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node_modules/pdf-lib/cjs/api/form/PDFCheckBox.js
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node_modules/pdf-lib/cjs/api/form/PDFCheckBox.js
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var tslib_1 = require("tslib");
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var PDFPage_1 = tslib_1.__importDefault(require("../PDFPage"));
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var appearances_1 = require("./appearances");
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var colors_1 = require("../colors");
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var rotations_1 = require("../rotations");
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var PDFField_1 = tslib_1.__importStar(require("./PDFField"));
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var core_1 = require("../../core");
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var utils_1 = require("../../utils");
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/**
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* Represents a check box field of a [[PDFForm]].
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*
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* [[PDFCheckBox]] fields are interactive boxes that users can click with their
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* mouse. This type of [[PDFField]] has two states: `on` and `off`. The purpose
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* of a check box is to enable users to select from one or more options, where
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* each option is represented by a single check box. Check boxes are typically
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* square in shape and display a check mark when they are in the `on` state.
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*/
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var PDFCheckBox = /** @class */ (function (_super) {
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tslib_1.__extends(PDFCheckBox, _super);
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function PDFCheckBox(acroCheckBox, ref, doc) {
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var _this = _super.call(this, acroCheckBox, ref, doc) || this;
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utils_1.assertIs(acroCheckBox, 'acroCheckBox', [
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[core_1.PDFAcroCheckBox, 'PDFAcroCheckBox'],
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]);
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_this.acroField = acroCheckBox;
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return _this;
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}
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/**
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* Mark this check box. This operation is analogous to a human user clicking
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* a check box to fill it in a PDF reader. This method will update the
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* underlying state of the check box field to indicate it has been selected.
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* PDF libraries and readers will be able to extract this value from the
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* saved document and determine that it was selected.
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*
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* For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* checkBox.check()
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* ```
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*
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* This method will mark this check box as dirty, causing its appearance
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* streams to be updated when either [[PDFDocument.save]] or
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* [[PDFForm.updateFieldAppearances]] is called. The updated appearance
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* streams will display a check mark inside the widgets of this check box
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* field.
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*/
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PDFCheckBox.prototype.check = function () {
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var _a;
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var onValue = (_a = this.acroField.getOnValue()) !== null && _a !== void 0 ? _a : core_1.PDFName.of('Yes');
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this.markAsDirty();
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this.acroField.setValue(onValue);
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};
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/**
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* Clears this check box. This operation is analogous to a human user clicking
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* a check box to unmark it in a PDF reader. This method will update the
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* underlying state of the check box field to indicate it has been deselected.
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* PDF libraries and readers will be able to extract this value from the
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* saved document and determine that it was not selected.
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*
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* For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* checkBox.uncheck()
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* ```
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*
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* This method will mark this check box as dirty. See [[PDFCheckBox.check]]
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* for more details about what this means.
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*/
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PDFCheckBox.prototype.uncheck = function () {
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this.markAsDirty();
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this.acroField.setValue(core_1.PDFName.of('Off'));
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};
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/**
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* Returns `true` if this check box is selected (either by a human user via
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* a PDF reader, or else programmatically via software). For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* if (checkBox.isChecked()) console.log('check box is selected')
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* ```
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* @returns Whether or not this check box is selected.
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*/
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PDFCheckBox.prototype.isChecked = function () {
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var onValue = this.acroField.getOnValue();
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return !!onValue && onValue === this.acroField.getValue();
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};
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/**
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* Show this check box on the specified page. For example:
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* ```js
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* const helvetica = await pdfDoc.embedFont(StandardFonts.Helvetica)
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* const page = pdfDoc.addPage()
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*
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* const form = pdfDoc.getForm()
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* const checkBox = form.createCheckBox('some.checkBox.field')
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*
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* checkBox.addToPage(page, {
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* x: 50,
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* y: 75,
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* width: 25,
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* height: 25,
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* textColor: rgb(1, 0, 0),
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* backgroundColor: rgb(0, 1, 0),
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* borderColor: rgb(0, 0, 1),
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* borderWidth: 2,
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* rotate: degrees(90),
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* })
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* ```
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* This will create a new widget for this check box field.
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* @param page The page to which this check box widget should be added.
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* @param options The options to be used when adding this check box widget.
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*/
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PDFCheckBox.prototype.addToPage = function (page, options) {
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var _a, _b, _c, _d, _e, _f;
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utils_1.assertIs(page, 'page', [[PDFPage_1.default, 'PDFPage']]);
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PDFField_1.assertFieldAppearanceOptions(options);
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if (!options)
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options = {};
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if (!('textColor' in options))
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options.textColor = colors_1.rgb(0, 0, 0);
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if (!('backgroundColor' in options))
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options.backgroundColor = colors_1.rgb(1, 1, 1);
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if (!('borderColor' in options))
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options.borderColor = colors_1.rgb(0, 0, 0);
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if (!('borderWidth' in options))
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options.borderWidth = 1;
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// Create a widget for this check box
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var widget = this.createWidget({
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x: (_a = options.x) !== null && _a !== void 0 ? _a : 0,
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y: (_b = options.y) !== null && _b !== void 0 ? _b : 0,
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width: (_c = options.width) !== null && _c !== void 0 ? _c : 50,
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height: (_d = options.height) !== null && _d !== void 0 ? _d : 50,
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textColor: options.textColor,
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backgroundColor: options.backgroundColor,
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borderColor: options.borderColor,
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borderWidth: (_e = options.borderWidth) !== null && _e !== void 0 ? _e : 0,
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rotate: (_f = options.rotate) !== null && _f !== void 0 ? _f : rotations_1.degrees(0),
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hidden: options.hidden,
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page: page.ref,
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});
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var widgetRef = this.doc.context.register(widget.dict);
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// Add widget to this field
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this.acroField.addWidget(widgetRef);
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// Set appearance streams for widget
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widget.setAppearanceState(core_1.PDFName.of('Off'));
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this.updateWidgetAppearance(widget, core_1.PDFName.of('Yes'));
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// Add widget to the given page
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page.node.addAnnot(widgetRef);
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};
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/**
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* Returns `true` if any of this check box's widgets do not have an
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* appearance stream for its current state. For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* if (checkBox.needsAppearancesUpdate()) console.log('Needs update')
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* ```
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* @returns Whether or not this check box needs an appearance update.
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*/
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PDFCheckBox.prototype.needsAppearancesUpdate = function () {
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var _a;
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var widgets = this.acroField.getWidgets();
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for (var idx = 0, len = widgets.length; idx < len; idx++) {
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var widget = widgets[idx];
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var state = widget.getAppearanceState();
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var normal = (_a = widget.getAppearances()) === null || _a === void 0 ? void 0 : _a.normal;
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if (!(normal instanceof core_1.PDFDict))
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return true;
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if (state && !normal.has(state))
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return true;
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}
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return false;
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};
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/**
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* Update the appearance streams for each of this check box's widgets using
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* the default appearance provider for check boxes. For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* checkBox.defaultUpdateAppearances()
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* ```
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*/
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PDFCheckBox.prototype.defaultUpdateAppearances = function () {
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this.updateAppearances();
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};
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/**
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* Update the appearance streams for each of this check box's widgets using
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* the given appearance provider. If no `provider` is passed, the default
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* appearance provider for check boxs will be used. For example:
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* ```js
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* const checkBox = form.getCheckBox('some.checkBox.field')
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* checkBox.updateAppearances((field, widget) => {
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* ...
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* return {
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* normal: { on: drawCheckBox(...), off: drawCheckBox(...) },
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* down: { on: drawCheckBox(...), off: drawCheckBox(...) },
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* }
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* })
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* ```
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* @param provider Optionally, the appearance provider to be used for
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* generating the contents of the appearance streams.
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*/
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PDFCheckBox.prototype.updateAppearances = function (provider) {
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var _a;
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utils_1.assertOrUndefined(provider, 'provider', [Function]);
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var widgets = this.acroField.getWidgets();
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for (var idx = 0, len = widgets.length; idx < len; idx++) {
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var widget = widgets[idx];
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var onValue = (_a = widget.getOnValue()) !== null && _a !== void 0 ? _a : core_1.PDFName.of('Yes');
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if (!onValue)
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continue;
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this.updateWidgetAppearance(widget, onValue, provider);
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}
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this.markAsClean();
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};
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PDFCheckBox.prototype.updateWidgetAppearance = function (widget, onValue, provider) {
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var apProvider = provider !== null && provider !== void 0 ? provider : appearances_1.defaultCheckBoxAppearanceProvider;
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var appearances = appearances_1.normalizeAppearance(apProvider(this, widget));
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this.updateOnOffWidgetAppearance(widget, onValue, appearances);
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};
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/**
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* > **NOTE:** You probably don't want to call this method directly. Instead,
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* > consider using the [[PDFForm.getCheckBox]] method, which will create an
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* > instance of [[PDFCheckBox]] for you.
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*
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* Create an instance of [[PDFCheckBox]] from an existing acroCheckBox and ref
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*
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* @param acroCheckBox The underlying `PDFAcroCheckBox` for this check box.
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* @param ref The unique reference for this check box.
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* @param doc The document to which this check box will belong.
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*/
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PDFCheckBox.of = function (acroCheckBox, ref, doc) {
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return new PDFCheckBox(acroCheckBox, ref, doc);
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};
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return PDFCheckBox;
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}(PDFField_1.default));
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exports.default = PDFCheckBox;
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//# sourceMappingURL=PDFCheckBox.js.map
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