mirror of
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synced 2025-04-22 16:18:08 +02:00
XFA - Convert some template properties into CSS ones (#13082)
- implement few positioning properties: position, width, height, anchor; - implement font element; - implement fill element (used by font) and its children (linear, radial, ...); - font property is inherited from ancestor container (see https://www.pdfa.org/wp-content/uploads/2020/07/XFA-3_3.pdf#page=43) so let CSS handles that stuff; - in order to reduce the number of properties to set, only set non default properties and put the default in CSS; - set a background to some containers to be able to see them (will be removed in a future commit).
This commit is contained in:
calixteman
GitHub
parent
9d0ce6e79f
commit
63471bcbbe
10 changed files with 549 additions and 93 deletions
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@ -13,57 +13,108 @@
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* limitations under the License.
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*/
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const converters = {
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pt: x => x,
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cm: x => Math.round((x / 2.54) * 72),
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mm: x => Math.round((x / (10 * 2.54)) * 72),
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in: x => Math.round(x * 72),
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};
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import { $toStyle, XFAObject } from "./xfa_object.js";
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import { warn } from "../../shared/util.js";
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function measureToString(m) {
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const conv = converters[m.unit];
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if (conv) {
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return `${conv(m.value)}px`;
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}
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return `${m.value}${m.unit}`;
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return Number.isInteger(m) ? `${m}px` : `${m.toFixed(2)}px`;
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}
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function setWidthHeight(node, style) {
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if (node.w) {
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style.width = measureToString(node.w);
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} else {
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if (node.maxW && node.maxW.value > 0) {
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style.maxWidth = measureToString(node.maxW);
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const converters = {
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anchorType(node, style) {
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if (!("transform" in style)) {
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style.transform = "";
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}
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if (node.minW && node.minW.value > 0) {
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style.minWidth = measureToString(node.minW);
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switch (node.anchorType) {
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case "bottomCenter":
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style.transform += "translate(-50%, -100%)";
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break;
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case "bottomLeft":
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style.transform += "translate(0,-100%)";
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break;
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case "bottomRight":
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style.transform += "translate(-100%,-100%)";
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break;
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case "middleCenter":
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style.transform += "translate(-50%,-50%)";
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break;
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case "middleLeft":
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style.transform += "translate(0,-50%)";
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break;
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case "middleRight":
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style.transform += "translate(-100%,-50%)";
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break;
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case "topCenter":
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style.transform += "translate(-50%,0)";
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break;
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case "topRight":
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style.transform += "translate(-100%,0)";
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break;
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}
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},
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dimensions(node, style) {
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if (node.w) {
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style.width = measureToString(node.w);
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} else {
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if (node.maxW && node.maxW.value > 0) {
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style.maxWidth = measureToString(node.maxW);
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}
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if (node.minW && node.minW.value > 0) {
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style.minWidth = measureToString(node.minW);
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}
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}
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}
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if (node.h) {
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style.height = measureToString(node.h);
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} else {
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if (node.maxH && node.maxH.value > 0) {
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style.maxHeight = measureToString(node.maxH);
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if (node.h) {
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style.height = measureToString(node.h);
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} else {
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if (node.maxH && node.maxH.value > 0) {
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style.maxHeight = measureToString(node.maxH);
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}
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if (node.minH && node.minH.value > 0) {
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style.minHeight = measureToString(node.minH);
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}
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}
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if (node.minH && node.minH.value > 0) {
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style.minHeight = measureToString(node.minH);
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},
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position(node, style) {
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if (node.x !== "" || node.y !== "") {
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style.position = "absolute";
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style.left = measureToString(node.x);
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style.top = measureToString(node.y);
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}
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},
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rotate(node, style) {
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if (node.rotate) {
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if (!("transform" in style)) {
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style.transform = "";
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}
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style.transform += `rotate(-${node.rotate}deg)`;
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style.transformOrigin = "top left";
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}
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},
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};
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function toStyle(node, ...names) {
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const style = Object.create(null);
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for (const name of names) {
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const value = node[name];
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if (value === null) {
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continue;
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}
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if (value instanceof XFAObject) {
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const newStyle = value[$toStyle]();
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if (newStyle) {
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Object.assign(style, newStyle);
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} else {
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warn(`(DEBUG) - XFA - style for ${name} not implemented yet`);
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}
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continue;
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}
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if (converters.hasOwnProperty(name)) {
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converters[name](node, style);
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}
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}
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return style;
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}
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function setPosition(node, style) {
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style.transform = "";
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if (node.rotate) {
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style.transform = `rotate(-${node.rotate}deg) `;
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style.transformOrigin = "top left";
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}
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if (node.x !== "" || node.y !== "") {
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style.position = "absolute";
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style.left = node.x ? measureToString(node.x) : "0pt";
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style.top = node.y ? measureToString(node.y) : "0pt";
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}
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}
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export { measureToString, setPosition, setWidthHeight };
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export { measureToString, toStyle };
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@ -30,6 +30,7 @@ import {
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$setSetAttributes,
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$setValue,
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$toHTML,
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$toStyle,
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$uid,
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ContentObject,
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Option01,
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@ -50,8 +51,8 @@ import {
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getRelevant,
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getStringOption,
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} from "./utils.js";
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import { measureToString, setPosition, setWidthHeight } from "./html_utils.js";
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import { warn } from "../../shared/util.js";
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import { measureToString, toStyle } from "./html_utils.js";
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import { Util, warn } from "../../shared/util.js";
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const TEMPLATE_NS_ID = NamespaceIds.template.id;
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@ -614,6 +615,10 @@ class Color extends XFAObject {
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[$hasSettableValue]() {
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return false;
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}
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[$toStyle]() {
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return Util.makeHexColor(this.value.r, this.value.g, this.value.b);
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}
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}
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class Comb extends XFAObject {
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@ -680,7 +685,7 @@ class ContentArea extends XFAObject {
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children: [],
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attributes: {
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style,
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className: "xfa-contentarea",
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class: "xfaContentarea",
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id: this[$uid],
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},
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};
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@ -896,10 +901,10 @@ class Draw extends XFAObject {
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"invisible",
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]);
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this.relevant = getRelevant(attributes.relevant);
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this.rotate = getFloat({
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this.rotate = getInteger({
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data: attributes.rotate,
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defaultValue: 0,
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validate: x => true,
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validate: x => x % 90 === 0,
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});
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this.use = attributes.use || "";
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this.usehref = attributes.usehref || "";
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@ -924,6 +929,38 @@ class Draw extends XFAObject {
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[$setValue](value) {
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_setValue(this, value);
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}
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[$toHTML]() {
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if (!this.value) {
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return null;
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}
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const style = toStyle(
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this,
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"font",
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"dimensions",
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"position",
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"rotate",
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"anchorType"
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);
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const clazz = ["xfaDraw"];
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if (this.font) {
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clazz.push("xfaFont");
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}
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const attributes = {
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style,
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id: this[$uid],
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class: clazz.join(" "),
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};
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return {
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name: "div",
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attributes,
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children: [],
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};
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}
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}
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class Edge extends XFAObject {
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@ -1269,6 +1306,31 @@ class ExclGroup extends XFAObject {
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field.value[$setValue](nodeBoolean);
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}
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}
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[$toHTML]() {
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if (!this.value) {
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return null;
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}
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const style = toStyle(this, "dimensions", "position", "anchorType");
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const attributes = {
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style,
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id: this[$uid],
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class: "xfaExclgroup",
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};
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const children = this[$childrenToHTML]({
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// TODO: exObject & exclGroup
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filter: new Set(["field"]),
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include: true,
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});
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return {
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name: "div",
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attributes,
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children,
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};
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}
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}
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class Execute extends XFAObject {
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@ -1360,7 +1422,11 @@ class Field extends XFAObject {
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"invisible",
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]);
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this.relevant = getRelevant(attributes.relevant);
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this.rotate = getStringOption(attributes.rotate, ["0", "angle"]);
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this.rotate = getInteger({
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data: attributes.rotate,
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defaultValue: 0,
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validate: x => x % 90 === 0,
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});
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this.use = attributes.use || "";
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this.usehref = attributes.usehref || "";
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this.w = getMeasurement(attributes.w);
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@ -1394,6 +1460,38 @@ class Field extends XFAObject {
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[$setValue](value) {
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_setValue(this, value);
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}
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[$toHTML]() {
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if (!this.value) {
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return null;
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}
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const style = toStyle(
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this,
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"font",
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"dimensions",
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"position",
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"rotate",
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"anchorType"
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);
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const clazz = ["xfaField"];
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if (this.font) {
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clazz.push("xfaFont");
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}
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const attributes = {
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style,
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id: this[$uid],
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class: clazz.join(" "),
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};
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return {
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name: "div",
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attributes,
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children: [],
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};
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}
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}
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class Fill extends XFAObject {
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@ -1418,6 +1516,26 @@ class Fill extends XFAObject {
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this.solid = null;
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this.stipple = null;
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}
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[$toStyle]() {
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let fill = "#000000";
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for (const name of Object.getOwnPropertyNames(this)) {
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if (name === "extras" || name === "color") {
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continue;
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}
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const obj = this[name];
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if (!(obj instanceof XFAObject)) {
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continue;
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}
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fill = obj[$toStyle](this.color);
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break;
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}
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return {
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color: fill,
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};
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}
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}
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class Filter extends XFAObject {
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@ -1522,6 +1640,80 @@ class Font extends XFAObject {
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this.extras = null;
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this.fill = null;
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}
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[$toStyle]() {
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const style = toStyle(this, "fill");
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if (style.color) {
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if (!style.color.startsWith("#")) {
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// We've a gradient which is not possible for a font color
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// so use a workaround.
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style.backgroundClip = "text";
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style.background = style.color;
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style.color = "transparent";
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} else if (style.color === "#000000") {
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delete style.color;
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}
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}
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if (this.baselineShift) {
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style.verticalAlign = measureToString(this.baselineShift);
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}
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// TODO: fontHorizontalScale
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// TODO: fontVerticalScale
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if (this.kerningMode !== "none") {
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style.fontKerning = "normal";
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}
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if (this.letterSpacing) {
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style.letterSpacing = measureToString(this.letterSpacing);
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}
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if (this.lineThrough !== 0) {
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style.textDecoration = "line-through";
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if (this.lineThrough === 2) {
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style.textDecorationStyle = "double";
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}
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}
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// TODO: lineThroughPeriod
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if (this.overline !== 0) {
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style.textDecoration = "overline";
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if (this.overline === 2) {
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style.textDecorationStyle = "double";
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}
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}
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// TODO: overlinePeriod
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if (this.posture !== "normal") {
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style.fontStyle = this.posture;
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}
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const fontSize = measureToString(this.size);
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if (fontSize !== "10px") {
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style.fontSize = fontSize;
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}
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style.fontFamily = this.typeface;
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if (this.underline !== 0) {
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style.textDecoration = "underline";
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if (this.underline === 2) {
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style.textDecorationStyle = "double";
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}
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}
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// TODO: underlinePeriod
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if (this.weight !== "normal") {
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style.fontWeight = this.weight;
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}
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return style;
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}
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}
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class Format extends XFAObject {
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@ -1755,6 +1947,13 @@ class Linear extends XFAObject {
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this.color = null;
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this.extras = null;
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}
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[$toStyle](startColor) {
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startColor = startColor ? startColor[$toStyle]() : "#FFFFFF";
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const transf = this.type.replace(/([RBLT])/, " $1").toLowerCase();
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const endColor = this.color ? this.color[$toStyle]() : "#000000";
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return `linear-gradient(${transf}, ${startColor}, ${endColor})`;
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}
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}
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class LockDocument extends ContentObject {
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@ -1989,11 +2188,11 @@ class PageArea extends XFAObject {
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// TODO: handle the case where there are several content areas.
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const contentArea = children.find(
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node => node.attributes.className === "xfa-contentarea"
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node => node.attributes.class === "xfaContentarea"
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);
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const style = Object.create(null);
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if (this.medium && this.medium.short.value && this.medium.long.value) {
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if (this.medium && this.medium.short && this.medium.long) {
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style.width = measureToString(this.medium.short);
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style.height = measureToString(this.medium.long);
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} else {
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@ -2133,6 +2332,32 @@ class Pattern extends XFAObject {
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this.color = null;
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this.extras = null;
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}
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[$toStyle](startColor) {
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startColor = startColor ? startColor[$toStyle]() : "#FFFFFF";
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const endColor = this.color ? this.color[$toStyle]() : "#000000";
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const width = 5;
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const cmd = "repeating-linear-gradient";
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const colors = `${startColor},${startColor} ${width}px,${endColor} ${width}px,${endColor} ${
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2 * width
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}px`;
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switch (this.type) {
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case "crossHatch":
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return `${cmd}(to top,${colors}) ${cmd}(to right,${colors})`;
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case "crossDiagonal":
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return `${cmd}(45deg,${colors}) ${cmd}(-45deg,${colors})`;
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case "diagonalLeft":
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return `${cmd}(45deg,${colors})`;
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case "diagonalRight":
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return `${cmd}(-45deg,${colors})`;
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case "horizontal":
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return `${cmd}(to top,${colors})`;
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case "vertical":
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return `${cmd}(to right,${colors})`;
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}
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return "";
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}
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}
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class Picture extends StringObject {
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|
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@ -2270,6 +2495,16 @@ class Radial extends XFAObject {
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this.color = null;
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this.extras = null;
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}
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[$toStyle](startColor) {
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startColor = startColor ? startColor[$toStyle]() : "#FFFFFF";
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const endColor = this.color ? this.color[$toStyle]() : "#000000";
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const colors =
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this.type === "toEdge"
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? `${startColor},${endColor}`
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: `${endColor},${startColor}`;
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return `radial-gradient(circle to center, ${colors})`;
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}
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}
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class Reason extends StringObject {
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|
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@ -2393,6 +2628,10 @@ class Solid extends XFAObject {
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this.usehref = attributes.usehref || "";
|
||||
this.extras = null;
|
||||
}
|
||||
|
||||
[$toStyle](startColor) {
|
||||
return startColor ? startColor[$toStyle]() : "#FFFFFF";
|
||||
}
|
||||
}
|
||||
|
||||
class Speak extends StringObject {
|
||||
|
|
@ -2430,6 +2669,15 @@ class Stipple extends XFAObject {
|
|||
this.color = null;
|
||||
this.extras = null;
|
||||
}
|
||||
|
||||
[$toStyle](bgColor) {
|
||||
const alpha = this.rate / 100;
|
||||
return Util.makeHexColor(
|
||||
Math.round(bgColor.value.r * (1 - alpha) + this.value.r * alpha),
|
||||
Math.round(bgColor.value.g * (1 - alpha) + this.value.g * alpha),
|
||||
Math.round(bgColor.value.b * (1 - alpha) + this.value.b * alpha)
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
class Subform extends XFAObject {
|
||||
|
|
@ -2568,17 +2816,16 @@ class Subform extends XFAObject {
|
|||
page = pageAreas[pageNumber][$toHTML]();
|
||||
}
|
||||
|
||||
const style = Object.create(null);
|
||||
setWidthHeight(this, style);
|
||||
setPosition(this, style);
|
||||
const style = toStyle(this, "dimensions", "position");
|
||||
|
||||
const attributes = {
|
||||
style,
|
||||
id: this[$uid],
|
||||
class: "xfaSubform",
|
||||
};
|
||||
|
||||
if (this.name) {
|
||||
attributes["xfa-name"] = this.name;
|
||||
attributes.xfaName = this.name;
|
||||
}
|
||||
|
||||
const children = this[$childrenToHTML]({
|
||||
|
|
|
|||
|
|
@ -13,7 +13,13 @@
|
|||
* limitations under the License.
|
||||
*/
|
||||
|
||||
const measurementPattern = /([+-]?)([0-9]+\.?[0-9]*)(.*)/;
|
||||
const dimConverters = {
|
||||
pt: x => x,
|
||||
cm: x => (x / 2.54) * 72,
|
||||
mm: x => (x / (10 * 2.54)) * 72,
|
||||
in: x => x * 72,
|
||||
};
|
||||
const measurementPattern = /([+-]?[0-9]+\.?[0-9]*)(.*)/;
|
||||
|
||||
function getInteger({ data, defaultValue, validate }) {
|
||||
if (!data) {
|
||||
|
|
@ -67,15 +73,22 @@ function getMeasurement(str, def = "0") {
|
|||
if (!match) {
|
||||
return getMeasurement(def);
|
||||
}
|
||||
const [, sign, valueStr, unit] = match;
|
||||
const [, valueStr, unit] = match;
|
||||
const value = parseFloat(valueStr);
|
||||
if (isNaN(value)) {
|
||||
return getMeasurement(def);
|
||||
}
|
||||
return {
|
||||
value: sign === "-" ? -value : value,
|
||||
unit: unit || "pt",
|
||||
};
|
||||
|
||||
if (value === 0) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
const conv = dimConverters[unit];
|
||||
if (conv) {
|
||||
return conv(value);
|
||||
}
|
||||
|
||||
return value;
|
||||
}
|
||||
|
||||
function getRatio(data) {
|
||||
|
|
@ -134,7 +147,7 @@ function getColor(data, def = [0, 0, 0]) {
|
|||
}
|
||||
|
||||
function getBBox(data) {
|
||||
const def = getMeasurement("-1");
|
||||
const def = -1;
|
||||
if (!data) {
|
||||
return { x: def, y: def, width: def, height: def };
|
||||
}
|
||||
|
|
@ -142,7 +155,7 @@ function getBBox(data) {
|
|||
.trim()
|
||||
.split(/\s*,\s*/)
|
||||
.map(m => getMeasurement(m, "-1"));
|
||||
if (bbox.length < 4 || bbox[2].value < 0 || bbox[3].value < 0) {
|
||||
if (bbox.length < 4 || bbox[2] < 0 || bbox[3] < 0) {
|
||||
return { x: def, y: def, width: def, height: def };
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -59,6 +59,7 @@ const $setSetAttributes = Symbol();
|
|||
const $setValue = Symbol();
|
||||
const $text = Symbol();
|
||||
const $toHTML = Symbol();
|
||||
const $toStyle = Symbol();
|
||||
const $uid = Symbol("uid");
|
||||
|
||||
const _applyPrototype = Symbol();
|
||||
|
|
@ -259,6 +260,10 @@ class XFAObject {
|
|||
return dumped;
|
||||
}
|
||||
|
||||
[$toStyle]() {
|
||||
return null;
|
||||
}
|
||||
|
||||
[$toHTML]() {
|
||||
return null;
|
||||
}
|
||||
|
|
@ -839,6 +844,7 @@ export {
|
|||
$setValue,
|
||||
$text,
|
||||
$toHTML,
|
||||
$toStyle,
|
||||
$uid,
|
||||
ContentObject,
|
||||
IntegerObject,
|
||||
|
|
|
|||
|
|
@ -36,9 +36,13 @@ class XfaLayer {
|
|||
}
|
||||
const stack = [[root, -1, rootHtml]];
|
||||
|
||||
parameters.div.appendChild(rootHtml);
|
||||
const rootDiv = parameters.div;
|
||||
rootDiv.appendChild(rootHtml);
|
||||
const coeffs = parameters.viewport.transform.join(",");
|
||||
parameters.div.style.transform = `matrix(${coeffs})`;
|
||||
rootDiv.style.transform = `matrix(${coeffs})`;
|
||||
|
||||
// Set defaults.
|
||||
rootDiv.setAttribute("class", "xfaLayer xfaFont");
|
||||
|
||||
while (stack.length > 0) {
|
||||
const [parent, i, html] = stack[stack.length - 1];
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue