mirror of https://github.com/apache/poi.git
applied patch from Bugzilla 52314: SheetUtil.getColumnWidth could be more flexible
git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1215079 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov
parent
40e7917560
commit
97a447bef4
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@ -34,6 +34,7 @@
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<changes>
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<release version="3.8-beta6" date="2012-??-??">
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<action dev="poi-developers" type="fix">52314 - enhanced SheetUtil.getColumnWidth</action>
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</release>
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<release version="3.8-beta5" date="2011-12-17">
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<action dev="poi-developers" type="fix">52204 - Deprecated XSSFWorkbook(String path) constructor because it does not close underlying .zip file</action>
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@ -52,7 +52,7 @@ public class SheetUtil {
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* {@link org.apache.poi.ss.usermodel.DataFormatter#formatCellValue(org.apache.poi.ss.usermodel.Cell)}
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* returns formula string for formula cells. Dummy evaluator makes it to format the cached formula result.
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*
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* See Bugzilla #50021
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* See Bugzilla #50021
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*/
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private static final FormulaEvaluator dummyEvaluator = new FormulaEvaluator(){
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public void clearAllCachedResultValues(){}
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@ -74,6 +74,117 @@ public class SheetUtil {
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*/
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private static final FontRenderContext fontRenderContext = new FontRenderContext(null, true, true);
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/**
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* Compute width of a single cell
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*
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* @param cell the cell whose width is to be calculated
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* @param defaultCharWidth the width of a single character
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* @param formatter formatter used to prepare the text to be measured
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* @param useMergedCells whether to use merged cells
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* @return the width in pixels
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*/
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public static double getCellWidth(Cell cell, int defaultCharWidth, DataFormatter formatter, boolean useMergedCells) {
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Sheet sheet = cell.getSheet();
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Workbook wb = sheet.getWorkbook();
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Row row = cell.getRow();
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int column = cell.getColumnIndex();
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int colspan = 1;
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for (int i = 0 ; i < sheet.getNumMergedRegions(); i++) {
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CellRangeAddress region = sheet.getMergedRegion(i);
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if (containsCell(region, row.getRowNum(), column)) {
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if (!useMergedCells) {
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// If we're not using merged cells, skip this one and move on to the next.
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return -1;
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}
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cell = row.getCell(region.getFirstColumn());
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colspan = 1 + region.getLastColumn() - region.getFirstColumn();
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}
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}
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CellStyle style = cell.getCellStyle();
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int cellType = cell.getCellType();
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// for formula cells we compute the cell width for the cached formula result
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if(cellType == Cell.CELL_TYPE_FORMULA) cellType = cell.getCachedFormulaResultType();
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Font font = wb.getFontAt(style.getFontIndex());
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AttributedString str;
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TextLayout layout;
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double width = -1;
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if (cellType == Cell.CELL_TYPE_STRING) {
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RichTextString rt = cell.getRichStringCellValue();
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String[] lines = rt.getString().split("\\n");
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for (int i = 0; i < lines.length; i++) {
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String txt = lines[i] + defaultChar;
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str = new AttributedString(txt);
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copyAttributes(font, str, 0, txt.length());
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if (rt.numFormattingRuns() > 0) {
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// TODO: support rich text fragments
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}
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layout = new TextLayout(str.getIterator(), fontRenderContext);
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if(style.getRotation() != 0){
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/*
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* Transform the text using a scale so that it's height is increased by a multiple of the leading,
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* and then rotate the text before computing the bounds. The scale results in some whitespace around
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* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
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* is added by the standard Excel autosize.
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*/
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AffineTransform trans = new AffineTransform();
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trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
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trans.concatenate(
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AffineTransform.getScaleInstance(1, fontHeightMultiple)
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);
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width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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} else {
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width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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}
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}
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} else {
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String sval = null;
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if (cellType == Cell.CELL_TYPE_NUMERIC) {
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// Try to get it formatted to look the same as excel
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try {
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sval = formatter.formatCellValue(cell, dummyEvaluator);
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} catch (Exception e) {
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sval = String.valueOf(cell.getNumericCellValue());
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}
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} else if (cellType == Cell.CELL_TYPE_BOOLEAN) {
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sval = String.valueOf(cell.getBooleanCellValue()).toUpperCase();
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}
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if(sval != null) {
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String txt = sval + defaultChar;
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str = new AttributedString(txt);
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copyAttributes(font, str, 0, txt.length());
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layout = new TextLayout(str.getIterator(), fontRenderContext);
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if(style.getRotation() != 0){
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/*
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* Transform the text using a scale so that it's height is increased by a multiple of the leading,
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* and then rotate the text before computing the bounds. The scale results in some whitespace around
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* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
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* is added by the standard Excel autosize.
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*/
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AffineTransform trans = new AffineTransform();
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trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
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trans.concatenate(
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AffineTransform.getScaleInstance(1, fontHeightMultiple)
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);
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width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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} else {
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width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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}
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}
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}
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return width;
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}
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/**
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* Compute width of a column and return the result
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*
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@ -96,7 +207,6 @@ public class SheetUtil {
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int defaultCharWidth = (int)layout.getAdvance();
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double width = -1;
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rows:
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for (Row row : sheet) {
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Cell cell = row.getCell(column);
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@ -104,97 +214,51 @@ public class SheetUtil {
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continue;
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}
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int colspan = 1;
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for (int i = 0 ; i < sheet.getNumMergedRegions(); i++) {
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CellRangeAddress region = sheet.getMergedRegion(i);
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if (containsCell(region, row.getRowNum(), column)) {
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if (!useMergedCells) {
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// If we're not using merged cells, skip this one and move on to the next.
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continue rows;
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}
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cell = row.getCell(region.getFirstColumn());
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colspan = 1 + region.getLastColumn() - region.getFirstColumn();
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}
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}
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CellStyle style = cell.getCellStyle();
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int cellType = cell.getCellType();
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// for formula cells we compute the cell width for the cached formula result
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if(cellType == Cell.CELL_TYPE_FORMULA) cellType = cell.getCachedFormulaResultType();
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Font font = wb.getFontAt(style.getFontIndex());
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if (cellType == Cell.CELL_TYPE_STRING) {
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RichTextString rt = cell.getRichStringCellValue();
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String[] lines = rt.getString().split("\\n");
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for (int i = 0; i < lines.length; i++) {
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String txt = lines[i] + defaultChar;
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str = new AttributedString(txt);
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copyAttributes(font, str, 0, txt.length());
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if (rt.numFormattingRuns() > 0) {
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// TODO: support rich text fragments
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}
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layout = new TextLayout(str.getIterator(), fontRenderContext);
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if(style.getRotation() != 0){
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/*
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* Transform the text using a scale so that it's height is increased by a multiple of the leading,
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* and then rotate the text before computing the bounds. The scale results in some whitespace around
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* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
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* is added by the standard Excel autosize.
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*/
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AffineTransform trans = new AffineTransform();
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trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
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trans.concatenate(
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AffineTransform.getScaleInstance(1, fontHeightMultiple)
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);
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width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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} else {
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width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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}
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}
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} else {
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String sval = null;
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if (cellType == Cell.CELL_TYPE_NUMERIC) {
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// Try to get it formatted to look the same as excel
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try {
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sval = formatter.formatCellValue(cell, dummyEvaluator);
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} catch (Exception e) {
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sval = String.valueOf(cell.getNumericCellValue());
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}
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} else if (cellType == Cell.CELL_TYPE_BOOLEAN) {
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sval = String.valueOf(cell.getBooleanCellValue()).toUpperCase();
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}
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if(sval != null) {
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String txt = sval + defaultChar;
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str = new AttributedString(txt);
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copyAttributes(font, str, 0, txt.length());
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layout = new TextLayout(str.getIterator(), fontRenderContext);
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if(style.getRotation() != 0){
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/*
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* Transform the text using a scale so that it's height is increased by a multiple of the leading,
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* and then rotate the text before computing the bounds. The scale results in some whitespace around
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* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
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* is added by the standard Excel autosize.
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*/
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AffineTransform trans = new AffineTransform();
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trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
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trans.concatenate(
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AffineTransform.getScaleInstance(1, fontHeightMultiple)
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);
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width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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} else {
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width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
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}
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}
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}
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double cellWidth = getCellWidth(cell, defaultCharWidth, formatter, useMergedCells);
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width = Math.max(width, cellWidth);
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}
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return width;
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return width;
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}
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/**
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* Compute width of a column based on a subset of the rows and return the result
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*
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* @param sheet the sheet to calculate
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* @param column 0-based index of the column
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* @param useMergedCells whether to use merged cells
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* @param firstRow 0-based index of the first row to consider (inclusive)
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* @param lastRow 0-based index of the last row to consider (inclusive)
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* @return the width in pixels
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*/
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public static double getColumnWidth(Sheet sheet, int column, boolean useMergedCells, int firstRow, int lastRow){
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AttributedString str;
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TextLayout layout;
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Workbook wb = sheet.getWorkbook();
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DataFormatter formatter = new DataFormatter();
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Font defaultFont = wb.getFontAt((short) 0);
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str = new AttributedString(String.valueOf(defaultChar));
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copyAttributes(defaultFont, str, 0, 1);
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layout = new TextLayout(str.getIterator(), fontRenderContext);
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int defaultCharWidth = (int)layout.getAdvance();
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double width = -1;
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for (int rowIdx = firstRow; rowIdx <= lastRow; ++rowIdx) {
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Row row = sheet.getRow(rowIdx);
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if( row != null ) {
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Cell cell = row.getCell(column);
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if (cell == null) {
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continue;
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}
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double cellWidth = getCellWidth(cell, defaultCharWidth, formatter, useMergedCells);
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width = Math.max(width, cellWidth);
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}
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}
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return width;
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}
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/**
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