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Page.ts
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Page.ts
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import { Render } from '../Render/Render';
import { Point } from '../BasicTypes';
/**
* State of the page on the basis of which rendering
*/
export interface PageState {
/** Page rotation angle */
angle: number;
/** Page scope */
area: Point[];
/** Page position */
position: Point;
/** Rotate angle for hard pages */
hardDrawingAngle: number;
}
export const enum PageOrientation {
/** Left side page */
LEFT,
/** Right side page */
RIGHT,
}
export const enum PageDensity {
SOFT = 'soft',
HARD = 'hard',
}
/**
* Class representing a book page
*/
export abstract class Page {
/** State of the page on the basis of which rendering */
protected state: PageState;
/** Render object */
protected render: Render;
/** Page Orientation */
protected orientation: PageOrientation;
/** Density at creation */
protected createdDensity: PageDensity;
/** Density at the time of rendering (Depends on neighboring pages) */
protected nowDrawingDensity: PageDensity;
protected constructor(render: Render, density: PageDensity) {
this.state = {
angle: 0,
area: [],
position: { x: 0, y: 0 },
hardDrawingAngle: 0,
};
this.createdDensity = density;
this.nowDrawingDensity = this.createdDensity;
this.render = render;
}
/**
* Render static page
*
* @param {PageOrientation} orient - Static page orientation
*/
public abstract simpleDraw(orient: PageOrientation): void;
/**
* Render dynamic page, using state
*
* @param {PageDensity} tempDensity - Density at the time of rendering
*/
public abstract draw(tempDensity?: PageDensity): void;
/**
* Page loading
*/
public abstract load(): void;
/**
* Set a constant page density
*
* @param {PageDensity} density
*/
public setDensity(density: PageDensity): void {
this.createdDensity = density;
this.nowDrawingDensity = density;
}
/**
* Set temp page density to next render
*
* @param {PageDensity} density
*/
public setDrawingDensity(density: PageDensity): void {
this.nowDrawingDensity = density;
}
/**
* Set page position
*
* @param {Point} pagePos
*/
public setPosition(pagePos: Point): void {
this.state.position = pagePos;
}
/**
* Set page angle
*
* @param {number} angle
*/
public setAngle(angle: number): void {
this.state.angle = angle;
}
/**
* Set page crop area
*
* @param {Point[]} area
*/
public setArea(area: Point[]): void {
this.state.area = area;
}
/**
* Rotate angle for hard pages
*
* @param {number} angle
*/
public setHardDrawingAngle(angle: number): void {
this.state.hardDrawingAngle = angle;
}
/**
* Set page orientation
*
* @param {PageOrientation} orientation
*/
public setOrientation(orientation: PageOrientation): void {
this.orientation = orientation;
}
/**
* Get temp page density
*/
public getDrawingDensity(): PageDensity {
return this.nowDrawingDensity;
}
/**
* Get a constant page density
*/
public getDensity(): PageDensity {
return this.createdDensity;
}
/**
* Get rotate angle for hard pages
*/
public getHardDrawingAngle(): number {
return this.state.hardDrawingAngle;
}
}