Examples with PositionData net.lucode.hackware.magicindicator.buildins.commonnavigator.model.PositionData used on opensource projects

Example 11 with PositionData

use of net.lucode.hackware.magicindicator.buildins.commonnavigator.model.PositionData in project MagicIndicator by hackware1993.

the class LinePagerIndicator method onPageScrolled.

@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    if (mPositionDataList == null || mPositionDataList.isEmpty()) {
        return;
    }
    // 计算颜色
    if (mColors != null && mColors.size() > 0) {
        int currentColor = mColors.get(Math.abs(position) % mColors.size());
        int nextColor = mColors.get(Math.abs(position + 1) % mColors.size());
        int color = ArgbEvaluatorHolder.eval(positionOffset, currentColor, nextColor);
        mPaint.setColor(color);
    }
    // 计算锚点位置
    PositionData current = FragmentContainerHelper.getImitativePositionData(mPositionDataList, position);
    PositionData next = FragmentContainerHelper.getImitativePositionData(mPositionDataList, position + 1);
    float leftX;
    float nextLeftX;
    float rightX;
    float nextRightX;
    if (mMode == MODE_MATCH_EDGE) {
        leftX = current.mLeft + mXOffset;
        nextLeftX = next.mLeft + mXOffset;
        rightX = current.mRight - mXOffset;
        nextRightX = next.mRight - mXOffset;
    } else if (mMode == MODE_WRAP_CONTENT) {
        leftX = current.mContentLeft + mXOffset;
        nextLeftX = next.mContentLeft + mXOffset;
        rightX = current.mContentRight - mXOffset;
        nextRightX = next.mContentRight - mXOffset;
    } else {
        // MODE_EXACTLY
        leftX = current.mLeft + (current.width() - mLineWidth) / 2;
        nextLeftX = next.mLeft + (next.width() - mLineWidth) / 2;
        rightX = current.mLeft + (current.width() + mLineWidth) / 2;
        nextRightX = next.mLeft + (next.width() + mLineWidth) / 2;
    }
    mLineRect.left = leftX + (nextLeftX - leftX) * mStartInterpolator.getInterpolation(positionOffset);
    mLineRect.right = rightX + (nextRightX - rightX) * mEndInterpolator.getInterpolation(positionOffset);
    mLineRect.top = getHeight() - mLineHeight - mYOffset;
    mLineRect.bottom = getHeight() - mYOffset;
    invalidate();
}