/** * Returns rotated image * * @param WideImage_Image $image * @param numeric $angle * @param int $bgColor * @param bool $ignoreTransparent * @return WideImage_Image */ function execute($image, $angle, $bgColor, $ignoreTransparent) { $angle = -floatval($angle); if ($angle < 0) { $angle = 360 + $angle; } $angle = $angle % 360; if ($angle == 0) { return $image->copy(); } if ($bgColor === null) { if ($image->isTransparent()) { $bgColor = $image->getTransparentColor(); } else { $tc = array('red' => 255, 'green' => 255, 'blue' => 255, 'alpha' => 127); if ($image->isTrueColor()) { $bgColor = $image->getExactColorAlpha($tc); if ($bgColor == -1) { $bgColor = $image->allocateColorAlpha($tc); } } else { $bgColor = $image->getExactColor($tc); if ($bgColor == -1) { $bgColor = $image->allocateColor($tc); } } } } return new WideImage_TrueColorImage(imagerotate($image->getHandle(), $angle, $bgColor, $ignoreTransparent)); }
/** * Returns a cropped image * * @param WideImage_Image $img * @param smart_coordinate $left * @param smart_coordinate $top * @param smart_coordinate $width * @param smart_coordinate $height * @return WideImage_Image */ function execute($img, $left, $top, $width, $height) { $width = WideImage_Coordinate::fix($width, $img->getWidth(), $width); $height = WideImage_Coordinate::fix($height, $img->getHeight(), $height); $left = WideImage_Coordinate::fix($left, $img->getWidth(), $width); $top = WideImage_Coordinate::fix($top, $img->getHeight(), $height); if ($left < 0) { $width = $left + $width; $left = 0; } if ($width > $img->getWidth() - $left) { $width = $img->getWidth() - $left; } if ($top < 0) { $height = $top + $height; $top = 0; } if ($height > $img->getHeight() - $top) { $height = $img->getHeight() - $top; } if ($width <= 0 || $height <= 0) { throw new WideImage_Exception("Can't crop outside of an image."); } $new = $img->doCreate($width, $height); if ($img->isTransparent() || $img instanceof WideImage_PaletteImage) { $new->copyTransparencyFrom($img); imagecopyresized($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height); } else { $new->alphaBlending(false); $new->saveAlpha(true); imagecopyresampled($new->getHandle(), $img->getHandle(), 0, 0, $left, $top, $width, $height, $width, $height); } return $new; }
/** * Returns an image with a resized canvas * * The image is filled with $color. Use $scale to determine, when to resize. * * @param WideImage_Image $img * @param smart_coordinate $width * @param smart_coordinate $height * @param smart_coordinate $left * @param smart_coordinate $top * @param int $color * @param string $scale 'up', 'down', 'any' * @return WideImage_Image */ function execute($img, $width, $height, $left, $top, $color, $scale) { $new_width = WideImage_Coordinate::fix($width, $img->getWidth()); $new_height = WideImage_Coordinate::fix($width, $img->getHeight()); if ($scale == 'down') { $new_width = min($new_width, $img->getWidth()); $new_height = min($new_height, $img->getHeight()); } elseif ($scale == 'up') { $new_width = max($new_width, $img->getWidth()); $new_height = max($new_height, $img->getHeight()); } $new = WideImage::createTrueColorImage($new_width, $new_height); if ($img->isTrueColor()) { if ($color === null) { $color = $new->allocateColorAlpha(0, 0, 0, 127); } } else { imagepalettecopy($new->getHandle(), $img->getHandle()); if ($color === null) { if ($img->isTransparent()) { $new->copyTransparencyFrom($img); $tc_rgb = $img->getTransparentColorRGB(); $color = $new->allocateColorAlpha($tc_rgb); } else { $color = $new->allocateColorAlpha(255, 0, 127, 127); } imagecolortransparent($new->getHandle(), $color); } } $new->fill(0, 0, $color); $x = WideImage_Coordinate::fix($left, $new->getWidth(), $img->getWidth()); $y = WideImage_Coordinate::fix($top, $new->getHeight(), $img->getHeight()); $img->copyTo($new, $x, $y); return $new; }
/** * Returns an image with a resized canvas * * The image is filled with $color. Use $scale to determine, when to resize. * * @param WideImage_Image $img * @param smart_coordinate $width * @param smart_coordinate $height * @param smart_coordinate $left * @param smart_coordinate $top * @param int $color * @param string $scale 'up', 'down', 'any' * @param boolean $merge * @return WideImage_Image */ function execute($img, $width, $height, $left, $top, $color, $scale, $merge) { $new_width = WideImage_Coordinate::fix($width, $img->getWidth()); $new_height = WideImage_Coordinate::fix($height, $img->getHeight()); if ($scale == 'down') { $new_width = min($new_width, $img->getWidth()); $new_height = min($new_height, $img->getHeight()); } elseif ($scale == 'up') { $new_width = max($new_width, $img->getWidth()); $new_height = max($new_height, $img->getHeight()); } $new = WideImage::createTrueColorImage($new_width, $new_height); if ($img->isTrueColor()) { if ($color === null) { $color = $new->allocateColorAlpha(0, 0, 0, 127); } } else { imagepalettecopy($new->getHandle(), $img->getHandle()); if ($img->isTransparent()) { $new->copyTransparencyFrom($img); $tc_rgb = $img->getTransparentColorRGB(); $t_color = $new->allocateColorAlpha($tc_rgb); } if ($color === null) { if ($img->isTransparent()) { $color = $t_color; } else { $color = $new->allocateColorAlpha(255, 0, 127, 127); } imagecolortransparent($new->getHandle(), $color); } } $new->fill(0, 0, $color); $x = WideImage_Coordinate::fix($left, $new->getWidth(), $img->getWidth()); $y = WideImage_Coordinate::fix($top, $new->getHeight(), $img->getHeight()); // blending for truecolor images if ($img->isTrueColor()) { $new->alphaBlending($merge); } // not-blending for palette images if (!$merge && !$img->isTrueColor() && isset($t_color)) { $new->getCanvas()->filledRectangle($x, $y, $x + $img->getWidth(), $y + $img->getHeight(), $t_color); } $img->copyTo($new, $x, $y); return $new; }
/** * Returns a greyscale copy of an image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $palette = $image instanceof WideImage_PaletteImage; $transparent = $image->isTransparent(); if ($palette && $transparent) { $tci = $image->getTransparentColor(); } $new = $image->asTrueColor(); imagefilter($new->getHandle(), IMG_FILTER_GRAYSCALE); if ($palette) { $new = $new->asPalette(); if ($transparent) { $new->setTransparentColor($tci); } } return $new; }
/** * Returns a greyscale copy of an image * * @param WideImage_Image $image * @return WideImage_Image */ function execute($image) { $palette = !$image->isTrueColor(); $transparent = $image->isTransparent(); if ($palette && $transparent) { $tcrgb = $image->getTransparentColorRGB(); } $new = $image->asTrueColor(); if (!imagefilter($new->getHandle(), IMG_FILTER_NEGATE)) { throw new WideImage_GDFunctionResultException("imagefilter() returned false"); } if ($palette) { $new = $new->asPalette(); if ($transparent) { $irgb = array('red' => 255 - $tcrgb['red'], 'green' => 255 - $tcrgb['green'], 'blue' => 255 - $tcrgb['blue'], 'alpha' => 127); // needs imagecolorexactalpha instead of imagecolorexact, otherwise doesn't work on some transparent GIF images $new_tci = imagecolorexactalpha($new->getHandle(), $irgb['red'], $irgb['green'], $irgb['blue'], 127); $new->setTransparentColor($new_tci); } } return $new; }