/**
* String to multiple lines
*
* @param string $string
* @param Font $font
* @param int $maxWidth
* @return array
*/
public function stringToMultipleLines($string, Font $font, $maxWidth)
{
$fontBox = $font->box('我');
$maxWidth = $maxWidth - $fontBox->getWidth();
preg_match_all('/./u', $string, $words);
$words = $words[0];
$lines = [];
$width = 0;
$offset = 0;
foreach ($words as $word) {
if ($this->isSbcCaseCharacter($word)) {
$wordWidth = $fontBox->getWidth();
} else {
try {
$wordWidth = $font->box($word)->getWidth();
} catch (\Imagine\Exception\InvalidArgumentException $e) {
$wordWidth = $fontBox->getWidth();
}
}
if ($width + $wordWidth > $maxWidth) {
$width = $wordWidth;
$offset++;
} else {
$width += $wordWidth;
}
if (!isset($lines[$offset])) {
$lines[$offset] = '';
}
$lines[$offset] .= $word;
}
return $lines;
}
/**
* Adds the text to the image.
*/
public function renderText()
{
$palette = new RGB();
$color = $palette->color('#005', 100);
$font = new Font(dirname(__FILE__) . '/../assets/trebuchet_bi.ttf', 24, $color);
$blocks = explode('__', $this->text);
$wordWidths = array();
foreach ($blocks as $key => $block) {
$blocks[$key] = preg_split('#[^a-z0-9,:\'\\.-]#i', trim($block));
foreach ($blocks[$key] as $word) {
$wordWidths[] = $font->box($word)->getWidth();
}
}
$lineHeight = 45;
$maxRatio = 0;
$result = array();
$space = $font->box('-')->getWidth();
$stepWidth = 25;
for ($maxWidth = floor(max($wordWidths) / $stepWidth) * $stepWidth; $maxWidth <= 375; $maxWidth += $stepWidth) {
$wordIndex = 0;
$lines = array();
$maxLineWidth = 0;
foreach ($blocks as $block) {
$lines[] = '';
$lineWidth = 0;
foreach ($block as $word) {
if ($lineWidth + $wordWidths[$wordIndex] > $maxWidth && $lines[count($lines) - 1] != '') {
$lines[] = '';
$lineWidth = 0;
}
$lines[count($lines) - 1] .= $word . ' ';
$lineWidth += $wordWidths[$wordIndex] + $space;
if ($lineWidth - $space > $maxLineWidth) {
$maxLineWidth = $lineWidth - $space;
}
++$wordIndex;
}
}
$min = min(count($lines) * $lineHeight, $maxLineWidth);
$max = max(count($lines) * $lineHeight, $maxLineWidth);
$ratio = $min / $max;
if ($ratio > $maxRatio) {
$result = $lines;
$maxRatio = $ratio;
}
}
$y = $this->image->getSize()->getHeight() / 2 - $lineHeight * (count($result) / 2) + 4;
foreach ($result as $line) {
$box = $font->box(trim($line));
$this->image->draw()->text(trim($line), $font, new Point($this->image->getSize()->getWidth() / 2 - $box->getWidth() / 2, $y));
$y += $lineHeight;
}
}