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

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revision 103 by harbaum, Wed Sep 9 11:50:50 2009 UTC revision 228 by harbaum, Thu Dec 3 20:07:13 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 <string.h>
23  #include <math.h>    // M_PI/cos()  #include <math.h>    // M_PI/cos()
24    
25  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
26  /* OSD_DIAMETER */  /* OSD_DIAMETER */
27  /* OSD_X, OSD_Y */  /* OSD_X, OSD_Y */
28    
 #ifndef OSD_SCALE_FONT_SIZE  
 #define OSD_SCALE_FONT_SIZE 12  
 #endif  
 #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)  
 #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)  
   
29  #ifndef USE_CAIRO  #ifndef USE_CAIRO
30  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
31  #endif  #endif
# Line 38  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  #ifdef OSD_SCALE
67      cairo_surface_t *scale;      struct {
68      int scale_zoom;          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, mode;    // display distance imperial/metric
86            int click_sep;
87        } nav;
88    #endif
89    
90    #ifdef OSD_COORDINATES
91        struct {
92            cairo_surface_t *surface;
93            float lat, lon;
94        } coordinates;
95  #endif  #endif
96    
97  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
98      /* values to handle the "source" menu */      struct {
99      cairo_surface_t *map_source;          /* values to handle the "source" menu */
100      gboolean expanded;          cairo_surface_t *surface;
101      gint shift, dir, count;          gboolean expanded;
102      gint handler_id;          gint shift, dir, count;
103      gint width, height;          gint handler_id;
104            gint width, height;
105            gboolean rendered;
106        } source_sel;
107  #endif  #endif
108    
109  } osd_priv_t;  } osd_priv_t;
110    
111    #ifdef OSD_BALLOON
112    /* most visual effects are hardcoded by now, but may be made */
113    /* available via properties later */
114    #ifndef BALLOON_AREA_WIDTH
115    #define BALLOON_AREA_WIDTH           290
116    #endif
117    #ifndef BALLOON_AREA_HEIGHT
118    #define BALLOON_AREA_HEIGHT           75
119    #endif
120    #ifndef BALLOON_CORNER_RADIUS
121    #define BALLOON_CORNER_RADIUS         10
122    #endif
123    
124    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
125    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
126    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
127    #define BALLOON_TRANSPARENCY         0.8
128    #define POINTER_HEIGHT                20
129    #define POINTER_FOOT_WIDTH            20
130    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
131    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
132    #define BALLOON_SHADOW_TRANSPARENCY  0.2
133    
134    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
135    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
136    
137    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
138    
139    #if 0
140    #define FIN   printf("entering function %s\n", __func__);
141    #define FOUT  printf("leaving function %s\n", __func__);
142    #else
143    #define FIN   ;
144    #define FOUT  ;
145    #endif
146    
147    /* draw the bubble shape. this is used twice, once for the shape and once */
148    /* for the shadow */
149    static void
150    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
151           gboolean bottom, int px, int py, int px0, int px1) {
152    
153        FIN;
154    
155        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
156        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
157                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
158        if(!bottom) {
159            /* insert top pointer */
160            cairo_line_to (cr, px1, y0);
161            cairo_line_to (cr, px, py);
162            cairo_line_to (cr, px0, y0);
163        }
164    
165        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
166        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
167                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
168        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
169        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
170                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
171        if(bottom) {
172            /* insert bottom pointer */
173            cairo_line_to (cr, px0, y1);
174            cairo_line_to (cr, px, py);
175            cairo_line_to (cr, px1, y1);
176        }
177    
178        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
179        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
180                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
181    
182        cairo_close_path (cr);
183    
184        FOUT;
185    }
186    
187    static void
188    osd_render_balloon(osm_gps_map_osd_t *osd) {
189        FIN;
190    
191        osd_priv_t *priv = (osd_priv_t*)osd->priv;
192    
193        if(!priv->balloon.surface)
194            return;
195    
196        /* get zoom */
197        gint zoom;
198        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
199    
200        /* ------- convert given coordinate into screen position --------- */
201        gint xs, ys;
202        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
203                                          priv->balloon.lat, priv->balloon.lon,
204                                          &xs, &ys);
205    
206        gint x0 = 1, y0 = 1;
207    
208        /* check position of this relative to screen center to determine */
209        /* pointer direction ... */
210        int pointer_x, pointer_x0, pointer_x1;
211        int pointer_y;
212    
213        /* ... and calculate position */
214        int orientation = 0;
215        if(xs > osd->widget->allocation.width/2) {
216            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
217            pointer_x = x0 - priv->balloon.offset_x;
218            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
219            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
220            orientation |= 1;
221        } else {
222            priv->balloon.offset_x = -POINTER_OFFSET;
223            pointer_x = x0 - priv->balloon.offset_x;
224            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
225            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
226        }
227    
228        gboolean bottom = FALSE;
229        if(ys > osd->widget->allocation.height/2) {
230            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
231            pointer_y = y0 - priv->balloon.offset_y;
232            bottom = TRUE;
233            orientation |= 2;
234        } else {
235            priv->balloon.offset_y = 0;
236            pointer_y = y0 - priv->balloon.offset_y;
237            y0 += POINTER_HEIGHT;
238        }
239    
240        /* if required orientation equals current one, then don't render */
241        /* anything */
242        if(orientation == priv->balloon.orientation)
243            return;
244    
245        priv->balloon.orientation = orientation;
246    
247        /* calculate bottom/right of box */
248        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
249    
250        /* save balloon screen coordinates for later use */
251        priv->balloon.rect.x = x0 + BALLOON_BORDER;
252        priv->balloon.rect.y = y0 + BALLOON_BORDER;
253        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
254        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
255    
256        g_assert(priv->balloon.surface);
257        cairo_t *cr = cairo_create(priv->balloon.surface);
258        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
259        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
260        cairo_paint(cr);
261        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
262    
263        /* --------- draw shadow --------------- */
264        osm_gps_map_draw_balloon_shape (cr,
265                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
266                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
267                     bottom, pointer_x, pointer_y,
268                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
269    
270        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
271        cairo_fill_preserve (cr);
272        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
273        cairo_set_line_width (cr, 0);
274        cairo_stroke (cr);
275    
276        /* --------- draw main shape ----------- */
277        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
278                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
279    
280        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
281        cairo_fill_preserve (cr);
282        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
283        cairo_set_line_width (cr, 1);
284        cairo_stroke (cr);
285    
286        if (priv->balloon.cb) {
287            osm_gps_map_balloon_event_t event;
288    
289            /* clip in case application tries to draw in */
290                /* exceed of the balloon */
291            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
292                             priv->balloon.rect.w, priv->balloon.rect.h);
293            cairo_clip (cr);
294            cairo_new_path (cr);  /* current path is not consumed by cairo_clip */
295    
296            /* request the application to draw the balloon contents */
297            event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_DRAW;
298            event.data.draw.rect = &priv->balloon.rect;
299            event.data.draw.cr = cr;
300    
301            priv->balloon.cb(&event, priv->balloon.data);
302        }
303    
304        cairo_destroy(cr);
305    
306        FOUT;
307    }
308    
309    /* return true if balloon is being displayed and if */
310    /* the given coordinate is within this balloon */
311    static gboolean
312    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y)
313    {
314        FIN;
315    
316        osd_priv_t *priv = (osd_priv_t*)osd->priv;
317    
318        if(!priv->balloon.surface)
319            return FALSE;
320    
321        gint xs, ys;
322        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
323                                          priv->balloon.lat, priv->balloon.lon,
324                                          &xs, &ys);
325    
326        xs += priv->balloon.rect.x + priv->balloon.offset_x;
327        ys += priv->balloon.rect.y + priv->balloon.offset_y;
328    
329        gboolean is_in =
330            (x > xs) && (x < xs + priv->balloon.rect.w) &&
331            (y > ys) && (y < ys + priv->balloon.rect.h);
332    
333        /* is this a real click or is the application just checking for something? */
334        if(click) {
335    
336            /* handle the fact that the balloon may have been created by the */
337            /* button down event */
338            if(!is_in && !down && !priv->balloon.just_created) {
339                /* the user actually clicked outside the balloon */
340    
341                /* close the balloon! */
342                osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
343    
344                /* and inform application about this */
345                if(priv->balloon.cb) {
346                    osm_gps_map_balloon_event_t event;
347                    event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_REMOVED;
348                    priv->balloon.cb(&event, priv->balloon.data);
349                }
350    
351            }
352    
353            if(is_in && priv->balloon.cb) {
354                osm_gps_map_balloon_event_t event;
355    
356                /* notify application of click */
357                event.type = OSM_GPS_MAP_BALLOON_EVENT_TYPE_CLICK;
358                event.data.click.x = x - xs;
359                event.data.click.y = y - ys;
360                event.data.click.down = down;
361    
362                priv->balloon.cb(&event, priv->balloon.data);
363            }
364        }
365        FOUT;
366        return is_in;
367    }
368    
369    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
370        FIN;
371    
372        g_return_if_fail (OSM_IS_GPS_MAP (map));
373    
374        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
375        g_return_if_fail (osd);
376    
377        osd_priv_t *priv = (osd_priv_t*)osd->priv;
378        g_return_if_fail (priv);
379    
380        if(priv->balloon.surface) {
381            cairo_surface_destroy(priv->balloon.surface);
382            priv->balloon.surface = NULL;
383            priv->balloon.lat = OSM_GPS_MAP_INVALID;
384            priv->balloon.lon = OSM_GPS_MAP_INVALID;
385        }
386        osm_gps_map_redraw(map);
387        FOUT;
388    }
389    
390    void
391    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
392                                  OsmGpsMapBalloonCallback cb, gpointer data) {
393        FIN;
394        g_return_if_fail (OSM_IS_GPS_MAP (map));
395    
396        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
397        g_return_if_fail (osd);
398    
399        osd_priv_t *priv = (osd_priv_t*)osd->priv;
400        g_return_if_fail (priv);
401    
402        osm_gps_map_osd_clear_balloon (map);
403    
404        /* allocate balloon surface */
405        priv->balloon.surface =
406            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
407                                       BALLOON_W+2, BALLOON_H+2);
408    
409        priv->balloon.lat = latitude;
410        priv->balloon.lon = longitude;
411        priv->balloon.cb = cb;
412        priv->balloon.data = data;
413        priv->balloon.just_created = TRUE;
414    
415        priv->balloon.orientation = -1;
416    
417        osd_render_balloon(osd);
418    
419        osm_gps_map_redraw(map);
420        FOUT;
421    }
422    
423    #endif // OSD_BALLOON
424    
425  /* position and extent of bounding box */  /* position and extent of bounding box */
426  #ifndef OSD_X  #ifndef OSD_X
427  #define OSD_X      (10)  #define OSD_X      (10)
# Line 201  osd_shape(cairo_t *cr) { Line 562  osd_shape(cairo_t *cr) {
562  static gboolean  static gboolean
563  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)
564  {  {
565        FIN;
566      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
567  }  }
568    
# Line 283  osd_check_zoom(gint x, gint y) { Line 645  osd_check_zoom(gint x, gint y) {
645  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
646    
647  /* size of usable area when expanded */  /* size of usable area when expanded */
648  #define OSD_S_AREA_W (priv->width)  #define OSD_S_AREA_W (priv->source_sel.width)
649  #define OSD_S_AREA_H (priv->height)  #define OSD_S_AREA_H (priv->source_sel.height)
650  #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)
651  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
652    
653  /* internal value to draw the arrow on the "puller" */  /* internal value to draw the arrow on the "puller" */
654  #define OSD_S_D0  (OSD_S_RAD/2)  #define OSD_S_D0  (OSD_S_RAD/2)
655  #ifndef OSD_FONT_SIZE  #ifndef OSD_FONT_SIZE
656  #define OSD_FONT_SIZE 16.0  #define OSD_FONT_SIZE (16.0)
657  #endif  #endif
658  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
659  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
# Line 300  osd_check_zoom(gint x, gint y) { Line 662  osd_check_zoom(gint x, gint y) {
662  /* or the entire menu incl. the puller (expanded) */  /* or the entire menu incl. the puller (expanded) */
663  static void  static void
664  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) {
665      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
666          /* just draw the puller */          /* just draw the puller */
667          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
668          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 328  osd_source_content(osm_gps_map_osd_t *os Line 690  osd_source_content(osm_gps_map_osd_t *os
690    
691      int py = offset + OSD_S_RAD - OSD_S_D0;      int py = offset + OSD_S_RAD - OSD_S_D0;
692    
693      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
694          /* draw the "puller" open (<) arrow */          /* draw the "puller" open (<) arrow */
695          cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);          cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
696          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
# Line 353  osd_source_content(osm_gps_map_osd_t *os Line 715  osd_source_content(osm_gps_map_osd_t *os
715                                      CAIRO_FONT_WEIGHT_BOLD);                                      CAIRO_FONT_WEIGHT_BOLD);
716              cairo_set_font_size (cr, OSD_FONT_SIZE);              cairo_set_font_size (cr, OSD_FONT_SIZE);
717    
718              int i, step = (priv->height - 2*OSD_TEXT_BORDER) /              int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
719                  OSM_GPS_MAP_SOURCE_LAST;                  OSM_GPS_MAP_SOURCE_LAST;
720              for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {              for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
721                  cairo_text_extents_t extents;                  cairo_text_extents_t extents;
# Line 367  osd_source_content(osm_gps_map_osd_t *os Line 729  osd_source_content(osm_gps_map_osd_t *os
729                  if(source == i) {                  if(source == i) {
730                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
731                                      y - OSD_TEXT_SKIP,                                      y - OSD_TEXT_SKIP,
732                                      priv->width - OSD_TEXT_BORDER,                                      priv->source_sel.width - OSD_TEXT_BORDER,
733                                      step + OSD_TEXT_SKIP);                                      step + OSD_TEXT_SKIP);
734                      cairo_fill(cr);                      cairo_fill(cr);
735    
# Line 398  osd_source_content(osm_gps_map_osd_t *os Line 760  osd_source_content(osm_gps_map_osd_t *os
760  }  }
761    
762  static void  static void
763  osd_render_source_sel(osm_gps_map_osd_t *osd) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
764        FIN;
765    
766      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
767    
768        if(!priv->source_sel.surface ||
769           (priv->source_sel.rendered && !force_rerender))
770            return;
771    
772        priv->source_sel.rendered = TRUE;
773    
774  #ifndef OSD_COLOR  #ifndef OSD_COLOR
775      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
776      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 408  osd_render_source_sel(osm_gps_map_osd_t Line 778  osd_render_source_sel(osm_gps_map_osd_t
778  #endif  #endif
779    
780      /* draw source selector */      /* draw source selector */
781      cairo_t *cr = cairo_create(priv->map_source);      g_assert(priv->source_sel.surface);
782        cairo_t *cr = cairo_create(priv->source_sel.surface);
783      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
784      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);
785      cairo_paint(cr);      cairo_paint(cr);
# Line 440  osd_render_source_sel(osm_gps_map_osd_t Line 811  osd_render_source_sel(osm_gps_map_osd_t
811      cairo_stroke (cr);      cairo_stroke (cr);
812    
813      cairo_destroy(cr);      cairo_destroy(cr);
814        FOUT;
815  }  }
816    
817  /* re-allocate the buffer used to draw the menu. This is used */  /* re-allocate the buffer used to draw the menu. This is used */
818  /* to collapse/expand the buffer */  /* to collapse/expand the buffer */
819  static void  static void
820  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
821        FIN;
822      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
823    
824      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
825      g_assert (priv->map_source);      g_assert (priv->source_sel.surface);
826    
827      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
828      if(priv->expanded) {      if(priv->source_sel.expanded) {
829          cairo_text_extents_t extents;          cairo_text_extents_t extents;
830    
831          /* determine content size */          /* determine content size */
832          cairo_t *cr = cairo_create(priv->map_source);          g_assert(priv->source_sel.surface);
833            cairo_t *cr = cairo_create(priv->source_sel.surface);
834          cairo_select_font_face (cr, "Sans",          cairo_select_font_face (cr, "Sans",
835                                  CAIRO_FONT_SLANT_NORMAL,                                  CAIRO_FONT_SLANT_NORMAL,
836                                  CAIRO_FONT_WEIGHT_BOLD);                                  CAIRO_FONT_WEIGHT_BOLD);
# Line 473  osd_source_reallocate(osm_gps_map_osd_t Line 847  osd_source_reallocate(osm_gps_map_osd_t
847          }          }
848          cairo_destroy(cr);          cairo_destroy(cr);
849    
850          priv->width  = max_w + 2*OSD_TEXT_BORDER;          priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
851          priv->height = OSM_GPS_MAP_SOURCE_LAST *          priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
852              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
853    
854          w = OSD_S_EXP_W;          w = OSD_S_EXP_W;
855          h = OSD_S_EXP_H;          h = OSD_S_EXP_H;
856      }      }
857    
858      cairo_surface_destroy(priv->map_source);      cairo_surface_destroy(priv->source_sel.surface);
859      priv->map_source =      priv->source_sel.surface =
860          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
861    
862      osd_render_source_sel(osd);      osd_render_source_sel(osd, TRUE);
863        FOUT;
864  }  }
865    
866  #define OSD_HZ      15  #define OSD_HZ      15
867  #define OSD_TIME    500  #define OSD_TIME    500
868    
869  static gboolean osd_source_animate(gpointer data) {  static gboolean osd_source_animate(gpointer data) {
870        FIN;
871      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
872      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
873      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
874      gboolean done = FALSE;      gboolean done = FALSE;
875      priv->count += priv->dir;      priv->source_sel.count += priv->source_sel.dir;
876    
877      /* shifting in */      /* shifting in */
878      if(priv->dir < 0) {      if(priv->source_sel.dir < 0) {
879          if(priv->count <= 0) {          if(priv->source_sel.count <= 0) {
880              priv->count = 0;              priv->source_sel.count = 0;
881              done = TRUE;              done = TRUE;
882          }          }
883      } else {      } else {
884          if(priv->count >= 1000) {          if(priv->source_sel.count >= 1000) {
885              priv->expanded = FALSE;              priv->source_sel.expanded = FALSE;
886              osd_source_reallocate(osd);              osd_source_reallocate(osd);
887    
888              priv->count = 1000;              priv->source_sel.count = 1000;
889              done = TRUE;              done = TRUE;
890          }          }
891      }      }
# Line 517  static gboolean osd_source_animate(gpoin Line 893  static gboolean osd_source_animate(gpoin
893    
894      /* 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 */
895    
896      /* nicer sinoid mapping */      /* nice sinoid mapping */
897      float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;      float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
898      priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +      priv->source_sel.shift =
899            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
900          m * diff;          m * diff;
901    
902        /* make sure the screen is updated */
903      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
904    
905        /* stop animation if done */
906      if(done)      if(done)
907          priv->handler_id = 0;          priv->source_sel.handler_id = 0;
908    
909        FOUT;
910      return !done;      return !done;
911  }  }
912    
# Line 534  static gboolean osd_source_animate(gpoin Line 914  static gboolean osd_source_animate(gpoin
914  static void  static void
915  osd_source_toggle(osm_gps_map_osd_t *osd)  osd_source_toggle(osm_gps_map_osd_t *osd)
916  {  {
917        FIN;
918      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
919    
920      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
921      if(priv->handler_id)      if(priv->source_sel.handler_id)
922          return;          return;
923    
924      /* expand immediately, collapse is handle at the end of the collapse animation */      /* expand immediately, collapse is handle at the end of the */
925      if(!priv->expanded) {      /* collapse animation */
926          priv->expanded = TRUE;      if(!priv->source_sel.expanded) {
927            priv->source_sel.expanded = TRUE;
928          osd_source_reallocate(osd);          osd_source_reallocate(osd);
929    
930          priv->count = 1000;          priv->source_sel.count = 1000;
931          priv->shift = osd->widget->allocation.width - OSD_S_W;          priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
932          priv->dir = -1000/OSD_HZ;          priv->source_sel.dir = -1000/OSD_HZ;
933      } else {      } else {
934          priv->count =  0;          priv->source_sel.count =  0;
935          priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;          priv->source_sel.shift = osd->widget->allocation.width -
936          priv->dir = +1000/OSD_HZ;              OSD_S_EXP_W + OSD_S_X;
937            priv->source_sel.dir = +1000/OSD_HZ;
938      }      }
939    
940      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      /* start timer to handle animation */
941        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
942                                                      osd_source_animate, osd);
943        FOUT;
944  }  }
945    
946  /* check if the user clicked inside the source selection area */  /* check if the user clicked inside the source selection area */
947  static osd_button_t  static osd_button_t
948  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) {
949        FIN;
950      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
951    
952      if(!priv->expanded)      if(!priv->source_sel.expanded)
953          x -= osd->widget->allocation.width - OSD_S_W;          x -= osd->widget->allocation.width - OSD_S_W;
954      else      else
955          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 577  osd_source_check(osm_gps_map_osd_t *osd, Line 964  osd_source_check(osm_gps_map_osd_t *osd,
964          /* really within puller shape? */          /* really within puller shape? */
965          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)) {
966              /* expand source selector */              /* expand source selector */
967              osd_source_toggle(osd);              if(down)
968                    osd_source_toggle(osd);
969    
970              /* tell upper layers that user clicked some background element */              /* tell upper layers that user clicked some background element */
971              /* of the OSD */              /* of the OSD */
# Line 586  osd_source_check(osm_gps_map_osd_t *osd, Line 974  osd_source_check(osm_gps_map_osd_t *osd,
974      }      }
975    
976      /* check for clicks into data area */      /* check for clicks into data area */
977      if(priv->expanded && !priv->handler_id) {      if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
978          /* re-adjust from puller top to content top */          /* re-adjust from puller top to content top */
979          if(OSD_S_Y < 0)          if(OSD_S_Y < 0)
980              y += OSD_S_EXP_H - OSD_S_PH;              y += OSD_S_EXP_H - OSD_S_PH;
# Line 596  osd_source_check(osm_gps_map_osd_t *osd, Line 984  osd_source_check(osm_gps_map_osd_t *osd,
984             y > 0 &&             y > 0 &&
985             y < OSD_S_EXP_H) {             y < OSD_S_EXP_H) {
986    
987              int step = (priv->height - 2*OSD_TEXT_BORDER)              int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
988                  / OSM_GPS_MAP_SOURCE_LAST;                  / OSM_GPS_MAP_SOURCE_LAST;
989    
990              y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;              y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
991              y /= step;              y /= step;
992              y += 1;              y += 1;
993    
994              gint old = 0;              if(down) {
995              g_object_get(osd->widget, "map-source", &old, NULL);                  gint old = 0;
996                    g_object_get(osd->widget, "map-source", &old, NULL);
997              if(y > OSM_GPS_MAP_SOURCE_NULL &&  
998                 y <= OSM_GPS_MAP_SOURCE_LAST &&                  if(y > OSM_GPS_MAP_SOURCE_NULL &&
999                 old != y) {                     y <= OSM_GPS_MAP_SOURCE_LAST &&
1000                  g_object_set(osd->widget, "map-source", y, NULL);                     old != y) {
1001                        g_object_set(osd->widget, "map-source", y, NULL);
1002                  osd_render_source_sel(osd);  
1003                  osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));                      osd_render_source_sel(osd, TRUE);
1004                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
1005                    }
1006              }              }
1007    
1008              /* return "clicked in OSD background" to prevent further */              /* return "clicked in OSD background" to prevent further */
1009              /* processing by application */              /* processing by application */
1010              return OSD_BG;              return OSD_BG;
1011          }          }
1012      }      }
1013    
1014        FOUT;
1015      return OSD_NONE;      return OSD_NONE;
1016  }  }
1017  #endif // OSD_SOURCE_SEL  #endif // OSD_SOURCE_SEL
1018    
 static osd_button_t  
 osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  
     osd_button_t but = OSD_NONE;  
   
 #ifdef OSD_SOURCE_SEL  
     /* the source selection area is handles internally */  
     but = osd_source_check(osd, x, y);  
     if(but != OSD_NONE)  
         return but;  
 #endif  
   
     x -= OSD_X;  
     y -= OSD_Y;  
   
     if(OSD_X < 0)  
         x -= (osd->widget->allocation.width - OSD_W);  
   
     if(OSD_Y < 0)  
         y -= (osd->widget->allocation.height - OSD_H);  
   
     /* first do a rough test for the OSD area. */  
     /* this is just to avoid an unnecessary detailed test */  
     if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {  
 #ifndef OSD_NO_DPAD  
         but = osd_check_dpad(x, y);  
 #endif  
   
         if(but == OSD_NONE)  
             but = osd_check_zoom(x, y);  
     }  
   
     return but;  
 }  
   
1019  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1020  static void  static void
1021  osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
# Line 729  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1086  osd_zoom_labels(cairo_t *cr, gint x, gin
1086      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1087  }  }
1088    
1089    #ifdef OSD_COORDINATES
1090    
1091    #ifndef OSD_COORDINATES_FONT_SIZE
1092    #define OSD_COORDINATES_FONT_SIZE (12.0)
1093    #endif
1094    
1095    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1096    
1097    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1098    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET+OSD_COORDINATES_FONT_SIZE/4)
1099    
1100    /* these can be overwritten with versions that support */
1101    /* localization */
1102    #ifndef OSD_COORDINATES_CHR_N
1103    #define OSD_COORDINATES_CHR_N  "N"
1104    #endif
1105    #ifndef OSD_COORDINATES_CHR_S
1106    #define OSD_COORDINATES_CHR_S  "S"
1107    #endif
1108    #ifndef OSD_COORDINATES_CHR_E
1109    #define OSD_COORDINATES_CHR_E  "E"
1110    #endif
1111    #ifndef OSD_COORDINATES_CHR_W
1112    #define OSD_COORDINATES_CHR_W  "W"
1113    #endif
1114    
1115    
1116    
1117    /* this is the classic geocaching notation */
1118    static char
1119    *osd_latitude_str(float latitude) {
1120        char *c = OSD_COORDINATES_CHR_N;
1121        float integral, fractional;
1122    
1123        if(isnan(latitude))
1124            return NULL;
1125    
1126        if(latitude < 0) {
1127            latitude = fabs(latitude);
1128            c = OSD_COORDINATES_CHR_S;
1129        }
1130    
1131        fractional = modff(latitude, &integral);
1132    
1133        return g_strdup_printf("%s %02d° %06.3f'",
1134                               c, (int)integral, fractional*60.0);
1135    }
1136    
1137    static char
1138    *osd_longitude_str(float longitude) {
1139        char *c = OSD_COORDINATES_CHR_E;
1140        float integral, fractional;
1141    
1142        if(isnan(longitude))
1143            return NULL;
1144    
1145        if(longitude < 0) {
1146            longitude = fabs(longitude);
1147            c = OSD_COORDINATES_CHR_W;
1148        }
1149    
1150        fractional = modff(longitude, &integral);
1151    
1152        return g_strdup_printf("%s %03d° %06.3f'",
1153                               c, (int)integral, fractional*60.0);
1154    }
1155    
1156    /* render a string at the given screen position */
1157    static int
1158    osd_render_centered_text(cairo_t *cr, int y, int width, char *text) {
1159        FIN;
1160    
1161        if(!text) return y;
1162    
1163        char *p = g_malloc(strlen(text)+4);  // space for "...\n"
1164        strcpy(p, text);
1165    
1166        cairo_text_extents_t extents;
1167        memset(&extents, 0, sizeof(cairo_text_extents_t));
1168        cairo_text_extents (cr, p, &extents);
1169        g_assert(extents.width != 0.0);
1170    
1171        /* check if text needs to be truncated */
1172        int trunc_at = strlen(text);
1173        while(extents.width > width) {
1174    
1175            /* cut off all utf8 multibyte remains so the actual */
1176            /* truncation only deals with one byte */
1177            while((p[trunc_at-1] & 0xc0) == 0x80) {
1178                trunc_at--;
1179                g_assert(trunc_at > 0);
1180            }
1181    
1182            trunc_at--;
1183            g_assert(trunc_at > 0);
1184    
1185            strcpy(p+trunc_at, "...");
1186            cairo_text_extents (cr, p, &extents);
1187        }
1188    
1189        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1190        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1191        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1192        cairo_text_path (cr, p);
1193        cairo_stroke (cr);
1194    
1195        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1196        cairo_move_to (cr, (width - extents.width)/2, y - extents.y_bearing);
1197        cairo_show_text (cr, p);
1198    
1199        g_free(p);
1200    
1201        /* skip + 1/5 line */
1202        FOUT;
1203        return y + 6*OSD_COORDINATES_FONT_SIZE/5;
1204    }
1205    
1206    static void
1207    osd_render_coordinates(osm_gps_map_osd_t *osd)
1208    {
1209        FIN;
1210        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1211    
1212        if(!priv->coordinates.surface)
1213            return;
1214    
1215        /* get current map position */
1216        gfloat lat, lon;
1217        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1218    
1219        /* check if position has changed enough to require redraw */
1220        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1221            /* 1/60000 == 1/1000 minute */
1222            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1223               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1224                return;
1225    
1226        priv->coordinates.lat = lat;
1227        priv->coordinates.lon = lon;
1228    
1229        /* first fill with transparency */
1230    
1231        g_assert(priv->coordinates.surface);
1232        cairo_t *cr = cairo_create(priv->coordinates.surface);
1233        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1234        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1235        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1236        cairo_paint(cr);
1237        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1238    
1239        cairo_select_font_face (cr, "Sans",
1240                                CAIRO_FONT_SLANT_NORMAL,
1241                                CAIRO_FONT_WEIGHT_BOLD);
1242        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1243    
1244        char *latitude = osd_latitude_str(lat);
1245        char *longitude = osd_longitude_str(lon);
1246    
1247        int y = OSD_COORDINATES_OFFSET;
1248        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, latitude);
1249        y = osd_render_centered_text(cr, y, OSD_COORDINATES_W, longitude);
1250    
1251        g_free(latitude);
1252        g_free(longitude);
1253    
1254        cairo_destroy(cr);
1255        FOUT;
1256    }
1257    #endif  // OSD_COORDINATES
1258    
1259    #ifdef OSD_NAV
1260    #define OSD_NAV_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1261    #define OSD_NAV_H  (11*OSD_COORDINATES_FONT_SIZE)
1262    
1263    /* http://mathforum.org/library/drmath/view/55417.html */
1264    static float get_bearing(float lat1, float lon1, float lat2, float lon2) {
1265      return atan2( sin(lon2 - lon1) * cos(lat2),
1266                    cos(lat1) * sin(lat2) -
1267                    sin(lat1) * cos(lat2) * cos(lon2 - lon1));
1268    }
1269    
1270    /* http://mathforum.org/library/drmath/view/51722.html */
1271    static float get_distance(float lat1, float lon1, float lat2, float lon2) {
1272      float aob = acos(cos(lat1) * cos(lat2) * cos(lon2 - lon1) +
1273                       sin(lat1) * sin(lat2));
1274    
1275      //  return(aob * 3959.0);   /* great circle radius in miles */
1276    
1277      return(aob * 6371000.0);     /* great circle radius in meters */
1278    }
1279    
1280    static void
1281    osd_render_nav(osm_gps_map_osd_t *osd)
1282    {
1283        FIN;
1284        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1285    
1286        if(!priv->nav.surface || isnan(priv->nav.lat) || isnan(priv->nav.lon))
1287            return;
1288    
1289        /* first fill with transparency */
1290        g_assert(priv->nav.surface);
1291        cairo_t *cr = cairo_create(priv->nav.surface);
1292        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1293        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1294        cairo_paint(cr);
1295        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1296    
1297        cairo_select_font_face (cr, "Sans",
1298                                CAIRO_FONT_SLANT_NORMAL,
1299                                CAIRO_FONT_WEIGHT_BOLD);
1300        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1301    
1302        char *latitude = osd_latitude_str(priv->nav.lat);
1303        char *longitude = osd_longitude_str(priv->nav.lon);
1304    
1305        int y = OSD_COORDINATES_OFFSET;
1306        y = osd_render_centered_text(cr, y, OSD_NAV_W, priv->nav.name);
1307        y = osd_render_centered_text(cr, y, OSD_NAV_W, latitude);
1308        y = osd_render_centered_text(cr, y, OSD_NAV_W, longitude);
1309    
1310        g_free(latitude);
1311        g_free(longitude);
1312    
1313        /* everything below this is the compass. we need to know this */
1314        /* to differ between coordinate clicks and compass clicks */
1315        priv->nav.click_sep = y;
1316    
1317        /* draw the compass */
1318        int radius = (OSD_NAV_H - y - 5*OSD_COORDINATES_FONT_SIZE/4)/2;
1319        if(radius > OSD_NAV_W/2)
1320            radius = OSD_NAV_W/2;
1321    
1322        int x = OSD_NAV_W/2+1;
1323        y += radius;
1324    
1325        cairo_stroke (cr);
1326    
1327        /* draw background */
1328        cairo_arc(cr, x, y, radius, 0,  2*M_PI);
1329        cairo_set_source_rgba (cr, 1, 1, 1, 0.5);
1330        cairo_fill_preserve (cr);
1331        cairo_set_source_rgb (cr, 0, 0, 0);
1332        cairo_set_line_width (cr, 1);
1333        cairo_stroke (cr);
1334    
1335        /* draw pointer */
1336    #define ARROW_WIDTH     0.3
1337    #define ARROW_LENGTH    0.7
1338    
1339        coord_t mpos, *pos = osm_gps_map_get_gps (OSM_GPS_MAP(osd->widget));
1340        if(priv->nav.mode) {
1341            gfloat lat, lon;
1342            g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1343            mpos.rlat = deg2rad(lat);
1344            mpos.rlon = deg2rad(lon);
1345            pos = &mpos;
1346        }
1347    
1348        if(pos) {
1349            float arot = get_bearing(pos->rlat, pos->rlon,
1350                         deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1351    
1352            cairo_move_to(cr,
1353                          x + radius *  ARROW_LENGTH *  sin(arot),
1354                          y + radius *  ARROW_LENGTH * -cos(arot));
1355    
1356            cairo_line_to(cr,
1357                          x + radius * -ARROW_LENGTH *  sin(arot+ARROW_WIDTH),
1358                          y + radius * -ARROW_LENGTH * -cos(arot+ARROW_WIDTH));
1359    
1360            cairo_line_to(cr,
1361                          x + radius * -0.5 * ARROW_LENGTH *  sin(arot),
1362                          y + radius * -0.5 * ARROW_LENGTH * -cos(arot));
1363    
1364            cairo_line_to(cr,
1365                          x + radius * -ARROW_LENGTH *  sin(arot-ARROW_WIDTH),
1366                          y + radius * -ARROW_LENGTH * -cos(arot-ARROW_WIDTH));
1367    
1368            cairo_close_path(cr);
1369            if(priv->nav.mode)
1370                cairo_set_source_rgb (cr, 0, 0, 0);
1371            else
1372                cairo_set_source_rgb (cr, 0, 0, 0.8);
1373    
1374            cairo_fill (cr);
1375    
1376            y += radius + OSD_COORDINATES_FONT_SIZE/4;
1377    
1378            float dist = get_distance(pos->rlat, pos->rlon,
1379                            deg2rad(priv->nav.lat), deg2rad(priv->nav.lon));
1380    
1381            char *dist_str = NULL;
1382            if(!priv->nav.imperial) {
1383                /* metric is easy ... */
1384                if(dist<1000)
1385                    dist_str = g_strdup_printf("%u m", (int)dist);
1386                else
1387                    dist_str = g_strdup_printf("%.1f km", dist/1000);
1388            } else {
1389                /* and now the hard part: scale for useful imperial values :-( */
1390                /* try to convert to feet, 1ft == 0.3048 m */
1391    
1392                if(dist/(3*0.3048) >= 1760.0)      /* more than 1760 yard? */
1393                    dist_str = g_strdup_printf("%.1f mi", dist/(0.3048*3*1760.0));
1394                else if(dist/0.3048 >= 100)        /* more than 100 feet? */
1395                    dist_str = g_strdup_printf("%.1f yd", dist/(0.3048*3));
1396                else
1397                    dist_str = g_strdup_printf("%.0f ft", dist/0.3048);
1398            }
1399    
1400            y = osd_render_centered_text(cr, y, OSD_NAV_W, dist_str);
1401            g_free(dist_str);
1402        }
1403    
1404        cairo_destroy(cr);
1405        FOUT;
1406    }
1407    
1408    /* check if the user clicked inside the source selection area */
1409    static osd_button_t
1410    osd_nav_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
1411        FIN;
1412        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1413    
1414        if(!priv->nav.surface || down)
1415            return OSD_NONE;
1416    
1417        x -= OSD_X;
1418        if(OSD_X < 0)
1419            x -= (osd->widget->allocation.width - OSD_NAV_W);
1420    
1421        y -= (osd->widget->allocation.height - OSD_NAV_H)/2;
1422    
1423        if(x >= 0 && y >= 0 && x <= OSD_NAV_W && y <= OSD_NAV_H) {
1424            if(y < priv->nav.click_sep)
1425                osm_gps_map_set_center(OSM_GPS_MAP(osd->widget),
1426                                       priv->nav.lat, priv->nav.lon);
1427            else {
1428                priv->nav.mode = !priv->nav.mode;
1429                osm_gps_map_redraw(OSM_GPS_MAP(osd->widget));
1430            }
1431        }
1432    
1433        FOUT;
1434        return OSD_NONE;
1435    }
1436    
1437    void osm_gps_map_osd_clear_nav (OsmGpsMap *map) {
1438        FIN;
1439        g_return_if_fail (OSM_IS_GPS_MAP (map));
1440    
1441        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1442        g_return_if_fail (osd);
1443    
1444        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1445        g_return_if_fail (priv);
1446    
1447        if(priv->nav.surface) {
1448            cairo_surface_destroy(priv->nav.surface);
1449            priv->nav.surface = NULL;
1450            priv->nav.lat = OSM_GPS_MAP_INVALID;
1451            priv->nav.lon = OSM_GPS_MAP_INVALID;
1452            if(priv->nav.name) g_free(priv->nav.name);
1453        }
1454        osm_gps_map_redraw(map);
1455        FOUT;
1456    }
1457    
1458    void
1459    osm_gps_map_osd_draw_nav (OsmGpsMap *map, gboolean imperial,
1460                              float latitude, float longitude, char *name) {
1461        FIN;
1462        g_return_if_fail (OSM_IS_GPS_MAP (map));
1463    
1464        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1465        g_return_if_fail (osd);
1466    
1467        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1468        g_return_if_fail (priv);
1469    
1470        osm_gps_map_osd_clear_nav (map);
1471    
1472        /* allocate balloon surface */
1473        priv->nav.surface =
1474            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1475                                       OSD_NAV_W+2, OSD_NAV_H+2);
1476    
1477        priv->nav.lat = latitude;
1478        priv->nav.lon = longitude;
1479        priv->nav.name = g_strdup(name);
1480        priv->nav.imperial = imperial;
1481    
1482        osd_render_nav(osd);
1483    
1484        osm_gps_map_redraw(map);
1485        FOUT;
1486    }
1487    
1488    #endif // OSD_NAV
1489    
1490    static osd_button_t
1491    osd_check_int(osm_gps_map_osd_t *osd, gboolean click, gboolean down, gint x, gint y) {
1492        FIN;
1493        osd_button_t but = OSD_NONE;
1494    
1495    #ifdef OSD_BALLOON
1496        if(down) {
1497            /* needed to handle balloons that are created at click */
1498            osd_priv_t *priv = (osd_priv_t*)osd->priv;
1499            priv->balloon.just_created = FALSE;
1500        }
1501    #endif
1502    
1503    #ifdef OSD_SOURCE_SEL
1504        /* the source selection area is handles internally */
1505        but = osd_source_check(osd, down, x, y);
1506    #endif
1507    
1508    #ifdef OSD_NAV
1509        if(but == OSD_NONE) {
1510            /* the source selection area is handles internally */
1511            but = osd_nav_check(osd, down, x, y);
1512        }
1513    #endif
1514    
1515        if(but == OSD_NONE) {
1516            gint mx = x - OSD_X;
1517            gint my = y - OSD_Y;
1518    
1519            if(OSD_X < 0)
1520                mx -= (osd->widget->allocation.width - OSD_W);
1521    
1522            if(OSD_Y < 0)
1523                my -= (osd->widget->allocation.height - OSD_H);
1524    
1525            /* first do a rough test for the OSD area. */
1526            /* this is just to avoid an unnecessary detailed test */
1527            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
1528    #ifndef OSD_NO_DPAD
1529                but = osd_check_dpad(mx, my);
1530    #endif
1531            }
1532    
1533            if(but == OSD_NONE)
1534                but = osd_check_zoom(mx, my);
1535        }
1536    
1537    #ifdef OSD_BALLOON
1538        if(but == OSD_NONE) {
1539            /* check if user clicked into balloon */
1540            if(osd_balloon_check(osd, click, down, x, y))
1541                but = OSD_BG;
1542        }
1543    #endif
1544    
1545        FOUT;
1546        return but;
1547    }
1548    
1549    
1550    #ifdef OSD_CROSSHAIR
1551    
1552    #ifndef OSD_CROSSHAIR_RADIUS
1553    #define OSD_CROSSHAIR_RADIUS 10
1554    #endif
1555    
1556    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1557    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1558    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1559    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1560    
1561    static void
1562    osd_render_crosshair_shape(cairo_t *cr) {
1563        FIN;
1564        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1565                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1566    
1567        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1568                       OSD_CROSSHAIR_H/2);
1569        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1570        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1571                       OSD_CROSSHAIR_H/2);
1572        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1573    
1574        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1575                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1576        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1577        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1578                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1579        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1580    
1581        cairo_stroke (cr);
1582        FOUT;
1583    }
1584    
1585    static void
1586    osd_render_crosshair(osm_gps_map_osd_t *osd)
1587    {
1588        FIN;
1589        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1590    
1591        if(!priv->crosshair.surface || priv->crosshair.rendered)
1592            return;
1593    
1594        priv->crosshair.rendered = TRUE;
1595    
1596        /* first fill with transparency */
1597        g_assert(priv->crosshair.surface);
1598        cairo_t *cr = cairo_create(priv->crosshair.surface);
1599        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1600        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1601        cairo_paint(cr);
1602        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1603    
1604        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1605    
1606        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1607        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1608        osd_render_crosshair_shape(cr);
1609    
1610        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1611        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1612        osd_render_crosshair_shape(cr);
1613    
1614        cairo_destroy(cr);
1615        FOUT;
1616    }
1617    #endif
1618    
1619    #ifdef OSD_SCALE
1620    
1621    #ifndef OSD_SCALE_FONT_SIZE
1622    #define OSD_SCALE_FONT_SIZE (12.0)
1623    #endif
1624    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1625    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1626    
1627  /* various parameters used to create the scale */  /* various parameters used to create the scale */
1628  #define OSD_SCALE_H2   (OSD_SCALE_H/2)  #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1629  #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)  #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
# Line 739  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1634  osd_zoom_labels(cairo_t *cr, gint x, gin
1634  static void  static void
1635  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1636  {  {
1637        FIN;
1638      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1639    
1640        if(!priv->scale.surface)
1641            return;
1642    
1643      /* this only needs to be rendered if the zoom has changed */      /* this only needs to be rendered if the zoom has changed */
1644      gint zoom;      gint zoom;
1645      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);      g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1646      if(zoom == priv->scale_zoom)      if(zoom == priv->scale.zoom)
1647          return;          return;
1648    
1649      priv->scale_zoom = zoom;      priv->scale.zoom = zoom;
1650    
1651      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1652    
1653      /* first fill with transparency */      /* first fill with transparency */
1654      cairo_t *cr = cairo_create(priv->scale);      g_assert(priv->scale.surface);
1655        cairo_t *cr = cairo_create(priv->scale.surface);
1656      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1657      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);
1658      // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);      // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
# Line 862  osd_render_scale(osm_gps_map_osd_t *osd) Line 1762  osd_render_scale(osm_gps_map_osd_t *osd)
1762      cairo_stroke(cr);      cairo_stroke(cr);
1763    
1764      cairo_destroy(cr);      cairo_destroy(cr);
1765        FOUT;
1766  }  }
1767    #endif
1768    
1769  static void  static void
1770  osd_render(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1771  {  {
1772        FIN;
1773      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1774    
1775        if(!priv->controls.surface)
1776            return;
1777    
1778        printf("XXX rendering OSD with %p\n", osd->cb);
1779    
1780        if(priv->controls.rendered
1781    #ifdef OSD_GPS_BUTTON
1782           && (priv->controls.gps_enabled == (osd->cb != NULL))
1783    #endif
1784           )
1785            return;
1786    
1787    #ifdef OSD_GPS_BUTTON
1788        priv->controls.gps_enabled = (osd->cb != NULL);
1789    #endif
1790        priv->controls.rendered = TRUE;
1791    
1792  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1793      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1794      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 876  osd_render(osm_gps_map_osd_t *osd) Line 1796  osd_render(osm_gps_map_osd_t *osd)
1796  #endif  #endif
1797    
1798      /* first fill with transparency */      /* first fill with transparency */
1799      cairo_t *cr = cairo_create(priv->overlay);      g_assert(priv->controls.surface);
1800        cairo_t *cr = cairo_create(priv->controls.surface);
1801      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1802      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);
1803      cairo_paint(cr);      cairo_paint(cr);
# Line 947  osd_render(osm_gps_map_osd_t *osd) Line 1868  osd_render(osm_gps_map_osd_t *osd)
1868      cairo_stroke(cr);      cairo_stroke(cr);
1869    
1870      cairo_destroy(cr);      cairo_destroy(cr);
1871    }
1872    
1873    static void
1874    osd_render(osm_gps_map_osd_t *osd)
1875    {
1876        /* this function is actually called pretty often since the */
1877        /* OSD contents may have changed (due to a coordinate/zoom change). */
1878        /* The different OSD parts have to make sure that they don't */
1879        /* render unneccessarily often and thus waste CPU power */
1880    
1881        osd_render_controls(osd);
1882    
1883  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1884      osd_render_source_sel(osd);      osd_render_source_sel(osd, FALSE);
1885  #endif  #endif
1886    
1887  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1888      osd_render_scale(osd);      osd_render_scale(osd);
1889  #endif  #endif
1890    
1891    #ifdef OSD_CROSSHAIR
1892        osd_render_crosshair(osd);
1893    #endif
1894    
1895    #ifdef OSD_NAV
1896        osd_render_nav(osd);
1897    #endif
1898    
1899    #ifdef OSD_COORDINATES
1900        osd_render_coordinates(osd);
1901    #endif
1902  }  }
1903    
1904  static void  static void
# Line 964  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1908  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1908    
1909      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1910      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1911      if(!priv->overlay) {      if(!priv->controls.surface) {
1912          /* create overlay ... */          /* create overlay ... */
1913          priv->overlay =          priv->controls.surface =
1914              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);
1915    
1916            priv->controls.rendered = FALSE;
1917    #ifdef OSD_GPS_BUTTON
1918            priv->controls.gps_enabled = FALSE;
1919    #endif
1920    
1921  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1922          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
1923          priv->map_source =          priv->source_sel.surface =
1924              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1925                                             OSD_S_W+2, OSD_S_H+2);                                             OSD_S_W+2, OSD_S_H+2);
1926            priv->source_sel.rendered = FALSE;
1927  #endif  #endif
1928    
1929  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1930          priv->scale =          priv->scale.surface =
1931              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1932                                         OSD_SCALE_W, OSD_SCALE_H);                                         OSD_SCALE_W, OSD_SCALE_H);
1933          priv->scale_zoom = -1;          priv->scale.zoom = -1;
1934    #endif
1935    
1936    #ifdef OSD_CROSSHAIR
1937            priv->crosshair.surface =
1938                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1939                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1940            priv->crosshair.rendered = FALSE;
1941    #endif
1942    
1943    #ifdef OSD_COORDINATES
1944            priv->coordinates.surface =
1945                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1946                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1947    
1948            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1949  #endif  #endif
1950    
1951          /* ... and render it */          /* ... and render it */
# Line 990  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1955  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1955      // now draw this onto the original context      // now draw this onto the original context
1956      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1957    
1958      int x = OSD_X, y = OSD_Y;      gint x, y;
1959      if(OSD_X < 0)  
1960          x = osd->widget->allocation.width - OSD_W + OSD_X;  #ifdef OSD_SCALE
1961        x =  OSD_X;
1962        y = -OSD_Y;
1963        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1964        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1965    
1966        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1967        cairo_paint(cr);
1968    #endif
1969    
1970    #ifdef OSD_CROSSHAIR
1971        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1972        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1973    
1974        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1975        cairo_paint(cr);
1976    #endif
1977    
1978    #ifdef OSD_NAV
1979        if(priv->nav.surface) {
1980            x =  OSD_X;
1981            if(x < 0) x += osd->widget->allocation.width - OSD_NAV_W;
1982            y = (osd->widget->allocation.height - OSD_NAV_H)/2;
1983    
1984            cairo_set_source_surface(cr, priv->nav.surface, x, y);
1985            cairo_paint(cr);
1986        }
1987    #endif
1988    
1989    #ifdef OSD_COORDINATES
1990        x = -OSD_X;
1991        y = -OSD_Y;
1992        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1993        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1994    
1995        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1996        cairo_paint(cr);
1997    #endif
1998    
1999      if(OSD_Y < 0)  #ifdef OSD_BALLOON
2000          y = osd->widget->allocation.height - OSD_H + OSD_Y;      if(priv->balloon.surface) {
2001    
2002            /* convert given lat lon into screen coordinates */
2003            gint x, y;
2004            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
2005                                          priv->balloon.lat, priv->balloon.lon,
2006                                          &x, &y);
2007    
2008            /* check if balloon needs to be rerendered */
2009            osd_render_balloon(osd);
2010    
2011            cairo_set_source_surface(cr, priv->balloon.surface,
2012                                     x + priv->balloon.offset_x,
2013                                     y + priv->balloon.offset_y);
2014            cairo_paint(cr);
2015        }
2016    #endif
2017    
2018      cairo_set_source_surface(cr, priv->overlay, x, y);      x = OSD_X;
2019        if(x < 0)
2020            x += osd->widget->allocation.width - OSD_W;
2021    
2022        y = OSD_Y;
2023        if(y < 0)
2024            y += osd->widget->allocation.height - OSD_H;
2025    
2026        cairo_set_source_surface(cr, priv->controls.surface, x, y);
2027      cairo_paint(cr);      cairo_paint(cr);
2028    
2029  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2030      if(!priv->handler_id) {      if(!priv->source_sel.handler_id) {
2031          /* the OSD source selection is not being animated */          /* the OSD source selection is not being animated */
2032          if(!priv->expanded)          if(!priv->source_sel.expanded)
2033              x = osd->widget->allocation.width - OSD_S_W;              x = osd->widget->allocation.width - OSD_S_W;
2034          else          else
2035              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
2036      } else      } else
2037          x = priv->shift;          x = priv->source_sel.shift;
2038    
2039      y = OSD_S_Y;      y = OSD_S_Y;
2040      if(OSD_S_Y < 0) {      if(OSD_S_Y < 0) {
2041          if(!priv->expanded)          if(!priv->source_sel.expanded)
2042              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
2043          else          else
2044              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
2045      }      }
2046    
2047      cairo_set_source_surface(cr, priv->map_source, x, y);      cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
     cairo_paint(cr);  
 #endif  
   
 #ifdef OSD_SCALE  
     x =  OSD_X;  
     y = -OSD_Y;  
     if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;  
     if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;  
   
     cairo_set_source_surface(cr, priv->scale, x, y);  
2048      cairo_paint(cr);      cairo_paint(cr);
2049  #endif  #endif
2050    
2051      cairo_destroy(cr);      cairo_destroy(cr);
2052        FOUT;
2053  }  }
2054    
2055  static void  static void
2056  osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
2057  {  {
2058        FIN;
2059      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2060    
2061      if (priv->overlay)      if (priv->controls.surface)
2062           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
2063    
2064  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2065      if(priv->handler_id)      if(priv->source_sel.handler_id)
2066          gtk_timeout_remove(priv->handler_id);          gtk_timeout_remove(priv->source_sel.handler_id);
2067    
2068      if (priv->map_source)      if (priv->source_sel.surface)
2069           cairo_surface_destroy(priv->map_source);           cairo_surface_destroy(priv->source_sel.surface);
2070  #endif  #endif
2071    
2072  #ifdef OSD_SCALE  #ifdef OSD_SCALE
2073      if (priv->scale)      if (priv->scale.surface)
2074           cairo_surface_destroy(priv->scale);           cairo_surface_destroy(priv->scale.surface);
2075  #endif  #endif
2076    
2077    #ifdef OSD_CROSSHAIR
2078        if (priv->crosshair.surface)
2079             cairo_surface_destroy(priv->crosshair.surface);
2080    #endif
2081    
2082    #ifdef OSD_NAV
2083        if (priv->nav.surface)
2084             cairo_surface_destroy(priv->nav.surface);
2085    #endif
2086    
2087    #ifdef OSD_COORDINATES
2088        if (priv->coordinates.surface)
2089             cairo_surface_destroy(priv->coordinates.surface);
2090    #endif
2091    
2092    #ifdef OSD_BALLOON
2093        if (priv->balloon.surface)
2094             cairo_surface_destroy(priv->balloon.surface);
2095    #endif
2096    
2097        printf("freeing priv\n");
2098      g_free(priv);      g_free(priv);
2099        FOUT;
2100  }  }
2101    
2102  static gboolean  static gboolean
2103  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
2104  {  {
2105        FIN;
2106  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
2107      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
2108      return (priv->handler_id != 0);      return (priv->source_sel.handler_id != 0);
2109  #else  #else
2110      return FALSE;      return FALSE;
2111  #endif  #endif
2112  }  }
2113    
2114    static osd_button_t
2115    osd_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y) {
2116        FIN;
2117        return osd_check_int(osd, TRUE, down, x, y);
2118    }
2119    
2120  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
2121      .widget     = NULL,      .widget     = NULL,
2122    
# Line 1089  static osm_gps_map_osd_t osd_classic = { Line 2136  static osm_gps_map_osd_t osd_classic = {
2136  void  void
2137  osm_gps_map_osd_classic_init(OsmGpsMap *map)  osm_gps_map_osd_classic_init(OsmGpsMap *map)
2138  {  {
2139      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);      FIN;
2140    
2141        osd_priv_t *priv = g_new0(osd_priv_t, 1);
2142        printf("alloc new osd priv\n");
2143    
2144      osd_classic.priv = priv;      /* reset entries to default value */
2145        osd_classic.widget = NULL;
2146        osd_classic.cb     = NULL;
2147        osd_classic.data   = NULL;
2148        osd_classic.priv   = priv;
2149    
2150    #ifdef OSD_BALLOON
2151        priv->balloon.lat = OSM_GPS_MAP_INVALID;
2152        priv->balloon.lon = OSM_GPS_MAP_INVALID;
2153    #endif
2154    
2155      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
2156        FOUT;
2157  }  }
2158    
2159  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
# Line 1101  osm_gps_map_osd_classic_init(OsmGpsMap * Line 2161  osm_gps_map_osd_classic_init(OsmGpsMap *
2161  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
2162  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
2163                                   gpointer data) {                                   gpointer data) {
2164        FIN;
2165      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2166      g_return_if_fail (osd);      g_return_if_fail (osd);
2167    
# Line 1112  void osm_gps_map_osd_enable_gps (OsmGpsM Line 2173  void osm_gps_map_osd_enable_gps (OsmGpsM
2173      osd->render(osd);      osd->render(osd);
2174    
2175      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
2176        FOUT;
2177  }  }
2178  #endif  #endif
2179    
2180  osd_button_t  osd_button_t
2181  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {  osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
2182        FIN;
2183      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
2184      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
2185    
2186      return osd_check(osd, x, y);      return osd_check_int(osd, FALSE, TRUE, x, y);
2187  }  }
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