/** * {@inheritdoc} */ public final function getColor(PointInterface $position) { $l = $this->getDistance($position); if ($l >= $this->length) { return $this->end; } if ($l < 0) { return $this->start; } return $this->start->getPalette()->blend($this->start, $this->end, $l / $this->length); }
/** * {@inheritdoc} */ public function create(BoxInterface $size, ColorInterface $color = null) { $width = $size->getWidth(); $height = $size->getHeight(); $palette = null !== $color ? $color->getPalette() : new RGB(); $color = null !== $color ? $color : $palette->color('fff'); try { $gmagick = new \Gmagick(); // Gmagick does not support creation of CMYK GmagickPixel // see https://bugs.php.net/bug.php?id=64466 if ($color instanceof CMYKColor) { $switchPalette = $palette; $palette = new RGB(); $pixel = new \GmagickPixel($palette->color((string) $color)); } else { $switchPalette = null; $pixel = new \GmagickPixel((string) $color); } if ($color->getPalette()->supportsAlpha() && $color->getAlpha() < 100) { throw new NotSupportedException('alpha transparency is not supported'); } $gmagick->newimage($width, $height, $pixel->getcolor(false)); $gmagick->setimagecolorspace(\Gmagick::COLORSPACE_TRANSPARENT); $gmagick->setimagebackgroundcolor($pixel); $image = new Image($gmagick, $palette, new MetadataBag()); if ($switchPalette) { $image->usePalette($switchPalette); } return $image; } catch (\GmagickException $e) { throw new RuntimeException('Could not create empty image', $e->getCode(), $e); } }
/** * {@inheritdoc} */ public function create(BoxInterface $size, ColorInterface $color = null) { $width = $size->getWidth(); $height = $size->getHeight(); $resource = imagecreatetruecolor($width, $height); if (false === $resource) { throw new RuntimeException('Create operation failed'); } $palette = null !== $color ? $color->getPalette() : new RGB(); $color = $color ? $color : $palette->color('fff'); if (!$color instanceof RGBColor) { throw new InvalidArgumentException('GD driver only supports RGB colors'); } $index = imagecolorallocatealpha($resource, $color->getRed(), $color->getGreen(), $color->getBlue(), round(127 * $color->getAlpha() / 100)); if (false === $index) { throw new RuntimeException('Unable to allocate color'); } if (false === imagefill($resource, 0, 0, $index)) { throw new RuntimeException('Could not set background color fill'); } if ($color->getAlpha() >= 95) { imagecolortransparent($resource, $index); } return $this->wrap($resource, $palette); }
/** * {@inheritdoc} */ public function create(BoxInterface $size, ColorInterface $color = null) { $width = $size->getWidth(); $height = $size->getHeight(); $palette = null !== $color ? $color->getPalette() : new RGB(); $color = null !== $color ? $color : $palette->color('fff'); try { $pixel = new \ImagickPixel((string) $color); $pixel->setColorValue(\Imagick::COLOR_ALPHA, number_format(round($color->getAlpha() / 100, 2), 1)); $imagick = new \Imagick(); $imagick->newImage($width, $height, $pixel); $imagick->setImageMatte(true); $imagick->setImageBackgroundColor($pixel); $pixel->clear(); $pixel->destroy(); return new Image($imagick, $palette, new MetadataBag()); } catch (\ImagickException $e) { throw new RuntimeException('Could not create empty image', $e->getCode(), $e); } }
/** * {@inheritdoc} */ public function create(BoxInterface $size, ColorInterface $color = null) { $width = $size->getWidth(); $height = $size->getHeight(); $palette = null !== $color ? $color->getPalette() : new RGB(); $color = null !== $color ? $color : $palette->color('fff'); try { $pixel = new \ImagickPixel((string) $color); $pixel->setColorValue(Imagick::COLOR_ALPHA, $color->getAlpha() / 100); $imagick = new Imagick(); $imagick->newImage($width, $height, $pixel); $imagick->setImageMatte(true); $imagick->setImageBackgroundColor($pixel); if (version_compare('6.3.1', $this->getVersion($imagick)) < 0 && version_compare('7.0', $this->getVersion($imagick)) > 0) { $imagick->setImageOpacity($pixel->getColorValue(Imagick::COLOR_ALPHA)); } $pixel->clear(); $pixel->destroy(); return new Image($imagick, $palette, new MetadataBag()); } catch (\ImagickException $e) { throw new RuntimeException('Could not create empty image', $e->getCode(), $e); } }