@jianghh/canvas-graffiti
Version:
canvas涂鸦库，支持手写、笔写、鼠标，选中元素，并且移动、删除等功能。集成撤销重做操作。
16 lines (15 loc) • 616 B
JavaScript
const e = {
buffer: !0,
pointerdown({ offsetX: t, offsetY: i }) {
this.bufferCtx.moveTo(t, i);
},
pointermove({ offsetX: t, offsetY: i }) {
this.bufferCtx.clearRect(0, 0, this.el.width, this.el.height), this.bufferCtx.beginPath(), this.bufferCtx.moveTo(this.beginPoint.x, this.beginPoint.y), this.bufferCtx.lineTo(t, i), this.endPoint = { x: t, y: i }, this.bufferCtx.stroke();
},
pointerup() {
this.endPoint && (this.ctx.beginPath(), this.ctx.moveTo(this.beginPoint.x, this.beginPoint.y), this.ctx.lineTo(this.endPoint.x, this.endPoint.y), this.ctx.stroke());
}
};
export {
e as Line
};