mirror of https://github.com/apache/poi.git
PR 15743: Add support for custom palettes: Submitted by Brian Sanders
git-svn-id: https://svn.apache.org/repos/asf/jakarta/poi/trunk@352978 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Avik Sengupta
parent
e4e984b482
commit
04571a0a59
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@ -27,6 +27,7 @@
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<li><link href="#FrillsAndFills">Fills and color</link></li>
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<li><link href="#MergedCells">Merging cells</link></li>
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<li><link href="#WorkingWithFonts">Working with fonts</link></li>
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<li><link href="#CustomColors">Custom colors</link></li>
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<li><link href="#ReadWriteWorkbook">Reading and writing</link></li>
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<li><link href="#NewLinesInCells">Use newlines in cells.</link></li>
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<li><link href="#DataFormats">Create user defined data formats.</link></li>
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@ -280,6 +281,60 @@
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fileOut.close();
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</source>
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</section>
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<anchor id="CustomColors"/>
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<section title="Custom colors">
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<source>
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HSSFWorkbook wb = new HSSFWorkbook();
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HSSFSheet sheet = wb.createSheet();
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HSSFRow row = sheet.createRow((short) 0);
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HSSFCell cell = row.createCell((short) 0);
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cell.setCellValue("Default Palette");
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//apply some colors from the standard palette,
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// as in the previous examples.
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//we'll use red text on a lime background
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HSSFCellStyle style = wb.createCellStyle();
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style.setFillForegroundColor(HSSFColor.LIME.index);
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style.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
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HSSFFont font = wb.createFont();
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font.setColor(HSSFColor.RED.index);
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style.setFont(font);
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cell.setCellStyle(style);
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//save with the default palette
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FileOutputStream out = new FileOutputStream("default_palette.xls");
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wb.write(out);
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out.close();
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//now, let's replace RED and LIME in the palette
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// with a more attractive combination
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// (lovingly borrowed from freebsd.org)
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cell.setCellValue("Modified Palette");
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//creating a custom palette for the workbook
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HSSFPalette palette = wb.getCustomPalette();
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//replacing the standard red with freebsd.org red
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palette.setColorAtIndex(HSSFColor.RED.index,
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(byte) 153, //RGB red (0-255)
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(byte) 0, //RGB green
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(byte) 0 //RGB blue
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);
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//replacing lime with freebsd.org gold
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palette.setColorAtIndex(HSSFColor.LIME.index, (byte) 255, (byte) 204, (byte) 102);
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//save with the modified palette
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// note that wherever we have previously used RED or LIME, the
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// new colors magically appear
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out = new FileOutputStream("modified_palette.xls");
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wb.write(out);
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out.close();
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</source>
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</section>
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<anchor id="ReadWriteWorkbook"/>
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<section title="Reading and Rewriting Workbooks">
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<source>
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@ -89,6 +89,7 @@ import java.util.Locale;
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* @author Sergei Kozello (sergeikozello at mail.ru)
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* @author Luc Girardin (luc dot girardin at macrofocus dot com)
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* @author Dan Sherman (dsherman at isisph.com)
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* @author Brian Sanders (bsanders at risklabs dot com) - custom palette
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* @see org.apache.poi.hssf.usermodel.HSSFWorkbook
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* @version 1.0-pre
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*/
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@ -146,6 +147,7 @@ public class Workbook implements Model {
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private int backuppos = 0; // holds the position of the backup record.
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private int namepos = 0; // holds the position of last name record
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private int supbookpos = 0; // holds the position of sup book
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private int palettepos = 0; // hold the position of the palette, if applicable
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private short maxformatid = -1; // holds the max format id
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private boolean uses1904datewindowing = false; // whether 1904 date windowing is being used
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@ -249,7 +251,9 @@ public class Workbook implements Model {
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log.log(DEBUG, "found datewindow1904 record at " + k);
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retval.uses1904datewindowing = ((DateWindow1904Record)rec).getWindowing() == 1;
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break;
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case PaletteRecord.sid:
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log.log(DEBUG, "found palette record at " + k);
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retval.palettepos = k;
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default :
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}
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records.add(rec);
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@ -328,6 +332,7 @@ public class Workbook implements Model {
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{
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records.add( retval.createStyle( k ) );
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}
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retval.palettepos = records.size();
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records.add( retval.createUseSelFS() );
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for ( int k = 0; k < 1; k++ )
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{ // now just do 1
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@ -578,6 +583,7 @@ public class Workbook implements Model {
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ExtendedFormatRecord xf = createExtendedFormat();
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++xfpos;
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++palettepos;
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++bspos;
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records.add(xfpos, xf);
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numxfs++;
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@ -1566,6 +1572,16 @@ public class Workbook implements Model {
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return retval;
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}
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/**
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* Creates a palette record initialized to the default palette
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* @return a PaletteRecord instance populated with the default colors
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* @see org.apache.poi.hssf.record.PaletteRecord
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*/
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protected PaletteRecord createPalette()
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{
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return new PaletteRecord(PaletteRecord.sid);
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}
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/**
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* Creates the UseSelFS object with the use natural language flag set to 0 (false)
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* @return record containing a UseSelFSRecord
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@ -1864,6 +1880,7 @@ public class Workbook implements Model {
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public short createFormat( String format )
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{
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++xfpos; //These are to ensure that positions are updated properly
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++palettepos;
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++bspos;
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FormatRecord rec = new FormatRecord();
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maxformatid = maxformatid >= (short) 0xa4 ? (short) ( maxformatid + 1 ) : (short) 0xa4; //Starting value from M$ empiracle study.
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@ -1941,6 +1958,7 @@ public class Workbook implements Model {
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// {
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// backuppos += chartRecords.size();
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// fontpos += chartRecords.size();
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// palettepos += chartRecords.size();
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// bspos += chartRecords.size();
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// xfpos += chartRecords.size();
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//
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@ -1956,4 +1974,25 @@ public class Workbook implements Model {
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public boolean isUsing1904DateWindowing() {
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return uses1904datewindowing;
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}
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/**
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* Returns the custom palette in use for this workbook; if a custom palette record
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* does not exist, then it is created.
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*/
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public PaletteRecord getCustomPalette()
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{
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PaletteRecord palette;
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Record rec = (Record) records.get(palettepos);
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if (rec instanceof PaletteRecord)
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{
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palette = (PaletteRecord) rec;
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}
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else
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{
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palette = createPalette();
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records.add(palettepos, palette);
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++bspos;
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}
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return palette;
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}
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}
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@ -63,6 +63,7 @@ import org.apache.poi.util.LittleEndian;
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/**
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* PaletteRecord - Supports custom palettes.
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* @author Andrew C. Oliver (acoliver at apache dot org)
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* @author Brian Sanders (bsanders at risklabs dot com) - custom palette editing
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* @version 2.0-pre
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*/
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@ -70,6 +71,10 @@ public class PaletteRecord
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extends Record
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{
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public final static short sid = 0x92;
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/** The standard size of an XLS palette */
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public final static byte STANDARD_PALETTE_SIZE = (byte) 56;
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/** The byte index of the first color */
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public final static short FIRST_COLOR_INDEX = (short) 0x8;
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private short field_1_numcolors;
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private List field_2_colors;
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@ -78,6 +83,14 @@ public class PaletteRecord
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{
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}
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/**
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* Constructs a custom palette with the default set of colors
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*/
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public PaletteRecord(short id)
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{
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super(id, STANDARD_PALETTE_SIZE, getDefaultData());
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}
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/**
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* Constructs a PaletteRecord record and sets its fields appropriately.
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*
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@ -131,7 +144,7 @@ public class PaletteRecord
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{
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StringBuffer buffer = new StringBuffer();
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buffer.append("[Palette]\n");
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buffer.append("[PALETTE]\n");
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buffer.append(" numcolors = ").append(field_1_numcolors)
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.append('\n');
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for (int k = 0; k < field_1_numcolors; k++) {
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@ -142,16 +155,18 @@ public class PaletteRecord
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buffer.append("/*colornum = ").append(k)
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.append('\n');
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}
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buffer.append("[/Palette]\n");
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buffer.append("[/PALETTE]\n");
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return buffer.toString();
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}
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public int serialize(int offset, byte [] data)
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{
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LittleEndian.putShort(data, 0 + offset, sid);
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LittleEndian.putShort(data, 2 + offset, (short) (getRecordSize() - 4));
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LittleEndian.putShort(data, 4 + offset, field_1_numcolors);
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for (int k = 0; k < field_1_numcolors; k++) {
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PColor c = (PColor)field_2_colors.get(k);
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c.serialize(data, (2+offset+(k*4)));
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c.serialize(data, (6+offset+(k*4)));
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}
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return getRecordSize();
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@ -159,7 +174,7 @@ public class PaletteRecord
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public int getRecordSize()
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{
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return 2 + (field_1_numcolors * 4);
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return 4 + 2 + (field_1_numcolors * 4);
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}
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public short getSid()
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@ -167,6 +182,115 @@ public class PaletteRecord
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return this.sid;
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}
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/**
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* Returns the color value at a given index
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*
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* @return the RGB triplet for the color, or null if the specified index
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* does not exist
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*/
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public byte[] getColor(short byteIndex)
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{
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int i = byteIndex - FIRST_COLOR_INDEX;
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if (i < 0 || i >= field_2_colors.size())
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{
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return null;
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}
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PColor color = (PColor) field_2_colors.get(i);
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return new byte[] { color.red, color.green, color.blue };
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}
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/**
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* Sets the color value at a given index
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*
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* If the given index is greater than the current last color index,
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* then black is inserted at every index required to make the palette continuous.
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*
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* @param i the index to set; if this index is less than 0x8 or greater than
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* 0x40, then no modification is made
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*/
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public void setColor(short byteIndex, byte red, byte green, byte blue)
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{
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int i = byteIndex - FIRST_COLOR_INDEX;
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if (i < 0 || i >= STANDARD_PALETTE_SIZE)
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{
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return;
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}
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while (field_2_colors.size() <= i)
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{
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field_2_colors.add(new PColor((byte) 0, (byte) 0, (byte) 0));
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}
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PColor custColor = new PColor(red, green, blue);
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field_2_colors.set(i, custColor);
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}
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/**
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* Returns the default palette as PaletteRecord binary data
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*
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* @see org.apache.poi.hssf.model.Workbook#createPalette
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*/
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public static byte[] getDefaultData()
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{
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return new byte[]
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{
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STANDARD_PALETTE_SIZE, (byte) 0,
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(byte) 0, (byte) 0, (byte) 0, (byte) 0, //color 0...
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(byte) 255, (byte) 255, (byte) 255, (byte) 0,
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(byte) 255, (byte) 0, (byte) 0, (byte) 0,
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(byte) 0, (byte) 255, (byte) 0, (byte) 0,
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(byte) 0, (byte) 0, (byte) 255, (byte) 0,
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(byte) 255, (byte) 255, (byte) 0, (byte) 0,
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(byte) 255, (byte) 0, (byte) 255, (byte) 0,
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(byte) 0, (byte) 255, (byte) 255, (byte) 0,
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(byte) 128, (byte) 0, (byte) 0, (byte) 0,
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(byte) 0, (byte) 128, (byte) 0, (byte) 0,
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(byte) 0, (byte) 0, (byte) 128, (byte) 0,
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(byte) 128, (byte) 128, (byte) 0, (byte) 0,
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(byte) 128, (byte) 0, (byte) 128, (byte) 0,
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(byte) 0, (byte) 128, (byte) 128, (byte) 0,
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(byte) 192, (byte) 192, (byte) 192, (byte) 0,
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(byte) 128, (byte) 128, (byte) 128, (byte) 0,
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(byte) 153, (byte) 153, (byte) 255, (byte) 0,
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(byte) 153, (byte) 51, (byte) 102, (byte) 0,
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(byte) 255, (byte) 255, (byte) 204, (byte) 0,
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(byte) 204, (byte) 255, (byte) 255, (byte) 0,
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(byte) 102, (byte) 0, (byte) 102, (byte) 0,
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(byte) 255, (byte) 128, (byte) 128, (byte) 0,
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(byte) 0, (byte) 102, (byte) 204, (byte) 0,
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(byte) 204, (byte) 204, (byte) 255, (byte) 0,
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(byte) 0, (byte) 0, (byte) 128, (byte) 0,
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(byte) 255, (byte) 0, (byte) 255, (byte) 0,
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(byte) 255, (byte) 255, (byte) 0, (byte) 0,
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(byte) 0, (byte) 255, (byte) 255, (byte) 0,
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(byte) 128, (byte) 0, (byte) 128, (byte) 0,
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(byte) 128, (byte) 0, (byte) 0, (byte) 0,
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(byte) 0, (byte) 128, (byte) 128, (byte) 0,
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(byte) 0, (byte) 0, (byte) 255, (byte) 0,
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(byte) 0, (byte) 204, (byte) 255, (byte) 0,
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(byte) 204, (byte) 255, (byte) 255, (byte) 0,
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(byte) 204, (byte) 255, (byte) 204, (byte) 0,
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(byte) 255, (byte) 255, (byte) 153, (byte) 0,
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(byte) 153, (byte) 204, (byte) 255, (byte) 0,
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(byte) 255, (byte) 153, (byte) 204, (byte) 0,
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(byte) 204, (byte) 153, (byte) 255, (byte) 0,
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(byte) 255, (byte) 204, (byte) 153, (byte) 0,
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(byte) 51, (byte) 102, (byte) 255, (byte) 0,
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(byte) 51, (byte) 204, (byte) 204, (byte) 0,
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(byte) 153, (byte) 204, (byte) 0, (byte) 0,
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(byte) 255, (byte) 204, (byte) 0, (byte) 0,
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(byte) 255, (byte) 153, (byte) 0, (byte) 0,
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(byte) 255, (byte) 102, (byte) 0, (byte) 0,
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(byte) 102, (byte) 102, (byte) 153, (byte) 0,
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(byte) 150, (byte) 150, (byte) 150, (byte) 0,
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(byte) 0, (byte) 51, (byte) 102, (byte) 0,
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(byte) 51, (byte) 153, (byte) 102, (byte) 0,
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(byte) 0, (byte) 51, (byte) 0, (byte) 0,
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(byte) 51, (byte) 51, (byte) 0, (byte) 0,
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(byte) 153, (byte) 51, (byte) 0, (byte) 0,
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(byte) 153, (byte) 51, (byte) 102, (byte) 0,
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(byte) 51, (byte) 51, (byte) 153, (byte) 0,
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(byte) 51, (byte) 51, (byte) 51, (byte) 0
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};
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}
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}
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/**
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@ -191,9 +315,9 @@ class PColor {
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public String toString() {
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StringBuffer buffer = new StringBuffer();
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buffer.append(" red = ").append(red).append('\n');
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buffer.append(" green = ").append(green).append('\n');
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buffer.append(" blue = ").append(blue).append('\n');
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buffer.append(" red = ").append(red & 0xff).append('\n');
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buffer.append(" green = ").append(green & 0xff).append('\n');
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buffer.append(" blue = ").append(blue & 0xff).append('\n');
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return buffer.toString();
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}
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}
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@ -728,6 +728,11 @@ public class HSSFWorkbook
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}
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public HSSFPalette getCustomPalette()
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{
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return new HSSFPalette(workbook.getCustomPalette());
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}
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/**
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* Copies nodes from one POIFS to the other minus the excepts
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* @param source is the source POIFS to copy from
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@ -27,6 +27,7 @@ import org.apache.poi.hssf.record.TestLineFormatRecord;
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import org.apache.poi.hssf.record.TestLinkedDataRecord;
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import org.apache.poi.hssf.record.TestNumberFormatIndexRecord;
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import org.apache.poi.hssf.record.TestObjectLinkRecord;
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import org.apache.poi.hssf.record.TestPaletteRecord;
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import org.apache.poi.hssf.record.TestPlotAreaRecord;
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import org.apache.poi.hssf.record.TestPlotGrowthRecord;
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import org.apache.poi.hssf.record.TestRecordFactory;
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@ -53,6 +54,7 @@ import org.apache.poi.hssf.usermodel.TestCellStyle;
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import org.apache.poi.hssf.usermodel.TestFormulas;
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import org.apache.poi.hssf.usermodel.TestHSSFCell;
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import org.apache.poi.hssf.usermodel.TestHSSFDateUtil;
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import org.apache.poi.hssf.usermodel.TestHSSFPalette;
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import org.apache.poi.hssf.usermodel.TestHSSFRow;
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import org.apache.poi.hssf.usermodel.TestHSSFSheet;
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import org.apache.poi.hssf.usermodel.TestNamedRange;
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@ -86,6 +88,7 @@ public class HSSFTests
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suite.addTest(new TestSuite(TestFormulas.class));
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suite.addTest(new TestSuite(TestHSSFCell.class));
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suite.addTest(new TestSuite(TestHSSFDateUtil.class));
|
||||
suite.addTest(new TestSuite(TestHSSFPalette.class));
|
||||
suite.addTest(new TestSuite(TestHSSFRow.class));
|
||||
suite.addTest(new TestSuite(TestHSSFSheet.class));
|
||||
suite.addTest(new TestSuite(TestNamedRange.class));
|
||||
|
|
@ -116,6 +119,7 @@ public class HSSFTests
|
|||
suite.addTest(new TestSuite(TestLinkedDataRecord.class));
|
||||
suite.addTest(new TestSuite(TestNumberFormatIndexRecord.class));
|
||||
suite.addTest(new TestSuite(TestObjectLinkRecord.class));
|
||||
suite.addTest(new TestSuite(TestPaletteRecord.class));
|
||||
suite.addTest(new TestSuite(TestPlotAreaRecord.class));
|
||||
suite.addTest(new TestSuite(TestPlotGrowthRecord.class));
|
||||
suite.addTest(new TestSuite(TestRecordFactory.class));
|
||||
|
|
|
|||
Loading…
Reference in New Issue