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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.8 by root, Tue Jun 5 14:07:47 2012 UTC vs.
Revision 1.14 by root, Tue Jun 5 22:23:07 2012 UTC

1#! perl 1#! perl
2
3#:META:RESOURCE:$$:string:background expression
4#:META:RESOURCE:$$-enable:boolean:some boolean
2 5
3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; 6our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y';
4$EXPR = ' 7$EXPR = '
5 blur 10, 10,
6 rotate W, H, 50, 50, counter 1/60, repeat_mirror, 8 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror,
7 clip X, Y, W, H, repeat_mirror, 9 clip X, Y, W, H, repeat_mirror,
8 load "/root/pix/das_fette_schwein.jpg" 10 load "/root/pix/das_fette_schwein.jpg"
9'; 11';
10#$EXPR = 'blur root, 10, 10' 12#$EXPR = 'blur root, 10, 10'
11#$EXPR = 'blur move (root, -x, -y), 5, 5' 13#$EXPR = 'blur move (root, -x, -y), 5, 5'
… …
14use Safe; 16use Safe;
15 17
16our ($bgdsl_self, $old, $new); 18our ($bgdsl_self, $old, $new);
17our ($l, $t, $w, $h); 19our ($l, $t, $w, $h);
18 20
21# enforce at leats this time between updates
22our $MIN_INTERVAL = 1/100;
23
19{ 24{
20 package urxvt::bgdsl; # background language 25 package urxvt::bgdsl; # background language
21 26
22 *repeat_black = \&urxvt::RepeatNone; #TODO wtf 27 *repeat_black = \&urxvt::RepeatNone; #TODO wtf
23 *repeat_wrap = \&urxvt::RepeatNormal; 28 *repeat_wrap = \&urxvt::RepeatNormal;
… …
29 34
30 $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); 35 $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path);
31 } 36 }
32 37
33 sub root() { 38 sub root() {
39 $new->{rootpmap_sensitive} = 1;
34 die "root op not supported, exg, we need you"; 40 die "root op not supported, exg, we need you";
35 } 41 }
36 42
37# sub clone($) { 43# sub clone($) {
38# $_[0]->clone 44# $_[0]->clone
… …
71 } 77 }
72 78
73 sub blur($$$) { 79 sub blur($$$) {
74 my ($rh, $rv, $img) = @_; 80 my ($rh, $rv, $img) = @_;
75 81
76 $img = $img->clone;
77 $img->blur ($rh, $rv); 82 $img->blur ($rh, $rv);
78 $img
79 } 83 }
80 84
81 sub contrast($$;$$;$) { 85 sub contrast($$;$$;$) {
82 my $img = pop; 86 my $img = pop;
83 my ($r, $g, $b, $a) = @_; 87 my ($r, $g, $b, $a) = @_;
… …
135 139
136# evaluate the current bg expression 140# evaluate the current bg expression
137sub recalculate { 141sub recalculate {
138 my ($self) = @_; 142 my ($self) = @_;
139 143
140 #TODO: rate limit calls 144 # rate limit evaluation
145
146 if ($self->{next_refresh} > urxvt::NOW) {
147 $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub {
148 $self->recalculate;
149 });
150 return;
151 }
152
153 $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;
154
155 # set environment to evaluate user expression
141 156
142 local $bgdsl_self = $self; 157 local $bgdsl_self = $self;
143 158
144 local $old = $self->{state}; 159 local $old = $self->{state};
145 local $new = my $state = $self->{state} = {}; 160 local $new = my $state = $self->{state} = {};
146 161
147 ($l, $t, $w, $h) = 162 ($l, $t, $w, $h) =
148 $self->get_geometry; 163 $self->get_geometry;
149 164
165 # evaluate user expression
166
150 my $img = eval { $self->{expr}->() }; 167 my $img = eval { $self->{expr}->() };
151 warn $@ if $@;#d# 168 warn $@ if $@;#d#
169
170 # if the expression is sensitive to external events, prepare reevaluation then
152 171
153 my $repeat; 172 my $repeat;
154 173
155 if (my $again = $state->{again}) { 174 if (my $again = $state->{again}) {
156 $repeat = 1; 175 $repeat = 1;
… …
174 $self->enable (size_change => sub { $_[0]->recalculate }); 193 $self->enable (size_change => sub { $_[0]->recalculate });
175 } else { 194 } else {
176 $self->disable ("size_change"); 195 $self->disable ("size_change");
177 } 196 }
178 197
198 if (delete $state->{rootpmap_sensitive}) {
199 $repeat = 1;
200 $self->enable (rootpmap_change => sub { $_[0]->recalculate });
201 } else {
202 $self->disable ("rootpmap_change");
203 }
204
205 # clear stuff we no longer need
206
179 %$old = (); 207 %$old = ();
180 208
181 unless ($repeat) { 209 unless ($repeat) {
182 delete $self->{state}; 210 delete $self->{state};
183 delete $self->{expr}; 211 delete $self->{expr};
184 } 212 }
185 213
214 # prepare and set background pixmap
215
186 $img = $img->sub_rect (0, 0, $w, $h) 216 $img = $img->sub_rect (0, 0, $w, $h)
187 if $img->w != $w || $img->h != $h; 217 if $img->w != $w || $img->h != $h;
188 218
189 $self->set_background ($img); 219 $self->set_background ($img);
190 $self->scr_recolour (0); 220 $self->scr_recolour (0);

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