diff options
Diffstat (limited to 'inc/image.php')
| -rw-r--r-- | inc/image.php | 869 |
1 files changed, 436 insertions, 433 deletions
diff --git a/inc/image.php b/inc/image.php index 9275bd9c..f6bc3e7c 100644 --- a/inc/image.php +++ b/inc/image.php @@ -1,488 +1,491 @@ <?php - if($_SERVER['SCRIPT_FILENAME'] == str_replace('\\', '/', __FILE__)) { - // You cannot request this file directly. - header('Location: ../', true, 302); - exit; - } - class Image { - public $src, $format, $image, $size; - public function __construct($src, $format = false) { - global $config; - - $this->src = $src; - $this->format = $format; - - if($config['thumb_method'] == 'imagick') { - $classname = 'ImageImagick'; - } elseif($config['thumb_method'] == 'convert') { - $classname = 'ImageConvert'; - } else { - $classname = 'Image' . strtoupper($this->format); - if(!class_exists($classname)) { - error('Unsupported file format: ' . $this->format); - } - } - - $this->image = new $classname($this); - if(!$this->image->valid()) { - $this->delete(); - error($config['error']['invalidimg']); - } - - $this->size = (object)Array('width' => $this->image->_width(), 'height' => $this->image->_height()); - if($this->size->width < 1 || $this->size->height < 1) { - $this->delete(); - error($config['error']['invalidimg']); - } - } +/* + * Copyright (c) 2010-2012 Tinyboard Development Group + */ + +if(realpath($_SERVER['SCRIPT_FILENAME']) == str_replace('\\', '/', __FILE__)) { + // You cannot request this file directly. + exit; +} + +class Image { + public $src, $format, $image, $size; + public function __construct($src, $format = false) { + global $config; - public function resize($extension, $max_width, $max_height) { - global $config; - - if($config['thumb_method'] == 'imagick') { - $classname = 'ImageImagick'; - } elseif($config['thumb_method'] == 'convert') { - $classname = 'ImageConvert'; - } else { - $classname = 'Image' . strtoupper($extension); - if(!class_exists($classname)) { - error('Unsupported file format: ' . $extension); - } - } - - $thumb = new $classname(false); - $thumb->src = $this->src; - $thumb->original_width = $this->size->width; - $thumb->original_height = $this->size->height; - - $x_ratio = $max_width / $this->size->width; - $y_ratio = $max_height / $this->size->height; - - if(($this->size->width <= $max_width) && ($this->size->height <= $max_height)) { - $width = $this->size->width; - $height = $this->size->height; - } elseif (($x_ratio * $this->size->height) < $max_height) { - $height = ceil($x_ratio * $this->size->height); - $width = $max_width; - } else { - $width = ceil($y_ratio * $this->size->width); - $height = $max_height; + $this->src = $src; + $this->format = $format; + + if($config['thumb_method'] == 'imagick') { + $classname = 'ImageImagick'; + } elseif($config['thumb_method'] == 'convert') { + $classname = 'ImageConvert'; + } else { + $classname = 'Image' . strtoupper($this->format); + if(!class_exists($classname)) { + error('Unsupported file format: ' . $this->format); } - - $thumb->_resize($this->image->image, $width, $height); - return $thumb; } - public function to($dst) { - $this->image->to($dst); + $this->image = new $classname($this); + if(!$this->image->valid()) { + $this->delete(); + error($config['error']['invalidimg']); } - public function delete() { - file_unlink($this->src); - } - public function destroy() { - $this->image->_destroy(); + $this->size = (object)Array('width' => $this->image->_width(), 'height' => $this->image->_height()); + if($this->size->width < 1 || $this->size->height < 1) { + $this->delete(); + error($config['error']['invalidimg']); } } - class ImageGD { - public function GD_create() { - $this->image = imagecreatetruecolor($this->width, $this->height); - } - public function GD_copyresampled() { - imagecopyresampled($this->image, $this->original, 0, 0, 0, 0, $this->width, $this->height, $this->original_width, $this->original_height); + public function resize($extension, $max_width, $max_height) { + global $config; + + if($config['thumb_method'] == 'imagick') { + $classname = 'ImageImagick'; + } elseif($config['thumb_method'] == 'convert') { + $classname = 'ImageConvert'; + } else { + $classname = 'Image' . strtoupper($extension); + if(!class_exists($classname)) { + error('Unsupported file format: ' . $extension); + } } - public function GD_resize() { - $this->GD_create(); - $this->GD_copyresampled(); + + $thumb = new $classname(false); + $thumb->src = $this->src; + $thumb->original_width = $this->size->width; + $thumb->original_height = $this->size->height; + + $x_ratio = $max_width / $this->size->width; + $y_ratio = $max_height / $this->size->height; + + if(($this->size->width <= $max_width) && ($this->size->height <= $max_height)) { + $width = $this->size->width; + $height = $this->size->height; + } elseif (($x_ratio * $this->size->height) < $max_height) { + $height = ceil($x_ratio * $this->size->height); + $width = $max_width; + } else { + $width = ceil($y_ratio * $this->size->width); + $height = $max_height; } + + $thumb->_resize($this->image->image, $width, $height); + return $thumb; } - class ImageBase extends ImageGD { - public $image, $src, $original, $original_width, $original_height, $width, $height; - public function valid() { - return (bool)$this->image; - } + public function to($dst) { + $this->image->to($dst); + } + + public function delete() { + file_unlink($this->src); + } + public function destroy() { + $this->image->_destroy(); + } +} + +class ImageGD { + public function GD_create() { + $this->image = imagecreatetruecolor($this->width, $this->height); + } + public function GD_copyresampled() { + imagecopyresampled($this->image, $this->original, 0, 0, 0, 0, $this->width, $this->height, $this->original_width, $this->original_height); + } + public function GD_resize() { + $this->GD_create(); + $this->GD_copyresampled(); + } +} + +class ImageBase extends ImageGD { + public $image, $src, $original, $original_width, $original_height, $width, $height; + public function valid() { + return (bool)$this->image; + } + + public function __construct($img) { + if(method_exists($this, 'init')) + $this->init(); - public function __construct($img) { - if(method_exists($this, 'init')) - $this->init(); - - if($img !== false) { - $this->src = $img->src; - $this->from(); - } + if($img !== false) { + $this->src = $img->src; + $this->from(); } + } + + public function _width() { + if(method_exists($this, 'width')) + return $this->width(); + // use default GD functions + return imagesx($this->image); + } + public function _height() { + if(method_exists($this, 'height')) + return $this->height(); + // use default GD functions + return imagesy($this->image); + } + public function _destroy() { + if(method_exists($this, 'destroy')) + return $this->destroy(); + // use default GD functions + return imagedestroy($this->image); + } + public function _resize($original, $width, $height) { + $this->original = &$original; + $this->width = $width; + $this->height = $height; - public function _width() { - if(method_exists($this, 'width')) - return $this->width(); - // use default GD functions - return imagesx($this->image); - } - public function _height() { - if(method_exists($this, 'height')) - return $this->height(); - // use default GD functions - return imagesy($this->image); - } - public function _destroy() { - if(method_exists($this, 'destroy')) - return $this->destroy(); + if(method_exists($this, 'resize')) + $this->resize(); + else // use default GD functions - return imagedestroy($this->image); - } - public function _resize($original, $width, $height) { - $this->original = &$original; - $this->width = $width; - $this->height = $height; - - if(method_exists($this, 'resize')) - $this->resize(); - else - // use default GD functions - $this->GD_resize(); + $this->GD_resize(); + } +} + +class ImageImagick extends ImageBase { + public function init() { + $this->image = new Imagick(); + $this->image->setBackgroundColor(new ImagickPixel('transparent')); + } + public function from() { + try { + $this->image->readImage($this->src); + } catch(ImagickException $e) { + // invalid image + $this->image = false; } } - - class ImageImagick extends ImageBase { - public function init() { + public function to($src) { + if(preg_match('/\.gif$/i', $src)) + $this->image->writeImages($src, true); + else + $this->image->writeImage($src); + } + public function width() { + return $this->image->getImageWidth(); + } + public function height() { + return $this->image->getImageHeight(); + } + public function destroy() { + return $this->image->destroy(); + } + public function resize() { + global $config; + + if(preg_match('/\.gif$/i', $this->src) && $config['thumb_ext'] == 'gif') { $this->image = new Imagick(); - $this->image->setBackgroundColor(new ImagickPixel('transparent')); - } - public function from() { - try { - $this->image->readImage($this->src); - } catch(ImagickException $e) { - // invalid image - $this->image = false; - } - } - public function to($src) { - if(preg_match('/\.gif$/i', $src)) - $this->image->writeImages($src, true); - else - $this->image->writeImage($src); - } - public function width() { - return $this->image->getImageWidth(); - } - public function height() { - return $this->image->getImageHeight(); - } - public function destroy() { - return $this->image->destroy(); - } - public function resize() { - global $config; + $this->image->setFormat('gif'); - if(preg_match('/\.gif$/i', $this->src) && $config['thumb_ext'] == 'gif') { - $this->image = new Imagick(); - $this->image->setFormat('gif'); - - $keep_frames = Array(); - for($i = 0; $i < $this->original->getNumberImages(); $i += floor($this->original->getNumberImages() / $config['thumb_keep_animation_frames'])) - $keep_frames[] = $i; + $keep_frames = Array(); + for($i = 0; $i < $this->original->getNumberImages(); $i += floor($this->original->getNumberImages() / $config['thumb_keep_animation_frames'])) + $keep_frames[] = $i; + + $i = 0; + $delay = 0; + foreach($this->original as $frame) { + $delay += $frame->getImageDelay(); - $i = 0; - $delay = 0; - foreach($this->original as $frame) { - $delay += $frame->getImageDelay(); + //if($i < $config['thumb_keep_animation_frames']) { + if(in_array($i, $keep_frames)) { + // $frame->scaleImage($this->width, $this->height, false); + $frame->sampleImage($this->width, $this->height); + $frame->setImagePage($this->width, $this->height, 0, 0); + $frame->setImageDelay($delay); + $delay = 0; - //if($i < $config['thumb_keep_animation_frames']) { - if(in_array($i, $keep_frames)) { - // $frame->scaleImage($this->width, $this->height, false); - $frame->sampleImage($this->width, $this->height); - $frame->setImagePage($this->width, $this->height, 0, 0); - $frame->setImageDelay($delay); - $delay = 0; - - $this->image->addImage($frame->getImage()); - } - $i++; - } - } else { - $this->image = clone $this->original; - $this->image->scaleImage($this->width, $this->height, false); - } + $this->image->addImage($frame->getImage()); + } + $i++; + } + } else { + $this->image = clone $this->original; + $this->image->scaleImage($this->width, $this->height, false); } } +} + + +class ImageConvert extends ImageBase { + public $width, $height, $temp; - - class ImageConvert extends ImageBase { - public $width, $height, $temp; + public function init() { + global $config; - public function init() { - global $config; - - $this->temp = false; - } - public function from() { - $size = trim(shell_exec('identify -format "%w %h" ' . escapeshellarg($this->src . '[0]'))); - if(preg_match('/^(\d+) (\d+)$/', $size, $m)) { - $this->width = $m[1]; - $this->height = $m[2]; - - $this->image = true; - } else { - // mark as invalid - $this->image = false; - } - } - public function to($src) { - if(!$this->temp) { - // $config['redraw_image'] - shell_exec('convert ' . escapeshellarg($this->src) . ' ' . escapeshellarg($src)); - } else { - rename($this->temp, $src); - chmod($src, 0664); - } - } - public function width() { - return $this->width; - } - public function height() { - return $this->height; - } - public function destroy() { - @unlink($this->temp); - $this->temp = false; - } - public function resize() { - global $config; - - if($this->temp) { - // remove old - $this->destroy(); - } - - $this->temp = tempnam($config['tmp'], 'imagick'); - - $quality = $config['thumb_quality'] * 10; + $this->temp = false; + } + public function from() { + $size = trim(shell_exec('identify -format "%w %h" ' . escapeshellarg($this->src . '[0]'))); + if(preg_match('/^(\d+) (\d+)$/', $size, $m)) { + $this->width = $m[1]; + $this->height = $m[2]; - if(shell_exec("convert -flatten -filter Point -scale {$this->width}x{$this->height} +antialias -quality {$quality} " . escapeshellarg($this->src . '[0]') . " " . escapeshellarg($this->temp)) || !file_exists($this->temp)) - error('Failed to resize image!'); + $this->image = true; + } else { + // mark as invalid + $this->image = false; } } - - class ImagePNG extends ImageBase { - public function from() { - $this->image = @imagecreatefrompng($this->src); - } - public function to($src) { - global $config; - imagepng($this->image, $src, $config['thumb_quality']); - } - public function resize() { - $this->GD_create(); - imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0)); - imagesavealpha($this->image, true); - imagealphablending($this->image, false); - $this->GD_copyresampled(); + public function to($src) { + if(!$this->temp) { + // $config['redraw_image'] + shell_exec('convert ' . escapeshellarg($this->src) . ' ' . escapeshellarg($src)); + } else { + rename($this->temp, $src); + chmod($src, 0664); } } - - class ImageGIF extends ImageBase { - public function from() { - $this->image = @imagecreatefromgif($this->src); - } - public function to($src) { - imagegif($this->image, $src); - } - public function resize() { - $this->GD_create(); - imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0)); - imagesavealpha($this->image, true); - $this->GD_copyresampled(); - } + public function width() { + return $this->width; } - - class ImageJPG extends ImageBase { - public function from() { - $this->image = @imagecreatefromjpeg($this->src); - } - public function to($src) { - imagejpeg($this->image, $src); - } + public function height() { + return $this->height; } - class ImageJPEG extends ImageJPG { + public function destroy() { + @unlink($this->temp); + $this->temp = false; } - - class ImageBMP extends ImageBase { - public function from() { - $this->image = @imagecreatefrombmp($this->src); - } - public function to($src) { - imagebmp($this->image, $src); + public function resize() { + global $config; + + if($this->temp) { + // remove old + $this->destroy(); } + + $this->temp = tempnam($config['tmp'], 'imagick'); + + $quality = $config['thumb_quality'] * 10; + + if(shell_exec("convert -flatten -filter Point -scale {$this->width}x{$this->height} +antialias -quality {$quality} " . escapeshellarg($this->src . '[0]') . " " . escapeshellarg($this->temp)) || !file_exists($this->temp)) + error('Failed to resize image!'); } - - - /*********************************************/ - /* Fonction: imagecreatefrombmp */ - /* Author: DHKold */ - /* Contact: admin@dhkold.com */ - /* Date: The 15th of June 2005 */ - /* Version: 2.0B */ - /*********************************************/ +} - function imagecreatefrombmp($filename) { - if (! $f1 = fopen($filename,"rb")) return FALSE; - $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14)); - if ($FILE['file_type'] != 19778) return FALSE; - $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'. - '/Vcompression/Vsize_bitmap/Vhoriz_resolution'. - '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40)); - $BMP['colors'] = pow(2,$BMP['bits_per_pixel']); - if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset']; - $BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8; - $BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']); - $BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4); - $BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4); - $BMP['decal'] = 4-(4*$BMP['decal']); - if ($BMP['decal'] == 4) $BMP['decal'] = 0; +class ImagePNG extends ImageBase { + public function from() { + $this->image = @imagecreatefrompng($this->src); + } + public function to($src) { + global $config; + imagepng($this->image, $src, $config['thumb_quality']); + } + public function resize() { + $this->GD_create(); + imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0)); + imagesavealpha($this->image, true); + imagealphablending($this->image, false); + $this->GD_copyresampled(); + } +} - $PALETTE = array(); - if ($BMP['colors'] < 16777216) - { - $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4)); - } +class ImageGIF extends ImageBase { + public function from() { + $this->image = @imagecreatefromgif($this->src); + } + public function to($src) { + imagegif($this->image, $src); + } + public function resize() { + $this->GD_create(); + imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0)); + imagesavealpha($this->image, true); + $this->GD_copyresampled(); + } +} - $IMG = fread($f1,$BMP['size_bitmap']); - $VIDE = chr(0); +class ImageJPG extends ImageBase { + public function from() { + $this->image = @imagecreatefromjpeg($this->src); + } + public function to($src) { + imagejpeg($this->image, $src); + } +} +class ImageJPEG extends ImageJPG { +} - $res = imagecreatetruecolor($BMP['width'],$BMP['height']); - $P = 0; - $Y = $BMP['height']-1; - while ($Y >= 0) - { - $X=0; - while ($X < $BMP['width']) - { - if ($BMP['bits_per_pixel'] == 24) - $COLOR = unpack("V",substr($IMG,$P,3).$VIDE); - elseif ($BMP['bits_per_pixel'] == 16) - { - $COLOR = unpack("n",substr($IMG,$P,2)); - $COLOR[1] = $PALETTE[$COLOR[1]+1]; - } - elseif ($BMP['bits_per_pixel'] == 8) - { - $COLOR = unpack("n",$VIDE.substr($IMG,$P,1)); - $COLOR[1] = $PALETTE[$COLOR[1]+1]; - } - elseif ($BMP['bits_per_pixel'] == 4) - { - $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); - if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F); - $COLOR[1] = $PALETTE[$COLOR[1]+1]; - } - elseif ($BMP['bits_per_pixel'] == 1) - { - $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); - if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7; - elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6; - elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5; - elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4; - elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3; - elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2; - elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1; - elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1); - $COLOR[1] = $PALETTE[$COLOR[1]+1]; - } - else - return FALSE; - imagesetpixel($res,$X,$Y,$COLOR[1]); - $X++; - $P += $BMP['bytes_per_pixel']; - } - $Y--; - $P+=$BMP['decal']; - } - fclose($f1); +class ImageBMP extends ImageBase { + public function from() { + $this->image = @imagecreatefrombmp($this->src); + } + public function to($src) { + imagebmp($this->image, $src); + } +} + + +/*********************************************/ +/* Fonction: imagecreatefrombmp */ +/* Author: DHKold */ +/* Contact: admin@dhkold.com */ +/* Date: The 15th of June 2005 */ +/* Version: 2.0B */ +/*********************************************/ + +function imagecreatefrombmp($filename) { + if (! $f1 = fopen($filename,"rb")) return FALSE; + $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14)); + if ($FILE['file_type'] != 19778) return FALSE; + $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'. + '/Vcompression/Vsize_bitmap/Vhoriz_resolution'. + '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40)); + $BMP['colors'] = pow(2,$BMP['bits_per_pixel']); + if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset']; + $BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8; + $BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']); + $BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4); + $BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4); + $BMP['decal'] = 4-(4*$BMP['decal']); + if ($BMP['decal'] == 4) $BMP['decal'] = 0; + + $PALETTE = array(); + if ($BMP['colors'] < 16777216) + { + $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4)); + } - return $res; + $IMG = fread($f1,$BMP['size_bitmap']); + $VIDE = chr(0); + + $res = imagecreatetruecolor($BMP['width'],$BMP['height']); + $P = 0; + $Y = $BMP['height']-1; + while ($Y >= 0) + { + $X=0; + while ($X < $BMP['width']) + { + if ($BMP['bits_per_pixel'] == 24) + $COLOR = unpack("V",substr($IMG,$P,3).$VIDE); + elseif ($BMP['bits_per_pixel'] == 16) + { + $COLOR = unpack("n",substr($IMG,$P,2)); + $COLOR[1] = $PALETTE[$COLOR[1]+1]; + } + elseif ($BMP['bits_per_pixel'] == 8) + { + $COLOR = unpack("n",$VIDE.substr($IMG,$P,1)); + $COLOR[1] = $PALETTE[$COLOR[1]+1]; + } + elseif ($BMP['bits_per_pixel'] == 4) + { + $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); + if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F); + $COLOR[1] = $PALETTE[$COLOR[1]+1]; + } + elseif ($BMP['bits_per_pixel'] == 1) + { + $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1)); + if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7; + elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6; + elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5; + elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4; + elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3; + elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2; + elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1; + elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1); + $COLOR[1] = $PALETTE[$COLOR[1]+1]; + } + else + return FALSE; + imagesetpixel($res,$X,$Y,$COLOR[1]); + $X++; + $P += $BMP['bytes_per_pixel']; } - - function imagebmp(&$img, $filename='') { - $widthOrig = imagesx($img); - $widthFloor = ((floor($widthOrig/16))*16); - $widthCeil = ((ceil($widthOrig/16))*16); - $height = imagesy($img); + $Y--; + $P+=$BMP['decal']; + } + fclose($f1); - $size = ($widthCeil*$height*3)+54; + return $res; +} - // Bitmap File Header - $result = 'BM'; // header (2b) - $result .= int_to_dword($size); // size of file (4b) - $result .= int_to_dword(0); // reserved (4b) - $result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b) - // Bitmap Info Header - $result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b) - $result .= int_to_dword($widthCeil); // width of bitmap (4b) - $result .= int_to_dword($height); // height of bitmap (4b) - $result .= int_to_word(1); // biPlanes = 1 (2b) - $result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b - $result .= int_to_dword(0); // RLE COMPRESSION (4b) - $result .= int_to_dword(0); // width x height (4b) - $result .= int_to_dword(0); // biXPelsPerMeter (4b) - $result .= int_to_dword(0); // biYPelsPerMeter (4b) - $result .= int_to_dword(0); // Number of palettes used (4b) - $result .= int_to_dword(0); // Number of important colour (4b) +function imagebmp(&$img, $filename='') { + $widthOrig = imagesx($img); + $widthFloor = ((floor($widthOrig/16))*16); + $widthCeil = ((ceil($widthOrig/16))*16); + $height = imagesy($img); - // is faster than chr() - $arrChr = array(); - for($i=0; $i<256; $i++){ - $arrChr[$i] = chr($i); - } + $size = ($widthCeil*$height*3)+54; - // creates image data - $bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0); + // Bitmap File Header + $result = 'BM'; // header (2b) + $result .= int_to_dword($size); // size of file (4b) + $result .= int_to_dword(0); // reserved (4b) + $result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b) + // Bitmap Info Header + $result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b) + $result .= int_to_dword($widthCeil); // width of bitmap (4b) + $result .= int_to_dword($height); // height of bitmap (4b) + $result .= int_to_word(1); // biPlanes = 1 (2b) + $result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b + $result .= int_to_dword(0); // RLE COMPRESSION (4b) + $result .= int_to_dword(0); // width x height (4b) + $result .= int_to_dword(0); // biXPelsPerMeter (4b) + $result .= int_to_dword(0); // biYPelsPerMeter (4b) + $result .= int_to_dword(0); // Number of palettes used (4b) + $result .= int_to_dword(0); // Number of important colour (4b) - // bottom to top - left to right - attention blue green red !!! - $y=$height-1; - for ($y2=0; $y2<$height; $y2++) { - for ($x=0; $x<$widthFloor; ) { - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - } - for ($x=$widthFloor; $x<$widthCeil; $x++) { - $rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor; - $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; - } - $y--; - } + // is faster than chr() + $arrChr = array(); + for($i=0; $i<256; $i++){ + $arrChr[$i] = chr($i); + } - // see imagegif - if($filename == '') { - echo $result; - } else { - $file = fopen($filename, 'wb'); - fwrite($file, $result); - fclose($file); + // creates image data + $bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0); + + // bottom to top - left to right - attention blue green red !!! + $y=$height-1; + for ($y2=0; $y2<$height; $y2++) { + for ($x=0; $x<$widthFloor; ) { + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y)); + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; } + for ($x=$widthFloor; $x<$widthCeil; $x++) { + $rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor; + $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']]; + } + $y--; } - // imagebmp helpers - function int_to_dword($n) { - return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255); - } - function int_to_word($n) { - return chr($n & 255).chr(($n >> 8) & 255); + + // see imagegif + if($filename == '') { + echo $result; + } else { + $file = fopen($filename, 'wb'); + fwrite($file, $result); + fclose($file); } +} +// imagebmp helpers +function int_to_dword($n) { + return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255); +} +function int_to_word($n) { + return chr($n & 255).chr(($n >> 8) & 255); +} -?> |