鼠标

例子

基本用法

examples/unit/mouse-event/event-basic.ts

这个例子演示了对以下事件的处理：

• Enter & Leave
• Press & Release
• Move
• Hover

function formatMessagePointer(m: MessagePointer) {    return `pos: (${m.Position.x}, ${m.Position.y})`;}
export function main(window: Window) {    const button = new Button(window);    let entered = false;    let pos = Vec2.Zero;
    const updateButton = () =>        button.SetText(`${entered ? `at ${pos.x}, ${pos.y}` : 'out'}`);
    updateButton();
    //    button.OnPointerEnter((sender, mp) => {        entered = true;        updateButton();    });    button.OnPointerLeave((sender, mp) => {        entered = false;        updateButton();    });
    //    button.OnPointerPress((sender, mp) => {        console.log(`on press: ${formatMessagePointer(mp)}`);    });    button.OnPointerRelease((sender, mp) => {        console.log(`on release: ${formatMessagePointer(mp)}`);    });
    //    button.OnPointerMove((sender, mp) => {        pos = mp.Position;        updateButton();    });    button.OnPointerHover((sender, mp) => {        console.log('on hover');    });
    const container = getControlDemoContainer(window);    container.ControlAdd(button).SetGrid(1, 1);    window.SetContent(container);}

API

export interface IControl extends IControlExtension {    //    OnPointerEnter(        fn: (sender: IControl, mp: MessagePointer) => void,    ): IControl;    OnPointerLeave(        fn: (sender: IControl, mp: MessagePointer) => void,    ): IControl;
    //    OnPointerPress(        fn: (sender: IControl, mp: MessagePointer) => void,    ): IControl;    OnPointerRelease(        fn: (sender: IControl, mp: MessagePointer) => void,    ): IControl;
    //    OnPointerMove(fn: (sender: IControl, mp: MessagePointer) => void): IControl;    OnPointerHover(        fn: (sender: IControl, mp: MessagePointer) => void,    ): IControl;}
export class MessagePointer {    // Common    Id: number;    Type: PointerType;    Position: Vec2;    Modifier: InputModifier;    Button: PointerButton;    Count: number;
    ...}