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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | 1x 1x 52x 52x 104x 52x 53x 53x 52x 53x 53x 53x 53x 52x | import { normalizeRect } from 'roosterjs-content-model-dom';
import type { GetVisibleViewport, Rect } from 'roosterjs-content-model-types';
/**
* @internal
* Retrieves the rect of the visible viewport of the editor.
* @param core The EditorCore object
*/
export const getVisibleViewport: GetVisibleViewport = core => {
const scrollContainer = core.domEvent.scrollContainer;
return getIntersectedRect(
scrollContainer == core.physicalRoot
? [scrollContainer]
: [scrollContainer, core.physicalRoot]
);
};
/**
* Get the intersected Rect of elements provided
*
* @example
* The result of the following Elements Rects would be:
{
top: Element2.top,
bottom: Element1.bottom,
left: Element2.left,
right: Element2.right
}
+-------------------------+
| Element 1 |
| +-----------------+ |
| | Element2 | |
| | | |
| | | |
+-------------------------+
| |
+-----------------+
* @param elements Elements to use.
* @param additionalRects additional rects to use
* @returns If the Rect is valid return the rect, if not, return null.
*/
function getIntersectedRect(elements: HTMLElement[], EadditionalRects: Rect[] = []): Rect | null {
const rects = elements
.map(element => normalizeRect(element.getBoundingClientRect()))
.concat(additionalRects)
.filter((rect: Rect | null): rect is Rect => !!rect);
const result: Rect = {
top: Math.max(...rects.map(r => r.top)),
bottom: Math.min(...rects.map(r => r.bottom)),
left: Math.max(...rects.map(r => r.left)),
right: Math.min(...rects.map(r => r.right)),
};
return result.top < result.bottom && result.left < result.right ? result : null;
}
|