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php-e107/e107_handlers/phpthumb/thumb_plugins/gd_watermarkttf.inc.php

452 lines
22 KiB
PHP

<?php
/**
* GD Watermark Lib Plugin Definition File
*
* This file contains the plugin definition for GD Watermark
* Usage:
* <?php
* require_once 'path/to/ThumbLib.inc.php';
* $pic = PhpThumbFactory::create('path/to/pic/destination');
* $watermark = PhpThumbFactory::create('path/to/watermark/destination');
*
* //overlays the $pic-image with the $watermark-image on the right bottom corner, no offset
* $pic->addWatermark($watermark, 'rightBottom', 50, 0, 0);
* $pic->show(); //or $pic->save('path/to/new/pic/destination');
* ?>
*
* PHP Version 5 with GD 2.0+
* PhpThumb : PHP Thumb Library <http://phpthumb.gxdlabs.com>
* Copyright (c) 2009, Ian Selby/Gen X Design
*
* Author(s): Ian Selby <ian@gen-x-design.com>
*
* Licensed under the MIT License
* Redistributions of files must retain the above copyright notice.
*
* @author Cameron @ e107inc
* @copyright e107 Inc.
* @link http://www.e107.org
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
* @version 1.0
* @package PhpThumb
* @filesource
*/
/**
* GD Watermark Lib Plugin
*
* Overlays an image with another image to create a watermark-effect
*
* @package PhpThumb
* @subpackage Plugins
*/
class GdWatermarkTTF
{
protected $parentInstance;
protected $currentDimensions;
protected $workingImage;
protected $newImage;
protected $options;
protected $parms;
private function DebugMessage($val)
{
// echo $val."<br />";
}
private function shadow_text($im, $size, $angle, $x, $y, $font, $text,$opacity=100)
{
$col = $this->hex2rgb($this->parms['color']);
$scol = $this->hex2rgb($this->parms['shadowcolor']);
$shadowcolor = imagecolorallocatealpha($im, $scol[0], $scol[1], $scol[2], $opacity);
$white = imagecolorallocatealpha($im, $col[0], $col[1], $col[2], $opacity);
// imagefilter($shadowcolor, IMG_FILTER_GAUSSIAN_BLUR);
imagefilter($shadowcolor, IMG_FILTER_SELECTIVE_BLUR);
imagettftext($im, $size, 0, $x + 1, $y + 1, $shadowcolor, $font, $text);
imagettftext($im, $size, 0, $x -1, $y + 1, $shadowcolor, $font, $text);
imagettftext($im, $size, 0, $x + 0, $y + 0, $white, $font, $text);
}
private function hex2rgb($hex) {
$hex = str_replace("#", "", $hex);
if(strlen($hex) == 3) {
$r = hexdec(substr($hex,0,1).substr($hex,0,1));
$g = hexdec(substr($hex,1,1).substr($hex,1,1));
$b = hexdec(substr($hex,2,1).substr($hex,2,1));
} else {
$r = hexdec(substr($hex,0,2));
$g = hexdec(substr($hex,2,2));
$b = hexdec(substr($hex,4,2));
}
$rgb = array($r, $g, $b);
//return implode(",", $rgb); // returns the rgb values separated by commas
return $rgb; // returns an array with the rgb values
}
// Taken from http://phpthumb.sourceforge.net/index.php?source=phpthumb.filters.php
// public function WatermarkText($text, $size=12, $alignment='BR', $hex_color='000000', $ttffont='', $opacity=100, $margin=5, $angle=0, $bg_color=false, $bg_opacity=0, $fillextend='', &$that)
public function WatermarkText($parms, &$that)
{
$this->parms = $parms;
$text = $parms['text'];
$size = $parms['size'];
$alignment = $parms['pos'];
$hex_color = $parms['color'];
$ttffont = $parms['font'];
$opacity = (isset($parms['opacity'])) ? $parms['opacity'] : 100;
$margin = $parms['margin']; // 30; // (isset($parms[6])) ? $parms[6] : 25;
$angle = 0; // $parms['angle'];
$bg_color = false;
$bg_opacity = 0;
$fillextend = '';
$this->parentInstance = $that;
$this->currentDimensions = $this->parentInstance->getCurrentDimensions();
$this->workingImage = $this->parentInstance->getWorkingImage();
$this->newImage = $this->parentInstance->getOldImage();
$this->options = $this->parentInstance->getOptions();
$gdimg = $this->workingImage;
// text watermark requested
if (!$text) {
return false;
}
ImageAlphaBlending($gdimg, true);
if (preg_match('#^([0-9\\.\\-]*)x([0-9\\.\\-]*)(@[LCR])?$#i', $alignment, $matches)) {
$originOffsetX = intval($matches[1]);
$originOffsetY = intval($matches[2]);
$alignment = (@$matches[4] ? $matches[4] : 'L');
$margin = 0;
} else {
$originOffsetX = 0;
$originOffsetY = 0;
}
$metaTextArray = array(
'^Fb' => $this->phpThumbObject->getimagesizeinfo['filesize'],
'^Fk' => round($this->phpThumbObject->getimagesizeinfo['filesize'] / 1024),
'^Fm' => round($this->phpThumbObject->getimagesizeinfo['filesize'] / 1048576),
'^X' => $this->currentDimensions['width'], //$this->phpThumbObject->getimagesizeinfo[0],
'^Y' => $this->currentDimensions['height'], // $this->phpThumbObject->getimagesizeinfo[1],
'^x' => ImageSX($gdimg),
'^y' => ImageSY($gdimg),
'^^' => '^',
);
$this->DebugMessage("Margin: ".$margin);
$this->DebugMessage("Dimensions: ".$this->currentDimensions['width']." X ".$this->currentDimensions['height']);
$text = strtr($text, $metaTextArray);
$text = str_replace("\r\n", "\n", $text);
$text = str_replace("\r", "\n", $text);
$textlines = explode("\n", $text);
$this->DebugMessage('Processing '.count($textlines).' lines of text', __FILE__, __LINE__);
if (@is_readable($ttffont) && is_file($ttffont)) {
$opacity = 100 - intval(max(min($opacity, 100), 0));
// $letter_color_text = imagecolorallocate($gdimg,0,0,0);
$letter_color_text = imagecolorallocatealpha($gdimg,0,0,0,$opacity);
// $letter_color_text = ImageHexColorAllocate($gdimg, $hex_color, false, $opacity * 1.27);
$this->DebugMessage('Using TTF font "'.$ttffont.'"', __FILE__, __LINE__);
$TTFbox = ImageTTFbBox($size, $angle, $ttffont, $text);
$min_x = min($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
$max_x = max($TTFbox[0], $TTFbox[2], $TTFbox[4], $TTFbox[6]);
//$text_width = round($max_x - $min_x + ($size * 0.5));
$text_width = round($max_x - $min_x);
$min_y = min($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
$max_y = max($TTFbox[1], $TTFbox[3], $TTFbox[5], $TTFbox[7]);
//$text_height = round($max_y - $min_y + ($size * 0.5));
$text_height = round($max_y - $min_y);
$TTFboxChar = ImageTTFbBox($size, $angle, $ttffont, 'jH');
$char_min_y = min($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
$char_max_y = max($TTFboxChar[1], $TTFboxChar[3], $TTFboxChar[5], $TTFboxChar[7]);
$char_height = round($char_max_y - $char_min_y);
if ($alignment == '*') {
$text_origin_y = $char_height + $margin;
while (($text_origin_y - $text_height) < ImageSY($gdimg)) {
$text_origin_x = $margin;
while ($text_origin_x < ImageSX($gdimg)) {
ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
$text_origin_x += ($text_width + $margin);
}
$text_origin_y += ($text_height + $margin);
}
} else {
// this block for background color only
switch ($alignment) {
case '*':
// handled separately
break;
case 'T':
$text_origin_x = ($originOffsetX ? $originOffsetX - round($text_width / 2) : round((ImageSX($gdimg) - $text_width) / 2));
$text_origin_y = $char_height + $margin + $originOffsetY;
break;
case 'B':
$text_origin_x = ($originOffsetX ? $originOffsetX - round($text_width / 2) : round((ImageSX($gdimg) - $text_width) / 2));
$text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin + $originOffsetY;
break;
case 'L':
$text_origin_x = $margin + $originOffsetX;
$text_origin_y = ($originOffsetY ? $originOffsetY : round((ImageSY($gdimg) - $text_height) / 2) + $char_height);
break;
case 'R':
$text_origin_x = ($originOffsetX ? $originOffsetX - $text_width : ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin);
$text_origin_y = ($originOffsetY ? $originOffsetY : round((ImageSY($gdimg) - $text_height) / 2) + $char_height);
break;
case 'C':
$text_origin_x = ($originOffsetX ? $originOffsetX - round($text_width / 2) : round((ImageSX($gdimg) - $text_width) / 2));
$text_origin_y = ($originOffsetY ? $originOffsetY : round((ImageSY($gdimg) - $text_height) / 2) + $char_height);
break;
case 'TL':
$text_origin_x = $margin + $originOffsetX;
$text_origin_y = $char_height + $margin + $originOffsetY;
break;
case 'TR':
$text_origin_x = ($originOffsetX ? $originOffsetX - $text_width : ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin);
$text_origin_y = $char_height + $margin + $originOffsetY;
break;
case 'BL':
$text_origin_x = $margin + $originOffsetX;
$text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin + $originOffsetY;
break;
case 'BR':
default:
$text_origin_x = ($originOffsetX ? $originOffsetX - $text_width : ImageSX($gdimg) - $text_width + $TTFbox[0] - $min_x + round($size * 0.25) - $margin);
$text_origin_y = ImageSY($gdimg) + $TTFbox[1] - $margin + $originOffsetY;
break;
}
//ImageRectangle($gdimg, $text_origin_x + $min_x, $text_origin_y + $TTFbox[1], $text_origin_x + $min_x + $text_width, $text_origin_y + $TTFbox[1] - $text_height, $letter_color_text);
/* if (phpthumb_functions::IsHexColor($bg_color)) {
$text_background_alpha = round(127 * ((100 - min(max(0, $bg_opacity), 100)) / 100));
$text_color_background = phpthumb_functions::ImageHexColorAllocate($gdimg, $bg_color, false, $text_background_alpha);
} else {
$text_color_background = phpthumb_functions::ImageHexColorAllocate($gdimg, 'FFFFFF', false, 127);
}
*/
$text_color_background = imagecolorallocatealpha($gdimg,0,0,0,0);
$x1 = $text_origin_x + $min_x;
$y1 = $text_origin_y + $TTFbox[1];
$x2 = $text_origin_x + $min_x + $text_width;
$y2 = $text_origin_y + $TTFbox[1] - $text_height;
$x_TL = preg_match('#x#i', $fillextend) ? 0 : min($x1, $x2);
$y_TL = preg_match('#y#i', $fillextend) ? 0 : min($y1, $y2);
$x_BR = preg_match('#x#i', $fillextend) ? ImageSX($gdimg) : max($x1, $x2);
$y_BR = preg_match('#y#i', $fillextend) ? ImageSY($gdimg) : max($y1, $y2);
//while ($y_BR > ImageSY($gdimg)) {
// $y_TL--;
// $y_BR--;
// $text_origin_y--;
//}
$this->DebugMessage('WatermarkText() calling ImageFilledRectangle($gdimg, '.$x_TL.', '.$y_TL.', '.$x_BR.', '.$y_BR.', $text_color_background)', __FILE__, __LINE__);
// ImageFilledRectangle($gdimg, $x_TL, $y_TL, $x_BR, $y_BR, $text_color_background);
// end block for background color only
$y_offset = 0;
foreach ($textlines as $dummy => $line) {
$TTFboxLine = ImageTTFbBox($size, $angle, $ttffont, $line);
$min_x_line = min($TTFboxLine[0], $TTFboxLine[2], $TTFboxLine[4], $TTFboxLine[6]);
$max_x_line = max($TTFboxLine[0], $TTFboxLine[2], $TTFboxLine[4], $TTFboxLine[6]);
//$text_width = round($max_x - $min_x + ($size * 0.5));
$text_width_line = round($max_x_line - $min_x_line);
$min_y_line = min($TTFboxLine[1], $TTFboxLine[3], $TTFboxLine[5], $TTFboxLine[7]);
$max_y_line = max($TTFboxLine[1], $TTFboxLine[3], $TTFboxLine[5], $TTFboxLine[7]);
//$text_height = round($max_y - $min_y + ($size * 0.5));
$text_height_line = round($max_y_line - $min_y_line);
switch ($alignment) {
// $text_origin_y set above, just re-set $text_origin_x here as needed
case 'L':
case 'TL':
case 'BL':
// no change neccesary
break;
case 'C':
case 'T':
case 'B':
$text_origin_x = ($originOffsetX ? $originOffsetX - round($text_width_line / 2) : round((ImageSX($gdimg) - $text_width_line) / 2));
break;
case 'R':
case 'TR':
case 'BR':
$text_origin_x = ($originOffsetX ? $originOffsetX - $text_width_line : ImageSX($gdimg) - $text_width_line + $TTFbox[0] - $min_x + round($size * 0.25) - $margin);
break;
}
//ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y, $letter_color_text, $ttffont, $text);
$this->DebugMessage('WatermarkText() calling ImageTTFtext($gdimg, '.$size.', '.$angle.', '.$text_origin_x.', '.($text_origin_y + $y_offset).', $letter_color_text, '.$ttffont.', '.$line.')', __FILE__, __LINE__);
$this->shadow_text($gdimg, $size, $angle, $text_origin_x, $text_origin_y + $y_offset, $ttffont, $line,$opacity);
// ImageTTFtext($gdimg, $size, $angle, $text_origin_x, $text_origin_y + $y_offset, $letter_color_text, $ttffont, $line);
$y_offset += $char_height;
}
}
return $that;
// return true;
} else { //TODO FIX and Test.
$size = min(5, max(1, $size));
$this->DebugMessage('Using built-in font (size='.$size.') for text watermark'.($ttffont ? ' because $ttffont !is_readable('.$ttffont.')' : ''), __FILE__, __LINE__);
$text_width = 0;
$text_height = 0;
foreach ($textlines as $dummy => $line) {
$text_width = max($text_width, ImageFontWidth($size) * strlen($line));
$text_height += ImageFontHeight($size);
}
if ($img_watermark = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
ImageAlphaBlending($img_watermark, false);
if (phpthumb_functions::IsHexColor($bg_color)) {
$text_background_alpha = round(127 * ((100 - min(max(0, $bg_opacity), 100)) / 100));
$text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, $bg_color, false, $text_background_alpha);
} else {
$text_color_background = phpthumb_functions::ImageHexColorAllocate($img_watermark, 'FFFFFF', false, 127);
}
$this->DebugMessage('WatermarkText() calling ImageFilledRectangle($img_watermark, 0, 0, '.ImageSX($img_watermark).', '.ImageSY($img_watermark).', $text_color_background)', __FILE__, __LINE__);
ImageFilledRectangle($img_watermark, 0, 0, ImageSX($img_watermark), ImageSY($img_watermark), $text_color_background);
if ($angle && function_exists('ImageRotate')) {
// using $img_watermark_mask is pointless if ImageRotate function isn't available
if ($img_watermark_mask = phpthumb_functions::ImageCreateFunction($text_width, $text_height)) {
$mask_color_background = ImageColorAllocate($img_watermark_mask, 0, 0, 0);
ImageAlphaBlending($img_watermark_mask, false);
ImageFilledRectangle($img_watermark_mask, 0, 0, ImageSX($img_watermark_mask), ImageSY($img_watermark_mask), $mask_color_background);
$mask_color_watermark = ImageColorAllocate($img_watermark_mask, 255, 255, 255);
}
}
$text_color_watermark = phpthumb_functions::ImageHexColorAllocate($img_watermark, $hex_color);
foreach ($textlines as $key => $line) {
switch ($alignment) {
case 'C':
$x_offset = round(($text_width - (ImageFontWidth($size) * strlen($line))) / 2);
$originOffsetX = (ImageSX($gdimg) - ImageSX($img_watermark)) / 2;
$originOffsetY = (ImageSY($gdimg) - ImageSY($img_watermark)) / 2;
break;
case 'T':
$x_offset = round(($text_width - (ImageFontWidth($size) * strlen($line))) / 2);
$originOffsetX = (ImageSX($gdimg) - ImageSX($img_watermark)) / 2;
$originOffsetY = $margin;
break;
case 'B':
$x_offset = round(($text_width - (ImageFontWidth($size) * strlen($line))) / 2);
$originOffsetX = (ImageSX($gdimg) - ImageSX($img_watermark)) / 2;
$originOffsetY = ImageSY($gdimg) - ImageSY($img_watermark) - $margin;
break;
case 'L':
$x_offset = 0;
$originOffsetX = $margin;
$originOffsetY = (ImageSY($gdimg) - ImageSY($img_watermark)) / 2;
break;
case 'TL':
$x_offset = 0;
$originOffsetX = $margin;
$originOffsetY = $margin;
break;
case 'BL':
$x_offset = 0;
$originOffsetX = $margin;
$originOffsetY = ImageSY($gdimg) - ImageSY($img_watermark) - $margin;
break;
case 'R':
$x_offset = $text_width - (ImageFontWidth($size) * strlen($line));
$originOffsetX = ImageSX($gdimg) - ImageSX($img_watermark) - $margin;
$originOffsetY = (ImageSY($gdimg) - ImageSY($img_watermark)) / 2;
break;
case 'TR':
$x_offset = $text_width - (ImageFontWidth($size) * strlen($line));
$originOffsetX = ImageSX($gdimg) - ImageSX($img_watermark) - $margin;
$originOffsetY = $margin;
break;
case 'BR':
default:
$x_offset = $text_width - (ImageFontWidth($size) * strlen($line));
$originOffsetX = ImageSX($gdimg) - ImageSX($img_watermark) - $margin;
$originOffsetY = ImageSY($gdimg) - ImageSY($img_watermark) - $margin;
break;
}
$this->DebugMessage('WatermarkText() calling ImageString($img_watermark, '.$size.', '.$x_offset.', '.($key * ImageFontHeight($size)).', '.$line.', $text_color_watermark)', __FILE__, __LINE__);
ImageString($img_watermark, $size, $x_offset, $key * ImageFontHeight($size), $line, $text_color_watermark);
if ($angle && $img_watermark_mask) {
$this->DebugMessage('WatermarkText() calling ImageString($img_watermark_mask, '.$size.', '.$x_offset.', '.($key * ImageFontHeight($size)).', '.$text.', $mask_color_watermark)', __FILE__, __LINE__);
ImageString($img_watermark_mask, $size, $x_offset, $key * ImageFontHeight($size), $text, $mask_color_watermark);
}
}
if ($angle && $img_watermark_mask) {
$img_watermark = ImageRotate($img_watermark, $angle, $text_color_background);
$img_watermark_mask = ImageRotate($img_watermark_mask, $angle, $mask_color_background);
phpthumb_filters::ApplyMask($img_watermark_mask, $img_watermark);
}
//phpthumb_filters::WatermarkOverlay($gdimg, $img_watermark, $alignment, $opacity, $margin);
$this->DebugMessage('WatermarkText() calling phpthumb_filters::WatermarkOverlay($gdimg, $img_watermark, '.($originOffsetX.'x'.$originOffsetY).', '.$opacity.', 0)', __FILE__, __LINE__);
phpthumb_filters::WatermarkOverlay($gdimg, $img_watermark, $originOffsetX.'x'.$originOffsetY, $opacity, 0);
ImageDestroy($img_watermark);
return true;
}
}
return false;
}
}
$pt = PhpThumb::getInstance();
$pt->registerPlugin('GdWatermarkTTF', 'gd');