/**
* Applies scheduled transformation to ImageInterface instance
* Returns processed ImageInterface instance
*
* @param \Imagine\Image\ImageInterface $image
*
* @return \Imagine\Image\ImageInterface
*/
function apply(ImageInterface $image)
{
// We reduce the usage of methods on the image to dramatically increase the performance of this algorithm.
// Really... We need that performance...
// Therefore we first build a matrix, that holds the colors of the image.
$width = $image->getSize()->getWidth();
$height = $image->getSize()->getHeight();
$byteData = new Matrix($width, $height);
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$byteData->setElementAt($x, $y, $image->getColorAt(new Point($x, $y)));
}
}
$dHeight = (int) floor(($this->matrix->getHeight() - 1) / 2);
$dWidth = (int) floor(($this->matrix->getWidth() - 1) / 2);
for ($y = $dHeight; $y < $height - $dHeight; $y++) {
for ($x = $dWidth; $x < $width - $dWidth; $x++) {
$sumRed = 0;
$sumGreen = 0;
$sumBlue = 0;
// calculate new color
for ($boxX = $x - $dWidth, $matrixX = 0; $boxX <= $x + $dWidth; $boxX++, $matrixX++) {
for ($boxY = $y - $dHeight, $matrixY = 0; $boxY <= $y + $dHeight; $boxY++, $matrixY++) {
$sumRed = $sumRed + $this->matrix->getElementAt($matrixX, $matrixY) * $byteData->getElementAt($boxX, $boxY)->getRed();
$sumGreen = $sumGreen + $this->matrix->getElementAt($matrixX, $matrixY) * $byteData->getElementAt($boxX, $boxY)->getGreen();
$sumBlue = $sumBlue + $this->matrix->getElementAt($matrixX, $matrixY) * $byteData->getElementAt($boxX, $boxY)->getBlue();
}
}
// set new color - has to be between 0 and 255!
$image->draw()->dot(new Point($x, $y), new Color(array('red' => max(0, min(255, $sumRed)), 'green' => max(0, min(255, $sumGreen)), 'blue' => max(0, min(255, $sumBlue)))));
}
}
return $image;
}
/**
* Write text on an image
*
* @param $text
* @param $x
* @param $y
* @param int $angle
*
* @return null
* @throws Exception
*/
public function writeText($text, $x, $y, $angle = 0)
{
if (empty($this->_font)) {
throw new Exception(Craft::t("No font properties have been set. Call Image::setFontProperties() first."));
}
$point = new \Imagine\Image\Point($x, $y);
$this->_image->draw()->text($text, $this->_font, $point, $angle);
}
/**
* {@inheritdoc}
*/
public function apply(ImageInterface $image)
{
$size = $image->getSize();
$width = $size->getWidth();
$height = $size->getHeight();
$draw = $image->draw();
// Draw top and bottom lines
$draw->line(new Point(0, 0), new Point($width - 1, 0), $this->color, $this->height)->line(new Point($width - 1, $height - 1), new Point(0, $height - 1), $this->color, $this->height);
// Draw sides
$draw->line(new Point(0, 0), new Point(0, $height - 1), $this->color, $this->width)->line(new Point($width - 1, 0), new Point($width - 1, $height - 1), $this->color, $this->width);
return $image;
}
/**
* Draws a text string on an existing image.
* @param string $text the text to write to the image
* @param string $fontFile the file path or path alias
* @param array $start the starting position of the text. This must be an array with two elements representing `x` and `y` coordinates.
* @param array $fontOptions the font options. The following options may be specified:
*
* - color: The font color. Defaults to "fff".
* - size: The font size. Defaults to 12.
* - angle: The angle to use to write the text. Defaults to 0.
*
* @return static
* @throws InvalidParamException if `$fontOptions` is invalid
*/
public function text($text, $fontFile, array $start = [0, 0], array $fontOptions = [])
{
if (!isset($start[0], $start[1])) {
throw new InvalidParamException('$start must be an array of two elements.');
}
$fontSize = ArrayHelper::getValue($fontOptions, 'size', 12);
$fontColor = ArrayHelper::getValue($fontOptions, 'color', 'fff');
$fontAngle = ArrayHelper::getValue($fontOptions, 'angle', 0);
$font = static::getImagine()->font(Yii::getAlias($fontFile), $fontSize, new Color($fontColor));
$this->image->draw()->text($text, $font, new Point($start[0], $start[1]), $fontAngle);
return $this;
}
/**
* Draw centered text in current image
*
* @param string $text
* @param string $color
*
* @return void
*/
protected function drawCenteredText($text, $color)
{
$width = $this->image->getSize()->getWidth();
$height = $this->image->getSize()->getHeight();
$fontColor = $this->image->palette()->color('#' . $color);
$fontSize = 48;
$widthFactor = $width > 160 ? 0.8 : 0.9;
$heightFactor = $height > 160 ? 0.8 : 0.9;
do {
$font = $this->getImagineService()->font(__DIR__ . '/../../../data/font/Roboto-Regular.ttf', $fontSize, $fontColor);
$fontBox = $font->box($text);
$fontSize = round($fontSize * 0.8);
} while ($fontSize > 5 && ($width * $widthFactor < $fontBox->getWidth() || $height * $heightFactor < $fontBox->getHeight()));
$pointX = max(0, floor(($width - $fontBox->getWidth()) / 2));
$pointY = max(0, floor(($height - $fontBox->getHeight()) / 2));
$this->image->draw()->text($text, $font, new Point($pointX, $pointY));
}
/**
* @see Liip\ImagineBundle\Imagine\Filter\Loader\LoaderInterface::load()
*/
public function load(ImageInterface $image, array $options = array())
{
$size = $image->getSize();
$width = $size->getWidth();
$height = $size->getHeight();
$alpha = $options['opacity'];
for ($x = 0; $x < $width; $x++) {
for ($y = 0; $y < $height; $y++) {
$point = new Point($x, $y);
$color = $image->getColorAt($point);
$dR = $color->getRed();
$dG = $color->getGreen();
$dB = $color->getBlue();
$image->draw()->dot($point, new Color(array($dR, $dG, $dB), $alpha));
}
}
return $image;
}
private function richDrawText($text, ImageInterface $image, $wordSpacing, ImagineFont $font, Point $point)
{
$words = preg_split('/\\s+/', $text);
$wordSpacing = $wordSpacing + $this->getWidthOfSpaceChar($font);
foreach ($words as $word) {
if ($word !== '') {
$box = $font->box($word);
$image->draw()->text($word, $font, $point);
$point = new Point($point->getX() + $box->getWidth() + $wordSpacing, $point->getY());
}
}
}
/**
* Draws a text string on an existing image.
* @param Imagine\Image\ImageInterface $Image the image
* @param string $text the text to write to the image
* @param string $fontFile the file path or path alias
* @param array $start the starting position of the text. This must be an array with two elements representing `x` and `y` coordinates.
* @param array $fontOptions the font options. The following options may be specified:
*
* - color: The font color. Defaults to "fff".
* - size: The font size. Defaults to 12.
* - angle: The angle to use to write the text. Defaults to 0.
*
* @return \Imagine\Image\ImageInterface
* @throws \yii\base\InvalidParamException if `$fontOptions` is invalid
*/
public static function text($Image, $text, $fontFile, array $start = [0, 0], array $fontOptions = [])
{
if (!isset($start[0], $start[1])) {
throw new \yii\base\InvalidParamException('$start must be an array of two elements.');
}
$fontSize = ArrayHelper::getValue($fontOptions, 'size', 12);
$fontColor = ArrayHelper::getValue($fontOptions, 'color', '#ffffff');
$fontAngle = ArrayHelper::getValue($fontOptions, 'angle', 0);
$Palette = new Imagine\Image\Palette\RGB();
/** @var Imagine\Image\AbstractFont $font */
$font = static::getImagine()->font(\Yii::getAlias($fontFile), $fontSize, $Palette->color($fontColor));
$Image->draw()->text($text, $font, new Imagine\Image\Point($start[0], $start[1]), $fontAngle);
return $Image;
}
/**
* @param \Imagine\Image\ImageInterface $image
* @param array $commandOptions
* @return \Imagine\Image\ImageInterface
*/
protected function drawCommand(\Imagine\Image\ImageInterface $image, array $commandOptions)
{
$drawer = $image->draw();
foreach ($commandOptions as $drawCommandName => $drawCommandOptions) {
if ($drawCommandName === 'ellipse') {
$drawer = $this->drawEllipse($drawer, $drawCommandOptions);
} elseif ($drawCommandName === 'text') {
$drawer = $this->drawText($drawer, $drawCommandOptions);
} else {
throw new \InvalidArgumentException('Invalid draw command "' . $drawCommandName . '"', 1316613593);
}
}
return $image;
}
