30 lines
1.0 KiB
TypeScript
30 lines
1.0 KiB
TypeScript
import LuminanceSource from '../core/LuminanceSource';
|
|
/**
|
|
* @deprecated Moving to @zxing/browser
|
|
*/
|
|
export declare class HTMLCanvasElementLuminanceSource extends LuminanceSource {
|
|
private canvas;
|
|
private buffer;
|
|
private static DEGREE_TO_RADIANS;
|
|
private static FRAME_INDEX;
|
|
private tempCanvasElement;
|
|
constructor(canvas: HTMLCanvasElement, doAutoInvert?: boolean);
|
|
private static makeBufferFromCanvasImageData;
|
|
private static toGrayscaleBuffer;
|
|
getRow(y: number, row: Uint8ClampedArray): Uint8ClampedArray;
|
|
getMatrix(): Uint8ClampedArray;
|
|
isCropSupported(): boolean;
|
|
crop(left: number, top: number, width: number, height: number): LuminanceSource;
|
|
/**
|
|
* This is always true, since the image is a gray-scale image.
|
|
*
|
|
* @return true
|
|
*/
|
|
isRotateSupported(): boolean;
|
|
rotateCounterClockwise(): LuminanceSource;
|
|
rotateCounterClockwise45(): LuminanceSource;
|
|
private getTempCanvasElement;
|
|
private rotate;
|
|
invert(): LuminanceSource;
|
|
}
|