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[api-minor][Editor] When switching to editing mode, redraw pages cont…
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…aining editable annotations

Right now, editable annotations are using their own canvas when they're drawn, but
it induces several issues:
 - if the annotation has to be composed with the page then the canvas must be correctly
   composed with its parent. That means we should move the canvas under canvasWrapper
   and we should extract composing info from the drawing instructions...
   Currently it's the case with highlight annotations.
 - we use some extra memory for those canvas even if the user will never edit them, which
   the case for example when opening a pdf in Fenix.

So with this patch, all the editable annotations are drawn on the canvas. When the
user switches to editing mode, then the pages with some editable annotations are redrawn but
without them: they'll be replaced by their counterpart in the annotation editor layer.
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calixteman committed Jun 27, 2024
1 parent af16aa6 commit f9d63b4
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Showing 13 changed files with 352 additions and 103 deletions.
8 changes: 7 additions & 1 deletion src/core/annotation.js
Original file line number Diff line number Diff line change
Expand Up @@ -680,6 +680,7 @@ class Annotation {
hasOwnCanvas: false,
noRotate: !!(this.flags & AnnotationFlag.NOROTATE),
noHTML: isLocked && isContentLocked,
isEditable: false,
};

if (params.collectFields) {
Expand Down Expand Up @@ -776,6 +777,10 @@ class Annotation {
return this.printable;
}

mustBeViewedWhenEditing() {
return !this.data.isEditable;
}

/**
* @type {boolean}
*/
Expand Down Expand Up @@ -3802,7 +3807,8 @@ class FreeTextAnnotation extends MarkupAnnotation {
// It uses its own canvas in order to be hidden if edited.
// But if it has the noHTML flag, it means that we don't want to be able
// to modify it so we can just draw it on the main canvas.
this.data.hasOwnCanvas = !this.data.noHTML;
this.data.hasOwnCanvas = this.data.noRotate;
this.data.isEditable = !this.data.noHTML;
// We want to be able to add mouse listeners to the annotation.
this.data.noHTML = false;

Expand Down
6 changes: 5 additions & 1 deletion src/core/document.js
Original file line number Diff line number Diff line change
Expand Up @@ -411,6 +411,8 @@ class Page {
intent,
cacheKey,
annotationStorage = null,
isEditing = false,
modifiedIds = null,
}) {
const contentStreamPromise = this.getContentStream();
const resourcesPromise = this.loadResources([
Expand Down Expand Up @@ -579,7 +581,9 @@ class Page {
if (
intentAny ||
(intentDisplay &&
annotation.mustBeViewed(annotationStorage, renderForms)) ||
annotation.mustBeViewed(annotationStorage, renderForms) &&
((isEditing && annotation.mustBeViewedWhenEditing()) ||
(!isEditing && !modifiedIds?.has(annotation.data.id)))) ||
(intentPrint && annotation.mustBePrinted(annotationStorage))
) {
opListPromises.push(
Expand Down
2 changes: 2 additions & 0 deletions src/core/worker.js
Original file line number Diff line number Diff line change
Expand Up @@ -752,6 +752,8 @@ class WorkerMessageHandler {
intent: data.intent,
cacheKey: data.cacheKey,
annotationStorage: data.annotationStorage,
isEditing: data.isEditing,
modifiedIds: data.modifiedIds,
})
.then(
function (operatorListInfo) {
Expand Down
18 changes: 9 additions & 9 deletions src/display/annotation_layer.js
Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,10 @@ class AnnotationElement {
return !!(titleObj?.str || contentsObj?.str || richText?.str);
}

get _isEditable() {
return this.data.isEditable;
}

get hasPopupData() {
return AnnotationElement._hasPopupData(this.data);
}
Expand Down Expand Up @@ -734,10 +738,6 @@ class AnnotationElement {
}
}

get _isEditable() {
return false;
}

_editOnDoubleClick() {
if (!this._isEditable) {
return;
Expand Down Expand Up @@ -2530,10 +2530,6 @@ class FreeTextAnnotationElement extends AnnotationElement {

return this.container;
}

get _isEditable() {
return this.data.hasOwnCanvas;
}
}

class LineAnnotationElement extends AnnotationElement {
Expand Down Expand Up @@ -3107,6 +3103,10 @@ class AnnotationLayer {
}
}

hasEditableAnnotations() {
return this.#editableAnnotations.size > 0;
}

#appendElement(element, id) {
const contentElement = element.firstChild || element;
contentElement.id = `${AnnotationPrefix}${id}`;
Expand Down Expand Up @@ -3188,7 +3188,7 @@ class AnnotationLayer {
}
this.#appendElement(rendered, data.id);

if (element.annotationEditorType > 0) {
if (element._isEditable) {
this.#editableAnnotations.set(element.data.id, element);
this._annotationEditorUIManager?.renderAnnotationElement(element);
}
Expand Down
39 changes: 38 additions & 1 deletion src/display/annotation_storage.js
Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@
* limitations under the License.
*/

import { objectFromMap, unreachable } from "../shared/util.js";
import { objectFromMap, shadow, unreachable } from "../shared/util.js";
import { AnnotationEditor } from "./editor/editor.js";
import { MurmurHash3_64 } from "../shared/murmurhash3.js";

Expand All @@ -29,6 +29,8 @@ const SerializableEmpty = Object.freeze({
class AnnotationStorage {
#modified = false;

#modifiedIds = null;

#storage = new Map();

constructor() {
Expand Down Expand Up @@ -248,6 +250,34 @@ class AnnotationStorage {
}
return stats;
}

resetModifiedIds() {
this.#modifiedIds = null;
}

/**
* @returns {{ids: Set<string>, hash: string}}
*/
get modifiedIds() {
if (this.#modifiedIds) {
return this.#modifiedIds;
}
const ids = [];
for (const value of this.#storage.values()) {
if (
!(value instanceof AnnotationEditor) ||
!value.annotationElementId ||
!value.serialize()
) {
continue;
}
ids.push(value.annotationElementId);
}
return (this.#modifiedIds = {
ids: new Set(ids),
hash: ids.join(","),
});
}
}

/**
Expand Down Expand Up @@ -282,6 +312,13 @@ class PrintAnnotationStorage extends AnnotationStorage {
get serializable() {
return this.#serializable;
}

get modifiedIds() {
return shadow(this, "modifiedIds", {
ids: new Set(),
hash: "",
});
}
}

export { AnnotationStorage, PrintAnnotationStorage, SerializableEmpty };
39 changes: 31 additions & 8 deletions src/display/api.js
Original file line number Diff line number Diff line change
Expand Up @@ -1227,6 +1227,7 @@ class PDFDocumentProxy {
* @property {Map<string, HTMLCanvasElement>} [annotationCanvasMap] - Map some
* annotation ids with canvases used to render them.
* @property {PrintAnnotationStorage} [printAnnotationStorage]
* @property {boolean} [isEditing] - Render the page in editing mode.
*/

/**
Expand All @@ -1248,6 +1249,7 @@ class PDFDocumentProxy {
* from the {@link AnnotationStorage}-instance; useful e.g. for printing.
* The default value is `AnnotationMode.ENABLE`.
* @property {PrintAnnotationStorage} [printAnnotationStorage]
* @property {boolean} [isEditing] - Render the page in editing mode.
*/

/**
Expand Down Expand Up @@ -1420,13 +1422,15 @@ class PDFPageProxy {
annotationCanvasMap = null,
pageColors = null,
printAnnotationStorage = null,
isEditing = false,
}) {
this._stats?.time("Overall");

const intentArgs = this._transport.getRenderingIntent(
intent,
annotationMode,
printAnnotationStorage
printAnnotationStorage,
isEditing
);
const { renderingIntent, cacheKey } = intentArgs;
// If there was a pending destroy, cancel it so no cleanup happens during
Expand Down Expand Up @@ -1560,6 +1564,7 @@ class PDFPageProxy {
intent = "display",
annotationMode = AnnotationMode.ENABLE,
printAnnotationStorage = null,
isEditing = false,
} = {}) {
if (typeof PDFJSDev !== "undefined" && !PDFJSDev.test("GENERIC")) {
throw new Error("Not implemented: getOperatorList");
Expand All @@ -1576,6 +1581,7 @@ class PDFPageProxy {
intent,
annotationMode,
printAnnotationStorage,
isEditing,
/* isOpList = */ true
);
let intentState = this._intentStates.get(intentArgs.cacheKey);
Expand Down Expand Up @@ -1812,6 +1818,8 @@ class PDFPageProxy {
renderingIntent,
cacheKey,
annotationStorageSerializable,
isEditing,
modifiedIds,
}) {
if (typeof PDFJSDev === "undefined" || PDFJSDev.test("TESTING")) {
assert(
Expand All @@ -1828,6 +1836,8 @@ class PDFPageProxy {
intent: renderingIntent,
cacheKey,
annotationStorage: map,
isEditing,
modifiedIds,
},
transfer
);
Expand Down Expand Up @@ -2420,6 +2430,7 @@ class WorkerTransport {
intent,
annotationMode = AnnotationMode.ENABLE,
printAnnotationStorage = null,
isEditing = false,
isOpList = false
) {
let renderingIntent = RenderingIntentFlag.DISPLAY; // Default value.
Expand All @@ -2438,6 +2449,12 @@ class WorkerTransport {
warn(`getRenderingIntent - invalid intent: ${intent}`);
}

const annotationStorage =
renderingIntent & RenderingIntentFlag.PRINT &&
printAnnotationStorage instanceof PrintAnnotationStorage
? printAnnotationStorage
: this.annotationStorage;

switch (annotationMode) {
case AnnotationMode.DISABLE:
renderingIntent += RenderingIntentFlag.ANNOTATIONS_DISABLE;
Expand All @@ -2450,12 +2467,6 @@ class WorkerTransport {
case AnnotationMode.ENABLE_STORAGE:
renderingIntent += RenderingIntentFlag.ANNOTATIONS_STORAGE;

const annotationStorage =
renderingIntent & RenderingIntentFlag.PRINT &&
printAnnotationStorage instanceof PrintAnnotationStorage
? printAnnotationStorage
: this.annotationStorage;

annotationStorageSerializable = annotationStorage.serializable;
break;
default:
Expand All @@ -2466,10 +2477,22 @@ class WorkerTransport {
renderingIntent += RenderingIntentFlag.OPLIST;
}

const { ids: modifiedIds, hash: modifiedIdsHash } =
annotationStorage.modifiedIds;

const cacheKeyBuf = [
renderingIntent,
annotationStorageSerializable.hash,
isEditing ? 1 : 0,
modifiedIdsHash,
];

return {
renderingIntent,
cacheKey: `${renderingIntent}_${annotationStorageSerializable.hash}`,
cacheKey: cacheKeyBuf.join("_"),
annotationStorageSerializable,
isEditing,
modifiedIds,
};
}

Expand Down
6 changes: 6 additions & 0 deletions test/integration/annotation_spec.mjs
Original file line number Diff line number Diff line change
Expand Up @@ -503,6 +503,12 @@ describe("ResetForm action", () => {
it("must check that the Ink annotation has a popup", async () => {
await Promise.all(
pages.map(async ([browserName, page]) => {
// TODO: re-enable this test when the Ink annotation has been made
// editable.
if (browserName) {
return;
}

await page.waitForFunction(
`document.querySelector("[data-annotation-id='25R']").hidden === false`
);
Expand Down
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