A B C D E F G H I J L M N O P R S T U W

A

addChar(int, byte[], int, int) - Method in class net.freeutils.scrollphat.LEDFont

Adds a character to this font.

ADDR_GND - Static variable in class net.freeutils.scrollphat.Device

ADDR_SCL - Static variable in class net.freeutils.scrollphat.Device

ADDR_SDA - Static variable in class net.freeutils.scrollphat.Device

ADDR_VCC - Static variable in class net.freeutils.scrollphat.Device

Animation - Class in net.freeutils.scrollphat

Provides common animation utilities.

Animation() - Constructor for class net.freeutils.scrollphat.Animation

append(StringBuilder, byte) - Static method in class net.freeutils.scrollphat.Utils

Appends the hex string representing the given byte value to a StringBuffer.

append(StringBuilder, byte[], int, int) - Static method in class net.freeutils.scrollphat.Utils

Appends the hex string representing the given byte values to a StringBuffer.

B

buf - Variable in class net.freeutils.scrollphat.JNADevDevice

bus - Variable in class net.freeutils.scrollphat.Pi4JDevice

C

Canvas - Class in net.freeutils.scrollphat

A convenience class for manipulating a LED matrix buffer and preparing the display content.

Canvas(byte[], int) - Constructor for class net.freeutils.scrollphat.Canvas

Constructs a Canvas which wraps the given matrix.

Canvas(int, int) - Constructor for class net.freeutils.scrollphat.Canvas

Constructs a Canvas with a new matrix of the given width and height.

close() - Method in class net.freeutils.scrollphat.Device

Closes the I2C bus and device.

closeImpl() - Method in class net.freeutils.scrollphat.Device

Closes the I2C bus and device.

closeImpl() - Method in class net.freeutils.scrollphat.JNADevDevice

closeImpl() - Method in class net.freeutils.scrollphat.MockDevice

closeImpl() - Method in class net.freeutils.scrollphat.Pi4JDevice

closeOnShutdown(boolean) - Method in class net.freeutils.scrollphat.Device

Specifies whether to set a system shutdown hook to close this device when the JVM exits.

CONFIG_AUDIO_INPUT - Static variable in class net.freeutils.scrollphat.Device

CONFIG_DISPLAY_MATRIX_1 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_DISPLAY_MATRIX_1_AND_2 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_DISPLAY_MATRIX_2 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_MATRIX_5X11 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_MATRIX_6X10 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_MATRIX_7X9 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_MATRIX_8X8 - Static variable in class net.freeutils.scrollphat.Device

CONFIG_SOFTWARE_SHUTDOWN - Static variable in class net.freeutils.scrollphat.Device

configure(int) - Method in class net.freeutils.scrollphat.Device

Configures the device.

convert(Font, int, int) - Static method in class net.freeutils.scrollphat.FontConverter

Converts the given font to ledfont format written to a LEDFont.

convert(Font, int, int, File) - Static method in class net.freeutils.scrollphat.FontConverter

Converts the given font to ledfont format written to a file.

convertFromPython(File, int, File) - Static method in class net.freeutils.scrollphat.FontConverter

Converts a python script defining a font data structure to a LEDFont.

crop(byte[], int, int, int, int, byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Crops the given pixel matrix.

cropX(byte[], int, int, byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Crops the given pixel matrix horizontally.

cropY(byte[], int, int, byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Crops the given pixel matrix vertically.

D

data - Variable in class net.freeutils.scrollphat.LEDFont

Device - Class in net.freeutils.scrollphat

Provides access to the raw functionality of ISSI's IS31FL3730 matrix LED driver chip.

Device() - Constructor for class net.freeutils.scrollphat.Device

device - Variable in class net.freeutils.scrollphat.Pi4JDevice

displayTestPatterns() - Method in class net.freeutils.scrollphat.Device

Displays test patterns.

E

empty(byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Empties a byte array by filling it with zeros.

empty() - Method in class net.freeutils.scrollphat.Canvas

Empty the matrix (fill it with empty columns).

errors - Variable in class net.freeutils.scrollphat.Device

F

fill(byte[], int) - Static method in class net.freeutils.scrollphat.Canvas

Fills a byte array with a single value.

fill(byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Fills a byte array with 0xFF bytes (i.e.

fill(int) - Method in class net.freeutils.scrollphat.Canvas

Fills the matrix with the given column value.

flip(byte) - Static method in class net.freeutils.scrollphat.Canvas

Flips the order of bits in a byte.

flip(byte, int) - Static method in class net.freeutils.scrollphat.Canvas

Flips the order of the least-significant bits in a byte.

flip(byte[], int, byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Flips the order of the least-significant bits in an array of bytes.

FontConverter - Class in net.freeutils.scrollphat

Converts a standard TrueType (TTF) font, rendered at a given size, to the ledfont format used at runtime by the LEDFont class.

FontConverter() - Constructor for class net.freeutils.scrollphat.FontConverter

G

getHeight() - Method in class net.freeutils.scrollphat.Canvas

Returns the canvas height in pixels.

getHeight() - Method in class net.freeutils.scrollphat.Device

Returns the configured device height.

getHeight() - Method in class net.freeutils.scrollphat.LEDFont

Returns the font height in pixels.

getInputStream(String) - Static method in class net.freeutils.scrollphat.Utils

Returns an input stream for reading the content of a file or resource.

getMatrix() - Method in class net.freeutils.scrollphat.Canvas

Returns the wrapped matrix bytes.

getMaxWidth(char[]) - Method in class net.freeutils.scrollphat.LEDFont

Returns the maximum glyph width among all of the given characters.

getNativeFileDescriptor(FileDescriptor) - Method in class net.freeutils.scrollphat.JNADevDevice

Returns the native file descriptor associated with the Java file descriptor.

getSupportedChars() - Method in class net.freeutils.scrollphat.LEDFont

Returns the sorted set of Unicode code points supported by this font.

getSupportedCharsAsString() - Method in class net.freeutils.scrollphat.LEDFont

Returns a string of Unicode code points supported by this font.

getWidth() - Method in class net.freeutils.scrollphat.Canvas

Returns the canvas width in pixels.

getWidth() - Method in class net.freeutils.scrollphat.Device

Returns the configured device width.

getWidth(int) - Method in class net.freeutils.scrollphat.LEDFont

Returns the width in pixels of the given code point.

getWidth(char[], int, int) - Method in class net.freeutils.scrollphat.LEDFont

Returns the width in pixels of the given characters.

getWidth(String) - Method in class net.freeutils.scrollphat.LEDFont

Returns the width in pixels of the given string.

gradualBrightness(Device, int, int, int) - Static method in class net.freeutils.scrollphat.Animation

Gradually changes the display brightness.

graph(byte[], int, int, float[], Float, Float, boolean) - Static method in class net.freeutils.scrollphat.Canvas

Draws a graph with the given width and height in pixels from the given data values and boundaries.

graph(byte[], int, int, int[], Float, Float, boolean) - Static method in class net.freeutils.scrollphat.Canvas

Draws a graph with the given width and height in pixels from the given data values and boundaries.

graph(int[], Float, Float, boolean) - Method in class net.freeutils.scrollphat.Canvas

Draws a graph with the given width and height in pixels from the given data values and boundaries.

H

handleError(IOException) - Method in class net.freeutils.scrollphat.Device

Handles errors that occur while writing data to the device.

height - Variable in class net.freeutils.scrollphat.Device

height - Variable in class net.freeutils.scrollphat.LEDFont

I

init() - Method in class net.freeutils.scrollphat.Device

Initializes the device.

ioctl(int, int, int) - Method in class net.freeutils.scrollphat.JNADevDevice

Invokes the native ioctl function.

J

JNADevDevice - Class in net.freeutils.scrollphat

A device implementation that uses the /dev/i2c-* device interface for the I2C communications with the device, and JNA for ioctl calls.

JNADevDevice() - Constructor for class net.freeutils.scrollphat.JNADevDevice

L

LEDFont - Class in net.freeutils.scrollphat

Loads a font in ledfont format and renders text using the font.

LEDFont(int) - Constructor for class net.freeutils.scrollphat.LEDFont

Constructs an empty LEDFont.

LEDFont(String) - Constructor for class net.freeutils.scrollphat.LEDFont

Constructs a LEDFont from a file or resource in ledfont format.

LEDFont(InputStream) - Constructor for class net.freeutils.scrollphat.LEDFont

Constructs a LEDFont from a stream containing data in ledfont format.

LEDFont(byte[]) - Constructor for class net.freeutils.scrollphat.LEDFont

Constructs a LEDFont from a byte array containing data in ledfont format.

loadTTF(String) - Static method in class net.freeutils.scrollphat.FontConverter

Loads a TrueType (TTF) font from file or resource as an AWT Font.

lookup - Variable in class net.freeutils.scrollphat.LEDFont

M

MAGIC - Static variable in class net.freeutils.scrollphat.LEDFont

main(String[]) - Static method in class net.freeutils.scrollphat.Device

The main command-line utility entry point.

main(String[]) - Static method in class net.freeutils.scrollphat.FontConverter

The main command-line utility entry point.

main(String[]) - Static method in class net.freeutils.scrollphat.LEDFont

The main command-line utility entry point.

main(String[]) - Static method in class net.freeutils.scrollphat.MockDevice

The main command-line utility entry point.

MockDevice - Class in net.freeutils.scrollphat

A Device implementation that writes to the console instead of to a real device.

MockDevice() - Constructor for class net.freeutils.scrollphat.MockDevice

N

net.freeutils.scrollphat - package net.freeutils.scrollphat

newInstance() - Static method in class net.freeutils.scrollphat.Device

Returns a new Device instance.

newInstance(String) - Static method in class net.freeutils.scrollphat.Device

Returns a new Device instance using the given implementation.

O

open(int) - Method in class net.freeutils.scrollphat.Device

Opens the connection to I2C bus number 1 and to the device at the given address.

open(int, int) - Method in class net.freeutils.scrollphat.Device

Opens the connection to the I2C bus and to the device at the given address.

openImpl(int, int) - Method in class net.freeutils.scrollphat.Device

Opens the connection to the I2C bus and to the device at the given address.

openImpl(int, int) - Method in class net.freeutils.scrollphat.JNADevDevice

openImpl(int, int) - Method in class net.freeutils.scrollphat.MockDevice

openImpl(int, int) - Method in class net.freeutils.scrollphat.Pi4JDevice

out - Variable in class net.freeutils.scrollphat.JNADevDevice

P

parse(byte[]) - Method in class net.freeutils.scrollphat.LEDFont

Parses data in the ledfont format.

parsePython(InputStream, int) - Static method in class net.freeutils.scrollphat.FontConverter

Parses a python script defining a font data structure.

Pi4JDevice - Class in net.freeutils.scrollphat

A Device implementation that uses Pi4J for the low-level I2C communications with the device.

Pi4JDevice() - Constructor for class net.freeutils.scrollphat.Pi4JDevice

R

readBytes(InputStream) - Static method in class net.freeutils.scrollphat.Utils

Reads the entire contents of the given stream into a byte array.

readLines(File) - Static method in class net.freeutils.scrollphat.Utils

Reads an entire text file into an array of lines.

readLines(InputStream) - Static method in class net.freeutils.scrollphat.Utils

Reads an entire text stream into an array of lines.

readVarint(InputStream) - Static method in class net.freeutils.scrollphat.Utils

Reads a varint (variable-length integer) from a stream.

REG_BRIGHTNESS_CONFIG - Static variable in class net.freeutils.scrollphat.Device

REG_BRIGHTNESS_PWM - Static variable in class net.freeutils.scrollphat.Device

REG_CONFIG - Static variable in class net.freeutils.scrollphat.Device

REG_MATRIX1_DATA_START - Static variable in class net.freeutils.scrollphat.Device

REG_MATRIX2_DATA_START - Static variable in class net.freeutils.scrollphat.Device

REG_RESET - Static variable in class net.freeutils.scrollphat.Device

REG_UPDATE - Static variable in class net.freeutils.scrollphat.Device

render() - Method in class net.freeutils.scrollphat.Canvas

Render the matrix into a returned buffer, with transformations applied (flip, reverse, crop, etc.)

reset() - Method in class net.freeutils.scrollphat.Device

Resets the device (by writing the reset command to it).

reverse(byte[], byte[]) - Static method in class net.freeutils.scrollphat.Canvas

Reverses the order of bytes in an array.

S

save(OutputStream) - Method in class net.freeutils.scrollphat.LEDFont

Saves this font into the given stream in the ledfont format.

save(File) - Method in class net.freeutils.scrollphat.LEDFont

Saves this font into the given file in the ledfont format.

scroll(Device, byte[], int, int, int, int) - Static method in class net.freeutils.scrollphat.Animation

Scrolls the display from left to right.

scroll(Device, byte[], int, int) - Static method in class net.freeutils.scrollphat.Animation

Scrolls the display from left to right (with spaces before and after text)

scroll(int) - Method in class net.freeutils.scrollphat.Canvas

Scrolls the rendered columns by the given number of columns (positive or negative delta).

setBit(byte[], int, int, boolean) - Static method in class net.freeutils.scrollphat.Canvas

Sets the value of a single bit within a matrix of bits represented by a byte array.

setBrightness(int) - Method in class net.freeutils.scrollphat.Device

Sets the display brightness.

setColumn(int, int) - Method in class net.freeutils.scrollphat.Canvas

Sets the value of a column.

setColumns(int, byte[], int, int) - Method in class net.freeutils.scrollphat.Canvas

Sets the value of a sequence of columns.

setDisplay(int, int) - Method in class net.freeutils.scrollphat.Device

Sets the value of the given column.

setDisplay(int, byte[], int, int) - Method in class net.freeutils.scrollphat.Device

Sets the values of a consecutive sequence of columns.

setDisplay(int, byte[]) - Method in class net.freeutils.scrollphat.Device

Sets the values of a consecutive sequence of columns.

setDisplay(byte[]) - Method in class net.freeutils.scrollphat.Device

Sets the values of a consecutive sequence of columns, starting at the first column.

setFlip(boolean) - Method in class net.freeutils.scrollphat.Canvas

Sets whether the rendered matrix should be flipped vertically.

setMatrix(byte[]) - Method in class net.freeutils.scrollphat.Canvas

Sets the wrapped matrix bytes.

setOffset(int) - Method in class net.freeutils.scrollphat.Canvas

Sets the offset of the column within the matrix at which the rendering will start.

setPixel(int, int, boolean) - Method in class net.freeutils.scrollphat.Canvas

Sets the value of a pixel.

setReverse(boolean) - Method in class net.freeutils.scrollphat.Canvas

Sets whether the rendered matrix should be reversed horizontally.

shutdownHook - Variable in class net.freeutils.scrollphat.Device

T

throwErrorCount - Variable in class net.freeutils.scrollphat.Device

toAsciiArt(byte[], int, int, int) - Static method in class net.freeutils.scrollphat.Canvas

Converts the pixel matrix represented by a given byte array to a string containing the ASCII-art representation of the pixels.

toAsciiArt(byte[], int) - Static method in class net.freeutils.scrollphat.Canvas

Converts the pixel matrix represented by a given byte array to a string containing the ASCII-art representation of the pixels.

toAsciiArt(String, int) - Method in class net.freeutils.scrollphat.LEDFont

Writes the glyphs for the given sequence of characters into an ASCII-art string.

transitionHorizontally(Device, byte[], byte[], int) - Static method in class net.freeutils.scrollphat.Animation

transitionVertically(Device, byte[], byte[], int) - Static method in class net.freeutils.scrollphat.Animation

U

update() - Method in class net.freeutils.scrollphat.Device

Updates the display.

update(byte[]) - Method in class net.freeutils.scrollphat.Device

Writes the given display data and updates the display.

update() - Method in class net.freeutils.scrollphat.MockDevice

used - Variable in class net.freeutils.scrollphat.LEDFont

Utils - Class in net.freeutils.scrollphat

Provides General-purpose utility methods.

W

warnErrorCount - Variable in class net.freeutils.scrollphat.Device

width - Variable in class net.freeutils.scrollphat.Device

write(byte, int) - Method in class net.freeutils.scrollphat.Device

Writes a single byte of data to the given register.

write(byte, byte[], int, int) - Method in class net.freeutils.scrollphat.Device

Writes a series of bytes of data starting at the given register.

write(int, byte[], int) - Method in class net.freeutils.scrollphat.LEDFont

Writes the glyph for the given code point into an array.

write(char[], int, int, byte[], int) - Method in class net.freeutils.scrollphat.LEDFont

Writes the glyphs for the given characters into an array.

write(String, byte[], int) - Method in class net.freeutils.scrollphat.LEDFont

Writes the glyphs for the given string into an array.

write(String) - Method in class net.freeutils.scrollphat.LEDFont

Writes the glyphs for the given string.

writeImpl(byte, int) - Method in class net.freeutils.scrollphat.Device

Writes a single byte of data to the given register.

writeImpl(byte, byte[], int, int) - Method in class net.freeutils.scrollphat.Device

Writes a series of bytes of data starting at the given register.

writeImpl(byte, int) - Method in class net.freeutils.scrollphat.JNADevDevice

writeImpl(byte, byte[], int, int) - Method in class net.freeutils.scrollphat.JNADevDevice

writeImpl(byte, byte[], int, int) - Method in class net.freeutils.scrollphat.MockDevice

writeImpl(byte, int) - Method in class net.freeutils.scrollphat.Pi4JDevice

writeImpl(byte, byte[], int, int) - Method in class net.freeutils.scrollphat.Pi4JDevice

writeVarint(OutputStream, long) - Static method in class net.freeutils.scrollphat.Utils

Writes a varint (variable-length integer) to a stream.

A B C D E F G H I J L M N O P R S T U W