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592 lines
20 KiB
PHP
592 lines
20 KiB
PHP
<?php
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namespace App\Models\Labels;
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use App\Helpers\Helper;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\File;
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use TCPDF;
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use TCPDF_STATIC;
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/**
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* Model for Labels.
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*
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* @version v1.0
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*/
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abstract class Label
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{
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/**
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* Returns the unit of measure used
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* 'pt', 'mm', 'cm', 'in'
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*
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* @return string
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*/
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public abstract function getUnit();
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/**
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* Returns the label's width in getUnit() units
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*
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* @return float
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*/
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public abstract function getWidth();
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/**
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* Returns the label's height in getUnit() units
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*
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* @return float
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*/
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public abstract function getHeight();
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/**
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* Returns the label's top margin in getUnit() units
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*
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* @return float
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*/
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public abstract function getMarginTop();
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/**
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* Returns the label's bottom margin in getUnit() units
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*
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* @return float
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*/
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public abstract function getMarginBottom();
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/**
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* Returns the label's left margin in getUnit() units
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*
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* @return float
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*/
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public abstract function getMarginLeft();
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/**
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* Returns the label's right margin in getUnit() units
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*
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* @return float
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*/
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public abstract function getMarginRight();
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/**
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* Returns whether the template supports a 1D barcode.
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*
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* @return bool
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*/
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public abstract function getSupport1DBarcode();
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/**
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* Returns whether the template supports a 2D barcode.
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*
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* @return bool
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*/
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public abstract function getSupport2DBarcode();
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/**
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* Returns the number of fields the template supports.
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*
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* @return int
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*/
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public abstract function getSupportFields();
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/**
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* Returns whether the template supports a logo.
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*
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* @return bool
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*/
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public abstract function getSupportLogo();
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/**
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* Returns whether the template supports a title.
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*
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* @return bool
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*/
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public abstract function getSupportTitle();
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/**
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* Make changes to the PDF properties here. OPTIONAL.
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*
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* @param TCPDF $pdf The TCPDF instance
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*/
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public abstract function preparePDF(TCPDF $pdf);
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/**
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* Write single data record as content here.
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param Collection $record A data record
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*/
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public abstract function write(TCPDF $pdf, Collection $record);
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/**
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* Handle the data here. Override for multiple-per-page handling
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param Collection $data The data
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*/
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public function writeAll(TCPDF $pdf, Collection $data) {
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$data->each(function ($record, $index) use ($pdf) {
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$pdf->AddPage();
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$this->write($pdf, $record);
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});
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}
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/**
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* Returns the qualified class name relative to the Label class's namespace.
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*
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* @return string
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*/
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public final function getName() {
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$refClass = new \ReflectionClass(Label::class);
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return str_replace($refClass->getNamespaceName() . '\\', '', get_class($this));
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}
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/**
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* Returns the label's orientation as a string.
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* 'L' = Landscape
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* 'P' = Portrait
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*
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* @return string
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*/
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public final function getOrientation() {
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return ($this->getWidth() >= $this->getHeight()) ? 'L' : 'P';
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}
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/**
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* Returns the label's printable area as an object.
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*
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* @return object [ 'x1'=>0.00, 'y1'=>0.00, 'x2'=>0.00, 'y2'=>0.00, 'w'=>0.00, 'h'=>0.00 ]
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*/
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public final function getPrintableArea() {
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return (object)[
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'x1' => $this->getMarginLeft(),
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'y1' => $this->getMarginTop(),
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'x2' => $this->getWidth() - $this->getMarginRight(),
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'y2' => $this->getHeight() - $this->getMarginBottom(),
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'w' => $this->getWidth() - $this->getMarginLeft() - $this->getMarginRight(),
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'h' => $this->getHeight() - $this->getMarginTop() - $this->getMarginBottom(),
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];
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}
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/**
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* Write a text cell.
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param string $text The text to write. Supports 'some **bold** text'.
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* @param float $x X position of top-left
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* @param float $y Y position of top-left
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* @param string $font The font family
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* @param string $style The font style
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* @param int $size The font size in getUnit() units
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* @param string $align Align text in the box. 'L' left, 'R' right, 'C' center.
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* @param float $width Force text box width. NULL to auto-fit.
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* @param float $height Force text box height. NULL to auto-fit.
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* @param bool $squash Squash text if it's too big
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* @param int $border Thickness of border. Default = 0.
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* @param int $spacing Letter spacing. Default = 0.
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*/
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public final function writeText(TCPDF $pdf, $text, $x, $y, $font=null, $style=null, $size=null, $align='L', $width=null, $height=null, $squash=false, $border=0, $spacing=0) {
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$prevFamily = $pdf->getFontFamily();
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$prevStyle = $pdf->getFontStyle();
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$prevSizePt = $pdf->getFontSizePt();
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$text = !empty($text) ? $text : '';
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$fontFamily = !empty($font) ? $font : $prevFamily;
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$fontStyle = !empty($style) ? $style : $prevStyle;
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if ($size) $fontSizePt = Helper::convertUnit($size, $this->getUnit(), 'pt', true);
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else $fontSizePt = $prevSizePt;
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$pdf->SetFontSpacing($spacing);
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$parts = collect(explode('**', $text))
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->map(function ($part, $index) use ($pdf, $fontFamily, $fontStyle, $fontSizePt) {
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$modStyle = ($index % 2 == 1) ? 'B' : $fontStyle;
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$pdf->setFont($fontFamily, $modStyle, $fontSizePt);
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return [
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'text' => $part,
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'text_width' => $pdf->GetStringWidth($part),
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'font_family' => $fontFamily,
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'font_style' => $modStyle,
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'font_size' => $fontSizePt,
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];
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});
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$textWidth = $parts->reduce(function ($carry, $part) { return $carry += $part['text_width']; });
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$cellWidth = !empty($width) ? $width : $textWidth;
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if ($squash && ($textWidth > 0)) {
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$scaleFactor = min(1.0, $cellWidth / $textWidth);
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$parts = $parts->map(function ($part, $index) use ($scaleFactor) {
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$part['text_width'] = $part['text_width'] * $scaleFactor;
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return $part;
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});
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}
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$cellHeight = !empty($height) ? $height : Helper::convertUnit($fontSizePt, 'pt', $this->getUnit());
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if ($border) {
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$prevLineWidth = $pdf->getLineWidth();
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$pdf->setLineWidth($border);
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$pdf->Rect($x, $y, $cellWidth, $cellHeight);
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$pdf->setLineWidth($prevLineWidth);
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}
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switch($align) {
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case 'R': $startX = ($x + $cellWidth) - min($cellWidth, $textWidth); break;
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case 'C': $startX = ($x + ($cellWidth / 2)) - (min($cellWidth, $textWidth) / 2); break;
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case 'L':
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default: $startX = $x; break;
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}
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$parts->reduce(function ($currentX, $part) use ($pdf, $y, $cellHeight) {
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$pdf->SetXY($currentX, $y);
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$pdf->setFont($part['font_family'], $part['font_style'], $part['font_size']);
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$pdf->Cell($part['text_width'], $cellHeight, $part['text'], 0, 0, '', false, '', 1, true);
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return $currentX += $part['text_width'];
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}, $startX);
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$pdf->SetFont($prevFamily, $prevStyle, $prevSizePt);
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$pdf->SetFontSpacing(0);
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}
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/**
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* Write an image.
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param string $image The image to write
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* @param float $x X position of top-left
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* @param float $y Y position of top-left
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* @param float $width The container width
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* @param float $height The container height
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* @param string $halign Align text in the box. 'L' left, 'R' right, 'C' center. Default 'L'.
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* @param string $valign Align text in the box. 'T' top, 'B' bottom, 'C' center. Default 'T'.
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* @param int $dpi Pixels per inch
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* @param bool $resize Resize to fit container
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* @param bool $stretch Stretch (vs Scale) to fit container
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* @param int $border Thickness of border. Default = 0.
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*
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* @return array Returns the final calculated size [w,h]
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*/
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public final function writeImage(TCPDF $pdf, $image, $x, $y, $width=null, $height=null, $halign='L', $valign='L', $dpi=300, $resize=false, $stretch=false, $border=0) {
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if (empty($image)) return [0,0];
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$imageInfo = getimagesize($image);
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if (!$imageInfo) return [0,0]; // TODO: SVG or other
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$imageWidthPx = $imageInfo[0];
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$imageHeightPx = $imageInfo[1];
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$imageType = image_type_to_extension($imageInfo[2], false);
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$imageRatio = $imageWidthPx / $imageHeightPx;
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$dpu = Helper::convertUnit($dpi, $this->getUnit(), 'in');
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$imageWidth = $imageWidthPx / $dpu;
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$imageHeight = $imageHeightPx / $dpu;
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$outputWidth = $imageWidth;
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$outputHeight = $imageHeight;
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if ($resize) {
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// Assign specified parameters
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$limitWidth = $width;
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$limitHeight = $height;
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// If not, try calculating from the other dimension
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$limitWidth = ($limitWidth > 0) ? $limitWidth : ($limitHeight / $imageRatio);
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$limitHeight = ($limitHeight > 0) ? $limitHeight : ($limitWidth * $imageRatio);
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// If not, just use the image size
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$limitWidth = ($limitWidth > 0) ? $limitWidth : $imageWidth;
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$limitHeight = ($limitHeight > 0) ? $limitHeight : $imageHeight;
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$scaleWidth = $limitWidth / $imageWidth;
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$scaleHeight = $limitHeight / $imageHeight;
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// If non-stretch, make both scales factors equal
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if (!$stretch) {
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// Do we need to scale down at all? That's most important.
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if (($scaleWidth < 1.0) || ($scaleHeight < 1.0)) {
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// Choose largest scale-down
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$scaleWidth = min($scaleWidth, $scaleHeight);
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} else {
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// Choose smallest scale-up
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$scaleWidth = min(max($scaleWidth, 1.0), max($scaleHeight, 1.0));
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}
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$scaleHeight = $scaleWidth;
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}
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$outputWidth = $imageWidth * $scaleWidth;
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$outputHeight = $imageHeight * $scaleHeight;
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}
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// Container
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$containerWidth = !empty($width) ? $width : $outputWidth;
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$containerHeight = !empty($height) ? $height : $outputHeight;
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// Horizontal Position
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switch ($halign) {
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case 'R': $originX = ($x + $containerWidth) - $outputWidth; break;
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case 'C': $originX = ($x + ($containerWidth / 2)) - ($outputWidth / 2); break;
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case 'L':
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default: $originX = $x; break;
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}
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// Vertical Position
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switch ($valign) {
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case 'B': $originY = ($y + $containerHeight) - $outputHeight; break;
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case 'C': $originY = ($y + ($containerHeight / 2)) - ($outputHeight / 2); break;
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case 'T':
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default: $originY = $y; break;
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}
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// Actual Image
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$pdf->Image($image, $originX, $originY, $outputWidth, $outputHeight, $imageType, '', '', true);
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// Border
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if ($border) {
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$prevLineWidth = $pdf->getLineWidth();
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$pdf->setLineWidth($border);
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$pdf->Rect($x, $y, $containerWidth, $containerHeight);
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$pdf->setLineWidth($prevLineWidth);
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}
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return [ $outputWidth, $outputHeight ];
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}
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/**
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* Write a 1D barcode.
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param string $value The barcode content
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* @param string $type The barcode type
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* @param float $x X position of top-left
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* @param float $y Y position of top-left
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* @param float $width The container width
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* @param float $height The container height
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*/
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public final function write1DBarcode(TCPDF $pdf, $value, $type, $x, $y, $width, $height) {
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if (empty($value)) return;
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$pdf->write1DBarcode($value, $type, $x, $y, $width, $height, null, ['stretch'=>true]);
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}
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/**
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* Write a 2D barcode.
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*
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* @param TCPDF $pdf The TCPDF instance
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* @param string $value The barcode content
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* @param string $type The barcode type
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* @param float $x X position of top-left
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* @param float $y Y position of top-left
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* @param float $width The container width
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* @param float $height The container height
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*/
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public final function write2DBarcode(TCPDF $pdf, $value, $type, $x, $y, $width, $height) {
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if (empty($value)) return;
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$pdf->write2DBarcode($value, $type, $x, $y, $width, $height, null, ['stretch'=>true]);
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}
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/**
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* Checks the template is internally valid
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*/
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public final function validate() {
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$this->validateUnits();
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$this->validateSize();
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$this->validateMargins();
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$this->validateSupport();
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}
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private function validateUnits() {
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$validUnits = [ 'pt', 'mm', 'cm', 'in' ];
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$unit = $this->getUnit();
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if (!in_array(strtolower($unit), $validUnits)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_value', [
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'name' => 'getUnit()',
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'expected' => '[ \''.implode('\', \'', $validUnits).'\' ]',
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'actual' => '\''.$unit.'\''
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]));
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}
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}
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private function validateSize() {
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$width = $this->getWidth();
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if (!is_numeric($width) || is_string($width)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getWidth()',
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'expected' => 'float',
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'actual' => gettype($width)
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]));
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}
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$height = $this->getHeight();
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if (!is_numeric($height) || is_string($height)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getHeight()',
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'expected' => 'float',
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'actual' => gettype($height)
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]));
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}
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}
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private function validateMargins() {
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$marginTop = $this->getMarginTop();
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if (!is_numeric($marginTop) || is_string($marginTop)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getMarginTop()',
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'expected' => 'float',
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'actual' => gettype($marginTop)
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]));
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}
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$marginBottom = $this->getMarginBottom();
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if (!is_numeric($marginBottom) || is_string($marginBottom)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getMarginBottom()',
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'expected' => 'float',
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'actual' => gettype($marginBottom)
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]));
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}
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$marginLeft = $this->getMarginLeft();
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if (!is_numeric($marginLeft) || is_string($marginLeft)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getMarginLeft()',
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'expected' => 'float',
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'actual' => gettype($marginLeft)
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]));
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}
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$marginRight = $this->getMarginRight();
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if (!is_numeric($marginRight) || is_string($marginRight)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getMarginRight()',
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'expected' => 'float',
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'actual' => gettype($marginRight)
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]));
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}
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}
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private function validateSupport() {
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$support1D = $this->getSupport1DBarcode();
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if (!is_bool($support1D)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getSupport1DBarcode()',
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'expected' => 'boolean',
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'actual' => gettype($support1D)
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]));
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}
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$support2D = $this->getSupport2DBarcode();
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if (!is_bool($support2D)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getSupport2DBarcode()',
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'expected' => 'boolean',
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'actual' => gettype($support2D)
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]));
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}
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$supportFields = $this->getSupportFields();
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if (!is_int($supportFields)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getSupportFields()',
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'expected' => 'integer',
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'actual' => gettype($supportFields)
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]));
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}
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$supportLogo = $this->getSupportLogo();
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if (!is_bool($supportLogo)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getSupportLogo()',
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'expected' => 'boolean',
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'actual' => gettype($supportLogo)
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]));
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}
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$supportTitle = $this->getSupportTitle();
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if (!is_bool($supportTitle)) {
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throw new \UnexpectedValueException(trans('admin/labels/message.invalid_return_type', [
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'name' => 'getSupportTitle()',
|
|
'expected' => 'boolean',
|
|
'actual' => gettype($supportTitle)
|
|
]));
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Public Static Functions
|
|
*/
|
|
|
|
/**
|
|
* Find size of a page by its format.
|
|
*
|
|
* @param string $format Format name (eg: 'A4', 'LETTER', etc.)
|
|
* @param string $orientation 'L' for Landscape, 'P' for Portrait ('L' default)
|
|
* @param string $unit Unit of measure to return in ('mm' default)
|
|
*
|
|
* @return object (object)[ 'width' => (float)123.4, 'height' => (float)123.4 ]
|
|
*/
|
|
public static function fromFormat($format, $orientation='L', $unit='mm', $round=false) {
|
|
$size = collect(TCPDF_STATIC::getPageSizeFromFormat($format))
|
|
->sort()
|
|
->map(function ($value) use ($unit) {
|
|
return Helper::convertUnit($value, 'pt', $unit);
|
|
})
|
|
->toArray();
|
|
$width = ($orientation == 'L') ? $size[1] : $size[0];
|
|
$height = ($orientation == 'L') ? $size[0] : $size[1];
|
|
return (object)[
|
|
'width' => ($round !== false) ? round($width, $round) : $width,
|
|
'height' => ($round !== false) ? round($height, $round) : $height,
|
|
];
|
|
}
|
|
|
|
/**
|
|
* Find a Label by its path (or just return them all).
|
|
*
|
|
* Unlike most Models, these are defined by their existence as non-
|
|
* abstract classes stored in Models\Labels.
|
|
*
|
|
* @param string|Arrayable|array|null $path Label path[s]
|
|
* @return Collection|Label|null
|
|
*/
|
|
public static function find($name=null) {
|
|
// Find many
|
|
if (is_array($name) || $name instanceof Arrayable) {
|
|
$labels = collect($name)
|
|
->map(function ($thisname) {
|
|
return static::find($thisname);
|
|
})
|
|
->whereNotNull();
|
|
return ($labels->count() > 0) ? $labels : null;
|
|
}
|
|
|
|
// Find one
|
|
if ($name !== null) {
|
|
return static::find()
|
|
->sole(function ($label) use ($name) {
|
|
return $label->getName() == $name;
|
|
});
|
|
}
|
|
|
|
// Find all
|
|
return collect(File::allFiles(__DIR__))
|
|
->map(function ($file) {
|
|
preg_match_all('/\/*(.+?)(?:\/|\.)/', $file->getRelativePathName(), $matches);
|
|
return __NAMESPACE__ . '\\' . implode('\\', $matches[1]);
|
|
})
|
|
->filter(function ($name) {
|
|
if (!class_exists($name)) return false;
|
|
$refClass = new \ReflectionClass($name);
|
|
if ($refClass->isAbstract()) return false;
|
|
return $refClass->isSubclassOf(Label::class);
|
|
})
|
|
->map(function ($name) {
|
|
return new $name();
|
|
});
|
|
}
|
|
|
|
|
|
|
|
}
|