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

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 75 by harbaum, Mon Aug 24 12:57:15 2009 UTC revision 122 by harbaum, Mon Sep 21 13:15:25 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 <math.h>    // M_PI/cos()
23    
24  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
25  /* OSM_GPS_MAP_OSD_DIAMETER */  /* OSD_DIAMETER */
26    /* OSD_X, OSD_Y */
27    
28    #define OSD_NAV
29    
30  #ifndef USE_CAIRO  #ifndef USE_CAIRO
31  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
# Line 31  Line 34 
34  #include <cairo.h>  #include <cairo.h>
35    
36  #include "osm-gps-map.h"  #include "osm-gps-map.h"
37    #include "converter.h"
38  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
39    
40  //the osd controls  //the osd controls
41  typedef struct {  typedef struct {
42      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
43      cairo_surface_t *overlay;      struct {
44            cairo_surface_t *surface;
45            gboolean rendered;
46    #ifdef OSD_GPS_BUTTON
47            gboolean gps_enabled;
48    #endif
49        } controls;
50    
51    #ifdef OSD_BALLOON
52        //a balloon with additional info
53        struct {
54            cairo_surface_t *surface;
55            int orientation, offset_x, offset_y;
56    
57            gboolean just_created;
58            float lat, lon;
59            OsmGpsMapRect_t rect;
60    
61            /* function called to have the user app draw the contents */
62            OsmGpsMapBalloonCallback cb;
63            gpointer data;
64        } balloon;
65    #endif
66    
67    #ifdef OSD_SCALE
68        struct {
69            cairo_surface_t *surface;
70            int zoom;
71        } scale;
72    #endif
73    
74    #ifdef OSD_CROSSHAIR
75        struct {
76            cairo_surface_t *surface;
77            gboolean rendered;
78        } crosshair;
79    #endif
80    
81    #ifdef OSD_NAV
82        struct {
83            cairo_surface_t *surface;
84        } nav;
85    #endif
86    
87    #ifdef OSD_COORDINATES
88        struct {
89            cairo_surface_t *surface;
90            float lat, lon;
91        } coordinates;
92    #endif
93    
94      GdkColor bg, fg, da;  #ifdef OSD_SOURCE_SEL
95        struct {
96            /* values to handle the "source" menu */
97            cairo_surface_t *surface;
98            gboolean expanded;
99            gint shift, dir, count;
100            gint handler_id;
101            gint width, height;
102            gboolean rendered;
103        } source_sel;
104    #endif
105    
106  } osd_priv_t;  } osd_priv_t;
107    
108    #ifdef OSD_BALLOON
109    /* most visual effects are hardcoded by now, but may be made */
110    /* available via properties later */
111    #ifndef BALLOON_AREA_WIDTH
112    #define BALLOON_AREA_WIDTH           290
113    #endif
114    #ifndef BALLOON_AREA_HEIGHT
115    #define BALLOON_AREA_HEIGHT           75
116    #endif
117    #ifndef BALLOON_CORNER_RADIUS
118    #define BALLOON_CORNER_RADIUS         10
119    #endif
120    
121    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
122    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
123    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
124    #define BALLOON_TRANSPARENCY         0.8
125    #define POINTER_HEIGHT                20
126    #define POINTER_FOOT_WIDTH            20
127    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
128    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
129    #define BALLOON_SHADOW_TRANSPARENCY  0.2
130    
131    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
132    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
133    
134    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
135    
136    
137    /* draw the bubble shape. this is used twice, once for the shape and once */
138    /* for the shadow */
139    static void
140    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
141           gboolean bottom, int px, int py, int px0, int px1) {
142    
143        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
144        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
145                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
146        if(!bottom) {
147            /* insert top pointer */
148            cairo_line_to (cr, px1, y0);
149            cairo_line_to (cr, px, py);
150            cairo_line_to (cr, px0, y0);
151        }
152    
153        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
154        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
155                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
156        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
157        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
158                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
159        if(bottom) {
160            /* insert bottom pointer */
161            cairo_line_to (cr, px0, y1);
162            cairo_line_to (cr, px, py);
163            cairo_line_to (cr, px1, y1);
164        }
165    
166        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
167        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
168                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
169    
170        cairo_close_path (cr);
171    }
172    
173    static void
174    osd_render_balloon(osm_gps_map_osd_t *osd) {
175        osd_priv_t *priv = (osd_priv_t*)osd->priv;
176    
177        /* get zoom */
178        gint zoom;
179        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
180    
181        /* ------- convert given coordinate into screen position --------- */
182        gint xs, ys;
183        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
184                                          priv->balloon.lat, priv->balloon.lon,
185                                          &xs, &ys);
186    
187        gint x0 = 1, y0 = 1;
188    
189        /* check position of this relative to screen center to determine */
190        /* pointer direction ... */
191        int pointer_x, pointer_x0, pointer_x1;
192        int pointer_y;
193    
194        /* ... and calculate position */
195        int orientation = 0;
196        if(xs > osd->widget->allocation.width/2) {
197            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
198            pointer_x = x0 - priv->balloon.offset_x;
199            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
200            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
201            orientation |= 1;
202        } else {
203            priv->balloon.offset_x = -POINTER_OFFSET;
204            pointer_x = x0 - priv->balloon.offset_x;
205            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
206            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
207        }
208    
209        gboolean bottom = FALSE;
210        if(ys > osd->widget->allocation.height/2) {
211            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
212            pointer_y = y0 - priv->balloon.offset_y;
213            bottom = TRUE;
214            orientation |= 2;
215        } else {
216            priv->balloon.offset_y = 0;
217            pointer_y = y0 - priv->balloon.offset_y;
218            y0 += POINTER_HEIGHT;
219        }
220    
221        /* if required orientation equals current one, then don't render */
222        /* anything */
223        if(orientation == priv->balloon.orientation)
224            return;
225    
226        priv->balloon.orientation = orientation;
227    
228        /* calculate bottom/right of box */
229        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
230    
231        /* save balloon screen coordinates for later use */
232        priv->balloon.rect.x = x0 + BALLOON_BORDER;
233        priv->balloon.rect.y = y0 + BALLOON_BORDER;
234        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
235        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
236    
237        cairo_t *cr = cairo_create(priv->balloon.surface);
238        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
239        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
240        cairo_paint(cr);
241        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
242    
243        /* --------- draw shadow --------------- */
244        osm_gps_map_draw_balloon_shape (cr,
245                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
246                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
247                     bottom, pointer_x, pointer_y,
248                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
249    
250        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
251        cairo_fill_preserve (cr);
252        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
253        cairo_set_line_width (cr, 0);
254        cairo_stroke (cr);
255    
256        /* --------- draw main shape ----------- */
257        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
258                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
259    
260        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
261        cairo_fill_preserve (cr);
262        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
263        cairo_set_line_width (cr, 1);
264        cairo_stroke (cr);
265    
266        if (priv->balloon.cb) {
267            /* clip in case application tries to draw in */
268                /* exceed of the balloon */
269            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
270                             priv->balloon.rect.w, priv->balloon.rect.h);
271            cairo_clip (cr);
272            cairo_new_path (cr);  /* current path is not
273                                     consumed by cairo_clip() */
274    
275            priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
276        }
277    
278        cairo_destroy(cr);
279    }
280    
281    /* return true if balloon is being displayed and if */
282    /* the given coordinate is within this balloon */
283    static gboolean
284    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y)
285    {
286        osd_priv_t *priv = (osd_priv_t*)osd->priv;
287    
288        if(!priv->balloon.surface)
289            return FALSE;
290    
291        gint xs, ys;
292        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
293                                          priv->balloon.lat, priv->balloon.lon,
294                                          &xs, &ys);
295    
296        xs += priv->balloon.rect.x + priv->balloon.offset_x;
297        ys += priv->balloon.rect.y + priv->balloon.offset_y;
298    
299        gboolean is_in =
300            (x > xs) && (x < xs + priv->balloon.rect.w) &&
301            (y > ys) && (y < ys + priv->balloon.rect.h);
302    
303        /* handle the fact that the balloon may have been created by the */
304        /* button down event */
305        if(!is_in && !down && !priv->balloon.just_created) {
306            /* the user actually clicked outside the balloon */
307    
308            /* close the balloon! */
309            osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
310        }
311    
312        return is_in;
313    }
314    
315    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
316        g_return_if_fail (OSM_IS_GPS_MAP (map));
317    
318        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
319        g_return_if_fail (osd);
320    
321        osd_priv_t *priv = (osd_priv_t*)osd->priv;
322        g_return_if_fail (priv);
323    
324        if(priv->balloon.surface) {
325            cairo_surface_destroy(priv->balloon.surface);
326            priv->balloon.surface = NULL;
327            priv->balloon.lat = OSM_GPS_MAP_INVALID;
328            priv->balloon.lon = OSM_GPS_MAP_INVALID;
329        }
330        osm_gps_map_redraw(map);
331    }
332    
333    void
334    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
335                                  OsmGpsMapBalloonCallback cb, gpointer data) {
336        g_return_if_fail (OSM_IS_GPS_MAP (map));
337    
338        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
339        g_return_if_fail (osd);
340    
341        osd_priv_t *priv = (osd_priv_t*)osd->priv;
342        g_return_if_fail (priv);
343    
344        osm_gps_map_osd_clear_balloon (map);
345    
346        /* allocate balloon surface */
347        priv->balloon.surface =
348            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
349                                       BALLOON_W+2, BALLOON_H+2);
350    
351        priv->balloon.lat = latitude;
352        priv->balloon.lon = longitude;
353        priv->balloon.cb = cb;
354        priv->balloon.data = data;
355        priv->balloon.just_created = TRUE;
356    
357        priv->balloon.orientation = -1;
358    
359        osd_render_balloon(osd);
360    
361        osm_gps_map_redraw(map);
362    }
363    
364    #endif // OSD_BALLOON
365    
366  /* position and extent of bounding box */  /* position and extent of bounding box */
367    #ifndef OSD_X
368  #define OSD_X      (10)  #define OSD_X      (10)
369    #endif
370    
371    #ifndef OSD_Y
372  #define OSD_Y      (10)  #define OSD_Y      (10)
373    #endif
374    
375  /* parameters of the direction shape */  /* parameters of the direction shape */
376  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
377  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
378  #else  #else
379  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
380  #endif  #endif
381  #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
382  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 67  typedef struct { Line 393  typedef struct {
393  #define OSD_SHADOW (0)  #define OSD_SHADOW (0)
394  #endif  #endif
395    
396    /* normally the GPS button is in the center of the dpad. if there's */
397    /* no dpad it will go into the zoom area */
398    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
399    #define Z_GPS  1
400    #else
401    #define Z_GPS  0
402    #endif
403    
404  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
405  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
406    #if !Z_GPS
407  #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)
408    #else
409    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
410    #endif
411    
412  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
413  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
414  #endif  #endif
415    
416  #define Z_TOP    (2 * D_RAD + Z_STEP)  #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
417    
418  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
419  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
420  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
421  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
422    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
423    
424  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
425  static void  static void
426  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
427  {  {
428      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
429      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 432  osm_gps_map_osd_zoom_shape(cairo_t *cr,
432      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);
433  }  }
434    
435    /* ------------------- color/shadow functions ----------------- */
436    
437    #ifndef OSD_COLOR
438    /* if no color has been specified we just use the gdks default colors */
439    static void
440    osd_labels(cairo_t *cr, gint width, gboolean enabled,
441                           GdkColor *fg, GdkColor *disabled) {
442        if(enabled)  gdk_cairo_set_source_color(cr, fg);
443        else         gdk_cairo_set_source_color(cr, disabled);
444        cairo_set_line_width (cr, width);
445    }
446    #else
447    static void
448    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
449        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
450        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
451        cairo_set_line_width (cr, width);
452    }
453    #endif
454    
455    #ifdef OSD_SHADOW_ENABLE
456    static void
457    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
458        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
459        cairo_set_line_width (cr, width);
460    }
461    #endif
462    
463    #ifndef OSD_NO_DPAD
464  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
465  static void  static void
466  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
467  {  {
468      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);
469  }  }
470    #endif
471    
472    #ifdef OSD_SHADOW_ENABLE
473    static void
474    osd_shape_shadow(cairo_t *cr) {
475        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
476        cairo_fill (cr);
477        cairo_stroke (cr);
478    }
479    #endif
480    
481    #ifndef OSD_COLOR
482    /* if no color has been specified we just use the gdks default colors */
483    static void
484    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
485        gdk_cairo_set_source_color(cr, bg);
486        cairo_fill_preserve (cr);
487        gdk_cairo_set_source_color(cr, fg);
488        cairo_set_line_width (cr, 1);
489        cairo_stroke (cr);
490    }
491    #else
492    static void
493    osd_shape(cairo_t *cr) {
494        cairo_set_source_rgb (cr, OSD_COLOR_BG);
495        cairo_fill_preserve (cr);
496        cairo_set_source_rgb (cr, OSD_COLOR);
497        cairo_set_line_width (cr, 1);
498        cairo_stroke (cr);
499    }
500    #endif
501    
502    
503  static gboolean  static gboolean
504  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)
# Line 106  osm_gps_map_in_circle(gint x, gint y, gi Line 506  osm_gps_map_in_circle(gint x, gint y, gi
506      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
507  }  }
508    
509    #ifndef OSD_NO_DPAD
510  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
511  static osd_button_t  static osd_button_t
512  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
513  {  {
514      /* within entire dpad circle */      /* within entire dpad circle */
515      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))
516      {      {
517          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
518          x -= (OSD_X + D_RAD);          x -= D_RAD;
519          y -= (OSD_Y + D_RAD);          y -= D_RAD;
520    
521    #ifdef OSD_GPS_BUTTON
522          /* check for dpad center goes here! */          /* check for dpad center goes here! */
523          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))
524              return OSD_GPS;              return OSD_GPS;
525    #endif
526    
527          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
528              return OSD_UP;              return OSD_UP;
# Line 137  osm_gps_map_osd_check_dpad(gint x, gint Line 540  osm_gps_map_osd_check_dpad(gint x, gint
540      }      }
541      return OSD_NONE;      return OSD_NONE;
542  }  }
543    #endif
544    
545  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
546  static osd_button_t  static osd_button_t
547  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
548      if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {      if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
549    
550          /* within circle around (-) label */          /* within circle around (-) label */
551          if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD))
             return OSD_OUT;  
   
         /* between center of (-) button and center of entire zoom control area */  
         if(x > OSD_LEFT && x < OSD_X + D_RAD)  
552              return OSD_OUT;              return OSD_OUT;
553    
554          /* within circle around (+) label */          /* within circle around (+) label */
555          if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD))
556              return OSD_IN;              return OSD_IN;
557    
558    #if Z_GPS == 1
559            /* within square around center */
560            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
561                return OSD_GPS;
562    #endif
563    
564            /* between center of (-) button and center of entire zoom control area */
565            if(x > OSD_LEFT && x < D_RAD)
566                return OSD_OUT;
567    
568          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
569          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
570              return OSD_IN;              return OSD_IN;
571      }      }
572    
573      return OSD_NONE;      return OSD_NONE;
574  }  }
575    
576  static osd_button_t  #ifdef OSD_SOURCE_SEL
 osm_gps_map_osd_check(gint x, gint y) {  
     osd_button_t but = OSD_NONE;  
577    
578      /* first do a rough test for the OSD area. */  /* place source selection at right border */
579      /* this is just to avoid an unnecessary detailed test */  #define OSD_S_RAD (Z_RAD)
580      if(x > OSD_X && x < OSD_X + OSD_W &&  #define OSD_S_X   (-OSD_X)
581         y > OSD_Y && y < OSD_Y + OSD_H) {  #define OSD_S_Y   (OSD_Y)
582          but = osm_gps_map_osd_check_dpad(x, y);  #define OSD_S_PW  (2 * Z_RAD)
583    #define OSD_S_W   (OSD_S_PW)
584    #define OSD_S_PH  (2 * Z_RAD)
585    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
586    
587    /* size of usable area when expanded */
588    #define OSD_S_AREA_W (priv->source_sel.width)
589    #define OSD_S_AREA_H (priv->source_sel.height)
590    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
591    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
592    
593    /* internal value to draw the arrow on the "puller" */
594    #define OSD_S_D0  (OSD_S_RAD/2)
595    #ifndef OSD_FONT_SIZE
596    #define OSD_FONT_SIZE 16.0
597    #endif
598    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
599    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
600    
601          if(but == OSD_NONE)  /* draw the shape of the source selection OSD, either only the puller (not expanded) */
602              but = osm_gps_map_osd_check_zoom(x, y);  /* or the entire menu incl. the puller (expanded) */
603    static void
604    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
605        if(!priv->source_sel.expanded) {
606            /* just draw the puller */
607            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
608            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
609            cairo_line_to (cr, x + OSD_S_PW, y);
610        } else {
611            /* draw the puller and the area itself */
612            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
613            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
614            if(OSD_S_Y > 0) {
615                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
616                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
617            } else {
618                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
619                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
620                cairo_line_to (cr, x + OSD_S_PW, y);
621            }
622            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
623            cairo_close_path (cr);
624      }      }
625    }
626    
627      return but;  static void
628    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
629        osd_priv_t *priv = (osd_priv_t*)osd->priv;
630    
631        int py = offset + OSD_S_RAD - OSD_S_D0;
632    
633        if(!priv->source_sel.expanded) {
634            /* draw the "puller" open (<) arrow */
635            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
636            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
637            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
638        } else {
639            if(OSD_S_Y < 0)
640                py += OSD_S_AREA_H - OSD_S_PH;
641    
642            /* draw the "puller" close (>) arrow */
643            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
644            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
645            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
646            cairo_stroke(cr);
647    
648            /* don't draw a shadow for the text content */
649            if(offset == 1) {
650                gint source;
651                g_object_get(osd->widget, "map-source", &source, NULL);
652    
653                cairo_select_font_face (cr, "Sans",
654                                        CAIRO_FONT_SLANT_NORMAL,
655                                        CAIRO_FONT_WEIGHT_BOLD);
656                cairo_set_font_size (cr, OSD_FONT_SIZE);
657    
658                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
659                    OSM_GPS_MAP_SOURCE_LAST;
660                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
661                    cairo_text_extents_t extents;
662                    const char *src = osm_gps_map_source_get_friendly_name(i);
663                    cairo_text_extents (cr, src, &extents);
664    
665                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
666                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
667    
668                    /* draw filled rectangle if selected */
669                    if(source == i) {
670                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
671                                        y - OSD_TEXT_SKIP,
672                                        priv->source_sel.width - OSD_TEXT_BORDER,
673                                        step + OSD_TEXT_SKIP);
674                        cairo_fill(cr);
675    
676                        /* temprarily draw with background color */
677    #ifndef OSD_COLOR
678                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
679                        gdk_cairo_set_source_color(cr, &bg);
680    #else
681                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
682    #endif
683                    }
684    
685                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
686                    cairo_show_text (cr, src);
687    
688                    /* restore color */
689                    if(source == i) {
690    #ifndef OSD_COLOR
691                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
692                        gdk_cairo_set_source_color(cr, &fg);
693    #else
694                        cairo_set_source_rgb (cr, OSD_COLOR);
695    #endif
696                    }
697                }
698            }
699        }
700  }  }
701    
702    static void
703    osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
704        osd_priv_t *priv = (osd_priv_t*)osd->priv;
705    
706        if(priv->source_sel.rendered && !force_rerender)
707            return;
708    
709        priv->source_sel.rendered = TRUE;
710    
711    #ifndef OSD_COLOR
712        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
713        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
714        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
715    #endif
716    
717        /* draw source selector */
718        cairo_t *cr = cairo_create(priv->source_sel.surface);
719        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
720        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
721        cairo_paint(cr);
722        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
723    
724  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
725  static void      osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
726  osm_gps_map_osd_shape_shadow(cairo_t *cr) {      osd_shape_shadow(cr);
     cairo_set_source_rgba (cr, 0, 0, 0, 0.2);  
     cairo_fill (cr);  
     cairo_stroke (cr);  
 }  
727  #endif  #endif
728    
729        osd_source_shape(priv, cr, 1, 1);
730  #ifndef OSD_COLOR  #ifndef OSD_COLOR
731  /* if no color has been specified we just use the gdks default colors */      osd_shape(cr, &bg, &fg);
732  static void  #else
733  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {      osd_shape(cr);
734      gdk_cairo_set_source_color(cr, bg);  #endif
735      cairo_fill_preserve (cr);  
736      gdk_cairo_set_source_color(cr, fg);  #ifdef OSD_SHADOW_ENABLE
737      cairo_set_line_width (cr, 1);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
738        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
739      cairo_stroke (cr);      cairo_stroke (cr);
740  }  #endif
741    #ifndef OSD_COLOR
742        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
743  #else  #else
744  static void      osd_labels(cr, Z_RAD/3, TRUE);
745  osm_gps_map_osd_shape(cairo_t *cr) {  #endif
746      cairo_set_source_rgb (cr, OSD_COLOR_BG);      osd_source_content(osd, cr, 1);
     cairo_fill_preserve (cr);  
     cairo_set_source_rgb (cr, OSD_COLOR);  
     cairo_set_line_width (cr, 1);  
747      cairo_stroke (cr);      cairo_stroke (cr);
748    
749        cairo_destroy(cr);
750    }
751    
752    /* re-allocate the buffer used to draw the menu. This is used */
753    /* to collapse/expand the buffer */
754    static void
755    osd_source_reallocate(osm_gps_map_osd_t *osd) {
756        osd_priv_t *priv = (osd_priv_t*)osd->priv;
757    
758        /* re-allocate offscreen bitmap */
759        g_assert (priv->source_sel.surface);
760    
761        int w = OSD_S_W, h = OSD_S_H;
762        if(priv->source_sel.expanded) {
763            cairo_text_extents_t extents;
764    
765            /* determine content size */
766            cairo_t *cr = cairo_create(priv->source_sel.surface);
767            cairo_select_font_face (cr, "Sans",
768                                    CAIRO_FONT_SLANT_NORMAL,
769                                    CAIRO_FONT_WEIGHT_BOLD);
770            cairo_set_font_size (cr, OSD_FONT_SIZE);
771    
772            /* calculate menu size */
773            int i, max_h = 0, max_w = 0;
774            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
775                const char *src = osm_gps_map_source_get_friendly_name(i);
776                cairo_text_extents (cr, src, &extents);
777    
778                if(extents.width > max_w) max_w = extents.width;
779                if(extents.height > max_h) max_h = extents.height;
780            }
781            cairo_destroy(cr);
782    
783            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
784            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
785                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
786    
787            w = OSD_S_EXP_W;
788            h = OSD_S_EXP_H;
789        }
790    
791        cairo_surface_destroy(priv->source_sel.surface);
792        priv->source_sel.surface =
793            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
794    
795        osd_render_source_sel(osd, TRUE);
796    }
797    
798    #define OSD_HZ      15
799    #define OSD_TIME    500
800    
801    static gboolean osd_source_animate(gpointer data) {
802        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
803        osd_priv_t *priv = (osd_priv_t*)osd->priv;
804        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
805        gboolean done = FALSE;
806        priv->source_sel.count += priv->source_sel.dir;
807    
808        /* shifting in */
809        if(priv->source_sel.dir < 0) {
810            if(priv->source_sel.count <= 0) {
811                priv->source_sel.count = 0;
812                done = TRUE;
813            }
814        } else {
815            if(priv->source_sel.count >= 1000) {
816                priv->source_sel.expanded = FALSE;
817                osd_source_reallocate(osd);
818    
819                priv->source_sel.count = 1000;
820                done = TRUE;
821            }
822        }
823    
824    
825        /* count runs linearly from 0 to 1000, map this nicely onto a position */
826    
827        /* nice sinoid mapping */
828        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
829        priv->source_sel.shift =
830            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
831            m * diff;
832    
833        /* make sure the screen is updated */
834        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
835    
836        /* stop animation if done */
837        if(done)
838            priv->source_sel.handler_id = 0;
839    
840        return !done;
841    }
842    
843    /* switch between expand and collapse mode of source selection */
844    static void
845    osd_source_toggle(osm_gps_map_osd_t *osd)
846    {
847        osd_priv_t *priv = (osd_priv_t*)osd->priv;
848    
849        /* ignore clicks while animation is running */
850        if(priv->source_sel.handler_id)
851            return;
852    
853        /* expand immediately, collapse is handle at the end of the */
854        /* collapse animation */
855        if(!priv->source_sel.expanded) {
856            priv->source_sel.expanded = TRUE;
857            osd_source_reallocate(osd);
858    
859            priv->source_sel.count = 1000;
860            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
861            priv->source_sel.dir = -1000/OSD_HZ;
862        } else {
863            priv->source_sel.count =  0;
864            priv->source_sel.shift = osd->widget->allocation.width -
865                OSD_S_EXP_W + OSD_S_X;
866            priv->source_sel.dir = +1000/OSD_HZ;
867        }
868    
869        /* start timer to handle animation */
870        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
871                                                      osd_source_animate, osd);
872    }
873    
874    /* check if the user clicked inside the source selection area */
875    static osd_button_t
876    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
877        osd_priv_t *priv = (osd_priv_t*)osd->priv;
878    
879        if(!priv->source_sel.expanded)
880            x -= osd->widget->allocation.width - OSD_S_W;
881        else
882            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
883    
884        if(OSD_S_Y > 0)
885            y -= OSD_S_Y;
886        else
887            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
888    
889        /* within square around puller? */
890        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
891            /* really within puller shape? */
892            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
893                /* expand source selector */
894                if(down)
895                    osd_source_toggle(osd);
896    
897                /* tell upper layers that user clicked some background element */
898                /* of the OSD */
899                return OSD_BG;
900            }
901        }
902    
903        /* check for clicks into data area */
904        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
905            /* re-adjust from puller top to content top */
906            if(OSD_S_Y < 0)
907                y += OSD_S_EXP_H - OSD_S_PH;
908    
909            if(x > OSD_S_PW &&
910               x < OSD_S_PW + OSD_S_EXP_W &&
911               y > 0 &&
912               y < OSD_S_EXP_H) {
913    
914                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
915                    / OSM_GPS_MAP_SOURCE_LAST;
916    
917                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
918                y /= step;
919                y += 1;
920    
921                if(down) {
922                    gint old = 0;
923                    g_object_get(osd->widget, "map-source", &old, NULL);
924    
925                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
926                       y <= OSM_GPS_MAP_SOURCE_LAST &&
927                       old != y) {
928                        g_object_set(osd->widget, "map-source", y, NULL);
929    
930                        osd_render_source_sel(osd, TRUE);
931                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
932                    }
933                }
934    
935                /* return "clicked in OSD background" to prevent further */
936                /* processing by application */
937                return OSD_BG;
938            }
939        }
940    
941        return OSD_NONE;
942  }  }
943    #endif // OSD_SOURCE_SEL
944    
945    static osd_button_t
946    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
947        osd_button_t but = OSD_NONE;
948    
949    #ifdef OSD_BALLOON
950        if(down) {
951            /* needed to handle balloons that are created at click */
952            osd_priv_t *priv = (osd_priv_t*)osd->priv;
953            priv->balloon.just_created = FALSE;
954        }
955    #endif
956    
957    #ifdef OSD_SOURCE_SEL
958        /* the source selection area is handles internally */
959        but = osd_source_check(osd, down, x, y);
960    #endif
961    
962        if(but == OSD_NONE) {
963            gint mx = x - OSD_X;
964            gint my = y - OSD_Y;
965    
966            if(OSD_X < 0)
967                mx -= (osd->widget->allocation.width - OSD_W);
968    
969            if(OSD_Y < 0)
970                my -= (osd->widget->allocation.height - OSD_H);
971    
972            /* first do a rough test for the OSD area. */
973            /* this is just to avoid an unnecessary detailed test */
974            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
975    #ifndef OSD_NO_DPAD
976                but = osd_check_dpad(mx, my);
977    #endif
978            }
979    
980            if(but == OSD_NONE)
981                but = osd_check_zoom(mx, my);
982        }
983    
984    #ifdef OSD_BALLOON
985        if(but == OSD_NONE) {
986            /* check if user clicked into balloon */
987            if(osd_balloon_check(osd, down, x, y))
988                but = OSD_BG;
989        }
990  #endif  #endif
991    
992        return but;
993    }
994    
995    #ifndef OSD_NO_DPAD
996  static void  static void
997  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
998      /* move reference to dpad center */      /* move reference to dpad center */
999      x += D_RAD;      x += D_RAD;
1000      y += D_RAD;      y += D_RAD;
# Line 234  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 1017  osm_gps_map_osd_dpad_labels(cairo_t *cr,
1017          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
1018      }      }
1019  }  }
1020    #endif
1021    
1022  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
1023  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
1024    #define GPS_V0  (D_RAD/7)
1025  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
1026  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
1027    
1028  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
1029    /* this is either drawn in the center of the dpad (if present) */
1030    /* or in the middle of the zoom area */
1031  static void  static void
1032  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1033      /* move reference to dpad center */      /* move reference to dpad center */
1034      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1035      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
1036    
1037      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1038      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
# Line 260  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi Line 1047  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
1047      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
1048      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1049  }  }
1050    #endif
1051    
1052  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
1053    
1054  static void  static void
1055  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1056      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1057      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1058    
# Line 274  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 1062  osm_gps_map_osd_zoom_labels(cairo_t *cr,
1062      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1063  }  }
1064    
1065  #ifndef OSD_COLOR  #ifdef OSD_COORDINATES
1066  /* if no color has been specified we just use the gdks default colors */  
1067    #ifndef OSD_COORDINATES_FONT_SIZE
1068    #define OSD_COORDINATES_FONT_SIZE 12
1069    #endif
1070    
1071    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1072    
1073    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1074    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
1075    
1076    /* these can be overwritten with versions that support */
1077    /* localization */
1078    #ifndef OSD_COORDINATES_CHR_N
1079    #define OSD_COORDINATES_CHR_N  "N"
1080    #endif
1081    #ifndef OSD_COORDINATES_CHR_S
1082    #define OSD_COORDINATES_CHR_S  "S"
1083    #endif
1084    #ifndef OSD_COORDINATES_CHR_E
1085    #define OSD_COORDINATES_CHR_E  "E"
1086    #endif
1087    #ifndef OSD_COORDINATES_CHR_W
1088    #define OSD_COORDINATES_CHR_W  "W"
1089    #endif
1090    
1091    
1092    
1093    /* this is the classic geocaching notation */
1094    static char
1095    *osd_latitude_str(float latitude) {
1096        char *c = OSD_COORDINATES_CHR_N;
1097        float integral, fractional;
1098    
1099        if(isnan(latitude))
1100            return NULL;
1101    
1102        if(latitude < 0) {
1103            latitude = fabs(latitude);
1104            c = OSD_COORDINATES_CHR_S;
1105        }
1106    
1107        fractional = modff(latitude, &integral);
1108    
1109        return g_strdup_printf("%s %02d° %06.3f'",
1110                               c, (int)integral, fractional*60.0);
1111    }
1112    
1113    static char
1114    *osd_longitude_str(float longitude) {
1115        char *c = OSD_COORDINATES_CHR_E;
1116        float integral, fractional;
1117    
1118        if(isnan(longitude))
1119            return NULL;
1120    
1121        if(longitude < 0) {
1122            longitude = fabs(longitude);
1123            c = OSD_COORDINATES_CHR_W;
1124        }
1125    
1126        fractional = modff(longitude, &integral);
1127    
1128        return g_strdup_printf("%s %03d° %06.3f'",
1129                               c, (int)integral, fractional*60.0);
1130    }
1131    
1132  static void  static void
1133  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,  osd_render_coordinates(osm_gps_map_osd_t *osd)
1134                         GdkColor *fg, GdkColor *disabled) {  {
1135      if(enabled)  gdk_cairo_set_source_color(cr, fg);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1136      else         gdk_cairo_set_source_color(cr, disabled);  
1137      cairo_set_line_width (cr, width);      /* get current map position */
1138        gfloat lat, lon;
1139        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1140    
1141        /* check if position has changed enough to require redraw */
1142        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1143            /* 1/60000 == 1/1000 minute */
1144            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1145               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1146                return;
1147    
1148        priv->coordinates.lat = lat;
1149        priv->coordinates.lon = lon;
1150    
1151        /* first fill with transparency */
1152        cairo_t *cr = cairo_create(priv->coordinates.surface);
1153        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1154        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1155        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1156        cairo_paint(cr);
1157        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1158    
1159        cairo_select_font_face (cr, "Sans",
1160                                CAIRO_FONT_SLANT_NORMAL,
1161                                CAIRO_FONT_WEIGHT_BOLD);
1162        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1163    
1164        char *latitude = osd_latitude_str(lat);
1165        char *longitude = osd_longitude_str(lon);
1166    
1167        cairo_text_extents_t lat_extents, lon_extents;
1168        cairo_text_extents (cr, latitude, &lat_extents);
1169        cairo_text_extents (cr, longitude, &lon_extents);
1170    
1171        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1172        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1173        cairo_move_to (cr,
1174                       (OSD_COORDINATES_W - lat_extents.width)/2,
1175                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1176        cairo_text_path (cr, latitude);
1177        cairo_move_to (cr,
1178                       (OSD_COORDINATES_W - lon_extents.width)/2,
1179                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1180                       OSD_COORDINATES_FONT_SIZE);
1181        cairo_text_path (cr, longitude);
1182      cairo_stroke (cr);      cairo_stroke (cr);
1183    
1184        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1185        cairo_move_to (cr,
1186                       (OSD_COORDINATES_W - lat_extents.width)/2,
1187                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1188        cairo_show_text (cr, latitude);
1189        cairo_move_to (cr,
1190                       (OSD_COORDINATES_W - lon_extents.width)/2,
1191                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1192                       OSD_COORDINATES_FONT_SIZE);
1193        cairo_show_text (cr, longitude);
1194    
1195        g_free(latitude);
1196        g_free(longitude);
1197    
1198        cairo_destroy(cr);
1199  }  }
1200  #else  #endif  // OSD_COORDINATES
1201    
1202    #ifdef OSD_NAV
1203    #define OSD_NAV_W  (100)
1204    #define OSD_NAV_H  (100)
1205    
1206  static void  static void
1207  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_nav(osm_gps_map_osd_t *osd)
1208      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  {
1209      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1210      cairo_set_line_width (cr, width);  
1211      cairo_stroke (cr);      /* first fill with transparency */
1212        cairo_t *cr = cairo_create(priv->nav.surface);
1213        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1214        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1215        cairo_paint(cr);
1216        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1217    
1218        cairo_destroy(cr);
1219  }  }
1220    
1221    #endif // OSD_NAV
1222    
1223    
1224    #ifdef OSD_CROSSHAIR
1225    
1226    #ifndef OSD_CROSSHAIR_RADIUS
1227    #define OSD_CROSSHAIR_RADIUS 10
1228  #endif  #endif
1229    
1230  #ifdef OSD_SHADOW_ENABLE  #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1231  static void  #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1232  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1233      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1234      cairo_set_line_width (cr, width);  
1235    static void
1236    osd_render_crosshair_shape(cairo_t *cr) {
1237        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1238                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1239    
1240        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1241                       OSD_CROSSHAIR_H/2);
1242        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1243        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1244                       OSD_CROSSHAIR_H/2);
1245        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1246    
1247        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1248                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1249        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1250        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1251                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1252        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1253    
1254      cairo_stroke (cr);      cairo_stroke (cr);
1255  }  }
1256    
1257    static void
1258    osd_render_crosshair(osm_gps_map_osd_t *osd)
1259    {
1260        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1261    
1262        if(priv->crosshair.rendered)
1263            return;
1264    
1265        priv->crosshair.rendered = TRUE;
1266    
1267        /* first fill with transparency */
1268        cairo_t *cr = cairo_create(priv->crosshair.surface);
1269        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1270        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1271        cairo_paint(cr);
1272        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1273    
1274        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1275    
1276        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1277        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1278        osd_render_crosshair_shape(cr);
1279    
1280        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1281        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1282        osd_render_crosshair_shape(cr);
1283    
1284        cairo_destroy(cr);
1285    }
1286    #endif
1287    
1288    #ifdef OSD_SCALE
1289    
1290    #ifndef OSD_SCALE_FONT_SIZE
1291    #define OSD_SCALE_FONT_SIZE 12
1292  #endif  #endif
1293    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1294    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1295    
1296    /* various parameters used to create the scale */
1297    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1298    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1299    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1300    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1301    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1302    
1303  static void  static void
1304  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_scale(osm_gps_map_osd_t *osd)
1305    {
1306      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1307    
1308        /* this only needs to be rendered if the zoom has changed */
1309        gint zoom;
1310        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1311        if(zoom == priv->scale.zoom)
1312            return;
1313    
1314        priv->scale.zoom = zoom;
1315    
1316        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1317    
1318      /* first fill with transparency */      /* first fill with transparency */
1319      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->scale.surface);
1320      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1321      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);
1322        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1323      cairo_paint(cr);      cairo_paint(cr);
1324        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1325    
1326        /* determine the size of the scale width in meters */
1327        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1328    
1329        /* scale this to useful values */
1330        int exp = logf(width)*M_LOG10E;
1331        int mant = width/pow(10,exp);
1332        int width_metric = mant * pow(10,exp);
1333        char *dist_str = NULL;
1334        if(width_metric<1000)
1335            dist_str = g_strdup_printf("%u m", width_metric);
1336        else
1337            dist_str = g_strdup_printf("%u km", width_metric/1000);
1338        width_metric /= m_per_pix;
1339    
1340        /* and now the hard part: scale for useful imperial values :-( */
1341        /* try to convert to feet, 1ft == 0.3048 m */
1342        width /= 0.3048;
1343        float imp_scale = 0.3048;
1344        char *dist_imp_unit = "ft";
1345    
1346        if(width >= 100) {
1347            /* 1yd == 3 feet */
1348            width /= 3.0;
1349            imp_scale *= 3.0;
1350            dist_imp_unit = "yd";
1351    
1352            if(width >= 1760.0) {
1353                /* 1mi == 1760 yd */
1354                width /= 1760.0;
1355                imp_scale *= 1760.0;
1356                dist_imp_unit = "mi";
1357            }
1358        }
1359    
1360        /* also convert this to full tens/hundreds */
1361        exp = logf(width)*M_LOG10E;
1362        mant = width/pow(10,exp);
1363        int width_imp = mant * pow(10,exp);
1364        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1365    
1366        /* convert back to pixels */
1367        width_imp *= imp_scale;
1368        width_imp /= m_per_pix;
1369    
1370        cairo_select_font_face (cr, "Sans",
1371                                CAIRO_FONT_SLANT_NORMAL,
1372                                CAIRO_FONT_WEIGHT_BOLD);
1373        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1374        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1375    
1376        cairo_text_extents_t extents;
1377        cairo_text_extents (cr, dist_str, &extents);
1378    
1379        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1380        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1381        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1382        cairo_text_path (cr, dist_str);
1383        cairo_stroke (cr);
1384        cairo_move_to (cr, 2*OSD_SCALE_FD,
1385                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1386        cairo_text_path (cr, dist_str_imp);
1387        cairo_stroke (cr);
1388    
1389        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1390        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1391        cairo_show_text (cr, dist_str);
1392        cairo_move_to (cr, 2*OSD_SCALE_FD,
1393                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1394        cairo_show_text (cr, dist_str_imp);
1395    
1396        g_free(dist_str);
1397        g_free(dist_str_imp);
1398    
1399        /* draw white line */
1400        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1401        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1402        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1403        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1404        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1405        cairo_rel_line_to (cr, width_metric, 0);
1406        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1407        cairo_stroke(cr);
1408        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1409        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1410        cairo_rel_line_to (cr, width_imp, 0);
1411        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1412        cairo_stroke(cr);
1413    
1414        /* draw black line */
1415        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1416        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1417        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1418        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1419        cairo_rel_line_to (cr, width_metric, 0);
1420        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1421        cairo_stroke(cr);
1422        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1423        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1424        cairo_rel_line_to (cr, width_imp, 0);
1425        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1426        cairo_stroke(cr);
1427    
1428        cairo_destroy(cr);
1429    }
1430    #endif
1431    
1432    static void
1433    osd_render_controls(osm_gps_map_osd_t *osd)
1434    {
1435        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1436    
1437        if(priv->controls.rendered
1438    #ifdef OSD_GPS_BUTTON
1439           && (priv->controls.gps_enabled == (osd->cb != NULL))
1440    #endif
1441           )
1442            return;
1443    
1444    #ifdef OSD_GPS_BUTTON
1445        priv->controls.gps_enabled = (osd->cb != NULL);
1446    #endif
1447        priv->controls.rendered = TRUE;
1448    
1449    #ifndef OSD_COLOR
1450        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1451        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1452        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1453    #endif
1454    
1455        /* first fill with transparency */
1456        cairo_t *cr = cairo_create(priv->controls.surface);
1457        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1458        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1459        cairo_paint(cr);
1460      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1461    
1462      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1463  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1464      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1465      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1466      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);  #ifndef OSD_NO_DPAD
1467      osm_gps_map_osd_shape_shadow(cr);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1468        osd_shape_shadow(cr);
1469    #endif
1470  #endif  #endif
1471    
1472      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1473    
1474      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1475  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1476      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1477  #else  #else
1478      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1479  #endif  #endif
1480      osm_gps_map_osd_dpad_shape(cr, x, y);  #ifndef OSD_NO_DPAD
1481        osd_dpad_shape(cr, 1, 1);
1482  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1483      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1484  #else  #else
1485      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1486    #endif
1487  #endif  #endif
1488    
1489      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1490    
1491  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1492      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1493      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);
1494      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #ifndef OSD_NO_DPAD
1495      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);
1496      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  #endif
1497        cairo_stroke(cr);
1498    #ifdef OSD_GPS_BUTTON
1499        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1500        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1501        cairo_stroke(cr);
1502    #endif
1503  #endif  #endif
1504    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
1505  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1506      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1507  #else  #else
1508      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1509  #endif  #endif
1510      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_zoom_labels(cr, 1, 1);
1511    #ifndef OSD_NO_DPAD
1512        osd_dpad_labels(cr, 1, 1);
1513    #endif
1514        cairo_stroke(cr);
1515    
1516  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1517      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);
1518  #else  #else
1519      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1520  #endif  #endif
1521    #ifdef OSD_GPS_BUTTON
1522        osd_dpad_gps(cr, 1, 1);
1523    #endif
1524        cairo_stroke(cr);
1525    
1526      cairo_destroy(cr);      cairo_destroy(cr);
1527  }  }
1528    
1529  static void  static void
1530  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)  osd_render(osm_gps_map_osd_t *osd)
1531    {
1532        /* this function is actually called pretty often since the */
1533        /* OSD contents may have changed (due to a coordinate/zoom change). */
1534        /* The different OSD parts have to make sure that they don't */
1535        /* render unneccessarily often and thus waste CPU power */
1536    
1537        osd_render_controls(osd);
1538    
1539    #ifdef OSD_SOURCE_SEL
1540        osd_render_source_sel(osd, FALSE);
1541    #endif
1542    
1543    #ifdef OSD_SCALE
1544        osd_render_scale(osd);
1545    #endif
1546    
1547    #ifdef OSD_CROSSHAIR
1548        osd_render_crosshair(osd);
1549    #endif
1550    
1551    #ifdef OSD_NAV
1552        osd_render_nav(osd);
1553    #endif
1554    
1555    #ifdef OSD_COORDINATES
1556        osd_render_coordinates(osd);
1557    #endif
1558    }
1559    
1560    static void
1561    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1562  {  {
1563      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1564    
1565      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1566      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1567      if(!priv->overlay) {      if(!priv->controls.surface) {
1568          /* create overlay ... */          /* create overlay ... */
1569          priv->overlay =          priv->controls.surface =
1570              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1571    
1572            priv->controls.rendered = FALSE;
1573    #ifdef OSD_GPS_BUTTON
1574            priv->controls.gps_enabled = FALSE;
1575    #endif
1576    
1577    #ifdef OSD_SOURCE_SEL
1578            /* the initial OSD state is alway not-expanded */
1579            priv->source_sel.surface =
1580                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1581                                               OSD_S_W+2, OSD_S_H+2);
1582            priv->source_sel.rendered = FALSE;
1583    #endif
1584    
1585    #ifdef OSD_SCALE
1586            priv->scale.surface =
1587                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1588                                           OSD_SCALE_W, OSD_SCALE_H);
1589            priv->scale.zoom = -1;
1590    #endif
1591    
1592    #ifdef OSD_CROSSHAIR
1593            priv->crosshair.surface =
1594                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1595                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1596            priv->crosshair.rendered = FALSE;
1597    #endif
1598    
1599    #ifdef OSD_NAV
1600            priv->nav.surface =
1601                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1602                                           OSD_NAV_W, OSD_NAV_H);
1603    #endif
1604    
1605    #ifdef OSD_COORDINATES
1606            priv->coordinates.surface =
1607                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1608                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1609    
1610            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1611    #endif
1612    
1613          /* ... and render it */          /* ... and render it */
1614          osm_gps_map_osd_render(osd);          osd_render(osd);
1615      }      }
1616    
1617      // now draw this onto the original context      // now draw this onto the original context
1618      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1619      cairo_set_source_surface(cr, priv->overlay, OSD_X, OSD_Y);  
1620        gint x, y;
1621    
1622    #ifdef OSD_SCALE
1623        x =  OSD_X;
1624        y = -OSD_Y;
1625        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1626        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1627    
1628        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1629        cairo_paint(cr);
1630    #endif
1631    
1632    #ifdef OSD_CROSSHAIR
1633        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1634        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1635    
1636        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1637        cairo_paint(cr);
1638    #endif
1639    
1640    #ifdef OSD_NAV
1641        x =  OSD_X;
1642        if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1643        y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1644    
1645        cairo_set_source_surface(cr, priv->nav.surface, x, y);
1646        cairo_paint(cr);
1647    #endif
1648    
1649    #ifdef OSD_COORDINATES
1650        x = -OSD_X;
1651        y = -OSD_Y;
1652        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1653        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1654    
1655        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1656        cairo_paint(cr);
1657    #endif
1658    
1659    #ifdef OSD_BALLOON
1660        if(priv->balloon.surface) {
1661    
1662            /* convert given lat lon into screen coordinates */
1663            gint x, y;
1664            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1665                                          priv->balloon.lat, priv->balloon.lon,
1666                                          &x, &y);
1667    
1668            /* check if balloon needs to be rerendered */
1669            osd_render_balloon(osd);
1670    
1671            cairo_set_source_surface(cr, priv->balloon.surface,
1672                                     x + priv->balloon.offset_x,
1673                                     y + priv->balloon.offset_y);
1674            cairo_paint(cr);
1675        }
1676    #endif
1677    
1678        x = OSD_X;
1679        if(x < 0)
1680            x += osd->widget->allocation.width - OSD_W;
1681    
1682        y = OSD_Y;
1683        if(y < 0)
1684            y += osd->widget->allocation.height - OSD_H;
1685    
1686        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1687        cairo_paint(cr);
1688    
1689    #ifdef OSD_SOURCE_SEL
1690        if(!priv->source_sel.handler_id) {
1691            /* the OSD source selection is not being animated */
1692            if(!priv->source_sel.expanded)
1693                x = osd->widget->allocation.width - OSD_S_W;
1694            else
1695                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1696        } else
1697            x = priv->source_sel.shift;
1698    
1699        y = OSD_S_Y;
1700        if(OSD_S_Y < 0) {
1701            if(!priv->source_sel.expanded)
1702                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1703            else
1704                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1705        }
1706    
1707        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1708      cairo_paint(cr);      cairo_paint(cr);
1709    #endif
1710    
1711      cairo_destroy(cr);      cairo_destroy(cr);
1712  }  }
1713    
1714  static void  static void
1715  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1716  {  {
1717      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1718    
1719      if (priv->overlay)      if (priv->controls.surface)
1720           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
1721    
1722    #ifdef OSD_SOURCE_SEL
1723        if(priv->source_sel.handler_id)
1724            gtk_timeout_remove(priv->source_sel.handler_id);
1725    
1726        if (priv->source_sel.surface)
1727             cairo_surface_destroy(priv->source_sel.surface);
1728    #endif
1729    
1730    #ifdef OSD_SCALE
1731        if (priv->scale.surface)
1732             cairo_surface_destroy(priv->scale.surface);
1733    #endif
1734    
1735    #ifdef OSD_CROSSHAIR
1736        if (priv->crosshair.surface)
1737             cairo_surface_destroy(priv->crosshair.surface);
1738    #endif
1739    
1740    #ifdef OSD_NAV
1741        if (priv->nav.surface)
1742             cairo_surface_destroy(priv->nav.surface);
1743    #endif
1744    
1745    #ifdef OSD_COORDINATES
1746        if (priv->coordinates.surface)
1747             cairo_surface_destroy(priv->coordinates.surface);
1748    #endif
1749    
1750    #ifdef OSD_BALLOON
1751        if (priv->balloon.surface)
1752             cairo_surface_destroy(priv->balloon.surface);
1753    #endif
1754    
1755      g_free(priv);      g_free(priv);
1756  }  }
1757    
1758    static gboolean
1759    osd_busy(osm_gps_map_osd_t *osd)
1760    {
1761    #ifdef OSD_SOURCE_SEL
1762        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1763        return (priv->source_sel.handler_id != 0);
1764    #else
1765        return FALSE;
1766    #endif
1767    }
1768    
1769  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1770      .draw       = osm_gps_map_osd_draw,      .widget     = NULL,
1771      .check      = osm_gps_map_osd_check,  
1772      .render     = osm_gps_map_osd_render,      .draw       = osd_draw,
1773      .free       = osm_gps_map_osd_free,      .check      = osd_check,
1774        .render     = osd_render,
1775        .free       = osd_free,
1776        .busy       = osd_busy,
1777    
1778      .cb         = NULL,      .cb         = NULL,
1779      .data       = NULL,      .data       = NULL,
# Line 418  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1787  osm_gps_map_osd_classic_init(OsmGpsMap *
1787  {  {
1788      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);
1789    
1790      osd_classic.priv = priv;  #ifdef OSD_BALLOON
1791        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1792        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1793    #endif
1794    
1795      /* 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];  
1796    
1797      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1798  }  }
1799    
1800    #ifdef OSD_GPS_BUTTON
1801  /* 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 */
1802  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
1803  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1804                                     gpointer data) {
1805      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1806      g_return_if_fail (osd);      g_return_if_fail (osd);
1807    
1808      osd->cb = cb;      osd->cb = cb;
# Line 445  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1814  void osm_gps_map_osd_enable_gps (OsmGpsM
1814    
1815      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1816  }  }
1817    #endif
1818    
1819    osd_button_t
1820    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1821        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1822        g_return_val_if_fail (osd, OSD_NONE);
1823    
1824        return osd_check(osd, TRUE, x, y);
1825    }
Legend:
Removed from v.75  
changed lines
  Added in v.122