The alignment takes {@link LabeledParagraph} instances and aligns the texts
next to the labels so that all texts start at the same offset. Pass the
paragraphs that you want to align to {@link add()}. When you call
{@link align()}, the text offset is calculated. You can retrieve the
calculated offset with {@link getTextOffset()}.
public function testRenderWithAlignmentIgnoresIfTextOffsetToSmall()
{
$alignment = new LabelAlignment();
$alignment->setTextOffset(5);
$para = new LabeledParagraph('Label', 'Text');
$para->setAlignment($alignment);
$para->render($this->io);
$this->assertSame("Label Text\n", $this->io->fetchOutput());
}
/**
* Renders all elements in the layout.
*
* @param IO $io The I/O.
* @param int $indentation The number of spaces to indent.
*/
public function render(IO $io, $indentation = 0)
{
$this->alignment->align($io, $indentation);
foreach ($this->elements as $i => $element) {
$element->render($io, $this->indentations[$i] + $indentation);
}
$this->elements = array();
}
/**
* Renders the paragraph.
*
* @param IO $io The I/O.
* @param int $indentation The number of spaces to indent.
*/
public function render(IO $io, $indentation = 0)
{
$linePrefix = str_repeat(' ', $indentation);
$visibleLabel = $io->removeFormat($this->label);
$styleTagLength = strlen($this->label) - strlen($visibleLabel);
$textOffset = $this->aligned && $this->alignment ? $this->alignment->getTextOffset() - $indentation : 0;
$textOffset = max($textOffset, strlen($visibleLabel) + $this->padding);
$textPrefix = str_repeat(' ', $textOffset);
// 1 trailing space
$textWidth = $io->getTerminalDimensions()->getWidth() - 1 - $textOffset - $indentation;
// TODO replace wordwrap() by implementation that is aware of format codes
$text = str_replace("\n", "\n" . $linePrefix . $textPrefix, wordwrap($this->text, $textWidth));
// Add the total length of the style tags ("<b>", ...)
$labelWidth = $textOffset + $styleTagLength;
$io->write(rtrim(sprintf("%s%-{$labelWidth}s%s", $linePrefix, $this->label, rtrim($text))) . "\n");
}