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

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revision 99 by harbaum, Mon Sep 7 19:22:02 2009 UTC revision 121 by harbaum, Sun Sep 20 19:26:29 2009 UTC
# Line 25  Line 25 
25  /* OSD_DIAMETER */  /* OSD_DIAMETER */
26  /* OSD_X, OSD_Y */  /* OSD_X, OSD_Y */
27    
 #define OSD_SCALE  
   
 #define OSD_SCALE_W  100  
 #define OSD_SCALE_H   20  
   
28  #ifndef USE_CAIRO  #ifndef USE_CAIRO
29  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
30  #endif  #endif
# Line 37  Line 32 
32  #include <cairo.h>  #include <cairo.h>
33    
34  #include "osm-gps-map.h"  #include "osm-gps-map.h"
35    #include "converter.h"
36  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
37    
38  //the osd controls  //the osd controls
39  typedef struct {  typedef struct {
40      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
41      cairo_surface_t *overlay;      struct {
42            cairo_surface_t *surface;
43            gboolean rendered;
44    #ifdef OSD_GPS_BUTTON
45            gboolean gps_enabled;
46    #endif
47        } controls;
48    
49    #ifdef OSD_BALLOON
50        //a balloon with additional info
51        struct {
52            cairo_surface_t *surface;
53            int orientation, offset_x, offset_y;
54    
55            gboolean just_created;
56            float lat, lon;
57            OsmGpsMapRect_t rect;
58    
59            /* function called to have the user app draw the contents */
60            OsmGpsMapBalloonCallback cb;
61            gpointer data;
62        } balloon;
63    #endif
64    
65  #ifdef OSD_SCALE  #ifdef OSD_SCALE
66      cairo_surface_t *scale;      struct {
67            cairo_surface_t *surface;
68            int zoom;
69        } scale;
70    #endif
71    
72    #ifdef OSD_CROSSHAIR
73        struct {
74            cairo_surface_t *surface;
75            gboolean rendered;
76        } crosshair;
77    #endif
78    
79    #ifdef OSD_COORDINATES
80        struct {
81            cairo_surface_t *surface;
82            float lat, lon;
83        } coordinates;
84  #endif  #endif
85    
86  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
87      /* values to handle the "source" menu */      struct {
88      cairo_surface_t *map_source;          /* values to handle the "source" menu */
89      gboolean expanded;          cairo_surface_t *surface;
90      gint shift, dir, count;          gboolean expanded;
91      gint handler_id;          gint shift, dir, count;
92      gint width, height;          gint handler_id;
93            gint width, height;
94            gboolean rendered;
95        } source_sel;
96  #endif  #endif
97    
98  } osd_priv_t;  } osd_priv_t;
99    
100    #ifdef OSD_BALLOON
101    /* most visual effects are hardcoded by now, but may be made */
102    /* available via properties later */
103    #ifndef BALLOON_AREA_WIDTH
104    #define BALLOON_AREA_WIDTH           290
105    #endif
106    #ifndef BALLOON_AREA_HEIGHT
107    #define BALLOON_AREA_HEIGHT           75
108    #endif
109    #ifndef BALLOON_CORNER_RADIUS
110    #define BALLOON_CORNER_RADIUS         10
111    #endif
112    
113    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
114    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
115    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
116    #define BALLOON_TRANSPARENCY         0.8
117    #define POINTER_HEIGHT                20
118    #define POINTER_FOOT_WIDTH            20
119    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
120    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
121    #define BALLOON_SHADOW_TRANSPARENCY  0.2
122    
123    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
124    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
125    
126    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
127    
128    
129    /* draw the bubble shape. this is used twice, once for the shape and once */
130    /* for the shadow */
131    static void
132    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
133           gboolean bottom, int px, int py, int px0, int px1) {
134    
135        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
136        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
137                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
138        if(!bottom) {
139            /* insert top pointer */
140            cairo_line_to (cr, px1, y0);
141            cairo_line_to (cr, px, py);
142            cairo_line_to (cr, px0, y0);
143        }
144    
145        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
146        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
147                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
148        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
149        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
150                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
151        if(bottom) {
152            /* insert bottom pointer */
153            cairo_line_to (cr, px0, y1);
154            cairo_line_to (cr, px, py);
155            cairo_line_to (cr, px1, y1);
156        }
157    
158        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
159        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
160                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
161    
162        cairo_close_path (cr);
163    }
164    
165    static void
166    osd_render_balloon(osm_gps_map_osd_t *osd) {
167        osd_priv_t *priv = (osd_priv_t*)osd->priv;
168    
169        /* get zoom */
170        gint zoom;
171        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
172    
173        /* ------- convert given coordinate into screen position --------- */
174        gint xs, ys;
175        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
176                                          priv->balloon.lat, priv->balloon.lon,
177                                          &xs, &ys);
178    
179        gint x0 = 1, y0 = 1;
180    
181        /* check position of this relative to screen center to determine */
182        /* pointer direction ... */
183        int pointer_x, pointer_x0, pointer_x1;
184        int pointer_y;
185    
186        /* ... and calculate position */
187        int orientation = 0;
188        if(xs > osd->widget->allocation.width/2) {
189            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
190            pointer_x = x0 - priv->balloon.offset_x;
191            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
192            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
193            orientation |= 1;
194        } else {
195            priv->balloon.offset_x = -POINTER_OFFSET;
196            pointer_x = x0 - priv->balloon.offset_x;
197            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
198            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
199        }
200    
201        gboolean bottom = FALSE;
202        if(ys > osd->widget->allocation.height/2) {
203            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
204            pointer_y = y0 - priv->balloon.offset_y;
205            bottom = TRUE;
206            orientation |= 2;
207        } else {
208            priv->balloon.offset_y = 0;
209            pointer_y = y0 - priv->balloon.offset_y;
210            y0 += POINTER_HEIGHT;
211        }
212    
213        /* if required orientation equals current one, then don't render */
214        /* anything */
215        if(orientation == priv->balloon.orientation)
216            return;
217    
218        priv->balloon.orientation = orientation;
219    
220        /* calculate bottom/right of box */
221        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
222    
223        /* save balloon screen coordinates for later use */
224        priv->balloon.rect.x = x0 + BALLOON_BORDER;
225        priv->balloon.rect.y = y0 + BALLOON_BORDER;
226        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
227        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
228    
229        cairo_t *cr = cairo_create(priv->balloon.surface);
230        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
231        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
232        cairo_paint(cr);
233        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
234    
235        /* --------- draw shadow --------------- */
236        osm_gps_map_draw_balloon_shape (cr,
237                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
238                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
239                     bottom, pointer_x, pointer_y,
240                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
241    
242        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
243        cairo_fill_preserve (cr);
244        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
245        cairo_set_line_width (cr, 0);
246        cairo_stroke (cr);
247    
248        /* --------- draw main shape ----------- */
249        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
250                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
251    
252        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
253        cairo_fill_preserve (cr);
254        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
255        cairo_set_line_width (cr, 1);
256        cairo_stroke (cr);
257    
258        if (priv->balloon.cb) {
259            /* clip in case application tries to draw in */
260                /* exceed of the balloon */
261            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
262                             priv->balloon.rect.w, priv->balloon.rect.h);
263            cairo_clip (cr);
264            cairo_new_path (cr);  /* current path is not
265                                     consumed by cairo_clip() */
266    
267            priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
268        }
269    
270        cairo_destroy(cr);
271    }
272    
273    /* return true if balloon is being displayed and if */
274    /* the given coordinate is within this balloon */
275    static gboolean
276    osd_balloon_check(osm_gps_map_osd_t *osd, gboolean down, gint x, gint y)
277    {
278        osd_priv_t *priv = (osd_priv_t*)osd->priv;
279    
280        if(!priv->balloon.surface)
281            return FALSE;
282    
283        gint xs, ys;
284        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
285                                          priv->balloon.lat, priv->balloon.lon,
286                                          &xs, &ys);
287    
288        xs += priv->balloon.rect.x + priv->balloon.offset_x;
289        ys += priv->balloon.rect.y + priv->balloon.offset_y;
290    
291        gboolean is_in =
292            (x > xs) && (x < xs + priv->balloon.rect.w) &&
293            (y > ys) && (y < ys + priv->balloon.rect.h);
294    
295        /* handle the fact that the balloon may have been created by the */
296        /* button down event */
297        if(!is_in && !down && !priv->balloon.just_created) {
298            /* the user actually clicked outside the balloon */
299    
300            /* close the balloon! */
301            osm_gps_map_osd_clear_balloon (OSM_GPS_MAP(osd->widget));
302        }
303    
304        return is_in;
305    }
306    
307    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
308        g_return_if_fail (OSM_IS_GPS_MAP (map));
309    
310        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
311        g_return_if_fail (osd);
312    
313        osd_priv_t *priv = (osd_priv_t*)osd->priv;
314        g_return_if_fail (priv);
315    
316        if(priv->balloon.surface) {
317            cairo_surface_destroy(priv->balloon.surface);
318            priv->balloon.surface = NULL;
319            priv->balloon.lat = OSM_GPS_MAP_INVALID;
320            priv->balloon.lon = OSM_GPS_MAP_INVALID;
321        }
322        osm_gps_map_redraw(map);
323    }
324    
325    void
326    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
327                                  OsmGpsMapBalloonCallback cb, gpointer data) {
328        g_return_if_fail (OSM_IS_GPS_MAP (map));
329    
330        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
331        g_return_if_fail (osd);
332    
333        osd_priv_t *priv = (osd_priv_t*)osd->priv;
334        g_return_if_fail (priv);
335    
336        osm_gps_map_osd_clear_balloon (map);
337    
338        /* allocate balloon surface */
339        priv->balloon.surface =
340            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
341                                       BALLOON_W+2, BALLOON_H+2);
342    
343        priv->balloon.lat = latitude;
344        priv->balloon.lon = longitude;
345        priv->balloon.cb = cb;
346        priv->balloon.data = data;
347        priv->balloon.just_created = TRUE;
348    
349        priv->balloon.orientation = -1;
350    
351        osd_render_balloon(osd);
352    
353        osm_gps_map_redraw(map);
354    }
355    
356    #endif // OSD_BALLOON
357    
358  /* position and extent of bounding box */  /* position and extent of bounding box */
359  #ifndef OSD_X  #ifndef OSD_X
360  #define OSD_X      (10)  #define OSD_X      (10)
# Line 281  osd_check_zoom(gint x, gint y) { Line 577  osd_check_zoom(gint x, gint y) {
577  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
578    
579  /* size of usable area when expanded */  /* size of usable area when expanded */
580  #define OSD_S_AREA_W (priv->width)  #define OSD_S_AREA_W (priv->source_sel.width)
581  #define OSD_S_AREA_H (priv->height)  #define OSD_S_AREA_H (priv->source_sel.height)
582  #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)
583  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
584    
# Line 298  osd_check_zoom(gint x, gint y) { Line 594  osd_check_zoom(gint x, gint y) {
594  /* or the entire menu incl. the puller (expanded) */  /* or the entire menu incl. the puller (expanded) */
595  static void  static void
596  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) {
597      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
598          /* just draw the puller */          /* just draw the puller */
599          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
600          cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);          cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
# Line 326  osd_source_content(osm_gps_map_osd_t *os Line 622  osd_source_content(osm_gps_map_osd_t *os
622    
623      int py = offset + OSD_S_RAD - OSD_S_D0;      int py = offset + OSD_S_RAD - OSD_S_D0;
624    
625      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
626          /* draw the "puller" open (<) arrow */          /* draw the "puller" open (<) arrow */
627          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);
628          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
# Line 351  osd_source_content(osm_gps_map_osd_t *os Line 647  osd_source_content(osm_gps_map_osd_t *os
647                                      CAIRO_FONT_WEIGHT_BOLD);                                      CAIRO_FONT_WEIGHT_BOLD);
648              cairo_set_font_size (cr, OSD_FONT_SIZE);              cairo_set_font_size (cr, OSD_FONT_SIZE);
649    
650              int i, step = (priv->height - 2*OSD_TEXT_BORDER) /              int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
651                  OSM_GPS_MAP_SOURCE_LAST;                  OSM_GPS_MAP_SOURCE_LAST;
652              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++) {
653                  cairo_text_extents_t extents;                  cairo_text_extents_t extents;
# Line 365  osd_source_content(osm_gps_map_osd_t *os Line 661  osd_source_content(osm_gps_map_osd_t *os
661                  if(source == i) {                  if(source == i) {
662                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
663                                      y - OSD_TEXT_SKIP,                                      y - OSD_TEXT_SKIP,
664                                      priv->width - OSD_TEXT_BORDER,                                      priv->source_sel.width - OSD_TEXT_BORDER,
665                                      step + OSD_TEXT_SKIP);                                      step + OSD_TEXT_SKIP);
666                      cairo_fill(cr);                      cairo_fill(cr);
667    
# Line 396  osd_source_content(osm_gps_map_osd_t *os Line 692  osd_source_content(osm_gps_map_osd_t *os
692  }  }
693    
694  static void  static void
695  osd_render_source_sel(osm_gps_map_osd_t *osd) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
696      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
697    
698        if(priv->source_sel.rendered && !force_rerender)
699            return;
700    
701        priv->source_sel.rendered = TRUE;
702    
703  #ifndef OSD_COLOR  #ifndef OSD_COLOR
704      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
705      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 406  osd_render_source_sel(osm_gps_map_osd_t Line 707  osd_render_source_sel(osm_gps_map_osd_t
707  #endif  #endif
708    
709      /* draw source selector */      /* draw source selector */
710      cairo_t *cr = cairo_create(priv->map_source);      cairo_t *cr = cairo_create(priv->source_sel.surface);
711      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
712      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);
713      cairo_paint(cr);      cairo_paint(cr);
# Line 447  osd_source_reallocate(osm_gps_map_osd_t Line 748  osd_source_reallocate(osm_gps_map_osd_t
748      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
749    
750      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
751      g_assert (priv->map_source);      g_assert (priv->source_sel.surface);
752    
753      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
754      if(priv->expanded) {      if(priv->source_sel.expanded) {
         /* ... and right of it the waypoint id */  
755          cairo_text_extents_t extents;          cairo_text_extents_t extents;
756    
757          /* determine content size */          /* determine content size */
758          cairo_t *cr = cairo_create(priv->map_source);          cairo_t *cr = cairo_create(priv->source_sel.surface);
759          cairo_select_font_face (cr, "Sans",          cairo_select_font_face (cr, "Sans",
760                                  CAIRO_FONT_SLANT_NORMAL,                                  CAIRO_FONT_SLANT_NORMAL,
761                                  CAIRO_FONT_WEIGHT_BOLD);                                  CAIRO_FONT_WEIGHT_BOLD);
# Line 472  osd_source_reallocate(osm_gps_map_osd_t Line 772  osd_source_reallocate(osm_gps_map_osd_t
772          }          }
773          cairo_destroy(cr);          cairo_destroy(cr);
774    
775          priv->width  = max_w + 2*OSD_TEXT_BORDER;          priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
776          priv->height = OSM_GPS_MAP_SOURCE_LAST *          priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
777              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
778    
779          w = OSD_S_EXP_W;          w = OSD_S_EXP_W;
780          h = OSD_S_EXP_H;          h = OSD_S_EXP_H;
781      }      }
782    
783      cairo_surface_destroy(priv->map_source);      cairo_surface_destroy(priv->source_sel.surface);
784      priv->map_source =      priv->source_sel.surface =
785          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
786    
787      osd_render_source_sel(osd);      osd_render_source_sel(osd, TRUE);
788  }  }
789    
790  #define OSD_HZ      15  #define OSD_HZ      15
# Line 495  static gboolean osd_source_animate(gpoin Line 795  static gboolean osd_source_animate(gpoin
795      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
796      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
797      gboolean done = FALSE;      gboolean done = FALSE;
798      priv->count += priv->dir;      priv->source_sel.count += priv->source_sel.dir;
799    
800      /* shifting in */      /* shifting in */
801      if(priv->dir < 0) {      if(priv->source_sel.dir < 0) {
802          if(priv->count <= 0) {          if(priv->source_sel.count <= 0) {
803              priv->count = 0;              priv->source_sel.count = 0;
804              done = TRUE;              done = TRUE;
805          }          }
806      } else {      } else {
807          if(priv->count >= 1000) {          if(priv->source_sel.count >= 1000) {
808              priv->expanded = FALSE;              priv->source_sel.expanded = FALSE;
809              osd_source_reallocate(osd);              osd_source_reallocate(osd);
810    
811              priv->count = 1000;              priv->source_sel.count = 1000;
812              done = TRUE;              done = TRUE;
813          }          }
814      }      }
# Line 516  static gboolean osd_source_animate(gpoin Line 816  static gboolean osd_source_animate(gpoin
816    
817      /* 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 */
818    
819      /* nicer sinoid mapping */      /* nice sinoid mapping */
820      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;
821      priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +      priv->source_sel.shift =
822            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
823          m * diff;          m * diff;
824    
825        /* make sure the screen is updated */
826      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
827    
828        /* stop animation if done */
829      if(done)      if(done)
830          priv->handler_id = 0;          priv->source_sel.handler_id = 0;
831    
832      return !done;      return !done;
833  }  }
# Line 536  osd_source_toggle(osm_gps_map_osd_t *osd Line 839  osd_source_toggle(osm_gps_map_osd_t *osd
839      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
840    
841      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
842      if(priv->handler_id)      if(priv->source_sel.handler_id)
843          return;          return;
844    
845      /* expand immediately, collapse is handle at the end of the collapse animation */      /* expand immediately, collapse is handle at the end of the */
846      if(!priv->expanded) {      /* collapse animation */
847          priv->expanded = TRUE;      if(!priv->source_sel.expanded) {
848            priv->source_sel.expanded = TRUE;
849          osd_source_reallocate(osd);          osd_source_reallocate(osd);
850    
851          priv->count = 1000;          priv->source_sel.count = 1000;
852          priv->shift = osd->widget->allocation.width - OSD_S_W;          priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
853          priv->dir = -1000/OSD_HZ;          priv->source_sel.dir = -1000/OSD_HZ;
854      } else {      } else {
855          priv->count =  0;          priv->source_sel.count =  0;
856          priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;          priv->source_sel.shift = osd->widget->allocation.width -
857          priv->dir = +1000/OSD_HZ;              OSD_S_EXP_W + OSD_S_X;
858            priv->source_sel.dir = +1000/OSD_HZ;
859      }      }
860    
861      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      /* start timer to handle animation */
862        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
863                                                      osd_source_animate, osd);
864  }  }
865    
866  /* check if the user clicked inside the source selection area */  /* check if the user clicked inside the source selection area */
867  static osd_button_t  static osd_button_t
868  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) {
869      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
870    
871      if(!priv->expanded)      if(!priv->source_sel.expanded)
872          x -= osd->widget->allocation.width - OSD_S_W;          x -= osd->widget->allocation.width - OSD_S_W;
873      else      else
874          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 576  osd_source_check(osm_gps_map_osd_t *osd, Line 883  osd_source_check(osm_gps_map_osd_t *osd,
883          /* really within puller shape? */          /* really within puller shape? */
884          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)) {
885              /* expand source selector */              /* expand source selector */
886              osd_source_toggle(osd);              if(down)
887                    osd_source_toggle(osd);
888    
889              /* tell upper layers that user clicked some background element */              /* tell upper layers that user clicked some background element */
890              /* of the OSD */              /* of the OSD */
# Line 585  osd_source_check(osm_gps_map_osd_t *osd, Line 893  osd_source_check(osm_gps_map_osd_t *osd,
893      }      }
894    
895      /* check for clicks into data area */      /* check for clicks into data area */
896      if(priv->expanded && !priv->handler_id) {      if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
897          /* re-adjust from puller top to content top */          /* re-adjust from puller top to content top */
898          if(OSD_S_Y < 0)          if(OSD_S_Y < 0)
899              y += OSD_S_EXP_H - OSD_S_PH;              y += OSD_S_EXP_H - OSD_S_PH;
# Line 595  osd_source_check(osm_gps_map_osd_t *osd, Line 903  osd_source_check(osm_gps_map_osd_t *osd,
903             y > 0 &&             y > 0 &&
904             y < OSD_S_EXP_H) {             y < OSD_S_EXP_H) {
905    
906              int step = (priv->height - 2*OSD_TEXT_BORDER)              int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
907                  / OSM_GPS_MAP_SOURCE_LAST;                  / OSM_GPS_MAP_SOURCE_LAST;
908    
909              y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;              y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
910              y /= step;              y /= step;
911              y += 1;              y += 1;
912    
913              gint old = 0;              if(down) {
914              g_object_get(osd->widget, "map-source", &old, NULL);                  gint old = 0;
915                    g_object_get(osd->widget, "map-source", &old, NULL);
916              if(y > OSM_GPS_MAP_SOURCE_NULL &&  
917                 y <= OSM_GPS_MAP_SOURCE_LAST &&                  if(y > OSM_GPS_MAP_SOURCE_NULL &&
918                 old != y) {                     y <= OSM_GPS_MAP_SOURCE_LAST &&
919                  g_object_set(osd->widget, "map-source", y, NULL);                     old != y) {
920                        g_object_set(osd->widget, "map-source", y, NULL);
921                  osd_render_source_sel(osd);  
922                  osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));                      osd_render_source_sel(osd, TRUE);
923                        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
924                    }
925              }              }
926    
927              /* return "clicked in OSD background" to prevent further */              /* return "clicked in OSD background" to prevent further */
# Line 625  osd_source_check(osm_gps_map_osd_t *osd, Line 935  osd_source_check(osm_gps_map_osd_t *osd,
935  #endif // OSD_SOURCE_SEL  #endif // OSD_SOURCE_SEL
936    
937  static osd_button_t  static osd_button_t
938  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) {
939      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
940    
941    #ifdef OSD_BALLOON
942        if(down) {
943            /* needed to handle balloons that are created at click */
944            osd_priv_t *priv = (osd_priv_t*)osd->priv;
945            priv->balloon.just_created = FALSE;
946        }
947    #endif
948    
949  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
950      /* the source selection area is handles internally */      /* the source selection area is handles internally */
951      but = osd_source_check(osd, x, y);      but = osd_source_check(osd, down, x, y);
     if(but != OSD_NONE)  
         return but;  
952  #endif  #endif
953    
954      x -= OSD_X;      if(but == OSD_NONE) {
955      y -= OSD_Y;          gint mx = x - OSD_X;
956            gint my = y - OSD_Y;
957      if(OSD_X < 0)  
958          x -= (osd->widget->allocation.width - OSD_W);          if(OSD_X < 0)
959                mx -= (osd->widget->allocation.width - OSD_W);
960      if(OSD_Y < 0)  
961          y -= (osd->widget->allocation.height - OSD_H);          if(OSD_Y < 0)
962                my -= (osd->widget->allocation.height - OSD_H);
963      /* first do a rough test for the OSD area. */  
964      /* this is just to avoid an unnecessary detailed test */          /* first do a rough test for the OSD area. */
965      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {          /* this is just to avoid an unnecessary detailed test */
966            if(mx > 0 && mx < OSD_W && my > 0 && my < OSD_H) {
967  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
968          but = osd_check_dpad(x, y);              but = osd_check_dpad(mx, my);
969  #endif  #endif
970            }
971    
972          if(but == OSD_NONE)          if(but == OSD_NONE)
973              but = osd_check_zoom(x, y);              but = osd_check_zoom(mx, my);
974      }      }
975    
976    #ifdef OSD_BALLOON
977        if(but == OSD_NONE) {
978            /* check if user clicked into balloon */
979            if(osd_balloon_check(osd, down, x, y))
980                but = OSD_BG;
981        }
982    #endif
983    
984      return but;      return but;
985  }  }
986    
# Line 728  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1054  osd_zoom_labels(cairo_t *cr, gint x, gin
1054      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1055  }  }
1056    
1057  static char *  #ifdef OSD_COORDINATES
1058  dist_str_metric(int dist)  
1059    #ifndef OSD_COORDINATES_FONT_SIZE
1060    #define OSD_COORDINATES_FONT_SIZE 12
1061    #endif
1062    
1063    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1064    
1065    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1066    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
1067    
1068    /* these can be overwritten with versions that support */
1069    /* localization */
1070    #ifndef OSD_COORDINATES_CHR_N
1071    #define OSD_COORDINATES_CHR_N  "N"
1072    #endif
1073    #ifndef OSD_COORDINATES_CHR_S
1074    #define OSD_COORDINATES_CHR_S  "S"
1075    #endif
1076    #ifndef OSD_COORDINATES_CHR_E
1077    #define OSD_COORDINATES_CHR_E  "E"
1078    #endif
1079    #ifndef OSD_COORDINATES_CHR_W
1080    #define OSD_COORDINATES_CHR_W  "W"
1081    #endif
1082    
1083    
1084    
1085    /* this is the classic geocaching notation */
1086    static char
1087    *osd_latitude_str(float latitude) {
1088        char *c = OSD_COORDINATES_CHR_N;
1089        float integral, fractional;
1090    
1091        if(isnan(latitude))
1092            return NULL;
1093    
1094        if(latitude < 0) {
1095            latitude = fabs(latitude);
1096            c = OSD_COORDINATES_CHR_S;
1097        }
1098    
1099        fractional = modff(latitude, &integral);
1100    
1101        return g_strdup_printf("%s %02d° %06.3f'",
1102                               c, (int)integral, fractional*60.0);
1103    }
1104    
1105    static char
1106    *osd_longitude_str(float longitude) {
1107        char *c = OSD_COORDINATES_CHR_E;
1108        float integral, fractional;
1109    
1110        if(isnan(longitude))
1111            return NULL;
1112    
1113        if(longitude < 0) {
1114            longitude = fabs(longitude);
1115            c = OSD_COORDINATES_CHR_W;
1116        }
1117    
1118        fractional = modff(longitude, &integral);
1119    
1120        return g_strdup_printf("%s %03d° %06.3f'",
1121                               c, (int)integral, fractional*60.0);
1122    }
1123    
1124    static void
1125    osd_render_coordinates(osm_gps_map_osd_t *osd)
1126  {  {
1127      if(dist<1000)      osd_priv_t *priv = (osd_priv_t*)osd->priv;
         return g_strdup_printf("%u m",  dist);  
1128    
1129      return g_strdup_printf("%u km", dist/1000);      /* get current map position */
1130        gfloat lat, lon;
1131        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1132    
1133        /* check if position has changed enough to require redraw */
1134        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1135            /* 1/60000 == 1/1000 minute */
1136            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1137               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1138                return;
1139    
1140        priv->coordinates.lat = lat;
1141        priv->coordinates.lon = lon;
1142    
1143        /* first fill with transparency */
1144        cairo_t *cr = cairo_create(priv->coordinates.surface);
1145        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1146        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1147        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1148        cairo_paint(cr);
1149        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1150    
1151        cairo_select_font_face (cr, "Sans",
1152                                CAIRO_FONT_SLANT_NORMAL,
1153                                CAIRO_FONT_WEIGHT_BOLD);
1154        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1155    
1156        char *latitude = osd_latitude_str(lat);
1157        char *longitude = osd_longitude_str(lon);
1158    
1159        cairo_text_extents_t lat_extents, lon_extents;
1160        cairo_text_extents (cr, latitude, &lat_extents);
1161        cairo_text_extents (cr, longitude, &lon_extents);
1162    
1163        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1164        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1165        cairo_move_to (cr,
1166                       (OSD_COORDINATES_W - lat_extents.width)/2,
1167                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1168        cairo_text_path (cr, latitude);
1169        cairo_move_to (cr,
1170                       (OSD_COORDINATES_W - lon_extents.width)/2,
1171                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1172                       OSD_COORDINATES_FONT_SIZE);
1173        cairo_text_path (cr, longitude);
1174        cairo_stroke (cr);
1175    
1176        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1177        cairo_move_to (cr,
1178                       (OSD_COORDINATES_W - lat_extents.width)/2,
1179                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1180        cairo_show_text (cr, latitude);
1181        cairo_move_to (cr,
1182                       (OSD_COORDINATES_W - lon_extents.width)/2,
1183                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1184                       OSD_COORDINATES_FONT_SIZE);
1185        cairo_show_text (cr, longitude);
1186    
1187        g_free(latitude);
1188        g_free(longitude);
1189    
1190        cairo_destroy(cr);
1191    }
1192    #endif  // OSD_COORDINATES
1193    
1194    #ifdef OSD_CROSSHAIR
1195    
1196    #ifndef OSD_CROSSHAIR_RADIUS
1197    #define OSD_CROSSHAIR_RADIUS 10
1198    #endif
1199    
1200    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1201    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1202    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1203    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1204    
1205    static void
1206    osd_render_crosshair_shape(cairo_t *cr) {
1207        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1208                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1209    
1210        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1211                       OSD_CROSSHAIR_H/2);
1212        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1213        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1214                       OSD_CROSSHAIR_H/2);
1215        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1216    
1217        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1218                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1219        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1220        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1221                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1222        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1223    
1224        cairo_stroke (cr);
1225  }  }
1226    
1227  static void  static void
1228    osd_render_crosshair(osm_gps_map_osd_t *osd)
1229    {
1230        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1231    
1232        if(priv->crosshair.rendered)
1233            return;
1234    
1235        priv->crosshair.rendered = TRUE;
1236    
1237        /* first fill with transparency */
1238        cairo_t *cr = cairo_create(priv->crosshair.surface);
1239        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1240        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1241        cairo_paint(cr);
1242        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1243    
1244        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1245    
1246        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1247        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1248        osd_render_crosshair_shape(cr);
1249    
1250        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1251        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1252        osd_render_crosshair_shape(cr);
1253    
1254        cairo_destroy(cr);
1255    }
1256    #endif
1257    
1258    #ifdef OSD_SCALE
1259    
1260    #ifndef OSD_SCALE_FONT_SIZE
1261    #define OSD_SCALE_FONT_SIZE 12
1262    #endif
1263    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1264    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1265    
1266    /* various parameters used to create the scale */
1267    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1268    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1269    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1270    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1271    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1272    
1273    static void
1274  osd_render_scale(osm_gps_map_osd_t *osd)  osd_render_scale(osm_gps_map_osd_t *osd)
1275  {  {
1276      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1277    
1278        /* this only needs to be rendered if the zoom has changed */
1279        gint zoom;
1280        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1281        if(zoom == priv->scale.zoom)
1282            return;
1283    
1284        priv->scale.zoom = zoom;
1285    
1286      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));      float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1287    
1288      /* first fill with transparency */      /* first fill with transparency */
1289      cairo_t *cr = cairo_create(priv->scale);      cairo_t *cr = cairo_create(priv->scale.surface);
1290      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1291      //    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);
1292      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);
1293      cairo_paint(cr);      cairo_paint(cr);
1294      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1295    
1296      /* determine the size of the scale width in meters */      /* determine the size of the scale width in meters */
1297      float width = (OSD_SCALE_W-2) * m_per_pix;      float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1298      printf("width = %f meters\n", width);  
   
1299      /* scale this to useful values */      /* scale this to useful values */
1300      int exp = logf(width)*M_LOG10E;      int exp = logf(width)*M_LOG10E;
1301      int mant = width/pow(10,exp);      int mant = width/pow(10,exp);
     printf("mant = %d, exp = %d \n", mant, exp);  
   
1302      int width_metric = mant * pow(10,exp);      int width_metric = mant * pow(10,exp);
1303      char *dist_str = dist_str_metric(width_metric);      char *dist_str = NULL;
1304        if(width_metric<1000)
1305            dist_str = g_strdup_printf("%u m", width_metric);
1306        else
1307            dist_str = g_strdup_printf("%u km", width_metric/1000);
1308      width_metric /= m_per_pix;      width_metric /= m_per_pix;
     printf("metric scale width = %d pixels: %s\n", width_metric, dist_str);  
1309    
1310      int font_size = 12;      /* and now the hard part: scale for useful imperial values :-( */
1311        /* try to convert to feet, 1ft == 0.3048 m */
1312        width /= 0.3048;
1313        float imp_scale = 0.3048;
1314        char *dist_imp_unit = "ft";
1315    
1316        if(width >= 100) {
1317            /* 1yd == 3 feet */
1318            width /= 3.0;
1319            imp_scale *= 3.0;
1320            dist_imp_unit = "yd";
1321    
1322            if(width >= 1760.0) {
1323                /* 1mi == 1760 yd */
1324                width /= 1760.0;
1325                imp_scale *= 1760.0;
1326                dist_imp_unit = "mi";
1327            }
1328        }
1329    
1330        /* also convert this to full tens/hundreds */
1331        exp = logf(width)*M_LOG10E;
1332        mant = width/pow(10,exp);
1333        int width_imp = mant * pow(10,exp);
1334        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1335    
1336        /* convert back to pixels */
1337        width_imp *= imp_scale;
1338        width_imp /= m_per_pix;
1339    
1340      cairo_select_font_face (cr, "Sans",      cairo_select_font_face (cr, "Sans",
1341                              CAIRO_FONT_SLANT_NORMAL,                              CAIRO_FONT_SLANT_NORMAL,
1342                              CAIRO_FONT_WEIGHT_BOLD);                              CAIRO_FONT_WEIGHT_BOLD);
1343      cairo_set_font_size (cr, font_size);      cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1344      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1345    
1346      cairo_text_extents_t extents;      cairo_text_extents_t extents;
1347      cairo_text_extents (cr, dist_str, &extents);      cairo_text_extents (cr, dist_str, &extents);
1348    
1349      cairo_move_to (cr, font_size/3, font_size);      cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1350        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1351        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1352        cairo_text_path (cr, dist_str);
1353        cairo_stroke (cr);
1354        cairo_move_to (cr, 2*OSD_SCALE_FD,
1355                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1356        cairo_text_path (cr, dist_str_imp);
1357        cairo_stroke (cr);
1358    
1359        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1360        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1361      cairo_show_text (cr, dist_str);      cairo_show_text (cr, dist_str);
1362        cairo_move_to (cr, 2*OSD_SCALE_FD,
1363                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1364        cairo_show_text (cr, dist_str_imp);
1365    
1366      printf("height = %f, bearing = %f\n",  extents.height, extents.y_bearing);      g_free(dist_str);
1367        g_free(dist_str_imp);
1368    
1369      /* draw white line */      /* draw white line */
1370      cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);      cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1371      cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);      cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1372      cairo_set_line_width (cr, 3);      cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1373      cairo_move_to (cr, 2, 2*font_size/3);      cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1374      cairo_rel_line_to (cr, 0,  2*font_size/3);      cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1375      cairo_rel_line_to (cr, width_metric, 0);      cairo_rel_line_to (cr, width_metric, 0);
1376      cairo_rel_line_to (cr, 0, -2*font_size/3);      cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1377        cairo_stroke(cr);
1378        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1379        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1380        cairo_rel_line_to (cr, width_imp, 0);
1381        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1382      cairo_stroke(cr);      cairo_stroke(cr);
1383    
1384      /* draw black line */      /* draw black line */
1385      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);      cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1386      cairo_set_line_width (cr, 2);      cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1387      cairo_move_to (cr, 2, 2*font_size/3);      cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1388      cairo_rel_line_to (cr, 0,  2*font_size/3);      cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1389      cairo_rel_line_to (cr, width_metric, 0);      cairo_rel_line_to (cr, width_metric, 0);
1390      cairo_rel_line_to (cr, 0, -2*font_size/3);      cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1391        cairo_stroke(cr);
1392        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1393        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1394        cairo_rel_line_to (cr, width_imp, 0);
1395        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1396      cairo_stroke(cr);      cairo_stroke(cr);
   
     /* xyz */  
1397    
1398      cairo_destroy(cr);      cairo_destroy(cr);
1399  }  }
1400    #endif
1401    
1402  static void  static void
1403  osd_render(osm_gps_map_osd_t *osd)  osd_render_controls(osm_gps_map_osd_t *osd)
1404  {  {
1405      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1406    
1407        if(priv->controls.rendered
1408    #ifdef OSD_GPS_BUTTON
1409           && (priv->controls.gps_enabled == (osd->cb != NULL))
1410    #endif
1411           )
1412            return;
1413    
1414    #ifdef OSD_GPS_BUTTON
1415        priv->controls.gps_enabled = (osd->cb != NULL);
1416    #endif
1417        priv->controls.rendered = TRUE;
1418    
1419  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1420      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1421      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 817  osd_render(osm_gps_map_osd_t *osd) Line 1423  osd_render(osm_gps_map_osd_t *osd)
1423  #endif  #endif
1424    
1425      /* first fill with transparency */      /* first fill with transparency */
1426      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1427      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1428      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);      cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1429      cairo_paint(cr);      cairo_paint(cr);
# Line 888  osd_render(osm_gps_map_osd_t *osd) Line 1494  osd_render(osm_gps_map_osd_t *osd)
1494      cairo_stroke(cr);      cairo_stroke(cr);
1495    
1496      cairo_destroy(cr);      cairo_destroy(cr);
1497    }
1498    
1499    static void
1500    osd_render(osm_gps_map_osd_t *osd)
1501    {
1502        /* this function is actually called pretty often since the */
1503        /* OSD contents may have changed (due to a coordinate/zoom change). */
1504        /* The different OSD parts have to make sure that they don't */
1505        /* render unneccessarily often and thus waste CPU power */
1506    
1507        osd_render_controls(osd);
1508    
1509  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1510      osd_render_source_sel(osd);      osd_render_source_sel(osd, FALSE);
1511  #endif  #endif
1512    
1513  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1514      osd_render_scale(osd);      osd_render_scale(osd);
1515  #endif  #endif
1516    
1517    #ifdef OSD_CROSSHAIR
1518        osd_render_crosshair(osd);
1519    #endif
1520    
1521    #ifdef OSD_COORDINATES
1522        osd_render_coordinates(osd);
1523    #endif
1524  }  }
1525    
1526  static void  static void
# Line 905  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1530  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1530    
1531      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1532      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1533      if(!priv->overlay) {      if(!priv->controls.surface) {
1534          /* create overlay ... */          /* create overlay ... */
1535          priv->overlay =          priv->controls.surface =
1536              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1537    
1538            priv->controls.rendered = FALSE;
1539    #ifdef OSD_GPS_BUTTON
1540            priv->controls.gps_enabled = FALSE;
1541    #endif
1542    
1543  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1544          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
1545          priv->map_source =          priv->source_sel.surface =
1546              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1547                                             OSD_S_W+2, OSD_S_H+2);                                             OSD_S_W+2, OSD_S_H+2);
1548            priv->source_sel.rendered = FALSE;
1549  #endif  #endif
1550    
1551  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1552          priv->scale =          priv->scale.surface =
1553              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1554                                         OSD_SCALE_W+2, OSD_SCALE_H+2);                                         OSD_SCALE_W, OSD_SCALE_H);
1555            priv->scale.zoom = -1;
1556    #endif
1557    
1558    #ifdef OSD_CROSSHAIR
1559            priv->crosshair.surface =
1560                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1561                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1562            priv->crosshair.rendered = FALSE;
1563    #endif
1564    
1565    #ifdef OSD_COORDINATES
1566            priv->coordinates.surface =
1567                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1568                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1569    
1570            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1571  #endif  #endif
1572    
1573          /* ... and render it */          /* ... and render it */
# Line 930  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1577  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1577      // now draw this onto the original context      // now draw this onto the original context
1578      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1579    
1580      int x = OSD_X, y = OSD_Y;      gint x, y;
     if(OSD_X < 0)  
         x = osd->widget->allocation.width - OSD_W + OSD_X;  
1581    
1582      if(OSD_Y < 0)  #ifdef OSD_SCALE
1583          y = osd->widget->allocation.height - OSD_H + OSD_Y;      x =  OSD_X;
1584        y = -OSD_Y;
1585        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1586        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1587    
1588      cairo_set_source_surface(cr, priv->overlay, x, y);      cairo_set_source_surface(cr, priv->scale.surface, x, y);
1589        cairo_paint(cr);
1590    #endif
1591    
1592    #ifdef OSD_CROSSHAIR
1593        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1594        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1595    
1596        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1597        cairo_paint(cr);
1598    #endif
1599    
1600    #ifdef OSD_COORDINATES
1601        x = -OSD_X;
1602        y = -OSD_Y;
1603        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1604        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1605    
1606        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1607        cairo_paint(cr);
1608    #endif
1609    
1610    #ifdef OSD_BALLOON
1611        if(priv->balloon.surface) {
1612    
1613            /* convert given lat lon into screen coordinates */
1614            gint x, y;
1615            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1616                                          priv->balloon.lat, priv->balloon.lon,
1617                                          &x, &y);
1618    
1619            /* check if balloon needs to be rerendered */
1620            osd_render_balloon(osd);
1621    
1622            cairo_set_source_surface(cr, priv->balloon.surface,
1623                                     x + priv->balloon.offset_x,
1624                                     y + priv->balloon.offset_y);
1625            cairo_paint(cr);
1626        }
1627    #endif
1628    
1629        x = OSD_X;
1630        if(x < 0)
1631            x += osd->widget->allocation.width - OSD_W;
1632    
1633        y = OSD_Y;
1634        if(y < 0)
1635            y += osd->widget->allocation.height - OSD_H;
1636    
1637        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1638      cairo_paint(cr);      cairo_paint(cr);
1639    
1640  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1641      if(!priv->handler_id) {      if(!priv->source_sel.handler_id) {
1642          /* the OSD source selection is not being animated */          /* the OSD source selection is not being animated */
1643          if(!priv->expanded)          if(!priv->source_sel.expanded)
1644              x = osd->widget->allocation.width - OSD_S_W;              x = osd->widget->allocation.width - OSD_S_W;
1645          else          else
1646              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1647      } else      } else
1648          x = priv->shift;          x = priv->source_sel.shift;
1649    
1650      y = OSD_S_Y;      y = OSD_S_Y;
1651      if(OSD_S_Y < 0) {      if(OSD_S_Y < 0) {
1652          if(!priv->expanded)          if(!priv->source_sel.expanded)
1653              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1654          else          else
1655              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1656      }      }
1657    
1658      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);  
1659      cairo_paint(cr);      cairo_paint(cr);
1660  #endif  #endif
1661    
# Line 980  osd_free(osm_gps_map_osd_t *osd) Line 1667  osd_free(osm_gps_map_osd_t *osd)
1667  {  {
1668      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1669    
1670      if (priv->overlay)      if (priv->controls.surface)
1671           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
1672    
1673  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1674      if(priv->handler_id)      if(priv->source_sel.handler_id)
1675          gtk_timeout_remove(priv->handler_id);          gtk_timeout_remove(priv->source_sel.handler_id);
1676    
1677      if (priv->map_source)      if (priv->source_sel.surface)
1678           cairo_surface_destroy(priv->map_source);           cairo_surface_destroy(priv->source_sel.surface);
1679  #endif  #endif
1680    
1681  #ifdef OSD_SCALE  #ifdef OSD_SCALE
1682      if (priv->scale)      if (priv->scale.surface)
1683           cairo_surface_destroy(priv->scale);           cairo_surface_destroy(priv->scale.surface);
1684    #endif
1685    
1686    #ifdef OSD_CROSSHAIR
1687        if (priv->crosshair.surface)
1688             cairo_surface_destroy(priv->crosshair.surface);
1689    #endif
1690    
1691    #ifdef OSD_COORDINATES
1692        if (priv->coordinates.surface)
1693             cairo_surface_destroy(priv->coordinates.surface);
1694    #endif
1695    
1696    #ifdef OSD_BALLOON
1697        if (priv->balloon.surface)
1698             cairo_surface_destroy(priv->balloon.surface);
1699  #endif  #endif
1700    
1701      g_free(priv);      g_free(priv);
# Line 1004  osd_busy(osm_gps_map_osd_t *osd) Line 1706  osd_busy(osm_gps_map_osd_t *osd)
1706  {  {
1707  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1708      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1709      return (priv->handler_id != 0);      return (priv->source_sel.handler_id != 0);
1710  #else  #else
1711      return FALSE;      return FALSE;
1712  #endif  #endif
# Line 1031  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1733  osm_gps_map_osd_classic_init(OsmGpsMap *
1733  {  {
1734      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);      osd_priv_t *priv = osd_classic.priv = g_new0(osd_priv_t, 1);
1735    
1736    #ifdef OSD_BALLOON
1737        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1738        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1739    #endif
1740    
1741      osd_classic.priv = priv;      osd_classic.priv = priv;
1742    
1743      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
# Line 1060  osm_gps_map_osd_check(OsmGpsMap *map, gi Line 1767  osm_gps_map_osd_check(OsmGpsMap *map, gi
1767      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1768      g_return_val_if_fail (osd, OSD_NONE);      g_return_val_if_fail (osd, OSD_NONE);
1769    
1770      return osd_check(osd, x, y);      return osd_check(osd, TRUE, x, y);
1771  }  }
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