Skip to content

Add panning and zooming #765

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 9, 2025
Merged

Add panning and zooming #765

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
07e8785
Add panning and zooming
JoviDeCroock Oct 7, 2025
64d7734
Merge branch 'main' into panning-and-zooming
JoviDeCroock Oct 9, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
251 changes: 166 additions & 85 deletions extension/src/components/Graph.tsx
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,13 @@ import { updatesStore } from "../models/UpdatesModel";
export function GraphVisualization() {
const updates = updatesStore.updates;
const svgRef = useRef<SVGSVGElement>(null);
const containerRef = useRef<HTMLDivElement>(null);

// Pan and zoom state using signals
const panOffset = useSignal({ x: 0, y: 0 });
const zoom = useSignal(1);
const isPanning = useSignal(false);
const startPan = useSignal({ x: 0, y: 0 });

// Build graph data from updates signal using a computed
const graphData = useComputed<GraphData>(() => {
Expand Down Expand Up @@ -122,6 +129,58 @@ export function GraphVisualization() {
};
});

// Mouse event handlers for panning
const handleMouseDown = (e: MouseEvent) => {
if (e.button !== 0) return; // Only left mouse button
isPanning.value = true;
startPan.value = {
x: e.clientX - panOffset.value.x,
y: e.clientY - panOffset.value.y,
};
};

const handleMouseMove = (e: MouseEvent) => {
if (!isPanning.value) return;
panOffset.value = {
x: e.clientX - startPan.value.x,
y: e.clientY - startPan.value.y,
};
};

const handleMouseUp = () => {
isPanning.value = false;
};

const handleWheel = (e: WheelEvent) => {
e.preventDefault();

const container = containerRef.current;
if (!container) return;

// Get mouse position relative to container
const rect = container.getBoundingClientRect();
const mouseX = e.clientX - rect.left;
const mouseY = e.clientY - rect.top;

// Calculate zoom change
const delta = e.deltaY > 0 ? 0.9 : 1.1;
const newZoom = Math.min(Math.max(0.1, zoom.value * delta), 5);

// Adjust pan offset to zoom towards mouse cursor
const zoomRatio = newZoom / zoom.value;
panOffset.value = {
x: mouseX - (mouseX - panOffset.value.x) * zoomRatio,
y: mouseY - (mouseY - panOffset.value.y) * zoomRatio,
};

zoom.value = newZoom;
};

const resetView = () => {
panOffset.value = { x: 0, y: 0 };
zoom.value = 1;
};

if (graphData.value.nodes.length === 0) {
return (
<div className="graph-empty">
Expand All @@ -142,7 +201,16 @@ export function GraphVisualization() {

return (
<div className="graph-container">
<div className="graph-content">
<div
ref={containerRef}
className="graph-content"
onMouseDown={handleMouseDown}
onMouseMove={handleMouseMove}
onMouseUp={handleMouseUp}
onMouseLeave={handleMouseUp}
onWheel={handleWheel}
style={{ cursor: isPanning.value ? "grabbing" : "grab" }}
>
<svg
ref={svgRef}
className="graph-svg"
Expand All @@ -164,96 +232,109 @@ export function GraphVisualization() {
</marker>
</defs>

{/* Links */}
<g className="links">
{graphData.value.links.map((link, index) => {
const sourceNode = graphData.value.nodes.find(
n => n.id === link.source
);
const targetNode = graphData.value.nodes.find(
n => n.id === link.target
);

if (!sourceNode || !targetNode) return null;

// Use curved paths for better visual flow
const sourceX = sourceNode.x + 25;
const sourceY = sourceNode.y;
const targetX = targetNode.x - 25;
const targetY = targetNode.y;

const midX = sourceX + (targetX - sourceX) * 0.6;
const pathData = `M ${sourceX} ${sourceY} Q ${midX} ${sourceY} ${targetX} ${targetY}`;

return (
<path
key={`link-${index}`}
className="graph-link"
d={pathData}
fill="none"
stroke="#666"
strokeWidth="2"
markerEnd="url(#arrowhead)"
/>
);
})}
</g>
<g
transform={`translate(${panOffset.value.x}, ${panOffset.value.y}) scale(${zoom.value})`}
>
{/* Links */}
<g className="links">
{graphData.value.links.map((link, index) => {
const sourceNode = graphData.value.nodes.find(
n => n.id === link.source
);
const targetNode = graphData.value.nodes.find(
n => n.id === link.target
);

{/* Nodes */}
<g className="nodes">
{graphData.value.nodes.map(node => {
const radius = node.type === "component" ? 40 : 30;
// For circles, use a smaller character limit to fit within the circle with padding
const maxChars = node.type === "component" ? 10 : 7;
const displayName =
node.name.length > maxChars
? node.name.slice(0, maxChars) + "..."
: node.name;
const isTextTruncated = node.name.length > maxChars;

return (
<g key={node.id} className="graph-node-group">
{node.type === "component" ? (
// Rectangular shape for components
<rect
className={`graph-node ${node.type}`}
x={node.x - radius}
y={node.y - 22}
width={radius * 2}
height={44}
rx="10"
>
{isTextTruncated && <title>{node.name}</title>}
</rect>
) : (
// Circular shape for signals/computed/effects
<circle
className={`graph-node ${node.type}`}
cx={node.x}
cy={node.y}
r={radius}
if (!sourceNode || !targetNode) return null;

// Use curved paths for better visual flow
const sourceX = sourceNode.x + 25;
const sourceY = sourceNode.y;
const targetX = targetNode.x - 25;
const targetY = targetNode.y;

const midX = sourceX + (targetX - sourceX) * 0.6;
const pathData = `M ${sourceX} ${sourceY} Q ${midX} ${sourceY} ${targetX} ${targetY}`;

return (
<path
key={`link-${index}`}
className="graph-link"
d={pathData}
fill="none"
stroke="#666"
strokeWidth="2"
markerEnd="url(#arrowhead)"
/>
);
})}
</g>

{/* Nodes */}
<g className="nodes">
{graphData.value.nodes.map(node => {
const radius = node.type === "component" ? 40 : 30;
// For circles, use a smaller character limit to fit within the circle with padding
const maxChars = node.type === "component" ? 10 : 7;
const displayName =
node.name.length > maxChars
? node.name.slice(0, maxChars) + "..."
: node.name;
const isTextTruncated = node.name.length > maxChars;

return (
<g key={node.id} className="graph-node-group">
{node.type === "component" ? (
// Rectangular shape for components
<rect
className={`graph-node ${node.type}`}
x={node.x - radius}
y={node.y - 22}
width={radius * 2}
height={44}
rx="10"
>
{isTextTruncated && <title>{node.name}</title>}
</rect>
) : (
// Circular shape for signals/computed/effects
<circle
className={`graph-node ${node.type}`}
cx={node.x}
cy={node.y}
r={radius}
>
{isTextTruncated && <title>{node.name}</title>}
</circle>
)}
<text
className="graph-text"
x={node.x}
y={node.y + 4}
textAnchor="middle"
dominantBaseline="middle"
fontSize="12"
fontWeight="500"
>
{displayName}
{isTextTruncated && <title>{node.name}</title>}
</circle>
)}
<text
className="graph-text"
x={node.x}
y={node.y + 4}
textAnchor="middle"
dominantBaseline="middle"
fontSize="12"
fontWeight="500"
>
{displayName}
{isTextTruncated && <title>{node.name}</title>}
</text>
</g>
);
})}
</text>
</g>
);
})}
</g>
</g>
</svg>

{/* Reset view button */}
<button
className="graph-reset-button"
onClick={resetView}
title="Reset view"
>
⟲ Reset View
</button>

{/* Legend */}
<div className="graph-legend">
<div className="legend-item">
Expand Down
29 changes: 28 additions & 1 deletion extension/styles/panel.css
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -413,7 +413,8 @@ body {
flex: 1;
position: relative;
background: #fafafa;
overflow: auto;
overflow: hidden;
user-select: none;
}

.graph-svg {
Expand All @@ -422,6 +423,32 @@ body {
min-height: 500px;
}

.graph-reset-button {
position: absolute;
top: 16px;
left: 16px;
background: white;
border: 1px solid #e0e0e0;
border-radius: 4px;
padding: 8px 12px;
font-size: 12px;
font-weight: 500;
cursor: pointer;
box-shadow: 0 2px 4px rgba(0,0,0,0.1);
transition: all 0.2s;
z-index: 10;
}

.graph-reset-button:hover {
background: #f5f5f5;
box-shadow: 0 2px 6px rgba(0,0,0,0.15);
}

.graph-reset-button:active {
background: #eeeeee;
transform: translateY(1px);
}

.graph-node {
cursor: pointer;
transition: all 0.2s;
Expand Down