_idle (OsmGpsMap *map);
205
206 static void
207 cached_tile_free (OsmCachedTile *tile)
208 {
209 g_object_unref (tile->pixbuf);
210 g_slice_free (OsmCachedTile, tile);
211 }
212
213 /*
214 * Description:
215 * Find and replace text within a string.
216 *
217 * Parameters:
218 * src (in) - pointer to source string
219 * from (in) - pointer to search text
220 * to (in) - pointer to replacement text
221 *
222 * Returns:
223 * Returns a pointer to dynamically-allocated memory containing string
224 * with occurences of the text pointed to by 'from' replaced by with the
225 * text pointed to by 'to'.
226 */
227 static gchar *
228 replace_string(const gchar *src, const gchar *from, const gchar *to)
229 {
230 size_t size = strlen(src) + 1;
231 size_t fromlen = strlen(from);
232 size_t tolen = strlen(to);
233
234 /* Allocate the first chunk with enough for the original string. */
235 gchar *value = g_malloc(size);
236
237
238 /* We need to return 'value', so let's make a copy to mess around with. */
239 gchar *dst = value;
240
241 if ( value != NULL )
242 {
243 for ( ;; )
244 {
245 /* Try to find the search text. */
246 const gchar *match = g_strstr_len(src, size, from);
247 if ( match != NULL )
248 {
249 gchar *temp;
250 /* Find out how many characters to copy up to the 'match'. */
251 size_t count = match - src;
252
253
254 /* Calculate the total size the string will be after the
255 * replacement is performed. */
256 size += tolen - fromlen;
257
258 temp = g_realloc(value, size);
259 if ( temp == NULL )
260 {
261 g_free(value);
262 return NULL;
263 }
264
265 /* we'll want to return 'value' eventually, so let's point it
266 * to the memory that we are now working with.
267 * And let's not forget to point to the right location in
268 * the destination as well. */
269 dst = temp + (dst - value);
270 value = temp;
271
272 /*
273 * Copy from the source to the point where we matched. Then
274 * move the source pointer ahead by the amount we copied. And
275 * move the destination pointer ahead by the same amount.
276 */
277 g_memmove(dst, src, count);
278 src += count;
279 dst += count;
280
281 /* Now copy in the replacement text 'to' at the position of
282 * the match. Adjust the source pointer by the text we replaced.
283 * Adjust the destination pointer by the amount of replacement
284 * text. */
285 g_memmove(dst, to, tolen);
286 src += fromlen;
287 dst += tolen;
288 }
289 else
290 {
291 /*
292 * Copy any remaining part of the string. This includes the null
293 * termination character.
294 */
295 strcpy(dst, src);
296 break;
297 }
298 }
299 }
300 return value;
301 }
302
303 static void
304 map_convert_coords_to_quadtree_string(OsmGpsMap *map, gint x, gint y, gint zoomlevel,
305 gchar *buffer, const gchar initial,
306 const gchar *const quadrant)
307 {
308 gchar *ptr = buffer;
309 gint n;
310
311 if (initial)
312 *ptr++ = initial;
313
314 for(n = zoomlevel-1; n >= 0; n--)
315 {
316 gint xbit = (x >> n) & 1;
317 gint ybit = (y >> n) & 1;
318 *ptr++ = quadrant[xbit + 2 * ybit];
319 }
320
321 *ptr++ = '\0';
322 }
323
324
325 static void
326 inspect_map_uri(OsmGpsMap *map)
327 {
328 OsmGpsMapPrivate *priv = map->priv;
329
330 if (g_strrstr(priv->repo_uri, URI_MARKER_X))
331 priv->uri_format |= URI_HAS_X;
332
333 if (g_strrstr(priv->repo_uri, URI_MARKER_Y))
334 priv->uri_format |= URI_HAS_Y;
335
336 if (g_strrstr(priv->repo_uri, URI_MARKER_Z))
337 priv->uri_format |= URI_HAS_Z;
338
339 if (g_strrstr(priv->repo_uri, URI_MARKER_S))
340 priv->uri_format |= URI_HAS_S;
341
342 if (g_strrstr(priv->repo_uri, URI_MARKER_Q))
343 priv->uri_format |= URI_HAS_Q;
344
345 if (g_strrstr(priv->repo_uri, URI_MARKER_Q0))
346 priv->uri_format |= URI_HAS_Q0;
347
348 if (g_strrstr(priv->repo_uri, URI_MARKER_YS))
349 priv->uri_format |= URI_HAS_YS;
350
351 if (g_strrstr(priv->repo_uri, URI_MARKER_R))
352 priv->uri_format |= URI_HAS_R;
353
354 if (g_strrstr(priv->repo_uri, "google.com"))
355 priv->the_google = TRUE;
356
357 g_debug("URI Format: 0x%X (google: %X)", priv->uri_format, priv->the_google);
358
359 }
360
361 static gchar *
362 replace_map_uri(OsmGpsMap *map, const gchar *uri, int zoom, int x, int y)
363 {
364 OsmGpsMapPrivate *priv = map->priv;
365 char *url;
366 unsigned int i;
367 char location[22];
368
369 i = 1;
370 url = g_strdup(uri);
371 while (i < URI_FLAG_END)
372 {
373 char *s = NULL;
374 char *old;
375
376 old = url;
377 switch(i & priv->uri_format)
378 {
379 case URI_HAS_X:
380 s = g_strdup_printf("%d", x);
381 url = replace_string(url, URI_MARKER_X, s);
382 //g_debug("FOUND " URI_MARKER_X);
383 break;
384 case URI_HAS_Y:
385 s = g_strdup_printf("%d", y);
386 url = replace_string(url, URI_MARKER_Y, s);
387 //g_debug("FOUND " URI_MARKER_Y);
388 break;
389 case URI_HAS_Z:
390 s = g_strdup_printf("%d", zoom);
391 url = replace_string(url, URI_MARKER_Z, s);
392 //g_debug("FOUND " URI_MARKER_Z);
393 break;
394 case URI_HAS_S:
395 s = g_strdup_printf("%d", priv->max_zoom-zoom);
396 url = replace_string(url, URI_MARKER_S, s);
397 //g_debug("FOUND " URI_MARKER_S);
398 break;
399 case URI_HAS_Q:
400 map_convert_coords_to_quadtree_string(map,x,y,zoom,location,'t',"qrts");
401 s = g_strdup_printf("%s", location);
402 url = replace_string(url, URI_MARKER_Q, s);
403 //g_debug("FOUND " URI_MARKER_Q);
404 break;
405 case URI_HAS_Q0:
406 map_convert_coords_to_quadtree_string(map,x,y,zoom,location,'\0', "0123");
407 s = g_strdup_printf("%s", location);
408 url = replace_string(url, URI_MARKER_Q0, s);
409 //g_debug("FOUND " URI_MARKER_Q0);
410 break;
411 case URI_HAS_YS:
412 // s = g_strdup_printf("%d", y);
413 // url = replace_string(url, URI_MARKER_YS, s);
414 g_warning("FOUND " URI_MARKER_YS " NOT IMPLEMENTED");
415 // retval = g_strdup_printf(repo->url,
416 // tilex,
417 // (1 << (MAX_ZOOM - zoom)) - tiley - 1,
418 // zoom - (MAX_ZOOM - 17));
419 break;
420 case URI_HAS_R:
421 s = g_strdup_printf("%d", g_random_int_range(0,4));
422 url = replace_string(url, URI_MARKER_R, s);
423 //g_debug("FOUND " URI_MARKER_R);
424 break;
425 default:
426 s = NULL;
427 break;
428 }
429
430 if (s) {
431 g_free(s);
432 g_free(old);
433 }
434
435 i = (i << 1);
436
437 }
438
439 return url;
440 }
441
442 static void
443 my_log_handler (const gchar * log_domain, GLogLevelFlags log_level, const gchar * message, gpointer user_data)
444 {
445 if (!(log_level & G_LOG_LEVEL_DEBUG) || ENABLE_DEBUG)
446 g_log_default_handler (log_domain, log_level, message, user_data);
447 }
448
449 static float
450 osm_gps_map_get_scale_at_point(int zoom, float rlat, float rlon)
451 {
452 /* world at zoom 1 == 512 pixels */
453 return cos(rlat) * M_PI * OSM_EQ_RADIUS / (1<<(7+zoom));
454 }
455
456 /* clears the trip list and all resources */
457 static void
458 osm_gps_map_free_trip (OsmGpsMap *map)
459 {
460 OsmGpsMapPrivate *priv = map->priv;
461 if (priv->trip_history) {
462 g_slist_foreach(priv->trip_history, (GFunc) g_free, NULL);
463 g_slist_free(priv->trip_history);
464 priv->trip_history = NULL;
465 }
466 }
467
468 /* clears the tracks and all resources */
469 static void
470 osm_gps_map_free_tracks (OsmGpsMap *map)
471 {
472 OsmGpsMapPrivate *priv = map->priv;
473 if (priv->tracks)
474 {
475 GSList* tmp = priv->tracks;
476 while (tmp != NULL)
477 {
478 g_slist_foreach(tmp->data, (GFunc) g_free, NULL);
479 g_slist_free(tmp->data);
480 tmp = g_slist_next(tmp);
481 }
482 g_slist_free(priv->tracks);
483 priv->tracks = NULL;
484 }
485 }
486
487 /* free the poi image lists */
488 static void
489 osm_gps_map_free_images (OsmGpsMap *map)
490 {
491 OsmGpsMapPrivate *priv = map->priv;
492 if (priv->images) {
493 GSList *list;
494 for(list = priv->images; list != NULL; list = list->next)
495 {
496 image_t *im = list->data;
497 g_object_unref(im->image);
498 g_free(im);
499 }
500 g_slist_free(priv->images);
501 priv->images = NULL;
502 }
503 }
504
505 static void
506 osm_gps_map_print_images (OsmGpsMap *map)
507 {
508 GSList *list;
509 int x,y,pixel_x,pixel_y;
510 int min_x = 0,min_y = 0,max_x = 0,max_y = 0;
511 int map_x0, map_y0;
512 OsmGpsMapPrivate *priv = map->priv;
513
514 map_x0 = priv->map_x - EXTRA_BORDER;
515 map_y0 = priv->map_y - EXTRA_BORDER;
516 for(list = priv->images; list != NULL; list = list->next)
517 {
518 image_t *im = list->data;
519
520 // pixel_x,y, offsets
521 pixel_x = lon2pixel(priv->map_zoom, im->pt.rlon);
522 pixel_y = lat2pixel(priv->map_zoom, im->pt.rlat);
523
524 g_debug("Image %dx%d @: %f,%f (%d,%d)",
525 im->w, im->h,
526 im->pt.rlat, im->pt.rlon,
527 pixel_x, pixel_y);
528
529 x = pixel_x - map_x0;
530 y = pixel_y - map_y0;
531
532 gdk_draw_pixbuf (
533 priv->pixmap,
534 priv->gc_map,
535 im->image,
536 0,0,
537 x-(im->w/2),y-(im->h/2),
538 im->w,im->h,
539 GDK_RGB_DITHER_NONE, 0, 0);
540
541 max_x = MAX(x+im->w,max_x);
542 min_x = MIN(x-im->w,min_x);
543 max_y = MAX(y+im->h,max_y);
544 min_y = MIN(y-im->h,min_y);
545 }
546
547 gtk_widget_queue_draw_area (
548 GTK_WIDGET(map),
549 min_x + EXTRA_BORDER, min_y + EXTRA_BORDER,
550 max_x + EXTRA_BORDER, max_y + EXTRA_BORDER);
551
552 }
553
554 static void
555 osm_gps_map_draw_gps_point (OsmGpsMap *map)
556 {
557 OsmGpsMapPrivate *priv = map->priv;
558
559 //incase we get called before we have got a gps point
560 if (priv->gps_valid) {
561 int map_x0, map_y0;
562 int x, y;
563 int r = priv->ui_gps_point_inner_radius;
564 int r2 = priv->ui_gps_point_outer_radius;
565 // int lw = priv->ui_gps_track_width;
566 int mr = MAX(r,r2);
567
568 map_x0 = priv->map_x - EXTRA_BORDER;
569 map_y0 = priv->map_y - EXTRA_BORDER;
570 x = lon2pixel(priv->map_zoom, priv->gps->rlon) - map_x0;
571 y = lat2pixel(priv->map_zoom, priv->gps->rlat) - map_y0;
572 #ifdef USE_CAIRO
573 cairo_t *cr;
574 cairo_pattern_t *pat;
575 #else
576 GdkColor color;
577 GdkGC *marker;
578 #endif
579
580 #ifdef USE_CAIRO
581 cr = gdk_cairo_create(priv->pixmap);
582
583 // draw transparent area
584 if (r2 > 0) {
585 cairo_set_line_width (cr, 1.5);
586 cairo_set_source_rgba (cr, 0.75, 0.75, 0.75, 0.4);
587 cairo_arc (cr, x, y, r2, 0, 2 * M_PI);
588 cairo_fill (cr);
589 // draw transparent area border
590 cairo_set_source_rgba (cr, 0.55, 0.55, 0.55, 0.4);
591 cairo_arc (cr, x, y, r2, 0, 2 * M_PI);
592 cairo_stroke(cr);
593 }
594
595 // draw ball gradient
596 if (r > 0) {
597 pat = cairo_pattern_create_radial (x-(r/5), y-(r/5), (r/5), x, y, r);
598 cairo_pattern_add_color_stop_rgba (pat, 0, 1, 1, 1, 1.0);
599 cairo_pattern_add_color_stop_rgba (pat, 1, 0, 0, 1, 1.0);
600 cairo_set_source (cr, pat);
601 cairo_arc (cr, x, y, r, 0, 2 * M_PI);
602 cairo_fill (cr);
603 cairo_pattern_destroy (pat);
604 // draw ball border
605 cairo_set_line_width (cr, 1.0);
606 cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
607 cairo_arc (cr, x, y, r, 0, 2 * M_PI);
608 cairo_stroke(cr);
609 }
610
611 cairo_destroy(cr);
612 gtk_widget_queue_draw_area (GTK_WIDGET(map),
613 x-mr,
614 y-mr,
615 mr*2,
616 mr*2);
617 #else
618 marker = gdk_gc_new(priv->pixmap);
619 color.red = 5000;
620 color.green = 5000;
621 color.blue = 55000;
622 gdk_gc_set_rgb_fg_color(marker, &color);
623 gdk_gc_set_line_attributes(marker, lw, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND);
624
625 if (r2 > 0) {
626 gdk_draw_arc (priv->pixmap,
627 marker,
628 FALSE, //filled
629 x-r2, y-r2, // x,y
630 r2*2,r2*2, // width, height
631 0, 360*64); // start-end angle 64th, from 3h, anti clockwise
632 }
633 if (r > 0) {
634 gdk_draw_arc (priv->pixmap,
635 marker,
636 TRUE, //filled
637 x-r, y-r, // x,y
638 r*2,r*2, // width, height
639 0, 360*64); // start-end angle 64th, from 3h, anti clockwise
640 }
641
642 g_object_unref(marker);
643 gtk_widget_queue_draw_area (GTK_WIDGET(map),
644 x-(mr+lw),
645 y-(mr+lw),
646 (mr*2)+lw+lw,
647 (mr*2)+lw+lw);
648 #endif
649 }
650 }
651
652 #ifdef ENABLE_BALLOON
653 /* most visual effects are hardcoded by now, but may be made */
654 /* available via properties later */
655 #ifndef BALLOON_AREA_WIDTH
656 #define BALLOON_AREA_WIDTH 290
657 #endif
658 #ifndef BALLOON_AREA_HEIGHT
659 #define BALLOON_AREA_HEIGHT 75
660 #endif
661 #ifndef BALLOON_CORNER_RADIUS
662 #define BALLOON_CORNER_RADIUS 10
663 #endif
664
665 #define BALLOON_BORDER (BALLOON_CORNER_RADIUS/2)
666 #define BALLOON_WIDTH (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
667 #define BALLOON_HEIGHT (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
668 #define BALLOON_TRANSPARENCY 0.8
669 #define POINTER_HEIGHT 20
670 #define POINTER_FOOT_WIDTH 20
671 #define POINTER_OFFSET (BALLOON_CORNER_RADIUS*3/4)
672 #define BALLOON_SHADOW (BALLOON_CORNER_RADIUS/2)
673 #define BALLOON_SHADOW_TRANSPARENCY 0.2
674
675 #define CLOSE_BUTTON_RADIUS (BALLOON_CORNER_RADIUS)
676
677
678 /* draw the bubble shape. this is used twice, once for the shape and once */
679 /* for the shadow */
680 static void
681 osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
682 gboolean bottom, int px, int py, int px0, int px1) {
683
684 cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
685 cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
686 BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
687 if(!bottom) {
688 /* insert top pointer */
689 cairo_line_to (cr, px1, y0);
690 cairo_line_to (cr, px, py);
691 cairo_line_to (cr, px0, y0);
692 }
693
694 cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
695 cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
696 BALLOON_CORNER_RADIUS, -M_PI/2, 0);
697 cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
698 cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
699 BALLOON_CORNER_RADIUS, 0, M_PI/2);
700 if(bottom) {
701 /* insert bottom pointer */
702 cairo_line_to (cr, px0, y1);
703 cairo_line_to (cr, px, py);
704 cairo_line_to (cr, px1, y1);
705 }
706
707 cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
708 cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
709 BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
710
711 cairo_close_path (cr);
712 }
713
714 static void
715 osm_gps_map_draw_balloon_int (OsmGpsMap *map)
716 {
717 OsmGpsMapPrivate *priv = map->priv;
718
719 if (priv->balloon.valid) {
720
721 /* ------- convert given coordinate into screen position --------- */
722 int x0 = lon2pixel(priv->map_zoom, priv->balloon.coo->rlon) -
723 priv->map_x + EXTRA_BORDER;
724 int y0 = lat2pixel(priv->map_zoom, priv->balloon.coo->rlat) -
725 priv->map_y + EXTRA_BORDER;
726
727 /* check position of this relative to screen center to determine */
728 /* pointer direction ... */
729 int pointer_x = x0, pointer_x0, pointer_x1;
730 int pointer_y = y0;
731
732 /* ... and calculate position */
733 if((x0 - EXTRA_BORDER) > GTK_WIDGET(map)->allocation.width/2) {
734 x0 -= BALLOON_WIDTH - POINTER_OFFSET;
735 pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
736 pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
737 } else {
738 x0 -= POINTER_OFFSET;
739 pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
740 pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
741 }
742
743 gboolean bottom = FALSE;
744 if((y0 - EXTRA_BORDER) > GTK_WIDGET(map)->allocation.height/2) {
745 bottom = TRUE;
746 y0 -= BALLOON_HEIGHT + POINTER_HEIGHT;
747 } else
748 y0 += POINTER_HEIGHT;
749
750 /* calculate bottom/right of box */
751 int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
752
753 /* save balloon screen coordinates for later use */
754 priv->balloon.rect.x = x0 + BALLOON_BORDER;
755 priv->balloon.rect.y = y0 + BALLOON_BORDER;
756 priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
757 priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
758
759 #ifdef USE_CAIRO
760 cairo_t *cr = gdk_cairo_create(priv->pixmap);
761
762 /* --------- draw shadow --------------- */
763 osm_gps_map_draw_balloon_shape (cr,
764 x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
765 x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
766 bottom, pointer_x, pointer_y,
767 pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
768
769 cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
770 cairo_fill_preserve (cr);
771 cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
772 cairo_set_line_width (cr, 0);
773 cairo_stroke (cr);
774
775 /* --------- draw main shape ----------- */
776 osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
777 bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
778
779 cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
780 cairo_fill_preserve (cr);
781 cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
782 cairo_set_line_width (cr, 1);
783 cairo_stroke (cr);
784
785
786 /* ---------- draw close button --------- */
787
788 int cx = x1 - BALLOON_BORDER - CLOSE_BUTTON_RADIUS;
789 int cy = y0 + BALLOON_BORDER + CLOSE_BUTTON_RADIUS;
790 int crad = CLOSE_BUTTON_RADIUS;
791
792 cairo_arc (cr, cx, cy, crad, 0, 2 * M_PI);
793 cairo_set_source_rgba (cr, 0.8, 0, 0, 1.0);
794 cairo_fill_preserve (cr);
795 cairo_set_source_rgba (cr, 0.3, 0, 0, 1.0);
796 cairo_set_line_width (cr, 2);
797 cairo_stroke(cr);
798
799 cairo_set_source_rgba (cr, 1, 1, 1, 1.0);
800 cairo_set_line_width (cr, BALLOON_CORNER_RADIUS/3.3);
801 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
802 cairo_move_to (cr, cx - crad/2, cy - crad/2);
803 cairo_line_to (cr, cx + crad/2, cy + crad/2);
804 cairo_stroke (cr);
805 cairo_move_to (cr, cx + crad/2, cy - crad/2);
806 cairo_line_to (cr, cx - crad/2, cy + crad/2);
807 cairo_stroke (cr);
808
809 if (priv->balloon.cb) {
810 /* clip in case application tries to draw in */
811 /* exceed of the balloon */
812 cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
813 priv->balloon.rect.w, priv->balloon.rect.h);
814 cairo_clip (cr);
815 cairo_new_path (cr); /* current path is not
816 consumed by cairo_clip() */
817
818 priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
819 }
820
821 cairo_destroy(cr);
822
823 gtk_widget_queue_draw_area (GTK_WIDGET(map),
824 x0, y0, BALLOON_WIDTH,
825 BALLOON_HEIGHT + POINTER_HEIGHT);
826 #else
827 #warning "Balloon display lacks a non-cairo implementation!"
828 #endif
829 }
830 }
831
832 /* the user clicked into the balloons main area. handle this */
833 static void
834 osm_gps_map_handle_balloon_click(OsmGpsMap *map, gint x, gint y)
835 {
836 OsmGpsMapPrivate *priv = map->priv;
837
838 if (!priv->balloon.valid)
839 return;
840
841 /* check if the close button was clicked */
842 if ((x > priv->balloon.rect.w - 2*CLOSE_BUTTON_RADIUS) &&
843 (x < priv->balloon.rect.w) &&
844 (y > 0) && (y < 2*CLOSE_BUTTON_RADIUS)) {
845
846 priv->balloon.valid = FALSE;
847 osm_gps_map_map_redraw_idle(map);
848 }
849 }
850
851 /* return true if balloon is being displayed and if */
852 /* the given coordinate is within this balloon */
853 static gboolean
854 osm_gps_map_in_balloon(OsmGpsMapPrivate *priv, gint x, gint y)
855 {
856 return (priv->balloon.valid &&
857 (x > priv->balloon.rect.x) &&
858 (x < priv->balloon.rect.x + priv->balloon.rect.w) &&
859 (y > priv->balloon.rect.y) &&
860 (y < priv->balloon.rect.y + priv->balloon.rect.h));
861 }
862 #endif // ENABLE_BALLOON
863
864 static void
865 osm_gps_map_blit_tile(OsmGpsMap *map, GdkPixbuf *pixbuf, int offset_x, int offset_y)
866 {
867 OsmGpsMapPrivate *priv = map->priv;
868
869 g_debug("Queing redraw @ %d,%d (w:%d h:%d)", offset_x,offset_y, TILESIZE,TILESIZE);
870
871 /* draw pixbuf onto pixmap */
872 gdk_draw_pixbuf (priv->pixmap,
873 priv->gc_map,
874 pixbuf,
875 0,0,
876 offset_x,offset_y,
877 TILESIZE,TILESIZE,
878 GDK_RGB_DITHER_NONE, 0, 0);
879 }
880
881 /* libsoup-2.2 and libsoup-2.4 use different ways to store the body data */
882 #ifdef LIBSOUP22
883 #define soup_message_headers_append(a,b,c) soup_message_add_header(a,b,c)
884 #define MSG_RESPONSE_BODY(a) ((a)->response.body)
885 #define MSG_RESPONSE_LEN(a) ((a)->response.length)
886 #define MSG_RESPONSE_LEN_FORMAT "%u"
887 #else
888 #define MSG_RESPONSE_BODY(a) ((a)->response_body->data)
889 #define MSG_RESPONSE_LEN(a) ((a)->response_body->length)
890 #define MSG_RESPONSE_LEN_FORMAT "%lld"
891 #endif
892
893 #ifdef LIBSOUP22
894 static void
895 osm_gps_map_tile_download_complete (SoupMessage *msg, gpointer user_data)
896 #else
897 static void
898 osm_gps_map_tile_download_complete (SoupSession *session, SoupMessage *msg, gpointer user_data)
899 #endif
900 {
901 FILE *file;
902 tile_download_t *dl = (tile_download_t *)user_data;
903 OsmGpsMap *map = OSM_GPS_MAP(dl->map);
904 OsmGpsMapPrivate *priv = map->priv;
905 gboolean file_saved = FALSE;
906
907 if (SOUP_STATUS_IS_SUCCESSFUL (msg->status_code))
908 {
909 /* save tile into cachedir if one has been specified */
910 if (priv->cache_dir)
911 {
912 if (g_mkdir_with_parents(dl->folder,0700) == 0)
913 {
914 file = g_fopen(dl->filename, "wb");
915 if (file != NULL)
916 {
917 fwrite (MSG_RESPONSE_BODY(msg), 1, MSG_RESPONSE_LEN(msg), file);
918 file_saved = TRUE;
919 g_debug("Wrote "MSG_RESPONSE_LEN_FORMAT" bytes to %s", MSG_RESPONSE_LEN(msg), dl->filename);
920 fclose (file);
921
922 }
923 }
924 else
925 {
926 g_warning("Error creating tile download directory: %s",
927 dl->folder);
928 perror("perror:");
929 }
930 }
931
932 if (dl->redraw)
933 {
934 GdkPixbuf *pixbuf = NULL;
935
936 /* if the file was actually stored on disk, we can simply */
937 /* load and decode it from that file */
938 if (priv->cache_dir)
939 {
940 if (file_saved)
941 {
942 pixbuf = gdk_pixbuf_new_from_file (dl->filename, NULL);
943 }
944 }
945 else
946 {
947 GdkPixbufLoader *loader;
948 char *extension = strrchr (dl->filename, '.');
949
950 /* parse file directly from memory */
951 if (extension)
952 {
953 loader = gdk_pixbuf_loader_new_with_type (extension+1, NULL);
954 if (!gdk_pixbuf_loader_write (loader, (unsigned char*)MSG_RESPONSE_BODY(msg), MSG_RESPONSE_LEN(msg), NULL))
955 {
956 g_warning("Error: Decoding of image failed");
957 }
958 gdk_pixbuf_loader_close(loader, NULL);
959
960 pixbuf = gdk_pixbuf_loader_get_pixbuf(loader);
961
962 /* give up loader but keep the pixbuf */
963 g_object_ref(pixbuf);
964 g_object_unref(loader);
965 }
966 else
967 {
968 g_warning("Error: Unable to determine image file format");
969 }
970 }
971
972 /* Store the tile into the cache */
973 if (G_LIKELY (pixbuf))
974 {
975 OsmCachedTile *tile = g_slice_new (OsmCachedTile);
976 tile->pixbuf = pixbuf;
977 tile->redraw_cycle = priv->redraw_cycle;
978 /* if the tile is already in the cache (it could be one
979 * rendered from another zoom level), it will be
980 * overwritten */
981 g_hash_table_insert (priv->tile_cache, dl->filename, tile);
982 /* NULL-ify dl->filename so that it won't be freed, as
983 * we are using it as a key in the hash table */
984 dl->filename = NULL;
985 }
986 osm_gps_map_map_redraw_idle (map);
987 }
988 g_hash_table_remove(priv->tile_queue, dl->uri);
989
990 g_free(dl->uri);
991 g_free(dl->folder);
992 g_free(dl->filename);
993 g_free(dl);
994 }
995 else
996 {
997 g_warning("Error downloading tile: %d - %s", msg->status_code, msg->reason_phrase);
998 if (msg->status_code == SOUP_STATUS_NOT_FOUND)
999 {
1000 g_hash_table_insert(priv->missing_tiles, dl->uri, NULL);
1001 g_hash_table_remove(priv->tile_queue, dl->uri);
1002 }
1003 else if (msg->status_code == SOUP_STATUS_CANCELLED)
1004 {
1005 ;//application exiting
1006 }
1007 else
1008 {
1009 #ifdef LIBSOUP22
1010 soup_session_requeue_message(dl->session, msg);
1011 #else
1012 soup_session_requeue_message(session, msg);
1013 #endif
1014 return;
1015 }
1016 }
1017
1018
1019 }
1020
1021 static void
1022 osm_gps_map_download_tile (OsmGpsMap *map, int zoom, int x, int y, gboolean redraw)
1023 {
1024 SoupMessage *msg;
1025 OsmGpsMapPrivate *priv = map->priv;
1026 tile_download_t *dl = g_new0(tile_download_t,1);
1027
1028 //calculate the uri to download
1029 dl->uri = replace_map_uri(map, priv->repo_uri, zoom, x, y);
1030
1031 #ifdef LIBSOUP22
1032 dl->session = priv->soup_session;
1033 #endif
1034
1035 //check the tile has not already been queued for download,
1036 //or has been attempted, and its missing
1037 if (g_hash_table_lookup_extended(priv->tile_queue, dl->uri, NULL, NULL) ||
1038 g_hash_table_lookup_extended(priv->missing_tiles, dl->uri, NULL, NULL) )
1039 {
1040 g_debug("Tile already downloading (or missing)");
1041 g_free(dl->uri);
1042 g_free(dl);
1043 } else {
1044 dl->folder = g_strdup_printf("%s%c%d%c%d%c",
1045 priv->cache_dir, G_DIR_SEPARATOR,
1046 zoom, G_DIR_SEPARATOR,
1047 x, G_DIR_SEPARATOR);
1048 dl->filename = g_strdup_printf("%s%c%d%c%d%c%d.%s",
1049 priv->cache_dir, G_DIR_SEPARATOR,
1050 zoom, G_DIR_SEPARATOR,
1051 x, G_DIR_SEPARATOR,
1052 y,
1053 priv->image_format);
1054 dl->map = map;
1055 dl->redraw = redraw;
1056
1057 g_debug("Download tile: %d,%d z:%d\n\t%s --> %s", x, y, zoom, dl->uri, dl->filename);
1058
1059 msg = soup_message_new (SOUP_METHOD_GET, dl->uri);
1060 if (msg) {
1061 if (priv->the_google) {
1062 //Set maps.google.com as the referrer
1063 g_debug("Setting Google Referrer");
1064 soup_message_headers_append(msg->request_headers, "Referer", "http://maps.google.com/");
1065 //For google satelite also set the appropriate cookie value
1066 if (priv->uri_format & URI_HAS_Q) {
1067 const char *cookie = g_getenv("GOOGLE_COOKIE");
1068 if (cookie) {
1069 g_debug("Adding Google Cookie");
1070 soup_message_headers_append(msg->request_headers, "Cookie", cookie);
1071 }
1072 }
1073 }
1074
1075 g_hash_table_insert (priv->tile_queue, dl->uri, msg);
1076 soup_session_queue_message (priv->soup_session, msg, osm_gps_map_tile_download_complete, dl);
1077 } else {
1078 g_warning("Could not create soup message");
1079 g_free(dl->uri);
1080 g_free(dl->folder);
1081 g_free(dl->filename);
1082 g_free(dl);
1083 }
1084 }
1085 }
1086
1087 static GdkPixbuf *
1088 osm_gps_map_load_cached_tile (OsmGpsMap *map, int zoom, int x, int y)
1089 {
1090 OsmGpsMapPrivate *priv = map->priv;
1091 gchar *filename;
1092 GdkPixbuf *pixbuf = NULL;
1093 OsmCachedTile *tile;
1094
1095 filename = g_strdup_printf("%s%c%d%c%d%c%d.%s",
1096 priv->cache_dir, G_DIR_SEPARATOR,
1097 zoom, G_DIR_SEPARATOR,
1098 x, G_DIR_SEPARATOR,
1099 y,
1100 priv->image_format);
1101
1102 tile = g_hash_table_lookup (priv->tile_cache, filename);
1103 if (tile)
1104 {
1105 g_free (filename);
1106 }
1107 else
1108 {
1109 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
1110 if (pixbuf)
1111 {
1112 tile = g_slice_new (OsmCachedTile);
1113 tile->pixbuf = pixbuf;
1114 g_hash_table_insert (priv->tile_cache, filename, tile);
1115 }
1116 }
1117
1118 /* set/update the redraw_cycle timestamp on the tile */
1119 if (tile)
1120 {
1121 tile->redraw_cycle = priv->redraw_cycle;
1122 pixbuf = g_object_ref (tile->pixbuf);
1123 }
1124
1125 return pixbuf;
1126 }
1127
1128 static GdkPixbuf *
1129 osm_gps_map_find_bigger_tile (OsmGpsMap *map, int zoom, int x, int y,
1130 int *zoom_found)
1131 {
1132 GdkPixbuf *pixbuf;
1133 int next_zoom, next_x, next_y;
1134
1135 if (zoom == 0) return NULL;
1136 next_zoom = zoom - 1;
1137 next_x = x / 2;
1138 next_y = y / 2;
1139 pixbuf = osm_gps_map_load_cached_tile (map, next_zoom, next_x, next_y);
1140 if (pixbuf)
1141 *zoom_found = next_zoom;
1142 else
1143 pixbuf = osm_gps_map_find_bigger_tile (map, next_zoom, next_x, next_y,
1144 zoom_found);
1145 return pixbuf;
1146 }
1147
1148 static GdkPixbuf *
1149 osm_gps_map_render_missing_tile_upscaled (OsmGpsMap *map, int zoom,
1150 int x, int y)
1151 {
1152 GdkPixbuf *pixbuf, *big, *area;
1153 int zoom_big, zoom_diff, area_size, area_x, area_y;
1154 int modulo;
1155
1156 big = osm_gps_map_find_bigger_tile (map, zoom, x, y, &zoom_big);
1157 if (!big) return NULL;
1158
1159 g_debug ("Found bigger tile (zoom = %d, wanted = %d)", zoom_big, zoom);
1160
1161 /* get a Pixbuf for the area to magnify */
1162 zoom_diff = zoom - zoom_big;
1163 area_size = TILESIZE >> zoom_diff;
1164 modulo = 1 << zoom_diff;
1165 area_x = (x % modulo) * area_size;
1166 area_y = (y % modulo) * area_size;
1167 area = gdk_pixbuf_new_subpixbuf (big, area_x, area_y,
1168 area_size, area_size);
1169 g_object_unref (big);
1170 pixbuf = gdk_pixbuf_scale_simple (area, TILESIZE, TILESIZE,
1171 GDK_INTERP_NEAREST);
1172 g_object_unref (area);
1173 return pixbuf;
1174 }
1175
1176 static GdkPixbuf *
1177 osm_gps_map_render_missing_tile (OsmGpsMap *map, int zoom, int x, int y)
1178 {
1179 /* maybe TODO: render from downscaled tiles, if the following fails */
1180 return osm_gps_map_render_missing_tile_upscaled (map, zoom, x, y);
1181 }
1182
1183 static void
1184 osm_gps_map_load_tile (OsmGpsMap *map, int zoom, int x, int y, int offset_x, int offset_y)
1185 {
1186 OsmGpsMapPrivate *priv = map->priv;
1187 gchar *filename;
1188 GdkPixbuf *pixbuf;
1189
1190 g_debug("Load tile %d,%d (%d,%d) z:%d", x, y, offset_x, offset_y, zoom);
1191
1192 if (priv->map_source == OSM_GPS_MAP_SOURCE_NULL) {
1193 osm_gps_map_blit_tile(map, priv->null_tile, offset_x,offset_y);
1194 return;
1195 }
1196
1197 filename = g_strdup_printf("%s%c%d%c%d%c%d.%s",
1198 priv->cache_dir, G_DIR_SEPARATOR,
1199 zoom, G_DIR_SEPARATOR,
1200 x, G_DIR_SEPARATOR,
1201 y,
1202 priv->image_format);
1203
1204 /* try to get file from internal cache first */
1205 if(!(pixbuf = osm_gps_map_load_cached_tile(map, zoom, x, y)))
1206 pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
1207
1208 if(pixbuf)
1209 {
1210 g_debug("Found tile %s", filename);
1211 osm_gps_map_blit_tile(map, pixbuf, offset_x,offset_y);
1212 g_object_unref (pixbuf);
1213 }
1214 else
1215 {
1216 if (priv->map_auto_download)
1217 osm_gps_map_download_tile(map, zoom, x, y, TRUE);
1218
1219 /* try to render the tile by scaling cached tiles from other zoom
1220 * levels */
1221 pixbuf = osm_gps_map_render_missing_tile (map, zoom, x, y);
1222 if (pixbuf)
1223 {
1224 gdk_draw_pixbuf (priv->pixmap,
1225 priv->gc_map,
1226 pixbuf,
1227 0,0,
1228 offset_x,offset_y,
1229 TILESIZE,TILESIZE,
1230 GDK_RGB_DITHER_NONE, 0, 0);
1231 g_object_unref (pixbuf);
1232 }
1233 else
1234 {
1235 //prevent some artifacts when drawing not yet loaded areas.
1236 gdk_draw_rectangle (priv->pixmap,
1237 GTK_WIDGET(map)->style->white_gc,
1238 TRUE, offset_x, offset_y, TILESIZE, TILESIZE);
1239 }
1240 }
1241 g_free(filename);
1242 }
1243
1244 static void
1245 osm_gps_map_fill_tiles_pixel (OsmGpsMap *map)
1246 {
1247 OsmGpsMapPrivate *priv = map->priv;
1248 int i,j, width, height, tile_x0, tile_y0, tiles_nx, tiles_ny;
1249 int offset_xn = 0;
1250 int offset_yn = 0;
1251 int offset_x;
1252 int offset_y;
1253
1254 g_debug("Fill tiles: %d,%d z:%d", priv->map_x, priv->map_y, priv->map_zoom);
1255
1256 offset_x = - priv->map_x % TILESIZE;
1257 offset_y = - priv->map_y % TILESIZE;
1258 if (offset_x > 0) offset_x -= TILESIZE;
1259 if (offset_y > 0) offset_y -= TILESIZE;
1260
1261 offset_xn = offset_x + EXTRA_BORDER;
1262 offset_yn = offset_y + EXTRA_BORDER;
1263
1264 width = GTK_WIDGET(map)->allocation.width;
1265 height = GTK_WIDGET(map)->allocation.height;
1266
1267 tiles_nx = (width - offset_x) / TILESIZE + 1;
1268 tiles_ny = (height - offset_y) / TILESIZE + 1;
1269
1270 tile_x0 = floor((float)priv->map_x / (float)TILESIZE);
1271 tile_y0 = floor((float)priv->map_y / (float)TILESIZE);
1272
1273 //TODO: implement wrap around
1274 for (i=tile_x0; i<(tile_x0+tiles_nx);i++)
1275 {
1276 for (j=tile_y0; j<(tile_y0+tiles_ny); j++)
1277 {
1278 if( j<0 || i<0 || i>=exp(priv->map_zoom * M_LN2) || j>=exp(priv->map_zoom * M_LN2))
1279 {
1280 gdk_draw_rectangle (priv->pixmap,
1281 GTK_WIDGET(map)->style->white_gc,
1282 TRUE,
1283 offset_xn, offset_yn,
1284 TILESIZE,TILESIZE);
1285 }
1286 else
1287 {
1288 osm_gps_map_load_tile(map,
1289 priv->map_zoom,
1290 i,j,
1291 offset_xn,offset_yn);
1292 }
1293 offset_yn += TILESIZE;
1294 }
1295 offset_xn += TILESIZE;
1296 offset_yn = offset_y + EXTRA_BORDER;
1297 }
1298 }
1299
1300 static void
1301 osm_gps_map_print_track (OsmGpsMap *map, GSList *trackpoint_list)
1302 {
1303 OsmGpsMapPrivate *priv = map->priv;
1304
1305 GSList *list;
1306 int x,y;
1307 int min_x = 0,min_y = 0,max_x = 0,max_y = 0;
1308 int lw = priv->ui_gps_track_width;
1309 int map_x0, map_y0;
1310 #ifdef USE_CAIRO
1311 cairo_t *cr;
1312 #else
1313 int last_x = 0, last_y = 0;
1314 GdkColor color;
1315 GdkGC *gc;
1316 #endif
1317
1318 #ifdef USE_CAIRO
1319 cr = gdk_cairo_create(priv->pixmap);
1320 cairo_set_line_width (cr, lw);
1321 cairo_set_source_rgba (cr, 60000.0/65535.0, 0.0, 0.0, 0.6);
1322 cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND);
1323 cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
1324 #else
1325 gc = gdk_gc_new(priv->pixmap);
1326 color.green = 0;
1327 color.blue = 0;
1328 color.red = 60000;
1329 gdk_gc_set_rgb_fg_color(gc, &color);
1330 gdk_gc_set_line_attributes(gc, lw, GDK_LINE_SOLID, GDK_CAP_ROUND, GDK_JOIN_ROUND);
1331 #endif
1332
1333 map_x0 = priv->map_x - EXTRA_BORDER;
1334 map_y0 = priv->map_y - EXTRA_BORDER;
1335 for(list = trackpoint_list; list != NULL; list = list->next)
1336 {
1337 coord_t *tp = list->data;
1338
1339 x = lon2pixel(priv->map_zoom, tp->rlon) - map_x0;
1340 y = lat2pixel(priv->map_zoom, tp->rlat) - map_y0;
1341
1342 // first time through loop
1343 if (list == trackpoint_list) {
1344 #ifdef USE_CAIRO
1345 cairo_move_to(cr, x, y);
1346 #else
1347 last_x = x;
1348 last_y = y;
1349 #endif
1350 }
1351
1352 #ifdef USE_CAIRO
1353 cairo_line_to(cr, x, y);
1354 #else
1355 gdk_draw_line (priv->pixmap, gc, x, y, last_x, last_y);
1356 last_x = x;
1357 last_y = y;
1358 #endif
1359
1360 max_x = MAX(x,max_x);
1361 min_x = MIN(x,min_x);
1362 max_y = MAX(y,max_y);
1363 min_y = MIN(y,min_y);
1364 }
1365
1366 gtk_widget_queue_draw_area (
1367 GTK_WIDGET(map),
1368 min_x - lw,
1369 min_y - lw,
1370 max_x + (lw * 2),
1371 max_y + (lw * 2));
1372
1373 #ifdef USE_CAIRO
1374 cairo_stroke(cr);
1375 cairo_destroy(cr);
1376 #else
1377 g_object_unref(gc);
1378 #endif
1379 }
1380
1381 /* Prints the gps trip history, and any other tracks */
1382 static void
1383 osm_gps_map_print_tracks (OsmGpsMap *map)
1384 {
1385 OsmGpsMapPrivate *priv = map->priv;
1386
1387 if (priv->show_trip_history)
1388 osm_gps_map_print_track (map, priv->trip_history);
1389
1390 if (priv->tracks)
1391 {
1392 GSList* tmp = priv->tracks;
1393 while (tmp != NULL)
1394 {
1395 osm_gps_map_print_track (map, tmp->data);
1396 tmp = g_slist_next(tmp);
1397 }
1398 }
1399 }
1400
1401 static gboolean
1402 osm_gps_map_purge_cache_check(gpointer key, gpointer value, gpointer user)
1403 {
1404 return (((OsmCachedTile*)value)->redraw_cycle != ((OsmGpsMapPrivate*)user)->redraw_cycle);
1405 }
1406
1407 static void
1408 osm_gps_map_purge_cache (OsmGpsMap *map)
1409 {
1410 OsmGpsMapPrivate *priv = map->priv;
1411
1412 if (g_hash_table_size (priv->tile_cache) < priv->max_tile_cache_size)
1413 return;
1414
1415 /* run through the cache, and remove the tiles which have not been used
1416 * during the last redraw operation */
1417 g_hash_table_foreach_remove(priv->tile_cache, osm_gps_map_purge_cache_check, priv);
1418 }
1419
1420 static gboolean
1421 osm_gps_map_map_redraw (OsmGpsMap *map)
1422 {
1423 OsmGpsMapPrivate *priv = map->priv;
1424
1425 priv->idle_map_redraw = 0;
1426
1427 /* the motion_notify handler uses priv->pixmap to redraw the area; if we
1428 * change it while we are dragging, we will end up showing it in the wrong
1429 * place. This could be fixed by carefully recompute the coordinates, but
1430 * for now it's easier just to disable redrawing the map while dragging */
1431 if (priv->dragging)
1432 return FALSE;
1433
1434 priv->redraw_cycle++;
1435
1436 /* draw white background to initialise pixmap */
1437 gdk_draw_rectangle (
1438 priv->pixmap,
1439 GTK_WIDGET(map)->style->white_gc,
1440 TRUE,
1441 0, 0,
1442 GTK_WIDGET(map)->allocation.width + EXTRA_BORDER * 2,
1443 GTK_WIDGET(map)->allocation.height + EXTRA_BORDER * 2);
1444
1445 osm_gps_map_fill_tiles_pixel(map);
1446
1447 osm_gps_map_print_tracks(map);
1448 osm_gps_map_draw_gps_point(map);
1449 osm_gps_map_print_images(map);
1450 #ifdef ENABLE_BALLOON
1451 osm_gps_map_draw_balloon_int(map);
1452 #endif
1453
1454 #ifdef ENABLE_OSD
1455 if(priv->osd)
1456 priv->osd->draw(priv->osd, EXTRA_BORDER, EXTRA_BORDER);
1457 #endif
1458
1459 //osm_gps_map_osd_speed(map, 1.5);
1460 osm_gps_map_purge_cache(map);
1461 gtk_widget_queue_draw (GTK_WIDGET (map));
1462
1463 return FALSE;
1464 }
1465
1466 static void
1467 osm_gps_map_map_redraw_idle (OsmGpsMap *map)
1468 {
1469 OsmGpsMapPrivate *priv = map->priv;
1470
1471 if (priv->idle_map_redraw == 0)
1472 priv->idle_map_redraw = g_idle_add ((GSourceFunc)osm_gps_map_map_redraw, map);
1473 }
1474
1475 static void
1476 osm_gps_map_init (OsmGpsMap *object)
1477 {
1478 OsmGpsMapPrivate *priv;
1479
1480 priv = G_TYPE_INSTANCE_GET_PRIVATE (object, OSM_TYPE_GPS_MAP, OsmGpsMapPrivate);
1481 object->priv = priv;
1482
1483 priv->pixmap = NULL;
1484
1485 priv->trip_history = NULL;
1486 priv->gps = g_new0(coord_t, 1);
1487 priv->gps_valid = FALSE;
1488
1489 #ifdef ENABLE_BALLOON
1490 priv->balloon.coo = g_new0(coord_t, 1);
1491 priv->balloon.valid = FALSE;
1492 priv->balloon.cb = NULL;
1493 #endif
1494
1495 #ifdef ENABLE_OSD
1496 priv->osd = NULL;
1497 #endif
1498
1499 priv->tracks = NULL;
1500 priv->images = NULL;
1501
1502 priv->drag_counter = 0;
1503 priv->drag_mouse_dx = 0;
1504 priv->drag_mouse_dy = 0;
1505 priv->drag_start_mouse_x = 0;
1506 priv->drag_start_mouse_y = 0;
1507
1508 priv->uri_format = 0;
1509 priv->the_google = FALSE;
1510
1511 priv->map_source = -1;
1512
1513 #ifndef LIBSOUP22
1514 //Change naumber of concurrent connections option?
1515 priv->soup_session = soup_session_async_new_with_options(
1516 SOUP_SESSION_USER_AGENT,
1517 "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.11) Gecko/20071127 Firefox/2.0.0.11",
1518 NULL);
1519 #else
1520 /* libsoup-2.2 seems not to be able to set the user agent */
1521 priv->soup_session = soup_session_async_new();
1522 #endif
1523
1524 //Hash table which maps tile d/l URIs to SoupMessage requests
1525 priv->tile_queue = g_hash_table_new (g_str_hash, g_str_equal);
1526
1527 //Some mapping providers (Google) have varying degrees of tiles at multiple
1528 //zoom levels
1529 priv->missing_tiles = g_hash_table_new (g_str_hash, g_str_equal);
1530
1531 /* memory cache for most recently used tiles */
1532 priv->tile_cache = g_hash_table_new_full (g_str_hash, g_str_equal,
1533 g_free, (GDestroyNotify)cached_tile_free);
1534 priv->max_tile_cache_size = 20;
1535
1536 gtk_widget_add_events (GTK_WIDGET (object),
1537 GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
1538 GDK_POINTER_MOTION_MASK |
1539 GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK);
1540 GTK_WIDGET_SET_FLAGS (object, GTK_CAN_FOCUS);
1541
1542 g_log_set_handler (G_LOG_DOMAIN, G_LOG_LEVEL_MASK, my_log_handler, NULL);
1543 }
1544
1545 #ifndef G_CHECKSUM_MD5
1546 /* simple hash algorithm hack if md5 is not present */
1547 static char *simple_hash(char *str) {
1548 union {
1549 char str[4];
1550 gulong val;
1551 } hash = { .val = 0x55555555 };
1552
1553 while(*str) {
1554 hash.str[(int)str & 3] ^= *str;
1555 str++;
1556 }
1557 return g_strdup_printf("%08lX", hash.val);
1558 }
1559 #endif
1560
1561 static GObject *
1562 osm_gps_map_constructor (GType gtype, guint n_properties, GObjectConstructParam *properties)
1563 {
1564 GObject *object;
1565 OsmGpsMapPrivate *priv;
1566 OsmGpsMap *map;
1567 const char *uri;
1568
1569 //Always chain up to the parent constructor
1570 object = G_OBJECT_CLASS(osm_gps_map_parent_class)->constructor(gtype, n_properties, properties);
1571 map = OSM_GPS_MAP(object);
1572 priv = OSM_GPS_MAP_PRIVATE(object);
1573
1574 //user can specify a map source ID, or a repo URI as the map source
1575 uri = osm_gps_map_source_get_repo_uri(OSM_GPS_MAP_SOURCE_NULL);
1576 if ( (priv->map_source == 0) || (strcmp(priv->repo_uri, uri) == 0) ) {
1577 g_debug("Using null source");
1578 priv->map_source = OSM_GPS_MAP_SOURCE_NULL;
1579
1580 priv->null_tile = gdk_pixbuf_new(GDK_COLORSPACE_RGB, FALSE, 8, 256, 256);
1581 gdk_pixbuf_fill(priv->null_tile, 0xcccccc00);
1582 }
1583 else if (priv->map_source >= 0) {
1584 //check if the source given is valid
1585 uri = osm_gps_map_source_get_repo_uri(priv->map_source);
1586 if (uri) {
1587 g_debug("Setting map source from ID");
1588 g_free(priv->repo_uri);
1589
1590 priv->repo_uri = g_strdup(uri);
1591 priv->image_format = g_strdup(
1592 osm_gps_map_source_get_image_format(priv->map_source));
1593 priv->max_zoom = osm_gps_map_source_get_max_zoom(priv->map_source);
1594 priv->min_zoom = osm_gps_map_source_get_min_zoom(priv->map_source);
1595 }
1596 }
1597
1598 if (!priv->cache_dir_is_full_path) {
1599 #ifdef G_CHECKSUM_MD5
1600 char *md5 = g_compute_checksum_for_string (G_CHECKSUM_MD5, priv->repo_uri, -1);
1601 #else
1602 char *md5 = simple_hash(priv->repo_uri);
1603 #endif
1604
1605 if (priv->cache_dir) {
1606 char *old = priv->cache_dir;
1607 //the new cachedir is the given cache dir + the md5 of the repo_uri
1608 priv->cache_dir = g_strdup_printf("%s%c%s", old, G_DIR_SEPARATOR, md5);
1609 g_debug("Adjusting cache dir %s -> %s", old, priv->cache_dir);
1610 g_free(old);
1611 } else {
1612 //the new cachedir is the current dir + the md5 of the repo_uri
1613 priv->cache_dir = g_strdup(md5);
1614 }
1615
1616 g_free(md5);
1617 }
1618
1619 inspect_map_uri(map);
1620
1621 return object;
1622 }
1623
1624 static void
1625 osm_gps_map_dispose (GObject *object)
1626 {
1627 OsmGpsMap *map = OSM_GPS_MAP(object);
1628 OsmGpsMapPrivate *priv = map->priv;
1629
1630 if (priv->is_disposed)
1631 return;
1632
1633 priv->is_disposed = TRUE;
1634
1635 soup_session_abort(priv->soup_session);
1636 g_object_unref(priv->soup_session);
1637
1638 g_hash_table_destroy(priv->tile_queue);
1639 g_hash_table_destroy(priv->missing_tiles);
1640 g_hash_table_destroy(priv->tile_cache);
1641
1642 osm_gps_map_free_images(map);
1643
1644 if(priv->pixmap)
1645 g_object_unref (priv->pixmap);
1646
1647 if (priv->null_tile)
1648 g_object_unref (priv->null_tile);
1649
1650 if(priv->gc_map)
1651 g_object_unref(priv->gc_map);
1652
1653 if (priv->idle_map_redraw != 0)
1654 g_source_remove (priv->idle_map_redraw);
1655
1656 g_free(priv->gps);
1657
1658 #ifdef ENABLE_BALLOON
1659 g_free(priv->balloon.coo);
1660 #endif
1661
1662 #ifdef ENABLE_OSD
1663 if(priv->osd)
1664 priv->osd->free(priv->osd);
1665 #endif
1666
1667 G_OBJECT_CLASS (osm_gps_map_parent_class)->dispose (object);
1668 }
1669
1670 static void
1671 osm_gps_map_finalize (GObject *object)
1672 {
1673 OsmGpsMap *map = OSM_GPS_MAP(object);
1674 OsmGpsMapPrivate *priv = map->priv;
1675
1676 g_free(priv->cache_dir);
1677 g_free(priv->repo_uri);
1678 g_free(priv->image_format);
1679
1680 osm_gps_map_free_trip(map);
1681 osm_gps_map_free_tracks(map);
1682
1683 G_OBJECT_CLASS (osm_gps_map_parent_class)->finalize (object);
1684 }
1685
1686 static void
1687 osm_gps_map_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
1688 {
1689 g_return_if_fail (OSM_IS_GPS_MAP (object));
1690 OsmGpsMap *map = OSM_GPS_MAP(object);
1691 OsmGpsMapPrivate *priv = map->priv;
1692
1693 switch (prop_id)
1694 {
1695 case PROP_AUTO_CENTER:
1696 priv->map_auto_center = g_value_get_boolean (value);
1697 break;
1698 case PROP_RECORD_TRIP_HISTORY:
1699 priv->record_trip_history = g_value_get_boolean (value);
1700 break;
1701 case PROP_SHOW_TRIP_HISTORY:
1702 priv->show_trip_history = g_value_get_boolean (value);
1703 break;
1704 case PROP_AUTO_DOWNLOAD:
1705 priv->map_auto_download = g_value_get_boolean (value);
1706 break;
1707 case PROP_REPO_URI:
1708 priv->repo_uri = g_value_dup_string (value);
1709 break;
1710 case PROP_PROXY_URI:
1711 if ( g_value_get_string(value) ) {
1712 priv->proxy_uri = g_value_dup_string (value);
1713 g_debug("Setting proxy server: %s", priv->proxy_uri);
1714
1715 #ifndef LIBSOUP22
1716 GValue val = {0};
1717
1718 SoupURI* uri = soup_uri_new(priv->proxy_uri);
1719 g_value_init(&val, SOUP_TYPE_URI);
1720 g_value_take_boxed(&val, uri);
1721
1722 g_object_set_property(G_OBJECT(priv->soup_session),SOUP_SESSION_PROXY_URI,&val);
1723 #else
1724 SoupUri* uri = soup_uri_new(priv->proxy_uri);
1725 g_object_set(G_OBJECT(priv->soup_session), SOUP_SESSION_PROXY_URI, uri, NULL);
1726 #endif
1727 } else
1728 priv->proxy_uri = NULL;
1729
1730 break;
1731 case PROP_TILE_CACHE_DIR:
1732 if ( g_value_get_string(value) )
1733 priv->cache_dir = g_value_dup_string (value);
1734 break;
1735 case PROP_TILE_CACHE_DIR_IS_FULL_PATH:
1736 priv->cache_dir_is_full_path = g_value_get_boolean (value);
1737 break;
1738 case PROP_ZOOM:
1739 priv->map_zoom = g_value_get_int (value);
1740 break;
1741 case PROP_MAX_ZOOM:
1742 priv->max_zoom = g_value_get_int (value);
1743 break;
1744 case PROP_MIN_ZOOM:
1745 priv->min_zoom = g_value_get_int (value);
1746 break;
1747 case PROP_MAP_X:
1748 priv->map_x = g_value_get_int (value);
1749 priv->center_coord_set = FALSE;
1750 break;
1751 case PROP_MAP_Y:
1752 priv->map_y = g_value_get_int (value);
1753 priv->center_coord_set = FALSE;
1754 break;
1755 case PROP_GPS_TRACK_WIDTH:
1756 priv->ui_gps_track_width = g_value_get_int (value);
1757 break;
1758 case PROP_GPS_POINT_R1:
1759 priv->ui_gps_point_inner_radius = g_value_get_int (value);
1760 break;
1761 case PROP_GPS_POINT_R2:
1762 priv->ui_gps_point_outer_radius = g_value_get_int (value);
1763 break;
1764 case PROP_MAP_SOURCE:
1765 priv->map_source = g_value_get_int (value);
1766 break;
1767 case PROP_IMAGE_FORMAT:
1768 priv->image_format = g_value_dup_string (value);
1769 break;
1770 default:
1771 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1772 break;
1773 }
1774 }
1775
1776 static void
1777 osm_gps_map_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
1778 {
1779 g_return_if_fail (OSM_IS_GPS_MAP (object));
1780 float lat,lon;
1781 OsmGpsMap *map = OSM_GPS_MAP(object);
1782 OsmGpsMapPrivate *priv = map->priv;
1783
1784 switch (prop_id)
1785 {
1786 case PROP_AUTO_CENTER:
1787 g_value_set_boolean(value, priv->map_auto_center);
1788 break;
1789 case PROP_RECORD_TRIP_HISTORY:
1790 g_value_set_boolean(value, priv->record_trip_history);
1791 break;
1792 case PROP_SHOW_TRIP_HISTORY:
1793 g_value_set_boolean(value, priv->show_trip_history);
1794 break;
1795 case PROP_AUTO_DOWNLOAD:
1796 g_value_set_boolean(value, priv->map_auto_download);
1797 break;
1798 case PROP_REPO_URI:
1799 g_value_set_string(value, priv->repo_uri);
1800 break;
1801 case PROP_PROXY_URI:
1802 g_value_set_string(value, priv->proxy_uri);
1803 break;
1804 case PROP_TILE_CACHE_DIR:
1805 g_value_set_string(value, priv->cache_dir);
1806 break;
1807 case PROP_TILE_CACHE_DIR_IS_FULL_PATH:
1808 g_value_set_boolean(value, priv->cache_dir_is_full_path);
1809 break;
1810 case PROP_ZOOM:
1811 g_value_set_int(value, priv->map_zoom);
1812 break;
1813 case PROP_MAX_ZOOM:
1814 g_value_set_int(value, priv->max_zoom);
1815 break;
1816 case PROP_MIN_ZOOM:
1817 g_value_set_int(value, priv->min_zoom);
1818 break;
1819 case PROP_LATITUDE:
1820 lat = pixel2lat(priv->map_zoom,
1821 priv->map_y + (GTK_WIDGET(map)->allocation.height / 2));
1822 g_value_set_float(value, rad2deg(lat));
1823 break;
1824 case PROP_LONGITUDE:
1825 lon = pixel2lon(priv->map_zoom,
1826 priv->map_x + (GTK_WIDGET(map)->allocation.width / 2));
1827 g_value_set_float(value, rad2deg(lon));
1828 break;
1829 case PROP_MAP_X:
1830 g_value_set_int(value, priv->map_x);
1831 break;
1832 case PROP_MAP_Y:
1833 g_value_set_int(value, priv->map_y);
1834 break;
1835 case PROP_TILES_QUEUED:
1836 g_value_set_int(value, g_hash_table_size(priv->tile_queue));
1837 break;
1838 case PROP_GPS_TRACK_WIDTH:
1839 g_value_set_int(value, priv->ui_gps_track_width);
1840 break;
1841 case PROP_GPS_POINT_R1:
1842 g_value_set_int(value, priv->ui_gps_point_inner_radius);
1843 break;
1844 case PROP_GPS_POINT_R2:
1845 g_value_set_int(value, priv->ui_gps_point_outer_radius);
1846 break;
1847 case PROP_MAP_SOURCE:
1848 g_value_set_int(value, priv->map_source);
1849 break;
1850 case PROP_IMAGE_FORMAT:
1851 g_value_set_string(value, priv->image_format);
1852 break;
1853 default:
1854 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1855 break;
1856 }
1857 }
1858
1859 static gboolean
1860 osm_gps_map_scroll_event (GtkWidget *widget, GdkEventScroll *event)
1861 {
1862 OsmGpsMap *map = OSM_GPS_MAP(widget);
1863 OsmGpsMapPrivate *priv = map->priv;
1864
1865 if (event->direction == GDK_SCROLL_UP)
1866 {
1867 osm_gps_map_set_zoom(map, priv->map_zoom+1);
1868 }
1869 else
1870 {
1871 osm_gps_map_set_zoom(map, priv->map_zoom-1);
1872 }
1873
1874 return FALSE;
1875 }
1876
1877 static gboolean
1878 osm_gps_map_button_press (GtkWidget *widget, GdkEventButton *event)
1879 {
1880 OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
1881
1882 #ifdef ENABLE_BALLOON
1883 /* don't drag if the user clicked within the balloon */
1884 if (osm_gps_map_in_balloon(priv,
1885 event->x + EXTRA_BORDER,
1886 event->y + EXTRA_BORDER))
1887 {
1888 priv->drag_counter = -1;
1889 return FALSE;
1890 }
1891 #endif
1892
1893 #ifdef ENABLE_OSD
1894 #define SCROLL_STEP 10
1895
1896 /* pressed inside OSD control? */
1897 if(priv->osd) {
1898 osd_button_t but = priv->osd->check(event->x, event->y);
1899 if(but != OSD_NONE)
1900 {
1901 priv->drag_counter = -1;
1902
1903 switch(but) {
1904 case OSD_UP:
1905 priv->map_y -= GTK_WIDGET(widget)->allocation.height/SCROLL_STEP;
1906 priv->center_coord_set = FALSE;
1907 break;
1908
1909 case OSD_DOWN:
1910 priv->map_y += GTK_WIDGET(widget)->allocation.height/SCROLL_STEP;
1911 priv->center_coord_set = FALSE;
1912 break;
1913
1914 case OSD_LEFT:
1915 priv->map_x -= GTK_WIDGET(widget)->allocation.width/SCROLL_STEP;
1916 priv->center_coord_set = FALSE;
1917 break;
1918
1919 case OSD_RIGHT:
1920 priv->map_x += GTK_WIDGET(widget)->allocation.width/SCROLL_STEP;
1921 priv->center_coord_set = FALSE;
1922 break;
1923
1924 case OSD_IN:
1925 osm_gps_map_set_zoom(OSM_GPS_MAP(widget), priv->map_zoom+1);
1926 break;
1927
1928 case OSD_OUT:
1929 osm_gps_map_set_zoom(OSM_GPS_MAP(widget), priv->map_zoom-1);
1930 break;
1931
1932 default:
1933 /* all custom buttons are forwarded to the application */
1934 if(priv->osd->cb)
1935 priv->osd->cb(but, priv->osd->data);
1936 break;
1937 }
1938
1939 osm_gps_map_map_redraw_idle(OSM_GPS_MAP(widget));
1940
1941 return FALSE;
1942 }
1943 }
1944 #endif
1945
1946 priv->drag_counter = 0;
1947 priv->drag_start_mouse_x = (int) event->x;
1948 priv->drag_start_mouse_y = (int) event->y;
1949 priv->drag_start_map_x = priv->map_x;
1950 priv->drag_start_map_y = priv->map_y;
1951
1952 return FALSE;
1953 }
1954
1955 static gboolean
1956 osm_gps_map_button_release (GtkWidget *widget, GdkEventButton *event)
1957 {
1958 OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
1959
1960 #ifdef ENABLE_BALLOON
1961 /* released inside the balloon? */
1962 if (osm_gps_map_in_balloon(priv,
1963 event->x + EXTRA_BORDER,
1964 event->y + EXTRA_BORDER))
1965 {
1966 osm_gps_map_handle_balloon_click(OSM_GPS_MAP(widget),
1967 event->x - priv->balloon.rect.x + EXTRA_BORDER,
1968 event->y - priv->balloon.rect.y + EXTRA_BORDER);
1969 }
1970 #endif
1971
1972 if (priv->dragging)
1973 {
1974 priv->dragging = FALSE;
1975
1976 priv->map_x = priv->drag_start_map_x;
1977 priv->map_y = priv->drag_start_map_y;
1978
1979 priv->map_x += (priv->drag_start_mouse_x - (int) event->x);
1980 priv->map_y += (priv->drag_start_mouse_y - (int) event->y);
1981
1982 priv->center_coord_set = FALSE;
1983
1984 osm_gps_map_map_redraw_idle(OSM_GPS_MAP(widget));
1985 }
1986
1987 priv->drag_mouse_dx = 0;
1988 priv->drag_mouse_dy = 0;
1989 priv->drag_counter = -1;
1990
1991 return FALSE;
1992 }
1993
1994 static gboolean
1995 osm_gps_map_expose (GtkWidget *widget, GdkEventExpose *event);
1996
1997 static gboolean
1998 osm_gps_map_motion_notify (GtkWidget *widget, GdkEventMotion *event)
1999 {
2000 int x, y;
2001 GdkModifierType state;
2002 OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2003
2004 if (event->is_hint)
2005 gdk_window_get_pointer (event->window, &x, &y, &state);
2006 else
2007 {
2008 x = event->x;
2009 y = event->y;
2010 state = event->state;
2011 }
2012
2013 // are we being dragged
2014 if (!(state & GDK_BUTTON1_MASK))
2015 return FALSE;
2016
2017 if (priv->drag_counter < 0)
2018 return FALSE;
2019
2020 priv->drag_counter++;
2021
2022 // we havent dragged more than 6 pixels
2023 if (priv->drag_counter < 6)
2024 return FALSE;
2025
2026 #ifdef USE_MAEMO
2027 /* reduce update frequency on maemo to keep screen update fluid */
2028 static guint32 last_time = 0;
2029
2030 if(event->time - last_time < 100) return FALSE;
2031 last_time = event->time;
2032 #endif
2033
2034 priv->dragging = TRUE;
2035
2036 if (priv->map_auto_center)
2037 g_object_set(G_OBJECT(widget), "auto-center", FALSE, NULL);
2038
2039 priv->drag_mouse_dx = x - priv->drag_start_mouse_x;
2040 priv->drag_mouse_dy = y - priv->drag_start_mouse_y;
2041
2042 #ifdef ENABLE_OSD
2043 if(priv->osd) {
2044 /* undo OSD */
2045 priv->osd->restore (priv->osd);
2046
2047 /* draw new OSD */
2048 priv->osd->draw (priv->osd,
2049 EXTRA_BORDER - priv->drag_mouse_dx,
2050 EXTRA_BORDER - priv->drag_mouse_dy);
2051 }
2052 #endif
2053
2054 osm_gps_map_expose (widget, NULL);
2055
2056 return FALSE;
2057 }
2058
2059 static gboolean
2060 osm_gps_map_configure (GtkWidget *widget, GdkEventConfigure *event)
2061 {
2062 OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2063
2064 /* create pixmap */
2065 if (priv->pixmap)
2066 g_object_unref (priv->pixmap);
2067
2068 priv->pixmap = gdk_pixmap_new (
2069 widget->window,
2070 widget->allocation.width + EXTRA_BORDER * 2,
2071 widget->allocation.height + EXTRA_BORDER * 2,
2072 -1);
2073
2074 #ifdef ENABLE_OSD
2075 /* the osd needs some references to map internal objects */
2076 if(priv->osd)
2077 {
2078 priv->osd->pixmap = priv->pixmap;
2079 priv->osd->widget = widget;
2080 }
2081 #endif
2082
2083 /* and gc, used for clipping (I think......) */
2084 if(priv->gc_map)
2085 g_object_unref(priv->gc_map);
2086
2087 priv->gc_map = gdk_gc_new(priv->pixmap);
2088
2089 osm_gps_map_map_redraw(OSM_GPS_MAP(widget));
2090
2091 return FALSE;
2092 }
2093
2094 static gboolean
2095 osm_gps_map_expose (GtkWidget *widget, GdkEventExpose *event)
2096 {
2097 OsmGpsMapPrivate *priv = OSM_GPS_MAP_PRIVATE(widget);
2098
2099 gdk_draw_drawable (
2100 widget->window,
2101 widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
2102 priv->pixmap,
2103 0,0,
2104 priv->drag_mouse_dx - EXTRA_BORDER,
2105 priv->drag_mouse_dy - EXTRA_BORDER,
2106 -1,-1);
2107
2108 //Paint white outside of the map if dragging. Its less
2109 //ugly than painting the corrupted map
2110 if(priv->drag_mouse_dx>EXTRA_BORDER) {
2111 gdk_draw_rectangle (
2112 widget->window,
2113 widget->style->white_gc,
2114 TRUE,
2115 0, 0,
2116 priv->drag_mouse_dx - EXTRA_BORDER,
2117 widget->allocation.height);
2118 }
2119 else if (-priv->drag_mouse_dx > EXTRA_BORDER)
2120 {
2121 gdk_draw_rectangle (
2122 widget->window,
2123 widget->style->white_gc,
2124 TRUE,
2125 priv->drag_mouse_dx + widget->allocation.width + EXTRA_BORDER, 0,
2126 -priv->drag_mouse_dx - EXTRA_BORDER,
2127 widget->allocation.height);
2128 }
2129
2130 if (priv->drag_mouse_dy>EXTRA_BORDER) {
2131 gdk_draw_rectangle (
2132 widget->window,
2133 widget->style->white_gc,
2134 TRUE,
2135 0, 0,
2136 widget->allocation.width,
2137 priv->drag_mouse_dy - EXTRA_BORDER);
2138 }
2139 else if (-priv->drag_mouse_dy > EXTRA_BORDER)
2140 {
2141 gdk_draw_rectangle (
2142 widget->window,
2143 widget->style->white_gc,
2144 TRUE,
2145 0, priv->drag_mouse_dy + widget->allocation.height + EXTRA_BORDER,
2146 widget->allocation.width,
2147 -priv->drag_mouse_dy - EXTRA_BORDER);
2148 }
2149 #if 0
2150 if(!priv->dragging)
2151 gdk_draw_drawable (
2152 widget->window,
2153 widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
2154 priv->pixmap,
2155 event->area.x + EXTRA_BORDER,
2156 event->area.y + EXTRA_BORDER,
2157 event->area.x, event->area.y,
2158 event->area.width, event->area.height);
2159 #endif
2160 return FALSE;
2161 }
2162
2163 static void
2164 osm_gps_map_class_init (OsmGpsMapClass *klass)
2165 {
2166 GObjectClass* object_class = G_OBJECT_CLASS (klass);
2167 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
2168
2169 g_type_class_add_private (klass, sizeof (OsmGpsMapPrivate));
2170
2171 object_class->dispose = osm_gps_map_dispose;
2172 object_class->finalize = osm_gps_map_finalize;
2173 object_class->constructor = osm_gps_map_constructor;
2174 object_class->set_property = osm_gps_map_set_property;
2175 object_class->get_property = osm_gps_map_get_property;
2176
2177 widget_class->expose_event = osm_gps_map_expose;
2178 widget_class->configure_event = osm_gps_map_configure;
2179 widget_class->button_press_event = osm_gps_map_button_press;
2180 widget_class->button_release_event = osm_gps_map_button_release;
2181 widget_class->motion_notify_event = osm_gps_map_motion_notify;
2182 widget_class->scroll_event = osm_gps_map_scroll_event;
2183
2184 g_object_class_install_property (object_class,
2185 PROP_AUTO_CENTER,
2186 g_param_spec_boolean ("auto-center",
2187 "auto center",
2188 "map auto center",
2189 TRUE,
2190 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2191
2192 g_object_class_install_property (object_class,
2193 PROP_RECORD_TRIP_HISTORY,
2194 g_param_spec_boolean ("record-trip-history",
2195 "record trip history",
2196 "should all gps points be recorded in a trip history",
2197 TRUE,
2198 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2199
2200 g_object_class_install_property (object_class,
2201 PROP_SHOW_TRIP_HISTORY,
2202 g_param_spec_boolean ("show-trip-history",
2203 "show trip history",
2204 "should the recorded trip history be shown on the map",
2205 TRUE,
2206 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2207
2208 g_object_class_install_property (object_class,
2209 PROP_AUTO_DOWNLOAD,
2210 g_param_spec_boolean ("auto-download",
2211 "auto download",
2212 "map auto download",
2213 TRUE,
2214 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2215
2216 g_object_class_install_property (object_class,
2217 PROP_REPO_URI,
2218 g_param_spec_string ("repo-uri",
2219 "repo uri",
2220 "map source tile repository uri",
2221 OSM_REPO_URI,
2222 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2223
2224 g_object_class_install_property (object_class,
2225 PROP_PROXY_URI,
2226 g_param_spec_string ("proxy-uri",
2227 "proxy uri",
2228 "http proxy uri on NULL",
2229 NULL,
2230 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2231
2232 g_object_class_install_property (object_class,
2233 PROP_TILE_CACHE_DIR,
2234 g_param_spec_string ("tile-cache",
2235 "tile cache",
2236 "osm local tile cache dir",
2237 NULL,
2238 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2239
2240 g_object_class_install_property (object_class,
2241 PROP_TILE_CACHE_DIR_IS_FULL_PATH,
2242 g_param_spec_boolean ("tile-cache-is-full-path",
2243 "tile cache is full path",
2244 "if true, the path passed to tile-cache is interpreted as the full cache path",
2245 FALSE,
2246 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2247
2248 g_object_class_install_property (object_class,
2249 PROP_ZOOM,
2250 g_param_spec_int ("zoom",
2251 "zoom",
2252 "zoom level",
2253 MIN_ZOOM, /* minimum property value */
2254 MAX_ZOOM, /* maximum property value */
2255 3,
2256 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2257
2258 g_object_class_install_property (object_class,
2259 PROP_MAX_ZOOM,
2260 g_param_spec_int ("max-zoom",
2261 "max zoom",
2262 "maximum zoom level",
2263 MIN_ZOOM, /* minimum property value */
2264 MAX_ZOOM, /* maximum property value */
2265 OSM_MAX_ZOOM,
2266 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2267
2268 g_object_class_install_property (object_class,
2269 PROP_MIN_ZOOM,
2270 g_param_spec_int ("min-zoom",
2271 "min zoom",
2272 "minimum zoom level",
2273 MIN_ZOOM, /* minimum property value */
2274 MAX_ZOOM, /* maximum property value */
2275 OSM_MIN_ZOOM,
2276 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2277
2278 g_object_class_install_property (object_class,
2279 PROP_LATITUDE,
2280 g_param_spec_float ("latitude",
2281 "latitude",
2282 "latitude in degrees",
2283 -90.0, /* minimum property value */
2284 90.0, /* maximum property value */
2285 0,
2286 G_PARAM_READABLE));
2287
2288 g_object_class_install_property (object_class,
2289 PROP_LONGITUDE,
2290 g_param_spec_float ("longitude",
2291 "longitude",
2292 "longitude in degrees",
2293 -180.0, /* minimum property value */
2294 180.0, /* maximum property value */
2295 0,
2296 G_PARAM_READABLE));
2297
2298 g_object_class_install_property (object_class,
2299 PROP_MAP_X,
2300 g_param_spec_int ("map-x",
2301 "map-x",
2302 "initial map x location",
2303 G_MININT, /* minimum property value */
2304 G_MAXINT, /* maximum property value */
2305 890,
2306 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2307
2308 g_object_class_install_property (object_class,
2309 PROP_MAP_Y,
2310 g_param_spec_int ("map-y",
2311 "map-y",
2312 "initial map y location",
2313 G_MININT, /* minimum property value */
2314 G_MAXINT, /* maximum property value */
2315 515,
2316 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2317
2318 g_object_class_install_property (object_class,
2319 PROP_TILES_QUEUED,
2320 g_param_spec_int ("tiles-queued",
2321 "tiles-queued",
2322 "number of tiles currently waiting to download",
2323 G_MININT, /* minimum property value */
2324 G_MAXINT, /* maximum property value */
2325 0,
2326 G_PARAM_READABLE));
2327
2328 g_object_class_install_property (object_class,
2329 PROP_GPS_TRACK_WIDTH,
2330 g_param_spec_int ("gps-track-width",
2331 "gps-track-width",
2332 "width of the lines drawn for the gps track",
2333 1, /* minimum property value */
2334 G_MAXINT, /* maximum property value */
2335 4,
2336 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2337
2338 g_object_class_install_property (object_class,
2339 PROP_GPS_POINT_R1,
2340 g_param_spec_int ("gps-track-point-radius",
2341 "gps-track-point-radius",
2342 "radius of the gps point inner circle",
2343 0, /* minimum property value */
2344 G_MAXINT, /* maximum property value */
2345 10,
2346 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2347
2348 g_object_class_install_property (object_class,
2349 PROP_GPS_POINT_R2,
2350 g_param_spec_int ("gps-track-highlight-radius",
2351 "gps-track-highlight-radius",
2352 "radius of the gps point highlight circle",
2353 0, /* minimum property value */
2354 G_MAXINT, /* maximum property value */
2355 20,
2356 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT));
2357
2358 g_object_class_install_property (object_class,
2359 PROP_MAP_SOURCE,
2360 g_param_spec_int ("map-source",
2361 "map source",
2362 "map source ID",
2363 -1, /* minimum property value */
2364 G_MAXINT, /* maximum property value */
2365 -1,
2366 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2367
2368 g_object_class_install_property (object_class,
2369 PROP_IMAGE_FORMAT,
2370 g_param_spec_string ("image-format",
2371 "image format",
2372 "map source tile repository image format (jpg, png)",
2373 OSM_IMAGE_FORMAT,
2374 G_PARAM_READABLE | G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
2375 }
2376
2377 const char*
2378 osm_gps_map_source_get_friendly_name(OsmGpsMapSource_t source)
2379 {
2380 switch(source)
2381 {
2382 case OSM_GPS_MAP_SOURCE_NULL:
2383 return "None";
2384 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP:
2385 return "OpenStreetMap";
2386 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP_RENDERER:
2387 return "OpenStreetMap Renderer";
2388 case OSM_GPS_MAP_SOURCE_OPENAERIALMAP:
2389 return "OpenAerialMap";
2390 case OSM_GPS_MAP_SOURCE_MAPS_FOR_FREE:
2391 return "Maps-For-Free";
2392 case OSM_GPS_MAP_SOURCE_GOOGLE_STREET:
2393 return "Google Maps";
2394 case OSM_GPS_MAP_SOURCE_GOOGLE_SATELLITE:
2395 return "Google Satellite";
2396 case OSM_GPS_MAP_SOURCE_GOOGLE_HYBRID:
2397 return "Google Hybrid";
2398 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_STREET:
2399 return "Virtual Earth";
2400 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE:
2401 return "Virtual Earth Satellite";
2402 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_HYBRID:
2403 return "Virtual Earth Hybrid";
2404 case OSM_GPS_MAP_SOURCE_YAHOO_STREET:
2405 return "Yahoo Maps";
2406 case OSM_GPS_MAP_SOURCE_YAHOO_SATELLITE:
2407 return "Yahoo Satellite";
2408 case OSM_GPS_MAP_SOURCE_YAHOO_HYBRID:
2409 return "Yahoo Hybrid";
2410 default:
2411 return NULL;
2412 }
2413 return NULL;
2414 }
2415
2416 //http://www.internettablettalk.com/forums/showthread.php?t=5209
2417 //https://garage.maemo.org/plugins/scmsvn/viewcvs.php/trunk/src/maps.c?root=maemo-mapper&view=markup
2418 //http://www.ponies.me.uk/maps/GoogleTileUtils.java
2419 //http://www.mgmaps.com/cache/MapTileCacher.perl
2420 const char*
2421 osm_gps_map_source_get_repo_uri(OsmGpsMapSource_t source)
2422 {
2423 switch(source)
2424 {
2425 case OSM_GPS_MAP_SOURCE_NULL:
2426 return "none://";
2427 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP:
2428 return OSM_REPO_URI;
2429 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP_RENDERER:
2430 return "http://tah.openstreetmap.org/Tiles/tile/#Z/#X/#Y.png";
2431 case OSM_GPS_MAP_SOURCE_OPENAERIALMAP:
2432 return "http://tile.openaerialmap.org/tiles/1.0.0/openaerialmap-900913/#Z/#X/#Y.jpg";
2433 case OSM_GPS_MAP_SOURCE_MAPS_FOR_FREE:
2434 return "http://maps-for-free.com/layer/relief/z#Z/row#Y/#Z_#X-#Y.jpg";
2435 case OSM_GPS_MAP_SOURCE_GOOGLE_STREET:
2436 return "http://mt#R.google.com/vt/v=w2.97&x=#X&y=#Y&z=#Z";
2437 case OSM_GPS_MAP_SOURCE_GOOGLE_SATELLITE:
2438 return "http://khm#R.google.com/kh?n=404&v=3&t=#Q";
2439 case OSM_GPS_MAP_SOURCE_GOOGLE_HYBRID:
2440 return NULL; /* No longer working "http://mt#R.google.com/mt?n=404&v=w2t.99&x=#X&y=#Y&zoom=#S" */
2441 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_STREET:
2442 return "http://a#R.ortho.tiles.virtualearth.net/tiles/r#W.jpeg?g=50";
2443 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE:
2444 return "http://a#R.ortho.tiles.virtualearth.net/tiles/a#W.jpeg?g=50";
2445 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_HYBRID:
2446 return "http://a#R.ortho.tiles.virtualearth.net/tiles/h#W.jpeg?g=50";
2447 case OSM_GPS_MAP_SOURCE_YAHOO_STREET:
2448 case OSM_GPS_MAP_SOURCE_YAHOO_SATELLITE:
2449 case OSM_GPS_MAP_SOURCE_YAHOO_HYBRID:
2450 /* TODO: Implement signed Y, aka U
2451 * http://us.maps3.yimg.com/aerial.maps.yimg.com/ximg?v=1.7&t=a&s=256&x=%d&y=%-d&z=%d
2452 * x = tilex,
2453 * y = (1 << (MAX_ZOOM - zoom)) - tiley - 1,
2454 * z = zoom - (MAX_ZOOM - 17));
2455 */
2456 return NULL;
2457 default:
2458 return NULL;
2459 }
2460 return NULL;
2461 }
2462
2463 const char *
2464 osm_gps_map_source_get_image_format(OsmGpsMapSource_t source)
2465 {
2466 switch(source) {
2467 case OSM_GPS_MAP_SOURCE_NULL:
2468 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP:
2469 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP_RENDERER:
2470 return "png";
2471 case OSM_GPS_MAP_SOURCE_OPENAERIALMAP:
2472 case OSM_GPS_MAP_SOURCE_GOOGLE_STREET:
2473 case OSM_GPS_MAP_SOURCE_GOOGLE_HYBRID:
2474 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_STREET:
2475 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE:
2476 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_HYBRID:
2477 case OSM_GPS_MAP_SOURCE_YAHOO_STREET:
2478 case OSM_GPS_MAP_SOURCE_YAHOO_SATELLITE:
2479 case OSM_GPS_MAP_SOURCE_YAHOO_HYBRID:
2480 case OSM_GPS_MAP_SOURCE_MAPS_FOR_FREE:
2481 case OSM_GPS_MAP_SOURCE_GOOGLE_SATELLITE:
2482 return "jpg";
2483 default:
2484 return "bin";
2485 }
2486 return "bin";
2487 }
2488
2489
2490 int
2491 osm_gps_map_source_get_min_zoom(OsmGpsMapSource_t source)
2492 {
2493 return 1;
2494 }
2495
2496 int
2497 osm_gps_map_source_get_max_zoom(OsmGpsMapSource_t source)
2498 {
2499 switch(source) {
2500 case OSM_GPS_MAP_SOURCE_NULL:
2501 return 18;
2502 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP:
2503 return OSM_MAX_ZOOM;
2504 case OSM_GPS_MAP_SOURCE_OPENSTREETMAP_RENDERER:
2505 case OSM_GPS_MAP_SOURCE_OPENAERIALMAP:
2506 case OSM_GPS_MAP_SOURCE_GOOGLE_STREET:
2507 case OSM_GPS_MAP_SOURCE_GOOGLE_HYBRID:
2508 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_STREET:
2509 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_SATELLITE:
2510 case OSM_GPS_MAP_SOURCE_VIRTUAL_EARTH_HYBRID:
2511 case OSM_GPS_MAP_SOURCE_YAHOO_STREET:
2512 case OSM_GPS_MAP_SOURCE_YAHOO_SATELLITE:
2513 case OSM_GPS_MAP_SOURCE_YAHOO_HYBRID:
2514 return 17;
2515 case OSM_GPS_MAP_SOURCE_MAPS_FOR_FREE:
2516 return 11;
2517 case OSM_GPS_MAP_SOURCE_GOOGLE_SATELLITE:
2518 return 18;
2519 default:
2520 return 17;
2521 }
2522 return 17;
2523 }
2524
2525 void
2526 osm_gps_map_download_maps (OsmGpsMap *map, coord_t *pt1, coord_t *pt2, int zoom_start, int zoom_end)
2527 {
2528 int i,j,zoom,num_tiles;
2529 OsmGpsMapPrivate *priv = map->priv;
2530
2531 if (pt1 && pt2)
2532 {
2533 gchar *filename;
2534 num_tiles = 0;
2535 zoom_end = CLAMP(zoom_end, priv->min_zoom, priv->max_zoom);
2536 g_debug("Download maps: z:%d->%d",zoom_start, zoom_end);
2537
2538 for(zoom=zoom_start; zoom<=zoom_end; zoom++)
2539 {
2540 int x1,y1,x2,y2;
2541
2542 x1 = (int)floor((float)lon2pixel(zoom, pt1->rlon) / (float)TILESIZE);
2543 y1 = (int)floor((float)lat2pixel(zoom, pt1->rlat) / (float)TILESIZE);
2544
2545 x2 = (int)floor((float)lon2pixel(zoom, pt2->rlon) / (float)TILESIZE);
2546 y2 = (int)floor((float)lat2pixel(zoom, pt2->rlat) / (float)TILESIZE);
2547
2548 // loop x1-x2
2549 for(i=x1; i<=x2; i++)
2550 {
2551 // loop y1 - y2
2552 for(j=y1; j<=y2; j++)
2553 {
2554 // x = i, y = j
2555 filename = g_strdup_printf("%s%c%d%c%d%c%d.%s",
2556 priv->cache_dir, G_DIR_SEPARATOR,
2557 zoom, G_DIR_SEPARATOR,
2558 i, G_DIR_SEPARATOR,
2559 j,
2560 priv->image_format);
2561 if (!g_file_test(filename, G_FILE_TEST_EXISTS))
2562 {
2563 osm_gps_map_download_tile(map, zoom, i, j, FALSE);
2564 num_tiles++;
2565 }
2566 g_free(filename);
2567 }
2568 }
2569 g_debug("DL @Z:%d = %d tiles",zoom,num_tiles);
2570 }
2571 }
2572 }
2573
2574 void
2575 osm_gps_map_get_bbox (OsmGpsMap *map, coord_t *pt1, coord_t *pt2)
2576 {
2577 OsmGpsMapPrivate *priv = map->priv;
2578
2579 if (pt1 && pt2) {
2580 pt1->rlat = pixel2lat(priv->map_zoom, priv->map_y);
2581 pt1->rlon = pixel2lon(priv->map_zoom, priv->map_x);
2582 pt2->rlat = pixel2lat(priv->map_zoom, priv->map_y + GTK_WIDGET(map)->allocation.height);
2583 pt2->rlon = pixel2lon(priv->map_zoom, priv->map_x + GTK_WIDGET(map)->allocation.width);
2584
2585 g_debug("BBOX: %f %f %f %f", pt1->rlat, pt1->rlon, pt2->rlat, pt2->rlon);
2586 }
2587 }
2588
2589 void
2590 osm_gps_map_set_mapcenter (OsmGpsMap *map, float latitude, float longitude, int zoom)
2591 {
2592 osm_gps_map_set_center (map, latitude, longitude);
2593 osm_gps_map_set_zoom (map, zoom);
2594 }
2595
2596 void
2597 osm_gps_map_set_center (OsmGpsMap *map, float latitude, float longitude)
2598 {
2599 int pixel_x, pixel_y;
2600 OsmGpsMapPrivate *priv;
2601
2602 g_return_if_fail (OSM_IS_GPS_MAP (map));
2603 priv = map->priv;
2604
2605 priv->center_rlat = deg2rad(latitude);
2606 priv->center_rlon = deg2rad(longitude);
2607 priv->center_coord_set = TRUE;
2608
2609 // pixel_x,y, offsets
2610 pixel_x = lon2pixel(priv->map_zoom, priv->center_rlon);
2611 pixel_y = lat2pixel(priv->map_zoom, priv->center_rlat);
2612
2613 priv->map_x = pixel_x - GTK_WIDGET(map)->allocation.width/2;
2614 priv->map_y = pixel_y - GTK_WIDGET(map)->allocation.height/2;
2615
2616 osm_gps_map_map_redraw_idle(map);
2617 }
2618
2619 int
2620 osm_gps_map_set_zoom (OsmGpsMap *map, int zoom)
2621 {
2622 int zoom_old;
2623 double factor = 0.0;
2624 int width_center, height_center;
2625 OsmGpsMapPrivate *priv;
2626
2627 g_return_val_if_fail (OSM_IS_GPS_MAP (map), 0);
2628 priv = map->priv;
2629
2630 if (zoom != priv->map_zoom)
2631 {
2632 width_center = GTK_WIDGET(map)->allocation.width / 2;
2633 height_center = GTK_WIDGET(map)->allocation.height / 2;
2634
2635 zoom_old = priv->map_zoom;
2636 //constrain zoom min_zoom -> max_zoom
2637 priv->map_zoom = CLAMP(zoom, priv->min_zoom, priv->max_zoom);
2638
2639 if (priv->center_coord_set)
2640 {
2641 priv->map_x = lon2pixel(priv->map_zoom, priv->center_rlon) - width_center;
2642 priv->map_y = lat2pixel(priv->map_zoom, priv->center_rlat) - height_center;
2643 }
2644 else
2645 {
2646 factor = exp(priv->map_zoom * M_LN2)/exp(zoom_old * M_LN2);
2647 priv->map_x = ((priv->map_x + width_center) * factor) - width_center;
2648 priv->map_y = ((priv->map_y + height_center) * factor) - height_center;
2649 }
2650
2651 g_debug("Zoom changed from %d to %d factor:%f x:%d",
2652 zoom_old, priv->map_zoom, factor, priv->map_x);
2653
2654 osm_gps_map_map_redraw_idle(map);
2655 }
2656 return priv->map_zoom;
2657 }
2658
2659 void
2660 osm_gps_map_add_track (OsmGpsMap *map, GSList *track)
2661 {
2662 OsmGpsMapPrivate *priv;
2663
2664 g_return_if_fail (OSM_IS_GPS_MAP (map));
2665 priv = map->priv;
2666
2667 if (track) {
2668 priv->tracks = g_slist_append(priv->tracks, track);
2669 osm_gps_map_map_redraw_idle(map);
2670 }
2671 }
2672
2673 void
2674 osm_gps_map_clear_tracks (OsmGpsMap *map)
2675 {
2676 g_return_if_fail (OSM_IS_GPS_MAP (map));
2677
2678 osm_gps_map_free_tracks(map);
2679 osm_gps_map_map_redraw_idle(map);
2680 }
2681
2682 void
2683 osm_gps_map_add_image (OsmGpsMap *map, float latitude, float longitude, GdkPixbuf *image)
2684 {
2685 g_return_if_fail (OSM_IS_GPS_MAP (map));
2686
2687 if (image) {
2688 OsmGpsMapPrivate *priv = map->priv;
2689 image_t *im;
2690
2691 //cache w/h for speed, and add image to list
2692 im = g_new0(image_t,1);
2693 im->w = gdk_pixbuf_get_width(image);
2694 im->h = gdk_pixbuf_get_height(image);
2695 im->pt.rlat = deg2rad(latitude);
2696 im->pt.rlon = deg2rad(longitude);
2697
2698 g_object_ref(image);
2699 im->image = image;
2700
2701 priv->images = g_slist_append(priv->images, im);
2702
2703 osm_gps_map_map_redraw_idle(map);
2704 }
2705 }
2706
2707 gboolean
2708 osm_gps_map_remove_image (OsmGpsMap *map, GdkPixbuf *image)
2709 {
2710 OsmGpsMapPrivate *priv = map->priv;
2711 if (priv->images) {
2712 GSList *list;
2713 for(list = priv->images; list != NULL; list = list->next)
2714 {
2715 image_t *im = list->data;
2716 if (im->image == image)
2717 {
2718 priv->images = g_slist_remove_link(priv->images, list);
2719 g_object_unref(im->image);
2720 g_free(im);
2721 osm_gps_map_map_redraw_idle(map);
2722 return TRUE;
2723 }
2724 }
2725 }
2726 return FALSE;
2727 }
2728
2729 void
2730 osm_gps_map_clear_images (OsmGpsMap *map)
2731 {
2732 g_return_if_fail (OSM_IS_GPS_MAP (map));
2733
2734 osm_gps_map_free_images(map);
2735 osm_gps_map_map_redraw_idle(map);
2736 }
2737
2738 void
2739 osm_gps_map_osd_speed (OsmGpsMap *map, float speed)
2740 {
2741 OsmGpsMapPrivate *priv;
2742
2743 PangoContext *context = NULL;
2744 PangoLayout *layout = NULL;
2745 PangoFontDescription *desc = NULL;
2746
2747 GdkColor color;
2748 GdkGC *gc;
2749
2750 gchar *buffer;
2751 //static int x = 10, y = 10;
2752 static int width = 0, height = 0;
2753
2754 g_return_if_fail (OSM_IS_GPS_MAP (map));
2755 priv = map->priv;
2756
2757 buffer = g_strdup_printf("%.0f", speed);
2758
2759 /* pango initialisation */
2760 context = gtk_widget_get_pango_context (GTK_WIDGET(map));
2761 layout = pango_layout_new (context);
2762 desc = pango_font_description_new();
2763
2764 pango_font_description_set_size (desc, 40 * PANGO_SCALE);
2765 pango_layout_set_font_description (layout, desc);
2766 pango_layout_set_text (layout, buffer, strlen(buffer));
2767
2768 gc = gdk_gc_new (GTK_WIDGET(map)->window);
2769
2770 color.red = (0 > 50) ? 0xffff : 0;
2771 color.green = 0;
2772 color.blue = 0;
2773
2774 gdk_gc_set_rgb_fg_color (gc, &color);
2775
2776 /* faster / less flicker alternative:*/
2777 gdk_draw_drawable (
2778 GTK_WIDGET(map)->window,
2779 GTK_WIDGET(map)->style->fg_gc[GTK_WIDGET_STATE(map)],
2780 priv->pixmap,
2781 0,0,
2782 0,0,
2783 width+10,width+10);
2784
2785 gdk_draw_layout(GTK_WIDGET(map)->window,
2786 gc,
2787 0, 0,
2788 layout);
2789
2790 /* set width and height */
2791 pango_layout_get_pixel_size(layout, &width, &height);
2792
2793 g_free(buffer);
2794 pango_font_description_free (desc);
2795 g_object_unref (layout);
2796 g_object_unref (gc);
2797 }
2798
2799 void
2800 osm_gps_map_draw_gps (OsmGpsMap *map, float latitude, float longitude, float heading)
2801 {
2802 int pixel_x, pixel_y;
2803 OsmGpsMapPrivate *priv;
2804
2805 g_return_if_fail (OSM_IS_GPS_MAP (map));
2806 priv = map->priv;
2807
2808 priv->gps->rlat = deg2rad(latitude);
2809 priv->gps->rlon = deg2rad(longitude);
2810 priv->gps_valid = TRUE;
2811
2812 // pixel_x,y, offsets
2813 pixel_x = lon2pixel(priv->map_zoom, priv->gps->rlon);
2814 pixel_y = lat2pixel(priv->map_zoom, priv->gps->rlat);
2815
2816 //If trip marker add to list of gps points.
2817 if (priv->record_trip_history) {
2818 coord_t *tp = g_new0(coord_t,1);
2819 tp->rlat = priv->gps->rlat;
2820 tp->rlon = priv->gps->rlon;
2821 priv->trip_history = g_slist_append(priv->trip_history, tp);
2822 }
2823
2824 // dont draw anything if we are dragging
2825 if (priv->dragging) {
2826 g_debug("Dragging");
2827 return;
2828 }
2829
2830 //Automatically center the map if the track approaches the edge
2831 if(priv->map_auto_center) {
2832 int x = pixel_x - priv->map_x;
2833 int y = pixel_y - priv->map_y;
2834 int width = GTK_WIDGET(map)->allocation.width;
2835 int height = GTK_WIDGET(map)->allocation.height;
2836 if( x < (width/2 - width/8) || x > (width/2 + width/8) ||
2837 y < (height/2 - height/8) || y > (height/2 + height/8)) {
2838
2839 priv->map_x = pixel_x - GTK_WIDGET(map)->allocation.width/2;
2840 priv->map_y = pixel_y - GTK_WIDGET(map)->allocation.height/2;
2841 priv->center_coord_set = FALSE;
2842 }
2843 }
2844
2845 // this redraws the map (including the gps track, and adjusts the
2846 // map center if it was changed
2847 osm_gps_map_map_redraw_idle(map);
2848 }
2849
2850 void
2851 osm_gps_map_clear_gps (OsmGpsMap *map)
2852 {
2853 osm_gps_map_free_trip(map);
2854 osm_gps_map_map_redraw_idle(map);
2855 }
2856
2857 coord_t
2858 osm_gps_map_get_co_ordinates (OsmGpsMap *map, int pixel_x, int pixel_y)
2859 {
2860 coord_t coord;
2861 OsmGpsMapPrivate *priv = map->priv;
2862
2863 coord.rlat = pixel2lat(priv->map_zoom, priv->map_y + pixel_y);
2864 coord.rlon = pixel2lon(priv->map_zoom, priv->map_x + pixel_x);
2865 return coord;
2866 }
2867
2868 GtkWidget *
2869 osm_gps_map_new (void)
2870 {
2871 return g_object_new (OSM_TYPE_GPS_MAP, NULL);
2872 }
2873
2874 void
2875 osm_gps_map_screen_to_geographic (OsmGpsMap *map, gint pixel_x, gint pixel_y,
2876 gfloat *latitude, gfloat *longitude)
2877 {
2878 OsmGpsMapPrivate *priv;
2879
2880 g_return_if_fail (OSM_IS_GPS_MAP (map));
2881 priv = map->priv;
2882
2883 if (latitude)
2884 *latitude = rad2deg(pixel2lat(priv->map_zoom, priv->map_y + pixel_y));
2885 if (longitude)
2886 *longitude = rad2deg(pixel2lon(priv->map_zoom, priv->map_x + pixel_x));
2887 }
2888
2889 void
2890 osm_gps_map_geographic_to_screen (OsmGpsMap *map,
2891 gfloat latitude, gfloat longitude,
2892 gint *pixel_x, gint *pixel_y)
2893 {
2894 OsmGpsMapPrivate *priv;
2895
2896 g_return_if_fail (OSM_IS_GPS_MAP (map));
2897 priv = map->priv;
2898
2899 if (pixel_x)
2900 *pixel_x = lon2pixel(priv->map_zoom, deg2rad(longitude)) - priv->map_x;
2901 if (pixel_y)
2902 *pixel_y = lat2pixel(priv->map_zoom, deg2rad(latitude)) - priv->map_y;
2903 }
2904
2905 void
2906 osm_gps_map_scroll (OsmGpsMap *map, gint dx, gint dy)
2907 {
2908 OsmGpsMapPrivate *priv;
2909
2910 g_return_if_fail (OSM_IS_GPS_MAP (map));
2911 priv = map->priv;
2912
2913 priv->center_coord_set = FALSE;
2914 priv->map_x += dx;
2915 priv->map_y += dy;
2916
2917 osm_gps_map_map_redraw_idle (map);
2918 }
2919
2920 float
2921 osm_gps_map_get_scale(OsmGpsMap *map)
2922 {
2923 OsmGpsMapPrivate *priv;
2924
2925 g_return_val_if_fail (OSM_IS_GPS_MAP (map), OSM_NAN);
2926 priv = map->priv;
2927
2928 return osm_gps_map_get_scale_at_point(priv->map_zoom, priv->center_rlat, priv->center_rlon);
2929 }
2930
2931 #ifdef ENABLE_BALLOON
2932 void
2933 osm_gps_map_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
2934 OsmGpsMapBalloonCallback cb, gpointer data)
2935 {
2936 OsmGpsMapPrivate *priv;
2937
2938 /* remove and previously installed balloon */
2939 osm_gps_map_clear_balloon (map);
2940
2941 g_return_if_fail (OSM_IS_GPS_MAP (map));
2942 priv = map->priv;
2943
2944 priv->balloon.coo->rlat = deg2rad(latitude);
2945 priv->balloon.coo->rlon = deg2rad(longitude);
2946 priv->balloon.valid = TRUE;
2947
2948 priv->balloon.cb = cb;
2949 priv->balloon.data = data;
2950
2951 // this redraws the map
2952 osm_gps_map_map_redraw_idle(map);
2953 }
2954
2955 void
2956 osm_gps_map_clear_balloon (OsmGpsMap *map)
2957 {
2958 OsmGpsMapPrivate *priv;
2959
2960 g_return_if_fail (OSM_IS_GPS_MAP (map));
2961 priv = map->priv;
2962
2963 priv->balloon.valid = FALSE;
2964
2965 osm_gps_map_map_redraw_idle(map);
2966 }
2967 #endif
2968
2969 #ifdef ENABLE_OSD
2970
2971 void
2972 osm_gps_map_redraw (OsmGpsMap *map)
2973 {
2974 osm_gps_map_map_redraw_idle(map);
2975 }
2976
2977 osm_gps_map_osd_t *osm_gps_map_osd_get(OsmGpsMap *map) {
2978 g_return_val_if_fail (OSM_IS_GPS_MAP (map), NULL);
2979 return map->priv->osd;
2980 }
2981
2982 void osm_gps_map_register_osd(OsmGpsMap *map, osm_gps_map_osd_t *osd) {
2983 OsmGpsMapPrivate *priv;
2984
2985 g_return_if_fail (OSM_IS_GPS_MAP (map));
2986
2987 priv = map->priv;
2988 g_return_if_fail (!priv->osd);
2989
2990 priv->osd = osd;
2991 }
2992
2993 #endif