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/*
* Copyright 1999-2004 The Apache Software Foundation.
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.fo.flow;
// XML
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
// FOP
import org.apache.fop.apps.FOPException;
import org.apache.fop.datatypes.ColorType;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.FObj;
import org.apache.fop.fo.FOTreeVisitor;
import org.apache.fop.fo.properties.CommonAccessibility;
import org.apache.fop.fo.properties.CommonAural;
import org.apache.fop.fo.properties.CommonBackground;
import org.apache.fop.fo.properties.CommonBorderAndPadding;
import org.apache.fop.fo.properties.CommonRelativePosition;
/**
* Class modelling the fo:table-cell object. See Sec. 6.7.10 of the XSL-FO
* Standard.
*/
public class TableCell extends FObj {
// private int spaceBefore;
// private int spaceAfter;
private ColorType backgroundColor;
private int numColumnsSpanned;
private int numRowsSpanned;
private int iColNumber = -1; // uninitialized
/**
* Offset of content rectangle in inline-progression-direction,
* relative to table.
*/
protected int startOffset;
/**
* Dimension of allocation rectangle in inline-progression-direction,
* determined by the width of the column(s) occupied by the cell
*/
protected int width;
/**
* Offset of content rectangle, in block-progression-direction,
* relative to the row.
*/
protected int beforeOffset = 0;
/**
* Offset of content rectangle, in inline-progression-direction,
* relative to the column start edge.
*/
protected int startAdjust = 0;
/**
* Adjust to theoretical column width to obtain content width
* relative to the column start edge.
*/
protected int widthAdjust = 0;
/** For collapsed border style */
protected int borderHeight = 0;
/** Minimum content height of cell. */
protected int minCellHeight = 0;
/** Height of cell */
protected int height = 0;
/** Ypos of cell ??? */
protected int top;
/** corresponds to display-align property */
protected int verticalAlign;
/** is this cell relatively aligned? */
protected boolean bRelativeAlign = false;
// boolean setup = false;
private boolean bSepBorders = true;
/**
* Set to true if all content completely laid out.
*/
private boolean bDone = false;
/**
* Border separation value in the block-progression dimension.
* Used in calculating cells height.
*/
private int borderSeparation = 0;
/**
* @param parent FONode that is the parent of this object
*/
public TableCell(FONode parent) {
super(parent);
}
/**
* @see org.apache.fop.fo.FObj#addProperties
*/
protected void addProperties(Attributes attlist) throws FOPException {
super.addProperties(attlist);
doSetup(); // init some basic property values
getFOInputHandler().startCell(this);
}
/**
* Set position relative to table (set by body?)
*/
public void setStartOffset(int offset) {
startOffset = offset;
}
/**
* Sets the width of the cell. Initially this width is the same as the
* width of the column containing this cell, or the sum of the spanned
* columns if numColumnsSpanned > 1
* @param width the width of the cell (in millipoints ??)
*/
public void setWidth(int width) {
this.width = width;
}
/**
* @return number of the column containing this cell
*/
public int getColumnNumber() {
return iColNumber;
}
/**
* @return the number of columns spanned by this cell
*/
public int getNumColumnsSpanned() {
return numColumnsSpanned;
}
/**
* @return the number of rows spanned by this cell
*/
public int getNumRowsSpanned() {
return numRowsSpanned;
}
private void doSetup() {
// Common Accessibility Properties
CommonAccessibility mAccProps = propMgr.getAccessibilityProps();
// Common Aural Properties
CommonAural mAurProps = propMgr.getAuralProps();
// Common Border, Padding, and Background Properties
CommonBorderAndPadding bap = propMgr.getBorderAndPadding();
CommonBackground bProps = propMgr.getBackgroundProps();
// Common Relative Position Properties
CommonRelativePosition mRelProps = propMgr.getRelativePositionProps();
// this.propertyList.get("border-after-precedence");
// this.propertyList.get("border-before-precendence");
// this.propertyList.get("border-end-precendence");
// this.propertyList.get("border-start-precendence");
// this.propertyList.get("block-progression-dimension");
// this.propertyList.get("column-number");
// this.propertyList.get("display-align");
// this.propertyList.get("relative-align");
// this.propertyList.get("empty-cells");
// this.propertyList.get("ends-row");
// this.propertyList.get("height");
setupID();
// this.propertyList.get("number-columns-spanned");
// this.propertyList.get("number-rows-spanned");
// this.propertyList.get("starts-row");
// this.propertyList.get("width");
this.iColNumber =
propertyList.get(PR_COLUMN_NUMBER).getNumber().intValue();
if (iColNumber < 0) {
iColNumber = 0;
}
this.numColumnsSpanned =
this.propertyList.get(PR_NUMBER_COLUMNS_SPANNED).getNumber().intValue();
if (numColumnsSpanned < 1) {
numColumnsSpanned = 1;
}
this.numRowsSpanned =
this.propertyList.get(PR_NUMBER_ROWS_SPANNED).getNumber().intValue();
if (numRowsSpanned < 1) {
numRowsSpanned = 1;
}
this.backgroundColor =
this.propertyList.get(PR_BACKGROUND_COLOR).getColorType();
bSepBorders = (this.propertyList.get(PR_BORDER_COLLAPSE).getEnum()
== BorderCollapse.SEPARATE);
calcBorders(propMgr.getBorderAndPadding());
// Vertical cell alignment
verticalAlign = this.propertyList.get(PR_DISPLAY_ALIGN).getEnum();
if (verticalAlign == DisplayAlign.AUTO) {
// Depends on all cells starting in row
bRelativeAlign = true;
verticalAlign = this.propertyList.get(PR_RELATIVE_ALIGN).getEnum();
} else {
bRelativeAlign = false; // Align on a per-cell basis
}
this.minCellHeight =
this.propertyList.get(PR_HEIGHT).getLength().getValue();
}
/**
* Calculate cell border and padding, including offset of content
* rectangle from the theoretical grid position.
*/
private void calcBorders(CommonBorderAndPadding bp) {
if (this.bSepBorders) {
/*
* Easy case.
* Cell border is the property specified directly on cell.
* Offset content rect by half the border-separation value,
* in addition to the border and padding values. Note:
* border-separate should only be specified on the table object,
* but it inherits.
*/
int iSep = propertyList.get(
PR_BORDER_SEPARATION | CP_INLINE_PROGRESSION_DIRECTION).getLength().getValue();
this.startAdjust = iSep / 2 + bp.getBorderStartWidth(false)
+ bp.getPaddingStart(false);
this.widthAdjust = startAdjust + iSep - iSep / 2
+ bp.getBorderEndWidth(false)
+ bp.getPaddingEnd(false);
// Offset of content rectangle in the block-progression direction
borderSeparation = propertyList.get(
PR_BORDER_SEPARATION | CP_BLOCK_PROGRESSION_DIRECTION).getLength().getValue();
this.beforeOffset = borderSeparation / 2
+ bp.getBorderBeforeWidth(false)
+ bp.getPaddingBefore(false);
} else {
// System.err.println("Collapse borders");
/*
* Hard case.
* Cell border is combination of other cell borders, or table
* border for edge cells. Also seems to border values specified
* on row and column FO in the table (if I read CR correclty.)
*/
// Set up before and after borders, taking into account row
// and table border properties.
// ??? What about table-body, header,footer
/*
* We can't calculate before and after because we aren't sure
* whether this row will be the first or last in its area, due
* to redoing break decisions (at least in the "new" architecture.)
* So in the general case, we will calculate two possible values:
* the first/last one and the "middle" one.
* Example: border-before
* 1. If the cell is in the first row in the first table body, it
* will combine with the last row of the header, or with the
* top (before) table border if there is no header.
* 2. Otherwise there are two cases:
* a. the row is first in its (non-first) Area.
* The border can combine with either:
* i. the last row of table-header and its cells, or
* ii. the table before border (no table-header or it is
* omitted on non-first Areas).
* b. the row isn't first in its Area.
* The border combines with the border of the previous
* row and the cells which end in that row.
*/
/*
* if-first
* Calculate the effective border of the cell before-border,
* it's parent row before-border, the last header row after-border,
* the after border of the cell(s) which end in the last header
* row.
*/
/*
* if-not-first
* Calculate the effective border of the cell before-border,
* it's parent row before-border, the previous row after-border,
* the after border of the cell(s) which end in the previous
* row.
*/
/* ivan demakov */
int borderStart = bp.getBorderStartWidth(false);
int borderEnd = bp.getBorderEndWidth(false);
int borderBefore = bp.getBorderBeforeWidth(false);
int borderAfter = bp.getBorderAfterWidth(false);
this.startAdjust = borderStart / 2 + bp.getPaddingStart(false);
this.widthAdjust = startAdjust + borderEnd / 2
+ bp.getPaddingEnd(false);
this.beforeOffset = borderBefore / 2 + bp.getPaddingBefore(false);
// Half border height to fix overestimate of area size!
this.borderHeight = (borderBefore + borderAfter) / 2;
}
}
/**
*
* @return true (TableCell can contain Markers)
*/
protected boolean containsMarkers() {
return true;
}
/**
* This is a hook for an FOTreeVisitor subclass to be able to access
* this object.
* @param fotv the FOTreeVisitor subclass that can access this object.
* @see org.apache.fop.fo.FOTreeVisitor
*/
public void acceptVisitor(FOTreeVisitor fotv) {
fotv.serveTableCell(this);
}
protected void end() {
getFOInputHandler().endCell(this);
}
public String getName() {
return "fo:table-cell";
}
}
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