testhssfpalette.java

来自「EXCEL read and write」· Java 代码 · 共 260 行

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   this work for additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
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   See the License for the specific language governing permissions and
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package org.apache.poi.hssf.usermodel;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Iterator;
import java.util.Map;
import junit.framework.TestCase;

import org.apache.poi.hssf.HSSFTestDataSamples;
import org.apache.poi.hssf.record.PaletteRecord;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.util.TempFile;

/**
 * @author Brian Sanders (bsanders at risklabs dot com)
 */
public final class TestHSSFPalette extends TestCase {
    private PaletteRecord palette;
    private HSSFPalette hssfPalette;
    
    
    public void setUp()
    {
        palette = new PaletteRecord();
        hssfPalette = new HSSFPalette(palette);
    }
    
    /**
     * Verifies that a custom palette can be created, saved, and reloaded
     */
    public void testCustomPalette() throws IOException
    {
        //reading sample xls
        HSSFWorkbook book = HSSFTestDataSamples.openSampleWorkbook("Simple.xls");
        
        //creating custom palette
        HSSFPalette palette = book.getCustomPalette();
        palette.setColorAtIndex((short) 0x12, (byte) 101, (byte) 230, (byte) 100);
        palette.setColorAtIndex((short) 0x3b, (byte) 0, (byte) 255, (byte) 52);
        
        //writing to disk; reading in and verifying palette
        File temp = TempFile.createTempFile("testCustomPalette", ".xls");
        FileOutputStream fos = new FileOutputStream(temp);
        book.write(fos);
        fos.close();
        
        FileInputStream fis = new FileInputStream(temp);
        book = new HSSFWorkbook(fis);
        fis.close();
        
        palette = book.getCustomPalette();
        HSSFColor color = palette.getColor(HSSFColor.CORAL.index);  //unmodified
        assertNotNull("Unexpected null in custom palette (unmodified index)", color);
        short[] expectedRGB = HSSFColor.CORAL.triplet;
        short[] actualRGB = color.getTriplet();
        String msg = "Expected palette position to remain unmodified";
        assertEquals(msg, expectedRGB[0], actualRGB[0]);
        assertEquals(msg, expectedRGB[1], actualRGB[1]);
        assertEquals(msg, expectedRGB[2], actualRGB[2]);
        
        color = palette.getColor((short) 0x12);
        assertNotNull("Unexpected null in custom palette (modified)", color);
        actualRGB = color.getTriplet();
        msg = "Expected palette modification to be preserved across save";
        assertEquals(msg, (short) 101, actualRGB[0]);
        assertEquals(msg, (short) 230, actualRGB[1]);
        assertEquals(msg, (short) 100, actualRGB[2]);
    }
    
    /**
     * Uses the palette from cell stylings
     */
    public void testPaletteFromCellColours() {
        HSSFWorkbook book = HSSFTestDataSamples.openSampleWorkbook("SimpleWithColours.xls");
        
        HSSFPalette p = book.getCustomPalette();
        
        HSSFCell cellA = book.getSheetAt(0).getRow(0).getCell(0);
        HSSFCell cellB = book.getSheetAt(0).getRow(1).getCell(0);
        HSSFCell cellC = book.getSheetAt(0).getRow(2).getCell(0);
        HSSFCell cellD = book.getSheetAt(0).getRow(3).getCell(0);
        HSSFCell cellE = book.getSheetAt(0).getRow(4).getCell(0);
        
        // Plain
        assertEquals("I'm plain", cellA.getStringCellValue());
        assertEquals(64, cellA.getCellStyle().getFillForegroundColor());
        assertEquals(64, cellA.getCellStyle().getFillBackgroundColor());
        assertEquals(HSSFFont.COLOR_NORMAL, cellA.getCellStyle().getFont(book).getColor());
        assertEquals(0, cellA.getCellStyle().getFillPattern());
        assertEquals("0:0:0", p.getColor((short)64).getHexString());
        assertEquals(null, p.getColor((short)32767));
        
        // Red
        assertEquals("I'm red", cellB.getStringCellValue());
        assertEquals(64, cellB.getCellStyle().getFillForegroundColor());
        assertEquals(64, cellB.getCellStyle().getFillBackgroundColor());
        assertEquals(10, cellB.getCellStyle().getFont(book).getColor());
        assertEquals(0, cellB.getCellStyle().getFillPattern());
        assertEquals("0:0:0", p.getColor((short)64).getHexString());
        assertEquals("FFFF:0:0", p.getColor((short)10).getHexString());
        
        // Red + green bg
        assertEquals("I'm red with a green bg", cellC.getStringCellValue());
        assertEquals(11, cellC.getCellStyle().getFillForegroundColor());
        assertEquals(64, cellC.getCellStyle().getFillBackgroundColor());
        assertEquals(10, cellC.getCellStyle().getFont(book).getColor());
        assertEquals(1, cellC.getCellStyle().getFillPattern());
        assertEquals("0:FFFF:0", p.getColor((short)11).getHexString());
        assertEquals("FFFF:0:0", p.getColor((short)10).getHexString());
        
        // Pink with yellow
        assertEquals("I'm pink with a yellow pattern (none)", cellD.getStringCellValue());
        assertEquals(13, cellD.getCellStyle().getFillForegroundColor());
        assertEquals(64, cellD.getCellStyle().getFillBackgroundColor());
        assertEquals(14, cellD.getCellStyle().getFont(book).getColor());
        assertEquals(0, cellD.getCellStyle().getFillPattern());
        assertEquals("FFFF:FFFF:0", p.getColor((short)13).getHexString());
        assertEquals("FFFF:0:FFFF", p.getColor((short)14).getHexString());
        
        // Pink with yellow - full
        assertEquals("I'm pink with a yellow pattern (full)", cellE.getStringCellValue());
        assertEquals(13, cellE.getCellStyle().getFillForegroundColor());
        assertEquals(64, cellE.getCellStyle().getFillBackgroundColor());
        assertEquals(14, cellE.getCellStyle().getFont(book).getColor());
        assertEquals(0, cellE.getCellStyle().getFillPattern());
        assertEquals("FFFF:FFFF:0", p.getColor((short)13).getHexString());
        assertEquals("FFFF:0:FFFF", p.getColor((short)14).getHexString());
    }
    
    public void testFindSimilar() throws Exception {
        HSSFWorkbook book = new HSSFWorkbook();
        HSSFPalette p = book.getCustomPalette();
        
        
        // Add a few edge colours in
        p.setColorAtIndex((short)8, (byte)-1, (byte)0, (byte)0);
        p.setColorAtIndex((short)9, (byte)0, (byte)-1, (byte)0);
        p.setColorAtIndex((short)10, (byte)0, (byte)0, (byte)-1);
        
        // And some near a few of them
        p.setColorAtIndex((short)11, (byte)-1, (byte)2, (byte)2);
        p.setColorAtIndex((short)12, (byte)-2, (byte)2, (byte)10);
        p.setColorAtIndex((short)13, (byte)-4, (byte)0, (byte)0);
        p.setColorAtIndex((short)14, (byte)-8, (byte)0, (byte)0);
        
        assertEquals(
                "FFFF:0:0", p.getColor((short)8).getHexString()
        );
        
        // Now check we get the right stuff back
        assertEquals(
                p.getColor((short)8).getHexString(), 
                p.findSimilarColor((byte)-1, (byte)0, (byte)0).getHexString()
        );
        assertEquals(
                p.getColor((short)8).getHexString(), 
                p.findSimilarColor((byte)-2, (byte)0, (byte)0).getHexString()
        );
        assertEquals(
                p.getColor((short)8).getHexString(), 
                p.findSimilarColor((byte)-1, (byte)1, (byte)0).getHexString()
        );
        assertEquals(
                p.getColor((short)11).getHexString(), 
                p.findSimilarColor((byte)-1, (byte)2, (byte)1).getHexString()
        );
        assertEquals(
                p.getColor((short)12).getHexString(), 
                p.findSimilarColor((byte)-1, (byte)2, (byte)10).getHexString()
        );
    }
    
    /**
     * Verifies that the generated gnumeric-format string values match the
     * hardcoded values in the HSSFColor default color palette
     */
    public void testGnumericStrings()
    {
        compareToDefaults(new ColorComparator() {
            public void compare(HSSFColor expected, HSSFColor palette)
            {
                assertEquals(expected.getHexString(), palette.getHexString());
            }
        });
    }
    
    /**
     * Verifies that the palette handles invalid palette indexes
     */
    public void testBadIndexes()
    {
        //too small
        hssfPalette.setColorAtIndex((short) 2, (byte) 255, (byte) 255, (byte) 255);
        //too large
        hssfPalette.setColorAtIndex((short) 0x45, (byte) 255, (byte) 255, (byte) 255);
        
        //should still match defaults; 
        compareToDefaults(new ColorComparator() {
            public void compare(HSSFColor expected, HSSFColor palette)
            {
                short[] s1 = expected.getTriplet();
                short[] s2 = palette.getTriplet();
                assertEquals(s1[0], s2[0]);
                assertEquals(s1[1], s2[1]);
                assertEquals(s1[2], s2[2]);
            }
        });
    }
    
    private void compareToDefaults(ColorComparator c)
    {
        Map colors = HSSFColor.getIndexHash();
        Iterator it = colors.keySet().iterator();
        while (it.hasNext())
        {
            Number index = (Number) it.next();
            HSSFColor expectedColor = (HSSFColor) colors.get(index);
            HSSFColor paletteColor = hssfPalette.getColor(index.shortValue());
            c.compare(expectedColor, paletteColor);
        }
    }

    public void testAddColor() throws Exception
    {
        try
        {
            HSSFColor hssfColor = hssfPalette.addColor((byte)10,(byte)10,(byte)10);
            fail();
        }
        catch ( RuntimeException e )
        {
            // Failing because by default there are no colours left in the palette.
        }
    }

    private static interface ColorComparator
    {
        void compare(HSSFColor expected, HSSFColor palette);
    }
}