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fix: Fix visual glitch when dragging blocks (#9901)

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This commit is contained in:
Aaron Dodson
2026-05-19 13:34:07 -07:00
committed by GitHub
parent 2f1acb3ef1
commit a34d95d9a5
1 changed files with 32 additions and 31 deletions
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packages/blockly/core/dragging/block_drag_strategy.ts
+32 -31
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@@ -562,40 +562,41 @@ export class BlockDragStrategy implements IDragStrategy {
if (!newCandidate) {
// Position above or below the first/last block.
const connectedBlock = currCandidate?.neighbour.getSourceBlock();
let root = connectedBlock?.getRootBlock() ?? connectedBlock;
if (root === draggingBlock) root = connectedBlock;
const direction = this.getDirectionToNewLocation(
Coordinate.sum(this.startLoc!, delta),
);
const bounds = root?.getBoundingRectangle();
if (!bounds) return;
if (this.moveMode === MoveMode.CONSTRAINED) {
const connectedBlock = currCandidate?.neighbour.getSourceBlock();
let root = connectedBlock?.getRootBlock() ?? connectedBlock;
if (root === draggingBlock) root = connectedBlock;
const direction = this.getDirectionToNewLocation(
Coordinate.sum(this.startLoc!, delta),
);
const bounds = root?.getBoundingRectangle();
if (!bounds) return;
let destination: Coordinate;
switch (direction) {
case Direction.LEFT:
case Direction.UP:
destination = new Coordinate(
bounds.getOrigin().x,
bounds.getOrigin().y -
this.BLOCK_CONNECTION_OFFSET * 2 -
draggingBlock.getHeightWidth().height,
);
break;
case Direction.RIGHT:
case Direction.DOWN:
default:
destination = new Coordinate(
bounds.getOrigin().x,
bounds.getOrigin().y +
bounds.getHeight() +
this.BLOCK_CONNECTION_OFFSET * 2,
);
break;
let destination: Coordinate;
switch (direction) {
case Direction.LEFT:
case Direction.UP:
destination = new Coordinate(
bounds.getOrigin().x,
bounds.getOrigin().y -
this.BLOCK_CONNECTION_OFFSET * 2 -
draggingBlock.getHeightWidth().height,
);
break;
case Direction.RIGHT:
case Direction.DOWN:
default:
destination = new Coordinate(
bounds.getOrigin().x,
bounds.getOrigin().y +
bounds.getHeight() +
this.BLOCK_CONNECTION_OFFSET * 2,
);
break;
}
draggingBlock.moveDuringDrag(destination);
}
draggingBlock.moveDuringDrag(destination);
this.connectionPreviewer?.hidePreview();
this.connectionCandidate = null;
return;