diff options
| author | Savetheinternet <savetheinternet@tinyboard.org> | 2011-07-12 20:29:35 +1000 |
|---|---|---|
| committer | Savetheinternet <savetheinternet@tinyboard.org> | 2011-07-12 20:29:35 +1000 |
| commit | 97979b79992474d342404f76a61936c456c0565d (patch) | |
| tree | ac564e784aaf18a6d3bc4da7711c192b48e80ef3 /inc/functions.php | |
| parent | 2d00b32bede669d82b09f3a1c78923883581bff2 (diff) | |
image handling class
Diffstat (limited to 'inc/functions.php')
| -rw-r--r-- | inc/functions.php | 258 |
1 files changed, 1 insertions, 257 deletions
diff --git a/inc/functions.php b/inc/functions.php index 7e57f7bd..91b68bfc 100644 --- a/inc/functions.php +++ b/inc/functions.php @@ -1495,91 +1495,7 @@ return "{$numerator}{$sep}{$denominator}"; } - /*********************************************/ - /* Fonction: imagecreatefrombmp */ - /* Author: DHKold */ - /* Contact: admin@dhkold.com */ - /* Date: The 15th of June 2005 */ - /* Version: 2.0B */ - /*********************************************/ - - function imagecreatefrombmp($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)); - } - - $IMG = fread($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']; - } - $Y--; - $P+=$BMP['decal']; - } - fclose($f1); - - return $res; - } + function getPostByHash($hash) { global $board; @@ -1602,176 +1518,4 @@ file_unlink($post['thumb']); } } - - function createimage($type, $source_pic) { - global $config; - - $image = false; - switch($type) { - case 'jpg': - case 'jpeg': - if(!$image = @imagecreatefromjpeg($source_pic)) { - file_unlink($source_pic); - error($config['error']['invalidimg']); - } - break; - case 'png': - if(!$image = @imagecreatefrompng($source_pic)) { - file_unlink($source_pic); - error($config['error']['invalidimg']); - } - break; - case 'gif': - if(!$image = @imagecreatefromgif($source_pic)) { - file_unlink($source_pic); - error($config['error']['invalidimg']); - } - break; - case 'bmp': - if(!$image = @imagecreatefrombmp($source_pic)) { - unlink($source_pic); - file_unlink($config['error']['invalidimg']); - } - break; - default: - error($config['error']['unknownext']); - } - return $image; - } - - function resize($src, $width, $height, $destination_pic, $max_width, $max_height, $ext) { - global $config; - $return = Array(); - - $x_ratio = $max_width / $width; - $y_ratio = $max_height / $height; - - if(($width <= $max_width) && ($height <= $max_height)) { - $tn_width = $width; - $tn_height = $height; - } elseif (($x_ratio * $height) < $max_height) { - $tn_height = ceil($x_ratio * $height); - $tn_width = $max_width; - } else { - $tn_width = ceil($y_ratio * $width); - $tn_height = $max_height; - } - - $return['width'] = $tn_width; - $return['height'] = $tn_height; - - $tmp = imagecreatetruecolor($tn_width, $tn_height); - - if($ext == 'png' || $ext == 'gif') { - imagecolortransparent($tmp, imagecolorallocatealpha($tmp, 0, 0, 0, 0)); - imagesavealpha($tmp, true); - } - if($ext == 'png') - imagealphablending($tmp, false); - - imagecopyresampled($tmp, $src, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height); - - switch($ext) { - case 'jpg': - case 'jpeg': - imagejpeg($tmp, $destination_pic); - break; - case 'png': - imagepng($tmp, $destination_pic, $config['thumb_quality']); - break; - case 'gif': - imagegif($tmp, $destination_pic); - break; - case 'bmp': - imagebmp($tmp, $destination_pic); - break; - default: - error($config['error']['unknownext']); - } - - imagedestroy($src); - imagedestroy($tmp); - - return $return; - } - - function imagebmp(&$img, $filename='') { - $widthOrig = imagesx($img); - $widthFloor = ((floor($widthOrig/16))*16); - $widthCeil = ((ceil($widthOrig/16))*16); - $height = imagesy($img); - - $size = ($widthCeil*$height*3)+54; - - // 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) - - // is faster than chr() - $arrChr = array(); - for($i=0; $i<256; $i++){ - $arrChr[$i] = chr($i); - } - - // 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']]; - } - $y--; - } - - // see imagegif - if($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); - } ?> |
