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Changeset 2184

Timestamp:

08/30/2007 11:18:16 AM (17 months ago)

Author:

xue

Message:

Added text shadow option.

Location:

trunk

Files:

r2182	r2184
21	21
22	22	<p>
23		To specify the appearance of the generated token image, set <tt>TokenImageTheme</tt> 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 <tt>TokenFontSize</tt>. In particular, the image width is proportional to the font size. You may also set <tt>Width</tt> to scale the generated image to your desired size, but the scaled image may not look good. By setting <tt>ChangingTokenBackground</tt> to true, the image background of the token will be variating even though the token is the same during postbacks.
	23	To specify the appearance of the generated token image, set <tt>TokenImageTheme</tt> 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 <tt>TokenFontSize</tt>. In particular, the image width is proportional to the font size. You may also set <tt>Width</tt> to scale the generated image to your desired size, but the scaled image may not look good. By setting <tt>ChangingTokenBackground</tt> to true, the image background of the token will be variating even though the token is the same during postbacks.
24	24	</p>
25	25

r2175	r2184
7	7	if(!$this->IsPostBack)
8	8	{
9		$this->CaptchaList->DataSource=range(0,31);
	9	$this->CaptchaList->DataSource=range(0,63);
10	10	$this->CaptchaList->dataBind();
11	11	}

r2182	r2184
33	33	*
34	34	* To specify the appearance of the generated token image, set {@link setTokenImageTheme TokenImageTheme}
35		* to be an integer between 0 and 31. And to adjust the generated image size, set {@link setTokenFontSize TokenFontSize}
	35	* to be an integer between 0 and 63. And to adjust the generated image size, set {@link setTokenFontSize TokenFontSize}
36	36	* (you may also set {@link TWebControl::setWidth Width}, but the scaled image may not look good.)
37	37	* By setting {@link setChangingTokenBackground ChangingTokenBackground} to true, the image background
…	…
92	92	* Bit 3: whether we should add some scribbles to the image (1) or not (0).
93	93	* Bit 4: whether the image background should be morphed (1) or not (0).
94		* @param integer the theme of the token image. It must be an integer between 0 and 31.
	94	* Bit 5: whether the token text should cast a shadow (1) or not (0).
	95	* @param integer the theme of the token image. It must be an integer between 0 and 63.
95	96	*/
96	97	public function setTokenImageTheme($value)
97	98	{
98	99	$value=TPropertyValue::ensureInteger($value);
99		if($value>=0 && $value<=31)
	100	if($value>=0 && $value<=63)
100	101	$this->setViewState('TokenImageTheme',$value,0);
101	102	else
102		throw new TConfigurationException('captcha_tokenimagetheme_invalid',0,31);
	103	throw new TConfigurationException('captcha_tokenimagetheme_invalid',0,63);
103	104	}
104	105

r2182	r2184
16	16	define('THEME_HAS_SCRIBBLE',0x0008);
17	17	define('THEME_MORPH_BACKGROUND',0x0010);
	18	define('THEME_SHADOWED_TEXT',0x0020);
18	19
19	20	require_once(dirname(__FILE__).'/captcha_key.php');
…	…
103	104	imagefilter($image,IMG_FILTER_GAUSSIAN_BLUR);
104	105
	106	$hasShadow=($theme&THEME_SHADOWED_TEXT);
105	107	for($i=0;$i<$length;$i++)
106	108	{
107	109	$color=imagecolorallocate($image,rand(150,220),rand(150,220),rand(150,220));
108		imagettftext($image,rand($fontWidth-10,$fontWidth),rand(-30, 30),$padding+$i*$fontWidth,rand($fontHeight-15,$fontHeight-10),$color,$font,$token[$i]);
	110	$size=rand($fontWidth-10,$fontWidth);
	111	$angle=rand(-30,30);
	112	$x=$padding+$i*$fontWidth;
	113	$y=rand($fontHeight-15,$fontHeight-10);
	114	imagettftext($image,$size,$angle,$x,$y,$color,$font,$token[$i]);
	115	if($hasShadow)
	116	imagettftext($image,$size,$angle,$x+2,$y+2,$color,$font,$token[$i]);
109	117	imagecolordeallocate($image,$color);
110	118	}