react-native-canvas
Version:
A Canvas component for React Native
236 lines (235 loc) • 12.3 kB
JavaScript
;
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Object.defineProperty(exports, "__esModule", { value: true });
exports.Path2D = exports.ImageData = exports.Image = void 0;
var jsx_runtime_1 = require("react/jsx-runtime");
var react_1 = require("react");
var react_native_1 = require("react-native");
var react_native_webview_1 = require("react-native-webview");
var Bus_1 = require("./Bus");
var webview_binders_1 = require("./webview-binders");
var CanvasRenderingContext2D_1 = require("./CanvasRenderingContext2D");
var index_html_js_1 = require("./index.html.js");
var Image_1 = require("./Image");
Object.defineProperty(exports, "Image", { enumerable: true, get: function () { return Image_1.default; } });
var ImageData_1 = require("./ImageData");
Object.defineProperty(exports, "ImageData", { enumerable: true, get: function () { return ImageData_1.default; } });
var Path2D_1 = require("./Path2D");
Object.defineProperty(exports, "Path2D", { enumerable: true, get: function () { return Path2D_1.default; } });
require("./CanvasGradient");
var stylesheet = react_native_1.StyleSheet.create({
container: { overflow: "hidden", flex: 0 },
webview: {
overflow: "hidden",
backgroundColor: "transparent",
flex: 0,
},
webviewAndroid9: {
overflow: "hidden",
backgroundColor: "transparent",
flex: 0,
opacity: 0.99,
},
});
var Canvas = /** @class */ (function (_super) {
__extends(Canvas, _super);
function Canvas() {
var _this = _super.call(this) || this;
_this.state = {
isLoaded: false,
};
_this.addMessageListener = function (listener) {
_this.listeners.push(listener);
return function () { return _this.removeMessageListener(listener); };
};
_this.removeMessageListener = function (listener) {
_this.listeners.splice(_this.listeners.indexOf(listener), 1);
};
/**
* in the mounting process this.webview can be set to null
*/
_this.webviewPostMessage = function (message) {
if (_this.webview) {
_this.webview.postMessage(JSON.stringify(message));
}
};
_this.bus = new Bus_1.default(_this.webviewPostMessage);
_this.listeners = [];
_this.context2D = new CanvasRenderingContext2D_1.default(_this);
_this.getContext = function (contextType, contextAttributes) {
switch (contextType) {
case "2d": {
return _this.context2D;
}
}
return null;
};
_this.postMessage = function (message) { return __awaiter(_this, void 0, void 0, function () {
var stack, _a, type, payload, error;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
stack = new Error().stack;
return [4 /*yield*/, this.bus.post(__assign({ id: Math.random() }, message))];
case 1:
_a = _b.sent(), type = _a.type, payload = _a.payload;
switch (type) {
case "error": {
error = new Error(payload.message);
error.stack = stack;
throw error;
}
case "json": {
return [2 /*return*/, payload];
}
case "blob": {
return [2 /*return*/, atob(payload)];
}
}
return [2 /*return*/];
}
});
}); };
_this.handleMessage = function (e) {
var _a;
var data = JSON.parse(e.nativeEvent.data);
switch (data.type) {
case "log": {
// eslint-disable-line no-console
console.log.apply(console, data.payload);
break;
}
case "error": {
throw new Error(data.payload.message);
}
default: {
if (data.payload) {
var constructor = webview_binders_1.constructors[data.meta.constructor];
if (constructor) {
var args = data.args, payload = data.payload;
var object = constructor.constructLocally.apply(constructor, __spreadArray([_this], args, false));
Object.assign(object, payload, (_a = {},
_a[webview_binders_1.WEBVIEW_TARGET] = data.meta.target,
_a));
data = __assign(__assign({}, data), { payload: object });
}
for (var _i = 0, _b = _this.listeners; _i < _b.length; _i++) {
var listener = _b[_i];
listener(data.payload);
}
}
_this.bus.handle(data);
}
}
};
_this.handleRef = function (element) {
_this.webview = element;
};
_this.handleLoad = function () {
_this.setState({ isLoaded: true });
_this.bus.resume();
};
_this.bus.pause();
return _this;
}
Canvas.prototype.render = function () {
var _a = this, width = _a.width, height = _a.height;
var _b = this.props, style = _b.style, _c = _b.baseUrl, baseUrl = _c === void 0 ? "" : _c, _d = _b.originWhitelist, originWhitelist = _d === void 0 ? ["*"] : _d;
var isLoaded = this.state.isLoaded;
if (react_native_1.Platform.OS === "android") {
var isAndroid9 = react_native_1.Platform.Version >= 28;
return ((0, jsx_runtime_1.jsx)(react_native_1.View, { style: [stylesheet.container, { width: width, height: height }, style], children: (0, jsx_runtime_1.jsx)(react_native_webview_1.WebView, { ref: this.handleRef, style: [
isAndroid9 ? stylesheet.webviewAndroid9 : stylesheet.webview,
{ height: height, width: width },
], source: { html: index_html_js_1.default, baseUrl: baseUrl }, originWhitelist: originWhitelist, onMessage: this.handleMessage, onLoad: this.handleLoad, overScrollMode: "never", mixedContentMode: "always", scalesPageToFit: false, javaScriptEnabled: true, domStorageEnabled: true, thirdPartyCookiesEnabled: true, allowUniversalAccessFromFileURLs: true }) }));
}
return ((0, jsx_runtime_1.jsx)(react_native_1.View, { style: [
stylesheet.container,
{ width: width, height: height, opacity: isLoaded ? 1 : 0 },
style,
], children: (0, jsx_runtime_1.jsx)(react_native_webview_1.WebView, { ref: this.handleRef, style: [stylesheet.webview, { height: height, width: width }], source: { html: index_html_js_1.default, baseUrl: baseUrl }, originWhitelist: originWhitelist, onMessage: this.handleMessage, onLoad: this.handleLoad, scrollEnabled: false }) }));
};
Canvas = __decorate([
(0, webview_binders_1.webviewTarget)("canvas"),
(0, webview_binders_1.webviewProperties)({ width: 300, height: 150 }),
(0, webview_binders_1.webviewMethods)(["toDataURL"])
], Canvas);
return Canvas;
}(react_1.Component));
exports.default = Canvas;