1 | #! perl |
1 | #! perl |
2 | |
2 | |
3 | our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; |
3 | #:META:X_RESOURCE:%.expr:string:background expression |
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4 | #:META:X_RESOURCE:%.enable:boolean:some boolean |
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5 | #:META:X_RESOURCE:%.extra.:value:extra config |
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6 | |
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7 | our $EXPR = 'clip move -X, -Y, load "MagnoliaAlpha.png"'; |
4 | $EXPR = ' |
8 | #$EXPR = ' |
5 | rotate W, H, 50, 50, counter 1/60, repeat_mirror, |
9 | # rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
6 | clip X, Y, W, H, repeat_mirror, |
10 | # clip X, Y, W, H, repeat_mirror, |
7 | load "/root/pix/das_fette_schwein.jpg" |
11 | # load "/root/pix/das_fette_schwein.jpg" |
8 | '; |
12 | #'; |
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13 | #$EXPR = 'solid "red"'; |
9 | #$EXPR = 'blur root, 10, 10' |
14 | #$EXPR = 'blur root, 10, 10' |
10 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
15 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
11 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
16 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
12 | |
17 | |
13 | use Safe; |
18 | use Safe; |
14 | |
19 | |
15 | our ($bgdsl_self, $old, $new); |
20 | our ($bgdsl_self, $old, $new); |
16 | our ($l, $t, $w, $h); |
21 | our ($l, $t, $w, $h); |
17 | |
22 | |
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23 | # enforce at least this interval between updates |
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24 | our $MIN_INTERVAL = 1/100; |
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25 | |
18 | { |
26 | { |
19 | package urxvt::bgdsl; # background language |
27 | package urxvt::bgdsl; # background language |
20 | |
28 | |
21 | *repeat_black = \&urxvt::RepeatNone; #TODO wtf |
29 | # *repeat_empty = \&urxvt::RepeatNone; |
22 | *repeat_wrap = \&urxvt::RepeatNormal; |
30 | # *repeat_tile = \&urxvt::RepeatNormal; |
23 | *repeat_pad = \&urxvt::RepeatPad; |
31 | # *repeat_pad = \&urxvt::RepeatPad; |
24 | *repeat_mirror = \&urxvt::RepeatReflect; |
32 | # *repeat_mirror = \&urxvt::RepeatReflect; |
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33 | |
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34 | =head2 PROVIDERS/GENERATORS |
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35 | |
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36 | =over 4 |
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37 | |
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38 | =item load $path |
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39 | |
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40 | =cut |
25 | |
41 | |
26 | sub load($) { |
42 | sub load($) { |
27 | my ($path) = @_; |
43 | my ($path) = @_; |
28 | |
44 | |
29 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
45 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
30 | } |
46 | } |
31 | |
47 | |
32 | sub root() { |
48 | sub root() { |
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49 | $new->{rootpmap_sensitive} = 1; |
33 | die "root op not supported, exg, we need you"; |
50 | die "root op not supported, exg, we need you"; |
34 | } |
51 | } |
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52 | |
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53 | sub solid($;$$) { |
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54 | my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[1] || 1, $_[2] || 1); |
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55 | $img->fill ($_[0]); |
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56 | $img |
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57 | } |
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58 | |
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59 | =back |
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60 | |
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61 | =head2 VARIABLES |
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62 | |
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63 | =over 4 |
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64 | |
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65 | =cut |
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66 | |
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67 | sub X() { $new->{position_sensitive} = 1; $l } |
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68 | sub Y() { $new->{position_sensitive} = 1; $t } |
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69 | sub W() { $new->{size_sensitive} = 1; $w } |
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70 | sub H() { $new->{size_sensitive} = 1; $h } |
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71 | |
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72 | sub now() { urxvt::NOW } |
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73 | |
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74 | sub again($) { |
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75 | $new->{again} = $_[0]; |
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76 | } |
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77 | |
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78 | sub counter($) { |
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79 | $new->{again} = $_[0]; |
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80 | $bgdsl_self->{counter} + 0 |
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81 | } |
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82 | |
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83 | =back |
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84 | |
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85 | =head2 OPERATORS |
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86 | |
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87 | =over 4 |
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88 | |
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89 | =cut |
35 | |
90 | |
36 | # sub clone($) { |
91 | # sub clone($) { |
37 | # $_[0]->clone |
92 | # $_[0]->clone |
38 | # } |
93 | # } |
39 | |
94 | |
40 | sub clip($$$$$;$) { |
95 | sub clip($;$$;$$) { |
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96 | my $img = pop; |
41 | my $img = pop; |
97 | my $h = pop || H; |
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98 | my $w = pop || W; |
42 | $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4]) |
99 | $img->sub_rect ($_[0], $_[1], $w, $h) |
43 | } |
100 | } |
44 | |
101 | |
45 | sub resize($$$) { |
102 | sub resize($$$) { |
46 | my $img = pop; |
103 | my $img = pop; |
47 | $img->scale ($_[0], $_[1]) |
104 | $img->scale ($_[0], $_[1]) |
48 | } |
105 | } |
49 | |
106 | |
50 | # TODO: ugly |
107 | # TODO: ugly |
51 | sub move($$;$) { |
108 | sub move($$;$) { |
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109 | my $img = pop->clone; |
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110 | $img->move ($_[0], $_[1]); |
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111 | $img |
52 | my $img = pop; |
112 | # my $img = pop; |
53 | $img->sub_rect ( |
113 | # $img->sub_rect ( |
54 | $_[0], $_[1], |
114 | # $_[0], $_[1], |
55 | $img->w, $img->h, |
115 | # $img->w, $img->h, |
56 | $_[2], |
116 | # $_[2], |
57 | ) |
117 | # ) |
58 | } |
118 | } |
59 | |
119 | |
60 | sub rotate($$$$$$;$) { |
120 | sub rotate($$$$$$) { |
61 | my $img = pop; |
121 | my $img = pop; |
62 | $img->rotate ( |
122 | $img->rotate ( |
63 | $_[0], |
123 | $_[0], |
64 | $_[1], |
124 | $_[1], |
65 | $_[2] * $img->w * .01, |
125 | $_[2] * $img->w * .01, |
66 | $_[3] * $img->h * .01, |
126 | $_[3] * $img->h * .01, |
67 | $_[4] * (3.14159265 / 180), |
127 | $_[4] * (3.14159265 / 180), |
68 | $_[5], |
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69 | ) |
128 | ) |
70 | } |
129 | } |
71 | |
130 | |
72 | sub blur($$$) { |
131 | sub blur($$$) { |
73 | my ($rh, $rv, $img) = @_; |
132 | my ($rh, $rv, $img) = @_; |
74 | |
133 | |
75 | $img = $img->clone; |
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76 | $img->blur ($rh, $rv); |
134 | $img->blur ($rh, $rv); |
77 | $img |
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78 | } |
135 | } |
79 | |
136 | |
80 | sub contrast($$;$$;$) { |
137 | sub contrast($$;$$;$) { |
81 | my $img = pop; |
138 | my $img = pop; |
82 | my ($r, $g, $b, $a) = @_; |
139 | my ($r, $g, $b, $a) = @_; |
… | |
… | |
99 | $img = $img->clone; |
156 | $img = $img->clone; |
100 | $img->brightness ($r, $g, $b, $a); |
157 | $img->brightness ($r, $g, $b, $a); |
101 | $img |
158 | $img |
102 | } |
159 | } |
103 | |
160 | |
104 | sub X() { $new->{position_sensitive} = 1; $l } |
161 | =back |
105 | sub Y() { $new->{position_sensitive} = 1; $t } |
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106 | sub W() { $new->{size_sensitive} = 1; $w } |
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107 | sub H() { $new->{size_sensitive} = 1; $h } |
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108 | |
162 | |
109 | sub now() { urxvt::NOW } |
163 | =cut |
110 | |
164 | |
111 | sub again($) { |
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112 | $new->{again} = $_[0]; |
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113 | } |
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114 | |
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115 | sub counter($) { |
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116 | $new->{again} = $_[0]; |
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117 | $bgdsl_self->{counter} + 0 |
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118 | } |
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119 | } |
165 | } |
120 | |
166 | |
121 | sub parse_expr { |
167 | sub parse_expr { |
122 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
168 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
123 | die if $@; |
169 | die if $@; |
… | |
… | |
134 | |
180 | |
135 | # evaluate the current bg expression |
181 | # evaluate the current bg expression |
136 | sub recalculate { |
182 | sub recalculate { |
137 | my ($self) = @_; |
183 | my ($self) = @_; |
138 | |
184 | |
139 | #TODO: rate limit calls |
185 | # rate limit evaluation |
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186 | |
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187 | if ($self->{next_refresh} > urxvt::NOW) { |
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188 | $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub { |
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189 | $self->recalculate; |
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190 | }); |
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191 | return; |
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192 | } |
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193 | |
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194 | $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL; |
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195 | |
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196 | # set environment to evaluate user expression |
140 | |
197 | |
141 | local $bgdsl_self = $self; |
198 | local $bgdsl_self = $self; |
142 | |
199 | |
143 | local $old = $self->{state}; |
200 | local $old = $self->{state}; |
144 | local $new = my $state = $self->{state} = {}; |
201 | local $new = my $state = $self->{state} = {}; |
145 | |
202 | |
146 | ($l, $t, $w, $h) = |
203 | ($l, $t, $w, $h) = |
147 | $self->get_geometry; |
204 | $self->get_geometry; |
148 | |
205 | |
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206 | warn "$l,$t,$w,$h\n";#d# |
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207 | |
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208 | # evaluate user expression |
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209 | |
149 | my $img = eval { $self->{expr}->() }; |
210 | my $img = eval { $self->{expr}->() }; |
150 | warn $@ if $@;#d# |
211 | warn $@ if $@;#d# |
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212 | die if !UNIVERSAL::isa $img, "urxvt::img"; |
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213 | |
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214 | # if the expression is sensitive to external events, prepare reevaluation then |
151 | |
215 | |
152 | my $repeat; |
216 | my $repeat; |
153 | |
217 | |
154 | if (my $again = $state->{again}) { |
218 | if (my $again = $state->{again}) { |
155 | $repeat = 1; |
219 | $repeat = 1; |
… | |
… | |
173 | $self->enable (size_change => sub { $_[0]->recalculate }); |
237 | $self->enable (size_change => sub { $_[0]->recalculate }); |
174 | } else { |
238 | } else { |
175 | $self->disable ("size_change"); |
239 | $self->disable ("size_change"); |
176 | } |
240 | } |
177 | |
241 | |
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242 | if (delete $state->{rootpmap_sensitive}) { |
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243 | $repeat = 1; |
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244 | $self->enable (rootpmap_change => sub { $_[0]->recalculate }); |
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245 | } else { |
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246 | $self->disable ("rootpmap_change"); |
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247 | } |
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248 | |
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249 | # clear stuff we no longer need |
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250 | |
178 | %$old = (); |
251 | %$old = (); |
179 | |
252 | |
180 | unless ($repeat) { |
253 | unless ($repeat) { |
181 | delete $self->{state}; |
254 | delete $self->{state}; |
182 | delete $self->{expr}; |
255 | delete $self->{expr}; |
183 | } |
256 | } |
184 | |
257 | |
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258 | # prepare and set background pixmap |
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259 | |
185 | $img = $img->sub_rect (0, 0, $w, $h) |
260 | $img = $img->sub_rect (0, 0, $w, $h) |
186 | if $img->w != $w || $img->h != $h; |
261 | if $img->w != $w || $img->h != $h; |
187 | |
262 | |
188 | $self->set_background ($img); |
263 | $self->set_background ($img); |
189 | $self->scr_recolour (0); |
264 | $self->scr_recolour (0); |