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// Use integer coordinate values to ensure that target is left in a pixel-aligned
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// position. Mouse movement could have subpixel precision, yielding a fractional
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if (sensingPoints) { // edge/corner detection when dragging via the touch overlay
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if (sensingPoints.topLeft.x < priv.triggerArea && sensingPoints.topLeft.y < PanelState.panelHeight + priv.triggerArea