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1125 lines (935 loc) · 33.3 KB
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/* -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Part of the Processing project - http://processing.org
Copyright (c) 2012-19 The Processing Foundation
Copyright (c) 2004-12 Ben Fry & Casey Reas
Copyright (c) 2001-04 Massachusetts Institute of Technology
This library is free software; you can redistribute it and/or
modify it under the terms of version 2.01 of the GNU Lesser General
Public License as published by the Free Software Foundation.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
package processing.core;
import java.awt.*;
import java.awt.font.FontRenderContext;
import java.awt.font.GlyphVector;
import java.awt.geom.PathIterator;
import java.awt.image.*;
import java.io.*;
import java.util.Arrays;
import java.util.HashMap;
/**
* Grayscale bitmap font class used by Processing.
* <P>
* Awful (and by that, I mean awesome) ASCII (non-)art for how this works:
* <PRE>
* |
* | height is the full used height of the image
* |
* | ..XX.. }
* | ..XX.. }
* | ...... }
* | XXXX.. } topExtent (top y is baseline - topExtent)
* | ..XX.. }
* | ..XX.. } dotted areas are where the image data
* | ..XX.. } is actually located for the character
* +---XXXXXX---- } (it extends to the right and down
* | for power of two texture sizes)
* ^^^^ leftExtent (amount to move over before drawing the image
*
* ^^^^^^^^^^^^^^ setWidth (width displaced by char)
* </PRE>
* @webref typography
* @see PApplet#loadFont(String)
* @see PApplet#createFont(String, float, boolean, char[])
* @see PGraphics#textFont(PFont)
*/
public class PFont implements PConstants {
/** Number of character glyphs in this font. */
protected int glyphCount;
/**
* Actual glyph data. The length of this array won't necessarily be the
* same size as glyphCount, in cases where lazy font loading is in use.
*/
protected Glyph[] glyphs;
/**
* Name of the font as seen by Java when it was created.
* If the font is available, the native version will be used.
*/
protected String name;
/**
* Postscript name of the font that this bitmap was created from.
*/
protected String psname;
/**
* The original size of the font when it was first created
*/
protected int size;
/** Default density set to 1 for backwards compatibility with loadFont(). */
protected int density = 1;
/** true if smoothing was enabled for this font, used for native impl */
protected boolean smooth;
/**
* The ascent of the font. If the 'd' character is present in this PFont,
* this value is replaced with its pixel height, because the values returned
* by FontMetrics.getAscent() seem to be terrible.
*/
protected int ascent;
/**
* The descent of the font. If the 'p' character is present in this PFont,
* this value is replaced with its lowest pixel height, because the values
* returned by FontMetrics.getDescent() are gross.
*/
protected int descent;
/**
* A more efficient array lookup for straight ASCII characters. For Unicode
* characters, a QuickSort-style search is used.
*/
protected int[] ascii;
/**
* True if this font is set to load dynamically. This is the default when
* createFont() method is called without a character set. Bitmap versions of
* characters are only created when prompted by an index() call.
*/
protected boolean lazy;
/**
* Native Java version of the font. If possible, this allows the
* PGraphics subclass to just use Java's font rendering stuff
* in situations where that's faster.
*/
protected Font font;
/**
* True if this font was loaded from an InputStream, rather than by name
* from the OS. It's best to use the native version of a font loaded from
* a TTF file, since that will ensure that the font is available when the
* sketch is exported.
*/
protected boolean stream;
/**
* True if this font should return 'null' for getFont(), so that the native
* font will be used to create a subset, but the native version of the font
* will not be used.
*/
protected boolean subsetting;
/** True if already tried to find the native AWT version of this font. */
protected boolean fontSearched;
/**
* The name of the font that Java uses when a font isn't found.
* See {@link #findFont(String)} and {@link #loadFonts()} for more info.
*/
static protected String systemFontName;
/**
* Array of the native system fonts. Used to lookup native fonts by their
* PostScript name. This is a workaround for a several year old Apple Java
* bug that they can't be bothered to fix.
*/
static protected Font[] fonts;
static protected HashMap<String, Font> fontDifferent;
protected BufferedImage lazyImage;
protected Graphics2D lazyGraphics;
protected FontMetrics lazyMetrics;
protected int[] lazySamples;
/**
* @nowebref
*/
public PFont() { } // for subclasses
/**
* ( begin auto-generated from PFont.xml )
*
* PFont is the font class for Processing. To create a font to use with
* Processing, select "Create Font..." from the Tools menu. This will
* create a font in the format Processing requires and also adds it to the
* current sketch's data directory. Processing displays fonts using the
* .vlw font format, which uses images for each letter, rather than
* defining them through vector data. The <b>loadFont()</b> function
* constructs a new font and <b>textFont()</b> makes a font active. The
* <b>list()</b> method creates a list of the fonts installed on the
* computer, which is useful information to use with the
* <b>createFont()</b> function for dynamically converting fonts into a
* format to use with Processing.
*
* ( end auto-generated )
*
* @nowebref
* @param font font the font object to create from
* @param smooth smooth true to enable smoothing/anti-aliasing
*/
public PFont(Font font, boolean smooth) {
this(font, smooth, null);
}
/**
* Create a new image-based font on the fly. If charset is set to null,
* the characters will only be created as bitmaps when they're drawn.
*
* @nowebref
* @param charset array of all unicode chars that should be included
*/
public PFont(Font font, boolean smooth, char[] charset) {
// save this so that we can use the native version
this.font = font;
this.smooth = smooth;
name = font.getName();
psname = font.getPSName();
size = font.getSize();
// no, i'm not interested in getting off the couch
//lazy = true;
// not sure what else to do here
//mbox2 = 0;
int initialCount = 10;
glyphs = new Glyph[initialCount];
ascii = new int[128];
Arrays.fill(ascii, -1);
int mbox3 = size * 3;
lazyImage = new BufferedImage(mbox3, mbox3, BufferedImage.TYPE_INT_RGB);
lazyGraphics = (Graphics2D) lazyImage.getGraphics();
lazyGraphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
smooth ?
RenderingHints.VALUE_ANTIALIAS_ON :
RenderingHints.VALUE_ANTIALIAS_OFF);
// adding this for post-1.0.9
lazyGraphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING,
smooth ?
RenderingHints.VALUE_TEXT_ANTIALIAS_ON :
RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
lazyGraphics.setFont(font);
lazyMetrics = lazyGraphics.getFontMetrics();
lazySamples = new int[mbox3 * mbox3];
// These values are terrible/unusable. Verified again for Processing 1.1.
// They vary widely per-platform and per-font, so instead we'll use the
// calculate-by-hand method of measuring pixels in characters.
//ascent = lazyMetrics.getAscent();
//descent = lazyMetrics.getDescent();
if (charset == null) {
lazy = true;
// lazyFont = font;
} else {
// charset needs to be sorted to make index lookup run more quickly
// http://dev.processing.org/bugs/show_bug.cgi?id=494
Arrays.sort(charset);
glyphs = new Glyph[charset.length];
glyphCount = 0;
for (char c : charset) {
if (font.canDisplay(c)) {
Glyph glyf = new Glyph(c);
if (glyf.value < 128) {
ascii[glyf.value] = glyphCount;
}
glyf.index = glyphCount;
glyphs[glyphCount++] = glyf;
}
}
// shorten the array if necessary
if (glyphCount != charset.length) {
glyphs = (Glyph[]) PApplet.subset(glyphs, 0, glyphCount);
}
// foreign font, so just make ascent the max topExtent
// for > 1.0.9, not doing this anymore.
// instead using getAscent() and getDescent() values for these cases.
// if ((ascent == 0) && (descent == 0)) {
// //for (int i = 0; i < charCount; i++) {
// for (Glyph glyph : glyphs) {
// char cc = (char) glyph.value;
// //char cc = (char) glyphs[i].value;
// if (Character.isWhitespace(cc) ||
// (cc == '\u00A0') || (cc == '\u2007') || (cc == '\u202F')) {
// continue;
// }
// if (glyph.topExtent > ascent) {
// ascent = glyph.topExtent;
// }
// int d = -glyph.topExtent + glyph.height;
// if (d > descent) {
// descent = d;
// }
// }
// }
}
// If not already created, just create these two characters to calculate
// the ascent and descent values for the font. This was tested to only
// require 5-10 ms on a 2.4 GHz MacBook Pro.
// In versions 1.0.9 and earlier, fonts that could not display d or p
// used the max up/down values as calculated by looking through the font.
// That's no longer valid with the auto-generating fonts, so we'll just
// use getAscent() and getDescent() in such (minor) cases.
if (ascent == 0) {
if (font.canDisplay('d')) {
new Glyph('d');
} else {
ascent = lazyMetrics.getAscent();
}
}
if (descent == 0) {
if (font.canDisplay('p')) {
new Glyph('p');
} else {
descent = lazyMetrics.getDescent();
}
}
}
/**
* Adds an additional parameter that indicates the font came from a file,
* not a built-in OS font.
*
* @nowebref
*/
public PFont(Font font, boolean smooth, char[] charset,
boolean stream, int density) {
this(font, smooth, charset);
this.stream = stream;
this.density = density;
}
/**
* @nowebref
* @param input InputStream
*/
public PFont(InputStream input) throws IOException {
DataInputStream is = new DataInputStream(input);
// number of character images stored in this font
glyphCount = is.readInt();
// used to be the bitCount, but now used for version number.
// version 8 is any font before 69, so 9 is anything from 83+
// 9 was buggy so gonna increment to 10.
int version = is.readInt();
// this was formerly ignored, now it's the actual font size
//mbox = is.readInt();
size = is.readInt();
// this was formerly mboxY, the one that was used
// this will make new fonts downward compatible
is.readInt(); // ignore the other mbox attribute
ascent = is.readInt(); // formerly baseHt (zero/ignored)
descent = is.readInt(); // formerly ignored struct padding
// allocate enough space for the character info
glyphs = new Glyph[glyphCount];
ascii = new int[128];
Arrays.fill(ascii, -1);
// read the information about the individual characters
for (int i = 0; i < glyphCount; i++) {
Glyph glyph = new Glyph(is);
// cache locations of the ascii charset
if (glyph.value < 128) {
ascii[glyph.value] = i;
}
glyph.index = i;
glyphs[i] = glyph;
}
// not a roman font, so throw an error and ask to re-build.
// that way can avoid a bunch of error checking hacks in here.
if ((ascent == 0) && (descent == 0)) {
throw new RuntimeException("Please use \"Create Font\" to " +
"re-create this font.");
}
for (Glyph glyph : glyphs) {
glyph.readBitmap(is);
}
if (version >= 10) { // includes the font name at the end of the file
name = is.readUTF();
psname = is.readUTF();
}
if (version == 11) {
smooth = is.readBoolean();
}
// See if there's a native version of this font that can be used,
// in case that's of interest later.
// findNative();
}
/**
* Write this PFont to an OutputStream.
* <p>
* This is used by the Create Font tool, or whatever anyone else dreams
* up for messing with fonts themselves.
* <p>
* It is assumed that the calling class will handle closing
* the stream when finished.
*/
public void save(OutputStream output) throws IOException {
DataOutputStream os = new DataOutputStream(output);
os.writeInt(glyphCount);
if ((name == null) || (psname == null)) {
name = "";
psname = "";
}
os.writeInt(11); // formerly numBits, now used for version number
os.writeInt(size); // formerly mboxX (was 64, now 48)
os.writeInt(0); // formerly mboxY, now ignored
os.writeInt(ascent); // formerly baseHt (was ignored)
os.writeInt(descent); // formerly struct padding for c version
for (int i = 0; i < glyphCount; i++) {
glyphs[i].writeHeader(os);
}
for (int i = 0; i < glyphCount; i++) {
glyphs[i].writeBitmap(os);
}
// version 11
os.writeUTF(name);
os.writeUTF(psname);
os.writeBoolean(smooth);
os.flush();
}
/**
* Create a new glyph, and add the character to the current font.
* @param c character to create an image for.
*/
protected void addGlyph(char c) {
Glyph glyph = new Glyph(c);
if (glyphCount == glyphs.length) {
glyphs = (Glyph[]) PApplet.expand(glyphs);
}
if (glyphCount == 0) {
glyph.index = 0;
glyphs[glyphCount] = glyph;
if (glyph.value < 128) {
ascii[glyph.value] = 0;
}
} else if (glyphs[glyphCount-1].value < glyph.value) {
glyphs[glyphCount] = glyph;
if (glyph.value < 128) {
ascii[glyph.value] = glyphCount;
}
} else {
for (int i = 0; i < glyphCount; i++) {
if (glyphs[i].value > c) {
for (int j = glyphCount; j > i; --j) {
glyphs[j] = glyphs[j-1];
if (glyphs[j].value < 128) {
ascii[glyphs[j].value] = j;
}
}
glyph.index = i;
glyphs[i] = glyph;
// cache locations of the ascii charset
if (c < 128) ascii[c] = i;
break;
}
}
}
glyphCount++;
}
public String getName() {
return name;
}
public String getPostScriptName() {
return psname;
}
/**
* Set the native complement of this font. Might be set internally via the
* findFont() function, or externally by a deriveFont() call if the font
* is resized by PGraphicsJava2D.
*/
public void setNative(Object font) {
this.font = (Font) font;
}
/**
* Use the getNative() method instead, which allows library interfaces to be
* written in a cross-platform fashion for desktop, Android, and others.
*/
@Deprecated
public Font getFont() {
return font;
}
/**
* Return the native java.awt.Font associated with this PFont (if any).
*/
public Object getNative() {
if (subsetting) {
return null; // don't return the font for use
}
return font;
}
/**
* Return size of this font.
*/
public int getSize() {
return size;
}
// public void setDefaultSize(int size) {
// defaultSize = size;
// }
/**
* Returns the size that will be used when textFont(font) is called.
* When drawing with 2x pixel density, bitmap fonts in OpenGL need to be
* created (behind the scenes) at double the requested size. This ensures
* that they're shown at half on displays (so folks don't have to change
* their sketch code).
*/
public int getDefaultSize() {
//return defaultSize;
return size / density;
}
public boolean isSmooth() {
return smooth;
}
public boolean isStream() {
return stream;
}
public void setSubsetting() {
subsetting = true;
}
/**
* Attempt to find the native version of this font.
* (Public so that it can be used by OpenGL or other renderers.)
*/
public Object findNative() {
if (font == null) {
if (!fontSearched) {
// this font may or may not be installed
font = new Font(name, Font.PLAIN, size);
// if the ps name matches, then we're in fine shape
if (!font.getPSName().equals(psname)) {
// on osx java 1.4 (not 1.3.. ugh), you can specify the ps name
// of the font, so try that in case this .vlw font was created on pc
// and the name is different, but the ps name is found on the
// java 1.4 mac that's currently running this sketch.
font = new Font(psname, Font.PLAIN, size);
}
// check again, and if still bad, screw em
if (!font.getPSName().equals(psname)) {
font = null;
}
fontSearched = true;
}
}
return font;
}
public Glyph getGlyph(char c) {
int index = index(c);
return (index == -1) ? null : glyphs[index];
}
/**
* Get index for the character.
* @return index into arrays or -1 if not found
*/
protected int index(char c) {
if (lazy) {
int index = indexActual(c);
if (index != -1) {
return index;
}
if (font != null && font.canDisplay(c)) {
// create the glyph
addGlyph(c);
// now where did i put that?
return indexActual(c);
} else {
return -1;
}
} else {
return indexActual(c);
}
}
protected int indexActual(char c) {
// degenerate case, but the find function will have trouble
// if there are somehow zero chars in the lookup
//if (value.length == 0) return -1;
if (glyphCount == 0) return -1;
// quicker lookup for the ascii fellers
if (c < 128) return ascii[c];
// some other unicode char, hunt it out
//return index_hunt(c, 0, value.length-1);
return indexHunt(c, 0, glyphCount-1);
}
protected int indexHunt(int c, int start, int stop) {
int pivot = (start + stop) / 2;
// if this is the char, then return it
if (c == glyphs[pivot].value) return pivot;
// char doesn't exist, otherwise would have been the pivot
//if (start == stop) return -1;
if (start >= stop) return -1;
// if it's in the lower half, continue searching that
if (c < glyphs[pivot].value) return indexHunt(c, start, pivot-1);
// if it's in the upper half, continue there
return indexHunt(c, pivot+1, stop);
}
/**
* Currently un-implemented for .vlw fonts,
* but honored for layout in case subclasses use it.
*/
public float kern(char a, char b) {
return 0;
}
/**
* Returns the ascent of this font from the baseline.
* The value is based on a font of size 1.
*/
public float ascent() {
return ((float) ascent / (float) size);
}
/**
* Returns how far this font descends from the baseline.
* The value is based on a font size of 1.
*/
public float descent() {
return ((float) descent / (float) size);
}
/**
* Width of this character for a font of size 1.
*/
public float width(char c) {
if (c == 32) return width('i');
int cc = index(c);
if (cc == -1) return 0;
return ((float) glyphs[cc].setWidth / (float) size);
}
//////////////////////////////////////////////////////////////
public int getGlyphCount() {
return glyphCount;
}
public Glyph getGlyph(int i) {
return glyphs[i];
}
public PShape getShape(char ch) {
return getShape(ch, 0);
}
public PShape getShape(char ch, float detail) {
Font font = (Font) getNative();
if (font == null) {
throw new IllegalArgumentException("getShape() only works on fonts loaded with createFont()");
}
PShape s = new PShape(PShape.PATH);
// six element array received from the Java2D path iterator
float[] iterPoints = new float[6];
// array passed to createGylphVector
char[] textArray = new char[] { ch };
//Graphics2D graphics = (Graphics2D) this.getGraphics();
//FontRenderContext frc = graphics.getFontRenderContext();
@SuppressWarnings("deprecation")
FontRenderContext frc =
Toolkit.getDefaultToolkit().getFontMetrics(font).getFontRenderContext();
GlyphVector gv = font.createGlyphVector(frc, textArray);
Shape shp = gv.getOutline();
// make everything into moveto and lineto
PathIterator iter = (detail == 0) ?
shp.getPathIterator(null) : // maintain curves
shp.getPathIterator(null, detail); // convert to line segments
int contours = 0;
//boolean outer = true;
// boolean contour = false;
while (!iter.isDone()) {
int type = iter.currentSegment(iterPoints);
switch (type) {
case PathIterator.SEG_MOVETO: // 1 point (2 vars) in textPoints
// System.out.println("moveto");
// if (!contour) {
if (contours == 0) {
s.beginShape();
} else {
s.beginContour();
// contour = true;
}
contours++;
s.vertex(iterPoints[0], iterPoints[1]);
break;
case PathIterator.SEG_LINETO: // 1 point
// System.out.println("lineto");
// PApplet.println(PApplet.subset(iterPoints, 0, 2));
s.vertex(iterPoints[0], iterPoints[1]);
break;
case PathIterator.SEG_QUADTO: // 2 points
// System.out.println("quadto");
// PApplet.println(PApplet.subset(iterPoints, 0, 4));
s.quadraticVertex(iterPoints[0], iterPoints[1],
iterPoints[2], iterPoints[3]);
break;
case PathIterator.SEG_CUBICTO: // 3 points
// System.out.println("cubicto");
// PApplet.println(iterPoints);
s.bezierVertex(iterPoints[0], iterPoints[1],
iterPoints[2], iterPoints[3],
iterPoints[4], iterPoints[5]);
break;
case PathIterator.SEG_CLOSE:
// System.out.println("close");
if (contours > 1) {
// contours--;
// if (contours == 0) {
//// s.endShape();
// } else {
s.endContour();
}
break;
}
// PApplet.println(iterPoints);
iter.next();
}
s.endShape(CLOSE);
return s;
}
//////////////////////////////////////////////////////////////
static final char[] EXTRA_CHARS = {
0x0080, 0x0081, 0x0082, 0x0083, 0x0084, 0x0085, 0x0086, 0x0087,
0x0088, 0x0089, 0x008A, 0x008B, 0x008C, 0x008D, 0x008E, 0x008F,
0x0090, 0x0091, 0x0092, 0x0093, 0x0094, 0x0095, 0x0096, 0x0097,
0x0098, 0x0099, 0x009A, 0x009B, 0x009C, 0x009D, 0x009E, 0x009F,
0x00A0, 0x00A1, 0x00A2, 0x00A3, 0x00A4, 0x00A5, 0x00A6, 0x00A7,
0x00A8, 0x00A9, 0x00AA, 0x00AB, 0x00AC, 0x00AD, 0x00AE, 0x00AF,
0x00B0, 0x00B1, 0x00B4, 0x00B5, 0x00B6, 0x00B7, 0x00B8, 0x00BA,
0x00BB, 0x00BF, 0x00C0, 0x00C1, 0x00C2, 0x00C3, 0x00C4, 0x00C5,
0x00C6, 0x00C7, 0x00C8, 0x00C9, 0x00CA, 0x00CB, 0x00CC, 0x00CD,
0x00CE, 0x00CF, 0x00D1, 0x00D2, 0x00D3, 0x00D4, 0x00D5, 0x00D6,
0x00D7, 0x00D8, 0x00D9, 0x00DA, 0x00DB, 0x00DC, 0x00DD, 0x00DF,
0x00E0, 0x00E1, 0x00E2, 0x00E3, 0x00E4, 0x00E5, 0x00E6, 0x00E7,
0x00E8, 0x00E9, 0x00EA, 0x00EB, 0x00EC, 0x00ED, 0x00EE, 0x00EF,
0x00F1, 0x00F2, 0x00F3, 0x00F4, 0x00F5, 0x00F6, 0x00F7, 0x00F8,
0x00F9, 0x00FA, 0x00FB, 0x00FC, 0x00FD, 0x00FF, 0x0102, 0x0103,
0x0104, 0x0105, 0x0106, 0x0107, 0x010C, 0x010D, 0x010E, 0x010F,
0x0110, 0x0111, 0x0118, 0x0119, 0x011A, 0x011B, 0x0131, 0x0139,
0x013A, 0x013D, 0x013E, 0x0141, 0x0142, 0x0143, 0x0144, 0x0147,
0x0148, 0x0150, 0x0151, 0x0152, 0x0153, 0x0154, 0x0155, 0x0158,
0x0159, 0x015A, 0x015B, 0x015E, 0x015F, 0x0160, 0x0161, 0x0162,
0x0163, 0x0164, 0x0165, 0x016E, 0x016F, 0x0170, 0x0171, 0x0178,
0x0179, 0x017A, 0x017B, 0x017C, 0x017D, 0x017E, 0x0192, 0x02C6,
0x02C7, 0x02D8, 0x02D9, 0x02DA, 0x02DB, 0x02DC, 0x02DD, 0x03A9,
0x03C0, 0x2013, 0x2014, 0x2018, 0x2019, 0x201A, 0x201C, 0x201D,
0x201E, 0x2020, 0x2021, 0x2022, 0x2026, 0x2030, 0x2039, 0x203A,
0x2044, 0x20AC, 0x2122, 0x2202, 0x2206, 0x220F, 0x2211, 0x221A,
0x221E, 0x222B, 0x2248, 0x2260, 0x2264, 0x2265, 0x25CA, 0xF8FF,
0xFB01, 0xFB02
};
/**
* The default Processing character set.
* <P>
* This is the union of the Mac Roman and Windows ANSI (CP1250)
* character sets. ISO 8859-1 Latin 1 is Unicode characters 0x80 -> 0xFF,
* and would seem a good standard, but in practice, most P5 users would
* rather have characters that they expect from their platform's fonts.
* <P>
* This is more of an interim solution until a much better
* font solution can be determined. (i.e. create fonts on
* the fly from some sort of vector format).
* <P>
* Not that I expect that to happen.
*/
static public char[] CHARSET;
static {
CHARSET = new char[126-33+1 + EXTRA_CHARS.length];
int index = 0;
for (int i = 33; i <= 126; i++) {
CHARSET[index++] = (char)i;
}
for (int i = 0; i < EXTRA_CHARS.length; i++) {
CHARSET[index++] = EXTRA_CHARS[i];
}
}
/**
* ( begin auto-generated from PFont_list.xml )
*
* Gets a list of the fonts installed on the system. The data is returned
* as a String array. This list provides the names of each font for input
* into <b>createFont()</b>, which allows Processing to dynamically format
* fonts. This function is meant as a tool for programming local
* applications and is not recommended for use in applets.
*
* ( end auto-generated )
*
* @webref pfont
* @usage application
* @brief Gets a list of the fonts installed on the system
*/
static public String[] list() {
loadFonts();
String[] list = new String[fonts.length];
for (int i = 0; i < list.length; i++) {
list[i] = fonts[i].getName();
}
return list;
}
/**
* Make an internal list of all installed fonts.
*
* This can take a while with a lot of fonts installed, but running it on
* a separate thread may not help much. As of the commit that's adding this
* note, loadFonts() will only be called by PFont.list() and when loading a
* font by name, both of which are occasions when we'd need to block until
* this was finished anyway. It's also possible that running getAllFonts()
* on a non-EDT thread could cause graphics system issues. Further, the first
* fonts are usually loaded at the beginning of a sketch, meaning that sketch
* startup time will still be affected, even with threading in place.
*
* Where we're getting killed on font performance is due to this bug:
* https://bugs.openjdk.java.net/browse/JDK-8179209
*/
static public void loadFonts() {
if (fonts == null) {
GraphicsEnvironment ge =
GraphicsEnvironment.getLocalGraphicsEnvironment();
fonts = ge.getAllFonts();
if (PApplet.platform == PConstants.MACOSX) {
fontDifferent = new HashMap<>();
for (Font font : fonts) {
// No need to use getPSName() anymore because getName()
// returns the PostScript name on OS X 10.6 w/ Java 6.
fontDifferent.put(font.getName(), font);
}
}
}
}
/**
* Starting with Java 1.5, Apple broke the ability to specify most fonts.
* This bug was filed years ago as #4769141 at bugreporter.apple.com. More:
* <a href="http://dev.processing.org/bugs/show_bug.cgi?id=407">Bug 407</a>.
* <br>
* This function displays a warning when the font is not found
* and Java's system font is used.
* See: <a href="https://github.com/processing/processing/issues/5481">issue #5481</a>
*/
static public Font findFont(String name) {
if (PApplet.platform == PConstants.MACOSX) {
loadFonts();
Font maybe = fontDifferent.get(name);
if (maybe != null) {
return maybe;
}
}
Font font = new Font(name, Font.PLAIN, 1);
// make sure we have the name of the system fallback font
if (systemFontName == null) {
// Figure out what the font is named when things fail
systemFontName = new Font("", Font.PLAIN, 1).getFontName();
}
// warn the user if they didn't get the font they want
if (!name.equals(systemFontName) &&
font.getFontName().equals(systemFontName)) {
PGraphics.showWarning("\"" + name + "\" is not available, " +
"so another font will be used. " +
"Use PFont.list() to show available fonts.");
}
return font;
}
//////////////////////////////////////////////////////////////
/**
* A single character, and its visage.
*/
public class Glyph {
public PImage image;
public int value;
public int height;
public int width;
public int index;
public int setWidth;
public int topExtent;
public int leftExtent;
public Glyph() {
index = -1;
// used when reading from a stream or for subclasses
}
public Glyph(DataInputStream is) throws IOException {
index = -1;
readHeader(is);
}
protected void readHeader(DataInputStream is) throws IOException {
value = is.readInt();
height = is.readInt();
width = is.readInt();
setWidth = is.readInt();
topExtent = is.readInt();
leftExtent = is.readInt();
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