Parent Directory | Revision Log
OSD scale
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_SCALE |
29 | |
30 | #define OSD_SCALE_W 120 |
31 | #define OSD_SCALE_H 20 |
32 | |
33 | #ifndef USE_CAIRO |
34 | #error "OSD control display lacks a non-cairo implementation!" |
35 | #endif |
36 | |
37 | #include <cairo.h> |
38 | |
39 | #include "osm-gps-map.h" |
40 | #include "osm-gps-map-osd-classic.h" |
41 | |
42 | //the osd controls |
43 | typedef struct { |
44 | /* the offscreen representation of the OSD */ |
45 | cairo_surface_t *overlay; |
46 | |
47 | #ifdef OSD_SCALE |
48 | cairo_surface_t *scale; |
49 | #endif |
50 | |
51 | #ifdef OSD_SOURCE_SEL |
52 | /* values to handle the "source" menu */ |
53 | cairo_surface_t *map_source; |
54 | gboolean expanded; |
55 | gint shift, dir, count; |
56 | gint handler_id; |
57 | gint width, height; |
58 | #endif |
59 | |
60 | } osd_priv_t; |
61 | |
62 | /* position and extent of bounding box */ |
63 | #ifndef OSD_X |
64 | #define OSD_X (10) |
65 | #endif |
66 | |
67 | #ifndef OSD_Y |
68 | #define OSD_Y (10) |
69 | #endif |
70 | |
71 | /* parameters of the direction shape */ |
72 | #ifndef OSD_DIAMETER |
73 | #define D_RAD (30) // diameter of dpad |
74 | #else |
75 | #define D_RAD (OSD_DIAMETER) |
76 | #endif |
77 | #define D_TIP (4*D_RAD/5) // distance of arrow tip from dpad center |
78 | #define D_LEN (D_RAD/4) // length of arrow |
79 | #define D_WID (D_LEN) // width of arrow |
80 | |
81 | /* parameters of the "zoom" pad */ |
82 | #define Z_STEP (D_RAD/4) // distance between dpad and zoom |
83 | #define Z_RAD (D_RAD/2) // radius of "caps" of zoom bar |
84 | |
85 | #ifdef OSD_SHADOW_ENABLE |
86 | /* shadow also depends on control size */ |
87 | #define OSD_SHADOW (D_RAD/6) |
88 | #else |
89 | #define OSD_SHADOW (0) |
90 | #endif |
91 | |
92 | /* normally the GPS button is in the center of the dpad. if there's */ |
93 | /* no dpad it will go into the zoom area */ |
94 | #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD) |
95 | #define Z_GPS 1 |
96 | #else |
97 | #define Z_GPS 0 |
98 | #endif |
99 | |
100 | /* total width and height of controls incl. shadow */ |
101 | #define OSD_W (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD) |
102 | #if !Z_GPS |
103 | #define OSD_H (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW) |
104 | #else |
105 | #define OSD_H (2*Z_RAD + OSD_SHADOW) |
106 | #endif |
107 | |
108 | #ifdef OSD_SHADOW_ENABLE |
109 | #define OSD_LBL_SHADOW (OSD_SHADOW/2) |
110 | #endif |
111 | |
112 | #define Z_TOP ((1-Z_GPS) * (2 * D_RAD + Z_STEP)) |
113 | |
114 | #define Z_MID (Z_TOP + Z_RAD) |
115 | #define Z_BOT (Z_MID + Z_RAD) |
116 | #define Z_LEFT (Z_RAD) |
117 | #define Z_RIGHT (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD) |
118 | #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2) |
119 | |
120 | /* create the cairo shape used for the zoom buttons */ |
121 | static void |
122 | osd_zoom_shape(cairo_t *cr, gint x, gint y) |
123 | { |
124 | cairo_move_to (cr, x+Z_LEFT, y+Z_TOP); |
125 | cairo_line_to (cr, x+Z_RIGHT, y+Z_TOP); |
126 | cairo_arc (cr, x+Z_RIGHT, y+Z_MID, Z_RAD, -M_PI/2, M_PI/2); |
127 | cairo_line_to (cr, x+Z_LEFT, y+Z_BOT); |
128 | cairo_arc (cr, x+Z_LEFT, y+Z_MID, Z_RAD, M_PI/2, -M_PI/2); |
129 | } |
130 | |
131 | /* ------------------- color/shadow functions ----------------- */ |
132 | |
133 | #ifndef OSD_COLOR |
134 | /* if no color has been specified we just use the gdks default colors */ |
135 | static void |
136 | osd_labels(cairo_t *cr, gint width, gboolean enabled, |
137 | GdkColor *fg, GdkColor *disabled) { |
138 | if(enabled) gdk_cairo_set_source_color(cr, fg); |
139 | else gdk_cairo_set_source_color(cr, disabled); |
140 | cairo_set_line_width (cr, width); |
141 | } |
142 | #else |
143 | static void |
144 | osd_labels(cairo_t *cr, gint width, gboolean enabled) { |
145 | if(enabled) cairo_set_source_rgb (cr, OSD_COLOR); |
146 | else cairo_set_source_rgb (cr, OSD_COLOR_DISABLED); |
147 | cairo_set_line_width (cr, width); |
148 | } |
149 | #endif |
150 | |
151 | #ifdef OSD_SHADOW_ENABLE |
152 | static void |
153 | osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) { |
154 | cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15); |
155 | cairo_set_line_width (cr, width); |
156 | } |
157 | #endif |
158 | |
159 | #ifndef OSD_NO_DPAD |
160 | /* create the cairo shape used for the dpad */ |
161 | static void |
162 | osd_dpad_shape(cairo_t *cr, gint x, gint y) |
163 | { |
164 | cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI); |
165 | } |
166 | #endif |
167 | |
168 | #ifdef OSD_SHADOW_ENABLE |
169 | static void |
170 | osd_shape_shadow(cairo_t *cr) { |
171 | cairo_set_source_rgba (cr, 0, 0, 0, 0.2); |
172 | cairo_fill (cr); |
173 | cairo_stroke (cr); |
174 | } |
175 | #endif |
176 | |
177 | #ifndef OSD_COLOR |
178 | /* if no color has been specified we just use the gdks default colors */ |
179 | static void |
180 | osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) { |
181 | gdk_cairo_set_source_color(cr, bg); |
182 | cairo_fill_preserve (cr); |
183 | gdk_cairo_set_source_color(cr, fg); |
184 | cairo_set_line_width (cr, 1); |
185 | cairo_stroke (cr); |
186 | } |
187 | #else |
188 | static void |
189 | osd_shape(cairo_t *cr) { |
190 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
191 | cairo_fill_preserve (cr); |
192 | cairo_set_source_rgb (cr, OSD_COLOR); |
193 | cairo_set_line_width (cr, 1); |
194 | cairo_stroke (cr); |
195 | } |
196 | #endif |
197 | |
198 | |
199 | static gboolean |
200 | osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad) |
201 | { |
202 | return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad); |
203 | } |
204 | |
205 | #ifndef OSD_NO_DPAD |
206 | /* check whether x/y is within the dpad */ |
207 | static osd_button_t |
208 | osd_check_dpad(gint x, gint y) |
209 | { |
210 | /* within entire dpad circle */ |
211 | if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD)) |
212 | { |
213 | /* convert into position relative to dpads centre */ |
214 | x -= D_RAD; |
215 | y -= D_RAD; |
216 | |
217 | #ifdef OSD_GPS_BUTTON |
218 | /* check for dpad center goes here! */ |
219 | if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3)) |
220 | return OSD_GPS; |
221 | #endif |
222 | |
223 | if( y < 0 && abs(x) < abs(y)) |
224 | return OSD_UP; |
225 | |
226 | if( y > 0 && abs(x) < abs(y)) |
227 | return OSD_DOWN; |
228 | |
229 | if( x < 0 && abs(y) < abs(x)) |
230 | return OSD_LEFT; |
231 | |
232 | if( x > 0 && abs(y) < abs(x)) |
233 | return OSD_RIGHT; |
234 | |
235 | return OSD_BG; |
236 | } |
237 | return OSD_NONE; |
238 | } |
239 | #endif |
240 | |
241 | /* check whether x/y is within the zoom pads */ |
242 | static osd_button_t |
243 | osd_check_zoom(gint x, gint y) { |
244 | if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) { |
245 | |
246 | /* within circle around (-) label */ |
247 | if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD)) |
248 | return OSD_OUT; |
249 | |
250 | /* within circle around (+) label */ |
251 | if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD)) |
252 | return OSD_IN; |
253 | |
254 | #if Z_GPS == 1 |
255 | /* within square around center */ |
256 | if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD) |
257 | return OSD_GPS; |
258 | #endif |
259 | |
260 | /* between center of (-) button and center of entire zoom control area */ |
261 | if(x > OSD_LEFT && x < D_RAD) |
262 | return OSD_OUT; |
263 | |
264 | /* between center of (+) button and center of entire zoom control area */ |
265 | if(x < OSD_RIGHT && x > D_RAD) |
266 | return OSD_IN; |
267 | } |
268 | |
269 | return OSD_NONE; |
270 | } |
271 | |
272 | #ifdef OSD_SOURCE_SEL |
273 | |
274 | /* place source selection at right border */ |
275 | #define OSD_S_RAD (Z_RAD) |
276 | #define OSD_S_X (-OSD_X) |
277 | #define OSD_S_Y (OSD_Y) |
278 | #define OSD_S_PW (2 * Z_RAD) |
279 | #define OSD_S_W (OSD_S_PW) |
280 | #define OSD_S_PH (2 * Z_RAD) |
281 | #define OSD_S_H (OSD_S_PH + OSD_SHADOW) |
282 | |
283 | /* size of usable area when expanded */ |
284 | #define OSD_S_AREA_W (priv->width) |
285 | #define OSD_S_AREA_H (priv->height) |
286 | #define OSD_S_EXP_W (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW) |
287 | #define OSD_S_EXP_H (OSD_S_AREA_H + OSD_SHADOW) |
288 | |
289 | /* internal value to draw the arrow on the "puller" */ |
290 | #define OSD_S_D0 (OSD_S_RAD/2) |
291 | #ifndef OSD_FONT_SIZE |
292 | #define OSD_FONT_SIZE 16.0 |
293 | #endif |
294 | #define OSD_TEXT_BORDER (OSD_FONT_SIZE/2) |
295 | #define OSD_TEXT_SKIP (OSD_FONT_SIZE/8) |
296 | |
297 | /* draw the shape of the source selection OSD, either only the puller (not expanded) */ |
298 | /* or the entire menu incl. the puller (expanded) */ |
299 | static void |
300 | osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) { |
301 | if(!priv->expanded) { |
302 | /* just draw the puller */ |
303 | cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
304 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
305 | cairo_line_to (cr, x + OSD_S_PW, y); |
306 | } else { |
307 | /* draw the puller and the area itself */ |
308 | cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H); |
309 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H); |
310 | if(OSD_S_Y > 0) { |
311 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH); |
312 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
313 | } else { |
314 | cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2); |
315 | cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH); |
316 | cairo_line_to (cr, x + OSD_S_PW, y); |
317 | } |
318 | cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y); |
319 | cairo_close_path (cr); |
320 | } |
321 | } |
322 | |
323 | static void |
324 | osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) { |
325 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
326 | |
327 | int py = offset + OSD_S_RAD - OSD_S_D0; |
328 | |
329 | if(!priv->expanded) { |
330 | /* draw the "puller" open (<) arrow */ |
331 | cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py); |
332 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
333 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
334 | } else { |
335 | if(OSD_S_Y < 0) |
336 | py += OSD_S_AREA_H - OSD_S_PH; |
337 | |
338 | /* draw the "puller" close (>) arrow */ |
339 | cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py); |
340 | cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0); |
341 | cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0); |
342 | cairo_stroke(cr); |
343 | |
344 | /* don't draw a shadow for the text content */ |
345 | if(offset == 1) { |
346 | gint source; |
347 | g_object_get(osd->widget, "map-source", &source, NULL); |
348 | |
349 | cairo_select_font_face (cr, "Sans", |
350 | CAIRO_FONT_SLANT_NORMAL, |
351 | CAIRO_FONT_WEIGHT_BOLD); |
352 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
353 | |
354 | int i, step = (priv->height - 2*OSD_TEXT_BORDER) / |
355 | OSM_GPS_MAP_SOURCE_LAST; |
356 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
357 | cairo_text_extents_t extents; |
358 | const char *src = osm_gps_map_source_get_friendly_name(i); |
359 | cairo_text_extents (cr, src, &extents); |
360 | |
361 | int x = offset + OSD_S_PW + OSD_TEXT_BORDER; |
362 | int y = offset + step * (i-1) + OSD_TEXT_BORDER; |
363 | |
364 | /* draw filled rectangle if selected */ |
365 | if(source == i) { |
366 | cairo_rectangle(cr, x - OSD_TEXT_BORDER/2, |
367 | y - OSD_TEXT_SKIP, |
368 | priv->width - OSD_TEXT_BORDER, |
369 | step + OSD_TEXT_SKIP); |
370 | cairo_fill(cr); |
371 | |
372 | /* temprarily draw with background color */ |
373 | #ifndef OSD_COLOR |
374 | GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL]; |
375 | gdk_cairo_set_source_color(cr, &bg); |
376 | #else |
377 | cairo_set_source_rgb (cr, OSD_COLOR_BG); |
378 | #endif |
379 | } |
380 | |
381 | cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing); |
382 | cairo_show_text (cr, src); |
383 | |
384 | /* restore color */ |
385 | if(source == i) { |
386 | #ifndef OSD_COLOR |
387 | GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL]; |
388 | gdk_cairo_set_source_color(cr, &fg); |
389 | #else |
390 | cairo_set_source_rgb (cr, OSD_COLOR); |
391 | #endif |
392 | } |
393 | } |
394 | } |
395 | } |
396 | } |
397 | |
398 | static void |
399 | osd_render_source_sel(osm_gps_map_osd_t *osd) { |
400 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
401 | |
402 | #ifndef OSD_COLOR |
403 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
404 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
405 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
406 | #endif |
407 | |
408 | /* draw source selector */ |
409 | cairo_t *cr = cairo_create(priv->map_source); |
410 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
411 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
412 | cairo_paint(cr); |
413 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
414 | |
415 | #ifdef OSD_SHADOW_ENABLE |
416 | osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
417 | osd_shape_shadow(cr); |
418 | #endif |
419 | |
420 | osd_source_shape(priv, cr, 1, 1); |
421 | #ifndef OSD_COLOR |
422 | osd_shape(cr, &bg, &fg); |
423 | #else |
424 | osd_shape(cr); |
425 | #endif |
426 | |
427 | #ifdef OSD_SHADOW_ENABLE |
428 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
429 | osd_source_content(osd, cr, 1+OSD_LBL_SHADOW); |
430 | cairo_stroke (cr); |
431 | #endif |
432 | #ifndef OSD_COLOR |
433 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
434 | #else |
435 | osd_labels(cr, Z_RAD/3, TRUE); |
436 | #endif |
437 | osd_source_content(osd, cr, 1); |
438 | cairo_stroke (cr); |
439 | |
440 | cairo_destroy(cr); |
441 | } |
442 | |
443 | /* re-allocate the buffer used to draw the menu. This is used */ |
444 | /* to collapse/expand the buffer */ |
445 | static void |
446 | osd_source_reallocate(osm_gps_map_osd_t *osd) { |
447 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
448 | |
449 | /* re-allocate offscreen bitmap */ |
450 | g_assert (priv->map_source); |
451 | |
452 | int w = OSD_S_W, h = OSD_S_H; |
453 | if(priv->expanded) { |
454 | cairo_text_extents_t extents; |
455 | |
456 | /* determine content size */ |
457 | cairo_t *cr = cairo_create(priv->map_source); |
458 | cairo_select_font_face (cr, "Sans", |
459 | CAIRO_FONT_SLANT_NORMAL, |
460 | CAIRO_FONT_WEIGHT_BOLD); |
461 | cairo_set_font_size (cr, OSD_FONT_SIZE); |
462 | |
463 | /* calculate menu size */ |
464 | int i, max_h = 0, max_w = 0; |
465 | for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) { |
466 | const char *src = osm_gps_map_source_get_friendly_name(i); |
467 | cairo_text_extents (cr, src, &extents); |
468 | |
469 | if(extents.width > max_w) max_w = extents.width; |
470 | if(extents.height > max_h) max_h = extents.height; |
471 | } |
472 | cairo_destroy(cr); |
473 | |
474 | priv->width = max_w + 2*OSD_TEXT_BORDER; |
475 | priv->height = OSM_GPS_MAP_SOURCE_LAST * |
476 | (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER; |
477 | |
478 | w = OSD_S_EXP_W; |
479 | h = OSD_S_EXP_H; |
480 | } |
481 | |
482 | cairo_surface_destroy(priv->map_source); |
483 | priv->map_source = |
484 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
485 | |
486 | osd_render_source_sel(osd); |
487 | } |
488 | |
489 | #define OSD_HZ 15 |
490 | #define OSD_TIME 500 |
491 | |
492 | static gboolean osd_source_animate(gpointer data) { |
493 | osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data; |
494 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
495 | int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X; |
496 | gboolean done = FALSE; |
497 | priv->count += priv->dir; |
498 | |
499 | /* shifting in */ |
500 | if(priv->dir < 0) { |
501 | if(priv->count <= 0) { |
502 | priv->count = 0; |
503 | done = TRUE; |
504 | } |
505 | } else { |
506 | if(priv->count >= 1000) { |
507 | priv->expanded = FALSE; |
508 | osd_source_reallocate(osd); |
509 | |
510 | priv->count = 1000; |
511 | done = TRUE; |
512 | } |
513 | } |
514 | |
515 | |
516 | /* count runs linearly from 0 to 1000, map this nicely onto a position */ |
517 | |
518 | /* nicer sinoid mapping */ |
519 | float m = 0.5-cos(priv->count * M_PI / 1000.0)/2; |
520 | priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) + |
521 | m * diff; |
522 | |
523 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
524 | |
525 | if(done) |
526 | priv->handler_id = 0; |
527 | |
528 | return !done; |
529 | } |
530 | |
531 | /* switch between expand and collapse mode of source selection */ |
532 | static void |
533 | osd_source_toggle(osm_gps_map_osd_t *osd) |
534 | { |
535 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
536 | |
537 | /* ignore clicks while animation is running */ |
538 | if(priv->handler_id) |
539 | return; |
540 | |
541 | /* expand immediately, collapse is handle at the end of the collapse animation */ |
542 | if(!priv->expanded) { |
543 | priv->expanded = TRUE; |
544 | osd_source_reallocate(osd); |
545 | |
546 | priv->count = 1000; |
547 | priv->shift = osd->widget->allocation.width - OSD_S_W; |
548 | priv->dir = -1000/OSD_HZ; |
549 | } else { |
550 | priv->count = 0; |
551 | priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
552 | priv->dir = +1000/OSD_HZ; |
553 | } |
554 | |
555 | priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd); |
556 | } |
557 | |
558 | /* check if the user clicked inside the source selection area */ |
559 | static osd_button_t |
560 | osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
561 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
562 | |
563 | if(!priv->expanded) |
564 | x -= osd->widget->allocation.width - OSD_S_W; |
565 | else |
566 | x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
567 | |
568 | if(OSD_S_Y > 0) |
569 | y -= OSD_S_Y; |
570 | else |
571 | y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y; |
572 | |
573 | /* within square around puller? */ |
574 | if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) { |
575 | /* really within puller shape? */ |
576 | if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) { |
577 | /* expand source selector */ |
578 | osd_source_toggle(osd); |
579 | |
580 | /* tell upper layers that user clicked some background element */ |
581 | /* of the OSD */ |
582 | return OSD_BG; |
583 | } |
584 | } |
585 | |
586 | /* check for clicks into data area */ |
587 | if(priv->expanded && !priv->handler_id) { |
588 | /* re-adjust from puller top to content top */ |
589 | if(OSD_S_Y < 0) |
590 | y += OSD_S_EXP_H - OSD_S_PH; |
591 | |
592 | if(x > OSD_S_PW && |
593 | x < OSD_S_PW + OSD_S_EXP_W && |
594 | y > 0 && |
595 | y < OSD_S_EXP_H) { |
596 | |
597 | int step = (priv->height - 2*OSD_TEXT_BORDER) |
598 | / OSM_GPS_MAP_SOURCE_LAST; |
599 | |
600 | y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP; |
601 | y /= step; |
602 | y += 1; |
603 | |
604 | gint old = 0; |
605 | g_object_get(osd->widget, "map-source", &old, NULL); |
606 | |
607 | if(y > OSM_GPS_MAP_SOURCE_NULL && |
608 | y <= OSM_GPS_MAP_SOURCE_LAST && |
609 | old != y) { |
610 | g_object_set(osd->widget, "map-source", y, NULL); |
611 | |
612 | osd_render_source_sel(osd); |
613 | osm_gps_map_repaint(OSM_GPS_MAP(osd->widget)); |
614 | } |
615 | |
616 | /* return "clicked in OSD background" to prevent further */ |
617 | /* processing by application */ |
618 | return OSD_BG; |
619 | } |
620 | } |
621 | |
622 | return OSD_NONE; |
623 | } |
624 | #endif // OSD_SOURCE_SEL |
625 | |
626 | static osd_button_t |
627 | osd_check(osm_gps_map_osd_t *osd, gint x, gint y) { |
628 | osd_button_t but = OSD_NONE; |
629 | |
630 | #ifdef OSD_SOURCE_SEL |
631 | /* the source selection area is handles internally */ |
632 | but = osd_source_check(osd, x, y); |
633 | if(but != OSD_NONE) |
634 | return but; |
635 | #endif |
636 | |
637 | x -= OSD_X; |
638 | y -= OSD_Y; |
639 | |
640 | if(OSD_X < 0) |
641 | x -= (osd->widget->allocation.width - OSD_W); |
642 | |
643 | if(OSD_Y < 0) |
644 | y -= (osd->widget->allocation.height - OSD_H); |
645 | |
646 | /* first do a rough test for the OSD area. */ |
647 | /* this is just to avoid an unnecessary detailed test */ |
648 | if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) { |
649 | #ifndef OSD_NO_DPAD |
650 | but = osd_check_dpad(x, y); |
651 | #endif |
652 | |
653 | if(but == OSD_NONE) |
654 | but = osd_check_zoom(x, y); |
655 | } |
656 | |
657 | return but; |
658 | } |
659 | |
660 | #ifndef OSD_NO_DPAD |
661 | static void |
662 | osd_dpad_labels(cairo_t *cr, gint x, gint y) { |
663 | /* move reference to dpad center */ |
664 | x += D_RAD; |
665 | y += D_RAD; |
666 | |
667 | const static gint offset[][3][2] = { |
668 | /* left arrow/triangle */ |
669 | { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } }, |
670 | /* right arrow/triangle */ |
671 | { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } }, |
672 | /* top arrow/triangle */ |
673 | { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } }, |
674 | /* bottom arrow/triangle */ |
675 | { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } } |
676 | }; |
677 | |
678 | int i; |
679 | for(i=0;i<4;i++) { |
680 | cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]); |
681 | cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]); |
682 | cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]); |
683 | } |
684 | } |
685 | #endif |
686 | |
687 | #ifdef OSD_GPS_BUTTON |
688 | /* draw the satellite dish icon in the center of the dpad */ |
689 | #define GPS_V0 (D_RAD/7) |
690 | #define GPS_V1 (D_RAD/10) |
691 | #define GPS_V2 (D_RAD/5) |
692 | |
693 | /* draw a satellite receiver dish */ |
694 | /* this is either drawn in the center of the dpad (if present) */ |
695 | /* or in the middle of the zoom area */ |
696 | static void |
697 | osd_dpad_gps(cairo_t *cr, gint x, gint y) { |
698 | /* move reference to dpad center */ |
699 | x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3; |
700 | y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0; |
701 | |
702 | cairo_move_to (cr, x-GPS_V0, y+GPS_V0); |
703 | cairo_rel_line_to (cr, +GPS_V0, -GPS_V0); |
704 | cairo_rel_line_to (cr, +GPS_V0, +GPS_V0); |
705 | cairo_close_path (cr); |
706 | |
707 | cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2); |
708 | cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y); |
709 | cairo_close_path (cr); |
710 | |
711 | x += GPS_V1; |
712 | cairo_move_to (cr, x, y-GPS_V2); |
713 | cairo_rel_line_to (cr, +GPS_V1, -GPS_V1); |
714 | } |
715 | #endif |
716 | |
717 | #define Z_LEN (2*Z_RAD/3) |
718 | |
719 | static void |
720 | osd_zoom_labels(cairo_t *cr, gint x, gint y) { |
721 | cairo_move_to (cr, x + Z_LEFT - Z_LEN, y + Z_MID); |
722 | cairo_line_to (cr, x + Z_LEFT + Z_LEN, y + Z_MID); |
723 | |
724 | cairo_move_to (cr, x + Z_RIGHT, y + Z_MID - Z_LEN); |
725 | cairo_line_to (cr, x + Z_RIGHT, y + Z_MID + Z_LEN); |
726 | cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID); |
727 | cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
728 | } |
729 | |
730 | static char * |
731 | dist_str_metric(int dist) |
732 | { |
733 | if(dist<1000) |
734 | return g_strdup_printf("%u m", dist); |
735 | |
736 | return g_strdup_printf("%u km", dist/1000); |
737 | } |
738 | |
739 | static void |
740 | osd_render_scale(osm_gps_map_osd_t *osd) |
741 | { |
742 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
743 | float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget)); |
744 | |
745 | /* first fill with transparency */ |
746 | cairo_t *cr = cairo_create(priv->scale); |
747 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
748 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
749 | // cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
750 | cairo_paint(cr); |
751 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
752 | |
753 | /* determine the size of the scale width in meters */ |
754 | float width = (OSD_SCALE_W-2) * m_per_pix; |
755 | printf("width = %f meters\n", width); |
756 | |
757 | /* scale this to useful values */ |
758 | int exp = logf(width)*M_LOG10E; |
759 | int mant = width/pow(10,exp); |
760 | printf("mant = %d, exp = %d \n", mant, exp); |
761 | |
762 | int width_metric = mant * pow(10,exp); |
763 | char *dist_str = dist_str_metric(width_metric); |
764 | width_metric /= m_per_pix; |
765 | printf("metric scale width = %d pixels: %s\n", width_metric, dist_str); |
766 | |
767 | int font_size = 12; |
768 | |
769 | cairo_select_font_face (cr, "Sans", |
770 | CAIRO_FONT_SLANT_NORMAL, |
771 | CAIRO_FONT_WEIGHT_BOLD); |
772 | cairo_set_font_size (cr, font_size); |
773 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
774 | |
775 | cairo_text_extents_t extents; |
776 | cairo_text_extents (cr, dist_str, &extents); |
777 | |
778 | cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
779 | cairo_move_to (cr, font_size/3, font_size); |
780 | cairo_text_path (cr, dist_str); |
781 | cairo_set_line_width (cr, 2); |
782 | cairo_stroke (cr); |
783 | |
784 | cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
785 | cairo_move_to (cr, font_size/3, font_size); |
786 | cairo_show_text (cr, dist_str); |
787 | |
788 | /* draw white line */ |
789 | cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
790 | cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); |
791 | cairo_set_line_width (cr, 4); |
792 | cairo_move_to (cr, 2, 2*font_size/3); |
793 | cairo_rel_line_to (cr, 0, 2*font_size/3); |
794 | cairo_rel_line_to (cr, width_metric, 0); |
795 | cairo_rel_line_to (cr, 0, -2*font_size/3); |
796 | cairo_stroke(cr); |
797 | |
798 | /* draw black line */ |
799 | cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
800 | cairo_set_line_width (cr, 2); |
801 | cairo_move_to (cr, 2, 2*font_size/3); |
802 | cairo_rel_line_to (cr, 0, 2*font_size/3); |
803 | cairo_rel_line_to (cr, width_metric, 0); |
804 | cairo_rel_line_to (cr, 0, -2*font_size/3); |
805 | cairo_stroke(cr); |
806 | |
807 | /* xyz */ |
808 | |
809 | cairo_destroy(cr); |
810 | } |
811 | |
812 | static void |
813 | osd_render(osm_gps_map_osd_t *osd) |
814 | { |
815 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
816 | |
817 | #ifndef OSD_COLOR |
818 | GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL]; |
819 | GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL]; |
820 | GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE]; |
821 | #endif |
822 | |
823 | /* first fill with transparency */ |
824 | cairo_t *cr = cairo_create(priv->overlay); |
825 | cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
826 | cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
827 | cairo_paint(cr); |
828 | cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
829 | |
830 | /* --------- draw zoom and dpad shape shadow ----------- */ |
831 | #ifdef OSD_SHADOW_ENABLE |
832 | osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
833 | osd_shape_shadow(cr); |
834 | #ifndef OSD_NO_DPAD |
835 | osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW); |
836 | osd_shape_shadow(cr); |
837 | #endif |
838 | #endif |
839 | |
840 | /* --------- draw zoom and dpad shape ----------- */ |
841 | |
842 | osd_zoom_shape(cr, 1, 1); |
843 | #ifndef OSD_COLOR |
844 | osd_shape(cr, &bg, &fg); |
845 | #else |
846 | osd_shape(cr); |
847 | #endif |
848 | #ifndef OSD_NO_DPAD |
849 | osd_dpad_shape(cr, 1, 1); |
850 | #ifndef OSD_COLOR |
851 | osd_shape(cr, &bg, &fg); |
852 | #else |
853 | osd_shape(cr); |
854 | #endif |
855 | #endif |
856 | |
857 | /* --------- draw zoom and dpad labels --------- */ |
858 | |
859 | #ifdef OSD_SHADOW_ENABLE |
860 | osd_labels_shadow(cr, Z_RAD/3, TRUE); |
861 | osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
862 | #ifndef OSD_NO_DPAD |
863 | osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
864 | #endif |
865 | cairo_stroke(cr); |
866 | #ifdef OSD_GPS_BUTTON |
867 | osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL); |
868 | osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW); |
869 | cairo_stroke(cr); |
870 | #endif |
871 | #endif |
872 | |
873 | #ifndef OSD_COLOR |
874 | osd_labels(cr, Z_RAD/3, TRUE, &fg, &da); |
875 | #else |
876 | osd_labels(cr, Z_RAD/3, TRUE); |
877 | #endif |
878 | osd_zoom_labels(cr, 1, 1); |
879 | #ifndef OSD_NO_DPAD |
880 | osd_dpad_labels(cr, 1, 1); |
881 | #endif |
882 | cairo_stroke(cr); |
883 | |
884 | #ifndef OSD_COLOR |
885 | osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da); |
886 | #else |
887 | osd_labels(cr, Z_RAD/6, osd->cb != NULL); |
888 | #endif |
889 | #ifdef OSD_GPS_BUTTON |
890 | osd_dpad_gps(cr, 1, 1); |
891 | #endif |
892 | cairo_stroke(cr); |
893 | |
894 | cairo_destroy(cr); |
895 | |
896 | #ifdef OSD_SOURCE_SEL |
897 | osd_render_source_sel(osd); |
898 | #endif |
899 | |
900 | #ifdef OSD_SCALE |
901 | osd_render_scale(osd); |
902 | #endif |
903 | } |
904 | |
905 | static void |
906 | osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable) |
907 | { |
908 | osd_priv_t *priv = (osd_priv_t*)osd->priv; |
909 | |
910 | /* OSD itself uses some off-screen rendering, so check if the */ |
911 | /* offscreen buffer is present and create it if not */ |
912 | if(!priv->overlay) { |
913 | /* create overlay ... */ |
914 | priv->overlay = |
915 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2); |
916 | |
917 | #ifdef OSD_SOURCE_SEL |
918 | /* the initial OSD state is alway not-expanded */ |
919 | priv->map_source = |
920 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
921 | OSD_S_W+2, OSD_S_H+2); |
922 | #endif |
923 | |
924 | #ifdef OSD_SCALE |
925 | priv->scale = |
926 | cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
927 | OSD_SCALE_W+2, OSD_SCALE_H+2); |
928 | #endif |
929 | |
930 | /* ... and render it */ |
931 | osd_render(osd); |
932 | } |
933 | |
934 | // now draw this onto the original context |
935 | cairo_t *cr = gdk_cairo_create(drawable); |
936 | |
937 | int x = OSD_X, y = OSD_Y; |
938 | if(OSD_X < 0) |
939 | x = osd->widget->allocation.width - OSD_W + OSD_X; |
940 | |
941 | if(OSD_Y < 0) |
942 | y = osd->widget->allocation.height - OSD_H + OSD_Y; |
943 | |
944 | cairo_set_source_surface(cr, priv->overlay, x, y); |
945 | cairo_paint(cr); |
946 | |
947 | #ifdef OSD_SOURCE_SEL |
948 | if(!priv->handler_id) { |
949 | /* the OSD source selection is not being animated */ |
950 | if(!priv->expanded) |
951 | x = osd->widget->allocation.width - OSD_S_W; |
952 | else |
953 | x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X; |
954 | } else |
955 | x = priv->shift; |
956 | |
957 | y = OSD_S_Y; |
958 | if(OSD_S_Y < 0) { |
959 | if(!priv->expanded) |
960 | y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y; |
961 | else |
962 | y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y; |
963 | } |
964 | |
965 | cairo_set_source_surface(cr, priv->map_source, x, y); |
966 | cairo_paint(cr); |
967 | #endif |
968 | |
969 | #ifdef OSD_SCALE |
970 | x = OSD_X; |
971 | y = -OSD_Y; |
972 | if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W; |
973 | if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H; |
974 | |
975 | cairo_set_source_surface(cr, priv->scale, x, y); |
976 | cairo_paint(cr); |
977 | #endif |
978 | |
979 | cairo_destroy(cr); |
980 | } |
981 | |
982 | static void |
983 | osd_free(osm_gps_map_osd_t *osd) |
984 | { |
985 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
986 | |
987 | if (priv->overlay) |
988 | cairo_surface_destroy(priv->overlay); |
989 | |
990 | #ifdef OSD_SOURCE_SEL |
991 | if(priv->handler_id) |
992 | gtk_timeout_remove(priv->handler_id); |
993 | |
994 | if (priv->map_source) |
995 | cairo_surface_destroy(priv->map_source); |
996 | #endif |
997 | |
998 | #ifdef OSD_SCALE |
999 | if (priv->scale) |
1000 | cairo_surface_destroy(priv->scale); |
1001 | #endif |
1002 | |
1003 | g_free(priv); |
1004 | } |
1005 | |
1006 | static gboolean |
1007 | osd_busy(osm_gps_map_osd_t *osd) |
1008 | { |
1009 | #ifdef OSD_SOURCE_SEL |
1010 | osd_priv_t *priv = (osd_priv_t *)(osd->priv); |
1011 | return (priv->handler_id != 0); |
1012 | #else |
1013 | return FALSE; |
1014 | #endif |
1015 | } |
1016 | |
1017 | static osm_gps_map_osd_t osd_classic = { |
1018 | .widget = NULL, |
1019 | |
1020 | .draw = osd_draw, |
1021 | .check = osd_check, |
1022 | .render = osd_render, |
1023 | .free = osd_free, |
1024 | .busy = osd_busy, |
1025 | |
1026 | .cb = NULL, |
1027 | .data = NULL, |
1028 | |
1029 | .priv = NULL |
1030 | }; |
1031 | |
1032 | /* this is the only function that's externally visible */ |
1033 | void |
1034 | osm_gps_map_osd_classic_init(OsmGpsMap *map) |
1035 | { |
1036 | osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1); |
1037 | |
1038 | osd_classic.priv = priv; |
1039 | |
1040 | osm_gps_map_register_osd(map, &osd_classic); |
1041 | } |
1042 | |
1043 | #ifdef OSD_GPS_BUTTON |
1044 | /* below are osd specific functions which aren't used by osm-gps-map */ |
1045 | /* but instead are to be used by the main application */ |
1046 | void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, |
1047 | gpointer data) { |
1048 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1049 | g_return_if_fail (osd); |
1050 | |
1051 | osd->cb = cb; |
1052 | osd->data = data; |
1053 | |
1054 | /* this may have changed the state of the gps button */ |
1055 | /* we thus re-render the overlay */ |
1056 | osd->render(osd); |
1057 | |
1058 | osm_gps_map_redraw(map); |
1059 | } |
1060 | #endif |
1061 | |
1062 | osd_button_t |
1063 | osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) { |
1064 | osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map); |
1065 | g_return_val_if_fail (osd, OSD_NONE); |
1066 | |
1067 | return osd_check(osd, x, y); |
1068 | } |