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/cvs/rxvt-unicode/src/perl/background
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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.5 by root, Tue Jun 5 13:42:59 2012 UTC vs.
Revision 1.10 by root, Tue Jun 5 14:53:16 2012 UTC

1#! perl 1#! perl
2 2
3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; 3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y';
4$EXPR = 'rotate load "/root/pix/das_fette_schwein.jpg", W, H, 50, 50, counter 1/60, repeat_mirror'; 4$EXPR = '
5 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror,
6 clip X, Y, W, H, repeat_mirror,
7 load "/root/pix/das_fette_schwein.jpg"
8';
5#$EXPR = 'blur root, 10, 10' 9#$EXPR = 'blur root, 10, 10'
6#$EXPR = 'blur move (root, -x, -y), 5, 5' 10#$EXPR = 'blur move (root, -x, -y), 5, 5'
7#resize load "/root/pix/das_fette_schwein.jpg", w, h 11#resize load "/root/pix/das_fette_schwein.jpg", w, h
8 12
9use Safe; 13use Safe;
10 14
11our ($bgdsl_self, $old, $new); 15our ($bgdsl_self, $old, $new);
12our ($l, $t, $w, $h); 16our ($l, $t, $w, $h);
17
18our $MIN_INTERVAL = 1/100;
13 19
14{ 20{
15 package urxvt::bgdsl; # background language 21 package urxvt::bgdsl; # background language
16 22
17 *repeat_black = \&urxvt::RepeatNone; #TODO wtf 23 *repeat_black = \&urxvt::RepeatNone; #TODO wtf
… …
24 30
25 $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path); 31 $new->{load}{$path} = $old->{load}{$path} || $bgdsl_self->new_img_from_file ($path);
26 } 32 }
27 33
28 sub root() { 34 sub root() {
35 $new->{rootpmap_sensitive} = 1;
29 die "root op not supported, exg, we need you"; 36 die "root op not supported, exg, we need you";
30 } 37 }
31 38
32# sub clone($) { 39# sub clone($) {
33# $_[0]->clone 40# $_[0]->clone
34# } 41# }
35 42
36 sub subrect($$$$$;$) { 43 sub clip($$$$$;$) {
44 my $img = pop;
37 $_[0]->sub_rect ($_[1], $_[2], $_[3], $_[4], $_[5]) 45 $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4])
38 } 46 }
39 47
40 sub resize($$$) { 48 sub resize($$$) {
41 $_[0]->scale ($_[1], $_[2]) 49 my $img = pop;
50 $img->scale ($_[0], $_[1])
42 } 51 }
43 52
53 # TODO: ugly
44 sub move($$$;$) { 54 sub move($$;$) {
45 # TODO: must be simpler 55 my $img = pop;
46 $_[0]->transform ($_[0]->w, $_[0]->h, 56 $img->sub_rect (
47 1, 0, $_[1], 57 $_[0], $_[1],
48 0, 1, $_[2], 58 $img->w, $img->h,
49 0, 0, 1,
50 $_[3], 59 $_[2],
51 ) 60 )
52 } 61 }
53 62
54 sub rotate($$$$$$;$) { 63 sub rotate($$$$$$;$) {
64 my $img = pop;
55 $_[0]->rotate ( 65 $img->rotate (
66 $_[0],
56 $_[1], 67 $_[1],
57 $_[2],
58 $_[3] * $_[0]->w * .01, 68 $_[2] * $img->w * .01,
59 $_[4] * $_[0]->h * .01, 69 $_[3] * $img->h * .01,
60 $_[5] * (3.14159265 / 180), 70 $_[4] * (3.14159265 / 180),
61 $_[6], 71 $_[5],
62 ) 72 )
63 } 73 }
64 74
65 sub blur($$$) { 75 sub blur($$$) {
66 my ($img, $rh, $rv) = @_; 76 my ($rh, $rv, $img) = @_;
67 77
68 $img = $img->clone; 78 $img = $img->clone;
69 $img->blur ($rh, $rv); 79 $img->blur ($rh, $rv);
70 $img 80 $img
71 } 81 }
72 82
73 sub contrast($$;$$;$) { 83 sub contrast($$;$$;$) {
84 my $img = pop;
74 my ($img, $r, $g, $b, $a) = @_; 85 my ($r, $g, $b, $a) = @_;
75 86
76 ($g, $b) = ($r, $r) if @_ < 4; 87 ($g, $b) = ($r, $r) if @_ < 4;
77 $a = 1 if @_ < 5; 88 $a = 1 if @_ < 5;
78 89
79 $img = $img->clone; 90 $img = $img->clone;
80 $img->contrast ($r, $g, $b, $a); 91 $img->contrast ($r, $g, $b, $a);
81 $img 92 $img
82 } 93 }
83 94
84 sub brightness($$;$$;$) { 95 sub brightness($$;$$;$) {
96 my $img = pop;
85 my ($img, $r, $g, $b, $a) = @_; 97 my ($r, $g, $b, $a) = @_;
86 98
87 ($g, $b) = ($r, $r) if @_ < 4; 99 ($g, $b) = ($r, $r) if @_ < 4;
88 $a = 1 if @_ < 5; 100 $a = 1 if @_ < 5;
89 101
90 $img = $img->clone; 102 $img = $img->clone;
… …
103 $new->{again} = $_[0]; 115 $new->{again} = $_[0];
104 } 116 }
105 117
106 sub counter($) { 118 sub counter($) {
107 $new->{again} = $_[0]; 119 $new->{again} = $_[0];
108 $bgdsl_self->{counter}++ + 0 120 $bgdsl_self->{counter} + 0
109 } 121 }
110} 122}
111 123
112sub parse_expr { 124sub parse_expr {
113 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; 125 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}";
… …
125 137
126# evaluate the current bg expression 138# evaluate the current bg expression
127sub recalculate { 139sub recalculate {
128 my ($self) = @_; 140 my ($self) = @_;
129 141
142 # rate limit evaluation
143
144 if ($self->{next_refresh} > urxvt::NOW) {
145 $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub {
146 $self->recalculate;
147 });
148 }
149
150 $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;
151
152 # set environment to evaluate user expression
153
130 local $bgdsl_self = $self; 154 local $bgdsl_self = $self;
131 155
132 local $old = $self->{state}; 156 local $old = $self->{state};
133 local $new = my $state = $self->{state} = {}; 157 local $new = my $state = $self->{state} = {};
134 158
135 ($l, $t, $w, $h) = 159 ($l, $t, $w, $h) =
136 $self->get_geometry; 160 $self->get_geometry;
137 161
162 # evaluate user expression
163
138 my $img = eval { $self->{expr}->() }; 164 my $img = eval { $self->{expr}->() };
139 warn $@ if $@;#d# 165 warn $@ if $@;#d#
140 166
141 %$old = (); 167 # if the expression is sensitive to external events, prepare reevaluation then
142 168
143 my $repeat; 169 my $repeat;
144 170
145 if (my $again = $state->{again}) { 171 if (my $again = $state->{again}) {
146 $repeat = 1; 172 $repeat = 1;
147 $state->{again} = urxvt::timer->new->after ($again)->cb (sub { $self->recalculate }); 173 $state->{timer} = $again == $old->{again}
174 ? $old->{timer}
175 : urxvt::timer->new->after ($again)->interval ($again)->cb (sub {
176 ++$self->{counter};
177 $self->recalculate
178 });
148 } 179 }
149 180
150 if (delete $state->{position_sensitive}) { 181 if (delete $state->{position_sensitive}) {
151 $repeat = 1; 182 $repeat = 1;
152 $self->enable (position_change => sub { $_[0]->recalculate }); 183 $self->enable (position_change => sub { $_[0]->recalculate });
… …
159 $self->enable (size_change => sub { $_[0]->recalculate }); 190 $self->enable (size_change => sub { $_[0]->recalculate });
160 } else { 191 } else {
161 $self->disable ("size_change"); 192 $self->disable ("size_change");
162 } 193 }
163 194
195 if (delete $state->{rootpmap_sensitive}) {
196 $repeat = 1;
197 $self->enable (rootpmap_change => sub { $_[0]->recalculate });
198 } else {
199 $self->disable ("rootpmap_change");
200 }
201
202 # clear stuff we no longer need
203
204 %$old = ();
205
164 unless ($repeat) { 206 unless ($repeat) {
165 delete $self->{state}; 207 delete $self->{state};
166 delete $self->{expr}; 208 delete $self->{expr};
167 } 209 }
168 210
211 # prepare and set background pixmap
212
169 $img = $img->sub_rect (0, 0, $w, $h) 213 $img = $img->sub_rect (0, 0, $w, $h)
170 if $img->w != $w || $img->h != $h; 214 if $img->w != $w || $img->h != $h;
171 215
172 $self->set_background ($img); 216 $self->set_background ($img);
173 $self->scr_recolour (0); 217 $self->scr_recolour (0);

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