Sophie: php-manual-pt_BR-5.2.4-1mdv2008.1 noarch

php-manual-pt_BR-5.2.4-1mdv2008.1.noarch.rpm

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>imagecolorallocatealpha</H1
><DIV
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><A
NAME="AEN82935"
></A
><P
>    (PHP 4 &#62;= 4.3.2, PHP 5)</P
>imagecolorallocatealpha&nbsp;--&nbsp;Aloca cor para uma imagem</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN82938"
></A
><H2
>Descrição</H2
>int <B
CLASS="methodname"
>imagecolorallocatealpha</B
> ( resource image, int red, int green, int blue, int alpha )<BR
></BR
><P
>&#13;    <B
CLASS="function"
>imagecolorallocatealpha()</B
> funciona identicamente a  
    <A
HREF="function.imagecolorallocate.html"
><B
CLASS="function"
>imagecolorallocate()</B
></A
> com a adição do parâmetro de 
    transparencia <CODE
CLASS="parameter"
>alpha</CODE
> o qual deve ter um valor entre 
    <TT
CLASS="literal"
>0</TT
> e <TT
CLASS="literal"
>127</TT
>.  <TT
CLASS="literal"
>0</TT
>
    indica completamente opaco enquanto <TT
CLASS="literal"
>127</TT
> 
    indica completamente transparente.
   </P
><P
>&#13;    Retorna <TT
CLASS="constant"
><B
>FALSE</B
></TT
> se falhar.
   </P
><P
>&#13;    <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN82969"
></A
><P
><B
>Exemplo 1. Exemplo de uso de <B
CLASS="function"
>imagecolorallocatealpha()</B
></B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$size </font><font color="#007700">= </font><font color="#0000BB">300</font><font color="#007700">;<br /></font><font color="#0000BB">$image</font><font color="#007700">=</font><font color="#0000BB">imagecreatetruecolor</font><font color="#007700">(</font><font color="#0000BB">$size</font><font color="#007700">, </font><font color="#0000BB">$size</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// something to get a white background with black border<br /></font><font color="#0000BB">$back </font><font color="#007700">= </font><font color="#0000BB">imagecolorallocate</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">);<br /></font><font color="#0000BB">$border </font><font color="#007700">= </font><font color="#0000BB">imagecolorallocate</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">);<br /></font><font color="#0000BB">imagefilledrectangle</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">$size </font><font color="#007700">- </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$size </font><font color="#007700">- </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$back</font><font color="#007700">);<br /></font><font color="#0000BB">imagerectangle</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">$size </font><font color="#007700">- </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$size </font><font color="#007700">- </font><font color="#0000BB">1</font><font color="#007700">, </font><font color="#0000BB">$border</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$yellow_x </font><font color="#007700">= </font><font color="#0000BB">100</font><font color="#007700">;<br /></font><font color="#0000BB">$yellow_y </font><font color="#007700">= </font><font color="#0000BB">75</font><font color="#007700">;<br /></font><font color="#0000BB">$red_x&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">120</font><font color="#007700">;<br /></font><font color="#0000BB">$red_y&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">165</font><font color="#007700">; <br /></font><font color="#0000BB">$blue_x&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">187</font><font color="#007700">;<br /></font><font color="#0000BB">$blue_y&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">125</font><font color="#007700">; <br /></font><font color="#0000BB">$radius&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">150</font><font color="#007700">;<br /><br /></font><font color="#FF8000">// allocate colors with alpha values<br /></font><font color="#0000BB">$yellow </font><font color="#007700">= </font><font color="#0000BB">imagecolorallocatealpha</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">75</font><font color="#007700">);<br /></font><font color="#0000BB">$red&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">imagecolorallocatealpha</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">75</font><font color="#007700">);<br /></font><font color="#0000BB">$blue&nbsp;&nbsp;&nbsp;</font><font color="#007700">= </font><font color="#0000BB">imagecolorallocatealpha</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">0</font><font color="#007700">, </font><font color="#0000BB">255</font><font color="#007700">, </font><font color="#0000BB">75</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// drawing 3 overlapped circle<br /></font><font color="#0000BB">imagefilledellipse</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">$yellow_x</font><font color="#007700">, </font><font color="#0000BB">$yellow_y</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$yellow</font><font color="#007700">);<br /></font><font color="#0000BB">imagefilledellipse</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">$red_x</font><font color="#007700">, </font><font color="#0000BB">$red_y</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$red</font><font color="#007700">);&nbsp;&nbsp;&nbsp;<br /></font><font color="#0000BB">imagefilledellipse</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">, </font><font color="#0000BB">$blue_x</font><font color="#007700">, </font><font color="#0000BB">$blue_y</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$radius</font><font color="#007700">, </font><font color="#0000BB">$blue</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// don't forget to output a correct header!<br /></font><font color="#0000BB">header</font><font color="#007700">(</font><font color="#DD0000">'Content-type: image/png'</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// and finally, output the result<br /></font><font color="#0000BB">imagepng</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">);<br /></font><font color="#0000BB">imagedestroy</font><font color="#007700">(</font><font color="#0000BB">$image</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>
   </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>Nota: </B
>Esta função precisa do GD 2.0.1 ou posterior (2.0.28
 ou posterior é recomendado).</P
></BLOCKQUOTE
></DIV
><P
>&#13;    Veja também <A
HREF="function.imagecolorallocate.html"
><B
CLASS="function"
>imagecolorallocate()</B
></A
> e
    <A
HREF="function.imagecolordeallocate.html"
><B
CLASS="function"
>imagecolordeallocate()</B
></A
>.
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