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/*
* $Id: PdfPRow.java 3999 2009-06-30 11:52:55Z blowagie $
*
* Copyright 2001, 2002 Paulo Soares
*
* The contents of this file are subject to the Mozilla Public License Version 1.1
* (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.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the License.
*
* The Original Code is 'iText, a free JAVA-PDF library'.
*
* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
* All Rights Reserved.
* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
*
* Contributor(s): all the names of the contributors are added in the source code
* where applicable.
*
* Alternatively, the contents of this file may be used under the terms of the
* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
* provisions of LGPL are applicable instead of those above. If you wish to
* allow use of your version of this file only under the terms of the LGPL
* License and not to allow others to use your version of this file under
* the MPL, indicate your decision by deleting the provisions above and
* replace them with the notice and other provisions required by the LGPL.
* If you do not delete the provisions above, a recipient may use your version
* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the MPL as stated above or under the terms of the GNU
* Library General Public License as published by the Free Software Foundation;
* either version 2 of the License, or any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
* details.
*
* If you didn't download this code from the following link, you should check if
* you aren't using an obsolete version:
* http://www.lowagie.com/iText/
*/
package com.aowagie.text.pdf;
import java.awt.Color;
import com.aowagie.text.DocumentException;
import com.aowagie.text.Element;
import com.aowagie.text.ExceptionConverter;
import com.aowagie.text.Image;
import com.aowagie.text.Rectangle;
/**
* A row in a PdfPTable.
*
* @author Paulo Soares ([email protected])
*/
class PdfPRow {
/** the bottom limit (bottom right y) */
static final float BOTTOM_LIMIT = -(1 << 30);
/**
* the right limit
* @since 2.1.5
*/
static final float RIGHT_LIMIT = 20000;
private final PdfPCell cells[];
private float widths[];
/**
* extra heights that needs to be added to a cell because of rowspans.
* @since 2.1.6
*/
private float extraHeights[];
private float maxHeight = 0;
private boolean calculated = false;
private int[] canvasesPos;
/**
* Constructs a new PdfPRow with the cells in the array that was passed
* as a parameter.
*
* @param cells
*/
public PdfPRow(final PdfPCell cells[]) {
this.cells = cells;
this.widths = new float[cells.length];
initExtraHeights();
}
/**
* Makes a copy of an existing row.
*
* @param row
*/
public PdfPRow(final PdfPRow row) {
this.maxHeight = row.maxHeight;
this.calculated = row.calculated;
this.cells = new PdfPCell[row.cells.length];
for (int k = 0; k < this.cells.length; ++k) {
if (row.cells[k] != null) {
this.cells[k] = new PdfPCell(row.cells[k]);
}
}
this.widths = new float[this.cells.length];
System.arraycopy(row.widths, 0, this.widths, 0, this.cells.length);
initExtraHeights();
}
/**
* Sets the widths of the columns in the row.
*
* @param widths
* @return true if everything went right
*/
public boolean setWidths(final float widths[]) {
if (widths.length != this.cells.length) {
return false;
}
System.arraycopy(widths, 0, this.widths, 0, this.cells.length);
float total = 0;
this.calculated = false;
for (int k = 0; k < widths.length; ++k) {
final PdfPCell cell = this.cells[k];
if (cell == null) {
total += widths[k];
continue;
}
cell.setLeft(total);
final int last = k + cell.getColspan();
for (; k < last; ++k) {
total += widths[k];
}
--k;
cell.setRight(total);
cell.setTop(0);
}
return true;
}
/**
* Initializes the extra heights array.
* @since 2.1.6
*/
public void initExtraHeights() {
this.extraHeights = new float[this.cells.length];
for (int i = 0; i < this.extraHeights.length; i++) {
this.extraHeights[i] = 0;
}
}
/**
* Sets an extra height for a cell.
* @param cell the index of the cell that needs an extra height
* @param height the extra height
* @since 2.1.6
*/
public void setExtraHeight(final int cell, final float height) {
if (cell < 0 || cell >= this.cells.length) {
return;
}
this.extraHeights[cell] = height;
}
/**
* Calculates the heights of each cell in the row.
*
* @return the maximum height of the row.
*/
private float calculateHeights() {
this.maxHeight = 0;
for (final PdfPCell cell : this.cells) {
float height = 0;
if (cell == null) {
continue;
}
else {
height = cell.getMaxHeight();
if (height > this.maxHeight && cell.getRowspan() == 1) {
this.maxHeight = height;
}
}
}
this.calculated = true;
return this.maxHeight;
}
/**
* Writes the border and background of one cell in the row.
*
* @param xPos The x-coordinate where the table starts on the canvas
* @param yPos The y-coordinate where the table starts on the canvas
* @param currentMaxHeight The height of the cell to be drawn.
* @param cell
* @param canvases
* @since 2.1.6 extra parameter currentMaxHeight
*/
private void writeBorderAndBackground(final float xPos, final float yPos, final float currentMaxHeight, final PdfPCell cell, final PdfContentByte[] canvases) {
final Color background = cell.getBackgroundColor();
if (background != null || cell.hasBorders()) {
// Add xPos resp. yPos to the cell's coordinates for absolute coordinates
final float right = cell.getRight() + xPos;
final float top = cell.getTop() + yPos;
final float left = cell.getLeft() + xPos;
final float bottom = top - currentMaxHeight;
if (background != null) {
final PdfContentByte backgr = canvases[PdfPTable.BACKGROUNDCANVAS];
backgr.setColorFill(background);
backgr.rectangle(left, bottom, right - left, top - bottom);
backgr.fill();
}
if (cell.hasBorders()) {
final Rectangle newRect = new Rectangle(left, bottom, right, top);
// Clone non-position parameters except for the background color
newRect.cloneNonPositionParameters(cell);
newRect.setBackgroundColor(null);
// Write the borders on the line canvas
final PdfContentByte lineCanvas = canvases[PdfPTable.LINECANVAS];
lineCanvas.rectangle(newRect);
}
}
}
/**
* @since 2.1.6 private is now protected
*/
private void saveAndRotateCanvases(final PdfContentByte[] canvases, final float a, final float b, final float c, final float d, final float e, final float f) {
final int last = PdfPTable.TEXTCANVAS + 1;
if (this.canvasesPos == null) {
this.canvasesPos = new int[last * 2];
}
for (int k = 0; k < last; ++k) {
final ByteBuffer bb = canvases[k].getInternalBuffer();
this.canvasesPos[k * 2] = bb.size();
canvases[k].saveState();
canvases[k].concatCTM(a, b, c, d, e, f);
this.canvasesPos[k * 2 + 1] = bb.size();
}
}
/**
* @since 2.1.6 private is now protected
*/
private void restoreCanvases(final PdfContentByte[] canvases) {
final int last = PdfPTable.TEXTCANVAS + 1;
for (int k = 0; k < last; ++k) {
final ByteBuffer bb = canvases[k].getInternalBuffer();
final int p1 = bb.size();
canvases[k].restoreState();
if (p1 == this.canvasesPos[k * 2 + 1]) {
bb.setSize(this.canvasesPos[k * 2]);
}
}
}
/**
* @since 3.0.0 protected is now public static
*/
public static float setColumn(final ColumnText ct, final float left, final float bottom, float right, float top) {
if (left > right) {
right = left;
}
if (bottom > top) {
top = bottom;
}
ct.setSimpleColumn(left, bottom, right, top);
return top;
}
/**
* Writes a number of cells (not necessarily all cells).
*
* @param colStart The first column to be written.
* Remember that the column index starts with 0.
* @param colEnd The last column to be written.
* Remember that the column index starts with 0.
* If -1, all the columns to the end are written.
* @param xPos The x-coordinate where the table starts on the canvas
* @param yPos The y-coordinate where the table starts on the canvas
*/
public void writeCells(int colStart, int colEnd, float xPos, final float yPos, final PdfContentByte[] canvases) {
if (!this.calculated) {
calculateHeights();
}
if (colEnd < 0) {
colEnd = this.cells.length;
} else {
colEnd = Math.min(colEnd, this.cells.length);
}
if (colStart < 0) {
colStart = 0;
}
if (colStart >= colEnd) {
return;
}
int newStart;
for (newStart = colStart; newStart >= 0; --newStart) {
if (this.cells[newStart] != null) {
break;
}
if (newStart > 0) {
xPos -= this.widths[newStart - 1];
}
}
if (newStart < 0) {
newStart = 0;
}
if (this.cells[newStart] != null) {
xPos -= this.cells[newStart].getLeft();
}
for (int k = newStart; k < colEnd; ++k) {
final PdfPCell cell = this.cells[k];
if (cell == null) {
continue;
}
final float currentMaxHeight = this.maxHeight + this.extraHeights[k];
writeBorderAndBackground(xPos, yPos, currentMaxHeight, cell, canvases);
Image img = cell.getImage();
float tly = cell.getTop() + yPos - cell.getEffectivePaddingTop();
if (cell.getHeight() <= currentMaxHeight) {
switch (cell.getVerticalAlignment()) {
case Element.ALIGN_BOTTOM:
tly = cell.getTop() + yPos - currentMaxHeight + cell.getHeight()
- cell.getEffectivePaddingTop();
break;
case Element.ALIGN_MIDDLE:
tly = cell.getTop() + yPos + (cell.getHeight() - currentMaxHeight) / 2
- cell.getEffectivePaddingTop();
break;
default:
break;
}
}
if (img != null) {
if (cell.getRotation() != 0) {
img = Image.getInstance(img);
img.setRotation(img.getImageRotation() + (float)(cell.getRotation() * Math.PI / 180.0));
}
boolean vf = false;
if (cell.getHeight() > currentMaxHeight) {
img.scalePercent(100);
final float scale = (currentMaxHeight - cell.getEffectivePaddingTop() - cell
.getEffectivePaddingBottom())
/ img.getScaledHeight();
img.scalePercent(scale * 100);
vf = true;
}
float left = cell.getLeft() + xPos
+ cell.getEffectivePaddingLeft();
if (vf) {
switch (cell.getHorizontalAlignment()) {
case Element.ALIGN_CENTER:
left = xPos
+ (cell.getLeft() + cell.getEffectivePaddingLeft()
+ cell.getRight()
- cell.getEffectivePaddingRight() - img
.getScaledWidth()) / 2;
break;
case Element.ALIGN_RIGHT:
left = xPos + cell.getRight()
- cell.getEffectivePaddingRight()
- img.getScaledWidth();
break;
default:
break;
}
tly = cell.getTop() + yPos - cell.getEffectivePaddingTop();
}
img.setAbsolutePosition(left, tly - img.getScaledHeight());
try {
canvases[PdfPTable.TEXTCANVAS].addImage(img);
} catch (final DocumentException e) {
throw new ExceptionConverter(e);
}
} else {
// rotation sponsored by Connection GmbH
if (cell.getRotation() == 90 || cell.getRotation() == 270) {
final float netWidth = currentMaxHeight - cell.getEffectivePaddingTop() - cell.getEffectivePaddingBottom();
final float netHeight = cell.getWidth() - cell.getEffectivePaddingLeft() - cell.getEffectivePaddingRight();
ColumnText ct = ColumnText.duplicate(cell.getColumn());
ct.setCanvases(canvases);
ct.setSimpleColumn(0, 0, netWidth + 0.001f, -netHeight);
try {
ct.go(true);
} catch (final DocumentException e) {
throw new ExceptionConverter(e);
}
float calcHeight = -ct.getYLine();
if (netWidth <= 0 || netHeight <= 0) {
calcHeight = 0;
}
if (calcHeight > 0) {
if (cell.isUseDescender()) {
calcHeight -= ct.getDescender();
}
ct = ColumnText.duplicate(cell.getColumn());
ct.setCanvases(canvases);
ct.setSimpleColumn(-0.003f, -0.001f, netWidth + 0.003f, calcHeight);
float pivotX;
float pivotY;
if (cell.getRotation() == 90) {
pivotY = cell.getTop() + yPos - currentMaxHeight + cell.getEffectivePaddingBottom();
switch (cell.getVerticalAlignment()) {
case Element.ALIGN_BOTTOM:
pivotX = cell.getLeft() + xPos + cell.getWidth() - cell.getEffectivePaddingRight();
break;
case Element.ALIGN_MIDDLE:
pivotX = cell.getLeft() + xPos + (cell.getWidth() + cell.getEffectivePaddingLeft() - cell.getEffectivePaddingRight() + calcHeight) / 2;
break;
default: //top
pivotX = cell.getLeft() + xPos + cell.getEffectivePaddingLeft() + calcHeight;
break;
}
saveAndRotateCanvases(canvases, 0,1,-1,0,pivotX,pivotY);
}
else {
pivotY = cell.getTop() + yPos - cell.getEffectivePaddingTop();
switch (cell.getVerticalAlignment()) {
case Element.ALIGN_BOTTOM:
pivotX = cell.getLeft() + xPos + cell.getEffectivePaddingLeft();
break;
case Element.ALIGN_MIDDLE:
pivotX = cell.getLeft() + xPos + (cell.getWidth() + cell.getEffectivePaddingLeft() - cell.getEffectivePaddingRight() - calcHeight) / 2;
break;
default: //top
pivotX = cell.getLeft() + xPos + cell.getWidth() - cell.getEffectivePaddingRight() - calcHeight;
break;
}
saveAndRotateCanvases(canvases, 0,-1,1,0,pivotX,pivotY);
}
try {
ct.go();
} catch (final DocumentException e) {
throw new ExceptionConverter(e);
} finally {
restoreCanvases(canvases);
}
}
}
else {
final float fixedHeight = cell.getFixedHeight();
float rightLimit = cell.getRight() + xPos
- cell.getEffectivePaddingRight();
float leftLimit = cell.getLeft() + xPos
+ cell.getEffectivePaddingLeft();
if (cell.isNoWrap()) {
switch (cell.getHorizontalAlignment()) {
case Element.ALIGN_CENTER:
rightLimit += 10000;
leftLimit -= 10000;
break;
case Element.ALIGN_RIGHT:
if (cell.getRotation() == 180) {
rightLimit += RIGHT_LIMIT;
}
else {
leftLimit -= RIGHT_LIMIT;
}
break;
default:
if (cell.getRotation() == 180) {
leftLimit -= RIGHT_LIMIT;
}
else {
rightLimit += RIGHT_LIMIT;
}
break;
}
}
final ColumnText ct = ColumnText.duplicate(cell.getColumn());
ct.setCanvases(canvases);
float bry = tly
- (currentMaxHeight
- cell.getEffectivePaddingTop() - cell.getEffectivePaddingBottom());
if (fixedHeight > 0) {
if (cell.getHeight() > currentMaxHeight) {
tly = cell.getTop() + yPos - cell.getEffectivePaddingTop();
bry = cell.getTop() + yPos - currentMaxHeight + cell.getEffectivePaddingBottom();
}
}
if ((tly > bry || ct.zeroHeightElement()) && leftLimit < rightLimit) {
ct.setSimpleColumn(leftLimit, bry - 0.001f, rightLimit, tly);
if (cell.getRotation() == 180) {
final float shx = leftLimit + rightLimit;
final float shy = yPos + yPos - currentMaxHeight + cell.getEffectivePaddingBottom() - cell.getEffectivePaddingTop();
saveAndRotateCanvases(canvases, -1,0,0,-1,shx,shy);
}
try {
ct.go();
} catch (final DocumentException e) {
throw new ExceptionConverter(e);
} finally {
if (cell.getRotation() == 180) {
restoreCanvases(canvases);
}
}
}
}
}
final PdfPCellEvent evt = cell.getCellEvent();
if (evt != null) {
final Rectangle rect = new Rectangle(cell.getLeft() + xPos, cell.getTop()
+ yPos - currentMaxHeight, cell.getRight() + xPos, cell.getTop()
+ yPos);
evt.cellLayout(cell, rect, canvases);
}
}
}
/**
* Checks if the dimensions of the columns were calculated.
*
* @return true if the dimensions of the columns were calculated
*/
public boolean isCalculated() {
return this.calculated;
}
/**
* Gets the maximum height of the row (i.e. of the 'highest' cell).
*
* @return the maximum height of the row
*/
public float getMaxHeights() {
if (this.calculated) {
return this.maxHeight;
}
return calculateHeights();
}
/**
* Changes the maximum height of the row (to make it higher).
* (added by Jin-Hsia Yang)
*
* @param maxHeight the new maximum height
*/
public void setMaxHeights(final float maxHeight) {
this.maxHeight = maxHeight;
}
//end add
float[] getEventWidth(final float xPos) {
int n = 0;
for (final PdfPCell cell : this.cells) {
if (cell != null) {
++n;
}
}
final float width[] = new float[n + 1];
n = 0;
width[n++] = xPos;
for (final PdfPCell cell : this.cells) {
if (cell != null) {
width[n] = width[n - 1] + cell.getWidth();
++n;
}
}
return width;
}
/**
* Splits a row to newHeight.
* The returned row is the remainder. It will return null if the newHeight
* was so small that only an empty row would result.
*
* @param new_height the new height
* @return the remainder row or null if the newHeight was so small that only
* an empty row would result
*/
public PdfPRow splitRow(final PdfPTable table, final int rowIndex, final float new_height) {
final PdfPCell newCells[] = new PdfPCell[this.cells.length];
final float fixHs[] = new float[this.cells.length];
final float minHs[] = new float[this.cells.length];
boolean allEmpty = true;
for (int k = 0; k < this.cells.length; ++k) {
float newHeight = new_height;
final PdfPCell cell = this.cells[k];
if (cell == null) {
int index = rowIndex;
if (table.rowSpanAbove(index, k)) {
newHeight += table.getRowHeight(index);
while (table.rowSpanAbove(--index, k)) {
newHeight += table.getRowHeight(index);
}
final PdfPRow row = table.getRow(index);
if (row != null && row.getCells()[k] != null) {
newCells[k] = new PdfPCell(row.getCells()[k]);
newCells[k].consumeHeight(newHeight);
newCells[k].setRowspan(row.getCells()[k].getRowspan() - rowIndex + index);
allEmpty = false;
}
}
continue;
}
fixHs[k] = cell.getFixedHeight();
minHs[k] = cell.getMinimumHeight();
final Image img = cell.getImage();
final PdfPCell newCell = new PdfPCell(cell);
if (img != null) {
if (newHeight > cell.getEffectivePaddingBottom() + cell.getEffectivePaddingTop() + 2) {
newCell.setPhrase(null);
allEmpty = false;
}
}
else {
float y;
final ColumnText ct = ColumnText.duplicate(cell.getColumn());
final float left = cell.getLeft() + cell.getEffectivePaddingLeft();
final float bottom = cell.getTop() + cell.getEffectivePaddingBottom() - newHeight;
final float right = cell.getRight() - cell.getEffectivePaddingRight();
final float top = cell.getTop() - cell.getEffectivePaddingTop();
switch (cell.getRotation()) {
case 90:
case 270:
y = setColumn(ct, bottom, left, top, right);
break;
default:
y = setColumn(ct, left, bottom, cell.isNoWrap() ? RIGHT_LIMIT : right, top);
break;
}
int status;
try {
status = ct.go(true);
}
catch (final DocumentException e) {
throw new ExceptionConverter(e);
}
final boolean thisEmpty = ct.getYLine() == y;
if (thisEmpty) {
newCell.setColumn(ColumnText.duplicate(cell.getColumn()));
ct.setFilledWidth(0);
}
else if ((status & ColumnText.NO_MORE_TEXT) == 0) {
newCell.setColumn(ct);
ct.setFilledWidth(0);
} else {
newCell.setPhrase(null);
}
allEmpty = allEmpty && thisEmpty;
}
newCells[k] = newCell;
cell.setFixedHeight(newHeight);
}
if (allEmpty) {
for (int k = 0; k < this.cells.length; ++k) {
final PdfPCell cell = this.cells[k];
if (cell == null) {
continue;
}
if (fixHs[k] > 0) {
cell.setFixedHeight(fixHs[k]);
} else {
cell.setMinimumHeight(minHs[k]);
}
}
return null;
}
calculateHeights();
final PdfPRow split = new PdfPRow(newCells);
split.widths = this.widths.clone();
split.calculateHeights();
return split;
}
/**
* Returns the array of cells in the row.
* Please be extremely careful with this method.
* Use the cells as read only objects.
*
* @return an array of cells
* @since 2.1.1
*/
public PdfPCell[] getCells() {
return this.cells;
}
}
