com.itextpdf.io.font.FontMetrics Maven / Gradle / Ivy
/*
This file is part of the iText (R) project.
Copyright (c) 1998-2021 iText Group NV
Authors: Bruno Lowagie, Paulo Soares, et al.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License version 3
as published by the Free Software Foundation with the addition of the
following permission added to Section 15 as permitted in Section 7(a):
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or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Affero General Public License for more details.
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*/
package com.itextpdf.io.font;
public class FontMetrics {
protected float normalizationCoef = 1f;
// head.unitsPerEm
private int unitsPerEm = 1000;
// maxp.numGlyphs
private int numOfGlyphs;
// hmtx
private int[] glyphWidths;
// os_2.sTypoAscender * normalization
private int typoAscender = 800;
// os_2.sTypoDescender * normalization
private int typoDescender = -200;
// os_2.sCapHeight * normalization
private int capHeight = 700;
// os_2.sxHeight * normalization
private int xHeight = 0;
// post.italicAngle
private float italicAngle = 0;
// llx: head.xMin * normalization; lly: head.yMin * normalization
// urx: head.xMax * normalization; ury: head.yMax * normalization
private int[] bbox = new int[]{-50, -200, 1000, 900};
// hhea.Ascender * normalization
private int ascender;
// hhea.Descender * normalization
private int descender;
// hhea.LineGap * normaliztion (leading)
private int lineGap;
// os_2.winAscender * normalization
private int winAscender;
// os_2.winDescender * normalization
private int winDescender;
// hhea.advanceWidthMax * normalization
private int advanceWidthMax;
// (post.underlinePosition - post.underlineThickness / 2) * normalization
private int underlinePosition = -100;
// post.underlineThickness * normalization
private int underlineThickness = 50;
// os_2.yStrikeoutPosition * normalization
private int strikeoutPosition;
// os_2.yStrikeoutSize * normalization
private int strikeoutSize;
// os_2.ySubscriptYSize * normalization
private int subscriptSize;
// -os_2.ySubscriptYOffset * normalization
private int subscriptOffset;
// os_2.ySuperscriptYSize * normalization
private int superscriptSize;
// os_2.ySuperscriptYOffset * normalization
private int superscriptOffset;
// in type1/cff it is stdVW
private int stemV = 80;
// in type1/cff it is stdHW
private int stemH = 0;
// post.isFixedPitch (monospaced)
private boolean isFixedPitch;
public int getUnitsPerEm() {
return unitsPerEm;
}
public int getNumberOfGlyphs() {
return numOfGlyphs;
}
public int[] getGlyphWidths() {
return glyphWidths;
}
/**
* Gets typo (a.k.a. sTypo or OS/2) vertical metric corresponding to ascender.
*
*
* Typo vertical metrics are the primary source for iText ascender/descender calculations.
*
* @return typo ascender value in normalized 1000-units
*/
public int getTypoAscender() {
return typoAscender;
}
/**
* Gets typo (a.k.a. sTypo or OS/2) vertical metric corresponding to descender.
*
*
* Typo vertical metrics are the primary source for iText ascender/descender calculations.
*
* @return typo descender value in normalized 1000-units
*/
public int getTypoDescender() {
return typoDescender;
}
/**
* Gets the capital letters height.
*
*
* This property defines the vertical coordinate of the top of flat capital letters,
* measured from the baseline.
*
* @return cap height in 1000-units
*/
public int getCapHeight() {
return capHeight;
}
public int getXHeight() {
return xHeight;
}
public float getItalicAngle() {
return italicAngle;
}
public int[] getBbox() {
return bbox;
}
public void setBbox(int llx, int lly, int urx, int ury){
bbox[0] = llx;
bbox[1] = lly;
bbox[2] = urx;
bbox[3] = ury;
}
public int getAscender() {
return ascender;
}
public int getDescender() {
return descender;
}
public int getLineGap() {
return lineGap;
}
public int getWinAscender() {
return winAscender;
}
public int getWinDescender() {
return winDescender;
}
public int getAdvanceWidthMax() {
return advanceWidthMax;
}
public int getUnderlinePosition() {
return underlinePosition - underlineThickness / 2;
}
public int getUnderlineThickness() {
return underlineThickness;
}
public int getStrikeoutPosition() {
return strikeoutPosition;
}
public int getStrikeoutSize() {
return strikeoutSize;
}
public int getSubscriptSize() {
return subscriptSize;
}
public int getSubscriptOffset() {
return subscriptOffset;
}
public int getSuperscriptSize() {
return superscriptSize;
}
public int getSuperscriptOffset() {
return superscriptOffset;
}
public int getStemV() {
return stemV;
}
public int getStemH() {
return stemH;
}
public boolean isFixedPitch() {
return isFixedPitch;
}
protected void setUnitsPerEm(int unitsPerEm) {
this.unitsPerEm = unitsPerEm;
normalizationCoef = (float) FontProgram.UNITS_NORMALIZATION / unitsPerEm;
}
protected void updateBbox(float llx, float lly, float urx, float ury) {
bbox[0] = (int) (llx * normalizationCoef);
bbox[1] = (int) (lly * normalizationCoef);
bbox[2] = (int) (urx * normalizationCoef);
bbox[3] = (int) (ury * normalizationCoef);
}
protected void setNumberOfGlyphs(int numOfGlyphs) {
this.numOfGlyphs = numOfGlyphs;
}
protected void setGlyphWidths(int[] glyphWidths) {
this.glyphWidths = glyphWidths;
}
/**
* Sets typo (a.k.a. sTypo or OS/2) vertical metric corresponding to ascender.
*
*
* Typo vertical metrics are the primary source for iText ascender/descender calculations.
*
* @param typoAscender typo ascender value in normalized 1000-units
*/
protected void setTypoAscender(int typoAscender) {
this.typoAscender = (int) (typoAscender * normalizationCoef);
}
/**
* Sets typo (a.k.a. sTypo or OS/2) vertical metric corresponding to descender.
*
*
* Typo vertical metrics are the primary source for iText ascender/descender calculations.
*
* @param typoDescender typo descender value in normalized 1000-units
*/
protected void setTypoDescender(int typoDescender) {
this.typoDescender = (int) (typoDescender * normalizationCoef);
}
/**
* Sets the capital letters height.
*
*
* This property defines the vertical coordinate of the top of flat capital letters,
* measured from the baseline.
*
* @param capHeight cap height in 1000-units
*/
protected void setCapHeight(int capHeight) {
this.capHeight = (int) (capHeight * normalizationCoef);
}
protected void setXHeight(int xHeight) {
this.xHeight = (int) (xHeight * normalizationCoef);
}
protected void setItalicAngle(float italicAngle) {
this.italicAngle = italicAngle;
}
protected void setAscender(int ascender) {
this.ascender = (int) (ascender * normalizationCoef);
}
protected void setDescender(int descender) {
this.descender = (int) (descender * normalizationCoef);
}
protected void setLineGap(int lineGap) {
this.lineGap = (int) (lineGap * normalizationCoef);
}
protected void setWinAscender(int winAscender) {
this.winAscender = (int) (winAscender * normalizationCoef);
}
protected void setWinDescender(int winDescender) {
this.winDescender = (int) (winDescender * normalizationCoef);
}
protected void setAdvanceWidthMax(int advanceWidthMax) {
this.advanceWidthMax = (int) (advanceWidthMax * normalizationCoef);
}
protected void setUnderlinePosition(int underlinePosition) {
this.underlinePosition = (int) (underlinePosition * normalizationCoef);
}
protected void setUnderlineThickness(int underineThickness) {
this.underlineThickness = underineThickness;
}
protected void setStrikeoutPosition(int strikeoutPosition) {
this.strikeoutPosition = (int) (strikeoutPosition * normalizationCoef);
}
protected void setStrikeoutSize(int strikeoutSize) {
this.strikeoutSize = (int) (strikeoutSize * normalizationCoef);
}
protected void setSubscriptSize(int subscriptSize) {
this.subscriptSize = (int) (subscriptSize * normalizationCoef);
}
protected void setSubscriptOffset(int subscriptOffset) {
this.subscriptOffset = (int) (subscriptOffset * normalizationCoef);
}
protected void setSuperscriptSize(int superscriptSize) {
this.superscriptSize = superscriptSize;
}
protected void setSuperscriptOffset(int superscriptOffset) {
this.superscriptOffset = (int) (superscriptOffset * normalizationCoef);
}
//todo change to protected!
public void setStemV(int stemV) {
this.stemV = stemV;
}
protected void setStemH(int stemH) {
this.stemH = stemH;
}
protected void setIsFixedPitch(boolean isFixedPitch) {
this.isFixedPitch = isFixedPitch;
}
}