I think there's a way to apply alternate row styling within regular styles
(not conditional formatting), but have never used POI to do this. Rather
than tell you the wrong answer, I'd rather stay quiet to avoid unnecessary
confusion. Read through the OOXML schemas or create a file in Excel with
alternate row styling, unzip the xlsx file, and read the XML to figure out
how POI needs to create the same file.
> How many POI developers actively monitor this list?
At least half a dozen. Nick is one of them.
Some of us don't live in your timezone, so same-day responses are unlikely.
We use a minimum window of 72 hours whenever we vote on a release.
Not all of us are experts at the feature you're needing help with,
conditional formatting, which may be another reason for low response.
We volunteer our time, working on POI between our day jobs and personal
lives. Given the holiday season is close, I would expect developers to be
particularly busy, finishing projects at work before the holiday closure
and preparing for travel to relatives.
Personally, I spend less time on POI when work at my day job gets busy.
This is to avoid coming down with a cold due to lack of sleep or prolonged
stress, or burning out.
We appreciate your patience.
On Dec 19, 2016 11:24, "Eric Douglas" <edoug...@blockhouse.com> wrote:
How many POI developers actively monitor this list? I haven't gotten any
answers to those questions.
Meanwhile I have a new question. If I create a conditional formatting
which is linked to the entire document and colors every other row, how can
I get individual colors in cell styles to override that, or how can I get
the conditional formatting to only color cells that have no color in their
individual cell styles?
On Tue, Dec 13, 2016 at 9:59 AM, Eric Douglas <edoug...@blockhouse.com>
wrote:
> So I took another stab at it. This seems to work, but I have questions.
>
> import java.awt.Color;
> import java.io.File;
> import java.io.FileOutputStream;
> import java.io.IOException;
>
> import org.apache.poi.ss.usermodel.ConditionalFormattingRule;
> import org.apache.poi.ss.usermodel.FillPatternType;
> import org.apache.poi.ss.usermodel.PatternFormatting;
> import org.apache.poi.ss.usermodel.SheetConditionalFormatting;
> import org.apache.poi.ss.util.CellRangeAddress;
> import org.apache.poi.xssf.usermodel.XSSFCell;
> import org.apache.poi.xssf.usermodel.XSSFCellStyle;
> import org.apache.poi.xssf.usermodel.XSSFColor;
> import org.apache.poi.xssf.usermodel.XSSFSheet;
> import org.apache.poi.xssf.usermodel.XSSFWorkbook;
>
> public class TestExcel {
>
> public static void main(String[] args) throws IOException {
> XSSFWorkbook wb = new XSSFWorkbook();
> XSSFSheet curSheet = wb.createSheet("Sheet " +
> (wb.getNumberOfSheets() + 1));
> XSSFCell c1 = curSheet.createRow(0).createCell(0);
> c1.setCellValue(wb.getCreationHelper().createRichTextString("No
> color"));
> XSSFCell c2 = curSheet.createRow(1).createCell(0);
> c2.setCellValue(wb.getCreationHelper().
createRichTextString("Color
> this cell"));
> XSSFCell c3 = curSheet.createRow(2).createCell(0);
> c3.setCellValue(wb.getCreationHelper().createRichTextString("No
> color"));
> XSSFCell c4 = curSheet.createRow(3).createCell(0);
> c4.setCellValue(wb.getCreationHelper().
createRichTextString("Color
> this cell"));
> // set one cell's color
> final XSSFCellStyle style1 = wb.createCellStyle();
> style1.setFillForegroundColor(new XSSFColor(new
> Color(123,124,125)));
> style1.setFillPattern(FillPatternType.SOLID_FOREGROUND);
> c4.setCellStyle(style1);
> // set all cells' color, every other row
> CellRangeAddress[] regions = {CellRangeAddress.valueOf("A1:
> AMJ1048576")};
> SheetConditionalFormatting sheetCF = curSheet.
> getSheetConditionalFormatting();
> ConditionalFormattingRule rule1 = sheetCF.
> createConditionalFormattingRule("ISEVEN(ROW())");
> PatternFormatting fill1 = rule1.createPatternFormatting();
> final XSSFColor customColor = new XSSFColor(new Color(228, 247,
> 247));
> fill1.setFillBackgroundColor(customColor);
> fill1.setFillPattern(PatternFormatting.SOLID_FOREGROUND);
> sheetCF.addConditionalFormatting(regions, rule1);
> File fi = new File("output.xlsx");
> if (fi.exists()) {
> fi.delete();
> }
> FileOutputStream output = new FileOutputStream(fi);
> wb.write(output);
> wb.close();
> output.flush();
> output.close();
> }
> }
>
> 1) Why does it change the background of one cell using
> setFillForegroundColor, but to change the background of many cells with a
> condition I have to call setFillBackgroundColor??
> 2) Why does this create a generic format? When I call
> createPatternFormatting() it shows up in the LibreOffice Calc Styles and
> Formatting section as ConditionalStyle_1. Can I name this style?
> 3) Why does this look like a regular style in the Calc program with many
> attributes I can set, but the API only allows me to set the fill color?
>
> On Mon, Dec 12, 2016 at 4:33 PM, Nick Burch <apa...@gagravarr.org> wrote:
>
>> On Mon, 12 Dec 2016, Eric Douglas wrote:
>>
>>> I found one sample that shows how to code the condition using
>>> org.apache.poi.ss.usermodel.SheetConditionalFormatting.
addConditionalFormatting()
>>> to put in the formula that would color each cell if it's in an even
>>> numbered row, but I'm having trouble figuring out the API to apply the
>>> formula to every cell on the worksheet.
>>>
>>
>> For every cell on a sheet, just give a cellrangeaddress that covers the
>> whole extent
>>
>> For every formula cell, you'd need to loop over all cells checking the
>> cell type, then add just those
>>
>> Nick
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: user-unsubscr...@poi.apache.org
>> For additional commands, e-mail: user-h...@poi.apache.org
>>
>>
>
