File size: 2,843 Bytes
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import { app } from "../../scripts/app.js";
// Shift + drag/resize to snap to grid
app.registerExtension({
name: "Comfy.SnapToGrid",
init() {
// Add setting to control grid size
app.ui.settings.addSetting({
id: "Comfy.SnapToGrid.GridSize",
name: "Grid Size",
type: "slider",
attrs: {
min: 1,
max: 500,
},
tooltip:
"When dragging and resizing nodes while holding shift they will be aligned to the grid, this controls the size of that grid.",
defaultValue: LiteGraph.CANVAS_GRID_SIZE,
onChange(value) {
LiteGraph.CANVAS_GRID_SIZE = +value;
},
});
// After moving a node, if the shift key is down align it to grid
const onNodeMoved = app.canvas.onNodeMoved;
app.canvas.onNodeMoved = function (node) {
const r = onNodeMoved?.apply(this, arguments);
if (app.shiftDown) {
// Ensure all selected nodes are realigned
for (const id in this.selected_nodes) {
this.selected_nodes[id].alignToGrid();
}
}
return r;
};
// When a node is added, add a resize handler to it so we can fix align the size with the grid
const onNodeAdded = app.graph.onNodeAdded;
app.graph.onNodeAdded = function (node) {
const onResize = node.onResize;
node.onResize = function () {
if (app.shiftDown) {
const w = LiteGraph.CANVAS_GRID_SIZE * Math.round(node.size[0] / LiteGraph.CANVAS_GRID_SIZE);
const h = LiteGraph.CANVAS_GRID_SIZE * Math.round(node.size[1] / LiteGraph.CANVAS_GRID_SIZE);
node.size[0] = w;
node.size[1] = h;
}
return onResize?.apply(this, arguments);
};
return onNodeAdded?.apply(this, arguments);
};
// Draw a preview of where the node will go if holding shift and the node is selected
const origDrawNode = LGraphCanvas.prototype.drawNode;
LGraphCanvas.prototype.drawNode = function (node, ctx) {
if (app.shiftDown && this.node_dragged && node.id in this.selected_nodes) {
const x = LiteGraph.CANVAS_GRID_SIZE * Math.round(node.pos[0] / LiteGraph.CANVAS_GRID_SIZE);
const y = LiteGraph.CANVAS_GRID_SIZE * Math.round(node.pos[1] / LiteGraph.CANVAS_GRID_SIZE);
const shiftX = x - node.pos[0];
let shiftY = y - node.pos[1];
let w, h;
if (node.flags.collapsed) {
w = node._collapsed_width;
h = LiteGraph.NODE_TITLE_HEIGHT;
shiftY -= LiteGraph.NODE_TITLE_HEIGHT;
} else {
w = node.size[0];
h = node.size[1];
let titleMode = node.constructor.title_mode;
if (titleMode !== LiteGraph.TRANSPARENT_TITLE && titleMode !== LiteGraph.NO_TITLE) {
h += LiteGraph.NODE_TITLE_HEIGHT;
shiftY -= LiteGraph.NODE_TITLE_HEIGHT;
}
}
const f = ctx.fillStyle;
ctx.fillStyle = "rgba(100, 100, 100, 0.5)";
ctx.fillRect(shiftX, shiftY, w, h);
ctx.fillStyle = f;
}
return origDrawNode.apply(this, arguments);
};
},
});
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