1 ! Copyright (C) 2008 Matthew Willis
2 ! See http://factorcode.org/license.txt for BSD license.
4 ! these samples are a subset of the samples on
5 ! http://cairographics.org/samples/
6 USING: cairo cairo.lib locals math.constants math
7 io.backend kernel alien.c-types libc namespaces ;
17 cr 10.0 cairo_set_line_width
18 cr xc yc radius angle1 angle2 cairo_arc
22 cr 1 0.2 0.2 0.6 cairo_set_source_rgba
23 cr 6.0 cairo_set_line_width
25 cr xc yc 10.0 0 2 pi * cairo_arc
28 cr xc yc radius angle1 angle1 cairo_arc
29 cr xc yc cairo_line_to
30 cr xc yc radius angle2 angle2 cairo_arc
31 cr xc yc cairo_line_to
36 cr 128 128 76.8 0 2 pi * cairo_arc
40 cr 0 0 256 256 cairo_rectangle
42 cr 0 1 0 cairo_set_source_rgb
44 cr 256 256 cairo_line_to
45 cr 256 0 cairo_move_to
46 cr 0 256 cairo_line_to
47 cr 10 cairo_set_line_width
51 [let* | png [ "resource:misc/icons/Factor_128x128.png"
52 normalize-path cairo_image_surface_create_from_png ]
53 w [ png cairo_image_surface_get_width ]
54 h [ png cairo_image_surface_get_height ] |
55 cr 128 128 76.8 0 2 pi * cairo_arc
59 cr 192.0 w / 192.0 h / cairo_scale
60 cr png 32 32 cairo_set_source_surface
62 png cairo_surface_destroy
66 [let | dashes [ { 50 10 10 10 } >c-double-array ]
68 cr dashes ndash -50 cairo_set_dash
69 cr 10 cairo_set_line_width
70 cr 128.0 25.6 cairo_move_to
71 cr 230.4 230.4 cairo_line_to
72 cr -102.4 0 cairo_rel_line_to
73 cr 51.2 230.4 51.2 128.0 128.0 128.0 cairo_curve_to
78 [let | pat [ 0 0 0 256 cairo_pattern_create_linear ]
79 radial [ 115.2 102.4 25.6 102.4 102.4 128.0
80 cairo_pattern_create_radial ] |
81 pat 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
82 pat 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
83 cr 0 0 256 256 cairo_rectangle
84 cr pat cairo_set_source
86 pat cairo_pattern_destroy
88 radial 0 1 1 1 1 cairo_pattern_add_color_stop_rgba
89 radial 1 0 0 0 1 cairo_pattern_add_color_stop_rgba
90 cr radial cairo_set_source
91 cr 128.0 128.0 76.8 0 2 pi * cairo_arc
93 radial cairo_pattern_destroy
97 cr "Serif" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_BOLD
98 cairo_select_font_face
99 cr 50 cairo_set_font_size
100 cr 10 135 cairo_move_to
101 cr "Hello" cairo_show_text
103 cr 70 165 cairo_move_to
104 cr "factor" cairo_text_path
105 cr 0.5 0.5 1 cairo_set_source_rgb
106 cr cairo_fill_preserve
107 cr 0 0 0 cairo_set_source_rgb
108 cr 2.56 cairo_set_line_width
112 cr 1 0.2 0.2 0.6 cairo_set_source_rgba
113 cr 10 135 5.12 0 2 pi * cairo_arc
115 cr 70 165 5.12 0 2 pi * cairo_arc
119 cr "Serif" CAIRO_FONT_SLANT_NORMAL CAIRO_FONT_WEIGHT_NORMAL
120 cairo_select_font_face
121 cr 50 cairo_set_font_size
122 "cairo_text_extents_t" malloc-object
123 cr B{ 230 151 165 230 156 172 232 170 158 } pick cairo_text_extents
125 [ cairo_text_extents_t-width 2 / ]
126 [ cairo_text_extents_t-x_bearing ] bi +
128 [ cairo_text_extents_t-height 2 / ]
129 [ cairo_text_extents_t-y_bearing ] bi +
130 128 swap - cairo_move_to
132 cr B{ 230 151 165 230 156 172 232 170 158 } cairo_show_text
134 cr 1 0.2 0.2 0.6 cairo_set_source_rgba
135 cr 6 cairo_set_line_width
136 cr 128 0 cairo_move_to
137 cr 0 256 cairo_rel_line_to
138 cr 0 128 cairo_move_to
139 cr 256 0 cairo_rel_line_to