Package lejos.hardware.lcd

Interface CommonLCD

All Known Subinterfaces:

GraphicsLCD, TextLCD

public interface CommonLCD

Field Summary

Fields

Modifier and Type	Field and Description
static int	ROP_AND
static int	ROP_ANDINVERTED
static int	ROP_ANDREVERSE
static int	ROP_CLEAR Common raster operations for use with bitBlt
static int	ROP_COPY
static int	ROP_COPYINVERTED
static int	ROP_EQUIV
static int	ROP_INVERT
static int	ROP_NAND
static int	ROP_NOOP
static int	ROP_NOR
static int	ROP_OR
static int	ROP_ORINVERTED
static int	ROP_ORREVERSE
static int	ROP_SET
static int	ROP_XOR

Method Summary

Modifier and Type	Method and Description
void	bitBlt(byte[] src, int sw, int sh, int sx, int sy, byte[] dst, int dw, int dh, int dx, int dy, int w, int h, int rop) Standard two input BitBlt function.
void	bitBlt(byte[] src, int sw, int sh, int sx, int sy, int dx, int dy, int w, int h, int rop) Standard two input BitBlt function with the LCD display as the destination.
void	clear() Clear the display.
byte[]	getDisplay() Provide access to the LCD display frame buffer.
int	getHeight() Return the height of the associated drawing surface.
byte[]	getHWDisplay() Get access to hardware LCD display.
int	getWidth() Return the width of the associated drawing surface.
void	refresh() Refresh the display.
void	setAutoRefresh(boolean on) Turn on/off the automatic refresh of the LCD display.
int	setAutoRefreshPeriod(int period) Set the period used to perform automatic refreshing of the display.
void	setContrast(int contrast) Set the LCD contrast.

Field Detail

ROP_CLEAR

static final int ROP_CLEAR

Common raster operations for use with bitBlt

See Also:

Constant Field Values

ROP_AND

static final int ROP_AND

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ROP_ANDREVERSE

static final int ROP_ANDREVERSE

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ROP_COPY

static final int ROP_COPY

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ROP_ANDINVERTED

static final int ROP_ANDINVERTED

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Constant Field Values

ROP_NOOP

static final int ROP_NOOP

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Constant Field Values

ROP_XOR

static final int ROP_XOR

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ROP_OR

static final int ROP_OR

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Constant Field Values

ROP_NOR

static final int ROP_NOR

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ROP_EQUIV

static final int ROP_EQUIV

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ROP_INVERT

static final int ROP_INVERT

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Constant Field Values

ROP_ORREVERSE

static final int ROP_ORREVERSE

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ROP_COPYINVERTED

static final int ROP_COPYINVERTED

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ROP_ORINVERTED

static final int ROP_ORINVERTED

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ROP_NAND

static final int ROP_NAND

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Constant Field Values

ROP_SET

static final int ROP_SET

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Constant Field Values

Method Detail

refresh

void refresh()

Refresh the display. If auto refresh is off, this method will wait until the display refresh has completed. If auto refresh is on it will return immediately.

clear

void clear()

Clear the display.

getWidth

int getWidth()

Return the width of the associated drawing surface.
Note: This is a non standard method.

Returns:

width of the surface

getHeight

int getHeight()

Return the height of the associated drawing surface.
Note: This is a non standard method.

Returns:

height of the surface.

getDisplay

byte[] getDisplay()

Provide access to the LCD display frame buffer.

Returns:

byte array that is the frame buffer.

getHWDisplay

byte[] getHWDisplay()

Get access to hardware LCD display.

Returns:

byte array that is the frame buffer

setContrast

void setContrast(int contrast)

Set the LCD contrast.

Parameters:

contrast - 0 blank 0x60 full on

bitBlt

void bitBlt(byte[] src,
            int sw,
            int sh,
            int sx,
            int sy,
            int dx,
            int dy,
            int w,
            int h,
            int rop)

Standard two input BitBlt function with the LCD display as the destination. Supports standard raster ops and overlapping images. Images are held in native leJOS/Lego format.

Parameters:

src - byte array containing the source image

sw - Width of the source image

sh - Height of the source image

sx - X position to start the copy from

sy - Y Position to start the copy from

dx - X destination

dy - Y destination

w - width of the area to copy

h - height of the area to copy

rop - raster operation.

bitBlt

void bitBlt(byte[] src,
            int sw,
            int sh,
            int sx,
            int sy,
            byte[] dst,
            int dw,
            int dh,
            int dx,
            int dy,
            int w,
            int h,
            int rop)

Standard two input BitBlt function. Supports standard raster ops and overlapping images. Images are held in native leJOS/Lego format.

Parameters:

src - byte array containing the source image

sw - Width of the source image

sh - Height of the source image

sx - X position to start the copy from

sy - Y Position to start the copy from

dst - byte array containing the destination image

dw - Width of the destination image

dh - Height of the destination image

dx - X destination

dy - Y destination

w - width of the area to copy

h - height of the area to copy

rop - raster operation.

setAutoRefresh

void setAutoRefresh(boolean on)

Turn on/off the automatic refresh of the LCD display. At system startup auto refresh is on.

Parameters:

on - true to enable, false to disable

setAutoRefreshPeriod

int setAutoRefreshPeriod(int period)

Set the period used to perform automatic refreshing of the display. A period of 0 disables the refresh.

Parameters:

period - time in ms

Returns:

the previous refresh period.