【问题】
docbook中，已经实现了表格显示：
<table>
<title id="mpeg.header_format">MPEG音频的帧头的格式</title>
<tgroup cols="4">
<thead>
<row><entry>位置(bit)</entry><entry>长度(bit)</entry><entry>含义</entry><entry>示例</entry></row>
</thead>
<tbody>
<row><entry>0</entry><entry>11</entry><entry>用于同步帧，找到此帧头（所有位均置1）</entry><entry>1111 1111 111</entry></row>
<row><entry>11</entry><entry>2</entry><entry>MPEG音频的版本ID</entry><entry>11</entry></row>
<row><entry>13</entry><entry>2</entry><entry>Layer 的索引</entry><entry>01</entry></row>
<row><entry>15</entry><entry>1</entry><entry>保护位：<literallayout>0 – 用16位的CRC保护下面的帧头
1 – 无CRC</literallayout></entry><entry>1</entry></row>
<row><entry>16</entry><entry>4</entry><entry>比特率索引 (见下表)</entry><entry>1001</entry></row>
<row><entry>20</entry><entry>2</entry><entry>采样率索引 (见下表)</entry><entry>11</entry></row>
<row><entry>22</entry><entry>1</entry><entry>填充位。如果设置了此位，就会对每帧数据填充一个slot (对于帧大小的计算很重要)</entry><entry>0</entry></row>
<row><entry>23</entry><entry>1</entry><entry>私有位 (仅用于标示性的)</entry><entry>1</entry></row>
<row><entry>24</entry><entry>2</entry><entry>声道的模式 </entry><entry>01</entry></row>
<row><entry>26</entry><entry>2</entry><entry>模式扩展 (仅用于联合立体声) （注：此处不是本文重点，故忽略相关的索引表）</entry><entry>00</entry></row>
</tbody>
</tgroup>
</table>但是编译有warning：
Administrator@K470 /cygdrive/e/Dev_Root/docbook/dev/src/docbook/books/VBR/src 四月 30, 2012 1:46:34 下午 org.apache.fop.apps.FopFactoryConfigurator configure 信息: Default page-height set to: 11in 四月 30, 2012 1:46:34 下午 org.apache.fop.apps.FopFactoryConfigurator configure 信息: Default page-width set to: 8.26in 四月 30, 2012 1:46:35 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: Font "Symbol,normal,700" not found. Substituting with "Symbol,normal,400". 四月 30, 2012 1:46:35 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: Font "ZapfDingbats,normal,700" not found. Substituting with "ZapfDingbats,normal,400". 四月 30, 2012 1:46:35 下午 org.apache.fop.hyphenation.Hyphenator getHyphenationTree 严重: Couldn’t find hyphenation pattern zh_cn 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: The following feature isn’t implemented by Apache FOP, yet: table-layout="auto" (on fo:table) (See position 10:21223) 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 严重: Invalid property value encountered in column-width="proportional-column-width(1)": org.apache.fop.fo.expr.PropertyException: file:/E:/Dev_Root/docbook/dev/src/docbook/books/VBR/output/fo/MPEG_VBR.fo:10:21223: proportional-column-width() function may only be used when fo:table has table-layout="fixed".; property:’column-width’ (See position 10:21303) 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 严重: Invalid property value encountered in column-width="proportional-column-width(1)": org.apache.fop.fo.expr.PropertyException: file:/E:/Dev_Root/docbook/dev/src/docbook/books/VBR/output/fo/MPEG_VBR.fo:10:21223: proportional-column-width() function may only be used when fo:table has table-layout="fixed".; property:’column-width’ (See position 10:21383) 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 严重: Invalid property value encountered in column-width="proportional-column-width(1)": org.apache.fop.fo.expr.PropertyException: file:/E:/Dev_Root/docbook/dev/src/docbook/books/VBR/output/fo/MPEG_VBR.fo:10:21223: proportional-column-width() function may only be used when fo:table has table-layout="fixed".; property:’column-width’ (See position 10:21463) 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 严重: Invalid property value encountered in column-width="proportional-column-width(1)": org.apache.fop.fo.expr.PropertyException: file:/E:/Dev_Root/docbook/dev/src/docbook/books/VBR/output/fo/MPEG_VBR.fo:10:21223: proportional-column-width() function may only be used when fo:table has table-layout="fixed".; property:’column-width’ (See position 10:21543) 四月 30, 2012 1:46:36 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: Line 1 of a paragraph overflows the available area by 48110 millipoints. (See position 10:27585) |
且编译出来的效果也难看：
现在想要根据自己的需要，去设置不同的列，不同的宽度。
【解决过程】
1.参考：Column widths，添加了对应代码：
<table>
<title id="mpeg.header_format">MPEG音频的帧头的格式</title>
<tgroup cols="4">
<colspec colnum="1" colname="col1" colwidth="1*"/>
<colspec colnum="2" colname="col2" colwidth="1*"/>
<colspec colnum="3" colname="col3" colwidth="6*"/>
<colspec colnum="4" colname="col4" colwidth="2*"/>
<thead>
<row><entry>位置(bit)</entry><entry>长度(bit)</entry><entry>含义</entry><entry>示例</entry></row>
</thead>
<tbody>
<row><entry>0</entry><entry>11</entry><entry>用于同步帧，找到此帧头（所有位均置1）</entry><entry>1111 1111 111</entry></row>
<row><entry>11</entry><entry>2</entry><entry>MPEG音频的版本ID</entry><entry>11</entry></row>
<row><entry>13</entry><entry>2</entry><entry>Layer 的索引</entry><entry>01</entry></row>
<row><entry>15</entry><entry>1</entry><entry>保护位：<literallayout>0 – 用16位的CRC保护下面的帧头
1 – 无CRC</literallayout></entry><entry>1</entry></row>
<row><entry>16</entry><entry>4</entry><entry>比特率索引 (见下表)</entry><entry>1001</entry></row>
<row><entry>20</entry><entry>2</entry><entry>采样率索引 (见下表)</entry><entry>11</entry></row>
<row><entry>22</entry><entry>1</entry><entry>填充位。如果设置了此位，就会对每帧数据填充一个slot (对于帧大小的计算很重要)</entry><entry>0</entry></row>
<row><entry>23</entry><entry>1</entry><entry>私有位 (仅用于标示性的)</entry><entry>1</entry></row>
<row><entry>24</entry><entry>2</entry><entry>声道的模式 </entry><entry>01</entry></row>
<row><entry>26</entry><entry>2</entry><entry>模式扩展 (仅用于联合立体声) （注：此处不是本文重点，故忽略相关的索引表）</entry><entry>00</entry></row>
</tbody>
</tgroup>
</table>然后编译时，也没了warning了：
Administrator@K470 /cygdrive/e/Dev_Root/docbook/dev/src/docbook/books/VBR/src 四月 30, 2012 2:02:12 下午 org.apache.fop.apps.FopFactoryConfigurator configure 信息: Default page-height set to: 11in 四月 30, 2012 2:02:12 下午 org.apache.fop.apps.FopFactoryConfigurator configure 信息: Default page-width set to: 8.26in 四月 30, 2012 2:02:13 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: Font "Symbol,normal,700" not found. Substituting with "Symbol,normal,400". 四月 30, 2012 2:02:13 下午 org.apache.fop.events.LoggingEventListener processEvent 警告: Font "ZapfDingbats,normal,700" not found. Substituting with "ZapfDingbats,normal,400". 四月 30, 2012 2:02:13 下午 org.apache.fop.hyphenation.Hyphenator getHyphenationTree 严重: Couldn’t find hyphenation pattern zh_cn |
结果出来的表格的宽度，也好看了：
【总结】
在table的tgroup之后，添加对应的colspec，指定对应的colwidth，即可达到自定义表格中列的宽度。