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 121 by harbaum, Sun Sep 20 19:26:29 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  #ifndef USE_CAIRO  #ifndef USE_CAIRO
29  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
# Line 31  Line 32 
32  #include <cairo.h>  #include <cairo.h>
33    
34  #include "osm-gps-map.h"  #include "osm-gps-map.h"
35    #include "converter.h"
36  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
37    
38  //the osd controls  //the osd controls
39  typedef struct {  typedef struct {
40      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
41      cairo_surface_t *overlay;      struct {
42            cairo_surface_t *surface;
43            gboolean rendered;
44    #ifdef OSD_GPS_BUTTON
45            gboolean gps_enabled;
46    #endif
47        } controls;
48    
49    #ifdef OSD_BALLOON
50        //a balloon with additional info
51        struct {
52            cairo_surface_t *surface;
53            int orientation, offset_x, offset_y;
54    
55            gboolean just_created;
56            float lat, lon;
57            OsmGpsMapRect_t rect;
58    
59            /* function called to have the user app draw the contents */
60            OsmGpsMapBalloonCallback cb;
61            gpointer data;
62        } balloon;
63    #endif
64    
65    #ifdef OSD_SCALE
66        struct {
67            cairo_surface_t *surface;
68            int zoom;
69        } scale;
70    #endif
71    
72    #ifdef OSD_CROSSHAIR
73        struct {
74            cairo_surface_t *surface;
75            gboolean rendered;
76        } crosshair;
77    #endif
78    
79      GdkColor bg, fg, da;  #ifdef OSD_COORDINATES
80        struct {
81            cairo_surface_t *surface;
82            float lat, lon;
83        } coordinates;
84    #endif
85    
86    #ifdef OSD_SOURCE_SEL
87        struct {
88            /* values to handle the "source" menu */
89            cairo_surface_t *surface;
90            gboolean expanded;
91            gint shift, dir, count;
92            gint handler_id;
93            gint width, height;
94            gboolean rendered;
95        } source_sel;
96    #endif
97    
98  } osd_priv_t;  } osd_priv_t;
99    
100    #ifdef OSD_BALLOON
101    /* most visual effects are hardcoded by now, but may be made */
102    /* available via properties later */
103    #ifndef BALLOON_AREA_WIDTH
104    #define BALLOON_AREA_WIDTH           290
105    #endif
106    #ifndef BALLOON_AREA_HEIGHT
107    #define BALLOON_AREA_HEIGHT           75
108    #endif
109    #ifndef BALLOON_CORNER_RADIUS
110    #define BALLOON_CORNER_RADIUS         10
111    #endif
112    
113    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
114    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
115    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
116    #define BALLOON_TRANSPARENCY         0.8
117    #define POINTER_HEIGHT                20
118    #define POINTER_FOOT_WIDTH            20
119    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
120    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
121    #define BALLOON_SHADOW_TRANSPARENCY  0.2
122    
123    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
124    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
125    
126    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
127    
128    
129    /* draw the bubble shape. this is used twice, once for the shape and once */
130    /* for the shadow */
131    static void
132    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
133           gboolean bottom, int px, int py, int px0, int px1) {
134    
135        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
136        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
137                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
138        if(!bottom) {
139            /* insert top pointer */
140            cairo_line_to (cr, px1, y0);
141            cairo_line_to (cr, px, py);
142            cairo_line_to (cr, px0, y0);
143        }
144    
145        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
146        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
147                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
148        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
149        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
150                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
151        if(bottom) {
152            /* insert bottom pointer */
153            cairo_line_to (cr, px0, y1);
154            cairo_line_to (cr, px, py);
155            cairo_line_to (cr, px1, y1);
156        }
157    
158        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
159        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
160                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
161    
162        cairo_close_path (cr);
163    }
164    
165    static void
166    osd_render_balloon(osm_gps_map_osd_t *osd) {
167        osd_priv_t *priv = (osd_priv_t*)osd->priv;
168    
169        /* get zoom */
170        gint zoom;
171        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
172    
173        /* ------- convert given coordinate into screen position --------- */
174        gint xs, ys;
175        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
176                                          priv->balloon.lat, priv->balloon.lon,
177                                          &xs, &ys);
178    
179        gint x0 = 1, y0 = 1;
180    
181        /* check position of this relative to screen center to determine */
182        /* pointer direction ... */
183        int pointer_x, pointer_x0, pointer_x1;
184        int pointer_y;
185    
186        /* ... and calculate position */
187        int orientation = 0;
188        if(xs > osd->widget->allocation.width/2) {
189            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
190            pointer_x = x0 - priv->balloon.offset_x;
191            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
192            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
193            orientation |= 1;
194        } else {
195            priv->balloon.offset_x = -POINTER_OFFSET;
196            pointer_x = x0 - priv->balloon.offset_x;
197            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
198            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
199        }
200    
201        gboolean bottom = FALSE;
202        if(ys > osd->widget->allocation.height/2) {
203            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
204            pointer_y = y0 - priv->balloon.offset_y;
205            bottom = TRUE;
206            orientation |= 2;
207        } else {
208            priv->balloon.offset_y = 0;
209            pointer_y = y0 - priv->balloon.offset_y;
210            y0 += POINTER_HEIGHT;
211        }
212    
213        /* if required orientation equals current one, then don't render */
214        /* anything */
215        if(orientation == priv->balloon.orientation)
216            return;
217    
218        priv->balloon.orientation = orientation;
219    
220        /* calculate bottom/right of box */
221        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
222    
223        /* save balloon screen coordinates for later use */
224        priv->balloon.rect.x = x0 + BALLOON_BORDER;
225        priv->balloon.rect.y = y0 + BALLOON_BORDER;
226        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
227        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
228    
229        cairo_t *cr = cairo_create(priv->balloon.surface);
230        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
231        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
232        cairo_paint(cr);
233        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
234    
235        /* --------- draw shadow --------------- */
236        osm_gps_map_draw_balloon_shape (cr,
237                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
238                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
239                     bottom, pointer_x, pointer_y,
240                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
241    
242        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
243        cairo_fill_preserve (cr);
244        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
245        cairo_set_line_width (cr, 0);
246        cairo_stroke (cr);
247    
248        /* --------- draw main shape ----------- */
249        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
250                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
251    
252        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
253        cairo_fill_preserve (cr);
254        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
255        cairo_set_line_width (cr, 1);
256        cairo_stroke (cr);
257    
258        if (priv->balloon.cb) {
259            /* clip in case application tries to draw in */
260                /* exceed of the balloon */
261            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
262                             priv->balloon.rect.w, priv->balloon.rect.h);
263            cairo_clip (cr);
264            cairo_new_path (cr);  /* current path is not
265                                     consumed by cairo_clip() */
266    
267            priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
268        }
269    
270        cairo_destroy(cr);
271    }
272    
273    /* return true if balloon is being displayed and if */
274    /* the given coordinate is within this balloon */
275    static gboolean
276    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y)
277    {
278        osd_priv_t *priv = (osd_priv_t*)osd->priv;
279    
280        if(!priv->balloon.surface)
281            return FALSE;
282    
283        gint xs, ys;
284        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
285                                          priv->balloon.lat, priv->balloon.lon,
286                                          &xs, &ys);
287    
288        xs += priv->balloon.rect.x + priv->balloon.offset_x;
289        ys += priv->balloon.rect.y + priv->balloon.offset_y;
290    
291        gboolean is_in =
292            (x > xs) && (x < xs + priv->balloon.rect.w) &&
293            (y > ys) && (y < ys + priv->balloon.rect.h);
294    
295        /* handle the fact that the balloon may have been created by the */
296        /* button down event */
297        if(!is_in && !down && !priv->balloon.just_created) {
298            /* the user actually clicked outside the balloon */
299    
300            /* close the balloon! */
301            osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
302        }
303    
304        return is_in;
305    }
306    
307    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
308        g_return_if_fail (OSM_IS_GPS_MAP (map));
309    
310        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
311        g_return_if_fail (osd);
312    
313        osd_priv_t *priv = (osd_priv_t*)osd->priv;
314        g_return_if_fail (priv);
315    
316        if(priv->balloon.surface) {
317            cairo_surface_destroy(priv->balloon.surface);
318            priv->balloon.surface = NULL;
319            priv->balloon.lat = OSM_GPS_MAP_INVALID;
320            priv->balloon.lon = OSM_GPS_MAP_INVALID;
321        }
322        osm_gps_map_redraw(map);
323    }
324    
325    void
326    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
327                                  OsmGpsMapBalloonCallback cb, gpointer data) {
328        g_return_if_fail (OSM_IS_GPS_MAP (map));
329    
330        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
331        g_return_if_fail (osd);
332    
333        osd_priv_t *priv = (osd_priv_t*)osd->priv;
334        g_return_if_fail (priv);
335    
336        osm_gps_map_osd_clear_balloon (map);
337    
338        /* allocate balloon surface */
339        priv->balloon.surface =
340            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
341                                       BALLOON_W+2, BALLOON_H+2);
342    
343        priv->balloon.lat = latitude;
344        priv->balloon.lon = longitude;
345        priv->balloon.cb = cb;
346        priv->balloon.data = data;
347        priv->balloon.just_created = TRUE;
348    
349        priv->balloon.orientation = -1;
350    
351        osd_render_balloon(osd);
352    
353        osm_gps_map_redraw(map);
354    }
355    
356    #endif // OSD_BALLOON
357    
358  /* position and extent of bounding box */  /* position and extent of bounding box */
359    #ifndef OSD_X
360  #define OSD_X      (10)  #define OSD_X      (10)
361    #endif
362    
363    #ifndef OSD_Y
364  #define OSD_Y      (10)  #define OSD_Y      (10)
365    #endif
366    
367  /* parameters of the direction shape */  /* parameters of the direction shape */
368  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
369  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
370  #else  #else
371  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
372  #endif  #endif
373  #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
374  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 67  typedef struct { Line 385  typedef struct {
385  #define OSD_SHADOW (0)  #define OSD_SHADOW (0)
386  #endif  #endif
387    
388    /* normally the GPS button is in the center of the dpad. if there's */
389    /* no dpad it will go into the zoom area */
390    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
391    #define Z_GPS  1
392    #else
393    #define Z_GPS  0
394    #endif
395    
396  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
397  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
398    #if !Z_GPS
399  #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)
400    #else
401    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
402    #endif
403    
404  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
405  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
406  #endif  #endif
407    
408  #define Z_TOP    (2 * D_RAD + Z_STEP)  #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
409    
410  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
411  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
412  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
413  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
414    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
415    
416  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
417  static void  static void
418  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
419  {  {
420      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
421      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 424  osm_gps_map_osd_zoom_shape(cairo_t *cr,
424      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);
425  }  }
426    
427    /* ------------------- color/shadow functions ----------------- */
428    
429    #ifndef OSD_COLOR
430    /* if no color has been specified we just use the gdks default colors */
431    static void
432    osd_labels(cairo_t *cr, gint width, gboolean enabled,
433                           GdkColor *fg, GdkColor *disabled) {
434        if(enabled)  gdk_cairo_set_source_color(cr, fg);
435        else         gdk_cairo_set_source_color(cr, disabled);
436        cairo_set_line_width (cr, width);
437    }
438    #else
439    static void
440    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
441        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
442        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
443        cairo_set_line_width (cr, width);
444    }
445    #endif
446    
447    #ifdef OSD_SHADOW_ENABLE
448    static void
449    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
450        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
451        cairo_set_line_width (cr, width);
452    }
453    #endif
454    
455    #ifndef OSD_NO_DPAD
456  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
457  static void  static void
458  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
459  {  {
460      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);
461  }  }
462    #endif
463    
464    #ifdef OSD_SHADOW_ENABLE
465    static void
466    osd_shape_shadow(cairo_t *cr) {
467        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
468        cairo_fill (cr);
469        cairo_stroke (cr);
470    }
471    #endif
472    
473    #ifndef OSD_COLOR
474    /* if no color has been specified we just use the gdks default colors */
475    static void
476    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
477        gdk_cairo_set_source_color(cr, bg);
478        cairo_fill_preserve (cr);
479        gdk_cairo_set_source_color(cr, fg);
480        cairo_set_line_width (cr, 1);
481        cairo_stroke (cr);
482    }
483    #else
484    static void
485    osd_shape(cairo_t *cr) {
486        cairo_set_source_rgb (cr, OSD_COLOR_BG);
487        cairo_fill_preserve (cr);
488        cairo_set_source_rgb (cr, OSD_COLOR);
489        cairo_set_line_width (cr, 1);
490        cairo_stroke (cr);
491    }
492    #endif
493    
494    
495  static gboolean  static gboolean
496  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 498  osm_gps_map_in_circle(gint x, gint y, gi
498      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
499  }  }
500    
501    #ifndef OSD_NO_DPAD
502  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
503  static osd_button_t  static osd_button_t
504  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
505  {  {
506      /* within entire dpad circle */      /* within entire dpad circle */
507      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))
508      {      {
509          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
510          x -= (OSD_X + D_RAD);          x -= D_RAD;
511          y -= (OSD_Y + D_RAD);          y -= D_RAD;
512    
513    #ifdef OSD_GPS_BUTTON
514          /* check for dpad center goes here! */          /* check for dpad center goes here! */
515          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))
516              return OSD_GPS;              return OSD_GPS;
517    #endif
518    
519          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
520              return OSD_UP;              return OSD_UP;
# Line 137  osm_gps_map_osd_check_dpad(gint x, gint Line 532  osm_gps_map_osd_check_dpad(gint x, gint
532      }      }
533      return OSD_NONE;      return OSD_NONE;
534  }  }
535    #endif
536    
537  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
538  static osd_button_t  static osd_button_t
539  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
540      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) {
541    
542          /* within circle around (-) label */          /* within circle around (-) label */
543          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)  
544              return OSD_OUT;              return OSD_OUT;
545    
546          /* within circle around (+) label */          /* within circle around (+) label */
547          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))
548              return OSD_IN;              return OSD_IN;
549    
550    #if Z_GPS == 1
551            /* within square around center */
552            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
553                return OSD_GPS;
554    #endif
555    
556            /* between center of (-) button and center of entire zoom control area */
557            if(x > OSD_LEFT && x < D_RAD)
558                return OSD_OUT;
559    
560          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
561          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
562              return OSD_IN;              return OSD_IN;
563      }      }
564    
565      return OSD_NONE;      return OSD_NONE;
566  }  }
567    
568  static osd_button_t  #ifdef OSD_SOURCE_SEL
 osm_gps_map_osd_check(gint x, gint y) {  
     osd_button_t but = OSD_NONE;  
569    
570      /* first do a rough test for the OSD area. */  /* place source selection at right border */
571      /* this is just to avoid an unnecessary detailed test */  #define OSD_S_RAD (Z_RAD)
572      if(x > OSD_X && x < OSD_X + OSD_W &&  #define OSD_S_X   (-OSD_X)
573         y > OSD_Y && y < OSD_Y + OSD_H) {  #define OSD_S_Y   (OSD_Y)
574          but = osm_gps_map_osd_check_dpad(x, y);  #define OSD_S_PW  (2 * Z_RAD)
575    #define OSD_S_W   (OSD_S_PW)
576    #define OSD_S_PH  (2 * Z_RAD)
577    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
578    
579    /* size of usable area when expanded */
580    #define OSD_S_AREA_W (priv->source_sel.width)
581    #define OSD_S_AREA_H (priv->source_sel.height)
582    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
583    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
584    
585    /* internal value to draw the arrow on the "puller" */
586    #define OSD_S_D0  (OSD_S_RAD/2)
587    #ifndef OSD_FONT_SIZE
588    #define OSD_FONT_SIZE 16.0
589    #endif
590    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
591    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
592    
593          if(but == OSD_NONE)  /* draw the shape of the source selection OSD, either only the puller (not expanded) */
594              but = osm_gps_map_osd_check_zoom(x, y);  /* or the entire menu incl. the puller (expanded) */
595    static void
596    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
597        if(!priv->source_sel.expanded) {
598            /* just draw the puller */
599            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
600            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
601            cairo_line_to (cr, x + OSD_S_PW, y);
602        } else {
603            /* draw the puller and the area itself */
604            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
605            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
606            if(OSD_S_Y > 0) {
607                cairo_line_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            } else {
610                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
611                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
612                cairo_line_to (cr, x + OSD_S_PW, y);
613            }
614            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
615            cairo_close_path (cr);
616      }      }
617    }
618    
619      return but;  static void
620    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
621        osd_priv_t *priv = (osd_priv_t*)osd->priv;
622    
623        int py = offset + OSD_S_RAD - OSD_S_D0;
624    
625        if(!priv->source_sel.expanded) {
626            /* draw the "puller" open (<) arrow */
627            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
628            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
629            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
630        } else {
631            if(OSD_S_Y < 0)
632                py += OSD_S_AREA_H - OSD_S_PH;
633    
634            /* draw the "puller" close (>) 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            cairo_stroke(cr);
639    
640            /* don't draw a shadow for the text content */
641            if(offset == 1) {
642                gint source;
643                g_object_get(osd->widget, "map-source", &source, NULL);
644    
645                cairo_select_font_face (cr, "Sans",
646                                        CAIRO_FONT_SLANT_NORMAL,
647                                        CAIRO_FONT_WEIGHT_BOLD);
648                cairo_set_font_size (cr, OSD_FONT_SIZE);
649    
650                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
651                    OSM_GPS_MAP_SOURCE_LAST;
652                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
653                    cairo_text_extents_t extents;
654                    const char *src = osm_gps_map_source_get_friendly_name(i);
655                    cairo_text_extents (cr, src, &extents);
656    
657                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
658                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
659    
660                    /* draw filled rectangle if selected */
661                    if(source == i) {
662                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
663                                        y - OSD_TEXT_SKIP,
664                                        priv->source_sel.width - OSD_TEXT_BORDER,
665                                        step + OSD_TEXT_SKIP);
666                        cairo_fill(cr);
667    
668                        /* temprarily draw with background color */
669    #ifndef OSD_COLOR
670                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
671                        gdk_cairo_set_source_color(cr, &bg);
672    #else
673                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
674    #endif
675                    }
676    
677                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
678                    cairo_show_text (cr, src);
679    
680                    /* restore color */
681                    if(source == i) {
682    #ifndef OSD_COLOR
683                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
684                        gdk_cairo_set_source_color(cr, &fg);
685    #else
686                        cairo_set_source_rgb (cr, OSD_COLOR);
687    #endif
688                    }
689                }
690            }
691        }
692  }  }
693    
694    static void
695    osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
696        osd_priv_t *priv = (osd_priv_t*)osd->priv;
697    
698        if(priv->source_sel.rendered && !force_rerender)
699            return;
700    
701        priv->source_sel.rendered = TRUE;
702    
703    #ifndef OSD_COLOR
704        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
705        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
706        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
707    #endif
708    
709        /* draw source selector */
710        cairo_t *cr = cairo_create(priv->source_sel.surface);
711        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
712        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
713        cairo_paint(cr);
714        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
715    
716  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
717  static void      osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
718  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);  
 }  
719  #endif  #endif
720    
721        osd_source_shape(priv, cr, 1, 1);
722  #ifndef OSD_COLOR  #ifndef OSD_COLOR
723  /* if no color has been specified we just use the gdks default colors */      osd_shape(cr, &bg, &fg);
724  static void  #else
725  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {      osd_shape(cr);
726      gdk_cairo_set_source_color(cr, bg);  #endif
727      cairo_fill_preserve (cr);  
728      gdk_cairo_set_source_color(cr, fg);  #ifdef OSD_SHADOW_ENABLE
729      cairo_set_line_width (cr, 1);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
730        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
731      cairo_stroke (cr);      cairo_stroke (cr);
732  }  #endif
733    #ifndef OSD_COLOR
734        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
735  #else  #else
736  static void      osd_labels(cr, Z_RAD/3, TRUE);
737  osm_gps_map_osd_shape(cairo_t *cr) {  #endif
738      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);  
739      cairo_stroke (cr);      cairo_stroke (cr);
740    
741        cairo_destroy(cr);
742    }
743    
744    /* re-allocate the buffer used to draw the menu. This is used */
745    /* to collapse/expand the buffer */
746    static void
747    osd_source_reallocate(osm_gps_map_osd_t *osd) {
748        osd_priv_t *priv = (osd_priv_t*)osd->priv;
749    
750        /* re-allocate offscreen bitmap */
751        g_assert (priv->source_sel.surface);
752    
753        int w = OSD_S_W, h = OSD_S_H;
754        if(priv->source_sel.expanded) {
755            cairo_text_extents_t extents;
756    
757            /* determine content size */
758            cairo_t *cr = cairo_create(priv->source_sel.surface);
759            cairo_select_font_face (cr, "Sans",
760                                    CAIRO_FONT_SLANT_NORMAL,
761                                    CAIRO_FONT_WEIGHT_BOLD);
762            cairo_set_font_size (cr, OSD_FONT_SIZE);
763    
764            /* calculate menu size */
765            int i, max_h = 0, max_w = 0;
766            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
767                const char *src = osm_gps_map_source_get_friendly_name(i);
768                cairo_text_extents (cr, src, &extents);
769    
770                if(extents.width > max_w) max_w = extents.width;
771                if(extents.height > max_h) max_h = extents.height;
772            }
773            cairo_destroy(cr);
774    
775            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
776            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
777                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
778    
779            w = OSD_S_EXP_W;
780            h = OSD_S_EXP_H;
781        }
782    
783        cairo_surface_destroy(priv->source_sel.surface);
784        priv->source_sel.surface =
785            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
786    
787        osd_render_source_sel(osd, TRUE);
788    }
789    
790    #define OSD_HZ      15
791    #define OSD_TIME    500
792    
793    static gboolean osd_source_animate(gpointer data) {
794        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
795        osd_priv_t *priv = (osd_priv_t*)osd->priv;
796        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
797        gboolean done = FALSE;
798        priv->source_sel.count += priv->source_sel.dir;
799    
800        /* shifting in */
801        if(priv->source_sel.dir < 0) {
802            if(priv->source_sel.count <= 0) {
803                priv->source_sel.count = 0;
804                done = TRUE;
805            }
806        } else {
807            if(priv->source_sel.count >= 1000) {
808                priv->source_sel.expanded = FALSE;
809                osd_source_reallocate(osd);
810    
811                priv->source_sel.count = 1000;
812                done = TRUE;
813            }
814        }
815    
816    
817        /* count runs linearly from 0 to 1000, map this nicely onto a position */
818    
819        /* nice sinoid mapping */
820        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
821        priv->source_sel.shift =
822            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
823            m * diff;
824    
825        /* make sure the screen is updated */
826        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
827    
828        /* stop animation if done */
829        if(done)
830            priv->source_sel.handler_id = 0;
831    
832        return !done;
833  }  }
834    
835    /* switch between expand and collapse mode of source selection */
836    static void
837    osd_source_toggle(osm_gps_map_osd_t *osd)
838    {
839        osd_priv_t *priv = (osd_priv_t*)osd->priv;
840    
841        /* ignore clicks while animation is running */
842        if(priv->source_sel.handler_id)
843            return;
844    
845        /* expand immediately, collapse is handle at the end of the */
846        /* collapse animation */
847        if(!priv->source_sel.expanded) {
848            priv->source_sel.expanded = TRUE;
849            osd_source_reallocate(osd);
850    
851            priv->source_sel.count = 1000;
852            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
853            priv->source_sel.dir = -1000/OSD_HZ;
854        } else {
855            priv->source_sel.count =  0;
856            priv->source_sel.shift = osd->widget->allocation.width -
857                OSD_S_EXP_W + OSD_S_X;
858            priv->source_sel.dir = +1000/OSD_HZ;
859        }
860    
861        /* start timer to handle animation */
862        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
863                                                      osd_source_animate, osd);
864    }
865    
866    /* check if the user clicked inside the source selection area */
867    static osd_button_t
868    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
869        osd_priv_t *priv = (osd_priv_t*)osd->priv;
870    
871        if(!priv->source_sel.expanded)
872            x -= osd->widget->allocation.width - OSD_S_W;
873        else
874            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
875    
876        if(OSD_S_Y > 0)
877            y -= OSD_S_Y;
878        else
879            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
880    
881        /* within square around puller? */
882        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
883            /* really within puller shape? */
884            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
885                /* expand source selector */
886                if(down)
887                    osd_source_toggle(osd);
888    
889                /* tell upper layers that user clicked some background element */
890                /* of the OSD */
891                return OSD_BG;
892            }
893        }
894    
895        /* check for clicks into data area */
896        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
897            /* re-adjust from puller top to content top */
898            if(OSD_S_Y < 0)
899                y += OSD_S_EXP_H - OSD_S_PH;
900    
901            if(x > OSD_S_PW &&
902               x < OSD_S_PW + OSD_S_EXP_W &&
903               y > 0 &&
904               y < OSD_S_EXP_H) {
905    
906                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
907                    / OSM_GPS_MAP_SOURCE_LAST;
908    
909                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
910                y /= step;
911                y += 1;
912    
913                if(down) {
914                    gint old = 0;
915                    g_object_get(osd->widget, "map-source", &old, NULL);
916    
917                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
918                       y <= OSM_GPS_MAP_SOURCE_LAST &&
919                       old != y) {
920                        g_object_set(osd->widget, "map-source", y, NULL);
921    
922                        osd_render_source_sel(osd, TRUE);
923                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
924                    }
925                }
926    
927                /* return "clicked in OSD background" to prevent further */
928                /* processing by application */
929                return OSD_BG;
930            }
931        }
932    
933        return OSD_NONE;
934    }
935    #endif // OSD_SOURCE_SEL
936    
937    static osd_button_t
938    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
939        osd_button_t but = OSD_NONE;
940    
941    #ifdef OSD_BALLOON
942        if(down) {
943            /* needed to handle balloons that are created at click */
944            osd_priv_t *priv = (osd_priv_t*)osd->priv;
945            priv->balloon.just_created = FALSE;
946        }
947    #endif
948    
949    #ifdef OSD_SOURCE_SEL
950        /* the source selection area is handles internally */
951        but = osd_source_check(osd, down, x, y);
952    #endif
953    
954        if(but == OSD_NONE) {
955            gint mx = x - OSD_X;
956            gint my = y - OSD_Y;
957    
958            if(OSD_X < 0)
959                mx -= (osd->widget->allocation.width - OSD_W);
960    
961            if(OSD_Y < 0)
962                my -= (osd->widget->allocation.height - OSD_H);
963    
964            /* first do a rough test for the OSD area. */
965            /* this is just to avoid an unnecessary detailed test */
966            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
967    #ifndef OSD_NO_DPAD
968                but = osd_check_dpad(mx, my);
969  #endif  #endif
970            }
971    
972            if(but == OSD_NONE)
973                but = osd_check_zoom(mx, my);
974        }
975    
976    #ifdef OSD_BALLOON
977        if(but == OSD_NONE) {
978            /* check if user clicked into balloon */
979            if(osd_balloon_check(osd, down, x, y))
980                but = OSD_BG;
981        }
982    #endif
983    
984        return but;
985    }
986    
987    #ifndef OSD_NO_DPAD
988  static void  static void
989  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
990      /* move reference to dpad center */      /* move reference to dpad center */
991      x += D_RAD;      x += D_RAD;
992      y += D_RAD;      y += D_RAD;
# Line 234  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 1009  osm_gps_map_osd_dpad_labels(cairo_t *cr,
1009          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]);
1010      }      }
1011  }  }
1012    #endif
1013    
1014  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
1015  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
1016    #define GPS_V0  (D_RAD/7)
1017  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
1018  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
1019    
1020  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
1021    /* this is either drawn in the center of the dpad (if present) */
1022    /* or in the middle of the zoom area */
1023  static void  static void
1024  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1025      /* move reference to dpad center */      /* move reference to dpad center */
1026      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1027      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
1028    
1029      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
1030      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 1039  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
1039      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
1040      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
1041  }  }
1042    #endif
1043    
1044  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
1045    
1046  static void  static void
1047  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1048      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1049      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1050    
# Line 274  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 1054  osm_gps_map_osd_zoom_labels(cairo_t *cr,
1054      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1055  }  }
1056    
1057  #ifndef OSD_COLOR  #ifdef OSD_COORDINATES
1058  /* if no color has been specified we just use the gdks default colors */  
1059    #ifndef OSD_COORDINATES_FONT_SIZE
1060    #define OSD_COORDINATES_FONT_SIZE 12
1061    #endif
1062    
1063    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1064    
1065    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1066    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
1067    
1068    /* these can be overwritten with versions that support */
1069    /* localization */
1070    #ifndef OSD_COORDINATES_CHR_N
1071    #define OSD_COORDINATES_CHR_N  "N"
1072    #endif
1073    #ifndef OSD_COORDINATES_CHR_S
1074    #define OSD_COORDINATES_CHR_S  "S"
1075    #endif
1076    #ifndef OSD_COORDINATES_CHR_E
1077    #define OSD_COORDINATES_CHR_E  "E"
1078    #endif
1079    #ifndef OSD_COORDINATES_CHR_W
1080    #define OSD_COORDINATES_CHR_W  "W"
1081    #endif
1082    
1083    
1084    
1085    /* this is the classic geocaching notation */
1086    static char
1087    *osd_latitude_str(float latitude) {
1088        char *c = OSD_COORDINATES_CHR_N;
1089        float integral, fractional;
1090    
1091        if(isnan(latitude))
1092            return NULL;
1093    
1094        if(latitude < 0) {
1095            latitude = fabs(latitude);
1096            c = OSD_COORDINATES_CHR_S;
1097        }
1098    
1099        fractional = modff(latitude, &integral);
1100    
1101        return g_strdup_printf("%s %02d° %06.3f'",
1102                               c, (int)integral, fractional*60.0);
1103    }
1104    
1105    static char
1106    *osd_longitude_str(float longitude) {
1107        char *c = OSD_COORDINATES_CHR_E;
1108        float integral, fractional;
1109    
1110        if(isnan(longitude))
1111            return NULL;
1112    
1113        if(longitude < 0) {
1114            longitude = fabs(longitude);
1115            c = OSD_COORDINATES_CHR_W;
1116        }
1117    
1118        fractional = modff(longitude, &integral);
1119    
1120        return g_strdup_printf("%s %03d° %06.3f'",
1121                               c, (int)integral, fractional*60.0);
1122    }
1123    
1124  static void  static void
1125  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,  osd_render_coordinates(osm_gps_map_osd_t *osd)
1126                         GdkColor *fg, GdkColor *disabled) {  {
1127      if(enabled)  gdk_cairo_set_source_color(cr, fg);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1128      else         gdk_cairo_set_source_color(cr, disabled);  
1129      cairo_set_line_width (cr, width);      /* get current map position */
1130        gfloat lat, lon;
1131        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1132    
1133        /* check if position has changed enough to require redraw */
1134        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1135            /* 1/60000 == 1/1000 minute */
1136            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1137               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1138                return;
1139    
1140        priv->coordinates.lat = lat;
1141        priv->coordinates.lon = lon;
1142    
1143        /* first fill with transparency */
1144        cairo_t *cr = cairo_create(priv->coordinates.surface);
1145        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1146        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1147        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1148        cairo_paint(cr);
1149        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1150    
1151        cairo_select_font_face (cr, "Sans",
1152                                CAIRO_FONT_SLANT_NORMAL,
1153                                CAIRO_FONT_WEIGHT_BOLD);
1154        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1155    
1156        char *latitude = osd_latitude_str(lat);
1157        char *longitude = osd_longitude_str(lon);
1158    
1159        cairo_text_extents_t lat_extents, lon_extents;
1160        cairo_text_extents (cr, latitude, &lat_extents);
1161        cairo_text_extents (cr, longitude, &lon_extents);
1162    
1163        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1164        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1165        cairo_move_to (cr,
1166                       (OSD_COORDINATES_W - lat_extents.width)/2,
1167                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1168        cairo_text_path (cr, latitude);
1169        cairo_move_to (cr,
1170                       (OSD_COORDINATES_W - lon_extents.width)/2,
1171                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1172                       OSD_COORDINATES_FONT_SIZE);
1173        cairo_text_path (cr, longitude);
1174      cairo_stroke (cr);      cairo_stroke (cr);
1175    
1176        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1177        cairo_move_to (cr,
1178                       (OSD_COORDINATES_W - lat_extents.width)/2,
1179                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1180        cairo_show_text (cr, latitude);
1181        cairo_move_to (cr,
1182                       (OSD_COORDINATES_W - lon_extents.width)/2,
1183                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1184                       OSD_COORDINATES_FONT_SIZE);
1185        cairo_show_text (cr, longitude);
1186    
1187        g_free(latitude);
1188        g_free(longitude);
1189    
1190        cairo_destroy(cr);
1191  }  }
1192  #else  #endif  // OSD_COORDINATES
1193    
1194    #ifdef OSD_CROSSHAIR
1195    
1196    #ifndef OSD_CROSSHAIR_RADIUS
1197    #define OSD_CROSSHAIR_RADIUS 10
1198    #endif
1199    
1200    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1201    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1202    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1203    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1204    
1205  static void  static void
1206  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_crosshair_shape(cairo_t *cr) {
1207      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1208      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1209      cairo_set_line_width (cr, width);  
1210        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1211                       OSD_CROSSHAIR_H/2);
1212        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1213        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1214                       OSD_CROSSHAIR_H/2);
1215        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1216    
1217        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1218                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1219        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1220        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1221                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1222        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1223    
1224      cairo_stroke (cr);      cairo_stroke (cr);
1225  }  }
1226    
1227    static void
1228    osd_render_crosshair(osm_gps_map_osd_t *osd)
1229    {
1230        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1231    
1232        if(priv->crosshair.rendered)
1233            return;
1234    
1235        priv->crosshair.rendered = TRUE;
1236    
1237        /* first fill with transparency */
1238        cairo_t *cr = cairo_create(priv->crosshair.surface);
1239        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1240        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1241        cairo_paint(cr);
1242        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1243    
1244        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1245    
1246        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1247        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1248        osd_render_crosshair_shape(cr);
1249    
1250        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1251        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1252        osd_render_crosshair_shape(cr);
1253    
1254        cairo_destroy(cr);
1255    }
1256  #endif  #endif
1257    
1258  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SCALE
1259  static void  
1260  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  #ifndef OSD_SCALE_FONT_SIZE
1261      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  #define OSD_SCALE_FONT_SIZE 12
1262      cairo_set_line_width (cr, width);  #endif
1263    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1264    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1265    
1266    /* various parameters used to create the scale */
1267    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1268    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1269    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1270    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1271    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1272    
1273    static void
1274    osd_render_scale(osm_gps_map_osd_t *osd)
1275    {
1276        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1277    
1278        /* this only needs to be rendered if the zoom has changed */
1279        gint zoom;
1280        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1281        if(zoom == priv->scale.zoom)
1282            return;
1283    
1284        priv->scale.zoom = zoom;
1285    
1286        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1287    
1288        /* first fill with transparency */
1289        cairo_t *cr = cairo_create(priv->scale.surface);
1290        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1291        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1292        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1293        cairo_paint(cr);
1294        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1295    
1296        /* determine the size of the scale width in meters */
1297        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1298    
1299        /* scale this to useful values */
1300        int exp = logf(width)*M_LOG10E;
1301        int mant = width/pow(10,exp);
1302        int width_metric = mant * pow(10,exp);
1303        char *dist_str = NULL;
1304        if(width_metric<1000)
1305            dist_str = g_strdup_printf("%u m", width_metric);
1306        else
1307            dist_str = g_strdup_printf("%u km", width_metric/1000);
1308        width_metric /= m_per_pix;
1309    
1310        /* and now the hard part: scale for useful imperial values :-( */
1311        /* try to convert to feet, 1ft == 0.3048 m */
1312        width /= 0.3048;
1313        float imp_scale = 0.3048;
1314        char *dist_imp_unit = "ft";
1315    
1316        if(width >= 100) {
1317            /* 1yd == 3 feet */
1318            width /= 3.0;
1319            imp_scale *= 3.0;
1320            dist_imp_unit = "yd";
1321    
1322            if(width >= 1760.0) {
1323                /* 1mi == 1760 yd */
1324                width /= 1760.0;
1325                imp_scale *= 1760.0;
1326                dist_imp_unit = "mi";
1327            }
1328        }
1329    
1330        /* also convert this to full tens/hundreds */
1331        exp = logf(width)*M_LOG10E;
1332        mant = width/pow(10,exp);
1333        int width_imp = mant * pow(10,exp);
1334        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1335    
1336        /* convert back to pixels */
1337        width_imp *= imp_scale;
1338        width_imp /= m_per_pix;
1339    
1340        cairo_select_font_face (cr, "Sans",
1341                                CAIRO_FONT_SLANT_NORMAL,
1342                                CAIRO_FONT_WEIGHT_BOLD);
1343        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1344        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1345    
1346        cairo_text_extents_t extents;
1347        cairo_text_extents (cr, dist_str, &extents);
1348    
1349        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1350        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1351        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1352        cairo_text_path (cr, dist_str);
1353      cairo_stroke (cr);      cairo_stroke (cr);
1354        cairo_move_to (cr, 2*OSD_SCALE_FD,
1355                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1356        cairo_text_path (cr, dist_str_imp);
1357        cairo_stroke (cr);
1358    
1359        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1360        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1361        cairo_show_text (cr, dist_str);
1362        cairo_move_to (cr, 2*OSD_SCALE_FD,
1363                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1364        cairo_show_text (cr, dist_str_imp);
1365    
1366        g_free(dist_str);
1367        g_free(dist_str_imp);
1368    
1369        /* draw white line */
1370        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1371        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1372        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1373        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1374        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1375        cairo_rel_line_to (cr, width_metric, 0);
1376        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1377        cairo_stroke(cr);
1378        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1379        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1380        cairo_rel_line_to (cr, width_imp, 0);
1381        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1382        cairo_stroke(cr);
1383    
1384        /* draw black line */
1385        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1386        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1387        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1388        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1389        cairo_rel_line_to (cr, width_metric, 0);
1390        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1391        cairo_stroke(cr);
1392        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1393        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1394        cairo_rel_line_to (cr, width_imp, 0);
1395        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1396        cairo_stroke(cr);
1397    
1398        cairo_destroy(cr);
1399  }  }
1400  #endif  #endif
1401    
1402  static void  static void
1403  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_controls(osm_gps_map_osd_t *osd)
1404    {
1405      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1406    
1407        if(priv->controls.rendered
1408    #ifdef OSD_GPS_BUTTON
1409           && (priv->controls.gps_enabled == (osd->cb != NULL))
1410    #endif
1411           )
1412            return;
1413    
1414    #ifdef OSD_GPS_BUTTON
1415        priv->controls.gps_enabled = (osd->cb != NULL);
1416    #endif
1417        priv->controls.rendered = TRUE;
1418    
1419    #ifndef OSD_COLOR
1420        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1421        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1422        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1423    #endif
1424    
1425      /* first fill with transparency */      /* first fill with transparency */
1426      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1427      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1428      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);
1429      cairo_paint(cr);      cairo_paint(cr);
   
1430      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1431    
1432      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1433  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1434      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1435      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1436      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);  #ifndef OSD_NO_DPAD
1437      osm_gps_map_osd_shape_shadow(cr);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1438        osd_shape_shadow(cr);
1439    #endif
1440  #endif  #endif
1441    
1442      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1443    
1444      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1445  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1446      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1447  #else  #else
1448      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1449  #endif  #endif
1450      osm_gps_map_osd_dpad_shape(cr, x, y);  #ifndef OSD_NO_DPAD
1451        osd_dpad_shape(cr, 1, 1);
1452  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1453      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1454  #else  #else
1455      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1456    #endif
1457  #endif  #endif
1458    
1459      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1460    
1461  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1462      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1463      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);
1464      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #ifndef OSD_NO_DPAD
1465      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);
1466      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  #endif
1467        cairo_stroke(cr);
1468    #ifdef OSD_GPS_BUTTON
1469        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1470        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1471        cairo_stroke(cr);
1472    #endif
1473  #endif  #endif
1474    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
1475  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1476      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1477  #else  #else
1478      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1479    #endif
1480        osd_zoom_labels(cr, 1, 1);
1481    #ifndef OSD_NO_DPAD
1482        osd_dpad_labels(cr, 1, 1);
1483  #endif  #endif
1484      osm_gps_map_osd_dpad_gps(cr, x, y);      cairo_stroke(cr);
1485    
1486  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1487      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);
1488  #else  #else
1489      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1490    #endif
1491    #ifdef OSD_GPS_BUTTON
1492        osd_dpad_gps(cr, 1, 1);
1493  #endif  #endif
1494        cairo_stroke(cr);
1495    
1496      cairo_destroy(cr);      cairo_destroy(cr);
1497  }  }
1498    
1499  static void  static void
1500  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)  osd_render(osm_gps_map_osd_t *osd)
1501    {
1502        /* this function is actually called pretty often since the */
1503        /* OSD contents may have changed (due to a coordinate/zoom change). */
1504        /* The different OSD parts have to make sure that they don't */
1505        /* render unneccessarily often and thus waste CPU power */
1506    
1507        osd_render_controls(osd);
1508    
1509    #ifdef OSD_SOURCE_SEL
1510        osd_render_source_sel(osd, FALSE);
1511    #endif
1512    
1513    #ifdef OSD_SCALE
1514        osd_render_scale(osd);
1515    #endif
1516    
1517    #ifdef OSD_CROSSHAIR
1518        osd_render_crosshair(osd);
1519    #endif
1520    
1521    #ifdef OSD_COORDINATES
1522        osd_render_coordinates(osd);
1523    #endif
1524    }
1525    
1526    static void
1527    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1528  {  {
1529      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1530    
1531      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1532      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1533      if(!priv->overlay) {      if(!priv->controls.surface) {
1534          /* create overlay ... */          /* create overlay ... */
1535          priv->overlay =          priv->controls.surface =
1536              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1537    
1538            priv->controls.rendered = FALSE;
1539    #ifdef OSD_GPS_BUTTON
1540            priv->controls.gps_enabled = FALSE;
1541    #endif
1542    
1543    #ifdef OSD_SOURCE_SEL
1544            /* the initial OSD state is alway not-expanded */
1545            priv->source_sel.surface =
1546                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1547                                               OSD_S_W+2, OSD_S_H+2);
1548            priv->source_sel.rendered = FALSE;
1549    #endif
1550    
1551    #ifdef OSD_SCALE
1552            priv->scale.surface =
1553                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1554                                           OSD_SCALE_W, OSD_SCALE_H);
1555            priv->scale.zoom = -1;
1556    #endif
1557    
1558    #ifdef OSD_CROSSHAIR
1559            priv->crosshair.surface =
1560                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1561                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1562            priv->crosshair.rendered = FALSE;
1563    #endif
1564    
1565    #ifdef OSD_COORDINATES
1566            priv->coordinates.surface =
1567                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1568                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1569    
1570            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1571    #endif
1572    
1573          /* ... and render it */          /* ... and render it */
1574          osm_gps_map_osd_render(osd);          osd_render(osd);
1575      }      }
1576    
1577      // now draw this onto the original context      // now draw this onto the original context
1578      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1579      cairo_set_source_surface(cr, priv->overlay, OSD_X, OSD_Y);  
1580        gint x, y;
1581    
1582    #ifdef OSD_SCALE
1583        x =  OSD_X;
1584        y = -OSD_Y;
1585        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1586        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1587    
1588        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1589        cairo_paint(cr);
1590    #endif
1591    
1592    #ifdef OSD_CROSSHAIR
1593        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1594        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1595    
1596        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1597        cairo_paint(cr);
1598    #endif
1599    
1600    #ifdef OSD_COORDINATES
1601        x = -OSD_X;
1602        y = -OSD_Y;
1603        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1604        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1605    
1606        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1607      cairo_paint(cr);      cairo_paint(cr);
1608    #endif
1609    
1610    #ifdef OSD_BALLOON
1611        if(priv->balloon.surface) {
1612    
1613            /* convert given lat lon into screen coordinates */
1614            gint x, y;
1615            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1616                                          priv->balloon.lat, priv->balloon.lon,
1617                                          &x, &y);
1618    
1619            /* check if balloon needs to be rerendered */
1620            osd_render_balloon(osd);
1621    
1622            cairo_set_source_surface(cr, priv->balloon.surface,
1623                                     x + priv->balloon.offset_x,
1624                                     y + priv->balloon.offset_y);
1625            cairo_paint(cr);
1626        }
1627    #endif
1628    
1629        x = OSD_X;
1630        if(x < 0)
1631            x += osd->widget->allocation.width - OSD_W;
1632    
1633        y = OSD_Y;
1634        if(y < 0)
1635            y += osd->widget->allocation.height - OSD_H;
1636    
1637        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1638        cairo_paint(cr);
1639    
1640    #ifdef OSD_SOURCE_SEL
1641        if(!priv->source_sel.handler_id) {
1642            /* the OSD source selection is not being animated */
1643            if(!priv->source_sel.expanded)
1644                x = osd->widget->allocation.width - OSD_S_W;
1645            else
1646                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1647        } else
1648            x = priv->source_sel.shift;
1649    
1650        y = OSD_S_Y;
1651        if(OSD_S_Y < 0) {
1652            if(!priv->source_sel.expanded)
1653                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1654            else
1655                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1656        }
1657    
1658        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1659        cairo_paint(cr);
1660    #endif
1661    
1662      cairo_destroy(cr);      cairo_destroy(cr);
1663  }  }
1664    
1665  static void  static void
1666  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1667  {  {
1668      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1669    
1670      if (priv->overlay)      if (priv->controls.surface)
1671           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
1672    
1673    #ifdef OSD_SOURCE_SEL
1674        if(priv->source_sel.handler_id)
1675            gtk_timeout_remove(priv->source_sel.handler_id);
1676    
1677        if (priv->source_sel.surface)
1678             cairo_surface_destroy(priv->source_sel.surface);
1679    #endif
1680    
1681    #ifdef OSD_SCALE
1682        if (priv->scale.surface)
1683             cairo_surface_destroy(priv->scale.surface);
1684    #endif
1685    
1686    #ifdef OSD_CROSSHAIR
1687        if (priv->crosshair.surface)
1688             cairo_surface_destroy(priv->crosshair.surface);
1689    #endif
1690    
1691    #ifdef OSD_COORDINATES
1692        if (priv->coordinates.surface)
1693             cairo_surface_destroy(priv->coordinates.surface);
1694    #endif
1695    
1696    #ifdef OSD_BALLOON
1697        if (priv->balloon.surface)
1698             cairo_surface_destroy(priv->balloon.surface);
1699    #endif
1700    
1701      g_free(priv);      g_free(priv);
1702  }  }
1703    
1704    static gboolean
1705    osd_busy(osm_gps_map_osd_t *osd)
1706    {
1707    #ifdef OSD_SOURCE_SEL
1708        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1709        return (priv->source_sel.handler_id != 0);
1710    #else
1711        return FALSE;
1712    #endif
1713    }
1714    
1715  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1716      .draw       = osm_gps_map_osd_draw,      .widget     = NULL,
1717      .check      = osm_gps_map_osd_check,  
1718      .render     = osm_gps_map_osd_render,      .draw       = osd_draw,
1719      .free       = osm_gps_map_osd_free,      .check      = osd_check,
1720        .render     = osd_render,
1721        .free       = osd_free,
1722        .busy       = osd_busy,
1723    
1724      .cb         = NULL,      .cb         = NULL,
1725      .data       = NULL,      .data       = NULL,
# Line 418  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1733  osm_gps_map_osd_classic_init(OsmGpsMap *
1733  {  {
1734      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);
1735    
1736      osd_classic.priv = priv;  #ifdef OSD_BALLOON
1737        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1738        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1739    #endif
1740    
1741      /* 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];  
1742    
1743      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1744  }  }
1745    
1746    #ifdef OSD_GPS_BUTTON
1747  /* 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 */
1748  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
1749  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1750                                     gpointer data) {
1751      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1752      g_return_if_fail (osd);      g_return_if_fail (osd);
1753    
1754      osd->cb = cb;      osd->cb = cb;
# Line 445  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1760  void osm_gps_map_osd_enable_gps (OsmGpsM
1760    
1761      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1762  }  }
1763    #endif
1764    
1765    osd_button_t
1766    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1767        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1768        g_return_val_if_fail (osd, OSD_NONE);
1769    
1770        return osd_check(osd, TRUE, x, y);
1771    }
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