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Recompute page-space origin coordinates every gesture #8

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Recompute page-space origin coordinates every gesture #8

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22 changes: 15 additions & 7 deletions src/TriangleColorPicker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -188,17 +188,25 @@ export class TriangleColorPicker extends React.PureComponent {

componentWillMount() {
const handleColorChange = ({ x, y }) => {
if (this._changingHColor) {
this._handleHColorChange({ x, y })
} else {
this._handleSVColorChange({ x, y })
if (this._changingHColor !== undefined) {
if (this._changingHColor) {
this._handleHColorChange({ x, y })
} else {
this._handleSVColorChange({ x, y })
}
}
}
this._pickerResponder = createPanResponder({
onStart: ({ x, y }) => {
const { s, v } = this._computeColorFromTriangle({ x, y })
this._changingHColor = s > 1 || s < 0 || v > 1 || v < 0
handleColorChange({ x, y })
this._changingHColor = undefined
this.refs.pickerContainer && this.refs.pickerContainer.measure((measureX, measureY, width, height, pageX, pageY) => {
// picker position in the screen
this._pageX = pageX
this._pageY = pageY
const { s, v } = this._computeColorFromTriangle({ x, y })
this._changingHColor = s > 1 || s < 0 || v > 1 || v < 0
handleColorChange({ x, y })
})
},
onMove: handleColorChange,
})
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