trtc-electron-sdk/liteav/MediaMixingDesigner/Resizable.js

trtc electron sdk

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.ResizeAnchorMode = void 0;
const logger_1 = __importDefault(require("../logger"));
var ResizeAnchorMode;
(function (ResizeAnchorMode) {
    ResizeAnchorMode[ResizeAnchorMode["Both"] = 0] = "Both";
    ResizeAnchorMode[ResizeAnchorMode["Corner"] = 1] = "Corner";
    ResizeAnchorMode[ResizeAnchorMode["Edge"] = 2] = "Edge";
})(ResizeAnchorMode = exports.ResizeAnchorMode || (exports.ResizeAnchorMode = {}));
const ResizeAnchorCSSClass = {
    topLeftAnchor: 'trtc-resizable-top-left-anchor',
    topAnchor: 'trtc-resizable-top-anchor',
    topRightAnchor: 'trtc-resizable-top-right-anchor',
    leftAnchor: 'trtc-resizable-left-anchor',
    rightAnchor: 'trtc-resizable-right-anchor',
    bottomLeftAnchor: 'trtc-resizable-bottom-left-anchor',
    bottomAnchor: 'trtc-resizable-bottom-anchor',
    bottomRightAnchor: 'trtc-resizable-bottom-right-anchor',
};
const ResizeAnchorStyle = {
    resizeAnchor: {
        position: 'absolute',
        width: '0.5rem',
        height: '0.5rem',
        border: '1px solid transparent',
        backgroundColor: 'transparent'
    },
    topLeftAnchor: {
        top: '0',
        left: '0',
        cursor: 'nw-resize'
    },
    topAnchor: {
        top: '0',
        left: 'calc(50% - 0.25rem)',
        cursor: 'n-resize'
    },
    topRightAnchor: {
        top: '0',
        right: '0',
        cursor: 'ne-resize'
    },
    leftAnchor: {
        top: 'calc(50% - 0.25rem)',
        left: '0',
        cursor: 'w-resize'
    },
    rightAnchor: {
        top: 'calc(50% - 0.25rem)',
        right: '0',
        cursor: 'e-resize'
    },
    bottomLeftAnchor: {
        bottom: '0',
        left: '0',
        cursor: 'sw-resize'
    },
    bottomAnchor: {
        bottom: '0',
        left: 'calc(50% - 0.25rem)',
        cursor: 's-resize'
    },
    bottomRightAnchor: {
        bottom: '0',
        right: '0',
        cursor: 'se-resize'
    }
};
function setElementStyle(el, styleOptions) {
    for (const key in styleOptions) {
        el.style[key] = styleOptions[key];
    }
}
class Resizable {
    constructor(resizeTarget, container, options = {
        keepRatio: false,
        stopPropagation: false,
        anchorMode: ResizeAnchorMode.Both,
        canExceedContainer: false
    }) {
        this.logPrefix = '[Resizable]';
        this.container = null;
        this.options = {
            keepRatio: false,
            stopPropagation: false,
            anchorMode: ResizeAnchorMode.Both,
            canExceedContainer: false
        };
        this.callbacksMap = new Map();
        this.topLeftAnchor = null;
        this.topAnchor = null;
        this.topRightAnchor = null;
        this.leftAnchor = null;
        this.rightAnchor = null;
        this.bottomLeftAnchor = null;
        this.bottomAnchor = null;
        this.bottomRightAnchor = null;
        this.currentAnchor = null;
        this.resizeStartLeft = 0;
        this.resizeStartTop = 0;
        this.originLeft = 0;
        this.originTop = 0;
        this.originWidth = 0;
        this.originHeight = 0;
        this.resizeTarget = resizeTarget;
        this.container = container || document.body;
        this.options = {
            keepRatio: !!options.keepRatio || false,
            stopPropagation: !!options.stopPropagation || false,
            anchorMode: options.anchorMode || ResizeAnchorMode.Both,
            canExceedContainer: !!options.canExceedContainer || false
        };
        this.mousedown = this.mousedown.bind(this);
        this.mousemove = this.mousemove.bind(this);
        this.mouseup = this.mouseup.bind(this);
        this.currentAnchor = null;
        this.createResizeAnchor();
        this.resizeTarget.classList.add("trtc-resizable");
        this.resizeTarget.style.position = 'absolute';
        this.resizeTarget.style.overflow = 'hidden';
        this.initResizeEvent();
    }
    createResizeAnchor() {
        var _a, _b, _c, _d, _e, _f, _g, _h;
        const topLeftAnchor = document.createElement("div");
        topLeftAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.topLeftAnchor}`;
        setElementStyle(topLeftAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.topLeftAnchor));
        this.topLeftAnchor = topLeftAnchor;
        const topAnchor = document.createElement("div");
        topAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.topAnchor}`;
        setElementStyle(topAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.topAnchor));
        this.topAnchor = topAnchor;
        const topRightAnchor = document.createElement("div");
        topRightAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.topRightAnchor}`;
        setElementStyle(topRightAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.topRightAnchor));
        this.topRightAnchor = topRightAnchor;
        const leftAnchor = document.createElement("div");
        leftAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.leftAnchor}`;
        setElementStyle(leftAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.leftAnchor));
        this.leftAnchor = leftAnchor;
        const rightAnchor = document.createElement("div");
        rightAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.rightAnchor}`;
        setElementStyle(rightAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.rightAnchor));
        this.rightAnchor = rightAnchor;
        const bottomLeftAnchor = document.createElement("div");
        bottomLeftAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.bottomLeftAnchor}`;
        setElementStyle(bottomLeftAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.bottomLeftAnchor));
        this.bottomLeftAnchor = bottomLeftAnchor;
        const bottomAnchor = document.createElement("div");
        bottomAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.bottomAnchor}`;
        setElementStyle(bottomAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.bottomAnchor));
        this.bottomAnchor = bottomAnchor;
        const bottomRightAnchor = document.createElement("div");
        bottomRightAnchor.className = `trtc-resizable-resize-anchor ${ResizeAnchorCSSClass.bottomRightAnchor}`;
        setElementStyle(bottomRightAnchor, Object.assign({}, ResizeAnchorStyle.resizeAnchor, ResizeAnchorStyle.bottomRightAnchor));
        this.bottomRightAnchor = bottomRightAnchor;
        if (this.options.anchorMode === ResizeAnchorMode.Both || this.options.anchorMode === ResizeAnchorMode.Edge) {
            (_a = this.resizeTarget) === null || _a === void 0 ? void 0 : _a.appendChild(topAnchor);
            (_b = this.resizeTarget) === null || _b === void 0 ? void 0 : _b.appendChild(leftAnchor);
            (_c = this.resizeTarget) === null || _c === void 0 ? void 0 : _c.appendChild(rightAnchor);
            (_d = this.resizeTarget) === null || _d === void 0 ? void 0 : _d.appendChild(bottomAnchor);
        }
        if (this.options.anchorMode === ResizeAnchorMode.Both || this.options.anchorMode === ResizeAnchorMode.Corner) {
            (_e = this.resizeTarget) === null || _e === void 0 ? void 0 : _e.appendChild(topLeftAnchor);
            (_f = this.resizeTarget) === null || _f === void 0 ? void 0 : _f.appendChild(topRightAnchor);
            (_g = this.resizeTarget) === null || _g === void 0 ? void 0 : _g.appendChild(bottomLeftAnchor);
            (_h = this.resizeTarget) === null || _h === void 0 ? void 0 : _h.appendChild(bottomRightAnchor);
        }
    }
    initResizeEvent() {
        var _a, _b, _c, _d, _e, _f, _g, _h;
        (_a = this.topLeftAnchor) === null || _a === void 0 ? void 0 : _a.addEventListener("mousedown", this.mousedown, false);
        (_b = this.topAnchor) === null || _b === void 0 ? void 0 : _b.addEventListener("mousedown", this.mousedown, false);
        (_c = this.topRightAnchor) === null || _c === void 0 ? void 0 : _c.addEventListener("mousedown", this.mousedown, false);
        (_d = this.leftAnchor) === null || _d === void 0 ? void 0 : _d.addEventListener("mousedown", this.mousedown, false);
        (_e = this.rightAnchor) === null || _e === void 0 ? void 0 : _e.addEventListener("mousedown", this.mousedown, false);
        (_f = this.bottomLeftAnchor) === null || _f === void 0 ? void 0 : _f.addEventListener("mousedown", this.mousedown, false);
        (_g = this.bottomAnchor) === null || _g === void 0 ? void 0 : _g.addEventListener("mousedown", this.mousedown, false);
        (_h = this.bottomRightAnchor) === null || _h === void 0 ? void 0 : _h.addEventListener("mousedown", this.mousedown, false);
    }
    mousedown(event) {
        if (event.button !== 0) {
            return;
        }
        event.preventDefault(); // Avoid select text content.
        if (this.options.stopPropagation) {
            event.stopPropagation();
        }
        this.currentAnchor = event.target;
        this.resizeStartLeft = event.screenX;
        this.resizeStartTop = event.screenY;
        if (document.defaultView && this.resizeTarget) {
            const resizeTargetStyle = document.defaultView.getComputedStyle(this.resizeTarget);
            this.originTop = window.parseInt(resizeTargetStyle.top);
            this.originLeft = window.parseInt(resizeTargetStyle.left);
            this.originWidth = this.resizeTarget.offsetWidth;
            this.originHeight = this.resizeTarget.offsetHeight;
            logger_1.default.debug("resize origin:", this.originTop, this.originLeft, this.originWidth, this.originHeight);
        }
        else {
            logger_1.default.error(`${this.logPrefix}mouseDown 'resizeTarget' is null`);
        }
        document.addEventListener("mousemove", this.mousemove, false);
        document.addEventListener("mouseup", this.mouseup, false);
    }
    mousemove(event) {
        if (!this.container || !this.resizeTarget || !this.currentAnchor) {
            logger_1.default.error(`${this.logPrefix}mouseMove error. No valid inner info:`, this.container, this.resizeTarget, this.currentAnchor);
            return;
        }
        const anchorType = this.currentAnchor.classList[1];
        let left = this.originLeft, top = this.originTop, width = this.originWidth, height = this.originHeight;
        let result;
        switch (anchorType) {
            case ResizeAnchorCSSClass.topLeftAnchor:
                result = this._resizeTop(event);
                top = result.top;
                height = result.height;
                result = this._resizeLeft(event);
                left = result.left;
                width = result.width;
                if (this.options.keepRatio) {
                    if (width / this.originWidth < height / this.originHeight) {
                        // 宽度缩放比例小于高度缩放比例，保持当前宽度，调整高度
                        height = (width * this.originHeight) / this.originWidth;
                        // 需要调整 y 坐标
                        top = this.originTop + this.originHeight - height;
                    }
                    else {
                        // 高度缩放比例小于宽度缩放比例，保持当前高度，调整宽度
                        width = (height * this.originWidth) / this.originHeight;
                        // 需要调整 x 坐标
                        left = this.originLeft + this.originWidth - width;
                    }
                }
                break;
            case ResizeAnchorCSSClass.topAnchor:
                result = this._resizeTop(event);
                top = result.top;
                height = result.height;
                if (this.options.keepRatio) {
                    width = this.originWidth * height / this.originHeight;
                    if (width < 20) {
                        width = 20;
                        height = this.originHeight * width / this.originWidth;
                        top = this.originTop + this.originHeight - height;
                    }
                    else if (!this.options.canExceedContainer && width > this.container.offsetWidth - this.originLeft) {
                        width = this.container.offsetWidth - this.originLeft;
                        height = this.originHeight * width / this.originWidth;
                        top = this.originTop + this.originHeight - height;
                    }
                }
                break;
            case ResizeAnchorCSSClass.topRightAnchor:
                result = this._resizeTop(event);
                top = result.top;
                height = result.height;
                width = this._resizeRight(event);
                if (this.options.keepRatio) {
                    if (width / this.originWidth < height / this.originHeight) {
                        height = (width * this.originHeight) / this.originWidth;
                        top = this.originTop + this.originHeight - height;
                    }
                    else {
                        width = (height * this.originWidth) / this.originHeight;
                    }
                }
                break;
            case ResizeAnchorCSSClass.leftAnchor:
                result = this._resizeLeft(event);
                left = result.left;
                width = result.width;
                if (this.options.keepRatio) {
                    height = this.originHeight * width / this.originWidth;
                    if (height < 20) {
                        height = 20;
                        width = this.originWidth * height / this.originHeight;
                        left = this.originLeft + this.originWidth - width;
                    }
                    else if (!this.options.canExceedContainer && height > this.container.offsetHeight - this.originTop) {
                        height = this.container.offsetHeight - this.originTop;
                        width = this.originWidth * height / this.originHeight;
                        left = this.originLeft + this.originWidth - width;
                    }
                }
                break;
            case ResizeAnchorCSSClass.rightAnchor:
                width = this._resizeRight(event);
                if (this.options.keepRatio) {
                    height = (width * this.originHeight) / this.originWidth;
                    if (height < 20) {
                        height = 20;
                        width = height * this.originWidth / this.originHeight;
                    }
                    else if (!this.options.canExceedContainer && height > this.container.offsetHeight - this.originTop) {
                        height = this.container.offsetHeight - this.originTop;
                        width = height * this.originWidth / this.originHeight;
                    }
                }
                break;
            case ResizeAnchorCSSClass.bottomLeftAnchor:
                height = this._resizeBottom(event);
                result = this._resizeLeft(event);
                left = result.left;
                width = result.width;
                if (this.options.keepRatio) {
                    if (width / this.originWidth < height / this.originHeight) {
                        height = (width * this.originHeight) / this.originWidth;
                    }
                    else {
                        width = (height * this.originWidth) / this.originHeight;
                        left = this.originLeft + this.originWidth - width;
                    }
                }
                break;
            case ResizeAnchorCSSClass.bottomAnchor:
                height = this._resizeBottom(event);
                if (this.options.keepRatio) {
                    width = (height * this.originWidth) / this.originHeight;
                    if (width < 20) {
                        width = 20;
                        height = width * this.originHeight / this.originWidth;
                    }
                    else if (!this.options.canExceedContainer && width > this.container.offsetWidth - this.originLeft) {
                        width = this.container.offsetWidth - this.originLeft;
                        height = width * this.originHeight / this.originWidth;
                    }
                }
                break;
            case ResizeAnchorCSSClass.bottomRightAnchor:
                height = this._resizeBottom(event);
                width = this._resizeRight(event);
                if (this.options.keepRatio) {
                    if (width / this.originWidth < height / this.originHeight) {
                        height = (width * this.originHeight) / this.originWidth;
                    }
                    else {
                        width = (height * this.originWidth) / this.originHeight;
                    }
                }
                break;
        }
        this.resizeTarget.style.left = left + "px";
        this.resizeTarget.style.top = top + "px";
        this.resizeTarget.style.height = height + "px";
        this.resizeTarget.style.width = width + "px";
        this.emit("resize", left, top, width, height);
    }
    _resizeLeft(event) {
        const leftResizedDistance = event.screenX - this.resizeStartLeft;
        let left = this.originLeft + leftResizedDistance;
        let width = this.originWidth - leftResizedDistance;
        if (!this.options.canExceedContainer && left < 0) {
            left = 0;
            width = this.originWidth + this.originLeft;
        }
        else if (left > this.originLeft + this.originWidth - 20) {
            left = this.originLeft + this.originWidth - 20;
            width = 20; // 最小宽度
        }
        return {
            left,
            width,
        };
    }
    _resizeTop(event) {
        const topResizedDistance = event.screenY - this.resizeStartTop;
        let top = this.originTop + topResizedDistance;
        let height = this.originHeight - topResizedDistance;
        if (!this.options.canExceedContainer && top < 0) {
            top = 0;
            height = this.originHeight + this.originTop;
        }
        else if (top > this.originTop + this.originHeight - 20) {
            top = this.originTop + this.originHeight - 20;
            height = 20; // 最小高度
        }
        return {
            top,
            height,
        };
    }
    _resizeRight(event) {
        if (!this.container) {
            logger_1.default.error(`${this.logPrefix}_resizeRight error. No container:`, this.container);
            return 0;
        }
        const leftResizedDistance = event.screenX - this.resizeStartLeft;
        let width = this.originWidth + leftResizedDistance;
        if (width < 20) {
            width = 20; // 最小宽度
        }
        else if (!this.options.canExceedContainer && width > this.container.offsetWidth - this.originLeft) {
            width = this.container.offsetWidth - this.originLeft;
        }
        return width;
    }
    _resizeBottom(event) {
        if (!this.container) {
            logger_1.default.error(`${this.logPrefix}_resizeBottom error. No container:`, this.container);
            return 0;
        }
        const topResizedDistance = event.screenY - this.resizeStartTop;
        let height = this.originHeight + topResizedDistance;
        if (height < 20) {
            height = 20; // 最小高度
        }
        else if (!this.options.canExceedContainer && height > this.container.offsetHeight - this.originTop) {
            height = this.container.offsetHeight - this.originTop;
        }
        return height;
    }
    mouseup() {
        document.removeEventListener("mousemove", this.mousemove, false);
        document.removeEventListener("mouseup", this.mouseup, false);
        this.currentAnchor = null;
        this.resizeStartLeft = 0;
        this.resizeStartTop = 0;
        this.originLeft = 0;
        this.originTop = 0;
        this.originWidth = 0;
        this.originHeight = 0;
    }
    on(eventName, callback) {
        const callbacks = this.callbacksMap.get(eventName);
        if (callbacks) {
            callbacks.push(callback);
        }
        else {
            this.callbacksMap.set(eventName, [callback]);
        }
    }
    off(eventName, callback) {
        let callbacks = this.callbacksMap.get(eventName);
        if (callbacks) {
            callbacks = callbacks.filter((item) => item != callback);
            this.callbacksMap.set(eventName, callbacks);
        }
    }
    emit(eventName, ...arg) {
        const callbacks = this.callbacksMap.get(eventName);
        if (callbacks) {
            const callbacksClone = callbacks.slice();
            callbacksClone.forEach((callback) => {
                try {
                    callback.apply(null, arg); // arg must be array
                }
                catch (error) {
                    console.error("[Resizable]emit error:", callback, error);
                }
            });
        }
    }
    destroy() {
        var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q, _r;
        (_a = this.topLeftAnchor) === null || _a === void 0 ? void 0 : _a.removeEventListener("mousedown", this.mousedown, false);
        (_b = this.topAnchor) === null || _b === void 0 ? void 0 : _b.removeEventListener("mousedown", this.mousedown, false);
        (_c = this.topRightAnchor) === null || _c === void 0 ? void 0 : _c.removeEventListener("mousedown", this.mousedown, false);
        (_d = this.leftAnchor) === null || _d === void 0 ? void 0 : _d.removeEventListener("mousedown", this.mousedown, false);
        (_e = this.rightAnchor) === null || _e === void 0 ? void 0 : _e.removeEventListener("mousedown", this.mousedown, false);
        (_f = this.bottomLeftAnchor) === null || _f === void 0 ? void 0 : _f.removeEventListener("mousedown", this.mousedown, false);
        (_g = this.bottomAnchor) === null || _g === void 0 ? void 0 : _g.removeEventListener("mousedown", this.mousedown, false);
        (_h = this.bottomRightAnchor) === null || _h === void 0 ? void 0 : _h.removeEventListener("mousedown", this.mousedown, false);
        this.callbacksMap.clear();
        if (this.options.anchorMode === ResizeAnchorMode.Both || this.options.anchorMode === ResizeAnchorMode.Edge) {
            this.topAnchor && ((_j = this.resizeTarget) === null || _j === void 0 ? void 0 : _j.removeChild(this.topAnchor));
            this.leftAnchor && ((_k = this.resizeTarget) === null || _k === void 0 ? void 0 : _k.removeChild(this.leftAnchor));
            this.rightAnchor && ((_l = this.resizeTarget) === null || _l === void 0 ? void 0 : _l.removeChild(this.rightAnchor));
            this.bottomAnchor && ((_m = this.resizeTarget) === null || _m === void 0 ? void 0 : _m.removeChild(this.bottomAnchor));
        }
        if (this.options.anchorMode === ResizeAnchorMode.Both || this.options.anchorMode === ResizeAnchorMode.Corner) {
            this.topLeftAnchor && ((_o = this.resizeTarget) === null || _o === void 0 ? void 0 : _o.removeChild(this.topLeftAnchor));
            this.topRightAnchor && ((_p = this.resizeTarget) === null || _p === void 0 ? void 0 : _p.removeChild(this.topRightAnchor));
            this.bottomLeftAnchor && ((_q = this.resizeTarget) === null || _q === void 0 ? void 0 : _q.removeChild(this.bottomLeftAnchor));
            this.bottomRightAnchor && ((_r = this.resizeTarget) === null || _r === void 0 ? void 0 : _r.removeChild(this.bottomRightAnchor));
        }
        this.topLeftAnchor = null;
        this.topAnchor = null;
        this.topRightAnchor = null;
        this.leftAnchor = null;
        this.rightAnchor = null;
        this.bottomLeftAnchor = null;
        this.bottomAnchor = null;
        this.bottomRightAnchor = null;
        this.resizeTarget = null;
        this.container = null;
        this.currentAnchor = null;
        this.resizeStartLeft = 0;
        this.resizeStartTop = 0;
        this.originLeft = 0;
        this.originTop = 0;
        this.originWidth = 0;
        this.originHeight = 0;
    }
}
exports.default = Resizable;