| 1 |
<?php |
| 2 |
/** |
| 3 |
* ESC/POS Thermal Emitter Class. |
| 4 |
* |
| 5 |
* Emits raw ESC/POS command bytes from a thermal AST (produced by |
| 6 |
* Thermal_Markup_Parser). This is the ONLY ESC/POS emitter in the project — |
| 7 |
* there is no JavaScript counterpart to keep in step with, so this class is the |
| 8 |
* reference for what a template actually prints. Parity with the npm escpos |
| 9 |
* encoder is defined as matching command sequences and visual text layout, NOT |
| 10 |
* byte-identity. |
| 11 |
* |
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* This is the template-driven counterpart to |
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* `WCPOS\WooCommercePOS\Templates\Adapters\Escpos_Output_Adapter`, which emits a |
| 14 |
* fixed, non-template layout from canonical receipt data. |
| 15 |
* |
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* Deliberate deviations from the npm escpos encoder: |
| 17 |
* - Double rules (`<line style="double"/>`) are emitted as ASCII `=` repeated |
| 18 |
* across the paper width instead of the CP437 box-drawing byte 0xCD. This |
| 19 |
* keeps the output codepage-independent so it renders correctly regardless of |
| 20 |
* the printer's active character table. |
| 21 |
* - Images (`<image>`) are thresholded to 1-bit dots by Thermal_Bitmap and sent |
| 22 |
* as a `GS v 0` raster bit image. |
| 23 |
* - CP932 / Japanese kanji-mode byte sequences are out of scope; text is |
| 24 |
* emitted as plain UTF-8. |
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* |
| 26 |
* @author Paul Kilmurray <[email protected]> |
| 27 |
* |
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* @see http://wcpos.com |
| 29 |
* @package WCPOS\WooCommercePOS |
| 30 |
*/ |
| 31 |
|
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namespace WCPOS\WooCommercePOS\Templates\Thermal; |
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|
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use WCPOS\WooCommercePOS\Templates\Barcode_Symbology; |
| 35 |
|
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/** |
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* Escpos_Thermal_Emitter class. |
| 38 |
*/ |
| 39 |
class Escpos_Thermal_Emitter { |
| 40 |
|
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use Thermal_Emitter_Support; |
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|
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/** |
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* Render options. |
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* |
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* @var array |
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*/ |
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private $options = array(); |
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|
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/** |
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* Accumulated output bytes. |
| 52 |
* |
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* @var string |
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*/ |
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private $buffer = ''; |
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|
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/** |
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* Per-job text metrics and applied size stack. |
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* |
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* @var Thermal_Text_Layout |
| 61 |
*/ |
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private $layout; |
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|
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/** |
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* The current alignment mode (left|center|right). |
| 66 |
* |
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* @var string |
| 68 |
*/ |
| 69 |
private $align = 'left'; |
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|
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/** |
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* Whether bold is currently active. |
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* |
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* @var bool |
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*/ |
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private $bold = false; |
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|
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/** |
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* Whether underline is currently active. |
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* |
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* @var bool |
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*/ |
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private $underline = false; |
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|
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/** |
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* Whether invert is currently active. |
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* |
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* @var bool |
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*/ |
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private $invert = false; |
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|
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/** |
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* The active scaled line-spacing height, or 0 when none is active. |
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* |
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* @var int |
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*/ |
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private $active_scaled_spacing = 0; |
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|
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/** |
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* Whether unterminated text is sitting in the printer's line buffer. |
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* |
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* `GS v 0`, `GS k` and `GS ( k` are only executed at the beginning of a line |
| 103 |
* in standard mode; issued mid-line the printer discards them and reports |
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* nothing. Bare text in a template (`<receipt>Total<image/></receipt>`) parses |
| 105 |
* to a `raw-text` node, which prints without a terminator, so the emitter has |
| 106 |
* to know whether a line is open before it sends one of those commands. |
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* |
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* @var bool |
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*/ |
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private $line_open = false; |
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|
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/** |
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* Constructor. |
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* |
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* @param array $options Render options. |
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*/ |
| 117 |
public function __construct( array $options = array() ) { |
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$this->options = $options; |
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} |
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|
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/** |
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* Emit raw ESC/POS bytes from a thermal AST. |
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* |
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* @param array $ast The thermal AST root (a receipt node). |
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* |
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* @return string The raw ESC/POS bytes. |
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*/ |
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public function emit( array $ast ): string { |
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$this->buffer = ''; |
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$this->align = 'left'; |
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$this->bold = false; |
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$this->underline = false; |
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$this->invert = false; |
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$this->active_scaled_spacing = 0; |
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$this->line_open = false; |
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|
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$this->layout = new Thermal_Text_Layout( isset( $ast['paper_width'] ) ? (int) $ast['paper_width'] : 48, Thermal_Bounds::SIZE_MULTIPLIER_MAX ); |
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|
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// ESC @ — initialize the printer (once, at the very start). |
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$this->raw( array( 0x1b, 0x40 ) ); |
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|
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$children = isset( $ast['children'] ) && \is_array( $ast['children'] ) ? $ast['children'] : array(); |
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$this->walk_nodes( $this->nodes_with_auto_drawer( $children ) ); |
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|
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return $this->buffer; |
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} |
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|
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/** |
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* Emit ESC/POS drawer pulse bytes. |
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* |
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* @param string $connector Drawer connector. |
| 152 |
*/ |
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private function emit_drawer_pulse( string $connector ): void { |
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$connector = \WCPOS\WooCommercePOS\Services\Print_Job_Service::normalize_drawer_connector( $connector ); |
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$pin = 'pin5' === $connector ? 0x01 : 0x00; |
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|
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$this->raw( array( 0x1b, 0x70, $pin, 0x19, 0xfa ) ); |
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} |
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|
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/** |
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* Walk a single AST node. |
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* |
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* @param array $node The AST node. |
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* |
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* @return void |
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*/ |
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private function walk_node( array $node ): void { |
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$type = isset( $node['type'] ) ? $node['type'] : ''; |
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|
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switch ( $type ) { |
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case 'raw-text': |
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$this->emit_inline_text( isset( $node['value'] ) ? (string) $node['value'] : '' ); |
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break; |
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case 'text': |
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$this->emit_text_line( isset( $node['children'] ) ? $node['children'] : array() ); |
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break; |
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case 'bold': |
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$this->emit_bold( $node ); |
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break; |
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case 'underline': |
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$this->emit_underline( $node ); |
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break; |
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case 'invert': |
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$this->emit_invert( $node ); |
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break; |
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case 'size': |
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$this->emit_size( $node ); |
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break; |
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case 'align': |
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$this->emit_align( $node ); |
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break; |
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case 'row': |
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$this->emit_row( $node ); |
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break; |
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case 'line': |
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$this->emit_line( $node ); |
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break; |
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case 'barcode': |
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$this->emit_barcode( $node ); |
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break; |
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case 'qrcode': |
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$this->emit_qrcode( $node ); |
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break; |
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case 'image': |
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$this->emit_image( $node ); |
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break; |
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case 'cut': |
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$this->emit_cut( $node ); |
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break; |
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case 'feed': |
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$this->emit_feed( $node ); |
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break; |
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case 'drawer': |
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$this->emit_drawer_pulse( isset( $node['connector'] ) ? (string) $node['connector'] : 'pin2' ); |
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break; |
| 216 |
case 'receipt': |
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$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
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break; |
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} |
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} |
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|
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/** |
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* Emit inline (styled) text bytes for the current line. |
| 224 |
* |
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* @param string $value The raw text value. |
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* |
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* @return void |
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*/ |
| 229 |
private function emit_inline_text( string $value ): void { |
| 230 |
$text = Thermal_Text_Layout::normalize_text( $value ); |
| 231 |
if ( '' === $text ) { |
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return; |
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} |
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|
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$this->raw_string( $text ); |
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|
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// The parser preserves a text node verbatim, newlines included, so this |
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// may have ended the line itself — `<receipt>Total\n<image/></receipt>` |
| 239 |
// leaves the printer at column zero. Reading the state off the bytes just |
| 240 |
// written keeps close_open_line() from spending a second line feed there. |
| 241 |
$this->line_open = "\n" !== substr( $text, -1 ); |
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} |
| 243 |
|
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/** |
| 245 |
* Close an open line so a beginning-of-line command can execute. |
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* |
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* @return void |
| 248 |
*/ |
| 249 |
private function close_open_line(): void { |
| 250 |
if ( $this->line_open ) { |
| 251 |
$this->newline(); |
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} |
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} |
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|
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/** |
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* Emit a single printed text line (the children, padding, then a newline). |
| 257 |
* |
| 258 |
* @param array $children The child nodes of the text node. |
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* |
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* @return void |
| 261 |
*/ |
| 262 |
private function emit_text_line( array $children ): void { |
| 263 |
if ( 'left' !== $this->align ) { |
| 264 |
$plain = Thermal_Text_Layout::normalize_text( Thermal_Text_Layout::extract_text( $children ) ); |
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$pad = $this->layout->measure_padding( $this->align, $plain ); |
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if ( $pad > 0 ) { |
| 267 |
$this->raw_string( str_repeat( ' ', $pad ) ); |
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} |
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} |
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$this->walk_nodes( $children ); |
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$this->newline(); |
| 272 |
} |
| 273 |
|
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/** |
| 275 |
* Emit a bold-wrapped block. |
| 276 |
* |
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* @param array $node The bold AST node. |
| 278 |
* |
| 279 |
* @return void |
| 280 |
*/ |
| 281 |
private function emit_bold( array $node ): void { |
| 282 |
$previous = $this->bold; |
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$this->raw( array( 0x1b, 0x45, 0x01 ) ); |
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$this->bold = true; |
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$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
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$this->raw( array( 0x1b, 0x45, $previous ? 0x01 : 0x00 ) ); |
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$this->bold = $previous; |
| 288 |
} |
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|
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/** |
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* Emit an underline-wrapped block. |
| 292 |
* |
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* @param array $node The underline AST node. |
| 294 |
* |
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* @return void |
| 296 |
*/ |
| 297 |
private function emit_underline( array $node ): void { |
| 298 |
$previous = $this->underline; |
| 299 |
$this->raw( array( 0x1b, 0x2d, 0x01 ) ); |
| 300 |
$this->underline = true; |
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$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
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$this->raw( array( 0x1b, 0x2d, $previous ? 0x01 : 0x00 ) ); |
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$this->underline = $previous; |
| 304 |
} |
| 305 |
|
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/** |
| 307 |
* Emit an invert-wrapped block. |
| 308 |
* |
| 309 |
* @param array $node The invert AST node. |
| 310 |
* |
| 311 |
* @return void |
| 312 |
*/ |
| 313 |
private function emit_invert( array $node ): void { |
| 314 |
$previous = $this->invert; |
| 315 |
$this->raw( array( 0x1d, 0x42, 0x01 ) ); |
| 316 |
$this->invert = true; |
| 317 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 318 |
$this->raw( array( 0x1d, 0x42, $previous ? 0x01 : 0x00 ) ); |
| 319 |
$this->invert = $previous; |
| 320 |
} |
| 321 |
|
| 322 |
/** |
| 323 |
* Emit a size-wrapped block, including scaled line spacing. |
| 324 |
* |
| 325 |
* @param array $node The size AST node. |
| 326 |
* |
| 327 |
* @return void |
| 328 |
*/ |
| 329 |
private function emit_size( array $node ): void { |
| 330 |
$this->layout->enter_size( |
| 331 |
is_numeric( $node['width'] ?? null ) ? (int) $node['width'] : 1, |
| 332 |
is_numeric( $node['height'] ?? null ) ? (int) $node['height'] : 1 |
| 333 |
); |
| 334 |
$height = $this->layout->applied_scale()['height']; |
| 335 |
if ( $height > 1 ) { |
| 336 |
$this->active_scaled_spacing = max( $this->active_scaled_spacing, $height ); |
| 337 |
$this->raw( array( 0x1b, 0x33, min( 255, $height * 30 ) ) ); |
| 338 |
} |
| 339 |
|
| 340 |
$this->raw( array( 0x1d, 0x21, $this->size_byte() ) ); |
| 341 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 342 |
$this->layout->leave_size(); |
| 343 |
$this->raw( array( 0x1d, 0x21, $this->size_byte() ) ); |
| 344 |
} |
| 345 |
|
| 346 |
/** |
| 347 |
* Encode the applied scale as GS ! (width in the high nibble). |
| 348 |
* |
| 349 |
* GS ! accepts 0-7 per nibble (1-8x); Thermal_Bounds::SIZE_MULTIPLIER_MAX |
| 350 |
* keeps both applied axes within that command range. |
| 351 |
* |
| 352 |
* @return int The GS ! parameter byte. |
| 353 |
*/ |
| 354 |
private function size_byte(): int { |
| 355 |
$scale = $this->layout->applied_scale(); |
| 356 |
|
| 357 |
return ( ( $scale['width'] - 1 ) << 4 ) | ( $scale['height'] - 1 ); |
| 358 |
} |
| 359 |
|
| 360 |
/** |
| 361 |
* Emit an alignment-wrapped block. |
| 362 |
* |
| 363 |
* @param array $node The align AST node. |
| 364 |
* |
| 365 |
* @return void |
| 366 |
*/ |
| 367 |
private function emit_align( array $node ): void { |
| 368 |
$previous = $this->align; |
| 369 |
$mode = isset( $node['mode'] ) ? $node['mode'] : 'left'; |
| 370 |
$this->raw( array( 0x1b, 0x61, $this->align_byte( $mode ) ) ); |
| 371 |
$this->align = $mode; |
| 372 |
|
| 373 |
$this->walk_nodes( isset( $node['children'] ) ? $node['children'] : array() ); |
| 374 |
|
| 375 |
$this->raw( array( 0x1b, 0x61, $this->align_byte( $previous ) ) ); |
| 376 |
$this->align = $previous; |
| 377 |
} |
| 378 |
|
| 379 |
/** |
| 380 |
* Map an alignment mode to its ESC a parameter byte. |
| 381 |
* |
| 382 |
* @param string $mode The alignment mode. |
| 383 |
* |
| 384 |
* @return int The ESC a parameter byte. |
| 385 |
*/ |
| 386 |
private function align_byte( string $mode ): int { |
| 387 |
if ( 'center' === $mode ) { |
| 388 |
return 0x01; |
| 389 |
} |
| 390 |
if ( 'right' === $mode ) { |
| 391 |
return 0x02; |
| 392 |
} |
| 393 |
|
| 394 |
return 0x00; |
| 395 |
} |
| 396 |
|
| 397 |
/** |
| 398 |
* Emit a row as one physical line followed by a newline. |
| 399 |
* |
| 400 |
* @param array $node The row AST node. |
| 401 |
* |
| 402 |
* @return void |
| 403 |
*/ |
| 404 |
private function emit_row( array $node ): void { |
| 405 |
$cols = isset( $node['children'] ) && \is_array( $node['children'] ) ? $node['children'] : array(); |
| 406 |
$widths = $this->layout->measure_row_widths( $cols ); |
| 407 |
|
| 408 |
$line = ''; |
| 409 |
foreach ( $cols as $index => $col ) { |
| 410 |
$width = isset( $widths[ $index ] ) ? $widths[ $index ] : 1; |
| 411 |
$text = Thermal_Text_Layout::normalize_text( Thermal_Text_Layout::extract_text( isset( $col['children'] ) ? $col['children'] : array() ) ); |
| 412 |
$text = Thermal_Text_Layout::truncate_display( $text, $width ); |
| 413 |
$pad = max( 0, $width - Thermal_Text_Layout::display_width( $text ) ); |
| 414 |
$align = isset( $col['align'] ) ? $col['align'] : 'left'; |
| 415 |
if ( 'right' === $align ) { |
| 416 |
$line .= str_repeat( ' ', $pad ) . $text; |
| 417 |
} else { |
| 418 |
$line .= $text . str_repeat( ' ', $pad ); |
| 419 |
} |
| 420 |
} |
| 421 |
|
| 422 |
$this->raw_string( $line ); |
| 423 |
$this->newline(); |
| 424 |
} |
| 425 |
|
| 426 |
/** |
| 427 |
* Emit a horizontal rule line. |
| 428 |
* |
| 429 |
* @param array $node The line AST node. |
| 430 |
* |
| 431 |
* @return void |
| 432 |
*/ |
| 433 |
private function emit_line( array $node ): void { |
| 434 |
$style = isset( $node['style'] ) ? $node['style'] : 'single'; |
| 435 |
|
| 436 |
if ( 'dotted' === $style ) { |
| 437 |
$pattern = '. '; |
| 438 |
$repeat = (int) ceil( $this->layout->columns() / \strlen( $pattern ) ); |
| 439 |
$text = substr( str_repeat( $pattern, $repeat ), 0, $this->layout->columns() ); |
| 440 |
} elseif ( 'double' === $style ) { |
| 441 |
$text = str_repeat( '=', $this->layout->columns() ); |
| 442 |
} else { |
| 443 |
// single and dashed both render as '-' across the width. |
| 444 |
$text = str_repeat( '-', $this->layout->columns() ); |
| 445 |
} |
| 446 |
|
| 447 |
$this->raw_string( $text ); |
| 448 |
$this->newline(); |
| 449 |
} |
| 450 |
|
| 451 |
/** |
| 452 |
* Emit a 1D barcode using the native `GS k` function-B command. |
| 453 |
* |
| 454 |
* The symbology selector and the data encoding both come from |
| 455 |
* Barcode_Symbology (Epson ESC/POS Command Reference, `GS k`). An ESC/POS |
| 456 |
* printer handed data its symbology cannot encode prints nothing and reports |
| 457 |
* no error, so an unencodable value is printed as text instead — never as an |
| 458 |
* error string, which a cashier would have to read off the receipt. |
| 459 |
* |
| 460 |
* @param array $node The barcode AST node. |
| 461 |
* |
| 462 |
* @return void |
| 463 |
*/ |
| 464 |
private function emit_barcode( array $node ): void { |
| 465 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 466 |
if ( '' === trim( $value ) ) { |
| 467 |
return; |
| 468 |
} |
| 469 |
|
| 470 |
// Before the validation branch, not after: GS k only executes at the |
| 471 |
// beginning of a line, and the rescue below centres its text against the |
| 472 |
// full paper width, so both outcomes need the line closed first. |
| 473 |
$this->close_open_line(); |
| 474 |
|
| 475 |
$type = isset( $node['barcode_type'] ) ? (string) $node['barcode_type'] : 'code128'; |
| 476 |
$height = isset( $node['height'] ) ? (int) $node['height'] : 40; |
| 477 |
$height = max( Thermal_Bounds::BARCODE_HEIGHT_MIN, min( Thermal_Bounds::BARCODE_HEIGHT_MAX, $height ) ); |
| 478 |
|
| 479 |
if ( ! Barcode_Symbology::is_valid_value( $type, $value, Barcode_Symbology::LANE_ESCPOS ) ) { |
| 480 |
$this->raw_string( $this->centered_text( $value, $this->layout->columns() ) ); |
| 481 |
$this->newline(); |
| 482 |
|
| 483 |
return; |
| 484 |
} |
| 485 |
|
| 486 |
$this->raw( array( 0x1d, 0x68, $height ) ); // GS h — barcode height. |
| 487 |
$this->raw( array( 0x1d, 0x77, 0x02 ) ); // GS w — module width. |
| 488 |
// GS H 2 — HRI below the bars, matching the preview, the PDF and the |
| 489 |
// raster lane. With HRI off the merchant designs against a receipt that |
| 490 |
// carries the order number and the printer hands over one that does not. |
| 491 |
$this->raw( array( 0x1d, 0x48, 0x02 ) ); |
| 492 |
|
| 493 |
$data = Barcode_Symbology::escpos_payload( $type, $value ); |
| 494 |
// GS k m n d1..dn — function B, length-prefixed. |
| 495 |
$this->raw( array( 0x1d, 0x6b, Barcode_Symbology::escpos_id( $type ), \strlen( $data ) ) ); |
| 496 |
$this->raw_string( $data ); |
| 497 |
} |
| 498 |
|
| 499 |
/** |
| 500 |
* Print a template `<image>` (in practice, the store logo). |
| 501 |
* |
| 502 |
* `GS v 0 m xL xH yL yH d1..dk` — the raster bit image, whose data layout is |
| 503 |
* exactly what Thermal_Bitmap produces: row-major, MSB first, a set bit being |
| 504 |
* a black dot. xL/xH count BYTES per row, not dots, which is why the bitmap |
| 505 |
* pads its width to a whole byte. |
| 506 |
* |
| 507 |
* The image is centred unconditionally, ignoring any enclosing `<align>`. |
| 508 |
* That is the contract the other three renderers already keep — the preview |
| 509 |
* (thermal-renderer.ts), the PDF (Html_Thermal_Emitter::render_image()) and |
| 510 |
* the raster lane (Raster_Thermal_Emitter::draw_image()) all hard-centre an |
| 511 |
* `<image>` — and inheriting the `ESC a` state instead would left-align the |
| 512 |
* bare `<image>` the template editor inserts, which all three show centred. |
| 513 |
* |
| 514 |
* No trailing line feed: `GS v 0` leaves the printer "at the beginning of the |
| 515 |
* line" (ESC/POS Command Reference), so one here would open a blank line the |
| 516 |
* preview does not have. |
| 517 |
* |
| 518 |
* A src that resolves to nothing (a remote URL, a missing file) prints |
| 519 |
* nothing rather than a stray line feed. |
| 520 |
* |
| 521 |
* @param array $node The image AST node. |
| 522 |
* |
| 523 |
* @return void |
| 524 |
*/ |
| 525 |
private function emit_image( array $node ): void { |
| 526 |
$bitmap = Thermal_Bitmap::from_node( $node, Thermal_Bounds::paper_dots( $this->layout->columns() ) ); |
| 527 |
if ( null === $bitmap ) { |
| 528 |
return; |
| 529 |
} |
| 530 |
|
| 531 |
// GS v 0 only executes at the beginning of a line in standard mode. |
| 532 |
$this->close_open_line(); |
| 533 |
|
| 534 |
$bytes_per_row = $bitmap->bytes_per_row(); |
| 535 |
$height = $bitmap->height(); |
| 536 |
|
| 537 |
$this->raw( array( 0x1b, 0x61, $this->align_byte( 'center' ) ) ); |
| 538 |
$this->raw( |
| 539 |
array( |
| 540 |
0x1d, |
| 541 |
0x76, |
| 542 |
0x30, |
| 543 |
0x00, |
| 544 |
$bytes_per_row & 0xff, |
| 545 |
( $bytes_per_row >> 8 ) & 0xff, |
| 546 |
$height & 0xff, |
| 547 |
( $height >> 8 ) & 0xff, |
| 548 |
) |
| 549 |
); |
| 550 |
$this->raw_string( $bitmap->raster() ); |
| 551 |
$this->raw( array( 0x1b, 0x61, $this->align_byte( $this->align ) ) ); |
| 552 |
} |
| 553 |
|
| 554 |
/** |
| 555 |
* Emit a model-2 QR code using native GS ( k commands. |
| 556 |
* |
| 557 |
* @param array $node The qrcode AST node. |
| 558 |
* |
| 559 |
* @return void |
| 560 |
*/ |
| 561 |
private function emit_qrcode( array $node ): void { |
| 562 |
$value = isset( $node['value'] ) ? (string) $node['value'] : ''; |
| 563 |
$size = isset( $node['size'] ) ? (int) $node['size'] : 4; |
| 564 |
$size = max( Thermal_Bounds::QRCODE_SIZE_MIN, min( Thermal_Bounds::QRCODE_SIZE_MAX, $size ) ); |
| 565 |
|
| 566 |
// GS ( k only executes at the beginning of a line in standard mode. |
| 567 |
$this->close_open_line(); |
| 568 |
|
| 569 |
// Select model 2. |
| 570 |
$this->raw( array( 0x1d, 0x28, 0x6b, 0x04, 0x00, 0x31, 0x41, 0x32, 0x00 ) ); |
| 571 |
// Set module size. |
| 572 |
$this->raw( array( 0x1d, 0x28, 0x6b, 0x03, 0x00, 0x31, 0x43, $size ) ); |
| 573 |
// Set error correction level (M). |
| 574 |
$this->raw( array( 0x1d, 0x28, 0x6b, 0x03, 0x00, 0x31, 0x45, 0x31 ) ); |
| 575 |
|
| 576 |
// Store data. |
| 577 |
$data = substr( $value, 0, 0xffff - 3 ); |
| 578 |
$payload = \strlen( $data ) + 3; |
| 579 |
$p_l = $payload & 0xff; |
| 580 |
$p_h = ( $payload >> 8 ) & 0xff; |
| 581 |
$this->raw( array( 0x1d, 0x28, 0x6b, $p_l, $p_h, 0x31, 0x50, 0x30 ) ); |
| 582 |
$this->raw_string( $data ); |
| 583 |
|
| 584 |
// Print the stored symbol. |
| 585 |
$this->raw( array( 0x1d, 0x28, 0x6b, 0x03, 0x00, 0x31, 0x51, 0x30 ) ); |
| 586 |
} |
| 587 |
|
| 588 |
/** |
| 589 |
* Feed to the cutting position and emit a paper cut command. |
| 590 |
* |
| 591 |
* @param array $node The cut AST node. |
| 592 |
* |
| 593 |
* @return void |
| 594 |
*/ |
| 595 |
private function emit_cut( array $node ): void { |
| 596 |
$cut_type = isset( $node['cut_type'] ) ? $node['cut_type'] : 'partial'; |
| 597 |
$this->raw( array( 0x1d, 0x56, 'full' === $cut_type ? 0x41 : 0x42, 0x00 ) ); |
| 598 |
} |
| 599 |
|
| 600 |
/** |
| 601 |
* Emit a paper feed of N lines. |
| 602 |
* |
| 603 |
* @param array $node The feed AST node. |
| 604 |
* |
| 605 |
* @return void |
| 606 |
*/ |
| 607 |
private function emit_feed( array $node ): void { |
| 608 |
$lines = Thermal_Bounds::clamp_int( |
| 609 |
isset( $node['lines'] ) ? $node['lines'] : null, |
| 610 |
Thermal_Bounds::FEED_LINES_MIN, |
| 611 |
Thermal_Bounds::FEED_LINES_MIN, |
| 612 |
Thermal_Bounds::FEED_LINES_MAX |
| 613 |
); |
| 614 |
for ( $index = 0; $index < $lines; $index++ ) { |
| 615 |
$this->raw( array( 0x0a ) ); |
| 616 |
} |
| 617 |
$this->line_open = false; |
| 618 |
} |
| 619 |
|
| 620 |
/** |
| 621 |
* Emit a single newline and restore scaled line spacing if active. |
| 622 |
* |
| 623 |
* @return void |
| 624 |
*/ |
| 625 |
private function newline(): void { |
| 626 |
$this->raw( array( 0x0a ) ); |
| 627 |
$this->line_open = false; |
| 628 |
if ( $this->active_scaled_spacing > 0 ) { |
| 629 |
$this->raw( array( 0x1b, 0x32 ) ); |
| 630 |
$this->active_scaled_spacing = 0; |
| 631 |
} |
| 632 |
} |
| 633 |
|
| 634 |
/** |
| 635 |
* Append a list of ordinal bytes to the output buffer. |
| 636 |
* |
| 637 |
* @param array $bytes The ordinal bytes. |
| 638 |
* |
| 639 |
* @return void |
| 640 |
*/ |
| 641 |
private function raw( array $bytes ): void { |
| 642 |
foreach ( $bytes as $byte ) { |
| 643 |
$this->buffer .= \chr( $byte & 0xff ); |
| 644 |
} |
| 645 |
} |
| 646 |
|
| 647 |
/** |
| 648 |
* Append a raw string to the output buffer. |
| 649 |
* |
| 650 |
* @param string $value The string to append. |
| 651 |
* |
| 652 |
* @return void |
| 653 |
*/ |
| 654 |
private function raw_string( string $value ): void { |
| 655 |
$this->buffer .= $value; |
| 656 |
} |
| 657 |
} |
| 658 |
|
