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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 | * Copyright (C) Till Harbaum 2009 <till@harbaum.org> |
5 | * |
6 | * osm-gps-map is free software: you can redistribute it and/or modify it |
7 | * under the terms of the GNU General Public License as published by the |
8 | * Free Software Foundation, either version 3 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * osm-gps-map is distributed in the hope that it will be useful, but |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
14 | * See the GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program. If not, see <http://www.gnu.org/licenses/>. |
18 | */ |
19 | |
20 | #include "config.h" |
21 | #include <stdlib.h> // abs |
22 | #include <string.h> |
23 | #include <math.h> // M_PI/cos() |
24 | |
25 | /* parameters that can be overwritten from the config file: */ |
26 | /* OSD_DIAMETER */ |
27 | /* OSD_X, OSD_Y */ |
28 | |
29 | #ifndef USE_CAIRO |
30 | #error "OSD control display lacks a non-cairo implementation!" |
31 | #endif |
32 | |
33 | #include <cairo.h> |
34 | |
35 | #include "osm-gps-map.h" |
36 | #include "converter.h" |
37 | #include "osm-gps-map-osd-classic.h" |
38 | |
39 | //the osd controls |
40 | typedef struct { |
41 | /* the offscreen representation of the OSD */ |
42 | struct { |
43 | cairo_surface_t *surface; |
44 | gboolean rendered; |
45 | #ifdef OSD_GPS_BUTTON |
46 | gboolean gps_enabled; |
47 | #endif |
48 | } controls; |
49 | |
50 | #ifdef OSD_BALLOON |
51 | //a balloon with additional info |
52 | struct { |
53 | cairo_surface_t *surface; |
54 | int orientation, offset_x, offset_y; |
55 | |
56 | gboolean just_created; |
57 | float lat, lon; |
58 | OsmGpsMapRect_t rect; |
59 | |
60 | /* function called to have the user app draw the contents */ |
61 | OsmGpsMapBalloonCallback cb; |
62 | gpointer data; |
63 | } balloon; |
64 | #endif |
65 | |
66 | #ifdef OSD_SCALE |
67 | struct { |
68 | cairo_surface_t *surface; |
69 | int zoom; |
70 | } scale; |
71 | #endif |
72 | |
73 | #ifdef OSD_CROSSHAIR |
74 | struct { |
75 | cairo_surface_t *surface; |
76 | gboolean rendered; |
77 | } crosshair; |
78 | #endif |
79 | |
80 | #ifdef OSD_NAV |
81 | struct { |
82 | cairo_surface_t *surface; |
83 | float lat, lon; |
84 | char *name; |
85 | gboolean imperial; // display distance imperial/metric |
86 | } nav; |
87 | #endif |
88 | |
89 | #ifdef OSD_COORDINATES |
90 | struct { |
91 | cairo_surface_t *surface; |
92 | float lat, lon; |
93 | } coordinates; |
94 | #endif |
95 | |
96 | #ifdef OSD_SOURCE_SEL |
97 | struct { |
98 | /* values to handle the "source" menu */ |
99 | cairo_surface_t *surface; |
100 | gboolean expanded; |
101 | gint shift, dir, count; |
102 | gint handler_id; |
103 | gint width, height; |
104 | gboolean rendered; |
105 | } source_sel; |
106 | #endif |
107 | |
108 | } osd_priv_t; |
109 | |
110 | #ifdef OSD_BALLOON |
111 | /* most visual effects are hardcoded by now, but may be made */ |
112 | /* available via properties later */ |
113 | #ifndef BALLOON_AREA_WIDTH |
114 | #define BALLOON_AREA_WIDTH 290 |
115 | #endif |
116 | #ifndef BALLOON_AREA_HEIGHT |
117 | #define BALLOON_AREA_HEIGHT 75 |
118 | #endif |
119 | #ifndef BALLOON_CORNER_RADIUS |
120 | #define BALLOON_CORNER_RADIUS 10 |
121 | #endif |
122 | |
123 | #define BALLOON_BORDER (BALLOON_CORNER_RADIUS/2) |
124 | #define BALLOON_WIDTH (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER) |
125 | #define BALLOON_HEIGHT (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER) |
126 | #define BALLOON_TRANSPARENCY 0.8 |
127 | #define POINTER_HEIGHT 20 |
128 | #define POINTER_FOOT_WIDTH 20 |
129 | #define POINTER_OFFSET (BALLOON_CORNER_RADIUS*3/4) |
130 | #define BALLOON_SHADOW (BALLOON_CORNER_RADIUS/2) |
131 | #define BALLOON_SHADOW_TRANSPARENCY 0.2 |
132 | |
133 | #define BALLOON_W (BALLOON_WIDTH + BALLOON_SHADOW) |
134 | #define BALLOON_H (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW) |
135 | |
136 | #define CLOSE_BUTTON_RADIUS (BALLOON_CORNER_RADIUS) |
137 | |
138 | #if 0 |
139 | #define FIN printf("entering function %s\n", __func__); |
140 | #define FOUT printf("leaving function %s\n", __func__); |
141 | #else |
142 | #define FIN ; |
143 | #define FOUT ; |
144 | #endif |
145 | |
146 | /* draw the bubble shape. this is used twice, once for the shape and once */ |
147 | /* for the shadow */ |
148 | static void |
149 | osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1, |
150 | gboolean bottom, int px, int py, int px0, int px1) { |
151 | |
152 | FIN; |
153 | |
154 | cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS); |
155 | cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS, |
156 | BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2); |
157 | if(!bottom) { |
158 | /* insert top pointer */ |
159 | cairo_line_to (cr, px1, y0); |
160 | cairo_line_to (cr, px, py); |
161 | cairo_line_to (cr, px0, y0); |
162 | } |
163 | |
164 | cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0); |
165 | cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS, |
166 | BALLOON_CORNER_RADIUS, -M_PI/2, 0); |
167 | cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS); |
168 | cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS, |
169 | BALLOON_CORNER_RADIUS, 0, M_PI/2); |
170 | if(bottom) { |
171 | /* insert bottom pointer */ |
172 | cairo_line_to (cr, px0, y1); |
173 | cairo_line_to (cr, px, py); |
174 | cairo_line_to (cr, px1, y1); |
175 | } |
176 | |
177 | cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1); |
178 | cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS, |
179 | BALLOON_CORNER_RADIUS, M_PI/2, M_PI); |
180 | |
181 | cairo_close_path (cr); |
182 | |
183 | FOUT; |
184 | } |
185 | |
186 | static void |
187 | osd_render_balloon(osm_gps_map_osd_t *osd) { |
188 | FIN; |
189 | |
190 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
191 | |
192 | if(!priv->balloon.surface) |
193 | return; |
194 | |
195 | /* get zoom */ |
196 | gint zoom; |
197 | g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL); |
198 | |
199 | /* ------- convert given coordinate into screen position --------- */ |
200 | gint xs, ys; |
201 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
202 | priv->balloon.lat, priv->balloon.lon, |
203 | &xs, &ys); |
204 | |
205 | gint x0 = 1, y0 = 1; |
206 | |
207 | /* check position of this relative to screen center to determine */ |
208 | /* pointer direction ... */ |
209 | int pointer_x, pointer_x0, pointer_x1; |
210 | int pointer_y; |
211 | |
212 | /* ... and calculate position */ |
213 | int orientation = 0; |
214 | if(xs > osd->widget->allocation.width/2) { |
215 | priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET; |
216 | pointer_x = x0 - priv->balloon.offset_x; |
217 | pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET); |
218 | pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH; |
219 | orientation |= 1; |
220 | } else { |
221 | priv->balloon.offset_x = -POINTER_OFFSET; |
222 | pointer_x = x0 - priv->balloon.offset_x; |
223 | pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET); |
224 | pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH; |
225 | } |
226 | |
227 | gboolean bottom = FALSE; |
228 | if(ys > osd->widget->allocation.height/2) { |
229 | priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT; |
230 | pointer_y = y0 - priv->balloon.offset_y; |
231 | bottom = TRUE; |
232 | orientation |= 2; |
233 | } else { |
234 | priv->balloon.offset_y = 0; |
235 | pointer_y = y0 - priv->balloon.offset_y; |
236 | y0 += POINTER_HEIGHT; |
237 | } |
238 | |
239 | /* if required orientation equals current one, then don't render */ |
240 | /* anything */ |
241 | if(orientation == priv->balloon.orientation) |
242 | return; |
243 | |
244 | priv->balloon.orientation = orientation; |
245 | |
246 | /* calculate bottom/right of box */ |
247 | int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT; |
248 | |
249 | /* save balloon screen coordinates for later use */ |
250 | priv->balloon.rect.x = x0 + BALLOON_BORDER; |
251 | priv->balloon.rect.y = y0 + BALLOON_BORDER; |
252 | priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER; |
253 | priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER; |
254 | |
255 | g_assert(priv->balloon.surface); |
256 | cairo_t *cr = cairo_create(priv->balloon.surface); |
257 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
258 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
259 | cairo_paint(cr); |
260 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
261 | |
262 | /* --------- draw shadow --------------- */ |
263 | osm_gps_map_draw_balloon_shape (cr, |
264 | x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW, |
265 | x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW, |
266 | bottom, pointer_x, pointer_y, |
267 | pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW); |
268 | |
269 | cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY); |
270 | cairo_fill_preserve (cr); |
271 | cairo_set_source_rgba (cr, 1, 0, 0, 1.0); |
272 | cairo_set_line_width (cr, 0); |
273 | cairo_stroke (cr); |
274 | |
275 | /* --------- draw main shape ----------- */ |
276 | osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1, |
277 | bottom, pointer_x, pointer_y, pointer_x0, pointer_x1); |
278 | |
279 | cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY); |
280 | cairo_fill_preserve (cr); |
281 | cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY); |
282 | cairo_set_line_width (cr, 1); |
283 | cairo_stroke (cr); |
284 | |
285 | if (priv->balloon.cb) { |
286 | osm_gps_map_balloon_event_t event; |
287 | |
288 | /* clip in case application tries to draw in */ |
289 | /* exceed of the balloon */ |
290 | cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y, |
291 | priv->balloon.rect.w, priv->balloon.rect.h); |
292 | cairo_clip (cr); |
293 | cairo_new_path (cr); /* current path is not consumed by cairo_clip */ |
294 | |
295 | /* request the application to draw the balloon contents */ |
296 | event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW; |
297 | event.data.draw.rect = &priv->balloon.rect; |
298 | event.data.draw.cr = cr; |
299 | |
300 | priv->balloon.cb(&event, priv->balloon.data); |
301 | } |
302 | |
303 | cairo_destroy(cr); |
304 | |
305 | FOUT; |
306 | } |
307 | |
308 | /* return true if balloon is being displayed and if */ |
309 | /* the given coordinate is within this balloon */ |
310 | static gboolean |
311 | osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) |
312 | { |
313 | FIN; |
314 | |
315 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
316 | |
317 | if(!priv->balloon.surface) |
318 | return FALSE; |
319 | |
320 | gint xs, ys; |
321 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
322 | priv->balloon.lat, priv->balloon.lon, |
323 | &xs, &ys); |
324 | |
325 | xs += priv->balloon.rect.x + priv->balloon.offset_x; |
326 | ys += priv->balloon.rect.y + priv->balloon.offset_y; |
327 | |
328 | gboolean is_in = |
329 | (x > xs) && (x < xs + priv->balloon.rect.w) && |
330 | (y > ys) && (y < ys + priv->balloon.rect.h); |
331 | |
332 | /* is this a real click or is the application just checking for something? */ |
333 | if(click) { |
334 | |
335 | /* handle the fact that the balloon may have been created by the */ |
336 | /* button down event */ |
337 | if(!is_in && !down && !priv->balloon.just_created) { |
338 | /* the user actually clicked outside the balloon */ |
339 | |
340 | /* close the balloon! */ |
341 | osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget)); |
342 | |
343 | /* and inform application about this */ |
344 | if(priv->balloon.cb) { |
345 | osm_gps_map_balloon_event_t event; |
346 | event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED; |
347 | priv->balloon.cb(&event, priv->balloon.data); |
348 | } |
349 | |
350 | } |
351 | |
352 | if(is_in && priv->balloon.cb) { |
353 | osm_gps_map_balloon_event_t event; |
354 | |
355 | /* notify application of click */ |
356 | event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK; |
357 | event.data.click.x = x - xs; |
358 | event.data.click.y = y - ys; |
359 | event.data.click.down = down; |
360 | |
361 | priv->balloon.cb(&event, priv->balloon.data); |
362 | } |
363 | } |
364 | FOUT; |
365 | return is_in; |
366 | } |
367 | |
368 | void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) { |
369 | FIN; |
370 | |
371 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
372 | |
373 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
374 | g_return_if_fail (osd); |
375 | |
376 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
377 | g_return_if_fail (priv); |
378 | |
379 | if(priv->balloon.surface) { |
380 | cairo_surface_destroy(priv->balloon.surface); |
381 | priv->balloon.surface = NULL; |
382 | priv->balloon.lat = OSM_GPS_MAP_INVALID; |
383 | priv->balloon.lon = OSM_GPS_MAP_INVALID; |
384 | } |
385 | osm_gps_map_redraw(map); |
386 | FOUT; |
387 | } |
388 | |
389 | void |
390 | osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude, |
391 | OsmGpsMapBalloonCallback cb, gpointer data) { |
392 | FIN; |
393 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
394 | |
395 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
396 | g_return_if_fail (osd); |
397 | |
398 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
399 | g_return_if_fail (priv); |
400 | |
401 | osm_gps_map_osd_clear_balloon (map); |
402 | |
403 | /* allocate balloon surface */ |
404 | priv->balloon.surface = |
405 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
406 | BALLOON_W+2, BALLOON_H+2); |
407 | |
408 | priv->balloon.lat = latitude; |
409 | priv->balloon.lon = longitude; |
410 | priv->balloon.cb = cb; |
411 | priv->balloon.data = data; |
412 | priv->balloon.just_created = TRUE; |
413 | |
414 | priv->balloon.orientation = -1; |
415 | |
416 | osd_render_balloon(osd); |
417 | |
418 | osm_gps_map_redraw(map); |
419 | FOUT; |
420 | } |
421 | |
422 | #endif // OSD_BALLOON |
423 | |
424 | /* position and extent of bounding box */ |
425 | #ifndef OSD_X |
426 | #define OSD_X (10) |
427 | #endif |
428 | |
429 | #ifndef OSD_Y |
430 | #define OSD_Y (10) |
431 | #endif |
432 | |
433 | /* parameters of the direction shape */ |
434 | #ifndef OSD_DIAMETER |
435 | #define D_RAD (30) // diameter of dpad |
436 | #else |
437 | #define D_RAD (OSD_DIAMETER) |
438 | #endif |
439 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
440 | #define D_LEN (D_RAD/4) // length of arrow |
441 | #define D_WID (D_LEN) // width of arrow |
442 | |
443 | /* parameters of the "zoom" pad */ |
444 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
445 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
446 | |
447 | #ifdef OSD_SHADOW_ENABLE |
448 | /* shadow also depends on control size */ |
449 | #define OSD_SHADOW (D_RAD/6) |
450 | #else |
451 | #define OSD_SHADOW (0) |
452 | #endif |
453 | |
454 | /* normally the GPS button is in the center of the dpad. if there's */ |
455 | /* no dpad it will go into the zoom area */ |
456 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
457 | #define Z_GPS 1 |
458 | #else |
459 | #define Z_GPS 0 |
460 | #endif |
461 | |
462 | /* total width and height of controls incl. shadow */ |
463 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
464 | #if !Z_GPS |
465 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
466 | #else |
467 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
468 | #endif |
469 | |
470 | #ifdef OSD_SHADOW_ENABLE |
471 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
472 | #endif |
473 | |
474 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
475 | |
476 | #define Z_MID (Z_TOP + Z_RAD) |
477 | #define Z_BOT (Z_MID + Z_RAD) |
478 | #define Z_LEFT (Z_RAD) |
479 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
480 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
481 | |
482 | /* create the cairo shape used for the zoom buttons */ |
483 | static void |
484 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
485 | { |
486 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
487 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
488 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
489 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
490 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
491 | } |
492 | |
493 | /* ------------------- color/shadow functions ----------------- */ |
494 | |
495 | #ifndef OSD_COLOR |
496 | /* if no color has been specified we just use the gdks default colors */ |
497 | static void |
498 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
499 | GdkColor *fg, GdkColor *disabled) { |
500 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
501 | else gdk_cairo_set_source_color(cr, disabled); |
502 | cairo_set_line_width (cr, width); |
503 | } |
504 | #else |
505 | static void |
506 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
507 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
508 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
509 | cairo_set_line_width (cr, width); |
510 | } |
511 | #endif |
512 | |
513 | #ifdef OSD_SHADOW_ENABLE |
514 | static void |
515 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
516 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
517 | cairo_set_line_width (cr, width); |
518 | } |
519 | #endif |
520 | |
521 | #ifndef OSD_NO_DPAD |
522 | /* create the cairo shape used for the dpad */ |
523 | static void |
524 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
525 | { |
526 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
527 | } |
528 | #endif |
529 | |
530 | #ifdef OSD_SHADOW_ENABLE |
531 | static void |
532 | osd_shape_shadow(cairo_t *cr) { |
533 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
534 | cairo_fill (cr); |
535 | cairo_stroke (cr); |
536 | } |
537 | #endif |
538 | |
539 | #ifndef OSD_COLOR |
540 | /* if no color has been specified we just use the gdks default colors */ |
541 | static void |
542 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
543 | gdk_cairo_set_source_color(cr, bg); |
544 | cairo_fill_preserve (cr); |
545 | gdk_cairo_set_source_color(cr, fg); |
546 | cairo_set_line_width (cr, 1); |
547 | cairo_stroke (cr); |
548 | } |
549 | #else |
550 | static void |
551 | osd_shape(cairo_t *cr) { |
552 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
553 | cairo_fill_preserve (cr); |
554 | cairo_set_source_rgb (cr, OSD_COLOR); |
555 | cairo_set_line_width (cr, 1); |
556 | cairo_stroke (cr); |
557 | } |
558 | #endif |
559 | |
560 | |
561 | static gboolean |
562 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
563 | { |
564 | FIN; |
565 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
566 | } |
567 | |
568 | #ifndef OSD_NO_DPAD |
569 | /* check whether x/y is within the dpad */ |
570 | static osd_button_t |
571 | osd_check_dpad(gint x, gint y) |
572 | { |
573 | /* within entire dpad circle */ |
574 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
575 | { |
576 | /* convert into position relative to dpads centre */ |
577 | x -= D_RAD; |
578 | y -= D_RAD; |
579 | |
580 | #ifdef OSD_GPS_BUTTON |
581 | /* check for dpad center goes here! */ |
582 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
583 | return OSD_GPS; |
584 | #endif |
585 | |
586 | if( y < 0 && abs(x) < abs(y)) |
587 | return OSD_UP; |
588 | |
589 | if( y > 0 && abs(x) < abs(y)) |
590 | return OSD_DOWN; |
591 | |
592 | if( x < 0 && abs(y) < abs(x)) |
593 | return OSD_LEFT; |
594 | |
595 | if( x > 0 && abs(y) < abs(x)) |
596 | return OSD_RIGHT; |
597 | |
598 | return OSD_BG; |
599 | } |
600 | return OSD_NONE; |
601 | } |
602 | #endif |
603 | |
604 | /* check whether x/y is within the zoom pads */ |
605 | static osd_button_t |
606 | osd_check_zoom(gint x, gint y) { |
607 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
608 | |
609 | /* within circle around (-) label */ |
610 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
611 | return OSD_OUT; |
612 | |
613 | /* within circle around (+) label */ |
614 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
615 | return OSD_IN; |
616 | |
617 | #if Z_GPS == 1 |
618 | /* within square around center */ |
619 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
620 | return OSD_GPS; |
621 | #endif |
622 | |
623 | /* between center of (-) button and center of entire zoom control area */ |
624 | if(x > OSD_LEFT && x < D_RAD) |
625 | return OSD_OUT; |
626 | |
627 | /* between center of (+) button and center of entire zoom control area */ |
628 | if(x < OSD_RIGHT && x > D_RAD) |
629 | return OSD_IN; |
630 | } |
631 | |
632 | return OSD_NONE; |
633 | } |
634 | |
635 | #ifdef OSD_SOURCE_SEL |
636 | |
637 | /* place source selection at right border */ |
638 | #define OSD_S_RAD (Z_RAD) |
639 | #define OSD_S_X (-OSD_X) |
640 | #define OSD_S_Y (OSD_Y) |
641 | #define OSD_S_PW (2 * Z_RAD) |
642 | #define OSD_S_W (OSD_S_PW) |
643 | #define OSD_S_PH (2 * Z_RAD) |
644 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
645 | |
646 | /* size of usable area when expanded */ |
647 | #define OSD_S_AREA_W (priv->source_sel.width) |
648 | #define OSD_S_AREA_H (priv->source_sel.height) |
649 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
650 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
651 | |
652 | /* internal value to draw the arrow on the "puller" */ |
653 | #define OSD_S_D0 (OSD_S_RAD/2) |
654 | #ifndef OSD_FONT_SIZE |
655 | #define OSD_FONT_SIZE (16.0) |
656 | #endif |
657 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
658 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
659 | |
660 | /* draw the shape of the source selection OSD, either only the puller (not expanded) */ |
661 | /* or the entire menu incl. the puller (expanded) */ |
662 | static void |
663 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
664 | if(!priv->source_sel.expanded) { |
665 | /* just draw the puller */ |
666 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
667 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
668 | cairo_line_to (cr, x + OSD_S_PW, y); |
669 | } else { |
670 | /* draw the puller and the area itself */ |
671 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
672 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
673 | if(OSD_S_Y > 0) { |
674 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
675 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
676 | } else { |
677 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
678 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
679 | cairo_line_to (cr, x + OSD_S_PW, y); |
680 | } |
681 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
682 | cairo_close_path (cr); |
683 | } |
684 | } |
685 | |
686 | static void |
687 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
688 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
689 | |
690 | int py = offset + OSD_S_RAD - OSD_S_D0; |
691 | |
692 | if(!priv->source_sel.expanded) { |
693 | /* draw the "puller" open (<) arrow */ |
694 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
695 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
696 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
697 | } else { |
698 | if(OSD_S_Y < 0) |
699 | py += OSD_S_AREA_H - OSD_S_PH; |
700 | |
701 | /* draw the "puller" close (>) arrow */ |
702 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
703 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
704 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
705 | cairo_stroke(cr); |
706 | |
707 | /* don't draw a shadow for the text content */ |
708 | if(offset == 1) { |
709 | gint source; |
710 | g_object_get(osd->widget, "map-source", &source, NULL); |
711 | |
712 | cairo_select_font_face (cr, "Sans", |
713 | CAIRO_FONT_SLANT_NORMAL, |
714 | CAIRO_FONT_WEIGHT_BOLD); |
715 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
716 | |
717 | int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) / |
718 | OSM_GPS_MAP_SOURCE_LAST; |
719 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
720 | cairo_text_extents_t extents; |
721 | const char *src = osm_gps_map_source_get_friendly_name(i); |
722 | cairo_text_extents (cr, src, &extents); |
723 | |
724 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
725 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
726 | |
727 | /* draw filled rectangle if selected */ |
728 | if(source == i) { |
729 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
730 | y - OSD_TEXT_SKIP, |
731 | priv->source_sel.width - OSD_TEXT_BORDER, |
732 | step + OSD_TEXT_SKIP); |
733 | cairo_fill(cr); |
734 | |
735 | /* temprarily draw with background color */ |
736 | #ifndef OSD_COLOR |
737 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
738 | gdk_cairo_set_source_color(cr, &bg); |
739 | #else |
740 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
741 | #endif |
742 | } |
743 | |
744 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
745 | cairo_show_text (cr, src); |
746 | |
747 | /* restore color */ |
748 | if(source == i) { |
749 | #ifndef OSD_COLOR |
750 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
751 | gdk_cairo_set_source_color(cr, &fg); |
752 | #else |
753 | cairo_set_source_rgb (cr, OSD_COLOR); |
754 | #endif |
755 | } |
756 | } |
757 | } |
758 | } |
759 | } |
760 | |
761 | static void |
762 | osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) { |
763 | FIN; |
764 | |
765 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
766 | |
767 | if(!priv->source_sel.surface || |
768 | (priv->source_sel.rendered && !force_rerender)) |
769 | return; |
770 | |
771 | priv->source_sel.rendered = TRUE; |
772 | |
773 | #ifndef OSD_COLOR |
774 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
775 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
776 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
777 | #endif |
778 | |
779 | /* draw source selector */ |
780 | g_assert(priv->source_sel.surface); |
781 | cairo_t *cr = cairo_create(priv->source_sel.surface); |
782 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
783 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
784 | cairo_paint(cr); |
785 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
786 | |
787 | #ifdef OSD_SHADOW_ENABLE |
788 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
789 | osd_shape_shadow(cr); |
790 | #endif |
791 | |
792 | osd_source_shape(priv, cr, 1, 1); |
793 | #ifndef OSD_COLOR |
794 | osd_shape(cr, &bg, &fg); |
795 | #else |
796 | osd_shape(cr); |
797 | #endif |
798 | |
799 | #ifdef OSD_SHADOW_ENABLE |
800 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
801 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
802 | cairo_stroke (cr); |
803 | #endif |
804 | #ifndef OSD_COLOR |
805 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
806 | #else |
807 | osd_labels(cr, Z_RAD/3, TRUE); |
808 | #endif |
809 | osd_source_content(osd, cr, 1); |
810 | cairo_stroke (cr); |
811 | |
812 | cairo_destroy(cr); |
813 | FOUT; |
814 | } |
815 | |
816 | /* re-allocate the buffer used to draw the menu. This is used */ |
817 | /* to collapse/expand the buffer */ |
818 | static void |
819 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
820 | FIN; |
821 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
822 | |
823 | /* re-allocate offscreen bitmap */ |
824 | g_assert (priv->source_sel.surface); |
825 | |
826 | int w = OSD_S_W, h = OSD_S_H; |
827 | if(priv->source_sel.expanded) { |
828 | cairo_text_extents_t extents; |
829 | |
830 | /* determine content size */ |
831 | g_assert(priv->source_sel.surface); |
832 | cairo_t *cr = cairo_create(priv->source_sel.surface); |
833 | cairo_select_font_face (cr, "Sans", |
834 | CAIRO_FONT_SLANT_NORMAL, |
835 | CAIRO_FONT_WEIGHT_BOLD); |
836 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
837 | |
838 | /* calculate menu size */ |
839 | int i, max_h = 0, max_w = 0; |
840 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
841 | const char *src = osm_gps_map_source_get_friendly_name(i); |
842 | cairo_text_extents (cr, src, &extents); |
843 | |
844 | if(extents.width > max_w) max_w = extents.width; |
845 | if(extents.height > max_h) max_h = extents.height; |
846 | } |
847 | cairo_destroy(cr); |
848 | |
849 | priv->source_sel.width = max_w + 2*OSD_TEXT_BORDER; |
850 | priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST * |
851 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
852 | |
853 | w = OSD_S_EXP_W; |
854 | h = OSD_S_EXP_H; |
855 | } |
856 | |
857 | cairo_surface_destroy(priv->source_sel.surface); |
858 | priv->source_sel.surface = |
859 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
860 | |
861 | osd_render_source_sel(osd, TRUE); |
862 | FOUT; |
863 | } |
864 | |
865 | #define OSD_HZ 15 |
866 | #define OSD_TIME 500 |
867 | |
868 | static gboolean osd_source_animate(gpointer data) { |
869 | FIN; |
870 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
871 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
872 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
873 | gboolean done = FALSE; |
874 | priv->source_sel.count += priv->source_sel.dir; |
875 | |
876 | /* shifting in */ |
877 | if(priv->source_sel.dir < 0) { |
878 | if(priv->source_sel.count <= 0) { |
879 | priv->source_sel.count = 0; |
880 | done = TRUE; |
881 | } |
882 | } else { |
883 | if(priv->source_sel.count >= 1000) { |
884 | priv->source_sel.expanded = FALSE; |
885 | osd_source_reallocate(osd); |
886 | |
887 | priv->source_sel.count = 1000; |
888 | done = TRUE; |
889 | } |
890 | } |
891 | |
892 | |
893 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
894 | |
895 | /* nice sinoid mapping */ |
896 | float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2; |
897 | priv->source_sel.shift = |
898 | (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
899 | m * diff; |
900 | |
901 | /* make sure the screen is updated */ |
902 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
903 | |
904 | /* stop animation if done */ |
905 | if(done) |
906 | priv->source_sel.handler_id = 0; |
907 | |
908 | FOUT; |
909 | return !done; |
910 | } |
911 | |
912 | /* switch between expand and collapse mode of source selection */ |
913 | static void |
914 | osd_source_toggle(osm_gps_map_osd_t *osd) |
915 | { |
916 | FIN; |
917 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
918 | |
919 | /* ignore clicks while animation is running */ |
920 | if(priv->source_sel.handler_id) |
921 | return; |
922 | |
923 | /* expand immediately, collapse is handle at the end of the */ |
924 | /* collapse animation */ |
925 | if(!priv->source_sel.expanded) { |
926 | priv->source_sel.expanded = TRUE; |
927 | osd_source_reallocate(osd); |
928 | |
929 | priv->source_sel.count = 1000; |
930 | priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W; |
931 | priv->source_sel.dir = -1000/OSD_HZ; |
932 | } else { |
933 | priv->source_sel.count = 0; |
934 | priv->source_sel.shift = osd->widget->allocation.width - |
935 | OSD_S_EXP_W + OSD_S_X; |
936 | priv->source_sel.dir = +1000/OSD_HZ; |
937 | } |
938 | |
939 | /* start timer to handle animation */ |
940 | priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, |
941 | osd_source_animate, osd); |
942 | FOUT; |
943 | } |
944 | |
945 | /* check if the user clicked inside the source selection area */ |
946 | static osd_button_t |
947 | osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) { |
948 | FIN; |
949 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
950 | |
951 | if(!priv->source_sel.expanded) |
952 | x -= osd->widget->allocation.width - OSD_S_W; |
953 | else |
954 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
955 | |
956 | if(OSD_S_Y > 0) |
957 | y -= OSD_S_Y; |
958 | else |
959 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
960 | |
961 | /* within square around puller? */ |
962 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
963 | /* really within puller shape? */ |
964 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
965 | /* expand source selector */ |
966 | if(down) |
967 | osd_source_toggle(osd); |
968 | |
969 | /* tell upper layers that user clicked some background element */ |
970 | /* of the OSD */ |
971 | return OSD_BG; |
972 | } |
973 | } |
974 | |
975 | /* check for clicks into data area */ |
976 | if(priv->source_sel.expanded && !priv->source_sel.handler_id) { |
977 | /* re-adjust from puller top to content top */ |
978 | if(OSD_S_Y < 0) |
979 | y += OSD_S_EXP_H - OSD_S_PH; |
980 | |
981 | if(x > OSD_S_PW && |
982 | x < OSD_S_PW + OSD_S_EXP_W && |
983 | y > 0 && |
984 | y < OSD_S_EXP_H) { |
985 | |
986 | int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) |
987 | / OSM_GPS_MAP_SOURCE_LAST; |
988 | |
989 | y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP; |
990 | y /= step; |
991 | y += 1; |
992 | |
993 | if(down) { |
994 | gint old = 0; |
995 | g_object_get(osd->widget, "map-source", &old, NULL); |
996 | |
997 | if(y > OSM_GPS_MAP_SOURCE_NULL && |
998 | y <= OSM_GPS_MAP_SOURCE_LAST && |
999 | old != y) { |
1000 | g_object_set(osd->widget, "map-source", y, NULL); |
1001 | |
1002 | osd_render_source_sel(osd, TRUE); |
1003 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
1004 | } |
1005 | } |
1006 | |
1007 | /* return "clicked in OSD background" to prevent further */ |
1008 | /* processing by application */ |
1009 | return OSD_BG; |
1010 | } |
1011 | } |
1012 | |
1013 | FOUT; |
1014 | return OSD_NONE; |
1015 | } |
1016 | #endif // OSD_SOURCE_SEL |
1017 | |
1018 | #ifndef OSD_NO_DPAD |
1019 | static void |
1020 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
1021 | /* move reference to dpad center */ |
1022 | x += D_RAD; |
1023 | y += D_RAD; |
1024 | |
1025 | const static gint offset[][3][2] = { |
1026 | /* left arrow/triangle */ |
1027 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
1028 | /* right arrow/triangle */ |
1029 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
1030 | /* top arrow/triangle */ |
1031 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
1032 | /* bottom arrow/triangle */ |
1033 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
1034 | }; |
1035 | |
1036 | int i; |
1037 | for(i=0;i<4;i++) { |
1038 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
1039 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
1040 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
1041 | } |
1042 | } |
1043 | #endif |
1044 | |
1045 | #ifdef OSD_GPS_BUTTON |
1046 | /* draw the satellite dish icon in the center of the dpad */ |
1047 | #define GPS_V0 (D_RAD/7) |
1048 | #define GPS_V1 (D_RAD/10) |
1049 | #define GPS_V2 (D_RAD/5) |
1050 | |
1051 | /* draw a satellite receiver dish */ |
1052 | /* this is either drawn in the center of the dpad (if present) */ |
1053 | /* or in the middle of the zoom area */ |
1054 | static void |
1055 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
1056 | /* move reference to dpad center */ |
1057 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
1058 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
1059 | |
1060 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
1061 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
1062 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
1063 | cairo_close_path (cr); |
1064 | |
1065 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
1066 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
1067 | cairo_close_path (cr); |
1068 | |
1069 | x += GPS_V1; |
1070 | cairo_move_to (cr, x, y-GPS_V2); |
1071 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
1072 | } |
1073 | #endif |
1074 | |
1075 | #define Z_LEN (2*Z_RAD/3) |
1076 | |
1077 | static void |
1078 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
1079 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
1080 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
1081 | |
1082 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
1083 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
1084 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
1085 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
1086 | } |
1087 | |
1088 | #ifdef OSD_COORDINATES |
1089 | |
1090 | #ifndef OSD_COORDINATES_FONT_SIZE |
1091 | #define OSD_COORDINATES_FONT_SIZE (12.0) |
1092 | #endif |
1093 | |
1094 | #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6) |
1095 | |
1096 | #define OSD_COORDINATES_W (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET) |
1097 | #define OSD_COORDINATES_H (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4) |
1098 | |
1099 | /* these can be overwritten with versions that support */ |
1100 | /* localization */ |
1101 | #ifndef OSD_COORDINATES_CHR_N |
1102 | #define OSD_COORDINATES_CHR_N "N" |
1103 | #endif |
1104 | #ifndef OSD_COORDINATES_CHR_S |
1105 | #define OSD_COORDINATES_CHR_S "S" |
1106 | #endif |
1107 | #ifndef OSD_COORDINATES_CHR_E |
1108 | #define OSD_COORDINATES_CHR_E "E" |
1109 | #endif |
1110 | #ifndef OSD_COORDINATES_CHR_W |
1111 | #define OSD_COORDINATES_CHR_W "W" |
1112 | #endif |
1113 | |
1114 | |
1115 | |
1116 | /* this is the classic geocaching notation */ |
1117 | static char |
1118 | *osd_latitude_str(float latitude) { |
1119 | char *c = OSD_COORDINATES_CHR_N; |
1120 | float integral, fractional; |
1121 | |
1122 | if(isnan(latitude)) |
1123 | return NULL; |
1124 | |
1125 | if(latitude < 0) { |
1126 | latitude = fabs(latitude); |
1127 | c = OSD_COORDINATES_CHR_S; |
1128 | } |
1129 | |
1130 | fractional = modff(latitude, &integral); |
1131 | |
1132 | return g_strdup_printf("%s %02d° %06.3f'", |
1133 | c, (int)integral, fractional*60.0); |
1134 | } |
1135 | |
1136 | static char |
1137 | *osd_longitude_str(float longitude) { |
1138 | char *c = OSD_COORDINATES_CHR_E; |
1139 | float integral, fractional; |
1140 | |
1141 | if(isnan(longitude)) |
1142 | return NULL; |
1143 | |
1144 | if(longitude < 0) { |
1145 | longitude = fabs(longitude); |
1146 | c = OSD_COORDINATES_CHR_W; |
1147 | } |
1148 | |
1149 | fractional = modff(longitude, &integral); |
1150 | |
1151 | return g_strdup_printf("%s %03d° %06.3f'", |
1152 | c, (int)integral, fractional*60.0); |
1153 | } |
1154 | |
1155 | /* render a string at the given screen position */ |
1156 | static int |
1157 | osd_render_centered_text(cairo_t *cr, int y, int width, char *text) { |
1158 | FIN; |
1159 | |
1160 | if(!text) return y; |
1161 | |
1162 | char *p = g_malloc(strlen(text)+4); // space for "...\n" |
1163 | strcpy(p, text); |
1164 | |
1165 | cairo_text_extents_t extents; |
1166 | memset(&extents, 0, sizeof(cairo_text_extents_t)); |
1167 | cairo_text_extents (cr, p, &extents); |
1168 | g_assert(extents.width != 0.0); |
1169 | |
1170 | /* check if text needs to be truncated */ |
1171 | int trunc_at = strlen(text); |
1172 | while(extents.width > width) { |
1173 | |
1174 | /* cut off all utf8 multibyte remains so the actual */ |
1175 | /* truncation only deals with one byte */ |
1176 | while((p[trunc_at-1] & 0xc0) == 0x80) { |
1177 | trunc_at--; |
1178 | g_assert(trunc_at > 0); |
1179 | } |
1180 | |
1181 | trunc_at--; |
1182 | g_assert(trunc_at > 0); |
1183 | |
1184 | strcpy(p+trunc_at, "..."); |
1185 | cairo_text_extents (cr, p, &extents); |
1186 | } |
1187 | |
1188 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
1189 | cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6); |
1190 | cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing); |
1191 | cairo_text_path (cr, p); |
1192 | cairo_stroke (cr); |
1193 | |
1194 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
1195 | cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing); |
1196 | cairo_show_text (cr, p); |
1197 | |
1198 | g_free(p); |
1199 | |
1200 | /* skip + 1/5 line */ |
1201 | FOUT; |
1202 | return y + 6*OSD_COORDINATES_FONT_SIZE/5; |
1203 | } |
1204 | |
1205 | static void |
1206 | osd_render_coordinates(osm_gps_map_osd_t *osd) |
1207 | { |
1208 | FIN; |
1209 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1210 | |
1211 | if(!priv->coordinates.surface) |
1212 | return; |
1213 | |
1214 | /* get current map position */ |
1215 | gfloat lat, lon; |
1216 | g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL); |
1217 | |
1218 | /* check if position has changed enough to require redraw */ |
1219 | if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon)) |
1220 | /* 1/60000 == 1/1000 minute */ |
1221 | if((fabsf(lat - priv->coordinates.lat) < 1/60000) && |
1222 | (fabsf(lon - priv->coordinates.lon) < 1/60000)) |
1223 | return; |
1224 | |
1225 | priv->coordinates.lat = lat; |
1226 | priv->coordinates.lon = lon; |
1227 | |
1228 | /* first fill with transparency */ |
1229 | |
1230 | g_assert(priv->coordinates.surface); |
1231 | cairo_t *cr = cairo_create(priv->coordinates.surface); |
1232 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1233 | // cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5); |
1234 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
1235 | cairo_paint(cr); |
1236 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1237 | |
1238 | cairo_select_font_face (cr, "Sans", |
1239 | CAIRO_FONT_SLANT_NORMAL, |
1240 | CAIRO_FONT_WEIGHT_BOLD); |
1241 | cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE); |
1242 | |
1243 | char *latitude = osd_latitude_str(lat); |
1244 | char *longitude = osd_longitude_str(lon); |
1245 | |
1246 | int y = OSD_COORDINATES_OFFSET; |
1247 | y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude); |
1248 | y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude); |
1249 | |
1250 | g_free(latitude); |
1251 | g_free(longitude); |
1252 | |
1253 | cairo_destroy(cr); |
1254 | FOUT; |
1255 | } |
1256 | #endif // OSD_COORDINATES |
1257 | |
1258 | #ifdef OSD_NAV |
1259 | #define OSD_NAV_W (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET) |
1260 | #define OSD_NAV_H (11*OSD_COORDINATES_FONT_SIZE) |
1261 | |
1262 | /* http://mathforum.org/library/drmath/view/55417.html */ |
1263 | static float get_bearing(float lat1, float lon1, float lat2, float lon2) { |
1264 | return atan2( sin(lon2 - lon1) * cos(lat2), |
1265 | cos(lat1) * sin(lat2) - |
1266 | sin(lat1) * cos(lat2) * cos(lon2 - lon1)); |
1267 | } |
1268 | |
1269 | /* http://mathforum.org/library/drmath/view/51722.html */ |
1270 | static float get_distance(float lat1, float lon1, float lat2, float lon2) { |
1271 | float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) + |
1272 | sin(lat1) * sin(lat2)); |
1273 | |
1274 | // return(aob * 3959.0); /* great circle radius in miles */ |
1275 | |
1276 | return(aob * 6371000.0); /* great circle radius in meters */ |
1277 | } |
1278 | |
1279 | static void |
1280 | osd_render_nav(osm_gps_map_osd_t *osd) |
1281 | { |
1282 | FIN; |
1283 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1284 | |
1285 | if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon)) |
1286 | return; |
1287 | |
1288 | /* first fill with transparency */ |
1289 | g_assert(priv->nav.surface); |
1290 | cairo_t *cr = cairo_create(priv->nav.surface); |
1291 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1292 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
1293 | cairo_paint(cr); |
1294 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1295 | |
1296 | cairo_select_font_face (cr, "Sans", |
1297 | CAIRO_FONT_SLANT_NORMAL, |
1298 | CAIRO_FONT_WEIGHT_BOLD); |
1299 | cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE); |
1300 | |
1301 | char *latitude = osd_latitude_str(priv->nav.lat); |
1302 | char *longitude = osd_longitude_str(priv->nav.lon); |
1303 | |
1304 | int y = OSD_COORDINATES_OFFSET; |
1305 | y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name); |
1306 | y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude); |
1307 | y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude); |
1308 | |
1309 | g_free(latitude); |
1310 | g_free(longitude); |
1311 | |
1312 | /* draw the compass */ |
1313 | int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2; |
1314 | if(radius > OSD_NAV_W/2) |
1315 | radius = OSD_NAV_W/2; |
1316 | |
1317 | int x = OSD_NAV_W/2+1; |
1318 | y += radius; |
1319 | |
1320 | cairo_stroke (cr); |
1321 | |
1322 | /* draw background */ |
1323 | cairo_arc(cr, x, y, radius, 0, 2*M_PI); |
1324 | cairo_set_source_rgba (cr, 1, 1, 1, 0.5); |
1325 | cairo_fill_preserve (cr); |
1326 | cairo_set_source_rgb (cr, 0, 0, 0); |
1327 | cairo_set_line_width (cr, 1); |
1328 | cairo_stroke (cr); |
1329 | |
1330 | /* draw pointer */ |
1331 | #define ARROW_WIDTH 0.3 |
1332 | #define ARROW_LENGTH 0.7 |
1333 | |
1334 | coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget)); |
1335 | if(gps) { |
1336 | float arot = get_bearing(gps->rlat, gps->rlon, |
1337 | deg2rad(priv->nav.lat), deg2rad(priv->nav.lon)); |
1338 | |
1339 | cairo_move_to(cr, |
1340 | x + radius * ARROW_LENGTH * sin(arot), |
1341 | y + radius * ARROW_LENGTH * -cos(arot)); |
1342 | |
1343 | cairo_line_to(cr, |
1344 | x + radius * -ARROW_LENGTH * sin(arot+ARROW_WIDTH), |
1345 | y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH)); |
1346 | |
1347 | cairo_line_to(cr, |
1348 | x + radius * -0.5 * ARROW_LENGTH * sin(arot), |
1349 | y + radius * -0.5 * ARROW_LENGTH * -cos(arot)); |
1350 | |
1351 | cairo_line_to(cr, |
1352 | x + radius * -ARROW_LENGTH * sin(arot-ARROW_WIDTH), |
1353 | y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH)); |
1354 | |
1355 | cairo_close_path(cr); |
1356 | cairo_set_source_rgb (cr, 0, 0, 0); |
1357 | cairo_fill (cr); |
1358 | |
1359 | y += radius + OSD_COORDINATES_FONT_SIZE/4; |
1360 | |
1361 | float dist = get_distance(gps->rlat, gps->rlon, |
1362 | deg2rad(priv->nav.lat), deg2rad(priv->nav.lon)); |
1363 | |
1364 | char *dist_str = NULL; |
1365 | if(!priv->nav.imperial) { |
1366 | /* metric is easy ... */ |
1367 | if(dist<1000) |
1368 | dist_str = g_strdup_printf("%u m", (int)dist); |
1369 | else |
1370 | dist_str = g_strdup_printf("%.1f km", dist/1000); |
1371 | } else { |
1372 | /* and now the hard part: scale for useful imperial values :-( */ |
1373 | /* try to convert to feet, 1ft == 0.3048 m */ |
1374 | |
1375 | if(dist/(3*0.3048) >= 1760.0) /* more than 1760 yard? */ |
1376 | dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0)); |
1377 | else if(dist/0.3048 >= 100) /* more than 100 feet? */ |
1378 | dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3)); |
1379 | else |
1380 | dist_str = g_strdup_printf("%.0f ft", dist/0.3048); |
1381 | } |
1382 | |
1383 | y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str); |
1384 | g_free(dist_str); |
1385 | } |
1386 | |
1387 | cairo_destroy(cr); |
1388 | FOUT; |
1389 | } |
1390 | |
1391 | /* check if the user clicked inside the source selection area */ |
1392 | static osd_button_t |
1393 | osd_nav_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) { |
1394 | FIN; |
1395 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1396 | |
1397 | if(!priv->nav.surface || down) |
1398 | return OSD_NONE; |
1399 | |
1400 | x -= OSD_X; |
1401 | if(OSD_X < 0) |
1402 | x -= (osd->widget->allocation.width - OSD_NAV_W); |
1403 | |
1404 | y -= (osd->widget->allocation.height - OSD_NAV_H)/2; |
1405 | |
1406 | if(x >= 0 && y >= 0 && x <= OSD_NAV_W && y <= OSD_NAV_H) { |
1407 | osm_gps_map_set_center(OSM_GPS_MAP(osd->widget), |
1408 | priv->nav.lat, priv->nav.lon); |
1409 | } |
1410 | |
1411 | FOUT; |
1412 | return OSD_NONE; |
1413 | } |
1414 | |
1415 | void osm_gps_map_osd_clear_nav (OsmGpsMap *map) { |
1416 | FIN; |
1417 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
1418 | |
1419 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1420 | g_return_if_fail (osd); |
1421 | |
1422 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1423 | g_return_if_fail (priv); |
1424 | |
1425 | if(priv->nav.surface) { |
1426 | cairo_surface_destroy(priv->nav.surface); |
1427 | priv->nav.surface = NULL; |
1428 | priv->nav.lat = OSM_GPS_MAP_INVALID; |
1429 | priv->nav.lon = OSM_GPS_MAP_INVALID; |
1430 | if(priv->nav.name) g_free(priv->nav.name); |
1431 | } |
1432 | osm_gps_map_redraw(map); |
1433 | FOUT; |
1434 | } |
1435 | |
1436 | void |
1437 | osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial, |
1438 | float latitude, float longitude, char *name) { |
1439 | FIN; |
1440 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
1441 | |
1442 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1443 | g_return_if_fail (osd); |
1444 | |
1445 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1446 | g_return_if_fail (priv); |
1447 | |
1448 | osm_gps_map_osd_clear_nav (map); |
1449 | |
1450 | /* allocate balloon surface */ |
1451 | priv->nav.surface = |
1452 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1453 | OSD_NAV_W+2, OSD_NAV_H+2); |
1454 | |
1455 | priv->nav.lat = latitude; |
1456 | priv->nav.lon = longitude; |
1457 | priv->nav.name = g_strdup(name); |
1458 | priv->nav.imperial = imperial; |
1459 | |
1460 | osd_render_nav(osd); |
1461 | |
1462 | osm_gps_map_redraw(map); |
1463 | FOUT; |
1464 | } |
1465 | |
1466 | #endif // OSD_NAV |
1467 | |
1468 | static osd_button_t |
1469 | osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) { |
1470 | FIN; |
1471 | osd_button_t but = OSD_NONE; |
1472 | |
1473 | #ifdef OSD_BALLOON |
1474 | if(down) { |
1475 | /* needed to handle balloons that are created at click */ |
1476 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1477 | priv->balloon.just_created = FALSE; |
1478 | } |
1479 | #endif |
1480 | |
1481 | #ifdef OSD_SOURCE_SEL |
1482 | /* the source selection area is handles internally */ |
1483 | but = osd_source_check(osd, down, x, y); |
1484 | #endif |
1485 | |
1486 | #ifdef OSD_NAV |
1487 | if(but == OSD_NONE) { |
1488 | /* the source selection area is handles internally */ |
1489 | but = osd_nav_check(osd, down, x, y); |
1490 | } |
1491 | #endif |
1492 | |
1493 | if(but == OSD_NONE) { |
1494 | gint mx = x - OSD_X; |
1495 | gint my = y - OSD_Y; |
1496 | |
1497 | if(OSD_X < 0) |
1498 | mx -= (osd->widget->allocation.width - OSD_W); |
1499 | |
1500 | if(OSD_Y < 0) |
1501 | my -= (osd->widget->allocation.height - OSD_H); |
1502 | |
1503 | /* first do a rough test for the OSD area. */ |
1504 | /* this is just to avoid an unnecessary detailed test */ |
1505 | if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) { |
1506 | #ifndef OSD_NO_DPAD |
1507 | but = osd_check_dpad(mx, my); |
1508 | #endif |
1509 | } |
1510 | |
1511 | if(but == OSD_NONE) |
1512 | but = osd_check_zoom(mx, my); |
1513 | } |
1514 | |
1515 | #ifdef OSD_BALLOON |
1516 | if(but == OSD_NONE) { |
1517 | /* check if user clicked into balloon */ |
1518 | if(osd_balloon_check(osd, click, down, x, y)) |
1519 | but = OSD_BG; |
1520 | } |
1521 | #endif |
1522 | |
1523 | FOUT; |
1524 | return but; |
1525 | } |
1526 | |
1527 | |
1528 | #ifdef OSD_CROSSHAIR |
1529 | |
1530 | #ifndef OSD_CROSSHAIR_RADIUS |
1531 | #define OSD_CROSSHAIR_RADIUS 10 |
1532 | #endif |
1533 | |
1534 | #define OSD_CROSSHAIR_TICK (OSD_CROSSHAIR_RADIUS/2) |
1535 | #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4) |
1536 | #define OSD_CROSSHAIR_W ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2) |
1537 | #define OSD_CROSSHAIR_H ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2) |
1538 | |
1539 | static void |
1540 | osd_render_crosshair_shape(cairo_t *cr) { |
1541 | FIN; |
1542 | cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2, |
1543 | OSD_CROSSHAIR_RADIUS, 0, 2*M_PI); |
1544 | |
1545 | cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS, |
1546 | OSD_CROSSHAIR_H/2); |
1547 | cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0); |
1548 | cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS, |
1549 | OSD_CROSSHAIR_H/2); |
1550 | cairo_rel_line_to (cr, OSD_CROSSHAIR_TICK, 0); |
1551 | |
1552 | cairo_move_to (cr, OSD_CROSSHAIR_W/2, |
1553 | OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS); |
1554 | cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK); |
1555 | cairo_move_to (cr, OSD_CROSSHAIR_W/2, |
1556 | OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS); |
1557 | cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK); |
1558 | |
1559 | cairo_stroke (cr); |
1560 | FOUT; |
1561 | } |
1562 | |
1563 | static void |
1564 | osd_render_crosshair(osm_gps_map_osd_t *osd) |
1565 | { |
1566 | FIN; |
1567 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1568 | |
1569 | if(!priv->crosshair.surface || priv->crosshair.rendered) |
1570 | return; |
1571 | |
1572 | priv->crosshair.rendered = TRUE; |
1573 | |
1574 | /* first fill with transparency */ |
1575 | g_assert(priv->crosshair.surface); |
1576 | cairo_t *cr = cairo_create(priv->crosshair.surface); |
1577 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1578 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
1579 | cairo_paint(cr); |
1580 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1581 | |
1582 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
1583 | |
1584 | cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5); |
1585 | cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2); |
1586 | osd_render_crosshair_shape(cr); |
1587 | |
1588 | cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5); |
1589 | cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4); |
1590 | osd_render_crosshair_shape(cr); |
1591 | |
1592 | cairo_destroy(cr); |
1593 | FOUT; |
1594 | } |
1595 | #endif |
1596 | |
1597 | #ifdef OSD_SCALE |
1598 | |
1599 | #ifndef OSD_SCALE_FONT_SIZE |
1600 | #define OSD_SCALE_FONT_SIZE (12.0) |
1601 | #endif |
1602 | #define OSD_SCALE_W (10*OSD_SCALE_FONT_SIZE) |
1603 | #define OSD_SCALE_H (5*OSD_SCALE_FONT_SIZE/2) |
1604 | |
1605 | /* various parameters used to create the scale */ |
1606 | #define OSD_SCALE_H2 (OSD_SCALE_H/2) |
1607 | #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3) |
1608 | #define OSD_SCALE_M (OSD_SCALE_H2 - OSD_SCALE_TICK) |
1609 | #define OSD_SCALE_I (OSD_SCALE_H2 + OSD_SCALE_TICK) |
1610 | #define OSD_SCALE_FD (OSD_SCALE_FONT_SIZE/4) |
1611 | |
1612 | static void |
1613 | osd_render_scale(osm_gps_map_osd_t *osd) |
1614 | { |
1615 | FIN; |
1616 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1617 | |
1618 | if(!priv->scale.surface) |
1619 | return; |
1620 | |
1621 | /* this only needs to be rendered if the zoom has changed */ |
1622 | gint zoom; |
1623 | g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL); |
1624 | if(zoom == priv->scale.zoom) |
1625 | return; |
1626 | |
1627 | priv->scale.zoom = zoom; |
1628 | |
1629 | float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget)); |
1630 | |
1631 | /* first fill with transparency */ |
1632 | g_assert(priv->scale.surface); |
1633 | cairo_t *cr = cairo_create(priv->scale.surface); |
1634 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1635 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
1636 | // pink for testing: cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
1637 | cairo_paint(cr); |
1638 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1639 | |
1640 | /* determine the size of the scale width in meters */ |
1641 | float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix; |
1642 | |
1643 | /* scale this to useful values */ |
1644 | int exp = logf(width)*M_LOG10E; |
1645 | int mant = width/pow(10,exp); |
1646 | int width_metric = mant * pow(10,exp); |
1647 | char *dist_str = NULL; |
1648 | if(width_metric<1000) |
1649 | dist_str = g_strdup_printf("%u m", width_metric); |
1650 | else |
1651 | dist_str = g_strdup_printf("%u km", width_metric/1000); |
1652 | width_metric /= m_per_pix; |
1653 | |
1654 | /* and now the hard part: scale for useful imperial values :-( */ |
1655 | /* try to convert to feet, 1ft == 0.3048 m */ |
1656 | width /= 0.3048; |
1657 | float imp_scale = 0.3048; |
1658 | char *dist_imp_unit = "ft"; |
1659 | |
1660 | if(width >= 100) { |
1661 | /* 1yd == 3 feet */ |
1662 | width /= 3.0; |
1663 | imp_scale *= 3.0; |
1664 | dist_imp_unit = "yd"; |
1665 | |
1666 | if(width >= 1760.0) { |
1667 | /* 1mi == 1760 yd */ |
1668 | width /= 1760.0; |
1669 | imp_scale *= 1760.0; |
1670 | dist_imp_unit = "mi"; |
1671 | } |
1672 | } |
1673 | |
1674 | /* also convert this to full tens/hundreds */ |
1675 | exp = logf(width)*M_LOG10E; |
1676 | mant = width/pow(10,exp); |
1677 | int width_imp = mant * pow(10,exp); |
1678 | char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit); |
1679 | |
1680 | /* convert back to pixels */ |
1681 | width_imp *= imp_scale; |
1682 | width_imp /= m_per_pix; |
1683 | |
1684 | cairo_select_font_face (cr, "Sans", |
1685 | CAIRO_FONT_SLANT_NORMAL, |
1686 | CAIRO_FONT_WEIGHT_BOLD); |
1687 | cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE); |
1688 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
1689 | |
1690 | cairo_text_extents_t extents; |
1691 | cairo_text_extents (cr, dist_str, &extents); |
1692 | |
1693 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
1694 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
1695 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
1696 | cairo_text_path (cr, dist_str); |
1697 | cairo_stroke (cr); |
1698 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
1699 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
1700 | cairo_text_path (cr, dist_str_imp); |
1701 | cairo_stroke (cr); |
1702 | |
1703 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
1704 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
1705 | cairo_show_text (cr, dist_str); |
1706 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
1707 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
1708 | cairo_show_text (cr, dist_str_imp); |
1709 | |
1710 | g_free(dist_str); |
1711 | g_free(dist_str_imp); |
1712 | |
1713 | /* draw white line */ |
1714 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
1715 | cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); |
1716 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3); |
1717 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
1718 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
1719 | cairo_rel_line_to (cr, width_metric, 0); |
1720 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1721 | cairo_stroke(cr); |
1722 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
1723 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1724 | cairo_rel_line_to (cr, width_imp, 0); |
1725 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
1726 | cairo_stroke(cr); |
1727 | |
1728 | /* draw black line */ |
1729 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
1730 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
1731 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
1732 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
1733 | cairo_rel_line_to (cr, width_metric, 0); |
1734 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1735 | cairo_stroke(cr); |
1736 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
1737 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1738 | cairo_rel_line_to (cr, width_imp, 0); |
1739 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
1740 | cairo_stroke(cr); |
1741 | |
1742 | cairo_destroy(cr); |
1743 | FOUT; |
1744 | } |
1745 | #endif |
1746 | |
1747 | static void |
1748 | osd_render_controls(osm_gps_map_osd_t *osd) |
1749 | { |
1750 | FIN; |
1751 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1752 | |
1753 | if(!priv->controls.surface) |
1754 | return; |
1755 | |
1756 | if(priv->controls.rendered |
1757 | #ifdef OSD_GPS_BUTTON |
1758 | && (priv->controls.gps_enabled == (osd->cb != NULL)) |
1759 | #endif |
1760 | ) |
1761 | return; |
1762 | |
1763 | #ifdef OSD_GPS_BUTTON |
1764 | priv->controls.gps_enabled = (osd->cb != NULL); |
1765 | #endif |
1766 | priv->controls.rendered = TRUE; |
1767 | |
1768 | #ifndef OSD_COLOR |
1769 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
1770 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
1771 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
1772 | #endif |
1773 | |
1774 | /* first fill with transparency */ |
1775 | g_assert(priv->controls.surface); |
1776 | cairo_t *cr = cairo_create(priv->controls.surface); |
1777 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1778 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
1779 | cairo_paint(cr); |
1780 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1781 | |
1782 | /* --------- draw zoom and dpad shape shadow ----------- */ |
1783 | #ifdef OSD_SHADOW_ENABLE |
1784 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
1785 | osd_shape_shadow(cr); |
1786 | #ifndef OSD_NO_DPAD |
1787 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
1788 | osd_shape_shadow(cr); |
1789 | #endif |
1790 | #endif |
1791 | |
1792 | /* --------- draw zoom and dpad shape ----------- */ |
1793 | |
1794 | osd_zoom_shape(cr, 1, 1); |
1795 | #ifndef OSD_COLOR |
1796 | osd_shape(cr, &bg, &fg); |
1797 | #else |
1798 | osd_shape(cr); |
1799 | #endif |
1800 | #ifndef OSD_NO_DPAD |
1801 | osd_dpad_shape(cr, 1, 1); |
1802 | #ifndef OSD_COLOR |
1803 | osd_shape(cr, &bg, &fg); |
1804 | #else |
1805 | osd_shape(cr); |
1806 | #endif |
1807 | #endif |
1808 | |
1809 | /* --------- draw zoom and dpad labels --------- */ |
1810 | |
1811 | #ifdef OSD_SHADOW_ENABLE |
1812 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
1813 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1814 | #ifndef OSD_NO_DPAD |
1815 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1816 | #endif |
1817 | cairo_stroke(cr); |
1818 | #ifdef OSD_GPS_BUTTON |
1819 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
1820 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1821 | cairo_stroke(cr); |
1822 | #endif |
1823 | #endif |
1824 | |
1825 | #ifndef OSD_COLOR |
1826 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
1827 | #else |
1828 | osd_labels(cr, Z_RAD/3, TRUE); |
1829 | #endif |
1830 | osd_zoom_labels(cr, 1, 1); |
1831 | #ifndef OSD_NO_DPAD |
1832 | osd_dpad_labels(cr, 1, 1); |
1833 | #endif |
1834 | cairo_stroke(cr); |
1835 | |
1836 | #ifndef OSD_COLOR |
1837 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
1838 | #else |
1839 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
1840 | #endif |
1841 | #ifdef OSD_GPS_BUTTON |
1842 | osd_dpad_gps(cr, 1, 1); |
1843 | #endif |
1844 | cairo_stroke(cr); |
1845 | |
1846 | cairo_destroy(cr); |
1847 | } |
1848 | |
1849 | static void |
1850 | osd_render(osm_gps_map_osd_t *osd) |
1851 | { |
1852 | /* this function is actually called pretty often since the */ |
1853 | /* OSD contents may have changed (due to a coordinate/zoom change). */ |
1854 | /* The different OSD parts have to make sure that they don't */ |
1855 | /* render unneccessarily often and thus waste CPU power */ |
1856 | |
1857 | osd_render_controls(osd); |
1858 | |
1859 | #ifdef OSD_SOURCE_SEL |
1860 | osd_render_source_sel(osd, FALSE); |
1861 | #endif |
1862 | |
1863 | #ifdef OSD_SCALE |
1864 | osd_render_scale(osd); |
1865 | #endif |
1866 | |
1867 | #ifdef OSD_CROSSHAIR |
1868 | osd_render_crosshair(osd); |
1869 | #endif |
1870 | |
1871 | #ifdef OSD_NAV |
1872 | osd_render_nav(osd); |
1873 | #endif |
1874 | |
1875 | #ifdef OSD_COORDINATES |
1876 | osd_render_coordinates(osd); |
1877 | #endif |
1878 | } |
1879 | |
1880 | static void |
1881 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
1882 | { |
1883 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1884 | |
1885 | /* OSD itself uses some off-screen rendering, so check if the */ |
1886 | /* offscreen buffer is present and create it if not */ |
1887 | if(!priv->controls.surface) { |
1888 | /* create overlay ... */ |
1889 | priv->controls.surface = |
1890 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
1891 | |
1892 | priv->controls.rendered = FALSE; |
1893 | #ifdef OSD_GPS_BUTTON |
1894 | priv->controls.gps_enabled = FALSE; |
1895 | #endif |
1896 | |
1897 | #ifdef OSD_SOURCE_SEL |
1898 | /* the initial OSD state is alway not-expanded */ |
1899 | priv->source_sel.surface = |
1900 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1901 | OSD_S_W+2, OSD_S_H+2); |
1902 | priv->source_sel.rendered = FALSE; |
1903 | #endif |
1904 | |
1905 | #ifdef OSD_SCALE |
1906 | priv->scale.surface = |
1907 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1908 | OSD_SCALE_W, OSD_SCALE_H); |
1909 | priv->scale.zoom = -1; |
1910 | #endif |
1911 | |
1912 | #ifdef OSD_CROSSHAIR |
1913 | priv->crosshair.surface = |
1914 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1915 | OSD_CROSSHAIR_W, OSD_CROSSHAIR_H); |
1916 | priv->crosshair.rendered = FALSE; |
1917 | #endif |
1918 | |
1919 | #ifdef OSD_COORDINATES |
1920 | priv->coordinates.surface = |
1921 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1922 | OSD_COORDINATES_W, OSD_COORDINATES_H); |
1923 | |
1924 | priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID; |
1925 | #endif |
1926 | |
1927 | /* ... and render it */ |
1928 | osd_render(osd); |
1929 | } |
1930 | |
1931 | // now draw this onto the original context |
1932 | cairo_t *cr = gdk_cairo_create(drawable); |
1933 | |
1934 | gint x, y; |
1935 | |
1936 | #ifdef OSD_SCALE |
1937 | x = OSD_X; |
1938 | y = -OSD_Y; |
1939 | if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W; |
1940 | if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H; |
1941 | |
1942 | cairo_set_source_surface(cr, priv->scale.surface, x, y); |
1943 | cairo_paint(cr); |
1944 | #endif |
1945 | |
1946 | #ifdef OSD_CROSSHAIR |
1947 | x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2; |
1948 | y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2; |
1949 | |
1950 | cairo_set_source_surface(cr, priv->crosshair.surface, x, y); |
1951 | cairo_paint(cr); |
1952 | #endif |
1953 | |
1954 | #ifdef OSD_NAV |
1955 | if(priv->nav.surface) { |
1956 | x = OSD_X; |
1957 | if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W; |
1958 | y = (osd->widget->allocation.height - OSD_NAV_H)/2; |
1959 | |
1960 | cairo_set_source_surface(cr, priv->nav.surface, x, y); |
1961 | cairo_paint(cr); |
1962 | } |
1963 | #endif |
1964 | |
1965 | #ifdef OSD_COORDINATES |
1966 | x = -OSD_X; |
1967 | y = -OSD_Y; |
1968 | if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W; |
1969 | if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H; |
1970 | |
1971 | cairo_set_source_surface(cr, priv->coordinates.surface, x, y); |
1972 | cairo_paint(cr); |
1973 | #endif |
1974 | |
1975 | #ifdef OSD_BALLOON |
1976 | if(priv->balloon.surface) { |
1977 | |
1978 | /* convert given lat lon into screen coordinates */ |
1979 | gint x, y; |
1980 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
1981 | priv->balloon.lat, priv->balloon.lon, |
1982 | &x, &y); |
1983 | |
1984 | /* check if balloon needs to be rerendered */ |
1985 | osd_render_balloon(osd); |
1986 | |
1987 | cairo_set_source_surface(cr, priv->balloon.surface, |
1988 | x + priv->balloon.offset_x, |
1989 | y + priv->balloon.offset_y); |
1990 | cairo_paint(cr); |
1991 | } |
1992 | #endif |
1993 | |
1994 | x = OSD_X; |
1995 | if(x < 0) |
1996 | x += osd->widget->allocation.width - OSD_W; |
1997 | |
1998 | y = OSD_Y; |
1999 | if(y < 0) |
2000 | y += osd->widget->allocation.height - OSD_H; |
2001 | |
2002 | cairo_set_source_surface(cr, priv->controls.surface, x, y); |
2003 | cairo_paint(cr); |
2004 | |
2005 | #ifdef OSD_SOURCE_SEL |
2006 | if(!priv->source_sel.handler_id) { |
2007 | /* the OSD source selection is not being animated */ |
2008 | if(!priv->source_sel.expanded) |
2009 | x = osd->widget->allocation.width - OSD_S_W; |
2010 | else |
2011 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
2012 | } else |
2013 | x = priv->source_sel.shift; |
2014 | |
2015 | y = OSD_S_Y; |
2016 | if(OSD_S_Y < 0) { |
2017 | if(!priv->source_sel.expanded) |
2018 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
2019 | else |
2020 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
2021 | } |
2022 | |
2023 | cairo_set_source_surface(cr, priv->source_sel.surface, x, y); |
2024 | cairo_paint(cr); |
2025 | #endif |
2026 | |
2027 | cairo_destroy(cr); |
2028 | FOUT; |
2029 | } |
2030 | |
2031 | static void |
2032 | osd_free(osm_gps_map_osd_t *osd) |
2033 | { |
2034 | FIN; |
2035 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
2036 | |
2037 | if (priv->controls.surface) |
2038 | cairo_surface_destroy(priv->controls.surface); |
2039 | |
2040 | #ifdef OSD_SOURCE_SEL |
2041 | if(priv->source_sel.handler_id) |
2042 | gtk_timeout_remove(priv->source_sel.handler_id); |
2043 | |
2044 | if (priv->source_sel.surface) |
2045 | cairo_surface_destroy(priv->source_sel.surface); |
2046 | #endif |
2047 | |
2048 | #ifdef OSD_SCALE |
2049 | if (priv->scale.surface) |
2050 | cairo_surface_destroy(priv->scale.surface); |
2051 | #endif |
2052 | |
2053 | #ifdef OSD_CROSSHAIR |
2054 | if (priv->crosshair.surface) |
2055 | cairo_surface_destroy(priv->crosshair.surface); |
2056 | #endif |
2057 | |
2058 | #ifdef OSD_NAV |
2059 | if (priv->nav.surface) |
2060 | cairo_surface_destroy(priv->nav.surface); |
2061 | #endif |
2062 | |
2063 | #ifdef OSD_COORDINATES |
2064 | if (priv->coordinates.surface) |
2065 | cairo_surface_destroy(priv->coordinates.surface); |
2066 | #endif |
2067 | |
2068 | #ifdef OSD_BALLOON |
2069 | if (priv->balloon.surface) |
2070 | cairo_surface_destroy(priv->balloon.surface); |
2071 | #endif |
2072 | |
2073 | g_free(priv); |
2074 | FOUT; |
2075 | } |
2076 | |
2077 | static gboolean |
2078 | osd_busy(osm_gps_map_osd_t *osd) |
2079 | { |
2080 | FIN; |
2081 | #ifdef OSD_SOURCE_SEL |
2082 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
2083 | return (priv->source_sel.handler_id != 0); |
2084 | #else |
2085 | return FALSE; |
2086 | #endif |
2087 | } |
2088 | |
2089 | static osd_button_t |
2090 | osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) { |
2091 | FIN; |
2092 | return osd_check_int(osd, TRUE, down, x, y); |
2093 | } |
2094 | |
2095 | static osm_gps_map_osd_t osd_classic = { |
2096 | .widget = NULL, |
2097 | |
2098 | .draw = osd_draw, |
2099 | .check = osd_check, |
2100 | .render = osd_render, |
2101 | .free = osd_free, |
2102 | .busy = osd_busy, |
2103 | |
2104 | .cb = NULL, |
2105 | .data = NULL, |
2106 | |
2107 | .priv = NULL |
2108 | }; |
2109 | |
2110 | /* this is the only function that's externally visible */ |
2111 | void |
2112 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
2113 | { |
2114 | FIN; |
2115 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
2116 | |
2117 | #ifdef OSD_BALLOON |
2118 | priv->balloon.lat = OSM_GPS_MAP_INVALID; |
2119 | priv->balloon.lon = OSM_GPS_MAP_INVALID; |
2120 | #endif |
2121 | |
2122 | osd_classic.priv = priv; |
2123 | |
2124 | osm_gps_map_register_osd(map, &osd_classic); |
2125 | FOUT; |
2126 | } |
2127 | |
2128 | #ifdef OSD_GPS_BUTTON |
2129 | /* below are osd specific functions which aren't used by osm-gps-map */ |
2130 | /* but instead are to be used by the main application */ |
2131 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
2132 | gpointer data) { |
2133 | FIN; |
2134 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
2135 | g_return_if_fail (osd); |
2136 | |
2137 | osd->cb = cb; |
2138 | osd->data = data; |
2139 | |
2140 | /* this may have changed the state of the gps button */ |
2141 | /* we thus re-render the overlay */ |
2142 | osd->render(osd); |
2143 | |
2144 | osm_gps_map_redraw(map); |
2145 | FOUT; |
2146 | } |
2147 | #endif |
2148 | |
2149 | osd_button_t |
2150 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
2151 | FIN; |
2152 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
2153 | g_return_val_if_fail (osd, OSD_NONE); |
2154 | |
2155 | return osd_check_int(osd, FALSE, TRUE, x, y); |
2156 | } |