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Bug layout='stack' in rtl

See original GitHub issue

Hello, great library. but when I try to use the ‘stack’ layout in rtl mode, the cards seems to cover the wrong way. I’m using version 4.0.0-beta.5 in android, in react native 0.62.2

RTL Mod Screenshot_1597083458

LTR Screenshot_1597083704

Issue Analytics

State:
Created 3 years ago
Reactions:3
Comments:6

Top GitHub Comments

2reactions

mm1221uucommented, Oct 8, 2020

this my solution for IOS RTL and android issues:

passed this function to Carousel prop (slideInterpolatedStyle)

function stackAnimatedStyles(
    index,
    animatedValue,
    carouselProps,
    cardOffset,
  ) {
    const sizeRef = carouselProps.vertical
      ? carouselProps.itemHeight
      : carouselProps.itemWidth;
    const translateProp = carouselProps.vertical ? 'translateY' : 'translateX';
    const card1Scale = 0.9;
    const card2Scale = 0.8;
    
    cardOffset = !cardOffset && cardOffset !== 0 ? 18 : cardOffset;

    const getTranslateFromScale = (cardIndex, scale) => {
      const centerFactor = (1 / scale) * cardIndex;
      const centeredPosition = -Math.round(sizeRef * centerFactor);
      const edgeAlignment = Math.round((sizeRef - sizeRef * scale) / 2);
      const offset = Math.round((cardOffset * Math.abs(cardIndex)) / scale);

      return IS_ANDROID
        ? centeredPosition - edgeAlignment - offset
        : centeredPosition + edgeAlignment + offset;
    };

    const cardScreenPostion = () => {
      const IOS_RTL = IS_RTL && !IS_ANDROID;
      const factor = IOS_RTL ? -1 : 1;
      return [
        factor * (IOS_RTL ? -sizeRef - 15 : -sizeRef * 0.5),
        0,
        factor * getTranslateFromScale(1, card1Scale),
        factor * getTranslateFromScale(2, card2Scale),
        factor * getTranslateFromScale(3, card2Scale),
      ];
    };
    const opacityOutputRange =
      carouselProps.inactiveSlideOpacity === 1
        ? [1, 1, 1, 0]
        : [1, 0.75, 0.5, 0];
    return IS_ANDROID
      ? {
          elevation: IS_RTL ? carouselProps.data.length - index : null, // fix zIndex bug visually, but not from a logic point of view
          opacity: animatedValue.interpolate({
            inputRange: [-3, -2, -1, 0],
            outputRange: opacityOutputRange.reverse(),
            extrapolate: 'clamp',
          }),
          transform: [
            {
              scale: animatedValue.interpolate({
                inputRange: [-2, -1, 0, 1],
                outputRange: [card2Scale, card1Scale, 1, card1Scale],
                extrapolate: 'clamp',
              }),
            },
            {
              [translateProp]: animatedValue.interpolate({
                inputRange: [-3, -2, -1, 0, 1],
                outputRange: [
                  getTranslateFromScale(-3, card2Scale),
                  getTranslateFromScale(-2, card2Scale),
                  getTranslateFromScale(-1, card1Scale),
                  0,
                  sizeRef * 0.5,
                ],
                extrapolate: 'clamp',
              }),
            },
          ],
        }
      : {
          zIndex: carouselProps.data.length - index,
          opacity: animatedValue.interpolate({
            inputRange: [0, 1, 2, 3],
            outputRange: opacityOutputRange,
            extrapolate: 'clamp',
          }),
          transform: [
            {
              scale: animatedValue.interpolate({
                inputRange: [-1, 0, 1, 2],
                outputRange: [card1Scale, 1, card1Scale, card2Scale],
                extrapolate: 'clamp',
              }),
            },
            {
              [translateProp]: animatedValue.interpolate({
                inputRange: [-1, 0, 1, 2, 3],
                outputRange: cardScreenPostion(),
                extrapolate: 'clamp',
              }),
            },
          ],
        };
  }

0reactions

dohooocommented, Oct 8, 2021

Sorry, please allow me to advertise for my open source library! ~ I think this library react-native-reanimated-carousel will solve your problem. It is a high performance and very simple component, complete with React-Native reanimated 2