-To specify the appearance of the generated token image, set TokenImageTheme to be an integer between 0 and 31. You may try the following example to see how this value affects the generated token image. The size of the generated token image is determined by TokenFontSize. In particular, the image width is proportional to the font size. You may also set Width to scale the generated image to your desired size, but the scaled image may not look good. By setting ChangingTokenBackground to true, the image background of the token will be variating even though the token is the same during postbacks. +To specify the appearance of the generated token image, set TokenImageTheme to be an integer between 0 and 63. You may try the following example to see how this value affects the generated token image. The size of the generated token image is determined by TokenFontSize. In particular, the image width is proportional to the font size. You may also set Width to scale the generated image to your desired size, but the scaled image may not look good. By setting ChangingTokenBackground to true, the image background of the token will be variating even though the token is the same during postbacks.
diff --git a/demos/quickstart/protected/pages/Controls/Samples/TCaptcha/Home.php b/demos/quickstart/protected/pages/Controls/Samples/TCaptcha/Home.php index 4d54ce87..6965bbbd 100644 --- a/demos/quickstart/protected/pages/Controls/Samples/TCaptcha/Home.php +++ b/demos/quickstart/protected/pages/Controls/Samples/TCaptcha/Home.php @@ -6,7 +6,7 @@ class Home extends TPage { if(!$this->IsPostBack) { - $this->CaptchaList->DataSource=range(0,31); + $this->CaptchaList->DataSource=range(0,63); $this->CaptchaList->dataBind(); } } diff --git a/framework/Web/UI/WebControls/TCaptcha.php b/framework/Web/UI/WebControls/TCaptcha.php index 48e57b9e..55cbc940 100644 --- a/framework/Web/UI/WebControls/TCaptcha.php +++ b/framework/Web/UI/WebControls/TCaptcha.php @@ -32,7 +32,7 @@ Prado::using('System.Web.UI.WebControls.TImage'); * be tested with on the server side, and the latter says when a generated token will expire. * * To specify the appearance of the generated token image, set {@link setTokenImageTheme TokenImageTheme} - * to be an integer between 0 and 31. And to adjust the generated image size, set {@link setTokenFontSize TokenFontSize} + * to be an integer between 0 and 63. And to adjust the generated image size, set {@link setTokenFontSize TokenFontSize} * (you may also set {@link TWebControl::setWidth Width}, but the scaled image may not look good.) * By setting {@link setChangingTokenBackground ChangingTokenBackground} to true, the image background * of the token will be variating even though the token is the same during postbacks. @@ -91,15 +91,16 @@ class TCaptcha extends TImage * Bit 2: whether we should add a grid to the image (1) or not (0). * Bit 3: whether we should add some scribbles to the image (1) or not (0). * Bit 4: whether the image background should be morphed (1) or not (0). - * @param integer the theme of the token image. It must be an integer between 0 and 31. + * Bit 5: whether the token text should cast a shadow (1) or not (0). + * @param integer the theme of the token image. It must be an integer between 0 and 63. */ public function setTokenImageTheme($value) { $value=TPropertyValue::ensureInteger($value); - if($value>=0 && $value<=31) + if($value>=0 && $value<=63) $this->setViewState('TokenImageTheme',$value,0); else - throw new TConfigurationException('captcha_tokenimagetheme_invalid',0,31); + throw new TConfigurationException('captcha_tokenimagetheme_invalid',0,63); } /** diff --git a/framework/Web/UI/WebControls/assets/captcha.php b/framework/Web/UI/WebControls/assets/captcha.php index 26ed44f4..48c39cb2 100644 --- a/framework/Web/UI/WebControls/assets/captcha.php +++ b/framework/Web/UI/WebControls/assets/captcha.php @@ -15,6 +15,7 @@ define('THEME_NOISY_BACKGROUND',0x0002); define('THEME_HAS_GRID',0x0004); define('THEME_HAS_SCRIBBLE',0x0008); define('THEME_MORPH_BACKGROUND',0x0010); +define('THEME_SHADOWED_TEXT',0x0020); require_once(dirname(__FILE__).'/captcha_key.php'); @@ -102,10 +103,17 @@ function displayToken($token,$fontSize,$theme) if(function_exists('imagefilter')) imagefilter($image,IMG_FILTER_GAUSSIAN_BLUR); + $hasShadow=($theme&THEME_SHADOWED_TEXT); for($i=0;$i<$length;$i++) { $color=imagecolorallocate($image,rand(150,220),rand(150,220),rand(150,220)); - imagettftext($image,rand($fontWidth-10,$fontWidth),rand(-30, 30),$padding+$i*$fontWidth,rand($fontHeight-15,$fontHeight-10),$color,$font,$token[$i]); + $size=rand($fontWidth-10,$fontWidth); + $angle=rand(-30,30); + $x=$padding+$i*$fontWidth; + $y=rand($fontHeight-15,$fontHeight-10); + imagettftext($image,$size,$angle,$x,$y,$color,$font,$token[$i]); + if($hasShadow) + imagettftext($image,$size,$angle,$x+2,$y+2,$color,$font,$token[$i]); imagecolordeallocate($image,$color); } -- cgit v1.2.3