通过文字传递创建的图形按钮 -pc6资讯

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通过文字传递创建的图形按钮 时间：2004/11/7 3:16:00来源：本站整理作者：蓝点我要评论(0): 通过文字传递创建的图形按钮,详细说明请看文内英文说明

    /* PHP3 Button generator, (c) 2000 by IzzySoft (izzysoft@buntspecht.de)

    * License: GPL (and it would be nice to drop me a note that you find it

    * useful - if you use it. And, of course, I am very interested in

    * enhancements you made to the script!

    *

    * Purpose: generate buttons with text passed by parameter.

    *

    * possible parameters to the script:

    *button- input gif image. Just the part of the filename before the dot.

    *The specified image file is expected in the same directory

    *as this script resides in.

    *font - font to use (1 - 5; 1 is very small, 3 medium, 5 normal size.

    *The script will automatically use a smaller font if text is

    *too long for selected size.) Default: 5

    *text - the text to be put on the button. Will be centered.

    *textcolor - color for the letters. Default: white.

    *in this example code only blue, white and black are defined;

    *but you can add custom colors easily.

    *width,heigth - width and heigth of the button. Useful only if target

    *button should have different size than source image.

    *

    * Example for usage:

    *

    * will look for yellow.gif and put the string "Example" on it.

    *

    * I use to have three buttons I normally generate (one displays selected

    * item, one is for mouseover(), and one is the default button). The source

    * images are yellow.gif, white.gif and blue.gif - so my script assumes

    * blue.gif as default if "button=" not specified - you may wish to change

    * this below, it's easy ;)

    */

    // ===========================[ check fo

    //     r parameters and/or set defaults ]===

    if (($font == "") || ($font > 5) || ($font < 1)) { $font = 5; }

    if ($text == "") { $text="Moin!"; }// button text

    if ($textcolor == "") {// color for the letters

    switch ($button) {

    case "yellow":

    case "white":

    $textcolor = "black";

    break;

    default:

    if ($button == "") { $button = "blue"; }

    $textcolor = "white";

    break;

    }

    } // textcolor end

    $im_info = getimagesize("$button.gif"); // button size

    if ($width == "") {

    if ($im_info == "") {

    $buttonwidth = 125;

    } else {

    $buttonwidth = "$im_info[0]";

    }

    } else {

    $buttonwidth = $width;

    }

    if ($heigth == "") {

    if ($im_info == "") {

    $buttonheigth = 30;

    } else {

    $buttonheigth = "$im_info[1]";

    }

    } else {

    $buttonheigth = $heigth;

    }

    $vmidth = ceil($buttonheigth / 2);

    // =====================================

    //     ===[ now lets define some colors ]===



    $white = "255,255,255";

    $black = "0,0,0";

    $blue = "0x2c,0c6d,0xaf";

    // =====================================

    //     =============[ build color array ]===

    // now we put the needed color into an a

    //     rray (if e.g. "$textcolor=white",

    // the array $textcolor_array represents

    //     "white")

    $textcolor_array = explode(",", $$textcolor);

    // =======================[ calculate po

    //     sition of the text on the button ]===

    do {

    $textwidth = strlen($text) * imagefontwidth($font);

    $x = ($buttonwidth - $textwidth) / 2; $x = ceil($x);

    $y = $vmidth - (imagefontheight($font) / 2);

    $font--;

    } while (($x < 0) && ($font > 0)); $font++;

    // =====================================

    //     ======[ now we create the button ]===

    if (isset($width) || isset($heigth)) {// size change expected?

    $ima = imagecreatefromgif("$button.gif");// open input gif

    $im = imagecreate($buttonwidth,$buttonheigth); // create img in desired size

    $uglybg = ImageColorAllocate($im,0xf4,0xb2,0xe5);

    ImageRectangle($im,0,0,$buttonwidth,$buttonheigth,$uglybg);

    $dummy = imagecopyresized($im,$ima,0,0,0,0,$buttonwidth,$buttonheigth,$im_info[0],$im_info[1]);

    if ($dummy == "") {

    ImageDestroy($im); // if it didn't work, create default below instead

    } else {;}

    ImageDestroy($ima);

    ImageColorTransparent($im,$uglybg);

    } else {

    $im = imagecreatefromgif("$button.gif");// open input gif

    }

    if ($im == "") { $im = imagecreate($buttonwidth,$buttonheigth); // if input gif not found,

    $rblue = ImageColorAllocate($im, 0x2c,0x6D,0xAF);// create a default box

    ImageRectangle($im,0,0,200,100,$rblue);

    }

    $color = ImageColorAllocate($im, $textcolor_array[0], $textcolor_array[1], $textcolor_array[2]); // allocate the color

    imagestring($im, $font, $x, $y, "$text", $color); // put the text on it

    ImageGif($im);// send button to browser

    ImageDestroy($im);// free the used memory

    ?>

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