1 | #! perl |
1 | #! perl |
2 | |
2 | |
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3 | #:META:RESOURCE:$$:string:background expression |
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4 | #:META:RESOURCE:$$-enable:boolean:some boolean |
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5 | |
3 | our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; |
6 | our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; |
4 | $EXPR = 'rotate load "/root/pix/das_fette_schwein.jpg", W, H, 50, 50, counter 1/60, repeat_mirror'; |
7 | $EXPR = ' |
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8 | rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
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9 | clip X, Y, W, H, repeat_mirror, |
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10 | load "/root/pix/das_fette_schwein.jpg" |
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11 | '; |
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12 | $EXPR = 'solid "red"'; |
5 | #$EXPR = 'blur root, 10, 10' |
13 | #$EXPR = 'blur root, 10, 10' |
6 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
14 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
7 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
15 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
8 | |
16 | |
9 | use Safe; |
17 | use Safe; |
10 | |
18 | |
11 | our ($bgdsl_self, $old, $new); |
19 | our ($bgdsl_self, $old, $new); |
12 | our ($l, $t, $w, $h); |
20 | our ($l, $t, $w, $h); |
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21 | |
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22 | # enforce at leats this time between updates |
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23 | our $MIN_INTERVAL = 1/100; |
13 | |
24 | |
14 | { |
25 | { |
15 | package urxvt::bgdsl; # background language |
26 | package urxvt::bgdsl; # background language |
16 | |
27 | |
17 | *repeat_black = \&urxvt::RepeatNone; #TODO wtf |
28 | *repeat_black = \&urxvt::RepeatNone; #TODO wtf |
18 | *repeat_wrap = \&urxvt::RepeatNormal; |
29 | *repeat_wrap = \&urxvt::RepeatNormal; |
19 | *repeat_pad = \&urxvt::RepeatPad; |
30 | *repeat_pad = \&urxvt::RepeatPad; |
20 | *repeat_mirror = \&urxvt::RepeatReflect; |
31 | *repeat_mirror = \&urxvt::RepeatReflect; |
21 | |
32 | |
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33 | =head2 PROVIDERS/GENERATORS |
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34 | |
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35 | =over 4 |
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36 | |
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37 | =item load $path |
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38 | |
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39 | =cut |
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40 | |
22 | sub load($) { |
41 | sub load($) { |
23 | my ($path) = @_; |
42 | my ($path) = @_; |
24 | |
43 | |
25 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
44 | $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); |
26 | } |
45 | } |
27 | |
46 | |
28 | sub root() { |
47 | sub root() { |
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48 | $new->{rootpmap_sensitive} = 1; |
29 | die "root op not supported, exg, we need you"; |
49 | die "root op not supported, exg, we need you"; |
30 | } |
50 | } |
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51 | |
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52 | sub solid($;$$) { |
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53 | my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[1] || 1, $_[2] || 1); |
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54 | $img->fill ($_[0]); |
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55 | $img |
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56 | } |
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57 | |
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58 | =back |
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59 | |
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60 | =head2 OPERATORS |
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61 | |
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62 | =over 4 |
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63 | |
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64 | =cut |
31 | |
65 | |
32 | # sub clone($) { |
66 | # sub clone($) { |
33 | # $_[0]->clone |
67 | # $_[0]->clone |
34 | # } |
68 | # } |
35 | |
69 | |
36 | sub subrect($$$$$;$) { |
70 | sub clip($$$$$;$) { |
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71 | my $img = pop; |
37 | $_[0]->sub_rect ($_[1], $_[2], $_[3], $_[4], $_[5]) |
72 | $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4]) |
38 | } |
73 | } |
39 | |
74 | |
40 | sub resize($$$) { |
75 | sub resize($$$) { |
41 | $_[0]->scale ($_[1], $_[2]) |
76 | my $img = pop; |
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77 | $img->scale ($_[0], $_[1]) |
42 | } |
78 | } |
43 | |
79 | |
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80 | # TODO: ugly |
44 | sub move($$$;$) { |
81 | sub move($$;$) { |
45 | # TODO: must be simpler |
82 | my $img = pop; |
46 | $_[0]->transform ($_[0]->w, $_[0]->h, |
83 | $img->sub_rect ( |
47 | 1, 0, $_[1], |
84 | $_[0], $_[1], |
48 | 0, 1, $_[2], |
85 | $img->w, $img->h, |
49 | 0, 0, 1, |
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50 | $_[3], |
86 | $_[2], |
51 | ) |
87 | ) |
52 | } |
88 | } |
53 | |
89 | |
54 | sub rotate($$$$$$;$) { |
90 | sub rotate($$$$$$;$) { |
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91 | my $img = pop; |
55 | $_[0]->rotate ( |
92 | $img->rotate ( |
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93 | $_[0], |
56 | $_[1], |
94 | $_[1], |
57 | $_[2], |
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58 | $_[3] * $_[0]->w * .01, |
95 | $_[2] * $img->w * .01, |
59 | $_[4] * $_[0]->h * .01, |
96 | $_[3] * $img->h * .01, |
60 | $_[5] * (3.14159265 / 180), |
97 | $_[4] * (3.14159265 / 180), |
61 | $_[6], |
98 | $_[5], |
62 | ) |
99 | ) |
63 | } |
100 | } |
64 | |
101 | |
65 | sub blur($$$) { |
102 | sub blur($$$) { |
66 | my ($img, $rh, $rv) = @_; |
103 | my ($rh, $rv, $img) = @_; |
67 | |
104 | |
68 | $img = $img->clone; |
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69 | $img->blur ($rh, $rv); |
105 | $img->blur ($rh, $rv); |
70 | $img |
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71 | } |
106 | } |
72 | |
107 | |
73 | sub contrast($$;$$;$) { |
108 | sub contrast($$;$$;$) { |
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109 | my $img = pop; |
74 | my ($img, $r, $g, $b, $a) = @_; |
110 | my ($r, $g, $b, $a) = @_; |
75 | |
111 | |
76 | ($g, $b) = ($r, $r) if @_ < 4; |
112 | ($g, $b) = ($r, $r) if @_ < 4; |
77 | $a = 1 if @_ < 5; |
113 | $a = 1 if @_ < 5; |
78 | |
114 | |
79 | $img = $img->clone; |
115 | $img = $img->clone; |
80 | $img->contrast ($r, $g, $b, $a); |
116 | $img->contrast ($r, $g, $b, $a); |
81 | $img |
117 | $img |
82 | } |
118 | } |
83 | |
119 | |
84 | sub brightness($$;$$;$) { |
120 | sub brightness($$;$$;$) { |
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121 | my $img = pop; |
85 | my ($img, $r, $g, $b, $a) = @_; |
122 | my ($r, $g, $b, $a) = @_; |
86 | |
123 | |
87 | ($g, $b) = ($r, $r) if @_ < 4; |
124 | ($g, $b) = ($r, $r) if @_ < 4; |
88 | $a = 1 if @_ < 5; |
125 | $a = 1 if @_ < 5; |
89 | |
126 | |
90 | $img = $img->clone; |
127 | $img = $img->clone; |
… | |
… | |
103 | $new->{again} = $_[0]; |
140 | $new->{again} = $_[0]; |
104 | } |
141 | } |
105 | |
142 | |
106 | sub counter($) { |
143 | sub counter($) { |
107 | $new->{again} = $_[0]; |
144 | $new->{again} = $_[0]; |
108 | $bgdsl_self->{counter}++ + 0 |
145 | $bgdsl_self->{counter} + 0 |
109 | } |
146 | } |
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147 | |
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148 | =back |
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149 | |
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150 | =cut |
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151 | |
110 | } |
152 | } |
111 | |
153 | |
112 | sub parse_expr { |
154 | sub parse_expr { |
113 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
155 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
114 | die if $@; |
156 | die if $@; |
… | |
… | |
125 | |
167 | |
126 | # evaluate the current bg expression |
168 | # evaluate the current bg expression |
127 | sub recalculate { |
169 | sub recalculate { |
128 | my ($self) = @_; |
170 | my ($self) = @_; |
129 | |
171 | |
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172 | # rate limit evaluation |
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173 | |
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174 | if ($self->{next_refresh} > urxvt::NOW) { |
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175 | $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub { |
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176 | $self->recalculate; |
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177 | }); |
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178 | return; |
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179 | } |
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180 | |
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181 | $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL; |
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182 | |
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183 | # set environment to evaluate user expression |
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184 | |
130 | local $bgdsl_self = $self; |
185 | local $bgdsl_self = $self; |
131 | |
186 | |
132 | local $old = $self->{state}; |
187 | local $old = $self->{state}; |
133 | local $new = my $state = $self->{state} = {}; |
188 | local $new = my $state = $self->{state} = {}; |
134 | |
189 | |
135 | ($l, $t, $w, $h) = |
190 | ($l, $t, $w, $h) = |
136 | $self->get_geometry; |
191 | $self->get_geometry; |
137 | |
192 | |
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193 | # evaluate user expression |
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194 | |
138 | my $img = eval { $self->{expr}->() }; |
195 | my $img = eval { $self->{expr}->() }; |
139 | warn $@ if $@;#d# |
196 | warn $@ if $@;#d# |
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197 | die if !UNIVERSAL::isa $img, "urxvt::img"; |
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198 | |
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199 | # if the expression is sensitive to external events, prepare reevaluation then |
140 | |
200 | |
141 | my $repeat; |
201 | my $repeat; |
142 | |
202 | |
143 | if (my $again = $state->{again}) { |
203 | if (my $again = $state->{again}) { |
144 | $repeat = 1; |
204 | $repeat = 1; |
145 | $state->{again} = urxvt::timer->new->after ($again)->cb (sub { $self->recalculate }); |
205 | $state->{timer} = $again == $old->{again} |
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206 | ? $old->{timer} |
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207 | : urxvt::timer->new->after ($again)->interval ($again)->cb (sub { |
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208 | ++$self->{counter}; |
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209 | $self->recalculate |
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210 | }); |
146 | } |
211 | } |
147 | |
212 | |
148 | if (delete $state->{position_sensitive}) { |
213 | if (delete $state->{position_sensitive}) { |
149 | $repeat = 1; |
214 | $repeat = 1; |
150 | $self->enable (position_change => sub { $_[0]->recalculate }); |
215 | $self->enable (position_change => sub { $_[0]->recalculate }); |
… | |
… | |
157 | $self->enable (size_change => sub { $_[0]->recalculate }); |
222 | $self->enable (size_change => sub { $_[0]->recalculate }); |
158 | } else { |
223 | } else { |
159 | $self->disable ("size_change"); |
224 | $self->disable ("size_change"); |
160 | } |
225 | } |
161 | |
226 | |
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227 | if (delete $state->{rootpmap_sensitive}) { |
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228 | $repeat = 1; |
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229 | $self->enable (rootpmap_change => sub { $_[0]->recalculate }); |
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230 | } else { |
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231 | $self->disable ("rootpmap_change"); |
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232 | } |
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233 | |
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234 | # clear stuff we no longer need |
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235 | |
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236 | %$old = (); |
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237 | |
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238 | unless ($repeat) { |
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239 | delete $self->{state}; |
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240 | delete $self->{expr}; |
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241 | } |
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242 | |
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243 | # prepare and set background pixmap |
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244 | |
162 | $img = $img->sub_rect (0, 0, $w, $h) |
245 | $img = $img->sub_rect (0, 0, $w, $h) |
163 | if $img->w != $w || $img->h != $h; |
246 | if $img->w != $w || $img->h != $h; |
164 | |
247 | |
165 | $self->set_background ($img); |
248 | $self->set_background ($img); |
166 | $self->scr_recolour (0); |
249 | $self->scr_recolour (0); |