pdf-lib
Version:
Library for creating and modifying PDF files in JavaScript
51 lines (50 loc) • 1.95 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
var simple_1 = require("../../pdf-operators/simple");
/**
* Draws an image object in a content stream. PNG and JPG image objects are
* supported.
*
* ```javascript
* // Should be a Uint8Array containing a PNG image
* const pngBytes = ...
*
* const [pngImage, pngDims] = pdfDoc.embedPNG(pngBytes);
* const contentStream = pdfDoc.register(
* pdfDoc.createContentStream(
* drawImage('MyPngImage', {
* x: 25,
* y: 50,
* width: pngDims.width * 0.5, // Make the image 50% smaller
* height: pngDims.height * 0.5, // Make the image 50% smaller
* rotateDegrees: 180 // Draw the image upside down
* skewDegrees: { xAxis: 30, yAxis: 30 } // Skew both axes by 30 degrees
* }),
* ),
* );
* const page = pdfDoc
* .createPage([250, 500])
* .addImageObject('MyPngImage', pngImage)
* .addContentStreams(contentStream);
* ```
*
* @param name Name of the image XObject to be drawn. Should be present in
* the XObject Dictionary of the page to which the content stream
* is applied.
* @param options An options object with named parameters.
*/
exports.drawImage = function (name, options) {
return [
simple_1.pushGraphicsState(),
simple_1.translate(options.x || 0, options.y || 0),
options.rotateDegrees && simple_1.rotateDegrees(options.rotateDegrees),
options.rotateRadians && simple_1.rotateRadians(options.rotateRadians),
simple_1.scale(options.width || 100, options.height || 100),
options.skewDegrees &&
simple_1.skewDegrees(options.skewDegrees.xAxis, options.skewDegrees.yAxis),
options.skewRadians &&
simple_1.skewRadians(options.skewRadians.xAxis, options.skewRadians.yAxis),
simple_1.image(name),
simple_1.popGraphicsState(),
].filter(Boolean);
};