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binding gap and distance and binding highlight tweaks

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This commit is contained in:
dwelle
2025-11-11 18:39:26 +01:00
parent 5bc59d11e3
commit 5c1c74dd24
8 changed files with 581 additions and 709 deletions
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89
packages/element/src/binding.ts
View File

@@ -103,32 +103,25 @@ export type BindingStrategy =
focusPoint?: undefined;
};
export const FIXED_BINDING_DISTANCE = 5;
/** excludes element strokeWidth */
export const BASE_BINDING_GAP = 10;
/** scaled based on zoom when < 1 */
const BASE_BINDING_DISTANCE = Math.max(BASE_BINDING_GAP, 15);
export const BINDING_HIGHLIGHT_THICKNESS = 10;
export const getFixedBindingDistance = (
export const getFixedBindingGap = (
element: ExcalidrawBindableElement,
): number => FIXED_BINDING_DISTANCE + element.strokeWidth / 2;
): number => BASE_BINDING_GAP + element.strokeWidth / 2;
export const maxBindingGap_simple = (
element: ExcalidrawElement,
elementWidth: number,
elementHeight: number,
zoom?: AppState["zoom"],
): number => {
export const maxBindingDistance_simple = (zoom?: AppState["zoom"]): number => {
const zoomValue = zoom?.value && zoom.value < 1 ? zoom.value : 1;
// Aligns diamonds with rectangles
const shapeRatio = element.type === "diamond" ? 1 / Math.sqrt(2) : 1;
const smallerDimension = shapeRatio * Math.min(elementWidth, elementHeight);
return Math.max(
16,
// bigger bindable boundary for bigger elements
Math.min(0.25 * smallerDimension, 32),
// keep in sync with the zoomed highlight
BINDING_HIGHLIGHT_THICKNESS / zoomValue + FIXED_BINDING_DISTANCE,
return clamp(
// reducing zoom impact so that the diff between binding distance and
// binding gap is kept to minimum when possible
BASE_BINDING_DISTANCE / (zoomValue * 1.5),
BASE_BINDING_DISTANCE,
BASE_BINDING_DISTANCE * 2,
);
};
@@ -247,8 +240,7 @@ const bindingStrategyForElbowArrowEndpointDragging = (
globalPoint,
elements,
elementsMap,
(element) =>
maxBindingGap_simple(element, element.width, element.height, zoom),
(element) => maxBindingDistance_simple(zoom),
);
const current = hit
@@ -667,7 +659,7 @@ const getBindingStrategyForDraggingBindingElementEndpoints_simple = (
globalPoint,
elements,
elementsMap,
(e) => maxBindingGap_simple(e, e.width, e.height, appState.zoom),
(e) => maxBindingDistance_simple(appState.zoom),
);
const pointInElement = hit && isPointInElement(globalPoint, hit, elementsMap);
const otherBindableElement = otherBinding
@@ -1197,12 +1189,7 @@ const getDistanceForBinding = (
zoom?: AppState["zoom"],
) => {
const distance = distanceToElement(bindableElement, elementsMap, point);
const bindDistance = maxBindingGap_simple(
bindableElement,
bindableElement.width,
bindableElement.height,
zoom,
);
const bindDistance = maxBindingDistance_simple(zoom);
return distance > bindDistance ? null : distance;
};
@@ -1272,7 +1259,7 @@ export const bindPointToSnapToElementOutline = (
bindableElement,
elementsMap,
intersector,
getFixedBindingDistance(bindableElement),
getFixedBindingGap(bindableElement),
).sort(pointDistanceSq)[0];
if (!intersection) {
@@ -1294,7 +1281,7 @@ export const bindPointToSnapToElementOutline = (
bindableElement,
elementsMap,
anotherIntersector,
FIXED_BINDING_DISTANCE,
BASE_BINDING_GAP,
).sort(pointDistanceSq)[0];
}
} else {
@@ -1302,7 +1289,7 @@ export const bindPointToSnapToElementOutline = (
vectorNormalize(vectorFromPoint(edgePoint, adjacentPoint)),
pointDistance(edgePoint, adjacentPoint) +
Math.max(bindableElement.width, bindableElement.height) +
getFixedBindingDistance(bindableElement) * 2,
getFixedBindingGap(bindableElement) * 2,
);
const intersector =
customIntersector ??
@@ -1317,7 +1304,7 @@ export const bindPointToSnapToElementOutline = (
bindableElement,
elementsMap,
intersector,
getFixedBindingDistance(bindableElement),
getFixedBindingGap(bindableElement),
).sort(
(g, h) =>
pointDistanceSq(g, adjacentPoint) -
@@ -1346,15 +1333,15 @@ export const avoidRectangularCorner = (
if (nonRotatedPoint[0] < element.x && nonRotatedPoint[1] < element.y) {
// Top left
if (nonRotatedPoint[1] - element.y > -getFixedBindingDistance(element)) {
if (nonRotatedPoint[1] - element.y > -getFixedBindingGap(element)) {
return pointRotateRads<GlobalPoint>(
pointFrom(element.x - getFixedBindingDistance(element), element.y),
pointFrom(element.x - getFixedBindingGap(element), element.y),
center,
element.angle,
);
}
return pointRotateRads(
pointFrom(element.x, element.y - getFixedBindingDistance(element)),
pointFrom(element.x, element.y - getFixedBindingGap(element)),
center,
element.angle,
);
@@ -1363,11 +1350,11 @@ export const avoidRectangularCorner = (
nonRotatedPoint[1] > element.y + element.height
) {
// Bottom left
if (nonRotatedPoint[0] - element.x > -getFixedBindingDistance(element)) {
if (nonRotatedPoint[0] - element.x > -getFixedBindingGap(element)) {
return pointRotateRads(
pointFrom(
element.x,
element.y + element.height + getFixedBindingDistance(element),
element.y + element.height + getFixedBindingGap(element),
),
center,
element.angle,
@@ -1375,7 +1362,7 @@ export const avoidRectangularCorner = (
}
return pointRotateRads(
pointFrom(
element.x - getFixedBindingDistance(element),
element.x - getFixedBindingGap(element),
element.y + element.height,
),
center,
@@ -1388,12 +1375,12 @@ export const avoidRectangularCorner = (
// Bottom right
if (
nonRotatedPoint[0] - element.x <
element.width + getFixedBindingDistance(element)
element.width + getFixedBindingGap(element)
) {
return pointRotateRads(
pointFrom(
element.x + element.width,
element.y + element.height + getFixedBindingDistance(element),
element.y + element.height + getFixedBindingGap(element),
),
center,
element.angle,
@@ -1401,7 +1388,7 @@ export const avoidRectangularCorner = (
}
return pointRotateRads(
pointFrom(
element.x + element.width + getFixedBindingDistance(element),
element.x + element.width + getFixedBindingGap(element),
element.y + element.height,
),
center,
@@ -1414,12 +1401,12 @@ export const avoidRectangularCorner = (
// Top right
if (
nonRotatedPoint[0] - element.x <
element.width + getFixedBindingDistance(element)
element.width + getFixedBindingGap(element)
) {
return pointRotateRads(
pointFrom(
element.x + element.width,
element.y - getFixedBindingDistance(element),
element.y - getFixedBindingGap(element),
),
center,
element.angle,
@@ -1427,7 +1414,7 @@ export const avoidRectangularCorner = (
}
return pointRotateRads(
pointFrom(
element.x + element.width + getFixedBindingDistance(element),
element.x + element.width + getFixedBindingGap(element),
element.y,
),
center,
@@ -1454,7 +1441,7 @@ const snapToMid = (
const horizontalThreshold = clamp(tolerance * width, 5, 80);
// Too close to the center makes it hard to resolve direction precisely
if (pointDistance(center, nonRotated) < getFixedBindingDistance(element)) {
if (pointDistance(center, nonRotated) < getFixedBindingGap(element)) {
return p;
}
@@ -1465,7 +1452,7 @@ const snapToMid = (
) {
// LEFT
return pointRotateRads<GlobalPoint>(
pointFrom(x - getFixedBindingDistance(element), center[1]),
pointFrom(x - getFixedBindingGap(element), center[1]),
center,
angle,
);
@@ -1476,7 +1463,7 @@ const snapToMid = (
) {
// TOP
return pointRotateRads(
pointFrom(center[0], y - getFixedBindingDistance(element)),
pointFrom(center[0], y - getFixedBindingGap(element)),
center,
angle,
);
@@ -1487,7 +1474,7 @@ const snapToMid = (
) {
// RIGHT
return pointRotateRads(
pointFrom(x + width + getFixedBindingDistance(element), center[1]),
pointFrom(x + width + getFixedBindingGap(element), center[1]),
center,
angle,
);
@@ -1498,12 +1485,12 @@ const snapToMid = (
) {
// DOWN
return pointRotateRads(
pointFrom(center[0], y + height + getFixedBindingDistance(element)),
pointFrom(center[0], y + height + getFixedBindingGap(element)),
center,
angle,
);
} else if (element.type === "diamond") {
const distance = getFixedBindingDistance(element);
const distance = getFixedBindingGap(element);
const topLeft = pointFrom<GlobalPoint>(
x + width / 4 - distance,
y + height / 4 - distance,

25
packages/element/src/elbowArrow.ts
View File

@@ -26,11 +26,11 @@ import type { AppState } from "@excalidraw/excalidraw/types";
import {
bindPointToSnapToElementOutline,
FIXED_BINDING_DISTANCE,
BASE_BINDING_GAP,
getHeadingForElbowArrowSnap,
getGlobalFixedPointForBindableElement,
getFixedBindingDistance,
maxBindingGap_simple,
getFixedBindingGap,
maxBindingDistance_simple,
} from "./binding";
import { distanceToElement } from "./distance";
import {
@@ -1304,8 +1304,8 @@ const getElbowArrowData = (
offsetFromHeading(
startHeading,
arrow.startArrowhead
? getFixedBindingDistance(hoveredStartElement) * 6
: getFixedBindingDistance(hoveredStartElement) * 2,
? getFixedBindingGap(hoveredStartElement) * 6
: getFixedBindingGap(hoveredStartElement) * 2,
1,
),
)
@@ -1317,8 +1317,8 @@ const getElbowArrowData = (
offsetFromHeading(
endHeading,
arrow.endArrowhead
? getFixedBindingDistance(hoveredEndElement) * 6
: getFixedBindingDistance(hoveredEndElement) * 2,
? getFixedBindingGap(hoveredEndElement) * 6
: getFixedBindingGap(hoveredEndElement) * 2,
1,
),
)
@@ -1365,8 +1365,8 @@ const getElbowArrowData = (
? 0
: BASE_PADDING -
(arrow.startArrowhead
? FIXED_BINDING_DISTANCE * 6
: FIXED_BINDING_DISTANCE * 2),
? BASE_BINDING_GAP * 6
: BASE_BINDING_GAP * 2),
BASE_PADDING,
),
boundsOverlap
@@ -1381,8 +1381,8 @@ const getElbowArrowData = (
? 0
: BASE_PADDING -
(arrow.endArrowhead
? FIXED_BINDING_DISTANCE * 6
: FIXED_BINDING_DISTANCE * 2),
? BASE_BINDING_GAP * 6
: BASE_BINDING_GAP * 2),
BASE_PADDING,
),
boundsOverlap,
@@ -2274,8 +2274,7 @@ const getHoveredElement = (
origPoint,
elements,
elementsMap,
(element) =>
maxBindingGap_simple(element, element.width, element.height, zoom),
(element) => maxBindingDistance_simple(zoom),
);
};

5
packages/element/src/utils.ts
View File

@@ -1,4 +1,5 @@
import {
debugDrawLine,
DEFAULT_ADAPTIVE_RADIUS,
DEFAULT_PROPORTIONAL_RADIUS,
invariant,
@@ -598,5 +599,9 @@ export const projectFixedPointOntoDiagonal = (
p = p1 || p2 || null;
}
debugDrawLine(diagonalOne, { color: "purple", permanent: false });
debugDrawLine(diagonalTwo, { color: "purple", permanent: false });
debugDrawLine(intersector, { color: "orange", permanent: false });
return p && isPointInElement(p, element, elementsMap) ? p : null;
};

11
packages/element/tests/__snapshots__/linearElementEditor.test.tsx.snap
View File

@@ -44,14 +44,3 @@ exports[`Test Linear Elements > Test bound text element > should resize and posi
"Online whiteboard
collaboration made easy"
`;
exports[`Test Linear Elements > Test bound text element > should wrap the bound text when arrow bound container moves 1`] = `
"Online whiteboard
collaboration made easy"
`;
exports[`Test Linear Elements > Test bound text element > should wrap the bound text when arrow bound container moves 2`] = `
"Online whiteboard
collaboration made
easy"
`;