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1 | /* -*- Mode: C; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4 -*- */ |
2 | /* vim:set et sw=4 ts=4 cino=t0,(0: */ |
3 | /* |
4 | * Copyright (C) Till Harbaum 2009 <till@harbaum.org> |
5 | * |
6 | * osm-gps-map is free software: you can redistribute it and/or modify it |
7 | * under the terms of the GNU General Public License as published by the |
8 | * Free Software Foundation, either version 3 of the License, or |
9 | * (at your option) any later version. |
10 | * |
11 | * osm-gps-map is distributed in the hope that it will be useful, but |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
14 | * See the GNU General Public License for more details. |
15 | * |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program. If not, see <http://www.gnu.org/licenses/>. |
18 | */ |
19 | |
20 | #include "config.h" |
21 | #include <stdlib.h> // abs |
22 | #include <string.h> |
23 | #include <math.h> // M_PI/cos() |
24 | |
25 | /* parameters that can be overwritten from the config file: */ |
26 | /* OSD_DIAMETER */ |
27 | /* OSD_X, OSD_Y */ |
28 | |
29 | #ifndef USE_CAIRO |
30 | #error "OSD control display lacks a non-cairo implementation!" |
31 | #endif |
32 | |
33 | #include <cairo.h> |
34 | |
35 | #include "osm-gps-map.h" |
36 | #include "converter.h" |
37 | #include "osm-gps-map-osd-classic.h" |
38 | |
39 | //the osd controls |
40 | typedef struct { |
41 | /* the offscreen representation of the OSD */ |
42 | struct { |
43 | cairo_surface_t *surface; |
44 | gboolean rendered; |
45 | #ifdef OSD_GPS_BUTTON |
46 | gboolean gps_enabled; |
47 | #endif |
48 | } controls; |
49 | |
50 | #ifdef OSD_BALLOON |
51 | //a balloon with additional info |
52 | struct { |
53 | cairo_surface_t *surface; |
54 | int orientation, offset_x, offset_y; |
55 | |
56 | gboolean just_created; |
57 | float lat, lon; |
58 | OsmGpsMapRect_t rect; |
59 | |
60 | /* function called to have the user app draw the contents */ |
61 | OsmGpsMapBalloonCallback cb; |
62 | gpointer data; |
63 | } balloon; |
64 | #endif |
65 | |
66 | #ifdef OSD_SCALE |
67 | struct { |
68 | cairo_surface_t *surface; |
69 | int zoom; |
70 | } scale; |
71 | #endif |
72 | |
73 | #ifdef OSD_CROSSHAIR |
74 | struct { |
75 | cairo_surface_t *surface; |
76 | gboolean rendered; |
77 | } crosshair; |
78 | #endif |
79 | |
80 | #ifdef OSD_NAV |
81 | struct { |
82 | cairo_surface_t *surface; |
83 | float lat, lon; |
84 | char *name; |
85 | } nav; |
86 | #endif |
87 | |
88 | #ifdef OSD_COORDINATES |
89 | struct { |
90 | cairo_surface_t *surface; |
91 | float lat, lon; |
92 | } coordinates; |
93 | #endif |
94 | |
95 | #ifdef OSD_SOURCE_SEL |
96 | struct { |
97 | /* values to handle the "source" menu */ |
98 | cairo_surface_t *surface; |
99 | gboolean expanded; |
100 | gint shift, dir, count; |
101 | gint handler_id; |
102 | gint width, height; |
103 | gboolean rendered; |
104 | } source_sel; |
105 | #endif |
106 | |
107 | } osd_priv_t; |
108 | |
109 | #ifdef OSD_BALLOON |
110 | /* most visual effects are hardcoded by now, but may be made */ |
111 | /* available via properties later */ |
112 | #ifndef BALLOON_AREA_WIDTH |
113 | #define BALLOON_AREA_WIDTH 290 |
114 | #endif |
115 | #ifndef BALLOON_AREA_HEIGHT |
116 | #define BALLOON_AREA_HEIGHT 75 |
117 | #endif |
118 | #ifndef BALLOON_CORNER_RADIUS |
119 | #define BALLOON_CORNER_RADIUS 10 |
120 | #endif |
121 | |
122 | #define BALLOON_BORDER (BALLOON_CORNER_RADIUS/2) |
123 | #define BALLOON_WIDTH (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER) |
124 | #define BALLOON_HEIGHT (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER) |
125 | #define BALLOON_TRANSPARENCY 0.8 |
126 | #define POINTER_HEIGHT 20 |
127 | #define POINTER_FOOT_WIDTH 20 |
128 | #define POINTER_OFFSET (BALLOON_CORNER_RADIUS*3/4) |
129 | #define BALLOON_SHADOW (BALLOON_CORNER_RADIUS/2) |
130 | #define BALLOON_SHADOW_TRANSPARENCY 0.2 |
131 | |
132 | #define BALLOON_W (BALLOON_WIDTH + BALLOON_SHADOW) |
133 | #define BALLOON_H (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW) |
134 | |
135 | #define CLOSE_BUTTON_RADIUS (BALLOON_CORNER_RADIUS) |
136 | |
137 | |
138 | /* draw the bubble shape. this is used twice, once for the shape and once */ |
139 | /* for the shadow */ |
140 | static void |
141 | osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1, |
142 | gboolean bottom, int px, int py, int px0, int px1) { |
143 | |
144 | cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS); |
145 | cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS, |
146 | BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2); |
147 | if(!bottom) { |
148 | /* insert top pointer */ |
149 | cairo_line_to (cr, px1, y0); |
150 | cairo_line_to (cr, px, py); |
151 | cairo_line_to (cr, px0, y0); |
152 | } |
153 | |
154 | cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0); |
155 | cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS, |
156 | BALLOON_CORNER_RADIUS, -M_PI/2, 0); |
157 | cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS); |
158 | cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS, |
159 | BALLOON_CORNER_RADIUS, 0, M_PI/2); |
160 | if(bottom) { |
161 | /* insert bottom pointer */ |
162 | cairo_line_to (cr, px0, y1); |
163 | cairo_line_to (cr, px, py); |
164 | cairo_line_to (cr, px1, y1); |
165 | } |
166 | |
167 | cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1); |
168 | cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS, |
169 | BALLOON_CORNER_RADIUS, M_PI/2, M_PI); |
170 | |
171 | cairo_close_path (cr); |
172 | } |
173 | |
174 | static void |
175 | osd_render_balloon(osm_gps_map_osd_t *osd) { |
176 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
177 | |
178 | /* get zoom */ |
179 | gint zoom; |
180 | g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL); |
181 | |
182 | /* ------- convert given coordinate into screen position --------- */ |
183 | gint xs, ys; |
184 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
185 | priv->balloon.lat, priv->balloon.lon, |
186 | &xs, &ys); |
187 | |
188 | gint x0 = 1, y0 = 1; |
189 | |
190 | /* check position of this relative to screen center to determine */ |
191 | /* pointer direction ... */ |
192 | int pointer_x, pointer_x0, pointer_x1; |
193 | int pointer_y; |
194 | |
195 | /* ... and calculate position */ |
196 | int orientation = 0; |
197 | if(xs > osd->widget->allocation.width/2) { |
198 | priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET; |
199 | pointer_x = x0 - priv->balloon.offset_x; |
200 | pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET); |
201 | pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH; |
202 | orientation |= 1; |
203 | } else { |
204 | priv->balloon.offset_x = -POINTER_OFFSET; |
205 | pointer_x = x0 - priv->balloon.offset_x; |
206 | pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET); |
207 | pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH; |
208 | } |
209 | |
210 | gboolean bottom = FALSE; |
211 | if(ys > osd->widget->allocation.height/2) { |
212 | priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT; |
213 | pointer_y = y0 - priv->balloon.offset_y; |
214 | bottom = TRUE; |
215 | orientation |= 2; |
216 | } else { |
217 | priv->balloon.offset_y = 0; |
218 | pointer_y = y0 - priv->balloon.offset_y; |
219 | y0 += POINTER_HEIGHT; |
220 | } |
221 | |
222 | /* if required orientation equals current one, then don't render */ |
223 | /* anything */ |
224 | if(orientation == priv->balloon.orientation) |
225 | return; |
226 | |
227 | priv->balloon.orientation = orientation; |
228 | |
229 | /* calculate bottom/right of box */ |
230 | int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT; |
231 | |
232 | /* save balloon screen coordinates for later use */ |
233 | priv->balloon.rect.x = x0 + BALLOON_BORDER; |
234 | priv->balloon.rect.y = y0 + BALLOON_BORDER; |
235 | priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER; |
236 | priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER; |
237 | |
238 | cairo_t *cr = cairo_create(priv->balloon.surface); |
239 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
240 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
241 | cairo_paint(cr); |
242 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
243 | |
244 | /* --------- draw shadow --------------- */ |
245 | osm_gps_map_draw_balloon_shape (cr, |
246 | x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW, |
247 | x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW, |
248 | bottom, pointer_x, pointer_y, |
249 | pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW); |
250 | |
251 | cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY); |
252 | cairo_fill_preserve (cr); |
253 | cairo_set_source_rgba (cr, 1, 0, 0, 1.0); |
254 | cairo_set_line_width (cr, 0); |
255 | cairo_stroke (cr); |
256 | |
257 | /* --------- draw main shape ----------- */ |
258 | osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1, |
259 | bottom, pointer_x, pointer_y, pointer_x0, pointer_x1); |
260 | |
261 | cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY); |
262 | cairo_fill_preserve (cr); |
263 | cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY); |
264 | cairo_set_line_width (cr, 1); |
265 | cairo_stroke (cr); |
266 | |
267 | if (priv->balloon.cb) { |
268 | /* clip in case application tries to draw in */ |
269 | /* exceed of the balloon */ |
270 | cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y, |
271 | priv->balloon.rect.w, priv->balloon.rect.h); |
272 | cairo_clip (cr); |
273 | cairo_new_path (cr); /* current path is not |
274 | consumed by cairo_clip() */ |
275 | |
276 | priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data); |
277 | } |
278 | |
279 | cairo_destroy(cr); |
280 | } |
281 | |
282 | /* return true if balloon is being displayed and if */ |
283 | /* the given coordinate is within this balloon */ |
284 | static gboolean |
285 | osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) |
286 | { |
287 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
288 | |
289 | if(!priv->balloon.surface) |
290 | return FALSE; |
291 | |
292 | gint xs, ys; |
293 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
294 | priv->balloon.lat, priv->balloon.lon, |
295 | &xs, &ys); |
296 | |
297 | xs += priv->balloon.rect.x + priv->balloon.offset_x; |
298 | ys += priv->balloon.rect.y + priv->balloon.offset_y; |
299 | |
300 | gboolean is_in = |
301 | (x > xs) && (x < xs + priv->balloon.rect.w) && |
302 | (y > ys) && (y < ys + priv->balloon.rect.h); |
303 | |
304 | /* handle the fact that the balloon may have been created by the */ |
305 | /* button down event */ |
306 | if(!is_in && !down && !priv->balloon.just_created) { |
307 | /* the user actually clicked outside the balloon */ |
308 | |
309 | /* close the balloon! */ |
310 | osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget)); |
311 | } |
312 | |
313 | return is_in; |
314 | } |
315 | |
316 | void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) { |
317 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
318 | |
319 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
320 | g_return_if_fail (osd); |
321 | |
322 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
323 | g_return_if_fail (priv); |
324 | |
325 | if(priv->balloon.surface) { |
326 | cairo_surface_destroy(priv->balloon.surface); |
327 | priv->balloon.surface = NULL; |
328 | priv->balloon.lat = OSM_GPS_MAP_INVALID; |
329 | priv->balloon.lon = OSM_GPS_MAP_INVALID; |
330 | } |
331 | osm_gps_map_redraw(map); |
332 | } |
333 | |
334 | void |
335 | osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude, |
336 | OsmGpsMapBalloonCallback cb, gpointer data) { |
337 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
338 | |
339 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
340 | g_return_if_fail (osd); |
341 | |
342 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
343 | g_return_if_fail (priv); |
344 | |
345 | osm_gps_map_osd_clear_balloon (map); |
346 | |
347 | /* allocate balloon surface */ |
348 | priv->balloon.surface = |
349 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
350 | BALLOON_W+2, BALLOON_H+2); |
351 | |
352 | priv->balloon.lat = latitude; |
353 | priv->balloon.lon = longitude; |
354 | priv->balloon.cb = cb; |
355 | priv->balloon.data = data; |
356 | priv->balloon.just_created = TRUE; |
357 | |
358 | priv->balloon.orientation = -1; |
359 | |
360 | osd_render_balloon(osd); |
361 | |
362 | osm_gps_map_redraw(map); |
363 | } |
364 | |
365 | #endif // OSD_BALLOON |
366 | |
367 | /* position and extent of bounding box */ |
368 | #ifndef OSD_X |
369 | #define OSD_X (10) |
370 | #endif |
371 | |
372 | #ifndef OSD_Y |
373 | #define OSD_Y (10) |
374 | #endif |
375 | |
376 | /* parameters of the direction shape */ |
377 | #ifndef OSD_DIAMETER |
378 | #define D_RAD (30) // diameter of dpad |
379 | #else |
380 | #define D_RAD (OSD_DIAMETER) |
381 | #endif |
382 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
383 | #define D_LEN (D_RAD/4) // length of arrow |
384 | #define D_WID (D_LEN) // width of arrow |
385 | |
386 | /* parameters of the "zoom" pad */ |
387 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
388 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
389 | |
390 | #ifdef OSD_SHADOW_ENABLE |
391 | /* shadow also depends on control size */ |
392 | #define OSD_SHADOW (D_RAD/6) |
393 | #else |
394 | #define OSD_SHADOW (0) |
395 | #endif |
396 | |
397 | /* normally the GPS button is in the center of the dpad. if there's */ |
398 | /* no dpad it will go into the zoom area */ |
399 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
400 | #define Z_GPS 1 |
401 | #else |
402 | #define Z_GPS 0 |
403 | #endif |
404 | |
405 | /* total width and height of controls incl. shadow */ |
406 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
407 | #if !Z_GPS |
408 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
409 | #else |
410 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
411 | #endif |
412 | |
413 | #ifdef OSD_SHADOW_ENABLE |
414 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
415 | #endif |
416 | |
417 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
418 | |
419 | #define Z_MID (Z_TOP + Z_RAD) |
420 | #define Z_BOT (Z_MID + Z_RAD) |
421 | #define Z_LEFT (Z_RAD) |
422 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
423 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
424 | |
425 | /* create the cairo shape used for the zoom buttons */ |
426 | static void |
427 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
428 | { |
429 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
430 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
431 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
432 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
433 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
434 | } |
435 | |
436 | /* ------------------- color/shadow functions ----------------- */ |
437 | |
438 | #ifndef OSD_COLOR |
439 | /* if no color has been specified we just use the gdks default colors */ |
440 | static void |
441 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
442 | GdkColor *fg, GdkColor *disabled) { |
443 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
444 | else gdk_cairo_set_source_color(cr, disabled); |
445 | cairo_set_line_width (cr, width); |
446 | } |
447 | #else |
448 | static void |
449 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
450 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
451 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
452 | cairo_set_line_width (cr, width); |
453 | } |
454 | #endif |
455 | |
456 | #ifdef OSD_SHADOW_ENABLE |
457 | static void |
458 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
459 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
460 | cairo_set_line_width (cr, width); |
461 | } |
462 | #endif |
463 | |
464 | #ifndef OSD_NO_DPAD |
465 | /* create the cairo shape used for the dpad */ |
466 | static void |
467 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
468 | { |
469 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
470 | } |
471 | #endif |
472 | |
473 | #ifdef OSD_SHADOW_ENABLE |
474 | static void |
475 | osd_shape_shadow(cairo_t *cr) { |
476 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
477 | cairo_fill (cr); |
478 | cairo_stroke (cr); |
479 | } |
480 | #endif |
481 | |
482 | #ifndef OSD_COLOR |
483 | /* if no color has been specified we just use the gdks default colors */ |
484 | static void |
485 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
486 | gdk_cairo_set_source_color(cr, bg); |
487 | cairo_fill_preserve (cr); |
488 | gdk_cairo_set_source_color(cr, fg); |
489 | cairo_set_line_width (cr, 1); |
490 | cairo_stroke (cr); |
491 | } |
492 | #else |
493 | static void |
494 | osd_shape(cairo_t *cr) { |
495 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
496 | cairo_fill_preserve (cr); |
497 | cairo_set_source_rgb (cr, OSD_COLOR); |
498 | cairo_set_line_width (cr, 1); |
499 | cairo_stroke (cr); |
500 | } |
501 | #endif |
502 | |
503 | |
504 | static gboolean |
505 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
506 | { |
507 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
508 | } |
509 | |
510 | #ifndef OSD_NO_DPAD |
511 | /* check whether x/y is within the dpad */ |
512 | static osd_button_t |
513 | osd_check_dpad(gint x, gint y) |
514 | { |
515 | /* within entire dpad circle */ |
516 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
517 | { |
518 | /* convert into position relative to dpads centre */ |
519 | x -= D_RAD; |
520 | y -= D_RAD; |
521 | |
522 | #ifdef OSD_GPS_BUTTON |
523 | /* check for dpad center goes here! */ |
524 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
525 | return OSD_GPS; |
526 | #endif |
527 | |
528 | if( y < 0 && abs(x) < abs(y)) |
529 | return OSD_UP; |
530 | |
531 | if( y > 0 && abs(x) < abs(y)) |
532 | return OSD_DOWN; |
533 | |
534 | if( x < 0 && abs(y) < abs(x)) |
535 | return OSD_LEFT; |
536 | |
537 | if( x > 0 && abs(y) < abs(x)) |
538 | return OSD_RIGHT; |
539 | |
540 | return OSD_BG; |
541 | } |
542 | return OSD_NONE; |
543 | } |
544 | #endif |
545 | |
546 | /* check whether x/y is within the zoom pads */ |
547 | static osd_button_t |
548 | osd_check_zoom(gint x, gint y) { |
549 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
550 | |
551 | /* within circle around (-) label */ |
552 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
553 | return OSD_OUT; |
554 | |
555 | /* within circle around (+) label */ |
556 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
557 | return OSD_IN; |
558 | |
559 | #if Z_GPS == 1 |
560 | /* within square around center */ |
561 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
562 | return OSD_GPS; |
563 | #endif |
564 | |
565 | /* between center of (-) button and center of entire zoom control area */ |
566 | if(x > OSD_LEFT && x < D_RAD) |
567 | return OSD_OUT; |
568 | |
569 | /* between center of (+) button and center of entire zoom control area */ |
570 | if(x < OSD_RIGHT && x > D_RAD) |
571 | return OSD_IN; |
572 | } |
573 | |
574 | return OSD_NONE; |
575 | } |
576 | |
577 | #ifdef OSD_SOURCE_SEL |
578 | |
579 | /* place source selection at right border */ |
580 | #define OSD_S_RAD (Z_RAD) |
581 | #define OSD_S_X (-OSD_X) |
582 | #define OSD_S_Y (OSD_Y) |
583 | #define OSD_S_PW (2 * Z_RAD) |
584 | #define OSD_S_W (OSD_S_PW) |
585 | #define OSD_S_PH (2 * Z_RAD) |
586 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
587 | |
588 | /* size of usable area when expanded */ |
589 | #define OSD_S_AREA_W (priv->source_sel.width) |
590 | #define OSD_S_AREA_H (priv->source_sel.height) |
591 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
592 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
593 | |
594 | /* internal value to draw the arrow on the "puller" */ |
595 | #define OSD_S_D0 (OSD_S_RAD/2) |
596 | #ifndef OSD_FONT_SIZE |
597 | #define OSD_FONT_SIZE 16.0 |
598 | #endif |
599 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
600 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
601 | |
602 | /* draw the shape of the source selection OSD, either only the puller (not expanded) */ |
603 | /* or the entire menu incl. the puller (expanded) */ |
604 | static void |
605 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
606 | if(!priv->source_sel.expanded) { |
607 | /* just draw the puller */ |
608 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
609 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
610 | cairo_line_to (cr, x + OSD_S_PW, y); |
611 | } else { |
612 | /* draw the puller and the area itself */ |
613 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
614 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
615 | if(OSD_S_Y > 0) { |
616 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
617 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
618 | } else { |
619 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
620 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
621 | cairo_line_to (cr, x + OSD_S_PW, y); |
622 | } |
623 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
624 | cairo_close_path (cr); |
625 | } |
626 | } |
627 | |
628 | static void |
629 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
630 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
631 | |
632 | int py = offset + OSD_S_RAD - OSD_S_D0; |
633 | |
634 | if(!priv->source_sel.expanded) { |
635 | /* draw the "puller" open (<) arrow */ |
636 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
637 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
638 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
639 | } else { |
640 | if(OSD_S_Y < 0) |
641 | py += OSD_S_AREA_H - OSD_S_PH; |
642 | |
643 | /* draw the "puller" close (>) arrow */ |
644 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
645 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
646 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
647 | cairo_stroke(cr); |
648 | |
649 | /* don't draw a shadow for the text content */ |
650 | if(offset == 1) { |
651 | gint source; |
652 | g_object_get(osd->widget, "map-source", &source, NULL); |
653 | |
654 | cairo_select_font_face (cr, "Sans", |
655 | CAIRO_FONT_SLANT_NORMAL, |
656 | CAIRO_FONT_WEIGHT_BOLD); |
657 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
658 | |
659 | int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) / |
660 | OSM_GPS_MAP_SOURCE_LAST; |
661 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
662 | cairo_text_extents_t extents; |
663 | const char *src = osm_gps_map_source_get_friendly_name(i); |
664 | cairo_text_extents (cr, src, &extents); |
665 | |
666 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
667 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
668 | |
669 | /* draw filled rectangle if selected */ |
670 | if(source == i) { |
671 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
672 | y - OSD_TEXT_SKIP, |
673 | priv->source_sel.width - OSD_TEXT_BORDER, |
674 | step + OSD_TEXT_SKIP); |
675 | cairo_fill(cr); |
676 | |
677 | /* temprarily draw with background color */ |
678 | #ifndef OSD_COLOR |
679 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
680 | gdk_cairo_set_source_color(cr, &bg); |
681 | #else |
682 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
683 | #endif |
684 | } |
685 | |
686 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
687 | cairo_show_text (cr, src); |
688 | |
689 | /* restore color */ |
690 | if(source == i) { |
691 | #ifndef OSD_COLOR |
692 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
693 | gdk_cairo_set_source_color(cr, &fg); |
694 | #else |
695 | cairo_set_source_rgb (cr, OSD_COLOR); |
696 | #endif |
697 | } |
698 | } |
699 | } |
700 | } |
701 | } |
702 | |
703 | static void |
704 | osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) { |
705 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
706 | |
707 | if(priv->source_sel.rendered && !force_rerender) |
708 | return; |
709 | |
710 | priv->source_sel.rendered = TRUE; |
711 | |
712 | #ifndef OSD_COLOR |
713 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
714 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
715 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
716 | #endif |
717 | |
718 | /* draw source selector */ |
719 | cairo_t *cr = cairo_create(priv->source_sel.surface); |
720 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
721 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
722 | cairo_paint(cr); |
723 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
724 | |
725 | #ifdef OSD_SHADOW_ENABLE |
726 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
727 | osd_shape_shadow(cr); |
728 | #endif |
729 | |
730 | osd_source_shape(priv, cr, 1, 1); |
731 | #ifndef OSD_COLOR |
732 | osd_shape(cr, &bg, &fg); |
733 | #else |
734 | osd_shape(cr); |
735 | #endif |
736 | |
737 | #ifdef OSD_SHADOW_ENABLE |
738 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
739 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
740 | cairo_stroke (cr); |
741 | #endif |
742 | #ifndef OSD_COLOR |
743 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
744 | #else |
745 | osd_labels(cr, Z_RAD/3, TRUE); |
746 | #endif |
747 | osd_source_content(osd, cr, 1); |
748 | cairo_stroke (cr); |
749 | |
750 | cairo_destroy(cr); |
751 | } |
752 | |
753 | /* re-allocate the buffer used to draw the menu. This is used */ |
754 | /* to collapse/expand the buffer */ |
755 | static void |
756 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
757 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
758 | |
759 | /* re-allocate offscreen bitmap */ |
760 | g_assert (priv->source_sel.surface); |
761 | |
762 | int w = OSD_S_W, h = OSD_S_H; |
763 | if(priv->source_sel.expanded) { |
764 | cairo_text_extents_t extents; |
765 | |
766 | /* determine content size */ |
767 | cairo_t *cr = cairo_create(priv->source_sel.surface); |
768 | cairo_select_font_face (cr, "Sans", |
769 | CAIRO_FONT_SLANT_NORMAL, |
770 | CAIRO_FONT_WEIGHT_BOLD); |
771 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
772 | |
773 | /* calculate menu size */ |
774 | int i, max_h = 0, max_w = 0; |
775 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
776 | const char *src = osm_gps_map_source_get_friendly_name(i); |
777 | cairo_text_extents (cr, src, &extents); |
778 | |
779 | if(extents.width > max_w) max_w = extents.width; |
780 | if(extents.height > max_h) max_h = extents.height; |
781 | } |
782 | cairo_destroy(cr); |
783 | |
784 | priv->source_sel.width = max_w + 2*OSD_TEXT_BORDER; |
785 | priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST * |
786 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
787 | |
788 | w = OSD_S_EXP_W; |
789 | h = OSD_S_EXP_H; |
790 | } |
791 | |
792 | cairo_surface_destroy(priv->source_sel.surface); |
793 | priv->source_sel.surface = |
794 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
795 | |
796 | osd_render_source_sel(osd, TRUE); |
797 | } |
798 | |
799 | #define OSD_HZ 15 |
800 | #define OSD_TIME 500 |
801 | |
802 | static gboolean osd_source_animate(gpointer data) { |
803 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
804 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
805 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
806 | gboolean done = FALSE; |
807 | priv->source_sel.count += priv->source_sel.dir; |
808 | |
809 | /* shifting in */ |
810 | if(priv->source_sel.dir < 0) { |
811 | if(priv->source_sel.count <= 0) { |
812 | priv->source_sel.count = 0; |
813 | done = TRUE; |
814 | } |
815 | } else { |
816 | if(priv->source_sel.count >= 1000) { |
817 | priv->source_sel.expanded = FALSE; |
818 | osd_source_reallocate(osd); |
819 | |
820 | priv->source_sel.count = 1000; |
821 | done = TRUE; |
822 | } |
823 | } |
824 | |
825 | |
826 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
827 | |
828 | /* nice sinoid mapping */ |
829 | float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2; |
830 | priv->source_sel.shift = |
831 | (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
832 | m * diff; |
833 | |
834 | /* make sure the screen is updated */ |
835 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
836 | |
837 | /* stop animation if done */ |
838 | if(done) |
839 | priv->source_sel.handler_id = 0; |
840 | |
841 | return !done; |
842 | } |
843 | |
844 | /* switch between expand and collapse mode of source selection */ |
845 | static void |
846 | osd_source_toggle(osm_gps_map_osd_t *osd) |
847 | { |
848 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
849 | |
850 | /* ignore clicks while animation is running */ |
851 | if(priv->source_sel.handler_id) |
852 | return; |
853 | |
854 | /* expand immediately, collapse is handle at the end of the */ |
855 | /* collapse animation */ |
856 | if(!priv->source_sel.expanded) { |
857 | priv->source_sel.expanded = TRUE; |
858 | osd_source_reallocate(osd); |
859 | |
860 | priv->source_sel.count = 1000; |
861 | priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W; |
862 | priv->source_sel.dir = -1000/OSD_HZ; |
863 | } else { |
864 | priv->source_sel.count = 0; |
865 | priv->source_sel.shift = osd->widget->allocation.width - |
866 | OSD_S_EXP_W + OSD_S_X; |
867 | priv->source_sel.dir = +1000/OSD_HZ; |
868 | } |
869 | |
870 | /* start timer to handle animation */ |
871 | priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, |
872 | osd_source_animate, osd); |
873 | } |
874 | |
875 | /* check if the user clicked inside the source selection area */ |
876 | static osd_button_t |
877 | osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) { |
878 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
879 | |
880 | if(!priv->source_sel.expanded) |
881 | x -= osd->widget->allocation.width - OSD_S_W; |
882 | else |
883 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
884 | |
885 | if(OSD_S_Y > 0) |
886 | y -= OSD_S_Y; |
887 | else |
888 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
889 | |
890 | /* within square around puller? */ |
891 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
892 | /* really within puller shape? */ |
893 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
894 | /* expand source selector */ |
895 | if(down) |
896 | osd_source_toggle(osd); |
897 | |
898 | /* tell upper layers that user clicked some background element */ |
899 | /* of the OSD */ |
900 | return OSD_BG; |
901 | } |
902 | } |
903 | |
904 | /* check for clicks into data area */ |
905 | if(priv->source_sel.expanded && !priv->source_sel.handler_id) { |
906 | /* re-adjust from puller top to content top */ |
907 | if(OSD_S_Y < 0) |
908 | y += OSD_S_EXP_H - OSD_S_PH; |
909 | |
910 | if(x > OSD_S_PW && |
911 | x < OSD_S_PW + OSD_S_EXP_W && |
912 | y > 0 && |
913 | y < OSD_S_EXP_H) { |
914 | |
915 | int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) |
916 | / OSM_GPS_MAP_SOURCE_LAST; |
917 | |
918 | y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP; |
919 | y /= step; |
920 | y += 1; |
921 | |
922 | if(down) { |
923 | gint old = 0; |
924 | g_object_get(osd->widget, "map-source", &old, NULL); |
925 | |
926 | if(y > OSM_GPS_MAP_SOURCE_NULL && |
927 | y <= OSM_GPS_MAP_SOURCE_LAST && |
928 | old != y) { |
929 | g_object_set(osd->widget, "map-source", y, NULL); |
930 | |
931 | osd_render_source_sel(osd, TRUE); |
932 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
933 | } |
934 | } |
935 | |
936 | /* return "clicked in OSD background" to prevent further */ |
937 | /* processing by application */ |
938 | return OSD_BG; |
939 | } |
940 | } |
941 | |
942 | return OSD_NONE; |
943 | } |
944 | #endif // OSD_SOURCE_SEL |
945 | |
946 | static osd_button_t |
947 | osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) { |
948 | osd_button_t but = OSD_NONE; |
949 | |
950 | #ifdef OSD_BALLOON |
951 | if(down) { |
952 | /* needed to handle balloons that are created at click */ |
953 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
954 | priv->balloon.just_created = FALSE; |
955 | } |
956 | #endif |
957 | |
958 | #ifdef OSD_SOURCE_SEL |
959 | /* the source selection area is handles internally */ |
960 | but = osd_source_check(osd, down, x, y); |
961 | #endif |
962 | |
963 | if(but == OSD_NONE) { |
964 | gint mx = x - OSD_X; |
965 | gint my = y - OSD_Y; |
966 | |
967 | if(OSD_X < 0) |
968 | mx -= (osd->widget->allocation.width - OSD_W); |
969 | |
970 | if(OSD_Y < 0) |
971 | my -= (osd->widget->allocation.height - OSD_H); |
972 | |
973 | /* first do a rough test for the OSD area. */ |
974 | /* this is just to avoid an unnecessary detailed test */ |
975 | if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) { |
976 | #ifndef OSD_NO_DPAD |
977 | but = osd_check_dpad(mx, my); |
978 | #endif |
979 | } |
980 | |
981 | if(but == OSD_NONE) |
982 | but = osd_check_zoom(mx, my); |
983 | } |
984 | |
985 | #ifdef OSD_BALLOON |
986 | if(but == OSD_NONE) { |
987 | /* check if user clicked into balloon */ |
988 | if(osd_balloon_check(osd, down, x, y)) |
989 | but = OSD_BG; |
990 | } |
991 | #endif |
992 | |
993 | return but; |
994 | } |
995 | |
996 | #ifndef OSD_NO_DPAD |
997 | static void |
998 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
999 | /* move reference to dpad center */ |
1000 | x += D_RAD; |
1001 | y += D_RAD; |
1002 | |
1003 | const static gint offset[][3][2] = { |
1004 | /* left arrow/triangle */ |
1005 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
1006 | /* right arrow/triangle */ |
1007 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
1008 | /* top arrow/triangle */ |
1009 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
1010 | /* bottom arrow/triangle */ |
1011 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
1012 | }; |
1013 | |
1014 | int i; |
1015 | for(i=0;i<4;i++) { |
1016 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
1017 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
1018 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
1019 | } |
1020 | } |
1021 | #endif |
1022 | |
1023 | #ifdef OSD_GPS_BUTTON |
1024 | /* draw the satellite dish icon in the center of the dpad */ |
1025 | #define GPS_V0 (D_RAD/7) |
1026 | #define GPS_V1 (D_RAD/10) |
1027 | #define GPS_V2 (D_RAD/5) |
1028 | |
1029 | /* draw a satellite receiver dish */ |
1030 | /* this is either drawn in the center of the dpad (if present) */ |
1031 | /* or in the middle of the zoom area */ |
1032 | static void |
1033 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
1034 | /* move reference to dpad center */ |
1035 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
1036 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
1037 | |
1038 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
1039 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
1040 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
1041 | cairo_close_path (cr); |
1042 | |
1043 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
1044 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
1045 | cairo_close_path (cr); |
1046 | |
1047 | x += GPS_V1; |
1048 | cairo_move_to (cr, x, y-GPS_V2); |
1049 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
1050 | } |
1051 | #endif |
1052 | |
1053 | #define Z_LEN (2*Z_RAD/3) |
1054 | |
1055 | static void |
1056 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
1057 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
1058 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
1059 | |
1060 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
1061 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
1062 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
1063 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
1064 | } |
1065 | |
1066 | #ifdef OSD_COORDINATES |
1067 | |
1068 | #ifndef OSD_COORDINATES_FONT_SIZE |
1069 | #define OSD_COORDINATES_FONT_SIZE 12 |
1070 | #endif |
1071 | |
1072 | #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6) |
1073 | |
1074 | #define OSD_COORDINATES_W (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET) |
1075 | #define OSD_COORDINATES_H (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4) |
1076 | |
1077 | /* these can be overwritten with versions that support */ |
1078 | /* localization */ |
1079 | #ifndef OSD_COORDINATES_CHR_N |
1080 | #define OSD_COORDINATES_CHR_N "N" |
1081 | #endif |
1082 | #ifndef OSD_COORDINATES_CHR_S |
1083 | #define OSD_COORDINATES_CHR_S "S" |
1084 | #endif |
1085 | #ifndef OSD_COORDINATES_CHR_E |
1086 | #define OSD_COORDINATES_CHR_E "E" |
1087 | #endif |
1088 | #ifndef OSD_COORDINATES_CHR_W |
1089 | #define OSD_COORDINATES_CHR_W "W" |
1090 | #endif |
1091 | |
1092 | |
1093 | |
1094 | /* this is the classic geocaching notation */ |
1095 | static char |
1096 | *osd_latitude_str(float latitude) { |
1097 | char *c = OSD_COORDINATES_CHR_N; |
1098 | float integral, fractional; |
1099 | |
1100 | if(isnan(latitude)) |
1101 | return NULL; |
1102 | |
1103 | if(latitude < 0) { |
1104 | latitude = fabs(latitude); |
1105 | c = OSD_COORDINATES_CHR_S; |
1106 | } |
1107 | |
1108 | fractional = modff(latitude, &integral); |
1109 | |
1110 | return g_strdup_printf("%s %02d° %06.3f'", |
1111 | c, (int)integral, fractional*60.0); |
1112 | } |
1113 | |
1114 | static char |
1115 | *osd_longitude_str(float longitude) { |
1116 | char *c = OSD_COORDINATES_CHR_E; |
1117 | float integral, fractional; |
1118 | |
1119 | if(isnan(longitude)) |
1120 | return NULL; |
1121 | |
1122 | if(longitude < 0) { |
1123 | longitude = fabs(longitude); |
1124 | c = OSD_COORDINATES_CHR_W; |
1125 | } |
1126 | |
1127 | fractional = modff(longitude, &integral); |
1128 | |
1129 | return g_strdup_printf("%s %03d° %06.3f'", |
1130 | c, (int)integral, fractional*60.0); |
1131 | } |
1132 | |
1133 | /* render a string at the given screen position */ |
1134 | static int |
1135 | osd_render_centered_text(cairo_t *cr, int y, int width, char *text) { |
1136 | char *p = g_strdup(text); |
1137 | cairo_text_extents_t extents; |
1138 | cairo_text_extents (cr, p, &extents); |
1139 | |
1140 | /* check if text needs to be truncated */ |
1141 | int len = strlen(text)-2; |
1142 | while(extents.width > width) { |
1143 | len--; |
1144 | strcpy(p+len, "..."); |
1145 | cairo_text_extents (cr, p, &extents); |
1146 | } |
1147 | |
1148 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
1149 | cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6); |
1150 | cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing); |
1151 | cairo_text_path (cr, p); |
1152 | cairo_stroke (cr); |
1153 | |
1154 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
1155 | cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing); |
1156 | cairo_show_text (cr, p); |
1157 | |
1158 | g_free(p); |
1159 | |
1160 | /* skip + 1/4 line */ |
1161 | return y + 5*OSD_COORDINATES_FONT_SIZE/4; |
1162 | } |
1163 | |
1164 | static void |
1165 | osd_render_coordinates(osm_gps_map_osd_t *osd) |
1166 | { |
1167 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1168 | |
1169 | /* get current map position */ |
1170 | gfloat lat, lon; |
1171 | g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL); |
1172 | |
1173 | /* check if position has changed enough to require redraw */ |
1174 | if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon)) |
1175 | /* 1/60000 == 1/1000 minute */ |
1176 | if((fabsf(lat - priv->coordinates.lat) < 1/60000) && |
1177 | (fabsf(lon - priv->coordinates.lon) < 1/60000)) |
1178 | return; |
1179 | |
1180 | priv->coordinates.lat = lat; |
1181 | priv->coordinates.lon = lon; |
1182 | |
1183 | /* first fill with transparency */ |
1184 | cairo_t *cr = cairo_create(priv->coordinates.surface); |
1185 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1186 | // cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5); |
1187 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
1188 | cairo_paint(cr); |
1189 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1190 | |
1191 | cairo_select_font_face (cr, "Sans", |
1192 | CAIRO_FONT_SLANT_NORMAL, |
1193 | CAIRO_FONT_WEIGHT_BOLD); |
1194 | cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE); |
1195 | |
1196 | char *latitude = osd_latitude_str(lat); |
1197 | char *longitude = osd_longitude_str(lon); |
1198 | |
1199 | int y = OSD_COORDINATES_OFFSET; |
1200 | y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude); |
1201 | y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude); |
1202 | |
1203 | g_free(latitude); |
1204 | g_free(longitude); |
1205 | |
1206 | cairo_destroy(cr); |
1207 | } |
1208 | #endif // OSD_COORDINATES |
1209 | |
1210 | #ifdef OSD_NAV |
1211 | #define OSD_NAV_W (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET) |
1212 | #define OSD_NAV_H (150) |
1213 | |
1214 | static void |
1215 | osd_render_nav(osm_gps_map_osd_t *osd) |
1216 | { |
1217 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1218 | |
1219 | if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon)) |
1220 | return; |
1221 | |
1222 | /* first fill with transparency */ |
1223 | cairo_t *cr = cairo_create(priv->nav.surface); |
1224 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1225 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
1226 | cairo_paint(cr); |
1227 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1228 | |
1229 | cairo_select_font_face (cr, "Sans", |
1230 | CAIRO_FONT_SLANT_NORMAL, |
1231 | CAIRO_FONT_WEIGHT_BOLD); |
1232 | cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE); |
1233 | |
1234 | char *latitude = osd_latitude_str(priv->nav.lat); |
1235 | char *longitude = osd_longitude_str(priv->nav.lon); |
1236 | |
1237 | int y = OSD_COORDINATES_OFFSET; |
1238 | y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name); |
1239 | y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude); |
1240 | y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude); |
1241 | |
1242 | g_free(latitude); |
1243 | g_free(longitude); |
1244 | |
1245 | /* draw the compass */ |
1246 | int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2; |
1247 | if(radius > OSD_NAV_W/2) |
1248 | radius = OSD_NAV_W/2; |
1249 | |
1250 | int x = OSD_NAV_W/2+1; |
1251 | y += radius; |
1252 | |
1253 | cairo_stroke (cr); |
1254 | |
1255 | /* draw background */ |
1256 | cairo_arc(cr, x, y, radius, 0, 2*M_PI); |
1257 | cairo_set_source_rgba (cr, 1, 1, 1, 0.5); |
1258 | cairo_fill_preserve (cr); |
1259 | cairo_set_source_rgb (cr, 0, 0, 0); |
1260 | cairo_set_line_width (cr, 1); |
1261 | cairo_stroke (cr); |
1262 | |
1263 | /* draw pointer */ |
1264 | #define ARROW_WIDTH 0.3 |
1265 | #define ARROW_LENGTH 0.7 |
1266 | |
1267 | float arot = deg2rad(45); |
1268 | |
1269 | cairo_move_to(cr, |
1270 | x + radius * ARROW_LENGTH * sin(arot), |
1271 | y + radius * ARROW_LENGTH * -cos(arot)); |
1272 | |
1273 | cairo_line_to(cr, |
1274 | x + radius * -ARROW_LENGTH * sin(arot+ARROW_WIDTH), |
1275 | y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH)); |
1276 | |
1277 | cairo_line_to(cr, |
1278 | x + radius * -0.5 * ARROW_LENGTH * sin(arot), |
1279 | y + radius * -0.5 * ARROW_LENGTH * -cos(arot)); |
1280 | |
1281 | cairo_line_to(cr, |
1282 | x + radius * -ARROW_LENGTH * sin(arot-ARROW_WIDTH), |
1283 | y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH)); |
1284 | |
1285 | cairo_close_path(cr); |
1286 | cairo_set_source_rgb (cr, 0, 0, 0); |
1287 | cairo_fill (cr); |
1288 | |
1289 | y += radius + OSD_COORDINATES_FONT_SIZE/4; |
1290 | y = osd_render_centered_text(cr, y, OSD_NAV_W, "xx,xx km"); |
1291 | |
1292 | cairo_destroy(cr); |
1293 | } |
1294 | |
1295 | void osm_gps_map_osd_clear_nav (OsmGpsMap *map) { |
1296 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
1297 | |
1298 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1299 | g_return_if_fail (osd); |
1300 | |
1301 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1302 | g_return_if_fail (priv); |
1303 | |
1304 | if(priv->nav.surface) { |
1305 | cairo_surface_destroy(priv->nav.surface); |
1306 | priv->nav.surface = NULL; |
1307 | priv->nav.lat = OSM_GPS_MAP_INVALID; |
1308 | priv->nav.lon = OSM_GPS_MAP_INVALID; |
1309 | if(priv->nav.name) g_free(priv->nav.name); |
1310 | } |
1311 | osm_gps_map_redraw(map); |
1312 | } |
1313 | |
1314 | void |
1315 | osm_gps_map_osd_draw_nav (OsmGpsMap *map, float latitude, float longitude, |
1316 | char *name) { |
1317 | g_return_if_fail (OSM_IS_GPS_MAP (map)); |
1318 | |
1319 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1320 | g_return_if_fail (osd); |
1321 | |
1322 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1323 | g_return_if_fail (priv); |
1324 | |
1325 | osm_gps_map_osd_clear_nav (map); |
1326 | |
1327 | /* allocate balloon surface */ |
1328 | priv->nav.surface = |
1329 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1330 | OSD_NAV_W+2, OSD_NAV_H+2); |
1331 | |
1332 | priv->nav.lat = latitude; |
1333 | priv->nav.lon = longitude; |
1334 | priv->nav.name = g_strdup(name); |
1335 | |
1336 | osd_render_nav(osd); |
1337 | |
1338 | osm_gps_map_redraw(map); |
1339 | } |
1340 | |
1341 | #endif // OSD_NAV |
1342 | |
1343 | |
1344 | #ifdef OSD_CROSSHAIR |
1345 | |
1346 | #ifndef OSD_CROSSHAIR_RADIUS |
1347 | #define OSD_CROSSHAIR_RADIUS 10 |
1348 | #endif |
1349 | |
1350 | #define OSD_CROSSHAIR_TICK (OSD_CROSSHAIR_RADIUS/2) |
1351 | #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4) |
1352 | #define OSD_CROSSHAIR_W ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2) |
1353 | #define OSD_CROSSHAIR_H ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2) |
1354 | |
1355 | static void |
1356 | osd_render_crosshair_shape(cairo_t *cr) { |
1357 | cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2, |
1358 | OSD_CROSSHAIR_RADIUS, 0, 2*M_PI); |
1359 | |
1360 | cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS, |
1361 | OSD_CROSSHAIR_H/2); |
1362 | cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0); |
1363 | cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS, |
1364 | OSD_CROSSHAIR_H/2); |
1365 | cairo_rel_line_to (cr, OSD_CROSSHAIR_TICK, 0); |
1366 | |
1367 | cairo_move_to (cr, OSD_CROSSHAIR_W/2, |
1368 | OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS); |
1369 | cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK); |
1370 | cairo_move_to (cr, OSD_CROSSHAIR_W/2, |
1371 | OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS); |
1372 | cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK); |
1373 | |
1374 | cairo_stroke (cr); |
1375 | } |
1376 | |
1377 | static void |
1378 | osd_render_crosshair(osm_gps_map_osd_t *osd) |
1379 | { |
1380 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1381 | |
1382 | if(priv->crosshair.rendered) |
1383 | return; |
1384 | |
1385 | priv->crosshair.rendered = TRUE; |
1386 | |
1387 | /* first fill with transparency */ |
1388 | cairo_t *cr = cairo_create(priv->crosshair.surface); |
1389 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1390 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0); |
1391 | cairo_paint(cr); |
1392 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1393 | |
1394 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
1395 | |
1396 | cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5); |
1397 | cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2); |
1398 | osd_render_crosshair_shape(cr); |
1399 | |
1400 | cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5); |
1401 | cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4); |
1402 | osd_render_crosshair_shape(cr); |
1403 | |
1404 | cairo_destroy(cr); |
1405 | } |
1406 | #endif |
1407 | |
1408 | #ifdef OSD_SCALE |
1409 | |
1410 | #ifndef OSD_SCALE_FONT_SIZE |
1411 | #define OSD_SCALE_FONT_SIZE 12 |
1412 | #endif |
1413 | #define OSD_SCALE_W (10*OSD_SCALE_FONT_SIZE) |
1414 | #define OSD_SCALE_H (5*OSD_SCALE_FONT_SIZE/2) |
1415 | |
1416 | /* various parameters used to create the scale */ |
1417 | #define OSD_SCALE_H2 (OSD_SCALE_H/2) |
1418 | #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3) |
1419 | #define OSD_SCALE_M (OSD_SCALE_H2 - OSD_SCALE_TICK) |
1420 | #define OSD_SCALE_I (OSD_SCALE_H2 + OSD_SCALE_TICK) |
1421 | #define OSD_SCALE_FD (OSD_SCALE_FONT_SIZE/4) |
1422 | |
1423 | static void |
1424 | osd_render_scale(osm_gps_map_osd_t *osd) |
1425 | { |
1426 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1427 | |
1428 | /* this only needs to be rendered if the zoom has changed */ |
1429 | gint zoom; |
1430 | g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL); |
1431 | if(zoom == priv->scale.zoom) |
1432 | return; |
1433 | |
1434 | priv->scale.zoom = zoom; |
1435 | |
1436 | float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget)); |
1437 | |
1438 | /* first fill with transparency */ |
1439 | cairo_t *cr = cairo_create(priv->scale.surface); |
1440 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1441 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
1442 | // pink for testing: cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
1443 | cairo_paint(cr); |
1444 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1445 | |
1446 | /* determine the size of the scale width in meters */ |
1447 | float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix; |
1448 | |
1449 | /* scale this to useful values */ |
1450 | int exp = logf(width)*M_LOG10E; |
1451 | int mant = width/pow(10,exp); |
1452 | int width_metric = mant * pow(10,exp); |
1453 | char *dist_str = NULL; |
1454 | if(width_metric<1000) |
1455 | dist_str = g_strdup_printf("%u m", width_metric); |
1456 | else |
1457 | dist_str = g_strdup_printf("%u km", width_metric/1000); |
1458 | width_metric /= m_per_pix; |
1459 | |
1460 | /* and now the hard part: scale for useful imperial values :-( */ |
1461 | /* try to convert to feet, 1ft == 0.3048 m */ |
1462 | width /= 0.3048; |
1463 | float imp_scale = 0.3048; |
1464 | char *dist_imp_unit = "ft"; |
1465 | |
1466 | if(width >= 100) { |
1467 | /* 1yd == 3 feet */ |
1468 | width /= 3.0; |
1469 | imp_scale *= 3.0; |
1470 | dist_imp_unit = "yd"; |
1471 | |
1472 | if(width >= 1760.0) { |
1473 | /* 1mi == 1760 yd */ |
1474 | width /= 1760.0; |
1475 | imp_scale *= 1760.0; |
1476 | dist_imp_unit = "mi"; |
1477 | } |
1478 | } |
1479 | |
1480 | /* also convert this to full tens/hundreds */ |
1481 | exp = logf(width)*M_LOG10E; |
1482 | mant = width/pow(10,exp); |
1483 | int width_imp = mant * pow(10,exp); |
1484 | char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit); |
1485 | |
1486 | /* convert back to pixels */ |
1487 | width_imp *= imp_scale; |
1488 | width_imp /= m_per_pix; |
1489 | |
1490 | cairo_select_font_face (cr, "Sans", |
1491 | CAIRO_FONT_SLANT_NORMAL, |
1492 | CAIRO_FONT_WEIGHT_BOLD); |
1493 | cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE); |
1494 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
1495 | |
1496 | cairo_text_extents_t extents; |
1497 | cairo_text_extents (cr, dist_str, &extents); |
1498 | |
1499 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
1500 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
1501 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
1502 | cairo_text_path (cr, dist_str); |
1503 | cairo_stroke (cr); |
1504 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
1505 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
1506 | cairo_text_path (cr, dist_str_imp); |
1507 | cairo_stroke (cr); |
1508 | |
1509 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
1510 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
1511 | cairo_show_text (cr, dist_str); |
1512 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
1513 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
1514 | cairo_show_text (cr, dist_str_imp); |
1515 | |
1516 | g_free(dist_str); |
1517 | g_free(dist_str_imp); |
1518 | |
1519 | /* draw white line */ |
1520 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
1521 | cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); |
1522 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3); |
1523 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
1524 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
1525 | cairo_rel_line_to (cr, width_metric, 0); |
1526 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1527 | cairo_stroke(cr); |
1528 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
1529 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1530 | cairo_rel_line_to (cr, width_imp, 0); |
1531 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
1532 | cairo_stroke(cr); |
1533 | |
1534 | /* draw black line */ |
1535 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
1536 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
1537 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
1538 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
1539 | cairo_rel_line_to (cr, width_metric, 0); |
1540 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1541 | cairo_stroke(cr); |
1542 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
1543 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
1544 | cairo_rel_line_to (cr, width_imp, 0); |
1545 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
1546 | cairo_stroke(cr); |
1547 | |
1548 | cairo_destroy(cr); |
1549 | } |
1550 | #endif |
1551 | |
1552 | static void |
1553 | osd_render_controls(osm_gps_map_osd_t *osd) |
1554 | { |
1555 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1556 | |
1557 | if(priv->controls.rendered |
1558 | #ifdef OSD_GPS_BUTTON |
1559 | && (priv->controls.gps_enabled == (osd->cb != NULL)) |
1560 | #endif |
1561 | ) |
1562 | return; |
1563 | |
1564 | #ifdef OSD_GPS_BUTTON |
1565 | priv->controls.gps_enabled = (osd->cb != NULL); |
1566 | #endif |
1567 | priv->controls.rendered = TRUE; |
1568 | |
1569 | #ifndef OSD_COLOR |
1570 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
1571 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
1572 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
1573 | #endif |
1574 | |
1575 | /* first fill with transparency */ |
1576 | cairo_t *cr = cairo_create(priv->controls.surface); |
1577 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
1578 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
1579 | cairo_paint(cr); |
1580 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
1581 | |
1582 | /* --------- draw zoom and dpad shape shadow ----------- */ |
1583 | #ifdef OSD_SHADOW_ENABLE |
1584 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
1585 | osd_shape_shadow(cr); |
1586 | #ifndef OSD_NO_DPAD |
1587 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
1588 | osd_shape_shadow(cr); |
1589 | #endif |
1590 | #endif |
1591 | |
1592 | /* --------- draw zoom and dpad shape ----------- */ |
1593 | |
1594 | osd_zoom_shape(cr, 1, 1); |
1595 | #ifndef OSD_COLOR |
1596 | osd_shape(cr, &bg, &fg); |
1597 | #else |
1598 | osd_shape(cr); |
1599 | #endif |
1600 | #ifndef OSD_NO_DPAD |
1601 | osd_dpad_shape(cr, 1, 1); |
1602 | #ifndef OSD_COLOR |
1603 | osd_shape(cr, &bg, &fg); |
1604 | #else |
1605 | osd_shape(cr); |
1606 | #endif |
1607 | #endif |
1608 | |
1609 | /* --------- draw zoom and dpad labels --------- */ |
1610 | |
1611 | #ifdef OSD_SHADOW_ENABLE |
1612 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
1613 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1614 | #ifndef OSD_NO_DPAD |
1615 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1616 | #endif |
1617 | cairo_stroke(cr); |
1618 | #ifdef OSD_GPS_BUTTON |
1619 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
1620 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
1621 | cairo_stroke(cr); |
1622 | #endif |
1623 | #endif |
1624 | |
1625 | #ifndef OSD_COLOR |
1626 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
1627 | #else |
1628 | osd_labels(cr, Z_RAD/3, TRUE); |
1629 | #endif |
1630 | osd_zoom_labels(cr, 1, 1); |
1631 | #ifndef OSD_NO_DPAD |
1632 | osd_dpad_labels(cr, 1, 1); |
1633 | #endif |
1634 | cairo_stroke(cr); |
1635 | |
1636 | #ifndef OSD_COLOR |
1637 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
1638 | #else |
1639 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
1640 | #endif |
1641 | #ifdef OSD_GPS_BUTTON |
1642 | osd_dpad_gps(cr, 1, 1); |
1643 | #endif |
1644 | cairo_stroke(cr); |
1645 | |
1646 | cairo_destroy(cr); |
1647 | } |
1648 | |
1649 | static void |
1650 | osd_render(osm_gps_map_osd_t *osd) |
1651 | { |
1652 | /* this function is actually called pretty often since the */ |
1653 | /* OSD contents may have changed (due to a coordinate/zoom change). */ |
1654 | /* The different OSD parts have to make sure that they don't */ |
1655 | /* render unneccessarily often and thus waste CPU power */ |
1656 | |
1657 | osd_render_controls(osd); |
1658 | |
1659 | #ifdef OSD_SOURCE_SEL |
1660 | osd_render_source_sel(osd, FALSE); |
1661 | #endif |
1662 | |
1663 | #ifdef OSD_SCALE |
1664 | osd_render_scale(osd); |
1665 | #endif |
1666 | |
1667 | #ifdef OSD_CROSSHAIR |
1668 | osd_render_crosshair(osd); |
1669 | #endif |
1670 | |
1671 | #ifdef OSD_NAV |
1672 | osd_render_nav(osd); |
1673 | #endif |
1674 | |
1675 | #ifdef OSD_COORDINATES |
1676 | osd_render_coordinates(osd); |
1677 | #endif |
1678 | } |
1679 | |
1680 | static void |
1681 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
1682 | { |
1683 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1684 | |
1685 | /* OSD itself uses some off-screen rendering, so check if the */ |
1686 | /* offscreen buffer is present and create it if not */ |
1687 | if(!priv->controls.surface) { |
1688 | /* create overlay ... */ |
1689 | priv->controls.surface = |
1690 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
1691 | |
1692 | priv->controls.rendered = FALSE; |
1693 | #ifdef OSD_GPS_BUTTON |
1694 | priv->controls.gps_enabled = FALSE; |
1695 | #endif |
1696 | |
1697 | #ifdef OSD_SOURCE_SEL |
1698 | /* the initial OSD state is alway not-expanded */ |
1699 | priv->source_sel.surface = |
1700 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1701 | OSD_S_W+2, OSD_S_H+2); |
1702 | priv->source_sel.rendered = FALSE; |
1703 | #endif |
1704 | |
1705 | #ifdef OSD_SCALE |
1706 | priv->scale.surface = |
1707 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1708 | OSD_SCALE_W, OSD_SCALE_H); |
1709 | priv->scale.zoom = -1; |
1710 | #endif |
1711 | |
1712 | #ifdef OSD_CROSSHAIR |
1713 | priv->crosshair.surface = |
1714 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1715 | OSD_CROSSHAIR_W, OSD_CROSSHAIR_H); |
1716 | priv->crosshair.rendered = FALSE; |
1717 | #endif |
1718 | |
1719 | #ifdef OSD_COORDINATES |
1720 | priv->coordinates.surface = |
1721 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1722 | OSD_COORDINATES_W, OSD_COORDINATES_H); |
1723 | |
1724 | priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID; |
1725 | #endif |
1726 | |
1727 | /* ... and render it */ |
1728 | osd_render(osd); |
1729 | } |
1730 | |
1731 | // now draw this onto the original context |
1732 | cairo_t *cr = gdk_cairo_create(drawable); |
1733 | |
1734 | gint x, y; |
1735 | |
1736 | #ifdef OSD_SCALE |
1737 | x = OSD_X; |
1738 | y = -OSD_Y; |
1739 | if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W; |
1740 | if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H; |
1741 | |
1742 | cairo_set_source_surface(cr, priv->scale.surface, x, y); |
1743 | cairo_paint(cr); |
1744 | #endif |
1745 | |
1746 | #ifdef OSD_CROSSHAIR |
1747 | x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2; |
1748 | y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2; |
1749 | |
1750 | cairo_set_source_surface(cr, priv->crosshair.surface, x, y); |
1751 | cairo_paint(cr); |
1752 | #endif |
1753 | |
1754 | #ifdef OSD_NAV |
1755 | if(priv->nav.surface) { |
1756 | x = OSD_X; |
1757 | if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W; |
1758 | y = (osd->widget->allocation.height - OSD_NAV_H)/2; |
1759 | |
1760 | cairo_set_source_surface(cr, priv->nav.surface, x, y); |
1761 | cairo_paint(cr); |
1762 | } |
1763 | #endif |
1764 | |
1765 | #ifdef OSD_COORDINATES |
1766 | x = -OSD_X; |
1767 | y = -OSD_Y; |
1768 | if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W; |
1769 | if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H; |
1770 | |
1771 | cairo_set_source_surface(cr, priv->coordinates.surface, x, y); |
1772 | cairo_paint(cr); |
1773 | #endif |
1774 | |
1775 | #ifdef OSD_BALLOON |
1776 | if(priv->balloon.surface) { |
1777 | |
1778 | /* convert given lat lon into screen coordinates */ |
1779 | gint x, y; |
1780 | osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget), |
1781 | priv->balloon.lat, priv->balloon.lon, |
1782 | &x, &y); |
1783 | |
1784 | /* check if balloon needs to be rerendered */ |
1785 | osd_render_balloon(osd); |
1786 | |
1787 | cairo_set_source_surface(cr, priv->balloon.surface, |
1788 | x + priv->balloon.offset_x, |
1789 | y + priv->balloon.offset_y); |
1790 | cairo_paint(cr); |
1791 | } |
1792 | #endif |
1793 | |
1794 | x = OSD_X; |
1795 | if(x < 0) |
1796 | x += osd->widget->allocation.width - OSD_W; |
1797 | |
1798 | y = OSD_Y; |
1799 | if(y < 0) |
1800 | y += osd->widget->allocation.height - OSD_H; |
1801 | |
1802 | cairo_set_source_surface(cr, priv->controls.surface, x, y); |
1803 | cairo_paint(cr); |
1804 | |
1805 | #ifdef OSD_SOURCE_SEL |
1806 | if(!priv->source_sel.handler_id) { |
1807 | /* the OSD source selection is not being animated */ |
1808 | if(!priv->source_sel.expanded) |
1809 | x = osd->widget->allocation.width - OSD_S_W; |
1810 | else |
1811 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
1812 | } else |
1813 | x = priv->source_sel.shift; |
1814 | |
1815 | y = OSD_S_Y; |
1816 | if(OSD_S_Y < 0) { |
1817 | if(!priv->source_sel.expanded) |
1818 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
1819 | else |
1820 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
1821 | } |
1822 | |
1823 | cairo_set_source_surface(cr, priv->source_sel.surface, x, y); |
1824 | cairo_paint(cr); |
1825 | #endif |
1826 | |
1827 | cairo_destroy(cr); |
1828 | } |
1829 | |
1830 | static void |
1831 | osd_free(osm_gps_map_osd_t *osd) |
1832 | { |
1833 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
1834 | |
1835 | if (priv->controls.surface) |
1836 | cairo_surface_destroy(priv->controls.surface); |
1837 | |
1838 | #ifdef OSD_SOURCE_SEL |
1839 | if(priv->source_sel.handler_id) |
1840 | gtk_timeout_remove(priv->source_sel.handler_id); |
1841 | |
1842 | if (priv->source_sel.surface) |
1843 | cairo_surface_destroy(priv->source_sel.surface); |
1844 | #endif |
1845 | |
1846 | #ifdef OSD_SCALE |
1847 | if (priv->scale.surface) |
1848 | cairo_surface_destroy(priv->scale.surface); |
1849 | #endif |
1850 | |
1851 | #ifdef OSD_CROSSHAIR |
1852 | if (priv->crosshair.surface) |
1853 | cairo_surface_destroy(priv->crosshair.surface); |
1854 | #endif |
1855 | |
1856 | #ifdef OSD_NAV |
1857 | if (priv->nav.surface) |
1858 | cairo_surface_destroy(priv->nav.surface); |
1859 | #endif |
1860 | |
1861 | #ifdef OSD_COORDINATES |
1862 | if (priv->coordinates.surface) |
1863 | cairo_surface_destroy(priv->coordinates.surface); |
1864 | #endif |
1865 | |
1866 | #ifdef OSD_BALLOON |
1867 | if (priv->balloon.surface) |
1868 | cairo_surface_destroy(priv->balloon.surface); |
1869 | #endif |
1870 | |
1871 | g_free(priv); |
1872 | } |
1873 | |
1874 | static gboolean |
1875 | osd_busy(osm_gps_map_osd_t *osd) |
1876 | { |
1877 | #ifdef OSD_SOURCE_SEL |
1878 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
1879 | return (priv->source_sel.handler_id != 0); |
1880 | #else |
1881 | return FALSE; |
1882 | #endif |
1883 | } |
1884 | |
1885 | static osm_gps_map_osd_t osd_classic = { |
1886 | .widget = NULL, |
1887 | |
1888 | .draw = osd_draw, |
1889 | .check = osd_check, |
1890 | .render = osd_render, |
1891 | .free = osd_free, |
1892 | .busy = osd_busy, |
1893 | |
1894 | .cb = NULL, |
1895 | .data = NULL, |
1896 | |
1897 | .priv = NULL |
1898 | }; |
1899 | |
1900 | /* this is the only function that's externally visible */ |
1901 | void |
1902 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
1903 | { |
1904 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
1905 | |
1906 | #ifdef OSD_BALLOON |
1907 | priv->balloon.lat = OSM_GPS_MAP_INVALID; |
1908 | priv->balloon.lon = OSM_GPS_MAP_INVALID; |
1909 | #endif |
1910 | |
1911 | osd_classic.priv = priv; |
1912 | |
1913 | osm_gps_map_register_osd(map, &osd_classic); |
1914 | } |
1915 | |
1916 | #ifdef OSD_GPS_BUTTON |
1917 | /* below are osd specific functions which aren't used by osm-gps-map */ |
1918 | /* but instead are to be used by the main application */ |
1919 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
1920 | gpointer data) { |
1921 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1922 | g_return_if_fail (osd); |
1923 | |
1924 | osd->cb = cb; |
1925 | osd->data = data; |
1926 | |
1927 | /* this may have changed the state of the gps button */ |
1928 | /* we thus re-render the overlay */ |
1929 | osd->render(osd); |
1930 | |
1931 | osm_gps_map_redraw(map); |
1932 | } |
1933 | #endif |
1934 | |
1935 | osd_button_t |
1936 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
1937 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1938 | g_return_val_if_fail (osd, OSD_NONE); |
1939 | |
1940 | return osd_check(osd, TRUE, x, y); |
1941 | } |