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Comparing rxvt-unicode/src/perl/background (file contents):
Revision 1.17 by root, Wed Jun 6 14:34:03 2012 UTC vs.
Revision 1.29 by root, Thu Jun 7 13:12:08 2012 UTC

1#! perl 1#! perl
2 2
3#:META:X_RESOURCE:%.expr:string:background expression 3#:META:X_RESOURCE:%.expr:string:background expression
4#:META:X_RESOURCE:%.enable:boolean:some boolean 4#:META:X_RESOURCE:%.enable:boolean:some boolean
5#:META:X_RESOURCE:%.extra.*:value:extra config 5#:META:X_RESOURCE:%.extra.:value:extra config
6 6
7our $EXPR = 'move load "/root/pix/das_fette_schwein.jpg", repeat_wrap, X, Y'; 7our $EXPR;
8#$EXPR = 'move W * 0.1, -H * 0.1, resize W * 0.5, H * 0.5, repeat_none load "opensource.png"';
9$EXPR = 'move -X, -Y, load "argb.png"';
8$EXPR = ' 10#$EXPR = '
9 rotate W, H, 50, 50, counter 1/59.95, repeat_mirror, 11# rotate W, H, 50, 50, counter 1/59.95, repeat_mirror,
10 clip X, Y, W, H, repeat_mirror, 12# clip X, Y, W, H, repeat_mirror,
11 load "/root/pix/das_fette_schwein.jpg" 13# load "/root/pix/das_fette_schwein.jpg"
12'; 14#';
13$EXPR = 'solid "red"'; 15#$EXPR = 'solid "red"';
14#$EXPR = 'blur root, 10, 10' 16#$EXPR = 'blur root, 10, 10'
15#$EXPR = 'blur move (root, -x, -y), 5, 5' 17#$EXPR = 'blur move (root, -x, -y), 5, 5'
16#resize load "/root/pix/das_fette_schwein.jpg", w, h 18#resize load "/root/pix/das_fette_schwein.jpg", w, h
17 19
18use Safe; 20use Safe;
19 21
20our ($bgdsl_self, $old, $new); 22our ($bgdsl_self, $old, $new);
21our ($l, $t, $w, $h); 23our ($x, $y, $w, $h);
22 24
23# enforce at least this interval between updates 25# enforce at least this interval between updates
24our $MIN_INTERVAL = 1/100; 26our $MIN_INTERVAL = 1/100;
25 27
26{ 28{
27 package urxvt::bgdsl; # background language 29 package urxvt::bgdsl; # background language
28 30
29 *repeat_empty = \&urxvt::RepeatNone;
30 *repeat_tile = \&urxvt::RepeatNormal;
31 *repeat_pad = \&urxvt::RepeatPad;
32 *repeat_mirror = \&urxvt::RepeatReflect;
33
34=head2 PROVIDERS/GENERATORS 31=head2 PROVIDERS/GENERATORS
35 32
36=over 4 33=over 4
37 34
38=item load $path 35=item load $path
36
37Loads the image at the given C<$path>. The image is set to plane tiling
38mode.
39
40
39 41
40=cut 42=cut
41 43
42 sub load($) { 44 sub load($) {
43 my ($path) = @_; 45 my ($path) = @_;
… …
56 $img 58 $img
57 } 59 }
58 60
59=back 61=back
60 62
61=head2 OPERATORS 63=head2 VARIABLES
62 64
63=over 4 65=over 4
64 66
65=cut 67=cut
66 68
69 sub X() { $new->{position_sensitive} = 1; $x }
70 sub Y() { $new->{position_sensitive} = 1; $y }
71 sub W() { $new->{size_sensitive} = 1; $w }
72 sub H() { $new->{size_sensitive} = 1; $h }
73
74 sub now() { urxvt::NOW }
75
76 sub again($) {
77 $new->{again} = $_[0];
78 }
79
80 sub counter($) {
81 $new->{again} = $_[0];
82 $bgdsl_self->{counter} + 0
83 }
84
85=back
86
87=head2 TILING MODES
88
89The following operators modify the tiling mode of an image, that is, the
90way that pixels outside the image area are painted when the image is used.
91
92=over 4
93
94=item tile $img
95
96Tiles the whole plane with the image and returns this new image - or in
97other words, it returns a copy of the image in plane tiling mode.
98
99=item mirror $img
100
101Similar to tile, but reflects the image each time it uses a new copy, so
102that top edges always touch top edges, right edges always touch right
103edges and so on (with normal tiling, left edges always touch right edges
104and top always touch bottom edges).
105
106=item pad $img
107
108Takes an image and modifies it so that all pixels outside the image area
109become transparent. This mode is most useful when you want to place an
110image over another image or the background colour while leaving all
111background pixels outside the image unchanged.
112
113=item extend $img
114
115Extends the image over the whole plane, using the closest pixel in the
116area outside the image. This mode is mostly useful when you more complex
117filtering operations and want the pixels outside the image to have the
118same values as the pixels near the edge.
119
120=cut
121
122 sub pad($) {
123 my $img = $_[0]->clone;
124 $img->repeat_mode (urxvt::RepeatNone);
125 $img
126 }
127
128 sub tile($) {
129 my $img = $_[0]->clone;
130 $img->repeat_mode (urxvt::RepeatNormal);
131 $img
132 }
133
134 sub mirror($) {
135 my $img = $_[0]->clone;
136 $img->repeat_mode (urxvt::RepeatReflect);
137 $img
138 }
139
140 sub extend($) {
141 my $img = $_[0]->clone;
142 $img->repeat_mode (urxvt::RepeatPad);
143 $img
144 }
145
146=back
147
148=head2 PIXEL OPERATORS
149
150The following operators modify the image pixels in various ways.
151
152=over 4
153
154=item clone $img
155
156Returns an exact copy of the image.
157
158=cut
159
67# sub clone($) { 160 sub clone($) {
68# $_[0]->clone 161 $_[0]->clone
69# } 162 }
70 163
164=item clip $img
165
166=item clip $width, $height, $img
167
168=item clip $x, $y, $width, $height, $img
169
170Clips an image to the given rectangle. If the rectangle is outside the
171image area (e.g. when C<$x> or C<$y> are negative) or the rectangle is
172larger than the image, then the tiling mode defines how the extra pixels
173will be filled.
174
175If C<$x> an C<$y> are missing, then C<0> is assumed for both.
176
177If C<$width> and C<$height> are missing, then the window size will be
178assumed.
179
180Example: load an image, blur it, and clip it to the window size to save
181memory.
182
183 clip blur 10, load "mybg.png"
184
185=cut
186
71 sub clip($$$$$;$) { 187 sub clip($;$$;$$) {
188 my $img = pop;
72 my $img = pop; 189 my $h = pop || H;
190 my $w = pop || W;
73 $img->sub_rect ($_[0], $_[1], $_[2], $_[3], $_[4]) 191 $img->sub_rect ($_[0], $_[1], $w, $h)
192 }
193
194=item scale $img
195
196=item scale $size_percent, $img
197
198=item scale $width_percent, $height_percent, $img
199
200Scales the image by the given percentages in horizontal
201(C<$width_percent>) and vertical (C<$height_percent>) direction.
202
203If only one percentage is give, it is used for both directions.
204
205If no percentages are given, scales the image to the window size without
206keeping aspect.
207
208=item resize $width, $height, $img
209
210Resizes the image to exactly C<$width> times C<$height> pixels.
211
212=cut
213
214#TODO: maximise, maximise_fill?
215
216 sub scale($$$) {
217 my $img = pop;
218
219 @_ == 2 ? $img->scale ($_[0] * $img->w * 0.01, $_[1] * $img->h * 0.01)
220 : @_ ? $img->scale ($_[0] * $img->w * 0.01, $_[0] * $img->h * 0.01)
221 : $img->scale (W, H)
74 } 222 }
75 223
76 sub resize($$$) { 224 sub resize($$$) {
77 my $img = pop; 225 my $img = pop;
78 $img->scale ($_[0], $_[1]) 226 $img->scale ($_[0], $_[1])
79 } 227 }
80 228
81 # TODO: ugly 229 # TODO: ugly
82 sub move($$;$) { 230 sub move($$;$) {
231 my $img = pop->clone;
232 $img->move ($_[0], $_[1]);
233 $img
83 my $img = pop; 234# my $img = pop;
84 $img->sub_rect ( 235# $img->sub_rect (
85 $_[0], $_[1], 236# $_[0], $_[1],
86 $img->w, $img->h, 237# $img->w, $img->h,
87 $_[2], 238# $_[2],
88 ) 239# )
89 } 240 }
90 241
91 sub rotate($$$$$$;$) { 242 sub rotate($$$$$$) {
92 my $img = pop; 243 my $img = pop;
93 $img->rotate ( 244 $img->rotate (
94 $_[0], 245 $_[0],
95 $_[1], 246 $_[1],
96 $_[2] * $img->w * .01, 247 $_[2] * $img->w * .01,
97 $_[3] * $img->h * .01, 248 $_[3] * $img->h * .01,
98 $_[4] * (3.14159265 / 180), 249 $_[4] * (3.14159265 / 180),
99 $_[5],
100 ) 250 )
101 } 251 }
102 252
103 sub blur($$$) { 253 sub blur($$;$) {
104 my ($rh, $rv, $img) = @_; 254 my $img = pop;
105 255
106 $img->blur ($rh, $rv); 256 $img->blur ($_[0], @_ >= 2 ? $_[1] : $_[0]);
107 } 257 }
108 258
109 sub contrast($$;$$;$) { 259 sub contrast($$;$$;$) {
110 my $img = pop; 260 my $img = pop;
111 my ($r, $g, $b, $a) = @_; 261 my ($r, $g, $b, $a) = @_;
… …
126 $a = 1 if @_ < 5; 276 $a = 1 if @_ < 5;
127 277
128 $img = $img->clone; 278 $img = $img->clone;
129 $img->brightness ($r, $g, $b, $a); 279 $img->brightness ($r, $g, $b, $a);
130 $img 280 $img
131 }
132
133 sub X() { $new->{position_sensitive} = 1; $l }
134 sub Y() { $new->{position_sensitive} = 1; $t }
135 sub W() { $new->{size_sensitive} = 1; $w }
136 sub H() { $new->{size_sensitive} = 1; $h }
137
138 sub now() { urxvt::NOW }
139
140 sub again($) {
141 $new->{again} = $_[0];
142 }
143
144 sub counter($) {
145 $new->{again} = $_[0];
146 $bgdsl_self->{counter} + 0
147 } 281 }
148 282
149=back 283=back
150 284
151=cut 285=cut
… …
186 local $bgdsl_self = $self; 320 local $bgdsl_self = $self;
187 321
188 local $old = $self->{state}; 322 local $old = $self->{state};
189 local $new = my $state = $self->{state} = {}; 323 local $new = my $state = $self->{state} = {};
190 324
325 my $border = 0; #d#
326
191 ($l, $t, $w, $h) = 327 ($x, $y, $w, $h) =
192 $self->get_geometry; 328 $self->background_geometry ($border);
193 329
194 # evaluate user expression 330 # evaluate user expression
195 331
196 my $img = eval { $self->{expr}->() }; 332 my $img = eval { $self->{expr}->() };
197 warn $@ if $@;#d# 333 warn $@ if $@;#d#
… …
244 # prepare and set background pixmap 380 # prepare and set background pixmap
245 381
246 $img = $img->sub_rect (0, 0, $w, $h) 382 $img = $img->sub_rect (0, 0, $w, $h)
247 if $img->w != $w || $img->h != $h; 383 if $img->w != $w || $img->h != $h;
248 384
249 $self->set_background ($img); 385 $self->set_background ($img, $border);
250 $self->scr_recolour (0); 386 $self->scr_recolour (0);
251 $self->want_refresh; 387 $self->want_refresh;
252} 388}
253 389
254sub on_start { 390sub on_start {

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