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

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revision 74 by harbaum, Mon Aug 24 09:23:36 2009 UTC revision 202 by harbaum, Sat Nov 21 20:13:13 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      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
42      cairo_surface_t *overlay;      struct {
43            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      /* stuff required to restore the original map content */  #ifdef OSD_NAV
81      GdkPixmap *backup;      struct {
82      gint backup_x, backup_y;          cairo_surface_t *surface;
83            float lat, lon;
84            char *name;
85            gboolean imperial;    // display distance imperial/metric
86        } nav;
87    #endif
88    
89      GdkColor bg, fg, da;  #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    #if 0
139    #define FIN   printf("entering function %s\n", __func__);
140    #define FOUT  printf("leaving function %s\n", __func__);
141    #else
142    #define FIN   ;
143    #define FOUT  ;
144    #endif
145    
146    /* draw the bubble shape. this is used twice, once for the shape and once */
147    /* for the shadow */
148    static void
149    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
150           gboolean bottom, int px, int py, int px0, int px1) {
151    
152        FIN;
153    
154        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
155        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
156                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
157        if(!bottom) {
158            /* insert top pointer */
159            cairo_line_to (cr, px1, y0);
160            cairo_line_to (cr, px, py);
161            cairo_line_to (cr, px0, y0);
162        }
163    
164        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
165        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
166                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
167        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
168        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
169                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
170        if(bottom) {
171            /* insert bottom pointer */
172            cairo_line_to (cr, px0, y1);
173            cairo_line_to (cr, px, py);
174            cairo_line_to (cr, px1, y1);
175        }
176    
177        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
178        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
179                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
180    
181        cairo_close_path (cr);
182    
183        FOUT;
184    }
185    
186    static void
187    osd_render_balloon(osm_gps_map_osd_t *osd) {
188        FIN;
189    
190        osd_priv_t *priv = (osd_priv_t*)osd->priv;
191    
192        if(!priv->balloon.surface)
193            return;
194    
195        /* get zoom */
196        gint zoom;
197        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
198    
199        /* ------- convert given coordinate into screen position --------- */
200        gint xs, ys;
201        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
202                                          priv->balloon.lat, priv->balloon.lon,
203                                          &xs, &ys);
204    
205        gint x0 = 1, y0 = 1;
206    
207        /* check position of this relative to screen center to determine */
208        /* pointer direction ... */
209        int pointer_x, pointer_x0, pointer_x1;
210        int pointer_y;
211    
212        /* ... and calculate position */
213        int orientation = 0;
214        if(xs > osd->widget->allocation.width/2) {
215            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
216            pointer_x = x0 - priv->balloon.offset_x;
217            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
218            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
219            orientation |= 1;
220        } else {
221            priv->balloon.offset_x = -POINTER_OFFSET;
222            pointer_x = x0 - priv->balloon.offset_x;
223            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
224            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
225        }
226    
227        gboolean bottom = FALSE;
228        if(ys > osd->widget->allocation.height/2) {
229            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
230            pointer_y = y0 - priv->balloon.offset_y;
231            bottom = TRUE;
232            orientation |= 2;
233        } else {
234            priv->balloon.offset_y = 0;
235            pointer_y = y0 - priv->balloon.offset_y;
236            y0 += POINTER_HEIGHT;
237        }
238    
239        /* if required orientation equals current one, then don't render */
240        /* anything */
241        if(orientation == priv->balloon.orientation)
242            return;
243    
244        priv->balloon.orientation = orientation;
245    
246        /* calculate bottom/right of box */
247        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
248    
249        /* save balloon screen coordinates for later use */
250        priv->balloon.rect.x = x0 + BALLOON_BORDER;
251        priv->balloon.rect.y = y0 + BALLOON_BORDER;
252        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
253        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
254    
255        g_assert(priv->balloon.surface);
256        cairo_t *cr = cairo_create(priv->balloon.surface);
257        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
258        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
259        cairo_paint(cr);
260        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
261    
262        /* --------- draw shadow --------------- */
263        osm_gps_map_draw_balloon_shape (cr,
264                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
265                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
266                     bottom, pointer_x, pointer_y,
267                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
268    
269        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
270        cairo_fill_preserve (cr);
271        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
272        cairo_set_line_width (cr, 0);
273        cairo_stroke (cr);
274    
275        /* --------- draw main shape ----------- */
276        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
277                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
278    
279        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
280        cairo_fill_preserve (cr);
281        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
282        cairo_set_line_width (cr, 1);
283        cairo_stroke (cr);
284    
285        if (priv->balloon.cb) {
286            osm_gps_map_balloon_event_t event;
287    
288            /* clip in case application tries to draw in */
289                /* exceed of the balloon */
290            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
291                             priv->balloon.rect.w, priv->balloon.rect.h);
292            cairo_clip (cr);
293            cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
294    
295            /* request the application to draw the balloon contents */
296            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
297            event.data.draw.rect = &priv->balloon.rect;
298            event.data.draw.cr = cr;
299    
300            priv->balloon.cb(&event, priv->balloon.data);
301        }
302    
303        cairo_destroy(cr);
304    
305        FOUT;
306    }
307    
308    /* return true if balloon is being displayed and if */
309    /* the given coordinate is within this balloon */
310    static gboolean
311    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y)
312    {
313        FIN;
314    
315        osd_priv_t *priv = (osd_priv_t*)osd->priv;
316    
317        if(!priv->balloon.surface)
318            return FALSE;
319    
320        gint xs, ys;
321        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
322                                          priv->balloon.lat, priv->balloon.lon,
323                                          &xs, &ys);
324    
325        xs += priv->balloon.rect.x + priv->balloon.offset_x;
326        ys += priv->balloon.rect.y + priv->balloon.offset_y;
327    
328        gboolean is_in =
329            (x > xs) && (x < xs + priv->balloon.rect.w) &&
330            (y > ys) && (y < ys + priv->balloon.rect.h);
331    
332        /* is this a real click or is the application just checking for something? */
333        if(click) {
334    
335            /* handle the fact that the balloon may have been created by the */
336            /* button down event */
337            if(!is_in && !down && !priv->balloon.just_created) {
338                /* the user actually clicked outside the balloon */
339    
340                /* close the balloon! */
341                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
342    
343                /* and inform application about this */
344                if(priv->balloon.cb) {
345                    osm_gps_map_balloon_event_t event;
346                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
347                    priv->balloon.cb(&event, priv->balloon.data);
348                }
349    
350            }
351    
352            if(is_in && priv->balloon.cb) {
353                osm_gps_map_balloon_event_t event;
354    
355                /* notify application of click */
356                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
357                event.data.click.x = x - xs;
358                event.data.click.y = y - ys;
359                event.data.click.down = down;
360    
361                priv->balloon.cb(&event, priv->balloon.data);
362            }
363        }
364        FOUT;
365        return is_in;
366    }
367    
368    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
369        FIN;
370    
371        g_return_if_fail (OSM_IS_GPS_MAP (map));
372    
373        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
374        g_return_if_fail (osd);
375    
376        osd_priv_t *priv = (osd_priv_t*)osd->priv;
377        g_return_if_fail (priv);
378    
379        if(priv->balloon.surface) {
380            cairo_surface_destroy(priv->balloon.surface);
381            priv->balloon.surface = NULL;
382            priv->balloon.lat = OSM_GPS_MAP_INVALID;
383            priv->balloon.lon = OSM_GPS_MAP_INVALID;
384        }
385        osm_gps_map_redraw(map);
386        FOUT;
387    }
388    
389    void
390    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
391                                  OsmGpsMapBalloonCallback cb, gpointer data) {
392        FIN;
393        g_return_if_fail (OSM_IS_GPS_MAP (map));
394    
395        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
396        g_return_if_fail (osd);
397    
398        osd_priv_t *priv = (osd_priv_t*)osd->priv;
399        g_return_if_fail (priv);
400    
401        osm_gps_map_osd_clear_balloon (map);
402    
403        /* allocate balloon surface */
404        priv->balloon.surface =
405            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
406                                       BALLOON_W+2, BALLOON_H+2);
407    
408        priv->balloon.lat = latitude;
409        priv->balloon.lon = longitude;
410        priv->balloon.cb = cb;
411        priv->balloon.data = data;
412        priv->balloon.just_created = TRUE;
413    
414        priv->balloon.orientation = -1;
415    
416        osd_render_balloon(osd);
417    
418        osm_gps_map_redraw(map);
419        FOUT;
420    }
421    
422    #endif // OSD_BALLOON
423    
424  /* position and extent of bounding box */  /* position and extent of bounding box */
425    #ifndef OSD_X
426  #define OSD_X      (10)  #define OSD_X      (10)
427    #endif
428    
429    #ifndef OSD_Y
430  #define OSD_Y      (10)  #define OSD_Y      (10)
431    #endif
432    
433  /* parameters of the direction shape */  /* parameters of the direction shape */
434  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
435  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
436  #else  #else
437  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
438  #endif  #endif
439  #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
440  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 71  typedef struct { Line 451  typedef struct {
451  #define OSD_SHADOW (0)  #define OSD_SHADOW (0)
452  #endif  #endif
453    
454    /* normally the GPS button is in the center of the dpad. if there's */
455    /* no dpad it will go into the zoom area */
456    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
457    #define Z_GPS  1
458    #else
459    #define Z_GPS  0
460    #endif
461    
462  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
463  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
464    #if !Z_GPS
465  #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)
466    #else
467    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
468    #endif
469    
470  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
471  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
472  #endif  #endif
473    
474  #define Z_TOP    (2 * D_RAD + Z_STEP)  #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
475    
476  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
477  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
478  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
479  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
480    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
481    
482  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
483  static void  static void
484  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
485  {  {
486      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
487      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 97  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 490  osm_gps_map_osd_zoom_shape(cairo_t *cr,
490      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);
491  }  }
492    
493    /* ------------------- color/shadow functions ----------------- */
494    
495    #ifndef OSD_COLOR
496    /* if no color has been specified we just use the gdks default colors */
497    static void
498    osd_labels(cairo_t *cr, gint width, gboolean enabled,
499                           GdkColor *fg, GdkColor *disabled) {
500        if(enabled)  gdk_cairo_set_source_color(cr, fg);
501        else         gdk_cairo_set_source_color(cr, disabled);
502        cairo_set_line_width (cr, width);
503    }
504    #else
505    static void
506    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
507        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
508        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
509        cairo_set_line_width (cr, width);
510    }
511    #endif
512    
513    #ifdef OSD_SHADOW_ENABLE
514    static void
515    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
516        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
517        cairo_set_line_width (cr, width);
518    }
519    #endif
520    
521    #ifndef OSD_NO_DPAD
522  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
523  static void  static void
524  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
525  {  {
526      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);
527  }  }
528    #endif
529    
530    #ifdef OSD_SHADOW_ENABLE
531    static void
532    osd_shape_shadow(cairo_t *cr) {
533        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
534        cairo_fill (cr);
535        cairo_stroke (cr);
536    }
537    #endif
538    
539    #ifndef OSD_COLOR
540    /* if no color has been specified we just use the gdks default colors */
541    static void
542    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
543        gdk_cairo_set_source_color(cr, bg);
544        cairo_fill_preserve (cr);
545        gdk_cairo_set_source_color(cr, fg);
546        cairo_set_line_width (cr, 1);
547        cairo_stroke (cr);
548    }
549    #else
550    static void
551    osd_shape(cairo_t *cr) {
552        cairo_set_source_rgb (cr, OSD_COLOR_BG);
553        cairo_fill_preserve (cr);
554        cairo_set_source_rgb (cr, OSD_COLOR);
555        cairo_set_line_width (cr, 1);
556        cairo_stroke (cr);
557    }
558    #endif
559    
560    
561  static gboolean  static gboolean
562  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)
563  {  {
564        FIN;
565      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
566  }  }
567    
568    #ifndef OSD_NO_DPAD
569  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
570  static osd_button_t  static osd_button_t
571  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
572  {  {
573      /* within entire dpad circle */      /* within entire dpad circle */
574      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))
575      {      {
576          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
577          x -= (OSD_X + D_RAD);          x -= D_RAD;
578          y -= (OSD_Y + D_RAD);          y -= D_RAD;
579    
580    #ifdef OSD_GPS_BUTTON
581          /* check for dpad center goes here! */          /* check for dpad center goes here! */
582          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))
583              return OSD_GPS;              return OSD_GPS;
584    #endif
585    
586          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
587              return OSD_UP;              return OSD_UP;
# Line 137  osm_gps_map_osd_check_dpad(gint x, gint Line 595  osm_gps_map_osd_check_dpad(gint x, gint
595          if( x > 0 && abs(y) < abs(x))          if( x > 0 && abs(y) < abs(x))
596              return OSD_RIGHT;              return OSD_RIGHT;
597    
598          return OSD_BG;          return OSD_BG;
599      }      }
600      return OSD_NONE;      return OSD_NONE;
601  }  }
602    #endif
603    
604    /* check whether x/y is within the zoom pads */
605    static osd_button_t
606    osd_check_zoom(gint x, gint y) {
607        if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
608    
609            /* within circle around (-) label */
610            if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD))
611                return OSD_OUT;
612    
613            /* within circle around (+) label */
614            if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD))
615                return OSD_IN;
616    
617    #if Z_GPS == 1
618            /* within square around center */
619            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
620                return OSD_GPS;
621    #endif
622    
623            /* between center of (-) button and center of entire zoom control area */
624            if(x > OSD_LEFT && x < D_RAD)
625                return OSD_OUT;
626    
627            /* between center of (+) button and center of entire zoom control area */
628            if(x < OSD_RIGHT && x > D_RAD)
629                return OSD_IN;
630        }
631    
632        return OSD_NONE;
633    }
634    
635    #ifdef OSD_SOURCE_SEL
636    
637    /* place source selection at right border */
638    #define OSD_S_RAD (Z_RAD)
639    #define OSD_S_X   (-OSD_X)
640    #define OSD_S_Y   (OSD_Y)
641    #define OSD_S_PW  (2 * Z_RAD)
642    #define OSD_S_W   (OSD_S_PW)
643    #define OSD_S_PH  (2 * Z_RAD)
644    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
645    
646    /* size of usable area when expanded */
647    #define OSD_S_AREA_W (priv->source_sel.width)
648    #define OSD_S_AREA_H (priv->source_sel.height)
649    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
650    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
651    
652    /* internal value to draw the arrow on the "puller" */
653    #define OSD_S_D0  (OSD_S_RAD/2)
654    #ifndef OSD_FONT_SIZE
655    #define OSD_FONT_SIZE (16.0)
656    #endif
657    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
658    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
659    
660    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
661    /* or the entire menu incl. the puller (expanded) */
662    static void
663    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
664        if(!priv->source_sel.expanded) {
665            /* just draw the puller */
666            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
667            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
668            cairo_line_to (cr, x + OSD_S_PW, y);
669        } else {
670            /* draw the puller and the area itself */
671            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
672            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
673            if(OSD_S_Y > 0) {
674                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
675                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
676            } else {
677                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
678                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
679                cairo_line_to (cr, x + OSD_S_PW, y);
680            }
681            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
682            cairo_close_path (cr);
683        }
684    }
685    
686    static void
687    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
688        osd_priv_t *priv = (osd_priv_t*)osd->priv;
689    
690        int py = offset + OSD_S_RAD - OSD_S_D0;
691    
692        if(!priv->source_sel.expanded) {
693            /* draw the "puller" open (<) arrow */
694            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
695            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
696            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
697        } else {
698            if(OSD_S_Y < 0)
699                py += OSD_S_AREA_H - OSD_S_PH;
700    
701            /* draw the "puller" close (>) arrow */
702            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
703            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
704            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
705            cairo_stroke(cr);
706    
707            /* don't draw a shadow for the text content */
708            if(offset == 1) {
709                gint source;
710                g_object_get(osd->widget, "map-source", &source, NULL);
711    
712                cairo_select_font_face (cr, "Sans",
713                                        CAIRO_FONT_SLANT_NORMAL,
714                                        CAIRO_FONT_WEIGHT_BOLD);
715                cairo_set_font_size (cr, OSD_FONT_SIZE);
716    
717                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
718                    OSM_GPS_MAP_SOURCE_LAST;
719                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
720                    cairo_text_extents_t extents;
721                    const char *src = osm_gps_map_source_get_friendly_name(i);
722                    cairo_text_extents (cr, src, &extents);
723    
724                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
725                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
726    
727                    /* draw filled rectangle if selected */
728                    if(source == i) {
729                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
730                                        y - OSD_TEXT_SKIP,
731                                        priv->source_sel.width - OSD_TEXT_BORDER,
732                                        step + OSD_TEXT_SKIP);
733                        cairo_fill(cr);
734    
735                        /* temprarily draw with background color */
736    #ifndef OSD_COLOR
737                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
738                        gdk_cairo_set_source_color(cr, &bg);
739    #else
740                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
741    #endif
742                    }
743    
744                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
745                    cairo_show_text (cr, src);
746    
747                    /* restore color */
748                    if(source == i) {
749    #ifndef OSD_COLOR
750                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
751                        gdk_cairo_set_source_color(cr, &fg);
752    #else
753                        cairo_set_source_rgb (cr, OSD_COLOR);
754    #endif
755                    }
756                }
757            }
758        }
759    }
760    
761    static void
762    osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
763        FIN;
764    
765        osd_priv_t *priv = (osd_priv_t*)osd->priv;
766    
767        if(!priv->source_sel.surface ||
768           (priv->source_sel.rendered && !force_rerender))
769            return;
770    
771        priv->source_sel.rendered = TRUE;
772    
773    #ifndef OSD_COLOR
774        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
775        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
776        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
777    #endif
778    
779        /* draw source selector */
780        g_assert(priv->source_sel.surface);
781        cairo_t *cr = cairo_create(priv->source_sel.surface);
782        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
783        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
784        cairo_paint(cr);
785        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
786    
787    #ifdef OSD_SHADOW_ENABLE
788        osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
789        osd_shape_shadow(cr);
790    #endif
791    
792        osd_source_shape(priv, cr, 1, 1);
793    #ifndef OSD_COLOR
794        osd_shape(cr, &bg, &fg);
795    #else
796        osd_shape(cr);
797    #endif
798    
799    #ifdef OSD_SHADOW_ENABLE
800        osd_labels_shadow(cr, Z_RAD/3, TRUE);
801        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
802        cairo_stroke (cr);
803    #endif
804    #ifndef OSD_COLOR
805        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
806    #else
807        osd_labels(cr, Z_RAD/3, TRUE);
808    #endif
809        osd_source_content(osd, cr, 1);
810        cairo_stroke (cr);
811    
812        cairo_destroy(cr);
813        FOUT;
814    }
815    
816    /* re-allocate the buffer used to draw the menu. This is used */
817    /* to collapse/expand the buffer */
818    static void
819    osd_source_reallocate(osm_gps_map_osd_t *osd) {
820        FIN;
821        osd_priv_t *priv = (osd_priv_t*)osd->priv;
822    
823        /* re-allocate offscreen bitmap */
824        g_assert (priv->source_sel.surface);
825    
826        int w = OSD_S_W, h = OSD_S_H;
827        if(priv->source_sel.expanded) {
828            cairo_text_extents_t extents;
829    
830            /* determine content size */
831            g_assert(priv->source_sel.surface);
832            cairo_t *cr = cairo_create(priv->source_sel.surface);
833            cairo_select_font_face (cr, "Sans",
834                                    CAIRO_FONT_SLANT_NORMAL,
835                                    CAIRO_FONT_WEIGHT_BOLD);
836            cairo_set_font_size (cr, OSD_FONT_SIZE);
837    
838            /* calculate menu size */
839            int i, max_h = 0, max_w = 0;
840            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
841                const char *src = osm_gps_map_source_get_friendly_name(i);
842                cairo_text_extents (cr, src, &extents);
843    
844                if(extents.width > max_w) max_w = extents.width;
845                if(extents.height > max_h) max_h = extents.height;
846            }
847            cairo_destroy(cr);
848    
849            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
850            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
851                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
852    
853            w = OSD_S_EXP_W;
854            h = OSD_S_EXP_H;
855        }
856    
857        cairo_surface_destroy(priv->source_sel.surface);
858        priv->source_sel.surface =
859            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
860    
861        osd_render_source_sel(osd, TRUE);
862        FOUT;
863    }
864    
865    #define OSD_HZ      15
866    #define OSD_TIME    500
867    
868    static gboolean osd_source_animate(gpointer data) {
869        FIN;
870        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
871        osd_priv_t *priv = (osd_priv_t*)osd->priv;
872        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
873        gboolean done = FALSE;
874        priv->source_sel.count += priv->source_sel.dir;
875    
876        /* shifting in */
877        if(priv->source_sel.dir < 0) {
878            if(priv->source_sel.count <= 0) {
879                priv->source_sel.count = 0;
880                done = TRUE;
881            }
882        } else {
883            if(priv->source_sel.count >= 1000) {
884                priv->source_sel.expanded = FALSE;
885                osd_source_reallocate(osd);
886    
887                priv->source_sel.count = 1000;
888                done = TRUE;
889            }
890        }
891    
892    
893        /* count runs linearly from 0 to 1000, map this nicely onto a position */
894    
895        /* nice sinoid mapping */
896        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
897        priv->source_sel.shift =
898            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
899            m * diff;
900    
901        /* make sure the screen is updated */
902        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
903    
904        /* stop animation if done */
905        if(done)
906            priv->source_sel.handler_id = 0;
907    
908        FOUT;
909        return !done;
910    }
911    
912    /* switch between expand and collapse mode of source selection */
913    static void
914    osd_source_toggle(osm_gps_map_osd_t *osd)
915    {
916        FIN;
917        osd_priv_t *priv = (osd_priv_t*)osd->priv;
918    
919        /* ignore clicks while animation is running */
920        if(priv->source_sel.handler_id)
921            return;
922    
923        /* expand immediately, collapse is handle at the end of the */
924        /* collapse animation */
925        if(!priv->source_sel.expanded) {
926            priv->source_sel.expanded = TRUE;
927            osd_source_reallocate(osd);
928    
929            priv->source_sel.count = 1000;
930            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
931            priv->source_sel.dir = -1000/OSD_HZ;
932        } else {
933            priv->source_sel.count =  0;
934            priv->source_sel.shift = osd->widget->allocation.width -
935                OSD_S_EXP_W + OSD_S_X;
936            priv->source_sel.dir = +1000/OSD_HZ;
937        }
938    
939        /* start timer to handle animation */
940        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
941                                                      osd_source_animate, osd);
942        FOUT;
943    }
944    
945    /* check if the user clicked inside the source selection area */
946    static osd_button_t
947    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
948        FIN;
949        osd_priv_t *priv = (osd_priv_t*)osd->priv;
950    
951        if(!priv->source_sel.expanded)
952            x -= osd->widget->allocation.width - OSD_S_W;
953        else
954            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
955    
956        if(OSD_S_Y > 0)
957            y -= OSD_S_Y;
958        else
959            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
960    
961        /* within square around puller? */
962        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
963            /* really within puller shape? */
964            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
965                /* expand source selector */
966                if(down)
967                    osd_source_toggle(osd);
968    
969                /* tell upper layers that user clicked some background element */
970                /* of the OSD */
971                return OSD_BG;
972            }
973        }
974    
975        /* check for clicks into data area */
976        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
977            /* re-adjust from puller top to content top */
978            if(OSD_S_Y < 0)
979                y += OSD_S_EXP_H - OSD_S_PH;
980    
981            if(x > OSD_S_PW &&
982               x < OSD_S_PW + OSD_S_EXP_W &&
983               y > 0 &&
984               y < OSD_S_EXP_H) {
985    
986                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
987                    / OSM_GPS_MAP_SOURCE_LAST;
988    
989                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
990                y /= step;
991                y += 1;
992    
993                if(down) {
994                    gint old = 0;
995                    g_object_get(osd->widget, "map-source", &old, NULL);
996    
997                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
998                       y <= OSM_GPS_MAP_SOURCE_LAST &&
999                       old != y) {
1000                        g_object_set(osd->widget, "map-source", y, NULL);
1001    
1002                        osd_render_source_sel(osd, TRUE);
1003                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
1004                    }
1005                }
1006    
1007                /* return "clicked in OSD background" to prevent further */
1008                /* processing by application */
1009                return OSD_BG;
1010            }
1011        }
1012    
1013        FOUT;
1014        return OSD_NONE;
1015    }
1016    #endif // OSD_SOURCE_SEL
1017    
1018    #ifndef OSD_NO_DPAD
1019    static void
1020    osd_dpad_labels(cairo_t *cr, gint x, gint y) {
1021        /* move reference to dpad center */
1022        x += D_RAD;
1023        y += D_RAD;
1024    
1025        const static gint offset[][3][2] = {
1026            /* left arrow/triangle */
1027            { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } },
1028            /* right arrow/triangle */
1029            { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } },
1030            /* top arrow/triangle */
1031            { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } },
1032            /* bottom arrow/triangle */
1033            { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } }
1034        };
1035    
1036        int i;
1037        for(i=0;i<4;i++) {
1038            cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);
1039            cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);
1040            cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
1041        }
1042    }
1043    #endif
1044    
1045    #ifdef OSD_GPS_BUTTON
1046    /* draw the satellite dish icon in the center of the dpad */
1047    #define GPS_V0  (D_RAD/7)
1048    #define GPS_V1  (D_RAD/10)
1049    #define GPS_V2  (D_RAD/5)
1050    
1051    /* draw a satellite receiver dish */
1052    /* this is either drawn in the center of the dpad (if present) */
1053    /* or in the middle of the zoom area */
1054    static void
1055    osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1056        /* move reference to dpad center */
1057        x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1058        y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
1059    
1060        cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1061        cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
1062        cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);
1063        cairo_close_path (cr);
1064    
1065        cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);
1066        cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);
1067        cairo_close_path (cr);
1068    
1069        x += GPS_V1;
1070        cairo_move_to (cr, x, y-GPS_V2);
1071        cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1072    }
1073    #endif
1074    
1075    #define Z_LEN  (2*Z_RAD/3)
1076    
1077    static void
1078    osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1079        cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1080        cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1081    
1082        cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);
1083        cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);
1084        cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);
1085        cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1086    }
1087    
1088    #ifdef OSD_COORDINATES
1089    
1090    #ifndef OSD_COORDINATES_FONT_SIZE
1091    #define OSD_COORDINATES_FONT_SIZE (12.0)
1092    #endif
1093    
1094    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1095    
1096    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1097    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1098    
1099    /* these can be overwritten with versions that support */
1100    /* localization */
1101    #ifndef OSD_COORDINATES_CHR_N
1102    #define OSD_COORDINATES_CHR_N  "N"
1103    #endif
1104    #ifndef OSD_COORDINATES_CHR_S
1105    #define OSD_COORDINATES_CHR_S  "S"
1106    #endif
1107    #ifndef OSD_COORDINATES_CHR_E
1108    #define OSD_COORDINATES_CHR_E  "E"
1109    #endif
1110    #ifndef OSD_COORDINATES_CHR_W
1111    #define OSD_COORDINATES_CHR_W  "W"
1112    #endif
1113    
1114    
1115    
1116    /* this is the classic geocaching notation */
1117    static char
1118    *osd_latitude_str(float latitude) {
1119        char *c = OSD_COORDINATES_CHR_N;
1120        float integral, fractional;
1121    
1122        if(isnan(latitude))
1123            return NULL;
1124    
1125        if(latitude < 0) {
1126            latitude = fabs(latitude);
1127            c = OSD_COORDINATES_CHR_S;
1128        }
1129    
1130        fractional = modff(latitude, &integral);
1131    
1132        return g_strdup_printf("%s %02d° %06.3f'",
1133                               c, (int)integral, fractional*60.0);
1134    }
1135    
1136    static char
1137    *osd_longitude_str(float longitude) {
1138        char *c = OSD_COORDINATES_CHR_E;
1139        float integral, fractional;
1140    
1141        if(isnan(longitude))
1142            return NULL;
1143    
1144        if(longitude < 0) {
1145            longitude = fabs(longitude);
1146            c = OSD_COORDINATES_CHR_W;
1147        }
1148    
1149        fractional = modff(longitude, &integral);
1150    
1151        return g_strdup_printf("%s %03d° %06.3f'",
1152                               c, (int)integral, fractional*60.0);
1153    }
1154    
1155    /* render a string at the given screen position */
1156    static int
1157    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1158        FIN;
1159    
1160        if(!text) return y;
1161    
1162        char *p = g_malloc(strlen(text)+4);  // space for "...\n"
1163        strcpy(p, text);
1164    
1165        cairo_text_extents_t extents;
1166        memset(&extents, 0, sizeof(cairo_text_extents_t));
1167        cairo_text_extents (cr, p, &extents);
1168        g_assert(extents.width != 0.0);
1169    
1170        /* check if text needs to be truncated */
1171        int trunc_at = strlen(text);
1172        while(extents.width > width) {
1173    
1174            /* cut off all utf8 multibyte remains so the actual */
1175            /* truncation only deals with one byte */
1176            while((p[trunc_at-1] & 0xc0) == 0x80) {
1177                trunc_at--;
1178                g_assert(trunc_at > 0);
1179            }
1180    
1181            trunc_at--;
1182            g_assert(trunc_at > 0);
1183    
1184            strcpy(p+trunc_at, "...");
1185            cairo_text_extents (cr, p, &extents);
1186        }
1187    
1188        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1189        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1190        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1191        cairo_text_path (cr, p);
1192        cairo_stroke (cr);
1193    
1194        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1195        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1196        cairo_show_text (cr, p);
1197    
1198        g_free(p);
1199    
1200        /* skip + 1/5 line */
1201        FOUT;
1202        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1203    }
1204    
1205    static void
1206    osd_render_coordinates(osm_gps_map_osd_t *osd)
1207    {
1208        FIN;
1209        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1210    
1211        if(!priv->coordinates.surface)
1212            return;
1213    
1214        /* get current map position */
1215        gfloat lat, lon;
1216        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1217    
1218        /* check if position has changed enough to require redraw */
1219        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1220            /* 1/60000 == 1/1000 minute */
1221            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1222               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1223                return;
1224    
1225        priv->coordinates.lat = lat;
1226        priv->coordinates.lon = lon;
1227    
1228        /* first fill with transparency */
1229    
1230        g_assert(priv->coordinates.surface);
1231        cairo_t *cr = cairo_create(priv->coordinates.surface);
1232        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1233        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1234        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1235        cairo_paint(cr);
1236        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1237    
1238        cairo_select_font_face (cr, "Sans",
1239                                CAIRO_FONT_SLANT_NORMAL,
1240                                CAIRO_FONT_WEIGHT_BOLD);
1241        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1242    
1243        char *latitude = osd_latitude_str(lat);
1244        char *longitude = osd_longitude_str(lon);
1245    
1246        int y = OSD_COORDINATES_OFFSET;
1247        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1248        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1249    
1250        g_free(latitude);
1251        g_free(longitude);
1252    
1253        cairo_destroy(cr);
1254        FOUT;
1255    }
1256    #endif  // OSD_COORDINATES
1257    
1258    #ifdef OSD_NAV
1259    #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1260    #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1261    
1262    /* http://mathforum.org/library/drmath/view/55417.html */
1263    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1264      return atan2( sin(lon2 - lon1) * cos(lat2),
1265                    cos(lat1) * sin(lat2) -
1266                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1267    }
1268    
1269    /* http://mathforum.org/library/drmath/view/51722.html */
1270    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1271      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1272                       sin(lat1) * sin(lat2));
1273    
1274      //  return(aob * 3959.0);   /* great circle radius in miles */
1275    
1276      return(aob * 6371000.0);     /* great circle radius in meters */
1277    }
1278    
1279    static void
1280    osd_render_nav(osm_gps_map_osd_t *osd)
1281    {
1282        FIN;
1283        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1284    
1285        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1286            return;
1287    
1288        /* first fill with transparency */
1289        g_assert(priv->nav.surface);
1290        cairo_t *cr = cairo_create(priv->nav.surface);
1291        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1292        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1293        cairo_paint(cr);
1294        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1295    
1296        cairo_select_font_face (cr, "Sans",
1297                                CAIRO_FONT_SLANT_NORMAL,
1298                                CAIRO_FONT_WEIGHT_BOLD);
1299        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1300    
1301        char *latitude = osd_latitude_str(priv->nav.lat);
1302        char *longitude = osd_longitude_str(priv->nav.lon);
1303    
1304        int y = OSD_COORDINATES_OFFSET;
1305        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1306        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1307        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1308    
1309        g_free(latitude);
1310        g_free(longitude);
1311    
1312        /* draw the compass */
1313        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1314        if(radius > OSD_NAV_W/2)
1315            radius = OSD_NAV_W/2;
1316    
1317        int x = OSD_NAV_W/2+1;
1318        y += radius;
1319    
1320        cairo_stroke (cr);
1321    
1322        /* draw background */
1323        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1324        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1325        cairo_fill_preserve (cr);
1326        cairo_set_source_rgb (cr, 0, 0, 0);
1327        cairo_set_line_width (cr, 1);
1328        cairo_stroke (cr);
1329    
1330        /* draw pointer */
1331    #define ARROW_WIDTH     0.3
1332    #define ARROW_LENGTH    0.7
1333    
1334        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1335        if(gps) {
1336            float arot = get_bearing(gps->rlat, gps->rlon,
1337                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1338    
1339            cairo_move_to(cr,
1340                          x + radius *  ARROW_LENGTH *  sin(arot),
1341                          y + radius *  ARROW_LENGTH * -cos(arot));
1342    
1343            cairo_line_to(cr,
1344                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1345                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1346    
1347            cairo_line_to(cr,
1348                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1349                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1350    
1351            cairo_line_to(cr,
1352                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1353                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1354    
1355            cairo_close_path(cr);
1356            cairo_set_source_rgb (cr, 0, 0, 0);
1357            cairo_fill (cr);
1358    
1359            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1360    
1361            float dist = get_distance(gps->rlat, gps->rlon,
1362                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1363    
1364            char *dist_str = NULL;
1365            if(!priv->nav.imperial) {
1366                /* metric is easy ... */
1367                if(dist<1000)
1368                    dist_str = g_strdup_printf("%u m", (int)dist);
1369                else
1370                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1371            } else {
1372                /* and now the hard part: scale for useful imperial values :-( */
1373                /* try to convert to feet, 1ft == 0.3048 m */
1374    
1375                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1376                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1377                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1378                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1379                else
1380                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1381            }
1382    
1383            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1384            g_free(dist_str);
1385        }
1386    
1387        cairo_destroy(cr);
1388        FOUT;
1389    }
1390    
1391    /* check if the user clicked inside the source selection area */
1392    static osd_button_t
1393    osd_nav_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
1394        FIN;
1395        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1396    
1397        if(!priv->nav.surface || down)
1398            return OSD_NONE;
1399    
1400        x -= OSD_X;
1401        if(OSD_X < 0)
1402            x -= (osd->widget->allocation.width - OSD_NAV_W);
1403    
1404        y -= (osd->widget->allocation.height - OSD_NAV_H)/2;
1405    
1406        if(x >= 0 && y >= 0 && x <= OSD_NAV_W && y <= OSD_NAV_H) {
1407            osm_gps_map_set_center(OSM_GPS_MAP(osd->widget),
1408                                   priv->nav.lat, priv->nav.lon);
1409        }
1410    
1411        FOUT;
1412        return OSD_NONE;
1413    }
1414    
1415    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1416        FIN;
1417        g_return_if_fail (OSM_IS_GPS_MAP (map));
1418    
1419        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1420        g_return_if_fail (osd);
1421    
1422        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1423        g_return_if_fail (priv);
1424    
1425        if(priv->nav.surface) {
1426            cairo_surface_destroy(priv->nav.surface);
1427            priv->nav.surface = NULL;
1428            priv->nav.lat = OSM_GPS_MAP_INVALID;
1429            priv->nav.lon = OSM_GPS_MAP_INVALID;
1430            if(priv->nav.name) g_free(priv->nav.name);
1431        }
1432        osm_gps_map_redraw(map);
1433        FOUT;
1434    }
1435    
1436    void
1437    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1438                              float latitude, float longitude, char *name) {
1439        FIN;
1440        g_return_if_fail (OSM_IS_GPS_MAP (map));
1441    
1442        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1443        g_return_if_fail (osd);
1444    
1445        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1446        g_return_if_fail (priv);
1447    
1448  /* check whether x/y is within the zoom pads */      osm_gps_map_osd_clear_nav (map);
 static osd_button_t  
 osm_gps_map_osd_check_zoom(gint x, gint y) {  
     if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {  
1449    
1450          /* within circle around (-) label */      /* allocate balloon surface */
1451          if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))      priv->nav.surface =
1452              return OSD_OUT;          cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1453                                       OSD_NAV_W+2, OSD_NAV_H+2);
1454    
1455          /* between center of (-) button and center of entire zoom control area */      priv->nav.lat = latitude;
1456          if(x > OSD_LEFT && x < OSD_X + D_RAD)      priv->nav.lon = longitude;
1457              return OSD_OUT;      priv->nav.name = g_strdup(name);
1458        priv->nav.imperial = imperial;
1459    
1460          /* within circle around (+) label */      osd_render_nav(osd);
         if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))  
             return OSD_IN;  
1461    
1462          /* between center of (+) button and center of entire zoom control area */      osm_gps_map_redraw(map);
1463          if(x < OSD_RIGHT && x > OSD_X + D_RAD)      FOUT;
             return OSD_IN;  
     }  
   
     return OSD_NONE;  
1464  }  }
1465    
1466    #endif // OSD_NAV
1467    
1468  static osd_button_t  static osd_button_t
1469  osm_gps_map_osd_check(gint x, gint y) {  osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) {
1470        FIN;
1471      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
1472    
1473      /* first do a rough test for the OSD area. */  #ifdef OSD_BALLOON
1474      /* this is just to avoid an unnecessary detailed test */      if(down) {
1475      if(x > OSD_X && x < OSD_X + OSD_W &&          /* needed to handle balloons that are created at click */
1476         y > OSD_Y && y < OSD_Y + OSD_H) {          osd_priv_t *priv = (osd_priv_t*)osd->priv;
1477          but = osm_gps_map_osd_check_dpad(x, y);          priv->balloon.just_created = FALSE;
1478        }
1479    #endif
1480    
1481    #ifdef OSD_SOURCE_SEL
1482        /* the source selection area is handles internally */
1483        but = osd_source_check(osd, down, x, y);
1484    #endif
1485    
1486    #ifdef OSD_NAV
1487        if(but == OSD_NONE) {
1488            /* the source selection area is handles internally */
1489            but = osd_nav_check(osd, down, x, y);
1490        }
1491    #endif
1492    
1493        if(but == OSD_NONE) {
1494            gint mx = x - OSD_X;
1495            gint my = y - OSD_Y;
1496    
1497            if(OSD_X < 0)
1498                mx -= (osd->widget->allocation.width - OSD_W);
1499    
1500            if(OSD_Y < 0)
1501                my -= (osd->widget->allocation.height - OSD_H);
1502    
1503            /* first do a rough test for the OSD area. */
1504            /* this is just to avoid an unnecessary detailed test */
1505            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
1506    #ifndef OSD_NO_DPAD
1507                but = osd_check_dpad(mx, my);
1508    #endif
1509            }
1510    
1511          if(but == OSD_NONE)          if(but == OSD_NONE)
1512              but = osm_gps_map_osd_check_zoom(x, y);              but = osd_check_zoom(mx, my);
1513      }      }
1514    
1515    #ifdef OSD_BALLOON
1516        if(but == OSD_NONE) {
1517            /* check if user clicked into balloon */
1518            if(osd_balloon_check(osd, click, down, x, y))
1519                but = OSD_BG;
1520        }
1521    #endif
1522    
1523        FOUT;
1524      return but;      return but;
1525  }  }
1526    
1527  #ifdef OSD_SHADOW_ENABLE  
1528  static void  #ifdef OSD_CROSSHAIR
1529  osm_gps_map_osd_shape_shadow(cairo_t *cr) {  
1530      cairo_set_source_rgba (cr, 0, 0, 0, 0.2);  #ifndef OSD_CROSSHAIR_RADIUS
1531      cairo_fill (cr);  #define OSD_CROSSHAIR_RADIUS 10
     cairo_stroke (cr);  
 }  
1532  #endif  #endif
1533    
1534  #ifndef OSD_COLOR  #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1535  /* if no color has been specified we just use the gdks default colors */  #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1536  static void  #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1537  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {  #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1538      gdk_cairo_set_source_color(cr, bg);  
1539      cairo_fill_preserve (cr);  static void
1540      gdk_cairo_set_source_color(cr, fg);  osd_render_crosshair_shape(cairo_t *cr) {
1541      cairo_set_line_width (cr, 1);      FIN;
1542      cairo_stroke (cr);      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1543  }                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1544  #else  
1545  static void      cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1546  osm_gps_map_osd_shape(cairo_t *cr) {                     OSD_CROSSHAIR_H/2);
1547      cairo_set_source_rgb (cr, OSD_COLOR_BG);      cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1548      cairo_fill_preserve (cr);      cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1549      cairo_set_source_rgb (cr, OSD_COLOR);                     OSD_CROSSHAIR_H/2);
1550      cairo_set_line_width (cr, 1);      cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1551    
1552        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1553                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1554        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1555        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1556                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1557        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1558    
1559      cairo_stroke (cr);      cairo_stroke (cr);
1560        FOUT;
1561  }  }
 #endif  
1562    
1563  static void  static void
1564  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
1565      /* move reference to dpad center */  {
1566      x += D_RAD;      FIN;
1567      y += D_RAD;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1568    
1569      const static gint offset[][3][2] = {      if(!priv->crosshair.surface || priv->crosshair.rendered)
1570          /* left arrow/triangle */          return;
         { { -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 } }  
     };  
1571    
1572      int i;      priv->crosshair.rendered = TRUE;
1573      for(i=0;i<4;i++) {  
1574          cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);      /* first fill with transparency */
1575          cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);      g_assert(priv->crosshair.surface);
1576          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);      cairo_t *cr = cairo_create(priv->crosshair.surface);
1577      }      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1578        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1579        cairo_paint(cr);
1580        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1581    
1582        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1583    
1584        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1585        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1586        osd_render_crosshair_shape(cr);
1587    
1588        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1589        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1590        osd_render_crosshair_shape(cr);
1591    
1592        cairo_destroy(cr);
1593        FOUT;
1594  }  }
1595    #endif
1596    
1597  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_SCALE
1598  #define GPS_V0  (D_RAD/8)  
1599  #define GPS_V1  (D_RAD/10)  #ifndef OSD_SCALE_FONT_SIZE
1600  #define GPS_V2  (D_RAD/5)  #define OSD_SCALE_FONT_SIZE (12.0)
1601    #endif
1602    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1603    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1604    
1605    /* various parameters used to create the scale */
1606    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1607    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1608    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1609    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1610    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1611    
 /* draw a satellite receiver dish */  
1612  static void  static void
1613  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_render_scale(osm_gps_map_osd_t *osd)
1614      /* move reference to dpad center */  {
1615      x += D_RAD;      FIN;
1616      y += D_RAD + GPS_V0;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1617    
1618      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      if(!priv->scale.surface)
1619      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);          return;
     cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);  
     cairo_close_path (cr);  
1620    
1621      cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);      /* this only needs to be rendered if the zoom has changed */
1622      cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);      gint zoom;
1623      cairo_close_path (cr);      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1624        if(zoom == priv->scale.zoom)
1625            return;
1626    
1627      x += GPS_V1;      priv->scale.zoom = zoom;
     cairo_move_to (cr, x, y-GPS_V2);  
     cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);  
 }  
1628    
1629  #define Z_LEN  (2*Z_RAD/3)      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1630    
1631  static void      /* first fill with transparency */
1632  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {      g_assert(priv->scale.surface);
1633      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_t *cr = cairo_create(priv->scale.surface);
1634      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1635        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1636        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1637        cairo_paint(cr);
1638        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1639    
1640      cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);      /* determine the size of the scale width in meters */
1641      cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);      float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1642      cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);  
1643      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      /* scale this to useful values */
1644  }      int exp = logf(width)*M_LOG10E;
1645        int mant = width/pow(10,exp);
1646        int width_metric = mant * pow(10,exp);
1647        char *dist_str = NULL;
1648        if(width_metric<1000)
1649            dist_str = g_strdup_printf("%u m", width_metric);
1650        else
1651            dist_str = g_strdup_printf("%u km", width_metric/1000);
1652        width_metric /= m_per_pix;
1653    
1654        /* and now the hard part: scale for useful imperial values :-( */
1655        /* try to convert to feet, 1ft == 0.3048 m */
1656        width /= 0.3048;
1657        float imp_scale = 0.3048;
1658        char *dist_imp_unit = "ft";
1659    
1660        if(width >= 100) {
1661            /* 1yd == 3 feet */
1662            width /= 3.0;
1663            imp_scale *= 3.0;
1664            dist_imp_unit = "yd";
1665    
1666            if(width >= 1760.0) {
1667                /* 1mi == 1760 yd */
1668                width /= 1760.0;
1669                imp_scale *= 1760.0;
1670                dist_imp_unit = "mi";
1671            }
1672        }
1673    
1674  #ifndef OSD_COLOR      /* also convert this to full tens/hundreds */
1675  /* if no color has been specified we just use the gdks default colors */      exp = logf(width)*M_LOG10E;
1676  static void      mant = width/pow(10,exp);
1677  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,      int width_imp = mant * pow(10,exp);
1678                         GdkColor *fg, GdkColor *disabled) {      char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1679      if(enabled)  gdk_cairo_set_source_color(cr, fg);  
1680      else         gdk_cairo_set_source_color(cr, disabled);      /* convert back to pixels */
1681      cairo_set_line_width (cr, width);      width_imp *= imp_scale;
1682        width_imp /= m_per_pix;
1683    
1684        cairo_select_font_face (cr, "Sans",
1685                                CAIRO_FONT_SLANT_NORMAL,
1686                                CAIRO_FONT_WEIGHT_BOLD);
1687        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1688        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1689    
1690        cairo_text_extents_t extents;
1691        cairo_text_extents (cr, dist_str, &extents);
1692    
1693        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1694        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1695        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1696        cairo_text_path (cr, dist_str);
1697      cairo_stroke (cr);      cairo_stroke (cr);
1698  }      cairo_move_to (cr, 2*OSD_SCALE_FD,
1699  #else                     OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1700  static void      cairo_text_path (cr, dist_str_imp);
 osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  
     if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  
     else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);  
     cairo_set_line_width (cr, width);  
1701      cairo_stroke (cr);      cairo_stroke (cr);
 }  
 #endif  
1702    
1703  #ifdef OSD_SHADOW_ENABLE      cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1704  static void      cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1705  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {      cairo_show_text (cr, dist_str);
1706      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);      cairo_move_to (cr, 2*OSD_SCALE_FD,
1707      cairo_set_line_width (cr, width);                     OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1708      cairo_stroke (cr);      cairo_show_text (cr, dist_str_imp);
1709    
1710        g_free(dist_str);
1711        g_free(dist_str_imp);
1712    
1713        /* draw white line */
1714        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1715        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1716        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1717        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1718        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1719        cairo_rel_line_to (cr, width_metric, 0);
1720        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1721        cairo_stroke(cr);
1722        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1723        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1724        cairo_rel_line_to (cr, width_imp, 0);
1725        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1726        cairo_stroke(cr);
1727    
1728        /* draw black line */
1729        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1730        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1731        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1732        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1733        cairo_rel_line_to (cr, width_metric, 0);
1734        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1735        cairo_stroke(cr);
1736        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1737        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1738        cairo_rel_line_to (cr, width_imp, 0);
1739        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1740        cairo_stroke(cr);
1741    
1742        cairo_destroy(cr);
1743        FOUT;
1744  }  }
1745  #endif  #endif
1746    
1747  static void  static void
1748  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_controls(osm_gps_map_osd_t *osd)
1749    {
1750        FIN;
1751      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1752    
1753        if(!priv->controls.surface)
1754            return;
1755    
1756        if(priv->controls.rendered
1757    #ifdef OSD_GPS_BUTTON
1758           && (priv->controls.gps_enabled == (osd->cb != NULL))
1759    #endif
1760           )
1761            return;
1762    
1763    #ifdef OSD_GPS_BUTTON
1764        priv->controls.gps_enabled = (osd->cb != NULL);
1765    #endif
1766        priv->controls.rendered = TRUE;
1767    
1768    #ifndef OSD_COLOR
1769        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1770        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1771        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1772    #endif
1773    
1774      /* first fill with transparency */      /* first fill with transparency */
1775      cairo_t *cr = cairo_create(priv->overlay);      g_assert(priv->controls.surface);
1776        cairo_t *cr = cairo_create(priv->controls.surface);
1777      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1778      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1779      cairo_paint(cr);      cairo_paint(cr);
   
1780      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1781    
1782      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1783  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1784      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1785      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1786      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);  #ifndef OSD_NO_DPAD
1787      osm_gps_map_osd_shape_shadow(cr);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1788        osd_shape_shadow(cr);
1789    #endif
1790  #endif  #endif
1791    
1792      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1793    
1794      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1795  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1796      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1797  #else  #else
1798      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1799  #endif  #endif
1800      osm_gps_map_osd_dpad_shape(cr, x, y);  #ifndef OSD_NO_DPAD
1801        osd_dpad_shape(cr, 1, 1);
1802  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1803      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1804  #else  #else
1805      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1806    #endif
1807  #endif  #endif
1808    
1809      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1810    
1811  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1812      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1813      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1814      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #ifndef OSD_NO_DPAD
1815      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1816      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  #endif
1817        cairo_stroke(cr);
1818    #ifdef OSD_GPS_BUTTON
1819        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1820        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1821        cairo_stroke(cr);
1822    #endif
1823  #endif  #endif
1824    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
1825  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1826      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1827  #else  #else
1828      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1829  #endif  #endif
1830      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_zoom_labels(cr, 1, 1);
1831    #ifndef OSD_NO_DPAD
1832        osd_dpad_labels(cr, 1, 1);
1833    #endif
1834        cairo_stroke(cr);
1835    
1836  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1837      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1838  #else  #else
1839      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1840  #endif  #endif
1841    #ifdef OSD_GPS_BUTTON
1842        osd_dpad_gps(cr, 1, 1);
1843    #endif
1844        cairo_stroke(cr);
1845    
1846      cairo_destroy(cr);      cairo_destroy(cr);
1847  }  }
1848    
1849  static void  static void
1850  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset)  osd_render(osm_gps_map_osd_t *osd)
1851  {  {
1852      osd_priv_t *priv = (osd_priv_t*)osd->priv;      /* this function is actually called pretty often since the */
1853        /* OSD contents may have changed (due to a coordinate/zoom change). */
1854        /* The different OSD parts have to make sure that they don't */
1855        /* render unneccessarily often and thus waste CPU power */
1856    
1857      /* backup previous contents */      osd_render_controls(osd);
     if(!priv->backup)  
         priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1);  
1858    
1859      gint x = OSD_X + xoffset;  #ifdef OSD_SOURCE_SEL
1860      gint y = OSD_Y + yoffset;      osd_render_source_sel(osd, FALSE);
1861    #endif
1862    
1863    #ifdef OSD_SCALE
1864        osd_render_scale(osd);
1865    #endif
1866    
1867    #ifdef OSD_CROSSHAIR
1868        osd_render_crosshair(osd);
1869    #endif
1870    
1871    #ifdef OSD_NAV
1872        osd_render_nav(osd);
1873    #endif
1874    
1875      /* create backup of background */  #ifdef OSD_COORDINATES
1876      gdk_draw_drawable(priv->backup,      osd_render_coordinates(osd);
1877          osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  #endif
1878                        osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);  }
1879    
1880      priv->backup_x = x-1;  static void
1881      priv->backup_y = y-1;  osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1882    {
1883        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1884    
1885      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1886      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1887      if(!priv->overlay) {      if(!priv->controls.surface) {
1888          /* create overlay ... */          /* create overlay ... */
1889          priv->overlay =          priv->controls.surface =
1890              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1891    
1892            priv->controls.rendered = FALSE;
1893    #ifdef OSD_GPS_BUTTON
1894            priv->controls.gps_enabled = FALSE;
1895    #endif
1896    
1897    #ifdef OSD_SOURCE_SEL
1898            /* the initial OSD state is alway not-expanded */
1899            priv->source_sel.surface =
1900                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1901                                               OSD_S_W+2, OSD_S_H+2);
1902            priv->source_sel.rendered = FALSE;
1903    #endif
1904    
1905    #ifdef OSD_SCALE
1906            priv->scale.surface =
1907                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1908                                           OSD_SCALE_W, OSD_SCALE_H);
1909            priv->scale.zoom = -1;
1910    #endif
1911    
1912    #ifdef OSD_CROSSHAIR
1913            priv->crosshair.surface =
1914                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1915                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1916            priv->crosshair.rendered = FALSE;
1917    #endif
1918    
1919    #ifdef OSD_COORDINATES
1920            priv->coordinates.surface =
1921                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1922                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1923    
1924            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1925    #endif
1926    
1927          /* ... and render it */          /* ... and render it */
1928          osm_gps_map_osd_render(osd);          osd_render(osd);
1929      }      }
1930    
1931      // now draw this onto the original context      // now draw this onto the original context
1932      cairo_t *cr = gdk_cairo_create(osd->pixmap);      cairo_t *cr = gdk_cairo_create(drawable);
1933      cairo_set_source_surface(cr, priv->overlay, x, y);  
1934        gint x, y;
1935    
1936    #ifdef OSD_SCALE
1937        x =  OSD_X;
1938        y = -OSD_Y;
1939        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1940        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1941    
1942        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1943      cairo_paint(cr);      cairo_paint(cr);
1944      cairo_destroy(cr);  #endif
 }  
1945    
1946  static void  #ifdef OSD_CROSSHAIR
1947  osm_gps_map_osd_restore (osm_gps_map_osd_t *osd)      x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1948  {      y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1949      osd_priv_t *priv = (osd_priv_t*)osd->priv;  
1950        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1951        cairo_paint(cr);
1952    #endif
1953    
1954    #ifdef OSD_NAV
1955        if(priv->nav.surface) {
1956            x =  OSD_X;
1957            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1958            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1959    
1960            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1961            cairo_paint(cr);
1962        }
1963    #endif
1964    
1965    #ifdef OSD_COORDINATES
1966        x = -OSD_X;
1967        y = -OSD_Y;
1968        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1969        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1970    
1971      /* restore backup of previous contents */      cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1972      if(priv->backup) {      cairo_paint(cr);
1973          /* create backup of background */  #endif
1974          gdk_draw_drawable(osd->pixmap,  
1975                            osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  #ifdef OSD_BALLOON
1976                            priv->backup, 0, 0,      if(priv->balloon.surface) {
1977                            priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2);  
1978            /* convert given lat lon into screen coordinates */
1979            gint x, y;
1980            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1981                                          priv->balloon.lat, priv->balloon.lon,
1982                                          &x, &y);
1983    
1984            /* check if balloon needs to be rerendered */
1985            osd_render_balloon(osd);
1986    
1987            cairo_set_source_surface(cr, priv->balloon.surface,
1988                                     x + priv->balloon.offset_x,
1989                                     y + priv->balloon.offset_y);
1990            cairo_paint(cr);
1991        }
1992    #endif
1993    
1994        x = OSD_X;
1995        if(x < 0)
1996            x += osd->widget->allocation.width - OSD_W;
1997    
1998        y = OSD_Y;
1999        if(y < 0)
2000            y += osd->widget->allocation.height - OSD_H;
2001    
2002        cairo_set_source_surface(cr, priv->controls.surface, x, y);
2003        cairo_paint(cr);
2004    
2005    #ifdef OSD_SOURCE_SEL
2006        if(!priv->source_sel.handler_id) {
2007            /* the OSD source selection is not being animated */
2008            if(!priv->source_sel.expanded)
2009                x = osd->widget->allocation.width - OSD_S_W;
2010            else
2011                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
2012        } else
2013            x = priv->source_sel.shift;
2014    
2015        y = OSD_S_Y;
2016        if(OSD_S_Y < 0) {
2017            if(!priv->source_sel.expanded)
2018                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
2019            else
2020                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
2021      }      }
2022    
2023        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
2024        cairo_paint(cr);
2025    #endif
2026    
2027        cairo_destroy(cr);
2028        FOUT;
2029  }  }
2030    
2031  static void  static void
2032  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
2033  {  {
2034        FIN;
2035      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2036    
2037      if (priv->backup)      if (priv->controls.surface)
2038          g_object_unref(priv->backup);           cairo_surface_destroy(priv->controls.surface);
2039    
2040    #ifdef OSD_SOURCE_SEL
2041        if(priv->source_sel.handler_id)
2042            gtk_timeout_remove(priv->source_sel.handler_id);
2043    
2044      if (priv->overlay)      if (priv->source_sel.surface)
2045           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->source_sel.surface);
2046    #endif
2047    
2048    #ifdef OSD_SCALE
2049        if (priv->scale.surface)
2050             cairo_surface_destroy(priv->scale.surface);
2051    #endif
2052    
2053    #ifdef OSD_CROSSHAIR
2054        if (priv->crosshair.surface)
2055             cairo_surface_destroy(priv->crosshair.surface);
2056    #endif
2057    
2058    #ifdef OSD_NAV
2059        if (priv->nav.surface)
2060             cairo_surface_destroy(priv->nav.surface);
2061    #endif
2062    
2063    #ifdef OSD_COORDINATES
2064        if (priv->coordinates.surface)
2065             cairo_surface_destroy(priv->coordinates.surface);
2066    #endif
2067    
2068    #ifdef OSD_BALLOON
2069        if (priv->balloon.surface)
2070             cairo_surface_destroy(priv->balloon.surface);
2071    #endif
2072    
2073      g_free(priv);      g_free(priv);
2074        FOUT;
2075    }
2076    
2077    static gboolean
2078    osd_busy(osm_gps_map_osd_t *osd)
2079    {
2080        FIN;
2081    #ifdef OSD_SOURCE_SEL
2082        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2083        return (priv->source_sel.handler_id != 0);
2084    #else
2085        return FALSE;
2086    #endif
2087    }
2088    
2089    static osd_button_t
2090    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2091        FIN;
2092        return osd_check_int(osd, TRUE, down, x, y);
2093  }  }
2094    
2095  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2096      .restore    = osm_gps_map_osd_restore,      .widget     = NULL,
2097      .draw       = osm_gps_map_osd_draw,  
2098      .check      = osm_gps_map_osd_check,      .draw       = osd_draw,
2099      .render     = osm_gps_map_osd_render,      .check      = osd_check,
2100      .free       = osm_gps_map_osd_free,      .render     = osd_render,
2101        .free       = osd_free,
2102        .busy       = osd_busy,
2103    
2104      .cb         = NULL,      .cb         = NULL,
2105      .data       = NULL,      .data       = NULL,
# Line 454  static osm_gps_map_osd_t osd_classic = { Line 2111  static osm_gps_map_osd_t osd_classic = {
2111  void  void
2112  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2113  {  {
2114        FIN;
2115      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);
2116    
2117      osd_classic.priv = priv;  #ifdef OSD_BALLOON
2118        priv->balloon.lat = OSM_GPS_MAP_INVALID;
2119        priv->balloon.lon = OSM_GPS_MAP_INVALID;
2120    #endif
2121    
2122      /* extract style info from the widget */      osd_classic.priv = priv;
     priv->bg = GTK_WIDGET(map)->style->bg[GTK_STATE_NORMAL];  
     priv->fg = GTK_WIDGET(map)->style->fg[GTK_STATE_NORMAL];  
     priv->da = GTK_WIDGET(map)->style->fg[GTK_STATE_INSENSITIVE];  
2123    
2124      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2125        FOUT;
2126  }  }
2127    
2128    #ifdef OSD_GPS_BUTTON
2129  /* below are osd specific functions which aren't used by osm-gps-map */  /* below are osd specific functions which aren't used by osm-gps-map */
2130  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2131  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2132                                     gpointer data) {
2133        FIN;
2134      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
2135      g_return_if_fail (osd);      g_return_if_fail (osd);
2136    
2137      osd->cb = cb;      osd->cb = cb;
# Line 482  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2142  void osm_gps_map_osd_enable_gps (OsmGpsM
2142      osd->render(osd);      osd->render(osd);
2143    
2144      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2145        FOUT;
2146    }
2147    #endif
2148    
2149    osd_button_t
2150    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2151        FIN;
2152        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2153        g_return_val_if_fail (osd, OSD_NONE);
2154    
2155        return osd_check_int(osd, FALSE, TRUE, x, y);
2156  }  }
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  Added in v.202