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Add zooming in curve editor relative to the mouse cursor and adapt to curve size

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Wojtek Figat
2024-11-29 14:33:46 +01:00
parent 8ee011c7f5
commit 9b43f2f03a
2 changed files with 15 additions and 7 deletions
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18
Source/Editor/GUI/CurveEditor.Contents.cs
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@@ -516,17 +516,25 @@ namespace FlaxEditor.GUI
var zoomAlt = RootWindow.GetKey(KeyboardKeys.Shift);
if (_editor.EnableZoom != UseMode.Off && IsMouseOver && !_leftMouseDown && (zoom || zoomAlt))
{
// TODO: preserve the view center point for easier zooming
var scale = new Float2(delta * 0.1f);
// Cache mouse location in curve-space
var viewRect = _editor._mainPanel.GetClientArea();
var locationInKeyframes = PointToKeyframes(location, ref viewRect);
var locationInEditorBefore = _editor.PointFromKeyframes(locationInKeyframes, ref viewRect);
// Scale relative to the curve size
var scale = new Float2(delta * 0.1f);
_editor._mainPanel.GetDesireClientArea(out var mainPanelArea);
var curveScale = mainPanelArea.Size / _editor._contents.Size;
scale *= curveScale;
if (zoomAlt)
scale.X = 0; // Scale Y axis only
_editor.ViewScale += GetUseModeMask(_editor.EnableZoom) * scale;
scale *= GetUseModeMask(_editor.EnableZoom); // Mask scale depending on allowed usage
_editor.ViewScale += scale;
// Zoom towards the mouse position
var locationInEditorAfter = _editor.PointFromKeyframes(locationInKeyframes, ref viewRect);
var locationInEditorDelta = locationInEditorAfter - locationInEditorBefore;
_editor.ViewOffset -= locationInEditorDelta;
return true;
}