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

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revision 75 by harbaum, Mon Aug 24 12:57:15 2009 UTC revision 146 by harbaum, Tue Oct 27 13:28:41 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      /* 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      GdkColor bg, fg, da;  #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    #define FIN   printf("entering function %s\n", __func__);
139    #define FOUT  printf("leaving function %s\n", __func__);
140    
141    /* draw the bubble shape. this is used twice, once for the shape and once */
142    /* for the shadow */
143    static void
144    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
145           gboolean bottom, int px, int py, int px0, int px1) {
146    
147        FIN;
148    
149        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
150        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
151                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
152        if(!bottom) {
153            /* insert top pointer */
154            cairo_line_to (cr, px1, y0);
155            cairo_line_to (cr, px, py);
156            cairo_line_to (cr, px0, y0);
157        }
158    
159        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
160        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
161                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
162        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
163        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
164                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
165        if(bottom) {
166            /* insert bottom pointer */
167            cairo_line_to (cr, px0, y1);
168            cairo_line_to (cr, px, py);
169            cairo_line_to (cr, px1, y1);
170        }
171    
172        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
173        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
174                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
175    
176        cairo_close_path (cr);
177    
178        FOUT;
179    }
180    
181    static void
182    osd_render_balloon(osm_gps_map_osd_t *osd) {
183        FIN;
184    
185        osd_priv_t *priv = (osd_priv_t*)osd->priv;
186    
187        /* get zoom */
188        gint zoom;
189        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
190    
191        /* ------- convert given coordinate into screen position --------- */
192        gint xs, ys;
193        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
194                                          priv->balloon.lat, priv->balloon.lon,
195                                          &xs, &ys);
196    
197        gint x0 = 1, y0 = 1;
198    
199        /* check position of this relative to screen center to determine */
200        /* pointer direction ... */
201        int pointer_x, pointer_x0, pointer_x1;
202        int pointer_y;
203    
204        /* ... and calculate position */
205        int orientation = 0;
206        if(xs > osd->widget->allocation.width/2) {
207            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
208            pointer_x = x0 - priv->balloon.offset_x;
209            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
210            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
211            orientation |= 1;
212        } else {
213            priv->balloon.offset_x = -POINTER_OFFSET;
214            pointer_x = x0 - priv->balloon.offset_x;
215            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
216            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
217        }
218    
219        gboolean bottom = FALSE;
220        if(ys > osd->widget->allocation.height/2) {
221            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
222            pointer_y = y0 - priv->balloon.offset_y;
223            bottom = TRUE;
224            orientation |= 2;
225        } else {
226            priv->balloon.offset_y = 0;
227            pointer_y = y0 - priv->balloon.offset_y;
228            y0 += POINTER_HEIGHT;
229        }
230    
231        /* if required orientation equals current one, then don't render */
232        /* anything */
233        if(orientation == priv->balloon.orientation)
234            return;
235    
236        priv->balloon.orientation = orientation;
237    
238        /* calculate bottom/right of box */
239        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
240    
241        /* save balloon screen coordinates for later use */
242        priv->balloon.rect.x = x0 + BALLOON_BORDER;
243        priv->balloon.rect.y = y0 + BALLOON_BORDER;
244        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
245        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
246    
247        cairo_t *cr = cairo_create(priv->balloon.surface);
248        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
249        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
250        cairo_paint(cr);
251        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
252    
253        /* --------- draw shadow --------------- */
254        osm_gps_map_draw_balloon_shape (cr,
255                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
256                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
257                     bottom, pointer_x, pointer_y,
258                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
259    
260        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
261        cairo_fill_preserve (cr);
262        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
263        cairo_set_line_width (cr, 0);
264        cairo_stroke (cr);
265    
266        /* --------- draw main shape ----------- */
267        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
268                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
269    
270        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
271        cairo_fill_preserve (cr);
272        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
273        cairo_set_line_width (cr, 1);
274        cairo_stroke (cr);
275    
276        if (priv->balloon.cb) {
277            osm_gps_map_balloon_event_t event;
278    
279            /* clip in case application tries to draw in */
280                /* exceed of the balloon */
281            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
282                             priv->balloon.rect.w, priv->balloon.rect.h);
283            cairo_clip (cr);
284            cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
285    
286            /* request the application to draw the balloon contents */
287            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
288            event.data.draw.rect = &priv->balloon.rect;
289            event.data.draw.cr = cr;
290    
291            priv->balloon.cb(&event, priv->balloon.data);
292        }
293    
294        cairo_destroy(cr);
295    
296        FOUT;
297    }
298    
299    /* return true if balloon is being displayed and if */
300    /* the given coordinate is within this balloon */
301    static gboolean
302    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y)
303    {
304        FIN;
305    
306        osd_priv_t *priv = (osd_priv_t*)osd->priv;
307    
308        if(!priv->balloon.surface)
309            return FALSE;
310    
311        gint xs, ys;
312        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
313                                          priv->balloon.lat, priv->balloon.lon,
314                                          &xs, &ys);
315    
316        xs += priv->balloon.rect.x + priv->balloon.offset_x;
317        ys += priv->balloon.rect.y + priv->balloon.offset_y;
318    
319        gboolean is_in =
320            (x > xs) && (x < xs + priv->balloon.rect.w) &&
321            (y > ys) && (y < ys + priv->balloon.rect.h);
322    
323        /* is this a real click or is the application just checking for something? */
324        if(click) {
325    
326            /* handle the fact that the balloon may have been created by the */
327            /* button down event */
328            if(!is_in && !down && !priv->balloon.just_created) {
329                /* the user actually clicked outside the balloon */
330    
331                /* close the balloon! */
332                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
333    
334                /* and inform application about this */
335                if(priv->balloon.cb) {
336                    osm_gps_map_balloon_event_t event;
337                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
338                    priv->balloon.cb(&event, priv->balloon.data);
339                }
340    
341            }
342    
343            if(is_in && priv->balloon.cb) {
344                osm_gps_map_balloon_event_t event;
345    
346                /* notify application of click */
347                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
348                event.data.click.x = x - xs;
349                event.data.click.y = y - ys;
350                event.data.click.down = down;
351    
352                priv->balloon.cb(&event, priv->balloon.data);
353            }
354        }
355        FOUT;
356        return is_in;
357    }
358    
359    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
360        FIN;
361    
362        g_return_if_fail (OSM_IS_GPS_MAP (map));
363    
364        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
365        g_return_if_fail (osd);
366    
367        osd_priv_t *priv = (osd_priv_t*)osd->priv;
368        g_return_if_fail (priv);
369    
370        if(priv->balloon.surface) {
371            cairo_surface_destroy(priv->balloon.surface);
372            priv->balloon.surface = NULL;
373            priv->balloon.lat = OSM_GPS_MAP_INVALID;
374            priv->balloon.lon = OSM_GPS_MAP_INVALID;
375        }
376        osm_gps_map_redraw(map);
377        FOUT;
378    }
379    
380    void
381    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
382                                  OsmGpsMapBalloonCallback cb, gpointer data) {
383        FIN;
384        g_return_if_fail (OSM_IS_GPS_MAP (map));
385    
386        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
387        g_return_if_fail (osd);
388    
389        osd_priv_t *priv = (osd_priv_t*)osd->priv;
390        g_return_if_fail (priv);
391    
392        osm_gps_map_osd_clear_balloon (map);
393    
394        /* allocate balloon surface */
395        priv->balloon.surface =
396            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
397                                       BALLOON_W+2, BALLOON_H+2);
398    
399        priv->balloon.lat = latitude;
400        priv->balloon.lon = longitude;
401        priv->balloon.cb = cb;
402        priv->balloon.data = data;
403        priv->balloon.just_created = TRUE;
404    
405        priv->balloon.orientation = -1;
406    
407        osd_render_balloon(osd);
408    
409        osm_gps_map_redraw(map);
410        FOUT;
411    }
412    
413    #endif // OSD_BALLOON
414    
415  /* position and extent of bounding box */  /* position and extent of bounding box */
416    #ifndef OSD_X
417  #define OSD_X      (10)  #define OSD_X      (10)
418    #endif
419    
420    #ifndef OSD_Y
421  #define OSD_Y      (10)  #define OSD_Y      (10)
422    #endif
423    
424  /* parameters of the direction shape */  /* parameters of the direction shape */
425  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
426  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
427  #else  #else
428  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
429  #endif  #endif
430  #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
431  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 67  typedef struct { Line 442  typedef struct {
442  #define OSD_SHADOW (0)  #define OSD_SHADOW (0)
443  #endif  #endif
444    
445    /* normally the GPS button is in the center of the dpad. if there's */
446    /* no dpad it will go into the zoom area */
447    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
448    #define Z_GPS  1
449    #else
450    #define Z_GPS  0
451    #endif
452    
453  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
454  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
455    #if !Z_GPS
456  #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)
457    #else
458    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
459    #endif
460    
461  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
462  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
463  #endif  #endif
464    
465  #define Z_TOP    (2 * D_RAD + Z_STEP)  #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
466    
467  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
468  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
469  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
470  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
471    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
472    
473  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
474  static void  static void
475  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
476  {  {
477      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
478      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 93  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 481  osm_gps_map_osd_zoom_shape(cairo_t *cr,
481      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);
482  }  }
483    
484    /* ------------------- color/shadow functions ----------------- */
485    
486    #ifndef OSD_COLOR
487    /* if no color has been specified we just use the gdks default colors */
488    static void
489    osd_labels(cairo_t *cr, gint width, gboolean enabled,
490                           GdkColor *fg, GdkColor *disabled) {
491        if(enabled)  gdk_cairo_set_source_color(cr, fg);
492        else         gdk_cairo_set_source_color(cr, disabled);
493        cairo_set_line_width (cr, width);
494    }
495    #else
496    static void
497    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
498        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
499        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
500        cairo_set_line_width (cr, width);
501    }
502    #endif
503    
504    #ifdef OSD_SHADOW_ENABLE
505    static void
506    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
507        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
508        cairo_set_line_width (cr, width);
509    }
510    #endif
511    
512    #ifndef OSD_NO_DPAD
513  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
514  static void  static void
515  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
516  {  {
517      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);
518  }  }
519    #endif
520    
521    #ifdef OSD_SHADOW_ENABLE
522    static void
523    osd_shape_shadow(cairo_t *cr) {
524        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
525        cairo_fill (cr);
526        cairo_stroke (cr);
527    }
528    #endif
529    
530    #ifndef OSD_COLOR
531    /* if no color has been specified we just use the gdks default colors */
532    static void
533    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
534        gdk_cairo_set_source_color(cr, bg);
535        cairo_fill_preserve (cr);
536        gdk_cairo_set_source_color(cr, fg);
537        cairo_set_line_width (cr, 1);
538        cairo_stroke (cr);
539    }
540    #else
541    static void
542    osd_shape(cairo_t *cr) {
543        cairo_set_source_rgb (cr, OSD_COLOR_BG);
544        cairo_fill_preserve (cr);
545        cairo_set_source_rgb (cr, OSD_COLOR);
546        cairo_set_line_width (cr, 1);
547        cairo_stroke (cr);
548    }
549    #endif
550    
551    
552  static gboolean  static gboolean
553  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)
554  {  {
555        FIN;
556      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
557  }  }
558    
559    #ifndef OSD_NO_DPAD
560  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
561  static osd_button_t  static osd_button_t
562  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
563  {  {
564      /* within entire dpad circle */      /* within entire dpad circle */
565      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))
566      {      {
567          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
568          x -= (OSD_X + D_RAD);          x -= D_RAD;
569          y -= (OSD_Y + D_RAD);          y -= D_RAD;
570    
571    #ifdef OSD_GPS_BUTTON
572          /* check for dpad center goes here! */          /* check for dpad center goes here! */
573          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))
574              return OSD_GPS;              return OSD_GPS;
575    #endif
576    
577          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
578              return OSD_UP;              return OSD_UP;
# Line 130  osm_gps_map_osd_check_dpad(gint x, gint Line 583  osm_gps_map_osd_check_dpad(gint x, gint
583          if( x < 0 && abs(y) < abs(x))          if( x < 0 && abs(y) < abs(x))
584              return OSD_LEFT;              return OSD_LEFT;
585    
586          if( x > 0 && abs(y) < abs(x))          if( x > 0 && abs(y) < abs(x))
587              return OSD_RIGHT;              return OSD_RIGHT;
588    
589            return OSD_BG;
590        }
591        return OSD_NONE;
592    }
593    #endif
594    
595    /* check whether x/y is within the zoom pads */
596    static osd_button_t
597    osd_check_zoom(gint x, gint y) {
598        if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
599    
600            /* within circle around (-) label */
601            if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD))
602                return OSD_OUT;
603    
604            /* within circle around (+) label */
605            if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD))
606                return OSD_IN;
607    
608    #if Z_GPS == 1
609            /* within square around center */
610            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
611                return OSD_GPS;
612    #endif
613    
614            /* between center of (-) button and center of entire zoom control area */
615            if(x > OSD_LEFT && x < D_RAD)
616                return OSD_OUT;
617    
618            /* between center of (+) button and center of entire zoom control area */
619            if(x < OSD_RIGHT && x > D_RAD)
620                return OSD_IN;
621        }
622    
623        return OSD_NONE;
624    }
625    
626    #ifdef OSD_SOURCE_SEL
627    
628    /* place source selection at right border */
629    #define OSD_S_RAD (Z_RAD)
630    #define OSD_S_X   (-OSD_X)
631    #define OSD_S_Y   (OSD_Y)
632    #define OSD_S_PW  (2 * Z_RAD)
633    #define OSD_S_W   (OSD_S_PW)
634    #define OSD_S_PH  (2 * Z_RAD)
635    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
636    
637    /* size of usable area when expanded */
638    #define OSD_S_AREA_W (priv->source_sel.width)
639    #define OSD_S_AREA_H (priv->source_sel.height)
640    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
641    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
642    
643    /* internal value to draw the arrow on the "puller" */
644    #define OSD_S_D0  (OSD_S_RAD/2)
645    #ifndef OSD_FONT_SIZE
646    #define OSD_FONT_SIZE (16.0)
647    #endif
648    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
649    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
650    
651    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
652    /* or the entire menu incl. the puller (expanded) */
653    static void
654    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
655        if(!priv->source_sel.expanded) {
656            /* just draw the puller */
657            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
658            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
659            cairo_line_to (cr, x + OSD_S_PW, y);
660        } else {
661            /* draw the puller and the area itself */
662            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
663            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
664            if(OSD_S_Y > 0) {
665                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
666                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
667            } else {
668                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
669                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
670                cairo_line_to (cr, x + OSD_S_PW, y);
671            }
672            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
673            cairo_close_path (cr);
674        }
675    }
676    
677    static void
678    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
679        osd_priv_t *priv = (osd_priv_t*)osd->priv;
680    
681        int py = offset + OSD_S_RAD - OSD_S_D0;
682    
683        if(!priv->source_sel.expanded) {
684            /* draw the "puller" open (<) arrow */
685            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
686            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
687            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
688        } else {
689            if(OSD_S_Y < 0)
690                py += OSD_S_AREA_H - OSD_S_PH;
691    
692            /* draw the "puller" close (>) arrow */
693            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
694            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
695            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
696            cairo_stroke(cr);
697    
698            /* don't draw a shadow for the text content */
699            if(offset == 1) {
700                gint source;
701                g_object_get(osd->widget, "map-source", &source, NULL);
702    
703                cairo_select_font_face (cr, "Sans",
704                                        CAIRO_FONT_SLANT_NORMAL,
705                                        CAIRO_FONT_WEIGHT_BOLD);
706                cairo_set_font_size (cr, OSD_FONT_SIZE);
707    
708                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
709                    OSM_GPS_MAP_SOURCE_LAST;
710                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
711                    cairo_text_extents_t extents;
712                    const char *src = osm_gps_map_source_get_friendly_name(i);
713                    cairo_text_extents (cr, src, &extents);
714    
715                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
716                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
717    
718                    /* draw filled rectangle if selected */
719                    if(source == i) {
720                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
721                                        y - OSD_TEXT_SKIP,
722                                        priv->source_sel.width - OSD_TEXT_BORDER,
723                                        step + OSD_TEXT_SKIP);
724                        cairo_fill(cr);
725    
726                        /* temprarily draw with background color */
727    #ifndef OSD_COLOR
728                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
729                        gdk_cairo_set_source_color(cr, &bg);
730    #else
731                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
732    #endif
733                    }
734    
735                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
736                    cairo_show_text (cr, src);
737    
738                    /* restore color */
739                    if(source == i) {
740    #ifndef OSD_COLOR
741                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
742                        gdk_cairo_set_source_color(cr, &fg);
743    #else
744                        cairo_set_source_rgb (cr, OSD_COLOR);
745    #endif
746                    }
747                }
748            }
749        }
750    }
751    
752    static void
753    osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
754        FIN;
755    
756        osd_priv_t *priv = (osd_priv_t*)osd->priv;
757    
758        if(priv->source_sel.rendered && !force_rerender)
759            return;
760    
761        priv->source_sel.rendered = TRUE;
762    
763    #ifndef OSD_COLOR
764        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
765        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
766        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
767    #endif
768    
769        /* draw source selector */
770        cairo_t *cr = cairo_create(priv->source_sel.surface);
771        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
772        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
773        cairo_paint(cr);
774        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
775    
776    #ifdef OSD_SHADOW_ENABLE
777        osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
778        osd_shape_shadow(cr);
779    #endif
780    
781        osd_source_shape(priv, cr, 1, 1);
782    #ifndef OSD_COLOR
783        osd_shape(cr, &bg, &fg);
784    #else
785        osd_shape(cr);
786    #endif
787    
788    #ifdef OSD_SHADOW_ENABLE
789        osd_labels_shadow(cr, Z_RAD/3, TRUE);
790        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
791        cairo_stroke (cr);
792    #endif
793    #ifndef OSD_COLOR
794        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
795    #else
796        osd_labels(cr, Z_RAD/3, TRUE);
797    #endif
798        osd_source_content(osd, cr, 1);
799        cairo_stroke (cr);
800    
801        cairo_destroy(cr);
802        FOUT;
803    }
804    
805    /* re-allocate the buffer used to draw the menu. This is used */
806    /* to collapse/expand the buffer */
807    static void
808    osd_source_reallocate(osm_gps_map_osd_t *osd) {
809        FIN;
810        osd_priv_t *priv = (osd_priv_t*)osd->priv;
811    
812        /* re-allocate offscreen bitmap */
813        g_assert (priv->source_sel.surface);
814    
815        int w = OSD_S_W, h = OSD_S_H;
816        if(priv->source_sel.expanded) {
817            cairo_text_extents_t extents;
818    
819            /* determine content size */
820            cairo_t *cr = cairo_create(priv->source_sel.surface);
821            cairo_select_font_face (cr, "Sans",
822                                    CAIRO_FONT_SLANT_NORMAL,
823                                    CAIRO_FONT_WEIGHT_BOLD);
824            cairo_set_font_size (cr, OSD_FONT_SIZE);
825    
826            /* calculate menu size */
827            int i, max_h = 0, max_w = 0;
828            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
829                const char *src = osm_gps_map_source_get_friendly_name(i);
830                cairo_text_extents (cr, src, &extents);
831    
832                if(extents.width > max_w) max_w = extents.width;
833                if(extents.height > max_h) max_h = extents.height;
834            }
835            cairo_destroy(cr);
836    
837            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
838            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
839                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
840    
841            w = OSD_S_EXP_W;
842            h = OSD_S_EXP_H;
843        }
844    
845        cairo_surface_destroy(priv->source_sel.surface);
846        priv->source_sel.surface =
847            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
848    
849        osd_render_source_sel(osd, TRUE);
850        FOUT;
851    }
852    
853    #define OSD_HZ      15
854    #define OSD_TIME    500
855    
856    static gboolean osd_source_animate(gpointer data) {
857        FIN;
858        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
859        osd_priv_t *priv = (osd_priv_t*)osd->priv;
860        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
861        gboolean done = FALSE;
862        priv->source_sel.count += priv->source_sel.dir;
863    
864        /* shifting in */
865        if(priv->source_sel.dir < 0) {
866            if(priv->source_sel.count <= 0) {
867                priv->source_sel.count = 0;
868                done = TRUE;
869            }
870        } else {
871            if(priv->source_sel.count >= 1000) {
872                priv->source_sel.expanded = FALSE;
873                osd_source_reallocate(osd);
874    
875                priv->source_sel.count = 1000;
876                done = TRUE;
877            }
878        }
879    
880    
881        /* count runs linearly from 0 to 1000, map this nicely onto a position */
882    
883        /* nice sinoid mapping */
884        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
885        priv->source_sel.shift =
886            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
887            m * diff;
888    
889        /* make sure the screen is updated */
890        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
891    
892        /* stop animation if done */
893        if(done)
894            priv->source_sel.handler_id = 0;
895    
896        FOUT;
897        return !done;
898    }
899    
900    /* switch between expand and collapse mode of source selection */
901    static void
902    osd_source_toggle(osm_gps_map_osd_t *osd)
903    {
904        FIN;
905        osd_priv_t *priv = (osd_priv_t*)osd->priv;
906    
907        /* ignore clicks while animation is running */
908        if(priv->source_sel.handler_id)
909            return;
910    
911        /* expand immediately, collapse is handle at the end of the */
912        /* collapse animation */
913        if(!priv->source_sel.expanded) {
914            priv->source_sel.expanded = TRUE;
915            osd_source_reallocate(osd);
916    
917            priv->source_sel.count = 1000;
918            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
919            priv->source_sel.dir = -1000/OSD_HZ;
920        } else {
921            priv->source_sel.count =  0;
922            priv->source_sel.shift = osd->widget->allocation.width -
923                OSD_S_EXP_W + OSD_S_X;
924            priv->source_sel.dir = +1000/OSD_HZ;
925        }
926    
927        /* start timer to handle animation */
928        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
929                                                      osd_source_animate, osd);
930        FOUT;
931    }
932    
933    /* check if the user clicked inside the source selection area */
934    static osd_button_t
935    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
936        FIN;
937        osd_priv_t *priv = (osd_priv_t*)osd->priv;
938    
939        if(!priv->source_sel.expanded)
940            x -= osd->widget->allocation.width - OSD_S_W;
941        else
942            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
943    
944        if(OSD_S_Y > 0)
945            y -= OSD_S_Y;
946        else
947            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
948    
949        /* within square around puller? */
950        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
951            /* really within puller shape? */
952            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
953                /* expand source selector */
954                if(down)
955                    osd_source_toggle(osd);
956    
957                /* tell upper layers that user clicked some background element */
958                /* of the OSD */
959                return OSD_BG;
960            }
961        }
962    
963        /* check for clicks into data area */
964        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
965            /* re-adjust from puller top to content top */
966            if(OSD_S_Y < 0)
967                y += OSD_S_EXP_H - OSD_S_PH;
968    
969            if(x > OSD_S_PW &&
970               x < OSD_S_PW + OSD_S_EXP_W &&
971               y > 0 &&
972               y < OSD_S_EXP_H) {
973    
974                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
975                    / OSM_GPS_MAP_SOURCE_LAST;
976    
977                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
978                y /= step;
979                y += 1;
980    
981                if(down) {
982                    gint old = 0;
983                    g_object_get(osd->widget, "map-source", &old, NULL);
984    
985                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
986                       y <= OSM_GPS_MAP_SOURCE_LAST &&
987                       old != y) {
988                        g_object_set(osd->widget, "map-source", y, NULL);
989    
990                        osd_render_source_sel(osd, TRUE);
991                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
992                    }
993                }
994    
995                /* return "clicked in OSD background" to prevent further */
996                /* processing by application */
997                return OSD_BG;
998            }
999        }
1000    
1001        FOUT;
1002        return OSD_NONE;
1003    }
1004    #endif // OSD_SOURCE_SEL
1005    
1006    static osd_button_t
1007    osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) {
1008        FIN;
1009        osd_button_t but = OSD_NONE;
1010    
1011    #ifdef OSD_BALLOON
1012        if(down) {
1013            /* needed to handle balloons that are created at click */
1014            osd_priv_t *priv = (osd_priv_t*)osd->priv;
1015            priv->balloon.just_created = FALSE;
1016        }
1017    #endif
1018    
1019    #ifdef OSD_SOURCE_SEL
1020        /* the source selection area is handles internally */
1021        but = osd_source_check(osd, down, x, y);
1022    #endif
1023    
1024        if(but == OSD_NONE) {
1025            gint mx = x - OSD_X;
1026            gint my = y - OSD_Y;
1027    
1028            if(OSD_X < 0)
1029                mx -= (osd->widget->allocation.width - OSD_W);
1030    
1031            if(OSD_Y < 0)
1032                my -= (osd->widget->allocation.height - OSD_H);
1033    
1034            /* first do a rough test for the OSD area. */
1035            /* this is just to avoid an unnecessary detailed test */
1036            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
1037    #ifndef OSD_NO_DPAD
1038                but = osd_check_dpad(mx, my);
1039    #endif
1040            }
1041    
1042            if(but == OSD_NONE)
1043                but = osd_check_zoom(mx, my);
1044        }
1045    
1046    #ifdef OSD_BALLOON
1047        if(but == OSD_NONE) {
1048            /* check if user clicked into balloon */
1049            if(osd_balloon_check(osd, click, down, x, y))
1050                but = OSD_BG;
1051        }
1052    #endif
1053    
1054        FOUT;
1055        return but;
1056    }
1057    
1058    #ifndef OSD_NO_DPAD
1059    static void
1060    osd_dpad_labels(cairo_t *cr, gint x, gint y) {
1061        /* move reference to dpad center */
1062        x += D_RAD;
1063        y += D_RAD;
1064    
1065        const static gint offset[][3][2] = {
1066            /* left arrow/triangle */
1067            { { -D_TIP+D_LEN, -D_WID }, { -D_LEN, D_WID }, { +D_LEN, D_WID } },
1068            /* right arrow/triangle */
1069            { { +D_TIP-D_LEN, -D_WID }, { +D_LEN, D_WID }, { -D_LEN, D_WID } },
1070            /* top arrow/triangle */
1071            { { -D_WID, -D_TIP+D_LEN }, { D_WID, -D_LEN }, { D_WID, +D_LEN } },
1072            /* bottom arrow/triangle */
1073            { { -D_WID, +D_TIP-D_LEN }, { D_WID, +D_LEN }, { D_WID, -D_LEN } }
1074        };
1075    
1076        int i;
1077        for(i=0;i<4;i++) {
1078            cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);
1079            cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);
1080            cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
1081        }
1082    }
1083    #endif
1084    
1085    #ifdef OSD_GPS_BUTTON
1086    /* draw the satellite dish icon in the center of the dpad */
1087    #define GPS_V0  (D_RAD/7)
1088    #define GPS_V1  (D_RAD/10)
1089    #define GPS_V2  (D_RAD/5)
1090    
1091    /* draw a satellite receiver dish */
1092    /* this is either drawn in the center of the dpad (if present) */
1093    /* or in the middle of the zoom area */
1094    static void
1095    osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1096        /* move reference to dpad center */
1097        x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1098        y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
1099    
1100        cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1101        cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
1102        cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);
1103        cairo_close_path (cr);
1104    
1105        cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);
1106        cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);
1107        cairo_close_path (cr);
1108    
1109        x += GPS_V1;
1110        cairo_move_to (cr, x, y-GPS_V2);
1111        cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1112    }
1113    #endif
1114    
1115    #define Z_LEN  (2*Z_RAD/3)
1116    
1117    static void
1118    osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1119        cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1120        cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1121    
1122        cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);
1123        cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);
1124        cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);
1125        cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1126    }
1127    
1128    #ifdef OSD_COORDINATES
1129    
1130    #ifndef OSD_COORDINATES_FONT_SIZE
1131    #define OSD_COORDINATES_FONT_SIZE (12.0)
1132    #endif
1133    
1134    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1135    
1136    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1137    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1138    
1139    /* these can be overwritten with versions that support */
1140    /* localization */
1141    #ifndef OSD_COORDINATES_CHR_N
1142    #define OSD_COORDINATES_CHR_N  "N"
1143    #endif
1144    #ifndef OSD_COORDINATES_CHR_S
1145    #define OSD_COORDINATES_CHR_S  "S"
1146    #endif
1147    #ifndef OSD_COORDINATES_CHR_E
1148    #define OSD_COORDINATES_CHR_E  "E"
1149    #endif
1150    #ifndef OSD_COORDINATES_CHR_W
1151    #define OSD_COORDINATES_CHR_W  "W"
1152    #endif
1153    
1154    
1155    
1156    /* this is the classic geocaching notation */
1157    static char
1158    *osd_latitude_str(float latitude) {
1159        char *c = OSD_COORDINATES_CHR_N;
1160        float integral, fractional;
1161    
1162        if(isnan(latitude))
1163            return NULL;
1164    
1165        if(latitude < 0) {
1166            latitude = fabs(latitude);
1167            c = OSD_COORDINATES_CHR_S;
1168        }
1169    
1170        fractional = modff(latitude, &integral);
1171    
1172        return g_strdup_printf("%s %02d° %06.3f'",
1173                               c, (int)integral, fractional*60.0);
1174    }
1175    
1176    static char
1177    *osd_longitude_str(float longitude) {
1178        char *c = OSD_COORDINATES_CHR_E;
1179        float integral, fractional;
1180    
1181        if(isnan(longitude))
1182            return NULL;
1183    
1184        if(longitude < 0) {
1185            longitude = fabs(longitude);
1186            c = OSD_COORDINATES_CHR_W;
1187        }
1188    
1189        fractional = modff(longitude, &integral);
1190    
1191        return g_strdup_printf("%s %03d° %06.3f'",
1192                               c, (int)integral, fractional*60.0);
1193    }
1194    
1195    /* render a string at the given screen position */
1196    static int
1197    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1198        FIN;
1199    
1200        printf("params: %p %d %d %p\n", cr, y, width, text); // XXX
1201    
1202        if(!text) return y;
1203    
1204        printf("text given: %s\n", text); // XXX
1205    
1206        char *p = g_malloc(strlen(text)+4);  // space for "...\n"
1207        strcpy(p, text);
1208    
1209        cairo_text_extents_t extents;
1210    
1211        printf("test extents of \"abc\"\n");
1212        memset(&extents, 0, sizeof(cairo_text_extents_t));
1213        cairo_text_extents (cr, "abc", &extents);
1214        printf("-> %f\n", extents.width);
1215    
1216        printf("test extents of \"49 00.000\"\n");
1217        memset(&extents, 0, sizeof(cairo_text_extents_t));
1218        cairo_text_extents (cr, "49 00.000", &extents);
1219        printf("-> %f\n", extents.width);
1220    
1221        printf("test extents of \"49° 00.000\"\n");
1222        memset(&extents, 0, sizeof(cairo_text_extents_t));
1223        cairo_text_extents (cr, "49° 00.000", &extents);
1224        printf("-> %f\n", extents.width);
1225    
1226        printf("getting extents for \"%s\"\n", p);  // XXX
1227        memset(&extents, 0, sizeof(cairo_text_extents_t));
1228        cairo_text_extents (cr, p, &extents);
1229        printf("initial extents.width = %f\n", extents.width);  // XXX
1230    
1231        /* check if text needs to be truncated */
1232        int trunc_at = strlen(text)-1;
1233        while(extents.width > width) {
1234            g_assert(trunc_at > 0);
1235    
1236            printf("trunc at %d\n", trunc_at);  // XXX
1237    
1238            trunc_at--;
1239            strcpy(p+trunc_at, "...");
1240            printf("getting extents for \"%s\"\n", p);  // XXX
1241    
1242            memset(&extents, 0, sizeof(cairo_text_extents_t));
1243            cairo_text_extents (cr, p, &extents);
1244            printf("extents.width = %f > %d\n", extents.width, width);  // XXX
1245        }
1246    
1247        printf("painting\n"); // XXX
1248    
1249        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1250        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1251        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1252        cairo_text_path (cr, p);
1253        cairo_stroke (cr);
1254    
1255        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1256        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1257        cairo_show_text (cr, p);
1258    
1259        g_free(p);
1260    
1261        /* skip + 1/5 line */
1262        FOUT;
1263        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1264    }
1265    
1266    static void
1267    osd_render_coordinates(osm_gps_map_osd_t *osd)
1268    {
1269        FIN;
1270        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1271    
1272        /* get current map position */
1273        gfloat lat, lon;
1274        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1275    
1276        /* check if position has changed enough to require redraw */
1277        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1278            /* 1/60000 == 1/1000 minute */
1279            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1280               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1281                return;
1282    
1283        priv->coordinates.lat = lat;
1284        priv->coordinates.lon = lon;
1285    
1286        /* first fill with transparency */
1287        cairo_t *cr = cairo_create(priv->coordinates.surface);
1288        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1289        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1290        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1291        cairo_paint(cr);
1292        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1293    
1294        cairo_select_font_face (cr, "Sans",
1295                                CAIRO_FONT_SLANT_NORMAL,
1296                                CAIRO_FONT_WEIGHT_BOLD);
1297        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1298    
1299        char *latitude = osd_latitude_str(lat);
1300        char *longitude = osd_longitude_str(lon);
1301    
1302        int y = OSD_COORDINATES_OFFSET;
1303        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1304        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1305    
1306        g_free(latitude);
1307        g_free(longitude);
1308    
1309        cairo_destroy(cr);
1310        FOUT;
1311    }
1312    #endif  // OSD_COORDINATES
1313    
1314    #ifdef OSD_NAV
1315    #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1316    #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1317    
1318    /* http://mathforum.org/library/drmath/view/55417.html */
1319    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1320      return atan2( sin(lon2 - lon1) * cos(lat2),
1321                    cos(lat1) * sin(lat2) -
1322                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1323    }
1324    
1325    /* http://mathforum.org/library/drmath/view/51722.html */
1326    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1327      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1328                       sin(lat1) * sin(lat2));
1329    
1330      //  return(aob * 3959.0);   /* great circle radius in miles */
1331    
1332      return(aob * 6371000.0);     /* great circle radius in meters */
1333    }
1334    
1335    static void
1336    osd_render_nav(osm_gps_map_osd_t *osd)
1337    {
1338        FIN;
1339        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1340    
1341        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1342            return;
1343    
1344        /* first fill with transparency */
1345        cairo_t *cr = cairo_create(priv->nav.surface);
1346        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1347        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1348        cairo_paint(cr);
1349        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1350    
1351        cairo_select_font_face (cr, "Sans",
1352                                CAIRO_FONT_SLANT_NORMAL,
1353                                CAIRO_FONT_WEIGHT_BOLD);
1354        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1355    
1356        char *latitude = osd_latitude_str(priv->nav.lat);
1357        char *longitude = osd_longitude_str(priv->nav.lon);
1358    
1359        int y = OSD_COORDINATES_OFFSET;
1360        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1361        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1362        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1363    
1364        g_free(latitude);
1365        g_free(longitude);
1366    
1367        /* draw the compass */
1368        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1369        if(radius > OSD_NAV_W/2)
1370            radius = OSD_NAV_W/2;
1371    
1372        int x = OSD_NAV_W/2+1;
1373        y += radius;
1374    
1375        cairo_stroke (cr);
1376    
1377        /* draw background */
1378        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1379        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1380        cairo_fill_preserve (cr);
1381        cairo_set_source_rgb (cr, 0, 0, 0);
1382        cairo_set_line_width (cr, 1);
1383        cairo_stroke (cr);
1384    
1385        /* draw pointer */
1386    #define ARROW_WIDTH     0.3
1387    #define ARROW_LENGTH    0.7
1388    
1389        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1390        if(gps) {
1391            float arot = get_bearing(gps->rlat, gps->rlon,
1392                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1393    
1394            cairo_move_to(cr,
1395                          x + radius *  ARROW_LENGTH *  sin(arot),
1396                          y + radius *  ARROW_LENGTH * -cos(arot));
1397    
1398            cairo_line_to(cr,
1399                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1400                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1401    
1402            cairo_line_to(cr,
1403                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1404                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1405    
1406            cairo_line_to(cr,
1407                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1408                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1409    
1410            cairo_close_path(cr);
1411            cairo_set_source_rgb (cr, 0, 0, 0);
1412            cairo_fill (cr);
1413    
1414            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1415    
1416            float dist = get_distance(gps->rlat, gps->rlon,
1417                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1418    
1419            char *dist_str = NULL;
1420            if(!priv->nav.imperial) {
1421                /* metric is easy ... */
1422                if(dist<1000)
1423                    dist_str = g_strdup_printf("%u m", (int)dist);
1424                else
1425                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1426            } else {
1427                /* and now the hard part: scale for useful imperial values :-( */
1428                /* try to convert to feet, 1ft == 0.3048 m */
1429    
1430                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1431                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1432                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1433                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1434                else
1435                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1436            }
1437    
1438            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1439            g_free(dist_str);
1440        }
1441    
1442        cairo_destroy(cr);
1443        FOUT;
1444    }
1445    
1446    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1447        FIN;
1448        g_return_if_fail (OSM_IS_GPS_MAP (map));
1449    
1450        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1451        g_return_if_fail (osd);
1452    
1453        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1454        g_return_if_fail (priv);
1455    
1456          return OSD_BG;      if(priv->nav.surface) {
1457            cairo_surface_destroy(priv->nav.surface);
1458            priv->nav.surface = NULL;
1459            priv->nav.lat = OSM_GPS_MAP_INVALID;
1460            priv->nav.lon = OSM_GPS_MAP_INVALID;
1461            if(priv->nav.name) g_free(priv->nav.name);
1462      }      }
1463      return OSD_NONE;      osm_gps_map_redraw(map);
1464        FOUT;
1465  }  }
1466    
1467  /* check whether x/y is within the zoom pads */  void
1468  static osd_button_t  osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1469  osm_gps_map_osd_check_zoom(gint x, gint y) {                            float latitude, float longitude, char *name) {
1470      if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {      FIN;
1471        g_return_if_fail (OSM_IS_GPS_MAP (map));
         /* within circle around (-) label */  
         if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))  
             return OSD_OUT;  
1472    
1473          /* between center of (-) button and center of entire zoom control area */      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1474          if(x > OSD_LEFT && x < OSD_X + D_RAD)      g_return_if_fail (osd);
             return OSD_OUT;  
1475    
1476          /* within circle around (+) label */      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1477          if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))      g_return_if_fail (priv);
             return OSD_IN;  
1478    
1479          /* between center of (+) button and center of entire zoom control area */      osm_gps_map_osd_clear_nav (map);
         if(x < OSD_RIGHT && x > OSD_X + D_RAD)  
             return OSD_IN;  
     }  
   
     return OSD_NONE;  
 }  
1480    
1481  static osd_button_t      /* allocate balloon surface */
1482  osm_gps_map_osd_check(gint x, gint y) {      priv->nav.surface =
1483      osd_button_t but = OSD_NONE;          cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1484                                       OSD_NAV_W+2, OSD_NAV_H+2);
1485    
1486      /* first do a rough test for the OSD area. */      priv->nav.lat = latitude;
1487      /* this is just to avoid an unnecessary detailed test */      priv->nav.lon = longitude;
1488      if(x > OSD_X && x < OSD_X + OSD_W &&      priv->nav.name = g_strdup(name);
1489         y > OSD_Y && y < OSD_Y + OSD_H) {      priv->nav.imperial = imperial;
         but = osm_gps_map_osd_check_dpad(x, y);  
1490    
1491          if(but == OSD_NONE)      osd_render_nav(osd);
             but = osm_gps_map_osd_check_zoom(x, y);  
     }  
1492    
1493      return but;      osm_gps_map_redraw(map);
1494        FOUT;
1495  }  }
1496    
1497  #ifdef OSD_SHADOW_ENABLE  #endif // OSD_NAV
1498  static void  
1499  osm_gps_map_osd_shape_shadow(cairo_t *cr) {  
1500      cairo_set_source_rgba (cr, 0, 0, 0, 0.2);  #ifdef OSD_CROSSHAIR
1501      cairo_fill (cr);  
1502      cairo_stroke (cr);  #ifndef OSD_CROSSHAIR_RADIUS
1503  }  #define OSD_CROSSHAIR_RADIUS 10
1504  #endif  #endif
1505    
1506  #ifndef OSD_COLOR  #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1507  /* if no color has been specified we just use the gdks default colors */  #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1508  static void  #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1509  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {  #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1510      gdk_cairo_set_source_color(cr, bg);  
1511      cairo_fill_preserve (cr);  static void
1512      gdk_cairo_set_source_color(cr, fg);  osd_render_crosshair_shape(cairo_t *cr) {
1513      cairo_set_line_width (cr, 1);      FIN;
1514      cairo_stroke (cr);      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1515  }                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1516  #else  
1517  static void      cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1518  osm_gps_map_osd_shape(cairo_t *cr) {                     OSD_CROSSHAIR_H/2);
1519      cairo_set_source_rgb (cr, OSD_COLOR_BG);      cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1520      cairo_fill_preserve (cr);      cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1521      cairo_set_source_rgb (cr, OSD_COLOR);                     OSD_CROSSHAIR_H/2);
1522      cairo_set_line_width (cr, 1);      cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1523    
1524        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1525                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1526        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1527        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1528                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1529        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1530    
1531      cairo_stroke (cr);      cairo_stroke (cr);
1532        FOUT;
1533  }  }
 #endif  
1534    
1535  static void  static void
1536  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
1537      /* move reference to dpad center */  {
1538      x += D_RAD;      FIN;
1539      y += D_RAD;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1540    
1541      const static gint offset[][3][2] = {      if(priv->crosshair.rendered)
1542          /* 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 } }  
     };  
1543    
1544      int i;      priv->crosshair.rendered = TRUE;
     for(i=0;i<4;i++) {  
         cairo_move_to (cr, x + offset[i][0][0], y + offset[i][0][1]);  
         cairo_rel_line_to (cr, offset[i][1][0], offset[i][1][1]);  
         cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);  
     }  
 }  
1545    
1546  /* draw the sattelite dish icon in the center of the dpad */      /* first fill with transparency */
1547  #define GPS_V0  (D_RAD/8)      cairo_t *cr = cairo_create(priv->crosshair.surface);
1548  #define GPS_V1  (D_RAD/10)      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1549  #define GPS_V2  (D_RAD/5)      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1550        cairo_paint(cr);
1551        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1552    
1553  /* draw a satellite receiver dish */      cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1554  static void  
1555  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {      cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1556      /* move reference to dpad center */      cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1557      x += D_RAD;      osd_render_crosshair_shape(cr);
1558      y += D_RAD + GPS_V0;  
1559        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1560        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1561        osd_render_crosshair_shape(cr);
1562    
1563      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_destroy(cr);
1564      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);      FOUT;
1565      cairo_rel_line_to (cr, +GPS_V0, +GPS_V0);  }
1566      cairo_close_path (cr);  #endif
1567    
1568      cairo_move_to (cr, x+GPS_V1-GPS_V2, y-2*GPS_V2);  #ifdef OSD_SCALE
     cairo_curve_to (cr, x-GPS_V2, y, x+GPS_V1, y+GPS_V1, x+GPS_V1+GPS_V2, y);  
     cairo_close_path (cr);  
1569    
1570      x += GPS_V1;  #ifndef OSD_SCALE_FONT_SIZE
1571      cairo_move_to (cr, x, y-GPS_V2);  #define OSD_SCALE_FONT_SIZE (12.0)
1572      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);  #endif
1573  }  #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1574    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1575    
1576  #define Z_LEN  (2*Z_RAD/3)  /* various parameters used to create the scale */
1577    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1578    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1579    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1580    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1581    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1582    
1583  static void  static void
1584  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_render_scale(osm_gps_map_osd_t *osd)
1585      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);  {
1586      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      FIN;
1587        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1588    
1589      cairo_move_to (cr, x + Z_RIGHT,         y + Z_MID - Z_LEN);      /* this only needs to be rendered if the zoom has changed */
1590      cairo_line_to (cr, x + Z_RIGHT,         y + Z_MID + Z_LEN);      gint zoom;
1591      cairo_move_to (cr, x + Z_RIGHT - Z_LEN, y + Z_MID);      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1592      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      if(zoom == priv->scale.zoom)
1593  }          return;
1594    
1595  #ifndef OSD_COLOR      priv->scale.zoom = zoom;
1596  /* if no color has been specified we just use the gdks default colors */  
1597  static void      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1598  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,  
1599                         GdkColor *fg, GdkColor *disabled) {      /* first fill with transparency */
1600      if(enabled)  gdk_cairo_set_source_color(cr, fg);      cairo_t *cr = cairo_create(priv->scale.surface);
1601      else         gdk_cairo_set_source_color(cr, disabled);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1602      cairo_set_line_width (cr, width);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1603        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1604        cairo_paint(cr);
1605        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1606    
1607        /* determine the size of the scale width in meters */
1608        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1609    
1610        /* scale this to useful values */
1611        int exp = logf(width)*M_LOG10E;
1612        int mant = width/pow(10,exp);
1613        int width_metric = mant * pow(10,exp);
1614        char *dist_str = NULL;
1615        if(width_metric<1000)
1616            dist_str = g_strdup_printf("%u m", width_metric);
1617        else
1618            dist_str = g_strdup_printf("%u km", width_metric/1000);
1619        width_metric /= m_per_pix;
1620    
1621        /* and now the hard part: scale for useful imperial values :-( */
1622        /* try to convert to feet, 1ft == 0.3048 m */
1623        width /= 0.3048;
1624        float imp_scale = 0.3048;
1625        char *dist_imp_unit = "ft";
1626    
1627        if(width >= 100) {
1628            /* 1yd == 3 feet */
1629            width /= 3.0;
1630            imp_scale *= 3.0;
1631            dist_imp_unit = "yd";
1632    
1633            if(width >= 1760.0) {
1634                /* 1mi == 1760 yd */
1635                width /= 1760.0;
1636                imp_scale *= 1760.0;
1637                dist_imp_unit = "mi";
1638            }
1639        }
1640    
1641        /* also convert this to full tens/hundreds */
1642        exp = logf(width)*M_LOG10E;
1643        mant = width/pow(10,exp);
1644        int width_imp = mant * pow(10,exp);
1645        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1646    
1647        /* convert back to pixels */
1648        width_imp *= imp_scale;
1649        width_imp /= m_per_pix;
1650    
1651        cairo_select_font_face (cr, "Sans",
1652                                CAIRO_FONT_SLANT_NORMAL,
1653                                CAIRO_FONT_WEIGHT_BOLD);
1654        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1655        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1656    
1657        cairo_text_extents_t extents;
1658        cairo_text_extents (cr, dist_str, &extents);
1659    
1660        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1661        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1662        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1663        cairo_text_path (cr, dist_str);
1664      cairo_stroke (cr);      cairo_stroke (cr);
1665  }      cairo_move_to (cr, 2*OSD_SCALE_FD,
1666  #else                     OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1667  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);  
1668      cairo_stroke (cr);      cairo_stroke (cr);
 }  
 #endif  
1669    
1670  #ifdef OSD_SHADOW_ENABLE      cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1671  static void      cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1672  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {      cairo_show_text (cr, dist_str);
1673      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);      cairo_move_to (cr, 2*OSD_SCALE_FD,
1674      cairo_set_line_width (cr, width);                     OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1675      cairo_stroke (cr);      cairo_show_text (cr, dist_str_imp);
1676    
1677        g_free(dist_str);
1678        g_free(dist_str_imp);
1679    
1680        /* draw white line */
1681        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1682        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1683        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1684        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1685        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1686        cairo_rel_line_to (cr, width_metric, 0);
1687        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1688        cairo_stroke(cr);
1689        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1690        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1691        cairo_rel_line_to (cr, width_imp, 0);
1692        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1693        cairo_stroke(cr);
1694    
1695        /* draw black line */
1696        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1697        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1698        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1699        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1700        cairo_rel_line_to (cr, width_metric, 0);
1701        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1702        cairo_stroke(cr);
1703        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1704        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1705        cairo_rel_line_to (cr, width_imp, 0);
1706        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1707        cairo_stroke(cr);
1708    
1709        cairo_destroy(cr);
1710        FOUT;
1711  }  }
1712  #endif  #endif
1713    
1714  static void  static void
1715  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_controls(osm_gps_map_osd_t *osd)
1716    {
1717        FIN;
1718      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1719    
1720        if(priv->controls.rendered
1721    #ifdef OSD_GPS_BUTTON
1722           && (priv->controls.gps_enabled == (osd->cb != NULL))
1723    #endif
1724           )
1725            return;
1726    
1727    #ifdef OSD_GPS_BUTTON
1728        priv->controls.gps_enabled = (osd->cb != NULL);
1729    #endif
1730        priv->controls.rendered = TRUE;
1731    
1732    #ifndef OSD_COLOR
1733        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1734        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1735        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1736    #endif
1737    
1738      /* first fill with transparency */      /* first fill with transparency */
1739      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1740      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1741      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);
1742      cairo_paint(cr);      cairo_paint(cr);
   
1743      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1744    
1745      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1746  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1747      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1748      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1749      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);  #ifndef OSD_NO_DPAD
1750      osm_gps_map_osd_shape_shadow(cr);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1751        osd_shape_shadow(cr);
1752    #endif
1753  #endif  #endif
1754    
1755      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1756    
1757      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1758  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1759      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1760  #else  #else
1761      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1762  #endif  #endif
1763      osm_gps_map_osd_dpad_shape(cr, x, y);  #ifndef OSD_NO_DPAD
1764        osd_dpad_shape(cr, 1, 1);
1765  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1766      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1767  #else  #else
1768      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1769    #endif
1770  #endif  #endif
1771    
1772      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1773    
1774  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1775      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1776      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);
1777      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #ifndef OSD_NO_DPAD
1778      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);
1779      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  #endif
1780        cairo_stroke(cr);
1781    #ifdef OSD_GPS_BUTTON
1782        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1783        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1784        cairo_stroke(cr);
1785    #endif
1786  #endif  #endif
1787    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
1788  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1789      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1790  #else  #else
1791      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1792  #endif  #endif
1793      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_zoom_labels(cr, 1, 1);
1794    #ifndef OSD_NO_DPAD
1795        osd_dpad_labels(cr, 1, 1);
1796    #endif
1797        cairo_stroke(cr);
1798    
1799  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1800      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);
1801  #else  #else
1802      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1803  #endif  #endif
1804    #ifdef OSD_GPS_BUTTON
1805        osd_dpad_gps(cr, 1, 1);
1806    #endif
1807        cairo_stroke(cr);
1808    
1809      cairo_destroy(cr);      cairo_destroy(cr);
1810  }  }
1811    
1812  static void  static void
1813  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)  osd_render(osm_gps_map_osd_t *osd)
1814    {
1815        /* this function is actually called pretty often since the */
1816        /* OSD contents may have changed (due to a coordinate/zoom change). */
1817        /* The different OSD parts have to make sure that they don't */
1818        /* render unneccessarily often and thus waste CPU power */
1819    
1820        osd_render_controls(osd);
1821    
1822    #ifdef OSD_SOURCE_SEL
1823        osd_render_source_sel(osd, FALSE);
1824    #endif
1825    
1826    #ifdef OSD_SCALE
1827        osd_render_scale(osd);
1828    #endif
1829    
1830    #ifdef OSD_CROSSHAIR
1831        osd_render_crosshair(osd);
1832    #endif
1833    
1834    #ifdef OSD_NAV
1835        osd_render_nav(osd);
1836    #endif
1837    
1838    #ifdef OSD_COORDINATES
1839        osd_render_coordinates(osd);
1840    #endif
1841    }
1842    
1843    static void
1844    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1845  {  {
1846      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1847    
1848      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1849      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1850      if(!priv->overlay) {      if(!priv->controls.surface) {
1851          /* create overlay ... */          /* create overlay ... */
1852          priv->overlay =          priv->controls.surface =
1853              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1854    
1855            priv->controls.rendered = FALSE;
1856    #ifdef OSD_GPS_BUTTON
1857            priv->controls.gps_enabled = FALSE;
1858    #endif
1859    
1860    #ifdef OSD_SOURCE_SEL
1861            /* the initial OSD state is alway not-expanded */
1862            priv->source_sel.surface =
1863                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1864                                               OSD_S_W+2, OSD_S_H+2);
1865            priv->source_sel.rendered = FALSE;
1866    #endif
1867    
1868    #ifdef OSD_SCALE
1869            priv->scale.surface =
1870                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1871                                           OSD_SCALE_W, OSD_SCALE_H);
1872            priv->scale.zoom = -1;
1873    #endif
1874    
1875    #ifdef OSD_CROSSHAIR
1876            priv->crosshair.surface =
1877                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1878                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1879            priv->crosshair.rendered = FALSE;
1880    #endif
1881    
1882    #ifdef OSD_COORDINATES
1883            priv->coordinates.surface =
1884                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1885                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1886    
1887            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1888    #endif
1889    
1890          /* ... and render it */          /* ... and render it */
1891          osm_gps_map_osd_render(osd);          osd_render(osd);
1892      }      }
1893    
1894      // now draw this onto the original context      // now draw this onto the original context
1895      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1896      cairo_set_source_surface(cr, priv->overlay, OSD_X, OSD_Y);  
1897        gint x, y;
1898    
1899    #ifdef OSD_SCALE
1900        x =  OSD_X;
1901        y = -OSD_Y;
1902        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1903        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1904    
1905        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1906        cairo_paint(cr);
1907    #endif
1908    
1909    #ifdef OSD_CROSSHAIR
1910        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1911        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1912    
1913        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1914        cairo_paint(cr);
1915    #endif
1916    
1917    #ifdef OSD_NAV
1918        if(priv->nav.surface) {
1919            x =  OSD_X;
1920            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1921            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1922    
1923            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1924            cairo_paint(cr);
1925        }
1926    #endif
1927    
1928    #ifdef OSD_COORDINATES
1929        x = -OSD_X;
1930        y = -OSD_Y;
1931        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1932        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1933    
1934        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1935      cairo_paint(cr);      cairo_paint(cr);
1936    #endif
1937    
1938    #ifdef OSD_BALLOON
1939        if(priv->balloon.surface) {
1940    
1941            /* convert given lat lon into screen coordinates */
1942            gint x, y;
1943            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1944                                          priv->balloon.lat, priv->balloon.lon,
1945                                          &x, &y);
1946    
1947            /* check if balloon needs to be rerendered */
1948            osd_render_balloon(osd);
1949    
1950            cairo_set_source_surface(cr, priv->balloon.surface,
1951                                     x + priv->balloon.offset_x,
1952                                     y + priv->balloon.offset_y);
1953            cairo_paint(cr);
1954        }
1955    #endif
1956    
1957        x = OSD_X;
1958        if(x < 0)
1959            x += osd->widget->allocation.width - OSD_W;
1960    
1961        y = OSD_Y;
1962        if(y < 0)
1963            y += osd->widget->allocation.height - OSD_H;
1964    
1965        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1966        cairo_paint(cr);
1967    
1968    #ifdef OSD_SOURCE_SEL
1969        if(!priv->source_sel.handler_id) {
1970            /* the OSD source selection is not being animated */
1971            if(!priv->source_sel.expanded)
1972                x = osd->widget->allocation.width - OSD_S_W;
1973            else
1974                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1975        } else
1976            x = priv->source_sel.shift;
1977    
1978        y = OSD_S_Y;
1979        if(OSD_S_Y < 0) {
1980            if(!priv->source_sel.expanded)
1981                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1982            else
1983                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1984        }
1985    
1986        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1987        cairo_paint(cr);
1988    #endif
1989    
1990      cairo_destroy(cr);      cairo_destroy(cr);
1991        FOUT;
1992  }  }
1993    
1994  static void  static void
1995  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1996  {  {
1997        FIN;
1998      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1999    
2000      if (priv->overlay)      if (priv->controls.surface)
2001           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
2002    
2003    #ifdef OSD_SOURCE_SEL
2004        if(priv->source_sel.handler_id)
2005            gtk_timeout_remove(priv->source_sel.handler_id);
2006    
2007        if (priv->source_sel.surface)
2008             cairo_surface_destroy(priv->source_sel.surface);
2009    #endif
2010    
2011    #ifdef OSD_SCALE
2012        if (priv->scale.surface)
2013             cairo_surface_destroy(priv->scale.surface);
2014    #endif
2015    
2016    #ifdef OSD_CROSSHAIR
2017        if (priv->crosshair.surface)
2018             cairo_surface_destroy(priv->crosshair.surface);
2019    #endif
2020    
2021    #ifdef OSD_NAV
2022        if (priv->nav.surface)
2023             cairo_surface_destroy(priv->nav.surface);
2024    #endif
2025    
2026    #ifdef OSD_COORDINATES
2027        if (priv->coordinates.surface)
2028             cairo_surface_destroy(priv->coordinates.surface);
2029    #endif
2030    
2031    #ifdef OSD_BALLOON
2032        if (priv->balloon.surface)
2033             cairo_surface_destroy(priv->balloon.surface);
2034    #endif
2035    
2036      g_free(priv);      g_free(priv);
2037        FOUT;
2038    }
2039    
2040    static gboolean
2041    osd_busy(osm_gps_map_osd_t *osd)
2042    {
2043        FIN;
2044    #ifdef OSD_SOURCE_SEL
2045        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2046        return (priv->source_sel.handler_id != 0);
2047    #else
2048        return FALSE;
2049    #endif
2050    }
2051    
2052    static osd_button_t
2053    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2054        FIN;
2055        return osd_check_int(osd, TRUE, down, x, y);
2056  }  }
2057    
2058  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2059      .draw       = osm_gps_map_osd_draw,      .widget     = NULL,
2060      .check      = osm_gps_map_osd_check,  
2061      .render     = osm_gps_map_osd_render,      .draw       = osd_draw,
2062      .free       = osm_gps_map_osd_free,      .check      = osd_check,
2063        .render     = osd_render,
2064        .free       = osd_free,
2065        .busy       = osd_busy,
2066    
2067      .cb         = NULL,      .cb         = NULL,
2068      .data       = NULL,      .data       = NULL,
# Line 416  static osm_gps_map_osd_t osd_classic = { Line 2074  static osm_gps_map_osd_t osd_classic = {
2074  void  void
2075  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2076  {  {
2077        FIN;
2078      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);
2079    
2080      osd_classic.priv = priv;  #ifdef OSD_BALLOON
2081        priv->balloon.lat = OSM_GPS_MAP_INVALID;
2082        priv->balloon.lon = OSM_GPS_MAP_INVALID;
2083    #endif
2084    
2085      /* 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];  
2086    
2087      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2088        FOUT;
2089  }  }
2090    
2091    #ifdef OSD_GPS_BUTTON
2092  /* 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 */
2093  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2094  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2095                                     gpointer data) {
2096        FIN;
2097      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
2098      g_return_if_fail (osd);      g_return_if_fail (osd);
2099    
2100      osd->cb = cb;      osd->cb = cb;
# Line 444  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2105  void osm_gps_map_osd_enable_gps (OsmGpsM
2105      osd->render(osd);      osd->render(osd);
2106    
2107      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2108        FOUT;
2109    }
2110    #endif
2111    
2112    osd_button_t
2113    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2114        FIN;
2115        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2116        g_return_val_if_fail (osd, OSD_NONE);
2117    
2118        return osd_check_int(osd, FALSE, TRUE, x, y);
2119  }  }
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  Added in v.146