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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Writer; |
| 6 | |
| 7 | use Phpdftk\Pdf\Core\Content\ContentStream; |
| 8 | |
| 9 | /** |
| 10 | * Renders {@see Table} content into a {@see ContentStream}. The |
| 11 | * renderer is stateless and reusable; pagination logic lives at the |
| 12 | * call site (`Pdf::addTable` measures each row and starts a new page |
| 13 | * when needed). |
| 14 | * |
| 15 | * Coordinates: `$y` is the y-coordinate of the top edge of the row; |
| 16 | * the row is drawn downward and the returned float is the height |
| 17 | * consumed. |
| 18 | */ |
| 19 | final class TableRenderer |
| 20 | { |
| 21 | /** |
| 22 | * Height a single row needs, in points, after greedy word-wrap. |
| 23 | * |
| 24 | * @param list<string> $row |
| 25 | * @param list<float> $widths |
| 26 | */ |
| 27 | public function rowHeight(array $row, array $widths, TableRenderContext $ctx, bool $isHeader): float |
| 28 | { |
| 29 | $size = $ctx->fontSize; |
| 30 | $padding = $ctx->style->cellPadding; |
| 31 | $metrics = $isHeader ? $ctx->headerMetrics : $ctx->bodyMetrics; |
| 32 | $font = $isHeader ? $ctx->headerFont : $ctx->bodyFont; |
| 33 | |
| 34 | $maxLines = 1; |
| 35 | $colCount = count($widths); |
| 36 | for ($i = 0; $i < $colCount; $i++) { |
| 37 | $cell = $row[$i] ?? ''; |
| 38 | $innerW = max(0.0, $widths[$i] - 2.0 * $padding); |
| 39 | $encoded = $font->getTextEncoder()?->encode($cell) ?? $cell; |
| 40 | $lines = TextLayout::wrap($encoded, $metrics, $size, $innerW); |
| 41 | $maxLines = max($maxLines, count($lines)); |
| 42 | } |
| 43 | |
| 44 | return $maxLines * $size * $ctx->lineHeight + 2.0 * $padding; |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Draw one row at (x, y). Returns the height consumed so the |
| 49 | * caller can advance its cursor. |
| 50 | * |
| 51 | * @param list<string> $row |
| 52 | * @param list<float> $widths |
| 53 | */ |
| 54 | public function drawRow( |
| 55 | ContentStream $cs, |
| 56 | float $x, |
| 57 | float $y, |
| 58 | array $row, |
| 59 | array $widths, |
| 60 | TableRenderContext $ctx, |
| 61 | bool $isHeader, |
| 62 | ): float { |
| 63 | $style = $ctx->style; |
| 64 | $size = $ctx->fontSize; |
| 65 | $padding = $style->cellPadding; |
| 66 | $lineHeight = $size * $ctx->lineHeight; |
| 67 | $font = $isHeader ? $ctx->headerFont : $ctx->bodyFont; |
| 68 | $metrics = $isHeader ? $ctx->headerMetrics : $ctx->bodyMetrics; |
| 69 | |
| 70 | $rowH = $this->rowHeight($row, $widths, $ctx, $isHeader); |
| 71 | $totalWidth = array_sum($widths); |
| 72 | |
| 73 | $cs->saveGraphicsState(); |
| 74 | |
| 75 | // Header background fill, drawn before borders so the lines sit on top. |
| 76 | if ($isHeader && $style->headerBgColor !== null) { |
| 77 | [$r, $g, $b] = $style->headerBgColor; |
| 78 | $cs->setFillColorRGB($r, $g, $b) |
| 79 | ->rectangle($x, $y - $rowH, $totalWidth, $rowH) |
| 80 | ->fill(); |
| 81 | } |
| 82 | |
| 83 | // Borders (cells outline + outer frame). |
| 84 | if ($style->borderWidth > 0.0) { |
| 85 | [$br, $bg, $bb] = $style->borderColor; |
| 86 | $cs->setStrokeColorRGB($br, $bg, $bb)->setLineWidth($style->borderWidth); |
| 87 | |
| 88 | // Top and bottom of the row. |
| 89 | $cs->moveTo($x, $y)->lineTo($x + $totalWidth, $y)->stroke(); |
| 90 | $cs->moveTo($x, $y - $rowH)->lineTo($x + $totalWidth, $y - $rowH)->stroke(); |
| 91 | |
| 92 | // Vertical column dividers (left edge of every cell + right edge of last cell). |
| 93 | $cx = $x; |
| 94 | foreach ($widths as $w) { |
| 95 | $cs->moveTo($cx, $y)->lineTo($cx, $y - $rowH)->stroke(); |
| 96 | $cx += $w; |
| 97 | } |
| 98 | $cs->moveTo($cx, $y)->lineTo($cx, $y - $rowH)->stroke(); |
| 99 | } |
| 100 | |
| 101 | // Cell content. |
| 102 | $cs->setFillColorRGB(0.0, 0.0, 0.0); |
| 103 | $colX = $x; |
| 104 | $colCount = count($widths); |
| 105 | for ($i = 0; $i < $colCount; $i++) { |
| 106 | $cell = $row[$i] ?? ''; |
| 107 | $colW = $widths[$i]; |
| 108 | $innerW = max(0.0, $colW - 2.0 * $padding); |
| 109 | |
| 110 | $encoded = $font->getTextEncoder()?->encode($cell) ?? $cell; |
| 111 | $lines = TextLayout::wrap($encoded, $metrics, $size, $innerW); |
| 112 | $align = $style->alignmentFor($i); |
| 113 | |
| 114 | $textTop = $y - $padding; |
| 115 | foreach ($lines as $lineIdx => $line) { |
| 116 | $lineWidth = TextLayout::measure($line, $metrics, $size); |
| 117 | $tx = $colX + $padding + match ($align) { |
| 118 | Alignment::Left => 0.0, |
| 119 | Alignment::Center => ($innerW - $lineWidth) / 2.0, |
| 120 | Alignment::Right => $innerW - $lineWidth, |
| 121 | }; |
| 122 | $ty = $textTop - ($lineIdx + 1) * $lineHeight + ($lineHeight - $size) / 2.0; |
| 123 | $cs->beginText() |
| 124 | ->setFont($font->getResourceName(), $size) |
| 125 | ->moveTextPosition($tx, $ty) |
| 126 | ->showText($line) |
| 127 | ->endText(); |
| 128 | } |
| 129 | |
| 130 | $colX += $colW; |
| 131 | } |
| 132 | |
| 133 | $cs->restoreGraphicsState(); |
| 134 | return $rowH; |
| 135 | } |
| 136 | } |