import Controller from './Controller';

export default class Rect extends Controller {
    constructor(appState) {
        super(appState);
        this.begin = null;
    }
    down(x, y) {
        this.begin = {x, y};
        this.state.pixelEditor.pushState();
        this.state.pixelEditor.drawPixel(x, y);
    }
    move(x, y) {
        if (this.begin) {
            const x0 = x > this.begin.x ? this.begin.x : x;
            const y0 = y > this.begin.y ? this.begin.y : y;
            const w = Math.abs(x - this.begin.x) + 1;
            const h = Math.abs(y - this.begin.y) + 1;

            this.state.pixelEditor.resetState();
            this.state.pixelEditor.setHLine(x0, this.begin.y, w);
            this.state.pixelEditor.setHLine(x0, y, w);
            this.state.pixelEditor.setVLine(this.begin.x, y0 + 1, h - 2);
            this.state.pixelEditor.setVLine(x, y0 + 1, h - 2);
            this.state.pixelEditor.redraw();
            this.state.pixelEditor.refresh();
        }
    }
    up(x, y) {
        this.begin = null;
    }
}