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