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- /* $Id$
- * Copyright (C) 2001 The Apache Software Foundation. All rights reserved.
- * For details on use and redistribution please refer to the
- * LICENSE file included with these sources."
- */
-
- package org.apache.fop.fo;
-
- // FOP
- import org.apache.fop.layout.Area;
- import org.apache.fop.messaging.MessageHandler;
- import org.apache.fop.layout.BlockArea;
- import org.apache.fop.layout.FontState;
- import org.apache.fop.layout.*;
- import org.apache.fop.datatypes.*;
- import org.apache.fop.fo.properties.*;
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.system.BufferManager;
-
- /**
- * a text node in the formatting object tree
- */
- public class FOText extends FONode {
-
- // protected char[] ca;
- protected int start;
- protected int length;
-
- FontState fs;
- float red;
- float green;
- float blue;
- int wrapOption;
- int whiteSpaceCollapse;
- int verticalAlign;
-
- // Textdecoration
- protected boolean underlined = false;
- protected boolean overlined = false;
- protected boolean lineThrough = false;
-
- TextState ts;
-
-
- public FOText(char[] chars, int s, int e, FObj parent) {
- super(parent);
- this.start = 0;
- char ca[] = new char[e - s];
- for (int i = s; i < e; i++)
- ca[i - s] = chars[i];
- this.length = e - s;
- this.bufferManager = parent.bufferManager;
- if (this.bufferManager != null) {
- bufferManager.writeBuffer((Object) this, ca);
- }
- else {
- System.out.println("abnormal exit");
- System.exit(0);
- }
- }
-
- public void setUnderlined(boolean ul) {
- this.underlined = ul;
- }
-
- public void setOverlined(boolean ol) {
- this.overlined = ol;
- }
-
- public void setLineThrough(boolean lt) {
- this.lineThrough = lt;
- }
-
-
- public boolean willCreateArea()
- {
- char ca[] = this.bufferManager.readBuffer((Object) this);
- this.whiteSpaceCollapse = this.parent.properties.get(
- "white-space-collapse").getEnum();
- if(this.whiteSpaceCollapse == WhiteSpaceCollapse.FALSE && length > 0) {
- return true;
- }
-
- for (int i = start; i < start + length; i++) {
- char ch = ca[i];
- if (!((ch == ' ') || (ch == '\n') || (ch == '\r') ||
- (ch == '\t'))) { // whitespace
- return true;
- }
- }
- return false;
- }
-
- public Status layout(Area area) throws FOPException {
- char ca[] = this.bufferManager.readBuffer((Object) this);
- if (!(area instanceof BlockArea)) {
- MessageHandler.errorln("WARNING: text outside block area" +
- new String(ca, start, length));
- return new Status(Status.OK);
- }
- if (this.marker == START) {
- String fontFamily =
- this.parent.properties.get("font-family").getString();
- String fontStyle =
- this.parent.properties.get("font-style").getString();
- String fontWeight =
- this.parent.properties.get("font-weight").getString();
- int fontSize = this.parent.properties.get(
- "font-size").getLength().mvalue();
- // font-variant support
- // added by Eric SCHAEFFER
- int fontVariant = this.parent.properties.get("font-variant").getEnum();
-
- this.fs = new FontState(area.getFontInfo(), fontFamily,
- fontStyle, fontWeight, fontSize, fontVariant);
-
- ColorType c =
- this.parent.properties.get("color").getColorType();
- this.red = c.red();
- this.green = c.green();
- this.blue = c.blue();
-
- this.verticalAlign = this.parent.properties.get("vertical-align").getEnum();
-
- this.wrapOption =
- this.parent.properties.get("wrap-option").getEnum();
- this.whiteSpaceCollapse = this.parent.properties.get(
- "white-space-collapse").getEnum();
- this.ts = new TextState();
- ts.setUnderlined(underlined);
- ts.setOverlined(overlined);
- ts.setLineThrough(lineThrough);
-
- this.marker = this.start;
- }
- int orig_start = this.marker;
- this.marker = addText((BlockArea)area, fs, red, green, blue,
- wrapOption, this.getLinkSet(), whiteSpaceCollapse, ca,
- this.marker, length, ts, verticalAlign);
- if (this.marker == -1) {
-
-
- // commented out by Hani Elabed, 11/28/2000
- // if this object has been laid out
- // successfully, leave it alone....
- // Now, to prevent the array index out of
- // bound of LineArea.addText(), I have added
- // the following test at the beginning of that method.
- // if( start == -1 ) return -1;
- // see LineArea.addText()
-
- //this.marker = 0;
- return new Status(Status.OK);
- } else if (this.marker != orig_start) {
- return new Status(Status.AREA_FULL_SOME);
- } else {
- return new Status(Status.AREA_FULL_NONE);
- }
- }
-
- // font-variant support : addText is a wrapper for addRealText
- // added by Eric SCHAEFFER
- public static int addText(BlockArea ba, FontState fontState, float red, float green,
- float blue, int wrapOption, LinkSet ls,
- int whiteSpaceCollapse, char data[], int start, int end,
- TextState textState, int vAlign) {
- if (fontState.getFontVariant() == FontVariant.SMALL_CAPS) {
- FontState smallCapsFontState;
- try {
- int smallCapsFontHeight = (int) (((double) fontState.getFontSize()) * 0.8d);
- smallCapsFontState = new FontState(
- fontState.getFontInfo(),
- fontState.getFontFamily(),
- fontState.getFontStyle(),
- fontState.getFontWeight(),
- smallCapsFontHeight,
- FontVariant.NORMAL);
- } catch (FOPException ex) {
- smallCapsFontState = fontState;
- MessageHandler.errorln("Error creating small-caps FontState: " + ex.getMessage());
- }
-
- // parse text for upper/lower case and call addRealText
- char c;
- boolean isLowerCase;
- int caseStart;
- FontState fontStateToUse;
- for (int i = start; i < end; ) {
- caseStart = i;
- c = data[i];
- isLowerCase = (java.lang.Character.isLetter(c) && java.lang.Character.isLowerCase(c));
- while (isLowerCase == (java.lang.Character.isLetter(c) && java.lang.Character.isLowerCase(c))) {
- if (isLowerCase) {
- data[i] = java.lang.Character.toUpperCase(c);
- }
- i++;
- if (i == end)
- break;
- c = data[i];
- }
- if (isLowerCase) {
- fontStateToUse = smallCapsFontState;
- } else {
- fontStateToUse = fontState;
- }
- int index = addRealText(ba, fontStateToUse, red, green, blue, wrapOption, ls,
- whiteSpaceCollapse, data, caseStart, i, textState, vAlign);
- if (index != -1) {
- return index;
- }
- }
-
- return -1;
- }
-
- // font-variant normal
- return addRealText(ba, fontState, red, green, blue, wrapOption, ls,
- whiteSpaceCollapse, data, start, end, textState, vAlign);
- }
-
- protected static int addRealText(BlockArea ba, FontState fontState, float red, float green,
- float blue, int wrapOption, LinkSet ls,
- int whiteSpaceCollapse, char data[], int start, int end,
- TextState textState, int vAlign) {
- int ts, te;
- char[] ca;
-
- ts = start;
- te = end;
- ca = data;
-
- LineArea la = ba.getCurrentLineArea();
- if (la == null) {
- return start;
- }
-
- la.changeFont(fontState);
- la.changeColor(red, green, blue);
- la.changeWrapOption(wrapOption);
- la.changeWhiteSpaceCollapse(whiteSpaceCollapse);
- la.changeVerticalAlign(vAlign);
- // la.changeHyphenation(language, country, hyphenate,
- // hyphenationChar, hyphenationPushCharacterCount,
- // hyphenationRemainCharacterCount);
- ba.setupLinkSet(ls);
-
- ts = la.addText(ca, ts, te, ls, textState);
- // this.hasLines = true;
-
- while (ts != -1) {
- la = ba.createNextLineArea();
- if (la == null) {
- return ts;
- }
- la.changeFont(fontState);
- la.changeColor(red, green, blue);
- la.changeWrapOption(wrapOption);
- la.changeWhiteSpaceCollapse(
- whiteSpaceCollapse);
- // la.changeHyphenation(language, country, hyphenate,
- // hyphenationChar, hyphenationPushCharacterCount,
- // hyphenationRemainCharacterCount);
- ba.setupLinkSet(ls);
-
- ts = la.addText(ca, ts, te, ls, textState);
- }
- return -1;
- }
-
-
- }
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