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OSD source selection working
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 | #ifdef OSD_SOURCE_SEL |
43 | /* values to handle the "source" menu */ |
44 | cairo_surface_t *map_source; |
45 | gboolean expanded; |
46 | gint shift, dir, count; |
47 | gint handler_id; |
48 | gint width, height; |
49 | #endif |
50 | |
51 | } osd_priv_t; |
52 | |
53 | /* position and extent of bounding box */ |
54 | #ifndef OSD_X |
55 | #define OSD_X (10) |
56 | #endif |
57 | |
58 | #ifndef OSD_Y |
59 | #define OSD_Y (10) |
60 | #endif |
61 | |
62 | /* parameters of the direction shape */ |
63 | #ifndef OSD_DIAMETER |
64 | #define D_RAD (30) // diameter of dpad |
65 | #else |
66 | #define D_RAD (OSD_DIAMETER) |
67 | #endif |
68 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
69 | #define D_LEN (D_RAD/4) // length of arrow |
70 | #define D_WID (D_LEN) // width of arrow |
71 | |
72 | /* parameters of the "zoom" pad */ |
73 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
74 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
75 | |
76 | #ifdef OSD_SHADOW_ENABLE |
77 | /* shadow also depends on control size */ |
78 | #define OSD_SHADOW (D_RAD/6) |
79 | #else |
80 | #define OSD_SHADOW (0) |
81 | #endif |
82 | |
83 | /* normally the GPS button is in the center of the dpad. if there's */ |
84 | /* no dpad it will go into the zoom area */ |
85 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
86 | #define Z_GPS 1 |
87 | #else |
88 | #define Z_GPS 0 |
89 | #endif |
90 | |
91 | /* total width and height of controls incl. shadow */ |
92 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
93 | #if !Z_GPS |
94 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
95 | #else |
96 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
97 | #endif |
98 | |
99 | #ifdef OSD_SHADOW_ENABLE |
100 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
101 | #endif |
102 | |
103 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
104 | |
105 | #define Z_MID (Z_TOP + Z_RAD) |
106 | #define Z_BOT (Z_MID + Z_RAD) |
107 | #define Z_LEFT (Z_RAD) |
108 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
109 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
110 | |
111 | /* create the cairo shape used for the zoom buttons */ |
112 | static void |
113 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
114 | { |
115 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
116 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
117 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
118 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
119 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
120 | } |
121 | |
122 | /* ------------------- color/shadow functions ----------------- */ |
123 | |
124 | #ifndef OSD_COLOR |
125 | /* if no color has been specified we just use the gdks default colors */ |
126 | static void |
127 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
128 | GdkColor *fg, GdkColor *disabled) { |
129 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
130 | else gdk_cairo_set_source_color(cr, disabled); |
131 | cairo_set_line_width (cr, width); |
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 | } |
140 | #endif |
141 | |
142 | #ifdef OSD_SHADOW_ENABLE |
143 | static void |
144 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
145 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
146 | cairo_set_line_width (cr, width); |
147 | } |
148 | #endif |
149 | |
150 | #ifndef OSD_NO_DPAD |
151 | /* create the cairo shape used for the dpad */ |
152 | static void |
153 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
154 | { |
155 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
156 | } |
157 | #endif |
158 | |
159 | #ifdef OSD_SHADOW_ENABLE |
160 | static void |
161 | osd_shape_shadow(cairo_t *cr) { |
162 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
163 | cairo_fill (cr); |
164 | cairo_stroke (cr); |
165 | } |
166 | #endif |
167 | |
168 | #ifndef OSD_COLOR |
169 | /* if no color has been specified we just use the gdks default colors */ |
170 | static void |
171 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
172 | gdk_cairo_set_source_color(cr, bg); |
173 | cairo_fill_preserve (cr); |
174 | gdk_cairo_set_source_color(cr, fg); |
175 | cairo_set_line_width (cr, 1); |
176 | cairo_stroke (cr); |
177 | } |
178 | #else |
179 | static void |
180 | osd_shape(cairo_t *cr) { |
181 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
182 | cairo_fill_preserve (cr); |
183 | cairo_set_source_rgb (cr, OSD_COLOR); |
184 | cairo_set_line_width (cr, 1); |
185 | cairo_stroke (cr); |
186 | } |
187 | #endif |
188 | |
189 | |
190 | static gboolean |
191 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
192 | { |
193 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
194 | } |
195 | |
196 | #ifndef OSD_NO_DPAD |
197 | /* check whether x/y is within the dpad */ |
198 | static osd_button_t |
199 | osd_check_dpad(gint x, gint y) |
200 | { |
201 | /* within entire dpad circle */ |
202 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
203 | { |
204 | /* convert into position relative to dpads centre */ |
205 | x -= D_RAD; |
206 | y -= D_RAD; |
207 | |
208 | #ifdef OSD_GPS_BUTTON |
209 | /* check for dpad center goes here! */ |
210 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
211 | return OSD_GPS; |
212 | #endif |
213 | |
214 | if( y < 0 && abs(x) < abs(y)) |
215 | return OSD_UP; |
216 | |
217 | if( y > 0 && abs(x) < abs(y)) |
218 | return OSD_DOWN; |
219 | |
220 | if( x < 0 && abs(y) < abs(x)) |
221 | return OSD_LEFT; |
222 | |
223 | if( x > 0 && abs(y) < abs(x)) |
224 | return OSD_RIGHT; |
225 | |
226 | return OSD_BG; |
227 | } |
228 | return OSD_NONE; |
229 | } |
230 | #endif |
231 | |
232 | /* check whether x/y is within the zoom pads */ |
233 | static osd_button_t |
234 | osd_check_zoom(gint x, gint y) { |
235 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
236 | |
237 | /* within circle around (-) label */ |
238 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
239 | return OSD_OUT; |
240 | |
241 | /* within circle around (+) label */ |
242 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
243 | return OSD_IN; |
244 | |
245 | #if Z_GPS == 1 |
246 | /* within square around center */ |
247 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
248 | return OSD_GPS; |
249 | #endif |
250 | |
251 | /* between center of (-) button and center of entire zoom control area */ |
252 | if(x > OSD_LEFT && x < D_RAD) |
253 | return OSD_OUT; |
254 | |
255 | /* between center of (+) button and center of entire zoom control area */ |
256 | if(x < OSD_RIGHT && x > D_RAD) |
257 | return OSD_IN; |
258 | } |
259 | |
260 | return OSD_NONE; |
261 | } |
262 | |
263 | #ifdef OSD_SOURCE_SEL |
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 expanded */ |
275 | #define OSD_S_AREA_W (priv->width) |
276 | #define OSD_S_AREA_H (priv->height) |
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 | #ifndef OSD_FONT_SIZE |
283 | #define OSD_FONT_SIZE 16.0 |
284 | #endif |
285 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
286 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
287 | |
288 | /* draw the shape of the source selection OSD, either only the puller (not expanded) */ |
289 | /* or the entire menu incl. the puller (expanded) */ |
290 | static void |
291 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
292 | if(!priv->expanded) { |
293 | /* just draw the puller */ |
294 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
295 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
296 | cairo_line_to (cr, x + OSD_S_PW, y); |
297 | } else { |
298 | /* draw the puller and the area itself */ |
299 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
300 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
301 | if(OSD_S_Y > 0) { |
302 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
303 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
304 | } else { |
305 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
306 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
307 | cairo_line_to (cr, x + OSD_S_PW, y); |
308 | } |
309 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
310 | cairo_close_path (cr); |
311 | } |
312 | } |
313 | |
314 | static void |
315 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
316 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
317 | |
318 | int py = offset + OSD_S_RAD - OSD_S_D0; |
319 | |
320 | if(!priv->expanded) { |
321 | /* draw the "puller" open (<) arrow */ |
322 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
323 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
324 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
325 | } else { |
326 | if(OSD_S_Y < 0) |
327 | py += OSD_S_AREA_H - OSD_S_PH; |
328 | |
329 | /* draw the "puller" close (>) arrow */ |
330 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
331 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
332 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
333 | cairo_stroke(cr); |
334 | |
335 | /* don't draw a shadow for the text content */ |
336 | if(offset == 1) { |
337 | gint source; |
338 | g_object_get(osd->widget, "map-source", &source, NULL); |
339 | |
340 | cairo_select_font_face (cr, "Sans", |
341 | CAIRO_FONT_SLANT_NORMAL, |
342 | CAIRO_FONT_WEIGHT_BOLD); |
343 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
344 | |
345 | int i, step = (priv->height - 2*OSD_TEXT_BORDER) / |
346 | OSM_GPS_MAP_SOURCE_LAST; |
347 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
348 | cairo_text_extents_t extents; |
349 | const char *src = osm_gps_map_source_get_friendly_name(i); |
350 | cairo_text_extents (cr, src, &extents); |
351 | |
352 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
353 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
354 | |
355 | /* draw filled rectangle if selected */ |
356 | if(source == i) { |
357 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
358 | y - OSD_TEXT_SKIP, |
359 | priv->width - OSD_TEXT_BORDER, |
360 | step + OSD_TEXT_SKIP); |
361 | cairo_fill(cr); |
362 | |
363 | /* temprarily draw with background color */ |
364 | #ifndef OSD_COLOR |
365 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
366 | gdk_cairo_set_source_color(cr, &bg); |
367 | #else |
368 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
369 | #endif |
370 | } |
371 | |
372 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
373 | cairo_show_text (cr, src); |
374 | |
375 | /* restore color */ |
376 | if(source == i) { |
377 | #ifndef OSD_COLOR |
378 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
379 | gdk_cairo_set_source_color(cr, &fg); |
380 | #else |
381 | cairo_set_source_rgb (cr, OSD_COLOR); |
382 | #endif |
383 | } |
384 | } |
385 | } |
386 | } |
387 | } |
388 | |
389 | static void |
390 | osd_render_source_sel(osm_gps_map_osd_t *osd) { |
391 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
392 | |
393 | #ifndef OSD_COLOR |
394 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
395 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
396 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
397 | #endif |
398 | |
399 | /* draw source selector */ |
400 | cairo_t *cr = cairo_create(priv->map_source); |
401 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
402 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
403 | cairo_paint(cr); |
404 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
405 | |
406 | #ifdef OSD_SHADOW_ENABLE |
407 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
408 | osd_shape_shadow(cr); |
409 | #endif |
410 | |
411 | osd_source_shape(priv, cr, 1, 1); |
412 | #ifndef OSD_COLOR |
413 | osd_shape(cr, &bg, &fg); |
414 | #else |
415 | osd_shape(cr); |
416 | #endif |
417 | |
418 | #ifdef OSD_SHADOW_ENABLE |
419 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
420 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
421 | cairo_stroke (cr); |
422 | #endif |
423 | #ifndef OSD_COLOR |
424 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
425 | #else |
426 | osd_labels(cr, Z_RAD/3, TRUE); |
427 | #endif |
428 | osd_source_content(osd, cr, 1); |
429 | cairo_stroke (cr); |
430 | |
431 | cairo_destroy(cr); |
432 | } |
433 | |
434 | /* re-allocate the buffer used to draw the menu. This is used */ |
435 | /* to collapse/expand the buffer */ |
436 | static void |
437 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
438 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
439 | |
440 | /* re-allocate offscreen bitmap */ |
441 | g_assert (priv->map_source); |
442 | |
443 | int w = OSD_S_W, h = OSD_S_H; |
444 | if(priv->expanded) { |
445 | /* ... and right of it the waypoint id */ |
446 | cairo_text_extents_t extents; |
447 | |
448 | /* determine content size */ |
449 | cairo_t *cr = cairo_create(priv->map_source); |
450 | cairo_select_font_face (cr, "Sans", |
451 | CAIRO_FONT_SLANT_NORMAL, |
452 | CAIRO_FONT_WEIGHT_BOLD); |
453 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
454 | |
455 | /* calculate menu size */ |
456 | int i, max_h = 0, max_w = 0; |
457 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
458 | const char *src = osm_gps_map_source_get_friendly_name(i); |
459 | cairo_text_extents (cr, src, &extents); |
460 | |
461 | if(extents.width > max_w) max_w = extents.width; |
462 | if(extents.height > max_h) max_h = extents.height; |
463 | } |
464 | cairo_destroy(cr); |
465 | |
466 | priv->width = max_w + 2*OSD_TEXT_BORDER; |
467 | priv->height = OSM_GPS_MAP_SOURCE_LAST * |
468 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
469 | |
470 | w = OSD_S_EXP_W; |
471 | h = OSD_S_EXP_H; |
472 | } |
473 | |
474 | cairo_surface_destroy(priv->map_source); |
475 | priv->map_source = |
476 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
477 | |
478 | osd_render_source_sel(osd); |
479 | |
480 | } |
481 | |
482 | #define OSD_HZ 15 |
483 | #define OSD_TIME 500 |
484 | |
485 | static gboolean osd_source_animate(gpointer data) { |
486 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
487 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
488 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
489 | gboolean done = FALSE; |
490 | priv->count += priv->dir; |
491 | |
492 | /* shifting in */ |
493 | if(priv->dir < 0) { |
494 | if(priv->count <= 0) { |
495 | priv->count = 0; |
496 | done = TRUE; |
497 | } |
498 | } else { |
499 | if(priv->count >= 1000) { |
500 | priv->expanded = FALSE; |
501 | osd_source_reallocate(osd); |
502 | |
503 | priv->count = 1000; |
504 | done = TRUE; |
505 | } |
506 | } |
507 | |
508 | |
509 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
510 | |
511 | /* nicer sinoid mapping */ |
512 | float m = 0.5-cos(priv->count * M_PI / 1000.0)/2; |
513 | priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
514 | m * diff; |
515 | |
516 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
517 | |
518 | if(done) |
519 | priv->handler_id = 0; |
520 | |
521 | return !done; |
522 | } |
523 | |
524 | /* switch between expand and collapse mode of source selection */ |
525 | static void |
526 | osd_source_toggle(osm_gps_map_osd_t *osd) |
527 | { |
528 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
529 | |
530 | /* ignore clicks while animation is running */ |
531 | if(priv->handler_id) |
532 | return; |
533 | |
534 | /* expand immediately, collapse is handle at the end of the collapse animation */ |
535 | if(!priv->expanded) { |
536 | priv->expanded = TRUE; |
537 | osd_source_reallocate(osd); |
538 | |
539 | priv->count = 1000; |
540 | priv->shift = osd->widget->allocation.width - OSD_S_W; |
541 | priv->dir = -1000/OSD_HZ; |
542 | } else { |
543 | priv->count = 0; |
544 | priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
545 | priv->dir = +1000/OSD_HZ; |
546 | } |
547 | |
548 | priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd); |
549 | } |
550 | |
551 | /* check if the user clicked inside the source selection area */ |
552 | static osd_button_t |
553 | osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
554 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
555 | |
556 | if(!priv->expanded) |
557 | x -= osd->widget->allocation.width - OSD_S_W; |
558 | else |
559 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
560 | |
561 | if(OSD_S_Y > 0) |
562 | y -= OSD_S_Y; |
563 | else |
564 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
565 | |
566 | /* within square around puller? */ |
567 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
568 | /* really within puller shape? */ |
569 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
570 | /* expand source selector */ |
571 | osd_source_toggle(osd); |
572 | |
573 | /* tell upper layers that user clicked some background element */ |
574 | /* of the OSD */ |
575 | return OSD_BG; |
576 | } |
577 | } |
578 | |
579 | /* check for clicks into data area */ |
580 | if(priv->expanded && !priv->handler_id) { |
581 | if(x > OSD_S_PW && |
582 | x < OSD_S_PW + OSD_S_EXP_W && |
583 | y > 0 && |
584 | y < OSD_S_EXP_H) { |
585 | |
586 | int step = (priv->height - 2*OSD_TEXT_BORDER) |
587 | / OSM_GPS_MAP_SOURCE_LAST; |
588 | |
589 | y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP; |
590 | y /= step; |
591 | y += 1; |
592 | |
593 | gint old = 0; |
594 | g_object_get(osd->widget, "map-source", &old, NULL); |
595 | |
596 | if(y > OSM_GPS_MAP_SOURCE_NULL && |
597 | y <= OSM_GPS_MAP_SOURCE_LAST && |
598 | old != y) { |
599 | g_object_set(osd->widget, "map-source", y, NULL); |
600 | |
601 | osd_render_source_sel(osd); |
602 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
603 | } |
604 | |
605 | /* return "clicked in OSD background" to prevent further */ |
606 | /* processing by application */ |
607 | return OSD_BG; |
608 | } |
609 | } |
610 | |
611 | return OSD_NONE; |
612 | } |
613 | #endif // OSD_SOURCE_SEL |
614 | |
615 | static osd_button_t |
616 | osd_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
617 | osd_button_t but = OSD_NONE; |
618 | |
619 | #ifdef OSD_SOURCE_SEL |
620 | /* the source selection area is handles internally */ |
621 | but = osd_source_check(osd, x, y); |
622 | if(but != OSD_NONE) |
623 | return but; |
624 | #endif |
625 | |
626 | x -= OSD_X; |
627 | y -= OSD_Y; |
628 | |
629 | if(OSD_X < 0) |
630 | x -= (osd->widget->allocation.width - OSD_W); |
631 | |
632 | if(OSD_Y < 0) |
633 | y -= (osd->widget->allocation.height - OSD_H); |
634 | |
635 | /* first do a rough test for the OSD area. */ |
636 | /* this is just to avoid an unnecessary detailed test */ |
637 | if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) { |
638 | #ifndef OSD_NO_DPAD |
639 | but = osd_check_dpad(x, y); |
640 | #endif |
641 | |
642 | if(but == OSD_NONE) |
643 | but = osd_check_zoom(x, y); |
644 | } |
645 | |
646 | return but; |
647 | } |
648 | |
649 | #ifndef OSD_NO_DPAD |
650 | static void |
651 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
652 | /* move reference to dpad center */ |
653 | x += D_RAD; |
654 | y += D_RAD; |
655 | |
656 | const static gint offset[][3][2] = { |
657 | /* left arrow/triangle */ |
658 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
659 | /* right arrow/triangle */ |
660 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
661 | /* top arrow/triangle */ |
662 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
663 | /* bottom arrow/triangle */ |
664 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
665 | }; |
666 | |
667 | int i; |
668 | for(i=0;i<4;i++) { |
669 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
670 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
671 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
672 | } |
673 | } |
674 | #endif |
675 | |
676 | #ifdef OSD_GPS_BUTTON |
677 | /* draw the satellite dish icon in the center of the dpad */ |
678 | #define GPS_V0 (D_RAD/7) |
679 | #define GPS_V1 (D_RAD/10) |
680 | #define GPS_V2 (D_RAD/5) |
681 | |
682 | /* draw a satellite receiver dish */ |
683 | /* this is either drawn in the center of the dpad (if present) */ |
684 | /* or in the middle of the zoom area */ |
685 | static void |
686 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
687 | /* move reference to dpad center */ |
688 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
689 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
690 | |
691 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
692 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
693 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
694 | cairo_close_path (cr); |
695 | |
696 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
697 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
698 | cairo_close_path (cr); |
699 | |
700 | x += GPS_V1; |
701 | cairo_move_to (cr, x, y-GPS_V2); |
702 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
703 | } |
704 | #endif |
705 | |
706 | #define Z_LEN (2*Z_RAD/3) |
707 | |
708 | static void |
709 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
710 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
711 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
712 | |
713 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
714 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
715 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
716 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
717 | } |
718 | |
719 | static void |
720 | osd_render(osm_gps_map_osd_t *osd) { |
721 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
722 | |
723 | #ifndef OSD_COLOR |
724 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
725 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
726 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
727 | #endif |
728 | |
729 | /* first fill with transparency */ |
730 | cairo_t *cr = cairo_create(priv->overlay); |
731 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
732 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
733 | cairo_paint(cr); |
734 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
735 | |
736 | /* --------- draw zoom and dpad shape shadow ----------- */ |
737 | #ifdef OSD_SHADOW_ENABLE |
738 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
739 | osd_shape_shadow(cr); |
740 | #ifndef OSD_NO_DPAD |
741 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
742 | osd_shape_shadow(cr); |
743 | #endif |
744 | #endif |
745 | |
746 | /* --------- draw zoom and dpad shape ----------- */ |
747 | |
748 | osd_zoom_shape(cr, 1, 1); |
749 | #ifndef OSD_COLOR |
750 | osd_shape(cr, &bg, &fg); |
751 | #else |
752 | osd_shape(cr); |
753 | #endif |
754 | #ifndef OSD_NO_DPAD |
755 | osd_dpad_shape(cr, 1, 1); |
756 | #ifndef OSD_COLOR |
757 | osd_shape(cr, &bg, &fg); |
758 | #else |
759 | osd_shape(cr); |
760 | #endif |
761 | #endif |
762 | |
763 | /* --------- draw zoom and dpad labels --------- */ |
764 | |
765 | #ifdef OSD_SHADOW_ENABLE |
766 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
767 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
768 | #ifndef OSD_NO_DPAD |
769 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
770 | #endif |
771 | cairo_stroke(cr); |
772 | #ifdef OSD_GPS_BUTTON |
773 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
774 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
775 | cairo_stroke(cr); |
776 | #endif |
777 | #endif |
778 | |
779 | #ifndef OSD_COLOR |
780 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
781 | #else |
782 | osd_labels(cr, Z_RAD/3, TRUE); |
783 | #endif |
784 | osd_zoom_labels(cr, 1, 1); |
785 | #ifndef OSD_NO_DPAD |
786 | osd_dpad_labels(cr, 1, 1); |
787 | #endif |
788 | cairo_stroke(cr); |
789 | |
790 | #ifndef OSD_COLOR |
791 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
792 | #else |
793 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
794 | #endif |
795 | #ifdef OSD_GPS_BUTTON |
796 | osd_dpad_gps(cr, 1, 1); |
797 | #endif |
798 | cairo_stroke(cr); |
799 | |
800 | cairo_destroy(cr); |
801 | |
802 | #ifdef OSD_SOURCE_SEL |
803 | osd_render_source_sel(osd); |
804 | #endif |
805 | } |
806 | |
807 | static void |
808 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
809 | { |
810 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
811 | |
812 | /* OSD itself uses some off-screen rendering, so check if the */ |
813 | /* offscreen buffer is present and create it if not */ |
814 | if(!priv->overlay) { |
815 | /* create overlay ... */ |
816 | priv->overlay = |
817 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
818 | |
819 | #ifdef OSD_SOURCE_SEL |
820 | /* the initial OSD state is alway not-expanded */ |
821 | priv->map_source = |
822 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
823 | OSD_S_W+2, OSD_S_H+2); |
824 | #endif |
825 | |
826 | /* ... and render it */ |
827 | osd_render(osd); |
828 | } |
829 | |
830 | // now draw this onto the original context |
831 | cairo_t *cr = gdk_cairo_create(drawable); |
832 | |
833 | int x = OSD_X, y = OSD_Y; |
834 | if(OSD_X < 0) |
835 | x = osd->widget->allocation.width - OSD_W + OSD_X; |
836 | |
837 | if(OSD_Y < 0) |
838 | y = osd->widget->allocation.height - OSD_H + OSD_Y; |
839 | |
840 | cairo_set_source_surface(cr, priv->overlay, x, y); |
841 | cairo_paint(cr); |
842 | |
843 | #ifdef OSD_SOURCE_SEL |
844 | if(!priv->handler_id) { |
845 | /* the OSD source selection is not being animated */ |
846 | if(!priv->expanded) |
847 | x = osd->widget->allocation.width - OSD_S_W; |
848 | else |
849 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
850 | } else |
851 | x = priv->shift; |
852 | |
853 | y = OSD_S_Y; |
854 | if(OSD_S_Y < 0) { |
855 | if(!priv->expanded) |
856 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
857 | else |
858 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
859 | } |
860 | |
861 | cairo_set_source_surface(cr, priv->map_source, x, y); |
862 | cairo_paint(cr); |
863 | #endif |
864 | |
865 | cairo_destroy(cr); |
866 | } |
867 | |
868 | static void |
869 | osd_free(osm_gps_map_osd_t *osd) |
870 | { |
871 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
872 | |
873 | if (priv->overlay) |
874 | cairo_surface_destroy(priv->overlay); |
875 | |
876 | #ifdef OSD_SOURCE_SEL |
877 | if(priv->handler_id) |
878 | gtk_timeout_remove(priv->handler_id); |
879 | |
880 | if (priv->map_source) |
881 | cairo_surface_destroy(priv->map_source); |
882 | #endif |
883 | |
884 | g_free(priv); |
885 | } |
886 | |
887 | static gboolean |
888 | osd_busy(osm_gps_map_osd_t *osd) |
889 | { |
890 | #ifdef OSD_SOURCE_SEL |
891 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
892 | return (priv->handler_id != 0); |
893 | #else |
894 | return FALSE; |
895 | #endif |
896 | } |
897 | |
898 | static osm_gps_map_osd_t osd_classic = { |
899 | .widget = NULL, |
900 | |
901 | .draw = osd_draw, |
902 | .check = osd_check, |
903 | .render = osd_render, |
904 | .free = osd_free, |
905 | .busy = osd_busy, |
906 | |
907 | .cb = NULL, |
908 | .data = NULL, |
909 | |
910 | .priv = NULL |
911 | }; |
912 | |
913 | /* this is the only function that's externally visible */ |
914 | void |
915 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
916 | { |
917 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
918 | |
919 | osd_classic.priv = priv; |
920 | |
921 | osm_gps_map_register_osd(map, &osd_classic); |
922 | } |
923 | |
924 | #ifdef OSD_GPS_BUTTON |
925 | /* below are osd specific functions which aren't used by osm-gps-map */ |
926 | /* but instead are to be used by the main application */ |
927 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
928 | gpointer data) { |
929 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
930 | g_return_if_fail (osd); |
931 | |
932 | osd->cb = cb; |
933 | osd->data = data; |
934 | |
935 | /* this may have changed the state of the gps button */ |
936 | /* we thus re-render the overlay */ |
937 | osd->render(osd); |
938 | |
939 | osm_gps_map_redraw(map); |
940 | } |
941 | #endif |
942 | |
943 | osd_button_t |
944 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
945 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
946 | g_return_val_if_fail (osd, OSD_NONE); |
947 | |
948 | return osd_check(osd, x, y); |
949 | } |