| 1 |
<?php |
| 2 |
/** |
| 3 |
* StarPRNT Thermal Emitter Class. |
| 4 |
* |
| 5 |
* Emits native StarPRNT command bytes from a thermal AST (produced by |
| 6 |
* Thermal_Markup_Parser) for Star CloudPRNT printers served as |
| 7 |
* `application/vnd.star.starprnt`. StarPRNT-native printers (the whole TSP100 |
| 8 |
* line, mC-Print in StarPRNT mode) cannot decode ESC/POS, so Star jobs must be |
| 9 |
* emitted in this command set. |
| 10 |
* |
| 11 |
* The command bytes follow Star's own MIT-licensed reference implementation |
| 12 |
* (star-cloudprnt-for-woocommerce, `printer_star_prnt.inc.php`) and were |
| 13 |
* cross-checked against the StarPRNT language module of |
| 14 |
* NielsLeenheer/ReceiptPrinterEncoder. Text layout (alignment padding, rows, |
| 15 |
* rules, width handling) mirrors Escpos_Thermal_Emitter so the printed layout |
| 16 |
* matches across providers. |
| 17 |
* |
| 18 |
* Deliberate deviations / notes: |
| 19 |
* - No initialize command is emitted. CloudPRNT jobs must not reset the |
| 20 |
* device mid-session; jobs open with the UTF-8 encoding select sequence |
| 21 |
* instead so non-ASCII text decodes correctly. |
| 22 |
* - Cut uses the feed-then-cut variants (ESC d 2/3) like Star's reference |
| 23 |
* plugin, so the last lines clear the cutter before cutting. |
| 24 |
* - Star printers adjust the line feed pitch for magnified text themselves, |
| 25 |
* so there is no scaled line-spacing handling. |
| 26 |
* - Images (`<image>`) are thresholded to 1-bit dots by Thermal_Bitmap and sent |
| 27 |
* as `ESC X` column graphics, Star having no row-major raster command to |
| 28 |
* match ESC/POS `GS v 0`. |
| 29 |
* |
| 30 |
* @author Paul Kilmurray <[email protected]> |
| 31 |
* |
| 32 |
* @see http://wcpos.com |
| 33 |
* @package WCPOS\WooCommercePOS |
| 34 |
*/ |
| 35 |
|
| 36 |
namespace WCPOS\WooCommercePOS\Templates\Thermal; |
| 37 |
|
| 38 |
use WCPOS\WooCommercePOS\Templates\Barcode_Symbology; |
| 39 |
|
| 40 |
/** |
| 41 |
* Starprnt_Thermal_Emitter class. |
| 42 |
*/ |
| 43 |
class Starprnt_Thermal_Emitter { |
| 44 |
|
| 45 |
use Thermal_Emitter_Support; |
| 46 |
|
| 47 |
/** |
| 48 |
* Largest StarPRNT text multiplier: ESC i n1/n2 accept 0-5 (1-6x). |
| 49 |
*/ |
| 50 |
private const MAX_MAGNIFICATION = 6; |
| 51 |
|
| 52 |
/** |
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* Render options. |
| 54 |
* |
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* @var array |
| 56 |
*/ |
| 57 |
private $options = array(); |
| 58 |
|
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/** |
| 60 |
* Accumulated output bytes. |
| 61 |
* |
| 62 |
* @var string |
| 63 |
*/ |
| 64 |
private $buffer = ''; |
| 65 |
|
| 66 |
/** |
| 67 |
* Per-job text metrics and applied size stack. |
| 68 |
* |
| 69 |
* @var Thermal_Text_Layout |
| 70 |
*/ |
| 71 |
private $layout; |
| 72 |
|
| 73 |
/** |
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* The current alignment mode (left|center|right). |
| 75 |
* |
| 76 |
* @var string |
| 77 |
*/ |
| 78 |
private $align = 'left'; |
| 79 |
|
| 80 |
/** |
| 81 |
* Whether bold is currently active. |
| 82 |
* |
| 83 |
* @var bool |
| 84 |
*/ |
| 85 |
private $bold = false; |
| 86 |
|
| 87 |
/** |
| 88 |
* Whether underline is currently active. |
| 89 |
* |
| 90 |
* @var bool |
| 91 |
*/ |
| 92 |
private $underline = false; |
| 93 |
|
| 94 |
/** |
| 95 |
* Whether invert is currently active. |
| 96 |
* |
| 97 |
* @var bool |
| 98 |
*/ |
| 99 |
private $invert = false; |
| 100 |
|
| 101 |
/** |
| 102 |
* Whether unterminated text is sitting in the printer's line buffer. |
| 103 |
* |
| 104 |
* Star's graphics and barcode commands, like their ESC/POS counterparts, are |
| 105 |
* line-oriented: `ESC X` starts a raster band and `ESC b` a barcode, and both |
| 106 |
* expect to begin at the start of a line. Bare text in a template |
| 107 |
* (`<receipt>Total<image/></receipt>`) parses to a `raw-text` node, which |
| 108 |
* prints without a terminator, so the emitter tracks whether a line is open. |
| 109 |
* |
| 110 |
* @var bool |
| 111 |
*/ |
| 112 |
private $line_open = false; |
| 113 |
|
| 114 |
/** |
| 115 |
* Constructor. |
| 116 |
* |
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* @param array $options Render options. |
| 118 |
*/ |
| 119 |
public function __construct( array $options = array() ) { |
| 120 |
$this->options = $options; |
| 121 |
} |
| 122 |
|
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/** |
| 124 |
* Emit native StarPRNT bytes from a thermal AST. |
| 125 |
* |
| 126 |
* @param array $ast The thermal AST root (a receipt node). |
| 127 |
* |
| 128 |
* @return string The raw StarPRNT bytes. |
| 129 |
*/ |
| 130 |
public function emit( array $ast ): string { |
| 131 |
$this->buffer = ''; |
| 132 |
$this->align = 'left'; |
| 133 |
$this->bold = false; |
| 134 |
$this->underline = false; |
| 135 |
$this->invert = false; |
| 136 |
$this->line_open = false; |
| 137 |
|
| 138 |
$this->layout = new Thermal_Text_Layout( isset( $ast['paper_width'] ) ? (int) $ast['paper_width'] : 48, self::MAX_MAGNIFICATION ); |
| 139 |
|
| 140 |
// ESC GS ) U — select UTF-8 encoding, then the companion font/width |
| 141 |
// setting, per Star's reference implementation. No initialize command: |
| 142 |
// CloudPRNT jobs must not reset the printer. |
| 143 |
$this->raw( array( 0x1b, 0x1d, 0x29, 0x55, 0x02, 0x00, 0x30, 0x01 ) ); |
| 144 |
$this->raw( array( 0x1b, 0x1d, 0x29, 0x55, 0x02, 0x00, 0x40, 0x00 ) ); |
| 145 |
|
| 146 |
$children = isset( $ast['children'] ) && \is_array( $ast['children'] ) ? $ast['children'] : array(); |
| 147 |
$this->walk_nodes( $this->nodes_with_auto_drawer( $children ) ); |
| 148 |
|
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return $this->buffer; |
| 150 |
} |
| 151 |
|
| 152 |
/** |
| 153 |
* Emit a StarPRNT drawer pulse. |
| 154 |
* |
| 155 |
* ESC BEL sets the pulse width (on/off in 10ms units), then the trigger |
| 156 |
* byte fires the peripheral: 0x07 for device 1 (pin2), 0x1A for device 2 |
| 157 |
* (pin5). |
| 158 |
* |
| 159 |
* @param string $connector Drawer connector. |
| 160 |
*/ |
| 161 |
private function emit_drawer_pulse( string $connector ): void { |
| 162 |
$connector = \WCPOS\WooCommercePOS\Services\Print_Job_Service::normalize_drawer_connector( $connector ); |
| 163 |
$trigger = 'pin5' === $connector ? 0x1a : 0x07; |
| 164 |
|
| 165 |
$this->raw( array( 0x1b, 0x07, 0x0a, 0x0a, $trigger ) ); |
| 166 |
} |
| 167 |
|
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/** |
| 169 |
* Walk a single AST node. |
| 170 |
* |
| 171 |
* @param array $node The AST node. |
| 172 |
* |
| 173 |
* @return void |
| 174 |
*/ |
| 175 |
private function walk_node( array $node ): void { |
| 176 |
$type = isset( $node['type'] ) ? $node['type'] : ''; |
| 177 |
|
| 178 |
switch ( $type ) { |
| 179 |
case 'raw-text': |
| 180 |
$this->emit_inline_text( isset( $node['value'] ) ? (string) $node['value'] : '' ); |
| 181 |
break; |
| 182 |
case 'text': |
| 183 |
$this->emit_text_line( isset( $node['children'] ) ? $node['children'] : array() ); |
| 184 |
break; |
| 185 |
case 'bold': |
| 186 |
$this->emit_bold( $node ); |
| 187 |
break; |
| 188 |
case 'underline': |
| 189 |
$this->emit_underline( $node ); |
| 190 |
break; |
| 191 |
case 'invert': |
| 192 |
$this->emit_invert( $node ); |
| 193 |
break; |
| 194 |
case 'size': |
| 195 |
$this->emit_size( $node ); |
| 196 |
break; |
| 197 |
case 'align': |
| 198 |
$this->emit_align( $node ); |
| 199 |
break; |
| 200 |
case 'row': |
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$this->emit_row( $node ); |
| 202 |
break; |
| 203 |
case 'line': |
| 204 |
$this->emit_line( $node ); |
| 205 |
break; |
| 206 |
case 'barcode': |
| 207 |
$this->emit_barcode( $node ); |
| 208 |
break; |
| 209 |
case 'qrcode': |
| 210 |
$this->emit_qrcode( $node ); |
| 211 |
break; |
| 212 |
case 'image': |
| 213 |
$this->emit_image( $node ); |
| 214 |
break; |
| 215 |
case 'cut': |
| 216 |
$this->emit_cut( $node ); |
| 217 |
break; |
| 218 |
case 'feed': |
| 219 |
$this->emit_feed( $node ); |
| 220 |
break; |
| 221 |
case 'drawer': |
| 222 |
$this->emit_drawer_pulse( isset( $node['connector'] ) ? (string) $node['connector'] : 'pin2' ); |
| 223 |
break; |
| 224 |
case 'receipt': |
| 225 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 226 |
break; |
| 227 |
} |
| 228 |
} |
| 229 |
|
| 230 |
/** |
| 231 |
* Emit inline (styled) text bytes for the current line. |
| 232 |
* |
| 233 |
* @param string $value The raw text value. |
| 234 |
* |
| 235 |
* @return void |
| 236 |
*/ |
| 237 |
private function emit_inline_text( string $value ): void { |
| 238 |
$text = Thermal_Text_Layout::normalize_text( $value ); |
| 239 |
if ( '' === $text ) { |
| 240 |
return; |
| 241 |
} |
| 242 |
|
| 243 |
$this->raw_string( $text ); |
| 244 |
|
| 245 |
// The parser preserves a text node verbatim, newlines included, so this |
| 246 |
// may have ended the line itself — `<receipt>Total\n<image/></receipt>` |
| 247 |
// leaves the printer at column zero. Reading the state off the bytes just |
| 248 |
// written keeps close_open_line() from spending a second line feed there. |
| 249 |
$this->line_open = "\n" !== substr( $text, -1 ); |
| 250 |
} |
| 251 |
|
| 252 |
/** |
| 253 |
* Close an open line so a line-oriented command can start cleanly. |
| 254 |
* |
| 255 |
* @return void |
| 256 |
*/ |
| 257 |
private function close_open_line(): void { |
| 258 |
if ( $this->line_open ) { |
| 259 |
$this->newline(); |
| 260 |
} |
| 261 |
} |
| 262 |
|
| 263 |
/** |
| 264 |
* Emit a single printed text line (the children, padding, then a newline). |
| 265 |
* |
| 266 |
* @param array $children The child nodes of the text node. |
| 267 |
* |
| 268 |
* @return void |
| 269 |
*/ |
| 270 |
private function emit_text_line( array $children ): void { |
| 271 |
if ( 'left' !== $this->align ) { |
| 272 |
$plain = Thermal_Text_Layout::normalize_text( Thermal_Text_Layout::extract_text( $children ) ); |
| 273 |
$pad = $this->layout->measure_padding( $this->align, $plain ); |
| 274 |
if ( $pad > 0 ) { |
| 275 |
$this->raw_string( str_repeat( ' ', $pad ) ); |
| 276 |
} |
| 277 |
} |
| 278 |
$this->walk_nodes( $children ); |
| 279 |
$this->newline(); |
| 280 |
} |
| 281 |
|
| 282 |
/** |
| 283 |
* Emit a bold-wrapped block using ESC E / ESC F. |
| 284 |
* |
| 285 |
* @param array $node The bold AST node. |
| 286 |
* |
| 287 |
* @return void |
| 288 |
*/ |
| 289 |
private function emit_bold( array $node ): void { |
| 290 |
$previous = $this->bold; |
| 291 |
$this->raw( array( 0x1b, 0x45 ) ); |
| 292 |
$this->bold = true; |
| 293 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 294 |
$this->raw( $previous ? array( 0x1b, 0x45 ) : array( 0x1b, 0x46 ) ); |
| 295 |
$this->bold = $previous; |
| 296 |
} |
| 297 |
|
| 298 |
/** |
| 299 |
* Emit an underline-wrapped block using ESC - n. |
| 300 |
* |
| 301 |
* @param array $node The underline AST node. |
| 302 |
* |
| 303 |
* @return void |
| 304 |
*/ |
| 305 |
private function emit_underline( array $node ): void { |
| 306 |
$previous = $this->underline; |
| 307 |
$this->raw( array( 0x1b, 0x2d, 0x01 ) ); |
| 308 |
$this->underline = true; |
| 309 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 310 |
$this->raw( array( 0x1b, 0x2d, $previous ? 0x01 : 0x00 ) ); |
| 311 |
$this->underline = $previous; |
| 312 |
} |
| 313 |
|
| 314 |
/** |
| 315 |
* Emit an invert-wrapped block using ESC 4 / ESC 5. |
| 316 |
* |
| 317 |
* @param array $node The invert AST node. |
| 318 |
* |
| 319 |
* @return void |
| 320 |
*/ |
| 321 |
private function emit_invert( array $node ): void { |
| 322 |
$previous = $this->invert; |
| 323 |
$this->raw( array( 0x1b, 0x34 ) ); |
| 324 |
$this->invert = true; |
| 325 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 326 |
$this->raw( $previous ? array( 0x1b, 0x34 ) : array( 0x1b, 0x35 ) ); |
| 327 |
$this->invert = $previous; |
| 328 |
} |
| 329 |
|
| 330 |
/** |
| 331 |
* Emit a size-wrapped block using ESC i (height, width). |
| 332 |
* |
| 333 |
* @param array $node The size AST node. |
| 334 |
* |
| 335 |
* @return void |
| 336 |
*/ |
| 337 |
private function emit_size( array $node ): void { |
| 338 |
$this->layout->enter_size( |
| 339 |
is_numeric( $node['width'] ?? null ) ? (int) $node['width'] : 1, |
| 340 |
is_numeric( $node['height'] ?? null ) ? (int) $node['height'] : 1 |
| 341 |
); |
| 342 |
$this->emit_applied_size(); |
| 343 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 344 |
$this->layout->leave_size(); |
| 345 |
$this->emit_applied_size(); |
| 346 |
} |
| 347 |
|
| 348 |
/** |
| 349 |
* Encode the applied scale as ESC i (height, width), zero-based. |
| 350 |
* |
| 351 |
* @return void |
| 352 |
*/ |
| 353 |
private function emit_applied_size(): void { |
| 354 |
$scale = $this->layout->applied_scale(); |
| 355 |
$this->raw( array( 0x1b, 0x69, $scale['height'] - 1, $scale['width'] - 1 ) ); |
| 356 |
} |
| 357 |
|
| 358 |
/** |
| 359 |
* Emit an alignment-wrapped block using ESC GS a. |
| 360 |
* |
| 361 |
* @param array $node The align AST node. |
| 362 |
* |
| 363 |
* @return void |
| 364 |
*/ |
| 365 |
private function emit_align( array $node ): void { |
| 366 |
$previous = $this->align; |
| 367 |
$mode = isset( $node['mode'] ) ? $node['mode'] : 'left'; |
| 368 |
$this->raw( array( 0x1b, 0x1d, 0x61, $this->align_byte( $mode ) ) ); |
| 369 |
$this->align = $mode; |
| 370 |
|
| 371 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 372 |
|
| 373 |
$this->raw( array( 0x1b, 0x1d, 0x61, $this->align_byte( $previous ) ) ); |
| 374 |
$this->align = $previous; |
| 375 |
} |
| 376 |
|
| 377 |
/** |
| 378 |
* Map an alignment mode to its ESC GS a parameter byte. |
| 379 |
* |
| 380 |
* @param string $mode The alignment mode. |
| 381 |
* |
| 382 |
* @return int The ESC GS a parameter byte. |
| 383 |
*/ |
| 384 |
private function align_byte( string $mode ): int { |
| 385 |
if ( 'center' === $mode ) { |
| 386 |
return 0x01; |
| 387 |
} |
| 388 |
if ( 'right' === $mode ) { |
| 389 |
return 0x02; |
| 390 |
} |
| 391 |
|
| 392 |
return 0x00; |
| 393 |
} |
| 394 |
|
| 395 |
/** |
| 396 |
* Emit a row as one physical line followed by a newline. |
| 397 |
* |
| 398 |
* @param array $node The row AST node. |
| 399 |
* |
| 400 |
* @return void |
| 401 |
*/ |
| 402 |
private function emit_row( array $node ): void { |
| 403 |
$cols = isset( $node['children'] ) && \is_array( $node['children'] ) ? $node['children'] : array(); |
| 404 |
$widths = $this->layout->measure_row_widths( $cols ); |
| 405 |
|
| 406 |
$line = ''; |
| 407 |
foreach ( $cols as $index => $col ) { |
| 408 |
$width = isset( $widths[ $index ] ) ? $widths[ $index ] : 1; |
| 409 |
$text = Thermal_Text_Layout::normalize_text( Thermal_Text_Layout::extract_text( isset( $col['children'] ) ? $col['children'] : array() ) ); |
| 410 |
$text = Thermal_Text_Layout::truncate_display( $text, $width ); |
| 411 |
$pad = max( 0, $width - Thermal_Text_Layout::display_width( $text ) ); |
| 412 |
$align = isset( $col['align'] ) ? $col['align'] : 'left'; |
| 413 |
if ( 'right' === $align ) { |
| 414 |
$line .= str_repeat( ' ', $pad ) . $text; |
| 415 |
} else { |
| 416 |
$line .= $text . str_repeat( ' ', $pad ); |
| 417 |
} |
| 418 |
} |
| 419 |
|
| 420 |
$this->raw_string( $line ); |
| 421 |
$this->newline(); |
| 422 |
} |
| 423 |
|
| 424 |
/** |
| 425 |
* Emit a horizontal rule line. |
| 426 |
* |
| 427 |
* @param array $node The line AST node. |
| 428 |
* |
| 429 |
* @return void |
| 430 |
*/ |
| 431 |
private function emit_line( array $node ): void { |
| 432 |
$style = isset( $node['style'] ) ? $node['style'] : 'single'; |
| 433 |
|
| 434 |
if ( 'dotted' === $style ) { |
| 435 |
$pattern = '. '; |
| 436 |
$repeat = (int) ceil( $this->layout->columns() / \strlen( $pattern ) ); |
| 437 |
$text = substr( str_repeat( $pattern, $repeat ), 0, $this->layout->columns() ); |
| 438 |
} elseif ( 'double' === $style ) { |
| 439 |
$text = str_repeat( '=', $this->layout->columns() ); |
| 440 |
} else { |
| 441 |
// single and dashed both render as '-' across the width. |
| 442 |
$text = str_repeat( '-', $this->layout->columns() ); |
| 443 |
} |
| 444 |
|
| 445 |
$this->raw_string( $text ); |
| 446 |
$this->newline(); |
| 447 |
} |
| 448 |
|
| 449 |
/** |
| 450 |
* Emit a 1D barcode using ESC b, terminated by RS. |
| 451 |
* |
| 452 |
* `ESC b n1 n2 n3 n4 <data> RS` — StarPRNT Command Specifications Ver 1.3E, |
| 453 |
* barcode section. n1 is the symbology (owned by Barcode_Symbology; note |
| 454 |
* Star numbers the UPC pair the opposite way round to ESC/POS), n2 = 2 for |
| 455 |
* "HRI under the bars, line feed after printing" — matching the preview, the |
| 456 |
* PDF and the raster lane, and matching Star's own reference plugin, which |
| 457 |
* sets n2 = 2 whenever HRI is asked for — n3 = 2 for the medium module width |
| 458 |
* (valid for every symbology we emit), and n4 is the height in dots, clamped |
| 459 |
* to the printable 8-255 range. |
| 460 |
* |
| 461 |
* A StarPRNT printer handed data its symbology cannot encode discards the |
| 462 |
* command up to the RS terminator without reporting an error, so an |
| 463 |
* unencodable value is printed as text instead. |
| 464 |
* |
| 465 |
* @param array $node The barcode AST node. |
| 466 |
* |
| 467 |
* @return void |
| 468 |
*/ |
| 469 |
private function emit_barcode( array $node ): void { |
| 470 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 471 |
if ( '' === trim( $value ) ) { |
| 472 |
return; |
| 473 |
} |
| 474 |
|
| 475 |
// Before the validation branch, not after: ESC b starts a barcode block, |
| 476 |
// and the rescue below centres its text against the full paper width, so |
| 477 |
// both outcomes need the line closed first. |
| 478 |
$this->close_open_line(); |
| 479 |
|
| 480 |
$type = isset( $node['barcode_type'] ) ? (string) $node['barcode_type'] : 'code128'; |
| 481 |
$height = isset( $node['height'] ) ? (int) $node['height'] : 40; |
| 482 |
// The 8-dot floor is Star's, not the markup's: Thermal_Bounds allows a |
| 483 |
// 1-dot barcode and ESC/POS prints one, but ESC b rejects anything |
| 484 |
// shorter than 8. A device-specific bound, so it stays here. |
| 485 |
$height = max( 8, min( Thermal_Bounds::BARCODE_HEIGHT_MAX, $height ) ); |
| 486 |
|
| 487 |
if ( ! Barcode_Symbology::is_valid_value( $type, $value, Barcode_Symbology::LANE_STARPRNT ) ) { |
| 488 |
$this->raw_string( $this->centered_text( $value, $this->layout->columns() ) ); |
| 489 |
$this->newline(); |
| 490 |
|
| 491 |
return; |
| 492 |
} |
| 493 |
|
| 494 |
$this->raw( array( 0x1b, 0x62, Barcode_Symbology::starprnt_id( $type ), 0x02, 0x02, $height ) ); |
| 495 |
$this->raw_string( Barcode_Symbology::starprnt_payload( $type, $value ) ); |
| 496 |
$this->raw( array( 0x1e ) ); |
| 497 |
} |
| 498 |
|
| 499 |
/** |
| 500 |
* Print a template `<image>` (in practice, the store logo). |
| 501 |
* |
| 502 |
* `ESC X nL nH d1..dk` — Star's column graphics, taken from the StarPRNT |
| 503 |
* language module of NielsLeenheer/ReceiptPrinterEncoder, the same source the |
| 504 |
* rest of this emitter was cross-checked against. Star has no row-major |
| 505 |
* raster command to match ESC/POS `GS v 0`: the image goes out in 24-dot |
| 506 |
* bands, three bytes per column, top bit first, so the dots are transposed |
| 507 |
* out of the bitmap here. Line spacing is set to 24 dots (`ESC 0`) for the |
| 508 |
* duration so consecutive bands butt together instead of leaving white |
| 509 |
* stripes, and restored to the default (`ESC z 1`) afterwards. |
| 510 |
* |
| 511 |
* The image is centred unconditionally, ignoring any enclosing `<align>`. |
| 512 |
* That is the contract the other three renderers already keep — the preview |
| 513 |
* (thermal-renderer.ts), the PDF (Html_Thermal_Emitter::render_image()) and |
| 514 |
* the raster lane (Raster_Thermal_Emitter::draw_image()) all hard-centre an |
| 515 |
* `<image>` — and inheriting the wrapper's alignment instead would left-align |
| 516 |
* the bare `<image>` the template editor inserts, which all three show |
| 517 |
* centred. |
| 518 |
* |
| 519 |
* A src that resolves to nothing (a remote URL, a missing file) prints |
| 520 |
* nothing, and in particular does not disturb the line spacing. |
| 521 |
* |
| 522 |
* @param array $node The image AST node. |
| 523 |
* |
| 524 |
* @return void |
| 525 |
*/ |
| 526 |
private function emit_image( array $node ): void { |
| 527 |
$bitmap = Thermal_Bitmap::from_node( $node, Thermal_Bounds::paper_dots( $this->layout->columns() ) ); |
| 528 |
if ( null === $bitmap ) { |
| 529 |
return; |
| 530 |
} |
| 531 |
|
| 532 |
// ESC X starts a raster band; close any open text line first. |
| 533 |
$this->close_open_line(); |
| 534 |
|
| 535 |
$width = $bitmap->width(); |
| 536 |
$height = $bitmap->height(); |
| 537 |
|
| 538 |
$this->raw( array( 0x1b, 0x1d, 0x61, $this->align_byte( 'center' ) ) ); |
| 539 |
$this->raw( array( 0x1b, 0x30 ) ); // ESC 0 — 24-dot line spacing. |
| 540 |
|
| 541 |
for ( $top = 0; $top < $height; $top += 24 ) { |
| 542 |
$this->raw( array( 0x1b, 0x58, $width & 0xff, ( $width >> 8 ) & 0xff ) ); |
| 543 |
|
| 544 |
$band = ''; |
| 545 |
for ( $x = 0; $x < $width; $x++ ) { |
| 546 |
for ( $byte_index = 0; $byte_index < 3; $byte_index++ ) { |
| 547 |
$byte = 0; |
| 548 |
for ( $bit = 0; $bit < 8; $bit++ ) { |
| 549 |
// pixel() reads out of range as blank, which is what makes |
| 550 |
// the last band safe when the height is not a multiple of 24. |
| 551 |
$byte |= $bitmap->pixel( $x, $top + ( $byte_index * 8 ) + $bit ) << ( 7 - $bit ); |
| 552 |
} |
| 553 |
$band .= \chr( $byte ); |
| 554 |
} |
| 555 |
} |
| 556 |
|
| 557 |
$this->raw_string( $band ); |
| 558 |
$this->raw( array( 0x0a, 0x0d ) ); |
| 559 |
} |
| 560 |
|
| 561 |
$this->raw( array( 0x1b, 0x7a, 0x01 ) ); // ESC z 1 — default line spacing. |
| 562 |
$this->raw( array( 0x1b, 0x1d, 0x61, $this->align_byte( $this->align ) ) ); |
| 563 |
} |
| 564 |
|
| 565 |
/** |
| 566 |
* Emit a model-2 QR code using the ESC GS y command family. |
| 567 |
* |
| 568 |
* @param array $node The qrcode AST node. |
| 569 |
* |
| 570 |
* @return void |
| 571 |
*/ |
| 572 |
private function emit_qrcode( array $node ): void { |
| 573 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 574 |
$size = isset( $node['size'] ) ? (int) $node['size'] : 4; |
| 575 |
// Star's QR module size tops out at 8, half the ESC/POS ceiling in |
| 576 |
// Thermal_Bounds::QRCODE_SIZE_MAX. Device-specific, so it stays here. |
| 577 |
$size = max( Thermal_Bounds::QRCODE_SIZE_MIN, min( 8, $size ) ); |
| 578 |
|
| 579 |
// ESC GS y prints a QR block; close any open text line first. |
| 580 |
$this->close_open_line(); |
| 581 |
|
| 582 |
// Select model 2. |
| 583 |
$this->raw( array( 0x1b, 0x1d, 0x79, 0x53, 0x30, 0x02 ) ); |
| 584 |
// Set error correction level (M). |
| 585 |
$this->raw( array( 0x1b, 0x1d, 0x79, 0x53, 0x31, 0x01 ) ); |
| 586 |
// Set cell size. |
| 587 |
$this->raw( array( 0x1b, 0x1d, 0x79, 0x53, 0x32, $size ) ); |
| 588 |
|
| 589 |
// Store data. |
| 590 |
$data = substr( $value, 0, 0xffff ); |
| 591 |
$p_l = \strlen( $data ) & 0xff; |
| 592 |
$p_h = ( \strlen( $data ) >> 8 ) & 0xff; |
| 593 |
$this->raw( array( 0x1b, 0x1d, 0x79, 0x44, 0x31, 0x00, $p_l, $p_h ) ); |
| 594 |
$this->raw_string( $data ); |
| 595 |
|
| 596 |
// Print the stored symbol. |
| 597 |
$this->raw( array( 0x1b, 0x1d, 0x79, 0x50 ) ); |
| 598 |
} |
| 599 |
|
| 600 |
/** |
| 601 |
* Emit a paper cut command (feed-then-cut variants). |
| 602 |
* |
| 603 |
* @param array $node The cut AST node. |
| 604 |
* |
| 605 |
* @return void |
| 606 |
*/ |
| 607 |
private function emit_cut( array $node ): void { |
| 608 |
$cut_type = isset( $node['cut_type'] ) ? $node['cut_type'] : 'partial'; |
| 609 |
$this->raw( array( 0x1b, 0x64, 'full' === $cut_type ? 0x02 : 0x03 ) ); |
| 610 |
} |
| 611 |
|
| 612 |
/** |
| 613 |
* Emit a paper feed of N lines. |
| 614 |
* |
| 615 |
* @param array $node The feed AST node. |
| 616 |
* |
| 617 |
* @return void |
| 618 |
*/ |
| 619 |
private function emit_feed( array $node ): void { |
| 620 |
$lines = Thermal_Bounds::clamp_int( |
| 621 |
isset( $node['lines'] ) ? $node['lines'] : null, |
| 622 |
Thermal_Bounds::FEED_LINES_MIN, |
| 623 |
Thermal_Bounds::FEED_LINES_MIN, |
| 624 |
Thermal_Bounds::FEED_LINES_MAX |
| 625 |
); |
| 626 |
for ( $index = 0; $index < $lines; $index++ ) { |
| 627 |
$this->raw( array( 0x0a ) ); |
| 628 |
} |
| 629 |
$this->line_open = false; |
| 630 |
} |
| 631 |
|
| 632 |
/** |
| 633 |
* Emit a single newline. |
| 634 |
* |
| 635 |
* @return void |
| 636 |
*/ |
| 637 |
private function newline(): void { |
| 638 |
$this->raw( array( 0x0a ) ); |
| 639 |
$this->line_open = false; |
| 640 |
} |
| 641 |
|
| 642 |
/** |
| 643 |
* Append a list of ordinal bytes to the output buffer. |
| 644 |
* |
| 645 |
* @param array $bytes The ordinal bytes. |
| 646 |
* |
| 647 |
* @return void |
| 648 |
*/ |
| 649 |
private function raw( array $bytes ): void { |
| 650 |
foreach ( $bytes as $byte ) { |
| 651 |
$this->buffer .= \chr( $byte & 0xff ); |
| 652 |
} |
| 653 |
} |
| 654 |
|
| 655 |
/** |
| 656 |
* Append a raw string to the output buffer. |
| 657 |
* |
| 658 |
* @param string $value The string to append. |
| 659 |
* |
| 660 |
* @return void |
| 661 |
*/ |
| 662 |
private function raw_string( string $value ): void { |
| 663 |
$this->buffer .= $value; |
| 664 |
} |
| 665 |
} |
| 666 |
|
