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