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Fix drag n drop for see whole graph button #61

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Merged
sim51 merged 3 commits into from
Apr 3, 2024
Merged

Fix drag n drop for see whole graph button #61

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17acec6
Fixed issue in DragNDrop example code where See whole graph button in…
willwur Mar 16, 2024
2be3c61
Removed function call preventSigmaDefault(), which is not available f…
willwur Mar 16, 2024
5365071
Fixes bug for getting the coordinates to a touch event.
willwur Mar 16, 2024
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18 changes: 12 additions & 6 deletions website/src/components/example/DragNdrop.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -22,11 +22,15 @@ const DragNdrop: FC = () => {
if (draggedNode) {
setDraggedNode(null);
sigma.getGraph().removeNodeAttribute(draggedNode, "highlighted");

// Reset the bounding box around the whole graph
// so that a "See whole graph" Zoom control button
// would include dragged nodes if pressed.
sigma.setCustomBBox(sigma.getBBox());
}
},
mousedown: (e) => {
// Disable the autoscale at the first down interaction
if (!sigma.getCustomBBox()) sigma.setCustomBBox(sigma.getBBox());

},
mousemove: (e) => {
if (draggedNode) {
Expand All @@ -45,21 +49,23 @@ const DragNdrop: FC = () => {
if (draggedNode) {
setDraggedNode(null);
sigma.getGraph().removeNodeAttribute(draggedNode, "highlighted");
// Reset the bounding box around the whole graph
// so that a "See whole graph" Zoom control button
// would include dragged nodes if pressed.
sigma.setCustomBBox(sigma.getBBox());
}
},
touchdown: (e) => {
// Disable the autoscale at the first down interaction
if (!sigma.getCustomBBox()) sigma.setCustomBBox(sigma.getBBox());

},
touchmove: (e) => {
if (draggedNode) {
// Get new position of node
const pos = sigma.viewportToGraph(e);
const pos = sigma.viewportToGraph(e.touches[0]);
sigma.getGraph().setNodeAttribute(draggedNode, "x", pos.x);
sigma.getGraph().setNodeAttribute(draggedNode, "y", pos.y);

// Prevent sigma to move camera:
e.preventSigmaDefault();
e.original.preventDefault();
e.original.stopPropagation();
}
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