/*********************************************************************
 *
 *  $Id: yocto_display.ts 75637 2026-08-20 16:54:40Z mvuilleu $
 *
 *  Implements the high-level API for DisplayLayer functions
 *
 *  - - - - - - - - - License information: - - - - - - - - -
 *
 *  Copyright (C) 2011 and beyond by Yoctopuce Sarl, Switzerland.
 *
 *  Yoctopuce Sarl (hereafter Licensor) grants to you a perpetual
 *  non-exclusive license to use, modify, copy and integrate this
 *  file into your software for the sole purpose of interfacing
 *  with Yoctopuce products.
 *
 *  You may reproduce and distribute copies of this file in
 *  source or object form, as long as the sole purpose of this
 *  code is to interface with Yoctopuce products. You must retain
 *  this notice in the distributed source file.
 *
 *  You should refer to Yoctopuce General Terms and Conditions
 *  for additional information regarding your rights and
 *  obligations.
 *
 *  THE SOFTWARE AND DOCUMENTATION ARE PROVIDED 'AS IS' WITHOUT
 *  WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
 *  WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS
 *  FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO
 *  EVENT SHALL LICENSOR BE LIABLE FOR ANY INCIDENTAL, SPECIAL,
 *  INDIRECT OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA,
 *  COST OF PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR
 *  SERVICES, ANY CLAIMS BY THIRD PARTIES (INCLUDING BUT NOT
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 *********************************************************************/
import { YAPIContext, YErrorMsg, YFunction } from './yocto_api.js';
/**
 * YDisplayLayer Class: Interface for drawing into display layers, obtained by calling display.get_displayLayer.
 *
 * Each DisplayLayer represents an image layer containing objects
 * to display (bitmaps, text, etc.). The content is displayed only when
 * the layer is active on the screen (and not masked by other
 * overlapping layers).
 */
export declare class YDisplayLayer {
    private _yapi;
    private _display;
    private _id;
    _cmdbuff: string;
    _hidden: boolean;
    _polyPrevX: number;
    _polyPrevY: number;
    readonly NO_INK: number;
    readonly BG_INK: number;
    readonly FG_INK: number;
    readonly ALIGN_TOP_LEFT: YDisplayLayer.ALIGN;
    readonly ALIGN_CENTER_LEFT: YDisplayLayer.ALIGN;
    readonly ALIGN_BASELINE_LEFT: YDisplayLayer.ALIGN;
    readonly ALIGN_BOTTOM_LEFT: YDisplayLayer.ALIGN;
    readonly ALIGN_TOP_CENTER: YDisplayLayer.ALIGN;
    readonly ALIGN_CENTER: YDisplayLayer.ALIGN;
    readonly ALIGN_BASELINE_CENTER: YDisplayLayer.ALIGN;
    readonly ALIGN_BOTTOM_CENTER: YDisplayLayer.ALIGN;
    readonly ALIGN_TOP_DECIMAL: YDisplayLayer.ALIGN;
    readonly ALIGN_CENTER_DECIMAL: YDisplayLayer.ALIGN;
    readonly ALIGN_BASELINE_DECIMAL: YDisplayLayer.ALIGN;
    readonly ALIGN_BOTTOM_DECIMAL: YDisplayLayer.ALIGN;
    readonly ALIGN_TOP_RIGHT: YDisplayLayer.ALIGN;
    readonly ALIGN_CENTER_RIGHT: YDisplayLayer.ALIGN;
    readonly ALIGN_BASELINE_RIGHT: YDisplayLayer.ALIGN;
    readonly ALIGN_BOTTOM_RIGHT: YDisplayLayer.ALIGN;
    static readonly NO_INK: number;
    static readonly BG_INK: number;
    static readonly FG_INK: number;
    static readonly ALIGN_TOP_LEFT: YDisplayLayer.ALIGN;
    static readonly ALIGN_CENTER_LEFT: YDisplayLayer.ALIGN;
    static readonly ALIGN_BASELINE_LEFT: YDisplayLayer.ALIGN;
    static readonly ALIGN_BOTTOM_LEFT: YDisplayLayer.ALIGN;
    static readonly ALIGN_TOP_CENTER: YDisplayLayer.ALIGN;
    static readonly ALIGN_CENTER: YDisplayLayer.ALIGN;
    static readonly ALIGN_BASELINE_CENTER: YDisplayLayer.ALIGN;
    static readonly ALIGN_BOTTOM_CENTER: YDisplayLayer.ALIGN;
    static readonly ALIGN_TOP_DECIMAL: YDisplayLayer.ALIGN;
    static readonly ALIGN_CENTER_DECIMAL: YDisplayLayer.ALIGN;
    static readonly ALIGN_BASELINE_DECIMAL: YDisplayLayer.ALIGN;
    static readonly ALIGN_BOTTOM_DECIMAL: YDisplayLayer.ALIGN;
    static readonly ALIGN_TOP_RIGHT: YDisplayLayer.ALIGN;
    static readonly ALIGN_CENTER_RIGHT: YDisplayLayer.ALIGN;
    static readonly ALIGN_BASELINE_RIGHT: YDisplayLayer.ALIGN;
    static readonly ALIGN_BOTTOM_RIGHT: YDisplayLayer.ALIGN;
    constructor(obj_parent: YDisplay, int_id: number);
    must_be_flushed(): boolean;
    resetHiddenFlag(): number;
    flush_now(): Promise<number>;
    command_push(cmd: string): Promise<number>;
    command_flush(cmd: string): Promise<number>;
    /**
     * Reverts the layer to its initial state (fully transparent, default settings).
     * Reinitializes the drawing pointer to the upper left position,
     * and selects the most visible pen color. If you only want to erase the layer
     * content, use the method clear() instead.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    reset(): Promise<number>;
    /**
     * Erases the whole content of the layer (makes it fully transparent).
     * This method does not change any other attribute of the layer.
     * To reinitialize the layer attributes to defaults settings, use the method
     * reset() instead.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    clear(): Promise<number>;
    /**
     * Selects the color to be used for all subsequent drawing functions,
     * for filling as well as for line and text drawing.
     * To select a different fill and outline color, use
     * selectFillColor and selectLineColor.
     * The pen color is provided as an RGB value.
     * For grayscale or monochrome displays, the value is
     * automatically converted to the proper range.
     *
     * @param color : the desired pen color, as a 24-bit RGB value
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectColorPen(color: number): Promise<number>;
    /**
     * Selects the pen gray level for all subsequent drawing functions,
     * for filling as well as for line and text drawing.
     * To select a different fill and outline color, use
     * selectFillColor and selectLineColor.
     * The gray level is provided as a number between
     * 0 (black) and 255 (white, or whichever the lightest color is).
     * For monochrome displays (without gray levels), any value
     * lower than 128 is rendered as black, and any value equal
     * or above to 128 is non-black.
     *
     * @param graylevel : the desired gray level, from 0 to 255
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectGrayPen(graylevel: number): Promise<number>;
    /**
     * Selects an eraser instead of a pen for all subsequent drawing functions,
     * except for bitmap copy functions. Any point drawn using the eraser
     * becomes transparent (as when the layer is empty), showing the other
     * layers beneath it.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectEraser(): Promise<number>;
    /**
     * Selects the color to be used for filling rectangular bars,
     * discs and polygons. The color is provided as an RGB value.
     * For grayscale or monochrome displays, the value is
     * automatically converted to the proper range.
     * You can also use the constants FG_INK to use the
     * default drawing colour, BG_INK to use the default
     * background colour, and NO_INK to disable filling.
     *
     * @param color : the desired drawing color, as a 24-bit RGB value,
     *         or one of the constants NO_INK, FG_INK
     *         or BG_INK
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectFillColor(color: number): Promise<number>;
    /**
     * Selects the color to be used for drawing the outline of rectangular
     * bars, discs and polygons, as well as for drawing lines and text.
     * The color is provided as an RGB value.
     * For grayscale or monochrome displays, the value is
     * automatically converted to the proper range.
     * You can also use the constants FG_INK to use the
     * default drawing colour, BG_INK to use the default
     * background colour, and NO_INK to disable outline drawing.
     *
     * @param color : the desired drawing color, as a 24-bit RGB value,
     *         or one of the constants NO_INK, FG_INK
     *         or BG_INK
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectLineColor(color: number): Promise<number>;
    /**
     * Selects the line width for drawing the outline of rectangular
     * bars, discs and polygons, as well as for drawing lines.
     *
     * @param width : the desired line width, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectLineWidth(width: number): Promise<number>;
    setAntialiasingMode(mode: boolean): Promise<number>;
    /**
     * Draws a single pixel at the specified position.
     *
     * @param x : the distance from left of layer, in pixels
     * @param y : the distance from top of layer, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawPixel(x: number, y: number): Promise<number>;
    /**
     * Draws an empty rectangle at a specified position.
     *
     * @param x1 : the distance from left of layer to the left border of the rectangle, in pixels
     * @param y1 : the distance from top of layer to the top border of the rectangle, in pixels
     * @param x2 : the distance from left of layer to the right border of the rectangle, in pixels
     * @param y2 : the distance from top of layer to the bottom border of the rectangle, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawRect(x1: number, y1: number, x2: number, y2: number): Promise<number>;
    /**
     * Draws a filled rectangular bar at a specified position.
     *
     * @param x1 : the distance from left of layer to the left border of the rectangle, in pixels
     * @param y1 : the distance from top of layer to the top border of the rectangle, in pixels
     * @param x2 : the distance from left of layer to the right border of the rectangle, in pixels
     * @param y2 : the distance from top of layer to the bottom border of the rectangle, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawBar(x1: number, y1: number, x2: number, y2: number): Promise<number>;
    /**
     * Draws an empty circle at a specified position.
     *
     * @param x : the distance from left of layer to the center of the circle, in pixels
     * @param y : the distance from top of layer to the center of the circle, in pixels
     * @param r : the radius of the circle, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawCircle(x: number, y: number, r: number): Promise<number>;
    /**
     * Draws a filled disc at a given position.
     *
     * @param x : the distance from left of layer to the center of the disc, in pixels
     * @param y : the distance from top of layer to the center of the disc, in pixels
     * @param r : the radius of the disc, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawDisc(x: number, y: number, r: number): Promise<number>;
    /**
     * Selects a font to use for the next text drawing functions, by providing the name of the
     * font file. You can use a built-in font as well as a font file that you have previously
     * uploaded to the device built-in memory. If you experience problems selecting a font
     * file, check the device logs for any error message such as missing font file or bad font
     * file format.
     *
     * @param fontname : the font file name, embedded fonts are 8x8.yfm, Small.yfm, Medium.yfm, Large.yfm
     * (not available on Yocto-MiniDisplay).
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    selectFont(fontname: string): Promise<number>;
    /**
     * Draws a text string at the specified position. The point of the text that is aligned
     * to the specified pixel position is called the anchor point, and can be chosen among
     * several options. Text is rendered from left to right, without implicit wrapping.
     *
     * @param x : the distance from left of layer to the text anchor point, in pixels
     * @param y : the distance from top of layer to the text anchor point, in pixels
     * @param anchor : the text anchor point, chosen among the YDisplayLayer.ALIGN enumeration:
     *         YDisplayLayer.ALIGN_TOP_LEFT,         YDisplayLayer.ALIGN_CENTER_LEFT,
     *         YDisplayLayer.ALIGN_BASELINE_LEFT,    YDisplayLayer.ALIGN_BOTTOM_LEFT,
     *         YDisplayLayer.ALIGN_TOP_CENTER,       YDisplayLayer.ALIGN_CENTER,
     *         YDisplayLayer.ALIGN_BASELINE_CENTER,  YDisplayLayer.ALIGN_BOTTOM_CENTER,
     *         YDisplayLayer.ALIGN_TOP_DECIMAL,      YDisplayLayer.ALIGN_CENTER_DECIMAL,
     *         YDisplayLayer.ALIGN_BASELINE_DECIMAL, YDisplayLayer.ALIGN_BOTTOM_DECIMAL,
     *         YDisplayLayer.ALIGN_TOP_RIGHT,        YDisplayLayer.ALIGN_CENTER_RIGHT,
     *         YDisplayLayer.ALIGN_BASELINE_RIGHT,   YDisplayLayer.ALIGN_BOTTOM_RIGHT.
     * @param text : the text string to draw
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawText(x: number, y: number, anchor: YDisplayLayer.ALIGN, text: string): Promise<number>;
    /**
     * Draws an image previously uploaded to the device filesystem, at the specified position.
     * At present time, GIF images are the only supported image format. If you experience
     * problems using an image file, check the device logs for any error message such as
     * missing image file or bad image file format.
     *
     * @param x : the distance from left of layer to the left of the image, in pixels
     * @param y : the distance from top of layer to the top of the image, in pixels
     * @param imagename : the GIF file name
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawImage(x: number, y: number, imagename: string): Promise<number>;
    /**
     * Draws a GIF image provided as a binary buffer at the specified position.
     * If the image drawing must be included in an animation sequence, save it
     * in the device filesystem first and use drawImage instead.
     *
     * @param x : the distance from left of layer to the left of the image, in pixels
     * @param y : the distance from top of layer to the top of the image, in pixels
     * @param gifimage : a binary object with the content of a GIF file
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawGIF(x: number, y: number, gifimage: Uint8Array): Promise<number>;
    /**
     * Draws a bitmap at the specified position. The bitmap is provided as a binary object,
     * where each pixel maps to a bit, from left to right and from top to bottom.
     * The most significant bit of each byte maps to the leftmost pixel, and the least
     * significant bit maps to the rightmost pixel. Bits set to 1 are drawn using the
     * layer selected pen color. Bits set to 0 are drawn using the specified background
     * color, unless NO_INK (-1) is specified, in which case they are not
     * drawn at all (as if transparent).
     *
     * @param x : the distance from left of layer to the left of the bitmap, in pixels
     * @param y : the distance from top of layer to the top of the bitmap, in pixels
     * @param w : the width of the bitmap, in pixels
     * @param bitmap : a binary object
     * @param bgcol : the RGB background color to use for zero bits, as a 24-bit RGB value,
     *         or one of the constants NO_INK, FG_INK or BG_INK
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawBitmap(x: number, y: number, w: number, bitmap: Uint8Array, bgcol: number): Promise<number>;
    /**
     * Draws a color pixmap at the specified position. The pixmap is provided as a binary
     * object, where each byte maps to one pixel. The 24 bit RGB value corresponding to each
     * byte value is defined in the palette provided as extra argument.
     * The palette maximal size is 8, and it is recommended to use the smallest possible
     * palette size to optimize the size of data to be sent to the display.
     * The height of the pixmap is implicitely given by the pixmap buffer size.
     *
     * @param x : the distance from left of layer to the left of the pixmap, in pixels
     * @param y : the distance from top of layer to the top of the pixmap, in pixels
     * @param w : the width of the pixmap, in pixels
     * @param pixmap : a binary buffer where each byte maps to one pixel
     * @param palette : an array of 24-bit RGB values, defining the color for each byte value in pixmap
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    drawPixmap(x: number, y: number, w: number, pixmap: Uint8Array, palette: number[]): Promise<number>;
    /**
     * Moves the drawing pointer of this layer to the specified position.
     *
     * @param x : the distance from left of layer, in pixels
     * @param y : the distance from top of layer, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    moveTo(x: number, y: number): Promise<number>;
    /**
     * Draws a line from current drawing pointer position to the specified position.
     * The specified destination pixel is included in the line. The pointer position
     * is then moved to the end point of the line.
     *
     * @param x : the distance from left of layer to the end point of the line, in pixels
     * @param y : the distance from top of layer to the end point of the line, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    lineTo(x: number, y: number): Promise<number>;
    /**
     * Starts drawing a polygon with the first corner at the specified position.
     *
     * @param x : the distance from left of layer, in pixels
     * @param y : the distance from top of layer, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    polygonStart(x: number, y: number): Promise<number>;
    /**
     * Adds a point to the currently open polygon, previously opened using
     * polygonStart.
     *
     * @param x : the distance from left of layer to the new point, in pixels
     * @param y : the distance from top of layer to the new point, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    polygonAdd(x: number, y: number): Promise<number>;
    /**
     * Closes the currently open polygon, fill its content the fill color currently
     * selected for the layer, and draw its outline using the selected line color.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    polygonEnd(): Promise<number>;
    /**
     * Outputs a message in the console area, and advances the console pointer accordingly.
     * The console pointer position is automatically moved to the beginning
     * of the next line when a newline character is met, or when the right margin
     * is hit. When the new text to display extends below the lower margin, the
     * console area is automatically scrolled up.
     *
     * @param text : the message to display
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    consoleOut(text: string): Promise<number>;
    /**
     * Sets up display margins for the consoleOut function.
     *
     * @param x1 : the distance from left of layer to the left margin, in pixels
     * @param y1 : the distance from top of layer to the top margin, in pixels
     * @param x2 : the distance from left of layer to the right margin, in pixels
     * @param y2 : the distance from top of layer to the bottom margin, in pixels
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    setConsoleMargins(x1: number, y1: number, x2: number, y2: number): Promise<number>;
    /**
     * Sets up the background color used by the clearConsole function and by
     * the console scrolling feature.
     *
     * @param bgcol : the background gray level to use when scrolling (0 = black,
     *         255 = white), or -1 for transparent
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    setConsoleBackground(bgcol: number): Promise<number>;
    /**
     * Sets up the wrapping behavior used by the consoleOut function.
     *
     * @param wordwrap : true to wrap only between words,
     *         false to wrap on the last column anyway.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    setConsoleWordWrap(wordwrap: boolean): Promise<number>;
    /**
     * Blanks the console area within console margins, and resets the console pointer
     * to the upper left corner of the console.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    clearConsole(): Promise<number>;
    /**
     * Sets the position of the layer relative to the display upper left corner.
     * When smooth scrolling is used, the display offset of the layer is
     * automatically updated during the next milliseconds to animate the move of the layer.
     *
     * @param x : the distance from left of display to the upper left corner of the layer
     * @param y : the distance from top of display to the upper left corner of the layer
     * @param scrollTime : number of milliseconds to use for smooth scrolling, or
     *         0 if the scrolling should be immediate.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    setLayerPosition(x: number, y: number, scrollTime: number): Promise<number>;
    /**
     * Hides the layer. The state of the layer is preserved but the layer is not displayed
     * on the screen until the next call to unhide(). Hiding the layer can positively
     * affect the drawing speed, since it postpones the rendering until all operations are
     * completed (double-buffering).
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    hide(): Promise<number>;
    /**
     * Shows the layer. Shows the layer again after a hide command.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    unhide(): Promise<number>;
    /**
     * Gets parent YDisplay. Returns the parent YDisplay object of the current YDisplayLayer.
     *
     * @return an YDisplay object
     */
    get_display(): Promise<YDisplay>;
    /**
     * Returns the display width, in pixels.
     *
     * @return an integer corresponding to the display width, in pixels
     *
     * On failure, throws an exception or returns YDisplayLayer.DISPLAYWIDTH_INVALID.
     */
    get_displayWidth(): Promise<number>;
    /**
     * Returns the display height, in pixels.
     *
     * @return an integer corresponding to the display height, in pixels
     *
     * On failure, throws an exception or returns YDisplayLayer.DISPLAYHEIGHT_INVALID.
     */
    get_displayHeight(): Promise<number>;
    /**
     * Returns the width of the layers to draw on, in pixels.
     *
     * @return an integer corresponding to the width of the layers to draw on, in pixels
     *
     * On failure, throws an exception or returns YDisplayLayer.LAYERWIDTH_INVALID.
     */
    get_layerWidth(): Promise<number>;
    /**
     * Returns the height of the layers to draw on, in pixels.
     *
     * @return an integer corresponding to the height of the layers to draw on, in pixels
     *
     * On failure, throws an exception or returns YDisplayLayer.LAYERHEIGHT_INVALID.
     */
    get_layerHeight(): Promise<number>;
}
export declare namespace YDisplayLayer {
    const enum ALIGN {
        TOP_LEFT = 0,
        CENTER_LEFT = 1,
        BASELINE_LEFT = 2,
        BOTTOM_LEFT = 3,
        TOP_CENTER = 4,
        CENTER = 5,
        BASELINE_CENTER = 6,
        BOTTOM_CENTER = 7,
        TOP_DECIMAL = 8,
        CENTER_DECIMAL = 9,
        BASELINE_DECIMAL = 10,
        BOTTOM_DECIMAL = 11,
        TOP_RIGHT = 12,
        CENTER_RIGHT = 13,
        BASELINE_RIGHT = 14,
        BOTTOM_RIGHT = 15
    }
}
/**
 * YDisplay Class: display control interface, available for instance in the Yocto-Display, the
 * Yocto-MaxiDisplay, the Yocto-MaxiDisplay-G or the Yocto-MiniDisplay
 *
 * The YDisplay class allows to drive Yoctopuce displays.
 * Yoctopuce display interface has been designed to easily
 * show information and images. The device provides built-in
 * multi-layer rendering. Layers can be drawn offline, individually,
 * and freely moved on the display. It can also replay recorded
 * sequences (animations).
 *
 * In order to draw on the screen, you should use the
 * display.get_displayLayer method to retrieve the layer(s) on
 * which you want to draw, and then use methods defined in
 * YDisplayLayer to draw on the layers.
 */
/** @extends {YFunction} **/
export declare class YDisplay extends YFunction {
    _className: string;
    _enabled: YDisplay.ENABLED;
    _startupSeq: string;
    _brightness: number;
    _autoInvertDelay: number;
    _orientation: YDisplay.ORIENTATION;
    _displayPanel: string;
    _displayWidth: number;
    _displayHeight: number;
    _displayType: YDisplay.DISPLAYTYPE;
    _layerWidth: number;
    _layerHeight: number;
    _layerCount: number;
    _command: string;
    _valueCallbackDisplay: YDisplay.ValueCallback | null;
    _allDisplayLayers: YDisplayLayer[];
    _frozenUntil: number;
    _recording: boolean;
    _sequence: string;
    readonly ENABLED_FALSE: YDisplay.ENABLED;
    readonly ENABLED_TRUE: YDisplay.ENABLED;
    readonly ENABLED_INVALID: YDisplay.ENABLED;
    readonly STARTUPSEQ_INVALID: string;
    readonly BRIGHTNESS_INVALID: number;
    readonly AUTOINVERTDELAY_INVALID: number;
    readonly ORIENTATION_LEFT: YDisplay.ORIENTATION;
    readonly ORIENTATION_UP: YDisplay.ORIENTATION;
    readonly ORIENTATION_RIGHT: YDisplay.ORIENTATION;
    readonly ORIENTATION_DOWN: YDisplay.ORIENTATION;
    readonly ORIENTATION_INVALID: YDisplay.ORIENTATION;
    readonly DISPLAYPANEL_INVALID: string;
    readonly DISPLAYWIDTH_INVALID: number;
    readonly DISPLAYHEIGHT_INVALID: number;
    readonly DISPLAYTYPE_MONO: YDisplay.DISPLAYTYPE;
    readonly DISPLAYTYPE_EPAPER_BW: YDisplay.DISPLAYTYPE;
    readonly DISPLAYTYPE_EPAPER_BWR: YDisplay.DISPLAYTYPE;
    readonly DISPLAYTYPE_EPAPER_BWRY: YDisplay.DISPLAYTYPE;
    readonly DISPLAYTYPE_INVALID: YDisplay.DISPLAYTYPE;
    readonly LAYERWIDTH_INVALID: number;
    readonly LAYERHEIGHT_INVALID: number;
    readonly LAYERCOUNT_INVALID: number;
    readonly COMMAND_INVALID: string;
    readonly FASTREFRESH_WHENEVER_POSSIBLE: YDisplay.FASTREFRESH;
    readonly FASTREFRESH_WHENEVER_SUPPORTED: YDisplay.FASTREFRESH;
    readonly FASTREFRESH_NEVER: YDisplay.FASTREFRESH;
    readonly FASTREFRESH_INVALID: YDisplay.FASTREFRESH;
    readonly REGENERATE_ON_REQUEST_ONLY: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_DAY: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_12H: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_6H: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_3H: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_2H: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_HOUR: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_30MIN: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_15MIN: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_480: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_432: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_360: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_288: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_240: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_192: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_144: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_96: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_48: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_36: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_24: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_12: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_10: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_8: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_6: YDisplay.REGENERATE;
    readonly REGENERATE_EVERY_4: YDisplay.REGENERATE;
    readonly REGENERATE_ALWAYS: YDisplay.REGENERATE;
    readonly REGENERATE_INVALID: YDisplay.REGENERATE;
    readonly DISPLAYSTATE_FAILURE: YDisplay.DISPLAYSTATE;
    readonly DISPLAYSTATE_OFF: YDisplay.DISPLAYSTATE;
    readonly DISPLAYSTATE_POWERING: YDisplay.DISPLAYSTATE;
    readonly DISPLAYSTATE_IDLE: YDisplay.DISPLAYSTATE;
    readonly DISPLAYSTATE_REFRESHING: YDisplay.DISPLAYSTATE;
    readonly DISPLAYSTATE_INVALID: YDisplay.DISPLAYSTATE;
    static readonly ENABLED_FALSE: YDisplay.ENABLED;
    static readonly ENABLED_TRUE: YDisplay.ENABLED;
    static readonly ENABLED_INVALID: YDisplay.ENABLED;
    static readonly STARTUPSEQ_INVALID: string;
    static readonly BRIGHTNESS_INVALID: number;
    static readonly AUTOINVERTDELAY_INVALID: number;
    static readonly ORIENTATION_LEFT: YDisplay.ORIENTATION;
    static readonly ORIENTATION_UP: YDisplay.ORIENTATION;
    static readonly ORIENTATION_RIGHT: YDisplay.ORIENTATION;
    static readonly ORIENTATION_DOWN: YDisplay.ORIENTATION;
    static readonly ORIENTATION_INVALID: YDisplay.ORIENTATION;
    static readonly DISPLAYPANEL_INVALID: string;
    static readonly DISPLAYWIDTH_INVALID: number;
    static readonly DISPLAYHEIGHT_INVALID: number;
    static readonly DISPLAYTYPE_MONO: YDisplay.DISPLAYTYPE;
    static readonly DISPLAYTYPE_EPAPER_BW: YDisplay.DISPLAYTYPE;
    static readonly DISPLAYTYPE_EPAPER_BWR: YDisplay.DISPLAYTYPE;
    static readonly DISPLAYTYPE_EPAPER_BWRY: YDisplay.DISPLAYTYPE;
    static readonly DISPLAYTYPE_INVALID: YDisplay.DISPLAYTYPE;
    static readonly LAYERWIDTH_INVALID: number;
    static readonly LAYERHEIGHT_INVALID: number;
    static readonly LAYERCOUNT_INVALID: number;
    static readonly COMMAND_INVALID: string;
    static readonly FASTREFRESH_WHENEVER_POSSIBLE: YDisplay.FASTREFRESH;
    static readonly FASTREFRESH_WHENEVER_SUPPORTED: YDisplay.FASTREFRESH;
    static readonly FASTREFRESH_NEVER: YDisplay.FASTREFRESH;
    static readonly FASTREFRESH_INVALID: YDisplay.FASTREFRESH;
    static readonly REGENERATE_ON_REQUEST_ONLY: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_DAY: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_12H: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_6H: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_3H: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_2H: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_HOUR: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_30MIN: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_15MIN: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_480: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_432: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_360: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_288: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_240: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_192: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_144: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_96: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_48: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_36: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_24: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_12: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_10: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_8: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_6: YDisplay.REGENERATE;
    static readonly REGENERATE_EVERY_4: YDisplay.REGENERATE;
    static readonly REGENERATE_ALWAYS: YDisplay.REGENERATE;
    static readonly REGENERATE_INVALID: YDisplay.REGENERATE;
    static readonly DISPLAYSTATE_FAILURE: YDisplay.DISPLAYSTATE;
    static readonly DISPLAYSTATE_OFF: YDisplay.DISPLAYSTATE;
    static readonly DISPLAYSTATE_POWERING: YDisplay.DISPLAYSTATE;
    static readonly DISPLAYSTATE_IDLE: YDisplay.DISPLAYSTATE;
    static readonly DISPLAYSTATE_REFRESHING: YDisplay.DISPLAYSTATE;
    static readonly DISPLAYSTATE_INVALID: YDisplay.DISPLAYSTATE;
    constructor(yapi: YAPIContext, func: string);
    imm_parseAttr(name: string, val: any): number;
    /**
     * Returns true if the screen is powered, false otherwise.
     *
     * @return either YDisplay.ENABLED_FALSE or YDisplay.ENABLED_TRUE, according to true if the screen is
     * powered, false otherwise
     *
     * On failure, throws an exception or returns YDisplay.ENABLED_INVALID.
     */
    get_enabled(): Promise<YDisplay.ENABLED>;
    /**
     * Changes the power state of the display.
     *
     * @param newval : either YDisplay.ENABLED_FALSE or YDisplay.ENABLED_TRUE, according to the power
     * state of the display
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_enabled(newval: YDisplay.ENABLED): Promise<number>;
    /**
     * Returns the name of the sequence to play when the displayed is powered on.
     *
     * @return a string corresponding to the name of the sequence to play when the displayed is powered on
     *
     * On failure, throws an exception or returns YDisplay.STARTUPSEQ_INVALID.
     */
    get_startupSeq(): Promise<string>;
    /**
     * Changes the name of the sequence to play when the display is powered on.
     * Remember to call the saveToFlash() method of the module if the
     * modification must be kept.
     *
     * @param newval : a string corresponding to the name of the sequence to play when the display is powered on
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_startupSeq(newval: string): Promise<number>;
    /**
     * Returns the luminosity of the  module informative LEDs (from 0 to 100).
     *
     * @return an integer corresponding to the luminosity of the  module informative LEDs (from 0 to 100)
     *
     * On failure, throws an exception or returns YDisplay.BRIGHTNESS_INVALID.
     */
    get_brightness(): Promise<number>;
    /**
     * Changes the brightness of the display. The parameter is a value between 0 and
     * 100. Remember to call the saveToFlash() method of the module if the
     * modification must be kept.
     *
     * @param newval : an integer corresponding to the brightness of the display
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_brightness(newval: number): Promise<number>;
    /**
     * Returns the interval between automatic display inversions, or 0 if automatic
     * inversion is disabled. Using the automatic inversion mechanism reduces the
     * burn-in that occurs on OLED screens over long periods when the same content
     * remains displayed on the screen.
     *
     * @return an integer corresponding to the interval between automatic display inversions, or 0 if automatic
     *         inversion is disabled
     *
     * On failure, throws an exception or returns YDisplay.AUTOINVERTDELAY_INVALID.
     */
    get_autoInvertDelay(): Promise<number>;
    /**
     * Changes the interval between automatic display inversions.
     * The parameter is the number of seconds, or 0 to disable automatic inversion.
     * Using the automatic inversion mechanism reduces the burn-in that occurs on OLED
     * screens over long periods when the same content remains displayed on the screen.
     * Remember to call the saveToFlash() method of the module if the
     * modification must be kept.
     *
     * @param newval : an integer corresponding to the interval between automatic display inversions
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_autoInvertDelay(newval: number): Promise<number>;
    /**
     * Returns the currently selected display orientation. The orientation is defined as the side of the
     * screen where the
     * USB connector (for OLED displays) or the ribbon cable (for ePaper panels) is located when the
     * display is up straight.
     *
     * @return a value among YDisplay.ORIENTATION_LEFT, YDisplay.ORIENTATION_UP,
     * YDisplay.ORIENTATION_RIGHT and YDisplay.ORIENTATION_DOWN corresponding to the currently selected
     * display orientation
     *
     * On failure, throws an exception or returns YDisplay.ORIENTATION_INVALID.
     */
    get_orientation(): Promise<YDisplay.ORIENTATION>;
    /**
     * Changes the display orientation. he orientation is defined as the side of the screen where the
     * USB connector (for OLED displays) or the ribbon cable (for ePaper panels) is located when the
     * display is up straight. Remember to call the saveToFlash()
     * method of the module if the modification must be kept.
     *
     * @param newval : a value among YDisplay.ORIENTATION_LEFT, YDisplay.ORIENTATION_UP,
     * YDisplay.ORIENTATION_RIGHT and YDisplay.ORIENTATION_DOWN corresponding to the display orientation
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_orientation(newval: YDisplay.ORIENTATION): Promise<number>;
    /**
     * Returns the exact model of the display panel.
     *
     * @return a string corresponding to the exact model of the display panel
     *
     * On failure, throws an exception or returns YDisplay.DISPLAYPANEL_INVALID.
     */
    get_displayPanel(): Promise<string>;
    /**
     * Changes the model of display to match the connected display panel.
     * This function has no effect if the module does not support the selected
     * display panel. Remember to call the saveToFlash()
     * method of the module if the modification must be kept.
     *
     * @param newval : a string corresponding to the model of display to match the connected display panel
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_displayPanel(newval: string): Promise<number>;
    /**
     * Returns the display width, in pixels.
     *
     * @return an integer corresponding to the display width, in pixels
     *
     * On failure, throws an exception or returns YDisplay.DISPLAYWIDTH_INVALID.
     */
    get_displayWidth(): Promise<number>;
    /**
     * Returns the display height, in pixels.
     *
     * @return an integer corresponding to the display height, in pixels
     *
     * On failure, throws an exception or returns YDisplay.DISPLAYHEIGHT_INVALID.
     */
    get_displayHeight(): Promise<number>;
    /**
     * Returns the display type: monochrome OLED, black and white ePaper, color ePaper, and so on.
     *
     * @return a value among YDisplay.DISPLAYTYPE_MONO, YDisplay.DISPLAYTYPE_EPAPER_BW,
     * YDisplay.DISPLAYTYPE_EPAPER_BWR and YDisplay.DISPLAYTYPE_EPAPER_BWRY corresponding to the display
     * type: monochrome OLED, black and white ePaper, color ePaper, and so on
     *
     * On failure, throws an exception or returns YDisplay.DISPLAYTYPE_INVALID.
     */
    get_displayType(): Promise<YDisplay.DISPLAYTYPE>;
    /**
     * Returns the width of the layers to draw on, in pixels.
     *
     * @return an integer corresponding to the width of the layers to draw on, in pixels
     *
     * On failure, throws an exception or returns YDisplay.LAYERWIDTH_INVALID.
     */
    get_layerWidth(): Promise<number>;
    /**
     * Returns the height of the layers to draw on, in pixels.
     *
     * @return an integer corresponding to the height of the layers to draw on, in pixels
     *
     * On failure, throws an exception or returns YDisplay.LAYERHEIGHT_INVALID.
     */
    get_layerHeight(): Promise<number>;
    /**
     * Returns the number of available layers to draw on.
     *
     * @return an integer corresponding to the number of available layers to draw on
     *
     * On failure, throws an exception or returns YDisplay.LAYERCOUNT_INVALID.
     */
    get_layerCount(): Promise<number>;
    get_command(): Promise<string>;
    set_command(newval: string): Promise<number>;
    /**
     * Retrieves a display for a given identifier.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the display is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YDisplay.isOnline() to test if the display is
     * indeed online at a given time. In case of ambiguity when looking for
     * a display by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * If a call to this object's is_online() method returns FALSE although
     * you are certain that the matching device is plugged, make sure that you did
     * call registerHub() at application initialization time.
     *
     * @param func : a string that uniquely characterizes the display, for instance
     *         YD128X32.display.
     *
     * @return a YDisplay object allowing you to drive the display.
     */
    static FindDisplay(func: string): YDisplay;
    /**
     * Retrieves a display for a given identifier in a YAPI context.
     * The identifier can be specified using several formats:
     *
     * - FunctionLogicalName
     * - ModuleSerialNumber.FunctionIdentifier
     * - ModuleSerialNumber.FunctionLogicalName
     * - ModuleLogicalName.FunctionIdentifier
     * - ModuleLogicalName.FunctionLogicalName
     *
     *
     * This function does not require that the display is online at the time
     * it is invoked. The returned object is nevertheless valid.
     * Use the method YDisplay.isOnline() to test if the display is
     * indeed online at a given time. In case of ambiguity when looking for
     * a display by logical name, no error is notified: the first instance
     * found is returned. The search is performed first by hardware name,
     * then by logical name.
     *
     * @param yctx : a YAPI context
     * @param func : a string that uniquely characterizes the display, for instance
     *         YD128X32.display.
     *
     * @return a YDisplay object allowing you to drive the display.
     */
    static FindDisplayInContext(yctx: YAPIContext, func: string): YDisplay;
    /**
     * Registers the callback function that is invoked on every change of advertised value.
     * The callback is then invoked only during the execution of ySleep or yHandleEvents.
     * This provides control over the time when the callback is triggered. For good responsiveness,
     * remember to call one of these two functions periodically. The callback is called once juste after beeing
     * registered, passing the current advertised value  of the function, provided that it is not an empty string.
     * To unregister a callback, pass a null pointer as argument.
     *
     * @param callback : the callback function to call, or a null pointer. The callback function should take two
     *         arguments: the function object of which the value has changed, and the character string describing
     *         the new advertised value.
     * @noreturn
     */
    registerValueCallback(callback: YDisplay.ValueCallback | null): Promise<number>;
    _invokeValueCallback(value: string): Promise<number>;
    sendCommand(cmd: string): Promise<number>;
    flushLayers(): Promise<number>;
    resetHiddenLayerFlags(): number;
    isFrozen(): boolean;
    /**
     * Returns the fast refresh usage policy in use (ePaper displays only).
     * This setting is combined with the regenerate policy to determine when the screen
     * should be updated using a fast update versus or regenerated using a slower,
     * flickering full refresh.
     *
     * @return a value among the YDisplay.FASTREFRESH enumeration
     *         (YDisplay.FASTREFRESH_WHENEVER_POSSIBLE,
     *         YDisplay.FASTREFRESH_WHENEVER_SUPPORTED,
     *         YDisplay.FASTREFRESH_NEVER).
     *
     * On failure, throws an exception or returns YDisplay.FASTREFRESH_INVALID.
     */
    get_fastRefreshPolicy(): Promise<YDisplay.FASTREFRESH>;
    /**
     * Returns the display regeneration minimal frequency (ePaper displays only).
     * This setting is combined with the fast refresh usage policy to determine
     * when the screen should be updated using a fast update versus or regenerated
     * using a slower, flickering full refresh. To change the display regeneration minimal
     * frequency, use methode set_fastRefreshPolicy().
     *
     * @return a value among the YDisplay.REGENERATE enumeration
     *         (YDisplay.REGENERATE_ON_REQUEST_ONLY,
     *         YDisplay.REGENERATE_EVERY_DAY, YDisplay.REGENERATE_EVERY_12H,
     *         YDisplay.REGENERATE_EVERY_6H, YDisplay.REGENERATE_EVERY_3H,
     *         YDisplay.REGENERATE_EVERY_2H, YDisplay.REGENERATE_EVERY_HOUR,
     *         YDisplay.REGENERATE_EVERY_30MIN, YDisplay.REGENERATE_EVERY_15MIN,
     *         YDisplay.REGENERATE_EVERY_480, YDisplay.REGENERATE_EVERY_432,
     *         YDisplay.REGENERATE_EVERY_360, YDisplay.REGENERATE_EVERY_288,
     *         YDisplay.REGENERATE_EVERY_240, YDisplay.REGENERATE_EVERY_192,
     *         YDisplay.REGENERATE_EVERY_144, YDisplay.REGENERATE_EVERY_96,
     *         YDisplay.REGENERATE_EVERY_48, YDisplay.REGENERATE_EVERY_36,
     *         YDisplay.REGENERATE_EVERY_24, YDisplay.REGENERATE_EVERY_12,
     *         YDisplay.REGENERATE_EVERY_10, YDisplay.REGENERATE_EVERY_8,
     *         YDisplay.REGENERATE_EVERY_6, YDisplay.REGENERATE_EVERY_4,
     *         YDisplay.REGENERATE_ALWAYS).
     *
     * On failure, throws an exception or returns YDisplay.REGENERATE_INVALID.
     */
    get_regeneratePolicy(): Promise<YDisplay.REGENERATE>;
    /**
     * Changes the fast refresh usage policy and display regeneration minimal frequency
     * (ePaper displays only). These settings jointly determine when the screen should be
     * updated using a fast update versus or regenerated using a slower, flickering full
     * refresh.
     *
     * @param fastRefresh : a value among the YDisplay.FASTREFRESH enumeration
     *         (YDisplay.FASTREFRESH_WHENEVER_POSSIBLE,
     *         YDisplay.FASTREFRESH_WHENEVER_SUPPORTED,
     *         YDisplay.FASTREFRESH_NEVER),
     *         corresponding to the policy for using fast refresh.
     * @param regenerate : a value among the enumeration YRefFrame.REGENERATE
     *         (YDisplay.REGENERATE_ON_REQUEST_ONLY,
     *         YDisplay.REGENERATE_EVERY_DAY, YDisplay.REGENERATE_EVERY_12H,
     *         YDisplay.REGENERATE_EVERY_6H, YDisplay.REGENERATE_EVERY_3H,
     *         YDisplay.REGENERATE_EVERY_2H, YDisplay.REGENERATE_EVERY_HOUR,
     *         YDisplay.REGENERATE_EVERY_30MIN, YDisplay.REGENERATE_EVERY_15MIN,
     *         YDisplay.REGENERATE_EVERY_480, YDisplay.REGENERATE_EVERY_432,
     *         YDisplay.REGENERATE_EVERY_360, YDisplay.REGENERATE_EVERY_288,
     *         YDisplay.REGENERATE_EVERY_240, YDisplay.REGENERATE_EVERY_192,
     *         YDisplay.REGENERATE_EVERY_144, YDisplay.REGENERATE_EVERY_96,
     *         YDisplay.REGENERATE_EVERY_48, YDisplay.REGENERATE_EVERY_36,
     *         YDisplay.REGENERATE_EVERY_24, YDisplay.REGENERATE_EVERY_12,
     *         YDisplay.REGENERATE_EVERY_10, YDisplay.REGENERATE_EVERY_8,
     *         YDisplay.REGENERATE_EVERY_6, YDisplay.REGENERATE_EVERY_4,
     *         YDisplay.REGENERATE_ALWAYS),
     *         corresponding to the display minimal regeneration frequency.
     *
     * Remember to call the saveToFlash()
     * method of the module if the modification must be kept.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    set_fastRefreshPolicy(fastRefresh: YDisplay.FASTREFRESH, regenerate: YDisplay.REGENERATE): Promise<number>;
    /**
     * Clears the display screen and resets all display layers to their default state.
     * Using this function in a sequence will kill the sequence play-back. Do not use that
     * function to reset the display at sequence start-up.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    resetAll(): Promise<number>;
    /**
     * Forces an ePaper screen to perform a regenerative update using the slow
     * update method. Periodic use of the slow method (total panel update with
     * multiple inversions) prevents ghosting effects and improves contrast.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    regenerateDisplay(): Promise<number>;
    /**
     * Returns the current state of an ePaper display, specifically to
     * determine whether an update is in progress or whether a
     * configuration issue has been detected. If a display configuration
     * error has been detected, the error message can be retrieved.
     *
     * @param errmsg : a string passed by reference to receive the error message.
     *
     * @return a value among the enumeration YDisplay.DISPLAYSTATE
     *         (YDisplay.DISPLAYSTATE_FAILURE, YDisplay.DISPLAYSTATE_OFF,
     *         YDisplay.DISPLAYSTATE_POWERING, YDisplay.DISPLAYSTATE_IDLE,
     *         YDisplay.DISPLAYSTATE_REFRESHING)
     *         corresponding to the current display state.
     */
    get_ePaperState(errmsg: YErrorMsg): Promise<YDisplay.DISPLAYSTATE>;
    /**
     * Disables screen refresh for a short period of time. The combination of
     * postponeRefresh and triggerRefresh can be used as an
     * alternative to double-buffering to avoid flickering during display updates.
     *
     * @param duration : duration of deactivation in milliseconds (max. 30 seconds)
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    postponeRefresh(duration: number): Promise<number>;
    /**
     * Triggers an immediate screen refresh. The combination of
     * postponeRefresh and triggerRefresh can be used as an
     * alternative to double-buffering to avoid flickering during display updates.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    triggerRefresh(): Promise<number>;
    /**
     * Smoothly changes the brightness of the screen to produce a fade-in or fade-out
     * effect.
     *
     * @param brightness : the new screen brightness
     * @param duration : duration of the brightness transition, in milliseconds.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    fade(brightness: number, duration: number): Promise<number>;
    /**
     * Starts to record all display commands into a sequence, for later replay.
     * The name used to store the sequence is specified when calling
     * saveSequence(), once the recording is complete.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    newSequence(): Promise<number>;
    /**
     * Stops recording display commands and saves the sequence into the specified
     * file on the display internal memory. The sequence can be later replayed
     * using playSequence().
     *
     * @param sequenceName : the name of the newly created sequence
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    saveSequence(sequenceName: string): Promise<number>;
    /**
     * Replays a display sequence previously recorded using
     * newSequence() and saveSequence().
     *
     * @param sequenceName : the name of the newly created sequence
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    playSequence(sequenceName: string): Promise<number>;
    /**
     * Waits for a specified delay (in milliseconds) before playing next
     * commands in current sequence. This method can be used while
     * recording a display sequence, to insert a timed wait in the sequence
     * (without any immediate effect). It can also be used dynamically while
     * playing a pre-recorded sequence, to suspend or resume the execution of
     * the sequence. To cancel a delay, call the same method with a zero delay.
     *
     * @param delay_ms : the duration to wait, in milliseconds
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    pauseSequence(delay_ms: number): Promise<number>;
    /**
     * Stops immediately any ongoing sequence replay.
     * The display is left as is.
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    stopSequence(): Promise<number>;
    /**
     * Uploads an arbitrary file (for instance a GIF file) to the display, to the
     * specified full path name. If a file already exists with the same path name,
     * its content is overwritten.
     *
     * @param pathname : path and name of the new file to create
     * @param content : binary buffer with the content to set
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    upload(pathname: string, content: Uint8Array): Promise<number>;
    /**
     * Copies the whole content of a layer to another layer. The color and transparency
     * of all the pixels from the destination layer are set to match the source pixels.
     * This method only affects the displayed content, but does not change any
     * property of the layer object.
     * Note that layer 0 has no transparency support (it is always completely opaque).
     *
     * @param srcLayerId : the identifier of the source layer (a number in range 0..layerCount-1)
     * @param dstLayerId : the identifier of the destination layer (a number in range 0..layerCount-1)
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    copyLayerContent(srcLayerId: number, dstLayerId: number): Promise<number>;
    /**
     * Swaps the whole content of two layers. The color and transparency of all the pixels from
     * the two layers are swapped. This method only affects the displayed content, but does
     * not change any property of the layer objects. In particular, the visibility of each
     * layer stays unchanged. When used between one hidden layer and a visible layer,
     * this method makes it possible to easily implement double-buffering.
     * Note that layer 0 has no transparency support (it is always completely opaque).
     *
     * @param layerIdA : the first layer (a number in range 0..layerCount-1)
     * @param layerIdB : the second layer (a number in range 0..layerCount-1)
     *
     * @return YAPI.SUCCESS if the call succeeds.
     *
     * On failure, throws an exception or returns a negative error code.
     */
    swapLayerContent(layerIdA: number, layerIdB: number): Promise<number>;
    /**
     * Returns a YDisplayLayer object that can be used to draw on the specified
     * layer. The content is displayed only when the layer is active on the
     * screen (and not masked by other overlapping layers).
     *
     * @param layerId : the identifier of the layer (a number in range 0..layerCount-1)
     *
     * @return an YDisplayLayer object
     *
     * On failure, throws an exception or returns null.
     */
    get_displayLayer(layerId: number): Promise<YDisplayLayer | null>;
    /**
     * Returns a color image with the current content of the display.
     * The image is returned as a binary object, where each byte represents a pixel,
     * from left to right and from top to bottom. The palette used to map byte
     * values to RGB colors is filled into the list provided as argument.
     * In all cases, the first palette entry (value 0) corresponds to the
     * screen default background color.
     * The image dimensions are given by the display width and height.
     *
     * @param palette : a list to be filled with the image palette
     *
     * @return a binary object if the call succeeds.
     *
     * On failure, throws an exception or returns an empty binary object.
     */
    readDisplay(palette: number[]): Promise<Uint8Array>;
    gifEncode(pixmap: Uint8Array, palette: number[], w: number, shortHdr: boolean): Promise<Uint8Array>;
    /**
     * Continues the enumeration of displays started using yFirstDisplay().
     * Caution: You can't make any assumption about the returned displays order.
     * If you want to find a specific a display, use Display.findDisplay()
     * and a hardwareID or a logical name.
     *
     * @return a pointer to a YDisplay object, corresponding to
     *         a display currently online, or a null pointer
     *         if there are no more displays to enumerate.
     */
    nextDisplay(): YDisplay | null;
    /**
     * Starts the enumeration of displays currently accessible.
     * Use the method YDisplay.nextDisplay() to iterate on
     * next displays.
     *
     * @return a pointer to a YDisplay object, corresponding to
     *         the first display currently online, or a null pointer
     *         if there are none.
     */
    static FirstDisplay(): YDisplay | null;
    /**
     * Starts the enumeration of displays currently accessible.
     * Use the method YDisplay.nextDisplay() to iterate on
     * next displays.
     *
     * @param yctx : a YAPI context.
     *
     * @return a pointer to a YDisplay object, corresponding to
     *         the first display currently online, or a null pointer
     *         if there are none.
     */
    static FirstDisplayInContext(yctx: YAPIContext): YDisplay | null;
}
export declare namespace YDisplay {
    const enum ENABLED {
        FALSE = 0,
        TRUE = 1,
        INVALID = -1
    }
    const enum ORIENTATION {
        LEFT = 0,
        UP = 1,
        RIGHT = 2,
        DOWN = 3,
        INVALID = -1
    }
    const enum DISPLAYTYPE {
        MONO = 0,
        EPAPER_BW = 1,
        EPAPER_BWR = 2,
        EPAPER_BWRY = 3,
        INVALID = -1
    }
    const enum FASTREFRESH {
        WHENEVER_POSSIBLE = 0,
        WHENEVER_SUPPORTED = 1,
        NEVER = 2,
        INVALID = 3
    }
    const enum REGENERATE {
        ON_REQUEST_ONLY = 0,
        EVERY_DAY = 1,
        EVERY_12H = 2,
        EVERY_6H = 3,
        EVERY_3H = 4,
        EVERY_2H = 5,
        EVERY_HOUR = 6,
        EVERY_30MIN = 7,
        EVERY_15MIN = 8,
        EVERY_480 = 9,
        EVERY_432 = 10,
        EVERY_360 = 11,
        EVERY_288 = 12,
        EVERY_240 = 13,
        EVERY_192 = 14,
        EVERY_144 = 15,
        EVERY_96 = 16,
        EVERY_48 = 17,
        EVERY_36 = 18,
        EVERY_24 = 19,
        EVERY_12 = 20,
        EVERY_10 = 21,
        EVERY_8 = 22,
        EVERY_6 = 23,
        EVERY_4 = 24,
        ALWAYS = 25,
        INVALID = 26
    }
    const enum DISPLAYSTATE {
        FAILURE = 0,
        OFF = 1,
        POWERING = 2,
        IDLE = 3,
        REFRESHING = 4,
        INVALID = 5
    }
    interface ValueCallback {
        (func: YDisplay, value: string): void;
    }
}
