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applied patch from Bugzilla 52314: SheetUtil.getColumnWidth could be more flexible

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1215079 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Yegor Kozlov 2011-12-16 10:01:02 +00:00
parent 79a10931dc
commit 2e67e48e71
2 changed files with 157 additions and 92 deletions
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1
src/documentation/content/xdocs/status.xml
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@ -34,6 +34,7 @@
<changes>
<release version="3.8-beta6" date="2012-??-??">
<action dev="poi-developers" type="fix">52314 - enhanced SheetUtil.getColumnWidth</action>
</release>
<release version="3.8-beta5" date="2011-12-17">
<action dev="poi-developers" type="fix">52204 - Deprecated XSSFWorkbook(String path) constructor because it does not close underlying .zip file</action>

240
src/java/org/apache/poi/ss/util/SheetUtil.java
View File

@ -74,6 +74,117 @@ public class SheetUtil {
*/
private static final FontRenderContext fontRenderContext = new FontRenderContext(null, true, true);
/**
* Compute width of a single cell
*
* @param cell the cell whose width is to be calculated
* @param defaultCharWidth the width of a single character
* @param formatter formatter used to prepare the text to be measured
* @param useMergedCells whether to use merged cells
* @return the width in pixels
*/
public static double getCellWidth(Cell cell, int defaultCharWidth, DataFormatter formatter, boolean useMergedCells) {
Sheet sheet = cell.getSheet();
Workbook wb = sheet.getWorkbook();
Row row = cell.getRow();
int column = cell.getColumnIndex();
int colspan = 1;
for (int i = 0 ; i < sheet.getNumMergedRegions(); i++) {
CellRangeAddress region = sheet.getMergedRegion(i);
if (containsCell(region, row.getRowNum(), column)) {
if (!useMergedCells) {
// If we're not using merged cells, skip this one and move on to the next.
return -1;
}
cell = row.getCell(region.getFirstColumn());
colspan = 1 + region.getLastColumn() - region.getFirstColumn();
}
}
CellStyle style = cell.getCellStyle();
int cellType = cell.getCellType();
// for formula cells we compute the cell width for the cached formula result
if(cellType == Cell.CELL_TYPE_FORMULA) cellType = cell.getCachedFormulaResultType();
Font font = wb.getFontAt(style.getFontIndex());
AttributedString str;
TextLayout layout;
double width = -1;
if (cellType == Cell.CELL_TYPE_STRING) {
RichTextString rt = cell.getRichStringCellValue();
String[] lines = rt.getString().split("\\n");
for (int i = 0; i < lines.length; i++) {
String txt = lines[i] + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
if (rt.numFormattingRuns() > 0) {
// TODO: support rich text fragments
}
layout = new TextLayout(str.getIterator(), fontRenderContext);
if(style.getRotation() != 0){
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
trans.concatenate(
AffineTransform.getScaleInstance(1, fontHeightMultiple)
);
width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
} else {
width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
}
}
} else {
String sval = null;
if (cellType == Cell.CELL_TYPE_NUMERIC) {
// Try to get it formatted to look the same as excel
try {
sval = formatter.formatCellValue(cell, dummyEvaluator);
} catch (Exception e) {
sval = String.valueOf(cell.getNumericCellValue());
}
} else if (cellType == Cell.CELL_TYPE_BOOLEAN) {
sval = String.valueOf(cell.getBooleanCellValue()).toUpperCase();
}
if(sval != null) {
String txt = sval + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
layout = new TextLayout(str.getIterator(), fontRenderContext);
if(style.getRotation() != 0){
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
trans.concatenate(
AffineTransform.getScaleInstance(1, fontHeightMultiple)
);
width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
} else {
width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
}
}
}
return width;
}
/**
* Compute width of a column and return the result
*
@ -96,7 +207,6 @@ public class SheetUtil {
int defaultCharWidth = (int)layout.getAdvance();
double width = -1;
rows:
for (Row row : sheet) {
Cell cell = row.getCell(column);
@ -104,95 +214,49 @@ public class SheetUtil {
continue;
}
int colspan = 1;
for (int i = 0 ; i < sheet.getNumMergedRegions(); i++) {
CellRangeAddress region = sheet.getMergedRegion(i);
if (containsCell(region, row.getRowNum(), column)) {
if (!useMergedCells) {
// If we're not using merged cells, skip this one and move on to the next.
continue rows;
}
cell = row.getCell(region.getFirstColumn());
colspan = 1 + region.getLastColumn() - region.getFirstColumn();
double cellWidth = getCellWidth(cell, defaultCharWidth, formatter, useMergedCells);
width = Math.max(width, cellWidth);
}
return width;
}
/**
* Compute width of a column based on a subset of the rows and return the result
*
* @param sheet the sheet to calculate
* @param column 0-based index of the column
* @param useMergedCells whether to use merged cells
* @param firstRow 0-based index of the first row to consider (inclusive)
* @param lastRow 0-based index of the last row to consider (inclusive)
* @return the width in pixels
*/
public static double getColumnWidth(Sheet sheet, int column, boolean useMergedCells, int firstRow, int lastRow){
AttributedString str;
TextLayout layout;
Workbook wb = sheet.getWorkbook();
DataFormatter formatter = new DataFormatter();
Font defaultFont = wb.getFontAt((short) 0);
str = new AttributedString(String.valueOf(defaultChar));
copyAttributes(defaultFont, str, 0, 1);
layout = new TextLayout(str.getIterator(), fontRenderContext);
int defaultCharWidth = (int)layout.getAdvance();
double width = -1;
for (int rowIdx = firstRow; rowIdx <= lastRow; ++rowIdx) {
Row row = sheet.getRow(rowIdx);
if( row != null ) {
Cell cell = row.getCell(column);
if (cell == null) {
continue;
}
double cellWidth = getCellWidth(cell, defaultCharWidth, formatter, useMergedCells);
width = Math.max(width, cellWidth);
}
CellStyle style = cell.getCellStyle();
int cellType = cell.getCellType();
// for formula cells we compute the cell width for the cached formula result
if(cellType == Cell.CELL_TYPE_FORMULA) cellType = cell.getCachedFormulaResultType();
Font font = wb.getFontAt(style.getFontIndex());
if (cellType == Cell.CELL_TYPE_STRING) {
RichTextString rt = cell.getRichStringCellValue();
String[] lines = rt.getString().split("\\n");
for (int i = 0; i < lines.length; i++) {
String txt = lines[i] + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
if (rt.numFormattingRuns() > 0) {
// TODO: support rich text fragments
}
layout = new TextLayout(str.getIterator(), fontRenderContext);
if(style.getRotation() != 0){
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
trans.concatenate(
AffineTransform.getScaleInstance(1, fontHeightMultiple)
);
width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
} else {
width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
}
}
} else {
String sval = null;
if (cellType == Cell.CELL_TYPE_NUMERIC) {
// Try to get it formatted to look the same as excel
try {
sval = formatter.formatCellValue(cell, dummyEvaluator);
} catch (Exception e) {
sval = String.valueOf(cell.getNumericCellValue());
}
} else if (cellType == Cell.CELL_TYPE_BOOLEAN) {
sval = String.valueOf(cell.getBooleanCellValue()).toUpperCase();
}
if(sval != null) {
String txt = sval + defaultChar;
str = new AttributedString(txt);
copyAttributes(font, str, 0, txt.length());
layout = new TextLayout(str.getIterator(), fontRenderContext);
if(style.getRotation() != 0){
/*
* Transform the text using a scale so that it's height is increased by a multiple of the leading,
* and then rotate the text before computing the bounds. The scale results in some whitespace around
* the unrotated top and bottom of the text that normally wouldn't be present if unscaled, but
* is added by the standard Excel autosize.
*/
AffineTransform trans = new AffineTransform();
trans.concatenate(AffineTransform.getRotateInstance(style.getRotation()*2.0*Math.PI/360.0));
trans.concatenate(
AffineTransform.getScaleInstance(1, fontHeightMultiple)
);
width = Math.max(width, ((layout.getOutline(trans).getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
} else {
width = Math.max(width, ((layout.getBounds().getWidth() / colspan) / defaultCharWidth) + cell.getCellStyle().getIndention());
}
}
}
}
return width;
}