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/cvs/rxvt-unicode/src/perl/background
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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.3 by root, Tue Jun 5 12:08:23 2012 UTC vs.
Revision 1.11 by sf-exg, Tue Jun 5 15:18:23 2012 UTC

1#! perl 1#! perl
2 2
3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", left, top'; 3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y';
4$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';
4#$EXPR = 'blur root, 10, 10' 9#$EXPR = 'blur root, 10, 10'
5#$EXPR = 'blur move (root, -x, -y), 5, 5' 10#$EXPR = 'blur move (root, -x, -y), 5, 5'
6#resize load "/root/pix/das_fette_schwein.jpg", w, h 11#resize load "/root/pix/das_fette_schwein.jpg", w, h
7 12
8use Safe; 13use Safe;
9 14
10our ($bgdsl_self, $old, $new); 15our ($bgdsl_self, $old, $new);
11our ($l, $t, $w, $h); 16our ($l, $t, $w, $h);
17
18our $MIN_INTERVAL = 1/100;
12 19
13{ 20{
14 package urxvt::bgdsl; # background language 21 package urxvt::bgdsl; # background language
15 22
16 *repeat_black = \&urxvt::RepeatNone; #TODO wtf 23 *repeat_black = \&urxvt::RepeatNone; #TODO wtf
… …
23 30
24 $new->{load}{$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);
25 } 32 }
26 33
27 sub root() { 34 sub root() {
35 $new->{rootpmap_sensitive} = 1;
28 die "root op not supported, exg, we need you"; 36 die "root op not supported, exg, we need you";
29 } 37 }
30 38
39# sub clone($) {
40# $_[0]->clone
41# }
42
43 sub clip($$$$$;$) {
44 my $img = pop;
45 $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4])
46 }
47
31 sub resize($$$) { 48 sub resize($$$) {
32 $_[0]->scale ($_[1], $_[2]) 49 my $img = pop;
50 $img->scale ($_[0], $_[1])
33 } 51 }
34 52
53 # TODO: ugly
35 sub move($$$) { 54 sub move($$;$) {
36 # TODO: must be simpler 55 my $img = pop;
37 $_[0]->transform ($_[0]->w, $_[0]->h, $_[1], 56 $img->sub_rect (
57 $_[0], $_[1],
58 $img->w, $img->h,
38 1, 0, -$_[2], 59 $_[2],
39 0, 1, -$_[3],
40 0, 0, 1,
41 ) 60 )
42 } 61 }
43 62
44 sub rotate($$$$) { 63 sub rotate($$$$$$;$) {
45 $_[0]->rotate ($_[0], $_[1], $_[2], $_[3] * (3.14159265 / 180)) 64 my $img = pop;
65 $img->rotate (
66 $_[0],
67 $_[1],
68 $_[2] * $img->w * .01,
69 $_[3] * $img->h * .01,
70 $_[4] * (3.14159265 / 180),
71 $_[5],
72 )
46 } 73 }
47 74
48 sub blur($$$) { 75 sub blur($$$) {
49 my ($img, $rh, $rv) = @_; 76 my ($rh, $rv, $img) = @_;
50 77
51 $img = $img->clone;
52 $img->clone->blur ($rh, $rv); 78 $img->blur ($rh, $rv);
53 $img
54 } 79 }
55 80
56 sub contrast($$;$$;$) { 81 sub contrast($$;$$;$) {
82 my $img = pop;
57 my ($img, $r, $g, $b, $a) = @_; 83 my ($r, $g, $b, $a) = @_;
84
58 ($g, $b) = ($r, $r) if @_ < 4; 85 ($g, $b) = ($r, $r) if @_ < 4;
59 $a = 1 if @_ < 5; 86 $a = 1 if @_ < 5;
87
60 $img = $img->clone; 88 $img = $img->clone;
61 $img->contrast ($r, $g, $b, $a); 89 $img->contrast ($r, $g, $b, $a);
62 $img 90 $img
63 } 91 }
64 92
65 sub brightness($$;$$;$) { 93 sub brightness($$;$$;$) {
94 my $img = pop;
66 my ($img, $r, $g, $b, $a) = @_; 95 my ($r, $g, $b, $a) = @_;
96
67 ($g, $b) = ($r, $r) if @_ < 4; 97 ($g, $b) = ($r, $r) if @_ < 4;
68 $a = 1 if @_ < 5; 98 $a = 1 if @_ < 5;
99
69 $img = $img->clone; 100 $img = $img->clone;
70 $img->brightness ($r, $g, $b, $a); 101 $img->brightness ($r, $g, $b, $a);
71 $img 102 $img
72 } 103 }
73 104
74 sub left () { $new->{position_sensitive} = 1; $l } 105 sub X() { $new->{position_sensitive} = 1; $l }
75 sub top () { $new->{position_sensitive} = 1; $t } 106 sub Y() { $new->{position_sensitive} = 1; $t }
76 sub width () { $new->{size_sensitive} = 1; $w } 107 sub W() { $new->{size_sensitive} = 1; $w }
77 sub height() { $new->{size_sensitive} = 1; $h } 108 sub H() { $new->{size_sensitive} = 1; $h }
78 109
79 sub now() { urxvt::NOW } 110 sub now() { urxvt::NOW }
80 111
81 sub again($) { 112 sub again($) {
82 $new->{again} = $_[0]; 113 $new->{again} = $_[0];
83 } 114 }
84 115
85 sub counter($) { 116 sub counter($) {
86 $new->{again} = $_[0]; 117 $new->{again} = $_[0];
87 $bgdsl_self->{counter}++ + 0 118 $bgdsl_self->{counter} + 0
88 } 119 }
89} 120}
90 121
91sub parse_expr { 122sub parse_expr {
92 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; 123 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}";
… …
96 127
97# compiles a parsed expression 128# compiles a parsed expression
98sub set_expr { 129sub set_expr {
99 my ($self, $expr) = @_; 130 my ($self, $expr) = @_;
100 131
101 local $Data::Dumper::Deparse=1; use Data::Dumper; warn Dumper $expr;#d#
102 $self->{expr} = $expr; 132 $self->{expr} = $expr;
103 $self->recalculate; 133 $self->recalculate;
104} 134}
105 135
106# evaluate the current bg expression 136# evaluate the current bg expression
107sub recalculate { 137sub recalculate {
108 my ($self) = @_; 138 my ($self) = @_;
109 139
140 # rate limit evaluation
141
142 if ($self->{next_refresh} > urxvt::NOW) {
143 $self->{next_refresh_timer} = urxvt::timer->new->after ($self->{next_refresh} - urxvt::NOW)->cb (sub {
144 $self->recalculate;
145 });
146 }
147
148 $self->{next_refresh} = urxvt::NOW + $MIN_INTERVAL;
149
150 # set environment to evaluate user expression
151
110 local $bgdsl_self = $self; 152 local $bgdsl_self = $self;
111 153
112 local $old = $self->{state}; 154 local $old = $self->{state};
113 local $new = my $state = $self->{state} = {}; 155 local $new = my $state = $self->{state} = {};
114 156
115 ($l, $t, $w, $h) = 157 ($l, $t, $w, $h) =
116 $self->get_geometry; 158 $self->get_geometry;
117 159
118 warn "$l, $t";#d# 160 # evaluate user expression
119 161
120 my $img = eval { $self->{expr}->() }; 162 my $img = eval { $self->{expr}->() };
121 warn $@ if $@;#d# 163 warn $@ if $@;#d#
122 164
165 # if the expression is sensitive to external events, prepare reevaluation then
166
123 my $repeat; 167 my $repeat;
124 168
125 if (my $again = $state->{again}) { 169 if (my $again = $state->{again}) {
126 $repeat = 1; 170 $repeat = 1;
127 $state->{again} = urxvt::timer->new->after ($again)->cb (sub { $self->recalculate }); 171 $state->{timer} = $again == $old->{again}
172 ? $old->{timer}
173 : urxvt::timer->new->after ($again)->interval ($again)->cb (sub {
174 ++$self->{counter};
175 $self->recalculate
176 });
128 } 177 }
129 178
130 if (delete $state->{position_sensitive}) { 179 if (delete $state->{position_sensitive}) {
131 $repeat = 1; 180 $repeat = 1;
132 $self->enable (position_change => sub { $_[0]->recalculate }); 181 $self->enable (position_change => sub { $_[0]->recalculate });
… …
139 $self->enable (size_change => sub { $_[0]->recalculate }); 188 $self->enable (size_change => sub { $_[0]->recalculate });
140 } else { 189 } else {
141 $self->disable ("size_change"); 190 $self->disable ("size_change");
142 } 191 }
143 192
144 # TODO: install handlers for geometry changes &c 193 if (delete $state->{rootpmap_sensitive}) {
194 $repeat = 1;
195 $self->enable (rootpmap_change => sub { $_[0]->recalculate });
196 } else {
197 $self->disable ("rootpmap_change");
198 }
145 199
146 warn $img; 200 # clear stuff we no longer need
201
202 %$old = ();
203
204 unless ($repeat) {
205 delete $self->{state};
206 delete $self->{expr};
207 }
208
209 # prepare and set background pixmap
210
211 $img = $img->sub_rect (0, 0, $w, $h)
212 if $img->w != $w || $img->h != $h;
213
147 $self->set_background ($img); 214 $self->set_background ($img);
148 $self->scr_recolour (0); 215 $self->scr_recolour (0);
149 $self->want_refresh; 216 $self->want_refresh;
150} 217}
151 218

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