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 110 by harbaum, Sat Sep 12 20:56:35 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 35  Line 36 
36    
37  //the osd controls  //the osd controls
38  typedef struct {  typedef struct {
39      GdkPixmap *backup;      /* the offscreen representation of the OSD */
40      gint backup_x, backup_y;      struct {
41      cairo_surface_t *overlay;          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        struct {
50            cairo_surface_t *surface;
51            int zoom;
52        } scale;
53    #endif
54    
55    #ifdef OSD_CROSSHAIR
56        struct {
57            cairo_surface_t *surface;
58            gboolean rendered;
59        } crosshair;
60    #endif
61    
62    #ifdef OSD_COORDINATES
63        struct {
64            cairo_surface_t *surface;
65            float lat, lon;
66        } coordinates;
67    #endif
68    
69    #ifdef OSD_SOURCE_SEL
70        struct {
71            /* values to handle the "source" menu */
72            cairo_surface_t *surface;
73            gboolean expanded;
74            gint shift, dir, count;
75            gint handler_id;
76            gint width, height;
77        } source_sel;
78    #endif
79    
80  } osd_priv_t;  } osd_priv_t;
81    
82  /* position and extent of bounding box */  /* position and extent of bounding box */
83    #ifndef OSD_X
84  #define OSD_X      (10)  #define OSD_X      (10)
85  #define OSD_Y      (10)  #endif
86    
87  #define OSD_COLOR            0.5, 0.5, 1  #ifndef OSD_Y
88  #define OSD_COLOR_DISABLED   0.8, 0.8, 0.8  #define OSD_Y      (10)
89    #endif
90    
91  /* parameters of the direction shape */  /* parameters of the direction shape */
92  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
93  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
94  #else  #else
95  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
96  #endif  #endif
97  #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
98  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 61  typedef struct { Line 102  typedef struct {
102  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom
103  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar
104    
105    #ifdef OSD_SHADOW_ENABLE
106  /* shadow also depends on control size */  /* shadow also depends on control size */
107  #define OSD_SHADOW (D_RAD/6)  #define OSD_SHADOW (D_RAD/6)
108    #else
109    #define OSD_SHADOW (0)
110    #endif
111    
112    /* normally the GPS button is in the center of the dpad. if there's */
113    /* no dpad it will go into the zoom area */
114    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
115    #define Z_GPS  1
116    #else
117    #define Z_GPS  0
118    #endif
119    
120  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
121  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
122    #if !Z_GPS
123  #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)
124    #else
125    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
126    #endif
127    
128    #ifdef OSD_SHADOW_ENABLE
129  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
130    #endif
131    
132    #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
133    
 #define Z_TOP    (2 * D_RAD + Z_STEP)  
134  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
135  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
136  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
137  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
138    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
139    
140  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
141  static void  static void
142  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
143  {  {
144      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
145      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 148  osm_gps_map_osd_zoom_shape(cairo_t *cr,
148      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);
149  }  }
150    
151    /* ------------------- color/shadow functions ----------------- */
152    
153    #ifndef OSD_COLOR
154    /* if no color has been specified we just use the gdks default colors */
155    static void
156    osd_labels(cairo_t *cr, gint width, gboolean enabled,
157                           GdkColor *fg, GdkColor *disabled) {
158        if(enabled)  gdk_cairo_set_source_color(cr, fg);
159        else         gdk_cairo_set_source_color(cr, disabled);
160        cairo_set_line_width (cr, width);
161    }
162    #else
163    static void
164    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
165        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
166        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
167        cairo_set_line_width (cr, width);
168    }
169    #endif
170    
171    #ifdef OSD_SHADOW_ENABLE
172    static void
173    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
174        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
175        cairo_set_line_width (cr, width);
176    }
177    #endif
178    
179    #ifndef OSD_NO_DPAD
180  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
181  static void  static void
182  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
183  {  {
184      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);
185  }  }
186    #endif
187    
188    #ifdef OSD_SHADOW_ENABLE
189    static void
190    osd_shape_shadow(cairo_t *cr) {
191        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
192        cairo_fill (cr);
193        cairo_stroke (cr);
194    }
195    #endif
196    
197    #ifndef OSD_COLOR
198    /* if no color has been specified we just use the gdks default colors */
199    static void
200    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
201        gdk_cairo_set_source_color(cr, bg);
202        cairo_fill_preserve (cr);
203        gdk_cairo_set_source_color(cr, fg);
204        cairo_set_line_width (cr, 1);
205        cairo_stroke (cr);
206    }
207    #else
208    static void
209    osd_shape(cairo_t *cr) {
210        cairo_set_source_rgb (cr, OSD_COLOR_BG);
211        cairo_fill_preserve (cr);
212        cairo_set_source_rgb (cr, OSD_COLOR);
213        cairo_set_line_width (cr, 1);
214        cairo_stroke (cr);
215    }
216    #endif
217    
218    
219  static gboolean  static gboolean
220  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 222  osm_gps_map_in_circle(gint x, gint y, gi
222      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
223  }  }
224    
225    #ifndef OSD_NO_DPAD
226  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
227  static osd_button_t  static osd_button_t
228  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
229  {  {
230      /* within entire dpad circle */      /* within entire dpad circle */
231      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))
232      {      {
233          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
234          x -= (OSD_X + D_RAD);          x -= D_RAD;
235          y -= (OSD_Y + D_RAD);          y -= D_RAD;
236    
237    #ifdef OSD_GPS_BUTTON
238          /* check for dpad center goes here! */          /* check for dpad center goes here! */
239          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))
240              return OSD_GPS;              return OSD_GPS;
241    #endif
242    
243          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
244              return OSD_UP;              return OSD_UP;
# Line 132  osm_gps_map_osd_check_dpad(gint x, gint Line 256  osm_gps_map_osd_check_dpad(gint x, gint
256      }      }
257      return OSD_NONE;      return OSD_NONE;
258  }  }
259    #endif
260    
261  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
262  static osd_button_t  static osd_button_t
263  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
264      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) {
265    
266          /* within circle around (-) label */          /* within circle around (-) label */
267          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)  
268              return OSD_OUT;              return OSD_OUT;
269    
270          /* within circle around (+) label */          /* within circle around (+) label */
271          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))
272              return OSD_IN;              return OSD_IN;
273    
274    #if Z_GPS == 1
275            /* within square around center */
276            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
277                return OSD_GPS;
278    #endif
279    
280            /* between center of (-) button and center of entire zoom control area */
281            if(x > OSD_LEFT && x < D_RAD)
282                return OSD_OUT;
283    
284          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
285          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
286              return OSD_IN;              return OSD_IN;
287      }      }
288    
289      return OSD_NONE;      return OSD_NONE;
290  }  }
291    
292    #ifdef OSD_SOURCE_SEL
293    
294    /* place source selection at right border */
295    #define OSD_S_RAD (Z_RAD)
296    #define OSD_S_X   (-OSD_X)
297    #define OSD_S_Y   (OSD_Y)
298    #define OSD_S_PW  (2 * Z_RAD)
299    #define OSD_S_W   (OSD_S_PW)
300    #define OSD_S_PH  (2 * Z_RAD)
301    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
302    
303    /* size of usable area when expanded */
304    #define OSD_S_AREA_W (priv->source_sel.width)
305    #define OSD_S_AREA_H (priv->source_sel.height)
306    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
307    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
308    
309    /* internal value to draw the arrow on the "puller" */
310    #define OSD_S_D0  (OSD_S_RAD/2)
311    #ifndef OSD_FONT_SIZE
312    #define OSD_FONT_SIZE 16.0
313    #endif
314    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
315    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
316    
317    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
318    /* or the entire menu incl. the puller (expanded) */
319    static void
320    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
321        if(!priv->source_sel.expanded) {
322            /* just draw the puller */
323            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
324            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
325            cairo_line_to (cr, x + OSD_S_PW, y);
326        } else {
327            /* draw the puller and the area itself */
328            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
329            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
330            if(OSD_S_Y > 0) {
331                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
332                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
333            } else {
334                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
335                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
336                cairo_line_to (cr, x + OSD_S_PW, y);
337            }
338            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
339            cairo_close_path (cr);
340        }
341    }
342    
343    static void
344    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
345        osd_priv_t *priv = (osd_priv_t*)osd->priv;
346    
347        int py = offset + OSD_S_RAD - OSD_S_D0;
348    
349        if(!priv->source_sel.expanded) {
350            /* draw the "puller" open (<) arrow */
351            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
352            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
353            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
354        } else {
355            if(OSD_S_Y < 0)
356                py += OSD_S_AREA_H - OSD_S_PH;
357    
358            /* draw the "puller" close (>) arrow */
359            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
360            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
361            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
362            cairo_stroke(cr);
363    
364            /* don't draw a shadow for the text content */
365            if(offset == 1) {
366                gint source;
367                g_object_get(osd->widget, "map-source", &source, NULL);
368    
369                cairo_select_font_face (cr, "Sans",
370                                        CAIRO_FONT_SLANT_NORMAL,
371                                        CAIRO_FONT_WEIGHT_BOLD);
372                cairo_set_font_size (cr, OSD_FONT_SIZE);
373    
374                int i, step = (priv->source_sel.height - 2*OSD_TEXT_BORDER) /
375                    OSM_GPS_MAP_SOURCE_LAST;
376                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
377                    cairo_text_extents_t extents;
378                    const char *src = osm_gps_map_source_get_friendly_name(i);
379                    cairo_text_extents (cr, src, &extents);
380    
381                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
382                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
383    
384                    /* draw filled rectangle if selected */
385                    if(source == i) {
386                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
387                                        y - OSD_TEXT_SKIP,
388                                        priv->source_sel.width - OSD_TEXT_BORDER,
389                                        step + OSD_TEXT_SKIP);
390                        cairo_fill(cr);
391    
392                        /* temprarily draw with background color */
393    #ifndef OSD_COLOR
394                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
395                        gdk_cairo_set_source_color(cr, &bg);
396    #else
397                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
398    #endif
399                    }
400    
401                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
402                    cairo_show_text (cr, src);
403    
404                    /* restore color */
405                    if(source == i) {
406    #ifndef OSD_COLOR
407                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
408                        gdk_cairo_set_source_color(cr, &fg);
409    #else
410                        cairo_set_source_rgb (cr, OSD_COLOR);
411    #endif
412                    }
413                }
414            }
415        }
416    }
417    
418    static void
419    osd_render_source_sel(osm_gps_map_osd_t *osd) {
420        osd_priv_t *priv = (osd_priv_t*)osd->priv;
421    
422    #ifndef OSD_COLOR
423        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
424        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
425        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
426    #endif
427    
428        /* draw source selector */
429        cairo_t *cr = cairo_create(priv->source_sel.surface);
430        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
431        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
432        cairo_paint(cr);
433        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
434    
435    #ifdef OSD_SHADOW_ENABLE
436        osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
437        osd_shape_shadow(cr);
438    #endif
439    
440        osd_source_shape(priv, cr, 1, 1);
441    #ifndef OSD_COLOR
442        osd_shape(cr, &bg, &fg);
443    #else
444        osd_shape(cr);
445    #endif
446    
447    #ifdef OSD_SHADOW_ENABLE
448        osd_labels_shadow(cr, Z_RAD/3, TRUE);
449        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
450        cairo_stroke (cr);
451    #endif
452    #ifndef OSD_COLOR
453        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
454    #else
455        osd_labels(cr, Z_RAD/3, TRUE);
456    #endif
457        osd_source_content(osd, cr, 1);
458        cairo_stroke (cr);
459    
460        cairo_destroy(cr);
461    }
462    
463    /* re-allocate the buffer used to draw the menu. This is used */
464    /* to collapse/expand the buffer */
465    static void
466    osd_source_reallocate(osm_gps_map_osd_t *osd) {
467        osd_priv_t *priv = (osd_priv_t*)osd->priv;
468    
469        /* re-allocate offscreen bitmap */
470        g_assert (priv->source_sel.surface);
471    
472        int w = OSD_S_W, h = OSD_S_H;
473        if(priv->source_sel.expanded) {
474            cairo_text_extents_t extents;
475    
476            /* determine content size */
477            cairo_t *cr = cairo_create(priv->source_sel.surface);
478            cairo_select_font_face (cr, "Sans",
479                                    CAIRO_FONT_SLANT_NORMAL,
480                                    CAIRO_FONT_WEIGHT_BOLD);
481            cairo_set_font_size (cr, OSD_FONT_SIZE);
482    
483            /* calculate menu size */
484            int i, max_h = 0, max_w = 0;
485            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
486                const char *src = osm_gps_map_source_get_friendly_name(i);
487                cairo_text_extents (cr, src, &extents);
488    
489                if(extents.width > max_w) max_w = extents.width;
490                if(extents.height > max_h) max_h = extents.height;
491            }
492            cairo_destroy(cr);
493    
494            priv->source_sel.width  = max_w + 2*OSD_TEXT_BORDER;
495            priv->source_sel.height = OSM_GPS_MAP_SOURCE_LAST *
496                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
497    
498            w = OSD_S_EXP_W;
499            h = OSD_S_EXP_H;
500        }
501    
502        cairo_surface_destroy(priv->source_sel.surface);
503        priv->source_sel.surface =
504            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
505    
506        osd_render_source_sel(osd);
507    }
508    
509    #define OSD_HZ      15
510    #define OSD_TIME    500
511    
512    static gboolean osd_source_animate(gpointer data) {
513        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
514        osd_priv_t *priv = (osd_priv_t*)osd->priv;
515        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
516        gboolean done = FALSE;
517        priv->source_sel.count += priv->source_sel.dir;
518    
519        /* shifting in */
520        if(priv->source_sel.dir < 0) {
521            if(priv->source_sel.count <= 0) {
522                priv->source_sel.count = 0;
523                done = TRUE;
524            }
525        } else {
526            if(priv->source_sel.count >= 1000) {
527                priv->source_sel.expanded = FALSE;
528                osd_source_reallocate(osd);
529    
530                priv->source_sel.count = 1000;
531                done = TRUE;
532            }
533        }
534    
535    
536        /* count runs linearly from 0 to 1000, map this nicely onto a position */
537    
538        /* nicer sinoid mapping */
539        float m = 0.5-cos(priv->source_sel.count * M_PI / 1000.0)/2;
540        priv->source_sel.shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
541            m * diff;
542    
543        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
544    
545        if(done)
546            priv->source_sel.handler_id = 0;
547    
548        return !done;
549    }
550    
551    /* switch between expand and collapse mode of source selection */
552    static void
553    osd_source_toggle(osm_gps_map_osd_t *osd)
554    {
555        osd_priv_t *priv = (osd_priv_t*)osd->priv;
556    
557        /* ignore clicks while animation is running */
558        if(priv->source_sel.handler_id)
559            return;
560    
561        /* expand immediately, collapse is handle at the end of the collapse animation */
562        if(!priv->source_sel.expanded) {
563            priv->source_sel.expanded = TRUE;
564            osd_source_reallocate(osd);
565    
566            priv->source_sel.count = 1000;
567            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_W;
568            priv->source_sel.dir = -1000/OSD_HZ;
569        } else {
570            priv->source_sel.count =  0;
571            priv->source_sel.shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
572            priv->source_sel.dir = +1000/OSD_HZ;
573        }
574    
575        priv->source_sel.handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);
576    }
577    
578    /* check if the user clicked inside the source selection area */
579    static osd_button_t
580    osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
581        osd_priv_t *priv = (osd_priv_t*)osd->priv;
582    
583        if(!priv->source_sel.expanded)
584            x -= osd->widget->allocation.width - OSD_S_W;
585        else
586            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
587    
588        if(OSD_S_Y > 0)
589            y -= OSD_S_Y;
590        else
591            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
592    
593        /* within square around puller? */
594        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
595            /* really within puller shape? */
596            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
597                /* expand source selector */
598                osd_source_toggle(osd);
599    
600                /* tell upper layers that user clicked some background element */
601                /* of the OSD */
602                return OSD_BG;
603            }
604        }
605    
606        /* check for clicks into data area */
607        if(priv->source_sel.expanded && !priv->source_sel.handler_id) {
608            /* re-adjust from puller top to content top */
609            if(OSD_S_Y < 0)
610                y += OSD_S_EXP_H - OSD_S_PH;
611    
612            if(x > OSD_S_PW &&
613               x < OSD_S_PW + OSD_S_EXP_W &&
614               y > 0 &&
615               y < OSD_S_EXP_H) {
616    
617                int step = (priv->source_sel.height - 2*OSD_TEXT_BORDER)
618                    / OSM_GPS_MAP_SOURCE_LAST;
619    
620                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
621                y /= step;
622                y += 1;
623    
624                gint old = 0;
625                g_object_get(osd->widget, "map-source", &old, NULL);
626    
627                if(y > OSM_GPS_MAP_SOURCE_NULL &&
628                   y <= OSM_GPS_MAP_SOURCE_LAST &&
629                   old != y) {
630                    g_object_set(osd->widget, "map-source", y, NULL);
631    
632                    osd_render_source_sel(osd);
633                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
634                }
635    
636                /* return "clicked in OSD background" to prevent further */
637                /* processing by application */
638                return OSD_BG;
639            }
640        }
641    
642        return OSD_NONE;
643    }
644    #endif // OSD_SOURCE_SEL
645    
646  static osd_button_t  static osd_button_t
647  osm_gps_map_osd_check(gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
648      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
649    
650    #ifdef OSD_SOURCE_SEL
651        /* the source selection area is handles internally */
652        but = osd_source_check(osd, x, y);
653        if(but != OSD_NONE)
654            return but;
655    #endif
656    
657        x -= OSD_X;
658        y -= OSD_Y;
659    
660        if(OSD_X < 0)
661            x -= (osd->widget->allocation.width - OSD_W);
662    
663        if(OSD_Y < 0)
664            y -= (osd->widget->allocation.height - OSD_H);
665    
666      /* first do a rough test for the OSD area. */      /* first do a rough test for the OSD area. */
667      /* this is just to avoid an unnecessary detailed test */      /* this is just to avoid an unnecessary detailed test */
668      if(x > OSD_X && x < OSD_X + OSD_W &&      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {
669         y > OSD_Y && y < OSD_Y + OSD_H) {  #ifndef OSD_NO_DPAD
670          but = osm_gps_map_osd_check_dpad(x, y);          but = osd_check_dpad(x, y);
671    #endif
672    
673          if(but == OSD_NONE)          if(but == OSD_NONE)
674              but = osm_gps_map_osd_check_zoom(x, y);              but = osd_check_zoom(x, y);
675      }      }
676    
677      return but;      return but;
678  }  }
679    
680  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);  
 }  
   
681  static void  static void
682  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
683      /* move reference to dpad center */      /* move reference to dpad center */
684      x += D_RAD;      x += D_RAD;
685      y += D_RAD;      y += D_RAD;
# Line 215  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 702  osm_gps_map_osd_dpad_labels(cairo_t *cr,
702          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]);
703      }      }
704  }  }
705    #endif
706    
707  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
708  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
709    #define GPS_V0  (D_RAD/7)
710  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
711  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
712    
713  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
714    /* this is either drawn in the center of the dpad (if present) */
715    /* or in the middle of the zoom area */
716  static void  static void
717  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
718      /* move reference to dpad center */      /* move reference to dpad center */
719      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
720      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
721    
722      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
723      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 732  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
732      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
733      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
734  }  }
735    #endif
736    
737  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
738    
739  static void  static void
740  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
741      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
742      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
743    
# Line 255  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 747  osm_gps_map_osd_zoom_labels(cairo_t *cr,
747      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
748  }  }
749    
750    #ifdef OSD_COORDINATES
751    
752    #ifndef OSD_COORDINATES_FONT_SIZE
753    #define OSD_COORDINATES_FONT_SIZE 12
754    #endif
755    
756    #define OSD_COORDINATES_OFFSET (OSD_COORDINATES_FONT_SIZE/6)
757    
758    #define OSD_COORDINATES_W  (8*OSD_COORDINATES_FONT_SIZE+2*OSD_COORDINATES_OFFSET)
759    #define OSD_COORDINATES_H  (2*OSD_COORDINATES_FONT_SIZE+OSD_COORDINATES_OFFSET)
760    
761    /* these can be overwritten with versions that support */
762    /* localization */
763    #ifndef OSD_COORDINATES_CHR_N
764    #define OSD_COORDINATES_CHR_N  "N"
765    #endif
766    #ifndef OSD_COORDINATES_CHR_S
767    #define OSD_COORDINATES_CHR_S  "S"
768    #endif
769    #ifndef OSD_COORDINATES_CHR_E
770    #define OSD_COORDINATES_CHR_E  "E"
771    #endif
772    #ifndef OSD_COORDINATES_CHR_W
773    #define OSD_COORDINATES_CHR_W  "W"
774    #endif
775    
776    
777    
778    /* this is the classic geocaching notation */
779    static char
780    *osd_latitude_str(float latitude) {
781        char *c = OSD_COORDINATES_CHR_N;
782        float integral, fractional;
783    
784        if(isnan(latitude))
785            return NULL;
786    
787        if(latitude < 0) {
788            latitude = fabs(latitude);
789            c = OSD_COORDINATES_CHR_S;
790        }
791    
792        fractional = modff(latitude, &integral);
793    
794        return g_strdup_printf("%s %02d° %06.3f'",
795                               c, (int)integral, fractional*60.0);
796    }
797    
798    static char
799    *osd_longitude_str(float longitude) {
800        char *c = OSD_COORDINATES_CHR_E;
801        float integral, fractional;
802    
803        if(isnan(longitude))
804            return NULL;
805    
806        if(longitude < 0) {
807            longitude = fabs(longitude);
808            c = OSD_COORDINATES_CHR_W;
809        }
810    
811        fractional = modff(longitude, &integral);
812    
813        return g_strdup_printf("%s %03d° %06.3f'",
814                               c, (int)integral, fractional*60.0);
815    }
816    
817  static void  static void
818  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_coordinates(osm_gps_map_osd_t *osd)
819      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  {
820      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
821      cairo_set_line_width (cr, width);  
822        /* get current map position */
823        gfloat lat, lon;
824        g_object_get(osd->widget, "latitude", &lat, "longitude", &lon, NULL);
825    
826        /* check if position has changed enough to require redraw */
827        if(!isnan(priv->coordinates.lat) && !isnan(priv->coordinates.lon))
828            /* 1/60000 == 1/1000 minute */
829            if((fabsf(lat - priv->coordinates.lat) < 1/60000) &&
830               (fabsf(lon - priv->coordinates.lon) < 1/60000))
831                return;
832    
833        priv->coordinates.lat = lat;
834        priv->coordinates.lon = lon;
835    
836        /* first fill with light transparency */
837        cairo_t *cr = cairo_create(priv->coordinates.surface);
838        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
839        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 0.5);
840        cairo_paint(cr);
841        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
842    
843        cairo_select_font_face (cr, "Sans",
844                                CAIRO_FONT_SLANT_NORMAL,
845                                CAIRO_FONT_WEIGHT_BOLD);
846        cairo_set_font_size (cr, OSD_COORDINATES_FONT_SIZE);
847    
848        char *latitude = osd_latitude_str(lat);
849        char *longitude = osd_longitude_str(lon);
850    
851        cairo_text_extents_t lat_extents, lon_extents;
852        cairo_text_extents (cr, latitude, &lat_extents);
853        cairo_text_extents (cr, longitude, &lon_extents);
854    
855        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
856        cairo_set_line_width (cr, OSD_COORDINATES_FONT_SIZE/6);
857        cairo_move_to (cr,
858                       (OSD_COORDINATES_W - lat_extents.width)/2,
859                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
860        cairo_text_path (cr, latitude);
861        cairo_move_to (cr,
862                       (OSD_COORDINATES_W - lon_extents.width)/2,
863                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
864                       OSD_COORDINATES_FONT_SIZE);
865        cairo_text_path (cr, longitude);
866      cairo_stroke (cr);      cairo_stroke (cr);
867    
868        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
869        cairo_move_to (cr,
870                       (OSD_COORDINATES_W - lat_extents.width)/2,
871                       OSD_COORDINATES_OFFSET - lat_extents.y_bearing);
872        cairo_show_text (cr, latitude);
873        cairo_move_to (cr,
874                       (OSD_COORDINATES_W - lon_extents.width)/2,
875                       OSD_COORDINATES_OFFSET - lon_extents.y_bearing +
876                       OSD_COORDINATES_FONT_SIZE);
877        cairo_show_text (cr, longitude);
878    
879        g_free(latitude);
880        g_free(longitude);
881    
882        cairo_destroy(cr);
883  }  }
884    #endif  // OSD_COORDINATES
885    
886    #ifdef OSD_CROSSHAIR
887    
888    #ifndef OSD_CROSSHAIR_RADIUS
889    #define OSD_CROSSHAIR_RADIUS 10
890    #endif
891    
892    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
893    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
894    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
895    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
896    
897    static void
898    osd_render_crosshair_shape(cairo_t *cr) {
899        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
900                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
901    
902        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
903                       OSD_CROSSHAIR_H/2);
904        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
905        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
906                       OSD_CROSSHAIR_H/2);
907        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
908    
909        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
910                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
911        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
912        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
913                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
914        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
915    
 static void  
 osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  
     cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  
     cairo_set_line_width (cr, width);  
916      cairo_stroke (cr);      cairo_stroke (cr);
917  }  }
918    
919  static void  static void
920  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
921    {
922      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
923    
924        if(priv->crosshair.rendered)
925            return;
926    
927        priv->crosshair.rendered = TRUE;
928    
929        /* first fill with transparency */
930        cairo_t *cr = cairo_create(priv->crosshair.surface);
931        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
932        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
933        cairo_paint(cr);
934        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
935    
936        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
937    
938        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
939        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
940        osd_render_crosshair_shape(cr);
941    
942        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
943        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
944        osd_render_crosshair_shape(cr);
945    
946        cairo_destroy(cr);
947    }
948    #endif
949    
950    #ifdef OSD_SCALE
951    
952    #ifndef OSD_SCALE_FONT_SIZE
953    #define OSD_SCALE_FONT_SIZE 12
954    #endif
955    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
956    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
957    
958    /* various parameters used to create the scale */
959    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
960    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
961    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
962    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
963    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
964    
965    static void
966    osd_render_scale(osm_gps_map_osd_t *osd)
967    {
968        osd_priv_t *priv = (osd_priv_t*)osd->priv;
969    
970        /* this only needs to be rendered if the zoom has changed */
971        gint zoom;
972        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
973        if(zoom == priv->scale.zoom)
974            return;
975    
976        priv->scale.zoom = zoom;
977    
978        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
979    
980      /* first fill with transparency */      /* first fill with transparency */
981      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->scale.surface);
982      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
983      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);
984        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
985      cairo_paint(cr);      cairo_paint(cr);
986        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
987    
988        /* determine the size of the scale width in meters */
989        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
990    
991        /* scale this to useful values */
992        int exp = logf(width)*M_LOG10E;
993        int mant = width/pow(10,exp);
994        int width_metric = mant * pow(10,exp);
995        char *dist_str = NULL;
996        if(width_metric<1000)
997            dist_str = g_strdup_printf("%u m", width_metric);
998        else
999            dist_str = g_strdup_printf("%u km", width_metric/1000);
1000        width_metric /= m_per_pix;
1001    
1002        /* and now the hard part: scale for useful imperial values :-( */
1003        /* try to convert to feet, 1ft == 0.3048 m */
1004        width /= 0.3048;
1005        float imp_scale = 0.3048;
1006        char *dist_imp_unit = "ft";
1007    
1008        if(width >= 100) {
1009            /* 1yd == 3 feet */
1010            width /= 3.0;
1011            imp_scale *= 3.0;
1012            dist_imp_unit = "yd";
1013    
1014            if(width >= 1760.0) {
1015                /* 1mi == 1760 yd */
1016                width /= 1760.0;
1017                imp_scale *= 1760.0;
1018                dist_imp_unit = "mi";
1019            }
1020        }
1021    
1022        /* also convert this to full tens/hundreds */
1023        exp = logf(width)*M_LOG10E;
1024        mant = width/pow(10,exp);
1025        int width_imp = mant * pow(10,exp);
1026        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
1027    
1028        /* convert back to pixels */
1029        width_imp *= imp_scale;
1030        width_imp /= m_per_pix;
1031    
1032        cairo_select_font_face (cr, "Sans",
1033                                CAIRO_FONT_SLANT_NORMAL,
1034                                CAIRO_FONT_WEIGHT_BOLD);
1035        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
1036        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1037    
1038        cairo_text_extents_t extents;
1039        cairo_text_extents (cr, dist_str, &extents);
1040    
1041        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
1042        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1043        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1044        cairo_text_path (cr, dist_str);
1045        cairo_stroke (cr);
1046        cairo_move_to (cr, 2*OSD_SCALE_FD,
1047                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1048        cairo_text_path (cr, dist_str_imp);
1049        cairo_stroke (cr);
1050    
1051        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
1052        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
1053        cairo_show_text (cr, dist_str);
1054        cairo_move_to (cr, 2*OSD_SCALE_FD,
1055                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
1056        cairo_show_text (cr, dist_str_imp);
1057    
1058        g_free(dist_str);
1059        g_free(dist_str_imp);
1060    
1061        /* draw white line */
1062        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
1063        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
1064        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
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        /* draw black line */
1077        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
1078        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
1079        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
1080        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
1081        cairo_rel_line_to (cr, width_metric, 0);
1082        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1083        cairo_stroke(cr);
1084        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
1085        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
1086        cairo_rel_line_to (cr, width_imp, 0);
1087        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
1088        cairo_stroke(cr);
1089    
1090        cairo_destroy(cr);
1091    }
1092    #endif
1093    
1094    static void
1095    osd_render_controls(osm_gps_map_osd_t *osd)
1096    {
1097        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1098    
1099        if(priv->controls.rendered
1100    #ifdef OSD_GPS_BUTTON
1101           && (priv->controls.gps_enabled == (osd->cb != NULL))
1102    #endif
1103           )
1104            return;
1105    
1106    #ifdef OSD_GPS_BUTTON
1107        priv->controls.gps_enabled = (osd->cb != NULL);
1108    #endif
1109        priv->controls.rendered = TRUE;
1110    
1111    #ifndef OSD_COLOR
1112        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
1113        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
1114        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
1115    #endif
1116    
1117        /* first fill with transparency */
1118        cairo_t *cr = cairo_create(priv->controls.surface);
1119        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
1120        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
1121        cairo_paint(cr);
1122      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
1123    
1124      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
1125      gint x = 0, y = 0;  #ifdef OSD_SHADOW_ENABLE
1126        osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1127      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_shape_shadow(cr);
1128      osm_gps_map_osd_shape_shadow(cr);  #ifndef OSD_NO_DPAD
1129      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
1130      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
1131    #endif
1132    #endif
1133    
1134      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
1135    
1136      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
1137      osm_gps_map_osd_shape(cr);  #ifndef OSD_COLOR
1138      osm_gps_map_osd_dpad_shape(cr, x, y);      osd_shape(cr, &bg, &fg);
1139      osm_gps_map_osd_shape(cr);  #else
1140        osd_shape(cr);
1141    #endif
1142    #ifndef OSD_NO_DPAD
1143        osd_dpad_shape(cr, 1, 1);
1144    #ifndef OSD_COLOR
1145        osd_shape(cr, &bg, &fg);
1146    #else
1147        osd_shape(cr);
1148    #endif
1149    #endif
1150    
1151      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1152    
1153      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifdef OSD_SHADOW_ENABLE
1154      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1155      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1156      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifndef OSD_NO_DPAD
1157      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);
1158    #endif
1159      osm_gps_map_osd_zoom_labels(cr, x, y);      cairo_stroke(cr);
1160      osm_gps_map_osd_dpad_labels(cr, x, y);  #ifdef OSD_GPS_BUTTON
1161      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1162      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1163      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      cairo_stroke(cr);
1164    #endif
1165    #endif
1166    
1167    #ifndef OSD_COLOR
1168        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1169    #else
1170        osd_labels(cr, Z_RAD/3, TRUE);
1171    #endif
1172        osd_zoom_labels(cr, 1, 1);
1173    #ifndef OSD_NO_DPAD
1174        osd_dpad_labels(cr, 1, 1);
1175    #endif
1176        cairo_stroke(cr);
1177    
1178    #ifndef OSD_COLOR
1179        osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1180    #else
1181        osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1182    #endif
1183    #ifdef OSD_GPS_BUTTON
1184        osd_dpad_gps(cr, 1, 1);
1185    #endif
1186        cairo_stroke(cr);
1187    
1188      cairo_destroy(cr);      cairo_destroy(cr);
1189  }  }
1190    
1191  static void  static void
1192  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset)  osd_render(osm_gps_map_osd_t *osd)
1193  {  {
1194      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_render_controls(osd);
1195    
1196    #ifdef OSD_SOURCE_SEL
1197        osd_render_source_sel(osd);
1198    #endif
1199    
1200      /* backup previous contents */  #ifdef OSD_SCALE
1201      if(!priv->backup)      osd_render_scale(osd);
1202          priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1);  #endif
1203    
1204      gint x = OSD_X + xoffset;  #ifdef OSD_CROSSHAIR
1205      gint y = OSD_Y + yoffset;      osd_render_crosshair(osd);
1206    #endif
1207    
1208      /* create backup of background */  #ifdef OSD_COORDINATES
1209      gdk_draw_drawable(priv->backup,      osd_render_coordinates(osd);
1210          osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  #endif
1211                        osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);  }
1212    
1213      priv->backup_x = x-1;  static void
1214      priv->backup_y = y-1;  osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1215    {
1216        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1217    
1218      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1219      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1220      if(!priv->overlay) {      if(!priv->controls.surface) {
1221          /* create overlay ... */          /* create overlay ... */
1222          priv->overlay =          priv->controls.surface =
1223              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1224    
1225            priv->controls.rendered = FALSE;
1226    #ifdef OSD_GPS_BUTTON
1227            priv->controls.gps_enabled = FALSE;
1228    #endif
1229    
1230    #ifdef OSD_SOURCE_SEL
1231            /* the initial OSD state is alway not-expanded */
1232            priv->source_sel.surface =
1233                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1234                                               OSD_S_W+2, OSD_S_H+2);
1235    #endif
1236    
1237    #ifdef OSD_SCALE
1238            priv->scale.surface =
1239                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1240                                           OSD_SCALE_W, OSD_SCALE_H);
1241            priv->scale.zoom = -1;
1242    #endif
1243    
1244    #ifdef OSD_CROSSHAIR
1245            priv->crosshair.surface =
1246                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1247                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1248            priv->crosshair.rendered = FALSE;
1249    #endif
1250    
1251    #ifdef OSD_COORDINATES
1252            priv->coordinates.surface =
1253                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1254                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1255    
1256            priv->coordinates.lat = priv->coordinates.lon = OSM_GPS_MAP_INVALID;
1257    #endif
1258    
1259          /* ... and render it */          /* ... and render it */
1260          osm_gps_map_osd_render(osd);          osd_render(osd);
1261      }      }
1262    
1263      // now draw this onto the original context      // now draw this onto the original context
1264      cairo_t *cr = gdk_cairo_create(osd->pixmap);      cairo_t *cr = gdk_cairo_create(drawable);
1265      cairo_set_source_surface(cr, priv->overlay, x, y);  
1266        int x, y;
1267    
1268    #ifdef OSD_SCALE
1269        x =  OSD_X;
1270        y = -OSD_Y;
1271        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1272        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1273    
1274        cairo_set_source_surface(cr, priv->scale.surface, x, y);
1275      cairo_paint(cr);      cairo_paint(cr);
1276      cairo_destroy(cr);  #endif
 }  
1277    
1278  static void  #ifdef OSD_CROSSHAIR
1279  osm_gps_map_osd_restore (osm_gps_map_osd_t *osd)      x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1280  {      y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1281      osd_priv_t *priv = (osd_priv_t*)osd->priv;  
1282        cairo_set_source_surface(cr, priv->crosshair.surface, x, y);
1283        cairo_paint(cr);
1284    #endif
1285    
1286    #ifdef OSD_COORDINATES
1287        x = -OSD_X;
1288        y = -OSD_Y;
1289        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1290        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1291    
1292      /* restore backup of previous contents */      cairo_set_source_surface(cr, priv->coordinates.surface, x, y);
1293      if(priv->backup) {      cairo_paint(cr);
1294          /* create backup of background */  #endif
1295          gdk_draw_drawable(osd->pixmap,  
1296                            osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],      x = OSD_X;
1297                            priv->backup, 0, 0,      if(x < 0)
1298                            priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2);          x += osd->widget->allocation.width - OSD_W;
1299    
1300        y = OSD_Y;
1301        if(y < 0)
1302            y += osd->widget->allocation.height - OSD_H;
1303    
1304        cairo_set_source_surface(cr, priv->controls.surface, x, y);
1305        cairo_paint(cr);
1306    
1307    #ifdef OSD_SOURCE_SEL
1308        if(!priv->source_sel.handler_id) {
1309            /* the OSD source selection is not being animated */
1310            if(!priv->source_sel.expanded)
1311                x = osd->widget->allocation.width - OSD_S_W;
1312            else
1313                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1314        } else
1315            x = priv->source_sel.shift;
1316    
1317        y = OSD_S_Y;
1318        if(OSD_S_Y < 0) {
1319            if(!priv->source_sel.expanded)
1320                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1321            else
1322                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1323      }      }
1324    
1325        cairo_set_source_surface(cr, priv->source_sel.surface, x, y);
1326        cairo_paint(cr);
1327    #endif
1328    
1329        cairo_destroy(cr);
1330  }  }
1331    
1332  static void  static void
1333  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1334  {  {
1335      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1336    
1337      if (priv->backup)      if (priv->controls.surface)
1338          g_object_unref(priv->backup);           cairo_surface_destroy(priv->controls.surface);
1339    
1340      if (priv->overlay)  #ifdef OSD_SOURCE_SEL
1341           cairo_surface_destroy(priv->overlay);      if(priv->source_sel.handler_id)
1342            gtk_timeout_remove(priv->source_sel.handler_id);
1343    
1344        if (priv->source_sel.surface)
1345             cairo_surface_destroy(priv->source_sel.surface);
1346    #endif
1347    
1348    #ifdef OSD_SCALE
1349        if (priv->scale.surface)
1350             cairo_surface_destroy(priv->scale.surface);
1351    #endif
1352    
1353    #ifdef OSD_CROSSHAIR
1354        if (priv->crosshair.surface)
1355             cairo_surface_destroy(priv->crosshair.surface);
1356    #endif
1357    
1358    #ifdef OSD_COORDINATES
1359        if (priv->coordinates.surface)
1360             cairo_surface_destroy(priv->coordinates.surface);
1361    #endif
1362    
1363      g_free(priv);      g_free(priv);
1364  }  }
1365    
1366    static gboolean
1367    osd_busy(osm_gps_map_osd_t *osd)
1368    {
1369    #ifdef OSD_SOURCE_SEL
1370        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1371        return (priv->source_sel.handler_id != 0);
1372    #else
1373        return FALSE;
1374    #endif
1375    }
1376    
1377  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1378      .restore    = osm_gps_map_osd_restore,      .widget     = NULL,
1379      .draw       = osm_gps_map_osd_draw,  
1380      .check      = osm_gps_map_osd_check,      .draw       = osd_draw,
1381      .render     = osm_gps_map_osd_render,      .check      = osd_check,
1382      .free       = osm_gps_map_osd_free,      .render     = osd_render,
1383        .free       = osd_free,
1384        .busy       = osd_busy,
1385    
1386      .cb         = NULL,      .cb         = NULL,
1387      .data       = NULL,      .data       = NULL,
# Line 404  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1400  osm_gps_map_osd_classic_init(OsmGpsMap *
1400      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1401  }  }
1402    
1403    #ifdef OSD_GPS_BUTTON
1404  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 */
1405    /* but instead are to be used by the main application */
1406    void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1407                                     gpointer data) {
1408      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1409      g_return_if_fail (osd);      g_return_if_fail (osd);
1410    
1411      osd->cb = cb;      osd->cb = cb;
# Line 419  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1417  void osm_gps_map_osd_enable_gps (OsmGpsM
1417    
1418      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1419  }  }
1420    #endif
1421    
1422    osd_button_t
1423    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1424        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1425        g_return_val_if_fail (osd, OSD_NONE);
1426    
1427        return osd_check(osd, x, y);
1428    }
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  Added in v.110