Diff of /trunk/src/osm-gps-map-osd-classic.c

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revision 73 by harbaum, Sun Aug 23 19:38:15 2009 UTC revision 136 by harbaum, Mon Oct 19 13:02:41 2009 UTC
# Line 19  Line 19 
19    
20  #include "config.h"  #include "config.h"
21  #include <stdlib.h>  // abs  #include <stdlib.h>  // abs
22  #include <math.h>    // M_PI  #include <string.h>
23    #include <math.h>    // M_PI/cos()
24    
25  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
26  /* OSM_GPS_MAP_OSD_DIAMETER */  /* OSD_DIAMETER */
27    /* OSD_X, OSD_Y */
28    
29  #ifndef USE_CAIRO  #ifndef USE_CAIRO
30  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
# Line 31  Line 33 
33  #include <cairo.h>  #include <cairo.h>
34    
35  #include "osm-gps-map.h"  #include "osm-gps-map.h"
36    #include "converter.h"
37  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
38    
39  //the osd controls  //the osd controls
40  typedef struct {  typedef struct {
41      GdkPixmap *backup;      /* the offscreen representation of the OSD */
42      gint backup_x, backup_y;      struct {
43      cairo_surface_t *overlay;          cairo_surface_t *surface;
44            gboolean rendered;
45    #ifdef OSD_GPS_BUTTON
46            gboolean gps_enabled;
47    #endif
48        } controls;
49    
50    #ifdef OSD_BALLOON
51        //a balloon with additional info
52        struct {
53            cairo_surface_t *surface;
54            int orientation, offset_x, offset_y;
55    
56            gboolean just_created;
57            float lat, lon;
58            OsmGpsMapRect_t rect;
59    
60            /* function called to have the user app draw the contents */
61            OsmGpsMapBalloonCallback cb;
62            gpointer data;
63        } balloon;
64    #endif
65    
66    #ifdef OSD_SCALE
67        struct {
68            cairo_surface_t *surface;
69            int zoom;
70        } scale;
71    #endif
72    
73    #ifdef OSD_CROSSHAIR
74        struct {
75            cairo_surface_t *surface;
76            gboolean rendered;
77        } crosshair;
78    #endif
79    
80    #ifdef OSD_NAV
81        struct {
82            cairo_surface_t *surface;
83            float lat, lon;
84            char *name;
85            gboolean imperial;    // display distance imperial/metric
86        } nav;
87    #endif
88    
89    #ifdef OSD_COORDINATES
90        struct {
91            cairo_surface_t *surface;
92            float lat, lon;
93        } coordinates;
94    #endif
95    
96    #ifdef OSD_SOURCE_SEL
97        struct {
98            /* values to handle the "source" menu */
99            cairo_surface_t *surface;
100            gboolean expanded;
101            gint shift, dir, count;
102            gint handler_id;
103            gint width, height;
104            gboolean rendered;
105        } source_sel;
106    #endif
107    
108  } osd_priv_t;  } osd_priv_t;
109    
110    #ifdef OSD_BALLOON
111    /* most visual effects are hardcoded by now, but may be made */
112    /* available via properties later */
113    #ifndef BALLOON_AREA_WIDTH
114    #define BALLOON_AREA_WIDTH           290
115    #endif
116    #ifndef BALLOON_AREA_HEIGHT
117    #define BALLOON_AREA_HEIGHT           75
118    #endif
119    #ifndef BALLOON_CORNER_RADIUS
120    #define BALLOON_CORNER_RADIUS         10
121    #endif
122    
123    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
124    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
125    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
126    #define BALLOON_TRANSPARENCY         0.8
127    #define POINTER_HEIGHT                20
128    #define POINTER_FOOT_WIDTH            20
129    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
130    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
131    #define BALLOON_SHADOW_TRANSPARENCY  0.2
132    
133    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
134    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
135    
136    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
137    
138    
139    /* draw the bubble shape. this is used twice, once for the shape and once */
140    /* for the shadow */
141    static void
142    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
143           gboolean bottom, int px, int py, int px0, int px1) {
144    
145        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
146        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
147                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
148        if(!bottom) {
149            /* insert top pointer */
150            cairo_line_to (cr, px1, y0);
151            cairo_line_to (cr, px, py);
152            cairo_line_to (cr, px0, y0);
153        }
154    
155        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
156        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
157                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
158        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
159        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
160                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
161        if(bottom) {
162            /* insert bottom pointer */
163            cairo_line_to (cr, px0, y1);
164            cairo_line_to (cr, px, py);
165            cairo_line_to (cr, px1, y1);
166        }
167    
168        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
169        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
170                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
171    
172        cairo_close_path (cr);
173    }
174    
175    static void
176    osd_render_balloon(osm_gps_map_osd_t *osd) {
177        osd_priv_t *priv = (osd_priv_t*)osd->priv;
178    
179        /* get zoom */
180        gint zoom;
181        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
182    
183        /* ------- convert given coordinate into screen position --------- */
184        gint xs, ys;
185        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
186                                          priv->balloon.lat, priv->balloon.lon,
187                                          &xs, &ys);
188    
189        gint x0 = 1, y0 = 1;
190    
191        /* check position of this relative to screen center to determine */
192        /* pointer direction ... */
193        int pointer_x, pointer_x0, pointer_x1;
194        int pointer_y;
195    
196        /* ... and calculate position */
197        int orientation = 0;
198        if(xs > osd->widget->allocation.width/2) {
199            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
200            pointer_x = x0 - priv->balloon.offset_x;
201            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
202            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
203            orientation |= 1;
204        } else {
205            priv->balloon.offset_x = -POINTER_OFFSET;
206            pointer_x = x0 - priv->balloon.offset_x;
207            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
208            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
209        }
210    
211        gboolean bottom = FALSE;
212        if(ys > osd->widget->allocation.height/2) {
213            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
214            pointer_y = y0 - priv->balloon.offset_y;
215            bottom = TRUE;
216            orientation |= 2;
217        } else {
218            priv->balloon.offset_y = 0;
219            pointer_y = y0 - priv->balloon.offset_y;
220            y0 += POINTER_HEIGHT;
221        }
222    
223        /* if required orientation equals current one, then don't render */
224        /* anything */
225        if(orientation == priv->balloon.orientation)
226            return;
227    
228        priv->balloon.orientation = orientation;
229    
230        /* calculate bottom/right of box */
231        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
232    
233        /* save balloon screen coordinates for later use */
234        priv->balloon.rect.x = x0 + BALLOON_BORDER;
235        priv->balloon.rect.y = y0 + BALLOON_BORDER;
236        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
237        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
238    
239        cairo_t *cr = cairo_create(priv->balloon.surface);
240        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
241        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
242        cairo_paint(cr);
243        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
244    
245        /* --------- draw shadow --------------- */
246        osm_gps_map_draw_balloon_shape (cr,
247                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
248                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
249                     bottom, pointer_x, pointer_y,
250                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
251    
252        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
253        cairo_fill_preserve (cr);
254        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
255        cairo_set_line_width (cr, 0);
256        cairo_stroke (cr);
257    
258        /* --------- draw main shape ----------- */
259        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
260                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
261    
262        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
263        cairo_fill_preserve (cr);
264        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
265        cairo_set_line_width (cr, 1);
266        cairo_stroke (cr);
267    
268        if (priv->balloon.cb) {
269            osm_gps_map_balloon_event_t event;
270    
271            /* clip in case application tries to draw in */
272                /* exceed of the balloon */
273            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
274                             priv->balloon.rect.w, priv->balloon.rect.h);
275            cairo_clip (cr);
276            cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
277    
278            /* request the application to draw the balloon contents */
279            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
280            event.data.draw.rect = &priv->balloon.rect;
281            event.data.draw.cr = cr;
282    
283            priv->balloon.cb(&event, priv->balloon.data);
284        }
285    
286        cairo_destroy(cr);
287    }
288    
289    /* return true if balloon is being displayed and if */
290    /* the given coordinate is within this balloon */
291    static gboolean
292    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y)
293    {
294        osd_priv_t *priv = (osd_priv_t*)osd->priv;
295    
296        if(!priv->balloon.surface)
297            return FALSE;
298    
299        gint xs, ys;
300        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
301                                          priv->balloon.lat, priv->balloon.lon,
302                                          &xs, &ys);
303    
304        xs += priv->balloon.rect.x + priv->balloon.offset_x;
305        ys += priv->balloon.rect.y + priv->balloon.offset_y;
306    
307        gboolean is_in =
308            (x > xs) && (x < xs + priv->balloon.rect.w) &&
309            (y > ys) && (y < ys + priv->balloon.rect.h);
310    
311        /* is this a real click or is the application just checking for something? */
312        if(click) {
313    
314            /* handle the fact that the balloon may have been created by the */
315            /* button down event */
316            if(!is_in && !down && !priv->balloon.just_created) {
317                /* the user actually clicked outside the balloon */
318    
319                /* close the balloon! */
320                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
321    
322                /* and inform application about this */
323                if(priv->balloon.cb) {
324                    osm_gps_map_balloon_event_t event;
325                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
326                    priv->balloon.cb(&event, priv->balloon.data);
327                }
328    
329            }
330    
331            if(is_in && priv->balloon.cb) {
332                osm_gps_map_balloon_event_t event;
333    
334                /* notify application of click */
335                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
336                event.data.click.x = x - xs;
337                event.data.click.y = y - ys;
338                event.data.click.down = down;
339    
340                priv->balloon.cb(&event, priv->balloon.data);
341            }
342        }
343    
344        return is_in;
345    }
346    
347    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
348        g_return_if_fail (OSM_IS_GPS_MAP (map));
349    
350        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
351        g_return_if_fail (osd);
352    
353        osd_priv_t *priv = (osd_priv_t*)osd->priv;
354        g_return_if_fail (priv);
355    
356        if(priv->balloon.surface) {
357            cairo_surface_destroy(priv->balloon.surface);
358            priv->balloon.surface = NULL;
359            priv->balloon.lat = OSM_GPS_MAP_INVALID;
360            priv->balloon.lon = OSM_GPS_MAP_INVALID;
361        }
362        osm_gps_map_redraw(map);
363    }
364    
365    void
366    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
367                                  OsmGpsMapBalloonCallback cb, gpointer data) {
368        g_return_if_fail (OSM_IS_GPS_MAP (map));
369    
370        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
371        g_return_if_fail (osd);
372    
373        osd_priv_t *priv = (osd_priv_t*)osd->priv;
374        g_return_if_fail (priv);
375    
376        osm_gps_map_osd_clear_balloon (map);
377    
378        /* allocate balloon surface */
379        priv->balloon.surface =
380            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
381                                       BALLOON_W+2, BALLOON_H+2);
382    
383        priv->balloon.lat = latitude;
384        priv->balloon.lon = longitude;
385        priv->balloon.cb = cb;
386        priv->balloon.data = data;
387        priv->balloon.just_created = TRUE;
388    
389        priv->balloon.orientation = -1;
390    
391        osd_render_balloon(osd);
392    
393        osm_gps_map_redraw(map);
394    }
395    
396    #endif // OSD_BALLOON
397    
398  /* position and extent of bounding box */  /* position and extent of bounding box */
399    #ifndef OSD_X
400  #define OSD_X      (10)  #define OSD_X      (10)
401  #define OSD_Y      (10)  #endif
402    
403  #define OSD_COLOR            0.5, 0.5, 1  #ifndef OSD_Y
404  #define OSD_COLOR_DISABLED   0.8, 0.8, 0.8  #define OSD_Y      (10)
405    #endif
406    
407  /* parameters of the direction shape */  /* parameters of the direction shape */
408  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
409  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
410  #else  #else
411  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
412  #endif  #endif
413  #define D_TIP  (4*D_RAD/5)  // distance of arrow tip from dpad center  #define D_TIP  (4*D_RAD/5)  // distance of arrow tip from dpad center
414  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 61  typedef struct { Line 418  typedef struct {
418  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom
419  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar
420    
421    #ifdef OSD_SHADOW_ENABLE
422  /* shadow also depends on control size */  /* shadow also depends on control size */
423  #define OSD_SHADOW (D_RAD/6)  #define OSD_SHADOW (D_RAD/6)
424    #else
425    #define OSD_SHADOW (0)
426    #endif
427    
428    /* normally the GPS button is in the center of the dpad. if there's */
429    /* no dpad it will go into the zoom area */
430    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
431    #define Z_GPS  1
432    #else
433    #define Z_GPS  0
434    #endif
435    
436  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
437  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
438    #if !Z_GPS
439  #define OSD_H    (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW)  #define OSD_H    (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW)
440    #else
441    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
442    #endif
443    
444    #ifdef OSD_SHADOW_ENABLE
445  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
446    #endif
447    
448    #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
449    
 #define Z_TOP    (2 * D_RAD + Z_STEP)  
450  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
451  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
452  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
453  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
454    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
455    
456  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
457  static void  static void
458  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
459  {  {
460      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
461      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 88  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 464  osm_gps_map_osd_zoom_shape(cairo_t *cr,
464      cairo_arc     (cr, x+Z_LEFT,    y+Z_MID, Z_RAD,  M_PI/2, -M_PI/2);      cairo_arc     (cr, x+Z_LEFT,    y+Z_MID, Z_RAD,  M_PI/2, -M_PI/2);
465  }  }
466    
467    /* ------------------- color/shadow functions ----------------- */
468    
469    #ifndef OSD_COLOR
470    /* if no color has been specified we just use the gdks default colors */
471    static void
472    osd_labels(cairo_t *cr, gint width, gboolean enabled,
473                           GdkColor *fg, GdkColor *disabled) {
474        if(enabled)  gdk_cairo_set_source_color(cr, fg);
475        else         gdk_cairo_set_source_color(cr, disabled);
476        cairo_set_line_width (cr, width);
477    }
478    #else
479    static void
480    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
481        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
482        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
483        cairo_set_line_width (cr, width);
484    }
485    #endif
486    
487    #ifdef OSD_SHADOW_ENABLE
488    static void
489    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
490        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
491        cairo_set_line_width (cr, width);
492    }
493    #endif
494    
495    #ifndef OSD_NO_DPAD
496  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
497  static void  static void
498  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
499  {  {
500      cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI);      cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI);
501  }  }
502    #endif
503    
504    #ifdef OSD_SHADOW_ENABLE
505    static void
506    osd_shape_shadow(cairo_t *cr) {
507        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
508        cairo_fill (cr);
509        cairo_stroke (cr);
510    }
511    #endif
512    
513    #ifndef OSD_COLOR
514    /* if no color has been specified we just use the gdks default colors */
515    static void
516    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
517        gdk_cairo_set_source_color(cr, bg);
518        cairo_fill_preserve (cr);
519        gdk_cairo_set_source_color(cr, fg);
520        cairo_set_line_width (cr, 1);
521        cairo_stroke (cr);
522    }
523    #else
524    static void
525    osd_shape(cairo_t *cr) {
526        cairo_set_source_rgb (cr, OSD_COLOR_BG);
527        cairo_fill_preserve (cr);
528        cairo_set_source_rgb (cr, OSD_COLOR);
529        cairo_set_line_width (cr, 1);
530        cairo_stroke (cr);
531    }
532    #endif
533    
534    
535  static gboolean  static gboolean
536  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)
# Line 101  osm_gps_map_in_circle(gint x, gint y, gi Line 538  osm_gps_map_in_circle(gint x, gint y, gi
538      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
539  }  }
540    
541    #ifndef OSD_NO_DPAD
542  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
543  static osd_button_t  static osd_button_t
544  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
545  {  {
546      /* within entire dpad circle */      /* within entire dpad circle */
547      if( osm_gps_map_in_circle(x, y, OSD_X + D_RAD, OSD_Y + D_RAD, D_RAD))      if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD))
548      {      {
549          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
550          x -= (OSD_X + D_RAD);          x -= D_RAD;
551          y -= (OSD_Y + D_RAD);          y -= D_RAD;
552    
553    #ifdef OSD_GPS_BUTTON
554          /* check for dpad center goes here! */          /* check for dpad center goes here! */
555          if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3))          if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3))
556              return OSD_GPS;              return OSD_GPS;
557    #endif
558    
559          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
560              return OSD_UP;              return OSD_UP;
# Line 132  osm_gps_map_osd_check_dpad(gint x, gint Line 572  osm_gps_map_osd_check_dpad(gint x, gint
572      }      }
573      return OSD_NONE;      return OSD_NONE;
574  }  }
575    #endif
576    
577  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
578  static osd_button_t  static osd_button_t
579  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
580      if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {      if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
581    
582          /* within circle around (-) label */          /* within circle around (-) label */
583          if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD))
             return OSD_OUT;  
   
         /* between center of (-) button and center of entire zoom control area */  
         if(x > OSD_LEFT && x < OSD_X + D_RAD)  
584              return OSD_OUT;              return OSD_OUT;
585    
586          /* within circle around (+) label */          /* within circle around (+) label */
587          if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD))
588              return OSD_IN;              return OSD_IN;
589    
590    #if Z_GPS == 1
591            /* within square around center */
592            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
593                return OSD_GPS;
594    #endif
595    
596            /* between center of (-) button and center of entire zoom control area */
597            if(x > OSD_LEFT && x < D_RAD)
598                return OSD_OUT;
599    
600          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
601          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
602              return OSD_IN;              return OSD_IN;
603      }      }
604    
605      return OSD_NONE;      return OSD_NONE;
606  }  }
607    
608  static osd_button_t  #ifdef OSD_SOURCE_SEL
 osm_gps_map_osd_check(gint x, gint y) {  
     osd_button_t but = OSD_NONE;  
609    
610      /* first do a rough test for the OSD area. */  /* place source selection at right border */
611      /* this is just to avoid an unnecessary detailed test */  #define OSD_S_RAD (Z_RAD)
612      if(x > OSD_X && x < OSD_X + OSD_W &&  #define OSD_S_X   (-OSD_X)
613         y > OSD_Y && y < OSD_Y + OSD_H) {  #define OSD_S_Y   (OSD_Y)
614          but = osm_gps_map_osd_check_dpad(x, y);  #define OSD_S_PW  (2 * Z_RAD)
615    #define OSD_S_W   (OSD_S_PW)
616    #define OSD_S_PH  (2 * Z_RAD)
617    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
618    
619    /* size of usable area when expanded */
620    #define OSD_S_AREA_W (priv->source_sel.width)
621    #define OSD_S_AREA_H (priv->source_sel.height)
622    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
623    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
624    
625    /* internal value to draw the arrow on the "puller" */
626    #define OSD_S_D0  (OSD_S_RAD/2)
627    #ifndef OSD_FONT_SIZE
628    #define OSD_FONT_SIZE 16.0
629    #endif
630    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
631    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
632    
633          if(but == OSD_NONE)  /* draw the shape of the source selection OSD, either only the puller (not expanded) */
634              but = osm_gps_map_osd_check_zoom(x, y);  /* or the entire menu incl. the puller (expanded) */
635    static void
636    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
637        if(!priv->source_sel.expanded) {
638            /* just draw the puller */
639            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
640            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
641            cairo_line_to (cr, x + OSD_S_PW, y);
642        } else {
643            /* draw the puller and the area itself */
644            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
645            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
646            if(OSD_S_Y > 0) {
647                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
648                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
649            } else {
650                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
651                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
652                cairo_line_to (cr, x + OSD_S_PW, y);
653            }
654            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
655            cairo_close_path (cr);
656      }      }
   
     return but;  
657  }  }
658    
659  static void  static void
660  osm_gps_map_osd_shape_shadow(cairo_t *cr) {  osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
661      cairo_set_source_rgba (cr, 0, 0, 0, 0.2);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
     cairo_fill (cr);  
     cairo_stroke (cr);  
 }  
662    
663  static void      int py = offset + OSD_S_RAD - OSD_S_D0;
 osm_gps_map_osd_shape(cairo_t *cr) {  
     cairo_set_source_rgb (cr, 1, 1, 1);  
     cairo_fill_preserve (cr);  
     cairo_set_source_rgb (cr, OSD_COLOR);  
     cairo_set_line_width (cr, 1);  
     cairo_stroke (cr);  
 }  
664    
665  static void      if(!priv->source_sel.expanded) {
666  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {          /* draw the "puller" open (<) arrow */
667      /* move reference to dpad center */          cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
668      x += D_RAD;          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
669      y += D_RAD;          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
670        } else {
671            if(OSD_S_Y < 0)
672                py += OSD_S_AREA_H - OSD_S_PH;
673    
674            /* draw the "puller" close (>) arrow */
675            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
676            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
677            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
678            cairo_stroke(cr);
679    
680            /* don't draw a shadow for the text content */
681            if(offset == 1) {
682                gint source;
683                g_object_get(osd->widget, "map-source", &source, NULL);
684    
685                cairo_select_font_face (cr, "Sans",
686                                        CAIRO_FONT_SLANT_NORMAL,
687                                        CAIRO_FONT_WEIGHT_BOLD);
688                cairo_set_font_size (cr, OSD_FONT_SIZE);
689    
690                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
691                    OSM_GPS_MAP_SOURCE_LAST;
692                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
693                    cairo_text_extents_t extents;
694                    const char *src = osm_gps_map_source_get_friendly_name(i);
695                    cairo_text_extents (cr, src, &extents);
696    
697                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
698                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
699    
700                    /* draw filled rectangle if selected */
701                    if(source == i) {
702                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
703                                        y - OSD_TEXT_SKIP,
704                                        priv->source_sel.width - OSD_TEXT_BORDER,
705                                        step + OSD_TEXT_SKIP);
706                        cairo_fill(cr);
707    
708                        /* temprarily draw with background color */
709    #ifndef OSD_COLOR
710                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
711                        gdk_cairo_set_source_color(cr, &bg);
712    #else
713                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
714    #endif
715                    }
716    
717      const static gint offset[][3][2] = {                  cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
718          /* left arrow/triangle */                  cairo_show_text (cr, src);
         { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } },  
         /* right arrow/triangle */  
         { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } },  
         /* top arrow/triangle */  
         { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } },  
         /* bottom arrow/triangle */  
         { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } }  
     };  
719    
720      int i;                  /* restore color */
721      for(i=0;i<4;i++) {                  if(source == i) {
722          cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);  #ifndef OSD_COLOR
723          cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);                      GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
724          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);                      gdk_cairo_set_source_color(cr, &fg);
725    #else
726                        cairo_set_source_rgb (cr, OSD_COLOR);
727    #endif
728                    }
729                }
730            }
731      }      }
732  }  }
733    
 /* draw the sattelite dish icon in the center of the dpad */  
 #define GPS_V0  (D_RAD/8)  
 #define GPS_V1  (D_RAD/10)  
 #define GPS_V2  (D_RAD/5)  
   
 /* draw a satellite receiver dish */  
734  static void  static void
735  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
736      /* move reference to dpad center */      osd_priv_t *priv = (osd_priv_t*)osd->priv;
     x += D_RAD;  
     y += D_RAD + GPS_V0;  
737    
738      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      if(priv->source_sel.rendered && !force_rerender)
739      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);          return;
     cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);  
     cairo_close_path (cr);  
740    
741      cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);      priv->source_sel.rendered = TRUE;
     cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);  
     cairo_close_path (cr);  
742    
743      x += GPS_V1;  #ifndef OSD_COLOR
744      cairo_move_to (cr, x, y-GPS_V2);      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
745      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
746  }      GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
747    #endif
748    
749  #define Z_LEN  (2*Z_RAD/3)      /* draw source selector */
750        cairo_t *cr = cairo_create(priv->source_sel.surface);
751        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
752        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
753        cairo_paint(cr);
754        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
755    
756  static void  #ifdef OSD_SHADOW_ENABLE
757  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {      osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
758      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      osd_shape_shadow(cr);
759      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);  #endif
760    
761      cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);      osd_source_shape(priv, cr, 1, 1);
762      cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);  #ifndef OSD_COLOR
763      cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);      osd_shape(cr, &bg, &fg);
764      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);  #else
765  }      osd_shape(cr);
766    #endif
767    
768  static void  #ifdef OSD_SHADOW_ENABLE
769  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {      osd_labels_shadow(cr, Z_RAD/3, TRUE);
770      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);      osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
     else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);  
     cairo_set_line_width (cr, width);  
771      cairo_stroke (cr);      cairo_stroke (cr);
772  }  #endif
773    #ifndef OSD_COLOR
774  static void      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
775  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  #else
776      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);      osd_labels(cr, Z_RAD/3, TRUE);
777      cairo_set_line_width (cr, width);  #endif
778        osd_source_content(osd, cr, 1);
779      cairo_stroke (cr);      cairo_stroke (cr);
780    
781        cairo_destroy(cr);
782  }  }
783    
784    /* re-allocate the buffer used to draw the menu. This is used */
785    /* to collapse/expand the buffer */
786  static void  static void
787  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
788      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
789    
790      /* first fill with transparency */      /* re-allocate offscreen bitmap */
791      cairo_t *cr = cairo_create(priv->overlay);      g_assert (priv->source_sel.surface);
     cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);  
     cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);  
     cairo_paint(cr);  
792    
793      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      int w = OSD_S_W, h = OSD_S_H;
794        if(priv->source_sel.expanded) {
795            cairo_text_extents_t extents;
796    
797            /* determine content size */
798            cairo_t *cr = cairo_create(priv->source_sel.surface);
799            cairo_select_font_face (cr, "Sans",
800                                    CAIRO_FONT_SLANT_NORMAL,
801                                    CAIRO_FONT_WEIGHT_BOLD);
802            cairo_set_font_size (cr, OSD_FONT_SIZE);
803    
804            /* calculate menu size */
805            int i, max_h = 0, max_w = 0;
806            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
807                const char *src = osm_gps_map_source_get_friendly_name(i);
808                cairo_text_extents (cr, src, &extents);
809    
810                if(extents.width > max_w) max_w = extents.width;
811                if(extents.height > max_h) max_h = extents.height;
812            }
813            cairo_destroy(cr);
814    
815            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
816            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
817                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
818    
819      /* --------- draw zoom and dpad shape shadow ----------- */          w = OSD_S_EXP_W;
820      gint x = 0, y = 0;          h = OSD_S_EXP_H;
821        }
822    
823      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      cairo_surface_destroy(priv->source_sel.surface);
824      osm_gps_map_osd_shape_shadow(cr);      priv->source_sel.surface =
825      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
     osm_gps_map_osd_shape_shadow(cr);  
826    
827      /* --------- draw zoom and dpad shape ----------- */      osd_render_source_sel(osd, TRUE);
828    }
829    
830      osm_gps_map_osd_zoom_shape(cr, x, y);  #define OSD_HZ      15
831      osm_gps_map_osd_shape(cr);  #define OSD_TIME    500
     osm_gps_map_osd_dpad_shape(cr, x, y);  
     osm_gps_map_osd_shape(cr);  
832    
833      /* --------- draw zoom and dpad labels --------- */  static gboolean osd_source_animate(gpointer data) {
834        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
835        osd_priv_t *priv = (osd_priv_t*)osd->priv;
836        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
837        gboolean done = FALSE;
838        priv->source_sel.count += priv->source_sel.dir;
839    
840        /* shifting in */
841        if(priv->source_sel.dir < 0) {
842            if(priv->source_sel.count <= 0) {
843                priv->source_sel.count = 0;
844                done = TRUE;
845            }
846        } else {
847            if(priv->source_sel.count >= 1000) {
848                priv->source_sel.expanded = FALSE;
849                osd_source_reallocate(osd);
850    
851                priv->source_sel.count = 1000;
852                done = TRUE;
853            }
854        }
855    
856    
857        /* count runs linearly from 0 to 1000, map this nicely onto a position */
858    
859        /* nice sinoid mapping */
860        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
861        priv->source_sel.shift =
862            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
863            m * diff;
864    
865        /* make sure the screen is updated */
866        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
867    
868        /* stop animation if done */
869        if(done)
870            priv->source_sel.handler_id = 0;
871    
872        return !done;
873    }
874    
875    /* switch between expand and collapse mode of source selection */
876    static void
877    osd_source_toggle(osm_gps_map_osd_t *osd)
878    {
879        osd_priv_t *priv = (osd_priv_t*)osd->priv;
880    
881        /* ignore clicks while animation is running */
882        if(priv->source_sel.handler_id)
883            return;
884    
885        /* expand immediately, collapse is handle at the end of the */
886        /* collapse animation */
887        if(!priv->source_sel.expanded) {
888            priv->source_sel.expanded = TRUE;
889            osd_source_reallocate(osd);
890    
891            priv->source_sel.count = 1000;
892            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
893            priv->source_sel.dir = -1000/OSD_HZ;
894        } else {
895            priv->source_sel.count =  0;
896            priv->source_sel.shift = osd->widget->allocation.width -
897                OSD_S_EXP_W + OSD_S_X;
898            priv->source_sel.dir = +1000/OSD_HZ;
899        }
900    
901        /* start timer to handle animation */
902        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
903                                                      osd_source_animate, osd);
904    }
905    
906    /* check if the user clicked inside the source selection area */
907    static osd_button_t
908    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
909        osd_priv_t *priv = (osd_priv_t*)osd->priv;
910    
911        if(!priv->source_sel.expanded)
912            x -= osd->widget->allocation.width - OSD_S_W;
913        else
914            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
915    
916        if(OSD_S_Y > 0)
917            y -= OSD_S_Y;
918        else
919            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
920    
921        /* within square around puller? */
922        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
923            /* really within puller shape? */
924            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
925                /* expand source selector */
926                if(down)
927                    osd_source_toggle(osd);
928    
929                /* tell upper layers that user clicked some background element */
930                /* of the OSD */
931                return OSD_BG;
932            }
933        }
934    
935        /* check for clicks into data area */
936        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
937            /* re-adjust from puller top to content top */
938            if(OSD_S_Y < 0)
939                y += OSD_S_EXP_H - OSD_S_PH;
940    
941            if(x > OSD_S_PW &&
942               x < OSD_S_PW + OSD_S_EXP_W &&
943               y > 0 &&
944               y < OSD_S_EXP_H) {
945    
946                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
947                    / OSM_GPS_MAP_SOURCE_LAST;
948    
949                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
950                y /= step;
951                y += 1;
952    
953                if(down) {
954                    gint old = 0;
955                    g_object_get(osd->widget, "map-source", &old, NULL);
956    
957                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
958                       y <= OSM_GPS_MAP_SOURCE_LAST &&
959                       old != y) {
960                        g_object_set(osd->widget, "map-source", y, NULL);
961    
962                        osd_render_source_sel(osd, TRUE);
963                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
964                    }
965                }
966    
967                /* return "clicked in OSD background" to prevent further */
968                /* processing by application */
969                return OSD_BG;
970            }
971        }
972    
973      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      return OSD_NONE;
974      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  }
975      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #endif // OSD_SOURCE_SEL
976      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  
977      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  static osd_button_t
978    osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) {
979      osm_gps_map_osd_zoom_labels(cr, x, y);      osd_button_t but = OSD_NONE;
980      osm_gps_map_osd_dpad_labels(cr, x, y);  
981      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);  #ifdef OSD_BALLOON
982      osm_gps_map_osd_dpad_gps(cr, x, y);      if(down) {
983      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);          /* needed to handle balloons that are created at click */
984            osd_priv_t *priv = (osd_priv_t*)osd->priv;
985            priv->balloon.just_created = FALSE;
986        }
987    #endif
988    
989    #ifdef OSD_SOURCE_SEL
990        /* the source selection area is handles internally */
991        but = osd_source_check(osd, down, x, y);
992    #endif
993    
994        if(but == OSD_NONE) {
995            gint mx = x - OSD_X;
996            gint my = y - OSD_Y;
997    
998            if(OSD_X < 0)
999                mx -= (osd->widget->allocation.width - OSD_W);
1000    
1001            if(OSD_Y < 0)
1002                my -= (osd->widget->allocation.height - OSD_H);
1003    
1004            /* first do a rough test for the OSD area. */
1005            /* this is just to avoid an unnecessary detailed test */
1006            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
1007    #ifndef OSD_NO_DPAD
1008                but = osd_check_dpad(mx, my);
1009    #endif
1010            }
1011    
1012            if(but == OSD_NONE)
1013                but = osd_check_zoom(mx, my);
1014        }
1015    
1016    #ifdef OSD_BALLOON
1017        if(but == OSD_NONE) {
1018            /* check if user clicked into balloon */
1019            if(osd_balloon_check(osd, click, down, x, y))
1020                but = OSD_BG;
1021        }
1022    #endif
1023    
1024        return but;
1025    }
1026    
1027    #ifndef OSD_NO_DPAD
1028    static void
1029    osd_dpad_labels(cairo_t *cr, gint x, gint y) {
1030        /* move reference to dpad center */
1031        x += D_RAD;
1032        y += D_RAD;
1033    
1034        const static gint offset[][3][2] = {
1035            /* left arrow/triangle */
1036            { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } },
1037            /* right arrow/triangle */
1038            { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } },
1039            /* top arrow/triangle */
1040            { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } },
1041            /* bottom arrow/triangle */
1042            { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } }
1043        };
1044    
1045        int i;
1046        for(i=0;i<4;i++) {
1047            cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);
1048            cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);
1049            cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
1050        }
1051    }
1052    #endif
1053    
1054    #ifdef OSD_GPS_BUTTON
1055    /* draw the satellite dish icon in the center of the dpad */
1056    #define GPS_V0  (D_RAD/7)
1057    #define GPS_V1  (D_RAD/10)
1058    #define GPS_V2  (D_RAD/5)
1059    
1060    /* draw a satellite receiver dish */
1061    /* this is either drawn in the center of the dpad (if present) */
1062    /* or in the middle of the zoom area */
1063    static void
1064    osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1065        /* move reference to dpad center */
1066        x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1067        y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
1068    
1069        cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1070        cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
1071        cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);
1072        cairo_close_path (cr);
1073    
1074        cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);
1075        cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);
1076        cairo_close_path (cr);
1077    
1078        x += GPS_V1;
1079        cairo_move_to (cr, x, y-GPS_V2);
1080        cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1081    }
1082    #endif
1083    
1084    #define Z_LEN  (2*Z_RAD/3)
1085    
1086    static void
1087    osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1088        cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1089        cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1090    
1091        cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);
1092        cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);
1093        cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);
1094        cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1095    }
1096    
1097    #ifdef OSD_COORDINATES
1098    
1099    #ifndef OSD_COORDINATES_FONT_SIZE
1100    #define OSD_COORDINATES_FONT_SIZE 12
1101    #endif
1102    
1103    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1104    
1105    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1106    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1107    
1108    /* these can be overwritten with versions that support */
1109    /* localization */
1110    #ifndef OSD_COORDINATES_CHR_N
1111    #define OSD_COORDINATES_CHR_N  "N"
1112    #endif
1113    #ifndef OSD_COORDINATES_CHR_S
1114    #define OSD_COORDINATES_CHR_S  "S"
1115    #endif
1116    #ifndef OSD_COORDINATES_CHR_E
1117    #define OSD_COORDINATES_CHR_E  "E"
1118    #endif
1119    #ifndef OSD_COORDINATES_CHR_W
1120    #define OSD_COORDINATES_CHR_W  "W"
1121    #endif
1122    
1123    
1124    
1125    /* this is the classic geocaching notation */
1126    static char
1127    *osd_latitude_str(float latitude) {
1128        char *c = OSD_COORDINATES_CHR_N;
1129        float integral, fractional;
1130    
1131        if(isnan(latitude))
1132            return NULL;
1133    
1134        if(latitude < 0) {
1135            latitude = fabs(latitude);
1136            c = OSD_COORDINATES_CHR_S;
1137        }
1138    
1139        fractional = modff(latitude, &integral);
1140    
1141        return g_strdup_printf("%s %02d° %06.3f'",
1142                               c, (int)integral, fractional*60.0);
1143    }
1144    
1145    static char
1146    *osd_longitude_str(float longitude) {
1147        char *c = OSD_COORDINATES_CHR_E;
1148        float integral, fractional;
1149    
1150        if(isnan(longitude))
1151            return NULL;
1152    
1153        if(longitude < 0) {
1154            longitude = fabs(longitude);
1155            c = OSD_COORDINATES_CHR_W;
1156        }
1157    
1158        fractional = modff(longitude, &integral);
1159    
1160        return g_strdup_printf("%s %03d° %06.3f'",
1161                               c, (int)integral, fractional*60.0);
1162    }
1163    
1164    /* render a string at the given screen position */
1165    static int
1166    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1167        char *p = g_strdup(text);
1168        cairo_text_extents_t extents;
1169        cairo_text_extents (cr, p, &extents);
1170    
1171        /* check if text needs to be truncated */
1172        int len = strlen(text)-2;
1173        while(extents.width > width) {
1174            len--;
1175            strcpy(p+len, "...");
1176            cairo_text_extents (cr, p, &extents);
1177        }
1178    
1179        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1180        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1181        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1182        cairo_text_path (cr, p);
1183        cairo_stroke (cr);
1184    
1185        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1186        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1187        cairo_show_text (cr, p);
1188    
1189        g_free(p);
1190    
1191        /* skip + 1/4 line */
1192        return y + 5*OSD_COORDINATES_FONT_SIZE/4;
1193    }
1194    
1195    static void
1196    osd_render_coordinates(osm_gps_map_osd_t *osd)
1197    {
1198        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1199    
1200        /* get current map position */
1201        gfloat lat, lon;
1202        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1203    
1204        /* check if position has changed enough to require redraw */
1205        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1206            /* 1/60000 == 1/1000 minute */
1207            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1208               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1209                return;
1210    
1211        priv->coordinates.lat = lat;
1212        priv->coordinates.lon = lon;
1213    
1214        /* first fill with transparency */
1215        cairo_t *cr = cairo_create(priv->coordinates.surface);
1216        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1217        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1218        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1219        cairo_paint(cr);
1220        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1221    
1222        cairo_select_font_face (cr, "Sans",
1223                                CAIRO_FONT_SLANT_NORMAL,
1224                                CAIRO_FONT_WEIGHT_BOLD);
1225        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1226    
1227        char *latitude = osd_latitude_str(lat);
1228        char *longitude = osd_longitude_str(lon);
1229    
1230        int y = OSD_COORDINATES_OFFSET;
1231        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1232        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1233    
1234        g_free(latitude);
1235        g_free(longitude);
1236    
1237      cairo_destroy(cr);      cairo_destroy(cr);
1238  }  }
1239    #endif  // OSD_COORDINATES
1240    
1241    #ifdef OSD_NAV
1242    #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1243    #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1244    
1245    /* http://mathforum.org/library/drmath/view/55417.html */
1246    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1247      return atan2( sin(lon2 - lon1) * cos(lat2),
1248                    cos(lat1) * sin(lat2) -
1249                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1250    }
1251    
1252    /* http://mathforum.org/library/drmath/view/51722.html */
1253    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1254      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1255                       sin(lat1) * sin(lat2));
1256    
1257      //  return(aob * 3959.0);   /* great circle radius in miles */
1258    
1259      return(aob * 6371000.0);     /* great circle radius in meters */
1260    }
1261    
1262  static void  static void
1263  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset)  osd_render_nav(osm_gps_map_osd_t *osd)
1264  {  {
1265      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1266    
1267      /* backup previous contents */      if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1268      if(!priv->backup)          return;
         priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1);  
1269    
1270      gint x = OSD_X + xoffset;      /* first fill with transparency */
1271      gint y = OSD_Y + yoffset;      cairo_t *cr = cairo_create(priv->nav.surface);
1272        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1273        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1274        cairo_paint(cr);
1275        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1276    
1277      /* create backup of background */      cairo_select_font_face (cr, "Sans",
1278      gdk_draw_drawable(priv->backup,                              CAIRO_FONT_SLANT_NORMAL,
1279          osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],                              CAIRO_FONT_WEIGHT_BOLD);
1280                        osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);      cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1281    
1282      priv->backup_x = x-1;      char *latitude = osd_latitude_str(priv->nav.lat);
1283      priv->backup_y = y-1;      char *longitude = osd_longitude_str(priv->nav.lon);
1284    
1285        int y = OSD_COORDINATES_OFFSET;
1286        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1287        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1288        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1289    
1290        g_free(latitude);
1291        g_free(longitude);
1292    
1293      /* OSD itself uses some off-screen rendering, so check if the */      /* draw the compass */
1294      /* offscreen buffer is present and create it if not */      int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1295      if(!priv->overlay) {      if(radius > OSD_NAV_W/2)
1296          /* create overlay ... */          radius = OSD_NAV_W/2;
1297          priv->overlay =  
1298              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);      int x = OSD_NAV_W/2+1;
1299          /* ... and render it */      y += radius;
1300          osm_gps_map_osd_render(osd);  
1301        cairo_stroke (cr);
1302    
1303        /* draw background */
1304        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1305        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1306        cairo_fill_preserve (cr);
1307        cairo_set_source_rgb (cr, 0, 0, 0);
1308        cairo_set_line_width (cr, 1);
1309        cairo_stroke (cr);
1310    
1311        /* draw pointer */
1312    #define ARROW_WIDTH     0.3
1313    #define ARROW_LENGTH    0.7
1314    
1315        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1316        if(gps) {
1317            float arot = get_bearing(gps->rlat, gps->rlon,
1318                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1319    
1320            cairo_move_to(cr,
1321                          x + radius *  ARROW_LENGTH *  sin(arot),
1322                          y + radius *  ARROW_LENGTH * -cos(arot));
1323    
1324            cairo_line_to(cr,
1325                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1326                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1327    
1328            cairo_line_to(cr,
1329                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1330                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1331    
1332            cairo_line_to(cr,
1333                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1334                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1335    
1336            cairo_close_path(cr);
1337            cairo_set_source_rgb (cr, 0, 0, 0);
1338            cairo_fill (cr);
1339    
1340            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1341    
1342            float dist = get_distance(gps->rlat, gps->rlon,
1343                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1344    
1345            char *dist_str = NULL;
1346            if(!priv->nav.imperial) {
1347                /* metric is easy ... */
1348                if(dist<1000)
1349                    dist_str = g_strdup_printf("%u m", (int)dist);
1350                else
1351                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1352            } else {
1353                /* and now the hard part: scale for useful imperial values :-( */
1354                /* try to convert to feet, 1ft == 0.3048 m */
1355    
1356                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1357                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1358                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1359                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1360                else
1361                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1362            }
1363    
1364            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1365            g_free(dist_str);
1366      }      }
1367    
1368      // now draw this onto the original context      cairo_destroy(cr);
1369      cairo_t *cr = gdk_cairo_create(osd->pixmap);  }
1370      cairo_set_source_surface(cr, priv->overlay, x, y);  
1371    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1372        g_return_if_fail (OSM_IS_GPS_MAP (map));
1373    
1374        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1375        g_return_if_fail (osd);
1376    
1377        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1378        g_return_if_fail (priv);
1379    
1380        if(priv->nav.surface) {
1381            cairo_surface_destroy(priv->nav.surface);
1382            priv->nav.surface = NULL;
1383            priv->nav.lat = OSM_GPS_MAP_INVALID;
1384            priv->nav.lon = OSM_GPS_MAP_INVALID;
1385            if(priv->nav.name) g_free(priv->nav.name);
1386        }
1387        osm_gps_map_redraw(map);
1388    }
1389    
1390    void
1391    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1392                              float latitude, float longitude, char *name) {
1393        g_return_if_fail (OSM_IS_GPS_MAP (map));
1394    
1395        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1396        g_return_if_fail (osd);
1397    
1398        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1399        g_return_if_fail (priv);
1400    
1401        osm_gps_map_osd_clear_nav (map);
1402    
1403        /* allocate balloon surface */
1404        priv->nav.surface =
1405            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1406                                       OSD_NAV_W+2, OSD_NAV_H+2);
1407    
1408        priv->nav.lat = latitude;
1409        priv->nav.lon = longitude;
1410        priv->nav.name = g_strdup(name);
1411        priv->nav.imperial = imperial;
1412    
1413        osd_render_nav(osd);
1414    
1415        osm_gps_map_redraw(map);
1416    }
1417    
1418    #endif // OSD_NAV
1419    
1420    
1421    #ifdef OSD_CROSSHAIR
1422    
1423    #ifndef OSD_CROSSHAIR_RADIUS
1424    #define OSD_CROSSHAIR_RADIUS 10
1425    #endif
1426    
1427    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1428    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1429    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1430    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1431    
1432    static void
1433    osd_render_crosshair_shape(cairo_t *cr) {
1434        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1435                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1436    
1437        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1438                       OSD_CROSSHAIR_H/2);
1439        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1440        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1441                       OSD_CROSSHAIR_H/2);
1442        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1443    
1444        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1445                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1446        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1447        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1448                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1449        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1450    
1451        cairo_stroke (cr);
1452    }
1453    
1454    static void
1455    osd_render_crosshair(osm_gps_map_osd_t *osd)
1456    {
1457        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1458    
1459        if(priv->crosshair.rendered)
1460            return;
1461    
1462        priv->crosshair.rendered = TRUE;
1463    
1464        /* first fill with transparency */
1465        cairo_t *cr = cairo_create(priv->crosshair.surface);
1466        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1467        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1468      cairo_paint(cr);      cairo_paint(cr);
1469        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1470    
1471        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1472    
1473        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1474        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1475        osd_render_crosshair_shape(cr);
1476    
1477        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1478        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1479        osd_render_crosshair_shape(cr);
1480    
1481      cairo_destroy(cr);      cairo_destroy(cr);
1482  }  }
1483    #endif
1484    
1485    #ifdef OSD_SCALE
1486    
1487    #ifndef OSD_SCALE_FONT_SIZE
1488    #define OSD_SCALE_FONT_SIZE 12
1489    #endif
1490    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1491    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1492    
1493    /* various parameters used to create the scale */
1494    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1495    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1496    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1497    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1498    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1499    
1500  static void  static void
1501  osm_gps_map_osd_restore (osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1502  {  {
1503      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1504    
1505      /* restore backup of previous contents */      /* this only needs to be rendered if the zoom has changed */
1506      if(priv->backup) {      gint zoom;
1507          /* create backup of background */      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1508          gdk_draw_drawable(osd->pixmap,      if(zoom == priv->scale.zoom)
1509                            osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],          return;
1510                            priv->backup, 0, 0,  
1511                            priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2);      priv->scale.zoom = zoom;
1512    
1513        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1514    
1515        /* first fill with transparency */
1516        cairo_t *cr = cairo_create(priv->scale.surface);
1517        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1518        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1519        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1520        cairo_paint(cr);
1521        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1522    
1523        /* determine the size of the scale width in meters */
1524        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1525    
1526        /* scale this to useful values */
1527        int exp = logf(width)*M_LOG10E;
1528        int mant = width/pow(10,exp);
1529        int width_metric = mant * pow(10,exp);
1530        char *dist_str = NULL;
1531        if(width_metric<1000)
1532            dist_str = g_strdup_printf("%u m", width_metric);
1533        else
1534            dist_str = g_strdup_printf("%u km", width_metric/1000);
1535        width_metric /= m_per_pix;
1536    
1537        /* and now the hard part: scale for useful imperial values :-( */
1538        /* try to convert to feet, 1ft == 0.3048 m */
1539        width /= 0.3048;
1540        float imp_scale = 0.3048;
1541        char *dist_imp_unit = "ft";
1542    
1543        if(width >= 100) {
1544            /* 1yd == 3 feet */
1545            width /= 3.0;
1546            imp_scale *= 3.0;
1547            dist_imp_unit = "yd";
1548    
1549            if(width >= 1760.0) {
1550                /* 1mi == 1760 yd */
1551                width /= 1760.0;
1552                imp_scale *= 1760.0;
1553                dist_imp_unit = "mi";
1554            }
1555      }      }
1556    
1557        /* also convert this to full tens/hundreds */
1558        exp = logf(width)*M_LOG10E;
1559        mant = width/pow(10,exp);
1560        int width_imp = mant * pow(10,exp);
1561        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1562    
1563        /* convert back to pixels */
1564        width_imp *= imp_scale;
1565        width_imp /= m_per_pix;
1566    
1567        cairo_select_font_face (cr, "Sans",
1568                                CAIRO_FONT_SLANT_NORMAL,
1569                                CAIRO_FONT_WEIGHT_BOLD);
1570        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1571        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1572    
1573        cairo_text_extents_t extents;
1574        cairo_text_extents (cr, dist_str, &extents);
1575    
1576        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1577        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1578        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1579        cairo_text_path (cr, dist_str);
1580        cairo_stroke (cr);
1581        cairo_move_to (cr, 2*OSD_SCALE_FD,
1582                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1583        cairo_text_path (cr, dist_str_imp);
1584        cairo_stroke (cr);
1585    
1586        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1587        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1588        cairo_show_text (cr, dist_str);
1589        cairo_move_to (cr, 2*OSD_SCALE_FD,
1590                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1591        cairo_show_text (cr, dist_str_imp);
1592    
1593        g_free(dist_str);
1594        g_free(dist_str_imp);
1595    
1596        /* draw white line */
1597        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1598        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1599        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1600        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1601        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1602        cairo_rel_line_to (cr, width_metric, 0);
1603        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1604        cairo_stroke(cr);
1605        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1606        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1607        cairo_rel_line_to (cr, width_imp, 0);
1608        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1609        cairo_stroke(cr);
1610    
1611        /* draw black line */
1612        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1613        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1614        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1615        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1616        cairo_rel_line_to (cr, width_metric, 0);
1617        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1618        cairo_stroke(cr);
1619        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1620        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1621        cairo_rel_line_to (cr, width_imp, 0);
1622        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1623        cairo_stroke(cr);
1624    
1625        cairo_destroy(cr);
1626    }
1627    #endif
1628    
1629    static void
1630    osd_render_controls(osm_gps_map_osd_t *osd)
1631    {
1632        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1633    
1634        if(priv->controls.rendered
1635    #ifdef OSD_GPS_BUTTON
1636           && (priv->controls.gps_enabled == (osd->cb != NULL))
1637    #endif
1638           )
1639            return;
1640    
1641    #ifdef OSD_GPS_BUTTON
1642        priv->controls.gps_enabled = (osd->cb != NULL);
1643    #endif
1644        priv->controls.rendered = TRUE;
1645    
1646    #ifndef OSD_COLOR
1647        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1648        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1649        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1650    #endif
1651    
1652        /* first fill with transparency */
1653        cairo_t *cr = cairo_create(priv->controls.surface);
1654        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1655        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1656        cairo_paint(cr);
1657        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1658    
1659        /* --------- draw zoom and dpad shape shadow ----------- */
1660    #ifdef OSD_SHADOW_ENABLE
1661        osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1662        osd_shape_shadow(cr);
1663    #ifndef OSD_NO_DPAD
1664        osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1665        osd_shape_shadow(cr);
1666    #endif
1667    #endif
1668    
1669        /* --------- draw zoom and dpad shape ----------- */
1670    
1671        osd_zoom_shape(cr, 1, 1);
1672    #ifndef OSD_COLOR
1673        osd_shape(cr, &bg, &fg);
1674    #else
1675        osd_shape(cr);
1676    #endif
1677    #ifndef OSD_NO_DPAD
1678        osd_dpad_shape(cr, 1, 1);
1679    #ifndef OSD_COLOR
1680        osd_shape(cr, &bg, &fg);
1681    #else
1682        osd_shape(cr);
1683    #endif
1684    #endif
1685    
1686        /* --------- draw zoom and dpad labels --------- */
1687    
1688    #ifdef OSD_SHADOW_ENABLE
1689        osd_labels_shadow(cr, Z_RAD/3, TRUE);
1690        osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1691    #ifndef OSD_NO_DPAD
1692        osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1693    #endif
1694        cairo_stroke(cr);
1695    #ifdef OSD_GPS_BUTTON
1696        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1697        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1698        cairo_stroke(cr);
1699    #endif
1700    #endif
1701    
1702    #ifndef OSD_COLOR
1703        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1704    #else
1705        osd_labels(cr, Z_RAD/3, TRUE);
1706    #endif
1707        osd_zoom_labels(cr, 1, 1);
1708    #ifndef OSD_NO_DPAD
1709        osd_dpad_labels(cr, 1, 1);
1710    #endif
1711        cairo_stroke(cr);
1712    
1713    #ifndef OSD_COLOR
1714        osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1715    #else
1716        osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1717    #endif
1718    #ifdef OSD_GPS_BUTTON
1719        osd_dpad_gps(cr, 1, 1);
1720    #endif
1721        cairo_stroke(cr);
1722    
1723        cairo_destroy(cr);
1724  }  }
1725    
1726  static void  static void
1727  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_render(osm_gps_map_osd_t *osd)
1728    {
1729        /* this function is actually called pretty often since the */
1730        /* OSD contents may have changed (due to a coordinate/zoom change). */
1731        /* The different OSD parts have to make sure that they don't */
1732        /* render unneccessarily often and thus waste CPU power */
1733    
1734        osd_render_controls(osd);
1735    
1736    #ifdef OSD_SOURCE_SEL
1737        osd_render_source_sel(osd, FALSE);
1738    #endif
1739    
1740    #ifdef OSD_SCALE
1741        osd_render_scale(osd);
1742    #endif
1743    
1744    #ifdef OSD_CROSSHAIR
1745        osd_render_crosshair(osd);
1746    #endif
1747    
1748    #ifdef OSD_NAV
1749        osd_render_nav(osd);
1750    #endif
1751    
1752    #ifdef OSD_COORDINATES
1753        osd_render_coordinates(osd);
1754    #endif
1755    }
1756    
1757    static void
1758    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1759    {
1760        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1761    
1762        /* OSD itself uses some off-screen rendering, so check if the */
1763        /* offscreen buffer is present and create it if not */
1764        if(!priv->controls.surface) {
1765            /* create overlay ... */
1766            priv->controls.surface =
1767                cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1768    
1769            priv->controls.rendered = FALSE;
1770    #ifdef OSD_GPS_BUTTON
1771            priv->controls.gps_enabled = FALSE;
1772    #endif
1773    
1774    #ifdef OSD_SOURCE_SEL
1775            /* the initial OSD state is alway not-expanded */
1776            priv->source_sel.surface =
1777                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1778                                               OSD_S_W+2, OSD_S_H+2);
1779            priv->source_sel.rendered = FALSE;
1780    #endif
1781    
1782    #ifdef OSD_SCALE
1783            priv->scale.surface =
1784                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1785                                           OSD_SCALE_W, OSD_SCALE_H);
1786            priv->scale.zoom = -1;
1787    #endif
1788    
1789    #ifdef OSD_CROSSHAIR
1790            priv->crosshair.surface =
1791                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1792                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1793            priv->crosshair.rendered = FALSE;
1794    #endif
1795    
1796    #ifdef OSD_COORDINATES
1797            priv->coordinates.surface =
1798                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1799                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1800    
1801            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1802    #endif
1803    
1804            /* ... and render it */
1805            osd_render(osd);
1806        }
1807    
1808        // now draw this onto the original context
1809        cairo_t *cr = gdk_cairo_create(drawable);
1810    
1811        gint x, y;
1812    
1813    #ifdef OSD_SCALE
1814        x =  OSD_X;
1815        y = -OSD_Y;
1816        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1817        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1818    
1819        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1820        cairo_paint(cr);
1821    #endif
1822    
1823    #ifdef OSD_CROSSHAIR
1824        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1825        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1826    
1827        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1828        cairo_paint(cr);
1829    #endif
1830    
1831    #ifdef OSD_NAV
1832        if(priv->nav.surface) {
1833            x =  OSD_X;
1834            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1835            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1836    
1837            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1838            cairo_paint(cr);
1839        }
1840    #endif
1841    
1842    #ifdef OSD_COORDINATES
1843        x = -OSD_X;
1844        y = -OSD_Y;
1845        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1846        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1847    
1848        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1849        cairo_paint(cr);
1850    #endif
1851    
1852    #ifdef OSD_BALLOON
1853        if(priv->balloon.surface) {
1854    
1855            /* convert given lat lon into screen coordinates */
1856            gint x, y;
1857            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1858                                          priv->balloon.lat, priv->balloon.lon,
1859                                          &x, &y);
1860    
1861            /* check if balloon needs to be rerendered */
1862            osd_render_balloon(osd);
1863    
1864            cairo_set_source_surface(cr, priv->balloon.surface,
1865                                     x + priv->balloon.offset_x,
1866                                     y + priv->balloon.offset_y);
1867            cairo_paint(cr);
1868        }
1869    #endif
1870    
1871        x = OSD_X;
1872        if(x < 0)
1873            x += osd->widget->allocation.width - OSD_W;
1874    
1875        y = OSD_Y;
1876        if(y < 0)
1877            y += osd->widget->allocation.height - OSD_H;
1878    
1879        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1880        cairo_paint(cr);
1881    
1882    #ifdef OSD_SOURCE_SEL
1883        if(!priv->source_sel.handler_id) {
1884            /* the OSD source selection is not being animated */
1885            if(!priv->source_sel.expanded)
1886                x = osd->widget->allocation.width - OSD_S_W;
1887            else
1888                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1889        } else
1890            x = priv->source_sel.shift;
1891    
1892        y = OSD_S_Y;
1893        if(OSD_S_Y < 0) {
1894            if(!priv->source_sel.expanded)
1895                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1896            else
1897                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1898        }
1899    
1900        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1901        cairo_paint(cr);
1902    #endif
1903    
1904        cairo_destroy(cr);
1905    }
1906    
1907    static void
1908    osd_free(osm_gps_map_osd_t *osd)
1909  {  {
1910      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1911    
1912      if (priv->backup)      if (priv->controls.surface)
1913          g_object_unref(priv->backup);           cairo_surface_destroy(priv->controls.surface);
1914    
1915    #ifdef OSD_SOURCE_SEL
1916        if(priv->source_sel.handler_id)
1917            gtk_timeout_remove(priv->source_sel.handler_id);
1918    
1919        if (priv->source_sel.surface)
1920             cairo_surface_destroy(priv->source_sel.surface);
1921    #endif
1922    
1923    #ifdef OSD_SCALE
1924        if (priv->scale.surface)
1925             cairo_surface_destroy(priv->scale.surface);
1926    #endif
1927    
1928      if (priv->overlay)  #ifdef OSD_CROSSHAIR
1929           cairo_surface_destroy(priv->overlay);      if (priv->crosshair.surface)
1930             cairo_surface_destroy(priv->crosshair.surface);
1931    #endif
1932    
1933    #ifdef OSD_NAV
1934        if (priv->nav.surface)
1935             cairo_surface_destroy(priv->nav.surface);
1936    #endif
1937    
1938    #ifdef OSD_COORDINATES
1939        if (priv->coordinates.surface)
1940             cairo_surface_destroy(priv->coordinates.surface);
1941    #endif
1942    
1943    #ifdef OSD_BALLOON
1944        if (priv->balloon.surface)
1945             cairo_surface_destroy(priv->balloon.surface);
1946    #endif
1947    
1948      g_free(priv);      g_free(priv);
1949  }  }
1950    
1951    static gboolean
1952    osd_busy(osm_gps_map_osd_t *osd)
1953    {
1954    #ifdef OSD_SOURCE_SEL
1955        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1956        return (priv->source_sel.handler_id != 0);
1957    #else
1958        return FALSE;
1959    #endif
1960    }
1961    
1962    static osd_button_t
1963    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
1964        return osd_check_int(osd, TRUE, down, x, y);
1965    }
1966    
1967  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1968      .restore    = osm_gps_map_osd_restore,      .widget     = NULL,
1969      .draw       = osm_gps_map_osd_draw,  
1970      .check      = osm_gps_map_osd_check,      .draw       = osd_draw,
1971      .render     = osm_gps_map_osd_render,      .check      = osd_check,
1972      .free       = osm_gps_map_osd_free,      .render     = osd_render,
1973        .free       = osd_free,
1974        .busy       = osd_busy,
1975    
1976      .cb         = NULL,      .cb         = NULL,
1977      .data       = NULL,      .data       = NULL,
# Line 399  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1985  osm_gps_map_osd_classic_init(OsmGpsMap *
1985  {  {
1986      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);
1987    
1988    #ifdef OSD_BALLOON
1989        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1990        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1991    #endif
1992    
1993      osd_classic.priv = priv;      osd_classic.priv = priv;
1994    
1995      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1996  }  }
1997    
1998    #ifdef OSD_GPS_BUTTON
1999  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  /* below are osd specific functions which aren't used by osm-gps-map */
2000    /* but instead are to be used by the main application */
2001    void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2002                                     gpointer data) {
2003      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
2004      g_return_if_fail (osd);      g_return_if_fail (osd);
2005    
2006      osd->cb = cb;      osd->cb = cb;
# Line 419  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2012  void osm_gps_map_osd_enable_gps (OsmGpsM
2012    
2013      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2014  }  }
2015    #endif
2016    
2017    osd_button_t
2018    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2019        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2020        g_return_val_if_fail (osd, OSD_NONE);
2021    
2022        return osd_check_int(osd, FALSE, TRUE, x, y);
2023    }
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  Added in v.136