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

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revision 75 by harbaum, Mon Aug 24 12:57:15 2009 UTC revision 108 by harbaum, Fri Sep 11 19:20:55 2009 UTC
# Line 19  Line 19 
19    
20  #include "config.h"  #include "config.h"
21  #include <stdlib.h>  // abs  #include <stdlib.h>  // abs
22  #include <math.h>    // M_PI  #include <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  #ifndef USE_CAIRO  #ifndef USE_CAIRO
29  #error "OSD control display lacks a non-cairo implementation!"  #error "OSD control display lacks a non-cairo implementation!"
# Line 36  Line 37 
37  //the osd controls  //the osd controls
38  typedef struct {  typedef struct {
39      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
40      cairo_surface_t *overlay;      struct {
41            cairo_surface_t *surface;
42            gboolean rendered;
43    #ifdef OSD_GPS_BUTTON
44            gboolean gps_enabled;
45    #endif
46        } controls;
47    
48    #ifdef OSD_SCALE
49        cairo_surface_t *scale;
50        int scale_zoom;
51    #endif
52    
53      GdkColor bg, fg, da;  #ifdef OSD_CROSSHAIR
54        cairo_surface_t *crosshair;
55    #endif
56    
57    #ifdef OSD_COORDINATES
58        cairo_surface_t *coordinates;
59        float coo_lat, coo_lon;
60    #endif
61    
62    #ifdef OSD_SOURCE_SEL
63        /* values to handle the "source" menu */
64        cairo_surface_t *map_source;
65        gboolean expanded;
66        gint shift, dir, count;
67        gint handler_id;
68        gint width, height;
69    #endif
70    
71  } osd_priv_t;  } osd_priv_t;
72    
73  /* position and extent of bounding box */  /* position and extent of bounding box */
74    #ifndef OSD_X
75  #define OSD_X      (10)  #define OSD_X      (10)
76    #endif
77    
78    #ifndef OSD_Y
79  #define OSD_Y      (10)  #define OSD_Y      (10)
80    #endif
81    
82  /* parameters of the direction shape */  /* parameters of the direction shape */
83  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
84  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
85  #else  #else
86  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
87  #endif  #endif
88  #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
89  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 67  typedef struct { Line 100  typedef struct {
100  #define OSD_SHADOW (0)  #define OSD_SHADOW (0)
101  #endif  #endif
102    
103    /* normally the GPS button is in the center of the dpad. if there's */
104    /* no dpad it will go into the zoom area */
105    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
106    #define Z_GPS  1
107    #else
108    #define Z_GPS  0
109    #endif
110    
111  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
112  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
113    #if !Z_GPS
114  #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)
115    #else
116    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
117    #endif
118    
119  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
120  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
121  #endif  #endif
122    
123  #define Z_TOP    (2 * D_RAD + Z_STEP)  #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
124    
125  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
126  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
127  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
128  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
129    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
130    
131  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
132  static void  static void
133  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
134  {  {
135      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
136      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);      cairo_line_to (cr, x+Z_RIGHT,   y+Z_TOP);
# Line 93  osm_gps_map_osd_zoom_shape(cairo_t *cr, Line 139  osm_gps_map_osd_zoom_shape(cairo_t *cr,
139      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);
140  }  }
141    
142    /* ------------------- color/shadow functions ----------------- */
143    
144    #ifndef OSD_COLOR
145    /* if no color has been specified we just use the gdks default colors */
146    static void
147    osd_labels(cairo_t *cr, gint width, gboolean enabled,
148                           GdkColor *fg, GdkColor *disabled) {
149        if(enabled)  gdk_cairo_set_source_color(cr, fg);
150        else         gdk_cairo_set_source_color(cr, disabled);
151        cairo_set_line_width (cr, width);
152    }
153    #else
154    static void
155    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
156        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
157        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
158        cairo_set_line_width (cr, width);
159    }
160    #endif
161    
162    #ifdef OSD_SHADOW_ENABLE
163    static void
164    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
165        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
166        cairo_set_line_width (cr, width);
167    }
168    #endif
169    
170    #ifndef OSD_NO_DPAD
171  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
172  static void  static void
173  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
174  {  {
175      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);
176  }  }
177    #endif
178    
179    #ifdef OSD_SHADOW_ENABLE
180    static void
181    osd_shape_shadow(cairo_t *cr) {
182        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
183        cairo_fill (cr);
184        cairo_stroke (cr);
185    }
186    #endif
187    
188    #ifndef OSD_COLOR
189    /* if no color has been specified we just use the gdks default colors */
190    static void
191    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
192        gdk_cairo_set_source_color(cr, bg);
193        cairo_fill_preserve (cr);
194        gdk_cairo_set_source_color(cr, fg);
195        cairo_set_line_width (cr, 1);
196        cairo_stroke (cr);
197    }
198    #else
199    static void
200    osd_shape(cairo_t *cr) {
201        cairo_set_source_rgb (cr, OSD_COLOR_BG);
202        cairo_fill_preserve (cr);
203        cairo_set_source_rgb (cr, OSD_COLOR);
204        cairo_set_line_width (cr, 1);
205        cairo_stroke (cr);
206    }
207    #endif
208    
209    
210  static gboolean  static gboolean
211  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 106  osm_gps_map_in_circle(gint x, gint y, gi Line 213  osm_gps_map_in_circle(gint x, gint y, gi
213      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
214  }  }
215    
216    #ifndef OSD_NO_DPAD
217  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
218  static osd_button_t  static osd_button_t
219  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
220  {  {
221      /* within entire dpad circle */      /* within entire dpad circle */
222      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))
223      {      {
224          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
225          x -= (OSD_X + D_RAD);          x -= D_RAD;
226          y -= (OSD_Y + D_RAD);          y -= D_RAD;
227    
228    #ifdef OSD_GPS_BUTTON
229          /* check for dpad center goes here! */          /* check for dpad center goes here! */
230          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))
231              return OSD_GPS;              return OSD_GPS;
232    #endif
233    
234          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
235              return OSD_UP;              return OSD_UP;
# Line 137  osm_gps_map_osd_check_dpad(gint x, gint Line 247  osm_gps_map_osd_check_dpad(gint x, gint
247      }      }
248      return OSD_NONE;      return OSD_NONE;
249  }  }
250    #endif
251    
252  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
253  static osd_button_t  static osd_button_t
254  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
255      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) {
256    
257          /* within circle around (-) label */          /* within circle around (-) label */
258          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)  
259              return OSD_OUT;              return OSD_OUT;
260    
261          /* within circle around (+) label */          /* within circle around (+) label */
262          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))
263              return OSD_IN;              return OSD_IN;
264    
265    #if Z_GPS == 1
266            /* within square around center */
267            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
268                return OSD_GPS;
269    #endif
270    
271            /* between center of (-) button and center of entire zoom control area */
272            if(x > OSD_LEFT && x < D_RAD)
273                return OSD_OUT;
274    
275          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
276          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
277              return OSD_IN;              return OSD_IN;
278      }      }
279    
280      return OSD_NONE;      return OSD_NONE;
281  }  }
282    
283  static osd_button_t  #ifdef OSD_SOURCE_SEL
 osm_gps_map_osd_check(gint x, gint y) {  
     osd_button_t but = OSD_NONE;  
284    
285      /* first do a rough test for the OSD area. */  /* place source selection at right border */
286      /* this is just to avoid an unnecessary detailed test */  #define OSD_S_RAD (Z_RAD)
287      if(x > OSD_X && x < OSD_X + OSD_W &&  #define OSD_S_X   (-OSD_X)
288         y > OSD_Y && y < OSD_Y + OSD_H) {  #define OSD_S_Y   (OSD_Y)
289          but = osm_gps_map_osd_check_dpad(x, y);  #define OSD_S_PW  (2 * Z_RAD)
290    #define OSD_S_W   (OSD_S_PW)
291    #define OSD_S_PH  (2 * Z_RAD)
292    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
293    
294    /* size of usable area when expanded */
295    #define OSD_S_AREA_W (priv->width)
296    #define OSD_S_AREA_H (priv->height)
297    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
298    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
299    
300    /* internal value to draw the arrow on the "puller" */
301    #define OSD_S_D0  (OSD_S_RAD/2)
302    #ifndef OSD_FONT_SIZE
303    #define OSD_FONT_SIZE 16.0
304    #endif
305    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
306    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
307    
308          if(but == OSD_NONE)  /* draw the shape of the source selection OSD, either only the puller (not expanded) */
309              but = osm_gps_map_osd_check_zoom(x, y);  /* or the entire menu incl. the puller (expanded) */
310    static void
311    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
312        if(!priv->expanded) {
313            /* just draw the puller */
314            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
315            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
316            cairo_line_to (cr, x + OSD_S_PW, y);
317        } else {
318            /* draw the puller and the area itself */
319            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
320            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
321            if(OSD_S_Y > 0) {
322                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
323                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
324            } else {
325                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
326                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
327                cairo_line_to (cr, x + OSD_S_PW, y);
328            }
329            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
330            cairo_close_path (cr);
331      }      }
332    }
333    
334      return but;  static void
335    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
336        osd_priv_t *priv = (osd_priv_t*)osd->priv;
337    
338        int py = offset + OSD_S_RAD - OSD_S_D0;
339    
340        if(!priv->expanded) {
341            /* draw the "puller" open (<) arrow */
342            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
343            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
344            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
345        } else {
346            if(OSD_S_Y < 0)
347                py += OSD_S_AREA_H - OSD_S_PH;
348    
349            /* draw the "puller" close (>) arrow */
350            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
351            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
352            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
353            cairo_stroke(cr);
354    
355            /* don't draw a shadow for the text content */
356            if(offset == 1) {
357                gint source;
358                g_object_get(osd->widget, "map-source", &source, NULL);
359    
360                cairo_select_font_face (cr, "Sans",
361                                        CAIRO_FONT_SLANT_NORMAL,
362                                        CAIRO_FONT_WEIGHT_BOLD);
363                cairo_set_font_size (cr, OSD_FONT_SIZE);
364    
365                int i, step = (priv->height - 2*OSD_TEXT_BORDER) /
366                    OSM_GPS_MAP_SOURCE_LAST;
367                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
368                    cairo_text_extents_t extents;
369                    const char *src = osm_gps_map_source_get_friendly_name(i);
370                    cairo_text_extents (cr, src, &extents);
371    
372                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
373                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
374    
375                    /* draw filled rectangle if selected */
376                    if(source == i) {
377                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
378                                        y - OSD_TEXT_SKIP,
379                                        priv->width - OSD_TEXT_BORDER,
380                                        step + OSD_TEXT_SKIP);
381                        cairo_fill(cr);
382    
383                        /* temprarily draw with background color */
384    #ifndef OSD_COLOR
385                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
386                        gdk_cairo_set_source_color(cr, &bg);
387    #else
388                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
389    #endif
390                    }
391    
392                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
393                    cairo_show_text (cr, src);
394    
395                    /* restore color */
396                    if(source == i) {
397    #ifndef OSD_COLOR
398                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
399                        gdk_cairo_set_source_color(cr, &fg);
400    #else
401                        cairo_set_source_rgb (cr, OSD_COLOR);
402    #endif
403                    }
404                }
405            }
406        }
407  }  }
408    
409    static void
410    osd_render_source_sel(osm_gps_map_osd_t *osd) {
411        osd_priv_t *priv = (osd_priv_t*)osd->priv;
412    
413    #ifndef OSD_COLOR
414        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
415        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
416        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
417    #endif
418    
419        /* draw source selector */
420        cairo_t *cr = cairo_create(priv->map_source);
421        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
422        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
423        cairo_paint(cr);
424        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
425    
426  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
427  static void      osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
428  osm_gps_map_osd_shape_shadow(cairo_t *cr) {      osd_shape_shadow(cr);
     cairo_set_source_rgba (cr, 0, 0, 0, 0.2);  
     cairo_fill (cr);  
     cairo_stroke (cr);  
 }  
429  #endif  #endif
430    
431        osd_source_shape(priv, cr, 1, 1);
432  #ifndef OSD_COLOR  #ifndef OSD_COLOR
433  /* if no color has been specified we just use the gdks default colors */      osd_shape(cr, &bg, &fg);
434  static void  #else
435  osm_gps_map_osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {      osd_shape(cr);
436      gdk_cairo_set_source_color(cr, bg);  #endif
437      cairo_fill_preserve (cr);  
438      gdk_cairo_set_source_color(cr, fg);  #ifdef OSD_SHADOW_ENABLE
439      cairo_set_line_width (cr, 1);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
440        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
441      cairo_stroke (cr);      cairo_stroke (cr);
442  }  #endif
443    #ifndef OSD_COLOR
444        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
445  #else  #else
446  static void      osd_labels(cr, Z_RAD/3, TRUE);
447  osm_gps_map_osd_shape(cairo_t *cr) {  #endif
448      cairo_set_source_rgb (cr, OSD_COLOR_BG);      osd_source_content(osd, cr, 1);
     cairo_fill_preserve (cr);  
     cairo_set_source_rgb (cr, OSD_COLOR);  
     cairo_set_line_width (cr, 1);  
449      cairo_stroke (cr);      cairo_stroke (cr);
450    
451        cairo_destroy(cr);
452  }  }
453    
454    /* re-allocate the buffer used to draw the menu. This is used */
455    /* to collapse/expand the buffer */
456    static void
457    osd_source_reallocate(osm_gps_map_osd_t *osd) {
458        osd_priv_t *priv = (osd_priv_t*)osd->priv;
459    
460        /* re-allocate offscreen bitmap */
461        g_assert (priv->map_source);
462    
463        int w = OSD_S_W, h = OSD_S_H;
464        if(priv->expanded) {
465            cairo_text_extents_t extents;
466    
467            /* determine content size */
468            cairo_t *cr = cairo_create(priv->map_source);
469            cairo_select_font_face (cr, "Sans",
470                                    CAIRO_FONT_SLANT_NORMAL,
471                                    CAIRO_FONT_WEIGHT_BOLD);
472            cairo_set_font_size (cr, OSD_FONT_SIZE);
473    
474            /* calculate menu size */
475            int i, max_h = 0, max_w = 0;
476            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
477                const char *src = osm_gps_map_source_get_friendly_name(i);
478                cairo_text_extents (cr, src, &extents);
479    
480                if(extents.width > max_w) max_w = extents.width;
481                if(extents.height > max_h) max_h = extents.height;
482            }
483            cairo_destroy(cr);
484    
485            priv->width  = max_w + 2*OSD_TEXT_BORDER;
486            priv->height = OSM_GPS_MAP_SOURCE_LAST *
487                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
488    
489            w = OSD_S_EXP_W;
490            h = OSD_S_EXP_H;
491        }
492    
493        cairo_surface_destroy(priv->map_source);
494        priv->map_source =
495            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
496    
497        osd_render_source_sel(osd);
498    }
499    
500    #define OSD_HZ      15
501    #define OSD_TIME    500
502    
503    static gboolean osd_source_animate(gpointer data) {
504        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
505        osd_priv_t *priv = (osd_priv_t*)osd->priv;
506        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
507        gboolean done = FALSE;
508        priv->count += priv->dir;
509    
510        /* shifting in */
511        if(priv->dir < 0) {
512            if(priv->count <= 0) {
513                priv->count = 0;
514                done = TRUE;
515            }
516        } else {
517            if(priv->count >= 1000) {
518                priv->expanded = FALSE;
519                osd_source_reallocate(osd);
520    
521                priv->count = 1000;
522                done = TRUE;
523            }
524        }
525    
526    
527        /* count runs linearly from 0 to 1000, map this nicely onto a position */
528    
529        /* nicer sinoid mapping */
530        float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;
531        priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
532            m * diff;
533    
534        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
535    
536        if(done)
537            priv->handler_id = 0;
538    
539        return !done;
540    }
541    
542    /* switch between expand and collapse mode of source selection */
543    static void
544    osd_source_toggle(osm_gps_map_osd_t *osd)
545    {
546        osd_priv_t *priv = (osd_priv_t*)osd->priv;
547    
548        /* ignore clicks while animation is running */
549        if(priv->handler_id)
550            return;
551    
552        /* expand immediately, collapse is handle at the end of the collapse animation */
553        if(!priv->expanded) {
554            priv->expanded = TRUE;
555            osd_source_reallocate(osd);
556    
557            priv->count = 1000;
558            priv->shift = osd->widget->allocation.width - OSD_S_W;
559            priv->dir = -1000/OSD_HZ;
560        } else {
561            priv->count =  0;
562            priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
563            priv->dir = +1000/OSD_HZ;
564        }
565    
566        priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);
567    }
568    
569    /* check if the user clicked inside the source selection area */
570    static osd_button_t
571    osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
572        osd_priv_t *priv = (osd_priv_t*)osd->priv;
573    
574        if(!priv->expanded)
575            x -= osd->widget->allocation.width - OSD_S_W;
576        else
577            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
578    
579        if(OSD_S_Y > 0)
580            y -= OSD_S_Y;
581        else
582            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
583    
584        /* within square around puller? */
585        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
586            /* really within puller shape? */
587            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
588                /* expand source selector */
589                osd_source_toggle(osd);
590    
591                /* tell upper layers that user clicked some background element */
592                /* of the OSD */
593                return OSD_BG;
594            }
595        }
596    
597        /* check for clicks into data area */
598        if(priv->expanded && !priv->handler_id) {
599            /* re-adjust from puller top to content top */
600            if(OSD_S_Y < 0)
601                y += OSD_S_EXP_H - OSD_S_PH;
602    
603            if(x > OSD_S_PW &&
604               x < OSD_S_PW + OSD_S_EXP_W &&
605               y > 0 &&
606               y < OSD_S_EXP_H) {
607    
608                int step = (priv->height - 2*OSD_TEXT_BORDER)
609                    / OSM_GPS_MAP_SOURCE_LAST;
610    
611                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
612                y /= step;
613                y += 1;
614    
615                gint old = 0;
616                g_object_get(osd->widget, "map-source", &old, NULL);
617    
618                if(y > OSM_GPS_MAP_SOURCE_NULL &&
619                   y <= OSM_GPS_MAP_SOURCE_LAST &&
620                   old != y) {
621                    g_object_set(osd->widget, "map-source", y, NULL);
622    
623                    osd_render_source_sel(osd);
624                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
625                }
626    
627                /* return "clicked in OSD background" to prevent further */
628                /* processing by application */
629                return OSD_BG;
630            }
631        }
632    
633        return OSD_NONE;
634    }
635    #endif // OSD_SOURCE_SEL
636    
637    static osd_button_t
638    osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
639        osd_button_t but = OSD_NONE;
640    
641    #ifdef OSD_SOURCE_SEL
642        /* the source selection area is handles internally */
643        but = osd_source_check(osd, x, y);
644        if(but != OSD_NONE)
645            return but;
646    #endif
647    
648        x -= OSD_X;
649        y -= OSD_Y;
650    
651        if(OSD_X < 0)
652            x -= (osd->widget->allocation.width - OSD_W);
653    
654        if(OSD_Y < 0)
655            y -= (osd->widget->allocation.height - OSD_H);
656    
657        /* first do a rough test for the OSD area. */
658        /* this is just to avoid an unnecessary detailed test */
659        if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {
660    #ifndef OSD_NO_DPAD
661            but = osd_check_dpad(x, y);
662  #endif  #endif
663    
664            if(but == OSD_NONE)
665                but = osd_check_zoom(x, y);
666        }
667    
668        return but;
669    }
670    
671    #ifndef OSD_NO_DPAD
672  static void  static void
673  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
674      /* move reference to dpad center */      /* move reference to dpad center */
675      x += D_RAD;      x += D_RAD;
676      y += D_RAD;      y += D_RAD;
# Line 234  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 693  osm_gps_map_osd_dpad_labels(cairo_t *cr,
693          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]);
694      }      }
695  }  }
696    #endif
697    
698  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
699  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
700    #define GPS_V0  (D_RAD/7)
701  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
702  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
703    
704  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
705    /* this is either drawn in the center of the dpad (if present) */
706    /* or in the middle of the zoom area */
707  static void  static void
708  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
709      /* move reference to dpad center */      /* move reference to dpad center */
710      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
711      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
712    
713      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
714      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);      cairo_rel_line_to (cr, +GPS_V0, -GPS_V0);
# Line 260  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi Line 723  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
723      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
724      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
725  }  }
726    #endif
727    
728  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
729    
730  static void  static void
731  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
732      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
733      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
734    
# Line 274  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 738  osm_gps_map_osd_zoom_labels(cairo_t *cr,
738      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
739  }  }
740    
741  #ifndef OSD_COLOR  #ifdef OSD_COORDINATES
742  /* if no color has been specified we just use the gdks default colors */  
743    #ifndef OSD_COORDINATES_FONT_SIZE
744    #define OSD_COORDINATES_FONT_SIZE 12
745    #endif
746    
747    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
748    
749    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
750    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
751    
752    /* these can be overwritten with versions that support */
753    /* localization */
754    #ifndef OSD_COORDINATES_CHR_N
755    #define OSD_COORDINATES_CHR_N  "N"
756    #endif
757    #ifndef OSD_COORDINATES_CHR_S
758    #define OSD_COORDINATES_CHR_S  "S"
759    #endif
760    #ifndef OSD_COORDINATES_CHR_E
761    #define OSD_COORDINATES_CHR_E  "E"
762    #endif
763    #ifndef OSD_COORDINATES_CHR_W
764    #define OSD_COORDINATES_CHR_W  "W"
765    #endif
766    
767    
768    
769    /* this is the classic geocaching notation */
770    static char
771    *osd_latitude_str(float latitude) {
772        char *c = OSD_COORDINATES_CHR_N;
773        float integral, fractional;
774    
775        if(isnan(latitude))
776            return NULL;
777    
778        if(latitude < 0) {
779            latitude = fabs(latitude);
780            c = OSD_COORDINATES_CHR_S;
781        }
782    
783        fractional = modff(latitude, &integral);
784    
785        return g_strdup_printf("%s %02d° %06.3f'",
786                               c, (int)integral, fractional*60.0);
787    }
788    
789    static char
790    *osd_longitude_str(float longitude) {
791        char *c = OSD_COORDINATES_CHR_E;
792        float integral, fractional;
793    
794        if(isnan(longitude))
795            return NULL;
796    
797        if(longitude < 0) {
798            longitude = fabs(longitude);
799            c = OSD_COORDINATES_CHR_W;
800        }
801    
802        fractional = modff(longitude, &integral);
803    
804        return g_strdup_printf("%s %03d° %06.3f'",
805                               c, (int)integral, fractional*60.0);
806    }
807    
808  static void  static void
809  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled,  osd_render_coordinates(osm_gps_map_osd_t *osd)
810                         GdkColor *fg, GdkColor *disabled) {  {
811      if(enabled)  gdk_cairo_set_source_color(cr, fg);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
812      else         gdk_cairo_set_source_color(cr, disabled);  
813      cairo_set_line_width (cr, width);      /* get current map position */
814        gfloat lat, lon;
815        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
816    
817        /* check if position has changed enough to require redraw */
818        if(!isnan(priv->coo_lat) && !isnan(priv->coo_lon))
819            if((fabsf(lat - priv->coo_lat) < 1/60000) &&     /* 1/60000 == 1/1000 minute */
820               (fabsf(lon - priv->coo_lon) < 1/60000))
821                return;
822    
823        priv->coo_lat = lat;
824        priv->coo_lon = lon;
825    
826        /* first fill with light transparency */
827        cairo_t *cr = cairo_create(priv->coordinates);
828        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
829        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
830        cairo_paint(cr);
831        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
832    
833        cairo_select_font_face (cr, "Sans",
834                                CAIRO_FONT_SLANT_NORMAL,
835                                CAIRO_FONT_WEIGHT_BOLD);
836        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
837    
838        char *latitude = osd_latitude_str(lat);
839        char *longitude = osd_longitude_str(lon);
840    
841        cairo_text_extents_t lat_extents, lon_extents;
842        cairo_text_extents (cr, latitude, &lat_extents);
843        cairo_text_extents (cr, longitude, &lon_extents);
844    
845        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
846        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
847        cairo_move_to (cr,
848                       (OSD_COORDINATES_W - lat_extents.width)/2,
849                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
850        cairo_text_path (cr, latitude);
851        cairo_move_to (cr,
852                       (OSD_COORDINATES_W - lon_extents.width)/2,
853                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
854                       OSD_COORDINATES_FONT_SIZE);
855        cairo_text_path (cr, longitude);
856      cairo_stroke (cr);      cairo_stroke (cr);
857    
858        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
859        cairo_move_to (cr,
860                       (OSD_COORDINATES_W - lat_extents.width)/2,
861                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
862        cairo_show_text (cr, latitude);
863        cairo_move_to (cr,
864                       (OSD_COORDINATES_W - lon_extents.width)/2,
865                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
866                       OSD_COORDINATES_FONT_SIZE);
867        cairo_show_text (cr, longitude);
868    
869        g_free(latitude);
870        g_free(longitude);
871    
872        cairo_destroy(cr);
873  }  }
874  #else  #endif  // OSD_COORDINATES
875    
876    #ifdef OSD_CROSSHAIR
877    
878    #ifndef OSD_CROSSHAIR_RADIUS
879    #define OSD_CROSSHAIR_RADIUS 10
880    #endif
881    
882    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
883    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
884    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
885    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
886    
887  static void  static void
888  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_crosshair_shape(cairo_t *cr) {
889      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);      cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
890      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);                 OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
891      cairo_set_line_width (cr, width);  
892        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
893                       OSD_CROSSHAIR_H/2);
894        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
895        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
896                       OSD_CROSSHAIR_H/2);
897        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
898    
899        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
900                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
901        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
902        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
903                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
904        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
905    
906      cairo_stroke (cr);      cairo_stroke (cr);
907  }  }
908    
909    static void
910    osd_render_crosshair(osm_gps_map_osd_t *osd)
911    {
912        osd_priv_t *priv = (osd_priv_t*)osd->priv;
913    
914        /* first fill with transparency */
915        cairo_t *cr = cairo_create(priv->crosshair);
916        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
917        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
918        //    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
919        cairo_paint(cr);
920        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
921    
922        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
923    
924        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
925        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
926        osd_render_crosshair_shape(cr);
927    
928        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
929        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
930        osd_render_crosshair_shape(cr);
931    
932        cairo_destroy(cr);
933    }
934  #endif  #endif
935    
936  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SCALE
937  static void  
938  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  #ifndef OSD_SCALE_FONT_SIZE
939      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  #define OSD_SCALE_FONT_SIZE 12
940      cairo_set_line_width (cr, width);  #endif
941    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
942    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
943    
944    /* various parameters used to create the scale */
945    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
946    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
947    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
948    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
949    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
950    
951    static void
952    osd_render_scale(osm_gps_map_osd_t *osd)
953    {
954        osd_priv_t *priv = (osd_priv_t*)osd->priv;
955    
956        /* this only needs to be rendered if the zoom has changed */
957        gint zoom;
958        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
959        if(zoom == priv->scale_zoom)
960            return;
961    
962        priv->scale_zoom = zoom;
963    
964        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
965    
966        /* first fill with transparency */
967        cairo_t *cr = cairo_create(priv->scale);
968        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
969        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
970        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
971        cairo_paint(cr);
972        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
973    
974        /* determine the size of the scale width in meters */
975        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
976    
977        /* scale this to useful values */
978        int exp = logf(width)*M_LOG10E;
979        int mant = width/pow(10,exp);
980        int width_metric = mant * pow(10,exp);
981        char *dist_str = NULL;
982        if(width_metric<1000)
983            dist_str = g_strdup_printf("%u m", width_metric);
984        else
985            dist_str = g_strdup_printf("%u km", width_metric/1000);
986        width_metric /= m_per_pix;
987    
988        /* and now the hard part: scale for useful imperial values :-( */
989        /* try to convert to feet, 1ft == 0.3048 m */
990        width /= 0.3048;
991        float imp_scale = 0.3048;
992        char *dist_imp_unit = "ft";
993    
994        if(width >= 100) {
995            /* 1yd == 3 feet */
996            width /= 3.0;
997            imp_scale *= 3.0;
998            dist_imp_unit = "yd";
999    
1000            if(width >= 1760.0) {
1001                /* 1mi == 1760 yd */
1002                width /= 1760.0;
1003                imp_scale *= 1760.0;
1004                dist_imp_unit = "mi";
1005            }
1006        }
1007    
1008        /* also convert this to full tens/hundreds */
1009        exp = logf(width)*M_LOG10E;
1010        mant = width/pow(10,exp);
1011        int width_imp = mant * pow(10,exp);
1012        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1013    
1014        /* convert back to pixels */
1015        width_imp *= imp_scale;
1016        width_imp /= m_per_pix;
1017    
1018        cairo_select_font_face (cr, "Sans",
1019                                CAIRO_FONT_SLANT_NORMAL,
1020                                CAIRO_FONT_WEIGHT_BOLD);
1021        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1022        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1023    
1024        cairo_text_extents_t extents;
1025        cairo_text_extents (cr, dist_str, &extents);
1026    
1027        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1028        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1029        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1030        cairo_text_path (cr, dist_str);
1031        cairo_stroke (cr);
1032        cairo_move_to (cr, 2*OSD_SCALE_FD,
1033                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1034        cairo_text_path (cr, dist_str_imp);
1035      cairo_stroke (cr);      cairo_stroke (cr);
1036    
1037        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1038        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1039        cairo_show_text (cr, dist_str);
1040        cairo_move_to (cr, 2*OSD_SCALE_FD,
1041                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1042        cairo_show_text (cr, dist_str_imp);
1043    
1044        g_free(dist_str);
1045        g_free(dist_str_imp);
1046    
1047        /* draw white line */
1048        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1049        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1050        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
1051        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1052        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1053        cairo_rel_line_to (cr, width_metric, 0);
1054        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1055        cairo_stroke(cr);
1056        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1057        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1058        cairo_rel_line_to (cr, width_imp, 0);
1059        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1060        cairo_stroke(cr);
1061    
1062        /* draw black line */
1063        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1064        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1065        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1066        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1067        cairo_rel_line_to (cr, width_metric, 0);
1068        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1069        cairo_stroke(cr);
1070        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1071        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1072        cairo_rel_line_to (cr, width_imp, 0);
1073        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1074        cairo_stroke(cr);
1075    
1076        cairo_destroy(cr);
1077  }  }
1078  #endif  #endif
1079    
1080  static void  static void
1081  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_controls(osm_gps_map_osd_t *osd)
1082    {
1083      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1084    
1085        if(priv->controls.rendered
1086    #ifdef OSD_GPS_BUTTON
1087           && (priv->controls.gps_enabled == (osd->cb != NULL))
1088    #endif
1089           )
1090            return;
1091    
1092    #ifdef OSD_GPS_BUTTON
1093        priv->controls.gps_enabled = (osd->cb != NULL);
1094    #endif
1095    
1096    #ifndef OSD_COLOR
1097        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1098        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1099        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1100    #endif
1101    
1102      /* first fill with transparency */      /* first fill with transparency */
1103      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->controls.surface);
1104      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1105      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);
1106      cairo_paint(cr);      cairo_paint(cr);
   
1107      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1108    
1109      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
     gint x = 0, y = 0;  
   
1110  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1111      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1112      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1113      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);  #ifndef OSD_NO_DPAD
1114      osm_gps_map_osd_shape_shadow(cr);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1115        osd_shape_shadow(cr);
1116    #endif
1117  #endif  #endif
1118    
1119      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1120    
1121      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1122  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1123      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1124  #else  #else
1125      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1126  #endif  #endif
1127      osm_gps_map_osd_dpad_shape(cr, x, y);  #ifndef OSD_NO_DPAD
1128        osd_dpad_shape(cr, 1, 1);
1129  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1130      osm_gps_map_osd_shape(cr, &priv->bg, &priv->fg);      osd_shape(cr, &bg, &fg);
1131  #else  #else
1132      osm_gps_map_osd_shape(cr);      osd_shape(cr);
1133    #endif
1134  #endif  #endif
1135    
1136      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1137    
1138  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1139      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1140      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1141      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);  #ifndef OSD_NO_DPAD
1142      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1143      osm_gps_map_osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);  #endif
1144        cairo_stroke(cr);
1145    #ifdef OSD_GPS_BUTTON
1146        osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1147        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1148        cairo_stroke(cr);
1149    #endif
1150  #endif  #endif
1151    
     osm_gps_map_osd_zoom_labels(cr, x, y);  
     osm_gps_map_osd_dpad_labels(cr, x, y);  
1152  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1153      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1154  #else  #else
1155      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1156    #endif
1157        osd_zoom_labels(cr, 1, 1);
1158    #ifndef OSD_NO_DPAD
1159        osd_dpad_labels(cr, 1, 1);
1160  #endif  #endif
1161      osm_gps_map_osd_dpad_gps(cr, x, y);      cairo_stroke(cr);
1162    
1163  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1164      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL, &priv->fg, &priv->da);      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1165  #else  #else
1166      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1167    #endif
1168    #ifdef OSD_GPS_BUTTON
1169        osd_dpad_gps(cr, 1, 1);
1170  #endif  #endif
1171        cairo_stroke(cr);
1172    
1173      cairo_destroy(cr);      cairo_destroy(cr);
1174  }  }
1175    
1176  static void  static void
1177  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)  osd_render(osm_gps_map_osd_t *osd)
1178    {
1179        osd_render_controls(osd);
1180    
1181    #ifdef OSD_SOURCE_SEL
1182        osd_render_source_sel(osd);
1183    #endif
1184    
1185    #ifdef OSD_SCALE
1186        osd_render_scale(osd);
1187    #endif
1188    
1189    #ifdef OSD_CROSSHAIR
1190        osd_render_crosshair(osd);
1191    #endif
1192    
1193    #ifdef OSD_COORDINATES
1194        osd_render_coordinates(osd);
1195    #endif
1196    }
1197    
1198    static void
1199    osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1200  {  {
1201      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
1202    
1203      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1204      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1205      if(!priv->overlay) {      if(!priv->controls.surface) {
1206          /* create overlay ... */          /* create overlay ... */
1207          priv->overlay =          priv->controls.surface =
1208              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1209    
1210            priv->controls.rendered = FALSE;
1211    #ifdef OSD_GPS_BUTTON
1212            priv->controls.gps_enabled = FALSE;
1213    #endif
1214    
1215    #ifdef OSD_SOURCE_SEL
1216            /* the initial OSD state is alway not-expanded */
1217            priv->map_source =
1218                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1219                                               OSD_S_W+2, OSD_S_H+2);
1220    #endif
1221    
1222    #ifdef OSD_SCALE
1223            priv->scale =
1224                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1225                                           OSD_SCALE_W, OSD_SCALE_H);
1226            priv->scale_zoom = -1;
1227    #endif
1228    
1229    #ifdef OSD_CROSSHAIR
1230            priv->crosshair =
1231                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1232                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1233    #endif
1234    
1235    #ifdef OSD_COORDINATES
1236            priv->coordinates =
1237                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1238                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1239    
1240            priv->coo_lat = priv->coo_lon = OSM_GPS_MAP_INVALID;
1241    #endif
1242    
1243          /* ... and render it */          /* ... and render it */
1244          osm_gps_map_osd_render(osd);          osd_render(osd);
1245      }      }
1246    
1247      // now draw this onto the original context      // now draw this onto the original context
1248      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1249      cairo_set_source_surface(cr, priv->overlay, OSD_X, OSD_Y);  
1250        int x, y;
1251    
1252    #ifdef OSD_SCALE
1253        x =  OSD_X;
1254        y = -OSD_Y;
1255        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1256        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1257    
1258        cairo_set_source_surface(cr, priv->scale, x, y);
1259        cairo_paint(cr);
1260    #endif
1261    
1262    #ifdef OSD_CROSSHAIR
1263        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1264        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1265    
1266        cairo_set_source_surface(cr, priv->crosshair, x, y);
1267        cairo_paint(cr);
1268    #endif
1269    
1270    #ifdef OSD_COORDINATES
1271        x = -OSD_X;
1272        y = -OSD_Y;
1273        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1274        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1275    
1276        cairo_set_source_surface(cr, priv->coordinates, x, y);
1277        cairo_paint(cr);
1278    #endif
1279    
1280        x = OSD_X;
1281        if(x < 0)
1282            x += osd->widget->allocation.width - OSD_W;
1283    
1284        y = OSD_Y;
1285        if(y < 0)
1286            y += osd->widget->allocation.height - OSD_H;
1287    
1288        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1289        cairo_paint(cr);
1290    
1291    #ifdef OSD_SOURCE_SEL
1292        if(!priv->handler_id) {
1293            /* the OSD source selection is not being animated */
1294            if(!priv->expanded)
1295                x = osd->widget->allocation.width - OSD_S_W;
1296            else
1297                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1298        } else
1299            x = priv->shift;
1300    
1301        y = OSD_S_Y;
1302        if(OSD_S_Y < 0) {
1303            if(!priv->expanded)
1304                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1305            else
1306                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1307        }
1308    
1309        cairo_set_source_surface(cr, priv->map_source, x, y);
1310      cairo_paint(cr);      cairo_paint(cr);
1311    #endif
1312    
1313      cairo_destroy(cr);      cairo_destroy(cr);
1314  }  }
1315    
1316  static void  static void
1317  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1318  {  {
1319      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1320    
1321      if (priv->overlay)      if (priv->controls.surface)
1322           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->controls.surface);
1323    
1324    #ifdef OSD_SOURCE_SEL
1325        if(priv->handler_id)
1326            gtk_timeout_remove(priv->handler_id);
1327    
1328        if (priv->map_source)
1329             cairo_surface_destroy(priv->map_source);
1330    #endif
1331    
1332    #ifdef OSD_SCALE
1333        if (priv->scale)
1334             cairo_surface_destroy(priv->scale);
1335    #endif
1336    
1337    #ifdef OSD_CROSSHAIR
1338        if (priv->crosshair)
1339             cairo_surface_destroy(priv->crosshair);
1340    #endif
1341    
1342    #ifdef OSD_COORDINATES
1343        if (priv->coordinates)
1344             cairo_surface_destroy(priv->coordinates);
1345    #endif
1346    
1347      g_free(priv);      g_free(priv);
1348  }  }
1349    
1350    static gboolean
1351    osd_busy(osm_gps_map_osd_t *osd)
1352    {
1353    #ifdef OSD_SOURCE_SEL
1354        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1355        return (priv->handler_id != 0);
1356    #else
1357        return FALSE;
1358    #endif
1359    }
1360    
1361  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1362      .draw       = osm_gps_map_osd_draw,      .widget     = NULL,
1363      .check      = osm_gps_map_osd_check,  
1364      .render     = osm_gps_map_osd_render,      .draw       = osd_draw,
1365      .free       = osm_gps_map_osd_free,      .check      = osd_check,
1366        .render     = osd_render,
1367        .free       = osd_free,
1368        .busy       = osd_busy,
1369    
1370      .cb         = NULL,      .cb         = NULL,
1371      .data       = NULL,      .data       = NULL,
# Line 420  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1381  osm_gps_map_osd_classic_init(OsmGpsMap *
1381    
1382      osd_classic.priv = priv;      osd_classic.priv = priv;
1383    
     /* extract style info from the widget */  
     priv->bg = GTK_WIDGET(map)->style->bg[GTK_STATE_NORMAL];  
     priv->fg = GTK_WIDGET(map)->style->fg[GTK_STATE_NORMAL];  
     priv->da = GTK_WIDGET(map)->style->fg[GTK_STATE_INSENSITIVE];  
   
1384      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1385  }  }
1386    
1387    #ifdef OSD_GPS_BUTTON
1388  /* below are osd specific functions which aren't used by osm-gps-map */  /* below are osd specific functions which aren't used by osm-gps-map */
1389  /* but instead are to be used by the main application */  /* but instead are to be used by the main application */
1390  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb, gpointer data) {  void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1391                                     gpointer data) {
1392      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1393      g_return_if_fail (osd);      g_return_if_fail (osd);
1394    
1395      osd->cb = cb;      osd->cb = cb;
# Line 445  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1401  void osm_gps_map_osd_enable_gps (OsmGpsM
1401    
1402      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1403  }  }
1404    #endif
1405    
1406    osd_button_t
1407    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1408        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1409        g_return_val_if_fail (osd, OSD_NONE);
1410    
1411        return osd_check(osd, x, y);
1412    }
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