25 |
/* OSD_DIAMETER */ |
/* OSD_DIAMETER */ |
26 |
/* OSD_X, OSD_Y */ |
/* OSD_X, OSD_Y */ |
27 |
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|
28 |
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#define OSD_SCALE |
29 |
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|
30 |
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#define OSD_SCALE_W 120 |
31 |
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#define OSD_SCALE_H 20 |
32 |
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33 |
#ifndef USE_CAIRO |
#ifndef USE_CAIRO |
34 |
#error "OSD control display lacks a non-cairo implementation!" |
#error "OSD control display lacks a non-cairo implementation!" |
35 |
#endif |
#endif |
44 |
/* the offscreen representation of the OSD */ |
/* the offscreen representation of the OSD */ |
45 |
cairo_surface_t *overlay; |
cairo_surface_t *overlay; |
46 |
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|
47 |
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#ifdef OSD_SCALE |
48 |
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cairo_surface_t *scale; |
49 |
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#endif |
50 |
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51 |
#ifdef OSD_SOURCE_SEL |
#ifdef OSD_SOURCE_SEL |
52 |
/* values to handle the "source" menu */ |
/* values to handle the "source" menu */ |
53 |
cairo_surface_t *map_source; |
cairo_surface_t *map_source; |
451 |
|
|
452 |
int w = OSD_S_W, h = OSD_S_H; |
int w = OSD_S_W, h = OSD_S_H; |
453 |
if(priv->expanded) { |
if(priv->expanded) { |
|
/* ... and right of it the waypoint id */ |
|
454 |
cairo_text_extents_t extents; |
cairo_text_extents_t extents; |
455 |
|
|
456 |
/* determine content size */ |
/* determine content size */ |
484 |
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, w+2, h+2); |
485 |
|
|
486 |
osd_render_source_sel(osd); |
osd_render_source_sel(osd); |
|
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|
487 |
} |
} |
488 |
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|
489 |
#define OSD_HZ 15 |
#define OSD_HZ 15 |
727 |
cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
cairo_line_to (cr, x + Z_RIGHT + Z_LEN, y + Z_MID); |
728 |
} |
} |
729 |
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|
730 |
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static char * |
731 |
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dist_str_metric(int dist) |
732 |
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{ |
733 |
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if(dist<1000) |
734 |
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return g_strdup_printf("%u m", dist); |
735 |
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|
736 |
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return g_strdup_printf("%u km", dist/1000); |
737 |
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} |
738 |
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|
739 |
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#define OSD_SCALE_FONT_SIZE 12 |
740 |
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|
741 |
static void |
static void |
742 |
osd_render(osm_gps_map_osd_t *osd) { |
osd_render_scale(osm_gps_map_osd_t *osd) |
743 |
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{ |
744 |
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osd_priv_t *priv = (osd_priv_t*)osd->priv; |
745 |
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float m_per_pix = osm_gps_map_get_scale(OSM_GPS_MAP(osd->widget)); |
746 |
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|
747 |
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/* first fill with transparency */ |
748 |
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cairo_t *cr = cairo_create(priv->scale); |
749 |
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cairo_set_operator(cr, CAIRO_OPERATOR_SOURCE); |
750 |
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cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.0); |
751 |
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// cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, 0.2); |
752 |
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cairo_paint(cr); |
753 |
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cairo_set_operator(cr, CAIRO_OPERATOR_OVER); |
754 |
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|
755 |
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/* determine the size of the scale width in meters */ |
756 |
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float width = (OSD_SCALE_W-2) * m_per_pix; |
757 |
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printf("%d pixels is %f m\n", OSD_SCALE_W-2, width); |
758 |
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|
759 |
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/* scale this to useful values */ |
760 |
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int exp = logf(width)*M_LOG10E; |
761 |
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int mant = width/pow(10,exp); |
762 |
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int width_metric = mant * pow(10,exp); |
763 |
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char *dist_str = dist_str_metric(width_metric); |
764 |
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width_metric /= m_per_pix; |
765 |
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|
766 |
|
/* and now the hard part: scale for useful imperial values :-( */ |
767 |
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/* try to convert to feet, 1ft == 0.3048 m */ |
768 |
|
width /= 0.3048; |
769 |
|
float imp_scale = 0.3048; |
770 |
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char *dist_imp_unit = "ft"; |
771 |
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|
772 |
|
if(width >= 100) { |
773 |
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/* 1yd == 3 feet */ |
774 |
|
width /= 3.0; |
775 |
|
imp_scale *= 3.0; |
776 |
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dist_imp_unit = "yd"; |
777 |
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|
778 |
|
if(width >= 1760.0) { |
779 |
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/* 1mi == 1760 yd */ |
780 |
|
width /= 1760.0; |
781 |
|
imp_scale *= 1760.0; |
782 |
|
dist_imp_unit = "mi"; |
783 |
|
} |
784 |
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} |
785 |
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|
786 |
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printf("this is %f %s\n", width, dist_imp_unit); |
787 |
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printf("this is %f pixels\n", width * imp_scale / m_per_pix); |
788 |
|
|
789 |
|
cairo_select_font_face (cr, "Sans", |
790 |
|
CAIRO_FONT_SLANT_NORMAL, |
791 |
|
CAIRO_FONT_WEIGHT_BOLD); |
792 |
|
cairo_set_font_size (cr, OSD_SCALE_FONT_SIZE); |
793 |
|
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
794 |
|
|
795 |
|
cairo_text_extents_t extents; |
796 |
|
cairo_text_extents (cr, dist_str, &extents); |
797 |
|
|
798 |
|
cairo_set_source_rgb(cr, 1.0, 1.0, 1.0); |
799 |
|
cairo_move_to (cr, OSD_SCALE_FONT_SIZE/3, OSD_SCALE_FONT_SIZE); |
800 |
|
cairo_text_path (cr, dist_str); |
801 |
|
cairo_set_line_width (cr, 2); |
802 |
|
cairo_stroke (cr); |
803 |
|
|
804 |
|
cairo_set_source_rgb(cr, 0.0, 0.0, 0.0); |
805 |
|
cairo_move_to (cr, OSD_SCALE_FONT_SIZE/3, OSD_SCALE_FONT_SIZE); |
806 |
|
cairo_show_text (cr, dist_str); |
807 |
|
|
808 |
|
/* draw white line */ |
809 |
|
cairo_set_line_cap (cr, CAIRO_LINE_CAP_ROUND); |
810 |
|
cairo_set_source_rgba(cr, 1.0, 1.0, 1.0, 1.0); |
811 |
|
cairo_set_line_width (cr, 4); |
812 |
|
cairo_move_to (cr, 2, 2*OSD_SCALE_FONT_SIZE/3); |
813 |
|
cairo_rel_line_to (cr, 0, 2*OSD_SCALE_FONT_SIZE/3); |
814 |
|
cairo_rel_line_to (cr, width_metric, 0); |
815 |
|
cairo_rel_line_to (cr, 0, -2*OSD_SCALE_FONT_SIZE/3); |
816 |
|
cairo_stroke(cr); |
817 |
|
|
818 |
|
/* draw black line */ |
819 |
|
cairo_set_source_rgba(cr, 0.0, 0.0, 0.0, 1.0); |
820 |
|
cairo_set_line_width (cr, 2); |
821 |
|
cairo_move_to (cr, 2, 2*OSD_SCALE_FONT_SIZE/3); |
822 |
|
cairo_rel_line_to (cr, 0, 2*OSD_SCALE_FONT_SIZE/3); |
823 |
|
cairo_rel_line_to (cr, width_metric, 0); |
824 |
|
cairo_rel_line_to (cr, 0, -2*OSD_SCALE_FONT_SIZE/3); |
825 |
|
cairo_stroke(cr); |
826 |
|
|
827 |
|
/* xyz */ |
828 |
|
|
829 |
|
cairo_destroy(cr); |
830 |
|
} |
831 |
|
|
832 |
|
static void |
833 |
|
osd_render(osm_gps_map_osd_t *osd) |
834 |
|
{ |
835 |
osd_priv_t *priv = (osd_priv_t*)osd->priv; |
osd_priv_t *priv = (osd_priv_t*)osd->priv; |
836 |
|
|
837 |
#ifndef OSD_COLOR |
#ifndef OSD_COLOR |
916 |
#ifdef OSD_SOURCE_SEL |
#ifdef OSD_SOURCE_SEL |
917 |
osd_render_source_sel(osd); |
osd_render_source_sel(osd); |
918 |
#endif |
#endif |
919 |
|
|
920 |
|
#ifdef OSD_SCALE |
921 |
|
osd_render_scale(osd); |
922 |
|
#endif |
923 |
} |
} |
924 |
|
|
925 |
static void |
static void |
941 |
OSD_S_W+2, OSD_S_H+2); |
OSD_S_W+2, OSD_S_H+2); |
942 |
#endif |
#endif |
943 |
|
|
944 |
|
#ifdef OSD_SCALE |
945 |
|
priv->scale = |
946 |
|
cairo_image_surface_create(CAIRO_FORMAT_ARGB32, |
947 |
|
OSD_SCALE_W+2, OSD_SCALE_H+2); |
948 |
|
#endif |
949 |
|
|
950 |
/* ... and render it */ |
/* ... and render it */ |
951 |
osd_render(osd); |
osd_render(osd); |
952 |
} |
} |
986 |
cairo_paint(cr); |
cairo_paint(cr); |
987 |
#endif |
#endif |
988 |
|
|
989 |
|
#ifdef OSD_SCALE |
990 |
|
x = OSD_X; |
991 |
|
y = -OSD_Y; |
992 |
|
if(x < 0) x += osd->widget->allocation.width - OSD_SCALE_W; |
993 |
|
if(y < 0) y += osd->widget->allocation.height - OSD_SCALE_H; |
994 |
|
|
995 |
|
cairo_set_source_surface(cr, priv->scale, x, y); |
996 |
|
cairo_paint(cr); |
997 |
|
#endif |
998 |
|
|
999 |
cairo_destroy(cr); |
cairo_destroy(cr); |
1000 |
} |
} |
1001 |
|
|
1015 |
cairo_surface_destroy(priv->map_source); |
cairo_surface_destroy(priv->map_source); |
1016 |
#endif |
#endif |
1017 |
|
|
1018 |
|
#ifdef OSD_SCALE |
1019 |
|
if (priv->scale) |
1020 |
|
cairo_surface_destroy(priv->scale); |
1021 |
|
#endif |
1022 |
|
|
1023 |
g_free(priv); |
g_free(priv); |
1024 |
} |
} |
1025 |
|
|