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Open Source (LGPL) JavaFX PDF Viewer for NetBeans plugin
/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/support/
*
* (C) Copyright 1997-2017 IDRsolutions and Contributors.
*
* This file is part of JPedal/JPDF2HTML5
*
@LICENSE@
*
* ---------------
* TextState.java
* ---------------
*/
package org.jpedal.objects;
import org.jpedal.utils.StringUtils;
/**
* holds the current text state
*/
public class TextState {
float kerningAdded;
/**
* orientation of text using contstants from PdfData
*/
public int writingMode;
/**
* last Tm value
*/
private final float[][] TmAtStart = new float[3][3];
/**
* matrix operations for calculating start of text
*/
public float[][] Tm = new float[3][3];
private String font_ID = "";
/**
* leading setin text
*/
private float TL;
/**
* gap between chars set by Tc command
*/
private float character_spacing;
/**
* current Tfs value
*/
private float Tfs = 1;
/**
* text rise set in stream
*/
private float text_rise;
/**
* text height - see also Tfs
*/
private float th = 1;
/**
* gap inserted with spaces - set by Tw
*/
private float word_spacing;
private boolean hasFontChanged;
/**
* set Trm values
*/
public TextState() {
Tm[0][0] = 1;
Tm[0][1] = 0;
Tm[0][2] = 0;
Tm[1][0] = 0;
Tm[1][1] = 1;
Tm[1][2] = 0;
Tm[2][0] = 0;
Tm[2][1] = 0;
Tm[2][2] = 1;
TmAtStart[0][0] = 1;
TmAtStart[0][1] = 0;
TmAtStart[0][2] = 0;
TmAtStart[1][0] = 0;
TmAtStart[1][1] = 1;
TmAtStart[1][2] = 0;
TmAtStart[2][0] = 0;
TmAtStart[2][1] = 0;
TmAtStart[2][2] = 1;
}
/**
* get Tm at start of line
*/
public float[][] getTMAtLineStart() {
return TmAtStart;
}
/**
* set Tm at start of line
*/
public void setTMAtLineStart() {
//keep position in case we need
TmAtStart[0][0] = Tm[0][0];
TmAtStart[0][1] = Tm[0][1];
TmAtStart[0][2] = Tm[0][2];
TmAtStart[1][0] = Tm[1][0];
TmAtStart[1][1] = Tm[1][1];
TmAtStart[1][2] = Tm[1][2];
TmAtStart[2][0] = Tm[2][0];
TmAtStart[2][1] = Tm[2][1];
TmAtStart[2][2] = Tm[2][2];
}
//////////////////////////////////////////////////////////////////////////
/**
* set Horizontal Scaling
*/
public final void setHorizontalScaling(final float th) {
this.th = th;
}
///////////////////////////////////////////////////////////////////////
/**
* get font id
*/
public final String getFontID() {
return font_ID;
}
///////////////////////////////////////////////////////////////////////////
/**
* get Text rise
*/
public final float getTextRise() {
return text_rise;
}
////////////////////////////////////////////////////////////////////////
/**
* get character spacing
*/
public final float getCharacterSpacing() {
return character_spacing;
}
/////////////////////////////////////////////////////////////////////////
/**
* get word spacing
*/
public final float getWordSpacing() {
return word_spacing;
}
///////////////////////////////////////////////////////////////////////////
/**
* set font tfs
*/
public final void setLeading(final float TL) {
this.TL = TL;
}
/////////////////////////////////////////////////////////////////////////
/**
* get font tfs
*/
public final float getTfs() {
return Tfs;
}
/////////////////////////////////////////////////////////////////////////
/**
* get Horizontal Scaling
*/
public final float getHorizontalScaling() {
return th;
}
/**
* set Text rise
*/
public final void setTextRise(final float text_rise) {
this.text_rise = text_rise;
}
/**
* get font tfs
*/
public final float getLeading() {
return TL;
}
/////////////////////////////////////////////////////////////////////////
/**
* clone object
*/
/*final public Object clone()
{
Object o = null;
try
{
o = super.clone();
}
catch( Exception e )
{
LogWriter.writeLog( "Unable to clone " + e );
}
return o;
}*/
/////////////////////////////////////////////////////////////////////////
public final TextState deepCopy() {
final TextState ts = new TextState();
ts.writingMode = writingMode;
if (TmAtStart != null) {
for (int i = 0; i < 3; i++) {
System.arraycopy(TmAtStart[i], 0, ts.TmAtStart[i], 0, 3);
}
}
if (Tm != null) {
for (int i = 0; i < 3; i++) {
System.arraycopy(Tm[i], 0, ts.Tm[i], 0, 3);
}
}
if (font_ID != null) {
ts.font_ID = new String(StringUtils.toBytes(font_ID));
}
ts.TL = TL;
ts.character_spacing = character_spacing;
ts.Tfs = Tfs;
ts.text_rise = text_rise;
ts.th = th;
ts.word_spacing = word_spacing;
ts.hasFontChanged = hasFontChanged;
return ts;
}
/**
* set word spacing
*/
public final void setWordSpacing(final float word_spacing) {
this.word_spacing = word_spacing;
}
/**
* set character spacing
*/
public final void setCharacterSpacing(final float character_spacing) {
this.character_spacing = character_spacing;
}
//////////////////////////////////////////////////////////////////////////
/**
* set font tfs to default
*/
public final void resetTm() {
Tm[0][0] = 1;
Tm[0][1] = 0;
Tm[0][2] = 0;
Tm[1][0] = 0;
Tm[1][1] = 1;
Tm[1][2] = 0;
Tm[2][0] = 0;
Tm[2][1] = 0;
Tm[2][2] = 1;
//keep position in case we need
setTMAtLineStart();
}
public boolean hasFontChanged() {
return hasFontChanged;
}
public void setFontChanged(final boolean status) {
hasFontChanged = status;
}
public void TF(final float Tfs, final String fontID) {
//set global variables to new values
this.Tfs = Tfs;
font_ID = fontID;
//flag font has changed
hasFontChanged = true;
}
public void setLastKerningAdded(final float spacingAdded) {
this.kerningAdded = spacingAdded;
}
public float getLastKerningAdded() {
return kerningAdded;
}
}