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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 <math.h> // M_PI/cos() |
23 | |
24 | /* parameters that can be overwritten from the config file: */ |
25 | /* OSD_DIAMETER */ |
26 | /* OSD_X, OSD_Y */ |
27 | |
28 | #ifndef USE_CAIRO |
29 | #error "OSD control display lacks a non-cairo implementation!" |
30 | #endif |
31 | |
32 | #include <cairo.h> |
33 | |
34 | #include "osm-gps-map.h" |
35 | #include "osm-gps-map-osd-classic.h" |
36 | |
37 | //the osd controls |
38 | typedef struct { |
39 | /* the offscreen representation of the OSD */ |
40 | cairo_surface_t *overlay; |
41 | |
42 | /* values to handle the "source" menu */ |
43 | cairo_surface_t *map_source; |
44 | gboolean expanded; |
45 | gint shift, dir, count; |
46 | gint handler_id; |
47 | gint width, height; |
48 | |
49 | } osd_priv_t; |
50 | |
51 | /* position and extent of bounding box */ |
52 | #ifndef OSD_X |
53 | #define OSD_X (10) |
54 | #endif |
55 | |
56 | #ifndef OSD_Y |
57 | #define OSD_Y (10) |
58 | #endif |
59 | |
60 | /* parameters of the direction shape */ |
61 | #ifndef OSD_DIAMETER |
62 | #define D_RAD (30) // diameter of dpad |
63 | #else |
64 | #define D_RAD (OSD_DIAMETER) |
65 | #endif |
66 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
67 | #define D_LEN (D_RAD/4) // length of arrow |
68 | #define D_WID (D_LEN) // width of arrow |
69 | |
70 | /* parameters of the "zoom" pad */ |
71 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
72 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
73 | |
74 | #ifdef OSD_SHADOW_ENABLE |
75 | /* shadow also depends on control size */ |
76 | #define OSD_SHADOW (D_RAD/6) |
77 | #else |
78 | #define OSD_SHADOW (0) |
79 | #endif |
80 | |
81 | /* normally the GPS button is in the center of the dpad. if there's */ |
82 | /* no dpad it will go into the zoom area */ |
83 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
84 | #define Z_GPS 1 |
85 | #else |
86 | #define Z_GPS 0 |
87 | #endif |
88 | |
89 | /* total width and height of controls incl. shadow */ |
90 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
91 | #if !Z_GPS |
92 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
93 | #else |
94 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
95 | #endif |
96 | |
97 | #ifdef OSD_SHADOW_ENABLE |
98 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
99 | #endif |
100 | |
101 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
102 | |
103 | #define Z_MID (Z_TOP + Z_RAD) |
104 | #define Z_BOT (Z_MID + Z_RAD) |
105 | #define Z_LEFT (Z_RAD) |
106 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
107 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
108 | |
109 | /* create the cairo shape used for the zoom buttons */ |
110 | static void |
111 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
112 | { |
113 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
114 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
115 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
116 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
117 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
118 | } |
119 | |
120 | /* ------------------- color/shadow functions ----------------- */ |
121 | |
122 | #ifndef OSD_COLOR |
123 | /* if no color has been specified we just use the gdks default colors */ |
124 | static void |
125 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
126 | GdkColor *fg, GdkColor *disabled) { |
127 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
128 | else gdk_cairo_set_source_color(cr, disabled); |
129 | cairo_set_line_width (cr, width); |
130 | } |
131 | #else |
132 | static void |
133 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
134 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
135 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
136 | cairo_set_line_width (cr, width); |
137 | } |
138 | #endif |
139 | |
140 | #ifdef OSD_SHADOW_ENABLE |
141 | static void |
142 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
143 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
144 | cairo_set_line_width (cr, width); |
145 | } |
146 | #endif |
147 | |
148 | #ifndef OSD_NO_DPAD |
149 | /* create the cairo shape used for the dpad */ |
150 | static void |
151 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
152 | { |
153 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
154 | } |
155 | #endif |
156 | |
157 | #ifdef OSD_SHADOW_ENABLE |
158 | static void |
159 | osd_shape_shadow(cairo_t *cr) { |
160 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
161 | cairo_fill (cr); |
162 | cairo_stroke (cr); |
163 | } |
164 | #endif |
165 | |
166 | #ifndef OSD_COLOR |
167 | /* if no color has been specified we just use the gdks default colors */ |
168 | static void |
169 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
170 | gdk_cairo_set_source_color(cr, bg); |
171 | cairo_fill_preserve (cr); |
172 | gdk_cairo_set_source_color(cr, fg); |
173 | cairo_set_line_width (cr, 1); |
174 | cairo_stroke (cr); |
175 | } |
176 | #else |
177 | static void |
178 | osd_shape(cairo_t *cr) { |
179 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
180 | cairo_fill_preserve (cr); |
181 | cairo_set_source_rgb (cr, OSD_COLOR); |
182 | cairo_set_line_width (cr, 1); |
183 | cairo_stroke (cr); |
184 | } |
185 | #endif |
186 | |
187 | |
188 | static gboolean |
189 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
190 | { |
191 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
192 | } |
193 | |
194 | #ifndef OSD_NO_DPAD |
195 | /* check whether x/y is within the dpad */ |
196 | static osd_button_t |
197 | osd_check_dpad(gint x, gint y) |
198 | { |
199 | /* within entire dpad circle */ |
200 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
201 | { |
202 | /* convert into position relative to dpads centre */ |
203 | x -= D_RAD; |
204 | y -= D_RAD; |
205 | |
206 | #ifdef OSD_GPS_BUTTON |
207 | /* check for dpad center goes here! */ |
208 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
209 | return OSD_GPS; |
210 | #endif |
211 | |
212 | if( y < 0 && abs(x) < abs(y)) |
213 | return OSD_UP; |
214 | |
215 | if( y > 0 && abs(x) < abs(y)) |
216 | return OSD_DOWN; |
217 | |
218 | if( x < 0 && abs(y) < abs(x)) |
219 | return OSD_LEFT; |
220 | |
221 | if( x > 0 && abs(y) < abs(x)) |
222 | return OSD_RIGHT; |
223 | |
224 | return OSD_BG; |
225 | } |
226 | return OSD_NONE; |
227 | } |
228 | #endif |
229 | |
230 | /* check whether x/y is within the zoom pads */ |
231 | static osd_button_t |
232 | osd_check_zoom(gint x, gint y) { |
233 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
234 | |
235 | /* within circle around (-) label */ |
236 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
237 | return OSD_OUT; |
238 | |
239 | /* within circle around (+) label */ |
240 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
241 | return OSD_IN; |
242 | |
243 | #if Z_GPS == 1 |
244 | /* within square around center */ |
245 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
246 | return OSD_GPS; |
247 | #endif |
248 | |
249 | /* between center of (-) button and center of entire zoom control area */ |
250 | if(x > OSD_LEFT && x < D_RAD) |
251 | return OSD_OUT; |
252 | |
253 | /* between center of (+) button and center of entire zoom control area */ |
254 | if(x < OSD_RIGHT && x > D_RAD) |
255 | return OSD_IN; |
256 | } |
257 | |
258 | return OSD_NONE; |
259 | } |
260 | |
261 | /* place source selection at right border */ |
262 | #define OSD_S_RAD (Z_RAD) |
263 | #define OSD_S_X (-OSD_X) |
264 | #define OSD_S_Y (OSD_Y) |
265 | #define OSD_S_PW (2 * Z_RAD) |
266 | #define OSD_S_W (OSD_S_PW) |
267 | #define OSD_S_PH (2 * Z_RAD) |
268 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
269 | |
270 | /* size of usable area when expanded */ |
271 | #define OSD_S_AREA_W (priv->width) |
272 | #define OSD_S_AREA_H (priv->height) |
273 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
274 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
275 | |
276 | /* internal value to draw the arrow on the "puller" */ |
277 | #define OSD_S_D0 (OSD_S_RAD/2) |
278 | #ifndef OSD_FONT_SIZE |
279 | #define OSD_FONT_SIZE 16.0 |
280 | #endif |
281 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
282 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
283 | |
284 | static void |
285 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
286 | if(!priv->expanded) { |
287 | /* just draw the puller */ |
288 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
289 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
290 | cairo_line_to (cr, x + OSD_S_PW, y); |
291 | } else { |
292 | /* draw the puller and the area itself */ |
293 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
294 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
295 | if(OSD_S_Y > 0) { |
296 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
297 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
298 | } else { |
299 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
300 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
301 | cairo_line_to (cr, x + OSD_S_PW, y); |
302 | } |
303 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
304 | cairo_close_path (cr); |
305 | } |
306 | } |
307 | |
308 | static void |
309 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
310 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
311 | |
312 | int py = offset + OSD_S_RAD - OSD_S_D0; |
313 | |
314 | if(!priv->expanded) { |
315 | /* draw the "puller" open (<) arrow */ |
316 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
317 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
318 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
319 | } else { |
320 | if(OSD_S_Y < 0) |
321 | py += OSD_S_AREA_H - OSD_S_PH; |
322 | |
323 | /* draw the "puller" close (>) arrow */ |
324 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
325 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
326 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
327 | cairo_stroke(cr); |
328 | |
329 | /* don't draw a shadow for the text content */ |
330 | if(offset == 1) { |
331 | gint source; |
332 | g_object_get(osd->widget, "map-source", &source, NULL); |
333 | |
334 | cairo_select_font_face (cr, "Sans", |
335 | CAIRO_FONT_SLANT_NORMAL, |
336 | CAIRO_FONT_WEIGHT_BOLD); |
337 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
338 | |
339 | int i, step = (priv->height - 2*OSD_TEXT_BORDER) |
340 | / OSM_GPS_MAP_SOURCE_LAST; |
341 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
342 | cairo_text_extents_t extents; |
343 | const char *src = osm_gps_map_source_get_friendly_name(i); |
344 | cairo_text_extents (cr, src, &extents); |
345 | |
346 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
347 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
348 | |
349 | /* draw filled rectangle if selected */ |
350 | if(source == i) { |
351 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
352 | y - OSD_TEXT_SKIP, |
353 | priv->width - OSD_TEXT_BORDER, |
354 | step + OSD_TEXT_SKIP); |
355 | cairo_fill(cr); |
356 | |
357 | /* temprarily draw with background color */ |
358 | #ifndef OSD_COLOR |
359 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
360 | gdk_cairo_set_source_color(cr, &bg); |
361 | #else |
362 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
363 | #endif |
364 | } |
365 | |
366 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
367 | cairo_show_text (cr, src); |
368 | |
369 | /* restore color */ |
370 | if(source == i) { |
371 | #ifndef OSD_COLOR |
372 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
373 | gdk_cairo_set_source_color(cr, &fg); |
374 | #else |
375 | cairo_set_source_rgb (cr, OSD_COLOR); |
376 | #endif |
377 | } |
378 | } |
379 | } |
380 | } |
381 | } |
382 | |
383 | static void |
384 | osd_render_source_sel(osm_gps_map_osd_t *osd) { |
385 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
386 | |
387 | #ifndef OSD_COLOR |
388 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
389 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
390 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
391 | #endif |
392 | |
393 | /* draw source selector */ |
394 | cairo_t *cr = cairo_create(priv->map_source); |
395 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
396 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
397 | cairo_paint(cr); |
398 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
399 | |
400 | #ifdef OSD_SHADOW_ENABLE |
401 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
402 | osd_shape_shadow(cr); |
403 | #endif |
404 | |
405 | osd_source_shape(priv, cr, 1, 1); |
406 | #ifndef OSD_COLOR |
407 | osd_shape(cr, &bg, &fg); |
408 | #else |
409 | osd_shape(cr); |
410 | #endif |
411 | |
412 | #ifdef OSD_SHADOW_ENABLE |
413 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
414 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
415 | cairo_stroke (cr); |
416 | #endif |
417 | #ifndef OSD_COLOR |
418 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
419 | #else |
420 | osd_labels(cr, Z_RAD/3, TRUE); |
421 | #endif |
422 | osd_source_content(osd, cr, 1); |
423 | cairo_stroke (cr); |
424 | |
425 | cairo_destroy(cr); |
426 | } |
427 | |
428 | static void |
429 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
430 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
431 | |
432 | /* re-allocate offscreen bitmap */ |
433 | g_assert (priv->map_source); |
434 | |
435 | int w = OSD_S_W, h = OSD_S_H; |
436 | if(priv->expanded) { |
437 | /* ... and right of it the waypoint id */ |
438 | cairo_text_extents_t extents; |
439 | |
440 | /* determine content size */ |
441 | cairo_t *cr = cairo_create(priv->map_source); |
442 | cairo_select_font_face (cr, "Sans", |
443 | CAIRO_FONT_SLANT_NORMAL, |
444 | CAIRO_FONT_WEIGHT_BOLD); |
445 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
446 | |
447 | /* calculate menu size */ |
448 | int i, max_h = 0, max_w = 0; |
449 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
450 | const char *src = osm_gps_map_source_get_friendly_name(i); |
451 | cairo_text_extents (cr, src, &extents); |
452 | |
453 | // printf("Source %d: %s = %f %f\n", i, src, |
454 | // extents.width, extents.height); |
455 | |
456 | if(extents.width > max_w) max_w = extents.width; |
457 | if(extents.height > max_h) max_h = extents.height; |
458 | } |
459 | cairo_destroy(cr); |
460 | |
461 | priv->width = max_w + 2*OSD_TEXT_BORDER; |
462 | priv->height = OSM_GPS_MAP_SOURCE_LAST * |
463 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
464 | |
465 | w = OSD_S_EXP_W; |
466 | h = OSD_S_EXP_H; |
467 | } |
468 | |
469 | cairo_surface_destroy(priv->map_source); |
470 | priv->map_source = |
471 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
472 | |
473 | osd_render_source_sel(osd); |
474 | |
475 | } |
476 | |
477 | #define OSD_HZ 15 |
478 | #define OSD_TIME 500 |
479 | |
480 | static gboolean osd_source_animate(gpointer data) { |
481 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
482 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
483 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
484 | gboolean done = FALSE; |
485 | priv->count += priv->dir; |
486 | |
487 | /* shifting in */ |
488 | if(priv->dir < 0) { |
489 | if(priv->count <= 0) { |
490 | priv->count = 0; |
491 | done = TRUE; |
492 | } |
493 | } else { |
494 | if(priv->count >= 1000) { |
495 | priv->expanded = FALSE; |
496 | osd_source_reallocate(osd); |
497 | |
498 | priv->count = 1000; |
499 | done = TRUE; |
500 | } |
501 | } |
502 | |
503 | |
504 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
505 | |
506 | /* simple linear mapping */ |
507 | // priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
508 | // (diff * priv->count)/1000; |
509 | |
510 | /* nicer sinoid mapping */ |
511 | float m = 0.5-cos(priv->count * M_PI / 1000.0)/2; |
512 | priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
513 | m * diff; |
514 | |
515 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
516 | |
517 | if(done) |
518 | priv->handler_id = 0; |
519 | |
520 | return !done; |
521 | } |
522 | |
523 | /* switch between expand and collapse mode of source selection */ |
524 | static void |
525 | osd_source_toggle(osm_gps_map_osd_t *osd) |
526 | { |
527 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
528 | |
529 | /* ignore clicks while animation is running */ |
530 | if(priv->handler_id) |
531 | return; |
532 | |
533 | /* expand immediately, collapse is handle at the end of the collapse animation */ |
534 | if(!priv->expanded) { |
535 | priv->expanded = TRUE; |
536 | osd_source_reallocate(osd); |
537 | |
538 | priv->count = 1000; |
539 | priv->shift = osd->widget->allocation.width - OSD_S_W; |
540 | priv->dir = -1000/OSD_HZ; |
541 | } else { |
542 | priv->count = 0; |
543 | priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
544 | priv->dir = +1000/OSD_HZ; |
545 | } |
546 | |
547 | priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd); |
548 | } |
549 | |
550 | static osd_button_t |
551 | osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
552 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
553 | |
554 | if(!priv->expanded) |
555 | x -= osd->widget->allocation.width - OSD_S_W; |
556 | else |
557 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
558 | |
559 | if(OSD_S_Y > 0) |
560 | y -= OSD_S_Y; |
561 | else |
562 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
563 | |
564 | /* within square around puller? */ |
565 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
566 | /* really within puller shape? */ |
567 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
568 | /* expand source selector */ |
569 | osd_source_toggle(osd); |
570 | |
571 | /* tell upper layers that user clicked some background element */ |
572 | /* of the OSD */ |
573 | return OSD_BG; |
574 | } |
575 | } |
576 | return OSD_NONE; |
577 | } |
578 | |
579 | static osd_button_t |
580 | osd_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
581 | osd_button_t but = OSD_NONE; |
582 | |
583 | #ifdef OSD_SOURCE_SEL |
584 | /* the source selection area is handles internally */ |
585 | but = osd_source_check(osd, x, y); |
586 | if(but != OSD_NONE) |
587 | return but; |
588 | #endif |
589 | |
590 | x -= OSD_X; |
591 | y -= OSD_Y; |
592 | |
593 | if(OSD_X < 0) |
594 | x -= (osd->widget->allocation.width - OSD_W); |
595 | |
596 | if(OSD_Y < 0) |
597 | y -= (osd->widget->allocation.height - OSD_H); |
598 | |
599 | /* first do a rough test for the OSD area. */ |
600 | /* this is just to avoid an unnecessary detailed test */ |
601 | if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) { |
602 | #ifndef OSD_NO_DPAD |
603 | but = osd_check_dpad(x, y); |
604 | #endif |
605 | |
606 | if(but == OSD_NONE) |
607 | but = osd_check_zoom(x, y); |
608 | } |
609 | |
610 | return but; |
611 | } |
612 | |
613 | #ifndef OSD_NO_DPAD |
614 | static void |
615 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
616 | /* move reference to dpad center */ |
617 | x += D_RAD; |
618 | y += D_RAD; |
619 | |
620 | const static gint offset[][3][2] = { |
621 | /* left arrow/triangle */ |
622 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
623 | /* right arrow/triangle */ |
624 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
625 | /* top arrow/triangle */ |
626 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
627 | /* bottom arrow/triangle */ |
628 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
629 | }; |
630 | |
631 | int i; |
632 | for(i=0;i<4;i++) { |
633 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
634 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
635 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
636 | } |
637 | } |
638 | #endif |
639 | |
640 | #ifdef OSD_GPS_BUTTON |
641 | /* draw the satellite dish icon in the center of the dpad */ |
642 | #define GPS_V0 (D_RAD/7) |
643 | #define GPS_V1 (D_RAD/10) |
644 | #define GPS_V2 (D_RAD/5) |
645 | |
646 | /* draw a satellite receiver dish */ |
647 | /* this is either drawn in the center of the dpad (if present) */ |
648 | /* or in the middle of the zoom area */ |
649 | static void |
650 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
651 | /* move reference to dpad center */ |
652 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
653 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
654 | |
655 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
656 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
657 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
658 | cairo_close_path (cr); |
659 | |
660 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
661 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
662 | cairo_close_path (cr); |
663 | |
664 | x += GPS_V1; |
665 | cairo_move_to (cr, x, y-GPS_V2); |
666 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
667 | } |
668 | #endif |
669 | |
670 | #define Z_LEN (2*Z_RAD/3) |
671 | |
672 | static void |
673 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
674 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
675 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
676 | |
677 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
678 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
679 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
680 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
681 | } |
682 | |
683 | static void |
684 | osd_render(osm_gps_map_osd_t *osd) { |
685 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
686 | |
687 | #ifndef OSD_COLOR |
688 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
689 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
690 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
691 | #endif |
692 | |
693 | /* first fill with transparency */ |
694 | cairo_t *cr = cairo_create(priv->overlay); |
695 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
696 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
697 | cairo_paint(cr); |
698 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
699 | |
700 | /* --------- draw zoom and dpad shape shadow ----------- */ |
701 | #ifdef OSD_SHADOW_ENABLE |
702 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
703 | osd_shape_shadow(cr); |
704 | #ifndef OSD_NO_DPAD |
705 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
706 | osd_shape_shadow(cr); |
707 | #endif |
708 | #endif |
709 | |
710 | /* --------- draw zoom and dpad shape ----------- */ |
711 | |
712 | osd_zoom_shape(cr, 1, 1); |
713 | #ifndef OSD_COLOR |
714 | osd_shape(cr, &bg, &fg); |
715 | #else |
716 | osd_shape(cr); |
717 | #endif |
718 | #ifndef OSD_NO_DPAD |
719 | osd_dpad_shape(cr, 1, 1); |
720 | #ifndef OSD_COLOR |
721 | osd_shape(cr, &bg, &fg); |
722 | #else |
723 | osd_shape(cr); |
724 | #endif |
725 | #endif |
726 | |
727 | /* --------- draw zoom and dpad labels --------- */ |
728 | |
729 | #ifdef OSD_SHADOW_ENABLE |
730 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
731 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
732 | #ifndef OSD_NO_DPAD |
733 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
734 | #endif |
735 | cairo_stroke(cr); |
736 | #ifdef OSD_GPS_BUTTON |
737 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
738 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
739 | cairo_stroke(cr); |
740 | #endif |
741 | #endif |
742 | |
743 | #ifndef OSD_COLOR |
744 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
745 | #else |
746 | osd_labels(cr, Z_RAD/3, TRUE); |
747 | #endif |
748 | osd_zoom_labels(cr, 1, 1); |
749 | #ifndef OSD_NO_DPAD |
750 | osd_dpad_labels(cr, 1, 1); |
751 | #endif |
752 | cairo_stroke(cr); |
753 | |
754 | #ifndef OSD_COLOR |
755 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
756 | #else |
757 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
758 | #endif |
759 | #ifdef OSD_GPS_BUTTON |
760 | osd_dpad_gps(cr, 1, 1); |
761 | #endif |
762 | cairo_stroke(cr); |
763 | |
764 | cairo_destroy(cr); |
765 | |
766 | osd_render_source_sel(osd); |
767 | } |
768 | |
769 | static void |
770 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
771 | { |
772 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
773 | |
774 | /* OSD itself uses some off-screen rendering, so check if the */ |
775 | /* offscreen buffer is present and create it if not */ |
776 | if(!priv->overlay) { |
777 | /* create overlay ... */ |
778 | priv->overlay = |
779 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
780 | |
781 | /* the initial OSD state is alway not-expanded */ |
782 | priv->map_source = |
783 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
784 | OSD_S_W+2, OSD_S_H+2); |
785 | |
786 | /* ... and render it */ |
787 | osd_render(osd); |
788 | } |
789 | |
790 | // now draw this onto the original context |
791 | cairo_t *cr = gdk_cairo_create(drawable); |
792 | |
793 | int x = OSD_X, y = OSD_Y; |
794 | if(OSD_X < 0) |
795 | x = osd->widget->allocation.width - OSD_W + OSD_X; |
796 | |
797 | if(OSD_Y < 0) |
798 | y = osd->widget->allocation.height - OSD_H + OSD_Y; |
799 | |
800 | cairo_set_source_surface(cr, priv->overlay, x, y); |
801 | cairo_paint(cr); |
802 | |
803 | #ifdef OSD_SOURCE_SEL |
804 | if(!priv->handler_id) { |
805 | /* the OSD source selection is not being animated */ |
806 | if(!priv->expanded) |
807 | x = osd->widget->allocation.width - OSD_S_W; |
808 | else |
809 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
810 | } else |
811 | x = priv->shift; |
812 | |
813 | y = OSD_S_Y; |
814 | if(OSD_S_Y < 0) { |
815 | if(!priv->expanded) |
816 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
817 | else |
818 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
819 | } |
820 | |
821 | cairo_set_source_surface(cr, priv->map_source, x, y); |
822 | cairo_paint(cr); |
823 | #endif |
824 | |
825 | cairo_destroy(cr); |
826 | } |
827 | |
828 | static void |
829 | osd_free(osm_gps_map_osd_t *osd) |
830 | { |
831 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
832 | |
833 | if(priv->handler_id) |
834 | gtk_timeout_remove(priv->handler_id); |
835 | |
836 | if (priv->overlay) |
837 | cairo_surface_destroy(priv->overlay); |
838 | |
839 | if (priv->map_source) |
840 | cairo_surface_destroy(priv->map_source); |
841 | |
842 | g_free(priv); |
843 | } |
844 | |
845 | /* this is the only function that's externally visible */ |
846 | static gboolean |
847 | osd_busy(osm_gps_map_osd_t *osd) |
848 | { |
849 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
850 | return (priv->handler_id != 0); |
851 | } |
852 | |
853 | static osm_gps_map_osd_t osd_classic = { |
854 | .draw = osd_draw, |
855 | .check = osd_check, |
856 | .render = osd_render, |
857 | .free = osd_free, |
858 | .busy = osd_busy, |
859 | |
860 | .cb = NULL, |
861 | .data = NULL, |
862 | |
863 | .priv = NULL |
864 | }; |
865 | |
866 | /* this is the only function that's externally visible */ |
867 | void |
868 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
869 | { |
870 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
871 | |
872 | osd_classic.priv = priv; |
873 | |
874 | osm_gps_map_register_osd(map, &osd_classic); |
875 | } |
876 | |
877 | #ifdef OSD_GPS_BUTTON |
878 | /* below are osd specific functions which aren't used by osm-gps-map */ |
879 | /* but instead are to be used by the main application */ |
880 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
881 | gpointer data) { |
882 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
883 | g_return_if_fail (osd); |
884 | |
885 | osd->cb = cb; |
886 | osd->data = data; |
887 | |
888 | /* this may have changed the state of the gps button */ |
889 | /* we thus re-render the overlay */ |
890 | osd->render(osd); |
891 | |
892 | osm_gps_map_redraw(map); |
893 | } |
894 | #endif |
895 | |
896 | osd_button_t |
897 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
898 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
899 | g_return_val_if_fail (osd, OSD_NONE); |
900 | |
901 | return osd_check(osd, x, y); |
902 | } |