1 | #! perl |
1 | #! perl |
2 | |
2 | |
3 | our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", left, top'; |
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 $EXPR = 'move W * 0.1, -H * 0.1, resize W * 0.5, H * 0.5, repeat_none load "MagnoliaAlpha.png"'; |
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8 | #$EXPR = ' |
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9 | # rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, |
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10 | # clip X, Y, W, H, repeat_mirror, |
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11 | # load "/root/pix/das_fette_schwein.jpg" |
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12 | #'; |
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13 | #$EXPR = 'solid "red"'; |
4 | #$EXPR = 'blur root, 10, 10' |
14 | #$EXPR = 'blur root, 10, 10' |
5 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
15 | #$EXPR = 'blur move (root, -x, -y), 5, 5' |
6 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
16 | #resize load "/root/pix/das_fette_schwein.jpg", w, h |
7 | |
17 | |
8 | use Safe; |
18 | use Safe; |
9 | |
19 | |
10 | our ($bgdsl_self, $old, $new); |
20 | our ($bgdsl_self, $old, $new); |
11 | our ($l, $t, $w, $h); |
21 | our ($l, $t, $w, $h); |
12 | |
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 | |
13 | { |
26 | { |
14 | package urxvt::bgdsl; # background language |
27 | package urxvt::bgdsl; # background language |
15 | |
28 | |
16 | *repeat_black = \&urxvt::RepeatNone; #TODO wtf |
29 | # *repeat_empty = \&urxvt::RepeatNone; |
17 | *repeat_wrap = \&urxvt::RepeatNormal; |
30 | # *repeat_tile = \&urxvt::RepeatNormal; |
18 | *repeat_pad = \&urxvt::RepeatPad; |
31 | # *repeat_pad = \&urxvt::RepeatPad; |
19 | *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 $path |
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39 | |
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40 | =cut |
20 | |
41 | |
21 | sub load($) { |
42 | sub load($) { |
22 | my ($path) = @_; |
43 | my ($path) = @_; |
23 | |
44 | |
24 | $new->{load}{$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); |
25 | } |
46 | } |
26 | |
47 | |
27 | sub root() { |
48 | sub root() { |
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49 | $new->{rootpmap_sensitive} = 1; |
28 | die "root op not supported, exg, we need you"; |
50 | die "root op not supported, exg, we need you"; |
29 | } |
51 | } |
30 | |
52 | |
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53 | sub solid($;$$) { |
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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 |
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90 | |
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91 | # sub clone($) { |
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92 | # $_[0]->clone |
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93 | # } |
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94 | |
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95 | sub repeat_none($) { |
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96 | my $img = $_[0]->clone; |
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97 | $img->repeat_mode (urxvt::RepeatNone); |
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98 | $img |
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99 | } |
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100 | |
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101 | sub clip($;$$;$$) { |
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102 | my $img = pop; |
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103 | my $h = pop || H; |
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104 | my $w = pop || W; |
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105 | $img->sub_rect ($_[0], $_[1], $w, $h) |
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106 | } |
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107 | |
31 | sub resize($$$) { |
108 | sub resize($$$) { |
32 | $_[0]->scale ($_[1], $_[2]) |
109 | my $img = pop; |
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110 | $img->scale ($_[0], $_[1]) |
33 | } |
111 | } |
34 | |
112 | |
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113 | # TODO: ugly |
35 | sub move($$$) { |
114 | sub move($$;$) { |
36 | # TODO: must be simpler |
115 | my $img = pop->clone; |
37 | $_[0]->transform ($_[0]->w, $_[0]->h, $_[1], |
116 | $img->move ($_[0], $_[1]); |
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117 | $img |
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118 | # my $img = pop; |
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119 | # $img->sub_rect ( |
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120 | # $_[0], $_[1], |
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121 | # $img->w, $img->h, |
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122 | # $_[2], |
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123 | # ) |
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124 | } |
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125 | |
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126 | sub rotate($$$$$$) { |
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127 | my $img = pop; |
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128 | $img->rotate ( |
38 | 1, 0, -$_[2], |
129 | $_[0], |
39 | 0, 1, -$_[3], |
130 | $_[1], |
40 | 0, 0, 1, |
131 | $_[2] * $img->w * .01, |
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132 | $_[3] * $img->h * .01, |
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133 | $_[4] * (3.14159265 / 180), |
41 | ) |
134 | ) |
42 | } |
135 | } |
43 | |
136 | |
44 | sub rotate($$$$) { |
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45 | $_[0]->rotate ($_[0], $_[1], $_[2], $_[3] * (3.14159265 / 180)) |
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46 | } |
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47 | |
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48 | sub blur($$$) { |
137 | sub blur($$$) { |
49 | my ($img, $rh, $rv) = @_; |
138 | my ($rh, $rv, $img) = @_; |
50 | |
139 | |
51 | $img = $img->clone; |
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52 | $img->clone->blur ($rh, $rv); |
140 | $img->blur ($rh, $rv); |
53 | $img |
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54 | } |
141 | } |
55 | |
142 | |
56 | sub contrast($$;$$;$) { |
143 | sub contrast($$;$$;$) { |
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144 | my $img = pop; |
57 | my ($img, $r, $g, $b, $a) = @_; |
145 | my ($r, $g, $b, $a) = @_; |
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146 | |
58 | ($g, $b) = ($r, $r) if @_ < 4; |
147 | ($g, $b) = ($r, $r) if @_ < 4; |
59 | $a = 1 if @_ < 5; |
148 | $a = 1 if @_ < 5; |
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149 | |
60 | $img = $img->clone; |
150 | $img = $img->clone; |
61 | $img->contrast ($r, $g, $b, $a); |
151 | $img->contrast ($r, $g, $b, $a); |
62 | $img |
152 | $img |
63 | } |
153 | } |
64 | |
154 | |
65 | sub brightness($$;$$;$) { |
155 | sub brightness($$;$$;$) { |
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156 | my $img = pop; |
66 | my ($img, $r, $g, $b, $a) = @_; |
157 | my ($r, $g, $b, $a) = @_; |
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158 | |
67 | ($g, $b) = ($r, $r) if @_ < 4; |
159 | ($g, $b) = ($r, $r) if @_ < 4; |
68 | $a = 1 if @_ < 5; |
160 | $a = 1 if @_ < 5; |
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161 | |
69 | $img = $img->clone; |
162 | $img = $img->clone; |
70 | $img->brightness ($r, $g, $b, $a); |
163 | $img->brightness ($r, $g, $b, $a); |
71 | $img |
164 | $img |
72 | } |
165 | } |
73 | |
166 | |
74 | sub left () { $new->{position_sensitive} = 1; $l } |
167 | =back |
75 | sub top () { $new->{position_sensitive} = 1; $t } |
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76 | sub width () { $new->{size_sensitive} = 1; $w } |
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77 | sub height() { $new->{size_sensitive} = 1; $h } |
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78 | |
168 | |
79 | sub now() { urxvt::NOW } |
169 | =cut |
80 | |
170 | |
81 | sub again($) { |
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82 | $new->{again} = $_[0]; |
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83 | } |
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84 | |
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85 | sub counter($) { |
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86 | $new->{again} = $_[0]; |
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87 | $bgdsl_self->{counter}++ + 0 |
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88 | } |
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89 | } |
171 | } |
90 | |
172 | |
91 | sub parse_expr { |
173 | sub parse_expr { |
92 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
174 | my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; |
93 | die if $@; |
175 | die if $@; |
… | |
… | |
96 | |
178 | |
97 | # compiles a parsed expression |
179 | # compiles a parsed expression |
98 | sub set_expr { |
180 | sub set_expr { |
99 | my ($self, $expr) = @_; |
181 | my ($self, $expr) = @_; |
100 | |
182 | |
101 | local $Data::Dumper::Deparse=1; use Data::Dumper; warn Dumper $expr;#d# |
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102 | $self->{expr} = $expr; |
183 | $self->{expr} = $expr; |
103 | $self->recalculate; |
184 | $self->recalculate; |
104 | } |
185 | } |
105 | |
186 | |
106 | # evaluate the current bg expression |
187 | # evaluate the current bg expression |
107 | sub recalculate { |
188 | sub recalculate { |
108 | my ($self) = @_; |
189 | my ($self) = @_; |
109 | |
190 | |
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191 | # rate limit evaluation |
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192 | |
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193 | if ($self->{next_refresh} > urxvt::NOW) { |
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194 | $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub { |
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195 | $self->recalculate; |
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196 | }); |
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197 | return; |
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198 | } |
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199 | |
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200 | $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL; |
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201 | |
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202 | # set environment to evaluate user expression |
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203 | |
110 | local $bgdsl_self = $self; |
204 | local $bgdsl_self = $self; |
111 | |
205 | |
112 | local $old = $self->{state}; |
206 | local $old = $self->{state}; |
113 | local $new = my $state = $self->{state} = {}; |
207 | local $new = my $state = $self->{state} = {}; |
114 | |
208 | |
115 | ($l, $t, $w, $h) = |
209 | ($l, $t, $w, $h) = |
116 | $self->get_geometry; |
210 | $self->get_geometry; |
117 | |
211 | |
118 | warn "$l, $t";#d# |
212 | warn "$l,$t,$w,$h\n";#d# |
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213 | |
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214 | # evaluate user expression |
119 | |
215 | |
120 | my $img = eval { $self->{expr}->() }; |
216 | my $img = eval { $self->{expr}->() }; |
121 | warn $@ if $@;#d# |
217 | warn $@ if $@;#d# |
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218 | die if !UNIVERSAL::isa $img, "urxvt::img"; |
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219 | |
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220 | # if the expression is sensitive to external events, prepare reevaluation then |
122 | |
221 | |
123 | my $repeat; |
222 | my $repeat; |
124 | |
223 | |
125 | if (my $again = $state->{again}) { |
224 | if (my $again = $state->{again}) { |
126 | $repeat = 1; |
225 | $repeat = 1; |
127 | $state->{again} = urxvt::timer->new->after ($again)->cb (sub { $self->recalculate }); |
226 | $state->{timer} = $again == $old->{again} |
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227 | ? $old->{timer} |
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228 | : urxvt::timer->new->after ($again)->interval ($again)->cb (sub { |
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229 | ++$self->{counter}; |
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230 | $self->recalculate |
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231 | }); |
128 | } |
232 | } |
129 | |
233 | |
130 | if (delete $state->{position_sensitive}) { |
234 | if (delete $state->{position_sensitive}) { |
131 | $repeat = 1; |
235 | $repeat = 1; |
132 | $self->enable (position_change => sub { $_[0]->recalculate }); |
236 | $self->enable (position_change => sub { $_[0]->recalculate }); |
… | |
… | |
139 | $self->enable (size_change => sub { $_[0]->recalculate }); |
243 | $self->enable (size_change => sub { $_[0]->recalculate }); |
140 | } else { |
244 | } else { |
141 | $self->disable ("size_change"); |
245 | $self->disable ("size_change"); |
142 | } |
246 | } |
143 | |
247 | |
144 | # TODO: install handlers for geometry changes &c |
248 | if (delete $state->{rootpmap_sensitive}) { |
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249 | $repeat = 1; |
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250 | $self->enable (rootpmap_change => sub { $_[0]->recalculate }); |
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251 | } else { |
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252 | $self->disable ("rootpmap_change"); |
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253 | } |
145 | |
254 | |
146 | warn $img; |
255 | # clear stuff we no longer need |
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256 | |
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257 | %$old = (); |
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258 | |
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259 | unless ($repeat) { |
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260 | delete $self->{state}; |
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261 | delete $self->{expr}; |
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262 | } |
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263 | |
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264 | # prepare and set background pixmap |
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265 | |
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266 | $img = $img->sub_rect (0, 0, $w, $h) |
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267 | if $img->w != $w || $img->h != $h; |
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268 | |
147 | $self->set_background ($img); |
269 | $self->set_background ($img); |
148 | $self->scr_recolour (0); |
270 | $self->scr_recolour (0); |
149 | $self->want_refresh; |
271 | $self->want_refresh; |
150 | } |
272 | } |
151 | |
273 | |