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 106 by harbaum, Thu Sep 10 13:06:16 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 33  Line 34 
34  #include "osm-gps-map.h"  #include "osm-gps-map.h"
35  #include "osm-gps-map-osd-classic.h"  #include "osm-gps-map-osd-classic.h"
36    
37    #define OSD_COORDINATES
38    
39  //the osd controls  //the osd controls
40  typedef struct {  typedef struct {
41      GdkPixmap *backup;      /* the offscreen representation of the OSD */
     gint backup_x, backup_y;  
42      cairo_surface_t *overlay;      cairo_surface_t *overlay;
43    
44    #ifdef OSD_SCALE
45        cairo_surface_t *scale;
46        int scale_zoom;
47    #endif
48    
49    #ifdef OSD_CROSSHAIR
50        cairo_surface_t *crosshair;
51    #endif
52    
53    #ifdef OSD_COORDINATES
54        cairo_surface_t *coordinates;
55    #endif
56    
57    #ifdef OSD_SOURCE_SEL
58        /* values to handle the "source" menu */
59        cairo_surface_t *map_source;
60        gboolean expanded;
61        gint shift, dir, count;
62        gint handler_id;
63        gint width, height;
64    #endif
65    
66  } osd_priv_t;  } osd_priv_t;
67    
68  /* position and extent of bounding box */  /* position and extent of bounding box */
69    #ifndef OSD_X
70  #define OSD_X      (10)  #define OSD_X      (10)
71  #define OSD_Y      (10)  #endif
72    
73  #define OSD_COLOR            0.5, 0.5, 1  #ifndef OSD_Y
74  #define OSD_COLOR_DISABLED   0.8, 0.8, 0.8  #define OSD_Y      (10)
75    #endif
76    
77  /* parameters of the direction shape */  /* parameters of the direction shape */
78  #ifndef OSM_GPS_MAP_OSD_DIAMETER  #ifndef OSD_DIAMETER
79  #define D_RAD  (30)         // diameter of dpad  #define D_RAD  (30)         // diameter of dpad
80  #else  #else
81  #define D_RAD  (OSM_GPS_MAP_OSD_DIAMETER)  #define D_RAD  (OSD_DIAMETER)
82  #endif  #endif
83  #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
84  #define D_LEN  (D_RAD/4)    // length of arrow  #define D_LEN  (D_RAD/4)    // length of arrow
# Line 61  typedef struct { Line 88  typedef struct {
88  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom  #define Z_STEP   (D_RAD/4)  // distance between dpad and zoom
89  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar  #define Z_RAD    (D_RAD/2)  // radius of "caps" of zoom bar
90    
91    #ifdef OSD_SHADOW_ENABLE
92  /* shadow also depends on control size */  /* shadow also depends on control size */
93  #define OSD_SHADOW (D_RAD/6)  #define OSD_SHADOW (D_RAD/6)
94    #else
95    #define OSD_SHADOW (0)
96    #endif
97    
98    /* normally the GPS button is in the center of the dpad. if there's */
99    /* no dpad it will go into the zoom area */
100    #if defined(OSD_GPS_BUTTON) && defined(OSD_NO_DPAD)
101    #define Z_GPS  1
102    #else
103    #define Z_GPS  0
104    #endif
105    
106  /* total width and height of controls incl. shadow */  /* total width and height of controls incl. shadow */
107  #define OSD_W    (2*D_RAD + OSD_SHADOW)  #define OSD_W    (2*D_RAD + OSD_SHADOW + Z_GPS * 2 * Z_RAD)
108    #if !Z_GPS
109  #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)
110    #else
111    #define OSD_H    (2*Z_RAD + OSD_SHADOW)
112    #endif
113    
114    #ifdef OSD_SHADOW_ENABLE
115  #define OSD_LBL_SHADOW (OSD_SHADOW/2)  #define OSD_LBL_SHADOW (OSD_SHADOW/2)
116    #endif
117    
118    #define Z_TOP    ((1-Z_GPS) * (2 * D_RAD + Z_STEP))
119    
 #define Z_TOP    (2 * D_RAD + Z_STEP)  
120  #define Z_MID    (Z_TOP + Z_RAD)  #define Z_MID    (Z_TOP + Z_RAD)
121  #define Z_BOT    (Z_MID + Z_RAD)  #define Z_BOT    (Z_MID + Z_RAD)
122  #define Z_LEFT   (Z_RAD)  #define Z_LEFT   (Z_RAD)
123  #define Z_RIGHT  (2 * D_RAD - Z_RAD)  #define Z_RIGHT  (2 * D_RAD - Z_RAD + Z_GPS * 2 * Z_RAD)
124    #define Z_CENTER ((Z_RIGHT + Z_LEFT)/2)
125    
126  /* create the cairo shape used for the zoom buttons */  /* create the cairo shape used for the zoom buttons */
127  static void  static void
128  osm_gps_map_osd_zoom_shape(cairo_t *cr, gint x, gint y)  osd_zoom_shape(cairo_t *cr, gint x, gint y)
129  {  {
130      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);      cairo_move_to (cr, x+Z_LEFT,    y+Z_TOP);
131      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 134  osm_gps_map_osd_zoom_shape(cairo_t *cr,
134      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);
135  }  }
136    
137    /* ------------------- color/shadow functions ----------------- */
138    
139    #ifndef OSD_COLOR
140    /* if no color has been specified we just use the gdks default colors */
141    static void
142    osd_labels(cairo_t *cr, gint width, gboolean enabled,
143                           GdkColor *fg, GdkColor *disabled) {
144        if(enabled)  gdk_cairo_set_source_color(cr, fg);
145        else         gdk_cairo_set_source_color(cr, disabled);
146        cairo_set_line_width (cr, width);
147    }
148    #else
149    static void
150    osd_labels(cairo_t *cr, gint width, gboolean enabled) {
151        if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
152        else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
153        cairo_set_line_width (cr, width);
154    }
155    #endif
156    
157    #ifdef OSD_SHADOW_ENABLE
158    static void
159    osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
160        cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
161        cairo_set_line_width (cr, width);
162    }
163    #endif
164    
165    #ifndef OSD_NO_DPAD
166  /* create the cairo shape used for the dpad */  /* create the cairo shape used for the dpad */
167  static void  static void
168  osm_gps_map_osd_dpad_shape(cairo_t *cr, gint x, gint y)  osd_dpad_shape(cairo_t *cr, gint x, gint y)
169  {  {
170      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);
171  }  }
172    #endif
173    
174    #ifdef OSD_SHADOW_ENABLE
175    static void
176    osd_shape_shadow(cairo_t *cr) {
177        cairo_set_source_rgba (cr, 0, 0, 0, 0.2);
178        cairo_fill (cr);
179        cairo_stroke (cr);
180    }
181    #endif
182    
183    #ifndef OSD_COLOR
184    /* if no color has been specified we just use the gdks default colors */
185    static void
186    osd_shape(cairo_t *cr, GdkColor *bg, GdkColor *fg) {
187        gdk_cairo_set_source_color(cr, bg);
188        cairo_fill_preserve (cr);
189        gdk_cairo_set_source_color(cr, fg);
190        cairo_set_line_width (cr, 1);
191        cairo_stroke (cr);
192    }
193    #else
194    static void
195    osd_shape(cairo_t *cr) {
196        cairo_set_source_rgb (cr, OSD_COLOR_BG);
197        cairo_fill_preserve (cr);
198        cairo_set_source_rgb (cr, OSD_COLOR);
199        cairo_set_line_width (cr, 1);
200        cairo_stroke (cr);
201    }
202    #endif
203    
204    
205  static gboolean  static gboolean
206  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 208  osm_gps_map_in_circle(gint x, gint y, gi
208      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);      return( pow(cx - x, 2) + pow(cy - y, 2) < rad * rad);
209  }  }
210    
211    #ifndef OSD_NO_DPAD
212  /* check whether x/y is within the dpad */  /* check whether x/y is within the dpad */
213  static osd_button_t  static osd_button_t
214  osm_gps_map_osd_check_dpad(gint x, gint y)  osd_check_dpad(gint x, gint y)
215  {  {
216      /* within entire dpad circle */      /* within entire dpad circle */
217      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))
218      {      {
219          /* convert into position relative to dpads centre */          /* convert into position relative to dpads centre */
220          x -= (OSD_X + D_RAD);          x -= D_RAD;
221          y -= (OSD_Y + D_RAD);          y -= D_RAD;
222    
223    #ifdef OSD_GPS_BUTTON
224          /* check for dpad center goes here! */          /* check for dpad center goes here! */
225          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))
226              return OSD_GPS;              return OSD_GPS;
227    #endif
228    
229          if( y < 0 && abs(x) < abs(y))          if( y < 0 && abs(x) < abs(y))
230              return OSD_UP;              return OSD_UP;
# Line 132  osm_gps_map_osd_check_dpad(gint x, gint Line 242  osm_gps_map_osd_check_dpad(gint x, gint
242      }      }
243      return OSD_NONE;      return OSD_NONE;
244  }  }
245    #endif
246    
247  /* check whether x/y is within the zoom pads */  /* check whether x/y is within the zoom pads */
248  static osd_button_t  static osd_button_t
249  osm_gps_map_osd_check_zoom(gint x, gint y) {  osd_check_zoom(gint x, gint y) {
250      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) {
251    
252          /* within circle around (-) label */          /* within circle around (-) label */
253          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)  
254              return OSD_OUT;              return OSD_OUT;
255    
256          /* within circle around (+) label */          /* within circle around (+) label */
257          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))
258              return OSD_IN;              return OSD_IN;
259    
260    #if Z_GPS == 1
261            /* within square around center */
262            if( x > Z_CENTER - Z_RAD && x < Z_CENTER + Z_RAD)
263                return OSD_GPS;
264    #endif
265    
266            /* between center of (-) button and center of entire zoom control area */
267            if(x > OSD_LEFT && x < D_RAD)
268                return OSD_OUT;
269    
270          /* between center of (+) button and center of entire zoom control area */          /* between center of (+) button and center of entire zoom control area */
271          if(x < OSD_RIGHT && x > OSD_X + D_RAD)          if(x < OSD_RIGHT && x > D_RAD)
272              return OSD_IN;              return OSD_IN;
273      }      }
274    
275      return OSD_NONE;      return OSD_NONE;
276  }  }
277    
278    #ifdef OSD_SOURCE_SEL
279    
280    /* place source selection at right border */
281    #define OSD_S_RAD (Z_RAD)
282    #define OSD_S_X   (-OSD_X)
283    #define OSD_S_Y   (OSD_Y)
284    #define OSD_S_PW  (2 * Z_RAD)
285    #define OSD_S_W   (OSD_S_PW)
286    #define OSD_S_PH  (2 * Z_RAD)
287    #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
288    
289    /* size of usable area when expanded */
290    #define OSD_S_AREA_W (priv->width)
291    #define OSD_S_AREA_H (priv->height)
292    #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
293    #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
294    
295    /* internal value to draw the arrow on the "puller" */
296    #define OSD_S_D0  (OSD_S_RAD/2)
297    #ifndef OSD_FONT_SIZE
298    #define OSD_FONT_SIZE 16.0
299    #endif
300    #define OSD_TEXT_BORDER   (OSD_FONT_SIZE/2)
301    #define OSD_TEXT_SKIP     (OSD_FONT_SIZE/8)
302    
303    /* draw the shape of the source selection OSD, either only the puller (not expanded) */
304    /* or the entire menu incl. the puller (expanded) */
305    static void
306    osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
307        if(!priv->expanded) {
308            /* just draw the puller */
309            cairo_move_to (cr, x + OSD_S_PW, y + OSD_S_PH);
310            cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
311            cairo_line_to (cr, x + OSD_S_PW, y);
312        } else {
313            /* draw the puller and the area itself */
314            cairo_move_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y + OSD_S_AREA_H);
315            cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H);
316            if(OSD_S_Y > 0) {
317                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_PH);
318                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
319            } else {
320                cairo_arc (cr, x+OSD_S_RAD, y+OSD_S_AREA_H-OSD_S_RAD, OSD_S_RAD, M_PI/2, -M_PI/2);
321                cairo_line_to (cr, x + OSD_S_PW, y + OSD_S_AREA_H - OSD_S_PH);
322                cairo_line_to (cr, x + OSD_S_PW, y);
323            }
324            cairo_line_to (cr, x + OSD_S_PW + OSD_S_AREA_W, y);
325            cairo_close_path (cr);
326        }
327    }
328    
329    static void
330    osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
331        osd_priv_t *priv = (osd_priv_t*)osd->priv;
332    
333        int py = offset + OSD_S_RAD - OSD_S_D0;
334    
335        if(!priv->expanded) {
336            /* draw the "puller" open (<) arrow */
337            cairo_move_to (cr, offset + OSD_S_RAD + OSD_S_D0/2, py);
338            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
339            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
340        } else {
341            if(OSD_S_Y < 0)
342                py += OSD_S_AREA_H - OSD_S_PH;
343    
344            /* draw the "puller" close (>) arrow */
345            cairo_move_to (cr, offset + OSD_S_RAD - OSD_S_D0/2, py);
346            cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
347            cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
348            cairo_stroke(cr);
349    
350            /* don't draw a shadow for the text content */
351            if(offset == 1) {
352                gint source;
353                g_object_get(osd->widget, "map-source", &source, NULL);
354    
355                cairo_select_font_face (cr, "Sans",
356                                        CAIRO_FONT_SLANT_NORMAL,
357                                        CAIRO_FONT_WEIGHT_BOLD);
358                cairo_set_font_size (cr, OSD_FONT_SIZE);
359    
360                int i, step = (priv->height - 2*OSD_TEXT_BORDER) /
361                    OSM_GPS_MAP_SOURCE_LAST;
362                for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
363                    cairo_text_extents_t extents;
364                    const char *src = osm_gps_map_source_get_friendly_name(i);
365                    cairo_text_extents (cr, src, &extents);
366    
367                    int x = offset + OSD_S_PW + OSD_TEXT_BORDER;
368                    int y = offset + step * (i-1) + OSD_TEXT_BORDER;
369    
370                    /* draw filled rectangle if selected */
371                    if(source == i) {
372                        cairo_rectangle(cr, x - OSD_TEXT_BORDER/2,
373                                        y - OSD_TEXT_SKIP,
374                                        priv->width - OSD_TEXT_BORDER,
375                                        step + OSD_TEXT_SKIP);
376                        cairo_fill(cr);
377    
378                        /* temprarily draw with background color */
379    #ifndef OSD_COLOR
380                        GdkColor bg = osd->widget->style->bg[GTK_STATE_NORMAL];
381                        gdk_cairo_set_source_color(cr, &bg);
382    #else
383                        cairo_set_source_rgb (cr, OSD_COLOR_BG);
384    #endif
385                    }
386    
387                    cairo_move_to (cr, x, y + OSD_TEXT_SKIP - extents.y_bearing);
388                    cairo_show_text (cr, src);
389    
390                    /* restore color */
391                    if(source == i) {
392    #ifndef OSD_COLOR
393                        GdkColor fg = osd->widget->style->fg[GTK_STATE_NORMAL];
394                        gdk_cairo_set_source_color(cr, &fg);
395    #else
396                        cairo_set_source_rgb (cr, OSD_COLOR);
397    #endif
398                    }
399                }
400            }
401        }
402    }
403    
404    static void
405    osd_render_source_sel(osm_gps_map_osd_t *osd) {
406        osd_priv_t *priv = (osd_priv_t*)osd->priv;
407    
408    #ifndef OSD_COLOR
409        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
410        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
411        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
412    #endif
413    
414        /* draw source selector */
415        cairo_t *cr = cairo_create(priv->map_source);
416        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
417        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
418        cairo_paint(cr);
419        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
420    
421    #ifdef OSD_SHADOW_ENABLE
422        osd_source_shape(priv, cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
423        osd_shape_shadow(cr);
424    #endif
425    
426        osd_source_shape(priv, cr, 1, 1);
427    #ifndef OSD_COLOR
428        osd_shape(cr, &bg, &fg);
429    #else
430        osd_shape(cr);
431    #endif
432    
433    #ifdef OSD_SHADOW_ENABLE
434        osd_labels_shadow(cr, Z_RAD/3, TRUE);
435        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
436        cairo_stroke (cr);
437    #endif
438    #ifndef OSD_COLOR
439        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
440    #else
441        osd_labels(cr, Z_RAD/3, TRUE);
442    #endif
443        osd_source_content(osd, cr, 1);
444        cairo_stroke (cr);
445    
446        cairo_destroy(cr);
447    }
448    
449    /* re-allocate the buffer used to draw the menu. This is used */
450    /* to collapse/expand the buffer */
451    static void
452    osd_source_reallocate(osm_gps_map_osd_t *osd) {
453        osd_priv_t *priv = (osd_priv_t*)osd->priv;
454    
455        /* re-allocate offscreen bitmap */
456        g_assert (priv->map_source);
457    
458        int w = OSD_S_W, h = OSD_S_H;
459        if(priv->expanded) {
460            cairo_text_extents_t extents;
461    
462            /* determine content size */
463            cairo_t *cr = cairo_create(priv->map_source);
464            cairo_select_font_face (cr, "Sans",
465                                    CAIRO_FONT_SLANT_NORMAL,
466                                    CAIRO_FONT_WEIGHT_BOLD);
467            cairo_set_font_size (cr, OSD_FONT_SIZE);
468    
469            /* calculate menu size */
470            int i, max_h = 0, max_w = 0;
471            for(i=OSM_GPS_MAP_SOURCE_NULL+1;i<=OSM_GPS_MAP_SOURCE_LAST;i++) {
472                const char *src = osm_gps_map_source_get_friendly_name(i);
473                cairo_text_extents (cr, src, &extents);
474    
475                if(extents.width > max_w) max_w = extents.width;
476                if(extents.height > max_h) max_h = extents.height;
477            }
478            cairo_destroy(cr);
479    
480            priv->width  = max_w + 2*OSD_TEXT_BORDER;
481            priv->height = OSM_GPS_MAP_SOURCE_LAST *
482                (max_h + 2*OSD_TEXT_SKIP) + 2*OSD_TEXT_BORDER;
483    
484            w = OSD_S_EXP_W;
485            h = OSD_S_EXP_H;
486        }
487    
488        cairo_surface_destroy(priv->map_source);
489        priv->map_source =
490            cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
491    
492        osd_render_source_sel(osd);
493    }
494    
495    #define OSD_HZ      15
496    #define OSD_TIME    500
497    
498    static gboolean osd_source_animate(gpointer data) {
499        osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
500        osd_priv_t *priv = (osd_priv_t*)osd->priv;
501        int diff = OSD_S_EXP_W - OSD_S_W - OSD_S_X;
502        gboolean done = FALSE;
503        priv->count += priv->dir;
504    
505        /* shifting in */
506        if(priv->dir < 0) {
507            if(priv->count <= 0) {
508                priv->count = 0;
509                done = TRUE;
510            }
511        } else {
512            if(priv->count >= 1000) {
513                priv->expanded = FALSE;
514                osd_source_reallocate(osd);
515    
516                priv->count = 1000;
517                done = TRUE;
518            }
519        }
520    
521    
522        /* count runs linearly from 0 to 1000, map this nicely onto a position */
523    
524        /* nicer sinoid mapping */
525        float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;
526        priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
527            m * diff;
528    
529        osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
530    
531        if(done)
532            priv->handler_id = 0;
533    
534        return !done;
535    }
536    
537    /* switch between expand and collapse mode of source selection */
538    static void
539    osd_source_toggle(osm_gps_map_osd_t *osd)
540    {
541        osd_priv_t *priv = (osd_priv_t*)osd->priv;
542    
543        /* ignore clicks while animation is running */
544        if(priv->handler_id)
545            return;
546    
547        /* expand immediately, collapse is handle at the end of the collapse animation */
548        if(!priv->expanded) {
549            priv->expanded = TRUE;
550            osd_source_reallocate(osd);
551    
552            priv->count = 1000;
553            priv->shift = osd->widget->allocation.width - OSD_S_W;
554            priv->dir = -1000/OSD_HZ;
555        } else {
556            priv->count =  0;
557            priv->shift = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
558            priv->dir = +1000/OSD_HZ;
559        }
560    
561        priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);
562    }
563    
564    /* check if the user clicked inside the source selection area */
565    static osd_button_t
566    osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
567        osd_priv_t *priv = (osd_priv_t*)osd->priv;
568    
569        if(!priv->expanded)
570            x -= osd->widget->allocation.width - OSD_S_W;
571        else
572            x -= osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
573    
574        if(OSD_S_Y > 0)
575            y -= OSD_S_Y;
576        else
577            y -= osd->widget->allocation.height - OSD_S_PH + OSD_S_Y;
578    
579        /* within square around puller? */
580        if(y > 0 && y < OSD_S_PH && x > 0 && x < OSD_S_PW) {
581            /* really within puller shape? */
582            if(x > Z_RAD || osm_gps_map_in_circle(x, y, Z_RAD, Z_RAD, Z_RAD)) {
583                /* expand source selector */
584                osd_source_toggle(osd);
585    
586                /* tell upper layers that user clicked some background element */
587                /* of the OSD */
588                return OSD_BG;
589            }
590        }
591    
592        /* check for clicks into data area */
593        if(priv->expanded && !priv->handler_id) {
594            /* re-adjust from puller top to content top */
595            if(OSD_S_Y < 0)
596                y += OSD_S_EXP_H - OSD_S_PH;
597    
598            if(x > OSD_S_PW &&
599               x < OSD_S_PW + OSD_S_EXP_W &&
600               y > 0 &&
601               y < OSD_S_EXP_H) {
602    
603                int step = (priv->height - 2*OSD_TEXT_BORDER)
604                    / OSM_GPS_MAP_SOURCE_LAST;
605    
606                y -= OSD_TEXT_BORDER - OSD_TEXT_SKIP;
607                y /= step;
608                y += 1;
609    
610                gint old = 0;
611                g_object_get(osd->widget, "map-source", &old, NULL);
612    
613                if(y > OSM_GPS_MAP_SOURCE_NULL &&
614                   y <= OSM_GPS_MAP_SOURCE_LAST &&
615                   old != y) {
616                    g_object_set(osd->widget, "map-source", y, NULL);
617    
618                    osd_render_source_sel(osd);
619                    osm_gps_map_repaint(OSM_GPS_MAP(osd->widget));
620                }
621    
622                /* return "clicked in OSD background" to prevent further */
623                /* processing by application */
624                return OSD_BG;
625            }
626        }
627    
628        return OSD_NONE;
629    }
630    #endif // OSD_SOURCE_SEL
631    
632  static osd_button_t  static osd_button_t
633  osm_gps_map_osd_check(gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
634      osd_button_t but = OSD_NONE;      osd_button_t but = OSD_NONE;
635    
636    #ifdef OSD_SOURCE_SEL
637        /* the source selection area is handles internally */
638        but = osd_source_check(osd, x, y);
639        if(but != OSD_NONE)
640            return but;
641    #endif
642    
643        x -= OSD_X;
644        y -= OSD_Y;
645    
646        if(OSD_X < 0)
647            x -= (osd->widget->allocation.width - OSD_W);
648    
649        if(OSD_Y < 0)
650            y -= (osd->widget->allocation.height - OSD_H);
651    
652      /* first do a rough test for the OSD area. */      /* first do a rough test for the OSD area. */
653      /* this is just to avoid an unnecessary detailed test */      /* this is just to avoid an unnecessary detailed test */
654      if(x > OSD_X && x < OSD_X + OSD_W &&      if(x > 0 && x < OSD_W && y > 0 && y < OSD_H) {
655         y > OSD_Y && y < OSD_Y + OSD_H) {  #ifndef OSD_NO_DPAD
656          but = osm_gps_map_osd_check_dpad(x, y);          but = osd_check_dpad(x, y);
657    #endif
658    
659          if(but == OSD_NONE)          if(but == OSD_NONE)
660              but = osm_gps_map_osd_check_zoom(x, y);              but = osd_check_zoom(x, y);
661      }      }
662    
663      return but;      return but;
664  }  }
665    
666  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);  
 }  
   
667  static void  static void
668  osm_gps_map_osd_dpad_labels(cairo_t *cr, gint x, gint y) {  osd_dpad_labels(cairo_t *cr, gint x, gint y) {
669      /* move reference to dpad center */      /* move reference to dpad center */
670      x += D_RAD;      x += D_RAD;
671      y += D_RAD;      y += D_RAD;
# Line 215  osm_gps_map_osd_dpad_labels(cairo_t *cr, Line 688  osm_gps_map_osd_dpad_labels(cairo_t *cr,
688          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]);
689      }      }
690  }  }
691    #endif
692    
693  /* draw the sattelite dish icon in the center of the dpad */  #ifdef OSD_GPS_BUTTON
694  #define GPS_V0  (D_RAD/8)  /* draw the satellite dish icon in the center of the dpad */
695    #define GPS_V0  (D_RAD/7)
696  #define GPS_V1  (D_RAD/10)  #define GPS_V1  (D_RAD/10)
697  #define GPS_V2  (D_RAD/5)  #define GPS_V2  (D_RAD/5)
698    
699  /* draw a satellite receiver dish */  /* draw a satellite receiver dish */
700    /* this is either drawn in the center of the dpad (if present) */
701    /* or in the middle of the zoom area */
702  static void  static void
703  osm_gps_map_osd_dpad_gps(cairo_t *cr, gint x, gint y) {  osd_dpad_gps(cairo_t *cr, gint x, gint y) {
704      /* move reference to dpad center */      /* move reference to dpad center */
705      x += D_RAD;      x += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD * 3;
706      y += D_RAD + GPS_V0;      y += (1-Z_GPS) * D_RAD + Z_GPS * Z_RAD + GPS_V0;
707    
708      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);      cairo_move_to (cr, x-GPS_V0, y+GPS_V0);
709      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 718  osm_gps_map_osd_dpad_gps(cairo_t *cr, gi
718      cairo_move_to (cr, x, y-GPS_V2);      cairo_move_to (cr, x, y-GPS_V2);
719      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);      cairo_rel_line_to (cr, +GPS_V1, -GPS_V1);
720  }  }
721    #endif
722    
723  #define Z_LEN  (2*Z_RAD/3)  #define Z_LEN  (2*Z_RAD/3)
724    
725  static void  static void
726  osm_gps_map_osd_zoom_labels(cairo_t *cr, gint x, gint y) {  osd_zoom_labels(cairo_t *cr, gint x, gint y) {
727      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);      cairo_move_to (cr, x + Z_LEFT  - Z_LEN, y + Z_MID);
728      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_LEFT  + Z_LEN, y + Z_MID);
729    
# Line 255  osm_gps_map_osd_zoom_labels(cairo_t *cr, Line 733  osm_gps_map_osd_zoom_labels(cairo_t *cr,
733      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);      cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID);
734  }  }
735    
736    #ifdef OSD_COORDINATES
737    #define OSD_COORDINATES_W  100
738    #define OSD_COORDINATES_H   50
739    
740  static void  static void
741  osm_gps_map_osd_labels(cairo_t *cr, gint width, gboolean enabled) {  osd_render_coordinates(osm_gps_map_osd_t *osd)
742      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);  {
743      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
744      cairo_set_line_width (cr, width);  
745        /* first fill with transparency */
746        cairo_t *cr = cairo_create(priv->coordinates);
747        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
748        //    cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
749        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
750        cairo_paint(cr);
751        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
752    
753        cairo_destroy(cr);
754    }
755    #endif  // OSD_COORDINATES
756    
757    #ifdef OSD_CROSSHAIR
758    
759    #ifndef OSD_CROSSHAIR_RADIUS
760    #define OSD_CROSSHAIR_RADIUS 10
761    #endif
762    
763    #define OSD_CROSSHAIR_TICK  (OSD_CROSSHAIR_RADIUS/2)
764    #define OSD_CROSSHAIR_BORDER (OSD_CROSSHAIR_TICK + OSD_CROSSHAIR_RADIUS/4)
765    #define OSD_CROSSHAIR_W  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
766    #define OSD_CROSSHAIR_H  ((OSD_CROSSHAIR_RADIUS+OSD_CROSSHAIR_BORDER)*2)
767    
768    static void
769    osd_render_crosshair_shape(cairo_t *cr) {
770        cairo_arc (cr, OSD_CROSSHAIR_W/2, OSD_CROSSHAIR_H/2,
771                   OSD_CROSSHAIR_RADIUS, 0,  2*M_PI);
772    
773        cairo_move_to (cr, OSD_CROSSHAIR_W/2 - OSD_CROSSHAIR_RADIUS,
774                       OSD_CROSSHAIR_H/2);
775        cairo_rel_line_to (cr, -OSD_CROSSHAIR_TICK, 0);
776        cairo_move_to (cr, OSD_CROSSHAIR_W/2 + OSD_CROSSHAIR_RADIUS,
777                       OSD_CROSSHAIR_H/2);
778        cairo_rel_line_to (cr,  OSD_CROSSHAIR_TICK, 0);
779    
780        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
781                       OSD_CROSSHAIR_H/2 - OSD_CROSSHAIR_RADIUS);
782        cairo_rel_line_to (cr, 0, -OSD_CROSSHAIR_TICK);
783        cairo_move_to (cr, OSD_CROSSHAIR_W/2,
784                       OSD_CROSSHAIR_H/2 + OSD_CROSSHAIR_RADIUS);
785        cairo_rel_line_to (cr, 0, OSD_CROSSHAIR_TICK);
786    
787      cairo_stroke (cr);      cairo_stroke (cr);
788  }  }
789    
790  static void  static void
791  osm_gps_map_osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
792      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);  {
793      cairo_set_line_width (cr, width);      osd_priv_t *priv = (osd_priv_t*)osd->priv;
794    
795        /* first fill with transparency */
796        cairo_t *cr = cairo_create(priv->crosshair);
797        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
798        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 0.0);
799        //    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
800        cairo_paint(cr);
801        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
802    
803        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
804    
805        cairo_set_source_rgba (cr, 1.0, 1.0, 1.0, 0.5);
806        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/2);
807        osd_render_crosshair_shape(cr);
808    
809        cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 0.5);
810        cairo_set_line_width (cr, OSD_CROSSHAIR_RADIUS/4);
811        osd_render_crosshair_shape(cr);
812    
813        cairo_destroy(cr);
814    }
815    #endif
816    
817    #ifdef OSD_SCALE
818    
819    #ifndef OSD_SCALE_FONT_SIZE
820    #define OSD_SCALE_FONT_SIZE 12
821    #endif
822    #define OSD_SCALE_W   (10*OSD_SCALE_FONT_SIZE)
823    #define OSD_SCALE_H   (5*OSD_SCALE_FONT_SIZE/2)
824    
825    /* various parameters used to create the scale */
826    #define OSD_SCALE_H2   (OSD_SCALE_H/2)
827    #define OSD_SCALE_TICK (2*OSD_SCALE_FONT_SIZE/3)
828    #define OSD_SCALE_M    (OSD_SCALE_H2 - OSD_SCALE_TICK)
829    #define OSD_SCALE_I    (OSD_SCALE_H2 + OSD_SCALE_TICK)
830    #define OSD_SCALE_FD   (OSD_SCALE_FONT_SIZE/4)
831    
832    static void
833    osd_render_scale(osm_gps_map_osd_t *osd)
834    {
835        osd_priv_t *priv = (osd_priv_t*)osd->priv;
836    
837        /* this only needs to be rendered if the zoom has changed */
838        gint zoom;
839        g_object_get(OSM_GPS_MAP(osd->widget), "zoom", &zoom, NULL);
840        if(zoom == priv->scale_zoom)
841            return;
842    
843        priv->scale_zoom = zoom;
844    
845        float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget));
846    
847        /* first fill with transparency */
848        cairo_t *cr = cairo_create(priv->scale);
849        cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
850        cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0);
851        // pink for testing:    cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2);
852        cairo_paint(cr);
853        cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
854    
855        /* determine the size of the scale width in meters */
856        float width = (OSD_SCALE_W-OSD_SCALE_FONT_SIZE/6) * m_per_pix;
857    
858        /* scale this to useful values */
859        int exp = logf(width)*M_LOG10E;
860        int mant = width/pow(10,exp);
861        int width_metric = mant * pow(10,exp);
862        char *dist_str = NULL;
863        if(width_metric<1000)
864            dist_str = g_strdup_printf("%u m", width_metric);
865        else
866            dist_str = g_strdup_printf("%u km", width_metric/1000);
867        width_metric /= m_per_pix;
868    
869        /* and now the hard part: scale for useful imperial values :-( */
870        /* try to convert to feet, 1ft == 0.3048 m */
871        width /= 0.3048;
872        float imp_scale = 0.3048;
873        char *dist_imp_unit = "ft";
874    
875        if(width >= 100) {
876            /* 1yd == 3 feet */
877            width /= 3.0;
878            imp_scale *= 3.0;
879            dist_imp_unit = "yd";
880    
881            if(width >= 1760.0) {
882                /* 1mi == 1760 yd */
883                width /= 1760.0;
884                imp_scale *= 1760.0;
885                dist_imp_unit = "mi";
886            }
887        }
888    
889        /* also convert this to full tens/hundreds */
890        exp = logf(width)*M_LOG10E;
891        mant = width/pow(10,exp);
892        int width_imp = mant * pow(10,exp);
893        char *dist_str_imp = g_strdup_printf("%u %s", width_imp, dist_imp_unit);
894    
895        /* convert back to pixels */
896        width_imp *= imp_scale;
897        width_imp /= m_per_pix;
898    
899        cairo_select_font_face (cr, "Sans",
900                                CAIRO_FONT_SLANT_NORMAL,
901                                CAIRO_FONT_WEIGHT_BOLD);
902        cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE);
903        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
904    
905        cairo_text_extents_t extents;
906        cairo_text_extents (cr, dist_str, &extents);
907    
908        cairo_set_source_rgb(cr, 1.0, 1.0, 1.0);
909        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
910        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
911        cairo_text_path (cr, dist_str);
912      cairo_stroke (cr);      cairo_stroke (cr);
913        cairo_move_to (cr, 2*OSD_SCALE_FD,
914                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
915        cairo_text_path (cr, dist_str_imp);
916        cairo_stroke (cr);
917    
918        cairo_set_source_rgb(cr, 0.0, 0.0, 0.0);
919        cairo_move_to (cr, 2*OSD_SCALE_FD, OSD_SCALE_H2-OSD_SCALE_FD);
920        cairo_show_text (cr, dist_str);
921        cairo_move_to (cr, 2*OSD_SCALE_FD,
922                       OSD_SCALE_H2+OSD_SCALE_FD + extents.height);
923        cairo_show_text (cr, dist_str_imp);
924    
925        g_free(dist_str);
926        g_free(dist_str_imp);
927    
928        /* draw white line */
929        cairo_set_line_cap  (cr, CAIRO_LINE_CAP_ROUND);
930        cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0);
931        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/3);
932        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
933        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
934        cairo_rel_line_to (cr, width_metric, 0);
935        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
936        cairo_stroke(cr);
937        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
938        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
939        cairo_rel_line_to (cr, width_imp, 0);
940        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
941        cairo_stroke(cr);
942    
943        /* draw black line */
944        cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0);
945        cairo_set_line_width (cr, OSD_SCALE_FONT_SIZE/6);
946        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_M);
947        cairo_rel_line_to (cr, 0,  OSD_SCALE_TICK);
948        cairo_rel_line_to (cr, width_metric, 0);
949        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
950        cairo_stroke(cr);
951        cairo_move_to (cr, OSD_SCALE_FONT_SIZE/6, OSD_SCALE_I);
952        cairo_rel_line_to (cr, 0, -OSD_SCALE_TICK);
953        cairo_rel_line_to (cr, width_imp, 0);
954        cairo_rel_line_to (cr, 0, +OSD_SCALE_TICK);
955        cairo_stroke(cr);
956    
957        cairo_destroy(cr);
958  }  }
959    #endif
960    
961  static void  static void
962  osm_gps_map_osd_render(osm_gps_map_osd_t *osd) {  osd_render(osm_gps_map_osd_t *osd)
963    {
964      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
965    
966    #ifndef OSD_COLOR
967        GdkColor bg = GTK_WIDGET(osd->widget)->style->bg[GTK_STATE_NORMAL];
968        GdkColor fg = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_NORMAL];
969        GdkColor da = GTK_WIDGET(osd->widget)->style->fg[GTK_STATE_INSENSITIVE];
970    #endif
971    
972      /* first fill with transparency */      /* first fill with transparency */
973      cairo_t *cr = cairo_create(priv->overlay);      cairo_t *cr = cairo_create(priv->overlay);
974      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);      cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE);
975      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);
976      cairo_paint(cr);      cairo_paint(cr);
   
977      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);      cairo_set_operator(cr, CAIRO_OPERATOR_OVER);
978    
979      /* --------- draw zoom and dpad shape shadow ----------- */      /* --------- draw zoom and dpad shape shadow ----------- */
980      gint x = 0, y = 0;  #ifdef OSD_SHADOW_ENABLE
981        osd_zoom_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
982      osm_gps_map_osd_zoom_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_shape_shadow(cr);
983      osm_gps_map_osd_shape_shadow(cr);  #ifndef OSD_NO_DPAD
984      osm_gps_map_osd_dpad_shape(cr, x + OSD_SHADOW, y + OSD_SHADOW);      osd_dpad_shape(cr, 1+OSD_SHADOW, 1+OSD_SHADOW);
985      osm_gps_map_osd_shape_shadow(cr);      osd_shape_shadow(cr);
986    #endif
987    #endif
988    
989      /* --------- draw zoom and dpad shape ----------- */      /* --------- draw zoom and dpad shape ----------- */
990    
991      osm_gps_map_osd_zoom_shape(cr, x, y);      osd_zoom_shape(cr, 1, 1);
992      osm_gps_map_osd_shape(cr);  #ifndef OSD_COLOR
993      osm_gps_map_osd_dpad_shape(cr, x, y);      osd_shape(cr, &bg, &fg);
994      osm_gps_map_osd_shape(cr);  #else
995        osd_shape(cr);
996    #endif
997    #ifndef OSD_NO_DPAD
998        osd_dpad_shape(cr, 1, 1);
999    #ifndef OSD_COLOR
1000        osd_shape(cr, &bg, &fg);
1001    #else
1002        osd_shape(cr);
1003    #endif
1004    #endif
1005    
1006      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1007    
1008      osm_gps_map_osd_zoom_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifdef OSD_SHADOW_ENABLE
1009      osm_gps_map_osd_dpad_labels(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
1010      osm_gps_map_osd_labels_shadow(cr, Z_RAD/3, TRUE);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1011      osm_gps_map_osd_dpad_gps(cr, x + OSD_LBL_SHADOW, y + OSD_LBL_SHADOW);  #ifndef OSD_NO_DPAD
1012      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);
1013    #endif
1014      osm_gps_map_osd_zoom_labels(cr, x, y);      cairo_stroke(cr);
1015      osm_gps_map_osd_dpad_labels(cr, x, y);  #ifdef OSD_GPS_BUTTON
1016      osm_gps_map_osd_labels(cr, Z_RAD/3, TRUE);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1017      osm_gps_map_osd_dpad_gps(cr, x, y);      osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1018      osm_gps_map_osd_labels(cr, Z_RAD/6, osd->cb != NULL);      cairo_stroke(cr);
1019    #endif
1020    #endif
1021    
1022    #ifndef OSD_COLOR
1023        osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1024    #else
1025        osd_labels(cr, Z_RAD/3, TRUE);
1026    #endif
1027        osd_zoom_labels(cr, 1, 1);
1028    #ifndef OSD_NO_DPAD
1029        osd_dpad_labels(cr, 1, 1);
1030    #endif
1031        cairo_stroke(cr);
1032    
1033    #ifndef OSD_COLOR
1034        osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1035    #else
1036        osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1037    #endif
1038    #ifdef OSD_GPS_BUTTON
1039        osd_dpad_gps(cr, 1, 1);
1040    #endif
1041        cairo_stroke(cr);
1042    
1043      cairo_destroy(cr);      cairo_destroy(cr);
 }  
1044    
1045  static void  #ifdef OSD_SOURCE_SEL
1046  osm_gps_map_osd_draw(osm_gps_map_osd_t *osd, gint xoffset, gint yoffset)      osd_render_source_sel(osd);
1047  {  #endif
     osd_priv_t *priv = (osd_priv_t*)osd->priv;  
1048    
1049      /* backup previous contents */  #ifdef OSD_SCALE
1050      if(!priv->backup)      osd_render_scale(osd);
1051          priv->backup = gdk_pixmap_new(osd->pixmap, OSD_W+2, OSD_H+2, -1);  #endif
1052    
1053      gint x = OSD_X + xoffset;  #ifdef OSD_CROSSHAIR
1054      gint y = OSD_Y + yoffset;      osd_render_crosshair(osd);
1055    #endif
1056    
1057      /* create backup of background */  #ifdef OSD_COORDINATES
1058      gdk_draw_drawable(priv->backup,      osd_render_coordinates(osd);
1059          osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],  #endif
1060                        osd->pixmap, x-1, y-1, 0, 0, OSD_W+2, OSD_H+2);  }
1061    
1062      priv->backup_x = x-1;  static void
1063      priv->backup_y = y-1;  osd_draw(osm_gps_map_osd_t *osd, GdkDrawable *drawable)
1064    {
1065        osd_priv_t *priv = (osd_priv_t*)osd->priv;
1066    
1067      /* OSD itself uses some off-screen rendering, so check if the */      /* OSD itself uses some off-screen rendering, so check if the */
1068      /* offscreen buffer is present and create it if not */      /* offscreen buffer is present and create it if not */
1069      if(!priv->overlay) {      if(!priv->overlay) {
1070          /* create overlay ... */          /* create overlay ... */
1071          priv->overlay =          priv->overlay =
1072              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W, OSD_H);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1073    
1074    #ifdef OSD_SOURCE_SEL
1075            /* the initial OSD state is alway not-expanded */
1076            priv->map_source =
1077                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1078                                               OSD_S_W+2, OSD_S_H+2);
1079    #endif
1080    
1081    #ifdef OSD_SCALE
1082            priv->scale =
1083                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1084                                           OSD_SCALE_W, OSD_SCALE_H);
1085            priv->scale_zoom = -1;
1086    #endif
1087    
1088    #ifdef OSD_CROSSHAIR
1089            priv->crosshair =
1090                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1091                                           OSD_CROSSHAIR_W, OSD_CROSSHAIR_H);
1092    #endif
1093    
1094    #ifdef OSD_COORDINATES
1095            priv->coordinates =
1096                cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1097                                           OSD_COORDINATES_W, OSD_COORDINATES_H);
1098    #endif
1099    
1100          /* ... and render it */          /* ... and render it */
1101          osm_gps_map_osd_render(osd);          osd_render(osd);
1102      }      }
1103    
1104      // now draw this onto the original context      // now draw this onto the original context
1105      cairo_t *cr = gdk_cairo_create(osd->pixmap);      cairo_t *cr = gdk_cairo_create(drawable);
1106      cairo_set_source_surface(cr, priv->overlay, x, y);  
1107        int x, y;
1108    
1109    #ifdef OSD_SCALE
1110        x =  OSD_X;
1111        y = -OSD_Y;
1112        if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W;
1113        if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H;
1114    
1115        cairo_set_source_surface(cr, priv->scale, x, y);
1116      cairo_paint(cr);      cairo_paint(cr);
1117      cairo_destroy(cr);  #endif
 }  
1118    
1119  static void  #ifdef OSD_CROSSHAIR
1120  osm_gps_map_osd_restore (osm_gps_map_osd_t *osd)      x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1121  {      y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1122      osd_priv_t *priv = (osd_priv_t*)osd->priv;  
1123        cairo_set_source_surface(cr, priv->crosshair, x, y);
1124        cairo_paint(cr);
1125    #endif
1126    
1127    #ifdef OSD_COORDINATES
1128        x = -OSD_X;
1129        y = -OSD_Y;
1130        if(x < 0) x += osd->widget->allocation.width - OSD_COORDINATES_W;
1131        if(y < 0) y += osd->widget->allocation.height - OSD_COORDINATES_H;
1132    
1133      /* restore backup of previous contents */      cairo_set_source_surface(cr, priv->coordinates, x, y);
1134      if(priv->backup) {      cairo_paint(cr);
1135          /* create backup of background */  #endif
1136          gdk_draw_drawable(osd->pixmap,  
1137                            osd->widget->style->fg_gc[GTK_WIDGET_STATE(osd->widget)],      x = OSD_X;
1138                            priv->backup, 0, 0,      if(x < 0)
1139                            priv->backup_x, priv->backup_y, OSD_W+2, OSD_H+2);          x += osd->widget->allocation.width - OSD_W;
1140    
1141        y = OSD_Y;
1142        if(y < 0)
1143            y += osd->widget->allocation.height - OSD_H;
1144    
1145        cairo_set_source_surface(cr, priv->overlay, x, y);
1146        cairo_paint(cr);
1147    
1148    #ifdef OSD_SOURCE_SEL
1149        if(!priv->handler_id) {
1150            /* the OSD source selection is not being animated */
1151            if(!priv->expanded)
1152                x = osd->widget->allocation.width - OSD_S_W;
1153            else
1154                x = osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X;
1155        } else
1156            x = priv->shift;
1157    
1158        y = OSD_S_Y;
1159        if(OSD_S_Y < 0) {
1160            if(!priv->expanded)
1161                y = osd->widget->allocation.height - OSD_S_H + OSD_S_Y;
1162            else
1163                y = osd->widget->allocation.height - OSD_S_EXP_H + OSD_S_Y;
1164      }      }
1165    
1166        cairo_set_source_surface(cr, priv->map_source, x, y);
1167        cairo_paint(cr);
1168    #endif
1169    
1170        cairo_destroy(cr);
1171  }  }
1172    
1173  static void  static void
1174  osm_gps_map_osd_free(osm_gps_map_osd_t *osd)  osd_free(osm_gps_map_osd_t *osd)
1175  {  {
1176      osd_priv_t *priv = (osd_priv_t *)(osd->priv);      osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1177    
     if (priv->backup)  
         g_object_unref(priv->backup);  
   
1178      if (priv->overlay)      if (priv->overlay)
1179           cairo_surface_destroy(priv->overlay);           cairo_surface_destroy(priv->overlay);
1180    
1181    #ifdef OSD_SOURCE_SEL
1182        if(priv->handler_id)
1183            gtk_timeout_remove(priv->handler_id);
1184    
1185        if (priv->map_source)
1186             cairo_surface_destroy(priv->map_source);
1187    #endif
1188    
1189    #ifdef OSD_SCALE
1190        if (priv->scale)
1191             cairo_surface_destroy(priv->scale);
1192    #endif
1193    
1194    #ifdef OSD_CROSSHAIR
1195        if (priv->crosshair)
1196             cairo_surface_destroy(priv->crosshair);
1197    #endif
1198    
1199    #ifdef OSD_COORDINATES
1200        if (priv->coordinates)
1201             cairo_surface_destroy(priv->coordinates);
1202    #endif
1203    
1204      g_free(priv);      g_free(priv);
1205  }  }
1206    
1207    static gboolean
1208    osd_busy(osm_gps_map_osd_t *osd)
1209    {
1210    #ifdef OSD_SOURCE_SEL
1211        osd_priv_t *priv = (osd_priv_t *)(osd->priv);
1212        return (priv->handler_id != 0);
1213    #else
1214        return FALSE;
1215    #endif
1216    }
1217    
1218  static osm_gps_map_osd_t osd_classic = {  static osm_gps_map_osd_t osd_classic = {
1219      .restore    = osm_gps_map_osd_restore,      .widget     = NULL,
1220      .draw       = osm_gps_map_osd_draw,  
1221      .check      = osm_gps_map_osd_check,      .draw       = osd_draw,
1222      .render     = osm_gps_map_osd_render,      .check      = osd_check,
1223      .free       = osm_gps_map_osd_free,      .render     = osd_render,
1224        .free       = osd_free,
1225        .busy       = osd_busy,
1226    
1227      .cb         = NULL,      .cb         = NULL,
1228      .data       = NULL,      .data       = NULL,
# Line 404  osm_gps_map_osd_classic_init(OsmGpsMap * Line 1241  osm_gps_map_osd_classic_init(OsmGpsMap *
1241      osm_gps_map_register_osd(map, &osd_classic);      osm_gps_map_register_osd(map, &osd_classic);
1242  }  }
1243    
1244    #ifdef OSD_GPS_BUTTON
1245  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 */
1246    /* but instead are to be used by the main application */
1247    void osm_gps_map_osd_enable_gps (OsmGpsMap *map, OsmGpsMapOsdCallback cb,
1248                                     gpointer data) {
1249      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);      osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
   
1250      g_return_if_fail (osd);      g_return_if_fail (osd);
1251    
1252      osd->cb = cb;      osd->cb = cb;
# Line 419  void osm_gps_map_osd_enable_gps (OsmGpsM Line 1258  void osm_gps_map_osd_enable_gps (OsmGpsM
1258    
1259      osm_gps_map_redraw(map);      osm_gps_map_redraw(map);
1260  }  }
1261    #endif
1262    
1263    osd_button_t
1264    osm_gps_map_osd_check(OsmGpsMap *map, gint x, gint y) {
1265        osm_gps_map_osd_t *osd = osm_gps_map_osd_get(map);
1266        g_return_val_if_fail (osd, OSD_NONE);
1267    
1268        return osd_check(osd, x, y);
1269    }
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