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

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revision 73 by harbaum, Sun Aug 23 19:38:15 2009 UTC revision 100 by harbaum, Tue Sep 8 10:24:11 2009 UTC
# Line 19  Line 19 
19    
20  #include "config.h"  #include "config.h"
21  #include <stdlib.h>  // abs  #include <stdlib.h>  // abs
22  #include <math.h>    // M_PI  #include <math.h>    // M_PI/cos()
23    
24  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
25  /* OSM_GPS_MAP_OSD_DIAMETER */  /* OSD_DIAMETER */
26    /* OSD_X, OSD_Y */
27    
28    #define OSD_SCALE
29    
30    #define OSD_SCALE_W  120
31    #define OSD_SCALE_H   20
32    
33  #ifndef USE_CAIRO  #ifndef USE_CAIRO
34  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
# Line 35  Line 41 
41    
42  //the osd controls  //the osd controls
43  typedef struct {  typedef struct {
44      GdkPixmap *backup;      /* the offscreen representation of the OSD */
     gint backup_x, backup_y;  
45      cairo_surface_t *overlay;      cairo_surface_t *overlay;
46    
47    #ifdef OSD_SCALE
48        cairo_surface_t *scale;
49    #endif
50    
51    #ifdef OSD_SOURCE_SEL
52        /* values to handle the "source" menu */
53        cairo_surface_t *map_source;
54        gboolean expanded;
55        gint shift, dir, count;
56        gint handler_id;
57        gint width, height;
58    #endif
59    
60  } osd_priv_t;  } osd_priv_t;
61    
62  /* position and extent of bounding box */  /* position and extent of bounding box */
63    #ifndef OSD_X
64  #define OSD_X      (10)  #define OSD_X      (10)
65  #define OSD_Y      (10)  #endif
66    
67  #define OSD_COLOR            0.5, 0.5, 1  #ifndef OSD_Y
68  #define OSD_COLOR_DISABLED   0.8, 0.8, 0.8  #define OSD_Y      (10)
69    #endif
70    
71  /* parameters of the direction shape */  /* parameters of the direction shape */
72  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
73  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
74  #else  #else
75  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
76  #endif  #endif
77  #define D_TIP  (4*D_RAD/5)  // distance of arrow tip from dpad center  #define D_TIP  (4*D_RAD/5)  // distance of arrow tip from dpad center
78  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 61  typedef struct { Line 82  typedef struct {
82  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom
83  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar
84    
85    #ifdef OSD_SHADOW_ENABLE
86  /* shadow also depends on control size */  /* shadow also depends on control size */
87  #define OSD_SHADOW (D_RAD/6)  #define OSD_SHADOW (D_RAD/6)
88    #else
89    #define OSD_SHADOW (0)
90    #endif
91    
92    /* normally the GPS button is in the center of the dpad. if there's */
93    /* no dpad it will go into the zoom area */
94    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
95    #define Z_GPS  1
96    #else
97    #define Z_GPS  0
98    #endif
99    
100  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
101  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
102    #if !Z_GPS
103  #define OSD_H    (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW)  #define OSD_H    (2*D_RAD + Z_STEP + 2*Z_RAD + OSD_SHADOW)
104    #else
105    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
106    #endif
107    
108    #ifdef OSD_SHADOW_ENABLE
109  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
110    #endif
111    
112    #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
113    
 #define Z_TOP    (2 * D_RAD + Z_STEP)  
114  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
115  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
116  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
117  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
118    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
119    
120  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
121  static void  static void
122  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
123  {  {
124      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
125      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 88  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 128  osm_gps_map_osd_zoom_shape(cairo_t *cr,
128      cairo_arc     (cr, x+Z_LEFT,    y+Z_MID, Z_RAD,  M_PI/2, -M_PI/2);      cairo_arc     (cr, x+Z_LEFT,    y+Z_MID, Z_RAD,  M_PI/2, -M_PI/2);
129  }  }
130    
131    /* ------------------- color/shadow functions ----------------- */
132    
133    #ifndef OSD_COLOR
134    /* if no color has been specified we just use the gdks default colors */
135    static void
136    osd_labels(cairo_t *cr, gint width, gboolean enabled,
137                           GdkColor *fg, GdkColor *disabled) {
138        if(enabled)  gdk_cairo_set_source_color(cr, fg);
139        else         gdk_cairo_set_source_color(cr, disabled);
140        cairo_set_line_width (cr, width);
141    }
142    #else
143    static void
144    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
145        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
146        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
147        cairo_set_line_width (cr, width);
148    }
149    #endif
150    
151    #ifdef OSD_SHADOW_ENABLE
152    static void
153    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
154        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
155        cairo_set_line_width (cr, width);
156    }
157    #endif
158    
159    #ifndef OSD_NO_DPAD
160  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
161  static void  static void
162  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
163  {  {
164      cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI);      cairo_arc (cr, x+D_RAD, y+D_RAD, D_RAD, 0, 2 * M_PI);
165  }  }
166    #endif
167    
168    #ifdef OSD_SHADOW_ENABLE
169    static void
170    osd_shape_shadow(cairo_t *cr) {
171        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
172        cairo_fill (cr);
173        cairo_stroke (cr);
174    }
175    #endif
176    
177    #ifndef OSD_COLOR
178    /* if no color has been specified we just use the gdks default colors */
179    static void
180    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
181        gdk_cairo_set_source_color(cr, bg);
182        cairo_fill_preserve (cr);
183        gdk_cairo_set_source_color(cr, fg);
184        cairo_set_line_width (cr, 1);
185        cairo_stroke (cr);
186    }
187    #else
188    static void
189    osd_shape(cairo_t *cr) {
190        cairo_set_source_rgb (cr, OSD_COLOR_BG);
191        cairo_fill_preserve (cr);
192        cairo_set_source_rgb (cr, OSD_COLOR);
193        cairo_set_line_width (cr, 1);
194        cairo_stroke (cr);
195    }
196    #endif
197    
198    
199  static gboolean  static gboolean
200  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)  osm_gps_map_in_circle(gint x, gint y, gint cx, gint cy, gint rad)
# Line 101  osm_gps_map_in_circle(gint x, gint y, gi Line 202  osm_gps_map_in_circle(gint x, gint y, gi
202      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
203  }  }
204    
205    #ifndef OSD_NO_DPAD
206  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
207  static osd_button_t  static osd_button_t
208  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
209  {  {
210      /* within entire dpad circle */      /* within entire dpad circle */
211      if( osm_gps_map_in_circle(x, y, OSD_X + D_RAD, OSD_Y + D_RAD, D_RAD))      if( osm_gps_map_in_circle(x, y, D_RAD, D_RAD, D_RAD))
212      {      {
213          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
214          x -= (OSD_X + D_RAD);          x -= D_RAD;
215          y -= (OSD_Y + D_RAD);          y -= D_RAD;
216    
217    #ifdef OSD_GPS_BUTTON
218          /* check for dpad center goes here! */          /* check for dpad center goes here! */
219          if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3))          if( osm_gps_map_in_circle(x, y, 0, 0, D_RAD/3))
220              return OSD_GPS;              return OSD_GPS;
221    #endif
222    
223          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
224              return OSD_UP;              return OSD_UP;
# Line 132  osm_gps_map_osd_check_dpad(gint x, gint Line 236  osm_gps_map_osd_check_dpad(gint x, gint
236      }      }
237      return OSD_NONE;      return OSD_NONE;
238  }  }
239    #endif
240    
241  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
242  static osd_button_t  static osd_button_t
243  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
244      if( x > OSD_X && x < (OSD_X + OSD_W) && y > Z_TOP && y < (OSD_Y+Z_BOT)) {      if( x > 0 && x < OSD_W && y > Z_TOP && y < Z_BOT) {
245    
246          /* within circle around (-) label */          /* within circle around (-) label */
247          if( osm_gps_map_in_circle(x, y, OSD_X + Z_LEFT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_LEFT, Z_MID, Z_RAD))
             return OSD_OUT;  
   
         /* between center of (-) button and center of entire zoom control area */  
         if(x > OSD_LEFT && x < OSD_X + D_RAD)  
248              return OSD_OUT;              return OSD_OUT;
249    
250          /* within circle around (+) label */          /* within circle around (+) label */
251          if( osm_gps_map_in_circle(x, y, OSD_X + Z_RIGHT, OSD_Y + Z_MID, Z_RAD))          if( osm_gps_map_in_circle(x, y, Z_RIGHT, Z_MID, Z_RAD))
252              return OSD_IN;              return OSD_IN;
253    
254    #if Z_GPS == 1
255            /* within square around center */
256            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
257                return OSD_GPS;
258    #endif
259    
260            /* between center of (-) button and center of entire zoom control area */
261            if(x > OSD_LEFT && x < D_RAD)
262                return OSD_OUT;
263    
264          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
265          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
266              return OSD_IN;              return OSD_IN;
267      }      }
268    
269      return OSD_NONE;      return OSD_NONE;
270  }  }
271    
272    #ifdef OSD_SOURCE_SEL
273    
274    /* place source selection at right border */
275    #define OSD_S_RAD (Z_RAD)
276    #define OSD_S_X   (-OSD_X)
277    #define OSD_S_Y   (OSD_Y)
278    #define OSD_S_PW  (2 * Z_RAD)
279    #define OSD_S_W   (OSD_S_PW)
280    #define OSD_S_PH  (2 * Z_RAD)
281    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
282    
283    /* size of usable area when expanded */
284    #define OSD_S_AREA_W (priv->width)
285    #define OSD_S_AREA_H (priv->height)
286    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
287    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
288    
289    /* internal value to draw the arrow on the "puller" */
290    #define OSD_S_D0  (OSD_S_RAD/2)
291    #ifndef OSD_FONT_SIZE
292    #define OSD_FONT_SIZE 16.0
293    #endif
294    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
295    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
296    
297    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
298    /* or the entire menu incl. the puller (expanded) */
299    static void
300    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
301        if(!priv->expanded) {
302            /* just draw the puller */
303            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
304            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
305            cairo_line_to (cr, x + OSD_S_PW, y);
306        } else {
307            /* draw the puller and the area itself */
308            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
309            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
310            if(OSD_S_Y > 0) {
311                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
312                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
313            } else {
314                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
315                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
316                cairo_line_to (cr, x + OSD_S_PW, y);
317            }
318            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
319            cairo_close_path (cr);
320        }
321    }
322    
323    static void
324    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
325        osd_priv_t *priv = (osd_priv_t*)osd->priv;
326    
327        int py = offset + OSD_S_RAD - OSD_S_D0;
328    
329        if(!priv->expanded) {
330            /* draw the "puller" open (<) arrow */
331            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
332            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
333            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
334        } else {
335            if(OSD_S_Y < 0)
336                py += OSD_S_AREA_H - OSD_S_PH;
337    
338            /* draw the "puller" close (>) arrow */
339            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
340            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
341            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
342            cairo_stroke(cr);
343    
344            /* don't draw a shadow for the text content */
345            if(offset == 1) {
346                gint source;
347                g_object_get(osd->widget, "map-source", &source, NULL);
348    
349                cairo_select_font_face (cr, "Sans",
350                                        CAIRO_FONT_SLANT_NORMAL,
351                                        CAIRO_FONT_WEIGHT_BOLD);
352                cairo_set_font_size (cr, OSD_FONT_SIZE);
353    
354                int i, step = (priv->height - 2*OSD_TEXT_BORDER) /
355                    OSM_GPS_MAP_SOURCE_LAST;
356                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
357                    cairo_text_extents_t extents;
358                    const char *src = osm_gps_map_source_get_friendly_name(i);
359                    cairo_text_extents (cr, src, &extents);
360    
361                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
362                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
363    
364                    /* draw filled rectangle if selected */
365                    if(source == i) {
366                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
367                                        y - OSD_TEXT_SKIP,
368                                        priv->width - OSD_TEXT_BORDER,
369                                        step + OSD_TEXT_SKIP);
370                        cairo_fill(cr);
371    
372                        /* temprarily draw with background color */
373    #ifndef OSD_COLOR
374                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
375                        gdk_cairo_set_source_color(cr, &bg);
376    #else
377                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
378    #endif
379                    }
380    
381                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
382                    cairo_show_text (cr, src);
383    
384                    /* restore color */
385                    if(source == i) {
386    #ifndef OSD_COLOR
387                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
388                        gdk_cairo_set_source_color(cr, &fg);
389    #else
390                        cairo_set_source_rgb (cr, OSD_COLOR);
391    #endif
392                    }
393                }
394            }
395        }
396    }
397    
398    static void
399    osd_render_source_sel(osm_gps_map_osd_t *osd) {
400        osd_priv_t *priv = (osd_priv_t*)osd->priv;
401    
402    #ifndef OSD_COLOR
403        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
404        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
405        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
406    #endif
407    
408        /* draw source selector */
409        cairo_t *cr = cairo_create(priv->map_source);
410        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
411        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
412        cairo_paint(cr);
413        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
414    
415    #ifdef OSD_SHADOW_ENABLE
416        osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
417        osd_shape_shadow(cr);
418    #endif
419    
420        osd_source_shape(priv, cr, 1, 1);
421    #ifndef OSD_COLOR
422        osd_shape(cr, &bg, &fg);
423    #else
424        osd_shape(cr);
425    #endif
426    
427    #ifdef OSD_SHADOW_ENABLE
428        osd_labels_shadow(cr, Z_RAD/3, TRUE);
429        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
430        cairo_stroke (cr);
431    #endif
432    #ifndef OSD_COLOR
433        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
434    #else
435        osd_labels(cr, Z_RAD/3, TRUE);
436    #endif
437        osd_source_content(osd, cr, 1);
438        cairo_stroke (cr);
439    
440        cairo_destroy(cr);
441    }
442    
443    /* re-allocate the buffer used to draw the menu. This is used */
444    /* to collapse/expand the buffer */
445    static void
446    osd_source_reallocate(osm_gps_map_osd_t *osd) {
447        osd_priv_t *priv = (osd_priv_t*)osd->priv;
448    
449        /* re-allocate offscreen bitmap */
450        g_assert (priv->map_source);
451    
452        int w = OSD_S_W, h = OSD_S_H;
453        if(priv->expanded) {
454            cairo_text_extents_t extents;
455    
456            /* determine content size */
457            cairo_t *cr = cairo_create(priv->map_source);
458            cairo_select_font_face (cr, "Sans",
459                                    CAIRO_FONT_SLANT_NORMAL,
460                                    CAIRO_FONT_WEIGHT_BOLD);
461            cairo_set_font_size (cr, OSD_FONT_SIZE);
462    
463            /* calculate menu size */
464            int i, max_h = 0, max_w = 0;
465            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
466                const char *src = osm_gps_map_source_get_friendly_name(i);
467                cairo_text_extents (cr, src, &extents);
468    
469                if(extents.width > max_w) max_w = extents.width;
470                if(extents.height > max_h) max_h = extents.height;
471            }
472            cairo_destroy(cr);
473    
474            priv->width  = max_w + 2*OSD_TEXT_BORDER;
475            priv->height = OSM_GPS_MAP_SOURCE_LAST *
476                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
477    
478            w = OSD_S_EXP_W;
479            h = OSD_S_EXP_H;
480        }
481    
482        cairo_surface_destroy(priv->map_source);
483        priv->map_source =
484            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
485    
486        osd_render_source_sel(osd);
487    }
488    
489    #define OSD_HZ      15
490    #define OSD_TIME    500
491    
492    static gboolean osd_source_animate(gpointer data) {
493        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
494        osd_priv_t *priv = (osd_priv_t*)osd->priv;
495        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
496        gboolean done = FALSE;
497        priv->count += priv->dir;
498    
499        /* shifting in */
500        if(priv->dir < 0) {
501            if(priv->count <= 0) {
502                priv->count = 0;
503                done = TRUE;
504            }
505        } else {
506            if(priv->count >= 1000) {
507                priv->expanded = FALSE;
508                osd_source_reallocate(osd);
509    
510                priv->count = 1000;
511                done = TRUE;
512            }
513        }
514    
515    
516        /* count runs linearly from 0 to 1000, map this nicely onto a position */
517    
518        /* nicer sinoid mapping */
519        float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;
520        priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
521            m * diff;
522    
523        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
524    
525        if(done)
526            priv->handler_id = 0;
527    
528        return !done;
529    }
530    
531    /* switch between expand and collapse mode of source selection */
532    static void
533    osd_source_toggle(osm_gps_map_osd_t *osd)
534    {
535        osd_priv_t *priv = (osd_priv_t*)osd->priv;
536    
537        /* ignore clicks while animation is running */
538        if(priv->handler_id)
539            return;
540    
541        /* expand immediately, collapse is handle at the end of the collapse animation */
542        if(!priv->expanded) {
543            priv->expanded = TRUE;
544            osd_source_reallocate(osd);
545    
546            priv->count = 1000;
547            priv->shift = osd->widget->allocation.width - OSD_S_W;
548            priv->dir = -1000/OSD_HZ;
549        } else {
550            priv->count =  0;
551            priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
552            priv->dir = +1000/OSD_HZ;
553        }
554    
555        priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);
556    }
557    
558    /* check if the user clicked inside the source selection area */
559    static osd_button_t
560    osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
561        osd_priv_t *priv = (osd_priv_t*)osd->priv;
562    
563        if(!priv->expanded)
564            x -= osd->widget->allocation.width - OSD_S_W;
565        else
566            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
567    
568        if(OSD_S_Y > 0)
569            y -= OSD_S_Y;
570        else
571            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
572    
573        /* within square around puller? */
574        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
575            /* really within puller shape? */
576            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
577                /* expand source selector */
578                osd_source_toggle(osd);
579    
580                /* tell upper layers that user clicked some background element */
581                /* of the OSD */
582                return OSD_BG;
583            }
584        }
585    
586        /* check for clicks into data area */
587        if(priv->expanded && !priv->handler_id) {
588            /* re-adjust from puller top to content top */
589            if(OSD_S_Y < 0)
590                y += OSD_S_EXP_H - OSD_S_PH;
591    
592            if(x > OSD_S_PW &&
593               x < OSD_S_PW + OSD_S_EXP_W &&
594               y > 0 &&
595               y < OSD_S_EXP_H) {
596    
597                int step = (priv->height - 2*OSD_TEXT_BORDER)
598                    / OSM_GPS_MAP_SOURCE_LAST;
599    
600                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
601                y /= step;
602                y += 1;
603    
604                gint old = 0;
605                g_object_get(osd->widget, "map-source", &old, NULL);
606    
607                if(y > OSM_GPS_MAP_SOURCE_NULL &&
608                   y <= OSM_GPS_MAP_SOURCE_LAST &&
609                   old != y) {
610                    g_object_set(osd->widget, "map-source", y, NULL);
611    
612                    osd_render_source_sel(osd);
613                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
614                }
615    
616                /* return "clicked in OSD background" to prevent further */
617                /* processing by application */
618                return OSD_BG;
619            }
620        }
621    
622        return OSD_NONE;
623    }
624    #endif // OSD_SOURCE_SEL
625    
626  static osd_button_t  static osd_button_t
627  osm_gps_map_osd_check(gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
628      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
629    
630    #ifdef OSD_SOURCE_SEL
631        /* the source selection area is handles internally */
632        but = osd_source_check(osd, x, y);
633        if(but != OSD_NONE)
634            return but;
635    #endif
636    
637        x -= OSD_X;
638        y -= OSD_Y;
639    
640        if(OSD_X < 0)
641            x -= (osd->widget->allocation.width - OSD_W);
642    
643        if(OSD_Y < 0)
644            y -= (osd->widget->allocation.height - OSD_H);
645    
646      /* first do a rough test for the OSD area. */      /* first do a rough test for the OSD area. */
647      /* this is just to avoid an unnecessary detailed test */      /* this is just to avoid an unnecessary detailed test */
648      if(x > OSD_X && x < OSD_X + OSD_W &&      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {
649         y > OSD_Y && y < OSD_Y + OSD_H) {  #ifndef OSD_NO_DPAD
650          but = osm_gps_map_osd_check_dpad(x, y);          but = osd_check_dpad(x, y);
651    #endif
652    
653          if(but == OSD_NONE)          if(but == OSD_NONE)
654              but = osm_gps_map_osd_check_zoom(x, y);              but = osd_check_zoom(x, y);
655      }      }
656    
657      return but;      return but;
658  }  }
659    
660  static void  #ifndef OSD_NO_DPAD
 osm_gps_map_osd_shape_shadow(cairo_t *cr) {  
     cairo_set_source_rgba (cr, 0, 0, 0, 0.2);  
     cairo_fill (cr);  
     cairo_stroke (cr);  
 }  
   
 static void  
 osm_gps_map_osd_shape(cairo_t *cr) {  
     cairo_set_source_rgb (cr, 1, 1, 1);  
     cairo_fill_preserve (cr);  
     cairo_set_source_rgb (cr, OSD_COLOR);  
     cairo_set_line_width (cr, 1);  
     cairo_stroke (cr);  
 }  
   
661  static void  static void
662  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
663      /* move reference to dpad center */      /* move reference to dpad center */
664      x += D_RAD;      x += D_RAD;
665      y += D_RAD;      y += D_RAD;
# Line 215  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 682  osm_gps_map_osd_dpad_labels(cairo_t *cr,
682          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);          cairo_rel_line_to (cr, offset[i][2][0], offset[i][2][1]);
683      }      }
684  }  }
685    #endif
686    
687  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
688  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
689    #define GPS_V0  (D_RAD/7)
690  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
691  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
692    
693  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
694    /* this is either drawn in the center of the dpad (if present) */
695    /* or in the middle of the zoom area */
696  static void  static void
697  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
698      /* move reference to dpad center */      /* move reference to dpad center */
699      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
700      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
701    
702      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
703      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
# Line 241  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi Line 712  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
712      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
713      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
714  }  }
715    #endif
716    
717  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
718    
719  static void  static void
720  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
721      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
722      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
723    
# Line 255  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 727  osm_gps_map_osd_zoom_labels(cairo_t *cr,
727      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
728  }  }
729    
730  static void  static char *
731  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  dist_str_metric(int dist)
732      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  {
733      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      if(dist<1000)
734      cairo_set_line_width (cr, width);          return g_strdup_printf("%u m",  dist);
735      cairo_stroke (cr);  
736        return g_strdup_printf("%u km", dist/1000);
737  }  }
738    
739  static void  static void
740  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  osd_render_scale(osm_gps_map_osd_t *osd)
741      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  {
742      cairo_set_line_width (cr, width);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
743        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
744    
745        /* first fill with transparency */
746        cairo_t *cr = cairo_create(priv->scale);
747        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
748        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
749        //    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
750        cairo_paint(cr);
751        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
752    
753        /* determine the size of the scale width in meters */
754        float width = (OSD_SCALE_W-2) * m_per_pix;
755        printf("width = %f meters\n", width);
756    
757        /* scale this to useful values */
758        int exp = logf(width)*M_LOG10E;
759        int mant = width/pow(10,exp);
760        printf("mant = %d, exp = %d \n", mant, exp);
761    
762        int width_metric = mant * pow(10,exp);
763        char *dist_str = dist_str_metric(width_metric);
764        width_metric /= m_per_pix;
765        printf("metric scale width = %d pixels: %s\n", width_metric, dist_str);
766    
767        int font_size = 12;
768    
769        cairo_select_font_face (cr, "Sans",
770                                CAIRO_FONT_SLANT_NORMAL,
771                                CAIRO_FONT_WEIGHT_BOLD);
772        cairo_set_font_size (cr, font_size);
773        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
774    
775        cairo_text_extents_t extents;
776        cairo_text_extents (cr, dist_str, &extents);
777    
778        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
779        cairo_move_to (cr, font_size/3, font_size);
780        cairo_text_path (cr, dist_str);
781        cairo_set_line_width (cr, 2);
782      cairo_stroke (cr);      cairo_stroke (cr);
783    
784        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
785        cairo_move_to (cr, font_size/3, font_size);
786        cairo_show_text (cr, dist_str);
787    
788        /* draw white line */
789        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
790        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
791        cairo_set_line_width (cr, 4);
792        cairo_move_to (cr, 2, 2*font_size/3);
793        cairo_rel_line_to (cr, 0,  2*font_size/3);
794        cairo_rel_line_to (cr, width_metric, 0);
795        cairo_rel_line_to (cr, 0, -2*font_size/3);
796        cairo_stroke(cr);
797    
798        /* draw black line */
799        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
800        cairo_set_line_width (cr, 2);
801        cairo_move_to (cr, 2, 2*font_size/3);
802        cairo_rel_line_to (cr, 0,  2*font_size/3);
803        cairo_rel_line_to (cr, width_metric, 0);
804        cairo_rel_line_to (cr, 0, -2*font_size/3);
805        cairo_stroke(cr);
806    
807        /* xyz */
808    
809        cairo_destroy(cr);
810  }  }
811    
812  static void  static void
813  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render(osm_gps_map_osd_t *osd)
814    {
815      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
816    
817    #ifndef OSD_COLOR
818        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
819        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
820        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
821    #endif
822    
823      /* first fill with transparency */      /* first fill with transparency */
824      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->overlay);
825      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
826      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);
827      cairo_paint(cr);      cairo_paint(cr);
   
828      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
829    
830      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
831      gint x = 0, y = 0;  #ifdef OSD_SHADOW_ENABLE
832        osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
833      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_shape_shadow(cr);
834      osm_gps_map_osd_shape_shadow(cr);  #ifndef OSD_NO_DPAD
835      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
836      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
837    #endif
838    #endif
839    
840      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
841    
842      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
843      osm_gps_map_osd_shape(cr);  #ifndef OSD_COLOR
844      osm_gps_map_osd_dpad_shape(cr, x, y);      osd_shape(cr, &bg, &fg);
845      osm_gps_map_osd_shape(cr);  #else
846        osd_shape(cr);
847    #endif
848    #ifndef OSD_NO_DPAD
849        osd_dpad_shape(cr, 1, 1);
850    #ifndef OSD_COLOR
851        osd_shape(cr, &bg, &fg);
852    #else
853        osd_shape(cr);
854    #endif
855    #endif
856    
857      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
858    
859      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifdef OSD_SHADOW_ENABLE
860      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
861      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
862      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifndef OSD_NO_DPAD
863      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
864    #endif
865      osm_gps_map_osd_zoom_labels(cr, x, y);      cairo_stroke(cr);
866      osm_gps_map_osd_dpad_labels(cr, x, y);  #ifdef OSD_GPS_BUTTON
867      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
868      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
869      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      cairo_stroke(cr);
870    #endif
871    #endif
872    
873    #ifndef OSD_COLOR
874        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
875    #else
876        osd_labels(cr, Z_RAD/3, TRUE);
877    #endif
878        osd_zoom_labels(cr, 1, 1);
879    #ifndef OSD_NO_DPAD
880        osd_dpad_labels(cr, 1, 1);
881    #endif
882        cairo_stroke(cr);
883    
884    #ifndef OSD_COLOR
885        osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
886    #else
887        osd_labels(cr, Z_RAD/6, osd->cb != NULL);
888    #endif
889    #ifdef OSD_GPS_BUTTON
890        osd_dpad_gps(cr, 1, 1);
891    #endif
892        cairo_stroke(cr);
893    
894      cairo_destroy(cr);      cairo_destroy(cr);
895    
896    #ifdef OSD_SOURCE_SEL
897        osd_render_source_sel(osd);
898    #endif
899    
900    #ifdef OSD_SCALE
901        osd_render_scale(osd);
902    #endif
903  }  }
904    
905  static void  static void
906  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset)  osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
907  {  {
908      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
909    
     /* backup previous contents */  
     if(!priv->backup)  
         priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1);  
   
     gint x = OSD_X + xoffset;  
     gint y = OSD_Y + yoffset;  
   
     /* create backup of background */  
     gdk_draw_drawable(priv->backup,  
         osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  
                       osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);  
   
     priv->backup_x = x-1;  
     priv->backup_y = y-1;  
   
910      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
911      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
912      if(!priv->overlay) {      if(!priv->overlay) {
913          /* create overlay ... */          /* create overlay ... */
914          priv->overlay =          priv->overlay =
915              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
916    
917    #ifdef OSD_SOURCE_SEL
918            /* the initial OSD state is alway not-expanded */
919            priv->map_source =
920                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
921                                               OSD_S_W+2, OSD_S_H+2);
922    #endif
923    
924    #ifdef OSD_SCALE
925            priv->scale =
926                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
927                                           OSD_SCALE_W+2, OSD_SCALE_H+2);
928    #endif
929    
930          /* ... and render it */          /* ... and render it */
931          osm_gps_map_osd_render(osd);          osd_render(osd);
932      }      }
933    
934      // now draw this onto the original context      // now draw this onto the original context
935      cairo_t *cr = gdk_cairo_create(osd->pixmap);      cairo_t *cr = gdk_cairo_create(drawable);
936    
937        int x = OSD_X, y = OSD_Y;
938        if(OSD_X < 0)
939            x = osd->widget->allocation.width - OSD_W + OSD_X;
940    
941        if(OSD_Y < 0)
942            y = osd->widget->allocation.height - OSD_H + OSD_Y;
943    
944      cairo_set_source_surface(cr, priv->overlay, x, y);      cairo_set_source_surface(cr, priv->overlay, x, y);
945      cairo_paint(cr);      cairo_paint(cr);
     cairo_destroy(cr);  
 }  
946    
947  static void  #ifdef OSD_SOURCE_SEL
948  osm_gps_map_osd_restore (osm_gps_map_osd_t *osd)      if(!priv->handler_id) {
949  {          /* the OSD source selection is not being animated */
950      osd_priv_t *priv = (osd_priv_t*)osd->priv;          if(!priv->expanded)
951                x = osd->widget->allocation.width - OSD_S_W;
952      /* restore backup of previous contents */          else
953      if(priv->backup) {              x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
954          /* create backup of background */      } else
955          gdk_draw_drawable(osd->pixmap,          x = priv->shift;
956                            osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  
957                            priv->backup, 0, 0,      y = OSD_S_Y;
958                            priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2);      if(OSD_S_Y < 0) {
959            if(!priv->expanded)
960                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
961            else
962                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
963      }      }
964    
965        cairo_set_source_surface(cr, priv->map_source, x, y);
966        cairo_paint(cr);
967    #endif
968    
969    #ifdef OSD_SCALE
970        x =  OSD_X;
971        y = -OSD_Y;
972        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
973        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
974    
975        cairo_set_source_surface(cr, priv->scale, x, y);
976        cairo_paint(cr);
977    #endif
978    
979        cairo_destroy(cr);
980  }  }
981    
982  static void  static void
983  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
984  {  {
985      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
986    
     if (priv->backup)  
         g_object_unref(priv->backup);  
   
987      if (priv->overlay)      if (priv->overlay)
988           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->overlay);
989    
990    #ifdef OSD_SOURCE_SEL
991        if(priv->handler_id)
992            gtk_timeout_remove(priv->handler_id);
993    
994        if (priv->map_source)
995             cairo_surface_destroy(priv->map_source);
996    #endif
997    
998    #ifdef OSD_SCALE
999        if (priv->scale)
1000             cairo_surface_destroy(priv->scale);
1001    #endif
1002    
1003      g_free(priv);      g_free(priv);
1004  }  }
1005    
1006    static gboolean
1007    osd_busy(osm_gps_map_osd_t *osd)
1008    {
1009    #ifdef OSD_SOURCE_SEL
1010        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1011        return (priv->handler_id != 0);
1012    #else
1013        return FALSE;
1014    #endif
1015    }
1016    
1017  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1018      .restore    = osm_gps_map_osd_restore,      .widget     = NULL,
1019      .draw       = osm_gps_map_osd_draw,  
1020      .check      = osm_gps_map_osd_check,      .draw       = osd_draw,
1021      .render     = osm_gps_map_osd_render,      .check      = osd_check,
1022      .free       = osm_gps_map_osd_free,      .render     = osd_render,
1023        .free       = osd_free,
1024        .busy       = osd_busy,
1025    
1026      .cb         = NULL,      .cb         = NULL,
1027      .data       = NULL,      .data       = NULL,
# Line 404  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1040  osm_gps_map_osd_classic_init(OsmGpsMap *
1040      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1041  }  }
1042    
1043    #ifdef OSD_GPS_BUTTON
1044  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  /* below are osd specific functions which aren't used by osm-gps-map */
1045    /* but instead are to be used by the main application */
1046    void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1047                                     gpointer data) {
1048      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1049      g_return_if_fail (osd);      g_return_if_fail (osd);
1050    
1051      osd->cb = cb;      osd->cb = cb;
# Line 419  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1057  void osm_gps_map_osd_enable_gps (OsmGpsM
1057    
1058      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1059  }  }
1060    #endif
1061    
1062    osd_button_t
1063    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1064        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1065        g_return_val_if_fail (osd, OSD_NONE);
1066    
1067        return osd_check(osd, x, y);
1068    }
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