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author | Steve Klebanoff <steve.klebanoff@gmail.com> | 2018-12-15 07:58:34 +0800 |
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committer | Steve Klebanoff <steve.klebanoff@gmail.com> | 2018-12-15 07:58:34 +0800 |
commit | 8c5ff663a9521b3dcefbfd1bc9ef3fa2f4cfe023 (patch) | |
tree | 608b52c60fb24777274de78174e69b88a75362e0 /packages/instant/src/components/scaling_input.tsx | |
parent | 67422db4bd0b194296a1a584af7ead089e281715 (diff) | |
parent | 6d45beccad44e86ddd692d0cf54c09c29c5d9daf (diff) | |
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Merge branch 'development' into feature/instant/usd-eth-toggle
Diffstat (limited to 'packages/instant/src/components/scaling_input.tsx')
-rw-r--r-- | packages/instant/src/components/scaling_input.tsx | 93 |
1 files changed, 39 insertions, 54 deletions
diff --git a/packages/instant/src/components/scaling_input.tsx b/packages/instant/src/components/scaling_input.tsx index 791692257..00aea37da 100644 --- a/packages/instant/src/components/scaling_input.tsx +++ b/packages/instant/src/components/scaling_input.tsx @@ -1,3 +1,4 @@ +import { ObjectMap } from '@0x/types'; import * as _ from 'lodash'; import * as React from 'react'; @@ -13,10 +14,15 @@ export enum ScalingInputPhase { export interface ScalingSettings { percentageToReduceFontSizePerCharacter: number; - constantPxToIncreaseWidthPerCharacter: number; + // 1ch = the width of the 0 chararacter. + // Allow to customize 'char' length for different characters. + characterWidthOverrides: ObjectMap<number>; + // How much room to leave to the right of the scaling input. + additionalInputSpaceInCh: number; } export interface ScalingInputProps { + type?: string; textLengthThreshold: number; maxFontSizePx: number; value: string; @@ -31,32 +37,29 @@ export interface ScalingInputProps { hasAutofocus: boolean; } -export interface ScalingInputState { - inputWidthPxAtPhaseChange?: number; -} - export interface ScalingInputSnapshot { inputWidthPx: number; } // These are magic numbers that were determined experimentally. const defaultScalingSettings: ScalingSettings = { - percentageToReduceFontSizePerCharacter: 0.125, - constantPxToIncreaseWidthPerCharacter: 4, + percentageToReduceFontSizePerCharacter: 0.1, + characterWidthOverrides: { + '1': 0.7, + '.': 0.4, + }, + additionalInputSpaceInCh: 0.4, }; -export class ScalingInput extends React.Component<ScalingInputProps, ScalingInputState> { +export class ScalingInput extends React.Component<ScalingInputProps> { public static defaultProps = { onChange: util.boundNoop, onFontSizeChange: util.boundNoop, - maxLength: 7, + maxLength: 9, scalingSettings: defaultScalingSettings, isDisabled: false, hasAutofocus: false, }; - public state: ScalingInputState = { - inputWidthPxAtPhaseChange: undefined, - }; private readonly _inputRef = React.createRef<HTMLInputElement>(); public static getPhase(textLengthThreshold: number, value: string): ScalingInputPhase { if (value.length <= textLengthThreshold) { @@ -93,36 +96,15 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu scalingSettings.percentageToReduceFontSizePerCharacter, ); } - public getSnapshotBeforeUpdate(): ScalingInputSnapshot { - return { - inputWidthPx: this._getInputWidthInPx(), - }; - } public componentDidMount(): void { // Trigger an initial notification of the calculated fontSize. const currentPhase = ScalingInput.getPhaseFromProps(this.props); const currentFontSize = ScalingInput.calculateFontSizeFromProps(this.props, currentPhase); this.props.onFontSizeChange(currentFontSize); } - public componentDidUpdate( - prevProps: ScalingInputProps, - prevState: ScalingInputState, - snapshot: ScalingInputSnapshot, - ): void { + public componentDidUpdate(prevProps: ScalingInputProps): void { const prevPhase = ScalingInput.getPhaseFromProps(prevProps); const curPhase = ScalingInput.getPhaseFromProps(this.props); - // if we went from fixed to scaling, save the width from the transition - if (prevPhase !== ScalingInputPhase.ScalingFontSize && curPhase === ScalingInputPhase.ScalingFontSize) { - this.setState({ - inputWidthPxAtPhaseChange: snapshot.inputWidthPx, - }); - } - // if we went from scaling to fixed, revert back to scaling using `ch` - if (prevPhase === ScalingInputPhase.ScalingFontSize && curPhase !== ScalingInputPhase.ScalingFontSize) { - this.setState({ - inputWidthPxAtPhaseChange: undefined, - }); - } const prevFontSize = ScalingInput.calculateFontSizeFromProps(prevProps, prevPhase); const curFontSize = ScalingInput.calculateFontSizeFromProps(this.props, curPhase); // If font size has changed, notify. @@ -131,13 +113,14 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu } } public render(): React.ReactNode { - const { hasAutofocus, isDisabled, fontColor, onChange, placeholder, value, maxLength } = this.props; + const { type, hasAutofocus, isDisabled, fontColor, placeholder, value, maxLength } = this.props; const phase = ScalingInput.getPhaseFromProps(this.props); return ( <Input + type={type} ref={this._inputRef as any} fontColor={fontColor} - onChange={onChange} + onChange={this._handleChange} value={value} placeholder={placeholder} fontSize={`${this._calculateFontSize(phase)}px`} @@ -149,32 +132,34 @@ export class ScalingInput extends React.Component<ScalingInputProps, ScalingInpu ); } private readonly _calculateWidth = (phase: ScalingInputPhase): string => { - const { value, textLengthThreshold, scalingSettings } = this.props; + const { value, scalingSettings } = this.props; if (_.isEmpty(value)) { return `${this.props.emptyInputWidthCh}ch`; } - switch (phase) { - case ScalingInputPhase.FixedFontSize: - return `${value.length}ch`; - case ScalingInputPhase.ScalingFontSize: - const { inputWidthPxAtPhaseChange } = this.state; - if (!_.isUndefined(inputWidthPxAtPhaseChange)) { - const charactersOverMax = value.length - textLengthThreshold; - const scalingAmount = scalingSettings.constantPxToIncreaseWidthPerCharacter * charactersOverMax; - const width = inputWidthPxAtPhaseChange + scalingAmount; - return `${width}px`; + const lengthInCh = _.reduce( + value.split(''), + (sum, char) => { + const widthOverride = scalingSettings.characterWidthOverrides[char]; + if (!_.isUndefined(widthOverride)) { + // tslint is confused + // tslint:disable-next-line:restrict-plus-operands + return sum + widthOverride; } - return `${textLengthThreshold}ch`; - } + return sum + 1; + }, + scalingSettings.additionalInputSpaceInCh, + ); + return `${lengthInCh}ch`; }; private readonly _calculateFontSize = (phase: ScalingInputPhase): number => { return ScalingInput.calculateFontSizeFromProps(this.props, phase); }; - private readonly _getInputWidthInPx = (): number => { - const ref = this._inputRef.current; - if (!ref) { - return 0; + private readonly _handleChange = (event: React.ChangeEvent<HTMLInputElement>): void => { + const value = event.target.value; + const { maxLength } = this.props; + if (!_.isUndefined(value) && !_.isUndefined(maxLength) && value.length > maxLength) { + return; } - return ref.getBoundingClientRect().width; + this.props.onChange(event); }; } |