PHP Font::getSize方法代码示例

 public function getWidth($text, Font $font)
 {
     $box = imagettfbbox($font->getSize(), 0, $font->getPath(), $text);
     return round(abs($box[2] - $box[0]), 1);
 }

	private function drawChunksWrapped ($canvas, $baseline, $left, $right, $chunks, Font $font) {
		global $config;

		$baselineStart = $baseline;
		$maxWidth = $right - $left;
		$textHeight = $font->getHeight();
		$textLeading = $textHeight * $font->leadingPercent;
		$symbolHeight = $textHeight * ($config['card.text.symbol.height.percentage'] / 100);
		$symbolSpacing = $config['card.text.symbol.spacing'];
		$belowBaseline = 0;
		$xOffset = 0;
		$belowBaseline = 0;
		for ($i=0, $n=count($chunks); $i < $n; $i++) {
			$chunk = $chunks[$i];
			if ($chunk->isSymbol) {
				$xOffset += $symbolSpacing;
				// Wrap if this symbol and any following symbols or non-whitespace text are too long.
				$nonWrappedChunksWidth = 0;
				for ($ii=$i; $ii < $n; $ii++) {
					$nextChunk = $chunks[$ii];
					if ($nextChunk->isSymbol) {
						// Don't wrap in between symbols.
						list($symbolWidth) = $this->drawSymbol(null, 0, 0, $symbolHeight, $nextChunk->value, false, true);
						$nonWrappedChunksWidth += $symbolSpacing + $symbolWidth;
						if ($ii < $n - 1) $nonWrappedChunksWidth += $symbolSpacing; // Don't add spacing if this is the last chunk.
					} else {
						// Don't wrap in between a symbol and text (eg, when a period follows a symbol).
						if (preg_match('/^([^\w]*)\w/', $nextChunk->value, $matches)) {
							// Text starts with non-whitespace characters. Get their width.
							$textSize = $font->getSize($matches[0], $nextChunk->isItalic);
							$nonWrappedChunksWidth += $textSize['width'];
						}
						break;
					}
				}
				if ($xOffset + $nonWrappedChunksWidth > $maxWidth) {
					$xOffset = 0;
					$belowBaseline = 0;
					$baseline += $textLeading;
				}
				// Draw symbol.
				$symbolTop = $baseline - $symbolHeight + 1 + (($symbolHeight - $textHeight) / 2);
				list($symbolWidth) = $this->drawSymbol($canvas, $symbolTop, $left + $xOffset, $symbolHeight, $chunk->value, false, true, $font->getColor());
				$xOffset += $symbolWidth;
				if ($i < $n - 1) $xOffset += $symbolSpacing; // Don't add spacing if this is the last chunk.
			} else {
				if ($chunk->newLine) {
					$xOffset = 0;
					$belowBaseline = 0;
					// If there last chunk was a newline with no text, then this newline is the second one in a row. Reduce the leading on the second one.
					$previousChunk = @$chunks[$i - 1];
					if ($previousChunk && $previousChunk->newLine && $previousChunk->value == null)
						$baseline += $textLeading * ($config['card.text.double.spacing'] / 100);
					else
						$baseline += $textLeading;
					if ($chunk->value == null) continue;
				}
				$spaceSize = $font->getSize(' ', $chunk->isItalic);
				$spaceWidth = $spaceSize['width'];
				if (substr($chunk->value, 0, 1) == ' ') $xOffset += $spaceWidth; // Starts with space.
				// Break text into words and build an array of lines.
				$words = explode(' ', $chunk->value);
				$lines = array();
				$text = '';
				//$wordN = 0;
				foreach ($words as $word) {
					//$wordN++;
					if ($word == null || $word == '') continue;
					$testLine = $text;
					if ($text != '') $testLine .= ' '; // Space between words.
					$testLine .= $word;
					$lineSize = $font->getSize($testLine, $chunk->isItalic);
					if (count($lines) == 0) $lineSize['width'] += $xOffset; // Only the first line takes into account the xOffset.
					if ($lineSize['width'] > $maxWidth) {

						// Check if after a comma only one word was added.
						// If the codition was true then remove the previous word, start a new line and put the previous word plus current one.
						/*$prevWordLen = @strlen($words[$wordN-2]);
						if(substr($text, -$prevWordLen-2, 1) == ','){
							$text = substr($text, 0, -$prevWordLen-1);
							$lineSize = $font->getSize($text, $chunk->isItalic);
							$lineSize['text'] = $text;
							$lines[] = $lineSize;
							$text = $words[$wordN-2] .' '. $word;
							continue;
						}*/

						// Word doesn't fit, start a new line.
						$lineSize['text'] = $text;
						$lines[] = $lineSize;
						$text = $word;
					} else
						$text = $testLine; // Word fits, collect more.
				}
				// Store last line.
				$lineSize = $font->getSize($text, $chunk->isItalic);
				$lineSize['text'] = $text;
				$lines[] = $lineSize;
				$belowBaseline = max($belowBaseline, $lineSize['belowBasepoint']);
				// Write each line.
//.........这里部分代码省略.........