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

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revision 86 by harbaum, Sun Aug 30 19:05:44 2009 UTC revision 133 by harbaum, Mon Oct 12 20:27:55 2009 UTC
# Line 19  Line 19 
19    
20  #include "config.h"  #include "config.h"
21  #include <stdlib.h>  // abs  #include <stdlib.h>  // abs
22  #include <math.h>    // M_PI  #include <string.h>
23    #include <math.h>    // M_PI/cos()
 #define OSD_SOURCE_SEL  
   
 #define OSD_Y  (-10)  
24    
25  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
26  /* OSD_DIAMETER */  /* OSD_DIAMETER */
# Line 36  Line 33 
33  #include <cairo.h>  #include <cairo.h>
34    
35  #include "osm-gps-map.h"  #include "osm-gps-map.h"
36    #include "converter.h"
37  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
38    
39  //the osd controls  //the osd controls
40  typedef struct {  typedef struct {
41      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
42      cairo_surface_t *overlay;      struct {
43            cairo_surface_t *surface;
44            gboolean rendered;
45    #ifdef OSD_GPS_BUTTON
46            gboolean gps_enabled;
47    #endif
48        } controls;
49    
50    #ifdef OSD_BALLOON
51        //a balloon with additional info
52        struct {
53            cairo_surface_t *surface;
54            int orientation, offset_x, offset_y;
55    
56            gboolean just_created;
57            float lat, lon;
58            OsmGpsMapRect_t rect;
59    
60            /* function called to have the user app draw the contents */
61            OsmGpsMapBalloonCallback cb;
62            gpointer data;
63        } balloon;
64    #endif
65    
66    #ifdef OSD_SCALE
67        struct {
68            cairo_surface_t *surface;
69            int zoom;
70        } scale;
71    #endif
72    
73    #ifdef OSD_CROSSHAIR
74        struct {
75            cairo_surface_t *surface;
76            gboolean rendered;
77        } crosshair;
78    #endif
79    
80    #ifdef OSD_NAV
81        struct {
82            cairo_surface_t *surface;
83            float lat, lon;
84            char *name;
85            gboolean imperial;    // display distance imperial/metric
86        } nav;
87    #endif
88    
89    #ifdef OSD_COORDINATES
90        struct {
91            cairo_surface_t *surface;
92            float lat, lon;
93        } coordinates;
94    #endif
95    
96    #ifdef OSD_SOURCE_SEL
97        struct {
98            /* values to handle the "source" menu */
99            cairo_surface_t *surface;
100            gboolean expanded;
101            gint shift, dir, count;
102            gint handler_id;
103            gint width, height;
104            gboolean rendered;
105        } source_sel;
106    #endif
107    
     cairo_surface_t *map_source;  
     gboolean expanded;  
     gint shift, dir, count;  
     gint handler_id;  
108  } osd_priv_t;  } osd_priv_t;
109    
110    #ifdef OSD_BALLOON
111    /* most visual effects are hardcoded by now, but may be made */
112    /* available via properties later */
113    #ifndef BALLOON_AREA_WIDTH
114    #define BALLOON_AREA_WIDTH           290
115    #endif
116    #ifndef BALLOON_AREA_HEIGHT
117    #define BALLOON_AREA_HEIGHT           75
118    #endif
119    #ifndef BALLOON_CORNER_RADIUS
120    #define BALLOON_CORNER_RADIUS         10
121    #endif
122    
123    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
124    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
125    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
126    #define BALLOON_TRANSPARENCY         0.8
127    #define POINTER_HEIGHT                20
128    #define POINTER_FOOT_WIDTH            20
129    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
130    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
131    #define BALLOON_SHADOW_TRANSPARENCY  0.2
132    
133    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
134    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
135    
136    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
137    
138    
139    /* draw the bubble shape. this is used twice, once for the shape and once */
140    /* for the shadow */
141    static void
142    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
143           gboolean bottom, int px, int py, int px0, int px1) {
144    
145        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
146        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
147                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
148        if(!bottom) {
149            /* insert top pointer */
150            cairo_line_to (cr, px1, y0);
151            cairo_line_to (cr, px, py);
152            cairo_line_to (cr, px0, y0);
153        }
154    
155        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
156        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
157                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
158        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
159        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
160                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
161        if(bottom) {
162            /* insert bottom pointer */
163            cairo_line_to (cr, px0, y1);
164            cairo_line_to (cr, px, py);
165            cairo_line_to (cr, px1, y1);
166        }
167    
168        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
169        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
170                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
171    
172        cairo_close_path (cr);
173    }
174    
175    static void
176    osd_render_balloon(osm_gps_map_osd_t *osd) {
177        osd_priv_t *priv = (osd_priv_t*)osd->priv;
178    
179        /* get zoom */
180        gint zoom;
181        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
182    
183        /* ------- convert given coordinate into screen position --------- */
184        gint xs, ys;
185        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
186                                          priv->balloon.lat, priv->balloon.lon,
187                                          &xs, &ys);
188    
189        gint x0 = 1, y0 = 1;
190    
191        /* check position of this relative to screen center to determine */
192        /* pointer direction ... */
193        int pointer_x, pointer_x0, pointer_x1;
194        int pointer_y;
195    
196        /* ... and calculate position */
197        int orientation = 0;
198        if(xs > osd->widget->allocation.width/2) {
199            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
200            pointer_x = x0 - priv->balloon.offset_x;
201            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
202            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
203            orientation |= 1;
204        } else {
205            priv->balloon.offset_x = -POINTER_OFFSET;
206            pointer_x = x0 - priv->balloon.offset_x;
207            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
208            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
209        }
210    
211        gboolean bottom = FALSE;
212        if(ys > osd->widget->allocation.height/2) {
213            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
214            pointer_y = y0 - priv->balloon.offset_y;
215            bottom = TRUE;
216            orientation |= 2;
217        } else {
218            priv->balloon.offset_y = 0;
219            pointer_y = y0 - priv->balloon.offset_y;
220            y0 += POINTER_HEIGHT;
221        }
222    
223        /* if required orientation equals current one, then don't render */
224        /* anything */
225        if(orientation == priv->balloon.orientation)
226            return;
227    
228        priv->balloon.orientation = orientation;
229    
230        /* calculate bottom/right of box */
231        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
232    
233        /* save balloon screen coordinates for later use */
234        priv->balloon.rect.x = x0 + BALLOON_BORDER;
235        priv->balloon.rect.y = y0 + BALLOON_BORDER;
236        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
237        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
238    
239        cairo_t *cr = cairo_create(priv->balloon.surface);
240        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
241        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
242        cairo_paint(cr);
243        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
244    
245        /* --------- draw shadow --------------- */
246        osm_gps_map_draw_balloon_shape (cr,
247                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
248                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
249                     bottom, pointer_x, pointer_y,
250                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
251    
252        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
253        cairo_fill_preserve (cr);
254        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
255        cairo_set_line_width (cr, 0);
256        cairo_stroke (cr);
257    
258        /* --------- draw main shape ----------- */
259        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
260                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
261    
262        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
263        cairo_fill_preserve (cr);
264        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
265        cairo_set_line_width (cr, 1);
266        cairo_stroke (cr);
267    
268        if (priv->balloon.cb) {
269            /* clip in case application tries to draw in */
270                /* exceed of the balloon */
271            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
272                             priv->balloon.rect.w, priv->balloon.rect.h);
273            cairo_clip (cr);
274            cairo_new_path (cr);  /* current path is not
275                                     consumed by cairo_clip() */
276    
277            priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
278        }
279    
280        cairo_destroy(cr);
281    }
282    
283    /* return true if balloon is being displayed and if */
284    /* the given coordinate is within this balloon */
285    static gboolean
286    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y)
287    {
288        osd_priv_t *priv = (osd_priv_t*)osd->priv;
289    
290        if(!priv->balloon.surface)
291            return FALSE;
292    
293        gint xs, ys;
294        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
295                                          priv->balloon.lat, priv->balloon.lon,
296                                          &xs, &ys);
297    
298        xs += priv->balloon.rect.x + priv->balloon.offset_x;
299        ys += priv->balloon.rect.y + priv->balloon.offset_y;
300    
301        gboolean is_in =
302            (x > xs) && (x < xs + priv->balloon.rect.w) &&
303            (y > ys) && (y < ys + priv->balloon.rect.h);
304    
305        /* handle the fact that the balloon may have been created by the */
306        /* button down event */
307        if(!is_in && !down && !priv->balloon.just_created) {
308            /* the user actually clicked outside the balloon */
309    
310            /* close the balloon! */
311            osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
312        }
313    
314        return is_in;
315    }
316    
317    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
318        g_return_if_fail (OSM_IS_GPS_MAP (map));
319    
320        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
321        g_return_if_fail (osd);
322    
323        osd_priv_t *priv = (osd_priv_t*)osd->priv;
324        g_return_if_fail (priv);
325    
326        if(priv->balloon.surface) {
327            cairo_surface_destroy(priv->balloon.surface);
328            priv->balloon.surface = NULL;
329            priv->balloon.lat = OSM_GPS_MAP_INVALID;
330            priv->balloon.lon = OSM_GPS_MAP_INVALID;
331        }
332        osm_gps_map_redraw(map);
333    }
334    
335    void
336    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
337                                  OsmGpsMapBalloonCallback cb, gpointer data) {
338        g_return_if_fail (OSM_IS_GPS_MAP (map));
339    
340        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
341        g_return_if_fail (osd);
342    
343        osd_priv_t *priv = (osd_priv_t*)osd->priv;
344        g_return_if_fail (priv);
345    
346        osm_gps_map_osd_clear_balloon (map);
347    
348        /* allocate balloon surface */
349        priv->balloon.surface =
350            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
351                                       BALLOON_W+2, BALLOON_H+2);
352    
353        priv->balloon.lat = latitude;
354        priv->balloon.lon = longitude;
355        priv->balloon.cb = cb;
356        priv->balloon.data = data;
357        priv->balloon.just_created = TRUE;
358    
359        priv->balloon.orientation = -1;
360    
361        osd_render_balloon(osd);
362    
363        osm_gps_map_redraw(map);
364    }
365    
366    #endif // OSD_BALLOON
367    
368  /* position and extent of bounding box */  /* position and extent of bounding box */
369  #ifndef OSD_X  #ifndef OSD_X
370  #define OSD_X      (10)  #define OSD_X      (10)
# Line 128  osd_labels(cairo_t *cr, gint width, gboo Line 444  osd_labels(cairo_t *cr, gint width, gboo
444      if(enabled)  gdk_cairo_set_source_color(cr, fg);      if(enabled)  gdk_cairo_set_source_color(cr, fg);
445      else         gdk_cairo_set_source_color(cr, disabled);      else         gdk_cairo_set_source_color(cr, disabled);
446      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
447  }  }
448  #else  #else
449  static void  static void
# Line 136  osd_labels(cairo_t *cr, gint width, gboo Line 451  osd_labels(cairo_t *cr, gint width, gboo
451      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
452      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
453      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
454  }  }
455  #endif  #endif
456    
# Line 145  static void Line 459  static void
459  osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
460      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
461      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
462  }  }
463  #endif  #endif
464    
# Line 262  osd_check_zoom(gint x, gint y) { Line 575  osd_check_zoom(gint x, gint y) {
575      return OSD_NONE;      return OSD_NONE;
576  }  }
577    
578    #ifdef OSD_SOURCE_SEL
579    
580  /* place source selection at right border */  /* place source selection at right border */
581  #define OSD_S_RAD (Z_RAD)  #define OSD_S_RAD (Z_RAD)
582  #define OSD_S_X   (-OSD_X)  #define OSD_S_X   (-OSD_X)
# Line 271  osd_check_zoom(gint x, gint y) { Line 586  osd_check_zoom(gint x, gint y) {
586  #define OSD_S_PH  (2 * Z_RAD)  #define OSD_S_PH  (2 * Z_RAD)
587  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
588    
589  /* size of usable area when exapnded */  /* size of usable area when expanded */
590  #define OSD_S_AREA_W (200)  #define OSD_S_AREA_W (priv->source_sel.width)
591  #define OSD_S_AREA_H (200)  #define OSD_S_AREA_H (priv->source_sel.height)
592  #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)  #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
593  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
594    
595  /* internal value to draw the arrow on the "puller" */  /* internal value to draw the arrow on the "puller" */
596  #define OSD_S_D0  (OSD_S_RAD/2)  #define OSD_S_D0  (OSD_S_RAD/2)
597    #ifndef OSD_FONT_SIZE
598    #define OSD_FONT_SIZE 16.0
599    #endif
600    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
601    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
602    
603    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
604    /* or the entire menu incl. the puller (expanded) */
605  static void  static void
606  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
607      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
608          /* just draw the puller */          /* just draw the puller */
609          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
610          cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);          cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
# Line 305  osd_source_shape(osd_priv_t *priv, cairo Line 627  osd_source_shape(osd_priv_t *priv, cairo
627  }  }
628    
629  static void  static void
630  osd_source_content(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {  osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
631      y += OSD_S_RAD - OSD_S_D0;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
632    
633        int py = offset + OSD_S_RAD - OSD_S_D0;
634    
635      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
636          /* draw the "puller" open (<) arrow */          /* draw the "puller" open (<) arrow */
637          cairo_move_to (cr, x + OSD_S_RAD + OSD_S_D0/2, y);          cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
638          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
639          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
640      } else {      } else {
641          if(OSD_S_Y < 0)          if(OSD_S_Y < 0)
642              y += OSD_S_AREA_H - OSD_S_PH;              py += OSD_S_AREA_H - OSD_S_PH;
643    
644          /* draw the "puller" close (>) arrow */          /* draw the "puller" close (>) arrow */
645          cairo_move_to (cr, x + OSD_S_RAD - OSD_S_D0/2, y);          cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
646          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
647          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
648            cairo_stroke(cr);
649    
650            /* don't draw a shadow for the text content */
651            if(offset == 1) {
652                gint source;
653                g_object_get(osd->widget, "map-source", &source, NULL);
654    
655                cairo_select_font_face (cr, "Sans",
656                                        CAIRO_FONT_SLANT_NORMAL,
657                                        CAIRO_FONT_WEIGHT_BOLD);
658                cairo_set_font_size (cr, OSD_FONT_SIZE);
659    
660                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
661                    OSM_GPS_MAP_SOURCE_LAST;
662                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
663                    cairo_text_extents_t extents;
664                    const char *src = osm_gps_map_source_get_friendly_name(i);
665                    cairo_text_extents (cr, src, &extents);
666    
667                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
668                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
669    
670                    /* draw filled rectangle if selected */
671                    if(source == i) {
672                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
673                                        y - OSD_TEXT_SKIP,
674                                        priv->source_sel.width - OSD_TEXT_BORDER,
675                                        step + OSD_TEXT_SKIP);
676                        cairo_fill(cr);
677    
678                        /* temprarily draw with background color */
679    #ifndef OSD_COLOR
680                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
681                        gdk_cairo_set_source_color(cr, &bg);
682    #else
683                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
684    #endif
685                    }
686    
687                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
688                    cairo_show_text (cr, src);
689    
690                    /* restore color */
691                    if(source == i) {
692    #ifndef OSD_COLOR
693                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
694                        gdk_cairo_set_source_color(cr, &fg);
695    #else
696                        cairo_set_source_rgb (cr, OSD_COLOR);
697    #endif
698                    }
699                }
700            }
701      }      }
702  }  }
703    
704  static void  static void
705  osd_render_source_sel(osm_gps_map_osd_t *osd) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
706      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
707    
708        if(priv->source_sel.rendered && !force_rerender)
709            return;
710    
711        priv->source_sel.rendered = TRUE;
712    
713  #ifndef OSD_COLOR  #ifndef OSD_COLOR
714      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
715      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 335  osd_render_source_sel(osm_gps_map_osd_t Line 717  osd_render_source_sel(osm_gps_map_osd_t
717  #endif  #endif
718    
719      /* draw source selector */      /* draw source selector */
720      cairo_t *cr = cairo_create(priv->map_source);      cairo_t *cr = cairo_create(priv->source_sel.surface);
721      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
722      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);
723      cairo_paint(cr);      cairo_paint(cr);
# Line 354  osd_render_source_sel(osm_gps_map_osd_t Line 736  osd_render_source_sel(osm_gps_map_osd_t
736  #endif  #endif
737    
738  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
     osd_source_content(priv, cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);  
739      osd_labels_shadow(cr, Z_RAD/3, TRUE);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
740        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
741        cairo_stroke (cr);
742  #endif  #endif
     osd_source_content(priv, cr, 1, 1);  
743  #ifndef OSD_COLOR  #ifndef OSD_COLOR
744      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
745  #else  #else
746      osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
747  #endif  #endif
748        osd_source_content(osd, cr, 1);
749        cairo_stroke (cr);
750    
751      cairo_destroy(cr);      cairo_destroy(cr);
752  }  }
753    
754    /* re-allocate the buffer used to draw the menu. This is used */
755    /* to collapse/expand the buffer */
756  static void  static void
757  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
758      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
759    
760      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
761      g_assert (priv->map_source);      g_assert (priv->source_sel.surface);
     cairo_surface_destroy(priv->map_source);  
762    
763      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
764      if(priv->expanded) {      if(priv->source_sel.expanded) {
765            cairo_text_extents_t extents;
766    
767            /* determine content size */
768            cairo_t *cr = cairo_create(priv->source_sel.surface);
769            cairo_select_font_face (cr, "Sans",
770                                    CAIRO_FONT_SLANT_NORMAL,
771                                    CAIRO_FONT_WEIGHT_BOLD);
772            cairo_set_font_size (cr, OSD_FONT_SIZE);
773    
774            /* calculate menu size */
775            int i, max_h = 0, max_w = 0;
776            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
777                const char *src = osm_gps_map_source_get_friendly_name(i);
778                cairo_text_extents (cr, src, &extents);
779    
780                if(extents.width > max_w) max_w = extents.width;
781                if(extents.height > max_h) max_h = extents.height;
782            }
783            cairo_destroy(cr);
784    
785            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
786            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
787                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
788    
789          w = OSD_S_EXP_W;          w = OSD_S_EXP_W;
790          h = OSD_S_EXP_H;          h = OSD_S_EXP_H;
791      }      }
792    
793      priv->map_source =      cairo_surface_destroy(priv->source_sel.surface);
794        priv->source_sel.surface =
795          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
796    
797      osd_render_source_sel(osd);      osd_render_source_sel(osd, TRUE);
   
798  }  }
799    
800  #define OSD_HZ      15  #define OSD_HZ      15
801  #define OSD_TIME    1000  #define OSD_TIME    500
802    
803  static gboolean osd_source_animate(gpointer data) {  static gboolean osd_source_animate(gpointer data) {
804      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
805      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
806      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
807      gboolean done = FALSE;      gboolean done = FALSE;
808      priv->count += priv->dir;      priv->source_sel.count += priv->source_sel.dir;
809    
810      /* shifting in */      /* shifting in */
811      if(priv->dir < 0) {      if(priv->source_sel.dir < 0) {
812          if(priv->count <= 0) {          if(priv->source_sel.count <= 0) {
813              priv->count = 0;              priv->source_sel.count = 0;
814              done = TRUE;              done = TRUE;
815          }          }
816      } else {      } else {
817          if(priv->count >= 1000) {          if(priv->source_sel.count >= 1000) {
818              priv->expanded = FALSE;              priv->source_sel.expanded = FALSE;
819              osd_source_reallocate(osd);              osd_source_reallocate(osd);
820    
821              priv->count = 1000;              priv->source_sel.count = 1000;
822              done = TRUE;              done = TRUE;
823          }          }
824      }      }
# Line 417  static gboolean osd_source_animate(gpoin Line 826  static gboolean osd_source_animate(gpoin
826    
827      /* count runs linearly from 0 to 1000, map this nicely onto a position */      /* count runs linearly from 0 to 1000, map this nicely onto a position */
828    
829      /* simple linear mapping */      /* nice sinoid mapping */
830      //    priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +      float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
831      //        (diff * priv->count)/1000;      priv->source_sel.shift =
832            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
     /* nicer sinoid mapping */  
     float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;  
     priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +  
833          m * diff;          m * diff;
834    
835        /* make sure the screen is updated */
836      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
837    
838        /* stop animation if done */
839      if(done)      if(done)
840          priv->handler_id = 0;          priv->source_sel.handler_id = 0;
841    
842      return !done;      return !done;
843  }  }
# Line 441  osd_source_toggle(osm_gps_map_osd_t *osd Line 849  osd_source_toggle(osm_gps_map_osd_t *osd
849      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
850    
851      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
852      if(priv->handler_id)      if(priv->source_sel.handler_id)
853          return;          return;
854    
855      /* expand immediately, collapse is handle at the end of the collapse animation */      /* expand immediately, collapse is handle at the end of the */
856      if(!priv->expanded) {      /* collapse animation */
857          priv->expanded = TRUE;      if(!priv->source_sel.expanded) {
858            priv->source_sel.expanded = TRUE;
859          osd_source_reallocate(osd);          osd_source_reallocate(osd);
860    
861          priv->count = 1000;          priv->source_sel.count = 1000;
862          priv->shift = osd->widget->allocation.width - OSD_S_W;          priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
863          priv->dir = -1000/OSD_HZ;          priv->source_sel.dir = -1000/OSD_HZ;
864      } else {      } else {
865          priv->count =  0;          priv->source_sel.count =  0;
866          priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;          priv->source_sel.shift = osd->widget->allocation.width -
867          priv->dir = +1000/OSD_HZ;              OSD_S_EXP_W + OSD_S_X;
868            priv->source_sel.dir = +1000/OSD_HZ;
869      }      }
870    
871      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      /* start timer to handle animation */
872        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
873                                                      osd_source_animate, osd);
874  }  }
875    
876    /* check if the user clicked inside the source selection area */
877  static osd_button_t  static osd_button_t
878  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_source_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
879      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
880    
881      if(!priv->expanded)      if(!priv->source_sel.expanded)
882          x -= osd->widget->allocation.width - OSD_S_W;          x -= osd->widget->allocation.width - OSD_S_W;
883      else      else
884          x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;          x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
# Line 480  osd_source_check(osm_gps_map_osd_t *osd, Line 893  osd_source_check(osm_gps_map_osd_t *osd,
893          /* really within puller shape? */          /* really within puller shape? */
894          if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {          if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
895              /* expand source selector */              /* expand source selector */
896              osd_source_toggle(osd);              if(down)
897                    osd_source_toggle(osd);
898    
899              /* tell upper layers that user clicked some background element */              /* tell upper layers that user clicked some background element */
900              /* of the OSD */              /* of the OSD */
901              return OSD_BG;              return OSD_BG;
902          }          }
903      }      }
904    
905        /* check for clicks into data area */
906        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
907            /* re-adjust from puller top to content top */
908            if(OSD_S_Y < 0)
909                y += OSD_S_EXP_H - OSD_S_PH;
910    
911            if(x > OSD_S_PW &&
912               x < OSD_S_PW + OSD_S_EXP_W &&
913               y > 0 &&
914               y < OSD_S_EXP_H) {
915    
916                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
917                    / OSM_GPS_MAP_SOURCE_LAST;
918    
919                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
920                y /= step;
921                y += 1;
922    
923                if(down) {
924                    gint old = 0;
925                    g_object_get(osd->widget, "map-source", &old, NULL);
926    
927                    if(y > OSM_GPS_MAP_SOURCE_NULL &&
928                       y <= OSM_GPS_MAP_SOURCE_LAST &&
929                       old != y) {
930                        g_object_set(osd->widget, "map-source", y, NULL);
931    
932                        osd_render_source_sel(osd, TRUE);
933                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
934                    }
935                }
936    
937                /* return "clicked in OSD background" to prevent further */
938                /* processing by application */
939                return OSD_BG;
940            }
941        }
942    
943      return OSD_NONE;      return OSD_NONE;
944  }  }
945    #endif // OSD_SOURCE_SEL
946    
947  static osd_button_t  static osd_button_t
948  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
949      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
950    
951    #ifdef OSD_BALLOON
952        if(down) {
953            /* needed to handle balloons that are created at click */
954            osd_priv_t *priv = (osd_priv_t*)osd->priv;
955            priv->balloon.just_created = FALSE;
956        }
957    #endif
958    
959  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
960      /* the source selection area is handles internally */      /* the source selection area is handles internally */
961      but = osd_source_check(osd, x, y);      but = osd_source_check(osd, down, x, y);
     if(but != OSD_NONE)  
         return but;  
962  #endif  #endif
963    
964      x -= OSD_X;      if(but == OSD_NONE) {
965      y -= OSD_Y;          gint mx = x - OSD_X;
966            gint my = y - OSD_Y;
967      if(OSD_X < 0)  
968          x -= (osd->widget->allocation.width - OSD_W);          if(OSD_X < 0)
969                mx -= (osd->widget->allocation.width - OSD_W);
970      if(OSD_Y < 0)  
971          y -= (osd->widget->allocation.height - OSD_H);          if(OSD_Y < 0)
972                my -= (osd->widget->allocation.height - OSD_H);
973      /* first do a rough test for the OSD area. */  
974      /* this is just to avoid an unnecessary detailed test */          /* first do a rough test for the OSD area. */
975      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {          /* this is just to avoid an unnecessary detailed test */
976            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
977  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
978          but = osd_check_dpad(x, y);              but = osd_check_dpad(mx, my);
979  #endif  #endif
980            }
981    
982          if(but == OSD_NONE)          if(but == OSD_NONE)
983              but = osd_check_zoom(x, y);              but = osd_check_zoom(mx, my);
984      }      }
985    
986    #ifdef OSD_BALLOON
987        if(but == OSD_NONE) {
988            /* check if user clicked into balloon */
989            if(osd_balloon_check(osd, down, x, y))
990                but = OSD_BG;
991        }
992    #endif
993    
994      return but;      return but;
995  }  }
996    
# Line 594  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1064  osd_zoom_labels(cairo_t *cr, gint x, gin
1064      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1065  }  }
1066    
1067    #ifdef OSD_COORDINATES
1068    
1069    #ifndef OSD_COORDINATES_FONT_SIZE
1070    #define OSD_COORDINATES_FONT_SIZE 12
1071    #endif
1072    
1073    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1074    
1075    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1076    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1077    
1078    /* these can be overwritten with versions that support */
1079    /* localization */
1080    #ifndef OSD_COORDINATES_CHR_N
1081    #define OSD_COORDINATES_CHR_N  "N"
1082    #endif
1083    #ifndef OSD_COORDINATES_CHR_S
1084    #define OSD_COORDINATES_CHR_S  "S"
1085    #endif
1086    #ifndef OSD_COORDINATES_CHR_E
1087    #define OSD_COORDINATES_CHR_E  "E"
1088    #endif
1089    #ifndef OSD_COORDINATES_CHR_W
1090    #define OSD_COORDINATES_CHR_W  "W"
1091    #endif
1092    
1093    
1094    
1095    /* this is the classic geocaching notation */
1096    static char
1097    *osd_latitude_str(float latitude) {
1098        char *c = OSD_COORDINATES_CHR_N;
1099        float integral, fractional;
1100    
1101        if(isnan(latitude))
1102            return NULL;
1103    
1104        if(latitude < 0) {
1105            latitude = fabs(latitude);
1106            c = OSD_COORDINATES_CHR_S;
1107        }
1108    
1109        fractional = modff(latitude, &integral);
1110    
1111        return g_strdup_printf("%s %02d° %06.3f'",
1112                               c, (int)integral, fractional*60.0);
1113    }
1114    
1115    static char
1116    *osd_longitude_str(float longitude) {
1117        char *c = OSD_COORDINATES_CHR_E;
1118        float integral, fractional;
1119    
1120        if(isnan(longitude))
1121            return NULL;
1122    
1123        if(longitude < 0) {
1124            longitude = fabs(longitude);
1125            c = OSD_COORDINATES_CHR_W;
1126        }
1127    
1128        fractional = modff(longitude, &integral);
1129    
1130        return g_strdup_printf("%s %03d° %06.3f'",
1131                               c, (int)integral, fractional*60.0);
1132    }
1133    
1134    /* render a string at the given screen position */
1135    static int
1136    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1137        char *p = g_strdup(text);
1138        cairo_text_extents_t extents;
1139        cairo_text_extents (cr, p, &extents);
1140    
1141        /* check if text needs to be truncated */
1142        int len = strlen(text)-2;
1143        while(extents.width > width) {
1144            len--;
1145            strcpy(p+len, "...");
1146            cairo_text_extents (cr, p, &extents);
1147        }
1148    
1149        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1150        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1151        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1152        cairo_text_path (cr, p);
1153        cairo_stroke (cr);
1154    
1155        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1156        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1157        cairo_show_text (cr, p);
1158    
1159        g_free(p);
1160    
1161        /* skip + 1/4 line */
1162        return y + 5*OSD_COORDINATES_FONT_SIZE/4;
1163    }
1164    
1165    static void
1166    osd_render_coordinates(osm_gps_map_osd_t *osd)
1167    {
1168        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1169    
1170        /* get current map position */
1171        gfloat lat, lon;
1172        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1173    
1174        /* check if position has changed enough to require redraw */
1175        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1176            /* 1/60000 == 1/1000 minute */
1177            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1178               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1179                return;
1180    
1181        priv->coordinates.lat = lat;
1182        priv->coordinates.lon = lon;
1183    
1184        /* first fill with transparency */
1185        cairo_t *cr = cairo_create(priv->coordinates.surface);
1186        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1187        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1188        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1189        cairo_paint(cr);
1190        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1191    
1192        cairo_select_font_face (cr, "Sans",
1193                                CAIRO_FONT_SLANT_NORMAL,
1194                                CAIRO_FONT_WEIGHT_BOLD);
1195        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1196    
1197        char *latitude = osd_latitude_str(lat);
1198        char *longitude = osd_longitude_str(lon);
1199    
1200        int y = OSD_COORDINATES_OFFSET;
1201        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1202        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1203    
1204        g_free(latitude);
1205        g_free(longitude);
1206    
1207        cairo_destroy(cr);
1208    }
1209    #endif  // OSD_COORDINATES
1210    
1211    #ifdef OSD_NAV
1212    #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1213    #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1214    
1215    /* http://mathforum.org/library/drmath/view/55417.html */
1216    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1217      return atan2( sin(lon2 - lon1) * cos(lat2),
1218                    cos(lat1) * sin(lat2) -
1219                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1220    }
1221    
1222    /* http://mathforum.org/library/drmath/view/51722.html */
1223    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1224      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1225                       sin(lat1) * sin(lat2));
1226    
1227      //  return(aob * 3959.0);   /* great circle radius in miles */
1228    
1229      return(aob * 6371000.0);     /* great circle radius in meters */
1230    }
1231    
1232    static void
1233    osd_render_nav(osm_gps_map_osd_t *osd)
1234    {
1235        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1236    
1237        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1238            return;
1239    
1240        /* first fill with transparency */
1241        cairo_t *cr = cairo_create(priv->nav.surface);
1242        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1243        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1244        cairo_paint(cr);
1245        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1246    
1247        cairo_select_font_face (cr, "Sans",
1248                                CAIRO_FONT_SLANT_NORMAL,
1249                                CAIRO_FONT_WEIGHT_BOLD);
1250        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1251    
1252        char *latitude = osd_latitude_str(priv->nav.lat);
1253        char *longitude = osd_longitude_str(priv->nav.lon);
1254    
1255        int y = OSD_COORDINATES_OFFSET;
1256        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1257        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1258        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1259    
1260        g_free(latitude);
1261        g_free(longitude);
1262    
1263        /* draw the compass */
1264        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1265        if(radius > OSD_NAV_W/2)
1266            radius = OSD_NAV_W/2;
1267    
1268        int x = OSD_NAV_W/2+1;
1269        y += radius;
1270    
1271        cairo_stroke (cr);
1272    
1273        /* draw background */
1274        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1275        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1276        cairo_fill_preserve (cr);
1277        cairo_set_source_rgb (cr, 0, 0, 0);
1278        cairo_set_line_width (cr, 1);
1279        cairo_stroke (cr);
1280    
1281        /* draw pointer */
1282    #define ARROW_WIDTH     0.3
1283    #define ARROW_LENGTH    0.7
1284    
1285        coord_t *gps = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1286        if(gps) {
1287            float arot = get_bearing(gps->rlat, gps->rlon,
1288                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1289    
1290            cairo_move_to(cr,
1291                          x + radius *  ARROW_LENGTH *  sin(arot),
1292                          y + radius *  ARROW_LENGTH * -cos(arot));
1293    
1294            cairo_line_to(cr,
1295                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1296                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1297    
1298            cairo_line_to(cr,
1299                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1300                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1301    
1302            cairo_line_to(cr,
1303                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1304                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1305    
1306            cairo_close_path(cr);
1307            cairo_set_source_rgb (cr, 0, 0, 0);
1308            cairo_fill (cr);
1309    
1310            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1311    
1312            float dist = get_distance(gps->rlat, gps->rlon,
1313                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1314    
1315            char *dist_str = NULL;
1316            if(!priv->nav.imperial) {
1317                /* metric is easy ... */
1318                if(dist<1000)
1319                    dist_str = g_strdup_printf("%u m", (int)dist);
1320                else
1321                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1322            } else {
1323                /* and now the hard part: scale for useful imperial values :-( */
1324                /* try to convert to feet, 1ft == 0.3048 m */
1325    
1326                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1327                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1328                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1329                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1330                else
1331                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1332            }
1333    
1334            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1335            g_free(dist_str);
1336        }
1337    
1338        cairo_destroy(cr);
1339    }
1340    
1341    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1342        g_return_if_fail (OSM_IS_GPS_MAP (map));
1343    
1344        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1345        g_return_if_fail (osd);
1346    
1347        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1348        g_return_if_fail (priv);
1349    
1350        if(priv->nav.surface) {
1351            cairo_surface_destroy(priv->nav.surface);
1352            priv->nav.surface = NULL;
1353            priv->nav.lat = OSM_GPS_MAP_INVALID;
1354            priv->nav.lon = OSM_GPS_MAP_INVALID;
1355            if(priv->nav.name) g_free(priv->nav.name);
1356        }
1357        osm_gps_map_redraw(map);
1358    }
1359    
1360    void
1361    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1362                              float latitude, float longitude, char *name) {
1363        g_return_if_fail (OSM_IS_GPS_MAP (map));
1364    
1365        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1366        g_return_if_fail (osd);
1367    
1368        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1369        g_return_if_fail (priv);
1370    
1371        osm_gps_map_osd_clear_nav (map);
1372    
1373        /* allocate balloon surface */
1374        priv->nav.surface =
1375            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1376                                       OSD_NAV_W+2, OSD_NAV_H+2);
1377    
1378        priv->nav.lat = latitude;
1379        priv->nav.lon = longitude;
1380        priv->nav.name = g_strdup(name);
1381        priv->nav.imperial = imperial;
1382    
1383        osd_render_nav(osd);
1384    
1385        osm_gps_map_redraw(map);
1386    }
1387    
1388    #endif // OSD_NAV
1389    
1390    
1391    #ifdef OSD_CROSSHAIR
1392    
1393    #ifndef OSD_CROSSHAIR_RADIUS
1394    #define OSD_CROSSHAIR_RADIUS 10
1395    #endif
1396    
1397    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1398    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1399    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1400    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1401    
1402    static void
1403    osd_render_crosshair_shape(cairo_t *cr) {
1404        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1405                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1406    
1407        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1408                       OSD_CROSSHAIR_H/2);
1409        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1410        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1411                       OSD_CROSSHAIR_H/2);
1412        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1413    
1414        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1415                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1416        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1417        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1418                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1419        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1420    
1421        cairo_stroke (cr);
1422    }
1423    
1424    static void
1425    osd_render_crosshair(osm_gps_map_osd_t *osd)
1426    {
1427        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1428    
1429        if(priv->crosshair.rendered)
1430            return;
1431    
1432        priv->crosshair.rendered = TRUE;
1433    
1434        /* first fill with transparency */
1435        cairo_t *cr = cairo_create(priv->crosshair.surface);
1436        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1437        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1438        cairo_paint(cr);
1439        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1440    
1441        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1442    
1443        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1444        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1445        osd_render_crosshair_shape(cr);
1446    
1447        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1448        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1449        osd_render_crosshair_shape(cr);
1450    
1451        cairo_destroy(cr);
1452    }
1453    #endif
1454    
1455    #ifdef OSD_SCALE
1456    
1457    #ifndef OSD_SCALE_FONT_SIZE
1458    #define OSD_SCALE_FONT_SIZE 12
1459    #endif
1460    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1461    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1462    
1463    /* various parameters used to create the scale */
1464    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1465    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1466    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1467    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1468    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1469    
1470    static void
1471    osd_render_scale(osm_gps_map_osd_t *osd)
1472    {
1473        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1474    
1475        /* this only needs to be rendered if the zoom has changed */
1476        gint zoom;
1477        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1478        if(zoom == priv->scale.zoom)
1479            return;
1480    
1481        priv->scale.zoom = zoom;
1482    
1483        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1484    
1485        /* first fill with transparency */
1486        cairo_t *cr = cairo_create(priv->scale.surface);
1487        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1488        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1489        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1490        cairo_paint(cr);
1491        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1492    
1493        /* determine the size of the scale width in meters */
1494        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1495    
1496        /* scale this to useful values */
1497        int exp = logf(width)*M_LOG10E;
1498        int mant = width/pow(10,exp);
1499        int width_metric = mant * pow(10,exp);
1500        char *dist_str = NULL;
1501        if(width_metric<1000)
1502            dist_str = g_strdup_printf("%u m", width_metric);
1503        else
1504            dist_str = g_strdup_printf("%u km", width_metric/1000);
1505        width_metric /= m_per_pix;
1506    
1507        /* and now the hard part: scale for useful imperial values :-( */
1508        /* try to convert to feet, 1ft == 0.3048 m */
1509        width /= 0.3048;
1510        float imp_scale = 0.3048;
1511        char *dist_imp_unit = "ft";
1512    
1513        if(width >= 100) {
1514            /* 1yd == 3 feet */
1515            width /= 3.0;
1516            imp_scale *= 3.0;
1517            dist_imp_unit = "yd";
1518    
1519            if(width >= 1760.0) {
1520                /* 1mi == 1760 yd */
1521                width /= 1760.0;
1522                imp_scale *= 1760.0;
1523                dist_imp_unit = "mi";
1524            }
1525        }
1526    
1527        /* also convert this to full tens/hundreds */
1528        exp = logf(width)*M_LOG10E;
1529        mant = width/pow(10,exp);
1530        int width_imp = mant * pow(10,exp);
1531        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1532    
1533        /* convert back to pixels */
1534        width_imp *= imp_scale;
1535        width_imp /= m_per_pix;
1536    
1537        cairo_select_font_face (cr, "Sans",
1538                                CAIRO_FONT_SLANT_NORMAL,
1539                                CAIRO_FONT_WEIGHT_BOLD);
1540        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1541        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1542    
1543        cairo_text_extents_t extents;
1544        cairo_text_extents (cr, dist_str, &extents);
1545    
1546        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1547        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1548        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1549        cairo_text_path (cr, dist_str);
1550        cairo_stroke (cr);
1551        cairo_move_to (cr, 2*OSD_SCALE_FD,
1552                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1553        cairo_text_path (cr, dist_str_imp);
1554        cairo_stroke (cr);
1555    
1556        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1557        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1558        cairo_show_text (cr, dist_str);
1559        cairo_move_to (cr, 2*OSD_SCALE_FD,
1560                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1561        cairo_show_text (cr, dist_str_imp);
1562    
1563        g_free(dist_str);
1564        g_free(dist_str_imp);
1565    
1566        /* draw white line */
1567        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1568        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1569        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1570        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1571        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1572        cairo_rel_line_to (cr, width_metric, 0);
1573        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1574        cairo_stroke(cr);
1575        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1576        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1577        cairo_rel_line_to (cr, width_imp, 0);
1578        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1579        cairo_stroke(cr);
1580    
1581        /* draw black line */
1582        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1583        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1584        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1585        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1586        cairo_rel_line_to (cr, width_metric, 0);
1587        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1588        cairo_stroke(cr);
1589        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1590        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1591        cairo_rel_line_to (cr, width_imp, 0);
1592        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1593        cairo_stroke(cr);
1594    
1595        cairo_destroy(cr);
1596    }
1597    #endif
1598    
1599  static void  static void
1600  osd_render(osm_gps_map_osd_t *osd) {  osd_render_controls(osm_gps_map_osd_t *osd)
1601    {
1602      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1603    
1604        if(priv->controls.rendered
1605    #ifdef OSD_GPS_BUTTON
1606           && (priv->controls.gps_enabled == (osd->cb != NULL))
1607    #endif
1608           )
1609            return;
1610    
1611    #ifdef OSD_GPS_BUTTON
1612        priv->controls.gps_enabled = (osd->cb != NULL);
1613    #endif
1614        priv->controls.rendered = TRUE;
1615    
1616  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1617      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1618      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 605  osd_render(osm_gps_map_osd_t *osd) { Line 1620  osd_render(osm_gps_map_osd_t *osd) {
1620  #endif  #endif
1621    
1622      /* first fill with transparency */      /* first fill with transparency */
1623      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1624      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1625      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);
1626      cairo_paint(cr);      cairo_paint(cr);
# Line 641  osd_render(osm_gps_map_osd_t *osd) { Line 1656  osd_render(osm_gps_map_osd_t *osd) {
1656      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1657    
1658  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1659        osd_labels_shadow(cr, Z_RAD/3, TRUE);
1660      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1661  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1662      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1663  #endif  #endif
1664      osd_labels_shadow(cr, Z_RAD/3, TRUE);      cairo_stroke(cr);
1665  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
     osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);  
1666      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1667        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1668        cairo_stroke(cr);
1669  #endif  #endif
1670  #endif  #endif
1671    
     osd_zoom_labels(cr, 1, 1);  
 #ifndef OSD_NO_DPAD  
     osd_dpad_labels(cr, 1, 1);  
 #endif  
1672  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1673      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1674  #else  #else
1675      osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1676  #endif  #endif
1677  #ifdef OSD_GPS_BUTTON      osd_zoom_labels(cr, 1, 1);
1678      osd_dpad_gps(cr, 1, 1);  #ifndef OSD_NO_DPAD
1679        osd_dpad_labels(cr, 1, 1);
1680    #endif
1681        cairo_stroke(cr);
1682    
1683  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1684      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1685  #else  #else
1686      osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1687  #endif  #endif
1688    #ifdef OSD_GPS_BUTTON
1689        osd_dpad_gps(cr, 1, 1);
1690  #endif  #endif
1691        cairo_stroke(cr);
1692    
1693      cairo_destroy(cr);      cairo_destroy(cr);
1694    }
1695    
1696      osd_render_source_sel(osd);  static void
1697    osd_render(osm_gps_map_osd_t *osd)
1698    {
1699        /* this function is actually called pretty often since the */
1700        /* OSD contents may have changed (due to a coordinate/zoom change). */
1701        /* The different OSD parts have to make sure that they don't */
1702        /* render unneccessarily often and thus waste CPU power */
1703    
1704        osd_render_controls(osd);
1705    
1706    #ifdef OSD_SOURCE_SEL
1707        osd_render_source_sel(osd, FALSE);
1708    #endif
1709    
1710    #ifdef OSD_SCALE
1711        osd_render_scale(osd);
1712    #endif
1713    
1714    #ifdef OSD_CROSSHAIR
1715        osd_render_crosshair(osd);
1716    #endif
1717    
1718    #ifdef OSD_NAV
1719        osd_render_nav(osd);
1720    #endif
1721    
1722    #ifdef OSD_COORDINATES
1723        osd_render_coordinates(osd);
1724    #endif
1725  }  }
1726    
1727  static void  static void
# Line 682  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1731  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1731    
1732      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1733      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1734      if(!priv->overlay) {      if(!priv->controls.surface) {
1735          /* create overlay ... */          /* create overlay ... */
1736          priv->overlay =          priv->controls.surface =
1737              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1738    
1739            priv->controls.rendered = FALSE;
1740    #ifdef OSD_GPS_BUTTON
1741            priv->controls.gps_enabled = FALSE;
1742    #endif
1743    
1744    #ifdef OSD_SOURCE_SEL
1745          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
1746          priv->map_source =          priv->source_sel.surface =
1747              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1748                                             OSD_S_W+2, OSD_S_H+2);                                             OSD_S_W+2, OSD_S_H+2);
1749            priv->source_sel.rendered = FALSE;
1750    #endif
1751    
1752    #ifdef OSD_SCALE
1753            priv->scale.surface =
1754                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1755                                           OSD_SCALE_W, OSD_SCALE_H);
1756            priv->scale.zoom = -1;
1757    #endif
1758    
1759    #ifdef OSD_CROSSHAIR
1760            priv->crosshair.surface =
1761                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1762                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1763            priv->crosshair.rendered = FALSE;
1764    #endif
1765    
1766    #ifdef OSD_COORDINATES
1767            priv->coordinates.surface =
1768                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1769                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1770    
1771            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1772    #endif
1773    
1774          /* ... and render it */          /* ... and render it */
1775          osd_render(osd);          osd_render(osd);
# Line 699  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1778  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1778      // now draw this onto the original context      // now draw this onto the original context
1779      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1780    
1781      int x = OSD_X, y = OSD_Y;      gint x, y;
1782      if(OSD_X < 0)  
1783          x = osd->widget->allocation.width - OSD_W + OSD_X;  #ifdef OSD_SCALE
1784        x =  OSD_X;
1785        y = -OSD_Y;
1786        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1787        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1788    
1789        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1790        cairo_paint(cr);
1791    #endif
1792    
1793    #ifdef OSD_CROSSHAIR
1794        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1795        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1796    
1797        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1798        cairo_paint(cr);
1799    #endif
1800    
1801    #ifdef OSD_NAV
1802        if(priv->nav.surface) {
1803            x =  OSD_X;
1804            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1805            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1806    
1807            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1808            cairo_paint(cr);
1809        }
1810    #endif
1811    
1812      if(OSD_Y < 0)  #ifdef OSD_COORDINATES
1813          y = osd->widget->allocation.height - OSD_H + OSD_Y;      x = -OSD_X;
1814        y = -OSD_Y;
1815        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1816        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1817    
1818      cairo_set_source_surface(cr, priv->overlay, x, y);      cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1819        cairo_paint(cr);
1820    #endif
1821    
1822    #ifdef OSD_BALLOON
1823        if(priv->balloon.surface) {
1824    
1825            /* convert given lat lon into screen coordinates */
1826            gint x, y;
1827            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1828                                          priv->balloon.lat, priv->balloon.lon,
1829                                          &x, &y);
1830    
1831            /* check if balloon needs to be rerendered */
1832            osd_render_balloon(osd);
1833    
1834            cairo_set_source_surface(cr, priv->balloon.surface,
1835                                     x + priv->balloon.offset_x,
1836                                     y + priv->balloon.offset_y);
1837            cairo_paint(cr);
1838        }
1839    #endif
1840    
1841        x = OSD_X;
1842        if(x < 0)
1843            x += osd->widget->allocation.width - OSD_W;
1844    
1845        y = OSD_Y;
1846        if(y < 0)
1847            y += osd->widget->allocation.height - OSD_H;
1848    
1849        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1850      cairo_paint(cr);      cairo_paint(cr);
1851    
1852  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1853      if(!priv->handler_id) {      if(!priv->source_sel.handler_id) {
1854          /* the OSD source selection is not being animated */          /* the OSD source selection is not being animated */
1855          if(!priv->expanded)          if(!priv->source_sel.expanded)
1856              x = osd->widget->allocation.width - OSD_S_W;              x = osd->widget->allocation.width - OSD_S_W;
1857          else          else
1858              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1859      } else      } else
1860          x = priv->shift;          x = priv->source_sel.shift;
1861    
1862      y = OSD_S_Y;      y = OSD_S_Y;
1863      if(OSD_S_Y < 0) {      if(OSD_S_Y < 0) {
1864          if(!priv->expanded)          if(!priv->source_sel.expanded)
1865              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1866          else          else
1867              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1868      }      }
1869    
1870      cairo_set_source_surface(cr, priv->map_source, x, y);      cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1871      cairo_paint(cr);      cairo_paint(cr);
1872  #endif  #endif
1873    
# Line 739  osd_free(osm_gps_map_osd_t *osd) Line 1879  osd_free(osm_gps_map_osd_t *osd)
1879  {  {
1880      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1881    
1882      if(priv->handler_id)      if (priv->controls.surface)
1883          gtk_timeout_remove(priv->handler_id);           cairo_surface_destroy(priv->controls.surface);
1884    
1885      if (priv->overlay)  #ifdef OSD_SOURCE_SEL
1886           cairo_surface_destroy(priv->overlay);      if(priv->source_sel.handler_id)
1887            gtk_timeout_remove(priv->source_sel.handler_id);
1888    
1889      if (priv->map_source)      if (priv->source_sel.surface)
1890           cairo_surface_destroy(priv->map_source);           cairo_surface_destroy(priv->source_sel.surface);
1891    #endif
1892    
1893    #ifdef OSD_SCALE
1894        if (priv->scale.surface)
1895             cairo_surface_destroy(priv->scale.surface);
1896    #endif
1897    
1898    #ifdef OSD_CROSSHAIR
1899        if (priv->crosshair.surface)
1900             cairo_surface_destroy(priv->crosshair.surface);
1901    #endif
1902    
1903    #ifdef OSD_NAV
1904        if (priv->nav.surface)
1905             cairo_surface_destroy(priv->nav.surface);
1906    #endif
1907    
1908    #ifdef OSD_COORDINATES
1909        if (priv->coordinates.surface)
1910             cairo_surface_destroy(priv->coordinates.surface);
1911    #endif
1912    
1913    #ifdef OSD_BALLOON
1914        if (priv->balloon.surface)
1915             cairo_surface_destroy(priv->balloon.surface);
1916    #endif
1917    
1918      g_free(priv);      g_free(priv);
1919  }  }
1920    
1921    static gboolean
1922    osd_busy(osm_gps_map_osd_t *osd)
1923    {
1924    #ifdef OSD_SOURCE_SEL
1925        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1926        return (priv->source_sel.handler_id != 0);
1927    #else
1928        return FALSE;
1929    #endif
1930    }
1931    
1932  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1933        .widget     = NULL,
1934    
1935      .draw       = osd_draw,      .draw       = osd_draw,
1936      .check      = osd_check,      .check      = osd_check,
1937      .render     = osd_render,      .render     = osd_render,
1938      .free       = osd_free,      .free       = osd_free,
1939        .busy       = osd_busy,
1940    
1941      .cb         = NULL,      .cb         = NULL,
1942      .data       = NULL,      .data       = NULL,
# Line 769  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1950  osm_gps_map_osd_classic_init(OsmGpsMap *
1950  {  {
1951      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);
1952    
1953    #ifdef OSD_BALLOON
1954        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1955        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1956    #endif
1957    
1958      osd_classic.priv = priv;      osd_classic.priv = priv;
1959    
1960      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
# Line 798  osm_gps_map_osd_check(OsmGpsMap *map, gi Line 1984  osm_gps_map_osd_check(OsmGpsMap *map, gi
1984      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1985      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
1986    
1987      return osd_check(osd, x, y);      return osd_check(osd, TRUE, x, y);
1988  }  }
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  Added in v.133