PHP imageColorAllocate函数代码示例

 private function getCreateImage()
 {
     $this->image = imageCreate($this->width, $this->height);
     $back = imageColorAllocate($this->image, 255, 255, 255);
     $border = imagecolorallocate($this->image, 0, 0, 0);
     imageRectangle($this->image, 0, 0, $this->width - 1, $this->height - 1, $border);
 }

 /**
  * Make the image greyscale
  *
  * @param Asido_TMP &$tmp
  * @return boolean
  * @access protected
  */
 function __grayscale(&$tmp)
 {
     // the longer path: do it pixel by pixel
     //
     if (parent::__grayscale(&$tmp)) {
         return true;
     }
     // create 256 color palette
     //
     $palette = array();
     for ($c = 0; $c < 256; $c++) {
         $palette[$c] = imageColorAllocate($tmp->target, $c, $c, $c);
     }
     // read origonal colors pixel by pixel
     //
     for ($y = 0; $y < $tmp->image_height; $y++) {
         for ($x = 0; $x < $tmp->image_width; $x++) {
             $rgb = imageColorAt($tmp->target, $x, $y);
             $r = $rgb >> 16 & 0xff;
             $g = $rgb >> 8 & 0xff;
             $b = $rgb & 0xff;
             $gs = $r * 0.299 + $g * 0.587 + $b * 0.114;
             imageSetPixel($tmp->target, $x, $y, $palette[$gs]);
         }
     }
     return true;
 }

function setnoise($image, $width, $height, $back, $noisenum)
{
    for ($i = 0; $i < $noisenum; $i++) {
        $randColor = imageColorAllocate($image, rand(0, 255), rand(0, 255), rand(0, 255));
        imageSetPixel($image, rand(0, $width), rand(0, $height), $randColor);
    }
}

 public function createImage($text = '', $fontSize = 5)
 {
     // GD's built-in fonts are numbered from 1 - 5
     $font_size = $fontSize;
     // Calculate the appropriate image size
     $image_height = intval(imageFontHeight($font_size) * 2);
     $image_width = intval(strlen($text) * imageFontWidth($font_size) * 1.3);
     // Create the image
     $image = imageCreate($image_width, $image_height);
     // Create the colors to use in the image
     // gray background
     $back_color = imageColorAllocate($image, 216, 216, 216);
     // blue text
     $text_color = imageColorAllocate($image, 0, 0, 255);
     // black border
     $rect_color = imageColorAllocate($image, 0, 0, 0);
     // Figure out where to draw the text
     // (Centered horizontally and vertically
     $x = ($image_width - imageFontWidth($font_size) * strlen($text)) / 2;
     $y = ($image_height - imageFontHeight($font_size)) / 2;
     // Draw the text
     imageString($image, $font_size, $x, $y, $text, $text_color);
     // Draw a black border
     imageRectangle($image, 0, 0, imageSX($image) - 1, imageSY($image) - 1, $rect_color);
     // Send the image to the browser
     header('Content-Type: image/png');
     imagePNG($image);
     imageDestroy($image);
 }

 /**
  * 显示验证码
  */
 function create()
 {
     $this->image = imageCreate($this->width, $this->height);
     $this->back = $this->getColor($this->bgcolor);
     imageFilledRectangle($this->image, 0, 0, $this->width, $this->height, $this->back);
     $size = $this->width / $this->charLen - 4;
     if ($size > $this->height) {
         $size = $this->height;
     }
     $left = ($this->width - $this->charLen * ($size + $size / 10)) / $size + 5;
     $code = '';
     for ($i = 0; $i < $this->charLen; $i++) {
         $randKey = rand(0, count($this->arrChr) - 1);
         $randText = $this->arrChr[$randKey];
         $code .= $randText;
         $textColor = imageColorAllocate($this->image, rand(0, 100), rand(0, 100), rand(0, 100));
         $font = $this->fontPath . '/' . rand(1, 5) . ".ttf";
         $randsize = rand($size - $size / 10, $size + $size / 10);
         $location = $left + ($i * $size + $size / 10);
         @imagettftext($this->image, $randsize, rand(-18, 18), $location, rand($size - $size / 10, $size + $size / 10) + 2, $textColor, $font, $randText);
     }
     if ($this->showNoisePix == true) {
         $this->setNoisePix();
     }
     if ($this->showNoiseLine == true) {
         $this->setNoiseLine();
     }
     if ($this->showBorder == true) {
         $this->borderColor = $this->getColor($this->borderColor);
         imageRectangle($this->image, 0, 0, $this->width - 1, $this->height - 1, $this->borderColor);
     }
     $this->text = strtolower($code);
 }

 function createAICode()
 {
     global $bBlog;
     $code = $this->randomString();
     $bBlog->db->query("\n\tDELETE FROM `" . T_CHECKCODE . "` WHERE `timestamp`+3000<NOW()");
     $bBlog->db->query("\n\tINSERT INTO `" . T_CHECKCODE . "` ( `id` , `checksum` , `timestamp` )\n\tVALUES ('', '" . md5($code . $_SERVER["REMOTE_ADDR"]) . "', NOW( ))");
     if (!isset($plugins_dir)) {
         $plugins_dir = dirname(__FILE__) . '/';
     }
     $fontfile = "atomicclockradio.ttf";
     $font = $plugins_dir . $fontfile;
     $im = @imageCreate(110, 50) or die("Cannot Initialize new GD image stream");
     $background_color = imageColorAllocate($im, 195, 217, 255);
     $text_color = imageColorAllocate($im, 168, 18, 19);
     ImageTTFText($im, 20, 5, 18, 38, $text_color, $font, $code);
     // Date in the past
     header("Expires: Thu, 28 Aug 1997 05:00:00 GMT");
     // always modified
     $timestamp = gmdate("D, d M Y H:i:s");
     header("Last-Modified: " . $timestamp . " GMT");
     // HTTP/1.1
     header("Cache-Control: no-store, no-cache, must-revalidate");
     header("Cache-Control: post-check=0, pre-check=0", false);
     // HTTP/1.0
     header("Pragma: no-cache");
     // dump out the image
     header("Content-type: image/png");
     ImagePNG($im);
 }

 function Graph($res)
 {
     if ($res == "svga") {
         $wd = "800";
         $ht = "600";
     } elseif ($res == "xga") {
         $wd = "1024";
         $ht = "768";
     } elseif ($res == "sxga") {
         $wd = "1280";
         $ht = "1024";
     } elseif ($res == "uxga") {
         $wd = "1600";
         $ht = "1200";
     } else {
         $wd = "640";
         $ht = "480";
     }
     $this->img = imageCreate($wd, $ht);
     $this->wte = imageColorAllocate($this->img, 255, 255, 255);
     $this->blk = imageColorAllocate($this->img, 0, 0, 0);
     $this->gry = imageColorAllocate($this->img, 100, 100, 100);
     $this->red = imageColorAllocate($this->img, 150, 0, 0);
     $this->grn = imageColorAllocate($this->img, 0, 150, 0);
     $this->blu = imageColorAllocate($this->img, 0, 0, 150);
     imagestring($this->img, 2, 5, 5, $res, $this->blu);
 }

function king_def()
{
    global $king;
    header("Cache-Control: no-cache, must-revalidate");
    // HTTP/1.1
    header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
    // 过去的时间
    header("Content-type: image/png");
    $salt = kc_get('salt', 1, 1);
    $width = $king->config('verifywidth');
    //图片长度
    $height = $king->config('verifyheight');
    //图片高度
    $size = $king->config('verifysize');
    //文字大小
    $num = $king->config('verifynum');
    //文字数量
    $content = $king->config('verifycontent');
    //随机字符
    $array_content = explode('|', $content);
    $array_content = array_diff($array_content, array(null));
    $array_font = kc_f_getdir('system/verify_font', 'ttf|ttc');
    $str = '';
    $img = imageCreate($width, $height);
    //创建一个空白图像
    imageFilledRectangle($img, 0, 0, $width, $height, imagecolorallocate($img, 255, 255, 255));
    //写字
    for ($i = 0; $i < $num; $i++) {
        $code = $array_content[array_rand($array_content)];
        $str .= $code;
        //验证码字符
        $color = imageColorAllocate($img, rand(0, 128), rand(0, 128), rand(0, 128));
        $font = 'verify_font/' . $array_font[array_rand($array_font)];
        //随机读取一个字体
        $left = rand(round($size * 0.2), round($size * 0.4)) + $i * $size;
        imagettftext($img, rand(round($size * 0.7), $size), rand(-20, 20), $left, rand(round($size * 1.2), $size * 1.4), $color, $font, $code);
    }
    //画星号
    $max = $width * $height / 400;
    for ($i = 0; $i < $max; $i++) {
        imagestring($img, 15, rand(0, $width), rand(0, $height), '*', rand(192, 250));
    }
    //画点
    $max = $width * $height / 40;
    for ($i = 0; $i < $max; $i++) {
        imageSetPixel($img, rand(0, $width), rand(0, $height), rand(1, 200));
    }
    //画线
    $max = $width * $height / 800;
    for ($i = 0; $i < $max; $i++) {
        imageline($img, rand(0, $width), rand(0, $height), rand(0, $width), rand(0, $height), rand(0, 255));
    }
    //写验证码到verify中
    $verify = new KC_Verify_class();
    $verify->Put($salt, $str);
    imagePng($img);
    imageDestroy($img);
    $verify->Clear();
}

 function create($text)
 {
     $img = imagecreatefrompng("skins/icon.png");
     $black = imageColorAllocate($img, 0, 0, 0);
     $white = imageColorAllocate($img, 255, 255, 255);
     imageString($img, 5, 20, 3, $text, $white);
     imagePNG($img);
 }

 private function getCreateImage()
 {
     //用来创建图像资源，并初使化背影
     $this->image = imagecreatetruecolor($this->width, $this->height);
     $backColor = imagecolorallocate($this->image, rand(225, 255), rand(225, 255), rand(225, 255));
     //背景色（随机）
     @imagefill($this->image, 0, 0, $backColor);
     $border = imageColorAllocate($this->image, 0, 0, 0);
     imageRectangle($this->image, 0, 0, $this->width - 1, $this->height - 1, $border);
 }

function code()
{
    $fontSize = 20;
    //定义字体大小
    $length = 5;
    //定义字符串长度
    $strNum = GetVerify($length);
    //获取一个随机字符串
    $_SESSION['verify'] = $strNum;
    //付值给session
    $width = 90;
    //定义图片宽度
    $height = 30;
    //定义图片高度
    $im = imagecreate($width, $height);
    //生成一张指定宽高的图片
    $backgroundcolor = imagecolorallocate($im, 255, 255, 255);
    //生成背景色
    $frameColor = imageColorAllocate($im, 150, 150, 150);
    //生成边框色
    $font = './system/fonts/arial.ttf';
    //提取字体文件，开始写字
    for ($i = 0; $i < $length; $i++) {
        $charY = ($height + 9) / 2 + rand(-1, 1);
        //定义字符Y坐标
        $charX = $i * 15 + 8;
        //定义字符X坐标
        //生成字符颜色
        $text_color = imagecolorallocate($im, mt_rand(50, 200), mt_rand(50, 128), mt_rand(50, 200));
        $angle = rand(-20, 20);
        //生成字符角度
        //写入字符
        imageTTFText($im, $fontSize, $angle, $charX, $charY, $text_color, $font, $strNum[$i]);
    }
    for ($i = 0; $i <= 5; $i++) {
        //循环画背景线
        $linecolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
        $linex = mt_rand(1, $width - 1);
        $liney = mt_rand(1, $height - 1);
        imageline($im, $linex, $liney, $linex + mt_rand(0, 4) - 2, $liney + mt_rand(0, 4) - 2, $linecolor);
    }
    for ($i = 0; $i <= 32; $i++) {
        //循环画背景点,生成麻点效果
        $pointcolor = imagecolorallocate($im, mt_rand(0, 255), mt_rand(0, 255), mt_rand(0, 255));
        imagesetpixel($im, mt_rand(1, $width - 1), mt_rand(1, $height - 1), $pointcolor);
    }
    imagerectangle($im, 0, 0, $width - 1, $height - 1, $frameColor);
    //画边框
    //ob_clean();
    //header('Content-type: image/png');
    imagepng($im);
    imagedestroy($im);
    return $strNum;
}

 function GenColors()
 {
     $colorR = rand(100, 230);
     $colorG = rand(100, 230);
     $colorB = rand(100, 230);
     $colorG2 = (rand(100, 230) + $colorG) / 2;
     $colorB2 = (rand(100, 230) + $colorB) / 2;
     $this->colorBg = imageColorAllocate($this->img, $colorR, $colorG, $colorB);
     $this->colorTxt[0] = imageColorAllocate($this->img, $colorR - 80, $colorG2 - 70, $colorB - 80);
     $this->colorTxt[1] = imageColorAllocate($this->img, $colorR - 70, $colorG - 80, $colorB2 - 70);
     $this->colorLine = imageColorAllocate($this->img, $colorR - 10, $colorG2 - 20, $colorB2 - 10);
 }

 protected function color(array $color, $image = false)
 {
     if (!is_array($image)) {
         $image = $this->map;
     }
     list($r, $g, $b) = $color;
     $colorRes = imagecolorexact($image['image'], $r, $g, $b);
     if ($colorRes == -1) {
         $colorRes = imageColorAllocate($image['image'], $r, $g, $b);
     }
     return $colorRes;
 }

function text2image($height, $text)
{
header("Content-type: image/png");
$width = $height * strlen($text)/ 5 * 2;
$font = "/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf";
$image = imageCreate($width, $height);
$backgroundColor = imageColorAllocate($image, 255, 255, 255);
$textColor = imageColorAllocate($image, 0, 0, 0);
imagefttext($image, $height/2, 0, 0, $height/10*9, $textColor, $font, $text); 
imageInterlace($image, 1);
imageColorTransparent($image, $backgroundColor);
imagePNG($image);
}

 public function execute()
 {
     $cachePath = SJB_BASE_DIR . "system/cache/markers";
     if (SJB_Request::isAjax()) {
         $fileSystem = new SJB_Filesystem();
         $markers = $fileSystem->getFileNames($cachePath);
         $response = count($markers) ? json_encode($markers) : '';
         exit($response);
     }
     $grayImage = SJB_BASE_DIR . "templates/_system/main/images/marker_gray.gif";
     $greenImage = SJB_BASE_DIR . "templates/_system/main/images/marker_green.gif";
     $orangeImage = SJB_BASE_DIR . "templates/_system/main/images/marker_orange.gif";
     $blueImage = SJB_BASE_DIR . "templates/_system/main/images/marker_blue.gif";
     $pinkImage = SJB_BASE_DIR . "templates/_system/main/images/marker_pink.gif";
     $type = SJB_Request::getVar('type', 'Job');
     $text = SJB_Request::getVar('text', '');
     $filename = '';
     $assets = array('Job' => $orangeImage, 'priority' => $orangeImage, 'indeed' => $blueImage, 'simplyHired' => $greenImage, 'beyond' => $grayImage, 'Resume' => $orangeImage);
     if (array_key_exists($type, $assets)) {
         $filename = $assets[$type];
     } else {
         $filename = $grayImage;
     }
     $cacheFilename = $cachePath . "/marker_" . $type . '_' . $text . ".gif";
     $img = null;
     if (!file_exists($cacheFilename)) {
         if ($filename == $pinkImage || !empty($text) && is_string($text) && !empty($filename)) {
             $img = imagecreatefromgif($filename);
             $imageSx = imagesx($img);
             $imageSy = imagesy($img);
             $fontSize = 8;
             $textLen = strlen($text);
             $black = imageColorAllocate($img, 0, 0, 0);
             $white = imageColorAllocate($img, 255, 255, 255);
             if (!empty($text)) {
                 imagettftext($img, $fontSize, 0, $imageSx / 2 - floor($fontSize / 2 * $textLen) + 2, 13, $black, SJB_BASE_DIR . "templates/_system/main/images/arial.ttf", $text);
             }
             if (!file_exists($cachePath)) {
                 mkdir($cachePath, 0777);
             }
             imagegif($img, $cachePath . "/marker_" . $type . '_' . $text . ".gif");
         }
     } else {
         $img = imagecreatefromgif($cacheFilename);
     }
     if (!is_null($img)) {
         header("Content-type: image/gif");
         imagegif($img);
     }
     exit;
 }