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

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revision 77 by harbaum, Tue Aug 25 12:49:03 2009 UTC revision 120 by harbaum, Sat Sep 19 19:19:42 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  /* OSD_DIAMETER */  /* OSD_DIAMETER */
# Line 32  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    #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        printf("click at %d/%d\n", x, y);
289    
290        xs += priv->balloon.rect.x + priv->balloon.offset_x;
291        ys += priv->balloon.rect.y + priv->balloon.offset_y;
292    
293        printf("balloon at %d/%d/%d/%d\n",
294               xs, ys,
295               xs + priv->balloon.rect.w,
296               ys + priv->balloon.rect.h);
297    
298        gboolean is_in =
299            (x > xs) && (x < xs + priv->balloon.rect.w) &&
300            (y > ys) && (y < ys + priv->balloon.rect.h);
301    
302        /* handle the fact that the balloon may have been created by the */
303        /* button down event */
304        if(!is_in && !down && !priv->balloon.just_created) {
305            /* the user actually clicked outside the balloon */
306    
307            /* close the balloon! */
308            osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
309        }
310    
311        return is_in;
312    }
313    
314    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
315        g_return_if_fail (OSM_IS_GPS_MAP (map));
316    
317        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
318        g_return_if_fail (osd);
319    
320        osd_priv_t *priv = (osd_priv_t*)osd->priv;
321        g_return_if_fail (priv);
322    
323        if(priv->balloon.surface) {
324            cairo_surface_destroy(priv->balloon.surface);
325            priv->balloon.surface = NULL;
326            priv->balloon.lat = OSM_GPS_MAP_INVALID;
327            priv->balloon.lon = OSM_GPS_MAP_INVALID;
328        }
329        osm_gps_map_redraw(map);
330    }
331    
332    void
333    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
334                                  OsmGpsMapBalloonCallback cb, gpointer data) {
335        g_return_if_fail (OSM_IS_GPS_MAP (map));
336    
337        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
338        g_return_if_fail (osd);
339    
340        osd_priv_t *priv = (osd_priv_t*)osd->priv;
341        g_return_if_fail (priv);
342    
343        osm_gps_map_osd_clear_balloon (map);
344    
345        /* allocate balloon surface */
346        priv->balloon.surface =
347            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
348                                       BALLOON_W+2, BALLOON_H+2);
349    
350        priv->balloon.lat = latitude;
351        priv->balloon.lon = longitude;
352        priv->balloon.cb = cb;
353        priv->balloon.data = data;
354        priv->balloon.just_created = TRUE;
355    
356        priv->balloon.orientation = -1;
357    
358        osd_render_balloon(osd);
359    
360        osm_gps_map_redraw(map);
361    }
362    
363    #endif // OSD_BALLOON
364    
365  /* position and extent of bounding box */  /* position and extent of bounding box */
366  #ifndef OSD_X  #ifndef OSD_X
367  #define OSD_X      (10)  #define OSD_X      (10)
# Line 100  typedef struct { Line 422  typedef struct {
422    
423  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
424  static void  static void
425  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
426  {  {
427      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
428      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 109  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 431  osm_gps_map_osd_zoom_shape(cairo_t *cr,
431      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);
432  }  }
433    
434    /* ------------------- color/shadow functions ----------------- */
435    
436    #ifndef OSD_COLOR
437    /* if no color has been specified we just use the gdks default colors */
438    static void
439    osd_labels(cairo_t *cr, gint width, gboolean enabled,
440                           GdkColor *fg, GdkColor *disabled) {
441        if(enabled)  gdk_cairo_set_source_color(cr, fg);
442        else         gdk_cairo_set_source_color(cr, disabled);
443        cairo_set_line_width (cr, width);
444    }
445    #else
446    static void
447    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
448        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
449        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
450        cairo_set_line_width (cr, width);
451    }
452    #endif
453    
454    #ifdef OSD_SHADOW_ENABLE
455    static void
456    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
457        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
458        cairo_set_line_width (cr, width);
459    }
460    #endif
461    
462  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
463  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
464  static void  static void
465  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
466  {  {
467      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);
468  }  }
469  #endif  #endif
470    
471    #ifdef OSD_SHADOW_ENABLE
472    static void
473    osd_shape_shadow(cairo_t *cr) {
474        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
475        cairo_fill (cr);
476        cairo_stroke (cr);
477    }
478    #endif
479    
480    #ifndef OSD_COLOR
481    /* if no color has been specified we just use the gdks default colors */
482    static void
483    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
484        gdk_cairo_set_source_color(cr, bg);
485        cairo_fill_preserve (cr);
486        gdk_cairo_set_source_color(cr, fg);
487        cairo_set_line_width (cr, 1);
488        cairo_stroke (cr);
489    }
490    #else
491    static void
492    osd_shape(cairo_t *cr) {
493        cairo_set_source_rgb (cr, OSD_COLOR_BG);
494        cairo_fill_preserve (cr);
495        cairo_set_source_rgb (cr, OSD_COLOR);
496        cairo_set_line_width (cr, 1);
497        cairo_stroke (cr);
498    }
499    #endif
500    
501    
502  static gboolean  static gboolean
503  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)
504  {  {
# Line 127  osm_gps_map_in_circle(gint x, gint y, gi Line 508  osm_gps_map_in_circle(gint x, gint y, gi
508  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
509  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
510  static osd_button_t  static osd_button_t
511  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
512  {  {
513      /* within entire dpad circle */      /* within entire dpad circle */
514      if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD))      if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD))
# Line 162  osm_gps_map_osd_check_dpad(gint x, gint Line 543  osm_gps_map_osd_check_dpad(gint x, gint
543    
544  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
545  static osd_button_t  static osd_button_t
546  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
547      if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {      if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
548    
549          /* within circle around (-) label */          /* within circle around (-) label */
# Line 191  osm_gps_map_osd_check_zoom(gint x, gint Line 572  osm_gps_map_osd_check_zoom(gint x, gint
572      return OSD_NONE;      return OSD_NONE;
573  }  }
574    
575  static osd_button_t  #ifdef OSD_SOURCE_SEL
576  osm_gps_map_osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  
577      osd_button_t but = OSD_NONE;  /* place source selection at right border */
578    #define OSD_S_RAD (Z_RAD)
579    #define OSD_S_X   (-OSD_X)
580    #define OSD_S_Y   (OSD_Y)
581    #define OSD_S_PW  (2 * Z_RAD)
582    #define OSD_S_W   (OSD_S_PW)
583    #define OSD_S_PH  (2 * Z_RAD)
584    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
585    
586    /* size of usable area when expanded */
587    #define OSD_S_AREA_W (priv->source_sel.width)
588    #define OSD_S_AREA_H (priv->source_sel.height)
589    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
590    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
591    
592    /* internal value to draw the arrow on the "puller" */
593    #define OSD_S_D0  (OSD_S_RAD/2)
594    #ifndef OSD_FONT_SIZE
595    #define OSD_FONT_SIZE 16.0
596    #endif
597    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
598    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
599    
600    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
601    /* or the entire menu incl. the puller (expanded) */
602    static void
603    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
604        if(!priv->source_sel.expanded) {
605            /* just draw the puller */
606            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
607            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
608            cairo_line_to (cr, x + OSD_S_PW, y);
609        } else {
610            /* draw the puller and the area itself */
611            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
612            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
613            if(OSD_S_Y > 0) {
614                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
615                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
616            } else {
617                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
618                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
619                cairo_line_to (cr, x + OSD_S_PW, y);
620            }
621            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
622            cairo_close_path (cr);
623        }
624    }
625    
626      x -= OSD_X;  static void
627      y -= OSD_Y;  osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
628        osd_priv_t *priv = (osd_priv_t*)osd->priv;
629    
630      if(OSD_X < 0)      int py = offset + OSD_S_RAD - OSD_S_D0;
         x -= (osd->widget->allocation.width - OSD_W);  
631    
632      if(OSD_Y < 0)      if(!priv->source_sel.expanded) {
633          y -= (osd->widget->allocation.height - OSD_H);          /* draw the "puller" open (<) arrow */
634            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
635            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
636            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
637        } else {
638            if(OSD_S_Y < 0)
639                py += OSD_S_AREA_H - OSD_S_PH;
640    
641            /* draw the "puller" close (>) arrow */
642            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
643            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
644            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
645            cairo_stroke(cr);
646    
647            /* don't draw a shadow for the text content */
648            if(offset == 1) {
649                gint source;
650                g_object_get(osd->widget, "map-source", &source, NULL);
651    
652                cairo_select_font_face (cr, "Sans",
653                                        CAIRO_FONT_SLANT_NORMAL,
654                                        CAIRO_FONT_WEIGHT_BOLD);
655                cairo_set_font_size (cr, OSD_FONT_SIZE);
656    
657                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
658                    OSM_GPS_MAP_SOURCE_LAST;
659                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
660                    cairo_text_extents_t extents;
661                    const char *src = osm_gps_map_source_get_friendly_name(i);
662                    cairo_text_extents (cr, src, &extents);
663    
664                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
665                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
666    
667                    /* draw filled rectangle if selected */
668                    if(source == i) {
669                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
670                                        y - OSD_TEXT_SKIP,
671                                        priv->source_sel.width - OSD_TEXT_BORDER,
672                                        step + OSD_TEXT_SKIP);
673                        cairo_fill(cr);
674    
675      /* first do a rough test for the OSD area. */                      /* temprarily draw with background color */
676      /* this is just to avoid an unnecessary detailed test */  #ifndef OSD_COLOR
677      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {                      GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
678  #ifndef OSD_NO_DPAD                      gdk_cairo_set_source_color(cr, &bg);
679          but = osm_gps_map_osd_check_dpad(x, y);  #else
680                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
681  #endif  #endif
682                    }
683    
684          if(but == OSD_NONE)                  cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
685              but = osm_gps_map_osd_check_zoom(x, y);                  cairo_show_text (cr, src);
     }  
686    
687      return but;                  /* restore color */
688                    if(source == i) {
689    #ifndef OSD_COLOR
690                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
691                        gdk_cairo_set_source_color(cr, &fg);
692    #else
693                        cairo_set_source_rgb (cr, OSD_COLOR);
694    #endif
695                    }
696                }
697            }
698        }
699  }  }
700    
701    static void
702    osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
703        osd_priv_t *priv = (osd_priv_t*)osd->priv;
704    
705        if(priv->source_sel.rendered && !force_rerender)
706            return;
707    
708        priv->source_sel.rendered = TRUE;
709    
710    #ifndef OSD_COLOR
711        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
712        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
713        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
714    #endif
715    
716        /* draw source selector */
717        cairo_t *cr = cairo_create(priv->source_sel.surface);
718        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
719        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
720        cairo_paint(cr);
721        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
722    
723  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
724  static void      osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
725  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);  
 }  
726  #endif  #endif
727    
728        osd_source_shape(priv, cr, 1, 1);
729  #ifndef OSD_COLOR  #ifndef OSD_COLOR
730  /* if no color has been specified we just use the gdks default colors */      osd_shape(cr, &bg, &fg);
731  static void  #else
732  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {      osd_shape(cr);
733      gdk_cairo_set_source_color(cr, bg);  #endif
734      cairo_fill_preserve (cr);  
735      gdk_cairo_set_source_color(cr, fg);  #ifdef OSD_SHADOW_ENABLE
736      cairo_set_line_width (cr, 1);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
737        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
738      cairo_stroke (cr);      cairo_stroke (cr);
739  }  #endif
740    #ifndef OSD_COLOR
741        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
742  #else  #else
743  static void      osd_labels(cr, Z_RAD/3, TRUE);
744  osm_gps_map_osd_shape(cairo_t *cr) {  #endif
745      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);  
746      cairo_stroke (cr);      cairo_stroke (cr);
747    
748        cairo_destroy(cr);
749  }  }
750    
751    /* re-allocate the buffer used to draw the menu. This is used */
752    /* to collapse/expand the buffer */
753    static void
754    osd_source_reallocate(osm_gps_map_osd_t *osd) {
755        osd_priv_t *priv = (osd_priv_t*)osd->priv;
756    
757        /* re-allocate offscreen bitmap */
758        g_assert (priv->source_sel.surface);
759    
760        int w = OSD_S_W, h = OSD_S_H;
761        if(priv->source_sel.expanded) {
762            cairo_text_extents_t extents;
763    
764            /* determine content size */
765            cairo_t *cr = cairo_create(priv->source_sel.surface);
766            cairo_select_font_face (cr, "Sans",
767                                    CAIRO_FONT_SLANT_NORMAL,
768                                    CAIRO_FONT_WEIGHT_BOLD);
769            cairo_set_font_size (cr, OSD_FONT_SIZE);
770    
771            /* calculate menu size */
772            int i, max_h = 0, max_w = 0;
773            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
774                const char *src = osm_gps_map_source_get_friendly_name(i);
775                cairo_text_extents (cr, src, &extents);
776    
777                if(extents.width > max_w) max_w = extents.width;
778                if(extents.height > max_h) max_h = extents.height;
779            }
780            cairo_destroy(cr);
781    
782            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
783            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
784                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
785    
786            w = OSD_S_EXP_W;
787            h = OSD_S_EXP_H;
788        }
789    
790        cairo_surface_destroy(priv->source_sel.surface);
791        priv->source_sel.surface =
792            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
793    
794        osd_render_source_sel(osd, TRUE);
795    }
796    
797    #define OSD_HZ      15
798    #define OSD_TIME    500
799    
800    static gboolean osd_source_animate(gpointer data) {
801        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
802        osd_priv_t *priv = (osd_priv_t*)osd->priv;
803        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
804        gboolean done = FALSE;
805        priv->source_sel.count += priv->source_sel.dir;
806    
807        /* shifting in */
808        if(priv->source_sel.dir < 0) {
809            if(priv->source_sel.count <= 0) {
810                priv->source_sel.count = 0;
811                done = TRUE;
812            }
813        } else {
814            if(priv->source_sel.count >= 1000) {
815                priv->source_sel.expanded = FALSE;
816                osd_source_reallocate(osd);
817    
818                priv->source_sel.count = 1000;
819                done = TRUE;
820            }
821        }
822    
823    
824        /* count runs linearly from 0 to 1000, map this nicely onto a position */
825    
826        /* nice sinoid mapping */
827        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
828        priv->source_sel.shift =
829            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
830            m * diff;
831    
832        /* make sure the screen is updated */
833        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
834    
835        /* stop animation if done */
836        if(done)
837            priv->source_sel.handler_id = 0;
838    
839        return !done;
840    }
841    
842    /* switch between expand and collapse mode of source selection */
843    static void
844    osd_source_toggle(osm_gps_map_osd_t *osd)
845    {
846        osd_priv_t *priv = (osd_priv_t*)osd->priv;
847    
848        /* ignore clicks while animation is running */
849        if(priv->source_sel.handler_id)
850            return;
851    
852        /* expand immediately, collapse is handle at the end of the */
853        /* collapse animation */
854        if(!priv->source_sel.expanded) {
855            priv->source_sel.expanded = TRUE;
856            osd_source_reallocate(osd);
857    
858            priv->source_sel.count = 1000;
859            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
860            priv->source_sel.dir = -1000/OSD_HZ;
861        } else {
862            priv->source_sel.count =  0;
863            priv->source_sel.shift = osd->widget->allocation.width -
864                OSD_S_EXP_W + OSD_S_X;
865            priv->source_sel.dir = +1000/OSD_HZ;
866        }
867    
868        /* start timer to handle animation */
869        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
870                                                      osd_source_animate, osd);
871    }
872    
873    /* check if the user clicked inside the source selection area */
874    static osd_button_t
875    osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
876        osd_priv_t *priv = (osd_priv_t*)osd->priv;
877    
878        if(!priv->source_sel.expanded)
879            x -= osd->widget->allocation.width - OSD_S_W;
880        else
881            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
882    
883        if(OSD_S_Y > 0)
884            y -= OSD_S_Y;
885        else
886            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
887    
888        /* within square around puller? */
889        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
890            /* really within puller shape? */
891            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
892                /* expand source selector */
893                if(down)
894                    osd_source_toggle(osd);
895    
896                /* tell upper layers that user clicked some background element */
897                /* of the OSD */
898                return OSD_BG;
899            }
900        }
901    
902        /* check for clicks into data area */
903        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
904            /* re-adjust from puller top to content top */
905            if(OSD_S_Y < 0)
906                y += OSD_S_EXP_H - OSD_S_PH;
907    
908            if(x > OSD_S_PW &&
909               x < OSD_S_PW + OSD_S_EXP_W &&
910               y > 0 &&
911               y < OSD_S_EXP_H) {
912    
913                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
914                    / OSM_GPS_MAP_SOURCE_LAST;
915    
916                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
917                y /= step;
918                y += 1;
919    
920                if(down) {
921                    gint old = 0;
922                    g_object_get(osd->widget, "map-source", &old, NULL);
923    
924                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
925                       y <= OSM_GPS_MAP_SOURCE_LAST &&
926                       old != y) {
927                        g_object_set(osd->widget, "map-source", y, NULL);
928    
929                        osd_render_source_sel(osd, TRUE);
930                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
931                    }
932                }
933    
934                /* return "clicked in OSD background" to prevent further */
935                /* processing by application */
936                return OSD_BG;
937            }
938        }
939    
940        return OSD_NONE;
941    }
942    #endif // OSD_SOURCE_SEL
943    
944    static osd_button_t
945    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
946        osd_button_t but = OSD_NONE;
947    
948    #ifdef OSD_BALLOON
949        if(down) {
950            /* needed to handle balloons that are created at click */
951            osd_priv_t *priv = (osd_priv_t*)osd->priv;
952            priv->balloon.just_created = FALSE;
953        }
954    #endif
955    
956    #ifdef OSD_SOURCE_SEL
957        /* the source selection area is handles internally */
958        but = osd_source_check(osd, down, x, y);
959    #endif
960    
961        if(but == OSD_NONE) {
962            gint mx = x - OSD_X;
963            gint my = y - OSD_Y;
964    
965            if(OSD_X < 0)
966                mx -= (osd->widget->allocation.width - OSD_W);
967    
968            if(OSD_Y < 0)
969                my -= (osd->widget->allocation.height - OSD_H);
970    
971            /* first do a rough test for the OSD area. */
972            /* this is just to avoid an unnecessary detailed test */
973            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
974    #ifndef OSD_NO_DPAD
975                but = osd_check_dpad(mx, my);
976  #endif  #endif
977            }
978    
979            if(but == OSD_NONE)
980                but = osd_check_zoom(mx, my);
981        }
982    
983    #ifdef OSD_BALLOON
984        if(but == OSD_NONE) {
985            /* check if user clicked into balloon */
986            if(osd_balloon_check(osd, down, x, y))
987                but = OSD_BG;
988        }
989    #endif
990    
991        return but;
992    }
993    
994  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
995  static void  static void
996  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
997      /* move reference to dpad center */      /* move reference to dpad center */
998      x += D_RAD;      x += D_RAD;
999      y += D_RAD;      y += D_RAD;
# Line 285  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 1028  osm_gps_map_osd_dpad_labels(cairo_t *cr,
1028  /* this is either drawn in the center of the dpad (if present) */  /* this is either drawn in the center of the dpad (if present) */
1029  /* or in the middle of the zoom area */  /* or in the middle of the zoom area */
1030  static void  static void
1031  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
1032      /* move reference to dpad center */      /* move reference to dpad center */
1033      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
1034      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
# Line 308  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi Line 1051  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
1051  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
1052    
1053  static void  static void
1054  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
1055      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
1056      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
1057    
# Line 318  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 1061  osm_gps_map_osd_zoom_labels(cairo_t *cr,
1061      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1062  }  }
1063    
1064  #ifndef OSD_COLOR  #ifdef OSD_COORDINATES
1065  /* if no color has been specified we just use the gdks default colors */  
1066  static void  #ifndef OSD_COORDINATES_FONT_SIZE
1067  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,  #define OSD_COORDINATES_FONT_SIZE 12
1068                         GdkColor *fg, GdkColor *disabled) {  #endif
1069      if(enabled)  gdk_cairo_set_source_color(cr, fg);  
1070      else         gdk_cairo_set_source_color(cr, disabled);  #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1071      cairo_set_line_width (cr, width);  
1072      cairo_stroke (cr);  #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1073    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
1074    
1075    /* these can be overwritten with versions that support */
1076    /* localization */
1077    #ifndef OSD_COORDINATES_CHR_N
1078    #define OSD_COORDINATES_CHR_N  "N"
1079    #endif
1080    #ifndef OSD_COORDINATES_CHR_S
1081    #define OSD_COORDINATES_CHR_S  "S"
1082    #endif
1083    #ifndef OSD_COORDINATES_CHR_E
1084    #define OSD_COORDINATES_CHR_E  "E"
1085    #endif
1086    #ifndef OSD_COORDINATES_CHR_W
1087    #define OSD_COORDINATES_CHR_W  "W"
1088    #endif
1089    
1090    
1091    
1092    /* this is the classic geocaching notation */
1093    static char
1094    *osd_latitude_str(float latitude) {
1095        char *c = OSD_COORDINATES_CHR_N;
1096        float integral, fractional;
1097    
1098        if(isnan(latitude))
1099            return NULL;
1100    
1101        if(latitude < 0) {
1102            latitude = fabs(latitude);
1103            c = OSD_COORDINATES_CHR_S;
1104        }
1105    
1106        fractional = modff(latitude, &integral);
1107    
1108        return g_strdup_printf("%s %02d° %06.3f'",
1109                               c, (int)integral, fractional*60.0);
1110  }  }
1111  #else  
1112    static char
1113    *osd_longitude_str(float longitude) {
1114        char *c = OSD_COORDINATES_CHR_E;
1115        float integral, fractional;
1116    
1117        if(isnan(longitude))
1118            return NULL;
1119    
1120        if(longitude < 0) {
1121            longitude = fabs(longitude);
1122            c = OSD_COORDINATES_CHR_W;
1123        }
1124    
1125        fractional = modff(longitude, &integral);
1126    
1127        return g_strdup_printf("%s %03d° %06.3f'",
1128                               c, (int)integral, fractional*60.0);
1129    }
1130    
1131  static void  static void
1132  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_coordinates(osm_gps_map_osd_t *osd)
1133      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  {
1134      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1135      cairo_set_line_width (cr, width);  
1136        /* get current map position */
1137        gfloat lat, lon;
1138        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1139    
1140        /* check if position has changed enough to require redraw */
1141        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1142            /* 1/60000 == 1/1000 minute */
1143            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1144               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1145                return;
1146    
1147        priv->coordinates.lat = lat;
1148        priv->coordinates.lon = lon;
1149    
1150        /* first fill with transparency */
1151        cairo_t *cr = cairo_create(priv->coordinates.surface);
1152        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1153        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1154        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1155        cairo_paint(cr);
1156        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1157    
1158        cairo_select_font_face (cr, "Sans",
1159                                CAIRO_FONT_SLANT_NORMAL,
1160                                CAIRO_FONT_WEIGHT_BOLD);
1161        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1162    
1163        char *latitude = osd_latitude_str(lat);
1164        char *longitude = osd_longitude_str(lon);
1165    
1166        cairo_text_extents_t lat_extents, lon_extents;
1167        cairo_text_extents (cr, latitude, &lat_extents);
1168        cairo_text_extents (cr, longitude, &lon_extents);
1169    
1170        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1171        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1172        cairo_move_to (cr,
1173                       (OSD_COORDINATES_W - lat_extents.width)/2,
1174                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1175        cairo_text_path (cr, latitude);
1176        cairo_move_to (cr,
1177                       (OSD_COORDINATES_W - lon_extents.width)/2,
1178                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1179                       OSD_COORDINATES_FONT_SIZE);
1180        cairo_text_path (cr, longitude);
1181      cairo_stroke (cr);      cairo_stroke (cr);
1182    
1183        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1184        cairo_move_to (cr,
1185                       (OSD_COORDINATES_W - lat_extents.width)/2,
1186                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1187        cairo_show_text (cr, latitude);
1188        cairo_move_to (cr,
1189                       (OSD_COORDINATES_W - lon_extents.width)/2,
1190                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1191                       OSD_COORDINATES_FONT_SIZE);
1192        cairo_show_text (cr, longitude);
1193    
1194        g_free(latitude);
1195        g_free(longitude);
1196    
1197        cairo_destroy(cr);
1198  }  }
1199    #endif  // OSD_COORDINATES
1200    
1201    #ifdef OSD_CROSSHAIR
1202    
1203    #ifndef OSD_CROSSHAIR_RADIUS
1204    #define OSD_CROSSHAIR_RADIUS 10
1205  #endif  #endif
1206    
1207  #ifdef OSD_SHADOW_ENABLE  #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1208  static void  #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1209  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1210      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1211      cairo_set_line_width (cr, width);  
1212    static void
1213    osd_render_crosshair_shape(cairo_t *cr) {
1214        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1215                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1216    
1217        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1218                       OSD_CROSSHAIR_H/2);
1219        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1220        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1221                       OSD_CROSSHAIR_H/2);
1222        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1223    
1224        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1225                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1226        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1227        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1228                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1229        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1230    
1231      cairo_stroke (cr);      cairo_stroke (cr);
1232  }  }
1233    
1234    static void
1235    osd_render_crosshair(osm_gps_map_osd_t *osd)
1236    {
1237        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1238    
1239        if(priv->crosshair.rendered)
1240            return;
1241    
1242        priv->crosshair.rendered = TRUE;
1243    
1244        /* first fill with transparency */
1245        cairo_t *cr = cairo_create(priv->crosshair.surface);
1246        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1247        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1248        cairo_paint(cr);
1249        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1250    
1251        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1252    
1253        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1254        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1255        osd_render_crosshair_shape(cr);
1256    
1257        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1258        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1259        osd_render_crosshair_shape(cr);
1260    
1261        cairo_destroy(cr);
1262    }
1263    #endif
1264    
1265    #ifdef OSD_SCALE
1266    
1267    #ifndef OSD_SCALE_FONT_SIZE
1268    #define OSD_SCALE_FONT_SIZE 12
1269  #endif  #endif
1270    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1271    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1272    
1273    /* various parameters used to create the scale */
1274    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1275    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1276    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1277    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1278    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1279    
1280  static void  static void
1281  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_scale(osm_gps_map_osd_t *osd)
1282    {
1283      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1284    
1285        /* this only needs to be rendered if the zoom has changed */
1286        gint zoom;
1287        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1288        if(zoom == priv->scale.zoom)
1289            return;
1290    
1291        priv->scale.zoom = zoom;
1292    
1293        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1294    
1295      /* first fill with transparency */      /* first fill with transparency */
1296      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->scale.surface);
1297      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1298      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);
1299        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1300      cairo_paint(cr);      cairo_paint(cr);
1301        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1302    
1303        /* determine the size of the scale width in meters */
1304        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1305    
1306        /* scale this to useful values */
1307        int exp = logf(width)*M_LOG10E;
1308        int mant = width/pow(10,exp);
1309        int width_metric = mant * pow(10,exp);
1310        char *dist_str = NULL;
1311        if(width_metric<1000)
1312            dist_str = g_strdup_printf("%u m", width_metric);
1313        else
1314            dist_str = g_strdup_printf("%u km", width_metric/1000);
1315        width_metric /= m_per_pix;
1316    
1317        /* and now the hard part: scale for useful imperial values :-( */
1318        /* try to convert to feet, 1ft == 0.3048 m */
1319        width /= 0.3048;
1320        float imp_scale = 0.3048;
1321        char *dist_imp_unit = "ft";
1322    
1323        if(width >= 100) {
1324            /* 1yd == 3 feet */
1325            width /= 3.0;
1326            imp_scale *= 3.0;
1327            dist_imp_unit = "yd";
1328    
1329            if(width >= 1760.0) {
1330                /* 1mi == 1760 yd */
1331                width /= 1760.0;
1332                imp_scale *= 1760.0;
1333                dist_imp_unit = "mi";
1334            }
1335        }
1336    
1337        /* also convert this to full tens/hundreds */
1338        exp = logf(width)*M_LOG10E;
1339        mant = width/pow(10,exp);
1340        int width_imp = mant * pow(10,exp);
1341        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1342    
1343        /* convert back to pixels */
1344        width_imp *= imp_scale;
1345        width_imp /= m_per_pix;
1346    
1347        cairo_select_font_face (cr, "Sans",
1348                                CAIRO_FONT_SLANT_NORMAL,
1349                                CAIRO_FONT_WEIGHT_BOLD);
1350        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1351        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1352    
1353        cairo_text_extents_t extents;
1354        cairo_text_extents (cr, dist_str, &extents);
1355    
1356        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1357        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1358        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1359        cairo_text_path (cr, dist_str);
1360        cairo_stroke (cr);
1361        cairo_move_to (cr, 2*OSD_SCALE_FD,
1362                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1363        cairo_text_path (cr, dist_str_imp);
1364        cairo_stroke (cr);
1365    
1366        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1367        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1368        cairo_show_text (cr, dist_str);
1369        cairo_move_to (cr, 2*OSD_SCALE_FD,
1370                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1371        cairo_show_text (cr, dist_str_imp);
1372    
1373        g_free(dist_str);
1374        g_free(dist_str_imp);
1375    
1376        /* draw white line */
1377        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1378        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1379        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1380        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1381        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1382        cairo_rel_line_to (cr, width_metric, 0);
1383        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1384        cairo_stroke(cr);
1385        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1386        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1387        cairo_rel_line_to (cr, width_imp, 0);
1388        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1389        cairo_stroke(cr);
1390    
1391        /* draw black line */
1392        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1393        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1394        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1395        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1396        cairo_rel_line_to (cr, width_metric, 0);
1397        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1398        cairo_stroke(cr);
1399        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1400        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1401        cairo_rel_line_to (cr, width_imp, 0);
1402        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1403        cairo_stroke(cr);
1404    
1405        cairo_destroy(cr);
1406    }
1407    #endif
1408    
1409    static void
1410    osd_render_controls(osm_gps_map_osd_t *osd)
1411    {
1412        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1413    
1414        if(priv->controls.rendered
1415    #ifdef OSD_GPS_BUTTON
1416           && (priv->controls.gps_enabled == (osd->cb != NULL))
1417    #endif
1418           )
1419            return;
1420    
1421    #ifdef OSD_GPS_BUTTON
1422        priv->controls.gps_enabled = (osd->cb != NULL);
1423    #endif
1424        priv->controls.rendered = TRUE;
1425    
1426  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1427      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
# Line 363  osm_gps_map_osd_render(osm_gps_map_osd_t Line 1429  osm_gps_map_osd_render(osm_gps_map_osd_t
1429      GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];      GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1430  #endif  #endif
1431    
1432        /* first fill with transparency */
1433        cairo_t *cr = cairo_create(priv->controls.surface);
1434        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1435        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1436        cairo_paint(cr);
1437      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1438    
1439      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1440  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1441      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1442      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1443  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1444      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1445      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1446  #endif  #endif
1447  #endif  #endif
1448    
1449      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1450    
1451      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1452  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1453      osm_gps_map_osd_shape(cr, &bg, &fg);      osd_shape(cr, &bg, &fg);
1454  #else  #else
1455      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1456  #endif  #endif
1457  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1458      osm_gps_map_osd_dpad_shape(cr, x, y);      osd_dpad_shape(cr, 1, 1);
1459  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1460      osm_gps_map_osd_shape(cr, &bg, &fg);      osd_shape(cr, &bg, &fg);
1461  #else  #else
1462      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1463  #endif  #endif
1464  #endif  #endif
1465    
1466      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1467    
1468  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1469      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1470        osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1471  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1472      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1473  #endif  #endif
1474      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);      cairo_stroke(cr);
1475  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
1476      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1477      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);      osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1478        cairo_stroke(cr);
1479  #endif  #endif
1480  #endif  #endif
1481    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
 #ifndef OSD_NO_DPAD  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
 #endif  
1482  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1483      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1484  #else  #else
1485      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1486  #endif  #endif
1487  #ifdef OSD_GPS_BUTTON      osd_zoom_labels(cr, 1, 1);
1488      osm_gps_map_osd_dpad_gps(cr, x, y);  #ifndef OSD_NO_DPAD
1489        osd_dpad_labels(cr, 1, 1);
1490    #endif
1491        cairo_stroke(cr);
1492    
1493  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1494      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1495  #else  #else
1496      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1497  #endif  #endif
1498    #ifdef OSD_GPS_BUTTON
1499        osd_dpad_gps(cr, 1, 1);
1500  #endif  #endif
1501        cairo_stroke(cr);
1502    
1503      cairo_destroy(cr);      cairo_destroy(cr);
1504  }  }
1505    
1506  static void  static void
1507  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)  osd_render(osm_gps_map_osd_t *osd)
1508    {
1509        /* this function is actually called pretty often since the */
1510        /* OSD contents may have changed (due to a coordinate/zoom change). */
1511        /* The different OSD parts have to make sure that they don't */
1512        /* render unneccessarily often and thus waste CPU power */
1513    
1514        osd_render_controls(osd);
1515    
1516    #ifdef OSD_SOURCE_SEL
1517        osd_render_source_sel(osd, FALSE);
1518    #endif
1519    
1520    #ifdef OSD_SCALE
1521        osd_render_scale(osd);
1522    #endif
1523    
1524    #ifdef OSD_CROSSHAIR
1525        osd_render_crosshair(osd);
1526    #endif
1527    
1528    #ifdef OSD_COORDINATES
1529        osd_render_coordinates(osd);
1530    #endif
1531    }
1532    
1533    static void
1534    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1535  {  {
1536      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1537    
1538      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1539      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1540      if(!priv->overlay) {      if(!priv->controls.surface) {
1541          /* create overlay ... */          /* create overlay ... */
1542          priv->overlay =          priv->controls.surface =
1543              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1544    
1545            priv->controls.rendered = FALSE;
1546    #ifdef OSD_GPS_BUTTON
1547            priv->controls.gps_enabled = FALSE;
1548    #endif
1549    
1550    #ifdef OSD_SOURCE_SEL
1551            /* the initial OSD state is alway not-expanded */
1552            priv->source_sel.surface =
1553                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1554                                               OSD_S_W+2, OSD_S_H+2);
1555            priv->source_sel.rendered = FALSE;
1556    #endif
1557    
1558    #ifdef OSD_SCALE
1559            priv->scale.surface =
1560                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1561                                           OSD_SCALE_W, OSD_SCALE_H);
1562            priv->scale.zoom = -1;
1563    #endif
1564    
1565    #ifdef OSD_CROSSHAIR
1566            priv->crosshair.surface =
1567                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1568                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1569            priv->crosshair.rendered = FALSE;
1570    #endif
1571    
1572    #ifdef OSD_COORDINATES
1573            priv->coordinates.surface =
1574                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1575                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1576    
1577            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1578    #endif
1579    
1580          /* ... and render it */          /* ... and render it */
1581          osm_gps_map_osd_render(osd);          osd_render(osd);
1582      }      }
1583    
1584      // now draw this onto the original context      // now draw this onto the original context
1585      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1586    
1587      int x = OSD_X, y = OSD_Y;      gint x, y;
1588      if(OSD_X < 0)  
1589          x = osd->widget->allocation.width - OSD_W + OSD_X;  #ifdef OSD_SCALE
1590        x =  OSD_X;
1591        y = -OSD_Y;
1592        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1593        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1594    
1595        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1596        cairo_paint(cr);
1597    #endif
1598    
1599    #ifdef OSD_CROSSHAIR
1600        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1601        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1602    
1603        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1604        cairo_paint(cr);
1605    #endif
1606    
1607    #ifdef OSD_COORDINATES
1608        x = -OSD_X;
1609        y = -OSD_Y;
1610        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1611        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1612    
1613        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1614        cairo_paint(cr);
1615    #endif
1616    
1617    #ifdef OSD_BALLOON
1618        if(priv->balloon.surface) {
1619    
1620            /* convert given lat lon into screen coordinates */
1621            gint x, y;
1622            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1623                                          priv->balloon.lat, priv->balloon.lon,
1624                                          &x, &y);
1625    
1626            /* check if balloon needs to be rerendered */
1627            osd_render_balloon(osd);
1628    
1629            cairo_set_source_surface(cr, priv->balloon.surface,
1630                                     x + priv->balloon.offset_x,
1631                                     y + priv->balloon.offset_y);
1632            cairo_paint(cr);
1633        }
1634    #endif
1635    
1636        x = OSD_X;
1637        if(x < 0)
1638            x += osd->widget->allocation.width - OSD_W;
1639    
1640        y = OSD_Y;
1641        if(y < 0)
1642            y += osd->widget->allocation.height - OSD_H;
1643    
1644      if(OSD_Y < 0)      cairo_set_source_surface(cr, priv->controls.surface, x, y);
1645          y = osd->widget->allocation.height - OSD_H + OSD_Y;      cairo_paint(cr);
1646    
1647      cairo_set_source_surface(cr, priv->overlay, x, y);  #ifdef OSD_SOURCE_SEL
1648        if(!priv->source_sel.handler_id) {
1649            /* the OSD source selection is not being animated */
1650            if(!priv->source_sel.expanded)
1651                x = osd->widget->allocation.width - OSD_S_W;
1652            else
1653                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1654        } else
1655            x = priv->source_sel.shift;
1656    
1657        y = OSD_S_Y;
1658        if(OSD_S_Y < 0) {
1659            if(!priv->source_sel.expanded)
1660                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1661            else
1662                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1663        }
1664    
1665        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1666      cairo_paint(cr);      cairo_paint(cr);
1667    #endif
1668    
1669      cairo_destroy(cr);      cairo_destroy(cr);
1670  }  }
1671    
1672  static void  static void
1673  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1674  {  {
1675      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1676    
1677      if (priv->overlay)      if (priv->controls.surface)
1678           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
1679    
1680    #ifdef OSD_SOURCE_SEL
1681        if(priv->source_sel.handler_id)
1682            gtk_timeout_remove(priv->source_sel.handler_id);
1683    
1684        if (priv->source_sel.surface)
1685             cairo_surface_destroy(priv->source_sel.surface);
1686    #endif
1687    
1688    #ifdef OSD_SCALE
1689        if (priv->scale.surface)
1690             cairo_surface_destroy(priv->scale.surface);
1691    #endif
1692    
1693    #ifdef OSD_CROSSHAIR
1694        if (priv->crosshair.surface)
1695             cairo_surface_destroy(priv->crosshair.surface);
1696    #endif
1697    
1698    #ifdef OSD_COORDINATES
1699        if (priv->coordinates.surface)
1700             cairo_surface_destroy(priv->coordinates.surface);
1701    #endif
1702    
1703    #ifdef OSD_BALLOON
1704        if (priv->balloon.surface)
1705             cairo_surface_destroy(priv->balloon.surface);
1706    #endif
1707    
1708      g_free(priv);      g_free(priv);
1709  }  }
1710    
1711    static gboolean
1712    osd_busy(osm_gps_map_osd_t *osd)
1713    {
1714    #ifdef OSD_SOURCE_SEL
1715        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1716        return (priv->source_sel.handler_id != 0);
1717    #else
1718        return FALSE;
1719    #endif
1720    }
1721    
1722  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1723      .draw       = osm_gps_map_osd_draw,      .widget     = NULL,
1724      .check      = osm_gps_map_osd_check,  
1725      .render     = osm_gps_map_osd_render,      .draw       = osd_draw,
1726      .free       = osm_gps_map_osd_free,      .check      = osd_check,
1727        .render     = osd_render,
1728        .free       = osd_free,
1729        .busy       = osd_busy,
1730    
1731      .cb         = NULL,      .cb         = NULL,
1732      .data       = NULL,      .data       = NULL,
# Line 488  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1740  osm_gps_map_osd_classic_init(OsmGpsMap *
1740  {  {
1741      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);
1742    
1743    #ifdef OSD_BALLOON
1744        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1745        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1746    #endif
1747    
1748      osd_classic.priv = priv;      osd_classic.priv = priv;
1749    
1750      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
# Line 499  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1756  osm_gps_map_osd_classic_init(OsmGpsMap *
1756  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1757                                   gpointer data) {                                   gpointer data) {
1758      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1759      g_return_if_fail (osd);      g_return_if_fail (osd);
1760    
1761      osd->cb = cb;      osd->cb = cb;
# Line 512  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1768  void osm_gps_map_osd_enable_gps (OsmGpsM
1768      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1769  }  }
1770  #endif  #endif
1771    
1772    osd_button_t
1773    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1774        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1775        g_return_val_if_fail (osd, OSD_NONE);
1776    
1777        return osd_check(osd, TRUE, x, y);
1778    }
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  Added in v.120