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Pull common parts into BaseRenderLayer

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Daniel Imms
2017-08-31 17:13:15 -07:00
parent fd18f7cba7
commit a91380a76f
7 changed files with 47 additions and 64 deletions
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src/renderer/SelectionRenderLayer.ts
+4 -16
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@@ -3,31 +3,19 @@ import { IBuffer, ICharMeasure, ITerminal } from '../Interfaces';
import { CHAR_DATA_ATTR_INDEX } from '../Buffer';
import { GridCache } from './GridCache';
import { FLAGS } from './Types';
import { BaseRenderLayer } from './BaseRenderLayer';
export class SelectionRenderLayer implements ISelectionRenderLayer {
private _canvas: HTMLCanvasElement;
private _ctx: CanvasRenderingContext2D;
export class SelectionRenderLayer extends BaseRenderLayer implements ISelectionRenderLayer {
private _state: {start: [number, number], end: [number, number]};
constructor(container: HTMLElement) {
this._canvas = document.createElement('canvas');
this._canvas.classList.add('xterm-selection-layer');
this._ctx = this._canvas.getContext('2d');
this._ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
container.appendChild(this._canvas);
constructor(container: HTMLElement, zIndex: number) {
super(container, 'selection', zIndex);
this._state = {
start: null,
end: null
};
}
public resize(terminal: ITerminal, canvasWidth: number, canvasHeight: number, charSizeChanged: boolean): void {
this._canvas.width = canvasWidth * window.devicePixelRatio;
this._canvas.height = canvasHeight * window.devicePixelRatio;
this._canvas.style.width = `${canvasWidth}px`;
this._canvas.style.height = `${canvasHeight}px`;
}
public render(terminal: ITerminal, start: [number, number], end: [number, number]): void {
const scaledCharWidth = Math.ceil(terminal.charMeasure.width) * window.devicePixelRatio;
const scaledCharHeight = Math.ceil(terminal.charMeasure.height) * window.devicePixelRatio;