| … | |
… | |
| 285 | =cut |
285 | =cut |
| 286 | |
286 | |
| 287 | sub solid($;$$) { |
287 | sub solid($;$$) { |
| 288 | my $colour = pop; |
288 | my $colour = pop; |
| 289 | |
289 | |
| 290 | my $img = $self->new_img (urxvt::PictStandardARGB32, $_[0] || 1, $_[1] || 1); |
290 | my $img = $self->new_img (urxvt::PictStandardARGB32, 0, 0, $_[0] || 1, $_[1] || 1); |
| 291 | $img->fill ($colour); |
291 | $img->fill ($colour); |
| 292 | $img |
292 | $img |
| 293 | } |
293 | } |
| 294 | |
294 | |
| 295 | =item clone $img |
295 | =item clone $img |
| … | |
… | |
| 303 | $_[0]->clone |
303 | $_[0]->clone |
| 304 | } |
304 | } |
| 305 | |
305 | |
| 306 | =item merge $img ... |
306 | =item merge $img ... |
| 307 | |
307 | |
| 308 | Takes any number of images and merges them together, creating a single image containing them all. |
308 | Takes any number of images and merges them together, creating a single |
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309 | image containing them all. |
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310 | |
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311 | This function is called automatically when an expression returns multiple |
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312 | images. |
| 309 | |
313 | |
| 310 | =cut |
314 | =cut |
| 311 | |
315 | |
| 312 | sub merge(@) { |
316 | sub merge(@) { |
| 313 | #TODO |
317 | return $_[0] unless $#_; |
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318 | |
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319 | # rather annoyingly clumsy, but optimisation is for another time |
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320 | |
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321 | my $x0 = +1e9; |
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322 | my $y0 = +1e9; |
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323 | my $x1 = -1e9; |
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324 | my $y1 = -1e9; |
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325 | |
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326 | for (@_) { |
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327 | my ($x, $y, $w, $h) = $_->geometry; |
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328 | |
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329 | $x0 = $x if $x0 > $x; |
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330 | $y0 = $y if $y0 > $y; |
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331 | |
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332 | $x += $w; |
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333 | $y += $h; |
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334 | |
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335 | $x1 = $x if $x1 < $x; |
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336 | $y1 = $y if $y1 < $y; |
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337 | } |
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338 | |
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339 | my $base = $self->new_img (urxvt::PictStandardARGB32, $x0, $y0, $x1 - $x0, $y1 - $y0); |
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340 | $base->fill ([0, 0, 0, 0]); |
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341 | |
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342 | $base->draw ($_) |
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343 | for @_; |
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344 | |
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345 | $base |
| 314 | } |
346 | } |
| 315 | |
347 | |
| 316 | =head2 TILING MODES |
348 | =head2 TILING MODES |
| 317 | |
349 | |
| 318 | The following operators modify the tiling mode of an image, that is, the |
350 | The following operators modify the tiling mode of an image, that is, the |
| … | |
… | |
| 670 | =cut |
702 | =cut |
| 671 | |
703 | |
| 672 | sub rotate($$$$) { |
704 | sub rotate($$$$) { |
| 673 | my $img = pop; |
705 | my $img = pop; |
| 674 | $img->rotate ( |
706 | $img->rotate ( |
| 675 | $_[0] * $img->w, |
707 | $_[0] * ($img->w + $img->x), |
| 676 | $_[1] * $img->h, |
708 | $_[1] * ($img->h + $img->y), |
| 677 | $_[2] * (3.14159265 / 180), |
709 | $_[2] * (3.14159265 / 180), |
| 678 | ) |
710 | ) |
| 679 | } |
711 | } |
| 680 | |
712 | |
| 681 | =back |
713 | =back |
| … | |
… | |
| 878 | ($x, $y, $w, $h) = |
910 | ($x, $y, $w, $h) = |
| 879 | $self->background_geometry ($self->{border}); |
911 | $self->background_geometry ($self->{border}); |
| 880 | |
912 | |
| 881 | # evaluate user expression |
913 | # evaluate user expression |
| 882 | |
914 | |
| 883 | my $img = eval { $self->{expr}->() }; |
915 | my $img = eval { urxvt::bgdsl::merge $self->{expr}->() }; |
| 884 | warn $@ if $@;#d# |
916 | die $@ if $@; |
| 885 | die "background-expr did not return an image.\n" if !UNIVERSAL::isa $img, "urxvt::img"; |
917 | die "background-expr did not return an image.\n" if !UNIVERSAL::isa $img, "urxvt::img"; |
| 886 | |
918 | |
| 887 | # if the expression is sensitive to external events, prepare reevaluation then |
919 | # if the expression is sensitive to external events, prepare reevaluation then |
| 888 | |
920 | |
| 889 | my $again = delete $state->{again}; |
921 | my $again = delete $state->{again}; |
