@hmcts/annotation-ui-lib
Version:
PDF Viewer and ability to highlight text with and comment tracking
158 lines • 14.5 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
export class Utils {
/**
* @param {?} rectangles
* @return {?}
*/
buildLineRectangle(rectangles) {
this.sortByY(rectangles);
/** @type {?} */
const lowestY = rectangles[0].y;
/** @type {?} */
const lineHeight = rectangles[0].height;
this.sortByX(rectangles);
/** @type {?} */
const lowestX = rectangles[0].x;
/** @type {?} */
const upperX = rectangles[rectangles.length - 1].x;
/** @type {?} */
const width = rectangles[rectangles.length - 1].width;
/** @type {?} */
const rectangle = {
y: lowestY,
x: lowestX,
width: (upperX - lowestX) + width,
height: lineHeight
};
return rectangle;
}
/**
* @param {?} annotationRectangles
* @param {?} generatedRectangles
* @return {?}
*/
generateRectanglePerLine(annotationRectangles, generatedRectangles) {
this.sortByY(annotationRectangles);
/** @type {?} */
const highestY = annotationRectangles[annotationRectangles.length - 1].y;
/** @type {?} */
const lowestY = annotationRectangles[0].y;
/** @type {?} */
const lineHeight = this.getAnnotationLineHeight(annotationRectangles);
if (this.difference(highestY, lowestY) > lineHeight) {
/** @type {?} */
const currentLineRectangles = annotationRectangles.filter(rectangle => rectangle.y <= (lowestY + lineHeight));
/** @type {?} */
const nextLineRectangles = annotationRectangles.filter(rectangle => rectangle.y > (lowestY + lineHeight));
generatedRectangles.push(this.buildLineRectangle(currentLineRectangles));
this.generateRectanglePerLine(nextLineRectangles, generatedRectangles);
}
else {
generatedRectangles.push(this.buildLineRectangle(annotationRectangles));
}
}
/**
* @param {?} rectangles
* @return {?}
*/
getAnnotationLineHeight(rectangles) {
return rectangles[0].height;
}
/**
* @param {?} rectangles
* @param {?=} lowest
* @return {?}
*/
sortByY(rectangles, lowest = true) {
rectangles.sort(function (a, b) {
/** @type {?} */
const keyA = a.y;
/** @type {?} */
const keyB = b.y;
if (keyA < keyB) {
return lowest ? -1 : 1;
}
if (keyA > keyB) {
return lowest ? 1 : -1;
}
return 0;
});
}
/**
* @param {?} rectangles
* @param {?=} lowest
* @return {?}
*/
sortByX(rectangles, lowest = true) {
rectangles.sort(function (a, b) {
/** @type {?} */
const keyA = a.x;
/** @type {?} */
const keyB = b.x;
if (keyA < keyB) {
return lowest ? -1 : 1;
}
if (keyA > keyB) {
return lowest ? 1 : -1;
}
return 0;
});
}
/**
* @param {?} a
* @param {?} b
* @return {?}
*/
sortByLinePosition(a, b) {
this.sortByX(a);
this.sortByX(b);
return (a[0].x > b[0].x) ? 1 : -1;
}
/**
* @param {?} a
* @param {?} b
* @return {?}
*/
difference(a, b) { return Math.abs(a - b); }
/**
* @param {?} event
* @return {?}
*/
clickIsHighlight(event) {
/** @type {?} */
const target = (/** @type {?} */ (event.target));
/** @type {?} */
const isHighlight = target.firstElementChild;
if (isHighlight == null) {
return false;
}
else if (isHighlight.id.includes('pdf-annotate-screenreader')) {
return true;
}
else {
return false;
}
}
/**
* @param {?} event
* @return {?}
*/
getClickedPage(event) {
/** @type {?} */
let currentParent = event.target;
for (let step = 0; step < 5; step++) {
if (currentParent.parentNode != null) {
/** @type {?} */
const pageNumber = currentParent.parentNode.getAttribute('data-page-number');
if (pageNumber != null) {
return parseInt(pageNumber, null);
}
currentParent = currentParent.parentNode;
}
}
}
}
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1].x;\n        const width = rectangles[rectangles.length - 1].width;\n\n        const rectangle = {\n            y: lowestY,\n            x: lowestX,\n            width: (upperX - lowestX) + width,\n            height: lineHeight\n        };\n        return rectangle;\n    }\n\n    generateRectanglePerLine(annotationRectangles: Rectangle[], generatedRectangles: Rectangle[]) {\n\n        this.sortByY(annotationRectangles);\n        const highestY = annotationRectangles[annotationRectangles.length - 1].y;\n        const lowestY = annotationRectangles[0].y;\n        const lineHeight = this.getAnnotationLineHeight(annotationRectangles);\n\n        if (this.difference(highestY, lowestY) > lineHeight) {\n            const currentLineRectangles = annotationRectangles.filter(rectangle => rectangle.y <= (lowestY + lineHeight));\n            const nextLineRectangles = annotationRectangles.filter(rectangle => rectangle.y > (lowestY + lineHeight));\n            generatedRectangles.push(this.buildLineRectangle(currentLineRectangles));\n            this.generateRectanglePerLine(nextLineRectangles, generatedRectangles);\n        } else {\n            generatedRectangles.push(this.buildLineRectangle(annotationRectangles));\n        }\n    }\n\n    getAnnotationLineHeight(rectangles: Rectangle[]): number {\n        return rectangles[0].height;\n    }\n\n    sortByY(rectangles: Rectangle[], lowest = true) {\n        rectangles.sort(\n            function (a, b) {\n                const keyA = a.y,\n                    keyB = b.y;\n                if (keyA < keyB) { return lowest ? -1 : 1; }\n                if (keyA > keyB) { return lowest ? 1 : -1; }\n                return 0;\n            });\n    }\n\n    sortByX(rectangles: Rectangle[], lowest = true) {\n        rectangles.sort(\n            function (a, b) {\n                const keyA = a.x,\n                    keyB = b.x;\n                if (keyA < keyB) { return lowest ? -1 : 1; }\n                if (keyA > keyB) { return lowest ? 1 : -1; }\n                return 0;\n            });\n    }\n\n    sortByLinePosition(a: Rectangle[], b: Rectangle[]): number {\n        this.sortByX(a);\n        this.sortByX(b);\n        return (a[0].x > b[0].x) ? 1 : -1;\n    }\n\n    difference(a: number, b: number): number { return Math.abs(a - b); }\n\n    clickIsHighlight(event: MouseEvent): boolean {\n        const target = <HTMLElement>event.target;\n        const isHighlight = target.firstElementChild;\n        if (isHighlight == null) {\n            return false;\n        } else if (isHighlight.id.includes('pdf-annotate-screenreader')) {\n            return true;\n        } else {\n            return false;\n        }\n    }\n\n    getClickedPage(event: any): number {\n        let currentParent = event.target;\n        for (let step = 0; step < 5; step++) {\n            if (currentParent.parentNode != null) {\n                const pageNumber = currentParent.parentNode.getAttribute('data-page-number');\n                if (pageNumber != null) {\n                    return parseInt(pageNumber, null);\n                }\n                currentParent = currentParent.parentNode;\n            }\n        }\n    }\n}\n"]}