mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-07-13 13:42:44 +08:00
91 lines
8.6 KiB
HTML
91 lines
8.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Converts a palette based image to true color</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.imagepalettetotruecolor" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">imagepalettetotruecolor</h1>
|
|
<p class="verinfo">(PHP 5 >= 5.5.0, PHP 7)</p><p class="refpurpose"><span class="refname">imagepalettetotruecolor</span> — <span class="dc-title">Converts a palette based image to true color</span></p>
|
|
|
|
</div>
|
|
<div class="refsect1 description" id="refsect1-function.imagepalettetotruecolor-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>imagepalettetotruecolor</strong></span>
|
|
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$src</code></span>
|
|
) : <span class="type">bool</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
Converts a palette based image, created by functions like
|
|
<span class="function"><a href="imagecreate.html" class="function">imagecreate()</a></span> to a true color image, like
|
|
<span class="function"><a href="imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.imagepalettetotruecolor-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<p class="para">
|
|
<dl>
|
|
|
|
<dt>
|
|
<code class="parameter">image</code></dt>
|
|
|
|
<dd>
|
|
<p class="para">由图象创建函数(例如<span class="function"><a href="imagecreatetruecolor.html" class="function">imagecreatetruecolor()</a></span>)返回的图象资源。</p></dd>
|
|
|
|
</dl>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.imagepalettetotruecolor-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
Returns <strong><code>TRUE</code></strong> if the convertion was complete, or if the source image already
|
|
is a true color image, otherwise <strong><code>FALSE</code></strong> is returned.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.imagepalettetotruecolor-examples">
|
|
<h3 class="title">范例</h3>
|
|
<p class="para">
|
|
<div class="example" id="imagegetclip.example.basic">
|
|
<p><strong>Example #1
|
|
Converts any image resource to true color
|
|
</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// Backwards compatiblity<br /></span><span style="color: #007700">if(!</span><span style="color: #0000BB">function_exists</span><span style="color: #007700">(</span><span style="color: #DD0000">'imagepalettetotruecolor'</span><span style="color: #007700">))<br />{<br /> function </span><span style="color: #0000BB">imagepalettetotruecolor</span><span style="color: #007700">(&</span><span style="color: #0000BB">$src</span><span style="color: #007700">)<br /> {<br /> if(</span><span style="color: #0000BB">imageistruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">))<br /> {<br /> return(</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /> }<br /><br /> </span><span style="color: #0000BB">$dst </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreatetruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">), </span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">));<br /><br /> </span><span style="color: #0000BB">imagecopy</span><span style="color: #007700">(</span><span style="color: #0000BB">$dst</span><span style="color: #007700">, </span><span style="color: #0000BB">$src</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #0000BB">imagesx</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">), </span><span style="color: #0000BB">imagesy</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">));<br /> </span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">);<br /><br /> </span><span style="color: #0000BB">$src </span><span style="color: #007700">= </span><span style="color: #0000BB">$dst</span><span style="color: #007700">;<br /><br /> return(</span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /> }<br />}<br /><br /></span><span style="color: #FF8000">// Helper closure<br /></span><span style="color: #0000BB">$typeof </span><span style="color: #007700">= function() use(</span><span style="color: #0000BB">$im</span><span style="color: #007700">)<br />{<br /> echo </span><span style="color: #DD0000">'typeof($im) = ' </span><span style="color: #007700">. (</span><span style="color: #0000BB">imageistruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">) ? </span><span style="color: #DD0000">'true color' </span><span style="color: #007700">: </span><span style="color: #DD0000">'palette'</span><span style="color: #007700">), </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />};<br /><br /></span><span style="color: #FF8000">// Create a palette based image<br /></span><span style="color: #0000BB">$im </span><span style="color: #007700">= </span><span style="color: #0000BB">imagecreate</span><span style="color: #007700">(</span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$typeof</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Convert it to true color<br /></span><span style="color: #0000BB">imagepalettetotruecolor</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$typeof</span><span style="color: #007700">();<br /><br /></span><span style="color: #FF8000">// Free the memory<br /></span><span style="color: #0000BB">imagedestroy</span><span style="color: #007700">(</span><span style="color: #0000BB">$im</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
<div class="example-contents"><p>以上例程会输出：</p></div>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
typeof($im) = palette
|
|
typeof($im) = true color
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.imagepalettetotruecolor-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="imagecreatetruecolor.html" class="function" rel="rdfs-seeAlso">imagecreatetruecolor()</a> - 新建一个真彩色图像</span></li>
|
|
<li class="member"><span class="function"><a href="imageistruecolor.html" class="function" rel="rdfs-seeAlso">imageistruecolor()</a> - 检查图像是否为真彩色图像</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
</div></div></div></body></html> |