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

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revision 86 by harbaum, Sun Aug 30 19:05:44 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()
   
 #define OSD_SOURCE_SEL  
   
 #define OSD_Y  (-10)  
23    
24  /* parameters that can be overwritten from the config file: */  /* parameters that can be overwritten from the config file: */
25  /* OSD_DIAMETER */  /* OSD_DIAMETER */
# Line 38  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      /* the offscreen representation of the OSD */      /* the offscreen representation of the OSD */
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;      cairo_surface_t *map_source;
60      gboolean expanded;      gboolean expanded;
61      gint shift, dir, count;      gint shift, dir, count;
62      gint handler_id;      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 */
# Line 128  osd_labels(cairo_t *cr, gint width, gboo Line 144  osd_labels(cairo_t *cr, gint width, gboo
144      if(enabled)  gdk_cairo_set_source_color(cr, fg);      if(enabled)  gdk_cairo_set_source_color(cr, fg);
145      else         gdk_cairo_set_source_color(cr, disabled);      else         gdk_cairo_set_source_color(cr, disabled);
146      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
147  }  }
148  #else  #else
149  static void  static void
# Line 136  osd_labels(cairo_t *cr, gint width, gboo Line 151  osd_labels(cairo_t *cr, gint width, gboo
151      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);      if(enabled)  cairo_set_source_rgb (cr, OSD_COLOR);
152      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);      else         cairo_set_source_rgb (cr, OSD_COLOR_DISABLED);
153      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
154  }  }
155  #endif  #endif
156    
# Line 145  static void Line 159  static void
159  osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {  osd_labels_shadow(cairo_t *cr, gint width, gboolean enabled) {
160      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);      cairo_set_source_rgba (cr, 0, 0, 0, enabled?0.3:0.15);
161      cairo_set_line_width (cr, width);      cairo_set_line_width (cr, width);
     cairo_stroke (cr);  
162  }  }
163  #endif  #endif
164    
# Line 262  osd_check_zoom(gint x, gint y) { Line 275  osd_check_zoom(gint x, gint y) {
275      return OSD_NONE;      return OSD_NONE;
276  }  }
277    
278    #ifdef OSD_SOURCE_SEL
279    
280  /* place source selection at right border */  /* place source selection at right border */
281  #define OSD_S_RAD (Z_RAD)  #define OSD_S_RAD (Z_RAD)
282  #define OSD_S_X   (-OSD_X)  #define OSD_S_X   (-OSD_X)
# Line 271  osd_check_zoom(gint x, gint y) { Line 286  osd_check_zoom(gint x, gint y) {
286  #define OSD_S_PH  (2 * Z_RAD)  #define OSD_S_PH  (2 * Z_RAD)
287  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)  #define OSD_S_H   (OSD_S_PH + OSD_SHADOW)
288    
289  /* size of usable area when exapnded */  /* size of usable area when expanded */
290  #define OSD_S_AREA_W (200)  #define OSD_S_AREA_W (priv->width)
291  #define OSD_S_AREA_H (200)  #define OSD_S_AREA_H (priv->height)
292  #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)  #define OSD_S_EXP_W  (OSD_S_PW + OSD_S_AREA_W + OSD_SHADOW)
293  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)  #define OSD_S_EXP_H  (OSD_S_AREA_H + OSD_SHADOW)
294    
295  /* internal value to draw the arrow on the "puller" */  /* internal value to draw the arrow on the "puller" */
296  #define OSD_S_D0  (OSD_S_RAD/2)  #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  static void
306  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {  osd_source_shape(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {
307      if(!priv->expanded) {      if(!priv->expanded) {
# Line 305  osd_source_shape(osd_priv_t *priv, cairo Line 327  osd_source_shape(osd_priv_t *priv, cairo
327  }  }
328    
329  static void  static void
330  osd_source_content(osd_priv_t *priv, cairo_t *cr, gint x, gint y) {  osd_source_content(osm_gps_map_osd_t *osd, cairo_t *cr, gint offset) {
331      y += OSD_S_RAD - OSD_S_D0;      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) {      if(!priv->expanded) {
336          /* draw the "puller" open (<) arrow */          /* draw the "puller" open (<) arrow */
337          cairo_move_to (cr, x + OSD_S_RAD + OSD_S_D0/2, y);          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);          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);
339          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
340      } else {      } else {
341          if(OSD_S_Y < 0)          if(OSD_S_Y < 0)
342              y += OSD_S_AREA_H - OSD_S_PH;              py += OSD_S_AREA_H - OSD_S_PH;
343    
344          /* draw the "puller" close (>) arrow */          /* draw the "puller" close (>) arrow */
345          cairo_move_to (cr, x + OSD_S_RAD - OSD_S_D0/2, y);          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);          cairo_rel_line_to (cr, +OSD_S_D0, +OSD_S_D0);
347          cairo_rel_line_to (cr, -OSD_S_D0, +OSD_S_D0);          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    
# Line 354  osd_render_source_sel(osm_gps_map_osd_t Line 431  osd_render_source_sel(osm_gps_map_osd_t
431  #endif  #endif
432    
433  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
     osd_source_content(priv, cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);  
434      osd_labels_shadow(cr, Z_RAD/3, TRUE);      osd_labels_shadow(cr, Z_RAD/3, TRUE);
435        osd_source_content(osd, cr, 1+OSD_LBL_SHADOW);
436        cairo_stroke (cr);
437  #endif  #endif
     osd_source_content(priv, cr, 1, 1);  
438  #ifndef OSD_COLOR  #ifndef OSD_COLOR
439      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
440  #else  #else
441      osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
442  #endif  #endif
443        osd_source_content(osd, cr, 1);
444        cairo_stroke (cr);
445    
446      cairo_destroy(cr);      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  static void
452  osd_source_reallocate(osm_gps_map_osd_t *osd) {  osd_source_reallocate(osm_gps_map_osd_t *osd) {
453      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
454    
455      /* re-allocate offscreen bitmap */      /* re-allocate offscreen bitmap */
456      g_assert (priv->map_source);      g_assert (priv->map_source);
     cairo_surface_destroy(priv->map_source);  
457    
458      int w = OSD_S_W, h = OSD_S_H;      int w = OSD_S_W, h = OSD_S_H;
459      if(priv->expanded) {      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;          w = OSD_S_EXP_W;
485          h = OSD_S_EXP_H;          h = OSD_S_EXP_H;
486      }      }
487    
488        cairo_surface_destroy(priv->map_source);
489      priv->map_source =      priv->map_source =
490          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);          cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2);
491    
492      osd_render_source_sel(osd);      osd_render_source_sel(osd);
   
493  }  }
494    
495  #define OSD_HZ      15  #define OSD_HZ      15
496  #define OSD_TIME    1000  #define OSD_TIME    500
497    
498  static gboolean osd_source_animate(gpointer data) {  static gboolean osd_source_animate(gpointer data) {
499      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;      osm_gps_map_osd_t *osd = (osm_gps_map_osd_t*)data;
# Line 417  static gboolean osd_source_animate(gpoin Line 521  static gboolean osd_source_animate(gpoin
521    
522      /* count runs linearly from 0 to 1000, map this nicely onto a position */      /* count runs linearly from 0 to 1000, map this nicely onto a position */
523    
     /* simple linear mapping */  
     //    priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +  
     //        (diff * priv->count)/1000;  
   
524      /* nicer sinoid mapping */      /* nicer sinoid mapping */
525      float m = 0.5-cos(priv->count * M_PI / 1000.0)/2;      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) +      priv->shift = (osd->widget->allocation.width - OSD_S_EXP_W + OSD_S_X) +
# Line 461  osd_source_toggle(osm_gps_map_osd_t *osd Line 561  osd_source_toggle(osm_gps_map_osd_t *osd
561      priv->handler_id = gtk_timeout_add(OSD_TIME/OSD_HZ, osd_source_animate, osd);      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  static osd_button_t
566  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_source_check(osm_gps_map_osd_t *osd, gint x, gint y) {
567      osd_priv_t *priv = (osd_priv_t*)osd->priv;      osd_priv_t *priv = (osd_priv_t*)osd->priv;
# Line 487  osd_source_check(osm_gps_map_osd_t *osd, Line 588  osd_source_check(osm_gps_map_osd_t *osd,
588              return OSD_BG;              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;      return OSD_NONE;
629  }  }
630    #endif // OSD_SOURCE_SEL
631    
632  static osd_button_t  static osd_button_t
633  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {  osd_check(osm_gps_map_osd_t *osd, gint x, gint y) {
# Line 594  osd_zoom_labels(cairo_t *cr, gint x, gin Line 733  osd_zoom_labels(cairo_t *cr, gint x, gin
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
741    osd_render_coordinates(osm_gps_map_osd_t *osd)
742    {
743        osd_priv_t *priv = (osd_priv_t*)osd->priv;
744    
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);
788    }
789    
790  static void  static void
791  osd_render(osm_gps_map_osd_t *osd) {  osd_render_crosshair(osm_gps_map_osd_t *osd)
792    {
793        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);
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
962    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  #ifndef OSD_COLOR
# Line 641  osd_render(osm_gps_map_osd_t *osd) { Line 1006  osd_render(osm_gps_map_osd_t *osd) {
1006      /* --------- draw zoom and dpad labels --------- */      /* --------- draw zoom and dpad labels --------- */
1007    
1008  #ifdef OSD_SHADOW_ENABLE  #ifdef OSD_SHADOW_ENABLE
1009        osd_labels_shadow(cr, Z_RAD/3, TRUE);
1010      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);      osd_zoom_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1011  #ifndef OSD_NO_DPAD  #ifndef OSD_NO_DPAD
1012      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);      osd_dpad_labels(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1013  #endif  #endif
1014      osd_labels_shadow(cr, Z_RAD/3, TRUE);      cairo_stroke(cr);
1015  #ifdef OSD_GPS_BUTTON  #ifdef OSD_GPS_BUTTON
     osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);  
1016      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);      osd_labels_shadow(cr, Z_RAD/6, osd->cb != NULL);
1017        osd_dpad_gps(cr, 1+OSD_LBL_SHADOW, 1+OSD_LBL_SHADOW);
1018        cairo_stroke(cr);
1019  #endif  #endif
1020  #endif  #endif
1021    
     osd_zoom_labels(cr, 1, 1);  
 #ifndef OSD_NO_DPAD  
     osd_dpad_labels(cr, 1, 1);  
 #endif  
1022  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1023      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);      osd_labels(cr, Z_RAD/3, TRUE, &fg, &da);
1024  #else  #else
1025      osd_labels(cr, Z_RAD/3, TRUE);      osd_labels(cr, Z_RAD/3, TRUE);
1026  #endif  #endif
1027  #ifdef OSD_GPS_BUTTON      osd_zoom_labels(cr, 1, 1);
1028      osd_dpad_gps(cr, 1, 1);  #ifndef OSD_NO_DPAD
1029        osd_dpad_labels(cr, 1, 1);
1030    #endif
1031        cairo_stroke(cr);
1032    
1033  #ifndef OSD_COLOR  #ifndef OSD_COLOR
1034      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);      osd_labels(cr, Z_RAD/6, osd->cb != NULL, &fg, &da);
1035  #else  #else
1036      osd_labels(cr, Z_RAD/6, osd->cb != NULL);      osd_labels(cr, Z_RAD/6, osd->cb != NULL);
1037  #endif  #endif
1038    #ifdef OSD_GPS_BUTTON
1039        osd_dpad_gps(cr, 1, 1);
1040  #endif  #endif
1041        cairo_stroke(cr);
1042    
1043      cairo_destroy(cr);      cairo_destroy(cr);
1044    
1045    #ifdef OSD_SOURCE_SEL
1046      osd_render_source_sel(osd);      osd_render_source_sel(osd);
1047    #endif
1048    
1049    #ifdef OSD_SCALE
1050        osd_render_scale(osd);
1051    #endif
1052    
1053    #ifdef OSD_CROSSHAIR
1054        osd_render_crosshair(osd);
1055    #endif
1056    
1057    #ifdef OSD_COORDINATES
1058        osd_render_coordinates(osd);
1059    #endif
1060  }  }
1061    
1062  static void  static void
# Line 687  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1071  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1071          priv->overlay =          priv->overlay =
1072              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);              cairo_image_surface_create(CAIRO_FORMAT_ARGB32, OSD_W+2, OSD_H+2);
1073    
1074    #ifdef OSD_SOURCE_SEL
1075          /* the initial OSD state is alway not-expanded */          /* the initial OSD state is alway not-expanded */
1076          priv->map_source =          priv->map_source =
1077              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,              cairo_image_surface_create(CAIRO_FORMAT_ARGB32,
1078                                             OSD_S_W+2, OSD_S_H+2);                                             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          osd_render(osd);          osd_render(osd);
# Line 699  osd_draw(osm_gps_map_osd_t *osd, GdkDraw Line 1104  osd_draw(osm_gps_map_osd_t *osd, GdkDraw
1104      // now draw this onto the original context      // now draw this onto the original context
1105      cairo_t *cr = gdk_cairo_create(drawable);      cairo_t *cr = gdk_cairo_create(drawable);
1106    
1107      int x = OSD_X, y = OSD_Y;      int x, y;
     if(OSD_X < 0)  
         x = osd->widget->allocation.width - OSD_W + OSD_X;  
1108    
1109      if(OSD_Y < 0)  #ifdef OSD_SCALE
1110          y = osd->widget->allocation.height - OSD_H + OSD_Y;      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);
1117    #endif
1118    
1119    #ifdef OSD_CROSSHAIR
1120        x = (osd->widget->allocation.width - OSD_CROSSHAIR_W)/2;
1121        y = (osd->widget->allocation.height - OSD_CROSSHAIR_H)/2;
1122    
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        cairo_set_source_surface(cr, priv->coordinates, x, y);
1134        cairo_paint(cr);
1135    #endif
1136    
1137        x = OSD_X;
1138        if(x < 0)
1139            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);      cairo_set_source_surface(cr, priv->overlay, x, y);
1146      cairo_paint(cr);      cairo_paint(cr);
# Line 739  osd_free(osm_gps_map_osd_t *osd) Line 1175  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->handler_id)  
         gtk_timeout_remove(priv->handler_id);  
   
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)      if (priv->map_source)
1186           cairo_surface_destroy(priv->map_source);           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        .widget     = NULL,
1220    
1221      .draw       = osd_draw,      .draw       = osd_draw,
1222      .check      = osd_check,      .check      = osd_check,
1223      .render     = osd_render,      .render     = osd_render,
1224      .free       = osd_free,      .free       = osd_free,
1225        .busy       = osd_busy,
1226    
1227      .cb         = NULL,      .cb         = NULL,
1228      .data       = NULL,      .data       = NULL,
Legend:
Removed from v.86  
changed lines
  Added in v.106