remotion/dist/cjs/animated-image/canvas.js

Make videos programmatically

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || (function () {
    var ownKeys = function(o) {
        ownKeys = Object.getOwnPropertyNames || function (o) {
            var ar = [];
            for (var k in o) if (Object.prototype.hasOwnProperty.call(o, k)) ar[ar.length] = k;
            return ar;
        };
        return ownKeys(o);
    };
    return function (mod) {
        if (mod && mod.__esModule) return mod;
        var result = {};
        if (mod != null) for (var k = ownKeys(mod), i = 0; i < k.length; i++) if (k[i] !== "default") __createBinding(result, mod, k[i]);
        __setModuleDefault(result, mod);
        return result;
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
exports.Canvas = void 0;
const jsx_runtime_1 = require("react/jsx-runtime");
const react_1 = __importStar(require("react"));
const calculate_image_fit_js_1 = require("../calculate-image-fit.js");
const run_effect_chain_js_1 = require("../effects/run-effect-chain.js");
const use_effect_chain_state_js_1 = require("../effects/use-effect-chain-state.js");
const CanvasRefForwardingFunction = ({ width, height, fit, className, style, effects }, ref) => {
    const canvasRef = (0, react_1.useRef)(null);
    const chainState = (0, use_effect_chain_state_js_1.useEffectChainState)();
    const sourceCanvas = (0, react_1.useMemo)(() => {
        if (typeof document === 'undefined') {
            return null;
        }
        return document.createElement('canvas');
    }, []);
    const draw = (0, react_1.useCallback)((imageData) => {
        const canvas = canvasRef.current;
        const canvasWidth = width !== null && width !== void 0 ? width : imageData.displayWidth;
        const canvasHeight = height !== null && height !== void 0 ? height : imageData.displayHeight;
        if (!canvas) {
            throw new Error('Canvas ref is not set');
        }
        if (!sourceCanvas) {
            throw new Error('Source canvas is not available');
        }
        sourceCanvas.width = canvasWidth;
        sourceCanvas.height = canvasHeight;
        const sourceCtx = sourceCanvas.getContext('2d');
        if (!sourceCtx) {
            throw new Error('Could not get 2d context for source canvas');
        }
        sourceCtx.drawImage(imageData, ...(0, calculate_image_fit_js_1.calculateImageFit)(fit, {
            height: imageData.displayHeight,
            width: imageData.displayWidth,
        }, {
            width: canvasWidth,
            height: canvasHeight,
        }));
        canvas.width = canvasWidth;
        canvas.height = canvasHeight;
        return (0, run_effect_chain_js_1.runEffectChain)({
            state: chainState.get(canvasWidth, canvasHeight),
            source: sourceCanvas,
            effects,
            output: canvas,
            width: canvasWidth,
            height: canvasHeight,
        });
    }, [chainState, effects, fit, height, sourceCanvas, width]);
    (0, react_1.useImperativeHandle)(ref, () => {
        return {
            draw,
            getCanvas: () => {
                if (!canvasRef.current) {
                    throw new Error('Canvas ref is not set');
                }
                return canvasRef.current;
            },
            clear: () => {
                var _a;
                const ctx = (_a = canvasRef.current) === null || _a === void 0 ? void 0 : _a.getContext('2d');
                if (!ctx) {
                    throw new Error('Could not get 2d context');
                }
                ctx.clearRect(0, 0, canvasRef.current.width, canvasRef.current.height);
            },
        };
    }, [draw]);
    return (0, jsx_runtime_1.jsx)("canvas", { ref: canvasRef, className: className, style: style });
};
exports.Canvas = react_1.default.forwardRef(CanvasRefForwardingFunction);