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Support negative resize for multiple points line/arrow (#1237)

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* Support negative resize for multiple points line

* prettier

* Fix an issue with width or height becoming zero
This commit is contained in:
fujimoto kyosuke
2020-04-09 18:53:12 +09:00
committed by GitHub
parent d5899f6ca0
commit b1ed5b4cdc
3 changed files with 10 additions and 36 deletions
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37
src/element/resizeElements.ts
View File

@@ -144,7 +144,7 @@ export function resizeElements(
width,
height,
...adjustXYWithRotation("nw", element, deltaX, dY, angle),
...(isLinearElement(element) && width >= 0 && height >= 0
...(isLinearElement(element) && width !== 0 && height !== 0
? {
points: rescalePoints(
0,
@@ -176,7 +176,7 @@ export function resizeElements(
width,
height,
...adjustXYWithRotation("ne", element, deltaX, dY, angle),
...(isLinearElement(element) && width >= 0 && height >= 0
...(isLinearElement(element) && width !== 0 && height !== 0
? {
points: rescalePoints(
0,
@@ -208,7 +208,7 @@ export function resizeElements(
width,
height,
...adjustXYWithRotation("sw", element, deltaX, dY, angle),
...(isLinearElement(element) && width >= 0 && height >= 0
...(isLinearElement(element) && width !== 0 && height !== 0
? {
points: rescalePoints(
0,
@@ -240,7 +240,7 @@ export function resizeElements(
width,
height,
...adjustXYWithRotation("se", element, deltaX, dY, angle),
...(isLinearElement(element) && width >= 0 && height >= 0
...(isLinearElement(element) && width !== 0 && height !== 0
? {
points: rescalePoints(
0,
@@ -255,12 +255,7 @@ export function resizeElements(
case "n": {
const height = element.height - deltaY;
if (isLinearElement(element)) {
if (element.points.length > 2 && height <= 0) {
// Someday we should implement logic to flip the shape.
// But for now, just stop.
break;
}
if (isLinearElement(element) && height !== 0) {
mutateElement(element, {
height,
...adjustXYWithRotation("n", element, 0, deltaY, angle),
@@ -278,13 +273,7 @@ export function resizeElements(
case "w": {
const width = element.width - deltaX;
if (isLinearElement(element)) {
if (element.points.length > 2 && width <= 0) {
// Someday we should implement logic to flip the shape.
// But for now, just stop.
break;
}
if (isLinearElement(element) && width !== 0) {
mutateElement(element, {
width,
...adjustXYWithRotation("w", element, deltaX, 0, angle),
@@ -301,12 +290,7 @@ export function resizeElements(
case "s": {
const height = element.height + deltaY;
if (isLinearElement(element)) {
if (element.points.length > 2 && height <= 0) {
// Someday we should implement logic to flip the shape.
// But for now, just stop.
break;
}
if (isLinearElement(element) && height !== 0) {
mutateElement(element, {
height,
...adjustXYWithRotation("s", element, 0, deltaY, angle),
@@ -323,12 +307,7 @@ export function resizeElements(
case "e": {
const width = element.width + deltaX;
if (isLinearElement(element)) {
if (element.points.length > 2 && width <= 0) {
// Someday we should implement logic to flip the shape.
// But for now, just stop.
break;
}
if (isLinearElement(element) && width !== 0) {
mutateElement(element, {
width,
...adjustXYWithRotation("e", element, deltaX, 0, angle),

3
src/element/resizeTest.ts
View File

@@ -10,7 +10,6 @@ import {
handlerRectangles,
} from "./handlerRectangles";
import { AppState } from "../types";
import { isLinearElement } from "./typeChecks";
type HandlerRectanglesRet = keyof ReturnType<typeof handlerRectangles>;
@@ -155,7 +154,7 @@ export function normalizeResizeHandle(
element: ExcalidrawElement,
resizeHandle: HandlerRectanglesRet,
): HandlerRectanglesRet {
if ((element.width >= 0 && element.height >= 0) || isLinearElement(element)) {
if (element.width >= 0 && element.height >= 0) {
return resizeHandle;
}

6
src/element/sizeHelpers.ts
View File

@@ -81,11 +81,7 @@ export function resizePerfectLineForNWHandler(
export function normalizeDimensions(
element: ExcalidrawElement | null,
): element is ExcalidrawElement {
if (
!element ||
(element.width >= 0 && element.height >= 0) ||
isLinearElement(element)
) {
if (!element || (element.width >= 0 && element.height >= 0)) {
return false;
}