Java ApiCompatibilityUtils.isLayoutRtl方法代码示例

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    if (getMeasuredWidth() == 0) return;

    if (mSuggestion.getType() != OmniboxSuggestionType.SEARCH_SUGGEST_TAIL) {
        mContentsView.resetTextWidths();
    }

    boolean refineVisible = mRefineView.getVisibility() == VISIBLE;
    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);
    int contentsViewOffsetX = isRtl && refineVisible ? mRefineWidth : 0;
    mContentsView.layout(
            contentsViewOffsetX,
            0,
            contentsViewOffsetX + mContentsView.getMeasuredWidth(),
            mContentsView.getMeasuredHeight());
    int refineViewOffsetX = isRtl ? 0 : getMeasuredWidth() - mRefineWidth;
    mRefineView.layout(
            refineViewOffsetX,
            0,
            refineViewOffsetX + mRefineWidth,
            mContentsView.getMeasuredHeight());
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    // Place all the views in the positions already determined during onMeasure().
    int width = right - left;
    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);

    for (int i = 0; i < getChildCount(); i++) {
        View child = getChildAt(i);
        LayoutParams lp = (LayoutParams) child.getLayoutParams();
        int childLeft = lp.start;
        int childRight = lp.start + child.getMeasuredWidth();

        if (isRtl) {
            int tmp = width - childRight;
            childRight = width - childLeft;
            childLeft = tmp;
        }

        child.layout(childLeft, lp.top, childRight, lp.top + child.getMeasuredHeight());
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
    int width = right - left;
    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);

    // Child positions were already determined during the measurement pass.
    for (int childIndex = 0; childIndex < getChildCount(); childIndex++) {
        View child = getChildAt(childIndex);
        int childLeft = getControlLayoutParams(child).start;
        if (isRtl) childLeft = width - childLeft - child.getMeasuredWidth();

        int childTop = getControlLayoutParams(child).top;
        int childRight = childLeft + child.getMeasuredWidth();
        int childBottom = childTop + child.getMeasuredHeight();
        child.layout(childLeft, childTop, childRight, childBottom);
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private int getUrlBarLeftOffset() {
    if (DeviceFormFactor.isTablet(getContext())) {
        mUrlBar.getLocationInWindow(mViewPositionHolder);
        return mViewPositionHolder[0];
    } else {
        return ApiCompatibilityUtils.isLayoutRtl(this) ? mPhoneUrlBarLeftOffsetRtlPx
                : mPhoneUrlBarLeftOffsetPx;
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
/**
 * Sets the translation X values for child views during the width change animation. This
 * compensates for the change to the left/right position of the location bar and ensures child
 * views stay in the same spot visually during the animation.
 *
 * The delete button is special because if it's visible during the animation its start and end
 * location are not the same. When buttons are shown in the unfocused location bar, the delete
 * button is left of the microphone. When buttons are not shown in the unfocused location bar,
 * the delete button is aligned with the left edge of the location bar.
 *
 * @param offset The offset to use for the child views.
 * @param deleteOffset The additional offset to use for the delete button.
 */
private void setChildTranslationsForWidthChangeAnimation(int offset, int deleteOffset) {
    if (!ApiCompatibilityUtils.isLayoutRtl(this)) {
        // When the location bar layout direction is LTR, the buttons at the end (left side)
        // of the location bar need to stick to the left edge.
        if (mSaveOfflineButton.getVisibility() == View.VISIBLE) {
            mSaveOfflineButton.setTranslationX(offset);
        } else {
            mMicButton.setTranslationX(offset);
        }

        if (mDeleteButton.getVisibility() == View.VISIBLE) {
            mDeleteButton.setTranslationX(offset + deleteOffset);
        } else {
            mBookmarkButton.setTranslationX(offset);
        }
    } else {
        // When the location bar layout direction is RTL, the location bar icon and url
        // container at the start (right side) of the location bar need to stick to the right
        // edge.
        mLocationBarIcon.setTranslationX(offset);
        mUrlBar.setTranslationX(offset);

        if (mDeleteButton.getVisibility() == View.VISIBLE) {
            mDeleteButton.setTranslationX(-deleteOffset);
        }
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
public void getContentRect(Rect outRect) {
    super.getContentRect(outRect);
    if (mIncognitoBadge.getVisibility() == View.GONE) return;

    if (!ApiCompatibilityUtils.isLayoutRtl(this)) {
        outRect.left += mIncognitoBadge.getWidth();
    } else {
        outRect.right -= mIncognitoBadge.getWidth();
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private void updateUnfocusedLocationBarLayoutParams() {
    boolean hasVisibleViewPriorToUrlBar = false;
    for (int i = 0; i < mLocationBar.getChildCount(); i++) {
        View child = mLocationBar.getChildAt(i);
        if (child == mUrlBar) break;
        if (child.getVisibility() != GONE) {
            hasVisibleViewPriorToUrlBar = true;
            break;
        }
    }

    int leftViewBounds = getViewBoundsLeftOfLocationBar(mVisualState);
    int rightViewBounds = getViewBoundsRightOfLocationBar(mVisualState);

    if (!hasVisibleViewPriorToUrlBar) {
        if (ApiCompatibilityUtils.isLayoutRtl(mLocationBar)) {
            rightViewBounds -= mToolbarSidePadding;
        } else {
            leftViewBounds += mToolbarSidePadding;
        }
    }

    // Add spacing between the end of the URL and the edge of the omnibox drawable.
    // This only applies if there is no end aligned view that should be visible
    // while the omnibox is unfocused.
    if (ApiCompatibilityUtils.isLayoutRtl(mLocationBar)) {
        leftViewBounds += mToolbarSidePadding;
    } else {
        rightViewBounds -= mToolbarSidePadding;
    }

    mUnfocusedLocationBarLayoutWidth = rightViewBounds - leftViewBounds;
    mUnfocusedLocationBarLayoutLeft = leftViewBounds;
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private int getViewBoundsLeftOfLocationBar(VisualState visualState) {
    // Uses getMeasuredWidth()s instead of getLeft() because this is called in onMeasure
    // and the layout values have not yet been set.
    if (visualState == VisualState.NEW_TAB_NORMAL) {
        return 0;
    } else if (ApiCompatibilityUtils.isLayoutRtl(this)) {
        return Math.max(
                mToolbarSidePadding, mToolbarButtonsContainer.getMeasuredWidth());
    } else {
        return getBoundsAfterAccountingForLeftButton();
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private int getViewBoundsRightOfLocationBar(VisualState visualState) {
    // Uses getMeasuredWidth()s instead of getRight() because this is called in onMeasure
    // and the layout values have not yet been set.
    if (visualState == VisualState.NEW_TAB_NORMAL) {
        return getMeasuredWidth();
    } else if (ApiCompatibilityUtils.isLayoutRtl(this)) {
        return getMeasuredWidth() - getBoundsAfterAccountingForLeftButton();
    } else {
        int margin = Math.max(
                mToolbarSidePadding, mToolbarButtonsContainer.getMeasuredWidth());
        return getMeasuredWidth() - margin;
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);

    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);
    int paddingStart = ApiCompatibilityUtils.getPaddingStart(this);
    int widthWithoutPadding = getWidth() - paddingStart;

    canvas.save();
    if (!isRtl) canvas.translate(paddingStart, 0);

    canvas.save();
    canvas.translate(0, (getHeight() - mNormalDrawable.getIntrinsicHeight()) / 2.f);
    if (isRtl) {
        canvas.translate(widthWithoutPadding - mNormalDrawable.getIntrinsicWidth(), 0);
    }
    mNormalDrawable.draw(canvas);
    canvas.restore();

    if (mIsIncognito || (mTransitionAnimation != null && mTransitionAnimation.isRunning())) {
        canvas.save();
        canvas.translate(0, (getHeight() - mIncognitoDrawable.getIntrinsicHeight()) / 2.f);
        if (isRtl) {
            canvas.translate(widthWithoutPadding - mIncognitoDrawable.getIntrinsicWidth(), 0);
        }
        mIncognitoDrawable.draw(canvas);
        canvas.restore();
    }

    canvas.restore();
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int totalWidth = resolveSize(mMaxWidth, widthMeasureSpec);
    int childCount = getChildCount();
    if (childCount == 0) {
        setMeasuredDimension(totalWidth, resolveSize(0, heightMeasureSpec));
        return;
    }

    // Measure the children.
    for (int i = 0; i < childCount; i++) {
        measureChild(getChildAt(i), MeasureSpec.UNSPECIFIED, MeasureSpec.UNSPECIFIED);
    }

    // Determine the number of columns that will fit.
    int gridWidth = totalWidth - ApiCompatibilityUtils.getPaddingStart(this)
            - ApiCompatibilityUtils.getPaddingEnd(this);
    int childHeight = getChildAt(0).getMeasuredHeight();
    int childWidth = getChildAt(0).getMeasuredWidth();
    int numColumns = MathUtils.clamp(
            (gridWidth + mMinHorizontalSpacing) / (childWidth + mMinHorizontalSpacing),
            1, MAX_COLUMNS);

    // Ensure column spacing isn't greater than mMaxHorizontalSpacing.
    int gridWidthMinusColumns = Math.max(0, gridWidth - numColumns * childWidth);
    int gridSidePadding = gridWidthMinusColumns - mMaxHorizontalSpacing * (numColumns - 1);

    int gridStart = 0;
    float horizontalSpacing;
    if (gridSidePadding > 0) {
        horizontalSpacing = mMaxHorizontalSpacing;
        gridStart = gridSidePadding / 2;
    } else {
        horizontalSpacing = (float) gridWidthMinusColumns / Math.max(1, numColumns - 1);
    }

    // Limit the number of rows to mMaxRows.
    int visibleChildCount = Math.min(childCount, mMaxRows * numColumns);

    // Arrange the visible children in a grid.
    int numRows = (visibleChildCount + numColumns - 1) / numColumns;
    int paddingTop = getPaddingTop();
    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);
    for (int i = 0; i < visibleChildCount; i++) {
        View child = getChildAt(i);
        child.setVisibility(View.VISIBLE);
        int row = i / numColumns;
        int column = i % numColumns;
        int verticalOffset = Math.round(mExtraVerticalSpacing * ((float) (row + 1) / numRows));
        int childTop = row * (childHeight + mVerticalSpacing) + verticalOffset;
        int childStart = gridStart + Math.round(column * (childWidth + horizontalSpacing));
        MarginLayoutParams layoutParams = (MarginLayoutParams) child.getLayoutParams();
        layoutParams.setMargins(isRtl ? 0 : childStart, childTop, isRtl ? childStart : 0, 0);
        child.setLayoutParams(layoutParams);
    }

    // Hide any extra children in case there are more than needed for the maximum number of
    // rows.
    for (int i = visibleChildCount; i < childCount; i++) {
        getChildAt(i).setVisibility(View.GONE);
    }

    int totalHeight = paddingTop + getPaddingBottom() + numRows * childHeight
            + (numRows - 1) * mVerticalSpacing + mExtraVerticalSpacing;

    setMeasuredDimension(totalWidth, resolveSize(totalHeight, heightMeasureSpec));
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
@SuppressLint("RtlHardcoded")
private boolean layoutLocationBar(int containerWidth) {
    // Note that Toolbar's direction depends on system layout direction while
    // LocationBar's direction depends on its text inside.
    FrameLayout.LayoutParams locationBarLayoutParams =
            getFrameLayoutParams(getLocationBar().getContainerView());

    // Chrome prevents layout_gravity="left" from being defined in XML, but it simplifies
    // the logic, so it is manually specified here.
    locationBarLayoutParams.gravity = Gravity.TOP | Gravity.LEFT;

    int width = 0;
    int leftMargin = 0;

    // Always update the unfocused layout params regardless of whether we are using
    // those in this current layout pass as they are needed for animations.
    updateUnfocusedLocationBarLayoutParams();

    if (mLayoutLocationBarInFocusedMode || mVisualState == VisualState.NEW_TAB_NORMAL) {
        int priorVisibleWidth = 0;
        for (int i = 0; i < mLocationBar.getChildCount(); i++) {
            View child = mLocationBar.getChildAt(i);
            if (child == mLocationBar.getFirstViewVisibleWhenFocused()) break;
            if (child.getVisibility() == GONE) continue;
            priorVisibleWidth += child.getMeasuredWidth();
        }

        width = containerWidth - (2 * mToolbarSidePadding) + priorVisibleWidth;
        if (ApiCompatibilityUtils.isLayoutRtl(mLocationBar)) {
            leftMargin = mToolbarSidePadding;
        } else {
            leftMargin = -priorVisibleWidth + mToolbarSidePadding;
        }
    } else {
        width = mUnfocusedLocationBarLayoutWidth;
        leftMargin = mUnfocusedLocationBarLayoutLeft;
    }

    boolean changed = false;
    changed |= (width != locationBarLayoutParams.width);
    locationBarLayoutParams.width = width;

    changed |= (leftMargin != locationBarLayoutParams.leftMargin);
    locationBarLayoutParams.leftMargin = leftMargin;

    return changed;
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private void populateUrlFocusingAnimatorSet(List<Animator> animators) {
    Animator animator = ObjectAnimator.ofFloat(this, mUrlFocusChangePercentProperty, 1f);
    animator.setDuration(URL_FOCUS_CHANGE_ANIMATION_DURATION_MS);
    animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
    animators.add(animator);

    for (int i = 0; i < mLocationBar.getChildCount(); i++) {
        View childView = mLocationBar.getChildAt(i);
        if (childView == mLocationBar.getFirstViewVisibleWhenFocused()) break;
        animator = ObjectAnimator.ofFloat(childView, ALPHA, 0);
        animator.setDuration(URL_FOCUS_CHANGE_ANIMATION_DURATION_MS);
        animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
        animators.add(animator);
    }

    float density = getContext().getResources().getDisplayMetrics().density;
    boolean isRtl = ApiCompatibilityUtils.isLayoutRtl(this);
    float toolbarButtonTranslationX = MathUtils.flipSignIf(
            URL_FOCUS_TOOLBAR_BUTTONS_TRANSLATION_X_DP, isRtl) * density;

    animator = ObjectAnimator.ofFloat(
            mMenuButtonWrapper, TRANSLATION_X, toolbarButtonTranslationX);
    animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
    animator.setInterpolator(BakedBezierInterpolator.FADE_OUT_CURVE);
    animators.add(animator);

    animator = ObjectAnimator.ofFloat(mMenuButtonWrapper, ALPHA, 0);
    animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
    animator.setInterpolator(BakedBezierInterpolator.FADE_OUT_CURVE);
    animators.add(animator);

    if (mToggleTabStackButton != null) {
        animator = ObjectAnimator.ofFloat(
                mToggleTabStackButton, TRANSLATION_X, toolbarButtonTranslationX);
        animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
        animator.setInterpolator(BakedBezierInterpolator.FADE_OUT_CURVE);
        animators.add(animator);

        animator = ObjectAnimator.ofFloat(mToggleTabStackButton, ALPHA, 0);
        animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
        animator.setInterpolator(BakedBezierInterpolator.FADE_OUT_CURVE);
        animators.add(animator);
    }
}
 

import org.chromium.base.ApiCompatibilityUtils; //导入方法依赖的package包/类
private void populateUrlClearFocusingAnimatorSet(List<Animator> animators) {
    Animator animator = ObjectAnimator.ofFloat(this, mUrlFocusChangePercentProperty, 0f);
    animator.setDuration(URL_FOCUS_CHANGE_ANIMATION_DURATION_MS);
    animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
    animators.add(animator);

    animator = ObjectAnimator.ofFloat(mMenuButtonWrapper, TRANSLATION_X, 0);
    animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
    animator.setStartDelay(URL_CLEAR_FOCUS_MENU_DELAY_MS);
    animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
    animators.add(animator);

    animator = ObjectAnimator.ofFloat(mMenuButtonWrapper, ALPHA, 1);
    animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
    animator.setStartDelay(URL_CLEAR_FOCUS_MENU_DELAY_MS);
    animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
    animators.add(animator);

    if (mToggleTabStackButton != null) {
        animator = ObjectAnimator.ofFloat(mToggleTabStackButton, TRANSLATION_X, 0);
        animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
        animator.setStartDelay(URL_CLEAR_FOCUS_TABSTACK_DELAY_MS);
        animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
        animators.add(animator);

        animator = ObjectAnimator.ofFloat(mToggleTabStackButton, ALPHA, 1);
        animator.setDuration(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
        animator.setStartDelay(URL_CLEAR_FOCUS_TABSTACK_DELAY_MS);
        animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
        animators.add(animator);
    }

    for (int i = 0; i < mLocationBar.getChildCount(); i++) {
        View childView = mLocationBar.getChildAt(i);
        if (childView == mLocationBar.getFirstViewVisibleWhenFocused()) break;
        animator = ObjectAnimator.ofFloat(childView, ALPHA, 1);
        animator.setStartDelay(URL_FOCUS_TOOLBAR_BUTTONS_DURATION_MS);
        animator.setDuration(URL_CLEAR_FOCUS_MENU_DELAY_MS);
        animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
        animators.add(animator);
    }

    if (isLocationBarShownInNTP() && mNtpSearchBoxScrollPercent == 0f) return;

    // The call to getLayout() can return null briefly during text changes, but as it
    // is only needed for RTL calculations, we proceed if the location bar is showing
    // LTR content.
    boolean isLocationBarRtl = ApiCompatibilityUtils.isLayoutRtl(mLocationBar);
    if (!isLocationBarRtl || mUrlBar.getLayout() != null) {
        int urlBarStartScrollX = 0;
        if (isLocationBarRtl) {
            urlBarStartScrollX = (int) mUrlBar.getLayout().getPrimaryHorizontal(0);
            urlBarStartScrollX -= mUrlBar.getWidth();
        }

        // If the scroll position matches the current scroll position, do not trigger
        // this animation as it will cause visible jumps when going from cleared text
        // back to page URLs (despite it continually calling setScrollX with the same
        // number).
        if (mUrlBar.getScrollX() != urlBarStartScrollX) {
            animator = ObjectAnimator.ofInt(mUrlBar,
                    buildUrlScrollProperty(mLocationBar, isLocationBarRtl), urlBarStartScrollX);
            animator.setDuration(URL_FOCUS_CHANGE_ANIMATION_DURATION_MS);
            animator.setInterpolator(BakedBezierInterpolator.TRANSFORM_CURVE);
            animators.add(animator);
        }
    }
}