ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/perl/background
(Generate patch)

Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.3 by root, Tue Jun 5 12:08:23 2012 UTC vs.
Revision 1.14 by root, Tue Jun 5 22:23:07 2012 UTC

1#! perl 1#! perl
2 2
3#:META:RESOURCE:$$:string:background expression
4#:META:RESOURCE:$$-enable:boolean:some boolean
5
3our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", left, top'; 6our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y';
7$EXPR = '
8 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror,
9 clip X, Y, W, H, repeat_mirror,
10 load "/root/pix/das_fette_schwein.jpg"
11';
4#$EXPR = 'blur root, 10, 10' 12#$EXPR = 'blur root, 10, 10'
5#$EXPR = 'blur move (root, -x, -y), 5, 5' 13#$EXPR = 'blur move (root, -x, -y), 5, 5'
6#resize load "/root/pix/das_fette_schwein.jpg", w, h 14#resize load "/root/pix/das_fette_schwein.jpg", w, h
7 15
8use Safe; 16use Safe;
9 17
10our ($bgdsl_self, $old, $new); 18our ($bgdsl_self, $old, $new);
11our ($l, $t, $w, $h); 19our ($l, $t, $w, $h);
20
21# enforce at leats this time between updates
22our $MIN_INTERVAL = 1/100;
12 23
13{ 24{
14 package urxvt::bgdsl; # background language 25 package urxvt::bgdsl; # background language
15 26
16 *repeat_black = \&urxvt::RepeatNone; #TODO wtf 27 *repeat_black = \&urxvt::RepeatNone; #TODO wtf
… …
23 34
24 $new->{load}{$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);
25 } 36 }
26 37
27 sub root() { 38 sub root() {
39 $new->{rootpmap_sensitive} = 1;
28 die "root op not supported, exg, we need you"; 40 die "root op not supported, exg, we need you";
29 } 41 }
30 42
43# sub clone($) {
44# $_[0]->clone
45# }
46
47 sub clip($$$$$;$) {
48 my $img = pop;
49 $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4])
50 }
51
31 sub resize($$$) { 52 sub resize($$$) {
32 $_[0]->scale ($_[1], $_[2]) 53 my $img = pop;
54 $img->scale ($_[0], $_[1])
33 } 55 }
34 56
57 # TODO: ugly
35 sub move($$$) { 58 sub move($$;$) {
36 # TODO: must be simpler 59 my $img = pop;
37 $_[0]->transform ($_[0]->w, $_[0]->h, $_[1], 60 $img->sub_rect (
61 $_[0], $_[1],
62 $img->w, $img->h,
38 1, 0, -$_[2], 63 $_[2],
39 0, 1, -$_[3],
40 0, 0, 1,
41 ) 64 )
42 } 65 }
43 66
44 sub rotate($$$$) { 67 sub rotate($$$$$$;$) {
45 $_[0]->rotate ($_[0], $_[1], $_[2], $_[3] * (3.14159265 / 180)) 68 my $img = pop;
69 $img->rotate (
70 $_[0],
71 $_[1],
72 $_[2] * $img->w * .01,
73 $_[3] * $img->h * .01,
74 $_[4] * (3.14159265 / 180),
75 $_[5],
76 )
46 } 77 }
47 78
48 sub blur($$$) { 79 sub blur($$$) {
49 my ($img, $rh, $rv) = @_; 80 my ($rh, $rv, $img) = @_;
50 81
51 $img = $img->clone;
52 $img->clone->blur ($rh, $rv); 82 $img->blur ($rh, $rv);
53 $img
54 } 83 }
55 84
56 sub contrast($$;$$;$) { 85 sub contrast($$;$$;$) {
86 my $img = pop;
57 my ($img, $r, $g, $b, $a) = @_; 87 my ($r, $g, $b, $a) = @_;
88
58 ($g, $b) = ($r, $r) if @_ < 4; 89 ($g, $b) = ($r, $r) if @_ < 4;
59 $a = 1 if @_ < 5; 90 $a = 1 if @_ < 5;
91
60 $img = $img->clone; 92 $img = $img->clone;
61 $img->contrast ($r, $g, $b, $a); 93 $img->contrast ($r, $g, $b, $a);
62 $img 94 $img
63 } 95 }
64 96
65 sub brightness($$;$$;$) { 97 sub brightness($$;$$;$) {
98 my $img = pop;
66 my ($img, $r, $g, $b, $a) = @_; 99 my ($r, $g, $b, $a) = @_;
100
67 ($g, $b) = ($r, $r) if @_ < 4; 101 ($g, $b) = ($r, $r) if @_ < 4;
68 $a = 1 if @_ < 5; 102 $a = 1 if @_ < 5;
103
69 $img = $img->clone; 104 $img = $img->clone;
70 $img->brightness ($r, $g, $b, $a); 105 $img->brightness ($r, $g, $b, $a);
71 $img 106 $img
72 } 107 }
73 108
74 sub left () { $new->{position_sensitive} = 1; $l } 109 sub X() { $new->{position_sensitive} = 1; $l }
75 sub top () { $new->{position_sensitive} = 1; $t } 110 sub Y() { $new->{position_sensitive} = 1; $t }
76 sub width () { $new->{size_sensitive} = 1; $w } 111 sub W() { $new->{size_sensitive} = 1; $w }
77 sub height() { $new->{size_sensitive} = 1; $h } 112 sub H() { $new->{size_sensitive} = 1; $h }
78 113
79 sub now() { urxvt::NOW } 114 sub now() { urxvt::NOW }
80 115
81 sub again($) { 116 sub again($) {
82 $new->{again} = $_[0]; 117 $new->{again} = $_[0];
83 } 118 }
84 119
85 sub counter($) { 120 sub counter($) {
86 $new->{again} = $_[0]; 121 $new->{again} = $_[0];
87 $bgdsl_self->{counter}++ + 0 122 $bgdsl_self->{counter} + 0
88 } 123 }
89} 124}
90 125
91sub parse_expr { 126sub parse_expr {
92 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}"; 127 my $expr = eval "sub {\npackage urxvt::bgdsl;\n#line 0 'background expression'\n$_[0]\n}";
… …
96 131
97# compiles a parsed expression 132# compiles a parsed expression
98sub set_expr { 133sub set_expr {
99 my ($self, $expr) = @_; 134 my ($self, $expr) = @_;
100 135
101 local $Data::Dumper::Deparse=1; use Data::Dumper; warn Dumper $expr;#d#
102 $self->{expr} = $expr; 136 $self->{expr} = $expr;
103 $self->recalculate; 137 $self->recalculate;
104} 138}
105 139
106# evaluate the current bg expression 140# evaluate the current bg expression
107sub recalculate { 141sub recalculate {
108 my ($self) = @_; 142 my ($self) = @_;
109 143
144 # rate limit evaluation
145
146 if ($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
156
110 local $bgdsl_self = $self; 157 local $bgdsl_self = $self;
111 158
112 local $old = $self->{state}; 159 local $old = $self->{state};
113 local $new = my $state = $self->{state} = {}; 160 local $new = my $state = $self->{state} = {};
114 161
115 ($l, $t, $w, $h) = 162 ($l, $t, $w, $h) =
116 $self->get_geometry; 163 $self->get_geometry;
117 164
118 warn "$l, $t";#d# 165 # evaluate user expression
119 166
120 my $img = eval { $self->{expr}->() }; 167 my $img = eval { $self->{expr}->() };
121 warn $@ if $@;#d# 168 warn $@ if $@;#d#
122 169
170 # if the expression is sensitive to external events, prepare reevaluation then
171
123 my $repeat; 172 my $repeat;
124 173
125 if (my $again = $state->{again}) { 174 if (my $again = $state->{again}) {
126 $repeat = 1; 175 $repeat = 1;
127 $state->{again} = urxvt::timer->new->after ($again)->cb (sub { $self->recalculate }); 176 $state->{timer} = $again == $old->{again}
177 ? $old->{timer}
178 : urxvt::timer->new->after ($again)->interval ($again)->cb (sub {
179 ++$self->{counter};
180 $self->recalculate
181 });
128 } 182 }
129 183
130 if (delete $state->{position_sensitive}) { 184 if (delete $state->{position_sensitive}) {
131 $repeat = 1; 185 $repeat = 1;
132 $self->enable (position_change => sub { $_[0]->recalculate }); 186 $self->enable (position_change => sub { $_[0]->recalculate });
… …
139 $self->enable (size_change => sub { $_[0]->recalculate }); 193 $self->enable (size_change => sub { $_[0]->recalculate });
140 } else { 194 } else {
141 $self->disable ("size_change"); 195 $self->disable ("size_change");
142 } 196 }
143 197
144 # TODO: install handlers for geometry changes &c 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 }
145 204
146 warn $img; 205 # clear stuff we no longer need
206
207 %$old = ();
208
209 unless ($repeat) {
210 delete $self->{state};
211 delete $self->{expr};
212 }
213
214 # prepare and set background pixmap
215
216 $img = $img->sub_rect (0, 0, $w, $h)
217 if $img->w != $w || $img->h != $h;
218
147 $self->set_background ($img); 219 $self->set_background ($img);
148 $self->scr_recolour (0); 220 $self->scr_recolour (0);
149 $self->want_refresh; 221 $self->want_refresh;
150} 222}
151 223

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines