Example usage for android.view Gravity VERTICAL_GRAVITY_MASK

Introduction

In this page you can find the example usage for android.view Gravity VERTICAL_GRAVITY_MASK.

Prototype

int VERTICAL_GRAVITY_MASK

To view the source code for android.view Gravity VERTICAL_GRAVITY_MASK.

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Document

Binary mask to get the vertical gravity of a gravity.

Usage

From source file:com.amitupadhyay.aboutexample.ui.widget.FabOverlapTextView.java

private void recompute(int width) {
    if (text != null) {
        // work out the top padding and line height to align text to a 4dp grid
        final float fourDip = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4,
                getResources().getDisplayMetrics());

        // ensure that the first line's baselines sits on 4dp grid by setting the top padding
        final Paint.FontMetricsInt fm = paint.getFontMetricsInt();
        final int gridAlignedTopPadding = (int) (fourDip
                * (float) Math.ceil((unalignedTopPadding + Math.abs(fm.ascent)) / fourDip)
                - Math.ceil(Math.abs(fm.ascent)));
        super.setPadding(getPaddingLeft(), gridAlignedTopPadding, getPaddingTop(), getPaddingBottom());

        // ensures line height is a multiple of 4dp
        final int fontHeight = Math.abs(fm.ascent - fm.descent) + fm.leading;
        final int baselineAlignedLineHeight = (int) (fourDip * (float) Math.ceil(lineHeightHint / fourDip));

        // before we can workout indents we need to know how many lines of text there are;
        // so we need to create a temporary layout :(
        layout = StaticLayout.Builder.obtain(text, 0, text.length(), paint, width)
                .setLineSpacing(baselineAlignedLineHeight - fontHeight, 1f).setBreakStrategy(breakStrategy)
                .build();/*  w ww .  j a  va 2  s  .co m*/
        final int preIndentedLineCount = layout.getLineCount();

        // now we can calculate the indents required for the given fab gravity
        final boolean gravityTop = (fabGravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.TOP;
        final boolean gravityLeft = (fabGravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.LEFT;
        // we want to iterate forward/backward over the lines depending on whether the fab
        // overlap vertical gravity is top/bottom
        int currentLine = gravityTop ? 0 : preIndentedLineCount - 1;
        int remainingHeightOverlap = fabOverlapHeight - (gravityTop ? getPaddingTop() : getPaddingBottom());
        final int[] leftIndents = new int[preIndentedLineCount];
        final int[] rightIndents = new int[preIndentedLineCount];
        do {
            if (remainingHeightOverlap > 0) {
                // still have overlap height to consume, set the appropriate indent
                leftIndents[currentLine] = gravityLeft ? fabOverlapWidth : 0;
                rightIndents[currentLine] = gravityLeft ? 0 : fabOverlapWidth;
                remainingHeightOverlap -= baselineAlignedLineHeight;
            } else {
                // have consumed the overlap height: no indent
                leftIndents[currentLine] = 0;
                rightIndents[currentLine] = 0;
            }
            if (gravityTop) { // iterate forward over the lines
                currentLine++;
            } else { // iterate backward over the lines
                currentLine--;
            }
        } while (gravityTop ? currentLine < preIndentedLineCount : currentLine >= 0);

        // now that we know the indents, create the actual layout
        layout = StaticLayout.Builder.obtain(text, 0, text.length(), paint, width)
                .setLineSpacing(baselineAlignedLineHeight - fontHeight, 1f)
                .setIndents(leftIndents, rightIndents).setBreakStrategy(breakStrategy).build();

        // ensure that the view's height sits on the grid (as we've changed padding etc).
        final int height = getPaddingTop() + layout.getHeight() + getPaddingBottom();
        final float overhang = height % fourDip;
        if (overhang != 0) {
            super.setPadding(getPaddingLeft(), getPaddingTop(), getPaddingRight(),
                    unalignedBottomPadding + (int) (fourDip - overhang));
        }
    }
}

---

From source file:xyz.berial.textinputlayout.CollapsingTextHelper.java

private void calculateBaseOffsets() {
    // We then calculate the collapsed text size, using the same logic
    mTextPaint.setTextSize(mCollapsedTextSize);
    float width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int collapsedAbsGravity = GravityCompat.getAbsoluteGravity(mCollapsedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (collapsedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mCollapsedDrawY = mCollapsedBounds.bottom;
        break;/*w ww .  ja v a  2s  . c o  m*/
    case Gravity.TOP:
        mCollapsedDrawY = mCollapsedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mCollapsedDrawY = mCollapsedBounds.centerY() + textOffset;
        break;
    }
    switch (collapsedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mCollapsedDrawX = mCollapsedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mCollapsedDrawX = mCollapsedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mCollapsedDrawX = mCollapsedBounds.left;
        break;
    }

    mTextPaint.setTextSize(mExpandedTextSize);
    width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int expandedAbsGravity = GravityCompat.getAbsoluteGravity(mExpandedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (expandedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mExpandedDrawY = mExpandedBounds.bottom;
        break;
    case Gravity.TOP:
        mExpandedDrawY = mExpandedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mExpandedDrawY = mExpandedBounds.centerY() + textOffset;
        break;
    }
    switch (expandedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mExpandedDrawX = mExpandedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mExpandedDrawX = mExpandedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mExpandedDrawX = mExpandedBounds.left;
        break;
    }

    // The bounds have changed so we need to clear the texture
    clearTexture();
}

---

From source file:org.dmfs.android.view.DrawablePagerTitleStrip.java

@SuppressLint("NewApi")
void updateDrawablePositions(int position, float positionOffset, boolean force) {
    if (mImageViews == null || mImageViews.length == 0) {
        return;/*from www  .  jav a2 s.  co  m*/
    }

    if (position != mLastKnownCurrentPage) {
        updateImages(position, mPager.getAdapter());
    } else if (!force && positionOffset == mLastKnownPositionOffset) {
        return;
    }

    mUpdatingPositions = true;

    final int[] widths = new int[mImageViews.length];
    for (int i = 0, l = mImageViews.length; i < l; ++i) {
        widths[i] = mImageViews[i].getMeasuredWidth();
    }

    final int stripWidth = getWidth();
    final int stripHeight = getHeight();
    final int paddingLeft = getPaddingLeft();
    final int paddingRight = getPaddingRight();
    final int paddingTop = getPaddingTop();
    final int paddingBottom = getPaddingBottom();

    float currOffset = positionOffset + 0.5f;
    if (currOffset > 1.f) {
        currOffset -= 1.f;
    }
    final int currCenter = stripWidth / 2
            - (int) ((widths[widths.length / 2] + mScaledTextSpacing) * (currOffset - 0.5f));
    final int currLeft = currCenter - widths[widths.length / 2] / 2;

    int maxBaseline = 0;
    for (ImageView iv : mImageViews) {
        maxBaseline = Math.max(maxBaseline, iv.getBaseline());
    }

    int maxTextHeight = 0;
    for (ImageView iv : mImageViews) {
        maxTextHeight = Math.max(maxTextHeight, maxBaseline - iv.getBaseline() + iv.getMeasuredHeight());
    }

    final int vgrav = mGravity & Gravity.VERTICAL_GRAVITY_MASK;

    int left = currLeft;
    for (int i = mImageViews.length / 2, l = mImageViews.length; i < l; ++i) {
        int baseline = mImageViews[i].getBaseline();
        int top;
        switch (vgrav) {
        default:
        case Gravity.TOP:
            top = paddingTop + maxBaseline - baseline;
            break;
        case Gravity.CENTER_VERTICAL:
            final int paddedHeight = stripHeight - paddingTop - paddingBottom;
            final int centeredTop = (paddedHeight - maxTextHeight) / 2;
            top = centeredTop + maxBaseline - baseline;
            break;
        case Gravity.BOTTOM:
            final int bottomGravTop = stripHeight - paddingBottom - maxTextHeight;
            top = bottomGravTop + maxBaseline - baseline;
            break;
        }

        int right = left + widths[i];
        mImageViews[i].layout(left, top, right, top + mImageViews[i].getMeasuredHeight());
        left += widths[i] + mScaledTextSpacing;

        if (VERSION.SDK_INT >= 14) {
            if (stripWidth - right < paddingRight) {
                mImageViews[i].setAlpha(
                        1 - ((float) Math.abs(Math.min(stripWidth - right - paddingRight, 0))) / widths[i]);
            } else {
                mImageViews[i].setAlpha(1f);
            }
        }
    }

    left = currLeft;
    for (int i = mImageViews.length / 2 - 1; i >= 0; --i) {
        int baseline = mImageViews[i].getBaseline();
        int top;
        switch (vgrav) {
        default:
        case Gravity.TOP:
            top = paddingTop + maxBaseline - baseline;
            break;
        case Gravity.CENTER_VERTICAL:
            final int paddedHeight = stripHeight - paddingTop - paddingBottom;
            final int centeredTop = (paddedHeight - maxTextHeight) / 2;
            top = centeredTop + maxBaseline - baseline;
            break;
        case Gravity.BOTTOM:
            final int bottomGravTop = stripHeight - paddingBottom - maxTextHeight;
            top = bottomGravTop + maxBaseline - baseline;
            break;
        }
        left -= widths[i] + mScaledTextSpacing;

        mImageViews[i].layout(left, top, left + widths[i], top + mImageViews[i].getMeasuredHeight());

        if (VERSION.SDK_INT >= 14) {
            if (left < paddingLeft) {
                mImageViews[i].setAlpha(1 - ((float) Math.abs(Math.min(left - paddingLeft, 0))) / widths[i]);
            } else {
                mImageViews[i].setAlpha(1f);
            }
        }
    }

    mLastKnownPositionOffset = positionOffset;
    mUpdatingPositions = false;
}

---

From source file:com.tencent.tws.assistant.widget.CheckBox.java

private void setRippleBackground(boolean isSupportTintDrawable, Drawable orgDrawable, int rippleColor) {
    if (orgDrawable != null && isSupportTintDrawable) {
        ColorStateList csl = createNormalStateList(rippleColor);
        final int verticalGravity = getGravity() & Gravity.VERTICAL_GRAVITY_MASK;
        final int drawableHeight = orgDrawable.getIntrinsicHeight();
        final int drawableWidth = orgDrawable.getIntrinsicWidth();
        final float scale = 0.3f;
        final float drawableScaleHeight = drawableHeight * scale;
        final float drawableScaleWidth = drawableWidth * scale;

        final int top;
        switch (verticalGravity) {
        case Gravity.BOTTOM:
            top = (int) (getHeight() - drawableHeight - drawableScaleHeight);
            break;
        case Gravity.CENTER_VERTICAL:
            top = (int) (((getHeight() - drawableHeight) / 2) - drawableScaleHeight);
            break;
        default://from  w w w.  ja va2 s.  c om
            top = (int) (-drawableScaleHeight);
        }
        final int bottom = (int) (top + drawableHeight + drawableScaleHeight * 2);
        final int left = (int) (isLayoutRtl() ? getWidth() - drawableWidth - drawableScaleWidth
                : -drawableScaleWidth);
        final int right = (int) (isLayoutRtl() ? getWidth() + drawableScaleWidth
                : drawableWidth + drawableScaleWidth);

        TwsRippleDrawable rippleDrawable = new TwsRippleDrawable(csl, null, null,
                TwsRippleDrawable.RIPPLE_STYLE_RING);
        rippleDrawable.twsSetHotspotBounds(left, top, right, bottom);
        setBackgroundDrawable(rippleDrawable);
    }
}

---

From source file:im.ene.lab.io_timer.ui.widget.MiniDrawerLayout.java

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    mInLayout = true;/* w  w  w . j  a va  2s  .  c o  m*/
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);

        if (child.getVisibility() == GONE) {
            continue;
        }

        final LayoutParams lp = (LayoutParams) child.getLayoutParams();

        if (isContentView(child)) {
            child.layout(lp.leftMargin, lp.topMargin, lp.leftMargin + child.getMeasuredWidth(),
                    lp.topMargin + child.getMeasuredHeight());
        } else { // Drawer, if it wasn't onMeasure would have thrown an exception.
            final int childWidth = child.getMeasuredWidth();
            final int childHeight = child.getMeasuredHeight();
            int childLeft;

            final float newOffset;
            childLeft = mCollapseWidth + (int) (lp.onScreen * (mExpandWidth - mCollapseWidth));
            // (float) (left - mCollapseWidth) / range
            newOffset = (float) (childLeft - mCollapseWidth) / (mExpandWidth - mCollapseWidth);

            final boolean changeOffset = newOffset != lp.onScreen;

            final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;

            switch (vgrav) {
            default:
            case Gravity.TOP: {
                child.layout(childLeft, lp.topMargin, childLeft + childWidth, lp.topMargin + childHeight);
                break;
            }

            case Gravity.BOTTOM: {
                final int height = b - t;
                child.layout(childLeft, height - lp.bottomMargin - child.getMeasuredHeight(),
                        childLeft + childWidth, height - lp.bottomMargin);
                break;
            }

            case Gravity.CENTER_VERTICAL: {
                final int height = b - t;
                int childTop = (height - childHeight) / 2;

                // Offset for margins. If things don't fit right because of
                // bad measurement before, oh well.
                if (childTop < lp.topMargin) {
                    childTop = lp.topMargin;
                } else if (childTop + childHeight > height - lp.bottomMargin) {
                    childTop = height - lp.bottomMargin - childHeight;
                }
                child.layout(childLeft, childTop, childLeft + childWidth, childTop + childHeight);
                break;
            }
            }

            if (changeOffset) {
                setDrawerViewOffset(child, newOffset);
            }
        }
    }
    mInLayout = false;
    mFirstLayout = false;
}

---

From source file:android.support.designox.widget.CollapsingTextHelper.java

private void calculateBaseOffsets() {
    final float currentTextSize = mCurrentTextSize;

    // We then calculate the collapsed text size, using the same logic
    calculateUsingTextSize(mCollapsedTextSize);
    float width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int collapsedAbsGravity = GravityCompat.getAbsoluteGravity(mCollapsedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (collapsedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mCollapsedDrawY = mCollapsedBounds.bottom;
        break;//from  w  w w  .j  a  v a  2 s  .  c o m
    case Gravity.TOP:
        mCollapsedDrawY = mCollapsedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mCollapsedDrawY = mCollapsedBounds.centerY() + textOffset;
        break;
    }
    switch (collapsedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mCollapsedDrawX = mCollapsedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mCollapsedDrawX = mCollapsedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mCollapsedDrawX = mCollapsedBounds.left;
        break;
    }

    calculateUsingTextSize(mExpandedTextSize);
    width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int expandedAbsGravity = GravityCompat.getAbsoluteGravity(mExpandedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (expandedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mExpandedDrawY = mExpandedBounds.bottom;
        break;
    case Gravity.TOP:
        mExpandedDrawY = mExpandedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mExpandedDrawY = mExpandedBounds.centerY() + textOffset;
        break;
    }
    switch (expandedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mExpandedDrawX = mExpandedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mExpandedDrawX = mExpandedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mExpandedDrawX = mExpandedBounds.left;
        break;
    }

    // The bounds have changed so we need to clear the texture
    clearTexture();
    // Now reset the text size back to the original
    setInterpolatedTextSize(currentTextSize);
}

---

From source file:android.support.design.widget.TextInputLayout.java

@Override
public void addView(View child, int index, final ViewGroup.LayoutParams params) {
    if (child instanceof EditText) {
        // Make sure that the EditText is vertically at the bottom, so that it sits on the
        // EditText's underline
        FrameLayout.LayoutParams flp = new FrameLayout.LayoutParams(params);
        flp.gravity = Gravity.CENTER_VERTICAL | (flp.gravity & ~Gravity.VERTICAL_GRAVITY_MASK);
        mInputFrame.addView(child, flp);

        // Now use the EditText's LayoutParams as our own and update them to make enough space
        // for the label
        mInputFrame.setLayoutParams(params);
        updateInputLayoutMargins();// w  w w .j a v a  2s  .  co  m

        setEditText((EditText) child);
    } else {
        // Carry on adding the View...
        super.addView(child, index, params);
    }
}

---

From source file:com.amitupadhyay.aboutexample.util.CollapsingTextHelper.java

private void calculateBaseOffsets() {
    // We then calculate the collapsed text size, using the same logic
    mTextPaint.setTextSize(mCollapsedTextSize);
    float width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int collapsedAbsGravity = GravityCompat.getAbsoluteGravity(mCollapsedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (collapsedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mCollapsedDrawY = mCollapsedBounds.bottom;
        break;// ww  w  .j  ava2s.c  om
    case Gravity.TOP:
        mCollapsedDrawY = mCollapsedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mCollapsedDrawY = mCollapsedBounds.centerY() + textOffset;
        break;
    }
    switch (collapsedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mCollapsedDrawX = mCollapsedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mCollapsedDrawX = mCollapsedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mCollapsedDrawX = mCollapsedBounds.left;
        break;
    }
    mTextPaint.setTextSize(mExpandedTextSize);
    width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int expandedAbsGravity = GravityCompat.getAbsoluteGravity(mExpandedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (expandedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mExpandedDrawY = mExpandedBounds.bottom;
        break;
    case Gravity.TOP:
        mExpandedDrawY = mExpandedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mExpandedDrawY = mExpandedBounds.centerY() + textOffset;
        break;
    }
    switch (expandedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mExpandedDrawX = mExpandedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mExpandedDrawX = mExpandedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mExpandedDrawX = mExpandedBounds.left;
        break;
    }
    // The bounds have changed so we need to clear the texture
    clearTexture();
}

---

From source file:ru.shmakinv.android.material.widget.CollapsingTextHelper.java

@SuppressLint("RtlHardcoded")
private void calculateBaseOffsets() {
    final float currentTextSize = mCurrentTextSize;

    // We then calculate the collapsed text size, using the same logic
    calculateUsingTextSize(mCollapsedTextSize);
    float width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int collapsedAbsGravity = GravityCompat.getAbsoluteGravity(mCollapsedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (collapsedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mCollapsedDrawY = mCollapsedBounds.bottom;
        break;/* w  w w. j a  va2s .  com*/
    case Gravity.TOP:
        mCollapsedDrawY = mCollapsedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mCollapsedDrawY = mCollapsedBounds.centerY() + textOffset;
        break;
    }
    switch (collapsedAbsGravity & GravityCompat.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mCollapsedDrawX = mCollapsedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mCollapsedDrawX = mCollapsedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mCollapsedDrawX = mCollapsedBounds.left;
        break;
    }

    calculateUsingTextSize(mExpandedTextSize);
    width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int expandedAbsGravity = GravityCompat.getAbsoluteGravity(mExpandedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (expandedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mExpandedDrawY = mExpandedBounds.bottom;
        break;
    case Gravity.TOP:
        mExpandedDrawY = mExpandedBounds.top - mTextPaint.ascent();
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mExpandedDrawY = mExpandedBounds.centerY() + textOffset;
        break;
    }
    switch (expandedAbsGravity & GravityCompat.RELATIVE_HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mExpandedDrawX = mExpandedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mExpandedDrawX = mExpandedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mExpandedDrawX = mExpandedBounds.left;
        break;
    }

    // The bounds have changed so we need to clear the texture
    clearTexture();
    // Now reset the text size back to the original
    setInterpolatedTextSize(currentTextSize);
}

---

From source file:com.tr4android.support.extension.widget.CollapsingTextHelper.java

private void calculateBaseOffsets() {
    final float currentTextSize = mCurrentTextSize;

    // We then calculate the collapsed text size, using the same logic
    calculateUsingTextSize(mCollapsedTextSize);
    mCollapsedTextHeight = -mTextPaint.ascent();
    float width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int collapsedAbsGravity = GravityCompat.getAbsoluteGravity(mCollapsedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (collapsedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mCollapsedDrawY = mCollapsedBounds.bottom - mCollapsedTextOffsetBottom;
        break;//from  ww  w  .  ja v a 2s.co m
    case Gravity.TOP:
        mCollapsedDrawY = mCollapsedBounds.top - mTextPaint.ascent() + mCollapsedTextOffsetTop;
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mCollapsedDrawY = mCollapsedBounds.centerY() + textOffset - (mCollapsedTextOffsetBottom / 2)
                + (mCollapsedTextOffsetTop / 2);
        break;
    }
    switch (collapsedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mCollapsedDrawX = mCollapsedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mCollapsedDrawX = mCollapsedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mCollapsedDrawX = mCollapsedBounds.left;
        break;
    }

    calculateUsingTextSize(mExpandedTextSize);
    mExpandedTextHeight = -mTextPaint.ascent();
    width = mTextToDraw != null ? mTextPaint.measureText(mTextToDraw, 0, mTextToDraw.length()) : 0;
    final int expandedAbsGravity = GravityCompat.getAbsoluteGravity(mExpandedTextGravity,
            mIsRtl ? ViewCompat.LAYOUT_DIRECTION_RTL : ViewCompat.LAYOUT_DIRECTION_LTR);
    switch (expandedAbsGravity & Gravity.VERTICAL_GRAVITY_MASK) {
    case Gravity.BOTTOM:
        mExpandedDrawY = mExpandedBounds.bottom - mExpandedTextOffsetBottom;
        break;
    case Gravity.TOP:
        mExpandedDrawY = mExpandedBounds.top - mTextPaint.ascent() + mExpandedTextOffsetTop;
        break;
    case Gravity.CENTER_VERTICAL:
    default:
        float textHeight = mTextPaint.descent() - mTextPaint.ascent();
        float textOffset = (textHeight / 2) - mTextPaint.descent();
        mExpandedDrawY = mExpandedBounds.centerY() + textOffset - (mExpandedTextOffsetBottom / 2)
                + (mExpandedTextOffsetTop / 2);
        break;
    }
    switch (expandedAbsGravity & Gravity.HORIZONTAL_GRAVITY_MASK) {
    case Gravity.CENTER_HORIZONTAL:
        mExpandedDrawX = mExpandedBounds.centerX() - (width / 2);
        break;
    case Gravity.RIGHT:
        mExpandedDrawX = mExpandedBounds.right - width;
        break;
    case Gravity.LEFT:
    default:
        mExpandedDrawX = mExpandedBounds.left;
        break;
    }

    // The bounds have changed so we need to clear the texture
    clearTexture();
    // Now reset the text size back to the original
    setInterpolatedTextSize(currentTextSize);
}

---

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