PFont

processing.core

## Class PFont

- java.lang.Object
- - processing.core.PFont

- All Implemented Interfaces:
    PConstants

      public class PFont
      extends Object
      implements PConstants

  Grayscale bitmap font class used by Processing.

  Awful (and by that, I mean awesome) ASCII (non-)art for how this works:

         |
         |                   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)

  See Also:
    `PApplet.loadFont(String)`, `PGraphics.textFont(PFont)`, `PGraphics.text(char, float, float)`

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `class` | `PFont.Glyph` A single character, and its visage.

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static char[]` | `CHARSET` The default Processing character set.

    - ### Fields inherited from interface processing.core.PConstants

      `ADD, ALPHA, ALT, AMBIENT, ARC, ARGB, ARROW, BACKSPACE, BASELINE, BEVEL, BEZIER_VERTEX, BLEND, BLUR, BOTTOM, BOX, BREAK, BURN, CENTER, CHATTER, CHORD, CLAMP, CLOSE, CODED, COMPLAINT, CONTROL, CORNER, CORNERS, CROSS, CURVE_VERTEX, CUSTOM, DARKEST, DEG_TO_RAD, DELETE, DIAMETER, DIFFERENCE, DILATE, DIRECTIONAL, DISABLE_DEPTH_MASK, DISABLE_DEPTH_SORT, DISABLE_DEPTH_TEST, DISABLE_NATIVE_FONTS, DISABLE_OPENGL_ERRORS, DISABLE_OPTIMIZED_STROKE, DISABLE_RETINA_PIXELS, DISABLE_STROKE_PERSPECTIVE, DISABLE_STROKE_PURE, DISABLE_TEXTURE_MIPMAPS, DODGE, DOWN, DXF, ELLIPSE, ENABLE_DEPTH_MASK, ENABLE_DEPTH_SORT, ENABLE_DEPTH_TEST, ENABLE_NATIVE_FONTS, ENABLE_OPENGL_ERRORS, ENABLE_OPTIMIZED_STROKE, ENABLE_RETINA_PIXELS, ENABLE_STROKE_PERSPECTIVE, ENABLE_STROKE_PURE, ENABLE_TEXTURE_MIPMAPS, ENTER, EPSILON, ERODE, ERROR_BACKGROUND_IMAGE_FORMAT, ERROR_BACKGROUND_IMAGE_SIZE, ERROR_PUSHMATRIX_OVERFLOW, ERROR_PUSHMATRIX_UNDERFLOW, ERROR_TEXTFONT_NULL_PFONT, ESC, EXCLUSION, GIF, GRAY, GROUP, HALF_PI, HAND, HARD_LIGHT, HINT_COUNT, HSB, IMAGE, INVERT, JAVA2D, JPEG, LANDSCAPE, LEFT, LIGHTEST, LINE, LINE_LOOP, LINE_STRIP, LINES, LINUX, MACOSX, MAX_FLOAT, MAX_INT, MIN_FLOAT, MIN_INT, MITER, MODEL, MODELVIEW, MOVE, MULTIPLY, NORMAL, OPAQUE, OPEN, OPENGL, ORTHOGRAPHIC, OTHER, OVERLAY, P2D, P3D, PATH, PDF, PERSPECTIVE, PI, PIE, platformNames, POINT, POINTS, POLYGON, PORTRAIT, POSTERIZE, PROBLEM, PROJECT, PROJECTION, QUAD, QUAD_BEZIER_VERTEX, QUAD_STRIP, QUADRATIC_VERTEX, QUADS, QUARTER_PI, RAD_TO_DEG, RADIUS, RECT, REPEAT, REPLACE, RETURN, RGB, RIGHT, ROUND, SCREEN, SHAPE, SHIFT, SOFT_LIGHT, SPHERE, SPOT, SQUARE, SUBTRACT, TAB, TARGA, TAU, TEXT, THIRD_PI, THRESHOLD, TIFF, TOP, TRIANGLE, TRIANGLE_FAN, TRIANGLE_STRIP, TRIANGLES, TWO_PI, UP, VERTEX, WAIT, WHITESPACE, WINDOWS, X, Y, Z`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `PFont()` for subclasses that need to store metadata about the font
    `PFont(Font font, boolean smooth)` ( begin auto-generated from PFont.xml ) PFont is the font class for Processing.
    `PFont(Font font, boolean smooth, char[] charset)` Create a new image-based font on the fly.
    `PFont(Font font, boolean smooth, char[] charset, boolean stream)` Adds an additional parameter that indicates the font came from a file, not a built-in OS font.
    `PFont(InputStream input)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `float` | `ascent()` Returns the ascent of this font from the baseline.
    `float` | `descent()` Returns how far this font descends from the baseline.
    `static Font` | `findFont(String name)` Starting with Java 1.5, Apple broke the ability to specify most fonts.
    `Object` | `findNative()` Attempt to find the native version of this font.
    `Font` | `getFont()` Deprecated.
    `PFont.Glyph` | `getGlyph(char c)`
    `PFont.Glyph` | `getGlyph(int i)`
    `int` | `getGlyphCount()`
    `String` | `getName()`
    `Object` | `getNative()` Return the native java.awt.Font associated with this PFont (if any).
    `String` | `getPostScriptName()`
    `PShape` | `getShape(char ch)`
    `PShape` | `getShape(char ch, float detail)`
    `int` | `getSize()` Return size of this font.
    `boolean` | `isStream()`
    `float` | `kern(char a, char b)` Currently un-implemented for .vlw fonts, but honored for layout in case subclasses use it.
    `static String[]` | `list()` ( begin auto-generated from PFont_list.xml ) Gets a list of the fonts installed on the system.
    `static void` | `loadFonts()`
    `void` | `save(OutputStream output)` Write this PFont to an OutputStream.
    `void` | `setNative(Object font)` Set the native complement of this font.
    `void` | `setSubsetting()`
    `float` | `width(char c)` Width of this character for a font of size 1.

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Field Detail

    - #### CHARSET

          public static char[] CHARSET

      The default Processing character set.

      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.

      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).

      Not that I expect that to happen.

  - ### Constructor Detail

    - #### PFont

          public PFont()

      for subclasses that need to store metadata about the font

    - #### PFont

          public PFont(Font font,
               boolean smooth)

      ( 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 loadFont() function constructs a new font and textFont() makes a font active. The list() method creates a list of the fonts installed on the computer, which is useful information to use with the createFont() function for dynamically converting fonts into a format to use with Processing. ( end auto-generated )
      Parameters:
        `font` - font the font object to create from
        `smooth` - smooth true to enable smoothing/anti-aliasing

    - #### PFont

          public PFont(Font font,
               boolean smooth,
               char[] charset)

      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.
      Parameters:
        `charset` - array of all unicode chars that should be included

    - #### PFont

          public PFont(Font font,
               boolean smooth,
               char[] charset,
               boolean stream)

      Adds an additional parameter that indicates the font came from a file, not a built-in OS font.

    - #### PFont

          public PFont(InputStream input)
                throws IOException

      Parameters:
        `input` - InputStream
      Throws:
        `IOException`

  - ### Method Detail

    - #### save

          public void save(OutputStream output)
                    throws IOException

      Write this PFont to an OutputStream.

      This is used by the Create Font tool, or whatever anyone else dreams up for messing with fonts themselves.

      It is assumed that the calling class will handle closing the stream when finished.

      Throws:
        `IOException`

    - #### getName

          public String getName()

    - #### getPostScriptName

          public String getPostScriptName()

    - #### setNative

          public void setNative(Object font)

      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.

    - #### getFont

          @Deprecated
          public Font getFont()

      Deprecated.
      Use the getNative() method instead, which allows library interfaces to be written in a cross-platform fashion for desktop, Android, and others.

    - #### getNative

          public Object getNative()

      Return the native java.awt.Font associated with this PFont (if any).

    - #### getSize

          public int getSize()

      Return size of this font.

    - #### isStream

          public boolean isStream()

    - #### setSubsetting

          public void setSubsetting()

    - #### findNative

          public Object findNative()

      Attempt to find the native version of this font. (Public so that it can be used by OpenGL or other renderers.)

    - #### getGlyph

          public PFont.Glyph getGlyph(char c)

    - #### kern

          public float kern(char a,
                   char b)

      Currently un-implemented for .vlw fonts, but honored for layout in case subclasses use it.

    - #### ascent

          public float ascent()

      Returns the ascent of this font from the baseline. The value is based on a font of size 1.

    - #### descent

          public float descent()

      Returns how far this font descends from the baseline. The value is based on a font size of 1.

    - #### width

          public float width(char c)

      Width of this character for a font of size 1.

    - #### getGlyphCount

          public int getGlyphCount()

    - #### getGlyph

          public PFont.Glyph getGlyph(int i)

    - #### getShape

          public PShape getShape(char ch)

    - #### getShape

          public PShape getShape(char ch,
                        float detail)

    - #### list

          public static String[] list()

      ( 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 createFont(), 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 )

    - #### loadFonts

          public static void loadFonts()

    - #### findFont

          public static Font findFont(String name)

      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: Bug 407.