| 1: | <?php |
| 2: | |
| 3: | declare(strict_types=1); |
| 4: | |
| 5: | namespace Atk4\Ui\Table\Column; |
| 6: | |
| 7: | use Atk4\Data\Field; |
| 8: | use Atk4\Data\Model; |
| 9: | use Atk4\Ui\Exception; |
| 10: | use Atk4\Ui\Table; |
| 11: | |
| 12: | |
| 13: | |
| 14: | |
| 15: | |
| 16: | |
| 17: | |
| 18: | |
| 19: | |
| 20: | |
| 21: | |
| 22: | |
| 23: | |
| 24: | class ColorRating extends Table\Column |
| 25: | { |
| 26: | |
| 27: | public $min; |
| 28: | |
| 29: | public $max; |
| 30: | |
| 31: | |
| 32: | public $colors = ['#FF0000', '#00FF00']; |
| 33: | |
| 34: | |
| 35: | public $lessThanMinNoColor = false; |
| 36: | |
| 37: | |
| 38: | public $moreThanMaxNoColor = false; |
| 39: | |
| 40: | #[\Override] |
| 41: | protected function init(): void |
| 42: | { |
| 43: | parent::init(); |
| 44: | |
| 45: | if ($this->min >= $this->max) { |
| 46: | throw new Exception('Min must be lower than Max'); |
| 47: | } |
| 48: | |
| 49: | if (count($this->colors) < 2) { |
| 50: | throw new Exception('At least 2 colors must be set'); |
| 51: | } |
| 52: | } |
| 53: | |
| 54: | #[\Override] |
| 55: | public function getTagAttributes(string $position, array $attr = []): array |
| 56: | { |
| 57: | $attr['style'] ??= ''; |
| 58: | $attr['style'] .= '{$_' . $this->shortName . '_color_rating}'; |
| 59: | |
| 60: | return parent::getTagAttributes($position, $attr); |
| 61: | } |
| 62: | |
| 63: | #[\Override] |
| 64: | public function getDataCellHtml(Field $field = null, array $attr = []): string |
| 65: | { |
| 66: | if ($field === null) { |
| 67: | throw new Exception('ColorRating can be used only with model field'); |
| 68: | } |
| 69: | |
| 70: | return $this->getTag('body', '{$' . $field->shortName . '}', $attr); |
| 71: | } |
| 72: | |
| 73: | #[\Override] |
| 74: | public function getHtmlTags(Model $row, ?Field $field): array |
| 75: | { |
| 76: | $value = $field->get($row); |
| 77: | |
| 78: | $color = $value === null ? null : $this->getColorFromValue($value); |
| 79: | |
| 80: | if ($color === null) { |
| 81: | return parent::getHtmlTags($row, $field); |
| 82: | } |
| 83: | |
| 84: | return [ |
| 85: | '_' . $this->shortName . '_color_rating' => 'background-color: ' . $color . ';', |
| 86: | ]; |
| 87: | } |
| 88: | |
| 89: | private function getColorFromValue(float $value): ?string |
| 90: | { |
| 91: | if ($value < $this->min) { |
| 92: | if ($this->lessThanMinNoColor) { |
| 93: | return null; |
| 94: | } |
| 95: | |
| 96: | $value = $this->min; |
| 97: | } |
| 98: | |
| 99: | if ($value > $this->max) { |
| 100: | if ($this->moreThanMaxNoColor) { |
| 101: | return null; |
| 102: | } |
| 103: | |
| 104: | $value = $this->max; |
| 105: | } |
| 106: | |
| 107: | $colorIndex = (count($this->colors) - 1) * ($value - $this->min) / ($this->max - $this->min); |
| 108: | |
| 109: | $color = $this->interpolateColor( |
| 110: | $this->colors[floor($colorIndex)], |
| 111: | $this->colors[ceil($colorIndex)], |
| 112: | $colorIndex - floor($colorIndex) |
| 113: | ); |
| 114: | |
| 115: | return $color; |
| 116: | } |
| 117: | |
| 118: | protected function interpolateColor(string $hexFrom, string $hexTo, float $value): string |
| 119: | { |
| 120: | $hexFrom = ltrim($hexFrom, '#'); |
| 121: | $hexTo = ltrim($hexTo, '#'); |
| 122: | |
| 123: | $fromRgb = [ |
| 124: | 'r' => hexdec(substr($hexFrom, 0, 2)), |
| 125: | 'g' => hexdec(substr($hexFrom, 2, 2)), |
| 126: | 'b' => hexdec(substr($hexFrom, 4, 2)), |
| 127: | ]; |
| 128: | |
| 129: | $toRgb = [ |
| 130: | 'r' => hexdec(substr($hexTo, 0, 2)), |
| 131: | 'g' => hexdec(substr($hexTo, 2, 2)), |
| 132: | 'b' => hexdec(substr($hexTo, 4, 2)), |
| 133: | ]; |
| 134: | |
| 135: | $rgb = [ |
| 136: | 'r' => round($fromRgb['r'] + $value * ($toRgb['r'] - $fromRgb['r'])), |
| 137: | 'g' => round($fromRgb['g'] + $value * ($toRgb['g'] - $fromRgb['g'])), |
| 138: | 'b' => round($fromRgb['b'] + $value * ($toRgb['b'] - $fromRgb['b'])), |
| 139: | ]; |
| 140: | |
| 141: | return '#' . sprintf('%02x%02x%02x', $rgb['r'], $rgb['g'], $rgb['b']); |
| 142: | } |
| 143: | } |
| 144: | |