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OSD animation
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 <math.h> // M_PI |
23 | |
24 | #define OSD_SOURCE_SEL |
25 | |
26 | #define OSD_Y (-10) |
27 | |
28 | /* parameters that can be overwritten from the config file: */ |
29 | /* OSD_DIAMETER */ |
30 | /* OSD_X, OSD_Y */ |
31 | |
32 | #ifndef USE_CAIRO |
33 | #error "OSD control display lacks a non-cairo implementation!" |
34 | #endif |
35 | |
36 | #include <cairo.h> |
37 | |
38 | #include "osm-gps-map.h" |
39 | #include "osm-gps-map-osd-classic.h" |
40 | |
41 | //the osd controls |
42 | typedef struct { |
43 | /* the offscreen representation of the OSD */ |
44 | cairo_surface_t *overlay; |
45 | |
46 | cairo_surface_t *map_source; |
47 | gboolean expanded; |
48 | gint shift, dir, count; |
49 | gint handler_id; |
50 | } osd_priv_t; |
51 | |
52 | /* position and extent of bounding box */ |
53 | #ifndef OSD_X |
54 | #define OSD_X (10) |
55 | #endif |
56 | |
57 | #ifndef OSD_Y |
58 | #define OSD_Y (10) |
59 | #endif |
60 | |
61 | /* parameters of the direction shape */ |
62 | #ifndef OSD_DIAMETER |
63 | #define D_RAD (30) // diameter of dpad |
64 | #else |
65 | #define D_RAD (OSD_DIAMETER) |
66 | #endif |
67 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
68 | #define D_LEN (D_RAD/4) // length of arrow |
69 | #define D_WID (D_LEN) // width of arrow |
70 | |
71 | /* parameters of the "zoom" pad */ |
72 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
73 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
74 | |
75 | #ifdef OSD_SHADOW_ENABLE |
76 | /* shadow also depends on control size */ |
77 | #define OSD_SHADOW (D_RAD/6) |
78 | #else |
79 | #define OSD_SHADOW (0) |
80 | #endif |
81 | |
82 | /* normally the GPS button is in the center of the dpad. if there's */ |
83 | /* no dpad it will go into the zoom area */ |
84 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
85 | #define Z_GPS 1 |
86 | #else |
87 | #define Z_GPS 0 |
88 | #endif |
89 | |
90 | /* total width and height of controls incl. shadow */ |
91 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
92 | #if !Z_GPS |
93 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
94 | #else |
95 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
96 | #endif |
97 | |
98 | #ifdef OSD_SHADOW_ENABLE |
99 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
100 | #endif |
101 | |
102 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
103 | |
104 | #define Z_MID (Z_TOP + Z_RAD) |
105 | #define Z_BOT (Z_MID + Z_RAD) |
106 | #define Z_LEFT (Z_RAD) |
107 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
108 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
109 | |
110 | /* create the cairo shape used for the zoom buttons */ |
111 | static void |
112 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
113 | { |
114 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
115 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
116 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
117 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
118 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
119 | } |
120 | |
121 | /* ------------------- color/shadow functions ----------------- */ |
122 | |
123 | #ifndef OSD_COLOR |
124 | /* if no color has been specified we just use the gdks default colors */ |
125 | static void |
126 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
127 | GdkColor *fg, GdkColor *disabled) { |
128 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
129 | else gdk_cairo_set_source_color(cr, disabled); |
130 | cairo_set_line_width (cr, width); |
131 | cairo_stroke (cr); |
132 | } |
133 | #else |
134 | static void |
135 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
136 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
137 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
138 | cairo_set_line_width (cr, width); |
139 | cairo_stroke (cr); |
140 | } |
141 | #endif |
142 | |
143 | #ifdef OSD_SHADOW_ENABLE |
144 | static void |
145 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
146 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
147 | cairo_set_line_width (cr, width); |
148 | cairo_stroke (cr); |
149 | } |
150 | #endif |
151 | |
152 | #ifndef OSD_NO_DPAD |
153 | /* create the cairo shape used for the dpad */ |
154 | static void |
155 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
156 | { |
157 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
158 | } |
159 | #endif |
160 | |
161 | #ifdef OSD_SHADOW_ENABLE |
162 | static void |
163 | osd_shape_shadow(cairo_t *cr) { |
164 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
165 | cairo_fill (cr); |
166 | cairo_stroke (cr); |
167 | } |
168 | #endif |
169 | |
170 | #ifndef OSD_COLOR |
171 | /* if no color has been specified we just use the gdks default colors */ |
172 | static void |
173 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
174 | gdk_cairo_set_source_color(cr, bg); |
175 | cairo_fill_preserve (cr); |
176 | gdk_cairo_set_source_color(cr, fg); |
177 | cairo_set_line_width (cr, 1); |
178 | cairo_stroke (cr); |
179 | } |
180 | #else |
181 | static void |
182 | osd_shape(cairo_t *cr) { |
183 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
184 | cairo_fill_preserve (cr); |
185 | cairo_set_source_rgb (cr, OSD_COLOR); |
186 | cairo_set_line_width (cr, 1); |
187 | cairo_stroke (cr); |
188 | } |
189 | #endif |
190 | |
191 | |
192 | static gboolean |
193 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
194 | { |
195 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
196 | } |
197 | |
198 | #ifndef OSD_NO_DPAD |
199 | /* check whether x/y is within the dpad */ |
200 | static osd_button_t |
201 | osd_check_dpad(gint x, gint y) |
202 | { |
203 | /* within entire dpad circle */ |
204 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
205 | { |
206 | /* convert into position relative to dpads centre */ |
207 | x -= D_RAD; |
208 | y -= D_RAD; |
209 | |
210 | #ifdef OSD_GPS_BUTTON |
211 | /* check for dpad center goes here! */ |
212 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
213 | return OSD_GPS; |
214 | #endif |
215 | |
216 | if( y < 0 && abs(x) < abs(y)) |
217 | return OSD_UP; |
218 | |
219 | if( y > 0 && abs(x) < abs(y)) |
220 | return OSD_DOWN; |
221 | |
222 | if( x < 0 && abs(y) < abs(x)) |
223 | return OSD_LEFT; |
224 | |
225 | if( x > 0 && abs(y) < abs(x)) |
226 | return OSD_RIGHT; |
227 | |
228 | return OSD_BG; |
229 | } |
230 | return OSD_NONE; |
231 | } |
232 | #endif |
233 | |
234 | /* check whether x/y is within the zoom pads */ |
235 | static osd_button_t |
236 | osd_check_zoom(gint x, gint y) { |
237 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
238 | |
239 | /* within circle around (-) label */ |
240 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
241 | return OSD_OUT; |
242 | |
243 | /* within circle around (+) label */ |
244 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
245 | return OSD_IN; |
246 | |
247 | #if Z_GPS == 1 |
248 | /* within square around center */ |
249 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
250 | return OSD_GPS; |
251 | #endif |
252 | |
253 | /* between center of (-) button and center of entire zoom control area */ |
254 | if(x > OSD_LEFT && x < D_RAD) |
255 | return OSD_OUT; |
256 | |
257 | /* between center of (+) button and center of entire zoom control area */ |
258 | if(x < OSD_RIGHT && x > D_RAD) |
259 | return OSD_IN; |
260 | } |
261 | |
262 | return OSD_NONE; |
263 | } |
264 | |
265 | /* place source selection at right border */ |
266 | #define OSD_S_RAD (Z_RAD) |
267 | #define OSD_S_X (-OSD_X) |
268 | #define OSD_S_Y (OSD_Y) |
269 | #define OSD_S_PW (2 * Z_RAD) |
270 | #define OSD_S_W (OSD_S_PW) |
271 | #define OSD_S_PH (2 * Z_RAD) |
272 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
273 | |
274 | /* size of usable area when exapnded */ |
275 | #define OSD_S_AREA_W (200) |
276 | #define OSD_S_AREA_H (200) |
277 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
278 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
279 | |
280 | /* internal value to draw the arrow on the "puller" */ |
281 | #define OSD_S_D0 (OSD_S_RAD/2) |
282 | |
283 | static void |
284 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
285 | if(!priv->expanded) { |
286 | /* just draw the puller */ |
287 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
288 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
289 | cairo_line_to (cr, x + OSD_S_PW, y); |
290 | } else { |
291 | /* draw the puller and the area itself */ |
292 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
293 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
294 | if(OSD_S_Y > 0) { |
295 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
296 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
297 | } else { |
298 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
299 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
300 | cairo_line_to (cr, x + OSD_S_PW, y); |
301 | } |
302 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
303 | cairo_close_path (cr); |
304 | } |
305 | } |
306 | |
307 | static void |
308 | osd_source_content(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
309 | y += OSD_S_RAD - OSD_S_D0; |
310 | |
311 | if(!priv->expanded) { |
312 | /* draw the "puller" open (<) arrow */ |
313 | cairo_move_to (cr, x + OSD_S_RAD + OSD_S_D0/2, y); |
314 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
315 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
316 | } else { |
317 | if(OSD_S_Y < 0) |
318 | y += OSD_S_AREA_H - OSD_S_PH; |
319 | |
320 | /* draw the "puller" close (>) arrow */ |
321 | cairo_move_to (cr, x + OSD_S_RAD - OSD_S_D0/2, y); |
322 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
323 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
324 | } |
325 | } |
326 | |
327 | static void |
328 | osd_render_source_sel(osm_gps_map_osd_t *osd) { |
329 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
330 | |
331 | #ifndef OSD_COLOR |
332 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
333 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
334 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
335 | #endif |
336 | |
337 | /* draw source selector */ |
338 | cairo_t *cr = cairo_create(priv->map_source); |
339 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
340 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
341 | cairo_paint(cr); |
342 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
343 | |
344 | #ifdef OSD_SHADOW_ENABLE |
345 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
346 | osd_shape_shadow(cr); |
347 | #endif |
348 | |
349 | osd_source_shape(priv, cr, 1, 1); |
350 | #ifndef OSD_COLOR |
351 | osd_shape(cr, &bg, &fg); |
352 | #else |
353 | osd_shape(cr); |
354 | #endif |
355 | |
356 | #ifdef OSD_SHADOW_ENABLE |
357 | osd_source_content(priv, cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
358 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
359 | #endif |
360 | osd_source_content(priv, cr, 1, 1); |
361 | #ifndef OSD_COLOR |
362 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
363 | #else |
364 | osd_labels(cr, Z_RAD/3, TRUE); |
365 | #endif |
366 | |
367 | cairo_destroy(cr); |
368 | } |
369 | |
370 | static void |
371 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
372 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
373 | |
374 | /* re-allocate offscreen bitmap */ |
375 | g_assert (priv->map_source); |
376 | cairo_surface_destroy(priv->map_source); |
377 | |
378 | int w = OSD_S_W, h = OSD_S_H; |
379 | if(priv->expanded) { |
380 | w = OSD_S_EXP_W; |
381 | h = OSD_S_EXP_H; |
382 | } |
383 | |
384 | priv->map_source = |
385 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
386 | |
387 | osd_render_source_sel(osd); |
388 | |
389 | } |
390 | |
391 | #define OSD_HZ 15 |
392 | #define OSD_TIME 1000 |
393 | |
394 | static gboolean osd_source_animate(gpointer data) { |
395 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
396 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
397 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
398 | gboolean done = FALSE; |
399 | priv->count += priv->dir; |
400 | |
401 | /* shifting in */ |
402 | if(priv->dir < 0) { |
403 | if(priv->count <= 0) { |
404 | priv->count = 0; |
405 | done = TRUE; |
406 | } |
407 | } else { |
408 | if(priv->count >= 1000) { |
409 | priv->expanded = FALSE; |
410 | osd_source_reallocate(osd); |
411 | |
412 | priv->count = 1000; |
413 | done = TRUE; |
414 | } |
415 | } |
416 | |
417 | |
418 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
419 | |
420 | /* simple linear mapping */ |
421 | // priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
422 | // (diff * priv->count)/1000; |
423 | |
424 | /* nicer sinoid mapping */ |
425 | float m = 0.5-cos(priv->count * M_PI / 1000.0)/2; |
426 | priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
427 | m * diff; |
428 | |
429 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
430 | |
431 | if(done) |
432 | priv->handler_id = 0; |
433 | |
434 | return !done; |
435 | } |
436 | |
437 | /* switch between expand and collapse mode of source selection */ |
438 | static void |
439 | osd_source_toggle(osm_gps_map_osd_t *osd) |
440 | { |
441 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
442 | |
443 | /* ignore clicks while animation is running */ |
444 | if(priv->handler_id) |
445 | return; |
446 | |
447 | /* expand immediately, collapse is handle at the end of the collapse animation */ |
448 | if(!priv->expanded) { |
449 | priv->expanded = TRUE; |
450 | osd_source_reallocate(osd); |
451 | |
452 | priv->count = 1000; |
453 | priv->shift = osd->widget->allocation.width - OSD_S_W; |
454 | priv->dir = -1000/OSD_HZ; |
455 | } else { |
456 | priv->count = 0; |
457 | priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
458 | priv->dir = +1000/OSD_HZ; |
459 | } |
460 | |
461 | priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd); |
462 | } |
463 | |
464 | static osd_button_t |
465 | osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
466 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
467 | |
468 | if(!priv->expanded) |
469 | x -= osd->widget->allocation.width - OSD_S_W; |
470 | else |
471 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
472 | |
473 | if(OSD_S_Y > 0) |
474 | y -= OSD_S_Y; |
475 | else |
476 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
477 | |
478 | /* within square around puller? */ |
479 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
480 | /* really within puller shape? */ |
481 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
482 | /* expand source selector */ |
483 | osd_source_toggle(osd); |
484 | |
485 | /* tell upper layers that user clicked some background element */ |
486 | /* of the OSD */ |
487 | return OSD_BG; |
488 | } |
489 | } |
490 | return OSD_NONE; |
491 | } |
492 | |
493 | static osd_button_t |
494 | osd_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
495 | osd_button_t but = OSD_NONE; |
496 | |
497 | #ifdef OSD_SOURCE_SEL |
498 | /* the source selection area is handles internally */ |
499 | but = osd_source_check(osd, x, y); |
500 | if(but != OSD_NONE) |
501 | return but; |
502 | #endif |
503 | |
504 | x -= OSD_X; |
505 | y -= OSD_Y; |
506 | |
507 | if(OSD_X < 0) |
508 | x -= (osd->widget->allocation.width - OSD_W); |
509 | |
510 | if(OSD_Y < 0) |
511 | y -= (osd->widget->allocation.height - OSD_H); |
512 | |
513 | /* first do a rough test for the OSD area. */ |
514 | /* this is just to avoid an unnecessary detailed test */ |
515 | if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) { |
516 | #ifndef OSD_NO_DPAD |
517 | but = osd_check_dpad(x, y); |
518 | #endif |
519 | |
520 | if(but == OSD_NONE) |
521 | but = osd_check_zoom(x, y); |
522 | } |
523 | |
524 | return but; |
525 | } |
526 | |
527 | #ifndef OSD_NO_DPAD |
528 | static void |
529 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
530 | /* move reference to dpad center */ |
531 | x += D_RAD; |
532 | y += D_RAD; |
533 | |
534 | const static gint offset[][3][2] = { |
535 | /* left arrow/triangle */ |
536 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
537 | /* right arrow/triangle */ |
538 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
539 | /* top arrow/triangle */ |
540 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
541 | /* bottom arrow/triangle */ |
542 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
543 | }; |
544 | |
545 | int i; |
546 | for(i=0;i<4;i++) { |
547 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
548 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
549 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
550 | } |
551 | } |
552 | #endif |
553 | |
554 | #ifdef OSD_GPS_BUTTON |
555 | /* draw the satellite dish icon in the center of the dpad */ |
556 | #define GPS_V0 (D_RAD/7) |
557 | #define GPS_V1 (D_RAD/10) |
558 | #define GPS_V2 (D_RAD/5) |
559 | |
560 | /* draw a satellite receiver dish */ |
561 | /* this is either drawn in the center of the dpad (if present) */ |
562 | /* or in the middle of the zoom area */ |
563 | static void |
564 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
565 | /* move reference to dpad center */ |
566 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
567 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
568 | |
569 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
570 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
571 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
572 | cairo_close_path (cr); |
573 | |
574 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
575 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
576 | cairo_close_path (cr); |
577 | |
578 | x += GPS_V1; |
579 | cairo_move_to (cr, x, y-GPS_V2); |
580 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
581 | } |
582 | #endif |
583 | |
584 | #define Z_LEN (2*Z_RAD/3) |
585 | |
586 | static void |
587 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
588 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
589 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
590 | |
591 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
592 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
593 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
594 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
595 | } |
596 | |
597 | static void |
598 | osd_render(osm_gps_map_osd_t *osd) { |
599 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
600 | |
601 | #ifndef OSD_COLOR |
602 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
603 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
604 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
605 | #endif |
606 | |
607 | /* first fill with transparency */ |
608 | cairo_t *cr = cairo_create(priv->overlay); |
609 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
610 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
611 | cairo_paint(cr); |
612 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
613 | |
614 | /* --------- draw zoom and dpad shape shadow ----------- */ |
615 | #ifdef OSD_SHADOW_ENABLE |
616 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
617 | osd_shape_shadow(cr); |
618 | #ifndef OSD_NO_DPAD |
619 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
620 | osd_shape_shadow(cr); |
621 | #endif |
622 | #endif |
623 | |
624 | /* --------- draw zoom and dpad shape ----------- */ |
625 | |
626 | osd_zoom_shape(cr, 1, 1); |
627 | #ifndef OSD_COLOR |
628 | osd_shape(cr, &bg, &fg); |
629 | #else |
630 | osd_shape(cr); |
631 | #endif |
632 | #ifndef OSD_NO_DPAD |
633 | osd_dpad_shape(cr, 1, 1); |
634 | #ifndef OSD_COLOR |
635 | osd_shape(cr, &bg, &fg); |
636 | #else |
637 | osd_shape(cr); |
638 | #endif |
639 | #endif |
640 | |
641 | /* --------- draw zoom and dpad labels --------- */ |
642 | |
643 | #ifdef OSD_SHADOW_ENABLE |
644 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
645 | #ifndef OSD_NO_DPAD |
646 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
647 | #endif |
648 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
649 | #ifdef OSD_GPS_BUTTON |
650 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
651 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
652 | #endif |
653 | #endif |
654 | |
655 | osd_zoom_labels(cr, 1, 1); |
656 | #ifndef OSD_NO_DPAD |
657 | osd_dpad_labels(cr, 1, 1); |
658 | #endif |
659 | #ifndef OSD_COLOR |
660 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
661 | #else |
662 | osd_labels(cr, Z_RAD/3, TRUE); |
663 | #endif |
664 | #ifdef OSD_GPS_BUTTON |
665 | osd_dpad_gps(cr, 1, 1); |
666 | #ifndef OSD_COLOR |
667 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
668 | #else |
669 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
670 | #endif |
671 | #endif |
672 | |
673 | cairo_destroy(cr); |
674 | |
675 | osd_render_source_sel(osd); |
676 | } |
677 | |
678 | static void |
679 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
680 | { |
681 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
682 | |
683 | /* OSD itself uses some off-screen rendering, so check if the */ |
684 | /* offscreen buffer is present and create it if not */ |
685 | if(!priv->overlay) { |
686 | /* create overlay ... */ |
687 | priv->overlay = |
688 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
689 | |
690 | /* the initial OSD state is alway not-expanded */ |
691 | priv->map_source = |
692 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
693 | OSD_S_W+2, OSD_S_H+2); |
694 | |
695 | /* ... and render it */ |
696 | osd_render(osd); |
697 | } |
698 | |
699 | // now draw this onto the original context |
700 | cairo_t *cr = gdk_cairo_create(drawable); |
701 | |
702 | int x = OSD_X, y = OSD_Y; |
703 | if(OSD_X < 0) |
704 | x = osd->widget->allocation.width - OSD_W + OSD_X; |
705 | |
706 | if(OSD_Y < 0) |
707 | y = osd->widget->allocation.height - OSD_H + OSD_Y; |
708 | |
709 | cairo_set_source_surface(cr, priv->overlay, x, y); |
710 | cairo_paint(cr); |
711 | |
712 | #ifdef OSD_SOURCE_SEL |
713 | if(!priv->handler_id) { |
714 | /* the OSD source selection is not being animated */ |
715 | if(!priv->expanded) |
716 | x = osd->widget->allocation.width - OSD_S_W; |
717 | else |
718 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
719 | } else |
720 | x = priv->shift; |
721 | |
722 | y = OSD_S_Y; |
723 | if(OSD_S_Y < 0) { |
724 | if(!priv->expanded) |
725 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
726 | else |
727 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
728 | } |
729 | |
730 | cairo_set_source_surface(cr, priv->map_source, x, y); |
731 | cairo_paint(cr); |
732 | #endif |
733 | |
734 | cairo_destroy(cr); |
735 | } |
736 | |
737 | static void |
738 | osd_free(osm_gps_map_osd_t *osd) |
739 | { |
740 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
741 | |
742 | if(priv->handler_id) |
743 | gtk_timeout_remove(priv->handler_id); |
744 | |
745 | if (priv->overlay) |
746 | cairo_surface_destroy(priv->overlay); |
747 | |
748 | if (priv->map_source) |
749 | cairo_surface_destroy(priv->map_source); |
750 | |
751 | g_free(priv); |
752 | } |
753 | |
754 | static osm_gps_map_osd_t osd_classic = { |
755 | .draw = osd_draw, |
756 | .check = osd_check, |
757 | .render = osd_render, |
758 | .free = osd_free, |
759 | |
760 | .cb = NULL, |
761 | .data = NULL, |
762 | |
763 | .priv = NULL |
764 | }; |
765 | |
766 | /* this is the only function that's externally visible */ |
767 | void |
768 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
769 | { |
770 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
771 | |
772 | osd_classic.priv = priv; |
773 | |
774 | osm_gps_map_register_osd(map, &osd_classic); |
775 | } |
776 | |
777 | #ifdef OSD_GPS_BUTTON |
778 | /* below are osd specific functions which aren't used by osm-gps-map */ |
779 | /* but instead are to be used by the main application */ |
780 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
781 | gpointer data) { |
782 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
783 | g_return_if_fail (osd); |
784 | |
785 | osd->cb = cb; |
786 | osd->data = data; |
787 | |
788 | /* this may have changed the state of the gps button */ |
789 | /* we thus re-render the overlay */ |
790 | osd->render(osd); |
791 | |
792 | osm_gps_map_redraw(map); |
793 | } |
794 | #endif |
795 | |
796 | osd_button_t |
797 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
798 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
799 | g_return_val_if_fail (osd, OSD_NONE); |
800 | |
801 | return osd_check(osd, x, y); |
802 | } |