PHP imagefontwidth函数代码示例

 public function __construct($message, $iWidth = null, $iHeight = null)
 {
     $iFont = 2;
     if ($message instanceof Exception) {
         $message = $message->getMessage();
         if (defined('DEBUG') && DEBUG) {
             $message .= "\n" . $message->getTraceAsString();
         }
     }
     // calculate image size
     if ($iWidth == null || $iHeight != null) {
         $aMessage = explode("\n", $message);
         $iFontWidth = imagefontwidth($iFont);
         $iFontHeight = imagefontheight($iFont);
         foreach ($aMessage as $sLine) {
             $iHeight += $iFontHeight + 1;
             $iMessageWidth = $iFontWidth * (strlen($sLine) + 1);
             if ($iMessageWidth > $iWidth) {
                 $iWidth = $iMessageWidth;
             }
         }
         $iHeight += 8;
     }
     parent::__construct($iWidth, $iHeight);
     $iFontColor = $this->getColor(255, 0, 0);
     $iBorderColor = $this->getColor(255, 0, 0);
     $iBGColor = $this->getColor(255, 255, 255);
     $iPadding = 4;
     $this->fill(0, 0, $iBGColor);
     $this->drawRectangle(0, 0, $this->getWidth() - 1, $this->getHeight() - 1, $iBorderColor);
     $this->drawText($message, $iFont, $iFontColor, $iPadding, $iPadding);
 }

 function __construct()
 {
     session_start();
     //----
     header("Content-type: image/gif");
     header("Expires: Mon, 1 Jun 1999 01:00:00 GMT");
     //----
     if (!function_exists('imagecreate')) {
         readfile('i/0.gif');
         exit;
     }
     //----
     $im = imagecreate(59, 22);
     //----
     $bg = imagecolorallocate($im, 0xff, 0xff, 0xff);
     $black = imagecolorallocate($im, 0x62, 0x63, 0x63);
     //----
     $verify_code = trim($_SESSION['verify_code']);
     $len = strlen($verify_code);
     //----
     $x = 3;
     $y = 3;
     $w = imagefontwidth(5);
     mt_srand($this->MakeSeed());
     //----
     for ($i = 0; $i < $len; ++$i) {
         imagestring($im, 5, $x, $y + mt_rand(0, 4) - 2, $verify_code[$i], $black);
         //----
         $x += $w;
     }
     //---- output the image
     imagegif($im);
     //----
     exit;
 }

 function execute($par)
 {
     global $wgRequest, $wgEmailImage;
     $size = 4;
     $text = $wgRequest->getText('img');
     /* decode this rubbish */
     $text = rawurldecode($text);
     $text = str_rot13($text);
     $text = base64_decode($text);
     $text = str_replace($wgEmailImage['ugly'], "", $text);
     $fontwidth = imagefontwidth($size);
     $fontheight = imagefontheight($size);
     $width = strlen($text) * $fontwidth + 4;
     $height = $fontheight + 2;
     $im = @imagecreatetruecolor($width, $height) or exit;
     $trans = imagecolorallocate($im, 0, 0, 0);
     /* must be black! */
     $color = imagecolorallocate($im, 1, 1, 1);
     /* nearly black ;) */
     imagecolortransparent($im, $trans);
     /* seems to work only with black! */
     imagestring($im, $size, 2, 0, $text, $color);
     //header ("Content-Type: image/png"); imagepng($im); => IE is just so bad!
     header("Content-Type: image/gif");
     imagegif($im);
     exit;
 }

 /**
  * Generates image
  *
  * @param string $sMac verification code
  *
  * @return null
  */
 function generateVerificationImg($sMac)
 {
     $iWidth = 80;
     $iHeight = 18;
     $iFontSize = 14;
     if (function_exists('imagecreatetruecolor')) {
         // GD2
         $oImage = imagecreatetruecolor($iWidth, $iHeight);
     } elseif (function_exists('imagecreate')) {
         // GD1
         $oImage = imagecreate($iWidth, $iHeight);
     } else {
         // GD not found
         return;
     }
     $iTextX = ($iWidth - strlen($sMac) * imagefontwidth($iFontSize)) / 2;
     $iTextY = ($iHeight - imagefontheight($iFontSize)) / 2;
     $aColors = array();
     $aColors["text"] = imagecolorallocate($oImage, 0, 0, 0);
     $aColors["shadow1"] = imagecolorallocate($oImage, 200, 200, 200);
     $aColors["shadow2"] = imagecolorallocate($oImage, 100, 100, 100);
     $aColors["background"] = imagecolorallocate($oImage, 255, 255, 255);
     $aColors["border"] = imagecolorallocate($oImage, 0, 0, 0);
     imagefill($oImage, 0, 0, $aColors["background"]);
     imagerectangle($oImage, 0, 0, $iWidth - 1, $iHeight - 1, $aColors["border"]);
     imagestring($oImage, $iFontSize, $iTextX + 1, $iTextY + 0, $sMac, $aColors["shadow2"]);
     imagestring($oImage, $iFontSize, $iTextX + 0, $iTextY + 1, $sMac, $aColors["shadow1"]);
     imagestring($oImage, $iFontSize, $iTextX, $iTextY, $sMac, $aColors["text"]);
     header('Content-type: image/png');
     imagepng($oImage);
     imagedestroy($oImage);
 }

function CenterImageString($image, $image_width, $string, $font_size, $y, $color)
{
    $text_width = imagefontwidth($font_size) * strlen($string);
    $center = ceil($image_width / 2);
    $x = $center - ceil($text_width / 2);
    ImageString($image, $font_size, $x, $y, $string, $color);
}

 public function drawHeader()
 {
     $str = $this->header;
     $fontnum = $this->sizeX < 500 ? 2 : 4;
     $x = $this->fullSizeX / 2 - imagefontwidth($fontnum) * strlen($str) / 2;
     imagestring($this->im, $fontnum, $x, 1, $str, $this->GetColor('Dark Red No Alpha'));
 }

 public static function placeholder($height, $width, $text)
 {
     // Dimensions
     //header ("Content-type: image/png");
     $getsize = $height . 'x' . $width;
     $dimensions = explode('x', $getsize);
     // Create image
     $image = imagecreate($dimensions[0], $dimensions[1]);
     // Colours
     $bg = 'ccc';
     $bg = Image::hex2rgb($bg);
     $setbg = imagecolorallocate($image, $bg['r'], $bg['g'], $bg['b']);
     $fg = '555';
     $fg = Image::hex2rgb($fg);
     $setfg = imagecolorallocate($image, $fg['r'], $fg['g'], $fg['b']);
     // Text
     //$text = isset($_GET['text']) ? strip_tags($_GET['text']) : $getsize;
     //$text = str_replace('+', ' ', $text);
     // Text positioning
     $fontsize = 4;
     $fontwidth = imagefontwidth($fontsize);
     // width of a character
     $fontheight = imagefontheight($fontsize);
     // height of a character
     $length = strlen($text);
     // number of characters
     $textwidth = $length * $fontwidth;
     // text width
     $xpos = (imagesx($image) - $textwidth) / 2;
     $ypos = (imagesy($image) - $fontheight) / 2;
     // Generate text
     imagestring($image, $fontsize, $xpos, $ypos, $text, $setfg);
     // Render image
     imagepng($image);
 }

 function hide($mail, $imgAttr = null)
 {
     // chequea si la librería GD esta instalada en el server
     if (!extension_loaded('gd') || !function_exists('gd_info')) {
         return $mail;
     }
     $filepath = IMAGES_URL . "mail/";
     $filename = $filepath . md5($mail) . ".png";
     $url = "mail/" . md5($mail) . ".png";
     if (!file_exists($filename)) {
         if (!is_dir($filepath)) {
             @mkdir($filepath);
         }
         /*calculo el tamaño que va a tener la imagen*/
         $width = imagefontwidth(3) * strlen($mail);
         $height = imagefontheight(3);
         $image = imagecreatetruecolor($width, $height);
         /*el color rojo lo uso como background transparente*/
         $white = imagecolorallocate($image, 255, 255, 255);
         $fontColor = ImageColorAllocate($image, 88, 88, 90);
         imagefill($image, 0, 0, $white);
         imagecolortransparent($image, $white);
         imagestring($image, 3, 0, 0, $mail, $fontColor);
         imagepng($image, $filename);
         imagedestroy($image);
     }
     return $this->Html->image($url, $imgAttr);
 }

function erzeugePlotBalkenHorizontal($width, $barHeight, $filename, $bars)
{
    $height = $barHeight * count($bars);
    $image = imagecreatetruecolor($width, $height);
    $black = imagecolorallocate($image, 0, 0, 0);
    imagefilledrectangle($image, 0, 0, $width, $height, imagecolorallocate($image, 255, 255, 255));
    $y = 0;
    foreach ($bars as $bar) {
        $c1 = mt_rand(100, 220);
        $c2 = mt_rand(100, 220);
        $c3 = mt_rand(100, 220);
        $color = imagecolorallocate($image, $c1, $c2, $c3);
        $w = $bar["wert"] * $width;
        imagefilledrectangle($image, 0, $y, $w, $y + $barHeight, $color);
        imagerectangle($image, 0, $y, $w, $y + $barHeight, $black);
        if (imagefontwidth(3) * strlen($bar["beschriftung"]) > $w + 8) {
            imagestring($image, 3, $w + 4, $y + 3, $bar["beschriftung"], $black);
        } else {
            imagestring($image, 3, 4, $y + 3, $bar["beschriftung"], $black);
        }
        $y += $barHeight;
    }
    imagerectangle($image, 0, 0, $width - 1, $height - 1, $black);
    imagepng($image, $filename, 0);
}

function create_image()
{
    // *** Generate a passcode using md5
    //	(it will be all lowercase hex letters and numbers ***
    $md5 = md5(rand(0, 9999));
    $pass = substr($md5, 10, 5);
    // *** Set the session cookie so we know what the passcode is ***
    $_SESSION["pass"] = $pass;
    // *** Create the image resource ***
    $image = ImageCreatetruecolor(100, 20);
    // *** We are making two colors, white and black ***
    $clr_white = ImageColorAllocate($image, 255, 255, 255);
    $clr_black = ImageColorAllocate($image, 0, 0, 0);
    // *** Make the background black ***
    imagefill($image, 0, 0, $clr_black);
    // *** Set the image height and width ***
    imagefontheight(15);
    imagefontwidth(15);
    // *** Add the passcode in white to the image ***
    imagestring($image, 5, 30, 3, $pass, $clr_white);
    // *** Throw in some lines to trick those cheeky bots! ***
    imageline($image, 5, 1, 50, 20, $clr_white);
    imageline($image, 60, 1, 96, 20, $clr_white);
    // *** Return the newly created image in jpeg format ***
    return imagejpeg($image);
    // *** Just in case... ***
    imagedestroy($image);
}

 private function _createScaleBarMap($label, $length)
 {
     $font = 1;
     $fullLabel = $label . ' ' . $this->_getLengthUnit();
     $stringWidth = imagefontwidth($font) * strlen($fullLabel);
     if ($stringWidth > $length) {
         $width = $stringWidth;
     } else {
         $width = $length;
     }
     $width += 20;
     $height = imagefontheight($font) + 20;
     //@todo drawing of scalebar not work proper for some version GD, rememer to fix it
     $scaleBarImage = imagecreatetruecolor($width, $height);
     $transparentColor = imagecolorat($scaleBarImage, 0, 0);
     imagecolortransparent($scaleBarImage, $transparentColor);
     $transparent = imagecolorallocatealpha($scaleBarImage, 0, 0, 0, 127);
     imagefilledrectangle($scaleBarImage, 0, 0, $width, $height, $transparent);
     $barPosX = round(($width - $length) / 2);
     $barPosY = $height - 5;
     $color = imagecolorallocate($scaleBarImage, 1, 0, 0);
     imageline($scaleBarImage, $barPosX, $barPosY, $barPosX + $length, $barPosY, $color);
     imageline($scaleBarImage, $barPosX, $barPosY - 3, $barPosX, $barPosY + 3, $color);
     imageline($scaleBarImage, $barPosX + $length, $barPosY - 3, $barPosX + $length, $barPosY + 3, $color);
     $stringPosX = round(($width - $stringWidth) / 2);
     $stringPoxY = 10;
     imagestring($scaleBarImage, $font, $stringPosX, $stringPoxY, $fullLabel, $color);
     return $scaleBarImage;
 }

 /**
  * @name 				   : makeImageF
  * 
  * Function for create image from text with selected font.
  * 
  * @param String $text     : String to convert into the Image.
  * @param String $font     : Font name of the text.
  * @param int    $W        : Width of the Image.
  * @param int    $H        : Hight of the Image.
  * @param int	 $X        : x-coordinate of the text into the image.
  * @param int    $Y        : y-coordinate of the text into the image.
  * @param int    $fsize    : Font size of text.
  * @param array  $color	   : RGB color array for text color.
  * @param array  $bgcolor  : RGB color array for background.
  * 
  */
 public function createText($text, $font = "CENTURY.TTF", $W = 200, $H = 20, $X = 0, $Y = 100, $fsize = 20, $color = array(0xff, 0xff, 0xff), $bgcolor = array(0xff, 0xff, 0xff))
 {
     $text_color = imagecolorallocate($this->im, $color[0], $color[1], $color[2]);
     $fontwidth = imagefontwidth($fsize);
     $center = imagesx($this->im) / 2 - $fontwidth * (strlen($text) / 2);
     imagettftext($this->im, $fsize, $X, $center - 20, $fsize + 15, $text_color, $font, $text);
     //imagestring($im, 5, 20, 20, 'See my "selfie review \n @ Robert Cafe"', $textcolor);
 }

 public function build($text = '', $showText = true, $fileName = null)
 {
     if (trim($text) <= ' ') {
         throw new exception('barCode::build - must be passed text to operate');
     }
     if (!($fileType = $this->outMode[$this->mode])) {
         throw new exception("barCode::build - unrecognized output format ({$this->mode})");
     }
     if (!function_exists("image{$this->mode}")) {
         throw new exception("barCode::build - unsupported output format ({$this->mode} - check phpinfo)");
     }
     $text = strtoupper($text);
     $dispText = "* {$text} *";
     $text = "*{$text}*";
     // adds start and stop chars
     $textLen = strlen($text);
     $barcodeWidth = $textLen * (7 * $this->bcThinWidth + 3 * $this->bcThickWidth) - $this->bcThinWidth;
     $im = imagecreate($barcodeWidth, $this->bcHeight);
     $black = imagecolorallocate($im, 0, 0, 0);
     $white = imagecolorallocate($im, 255, 255, 255);
     imagefill($im, 0, 0, $white);
     $xpos = 0;
     for ($idx = 0; $idx < $textLen; $idx++) {
         if (!($char = $text[$idx])) {
             $char = '-';
         }
         for ($ptr = 0; $ptr <= 8; $ptr++) {
             $elementWidth = $this->codeMap[$char][$ptr] ? $this->bcThickWidth : $this->bcThinWidth;
             if (($ptr + 1) % 2) {
                 imagefilledrectangle($im, $xpos, 0, $xpos + $elementWidth - 1, $this->bcHeight, $black);
             }
             $xpos += $elementWidth;
         }
         $xpos += $this->bcThinWidth;
     }
     if ($showText) {
         $pxWid = imagefontwidth($this->fontSize) * strlen($dispText) + 10;
         $pxHt = imagefontheight($this->fontSize) + 2;
         $bigCenter = $barcodeWidth / 2;
         $textCenter = $pxWid / 2;
         imagefilledrectangle($im, $bigCenter - $textCenter, $this->bcHeight - $pxHt, $bigCenter + $textCenter, $this->bcHeight, $white);
         imagestring($im, $this->fontSize, $bigCenter - $textCenter + 5, $this->bcHeight - $pxHt + 1, $dispText, $black);
     }
     if (!$fileName) {
         header("Content-type:  image/{$fileType}");
     }
     switch ($this->mode) {
         case 'gif':
             imagegif($im, $fileName);
         case 'png':
             imagepng($im, $fileName);
         case 'jpeg':
             imagejpeg($im, $fileName);
         case 'wbmp':
             imagewbmp($im, $fileName);
     }
     imagedestroy($im);
 }

 private function CenterTextBanner($z, $y, $zone)
 {
     $a = strlen($z);
     $b = imagefontwidth($y);
     $c = $a * $b;
     $d = $zone - $c;
     $e = $d / 2;
     return $e;
 }

 public function getMinSize()
 {
     $fts_len = strlen((string) $this->unit) + 1;
     $this->offset = imagefontwidth(2) * $fts_len;
     $this->osSum = $this->offset + $this->space;
     $this->omSum = $this->offset + $this->margin;
     $this->xLen = $this->width - $this->osSum - $this->omSum;
     $this->yLen = $this->height - $this->osSum - $this->omSum;
     return $this->osSum + $this->omSum;
 }