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OSD crosshair
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 | #define OSD_CROSSHAIR |
29 | |
30 | #ifndef USE_CAIRO |
31 | #error "OSD control display lacks a non-cairo implementation!" |
32 | #endif |
33 | |
34 | #include <cairo.h> |
35 | |
36 | #include "osm-gps-map.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 | cairo_surface_t *overlay; |
43 | |
44 | #ifdef OSD_SCALE |
45 | cairo_surface_t *scale; |
46 | int scale_zoom; |
47 | #endif |
48 | |
49 | #ifdef OSD_CROSSHAIR |
50 | cairo_surface_t *crosshair; |
51 | #endif |
52 | |
53 | #ifdef OSD_SOURCE_SEL |
54 | /* values to handle the "source" menu */ |
55 | cairo_surface_t *map_source; |
56 | gboolean expanded; |
57 | gint shift, dir, count; |
58 | gint handler_id; |
59 | gint width, height; |
60 | #endif |
61 | |
62 | } osd_priv_t; |
63 | |
64 | /* position and extent of bounding box */ |
65 | #ifndef OSD_X |
66 | #define OSD_X (10) |
67 | #endif |
68 | |
69 | #ifndef OSD_Y |
70 | #define OSD_Y (10) |
71 | #endif |
72 | |
73 | /* parameters of the direction shape */ |
74 | #ifndef OSD_DIAMETER |
75 | #define D_RAD (30) // diameter of dpad |
76 | #else |
77 | #define D_RAD (OSD_DIAMETER) |
78 | #endif |
79 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
80 | #define D_LEN (D_RAD/4) // length of arrow |
81 | #define D_WID (D_LEN) // width of arrow |
82 | |
83 | /* parameters of the "zoom" pad */ |
84 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
85 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
86 | |
87 | #ifdef OSD_SHADOW_ENABLE |
88 | /* shadow also depends on control size */ |
89 | #define OSD_SHADOW (D_RAD/6) |
90 | #else |
91 | #define OSD_SHADOW (0) |
92 | #endif |
93 | |
94 | /* normally the GPS button is in the center of the dpad. if there's */ |
95 | /* no dpad it will go into the zoom area */ |
96 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
97 | #define Z_GPS 1 |
98 | #else |
99 | #define Z_GPS 0 |
100 | #endif |
101 | |
102 | /* total width and height of controls incl. shadow */ |
103 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
104 | #if !Z_GPS |
105 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
106 | #else |
107 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
108 | #endif |
109 | |
110 | #ifdef OSD_SHADOW_ENABLE |
111 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
112 | #endif |
113 | |
114 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
115 | |
116 | #define Z_MID (Z_TOP + Z_RAD) |
117 | #define Z_BOT (Z_MID + Z_RAD) |
118 | #define Z_LEFT (Z_RAD) |
119 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
120 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
121 | |
122 | /* create the cairo shape used for the zoom buttons */ |
123 | static void |
124 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
125 | { |
126 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
127 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
128 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
129 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
130 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
131 | } |
132 | |
133 | /* ------------------- color/shadow functions ----------------- */ |
134 | |
135 | #ifndef OSD_COLOR |
136 | /* if no color has been specified we just use the gdks default colors */ |
137 | static void |
138 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
139 | GdkColor *fg, GdkColor *disabled) { |
140 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
141 | else gdk_cairo_set_source_color(cr, disabled); |
142 | cairo_set_line_width (cr, width); |
143 | } |
144 | #else |
145 | static void |
146 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
147 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
148 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
149 | cairo_set_line_width (cr, width); |
150 | } |
151 | #endif |
152 | |
153 | #ifdef OSD_SHADOW_ENABLE |
154 | static void |
155 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
156 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
157 | cairo_set_line_width (cr, width); |
158 | } |
159 | #endif |
160 | |
161 | #ifndef OSD_NO_DPAD |
162 | /* create the cairo shape used for the dpad */ |
163 | static void |
164 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
165 | { |
166 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
167 | } |
168 | #endif |
169 | |
170 | #ifdef OSD_SHADOW_ENABLE |
171 | static void |
172 | osd_shape_shadow(cairo_t *cr) { |
173 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
174 | cairo_fill (cr); |
175 | cairo_stroke (cr); |
176 | } |
177 | #endif |
178 | |
179 | #ifndef OSD_COLOR |
180 | /* if no color has been specified we just use the gdks default colors */ |
181 | static void |
182 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
183 | gdk_cairo_set_source_color(cr, bg); |
184 | cairo_fill_preserve (cr); |
185 | gdk_cairo_set_source_color(cr, fg); |
186 | cairo_set_line_width (cr, 1); |
187 | cairo_stroke (cr); |
188 | } |
189 | #else |
190 | static void |
191 | osd_shape(cairo_t *cr) { |
192 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
193 | cairo_fill_preserve (cr); |
194 | cairo_set_source_rgb (cr, OSD_COLOR); |
195 | cairo_set_line_width (cr, 1); |
196 | cairo_stroke (cr); |
197 | } |
198 | #endif |
199 | |
200 | |
201 | static gboolean |
202 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
203 | { |
204 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
205 | } |
206 | |
207 | #ifndef OSD_NO_DPAD |
208 | /* check whether x/y is within the dpad */ |
209 | static osd_button_t |
210 | osd_check_dpad(gint x, gint y) |
211 | { |
212 | /* within entire dpad circle */ |
213 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
214 | { |
215 | /* convert into position relative to dpads centre */ |
216 | x -= D_RAD; |
217 | y -= D_RAD; |
218 | |
219 | #ifdef OSD_GPS_BUTTON |
220 | /* check for dpad center goes here! */ |
221 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
222 | return OSD_GPS; |
223 | #endif |
224 | |
225 | if( y < 0 && abs(x) < abs(y)) |
226 | return OSD_UP; |
227 | |
228 | if( y > 0 && abs(x) < abs(y)) |
229 | return OSD_DOWN; |
230 | |
231 | if( x < 0 && abs(y) < abs(x)) |
232 | return OSD_LEFT; |
233 | |
234 | if( x > 0 && abs(y) < abs(x)) |
235 | return OSD_RIGHT; |
236 | |
237 | return OSD_BG; |
238 | } |
239 | return OSD_NONE; |
240 | } |
241 | #endif |
242 | |
243 | /* check whether x/y is within the zoom pads */ |
244 | static osd_button_t |
245 | osd_check_zoom(gint x, gint y) { |
246 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
247 | |
248 | /* within circle around (-) label */ |
249 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
250 | return OSD_OUT; |
251 | |
252 | /* within circle around (+) label */ |
253 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
254 | return OSD_IN; |
255 | |
256 | #if Z_GPS == 1 |
257 | /* within square around center */ |
258 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
259 | return OSD_GPS; |
260 | #endif |
261 | |
262 | /* between center of (-) button and center of entire zoom control area */ |
263 | if(x > OSD_LEFT && x < D_RAD) |
264 | return OSD_OUT; |
265 | |
266 | /* between center of (+) button and center of entire zoom control area */ |
267 | if(x < OSD_RIGHT && x > D_RAD) |
268 | return OSD_IN; |
269 | } |
270 | |
271 | return OSD_NONE; |
272 | } |
273 | |
274 | #ifdef OSD_SOURCE_SEL |
275 | |
276 | /* place source selection at right border */ |
277 | #define OSD_S_RAD (Z_RAD) |
278 | #define OSD_S_X (-OSD_X) |
279 | #define OSD_S_Y (OSD_Y) |
280 | #define OSD_S_PW (2 * Z_RAD) |
281 | #define OSD_S_W (OSD_S_PW) |
282 | #define OSD_S_PH (2 * Z_RAD) |
283 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
284 | |
285 | /* size of usable area when expanded */ |
286 | #define OSD_S_AREA_W (priv->width) |
287 | #define OSD_S_AREA_H (priv->height) |
288 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
289 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
290 | |
291 | /* internal value to draw the arrow on the "puller" */ |
292 | #define OSD_S_D0 (OSD_S_RAD/2) |
293 | #ifndef OSD_FONT_SIZE |
294 | #define OSD_FONT_SIZE 16.0 |
295 | #endif |
296 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
297 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
298 | |
299 | /* draw the shape of the source selection OSD, either only the puller (not expanded) */ |
300 | /* or the entire menu incl. the puller (expanded) */ |
301 | static void |
302 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
303 | if(!priv->expanded) { |
304 | /* just draw the puller */ |
305 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
306 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
307 | cairo_line_to (cr, x + OSD_S_PW, y); |
308 | } else { |
309 | /* draw the puller and the area itself */ |
310 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
311 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
312 | if(OSD_S_Y > 0) { |
313 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
314 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
315 | } else { |
316 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
317 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
318 | cairo_line_to (cr, x + OSD_S_PW, y); |
319 | } |
320 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
321 | cairo_close_path (cr); |
322 | } |
323 | } |
324 | |
325 | static void |
326 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
327 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
328 | |
329 | int py = offset + OSD_S_RAD - OSD_S_D0; |
330 | |
331 | if(!priv->expanded) { |
332 | /* draw the "puller" open (<) arrow */ |
333 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
334 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
335 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
336 | } else { |
337 | if(OSD_S_Y < 0) |
338 | py += OSD_S_AREA_H - OSD_S_PH; |
339 | |
340 | /* draw the "puller" close (>) arrow */ |
341 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
342 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
343 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
344 | cairo_stroke(cr); |
345 | |
346 | /* don't draw a shadow for the text content */ |
347 | if(offset == 1) { |
348 | gint source; |
349 | g_object_get(osd->widget, "map-source", &source, NULL); |
350 | |
351 | cairo_select_font_face (cr, "Sans", |
352 | CAIRO_FONT_SLANT_NORMAL, |
353 | CAIRO_FONT_WEIGHT_BOLD); |
354 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
355 | |
356 | int i, step = (priv->height - 2*OSD_TEXT_BORDER) / |
357 | OSM_GPS_MAP_SOURCE_LAST; |
358 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
359 | cairo_text_extents_t extents; |
360 | const char *src = osm_gps_map_source_get_friendly_name(i); |
361 | cairo_text_extents (cr, src, &extents); |
362 | |
363 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
364 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
365 | |
366 | /* draw filled rectangle if selected */ |
367 | if(source == i) { |
368 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
369 | y - OSD_TEXT_SKIP, |
370 | priv->width - OSD_TEXT_BORDER, |
371 | step + OSD_TEXT_SKIP); |
372 | cairo_fill(cr); |
373 | |
374 | /* temprarily draw with background color */ |
375 | #ifndef OSD_COLOR |
376 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
377 | gdk_cairo_set_source_color(cr, &bg); |
378 | #else |
379 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
380 | #endif |
381 | } |
382 | |
383 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
384 | cairo_show_text (cr, src); |
385 | |
386 | /* restore color */ |
387 | if(source == i) { |
388 | #ifndef OSD_COLOR |
389 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
390 | gdk_cairo_set_source_color(cr, &fg); |
391 | #else |
392 | cairo_set_source_rgb (cr, OSD_COLOR); |
393 | #endif |
394 | } |
395 | } |
396 | } |
397 | } |
398 | } |
399 | |
400 | static void |
401 | osd_render_source_sel(osm_gps_map_osd_t *osd) { |
402 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
403 | |
404 | #ifndef OSD_COLOR |
405 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
406 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
407 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
408 | #endif |
409 | |
410 | /* draw source selector */ |
411 | cairo_t *cr = cairo_create(priv->map_source); |
412 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
413 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
414 | cairo_paint(cr); |
415 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
416 | |
417 | #ifdef OSD_SHADOW_ENABLE |
418 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
419 | osd_shape_shadow(cr); |
420 | #endif |
421 | |
422 | osd_source_shape(priv, cr, 1, 1); |
423 | #ifndef OSD_COLOR |
424 | osd_shape(cr, &bg, &fg); |
425 | #else |
426 | osd_shape(cr); |
427 | #endif |
428 | |
429 | #ifdef OSD_SHADOW_ENABLE |
430 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
431 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
432 | cairo_stroke (cr); |
433 | #endif |
434 | #ifndef OSD_COLOR |
435 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
436 | #else |
437 | osd_labels(cr, Z_RAD/3, TRUE); |
438 | #endif |
439 | osd_source_content(osd, cr, 1); |
440 | cairo_stroke (cr); |
441 | |
442 | cairo_destroy(cr); |
443 | } |
444 | |
445 | /* re-allocate the buffer used to draw the menu. This is used */ |
446 | /* to collapse/expand the buffer */ |
447 | static void |
448 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
449 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
450 | |
451 | /* re-allocate offscreen bitmap */ |
452 | g_assert (priv->map_source); |
453 | |
454 | int w = OSD_S_W, h = OSD_S_H; |
455 | if(priv->expanded) { |
456 | cairo_text_extents_t extents; |
457 | |
458 | /* determine content size */ |
459 | cairo_t *cr = cairo_create(priv->map_source); |
460 | cairo_select_font_face (cr, "Sans", |
461 | CAIRO_FONT_SLANT_NORMAL, |
462 | CAIRO_FONT_WEIGHT_BOLD); |
463 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
464 | |
465 | /* calculate menu size */ |
466 | int i, max_h = 0, max_w = 0; |
467 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
468 | const char *src = osm_gps_map_source_get_friendly_name(i); |
469 | cairo_text_extents (cr, src, &extents); |
470 | |
471 | if(extents.width > max_w) max_w = extents.width; |
472 | if(extents.height > max_h) max_h = extents.height; |
473 | } |
474 | cairo_destroy(cr); |
475 | |
476 | priv->width = max_w + 2*OSD_TEXT_BORDER; |
477 | priv->height = OSM_GPS_MAP_SOURCE_LAST * |
478 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
479 | |
480 | w = OSD_S_EXP_W; |
481 | h = OSD_S_EXP_H; |
482 | } |
483 | |
484 | cairo_surface_destroy(priv->map_source); |
485 | priv->map_source = |
486 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
487 | |
488 | osd_render_source_sel(osd); |
489 | } |
490 | |
491 | #define OSD_HZ 15 |
492 | #define OSD_TIME 500 |
493 | |
494 | static gboolean osd_source_animate(gpointer data) { |
495 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
496 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
497 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
498 | gboolean done = FALSE; |
499 | priv->count += priv->dir; |
500 | |
501 | /* shifting in */ |
502 | if(priv->dir < 0) { |
503 | if(priv->count <= 0) { |
504 | priv->count = 0; |
505 | done = TRUE; |
506 | } |
507 | } else { |
508 | if(priv->count >= 1000) { |
509 | priv->expanded = FALSE; |
510 | osd_source_reallocate(osd); |
511 | |
512 | priv->count = 1000; |
513 | done = TRUE; |
514 | } |
515 | } |
516 | |
517 | |
518 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
519 | |
520 | /* nicer sinoid mapping */ |
521 | float m = 0.5-cos(priv->count * M_PI / 1000.0)/2; |
522 | priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
523 | m * diff; |
524 | |
525 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
526 | |
527 | if(done) |
528 | priv->handler_id = 0; |
529 | |
530 | return !done; |
531 | } |
532 | |
533 | /* switch between expand and collapse mode of source selection */ |
534 | static void |
535 | osd_source_toggle(osm_gps_map_osd_t *osd) |
536 | { |
537 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
538 | |
539 | /* ignore clicks while animation is running */ |
540 | if(priv->handler_id) |
541 | return; |
542 | |
543 | /* expand immediately, collapse is handle at the end of the collapse animation */ |
544 | if(!priv->expanded) { |
545 | priv->expanded = TRUE; |
546 | osd_source_reallocate(osd); |
547 | |
548 | priv->count = 1000; |
549 | priv->shift = osd->widget->allocation.width - OSD_S_W; |
550 | priv->dir = -1000/OSD_HZ; |
551 | } else { |
552 | priv->count = 0; |
553 | priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
554 | priv->dir = +1000/OSD_HZ; |
555 | } |
556 | |
557 | priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd); |
558 | } |
559 | |
560 | /* check if the user clicked inside the source selection area */ |
561 | static osd_button_t |
562 | osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
563 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
564 | |
565 | if(!priv->expanded) |
566 | x -= osd->widget->allocation.width - OSD_S_W; |
567 | else |
568 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
569 | |
570 | if(OSD_S_Y > 0) |
571 | y -= OSD_S_Y; |
572 | else |
573 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
574 | |
575 | /* within square around puller? */ |
576 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
577 | /* really within puller shape? */ |
578 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
579 | /* expand source selector */ |
580 | osd_source_toggle(osd); |
581 | |
582 | /* tell upper layers that user clicked some background element */ |
583 | /* of the OSD */ |
584 | return OSD_BG; |
585 | } |
586 | } |
587 | |
588 | /* check for clicks into data area */ |
589 | if(priv->expanded && !priv->handler_id) { |
590 | /* re-adjust from puller top to content top */ |
591 | if(OSD_S_Y < 0) |
592 | y += OSD_S_EXP_H - OSD_S_PH; |
593 | |
594 | if(x > OSD_S_PW && |
595 | x < OSD_S_PW + OSD_S_EXP_W && |
596 | y > 0 && |
597 | y < OSD_S_EXP_H) { |
598 | |
599 | int step = (priv->height - 2*OSD_TEXT_BORDER) |
600 | / OSM_GPS_MAP_SOURCE_LAST; |
601 | |
602 | y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP; |
603 | y /= step; |
604 | y += 1; |
605 | |
606 | gint old = 0; |
607 | g_object_get(osd->widget, "map-source", &old, NULL); |
608 | |
609 | if(y > OSM_GPS_MAP_SOURCE_NULL && |
610 | y <= OSM_GPS_MAP_SOURCE_LAST && |
611 | old != y) { |
612 | g_object_set(osd->widget, "map-source", y, NULL); |
613 | |
614 | osd_render_source_sel(osd); |
615 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
616 | } |
617 | |
618 | /* return "clicked in OSD background" to prevent further */ |
619 | /* processing by application */ |
620 | return OSD_BG; |
621 | } |
622 | } |
623 | |
624 | return OSD_NONE; |
625 | } |
626 | #endif // OSD_SOURCE_SEL |
627 | |
628 | static osd_button_t |
629 | osd_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
630 | osd_button_t but = OSD_NONE; |
631 | |
632 | #ifdef OSD_SOURCE_SEL |
633 | /* the source selection area is handles internally */ |
634 | but = osd_source_check(osd, x, y); |
635 | if(but != OSD_NONE) |
636 | return but; |
637 | #endif |
638 | |
639 | x -= OSD_X; |
640 | y -= OSD_Y; |
641 | |
642 | if(OSD_X < 0) |
643 | x -= (osd->widget->allocation.width - OSD_W); |
644 | |
645 | if(OSD_Y < 0) |
646 | y -= (osd->widget->allocation.height - OSD_H); |
647 | |
648 | /* first do a rough test for the OSD area. */ |
649 | /* this is just to avoid an unnecessary detailed test */ |
650 | if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) { |
651 | #ifndef OSD_NO_DPAD |
652 | but = osd_check_dpad(x, y); |
653 | #endif |
654 | |
655 | if(but == OSD_NONE) |
656 | but = osd_check_zoom(x, y); |
657 | } |
658 | |
659 | return but; |
660 | } |
661 | |
662 | #ifndef OSD_NO_DPAD |
663 | static void |
664 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
665 | /* move reference to dpad center */ |
666 | x += D_RAD; |
667 | y += D_RAD; |
668 | |
669 | const static gint offset[][3][2] = { |
670 | /* left arrow/triangle */ |
671 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
672 | /* right arrow/triangle */ |
673 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
674 | /* top arrow/triangle */ |
675 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
676 | /* bottom arrow/triangle */ |
677 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
678 | }; |
679 | |
680 | int i; |
681 | for(i=0;i<4;i++) { |
682 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
683 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
684 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
685 | } |
686 | } |
687 | #endif |
688 | |
689 | #ifdef OSD_GPS_BUTTON |
690 | /* draw the satellite dish icon in the center of the dpad */ |
691 | #define GPS_V0 (D_RAD/7) |
692 | #define GPS_V1 (D_RAD/10) |
693 | #define GPS_V2 (D_RAD/5) |
694 | |
695 | /* draw a satellite receiver dish */ |
696 | /* this is either drawn in the center of the dpad (if present) */ |
697 | /* or in the middle of the zoom area */ |
698 | static void |
699 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
700 | /* move reference to dpad center */ |
701 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
702 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
703 | |
704 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
705 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
706 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
707 | cairo_close_path (cr); |
708 | |
709 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
710 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
711 | cairo_close_path (cr); |
712 | |
713 | x += GPS_V1; |
714 | cairo_move_to (cr, x, y-GPS_V2); |
715 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
716 | } |
717 | #endif |
718 | |
719 | #define Z_LEN (2*Z_RAD/3) |
720 | |
721 | static void |
722 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
723 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
724 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
725 | |
726 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
727 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
728 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
729 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
730 | } |
731 | |
732 | #ifdef OSD_CROSSHAIR |
733 | |
734 | #ifndef OSD_CROSSHAIR_RADIUS |
735 | #define OSD_CROSSHAIR_RADIUS 20 |
736 | #endif |
737 | |
738 | #define OSD_CROSSHAIR_W (OSD_CROSSHAIR_RADIUS*2) |
739 | #define OSD_CROSSHAIR_H (OSD_CROSSHAIR_RADIUS*2) |
740 | |
741 | static void |
742 | osd_render_crosshair(osm_gps_map_osd_t *osd) |
743 | { |
744 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
745 | |
746 | /* first fill with transparency */ |
747 | cairo_t *cr = cairo_create(priv->crosshair); |
748 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
749 | // cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
750 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
751 | cairo_paint(cr); |
752 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
753 | |
754 | cairo_destroy(cr); |
755 | } |
756 | #endif |
757 | |
758 | #ifdef OSD_SCALE |
759 | |
760 | #ifndef OSD_SCALE_FONT_SIZE |
761 | #define OSD_SCALE_FONT_SIZE 12 |
762 | #endif |
763 | #define OSD_SCALE_W (10*OSD_SCALE_FONT_SIZE) |
764 | #define OSD_SCALE_H (5*OSD_SCALE_FONT_SIZE/2) |
765 | |
766 | /* various parameters used to create the scale */ |
767 | #define OSD_SCALE_H2 (OSD_SCALE_H/2) |
768 | #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3) |
769 | #define OSD_SCALE_M (OSD_SCALE_H2 - OSD_SCALE_TICK) |
770 | #define OSD_SCALE_I (OSD_SCALE_H2 + OSD_SCALE_TICK) |
771 | #define OSD_SCALE_FD (OSD_SCALE_FONT_SIZE/4) |
772 | |
773 | static void |
774 | osd_render_scale(osm_gps_map_osd_t *osd) |
775 | { |
776 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
777 | |
778 | /* this only needs to be rendered if the zoom has changed */ |
779 | gint zoom; |
780 | g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL); |
781 | if(zoom == priv->scale_zoom) |
782 | return; |
783 | |
784 | priv->scale_zoom = zoom; |
785 | |
786 | float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget)); |
787 | |
788 | /* first fill with transparency */ |
789 | cairo_t *cr = cairo_create(priv->scale); |
790 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
791 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
792 | // pink for testing: cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
793 | cairo_paint(cr); |
794 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
795 | |
796 | /* determine the size of the scale width in meters */ |
797 | float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix; |
798 | |
799 | /* scale this to useful values */ |
800 | int exp = logf(width)*M_LOG10E; |
801 | int mant = width/pow(10,exp); |
802 | int width_metric = mant * pow(10,exp); |
803 | char *dist_str = NULL; |
804 | if(width_metric<1000) |
805 | dist_str = g_strdup_printf("%u m", width_metric); |
806 | else |
807 | dist_str = g_strdup_printf("%u km", width_metric/1000); |
808 | width_metric /= m_per_pix; |
809 | |
810 | /* and now the hard part: scale for useful imperial values :-( */ |
811 | /* try to convert to feet, 1ft == 0.3048 m */ |
812 | width /= 0.3048; |
813 | float imp_scale = 0.3048; |
814 | char *dist_imp_unit = "ft"; |
815 | |
816 | if(width >= 100) { |
817 | /* 1yd == 3 feet */ |
818 | width /= 3.0; |
819 | imp_scale *= 3.0; |
820 | dist_imp_unit = "yd"; |
821 | |
822 | if(width >= 1760.0) { |
823 | /* 1mi == 1760 yd */ |
824 | width /= 1760.0; |
825 | imp_scale *= 1760.0; |
826 | dist_imp_unit = "mi"; |
827 | } |
828 | } |
829 | |
830 | /* also convert this to full tens/hundreds */ |
831 | exp = logf(width)*M_LOG10E; |
832 | mant = width/pow(10,exp); |
833 | int width_imp = mant * pow(10,exp); |
834 | char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit); |
835 | |
836 | /* convert back to pixels */ |
837 | width_imp *= imp_scale; |
838 | width_imp /= m_per_pix; |
839 | |
840 | cairo_select_font_face (cr, "Sans", |
841 | CAIRO_FONT_SLANT_NORMAL, |
842 | CAIRO_FONT_WEIGHT_BOLD); |
843 | cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE); |
844 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
845 | |
846 | cairo_text_extents_t extents; |
847 | cairo_text_extents (cr, dist_str, &extents); |
848 | |
849 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
850 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
851 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
852 | cairo_text_path (cr, dist_str); |
853 | cairo_stroke (cr); |
854 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
855 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
856 | cairo_text_path (cr, dist_str_imp); |
857 | cairo_stroke (cr); |
858 | |
859 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
860 | cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD); |
861 | cairo_show_text (cr, dist_str); |
862 | cairo_move_to (cr, 2*OSD_SCALE_FD, |
863 | OSD_SCALE_H2+OSD_SCALE_FD + extents.height); |
864 | cairo_show_text (cr, dist_str_imp); |
865 | |
866 | g_free(dist_str); |
867 | g_free(dist_str_imp); |
868 | |
869 | /* draw white line */ |
870 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
871 | cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); |
872 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3); |
873 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
874 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
875 | cairo_rel_line_to (cr, width_metric, 0); |
876 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
877 | cairo_stroke(cr); |
878 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
879 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
880 | cairo_rel_line_to (cr, width_imp, 0); |
881 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
882 | cairo_stroke(cr); |
883 | |
884 | /* draw black line */ |
885 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
886 | cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6); |
887 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M); |
888 | cairo_rel_line_to (cr, 0, OSD_SCALE_TICK); |
889 | cairo_rel_line_to (cr, width_metric, 0); |
890 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
891 | cairo_stroke(cr); |
892 | cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I); |
893 | cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK); |
894 | cairo_rel_line_to (cr, width_imp, 0); |
895 | cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK); |
896 | cairo_stroke(cr); |
897 | |
898 | cairo_destroy(cr); |
899 | } |
900 | #endif |
901 | |
902 | static void |
903 | osd_render(osm_gps_map_osd_t *osd) |
904 | { |
905 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
906 | |
907 | #ifndef OSD_COLOR |
908 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
909 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
910 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
911 | #endif |
912 | |
913 | /* first fill with transparency */ |
914 | cairo_t *cr = cairo_create(priv->overlay); |
915 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
916 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
917 | cairo_paint(cr); |
918 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
919 | |
920 | /* --------- draw zoom and dpad shape shadow ----------- */ |
921 | #ifdef OSD_SHADOW_ENABLE |
922 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
923 | osd_shape_shadow(cr); |
924 | #ifndef OSD_NO_DPAD |
925 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
926 | osd_shape_shadow(cr); |
927 | #endif |
928 | #endif |
929 | |
930 | /* --------- draw zoom and dpad shape ----------- */ |
931 | |
932 | osd_zoom_shape(cr, 1, 1); |
933 | #ifndef OSD_COLOR |
934 | osd_shape(cr, &bg, &fg); |
935 | #else |
936 | osd_shape(cr); |
937 | #endif |
938 | #ifndef OSD_NO_DPAD |
939 | osd_dpad_shape(cr, 1, 1); |
940 | #ifndef OSD_COLOR |
941 | osd_shape(cr, &bg, &fg); |
942 | #else |
943 | osd_shape(cr); |
944 | #endif |
945 | #endif |
946 | |
947 | /* --------- draw zoom and dpad labels --------- */ |
948 | |
949 | #ifdef OSD_SHADOW_ENABLE |
950 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
951 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
952 | #ifndef OSD_NO_DPAD |
953 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
954 | #endif |
955 | cairo_stroke(cr); |
956 | #ifdef OSD_GPS_BUTTON |
957 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
958 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
959 | cairo_stroke(cr); |
960 | #endif |
961 | #endif |
962 | |
963 | #ifndef OSD_COLOR |
964 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
965 | #else |
966 | osd_labels(cr, Z_RAD/3, TRUE); |
967 | #endif |
968 | osd_zoom_labels(cr, 1, 1); |
969 | #ifndef OSD_NO_DPAD |
970 | osd_dpad_labels(cr, 1, 1); |
971 | #endif |
972 | cairo_stroke(cr); |
973 | |
974 | #ifndef OSD_COLOR |
975 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
976 | #else |
977 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
978 | #endif |
979 | #ifdef OSD_GPS_BUTTON |
980 | osd_dpad_gps(cr, 1, 1); |
981 | #endif |
982 | cairo_stroke(cr); |
983 | |
984 | cairo_destroy(cr); |
985 | |
986 | #ifdef OSD_SOURCE_SEL |
987 | osd_render_source_sel(osd); |
988 | #endif |
989 | |
990 | #ifdef OSD_SCALE |
991 | osd_render_scale(osd); |
992 | #endif |
993 | |
994 | #ifdef OSD_CROSSHAIR |
995 | osd_render_crosshair(osd); |
996 | #endif |
997 | } |
998 | |
999 | static void |
1000 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
1001 | { |
1002 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
1003 | |
1004 | /* OSD itself uses some off-screen rendering, so check if the */ |
1005 | /* offscreen buffer is present and create it if not */ |
1006 | if(!priv->overlay) { |
1007 | /* create overlay ... */ |
1008 | priv->overlay = |
1009 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
1010 | |
1011 | #ifdef OSD_SOURCE_SEL |
1012 | /* the initial OSD state is alway not-expanded */ |
1013 | priv->map_source = |
1014 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1015 | OSD_S_W+2, OSD_S_H+2); |
1016 | #endif |
1017 | |
1018 | #ifdef OSD_SCALE |
1019 | priv->scale = |
1020 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1021 | OSD_SCALE_W, OSD_SCALE_H); |
1022 | priv->scale_zoom = -1; |
1023 | #endif |
1024 | |
1025 | #ifdef OSD_CROSSHAIR |
1026 | priv->crosshair = |
1027 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
1028 | OSD_CROSSHAIR_W, OSD_CROSSHAIR_H); |
1029 | #endif |
1030 | |
1031 | /* ... and render it */ |
1032 | osd_render(osd); |
1033 | } |
1034 | |
1035 | // now draw this onto the original context |
1036 | cairo_t *cr = gdk_cairo_create(drawable); |
1037 | |
1038 | int x = OSD_X, y = OSD_Y; |
1039 | if(OSD_X < 0) |
1040 | x = osd->widget->allocation.width - OSD_W + OSD_X; |
1041 | |
1042 | if(OSD_Y < 0) |
1043 | y = osd->widget->allocation.height - OSD_H + OSD_Y; |
1044 | |
1045 | cairo_set_source_surface(cr, priv->overlay, x, y); |
1046 | cairo_paint(cr); |
1047 | |
1048 | #ifdef OSD_SOURCE_SEL |
1049 | if(!priv->handler_id) { |
1050 | /* the OSD source selection is not being animated */ |
1051 | if(!priv->expanded) |
1052 | x = osd->widget->allocation.width - OSD_S_W; |
1053 | else |
1054 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
1055 | } else |
1056 | x = priv->shift; |
1057 | |
1058 | y = OSD_S_Y; |
1059 | if(OSD_S_Y < 0) { |
1060 | if(!priv->expanded) |
1061 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
1062 | else |
1063 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
1064 | } |
1065 | |
1066 | cairo_set_source_surface(cr, priv->map_source, x, y); |
1067 | cairo_paint(cr); |
1068 | #endif |
1069 | |
1070 | #ifdef OSD_SCALE |
1071 | x = OSD_X; |
1072 | y = -OSD_Y; |
1073 | if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W; |
1074 | if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H; |
1075 | |
1076 | cairo_set_source_surface(cr, priv->scale, x, y); |
1077 | cairo_paint(cr); |
1078 | #endif |
1079 | |
1080 | #ifdef OSD_CROSSHAIR |
1081 | x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2; |
1082 | y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2; |
1083 | |
1084 | cairo_set_source_surface(cr, priv->crosshair, x, y); |
1085 | cairo_paint(cr); |
1086 | #endif |
1087 | |
1088 | cairo_destroy(cr); |
1089 | } |
1090 | |
1091 | static void |
1092 | osd_free(osm_gps_map_osd_t *osd) |
1093 | { |
1094 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
1095 | |
1096 | if (priv->overlay) |
1097 | cairo_surface_destroy(priv->overlay); |
1098 | |
1099 | #ifdef OSD_SOURCE_SEL |
1100 | if(priv->handler_id) |
1101 | gtk_timeout_remove(priv->handler_id); |
1102 | |
1103 | if (priv->map_source) |
1104 | cairo_surface_destroy(priv->map_source); |
1105 | #endif |
1106 | |
1107 | #ifdef OSD_SCALE |
1108 | if (priv->scale) |
1109 | cairo_surface_destroy(priv->scale); |
1110 | #endif |
1111 | |
1112 | #ifdef OSD_CROSSHAIR |
1113 | if (priv->crosshair) |
1114 | cairo_surface_destroy(priv->crosshair); |
1115 | #endif |
1116 | |
1117 | g_free(priv); |
1118 | } |
1119 | |
1120 | static gboolean |
1121 | osd_busy(osm_gps_map_osd_t *osd) |
1122 | { |
1123 | #ifdef OSD_SOURCE_SEL |
1124 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
1125 | return (priv->handler_id != 0); |
1126 | #else |
1127 | return FALSE; |
1128 | #endif |
1129 | } |
1130 | |
1131 | static osm_gps_map_osd_t osd_classic = { |
1132 | .widget = NULL, |
1133 | |
1134 | .draw = osd_draw, |
1135 | .check = osd_check, |
1136 | .render = osd_render, |
1137 | .free = osd_free, |
1138 | .busy = osd_busy, |
1139 | |
1140 | .cb = NULL, |
1141 | .data = NULL, |
1142 | |
1143 | .priv = NULL |
1144 | }; |
1145 | |
1146 | /* this is the only function that's externally visible */ |
1147 | void |
1148 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
1149 | { |
1150 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
1151 | |
1152 | osd_classic.priv = priv; |
1153 | |
1154 | osm_gps_map_register_osd(map, &osd_classic); |
1155 | } |
1156 | |
1157 | #ifdef OSD_GPS_BUTTON |
1158 | /* below are osd specific functions which aren't used by osm-gps-map */ |
1159 | /* but instead are to be used by the main application */ |
1160 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
1161 | gpointer data) { |
1162 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1163 | g_return_if_fail (osd); |
1164 | |
1165 | osd->cb = cb; |
1166 | osd->data = data; |
1167 | |
1168 | /* this may have changed the state of the gps button */ |
1169 | /* we thus re-render the overlay */ |
1170 | osd->render(osd); |
1171 | |
1172 | osm_gps_map_redraw(map); |
1173 | } |
1174 | #endif |
1175 | |
1176 | osd_button_t |
1177 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
1178 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1179 | g_return_val_if_fail (osd, OSD_NONE); |
1180 | |
1181 | return osd_check(osd, x, y); |
1182 | } |