/** * Returns a cropped image * * @param GDImage_Image $img * @param smart_coordinate $left * @param smart_coordinate $top * @param smart_coordinate $width * @param smart_coordinate $height * @return GDImage_Image */ function execute($img, $left, $top, $width, $height) { $width = GDImage_Coordinate::fix($width, $img->getWidth(), $width); $height = GDImage_Coordinate::fix($height, $img->getHeight(), $height); $left = GDImage_Coordinate::fix($left, $img->getWidth(), $width); $top = GDImage_Coordinate::fix($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) { JError::raiseError(500, JText::_('JLIB_GDIMAGE_ERROR_CAN_NOT_CROP_OUTSIDE')); return false; } $new = $img->doCreate($width, $height); if ($img->isTransparent() || $img instanceof GDImage_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; }
/** * Prepares and corrects smart coordinates * * @param GDImage_Image $img * @param smart_coordinate $width * @param smart_coordinate $height * @param string $fit * @return array */ protected function prepareDimensions($img, $width, $height, $fit) { list($width, $height) = GDImage_Coordinate::fixForResize($img, $width, $height); if ($width === 0 || $height === 0) { return array('width' => 0, 'height' => 0); } if ($fit == null) { $fit = 'inside'; } $dim = array(); if ($fit == 'fill') { $dim['width'] = $width; $dim['height'] = $height; } elseif ($fit == 'inside' || $fit == 'outside') { $rx = $img->getWidth() / $width; $ry = $img->getHeight() / $height; if ($fit == 'inside') { $ratio = $rx > $ry ? $rx : $ry; } else { $ratio = $rx < $ry ? $rx : $ry; } $dim['width'] = round($img->getWidth() / $ratio); $dim['height'] = round($img->getHeight() / $ratio); } else { JError::raiseError(500, JText::sprintf('JLIB_GDIMAGE_ERROR_INVALID_FIT', $fit)); return false; } return $dim; }
/** * Writes text to the image's canvas * * @param GDImage_Image $img * @param smart_coordinate $left * @param smart_coordinate $top * @param string $text * @param integer $angle * @return GDImage_Image */ function writeText($image, $x, $y, $text, $angle = 0) { if ($image->isTrueColor()) { $image->alphaBlending(true); } $box = imageftbbox($this->size, $angle, $this->face, $text); $obox = array('left' => min($box[0], $box[2], $box[4], $box[6]), 'top' => min($box[1], $box[3], $box[5], $box[7]), 'right' => max($box[0], $box[2], $box[4], $box[6]) - 1, 'bottom' => max($box[1], $box[3], $box[5], $box[7]) - 1); $obox['width'] = abs($obox['left']) + abs($obox['right']); $obox['height'] = abs($obox['top']) + abs($obox['bottom']); $x = GDImage_Coordinate::fix($x, $image->getWidth(), $obox['width']); $y = GDImage_Coordinate::fix($y, $image->getHeight(), $obox['height']); $fixed_x = $x - $obox['left']; $fixed_y = $y - $obox['top']; imagettftext($image->getHandle(), $this->size, $angle, $fixed_x, $fixed_y, $this->color, $this->face, $text); }
/** * Returns a merged image * * @param GDImage_Image $base * @param GDImage_Image $overlay * @param smart_coordinate $left * @param smart_coordinate $top * @param numeric $pct * @return GDImage_Image */ function execute($base, $overlay, $left, $top, $pct) { $x = GDImage_Coordinate::fix($left, $base->getWidth(), $overlay->getWidth()); $y = GDImage_Coordinate::fix($top, $base->getHeight(), $overlay->getHeight()); $result = $base->asTrueColor(); $result->alphaBlending(true); $result->saveAlpha(true); if ($pct <= 0) { return $result; } if ($pct < 100) { imagecopymerge($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight(), $pct); } else { imagecopy($result->getHandle(), $overlay->getHandle(), $x, $y, 0, 0, $overlay->getWidth(), $overlay->getHeight()); } return $result; }