pngimage.html

IText PDF开发工具说明文档,使用很方便。

<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../../com/lowagie/text/Image.html" title="class in com.lowagie.text">Image</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getImage(java.lang.String)">getImage</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;file)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads a PNG from a file.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="../../../../../com/lowagie/text/Image.html" title="class in com.lowagie.text">Image</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getImage(java.net.URL)">getImage</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/net/URL.html?is-external=true" title="class or interface in java.net">URL</A>&nbsp;url)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Reads a PNG from an url.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getInt(java.io.InputStream)">getInt</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A>&nbsp;is)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets an <CODE>int</CODE> from an <CODE>InputStream</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) &nbsp;int[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getPixel(byte[])">getPixel</A></B>(byte[]&nbsp;curr)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getPixel(byte[], int, int, int, int)">getPixel</A></B>(byte[]&nbsp;image,
         int&nbsp;x,
         int&nbsp;y,
         int&nbsp;bitDepth,
         int&nbsp;bytesPerRow)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getString(java.io.InputStream)">getString</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A>&nbsp;is)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets a <CODE>String</CODE> from an <CODE>InputStream</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#getWord(java.io.InputStream)">getWord</A></B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A>&nbsp;is)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets a <CODE>word</CODE> from an <CODE>InputStream</CODE>.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private static&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#paethPredictor(int, int, int)">paethPredictor</A></B>(int&nbsp;a,
               int&nbsp;b,
               int&nbsp;c)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#processPixels(byte[], int, int, int, int)">processPixels</A></B>(byte[]&nbsp;curr,
              int&nbsp;xOffset,
              int&nbsp;step,
              int&nbsp;y,
              int&nbsp;width)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) &nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#readPng()">readPng</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>(package private) static&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../com/lowagie/text/pdf/codec/PngImage.html#setPixel(byte[], int[], int, int, int, int, int, int)">setPixel</A></B>(byte[]&nbsp;image,
         int[]&nbsp;data,
         int&nbsp;offset,
         int&nbsp;size,
         int&nbsp;x,
         int&nbsp;y,
         int&nbsp;bitDepth,
         int&nbsp;bytesPerRow)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</A>, <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</A></CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->

<A NAME="field_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Field Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="PNGID"><!-- --></A><H3>
PNGID</H3>
<PRE>
public static final int[] <B>PNGID</B></PRE>
<DL>
<DD>Some PNG specific values.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="IHDR"><!-- --></A><H3>
IHDR</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>IHDR</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.IHDR">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PLTE"><!-- --></A><H3>
PLTE</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>PLTE</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PLTE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="IDAT"><!-- --></A><H3>
IDAT</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>IDAT</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.IDAT">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="IEND"><!-- --></A><H3>
IEND</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>IEND</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.IEND">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="tRNS"><!-- --></A><H3>
tRNS</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>tRNS</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.tRNS">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="pHYs"><!-- --></A><H3>
pHYs</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>pHYs</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.pHYs">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="gAMA"><!-- --></A><H3>
gAMA</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>gAMA</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.gAMA">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="cHRM"><!-- --></A><H3>
cHRM</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>cHRM</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.cHRM">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="sRGB"><!-- --></A><H3>
sRGB</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>sRGB</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.sRGB">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="iCCP"><!-- --></A><H3>
iCCP</H3>
<PRE>
public static final <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <B>iCCP</B></PRE>
<DL>
<DD>A PNG marker.
<P>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.iCCP">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="TRANSFERSIZE"><!-- --></A><H3>
TRANSFERSIZE</H3>
<PRE>
private static final int <B>TRANSFERSIZE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.TRANSFERSIZE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PNG_FILTER_NONE"><!-- --></A><H3>
PNG_FILTER_NONE</H3>
<PRE>
private static final int <B>PNG_FILTER_NONE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PNG_FILTER_NONE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PNG_FILTER_SUB"><!-- --></A><H3>
PNG_FILTER_SUB</H3>
<PRE>
private static final int <B>PNG_FILTER_SUB</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PNG_FILTER_SUB">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PNG_FILTER_UP"><!-- --></A><H3>
PNG_FILTER_UP</H3>
<PRE>
private static final int <B>PNG_FILTER_UP</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PNG_FILTER_UP">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PNG_FILTER_AVERAGE"><!-- --></A><H3>
PNG_FILTER_AVERAGE</H3>
<PRE>
private static final int <B>PNG_FILTER_AVERAGE</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PNG_FILTER_AVERAGE">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="PNG_FILTER_PAETH"><!-- --></A><H3>
PNG_FILTER_PAETH</H3>
<PRE>
private static final int <B>PNG_FILTER_PAETH</B></PRE>
<DL>
<DL>
<DT><B>See Also:</B><DD><A HREF="../../../../../constant-values.html#com.lowagie.text.pdf.codec.PngImage.PNG_FILTER_PAETH">Constant Field Values</A></DL>
</DL>
<HR>

<A NAME="intents"><!-- --></A><H3>
intents</H3>
<PRE>
private static final <A HREF="../../../../../com/lowagie/text/pdf/PdfName.html" title="class in com.lowagie.text.pdf">PdfName</A>[] <B>intents</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="is"><!-- --></A><H3>
is</H3>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</A> <B>is</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="dataStream"><!-- --></A><H3>
dataStream</H3>
<PRE>
<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/DataInputStream.html?is-external=true" title="class or interface in java.io">DataInputStream</A> <B>dataStream</B></PRE>
<DL>
<DL>
</DL>
</DL>
<HR>

<A NAME="width"><!-- --></A><H3>
width</H3>
<PRE>
int <B>width</B></PRE>
<DL>
<DL>