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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.9 by root, Tue Jun 5 14:46:54 2012 UTC vs.
Revision 1.18 by root, Wed Jun 6 15:06:41 2012 UTC

1#! perl 1#! perl
2
3#:META:X_RESOURCE:%.expr:string:background expression
4#:META:X_RESOURCE:%.enable:boolean:some boolean
5#:META:X_RESOURCE:%.extra.:value:extra config
2 6
3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; 7our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y';
4$EXPR = ' 8$EXPR = '
5 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, 9 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror,
6 clip X, Y, W, H, repeat_mirror, 10 clip X, Y, W, H, repeat_mirror,
7 load "/root/pix/das_fette_schwein.jpg" 11 load "/root/pix/das_fette_schwein.jpg"
8'; 12';
13$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
13use Safe; 18use Safe;
14 19
15our ($bgdsl_self, $old, $new); 20our ($bgdsl_self, $old, $new);
16our ($l, $t, $w, $h); 21our ($l, $t, $w, $h);
17 22
23# enforce at least this interval between updates
18our $MIN_INTERVAL = 1/60; 24our $MIN_INTERVAL = 1/100;
19 25
20{ 26{
21 package urxvt::bgdsl; # background language 27 package urxvt::bgdsl; # background language
22 28
23 *repeat_black = \&urxvt::RepeatNone; #TODO wtf 29 *repeat_empty = \&urxvt::RepeatNone;
24 *repeat_wrap = \&urxvt::RepeatNormal; 30 *repeat_tile = \&urxvt::RepeatNormal;
25 *repeat_pad = \&urxvt::RepeatPad; 31 *repeat_pad = \&urxvt::RepeatPad;
26 *repeat_mirror = \&urxvt::RepeatReflect; 32 *repeat_mirror = \&urxvt::RepeatReflect;
33
34=head2 PROVIDERS/GENERATORS
35
36=over 4
37
38=item load $path
39
40=cut
27 41
28 sub load($) { 42 sub load($) {
29 my ($path) = @_; 43 my ($path) = @_;
30 44
31 $new->{load}{$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);
… …
33 47
34 sub root() { 48 sub root() {
35 $new->{rootpmap_sensitive} = 1; 49 $new->{rootpmap_sensitive} = 1;
36 die "root op not supported, exg, we need you"; 50 die "root op not supported, exg, we need you";
37 } 51 }
52
53 sub solid($;$$) {
54 my $img = $bgdsl_self->new_img (urxvt::PictStandardARGB32, $_[1] || 1, $_[2] || 1);
55 $img->fill ($_[0]);
56 $img
57 }
58
59=back
60
61=head2 OPERATORS
62
63=over 4
64
65=cut
38 66
39# sub clone($) { 67# sub clone($) {
40# $_[0]->clone 68# $_[0]->clone
41# } 69# }
42 70
… …
73 } 101 }
74 102
75 sub blur($$$) { 103 sub blur($$$) {
76 my ($rh, $rv, $img) = @_; 104 my ($rh, $rv, $img) = @_;
77 105
78 $img = $img->clone;
79 $img->blur ($rh, $rv); 106 $img->blur ($rh, $rv);
80 $img
81 } 107 }
82 108
83 sub contrast($$;$$;$) { 109 sub contrast($$;$$;$) {
84 my $img = pop; 110 my $img = pop;
85 my ($r, $g, $b, $a) = @_; 111 my ($r, $g, $b, $a) = @_;
… …
117 143
118 sub counter($) { 144 sub counter($) {
119 $new->{again} = $_[0]; 145 $new->{again} = $_[0];
120 $bgdsl_self->{counter} + 0 146 $bgdsl_self->{counter} + 0
121 } 147 }
148
149=back
150
151=cut
152
122} 153}
123 154
124sub parse_expr { 155sub parse_expr {
125 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; 156 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}";
126 die if $@; 157 die if $@;
… …
137 168
138# evaluate the current bg expression 169# evaluate the current bg expression
139sub recalculate { 170sub recalculate {
140 my ($self) = @_; 171 my ($self) = @_;
141 172
173 # rate limit evaluation
174
142 if ($self->{next_refresh} > urxvt::NOW) { 175 if ($self->{next_refresh} > urxvt::NOW) {
143 $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub { 176 $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub {
144 $self->recalculate; 177 $self->recalculate;
145 }); 178 });
179 return;
146 } 180 }
147 181
148 $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL; 182 $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;
149 183
150 #TODO: rate limit calls 184 # set environment to evaluate user expression
151 185
152 local $bgdsl_self = $self; 186 local $bgdsl_self = $self;
153 187
154 local $old = $self->{state}; 188 local $old = $self->{state};
155 local $new = my $state = $self->{state} = {}; 189 local $new = my $state = $self->{state} = {};
156 190
157 ($l, $t, $w, $h) = 191 ($l, $t, $w, $h) =
158 $self->get_geometry; 192 $self->get_geometry;
159 193
194 # evaluate user expression
195
160 my $img = eval { $self->{expr}->() }; 196 my $img = eval { $self->{expr}->() };
161 warn $@ if $@;#d# 197 warn $@ if $@;#d#
198 die if !UNIVERSAL::isa $img, "urxvt::img";
199
200 # if the expression is sensitive to external events, prepare reevaluation then
162 201
163 my $repeat; 202 my $repeat;
164 203
165 if (my $again = $state->{again}) { 204 if (my $again = $state->{again}) {
166 $repeat = 1; 205 $repeat = 1;
… …
191 $self->enable (rootpmap_change => sub { $_[0]->recalculate }); 230 $self->enable (rootpmap_change => sub { $_[0]->recalculate });
192 } else { 231 } else {
193 $self->disable ("rootpmap_change"); 232 $self->disable ("rootpmap_change");
194 } 233 }
195 234
235 # clear stuff we no longer need
236
196 %$old = (); 237 %$old = ();
197 238
198 unless ($repeat) { 239 unless ($repeat) {
199 delete $self->{state}; 240 delete $self->{state};
200 delete $self->{expr}; 241 delete $self->{expr};
201 } 242 }
202 243
244 # prepare and set background pixmap
245
203 $img = $img->sub_rect (0, 0, $w, $h) 246 $img = $img->sub_rect (0, 0, $w, $h)
204 if $img->w != $w || $img->h != $h; 247 if $img->w != $w || $img->h != $h;
205 248
206 $self->set_background ($img); 249 $self->set_background ($img);
207 $self->scr_recolour (0); 250 $self->scr_recolour (0);

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