Move PageViewport from src/shared/util.js to src/display/dom_utils.js
Since the `PageViewport` is not used in the worker, duplicating this code on both the main and worker sides seems completely unnecessary.
This commit is contained in:
Jonas Jenwald
parent
f486051d77
commit
08c8f8733d
@ -17,12 +17,12 @@
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import {
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assert, createPromiseCapability, getVerbosityLevel, info, InvalidPDFException,
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isArrayBuffer, isNum, isSameOrigin, MessageHandler, MissingPDFException,
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NativeImageDecoding, PageViewport, PasswordException, setVerbosityLevel,
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shadow, stringToBytes, UnexpectedResponseException, UnknownErrorException,
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NativeImageDecoding, PasswordException, setVerbosityLevel, shadow,
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stringToBytes, UnexpectedResponseException, UnknownErrorException,
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unreachable, Util, warn
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} from '../shared/util';
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import {
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DOMCanvasFactory, DOMCMapReaderFactory, DummyStatTimer,
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DOMCanvasFactory, DOMCMapReaderFactory, DummyStatTimer, PageViewport,
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RenderingCancelledException, StatTimer
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} from './dom_utils';
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import { FontFaceObject, FontLoader } from './font_loader';
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@ -15,7 +15,7 @@
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import {
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assert, CMapCompressionType, removeNullCharacters, stringToBytes,
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unreachable, warn
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unreachable, Util, warn
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} from '../shared/util';
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const DEFAULT_LINK_REL = 'noopener noreferrer nofollow';
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@ -135,6 +135,142 @@ class DOMSVGFactory {
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}
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}
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/**
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* PDF page viewport created based on scale, rotation and offset.
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* @class
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* @alias PageViewport
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*/
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var PageViewport = (function PageViewportClosure() {
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/**
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* @constructor
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* @private
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* @param viewBox {Array} xMin, yMin, xMax and yMax coordinates.
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* @param scale {number} scale of the viewport.
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* @param rotation {number} rotations of the viewport in degrees.
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* @param offsetX {number} offset X
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* @param offsetY {number} offset Y
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* @param dontFlip {boolean} if true, axis Y will not be flipped.
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*/
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function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
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this.viewBox = viewBox;
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this.scale = scale;
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this.rotation = rotation;
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this.offsetX = offsetX;
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this.offsetY = offsetY;
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// creating transform to convert pdf coordinate system to the normal
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// canvas like coordinates taking in account scale and rotation
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var centerX = (viewBox[2] + viewBox[0]) / 2;
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var centerY = (viewBox[3] + viewBox[1]) / 2;
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var rotateA, rotateB, rotateC, rotateD;
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rotation = rotation % 360;
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rotation = rotation < 0 ? rotation + 360 : rotation;
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switch (rotation) {
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case 180:
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rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
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break;
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case 90:
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rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0;
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break;
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case 270:
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rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0;
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break;
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// case 0:
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default:
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rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1;
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break;
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}
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if (dontFlip) {
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rotateC = -rotateC; rotateD = -rotateD;
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}
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var offsetCanvasX, offsetCanvasY;
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var width, height;
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if (rotateA === 0) {
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offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
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offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
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width = Math.abs(viewBox[3] - viewBox[1]) * scale;
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height = Math.abs(viewBox[2] - viewBox[0]) * scale;
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} else {
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offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
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offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
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width = Math.abs(viewBox[2] - viewBox[0]) * scale;
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height = Math.abs(viewBox[3] - viewBox[1]) * scale;
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}
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// creating transform for the following operations:
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// translate(-centerX, -centerY), rotate and flip vertically,
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// scale, and translate(offsetCanvasX, offsetCanvasY)
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this.transform = [
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rotateA * scale,
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rotateB * scale,
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rotateC * scale,
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rotateD * scale,
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offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY,
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offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
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];
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this.width = width;
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this.height = height;
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this.fontScale = scale;
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}
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PageViewport.prototype = /** @lends PageViewport.prototype */ {
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/**
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* Clones viewport with additional properties.
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* @param args {Object} (optional) If specified, may contain the 'scale' or
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* 'rotation' properties to override the corresponding properties in
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* the cloned viewport.
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* @returns {PageViewport} Cloned viewport.
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*/
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clone: function PageViewPort_clone(args) {
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args = args || {};
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var scale = 'scale' in args ? args.scale : this.scale;
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var rotation = 'rotation' in args ? args.rotation : this.rotation;
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return new PageViewport(this.viewBox.slice(), scale, rotation,
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this.offsetX, this.offsetY, args.dontFlip);
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},
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/**
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* Converts PDF point to the viewport coordinates. For examples, useful for
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* converting PDF location into canvas pixel coordinates.
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* @param x {number} X coordinate.
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* @param y {number} Y coordinate.
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* @returns {Object} Object that contains 'x' and 'y' properties of the
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* point in the viewport coordinate space.
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* @see {@link convertToPdfPoint}
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* @see {@link convertToViewportRectangle}
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*/
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convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
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return Util.applyTransform([x, y], this.transform);
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},
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/**
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* Converts PDF rectangle to the viewport coordinates.
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* @param rect {Array} xMin, yMin, xMax and yMax coordinates.
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* @returns {Array} Contains corresponding coordinates of the rectangle
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* in the viewport coordinate space.
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* @see {@link convertToViewportPoint}
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*/
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convertToViewportRectangle:
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function PageViewport_convertToViewportRectangle(rect) {
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var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
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var br = Util.applyTransform([rect[2], rect[3]], this.transform);
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return [tl[0], tl[1], br[0], br[1]];
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},
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/**
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* Converts viewport coordinates to the PDF location. For examples, useful
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* for converting canvas pixel location into PDF one.
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* @param x {number} X coordinate.
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* @param y {number} Y coordinate.
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* @returns {Object} Object that contains 'x' and 'y' properties of the
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* point in the PDF coordinate space.
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* @see {@link convertToViewportPoint}
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*/
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convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
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return Util.applyInverseTransform([x, y], this.transform);
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},
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};
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return PageViewport;
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})();
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var RenderingCancelledException = (function RenderingCancelledException() {
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function RenderingCancelledException(msg, type) {
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this.message = msg;
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@ -277,6 +413,7 @@ class DummyStatTimer {
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}
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export {
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PageViewport,
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RenderingCancelledException,
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addLinkAttributes,
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getFilenameFromUrl,
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@ -926,142 +926,6 @@ var Util = (function UtilClosure() {
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return Util;
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})();
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/**
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* PDF page viewport created based on scale, rotation and offset.
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* @class
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* @alias PageViewport
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*/
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var PageViewport = (function PageViewportClosure() {
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/**
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* @constructor
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* @private
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* @param viewBox {Array} xMin, yMin, xMax and yMax coordinates.
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* @param scale {number} scale of the viewport.
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* @param rotation {number} rotations of the viewport in degrees.
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* @param offsetX {number} offset X
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* @param offsetY {number} offset Y
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* @param dontFlip {boolean} if true, axis Y will not be flipped.
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*/
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function PageViewport(viewBox, scale, rotation, offsetX, offsetY, dontFlip) {
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this.viewBox = viewBox;
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this.scale = scale;
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this.rotation = rotation;
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this.offsetX = offsetX;
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this.offsetY = offsetY;
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// creating transform to convert pdf coordinate system to the normal
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// canvas like coordinates taking in account scale and rotation
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var centerX = (viewBox[2] + viewBox[0]) / 2;
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var centerY = (viewBox[3] + viewBox[1]) / 2;
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var rotateA, rotateB, rotateC, rotateD;
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rotation = rotation % 360;
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rotation = rotation < 0 ? rotation + 360 : rotation;
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switch (rotation) {
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case 180:
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rotateA = -1; rotateB = 0; rotateC = 0; rotateD = 1;
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break;
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case 90:
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rotateA = 0; rotateB = 1; rotateC = 1; rotateD = 0;
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break;
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case 270:
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rotateA = 0; rotateB = -1; rotateC = -1; rotateD = 0;
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break;
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// case 0:
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default:
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rotateA = 1; rotateB = 0; rotateC = 0; rotateD = -1;
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break;
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}
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if (dontFlip) {
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rotateC = -rotateC; rotateD = -rotateD;
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}
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var offsetCanvasX, offsetCanvasY;
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var width, height;
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if (rotateA === 0) {
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offsetCanvasX = Math.abs(centerY - viewBox[1]) * scale + offsetX;
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offsetCanvasY = Math.abs(centerX - viewBox[0]) * scale + offsetY;
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width = Math.abs(viewBox[3] - viewBox[1]) * scale;
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height = Math.abs(viewBox[2] - viewBox[0]) * scale;
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} else {
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offsetCanvasX = Math.abs(centerX - viewBox[0]) * scale + offsetX;
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offsetCanvasY = Math.abs(centerY - viewBox[1]) * scale + offsetY;
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width = Math.abs(viewBox[2] - viewBox[0]) * scale;
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height = Math.abs(viewBox[3] - viewBox[1]) * scale;
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}
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// creating transform for the following operations:
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// translate(-centerX, -centerY), rotate and flip vertically,
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// scale, and translate(offsetCanvasX, offsetCanvasY)
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this.transform = [
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rotateA * scale,
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rotateB * scale,
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rotateC * scale,
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rotateD * scale,
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offsetCanvasX - rotateA * scale * centerX - rotateC * scale * centerY,
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offsetCanvasY - rotateB * scale * centerX - rotateD * scale * centerY
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];
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this.width = width;
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this.height = height;
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this.fontScale = scale;
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}
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PageViewport.prototype = /** @lends PageViewport.prototype */ {
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/**
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* Clones viewport with additional properties.
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* @param args {Object} (optional) If specified, may contain the 'scale' or
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* 'rotation' properties to override the corresponding properties in
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* the cloned viewport.
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* @returns {PageViewport} Cloned viewport.
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*/
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clone: function PageViewPort_clone(args) {
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args = args || {};
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var scale = 'scale' in args ? args.scale : this.scale;
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var rotation = 'rotation' in args ? args.rotation : this.rotation;
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return new PageViewport(this.viewBox.slice(), scale, rotation,
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this.offsetX, this.offsetY, args.dontFlip);
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},
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/**
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* Converts PDF point to the viewport coordinates. For examples, useful for
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* converting PDF location into canvas pixel coordinates.
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* @param x {number} X coordinate.
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* @param y {number} Y coordinate.
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* @returns {Object} Object that contains 'x' and 'y' properties of the
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* point in the viewport coordinate space.
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* @see {@link convertToPdfPoint}
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* @see {@link convertToViewportRectangle}
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*/
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convertToViewportPoint: function PageViewport_convertToViewportPoint(x, y) {
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return Util.applyTransform([x, y], this.transform);
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},
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/**
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* Converts PDF rectangle to the viewport coordinates.
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* @param rect {Array} xMin, yMin, xMax and yMax coordinates.
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* @returns {Array} Contains corresponding coordinates of the rectangle
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* in the viewport coordinate space.
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* @see {@link convertToViewportPoint}
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*/
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convertToViewportRectangle:
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function PageViewport_convertToViewportRectangle(rect) {
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var tl = Util.applyTransform([rect[0], rect[1]], this.transform);
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var br = Util.applyTransform([rect[2], rect[3]], this.transform);
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return [tl[0], tl[1], br[0], br[1]];
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},
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/**
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* Converts viewport coordinates to the PDF location. For examples, useful
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* for converting canvas pixel location into PDF one.
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* @param x {number} X coordinate.
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* @param y {number} Y coordinate.
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* @returns {Object} Object that contains 'x' and 'y' properties of the
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* point in the PDF coordinate space.
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* @see {@link convertToViewportPoint}
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*/
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convertToPdfPoint: function PageViewport_convertToPdfPoint(x, y) {
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return Util.applyInverseTransform([x, y], this.transform);
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},
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};
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return PageViewport;
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})();
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var PDFStringTranslateTable = [
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0x2D8, 0x2C7, 0x2C6, 0x2D9, 0x2DD, 0x2DB, 0x2DA, 0x2DC, 0, 0, 0, 0, 0, 0, 0,
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@ -1627,7 +1491,6 @@ export {
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MissingPDFException,
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NativeImageDecoding,
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NotImplementedException,
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PageViewport,
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PasswordException,
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PasswordResponses,
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StreamType,
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