| 1 |
<?php |
| 2 |
/** |
| 3 |
* Rewrites receipt HTML into Dompdf-friendly markup before PDF rendering. |
| 4 |
* |
| 5 |
* Dompdf has no CSS Flexbox or Grid layout engine — it silently maps |
| 6 |
* `display:flex` / `display:grid` to `block`, which collapses receipt rows |
| 7 |
* built as columns. The previous approach shimmed this with CSS attribute |
| 8 |
* selectors keyed on inline-style substrings, but that only covered the exact |
| 9 |
* pixel values used by the bundled templates and leaned on Dompdf floats, |
| 10 |
* whose placement is buggy (consecutive floated values stack leftward). |
| 11 |
* |
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* This preprocessor instead parses the HTML and rewrites every inline-styled |
| 13 |
* flex/grid container into a real `<table>` — Dompdf's most reliable layout |
| 14 |
* primitive — computing cell widths from the actual `flex` / |
| 15 |
* `grid-template-columns` / `gap` values, so customized templates work as well |
| 16 |
* as the bundled ones. It also lifts the root element's padding into `@page` |
| 17 |
* margins so the PDF page box matches the on-screen preview (Dompdf's default |
| 18 |
* 1.2cm page margin would otherwise be added on top of the template padding). |
| 19 |
* |
| 20 |
* Supported CSS subset (template authors take note): |
| 21 |
* - Inline `style=""` declarations only; class/stylesheet-based flex is not |
| 22 |
* rewritten (the bundled legacy template's classes are shimmed separately |
| 23 |
* in Pdf_Renderer::LEGACY_FLEX_SHIM). |
| 24 |
* - Lengths in `px`/`pt` only — other units in `gap`/`flex-basis`/`padding` |
| 25 |
* fall back to shrink-to-content / unlifted padding. |
| 26 |
* - `grid-template-columns`: `fr`, `px`, `auto`, and `repeat(N, …)`; |
| 27 |
* `minmax()`/`%` degrade to an even flexible column. Children are chunked |
| 28 |
* into rows of N columns (row auto-flow only). |
| 29 |
* - `justify-content: space-between|space-around|space-evenly` rows become |
| 30 |
* label/value tables with the last cell right-aligned; `center|flex-end` |
| 31 |
* runs become text-aligned inline-blocks when no child has a fixed basis. |
| 32 |
* - The padding lift requires a single root element. |
| 33 |
* |
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* Only the PDF render path uses this class; gallery templates and live |
| 35 |
* previews are never modified. |
| 36 |
* |
| 37 |
* @package WCPOS\WooCommercePOS\Services |
| 38 |
*/ |
| 39 |
|
| 40 |
namespace WCPOS\WooCommercePOS\Services; |
| 41 |
|
| 42 |
use DOMDocument; |
| 43 |
use DOMElement; |
| 44 |
|
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/** |
| 46 |
* Pdf_Layout_Preprocessor class. |
| 47 |
*/ |
| 48 |
class Pdf_Layout_Preprocessor { |
| 49 |
|
| 50 |
/** |
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* Points per CSS pixel (72dpi PDF space vs 96dpi CSS space). |
| 52 |
*/ |
| 53 |
private const PT_PER_PX = 0.75; |
| 54 |
|
| 55 |
/** |
| 56 |
* Root padding lifted off the receipt wrapper, as @page margins in pt |
| 57 |
* (top, right, bottom, left). Zero margins when no padding was lifted — |
| 58 |
* the preview shows none around an unpadded root either. |
| 59 |
* |
| 60 |
* @var float[] |
| 61 |
*/ |
| 62 |
private $page_margins_pt = array( 0.0, 0.0, 0.0, 0.0 ); |
| 63 |
|
| 64 |
/** |
| 65 |
* Whether the last process() input was a full HTML document. |
| 66 |
* |
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* @var bool |
| 68 |
*/ |
| 69 |
private $full_document = false; |
| 70 |
|
| 71 |
/** |
| 72 |
* Rewrite flex/grid receipt markup into Dompdf-friendly tables. |
| 73 |
* |
| 74 |
* Fragments (logicless/thermal output) additionally get their root padding |
| 75 |
* lifted into @page margins. Full documents (the legacy-php template) keep |
| 76 |
* their <head> stylesheet and page box untouched: only the in-body flex |
| 77 |
* containers and known legacy classes are rewritten. |
| 78 |
* |
| 79 |
* @param string $html Receipt HTML (fragment or full document). |
| 80 |
* |
| 81 |
* @return string The rewritten HTML. |
| 82 |
*/ |
| 83 |
public function process( string $html ): string { |
| 84 |
$this->page_margins_pt = array( 0.0, 0.0, 0.0, 0.0 ); |
| 85 |
$this->full_document = false; |
| 86 |
|
| 87 |
if ( '' === trim( $html ) ) { |
| 88 |
return $html; |
| 89 |
} |
| 90 |
|
| 91 |
$full_document = false !== stripos( $html, '<html' ); |
| 92 |
$this->full_document = $full_document; |
| 93 |
|
| 94 |
$dom = new DOMDocument( '1.0', 'UTF-8' ); |
| 95 |
$previous = libxml_use_internal_errors( true ); |
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// The processing instruction pins the parser to UTF-8 for fragments; |
| 97 |
// loadHTML otherwise assumes ISO-8859-1 and mangles multibyte text. |
| 98 |
$loaded = $dom->loadHTML( '<?xml encoding="UTF-8">' . $html ); |
| 99 |
libxml_clear_errors(); |
| 100 |
libxml_use_internal_errors( $previous ); |
| 101 |
|
| 102 |
if ( ! $loaded ) { |
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return $html; |
| 104 |
} |
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|
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$body = $dom->getElementsByTagName( 'body' )->item( 0 ); |
| 107 |
if ( ! $body instanceof DOMElement ) { |
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return $html; |
| 109 |
} |
| 110 |
|
| 111 |
if ( ! $full_document ) { |
| 112 |
$this->lift_root_padding( $body ); |
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} |
| 114 |
$this->transform_children( $body ); |
| 115 |
|
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if ( $full_document ) { |
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// Serialize the whole document so <head> styles survive, dropping |
| 118 |
// the synthetic XML prolog the UTF-8 pinning added. |
| 119 |
foreach ( $dom->childNodes as $node ) { |
| 120 |
if ( XML_PI_NODE === $node->nodeType ) { |
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$dom->removeChild( $node ); |
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break; |
| 123 |
} |
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} |
| 125 |
|
| 126 |
return (string) $dom->saveHTML(); |
| 127 |
} |
| 128 |
|
| 129 |
$out = ''; |
| 130 |
foreach ( $body->childNodes as $child ) { |
| 131 |
$out .= $dom->saveHTML( $child ); |
| 132 |
} |
| 133 |
|
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return $out; |
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} |
| 136 |
|
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/** |
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* Page margins (pt) lifted from the receipt root padding by process(). |
| 139 |
* |
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* Only meaningful after process() has run; zeros otherwise. |
| 141 |
* |
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* @return float[] [top, right, bottom, left] in pt. |
| 143 |
*/ |
| 144 |
public function get_page_margins_pt(): array { |
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return $this->page_margins_pt; |
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} |
| 147 |
|
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/** |
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* Whether the last process() input was a full HTML document. |
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* |
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* Callers branch on this instead of sniffing the markup themselves, so the |
| 152 |
* renderer and the preprocessor can never disagree about which treatment |
| 153 |
* (fragment @page margins vs. document-owned page box) an input received. |
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* |
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* @return bool |
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*/ |
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public function is_full_document(): bool { |
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return $this->full_document; |
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} |
| 160 |
|
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/** |
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* Move the root element's padding into @page margins. |
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* |
| 164 |
* The browser preview shows the template's own root padding as the only |
| 165 |
* whitespace around the receipt. Replacing Dompdf's default 1.2cm page |
| 166 |
* margin with that padding keeps page one identical to the preview and |
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* gives later pages the same consistent margins. |
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* |
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* @param DOMElement $body The document body. |
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*/ |
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private function lift_root_padding( DOMElement $body ): void { |
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$root = null; |
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foreach ( $body->childNodes as $child ) { |
| 174 |
if ( $child instanceof DOMElement ) { |
| 175 |
if ( null !== $root ) { |
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return; // Multiple roots — ambiguous, leave padding alone. |
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} |
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$root = $child; |
| 179 |
} elseif ( XML_TEXT_NODE === $child->nodeType && '' !== trim( (string) $child->nodeValue ) ) { |
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return; // Loose text next to the root element. |
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} |
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} |
| 183 |
|
| 184 |
if ( null === $root ) { |
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return; |
| 186 |
} |
| 187 |
|
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$styles = self::parse_styles( $root->getAttribute( 'style' ) ); |
| 189 |
$padding = self::resolve_padding_px( $styles ); |
| 190 |
if ( null === $padding ) { |
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return; |
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} |
| 193 |
|
| 194 |
unset( $styles['padding'], $styles['padding-top'], $styles['padding-right'], $styles['padding-bottom'], $styles['padding-left'] ); |
| 195 |
self::set_styles( $root, $styles ); |
| 196 |
|
| 197 |
$this->page_margins_pt = array_map( |
| 198 |
static function ( float $px ): float { |
| 199 |
return round( $px * self::PT_PER_PX, 2 ); |
| 200 |
}, |
| 201 |
$padding |
| 202 |
); |
| 203 |
} |
| 204 |
|
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/** |
| 206 |
* Recursively transform flex/grid containers, deepest first. |
| 207 |
* |
| 208 |
* @param DOMElement $element The element whose children to transform. |
| 209 |
*/ |
| 210 |
private function transform_children( DOMElement $element ): void { |
| 211 |
// Snapshot: transformation replaces nodes in place. |
| 212 |
$children = array(); |
| 213 |
foreach ( $element->childNodes as $child ) { |
| 214 |
if ( $child instanceof DOMElement ) { |
| 215 |
$children[] = $child; |
| 216 |
} |
| 217 |
} |
| 218 |
|
| 219 |
foreach ( $children as $child ) { |
| 220 |
$this->transform_children( $child ); |
| 221 |
$this->transform_element( $child ); |
| 222 |
} |
| 223 |
} |
| 224 |
|
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/** |
| 226 |
* Transform a single flex/grid container into Dompdf-friendly markup. |
| 227 |
* |
| 228 |
* @param DOMElement $element The candidate container. |
| 229 |
*/ |
| 230 |
private function transform_element( DOMElement $element ): void { |
| 231 |
$styles = self::parse_styles( $element->getAttribute( 'style' ) ); |
| 232 |
$display = isset( $styles['display'] ) ? strtolower( $styles['display'] ) : ''; |
| 233 |
|
| 234 |
if ( 'inline-flex' === $display || 'inline-grid' === $display ) { |
| 235 |
$this->convert_inline_flex( $element, $styles ); |
| 236 |
return; |
| 237 |
} |
| 238 |
|
| 239 |
if ( 'flex' !== $display && 'grid' !== $display ) { |
| 240 |
// The bundled legacy-php template declares its flex in a <head> |
| 241 |
// stylesheet rather than inline styles; its class names are stable, |
| 242 |
// so they get the same table treatment, keyed by class. |
| 243 |
$this->convert_legacy_classes( $element ); |
| 244 |
return; |
| 245 |
} |
| 246 |
|
| 247 |
$children = self::element_children( $element ); |
| 248 |
if ( 0 === \count( $children ) ) { |
| 249 |
// Spacer divs (e.g. divider lines) just need flex dropped. |
| 250 |
unset( $styles['display'] ); |
| 251 |
self::set_styles( $element, $styles ); |
| 252 |
return; |
| 253 |
} |
| 254 |
|
| 255 |
$justify = isset( $styles['justify-content'] ) ? strtolower( $styles['justify-content'] ) : ''; |
| 256 |
|
| 257 |
// Column flex stacks children like normal block flow; a row table |
| 258 |
// would rotate the content sideways. |
| 259 |
$direction = isset( $styles['flex-direction'] ) ? strtolower( trim( $styles['flex-direction'] ) ) : ''; |
| 260 |
if ( 'flex' === $display && 0 === strpos( $direction, 'column' ) ) { |
| 261 |
$this->convert_column_stack( $element, $styles, $children ); |
| 262 |
return; |
| 263 |
} |
| 264 |
|
| 265 |
// Simple aligned runs (a right-pushed barcode, a centered badge row) |
| 266 |
// read better as text-aligned inline-blocks than as a table. |
| 267 |
if ( \in_array( $justify, array( 'flex-end', 'end', 'right', 'center' ), true ) && ! self::has_sized_child( $children ) ) { |
| 268 |
$this->convert_aligned_run( $element, $styles, $children, $justify ); |
| 269 |
return; |
| 270 |
} |
| 271 |
|
| 272 |
if ( 'grid' === $display ) { |
| 273 |
$this->convert_grid( $element, $styles, $children ); |
| 274 |
return; |
| 275 |
} |
| 276 |
|
| 277 |
$this->convert_flex_row( $element, $styles, $children ); |
| 278 |
} |
| 279 |
|
| 280 |
/** |
| 281 |
* Convert a flex row into a single-row table. |
| 282 |
* |
| 283 |
* @param DOMElement $element The flex container. |
| 284 |
* @param array $styles Parsed container styles. |
| 285 |
* @param DOMElement[] $children The container's element children. |
| 286 |
*/ |
| 287 |
private function convert_flex_row( DOMElement $element, array $styles, array $children ): void { |
| 288 |
$justify = isset( $styles['justify-content'] ) ? strtolower( $styles['justify-content'] ) : ''; |
| 289 |
$gap = self::parse_gap_px( $styles ); |
| 290 |
|
| 291 |
$specs = array(); |
| 292 |
$grow_count = 0; |
| 293 |
$has_fixed = false; |
| 294 |
foreach ( $children as $child ) { |
| 295 |
$spec = self::flex_child_spec( $child ); |
| 296 |
if ( 'grow' === $spec['kind'] ) { |
| 297 |
++$grow_count; |
| 298 |
} |
| 299 |
if ( 'fixed' === $spec['kind'] ) { |
| 300 |
$has_fixed = true; |
| 301 |
} |
| 302 |
$specs[] = $spec; |
| 303 |
} |
| 304 |
|
| 305 |
// space-between label/value rows: let the table spread the cells and |
| 306 |
// right-align the last one, mirroring how the browser pushes it flush. |
| 307 |
$space_between = \in_array( $justify, array( 'space-between', 'space-around', 'space-evenly' ), true ); |
| 308 |
|
| 309 |
// All children grow equally (e.g. three flex:1 sign-off columns): |
| 310 |
// fixed layout splits the width evenly like flexbox would. |
| 311 |
$equal_split = ! $space_between && ! $has_fixed && \count( $children ) === $grow_count && $grow_count > 1; |
| 312 |
|
| 313 |
$table = $this->build_table( $element, $styles ); |
| 314 |
if ( $equal_split ) { |
| 315 |
self::append_style( $table, 'table-layout', 'fixed' ); |
| 316 |
} |
| 317 |
|
| 318 |
$row = $element->ownerDocument->createElement( 'tr' ); |
| 319 |
$table->appendChild( $row ); |
| 320 |
|
| 321 |
$valign = self::vertical_align( $styles ); |
| 322 |
$last = \count( $children ) - 1; |
| 323 |
|
| 324 |
foreach ( $children as $i => $child ) { |
| 325 |
$cell_styles = array( 'vertical-align' => $valign ); |
| 326 |
|
| 327 |
if ( $i > 0 && $gap[1] > 0 ) { |
| 328 |
$cell_styles['padding-left'] = self::css_number( $gap[1] ) . 'px'; |
| 329 |
} |
| 330 |
|
| 331 |
$spec = $specs[ $i ]; |
| 332 |
if ( 'fixed' === $spec['kind'] ) { |
| 333 |
$cell_styles['width'] = $spec['width']; |
| 334 |
} elseif ( 'shrink' === $spec['kind'] && ! $space_between ) { |
| 335 |
// width:1% + nowrap shrinks the cell to its content like |
| 336 |
// flex-basis:auto would; remaining width flows to grow cells. |
| 337 |
$cell_styles['width'] = '1%'; |
| 338 |
$cell_styles['white-space'] = 'nowrap'; |
| 339 |
} |
| 340 |
|
| 341 |
if ( $space_between && $i === $last && $i > 0 ) { |
| 342 |
$cell_styles['text-align'] = 'right'; |
| 343 |
} elseif ( $space_between && $i > 0 && $i < $last ) { |
| 344 |
$cell_styles['text-align'] = 'center'; |
| 345 |
} |
| 346 |
|
| 347 |
$this->append_cell( $row, $child, $cell_styles ); |
| 348 |
} |
| 349 |
|
| 350 |
$element->parentNode->replaceChild( $table, $element ); |
| 351 |
} |
| 352 |
|
| 353 |
/** |
| 354 |
* Convert a grid into a table, chunking children into rows of N columns. |
| 355 |
* |
| 356 |
* @param DOMElement $element The grid container. |
| 357 |
* @param array $styles Parsed container styles. |
| 358 |
* @param DOMElement[] $children The container's element children. |
| 359 |
*/ |
| 360 |
private function convert_grid( DOMElement $element, array $styles, array $children ): void { |
| 361 |
$columns = self::parse_grid_columns( isset( $styles['grid-template-columns'] ) ? $styles['grid-template-columns'] : '' ); |
| 362 |
if ( 0 === \count( $columns ) ) { |
| 363 |
$columns = array( |
| 364 |
array( |
| 365 |
'kind' => 'fr', |
| 366 |
'value' => 1.0, |
| 367 |
), |
| 368 |
); |
| 369 |
} |
| 370 |
|
| 371 |
$gap = self::parse_gap_px( $styles ); |
| 372 |
$col_n = \count( $columns ); |
| 373 |
$fr_total = 0.0; |
| 374 |
$only_fr = true; |
| 375 |
foreach ( $columns as $column ) { |
| 376 |
if ( 'fr' === $column['kind'] ) { |
| 377 |
$fr_total += $column['value']; |
| 378 |
} else { |
| 379 |
$only_fr = false; |
| 380 |
} |
| 381 |
} |
| 382 |
|
| 383 |
$table = $this->build_table( $element, $styles ); |
| 384 |
if ( $only_fr && $col_n > 1 ) { |
| 385 |
self::append_style( $table, 'table-layout', 'fixed' ); |
| 386 |
} |
| 387 |
|
| 388 |
$valign = self::vertical_align( $styles ); |
| 389 |
$rows = array_chunk( $children, $col_n ); |
| 390 |
|
| 391 |
foreach ( $rows as $row_index => $row_children ) { |
| 392 |
$row = $element->ownerDocument->createElement( 'tr' ); |
| 393 |
$table->appendChild( $row ); |
| 394 |
|
| 395 |
foreach ( $row_children as $i => $child ) { |
| 396 |
$cell_styles = array( 'vertical-align' => $valign ); |
| 397 |
|
| 398 |
if ( $i > 0 && $gap[1] > 0 ) { |
| 399 |
$cell_styles['padding-left'] = self::css_number( $gap[1] ) . 'px'; |
| 400 |
} |
| 401 |
if ( $row_index > 0 && $gap[0] > 0 ) { |
| 402 |
$cell_styles['padding-top'] = self::css_number( $gap[0] ) . 'px'; |
| 403 |
} |
| 404 |
|
| 405 |
$column = $columns[ $i ]; |
| 406 |
if ( 'px' === $column['kind'] ) { |
| 407 |
$cell_styles['width'] = self::css_number( $column['value'] ) . 'px'; |
| 408 |
} elseif ( 'auto' === $column['kind'] ) { |
| 409 |
$cell_styles['width'] = '1%'; |
| 410 |
$cell_styles['white-space'] = 'nowrap'; |
| 411 |
} elseif ( $only_fr && $fr_total > 0 ) { |
| 412 |
$cell_styles['width'] = self::css_number( $column['value'] / $fr_total * 100 ) . '%'; |
| 413 |
} |
| 414 |
|
| 415 |
$this->append_cell( $row, $child, $cell_styles ); |
| 416 |
} |
| 417 |
} |
| 418 |
|
| 419 |
$element->parentNode->replaceChild( $table, $element ); |
| 420 |
} |
| 421 |
|
| 422 |
/** |
| 423 |
* Convert a column flex container into a plain block stack. |
| 424 |
* |
| 425 |
* @param DOMElement $element The flex container. |
| 426 |
* @param array $styles Parsed container styles. |
| 427 |
* @param DOMElement[] $children The container's element children. |
| 428 |
*/ |
| 429 |
private function convert_column_stack( DOMElement $element, array $styles, array $children ): void { |
| 430 |
$gap = self::parse_gap_px( $styles ); |
| 431 |
|
| 432 |
self::strip_layout_styles( $styles ); |
| 433 |
self::set_styles( $element, $styles ); |
| 434 |
|
| 435 |
foreach ( $children as $i => $child ) { |
| 436 |
$child_styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 437 |
self::strip_flex_child_styles( $child_styles ); |
| 438 |
if ( $i > 0 && $gap[0] > 0 ) { |
| 439 |
$child_styles['margin-top'] = self::css_number( $gap[0] ) . 'px'; |
| 440 |
} |
| 441 |
self::set_styles( $child, $child_styles ); |
| 442 |
} |
| 443 |
} |
| 444 |
|
| 445 |
/** |
| 446 |
* Convert a centered/right-aligned flex run into text-aligned inline-blocks. |
| 447 |
* |
| 448 |
* @param DOMElement $element The flex container. |
| 449 |
* @param array $styles Parsed container styles. |
| 450 |
* @param DOMElement[] $children The container's element children. |
| 451 |
* @param string $justify The normalized justify-content value. |
| 452 |
*/ |
| 453 |
private function convert_aligned_run( DOMElement $element, array $styles, array $children, string $justify ): void { |
| 454 |
$gap = self::parse_gap_px( $styles ); |
| 455 |
|
| 456 |
self::strip_layout_styles( $styles ); |
| 457 |
$styles['text-align'] = 'center' === $justify ? 'center' : 'right'; |
| 458 |
self::set_styles( $element, $styles ); |
| 459 |
|
| 460 |
foreach ( $children as $i => $child ) { |
| 461 |
$child_styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 462 |
self::strip_flex_child_styles( $child_styles ); |
| 463 |
$child_styles['display'] = 'inline-block'; |
| 464 |
if ( $i > 0 && $gap[1] > 0 ) { |
| 465 |
$child_styles['margin-left'] = self::css_number( $gap[1] ) . 'px'; |
| 466 |
} |
| 467 |
self::set_styles( $child, $child_styles ); |
| 468 |
} |
| 469 |
} |
| 470 |
|
| 471 |
/** |
| 472 |
* Convert an inline-flex container (status pills) into inline-blocks. |
| 473 |
* |
| 474 |
* The pill's dot is a fixed-size span; inline-block lets its width/height |
| 475 |
* apply, which plain inline display would collapse. Whitespace between the |
| 476 |
* chip's parts becomes non-breaking: a flex row never wraps its items, and |
| 477 |
* Dompdf's word-based minimum-width sizing would otherwise wrap the chip |
| 478 |
* inside shrink-to-content table cells. |
| 479 |
* |
| 480 |
* @param DOMElement $element The inline-flex container. |
| 481 |
* @param array $styles Parsed container styles. |
| 482 |
*/ |
| 483 |
private function convert_inline_flex( DOMElement $element, array $styles ): void { |
| 484 |
$gap = self::parse_gap_px( $styles ); |
| 485 |
|
| 486 |
self::strip_layout_styles( $styles ); |
| 487 |
$styles['display'] = 'inline-block'; |
| 488 |
self::set_styles( $element, $styles ); |
| 489 |
|
| 490 |
foreach ( $element->childNodes as $node ) { |
| 491 |
if ( XML_TEXT_NODE === $node->nodeType && null !== $node->nodeValue ) { |
| 492 |
$node->nodeValue = (string) preg_replace( '/\s+/u', "\u{00A0}", $node->nodeValue ); |
| 493 |
} |
| 494 |
} |
| 495 |
// Multibyte-safe trim: ltrim/rtrim would strip the NBSP's individual |
| 496 |
// bytes and corrupt adjacent UTF-8 characters (e.g. £ shares 0xC2). |
| 497 |
$first = $element->firstChild; |
| 498 |
if ( null !== $first && XML_TEXT_NODE === $first->nodeType ) { |
| 499 |
$first->nodeValue = (string) preg_replace( '/^\x{00A0}+/u', '', (string) $first->nodeValue ); |
| 500 |
} |
| 501 |
$last = $element->lastChild; |
| 502 |
if ( null !== $last && XML_TEXT_NODE === $last->nodeType ) { |
| 503 |
$last->nodeValue = (string) preg_replace( '/\x{00A0}+$/u', '', (string) $last->nodeValue ); |
| 504 |
} |
| 505 |
|
| 506 |
$children = self::element_children( $element ); |
| 507 |
foreach ( $children as $child ) { |
| 508 |
$child_styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 509 |
self::strip_flex_child_styles( $child_styles ); |
| 510 |
// Natural baseline alignment, not vertical-align:middle — Dompdf |
| 511 |
// raises "middle" inline-blocks to cap height, floating the chip's |
| 512 |
// dot above the label. On the baseline a fixed-size dot's optical |
| 513 |
// center lands at the uppercase midline, matching the browser's |
| 514 |
// flex centering (Dompdf ignores length values for vertical-align, |
| 515 |
// so a fine-tuned offset is not an option). |
| 516 |
$child_styles['display'] = 'inline-block'; |
| 517 |
// Mirror the flex gap after every child that has following content |
| 518 |
// — a chip's label may be a bare text node, which margin-left on |
| 519 |
// the next element child could never reach. |
| 520 |
if ( $gap[1] > 0 && self::has_following_content( $child ) ) { |
| 521 |
$child_styles['margin-right'] = self::css_number( $gap[1] ) . 'px'; |
| 522 |
} |
| 523 |
self::set_styles( $child, $child_styles ); |
| 524 |
} |
| 525 |
} |
| 526 |
|
| 527 |
/** |
| 528 |
* Rewrite the bundled legacy template's class-based flex containers. |
| 529 |
* |
| 530 |
* The legacy receipt.php keeps its layout in a <head> stylesheet, which the |
| 531 |
* inline-style transforms cannot see. Its class names are stable, so the |
| 532 |
* known containers are wrapped IN PLACE: the element keeps its class (the |
| 533 |
* stylesheet's colors/spacing still apply; its display:flex degrades to |
| 534 |
* block under Dompdf) and the children move into a real table inside it. |
| 535 |
* Without width hints Dompdf's auto table layout distributes leftover width |
| 536 |
* across all cells, inflating the logo cell and drifting floated values. |
| 537 |
* |
| 538 |
* @param DOMElement $element The candidate element. |
| 539 |
*/ |
| 540 |
private function convert_legacy_classes( DOMElement $element ): void { |
| 541 |
if ( self::has_class( $element, 'receipt-header' ) ) { |
| 542 |
$this->wrap_legacy_header( $element ); |
| 543 |
return; |
| 544 |
} |
| 545 |
|
| 546 |
if ( self::has_class( $element, 'status-pill' ) ) { |
| 547 |
$this->convert_legacy_status_pill( $element ); |
| 548 |
return; |
| 549 |
} |
| 550 |
|
| 551 |
$is_label_value_row = self::has_class( $element, 'totals-row' ) |
| 552 |
|| self::has_class( $element, 'payment-row' ) |
| 553 |
|| self::has_class( $element, 'payment-sub' ) |
| 554 |
|| ( self::has_class( $element, 'row' ) && self::has_ancestor_class( $element, 'card' ) ); |
| 555 |
|
| 556 |
if ( $is_label_value_row ) { |
| 557 |
$this->wrap_legacy_label_value_row( $element ); |
| 558 |
} |
| 559 |
} |
| 560 |
|
| 561 |
/** |
| 562 |
* Convert the legacy status pill into an unbreakable inline-block chip. |
| 563 |
* |
| 564 |
* The stylesheet's inline-flex/gap are invisible here, so the chip gets |
| 565 |
* inline display:inline-block (winning over the stylesheet), the dot keeps |
| 566 |
* natural baseline alignment (Dompdf raises vertical-align:middle to cap |
| 567 |
* height), and the flex gap is mirrored as a margin on element children |
| 568 |
* that have following content (the label is a bare text node). |
| 569 |
* |
| 570 |
* @param DOMElement $element The .status-pill element. |
| 571 |
*/ |
| 572 |
private function convert_legacy_status_pill( DOMElement $element ): void { |
| 573 |
self::append_style( $element, 'display', 'inline-block' ); |
| 574 |
|
| 575 |
foreach ( self::element_children( $element ) as $child ) { |
| 576 |
$child_styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 577 |
$child_styles['display'] = 'inline-block'; |
| 578 |
if ( self::has_following_content( $child ) ) { |
| 579 |
// The stylesheet's flex gap (6px), mirrored from receipt.php. |
| 580 |
$child_styles['margin-right'] = '6px'; |
| 581 |
} |
| 582 |
self::set_styles( $child, $child_styles ); |
| 583 |
} |
| 584 |
|
| 585 |
// Non-breaking whitespace: a flex chip never wraps, and Dompdf's |
| 586 |
// word-based minimum width would otherwise wrap it inside |
| 587 |
// shrink-to-content table cells. |
| 588 |
foreach ( $element->childNodes as $node ) { |
| 589 |
if ( XML_TEXT_NODE === $node->nodeType && null !== $node->nodeValue ) { |
| 590 |
$node->nodeValue = (string) preg_replace( '/\s+/u', "\u{00A0}", trim( (string) $node->nodeValue ) ); |
| 591 |
} |
| 592 |
} |
| 593 |
} |
| 594 |
|
| 595 |
/** |
| 596 |
* Wrap the legacy header's logo/store/meta children in a hinted table. |
| 597 |
* |
| 598 |
* @param DOMElement $element The .receipt-header element. |
| 599 |
*/ |
| 600 |
private function wrap_legacy_header( DOMElement $element ): void { |
| 601 |
$children = self::element_children( $element ); |
| 602 |
if ( 0 === \count( $children ) ) { |
| 603 |
return; |
| 604 |
} |
| 605 |
|
| 606 |
$cells = array(); |
| 607 |
foreach ( $children as $i => $child ) { |
| 608 |
$cell_styles = array( 'vertical-align' => 'top' ); |
| 609 |
if ( $i > 0 ) { |
| 610 |
// The stylesheet's flex gap (22px) — gaps are unreachable from |
| 611 |
// class-based CSS here, so the bundled value is mirrored. |
| 612 |
$cell_styles['padding-left'] = '22px'; |
| 613 |
} |
| 614 |
|
| 615 |
// .logo / .meta shrink to content like flex 0 0 auto; the .store |
| 616 |
// column stays width-less and absorbs the leftover width. |
| 617 |
if ( ! self::has_class( $child, 'store' ) ) { |
| 618 |
$cell_styles['width'] = '1%'; |
| 619 |
$cell_styles['white-space'] = 'nowrap'; |
| 620 |
} |
| 621 |
|
| 622 |
$cells[] = $cell_styles; |
| 623 |
} |
| 624 |
|
| 625 |
$this->wrap_children_in_row_table( $element, $children, $cells ); |
| 626 |
} |
| 627 |
|
| 628 |
/** |
| 629 |
* Wrap a legacy label/value row in a table with a right-aligned last cell. |
| 630 |
* |
| 631 |
* Replaces the old float-right shim for .totals-row/.payment-row/ |
| 632 |
* .payment-sub/.card .row: Dompdf stacks consecutive floats leftward, |
| 633 |
* drifting the lower values (tendered/change) off the edge. |
| 634 |
* |
| 635 |
* @param DOMElement $element The row element. |
| 636 |
*/ |
| 637 |
private function wrap_legacy_label_value_row( DOMElement $element ): void { |
| 638 |
$children = self::element_children( $element ); |
| 639 |
if ( \count( $children ) < 2 ) { |
| 640 |
return; |
| 641 |
} |
| 642 |
|
| 643 |
$last = \count( $children ) - 1; |
| 644 |
$cells = array(); |
| 645 |
foreach ( $children as $i => $child ) { |
| 646 |
$cell_styles = array( 'vertical-align' => 'top' ); |
| 647 |
if ( $i === $last ) { |
| 648 |
$cell_styles['text-align'] = 'right'; |
| 649 |
} |
| 650 |
$cells[] = $cell_styles; |
| 651 |
} |
| 652 |
|
| 653 |
$this->wrap_children_in_row_table( $element, $children, $cells ); |
| 654 |
} |
| 655 |
|
| 656 |
/** |
| 657 |
* Move an element's children into a single-row table inside the element. |
| 658 |
* |
| 659 |
* The container element itself is preserved so its class-based styling |
| 660 |
* (padding, borders, typography) keeps applying. |
| 661 |
* |
| 662 |
* @param DOMElement $element The container element. |
| 663 |
* @param DOMElement[] $children The container's element children. |
| 664 |
* @param array[] $cells Style maps for each cell, by child index. |
| 665 |
*/ |
| 666 |
private function wrap_children_in_row_table( DOMElement $element, array $children, array $cells ): void { |
| 667 |
$document = $element->ownerDocument; |
| 668 |
|
| 669 |
$table = $document->createElement( 'table' ); |
| 670 |
$table->setAttribute( 'style', 'width: 100%; border-spacing: 0' ); |
| 671 |
$row = $document->createElement( 'tr' ); |
| 672 |
$table->appendChild( $row ); |
| 673 |
|
| 674 |
foreach ( $children as $i => $child ) { |
| 675 |
$cell = $document->createElement( 'td' ); |
| 676 |
$style_text = self::build_styles( isset( $cells[ $i ] ) ? $cells[ $i ] : array() ); |
| 677 |
if ( '' !== $style_text ) { |
| 678 |
$cell->setAttribute( 'style', $style_text ); |
| 679 |
} |
| 680 |
$row->appendChild( $cell ); |
| 681 |
$cell->appendChild( $child ); |
| 682 |
} |
| 683 |
|
| 684 |
// Drop leftover inter-child whitespace so it cannot form an extra line |
| 685 |
// box above the table. |
| 686 |
foreach ( iterator_to_array( $element->childNodes ) as $node ) { |
| 687 |
if ( XML_TEXT_NODE === $node->nodeType && '' === trim( (string) $node->nodeValue ) ) { |
| 688 |
$element->removeChild( $node ); |
| 689 |
} |
| 690 |
} |
| 691 |
|
| 692 |
$element->appendChild( $table ); |
| 693 |
} |
| 694 |
|
| 695 |
/** |
| 696 |
* Whether a node is followed by rendered content (element or real text). |
| 697 |
* |
| 698 |
* Whitespace-only and NBSP-only text nodes do not count: chip edge |
| 699 |
* whitespace is trimmed to empty nodes that must not attract gap margins. |
| 700 |
* |
| 701 |
* @param \DOMNode $node The node. |
| 702 |
* |
| 703 |
* @return bool |
| 704 |
*/ |
| 705 |
private static function has_following_content( \DOMNode $node ): bool { |
| 706 |
for ( $next = $node->nextSibling; null !== $next; $next = $next->nextSibling ) { |
| 707 |
if ( $next instanceof DOMElement ) { |
| 708 |
return true; |
| 709 |
} |
| 710 |
if ( XML_TEXT_NODE === $next->nodeType && 1 === preg_match( '/[^\s\x{00A0}]/u', (string) $next->nodeValue ) ) { |
| 711 |
return true; |
| 712 |
} |
| 713 |
} |
| 714 |
|
| 715 |
return false; |
| 716 |
} |
| 717 |
|
| 718 |
/** |
| 719 |
* Whether an element carries a class name. |
| 720 |
* |
| 721 |
* @param DOMElement $element The element. |
| 722 |
* @param string $name The class name. |
| 723 |
* |
| 724 |
* @return bool |
| 725 |
*/ |
| 726 |
private static function has_class( DOMElement $element, string $name ): bool { |
| 727 |
return \in_array( $name, preg_split( '/\s+/', trim( $element->getAttribute( 'class' ) ) ), true ); |
| 728 |
} |
| 729 |
|
| 730 |
/** |
| 731 |
* Whether any ancestor element carries a class name. |
| 732 |
* |
| 733 |
* @param DOMElement $element The element. |
| 734 |
* @param string $name The class name. |
| 735 |
* |
| 736 |
* @return bool |
| 737 |
*/ |
| 738 |
private static function has_ancestor_class( DOMElement $element, string $name ): bool { |
| 739 |
for ( $parent = $element->parentNode; $parent instanceof DOMElement; $parent = $parent->parentNode ) { |
| 740 |
if ( self::has_class( $parent, $name ) ) { |
| 741 |
return true; |
| 742 |
} |
| 743 |
} |
| 744 |
|
| 745 |
return false; |
| 746 |
} |
| 747 |
|
| 748 |
/** |
| 749 |
* Create the replacement table carrying the container's non-layout styles. |
| 750 |
* |
| 751 |
* @param DOMElement $element The flex/grid container being replaced. |
| 752 |
* @param array $styles Parsed container styles. |
| 753 |
* |
| 754 |
* @return DOMElement The new (detached) table element. |
| 755 |
*/ |
| 756 |
private function build_table( DOMElement $element, array $styles ): DOMElement { |
| 757 |
$table = $element->ownerDocument->createElement( 'table' ); |
| 758 |
|
| 759 |
self::strip_layout_styles( $styles ); |
| 760 |
$styles['width'] = '100%'; |
| 761 |
$styles['border-spacing'] = '0'; |
| 762 |
// border-collapse:separate keeps cell padding-based gaps intact. |
| 763 |
|
| 764 |
$style_text = self::build_styles( $styles ); |
| 765 |
if ( '' !== $style_text ) { |
| 766 |
$table->setAttribute( 'style', $style_text ); |
| 767 |
} |
| 768 |
|
| 769 |
foreach ( array( 'class', 'id', 'dir' ) as $attribute ) { |
| 770 |
if ( $element->hasAttribute( $attribute ) ) { |
| 771 |
$table->setAttribute( $attribute, $element->getAttribute( $attribute ) ); |
| 772 |
} |
| 773 |
} |
| 774 |
|
| 775 |
return $table; |
| 776 |
} |
| 777 |
|
| 778 |
/** |
| 779 |
* Append a cell wrapping an original flex/grid child. |
| 780 |
* |
| 781 |
* The child element is moved into the cell unchanged (minus its flex |
| 782 |
* sizing properties), so its own borders, padding and backgrounds keep |
| 783 |
* rendering exactly as authored. |
| 784 |
* |
| 785 |
* @param DOMElement $row The table row. |
| 786 |
* @param DOMElement $child The original container child. |
| 787 |
* @param array $cell_styles Styles for the new cell. |
| 788 |
*/ |
| 789 |
private function append_cell( DOMElement $row, DOMElement $child, array $cell_styles ): void { |
| 790 |
$cell = $row->ownerDocument->createElement( 'td' ); |
| 791 |
$row->appendChild( $cell ); |
| 792 |
|
| 793 |
$style_text = self::build_styles( $cell_styles ); |
| 794 |
if ( '' !== $style_text ) { |
| 795 |
$cell->setAttribute( 'style', $style_text ); |
| 796 |
} |
| 797 |
|
| 798 |
$child_styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 799 |
self::strip_flex_child_styles( $child_styles ); |
| 800 |
self::set_styles( $child, $child_styles ); |
| 801 |
|
| 802 |
$cell->appendChild( $child ); |
| 803 |
} |
| 804 |
|
| 805 |
/** |
| 806 |
* Whether any child carries an explicit flex basis width. |
| 807 |
* |
| 808 |
* @param DOMElement[] $children The container's element children. |
| 809 |
* |
| 810 |
* @return bool |
| 811 |
*/ |
| 812 |
private static function has_sized_child( array $children ): bool { |
| 813 |
foreach ( $children as $child ) { |
| 814 |
if ( 'fixed' === self::flex_child_spec( $child )['kind'] ) { |
| 815 |
return true; |
| 816 |
} |
| 817 |
} |
| 818 |
|
| 819 |
return false; |
| 820 |
} |
| 821 |
|
| 822 |
/** |
| 823 |
* Classify a flex child's sizing from its `flex` shorthand. |
| 824 |
* |
| 825 |
* @param DOMElement $child The flex child. |
| 826 |
* |
| 827 |
* @return array{kind:string,width:string} kind: grow|shrink|fixed|auto. |
| 828 |
*/ |
| 829 |
private static function flex_child_spec( DOMElement $child ): array { |
| 830 |
$styles = self::parse_styles( $child->getAttribute( 'style' ) ); |
| 831 |
$flex = isset( $styles['flex'] ) ? strtolower( trim( $styles['flex'] ) ) : ''; |
| 832 |
|
| 833 |
if ( '' === $flex ) { |
| 834 |
if ( isset( $styles['flex-grow'] ) && (float) $styles['flex-grow'] > 0 ) { |
| 835 |
return array( |
| 836 |
'kind' => 'grow', |
| 837 |
'width' => '', |
| 838 |
); |
| 839 |
} |
| 840 |
|
| 841 |
return array( |
| 842 |
'kind' => 'auto', |
| 843 |
'width' => '', |
| 844 |
); |
| 845 |
} |
| 846 |
|
| 847 |
// flex: auto is the 1 1 auto shorthand — a growing column. |
| 848 |
if ( 'auto' === $flex ) { |
| 849 |
return array( |
| 850 |
'kind' => 'grow', |
| 851 |
'width' => '', |
| 852 |
); |
| 853 |
} |
| 854 |
|
| 855 |
$parts = preg_split( '/\s+/', $flex ); |
| 856 |
$grow = is_numeric( $parts[0] ) ? (float) $parts[0] : 0.0; |
| 857 |
$basis = \count( $parts ) >= 3 ? $parts[2] : ( isset( $parts[1] ) && ! is_numeric( $parts[1] ) ? $parts[1] : 'auto' ); |
| 858 |
if ( 1 === \count( $parts ) && ! is_numeric( $parts[0] ) ) { |
| 859 |
$basis = $parts[0]; |
| 860 |
} |
| 861 |
|
| 862 |
if ( $grow > 0 ) { |
| 863 |
return array( |
| 864 |
'kind' => 'grow', |
| 865 |
'width' => '', |
| 866 |
); |
| 867 |
} |
| 868 |
|
| 869 |
$basis_px = self::length_to_px( $basis ); |
| 870 |
if ( null !== $basis_px && $basis_px > 0 ) { |
| 871 |
return array( |
| 872 |
'kind' => 'fixed', |
| 873 |
'width' => self::css_number( $basis_px ) . 'px', |
| 874 |
); |
| 875 |
} |
| 876 |
|
| 877 |
return array( |
| 878 |
'kind' => 'shrink', |
| 879 |
'width' => '', |
| 880 |
); |
| 881 |
} |
| 882 |
|
| 883 |
/** |
| 884 |
* Parse grid-template-columns into px/fr/auto column specs. |
| 885 |
* |
| 886 |
* @param string $value The grid-template-columns value. |
| 887 |
* |
| 888 |
* @return array<int,array{kind:string,value:float}> |
| 889 |
*/ |
| 890 |
private static function parse_grid_columns( string $value ): array { |
| 891 |
$value = strtolower( trim( $value ) ); |
| 892 |
if ( '' === $value ) { |
| 893 |
return array(); |
| 894 |
} |
| 895 |
|
| 896 |
// Expand simple repeat(N, token) constructs. |
| 897 |
$value = (string) preg_replace_callback( |
| 898 |
'/repeat\(\s*(\d+)\s*,\s*([^()]+)\)/', |
| 899 |
static function ( array $matches ): string { |
| 900 |
return trim( implode( ' ', array_fill( 0, max( 1, (int) $matches[1] ), trim( $matches[2] ) ) ) ); |
| 901 |
}, |
| 902 |
$value |
| 903 |
); |
| 904 |
|
| 905 |
$columns = array(); |
| 906 |
foreach ( preg_split( '/\s+/', $value ) as $token ) { |
| 907 |
if ( '' === $token ) { |
| 908 |
continue; |
| 909 |
} |
| 910 |
|
| 911 |
if ( preg_match( '/^([0-9.]+)fr$/', $token, $m ) ) { |
| 912 |
$columns[] = array( |
| 913 |
'kind' => 'fr', |
| 914 |
'value' => (float) $m[1], |
| 915 |
); |
| 916 |
continue; |
| 917 |
} |
| 918 |
|
| 919 |
if ( 'auto' === $token || 'min-content' === $token || 'max-content' === $token ) { |
| 920 |
$columns[] = array( |
| 921 |
'kind' => 'auto', |
| 922 |
'value' => 0.0, |
| 923 |
); |
| 924 |
continue; |
| 925 |
} |
| 926 |
|
| 927 |
$px = self::length_to_px( $token ); |
| 928 |
if ( null !== $px ) { |
| 929 |
$columns[] = array( |
| 930 |
'kind' => 'px', |
| 931 |
'value' => $px, |
| 932 |
); |
| 933 |
continue; |
| 934 |
} |
| 935 |
|
| 936 |
// Unknown token (minmax(), %) — treat as an even flexible column. |
| 937 |
$columns[] = array( |
| 938 |
'kind' => 'fr', |
| 939 |
'value' => 1.0, |
| 940 |
); |
| 941 |
} |
| 942 |
|
| 943 |
return $columns; |
| 944 |
} |
| 945 |
|
| 946 |
/** |
| 947 |
* Parse the container gap into [row, column] pixels. |
| 948 |
* |
| 949 |
* @param array $styles Parsed container styles. |
| 950 |
* |
| 951 |
* @return array{0:float,1:float} [row gap, column gap] in px. |
| 952 |
*/ |
| 953 |
private static function parse_gap_px( array $styles ): array { |
| 954 |
$row = 0.0; |
| 955 |
$col = 0.0; |
| 956 |
|
| 957 |
if ( isset( $styles['gap'] ) ) { |
| 958 |
$parts = preg_split( '/\s+/', trim( $styles['gap'] ) ); |
| 959 |
$row = (float) ( self::length_to_px( $parts[0] ) ?? 0.0 ); |
| 960 |
$col = isset( $parts[1] ) ? (float) ( self::length_to_px( $parts[1] ) ?? 0.0 ) : $row; |
| 961 |
} |
| 962 |
|
| 963 |
if ( isset( $styles['row-gap'] ) ) { |
| 964 |
$row = (float) ( self::length_to_px( $styles['row-gap'] ) ?? $row ); |
| 965 |
} |
| 966 |
if ( isset( $styles['column-gap'] ) ) { |
| 967 |
$col = (float) ( self::length_to_px( $styles['column-gap'] ) ?? $col ); |
| 968 |
} |
| 969 |
|
| 970 |
return array( $row, $col ); |
| 971 |
} |
| 972 |
|
| 973 |
/** |
| 974 |
* Map align-items to a table-cell vertical-align. |
| 975 |
* |
| 976 |
* @param array $styles Parsed container styles. |
| 977 |
* |
| 978 |
* @return string The vertical-align value. |
| 979 |
*/ |
| 980 |
private static function vertical_align( array $styles ): string { |
| 981 |
$align = isset( $styles['align-items'] ) ? strtolower( trim( $styles['align-items'] ) ) : ''; |
| 982 |
|
| 983 |
if ( 'flex-end' === $align || 'end' === $align ) { |
| 984 |
return 'bottom'; |
| 985 |
} |
| 986 |
if ( 'center' === $align ) { |
| 987 |
return 'middle'; |
| 988 |
} |
| 989 |
if ( 'baseline' === $align ) { |
| 990 |
return 'baseline'; |
| 991 |
} |
| 992 |
|
| 993 |
return 'top'; |
| 994 |
} |
| 995 |
|
| 996 |
/** |
| 997 |
* Format a float for CSS output, immune to LC_NUMERIC comma locales. |
| 998 |
* |
| 999 |
* @param float $value The value to format. |
| 1000 |
* |
| 1001 |
* @return string The formatted number. |
| 1002 |
*/ |
| 1003 |
private static function css_number( float $value ): string { |
| 1004 |
$formatted = rtrim( rtrim( number_format( $value, 3, '.', '' ), '0' ), '.' ); |
| 1005 |
|
| 1006 |
return '' === $formatted ? '0' : $formatted; |
| 1007 |
} |
| 1008 |
|
| 1009 |
/** |
| 1010 |
* Convert a CSS length to px (px and pt only — template inline styles). |
| 1011 |
* |
| 1012 |
* @param string $value The CSS length. |
| 1013 |
* |
| 1014 |
* @return float|null Pixels, or null when not convertible. |
| 1015 |
*/ |
| 1016 |
private static function length_to_px( string $value ): ?float { |
| 1017 |
$value = strtolower( trim( $value ) ); |
| 1018 |
|
| 1019 |
if ( preg_match( '/^(-?[0-9.]+)px$/', $value, $m ) ) { |
| 1020 |
return (float) $m[1]; |
| 1021 |
} |
| 1022 |
if ( preg_match( '/^(-?[0-9.]+)pt$/', $value, $m ) ) { |
| 1023 |
return (float) $m[1] / self::PT_PER_PX; |
| 1024 |
} |
| 1025 |
if ( '0' === $value ) { |
| 1026 |
return 0.0; |
| 1027 |
} |
| 1028 |
|
| 1029 |
return null; |
| 1030 |
} |
| 1031 |
|
| 1032 |
/** |
| 1033 |
* Resolve the root element's padding to [top, right, bottom, left] px. |
| 1034 |
* |
| 1035 |
* @param array $styles Parsed root styles. |
| 1036 |
* |
| 1037 |
* @return float[]|null Padding box, or null when absent/unparseable. |
| 1038 |
*/ |
| 1039 |
private static function resolve_padding_px( array $styles ): ?array { |
| 1040 |
$padding = array( 0.0, 0.0, 0.0, 0.0 ); |
| 1041 |
$found = false; |
| 1042 |
|
| 1043 |
if ( isset( $styles['padding'] ) ) { |
| 1044 |
$parts = preg_split( '/\s+/', trim( $styles['padding'] ) ); |
| 1045 |
$px = array(); |
| 1046 |
foreach ( $parts as $part ) { |
| 1047 |
$len = self::length_to_px( $part ); |
| 1048 |
if ( null === $len ) { |
| 1049 |
return null; // Unsupported unit — leave the template alone. |
| 1050 |
} |
| 1051 |
$px[] = $len; |
| 1052 |
} |
| 1053 |
|
| 1054 |
switch ( \count( $px ) ) { |
| 1055 |
case 1: |
| 1056 |
$padding = array( $px[0], $px[0], $px[0], $px[0] ); |
| 1057 |
break; |
| 1058 |
case 2: |
| 1059 |
$padding = array( $px[0], $px[1], $px[0], $px[1] ); |
| 1060 |
break; |
| 1061 |
case 3: |
| 1062 |
$padding = array( $px[0], $px[1], $px[2], $px[1] ); |
| 1063 |
break; |
| 1064 |
case 4: |
| 1065 |
$padding = array( $px[0], $px[1], $px[2], $px[3] ); |
| 1066 |
break; |
| 1067 |
default: |
| 1068 |
return null; |
| 1069 |
} |
| 1070 |
$found = true; |
| 1071 |
} |
| 1072 |
|
| 1073 |
$sides = array( |
| 1074 |
'padding-top' => 0, |
| 1075 |
'padding-right' => 1, |
| 1076 |
'padding-bottom' => 2, |
| 1077 |
'padding-left' => 3, |
| 1078 |
); |
| 1079 |
foreach ( $sides as $property => $index ) { |
| 1080 |
if ( ! isset( $styles[ $property ] ) ) { |
| 1081 |
continue; |
| 1082 |
} |
| 1083 |
$len = self::length_to_px( $styles[ $property ] ); |
| 1084 |
if ( null === $len ) { |
| 1085 |
return null; |
| 1086 |
} |
| 1087 |
$padding[ $index ] = $len; |
| 1088 |
$found = true; |
| 1089 |
} |
| 1090 |
|
| 1091 |
return $found ? $padding : null; |
| 1092 |
} |
| 1093 |
|
| 1094 |
/** |
| 1095 |
* Element children of a node (skipping text/comment nodes). |
| 1096 |
* |
| 1097 |
* @param DOMElement $element The parent element. |
| 1098 |
* |
| 1099 |
* @return DOMElement[] |
| 1100 |
*/ |
| 1101 |
private static function element_children( DOMElement $element ): array { |
| 1102 |
$children = array(); |
| 1103 |
foreach ( $element->childNodes as $child ) { |
| 1104 |
if ( $child instanceof DOMElement ) { |
| 1105 |
$children[] = $child; |
| 1106 |
} |
| 1107 |
} |
| 1108 |
|
| 1109 |
return $children; |
| 1110 |
} |
| 1111 |
|
| 1112 |
/** |
| 1113 |
* Remove container-level layout properties before reuse on a table/block. |
| 1114 |
* |
| 1115 |
* @param array $styles Parsed styles, modified in place. |
| 1116 |
*/ |
| 1117 |
private static function strip_layout_styles( array &$styles ): void { |
| 1118 |
unset( |
| 1119 |
$styles['display'], |
| 1120 |
$styles['flex-direction'], |
| 1121 |
$styles['flex-wrap'], |
| 1122 |
$styles['justify-content'], |
| 1123 |
$styles['align-items'], |
| 1124 |
$styles['align-content'], |
| 1125 |
$styles['gap'], |
| 1126 |
$styles['row-gap'], |
| 1127 |
$styles['column-gap'], |
| 1128 |
$styles['grid-template-columns'], |
| 1129 |
$styles['grid-template-rows'], |
| 1130 |
$styles['grid-auto-flow'] |
| 1131 |
); |
| 1132 |
} |
| 1133 |
|
| 1134 |
/** |
| 1135 |
* Remove child-level flex sizing properties. |
| 1136 |
* |
| 1137 |
* @param array $styles Parsed styles, modified in place. |
| 1138 |
*/ |
| 1139 |
private static function strip_flex_child_styles( array &$styles ): void { |
| 1140 |
unset( |
| 1141 |
$styles['flex'], |
| 1142 |
$styles['flex-grow'], |
| 1143 |
$styles['flex-shrink'], |
| 1144 |
$styles['flex-basis'], |
| 1145 |
$styles['align-self'], |
| 1146 |
$styles['justify-self'], |
| 1147 |
$styles['min-width'] |
| 1148 |
); |
| 1149 |
} |
| 1150 |
|
| 1151 |
/** |
| 1152 |
* Parse an inline style attribute into an ordered property map. |
| 1153 |
* |
| 1154 |
* @param string $style The style attribute value. |
| 1155 |
* |
| 1156 |
* @return array<string,string> |
| 1157 |
*/ |
| 1158 |
private static function parse_styles( string $style ): array { |
| 1159 |
$styles = array(); |
| 1160 |
$declarations = array(); |
| 1161 |
$buffer = ''; |
| 1162 |
$depth = 0; |
| 1163 |
$quote = ''; |
| 1164 |
$length = \strlen( $style ); |
| 1165 |
|
| 1166 |
for ( $i = 0; $i < $length; $i++ ) { |
| 1167 |
$char = $style[ $i ]; |
| 1168 |
|
| 1169 |
if ( '' !== $quote ) { |
| 1170 |
$buffer .= $char; |
| 1171 |
if ( $char === $quote && ( 0 === $i || '\\' !== $style[ $i - 1 ] ) ) { |
| 1172 |
$quote = ''; |
| 1173 |
} |
| 1174 |
continue; |
| 1175 |
} |
| 1176 |
|
| 1177 |
if ( '"' === $char || "'" === $char ) { |
| 1178 |
$quote = $char; |
| 1179 |
$buffer .= $char; |
| 1180 |
continue; |
| 1181 |
} |
| 1182 |
|
| 1183 |
if ( '(' === $char ) { |
| 1184 |
$depth++; |
| 1185 |
} elseif ( ')' === $char && $depth > 0 ) { |
| 1186 |
$depth--; |
| 1187 |
} |
| 1188 |
|
| 1189 |
if ( ';' === $char && 0 === $depth ) { |
| 1190 |
$declarations[] = $buffer; |
| 1191 |
$buffer = ''; |
| 1192 |
continue; |
| 1193 |
} |
| 1194 |
|
| 1195 |
$buffer .= $char; |
| 1196 |
} |
| 1197 |
|
| 1198 |
$declarations[] = $buffer; |
| 1199 |
|
| 1200 |
foreach ( $declarations as $declaration ) { |
| 1201 |
$colon = strpos( $declaration, ':' ); |
| 1202 |
if ( false === $colon ) { |
| 1203 |
continue; |
| 1204 |
} |
| 1205 |
|
| 1206 |
$property = strtolower( trim( substr( $declaration, 0, $colon ) ) ); |
| 1207 |
$value = trim( substr( $declaration, $colon + 1 ) ); |
| 1208 |
if ( '' !== $property && '' !== $value ) { |
| 1209 |
$styles[ $property ] = $value; |
| 1210 |
} |
| 1211 |
} |
| 1212 |
|
| 1213 |
return $styles; |
| 1214 |
} |
| 1215 |
|
| 1216 |
/** |
| 1217 |
* Serialize a property map back to a style string. |
| 1218 |
* |
| 1219 |
* @param array $styles The property map. |
| 1220 |
* |
| 1221 |
* @return string |
| 1222 |
*/ |
| 1223 |
private static function build_styles( array $styles ): string { |
| 1224 |
$declarations = array(); |
| 1225 |
foreach ( $styles as $property => $value ) { |
| 1226 |
$declarations[] = $property . ': ' . $value; |
| 1227 |
} |
| 1228 |
|
| 1229 |
return implode( '; ', $declarations ); |
| 1230 |
} |
| 1231 |
|
| 1232 |
/** |
| 1233 |
* Write a property map to an element's style attribute. |
| 1234 |
* |
| 1235 |
* @param DOMElement $element The element. |
| 1236 |
* @param array $styles The property map. |
| 1237 |
*/ |
| 1238 |
private static function set_styles( DOMElement $element, array $styles ): void { |
| 1239 |
$style_text = self::build_styles( $styles ); |
| 1240 |
if ( '' === $style_text ) { |
| 1241 |
$element->removeAttribute( 'style' ); |
| 1242 |
} else { |
| 1243 |
$element->setAttribute( 'style', $style_text ); |
| 1244 |
} |
| 1245 |
} |
| 1246 |
|
| 1247 |
/** |
| 1248 |
* Append one declaration to an element's existing style attribute. |
| 1249 |
* |
| 1250 |
* @param DOMElement $element The element. |
| 1251 |
* @param string $property The CSS property. |
| 1252 |
* @param string $value The CSS value. |
| 1253 |
*/ |
| 1254 |
private static function append_style( DOMElement $element, string $property, string $value ): void { |
| 1255 |
$styles = self::parse_styles( $element->getAttribute( 'style' ) ); |
| 1256 |
$styles[ $property ] = $value; |
| 1257 |
self::set_styles( $element, $styles ); |
| 1258 |
} |
| 1259 |
} |
| 1260 |
|
