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

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revision 87 by harbaum, Mon Aug 31 12:01:28 2009 UTC revision 113 by harbaum, Wed Sep 16 13:45:10 2009 UTC
# Line 32  Line 32 
32  #include <cairo.h>  #include <cairo.h>
33    
34  #include "osm-gps-map.h"  #include "osm-gps-map.h"
35    #include "converter.h"
36  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
37    
38  //the osd controls  //the osd controls
39  typedef struct {  typedef struct {
40      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
41      cairo_surface_t *overlay;      struct {
42            cairo_surface_t *surface;
43            gboolean rendered;
44    #ifdef OSD_GPS_BUTTON
45            gboolean gps_enabled;
46    #endif
47        } controls;
48    
49      /* values to handle the "source" menu */  #ifdef OSD_BALLOON
50      cairo_surface_t *map_source;      //a balloon with additional info
51      gboolean expanded;      struct {
52      gint shift, dir, count;          cairo_surface_t *surface;
53      gint handler_id;          int orientation, offset_x, offset_y;
54      gint width, height;  
55            float lat, lon;
56            OsmGpsMapRect_t rect;
57    
58            /* function called to have the user app draw the contents */
59            OsmGpsMapBalloonCallback cb;
60            gpointer data;
61        } balloon;
62    #endif
63    
64    #ifdef OSD_SCALE
65        struct {
66            cairo_surface_t *surface;
67            int zoom;
68        } scale;
69    #endif
70    
71    #ifdef OSD_CROSSHAIR
72        struct {
73            cairo_surface_t *surface;
74            gboolean rendered;
75        } crosshair;
76    #endif
77    
78    #ifdef OSD_COORDINATES
79        struct {
80            cairo_surface_t *surface;
81            float lat, lon;
82        } coordinates;
83    #endif
84    
85    #ifdef OSD_SOURCE_SEL
86        struct {
87            /* values to handle the "source" menu */
88            cairo_surface_t *surface;
89            gboolean expanded;
90            gint shift, dir, count;
91            gint handler_id;
92            gint width, height;
93            gboolean rendered;
94        } source_sel;
95    #endif
96    
97  } osd_priv_t;  } osd_priv_t;
98    
99    #ifdef OSD_BALLOON
100    /* most visual effects are hardcoded by now, but may be made */
101    /* available via properties later */
102    #ifndef BALLOON_AREA_WIDTH
103    #define BALLOON_AREA_WIDTH           290
104    #endif
105    #ifndef BALLOON_AREA_HEIGHT
106    #define BALLOON_AREA_HEIGHT           75
107    #endif
108    #ifndef BALLOON_CORNER_RADIUS
109    #define BALLOON_CORNER_RADIUS         10
110    #endif
111    
112    #define BALLOON_BORDER               (BALLOON_CORNER_RADIUS/2)
113    #define BALLOON_WIDTH                (BALLOON_AREA_WIDTH + 2 * BALLOON_BORDER)
114    #define BALLOON_HEIGHT               (BALLOON_AREA_HEIGHT + 2 * BALLOON_BORDER)
115    #define BALLOON_TRANSPARENCY         0.8
116    #define POINTER_HEIGHT                20
117    #define POINTER_FOOT_WIDTH            20
118    #define POINTER_OFFSET               (BALLOON_CORNER_RADIUS*3/4)
119    #define BALLOON_SHADOW               (BALLOON_CORNER_RADIUS/2)
120    #define BALLOON_SHADOW_TRANSPARENCY  0.2
121    
122    #define BALLOON_W  (BALLOON_WIDTH + BALLOON_SHADOW)
123    #define BALLOON_H  (BALLOON_HEIGHT + POINTER_HEIGHT + BALLOON_SHADOW)
124    
125    #define CLOSE_BUTTON_RADIUS   (BALLOON_CORNER_RADIUS)
126    
127    
128    /* draw the bubble shape. this is used twice, once for the shape and once */
129    /* for the shadow */
130    static void
131    osm_gps_map_draw_balloon_shape (cairo_t *cr, int x0, int y0, int x1, int y1,
132           gboolean bottom, int px, int py, int px0, int px1) {
133    
134        cairo_move_to (cr, x0, y0 + BALLOON_CORNER_RADIUS);
135        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
136                   BALLOON_CORNER_RADIUS, -M_PI, -M_PI/2);
137        if(!bottom) {
138            /* insert top pointer */
139            cairo_line_to (cr, px1, y0);
140            cairo_line_to (cr, px, py);
141            cairo_line_to (cr, px0, y0);
142        }
143    
144        cairo_line_to (cr, x1 - BALLOON_CORNER_RADIUS, y0);
145        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y0 + BALLOON_CORNER_RADIUS,
146                   BALLOON_CORNER_RADIUS, -M_PI/2, 0);
147        cairo_line_to (cr, x1 , y1 - BALLOON_CORNER_RADIUS);
148        cairo_arc (cr, x1 - BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
149                   BALLOON_CORNER_RADIUS, 0, M_PI/2);
150        if(bottom) {
151            /* insert bottom pointer */
152            cairo_line_to (cr, px0, y1);
153            cairo_line_to (cr, px, py);
154            cairo_line_to (cr, px1, y1);
155        }
156    
157        cairo_line_to (cr, x0 + BALLOON_CORNER_RADIUS, y1);
158        cairo_arc (cr, x0 + BALLOON_CORNER_RADIUS, y1 - BALLOON_CORNER_RADIUS,
159                   BALLOON_CORNER_RADIUS, M_PI/2, M_PI);
160    
161        cairo_close_path (cr);
162    }
163    
164    static void
165    osd_render_balloon(osm_gps_map_osd_t *osd) {
166        osd_priv_t *priv = (osd_priv_t*)osd->priv;
167    
168        /* get zoom */
169        gint zoom;
170        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
171    
172        /* ------- convert given coordinate into screen position --------- */
173        gint xs, ys;
174        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
175                                          priv->balloon.lat, priv->balloon.lon,
176                                          &xs, &ys);
177    
178        gint x0 = 1, y0 = 1;
179    
180        /* check position of this relative to screen center to determine */
181        /* pointer direction ... */
182        int pointer_x, pointer_x0, pointer_x1;
183        int pointer_y;
184    
185        /* ... and calculate position */
186        int orientation = 0;
187        if(xs > osd->widget->allocation.width/2) {
188            priv->balloon.offset_x = -BALLOON_WIDTH + POINTER_OFFSET;
189            pointer_x = x0 - priv->balloon.offset_x;
190            pointer_x0 = pointer_x - (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
191            pointer_x1 = pointer_x0 - POINTER_FOOT_WIDTH;
192            orientation |= 1;
193        } else {
194            priv->balloon.offset_x = -POINTER_OFFSET;
195            pointer_x = x0 - priv->balloon.offset_x;
196            pointer_x1 = pointer_x + (BALLOON_CORNER_RADIUS - POINTER_OFFSET);
197            pointer_x0 = pointer_x1 + POINTER_FOOT_WIDTH;
198        }
199    
200        gboolean bottom = FALSE;
201        if(ys > osd->widget->allocation.height/2) {
202            priv->balloon.offset_y = -BALLOON_HEIGHT - POINTER_HEIGHT;
203            pointer_y = y0 - priv->balloon.offset_y;
204            bottom = TRUE;
205            orientation |= 2;
206        } else {
207            priv->balloon.offset_y = 0;
208            pointer_y = y0 - priv->balloon.offset_y;
209            y0 += POINTER_HEIGHT;
210        }
211    
212        /* if required orientation equals current one, then don't render */
213        /* anything */
214        if(orientation == priv->balloon.orientation)
215            return;
216    
217        priv->balloon.orientation = orientation;
218    
219        /* calculate bottom/right of box */
220        int x1 = x0 + BALLOON_WIDTH, y1 = y0 + BALLOON_HEIGHT;
221    
222        /* save balloon screen coordinates for later use */
223        priv->balloon.rect.x = x0 + BALLOON_BORDER;
224        priv->balloon.rect.y = y0 + BALLOON_BORDER;
225        priv->balloon.rect.w = x1 - x0 - 2*BALLOON_BORDER;
226        priv->balloon.rect.h = y1 - y0 - 2*BALLOON_BORDER;
227    
228        cairo_t *cr = cairo_create(priv->balloon.surface);
229        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
230        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
231        cairo_paint(cr);
232        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
233    
234        /* --------- draw shadow --------------- */
235        osm_gps_map_draw_balloon_shape (cr,
236                     x0 + BALLOON_SHADOW, y0 + BALLOON_SHADOW,
237                     x1 + BALLOON_SHADOW, y1 + BALLOON_SHADOW,
238                     bottom, pointer_x, pointer_y,
239                     pointer_x0 + BALLOON_SHADOW, pointer_x1 + BALLOON_SHADOW);
240    
241        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_SHADOW_TRANSPARENCY);
242        cairo_fill_preserve (cr);
243        cairo_set_source_rgba (cr, 1, 0, 0, 1.0);
244        cairo_set_line_width (cr, 0);
245        cairo_stroke (cr);
246    
247        /* --------- draw main shape ----------- */
248        osm_gps_map_draw_balloon_shape (cr, x0, y0, x1, y1,
249                     bottom, pointer_x, pointer_y, pointer_x0, pointer_x1);
250    
251        cairo_set_source_rgba (cr, 1, 1, 1, BALLOON_TRANSPARENCY);
252        cairo_fill_preserve (cr);
253        cairo_set_source_rgba (cr, 0, 0, 0, BALLOON_TRANSPARENCY);
254        cairo_set_line_width (cr, 1);
255        cairo_stroke (cr);
256    
257        if (priv->balloon.cb) {
258            /* clip in case application tries to draw in */
259                /* exceed of the balloon */
260            cairo_rectangle (cr, priv->balloon.rect.x, priv->balloon.rect.y,
261                             priv->balloon.rect.w, priv->balloon.rect.h);
262            cairo_clip (cr);
263            cairo_new_path (cr);  /* current path is not
264                                     consumed by cairo_clip() */
265    
266            priv->balloon.cb(cr, &priv->balloon.rect, priv->balloon.data);
267        }
268    
269        cairo_destroy(cr);
270    }
271    
272    /* return true if balloon is being displayed and if */
273    /* the given coordinate is within this balloon */
274    static gboolean
275    osd_balloon_check(osm_gps_map_osd_t *osd, gint x, gint y)
276    {
277        osd_priv_t *priv = (osd_priv_t*)osd->priv;
278    
279        if(!priv->balloon.surface)
280            return FALSE;
281    
282        gint xs, ys;
283        osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
284                                          priv->balloon.lat, priv->balloon.lon,
285                                          &xs, &ys);
286    
287        xs += priv->balloon.rect.x + priv->balloon.offset_x;
288        ys += priv->balloon.rect.y + priv->balloon.offset_y;
289    
290        return (priv->balloon.surface &&
291                (x > xs) && (x < xs + priv->balloon.rect.w) &&
292                (y > ys) && (y < ys + priv->balloon.rect.h));
293    }
294    
295    void osm_gps_map_osd_clear_balloon (OsmGpsMap *map) {
296        g_return_if_fail (OSM_IS_GPS_MAP (map));
297    
298        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
299        g_return_if_fail (osd);
300    
301        osd_priv_t *priv = (osd_priv_t*)osd->priv;
302        g_return_if_fail (priv);
303    
304        printf("request to clear balloon\n");
305    
306        if(priv->balloon.surface) {
307            cairo_surface_destroy(priv->balloon.surface);
308            priv->balloon.surface = NULL;
309            priv->balloon.lat = OSM_GPS_MAP_INVALID;
310            priv->balloon.lon = OSM_GPS_MAP_INVALID;
311        }
312        osm_gps_map_redraw(map);
313    }
314    
315    void
316    osm_gps_map_osd_draw_balloon (OsmGpsMap *map, float latitude, float longitude,
317                                  OsmGpsMapBalloonCallback cb, gpointer data) {
318        g_return_if_fail (OSM_IS_GPS_MAP (map));
319    
320        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
321        g_return_if_fail (osd);
322    
323        osd_priv_t *priv = (osd_priv_t*)osd->priv;
324        g_return_if_fail (priv);
325    
326        osm_gps_map_osd_clear_balloon (map);
327    
328        printf("request to draw balloon at %f %f\n", latitude, longitude);
329    
330        /* allocate balloon surface */
331        priv->balloon.surface =
332            cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
333                                       BALLOON_W+2, BALLOON_H+2);
334    
335        priv->balloon.lat = latitude;
336        priv->balloon.lon = longitude;
337        priv->balloon.cb = cb;
338        priv->balloon.data = data;
339    
340        priv->balloon.orientation = -1;
341    
342        osd_render_balloon(osd);
343    
344        osm_gps_map_redraw(map);
345    }
346    
347    #endif // OSD_BALLOON
348    
349  /* position and extent of bounding box */  /* position and extent of bounding box */
350  #ifndef OSD_X  #ifndef OSD_X
351  #define OSD_X      (10)  #define OSD_X      (10)
# Line 258  osd_check_zoom(gint x, gint y) { Line 556  osd_check_zoom(gint x, gint y) {
556      return OSD_NONE;      return OSD_NONE;
557  }  }
558    
559    #ifdef OSD_SOURCE_SEL
560    
561  /* place source selection at right border */  /* place source selection at right border */
562  #define OSD_S_RAD (Z_RAD)  #define OSD_S_RAD (Z_RAD)
563  #define OSD_S_X   (-OSD_X)  #define OSD_S_X   (-OSD_X)
# Line 268  osd_check_zoom(gint x, gint y) { Line 568  osd_check_zoom(gint x, gint y) {
568  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
569    
570  /* size of usable area when expanded */  /* size of usable area when expanded */
571  #define OSD_S_AREA_W (priv->width)  #define OSD_S_AREA_W (priv->source_sel.width)
572  #define OSD_S_AREA_H (priv->height)  #define OSD_S_AREA_H (priv->source_sel.height)
573  #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)
574  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
575    
# Line 281  osd_check_zoom(gint x, gint y) { Line 581  osd_check_zoom(gint x, gint y) {
581  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)  #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
582  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)  #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
583    
584    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
585    /* or the entire menu incl. the puller (expanded) */
586  static void  static void
587  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) {
588      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
589          /* just draw the puller */          /* just draw the puller */
590          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);          cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
591          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 311  osd_source_content(osm_gps_map_osd_t *os Line 613  osd_source_content(osm_gps_map_osd_t *os
613    
614      int py = offset + OSD_S_RAD - OSD_S_D0;      int py = offset + OSD_S_RAD - OSD_S_D0;
615    
616      if(!priv->expanded) {      if(!priv->source_sel.expanded) {
617          /* draw the "puller" open (<) arrow */          /* draw the "puller" open (<) arrow */
618          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);
619          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
# Line 336  osd_source_content(osm_gps_map_osd_t *os Line 638  osd_source_content(osm_gps_map_osd_t *os
638                                      CAIRO_FONT_WEIGHT_BOLD);                                      CAIRO_FONT_WEIGHT_BOLD);
639              cairo_set_font_size (cr, OSD_FONT_SIZE);              cairo_set_font_size (cr, OSD_FONT_SIZE);
640    
641              int i, step = (priv->height - 2*OSD_TEXT_BORDER)              int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
642                  / OSM_GPS_MAP_SOURCE_LAST;                  OSM_GPS_MAP_SOURCE_LAST;
643              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++) {
644                  cairo_text_extents_t extents;                  cairo_text_extents_t extents;
645                  const char *src = osm_gps_map_source_get_friendly_name(i);                  const char *src = osm_gps_map_source_get_friendly_name(i);
# Line 350  osd_source_content(osm_gps_map_osd_t *os Line 652  osd_source_content(osm_gps_map_osd_t *os
652                  if(source == i) {                  if(source == i) {
653                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,                      cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
654                                      y - OSD_TEXT_SKIP,                                      y - OSD_TEXT_SKIP,
655                                      priv->width - OSD_TEXT_BORDER,                                      priv->source_sel.width - OSD_TEXT_BORDER,
656                                      step + OSD_TEXT_SKIP);                                      step + OSD_TEXT_SKIP);
657                      cairo_fill(cr);                      cairo_fill(cr);
658    
# Line 381  osd_source_content(osm_gps_map_osd_t *os Line 683  osd_source_content(osm_gps_map_osd_t *os
683  }  }
684    
685  static void  static void
686  osd_render_source_sel(osm_gps_map_osd_t *osd) {  osd_render_source_sel(osm_gps_map_osd_t *osd, gboolean force_rerender) {
687      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
688    
689        if(priv->source_sel.rendered && !force_rerender)
690            return;
691    
692        priv->source_sel.rendered = TRUE;
693    
694  #ifndef OSD_COLOR  #ifndef OSD_COLOR
695      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
696      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 391  osd_render_source_sel(osm_gps_map_osd_t Line 698  osd_render_source_sel(osm_gps_map_osd_t
698  #endif  #endif
699    
700      /* draw source selector */      /* draw source selector */
701      cairo_t *cr = cairo_create(priv->map_source);      cairo_t *cr = cairo_create(priv->source_sel.surface);
702      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
703      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);
704      cairo_paint(cr);      cairo_paint(cr);
# Line 425  osd_render_source_sel(osm_gps_map_osd_t Line 732  osd_render_source_sel(osm_gps_map_osd_t
732      cairo_destroy(cr);      cairo_destroy(cr);
733  }  }
734    
735    /* re-allocate the buffer used to draw the menu. This is used */
736    /* to collapse/expand the buffer */
737  static void  static void
738  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
739      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
740    
741      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
742      g_assert (priv->map_source);      g_assert (priv->source_sel.surface);
743    
744      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
745      if(priv->expanded) {      if(priv->source_sel.expanded) {
         /* ... and right of it the waypoint id */  
746          cairo_text_extents_t extents;          cairo_text_extents_t extents;
747    
748          /* determine content size */          /* determine content size */
749          cairo_t *cr = cairo_create(priv->map_source);          cairo_t *cr = cairo_create(priv->source_sel.surface);
750          cairo_select_font_face (cr, "Sans",          cairo_select_font_face (cr, "Sans",
751                                  CAIRO_FONT_SLANT_NORMAL,                                  CAIRO_FONT_SLANT_NORMAL,
752                                  CAIRO_FONT_WEIGHT_BOLD);                                  CAIRO_FONT_WEIGHT_BOLD);
# Line 450  osd_source_reallocate(osm_gps_map_osd_t Line 758  osd_source_reallocate(osm_gps_map_osd_t
758              const char *src = osm_gps_map_source_get_friendly_name(i);              const char *src = osm_gps_map_source_get_friendly_name(i);
759              cairo_text_extents (cr, src, &extents);              cairo_text_extents (cr, src, &extents);
760    
             //            printf("Source %d: %s = %f %f\n", i, src,  
             //                   extents.width, extents.height);  
   
761              if(extents.width > max_w) max_w = extents.width;              if(extents.width > max_w) max_w = extents.width;
762              if(extents.height > max_h) max_h = extents.height;              if(extents.height > max_h) max_h = extents.height;
763          }          }
764          cairo_destroy(cr);          cairo_destroy(cr);
765    
766          priv->width  = max_w + 2*OSD_TEXT_BORDER;          priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
767          priv->height = OSM_GPS_MAP_SOURCE_LAST *          priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
768              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;              (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
769    
770          w = OSD_S_EXP_W;          w = OSD_S_EXP_W;
771          h = OSD_S_EXP_H;          h = OSD_S_EXP_H;
772      }      }
773    
774      cairo_surface_destroy(priv->map_source);      cairo_surface_destroy(priv->source_sel.surface);
775      priv->map_source =      priv->source_sel.surface =
776          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
777    
778      osd_render_source_sel(osd);      osd_render_source_sel(osd, TRUE);
   
779  }  }
780    
781  #define OSD_HZ      15  #define OSD_HZ      15
# Line 482  static gboolean osd_source_animate(gpoin Line 786  static gboolean osd_source_animate(gpoin
786      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
787      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;      int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
788      gboolean done = FALSE;      gboolean done = FALSE;
789      priv->count += priv->dir;      priv->source_sel.count += priv->source_sel.dir;
790    
791      /* shifting in */      /* shifting in */
792      if(priv->dir < 0) {      if(priv->source_sel.dir < 0) {
793          if(priv->count <= 0) {          if(priv->source_sel.count <= 0) {
794              priv->count = 0;              priv->source_sel.count = 0;
795              done = TRUE;              done = TRUE;
796          }          }
797      } else {      } else {
798          if(priv->count >= 1000) {          if(priv->source_sel.count >= 1000) {
799              priv->expanded = FALSE;              priv->source_sel.expanded = FALSE;
800              osd_source_reallocate(osd);              osd_source_reallocate(osd);
801    
802              priv->count = 1000;              priv->source_sel.count = 1000;
803              done = TRUE;              done = TRUE;
804          }          }
805      }      }
# Line 503  static gboolean osd_source_animate(gpoin Line 807  static gboolean osd_source_animate(gpoin
807    
808      /* 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 */
809    
810      /* simple linear mapping */      /* nice sinoid mapping */
811      //    priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +      float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
812      //        (diff * priv->count)/1000;      priv->source_sel.shift =
813            (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
     /* nicer sinoid mapping */  
     float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;  
     priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +  
814          m * diff;          m * diff;
815    
816        /* make sure the screen is updated */
817      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));      osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
818    
819        /* stop animation if done */
820      if(done)      if(done)
821          priv->handler_id = 0;          priv->source_sel.handler_id = 0;
822    
823      return !done;      return !done;
824  }  }
# Line 527  osd_source_toggle(osm_gps_map_osd_t *osd Line 830  osd_source_toggle(osm_gps_map_osd_t *osd
830      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
831    
832      /* ignore clicks while animation is running */      /* ignore clicks while animation is running */
833      if(priv->handler_id)      if(priv->source_sel.handler_id)
834          return;          return;
835    
836      /* expand immediately, collapse is handle at the end of the collapse animation */      /* expand immediately, collapse is handle at the end of the */
837      if(!priv->expanded) {      /* collapse animation */
838          priv->expanded = TRUE;      if(!priv->source_sel.expanded) {
839            priv->source_sel.expanded = TRUE;
840          osd_source_reallocate(osd);          osd_source_reallocate(osd);
841    
842          priv->count = 1000;          priv->source_sel.count = 1000;
843          priv->shift = osd->widget->allocation.width - OSD_S_W;          priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
844          priv->dir = -1000/OSD_HZ;          priv->source_sel.dir = -1000/OSD_HZ;
845      } else {      } else {
846          priv->count =  0;          priv->source_sel.count =  0;
847          priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;          priv->source_sel.shift = osd->widget->allocation.width -
848          priv->dir = +1000/OSD_HZ;              OSD_S_EXP_W + OSD_S_X;
849            priv->source_sel.dir = +1000/OSD_HZ;
850      }      }
851    
852      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      /* start timer to handle animation */
853        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ,
854                                                      osd_source_animate, osd);
855  }  }
856    
857    /* check if the user clicked inside the source selection area */
858  static osd_button_t  static osd_button_t
859  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
860      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
861    
862      if(!priv->expanded)      if(!priv->source_sel.expanded)
863          x -= osd->widget->allocation.width - OSD_S_W;          x -= osd->widget->allocation.width - OSD_S_W;
864      else      else
865          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 573  osd_source_check(osm_gps_map_osd_t *osd, Line 881  osd_source_check(osm_gps_map_osd_t *osd,
881              return OSD_BG;              return OSD_BG;
882          }          }
883      }      }
884    
885        /* check for clicks into data area */
886        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
887            /* re-adjust from puller top to content top */
888            if(OSD_S_Y < 0)
889                y += OSD_S_EXP_H - OSD_S_PH;
890    
891            if(x > OSD_S_PW &&
892               x < OSD_S_PW + OSD_S_EXP_W &&
893               y > 0 &&
894               y < OSD_S_EXP_H) {
895    
896                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
897                    / OSM_GPS_MAP_SOURCE_LAST;
898    
899                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
900                y /= step;
901                y += 1;
902    
903                gint old = 0;
904                g_object_get(osd->widget, "map-source", &old, NULL);
905    
906                if(y > OSM_GPS_MAP_SOURCE_NULL &&
907                   y <= OSM_GPS_MAP_SOURCE_LAST &&
908                   old != y) {
909                    g_object_set(osd->widget, "map-source", y, NULL);
910    
911                    osd_render_source_sel(osd, TRUE);
912                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
913                }
914    
915                /* return "clicked in OSD background" to prevent further */
916                /* processing by application */
917                return OSD_BG;
918            }
919        }
920    
921      return OSD_NONE;      return OSD_NONE;
922  }  }
923    #endif // OSD_SOURCE_SEL
924    
925  static osd_button_t  static osd_button_t
926  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
927      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
928    
929    #ifdef OSD_BALLOON
930        /* check if user clicked into balloon */
931        if(osd_balloon_check(osd, x, y))
932            return OSD_BG;
933    #endif
934    
935  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
936      /* the source selection area is handles internally */      /* the source selection area is handles internally */
937      but = osd_source_check(osd, x, y);      but = osd_source_check(osd, x, y);
# Line 680  osd_zoom_labels(cairo_t *cr, gint x, gin Line 1032  osd_zoom_labels(cairo_t *cr, gint x, gin
1032      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
1033  }  }
1034    
1035    #ifdef OSD_COORDINATES
1036    
1037    #ifndef OSD_COORDINATES_FONT_SIZE
1038    #define OSD_COORDINATES_FONT_SIZE 12
1039    #endif
1040    
1041    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
1042    
1043    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
1044    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
1045    
1046    /* these can be overwritten with versions that support */
1047    /* localization */
1048    #ifndef OSD_COORDINATES_CHR_N
1049    #define OSD_COORDINATES_CHR_N  "N"
1050    #endif
1051    #ifndef OSD_COORDINATES_CHR_S
1052    #define OSD_COORDINATES_CHR_S  "S"
1053    #endif
1054    #ifndef OSD_COORDINATES_CHR_E
1055    #define OSD_COORDINATES_CHR_E  "E"
1056    #endif
1057    #ifndef OSD_COORDINATES_CHR_W
1058    #define OSD_COORDINATES_CHR_W  "W"
1059    #endif
1060    
1061    
1062    
1063    /* this is the classic geocaching notation */
1064    static char
1065    *osd_latitude_str(float latitude) {
1066        char *c = OSD_COORDINATES_CHR_N;
1067        float integral, fractional;
1068    
1069        if(isnan(latitude))
1070            return NULL;
1071    
1072        if(latitude < 0) {
1073            latitude = fabs(latitude);
1074            c = OSD_COORDINATES_CHR_S;
1075        }
1076    
1077        fractional = modff(latitude, &integral);
1078    
1079        return g_strdup_printf("%s %02d° %06.3f'",
1080                               c, (int)integral, fractional*60.0);
1081    }
1082    
1083    static char
1084    *osd_longitude_str(float longitude) {
1085        char *c = OSD_COORDINATES_CHR_E;
1086        float integral, fractional;
1087    
1088        if(isnan(longitude))
1089            return NULL;
1090    
1091        if(longitude < 0) {
1092            longitude = fabs(longitude);
1093            c = OSD_COORDINATES_CHR_W;
1094        }
1095    
1096        fractional = modff(longitude, &integral);
1097    
1098        return g_strdup_printf("%s %03d° %06.3f'",
1099                               c, (int)integral, fractional*60.0);
1100    }
1101    
1102    static void
1103    osd_render_coordinates(osm_gps_map_osd_t *osd)
1104    {
1105        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1106    
1107        /* get current map position */
1108        gfloat lat, lon;
1109        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
1110    
1111        /* check if position has changed enough to require redraw */
1112        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
1113            /* 1/60000 == 1/1000 minute */
1114            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
1115               (fabsf(lon - priv->coordinates.lon) < 1/60000))
1116                return;
1117    
1118        priv->coordinates.lat = lat;
1119        priv->coordinates.lon = lon;
1120    
1121        /* first fill with transparency */
1122        cairo_t *cr = cairo_create(priv->coordinates.surface);
1123        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1124        //    cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
1125        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1126        cairo_paint(cr);
1127        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1128    
1129        cairo_select_font_face (cr, "Sans",
1130                                CAIRO_FONT_SLANT_NORMAL,
1131                                CAIRO_FONT_WEIGHT_BOLD);
1132        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
1133    
1134        char *latitude = osd_latitude_str(lat);
1135        char *longitude = osd_longitude_str(lon);
1136    
1137        cairo_text_extents_t lat_extents, lon_extents;
1138        cairo_text_extents (cr, latitude, &lat_extents);
1139        cairo_text_extents (cr, longitude, &lon_extents);
1140    
1141        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1142        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
1143        cairo_move_to (cr,
1144                       (OSD_COORDINATES_W - lat_extents.width)/2,
1145                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1146        cairo_text_path (cr, latitude);
1147        cairo_move_to (cr,
1148                       (OSD_COORDINATES_W - lon_extents.width)/2,
1149                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1150                       OSD_COORDINATES_FONT_SIZE);
1151        cairo_text_path (cr, longitude);
1152        cairo_stroke (cr);
1153    
1154        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1155        cairo_move_to (cr,
1156                       (OSD_COORDINATES_W - lat_extents.width)/2,
1157                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
1158        cairo_show_text (cr, latitude);
1159        cairo_move_to (cr,
1160                       (OSD_COORDINATES_W - lon_extents.width)/2,
1161                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
1162                       OSD_COORDINATES_FONT_SIZE);
1163        cairo_show_text (cr, longitude);
1164    
1165        g_free(latitude);
1166        g_free(longitude);
1167    
1168        cairo_destroy(cr);
1169    }
1170    #endif  // OSD_COORDINATES
1171    
1172    #ifdef OSD_CROSSHAIR
1173    
1174    #ifndef OSD_CROSSHAIR_RADIUS
1175    #define OSD_CROSSHAIR_RADIUS 10
1176    #endif
1177    
1178    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
1179    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
1180    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1181    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
1182    
1183    static void
1184    osd_render_crosshair_shape(cairo_t *cr) {
1185        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
1186                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
1187    
1188        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
1189                       OSD_CROSSHAIR_H/2);
1190        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
1191        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
1192                       OSD_CROSSHAIR_H/2);
1193        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
1194    
1195        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1196                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
1197        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
1198        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
1199                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
1200        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
1201    
1202        cairo_stroke (cr);
1203    }
1204    
1205  static void  static void
1206  osd_render(osm_gps_map_osd_t *osd) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
1207    {
1208        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1209    
1210        if(priv->crosshair.rendered)
1211            return;
1212    
1213        priv->crosshair.rendered = TRUE;
1214    
1215        /* first fill with transparency */
1216        cairo_t *cr = cairo_create(priv->crosshair.surface);
1217        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1218        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
1219        cairo_paint(cr);
1220        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1221    
1222        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1223    
1224        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
1225        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
1226        osd_render_crosshair_shape(cr);
1227    
1228        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
1229        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
1230        osd_render_crosshair_shape(cr);
1231    
1232        cairo_destroy(cr);
1233    }
1234    #endif
1235    
1236    #ifdef OSD_SCALE
1237    
1238    #ifndef OSD_SCALE_FONT_SIZE
1239    #define OSD_SCALE_FONT_SIZE 12
1240    #endif
1241    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
1242    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
1243    
1244    /* various parameters used to create the scale */
1245    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
1246    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
1247    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
1248    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
1249    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
1250    
1251    static void
1252    osd_render_scale(osm_gps_map_osd_t *osd)
1253    {
1254        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1255    
1256        /* this only needs to be rendered if the zoom has changed */
1257        gint zoom;
1258        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
1259        if(zoom == priv->scale.zoom)
1260            return;
1261    
1262        priv->scale.zoom = zoom;
1263    
1264        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
1265    
1266        /* first fill with transparency */
1267        cairo_t *cr = cairo_create(priv->scale.surface);
1268        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1269        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1270        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
1271        cairo_paint(cr);
1272        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1273    
1274        /* determine the size of the scale width in meters */
1275        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
1276    
1277        /* scale this to useful values */
1278        int exp = logf(width)*M_LOG10E;
1279        int mant = width/pow(10,exp);
1280        int width_metric = mant * pow(10,exp);
1281        char *dist_str = NULL;
1282        if(width_metric<1000)
1283            dist_str = g_strdup_printf("%u m", width_metric);
1284        else
1285            dist_str = g_strdup_printf("%u km", width_metric/1000);
1286        width_metric /= m_per_pix;
1287    
1288        /* and now the hard part: scale for useful imperial values :-( */
1289        /* try to convert to feet, 1ft == 0.3048 m */
1290        width /= 0.3048;
1291        float imp_scale = 0.3048;
1292        char *dist_imp_unit = "ft";
1293    
1294        if(width >= 100) {
1295            /* 1yd == 3 feet */
1296            width /= 3.0;
1297            imp_scale *= 3.0;
1298            dist_imp_unit = "yd";
1299    
1300            if(width >= 1760.0) {
1301                /* 1mi == 1760 yd */
1302                width /= 1760.0;
1303                imp_scale *= 1760.0;
1304                dist_imp_unit = "mi";
1305            }
1306        }
1307    
1308        /* also convert this to full tens/hundreds */
1309        exp = logf(width)*M_LOG10E;
1310        mant = width/pow(10,exp);
1311        int width_imp = mant * pow(10,exp);
1312        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1313    
1314        /* convert back to pixels */
1315        width_imp *= imp_scale;
1316        width_imp /= m_per_pix;
1317    
1318        cairo_select_font_face (cr, "Sans",
1319                                CAIRO_FONT_SLANT_NORMAL,
1320                                CAIRO_FONT_WEIGHT_BOLD);
1321        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1322        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1323    
1324        cairo_text_extents_t extents;
1325        cairo_text_extents (cr, dist_str, &extents);
1326    
1327        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1328        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1329        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1330        cairo_text_path (cr, dist_str);
1331        cairo_stroke (cr);
1332        cairo_move_to (cr, 2*OSD_SCALE_FD,
1333                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1334        cairo_text_path (cr, dist_str_imp);
1335        cairo_stroke (cr);
1336    
1337        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1338        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1339        cairo_show_text (cr, dist_str);
1340        cairo_move_to (cr, 2*OSD_SCALE_FD,
1341                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1342        cairo_show_text (cr, dist_str_imp);
1343    
1344        g_free(dist_str);
1345        g_free(dist_str_imp);
1346    
1347        /* draw white line */
1348        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1349        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1350        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1351        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1352        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1353        cairo_rel_line_to (cr, width_metric, 0);
1354        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1355        cairo_stroke(cr);
1356        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1357        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1358        cairo_rel_line_to (cr, width_imp, 0);
1359        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1360        cairo_stroke(cr);
1361    
1362        /* draw black line */
1363        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1364        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1365        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1366        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1367        cairo_rel_line_to (cr, width_metric, 0);
1368        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1369        cairo_stroke(cr);
1370        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1371        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1372        cairo_rel_line_to (cr, width_imp, 0);
1373        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1374        cairo_stroke(cr);
1375    
1376        cairo_destroy(cr);
1377    }
1378    #endif
1379    
1380    static void
1381    osd_render_controls(osm_gps_map_osd_t *osd)
1382    {
1383      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1384    
1385        if(priv->controls.rendered
1386    #ifdef OSD_GPS_BUTTON
1387           && (priv->controls.gps_enabled == (osd->cb != NULL))
1388    #endif
1389           )
1390            return;
1391    
1392    #ifdef OSD_GPS_BUTTON
1393        priv->controls.gps_enabled = (osd->cb != NULL);
1394    #endif
1395        priv->controls.rendered = TRUE;
1396    
1397  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1398      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];      GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1399      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];      GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
# Line 691  osd_render(osm_gps_map_osd_t *osd) { Line 1401  osd_render(osm_gps_map_osd_t *osd) {
1401  #endif  #endif
1402    
1403      /* first fill with transparency */      /* first fill with transparency */
1404      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1405      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1406      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);
1407      cairo_paint(cr);      cairo_paint(cr);
# Line 762  osd_render(osm_gps_map_osd_t *osd) { Line 1472  osd_render(osm_gps_map_osd_t *osd) {
1472      cairo_stroke(cr);      cairo_stroke(cr);
1473    
1474      cairo_destroy(cr);      cairo_destroy(cr);
1475    }
1476    
1477    static void
1478    osd_render(osm_gps_map_osd_t *osd)
1479    {
1480        /* this function is actually called pretty often since the */
1481        /* OSD contents may have changed (due to a coordinate/zoom change). */
1482        /* The different OSD parts have to make sure that they don't */
1483        /* render unneccessarily often and thus waste CPU power */
1484    
1485        osd_render_controls(osd);
1486    
1487      osd_render_source_sel(osd);  #ifdef OSD_SOURCE_SEL
1488        osd_render_source_sel(osd, FALSE);
1489    #endif
1490    
1491    #ifdef OSD_SCALE
1492        osd_render_scale(osd);
1493    #endif
1494    
1495    #ifdef OSD_CROSSHAIR
1496        osd_render_crosshair(osd);
1497    #endif
1498    
1499    #ifdef OSD_COORDINATES
1500        osd_render_coordinates(osd);
1501    #endif
1502  }  }
1503    
1504  static void  static void
# Line 773  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1508  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1508    
1509      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1510      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1511      if(!priv->overlay) {      if(!priv->controls.surface) {
1512          /* create overlay ... */          /* create overlay ... */
1513          priv->overlay =          priv->controls.surface =
1514              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);
1515    
1516            priv->controls.rendered = FALSE;
1517    #ifdef OSD_GPS_BUTTON
1518            priv->controls.gps_enabled = FALSE;
1519    #endif
1520    
1521    #ifdef OSD_SOURCE_SEL
1522          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
1523          priv->map_source =          priv->source_sel.surface =
1524              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1525                                             OSD_S_W+2, OSD_S_H+2);                                             OSD_S_W+2, OSD_S_H+2);
1526            priv->source_sel.rendered = FALSE;
1527    #endif
1528    
1529    #ifdef OSD_SCALE
1530            priv->scale.surface =
1531                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1532                                           OSD_SCALE_W, OSD_SCALE_H);
1533            priv->scale.zoom = -1;
1534    #endif
1535    
1536    #ifdef OSD_CROSSHAIR
1537            priv->crosshair.surface =
1538                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1539                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1540            priv->crosshair.rendered = FALSE;
1541    #endif
1542    
1543    #ifdef OSD_COORDINATES
1544            priv->coordinates.surface =
1545                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1546                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1547    
1548            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1549    #endif
1550    
1551          /* ... and render it */          /* ... and render it */
1552          osd_render(osd);          osd_render(osd);
# Line 790  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1555  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1555      // now draw this onto the original context      // now draw this onto the original context
1556      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1557    
1558      int x = OSD_X, y = OSD_Y;      gint x, y;
     if(OSD_X < 0)  
         x = osd->widget->allocation.width - OSD_W + OSD_X;  
1559    
1560      if(OSD_Y < 0)  #ifdef OSD_SCALE
1561          y = osd->widget->allocation.height - OSD_H + OSD_Y;      x =  OSD_X;
1562        y = -OSD_Y;
1563        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1564        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1565    
1566        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1567        cairo_paint(cr);
1568    #endif
1569    
1570    #ifdef OSD_CROSSHAIR
1571        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1572        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1573    
1574        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1575        cairo_paint(cr);
1576    #endif
1577    
1578    #ifdef OSD_COORDINATES
1579        x = -OSD_X;
1580        y = -OSD_Y;
1581        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1582        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1583    
1584        cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1585        cairo_paint(cr);
1586    #endif
1587    
1588    #ifdef OSD_BALLOON
1589        if(priv->balloon.surface) {
1590    
1591            /* convert given lat lon into screen coordinates */
1592            gint x, y;
1593            osm_gps_map_geographic_to_screen (OSM_GPS_MAP(osd->widget),
1594                                          priv->balloon.lat, priv->balloon.lon,
1595                                          &x, &y);
1596    
1597            /* check if balloon needs to be rerendered */
1598            osd_render_balloon(osd);
1599    
1600            cairo_set_source_surface(cr, priv->balloon.surface,
1601                                     x + priv->balloon.offset_x,
1602                                     y + priv->balloon.offset_y);
1603            cairo_paint(cr);
1604        }
1605    #endif
1606    
1607        x = OSD_X;
1608        if(x < 0)
1609            x += osd->widget->allocation.width - OSD_W;
1610    
1611        y = OSD_Y;
1612        if(y < 0)
1613            y += osd->widget->allocation.height - OSD_H;
1614    
1615      cairo_set_source_surface(cr, priv->overlay, x, y);      cairo_set_source_surface(cr, priv->controls.surface, x, y);
1616      cairo_paint(cr);      cairo_paint(cr);
1617    
1618  #ifdef OSD_SOURCE_SEL  #ifdef OSD_SOURCE_SEL
1619      if(!priv->handler_id) {      if(!priv->source_sel.handler_id) {
1620          /* the OSD source selection is not being animated */          /* the OSD source selection is not being animated */
1621          if(!priv->expanded)          if(!priv->source_sel.expanded)
1622              x = osd->widget->allocation.width - OSD_S_W;              x = osd->widget->allocation.width - OSD_S_W;
1623          else          else
1624              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1625      } else      } else
1626          x = priv->shift;          x = priv->source_sel.shift;
1627    
1628      y = OSD_S_Y;      y = OSD_S_Y;
1629      if(OSD_S_Y < 0) {      if(OSD_S_Y < 0) {
1630          if(!priv->expanded)          if(!priv->source_sel.expanded)
1631              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1632          else          else
1633              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;              y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1634      }      }
1635    
1636      cairo_set_source_surface(cr, priv->map_source, x, y);      cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1637      cairo_paint(cr);      cairo_paint(cr);
1638  #endif  #endif
1639    
# Line 830  osd_free(osm_gps_map_osd_t *osd) Line 1645  osd_free(osm_gps_map_osd_t *osd)
1645  {  {
1646      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1647    
1648      if(priv->handler_id)      if (priv->controls.surface)
1649          gtk_timeout_remove(priv->handler_id);           cairo_surface_destroy(priv->controls.surface);
1650    
1651      if (priv->overlay)  #ifdef OSD_SOURCE_SEL
1652           cairo_surface_destroy(priv->overlay);      if(priv->source_sel.handler_id)
1653            gtk_timeout_remove(priv->source_sel.handler_id);
1654    
1655      if (priv->map_source)      if (priv->source_sel.surface)
1656           cairo_surface_destroy(priv->map_source);           cairo_surface_destroy(priv->source_sel.surface);
1657    #endif
1658    
1659    #ifdef OSD_SCALE
1660        if (priv->scale.surface)
1661             cairo_surface_destroy(priv->scale.surface);
1662    #endif
1663    
1664    #ifdef OSD_CROSSHAIR
1665        if (priv->crosshair.surface)
1666             cairo_surface_destroy(priv->crosshair.surface);
1667    #endif
1668    
1669    #ifdef OSD_COORDINATES
1670        if (priv->coordinates.surface)
1671             cairo_surface_destroy(priv->coordinates.surface);
1672    #endif
1673    
1674    #ifdef OSD_BALLOON
1675        if (priv->balloon.surface)
1676             cairo_surface_destroy(priv->balloon.surface);
1677    #endif
1678    
1679      g_free(priv);      g_free(priv);
1680  }  }
1681    
 /* this is the only function that's externally visible */  
1682  static gboolean  static gboolean
1683  osd_busy(osm_gps_map_osd_t *osd)  osd_busy(osm_gps_map_osd_t *osd)
1684  {  {
1685    #ifdef OSD_SOURCE_SEL
1686      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1687      return (priv->handler_id != 0);      return (priv->source_sel.handler_id != 0);
1688    #else
1689        return FALSE;
1690    #endif
1691  }  }
1692    
1693  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1694        .widget     = NULL,
1695    
1696      .draw       = osd_draw,      .draw       = osd_draw,
1697      .check      = osd_check,      .check      = osd_check,
1698      .render     = osd_render,      .render     = osd_render,
# Line 869  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1711  osm_gps_map_osd_classic_init(OsmGpsMap *
1711  {  {
1712      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);
1713    
1714    #ifdef OSD_BALLOON
1715        priv->balloon.lat = OSM_GPS_MAP_INVALID;
1716        priv->balloon.lon = OSM_GPS_MAP_INVALID;
1717    #endif
1718    
1719      osd_classic.priv = priv;      osd_classic.priv = priv;
1720    
1721      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
Legend:
Removed from v.87  
changed lines
  Added in v.113