pdfjs-dist
Version:
Generic build of Mozilla's PDF.js library.
144 lines (143 loc) • 4.2 kB
JavaScript
/**
* @licstart The following is the entire license notice for the
* JavaScript code in this page
*
* Copyright 2022 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* @licend The above is the entire license notice for the
* JavaScript code in this page
*/
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.PDFCursorTools = exports.CursorTool = void 0;
var _pdf = require("../pdf");
var _grab_to_pan = require("./grab_to_pan.js");
var _ui_utils = require("./ui_utils.js");
const CursorTool = {
SELECT: 0,
HAND: 1,
ZOOM: 2
};
exports.CursorTool = CursorTool;
class PDFCursorTools {
constructor({
container,
eventBus,
cursorToolOnLoad = CursorTool.SELECT
}) {
this.container = container;
this.eventBus = eventBus;
this.active = CursorTool.SELECT;
this.previouslyActive = null;
this.handTool = new _grab_to_pan.GrabToPan({
element: this.container
});
this.#addEventListeners();
Promise.resolve().then(() => {
this.switchTool(cursorToolOnLoad);
});
}
get activeTool() {
return this.active;
}
switchTool(tool) {
if (this.previouslyActive !== null) {
return;
}
if (tool === this.active) {
return;
}
const disableActiveTool = () => {
switch (this.active) {
case CursorTool.SELECT:
break;
case CursorTool.HAND:
this.handTool.deactivate();
break;
case CursorTool.ZOOM:
}
};
switch (tool) {
case CursorTool.SELECT:
disableActiveTool();
break;
case CursorTool.HAND:
disableActiveTool();
this.handTool.activate();
break;
case CursorTool.ZOOM:
default:
console.error(`switchTool: "${tool}" is an unsupported value.`);
return;
}
this.active = tool;
this.#dispatchEvent();
}
#dispatchEvent() {
this.eventBus.dispatch("cursortoolchanged", {
source: this,
tool: this.active
});
}
#addEventListeners() {
this.eventBus._on("switchcursortool", evt => {
this.switchTool(evt.tool);
});
let annotationEditorMode = _pdf.AnnotationEditorType.NONE,
presentationModeState = _ui_utils.PresentationModeState.NORMAL;
const disableActive = () => {
const previouslyActive = this.active;
this.switchTool(CursorTool.SELECT);
this.previouslyActive ??= previouslyActive;
};
const enableActive = () => {
const previouslyActive = this.previouslyActive;
if (previouslyActive !== null && annotationEditorMode === _pdf.AnnotationEditorType.NONE && presentationModeState === _ui_utils.PresentationModeState.NORMAL) {
this.previouslyActive = null;
this.switchTool(previouslyActive);
}
};
this.eventBus._on("secondarytoolbarreset", evt => {
if (this.previouslyActive !== null) {
annotationEditorMode = _pdf.AnnotationEditorType.NONE;
presentationModeState = _ui_utils.PresentationModeState.NORMAL;
enableActive();
}
});
this.eventBus._on("annotationeditormodechanged", ({
mode
}) => {
annotationEditorMode = mode;
if (mode === _pdf.AnnotationEditorType.NONE) {
enableActive();
} else {
disableActive();
}
});
this.eventBus._on("presentationmodechanged", ({
state
}) => {
presentationModeState = state;
if (state === _ui_utils.PresentationModeState.NORMAL) {
enableActive();
} else if (state === _ui_utils.PresentationModeState.FULLSCREEN) {
disableActive();
}
});
}
}
exports.PDFCursorTools = PDFCursorTools;