Example usage for android.view Gravity HORIZONTAL_GRAVITY_MASK

List of usage examples for android.view Gravity HORIZONTAL_GRAVITY_MASK

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Introduction

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

Prototype

int HORIZONTAL_GRAVITY_MASK

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

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Document

Binary mask to get the absolute horizontal gravity of a gravity.

Usage

From source file:android.support.v7.internal.widget.ActionBarView.java

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    int x = getPaddingLeft();
    final int y = getPaddingTop();
    final int contentHeight = b - t - getPaddingTop() - getPaddingBottom();

    if (contentHeight <= 0) {
        // Nothing to do if we can't see anything.
        return;//from w w w.  ja  va2 s.c  o  m
    }

    HomeView homeLayout = mExpandedActionView != null ? mExpandedHomeLayout : mHomeLayout;
    if (homeLayout.getVisibility() != GONE) {
        final int leftOffset = homeLayout.getLeftOffset();
        x += positionChild(homeLayout, x + leftOffset, y, contentHeight) + leftOffset;
    }

    if (mExpandedActionView == null) {
        final boolean showTitle = mTitleLayout != null && mTitleLayout.getVisibility() != GONE
                && (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0;
        if (showTitle) {
            x += positionChild(mTitleLayout, x, y, contentHeight);
        }

        switch (mNavigationMode) {
        case ActionBar.NAVIGATION_MODE_STANDARD:
            break;
        case ActionBar.NAVIGATION_MODE_LIST:
            if (mListNavLayout != null) {
                if (showTitle) {
                    x += mItemPadding;
                }
                x += positionChild(mListNavLayout, x, y, contentHeight) + mItemPadding;
            }
            break;
        case ActionBar.NAVIGATION_MODE_TABS:
            if (mTabScrollView != null) {
                if (showTitle) {
                    x += mItemPadding;
                }
                x += positionChild(mTabScrollView, x, y, contentHeight) + mItemPadding;
            }
            break;
        }
    }

    int menuLeft = r - l - getPaddingRight();
    if (mMenuView != null && mMenuView.getParent() == this) {
        positionChildInverse(mMenuView, menuLeft, y, contentHeight);
        menuLeft -= mMenuView.getMeasuredWidth();
    }

    if (mIndeterminateProgressView != null && mIndeterminateProgressView.getVisibility() != GONE) {
        positionChildInverse(mIndeterminateProgressView, menuLeft, y, contentHeight);
        menuLeft -= mIndeterminateProgressView.getMeasuredWidth();
    }

    View customView = null;
    if (mExpandedActionView != null) {
        customView = mExpandedActionView;
    } else if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && mCustomNavView != null) {
        customView = mCustomNavView;
    }
    if (customView != null) {
        ViewGroup.LayoutParams lp = customView.getLayoutParams();
        final ActionBar.LayoutParams ablp = lp instanceof ActionBar.LayoutParams ? (ActionBar.LayoutParams) lp
                : null;

        final int gravity = ablp != null ? ablp.gravity : DEFAULT_CUSTOM_GRAVITY;
        final int navWidth = customView.getMeasuredWidth();

        int topMargin = 0;
        int bottomMargin = 0;
        if (ablp != null) {
            x += ablp.leftMargin;
            menuLeft -= ablp.rightMargin;
            topMargin = ablp.topMargin;
            bottomMargin = ablp.bottomMargin;
        }

        int hgravity = gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
        // See if we actually have room to truly center; if not push against left or right.
        if (hgravity == Gravity.CENTER_HORIZONTAL) {
            final int centeredLeft = (getWidth() - navWidth) / 2;
            if (centeredLeft < x) {
                hgravity = Gravity.LEFT;
            } else if (centeredLeft + navWidth > menuLeft) {
                hgravity = Gravity.RIGHT;
            }
        } else if (gravity == -1) {
            hgravity = Gravity.LEFT;
        }

        int xpos = 0;
        switch (hgravity) {
        case Gravity.CENTER_HORIZONTAL:
            xpos = (getWidth() - navWidth) / 2;
            break;
        case Gravity.LEFT:
            xpos = x;
            break;
        case Gravity.RIGHT:
            xpos = menuLeft - navWidth;
            break;
        }

        int vgravity = gravity & Gravity.VERTICAL_GRAVITY_MASK;

        if (gravity == -1) {
            vgravity = Gravity.CENTER_VERTICAL;
        }

        int ypos = 0;
        switch (vgravity) {
        case Gravity.CENTER_VERTICAL:
            final int paddedTop = getPaddingTop();
            final int paddedBottom = getHeight() - getPaddingBottom();
            ypos = ((paddedBottom - paddedTop) - customView.getMeasuredHeight()) / 2;
            break;
        case Gravity.TOP:
            ypos = getPaddingTop() + topMargin;
            break;
        case Gravity.BOTTOM:
            ypos = getHeight() - getPaddingBottom() - customView.getMeasuredHeight() - bottomMargin;
            break;
        }
        final int customWidth = customView.getMeasuredWidth();
        customView.layout(xpos, ypos, xpos + customWidth, ypos + customView.getMeasuredHeight());
        x += customWidth;
    }

    if (mProgressView != null) {
        mProgressView.bringToFront();
        final int halfProgressHeight = mProgressView.getMeasuredHeight() / 2;
        mProgressView.layout(mProgressBarPadding, -halfProgressHeight,
                mProgressBarPadding + mProgressView.getMeasuredWidth(), halfProgressHeight);
    }
}

From source file:com.huangj.huangjlibrary.widget.drawerlayout.DrawerLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY || heightMode != MeasureSpec.EXACTLY) {
        if (isInEditMode()) {
            // Don't crash the layout editor. Consume all of the space if specified
            // or pick a magic number from thin air otherwise.
            // TODO Better communication with tools of this bogus state.
            // It will crash on a real device.
            if (widthMode == MeasureSpec.AT_MOST) {
                widthMode = MeasureSpec.EXACTLY;
            } else if (widthMode == MeasureSpec.UNSPECIFIED) {
                widthMode = MeasureSpec.EXACTLY;
                widthSize = 300;/*from   www.  j a va  2 s .co  m*/
            }
            if (heightMode == MeasureSpec.AT_MOST) {
                heightMode = MeasureSpec.EXACTLY;
            } else if (heightMode == MeasureSpec.UNSPECIFIED) {
                heightMode = MeasureSpec.EXACTLY;
                heightSize = 300;
            }
        } else {
            throw new IllegalArgumentException("DrawerLayout must be measured with MeasureSpec.EXACTLY.");
        }
    }

    setMeasuredDimension(widthSize, heightSize);

    final boolean applyInsets = mLastInsets != null && ViewCompat.getFitsSystemWindows(this);
    final int layoutDirection = ViewCompat.getLayoutDirection(this);

    // Only one drawer is permitted along each vertical edge (left / right). These two booleans
    // are tracking the presence of the edge drawers.
    boolean hasDrawerOnLeftEdge = false;
    boolean hasDrawerOnRightEdge = false;
    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 (applyInsets) {
            final int cgrav = GravityCompat.getAbsoluteGravity(lp.gravity, layoutDirection);
            if (ViewCompat.getFitsSystemWindows(child)) {
                IMPL.dispatchChildInsets(child, mLastInsets, cgrav);
            } else {
                IMPL.applyMarginInsets(lp, mLastInsets, cgrav);
            }
        }

        if (isContentView(child)) {
            // Content views get measured at exactly the layout's size.
            final int contentWidthSpec = MeasureSpec.makeMeasureSpec(widthSize - lp.leftMargin - lp.rightMargin,
                    MeasureSpec.EXACTLY);
            final int contentHeightSpec = MeasureSpec
                    .makeMeasureSpec(heightSize - lp.topMargin - lp.bottomMargin, MeasureSpec.EXACTLY);
            child.measure(contentWidthSpec, contentHeightSpec);
        } else if (isDrawerView(child)) {
            if (SET_DRAWER_SHADOW_FROM_ELEVATION) {
                if (ViewCompat.getElevation(child) != mDrawerElevation) {
                    ViewCompat.setElevation(child, mDrawerElevation);
                }
            }
            final @EdgeGravity int childGravity = getDrawerViewAbsoluteGravity(child)
                    & Gravity.HORIZONTAL_GRAVITY_MASK;
            // Note that the isDrawerView check guarantees that childGravity here is either
            // LEFT or RIGHT
            boolean isLeftEdgeDrawer = (childGravity == Gravity.LEFT);
            if ((isLeftEdgeDrawer && hasDrawerOnLeftEdge) || (!isLeftEdgeDrawer && hasDrawerOnRightEdge)) {
                throw new IllegalStateException(
                        "Child drawer has absolute gravity " + gravityToString(childGravity) + " but this "
                                + TAG + " already has a " + "drawer view along that edge");
            }
            if (isLeftEdgeDrawer) {
                hasDrawerOnLeftEdge = true;
            } else {
                hasDrawerOnRightEdge = true;
            }
            final int drawerWidthSpec = getChildMeasureSpec(widthMeasureSpec,
                    mMinDrawerMargin + lp.leftMargin + lp.rightMargin, lp.width);
            final int drawerHeightSpec = getChildMeasureSpec(heightMeasureSpec, lp.topMargin + lp.bottomMargin,
                    lp.height);
            child.measure(drawerWidthSpec, drawerHeightSpec);
        } else {
            throw new IllegalStateException("Child " + child + " at index " + i
                    + " does not have a valid layout_gravity - must be Gravity.LEFT, "
                    + "Gravity.RIGHT or Gravity.NO_GRAVITY");
        }
    }
}

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

/**
 * Lay out a child view with respect to a keyline.
 *
 * <p>The keyline represents a horizontal offset from the unpadded starting edge of
 * the CoordinatorLayout. The child's gravity will affect how it is positioned with
 * respect to the keyline.</p>/*from  ww w. j ava 2  s  . c  o  m*/
 *
 * @param child child to lay out
 * @param keyline offset from the starting edge in pixels of the keyline to align with
 * @param layoutDirection ViewCompat constant for layout direction
 */
private void layoutChildWithKeyline(View child, int keyline, int layoutDirection) {
    final LayoutParams lp = (LayoutParams) child.getLayoutParams();
    final int absGravity = GravityCompat.getAbsoluteGravity(resolveKeylineGravity(lp.gravity), layoutDirection);

    final int hgrav = absGravity & Gravity.HORIZONTAL_GRAVITY_MASK;
    final int vgrav = absGravity & Gravity.VERTICAL_GRAVITY_MASK;
    final int width = getWidth();
    final int height = getHeight();
    final int childWidth = child.getMeasuredWidth();
    final int childHeight = child.getMeasuredHeight();

    if (layoutDirection == ViewCompat.LAYOUT_DIRECTION_RTL) {
        keyline = width - keyline;
    }

    int left = getKeyline(keyline) - childWidth;
    int top = 0;

    switch (hgrav) {
    default:
    case Gravity.LEFT:
        // Nothing to do.
        break;
    case Gravity.RIGHT:
        left += childWidth;
        break;
    case Gravity.CENTER_HORIZONTAL:
        left += childWidth / 2;
        break;
    }

    switch (vgrav) {
    default:
    case Gravity.TOP:
        // Do nothing, we're already in position.
        break;
    case Gravity.BOTTOM:
        top += childHeight;
        break;
    case Gravity.CENTER_VERTICAL:
        top += childHeight / 2;
        break;
    }

    // Obey margins and padding
    left = Math.max(getPaddingLeft() + lp.leftMargin,
            Math.min(left, width - getPaddingRight() - childWidth - lp.rightMargin));
    top = Math.max(getPaddingTop() + lp.topMargin,
            Math.min(top, height - getPaddingBottom() - childHeight - lp.bottomMargin));

    child.layout(left, top, left + childWidth, top + childHeight);
}

From source file:com.gome.ecmall.custom.VerticalViewPager.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    // For simple implementation, or internal size is always 0.
    // We depend on the container to specify the layout size of
    // our view. We can't really know what it is since we will be
    // adding and removing different arbitrary views and do not
    // want the layout to change as this happens.
    setMeasuredDimension(getDefaultSize(0, widthMeasureSpec), getDefaultSize(0, heightMeasureSpec));

    // final int measuredWidth = getMeasuredWidth();
    final int measuredHeight = getMeasuredHeight();
    final int maxGutterSize = measuredHeight / 10;
    mGutterSize = Math.min(maxGutterSize, mDefaultGutterSize);

    // Children are just made to fill our space.
    // int childWidthSize = measuredWidth - getPaddingLeft()
    // - getPaddingRight();
    // int childHeightSize = getMeasuredHeight() - getPaddingTop()
    // - getPaddingBottom();

    int childWidthSize = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
    int childHeightSize = measuredHeight - getPaddingTop() - getPaddingBottom();

    /*//  ww  w .j  a  va 2 s  .co m
     * Make sure all children have been properly measured. Decor views first. Right now we cheat and make this less
     * complicated by assuming decor views won't intersect. We will pin to edges based on gravity.
     */
    int size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp != null && lp.isDecor) {
                final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
                final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
                int widthMode = MeasureSpec.AT_MOST;
                int heightMode = MeasureSpec.AT_MOST;
                boolean consumeVertical = vgrav == Gravity.TOP || vgrav == Gravity.BOTTOM;
                boolean consumeHorizontal = hgrav == Gravity.LEFT || hgrav == Gravity.RIGHT;

                if (consumeVertical) {
                    widthMode = MeasureSpec.EXACTLY;
                } else if (consumeHorizontal) {
                    heightMode = MeasureSpec.EXACTLY;
                }

                int widthSize = childWidthSize;
                int heightSize = childHeightSize;
                if (lp.width != LayoutParams.WRAP_CONTENT) {
                    widthMode = MeasureSpec.EXACTLY;
                    if (lp.width != LayoutParams.MATCH_PARENT) {
                        widthSize = lp.width;
                    }
                }
                if (lp.height != LayoutParams.WRAP_CONTENT) {
                    heightMode = MeasureSpec.EXACTLY;
                    if (lp.height != LayoutParams.MATCH_PARENT) {
                        heightSize = lp.height;
                    }
                }
                final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, widthMode);
                final int heightSpec = MeasureSpec.makeMeasureSpec(heightSize, heightMode);
                child.measure(widthSpec, heightSpec);

                if (consumeVertical) {
                    childHeightSize -= child.getMeasuredHeight();
                } else if (consumeHorizontal) {
                    childWidthSize -= child.getMeasuredWidth();
                }
            }
        }
    }

    mChildWidthMeasureSpec = MeasureSpec.makeMeasureSpec(childWidthSize, MeasureSpec.EXACTLY);
    mChildHeightMeasureSpec = MeasureSpec.makeMeasureSpec(childHeightSize, MeasureSpec.EXACTLY);

    // Make sure we have created all fragments that we need to have shown.
    mInLayout = true;
    populate();
    mInLayout = false;

    // Page views next.
    size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            if (DEBUG)
                Log.v(TAG, "Measuring #" + i + " " + child + ": " + mChildWidthMeasureSpec);

            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp == null || !lp.isDecor) {
                // final int widthSpec = MeasureSpec.makeMeasureSpec(
                // (int) (childWidthSize * lp.heightFactor),
                // MeasureSpec.EXACTLY);
                final int heightSpec = MeasureSpec.makeMeasureSpec((int) (childHeightSize * lp.heightFactor),
                        MeasureSpec.EXACTLY);
                child.measure(mChildWidthMeasureSpec, heightSpec);
            }
        }
    }
}

From source file:com.jecelyin.editor.v2.widget.AnyDrawerLayout.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    int widthMode = MeasureSpec.getMode(widthMeasureSpec);
    int heightMode = MeasureSpec.getMode(heightMeasureSpec);
    int widthSize = MeasureSpec.getSize(widthMeasureSpec);
    int heightSize = MeasureSpec.getSize(heightMeasureSpec);

    if (widthMode != MeasureSpec.EXACTLY || heightMode != MeasureSpec.EXACTLY) {
        if (isInEditMode()) {
            // Don't crash the layout editor. Consume all of the space if specified
            // or pick a magic number from thin air otherwise.
            // TODO Better communication with tools of this bogus state.
            // It will crash on a real device.
            if (widthMode == MeasureSpec.AT_MOST) {
                widthMode = MeasureSpec.EXACTLY;
            } else if (widthMode == MeasureSpec.UNSPECIFIED) {
                widthMode = MeasureSpec.EXACTLY;
                widthSize = 300;/*from w  ww. ja  v a 2  s .co  m*/
            }
            if (heightMode == MeasureSpec.AT_MOST) {
                heightMode = MeasureSpec.EXACTLY;
            } else if (heightMode == MeasureSpec.UNSPECIFIED) {
                heightMode = MeasureSpec.EXACTLY;
                heightSize = 300;
            }
        } else {
            throw new IllegalArgumentException("DrawerLayout must be measured with MeasureSpec.EXACTLY.");
        }
    }

    setMeasuredDimension(widthSize, heightSize);

    final boolean applyInsets = mLastInsets != null && ViewCompat.getFitsSystemWindows(this);
    final int layoutDirection = ViewCompat.getLayoutDirection(this);

    // Only one drawer is permitted along each vertical edge (left / right). These two booleans
    // are tracking the presence of the edge drawers.
    boolean hasDrawerOnLeftEdge = false;
    boolean hasDrawerOnRightEdge = false;
    boolean hasDrawerOnBottomEdge = false;
    final int childCount = getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = getChildAt(i);

        if (child.getVisibility() == GONE) {
            continue;
        }
        final @EdgeGravity int vchildGravity = getDrawerViewAbsoluteGravity(child)
                & Gravity.VERTICAL_GRAVITY_MASK;
        boolean isBottomEdgeDrawer = (vchildGravity == Gravity.BOTTOM);

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

        if (applyInsets && !isBottomEdgeDrawer) {
            final int cgrav = GravityCompat.getAbsoluteGravity(lp.gravity, layoutDirection);
            if (ViewCompat.getFitsSystemWindows(child)) {
                IMPL.dispatchChildInsets(child, mLastInsets, cgrav);
            } else {
                IMPL.applyMarginInsets(lp, mLastInsets, cgrav);
            }
        }

        if (isContentView(child)) {
            // Content views get measured at exactly the layout's size.
            final int contentWidthSpec = MeasureSpec.makeMeasureSpec(widthSize - lp.leftMargin - lp.rightMargin,
                    MeasureSpec.EXACTLY);
            final int contentHeightSpec = MeasureSpec
                    .makeMeasureSpec(heightSize - lp.topMargin - lp.bottomMargin, MeasureSpec.EXACTLY);
            child.measure(contentWidthSpec, contentHeightSpec);
        } else if (isDrawerView(child)) {
            if (SET_DRAWER_SHADOW_FROM_ELEVATION) {
                if (ViewCompat.getElevation(child) != mDrawerElevation) {
                    ViewCompat.setElevation(child, mDrawerElevation);
                }
            }
            final @EdgeGravity int childGravity = getDrawerViewAbsoluteGravity(child)
                    & Gravity.HORIZONTAL_GRAVITY_MASK;
            //                final @EdgeGravity int vchildGravity =
            //                        getDrawerViewAbsoluteGravity(child) & Gravity.VERTICAL_GRAVITY_MASK;
            // Note that the isDrawerView check guarantees that childGravity here is either
            // LEFT or RIGHT
            boolean isLeftEdgeDrawer = (childGravity == Gravity.LEFT);
            if ((isLeftEdgeDrawer && hasDrawerOnLeftEdge) || (isBottomEdgeDrawer && hasDrawerOnBottomEdge)
                    || (!isBottomEdgeDrawer && !isLeftEdgeDrawer && hasDrawerOnRightEdge)) {
                throw new IllegalStateException("Child drawer has absolute gravity "
                        + gravityToString(isBottomEdgeDrawer ? vchildGravity : childGravity) + " but this "
                        + TAG + " already has a " + "drawer view along that edge");
            }
            if (isBottomEdgeDrawer) {
                hasDrawerOnBottomEdge = true;
            } else if (isLeftEdgeDrawer) {
                hasDrawerOnLeftEdge = true;
            } else {
                hasDrawerOnRightEdge = true;
            }
            // View ???
            int minDrawerMargin = isBottomEdgeDrawer ? 0 : mMinDrawerMargin;
            final int drawerWidthSpec = getChildMeasureSpec(widthMeasureSpec,
                    minDrawerMargin + lp.leftMargin + lp.rightMargin, lp.width);
            final int drawerHeightSpec = getChildMeasureSpec(heightMeasureSpec, lp.topMargin + lp.bottomMargin,
                    lp.height);
            child.measure(drawerWidthSpec, drawerHeightSpec);
        } else {
            throw new IllegalStateException("Child " + child + " at index " + i
                    + " does not have a valid layout_gravity - must be Gravity.LEFT, "
                    + "Gravity.RIGHT, Gravity.BOTTOM or Gravity.NO_GRAVITY");
        }
    }
}

From source file:org.bangbang.support.v4.widget.VerticalViewPager.java

@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    // For simple implementation, or internal size is always 0.
    // We depend on the container to specify the layout size of
    // our view.  We can't really know what it is since we will be
    // adding and removing different arbitrary views and do not
    // want the layout to change as this happens.
    setMeasuredDimension(getDefaultSize(0, widthMeasureSpec), getDefaultSize(0, heightMeasureSpec));

    final int measuredHeight = getMeasuredHeight();
    final int maxGutterSize = measuredHeight / 10;
    mGutterSize = Math.min(maxGutterSize, mDefaultGutterSize);

    // Children are just made to fill our space.
    int childWidthSize = getMeasuredWidth() - getPaddingLeft() - getPaddingRight();
    int childHeightSize = measuredHeight - getPaddingTop() - getPaddingBottom();

    /*/*from  w  w  w .  j  ava  2  s  .c o  m*/
     * Make sure all children have been properly measured. Decor views first.
     * Right now we cheat and make this less complicated by assuming decor
     * views won't intersect. We will pin to edges based on gravity.
     */
    int size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp != null && lp.isDecor) {
                final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
                final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
                int widthMode = MeasureSpec.AT_MOST;
                int heightMode = MeasureSpec.AT_MOST;
                boolean consumeVertical = vgrav == Gravity.TOP || vgrav == Gravity.BOTTOM;
                boolean consumeHorizontal = hgrav == Gravity.LEFT || hgrav == Gravity.RIGHT;

                if (consumeVertical) {
                    widthMode = MeasureSpec.EXACTLY;
                } else if (consumeHorizontal) {
                    heightMode = MeasureSpec.EXACTLY;
                }

                int widthSize = childWidthSize;
                int heightSize = childHeightSize;
                if (lp.width != LayoutParams.WRAP_CONTENT) {
                    widthMode = MeasureSpec.EXACTLY;
                    if (lp.width != LayoutParams.FILL_PARENT) {
                        widthSize = lp.width;
                    }
                }
                if (lp.height != LayoutParams.WRAP_CONTENT) {
                    heightMode = MeasureSpec.EXACTLY;
                    if (lp.height != LayoutParams.FILL_PARENT) {
                        heightSize = lp.height;
                    }
                }
                final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, widthMode);
                final int heightSpec = MeasureSpec.makeMeasureSpec(heightSize, heightMode);
                child.measure(widthSpec, heightSpec);

                if (consumeVertical) {
                    childHeightSize -= child.getMeasuredHeight();
                } else if (consumeHorizontal) {
                    childWidthSize -= child.getMeasuredWidth();
                }
            }
        }
    }

    mChildWidthMeasureSpec = MeasureSpec.makeMeasureSpec(childWidthSize, MeasureSpec.EXACTLY);
    mChildHeightMeasureSpec = MeasureSpec.makeMeasureSpec(childHeightSize, MeasureSpec.EXACTLY);

    // Make sure we have created all fragments that we need to have shown.
    mInLayout = true;
    populate();
    mInLayout = false;

    // Page views next.
    size = getChildCount();
    for (int i = 0; i < size; ++i) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            if (DEBUG)
                Log.v(TAG, "Measuring #" + i + " " + child + ": " + mChildWidthMeasureSpec);

            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (lp == null || !lp.isDecor) {
                final int heightSpec = MeasureSpec.makeMeasureSpec((int) (childHeightSize * lp.widthFactor),
                        MeasureSpec.EXACTLY);
                child.measure(mChildWidthMeasureSpec, heightSpec);
            }
        }
    }
}

From source file:administrator.example.com.myscrollview.VerticalViewPager.java

@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
    mInLayout = true;/*w w  w .  ja  v a2s.  c o m*/
    populate();
    mInLayout = false;

    final int count = getChildCount();
    int width = r - l;
    int height = b - t;
    int paddingLeft = getPaddingLeft();
    int paddingTop = getPaddingTop();
    int paddingRight = getPaddingRight();
    int paddingBottom = getPaddingBottom();
    final int scrollY = getScrollY();

    int decorCount = 0;

    for (int i = 0; i < count; i++) {
        final View child = getChildAt(i);
        if (child.getVisibility() != GONE) {
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            ItemInfo ii;
            int childLeft = 0;
            int childTop = 0;
            if (lp.isDecor) {
                //XXX isDecorfalse
                final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
                final int vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK;
                switch (hgrav) {
                default:
                    childLeft = paddingLeft;
                    break;
                case Gravity.LEFT:
                    childLeft = paddingLeft;
                    paddingLeft += child.getMeasuredWidth();
                    break;
                case Gravity.CENTER_HORIZONTAL:
                    childLeft = Math.max((width - child.getMeasuredWidth()) / 2, paddingLeft);
                    break;
                case Gravity.RIGHT:
                    childLeft = width - paddingRight - child.getMeasuredWidth();
                    paddingRight += child.getMeasuredWidth();
                    break;
                } /* end of switch */
                switch (vgrav) {
                default:
                    childTop = paddingTop;
                    break;
                case Gravity.TOP:
                    childTop = paddingTop;
                    paddingTop += child.getMeasuredHeight();
                    break;
                case Gravity.CENTER_VERTICAL:
                    childTop = Math.max((height - child.getMeasuredHeight()) / 2, paddingTop);
                    break;
                case Gravity.BOTTOM:
                    childTop = height - paddingBottom - child.getMeasuredHeight();
                    paddingBottom += child.getMeasuredHeight();
                    break;
                } /* end of switch */

                //XXX y?
                childTop += scrollY;
                decorCount++;
                child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(),
                        childTop + child.getMeasuredHeight());
            } else if ((ii = infoForChild(child)) != null) {
                //XXX ViewPager??
                int toff = (height + mPageMargin) * ii.position;
                childLeft = paddingLeft;
                childTop = paddingTop + toff;

                if (DEBUG)
                    Log.v(TAG, "Positioning #" + i + " " + child + " f=" + ii.object + ":" + childLeft + ","
                            + childTop + " " + child.getMeasuredWidth() + "x" + child.getMeasuredHeight());
                child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(),
                        childTop + child.getMeasuredHeight());
            } /* end of if */
        } /* end of if */
    } /* end of for */

    //XXX ?
    mLeftPageBounds = paddingLeft;
    mRightPageBounds = width - paddingRight;
    mDecorChildCount = decorCount;
    mFirstLayout = false;
}

From source file:com.chenglong.muscle.ui.LazyViewPager.java

/**
 * This method will be invoked when the current page is scrolled, either as
 * part of a programmatically initiated smooth scroll or a user initiated
 * touch scroll. If you override this method you must call through to the
 * superclass implementation (e.g. super.onPageScrolled(position, offset,
 * offsetPixels)) before onPageScrolled returns.
 *
 * @param position     Position index of the first page currently being displayed.
 *                     Page position+1 will be visible if positionOffset is nonzero.
 * @param offset       Value from [0, 1) indicating the offset from the page at
 *                     position./*from www . ja va2  s .  c o  m*/
 * @param offsetPixels Value in pixels indicating the offset from position.
 */
protected void onPageScrolled(int position, float offset, int offsetPixels) {
    // Offset any decor views if needed - keep them on-screen at all times.
    if (mDecorChildCount > 0) {
        final int scrollX = getScrollX();
        int paddingLeft = getPaddingLeft();
        int paddingRight = getPaddingRight();
        final int width = getWidth();
        final int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = getChildAt(i);
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (!lp.isDecor)
                continue;
            final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
            int childLeft = 0;
            switch (hgrav) {
            default:
                childLeft = paddingLeft;
                break;
            case Gravity.LEFT:
                childLeft = paddingLeft;
                paddingLeft += child.getWidth();
                break;
            case Gravity.CENTER_HORIZONTAL:
                childLeft = Math.max((width - child.getMeasuredWidth()) / 2, paddingLeft);
                break;
            case Gravity.RIGHT:
                childLeft = width - paddingRight - child.getMeasuredWidth();
                paddingRight += child.getMeasuredWidth();
                break;
            }
            childLeft += scrollX;
            final int childOffset = childLeft - child.getLeft();
            if (childOffset != 0) {
                child.offsetLeftAndRight(childOffset);
            }
        }
    }
    if (mOnPageChangeListener != null) {
        mOnPageChangeListener.onPageScrolled(position, offset, offsetPixels);
    }
    if (mInternalPageChangeListener != null) {
        mInternalPageChangeListener.onPageScrolled(position, offset, offsetPixels);
    }
    mCalledSuper = true;
}

From source file:com.tylz.jiaoyanglogistics.view.LazyViewPager.java

/**
 * This method will be invoked when the current page is scrolled, either as part
 * of a programmatically initiated smooth scroll or a user initiated touch scroll.
 * If you override this method you must call through to the superclass implementation
 * (e.g. super.onPageScrolled(position, offset, offsetPixels)) before onPageScrolled
 * returns./* ww w  . j a  va2s .  c om*/
 *
 * @param position Position index of the first page currently being displayed.
 *                 Page position+1 will be visible if positionOffset is nonzero.
 * @param offset Value from [0, 1) indicating the offset from the page at position.
 * @param offsetPixels Value in pixels indicating the offset from position.
 */
protected void onPageScrolled(int position, float offset, int offsetPixels) {
    // Offset any decor views if needed - keep them on-screen at all times.
    if (mDecorChildCount > 0) {
        final int scrollX = getScrollX();
        int paddingLeft = getPaddingLeft();
        int paddingRight = getPaddingRight();
        final int width = getWidth();
        final int childCount = getChildCount();
        for (int i = 0; i < childCount; i++) {
            final View child = getChildAt(i);
            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
            if (!lp.isDecor) {
                continue;
            }

            final int hgrav = lp.gravity & Gravity.HORIZONTAL_GRAVITY_MASK;
            int childLeft = 0;
            switch (hgrav) {
            default:
                childLeft = paddingLeft;
                break;
            case Gravity.LEFT:
                childLeft = paddingLeft;
                paddingLeft += child.getWidth();
                break;
            case Gravity.CENTER_HORIZONTAL:
                childLeft = Math.max((width - child.getMeasuredWidth()) / 2, paddingLeft);
                break;
            case Gravity.RIGHT:
                childLeft = width - paddingRight - child.getMeasuredWidth();
                paddingRight += child.getMeasuredWidth();
                break;
            }
            childLeft += scrollX;

            final int childOffset = childLeft - child.getLeft();
            if (childOffset != 0) {
                child.offsetLeftAndRight(childOffset);
            }
        }
    }

    if (mOnPageChangeListener != null) {
        mOnPageChangeListener.onPageScrolled(position, offset, offsetPixels);
    }
    if (mInternalPageChangeListener != null) {
        mInternalPageChangeListener.onPageScrolled(position, offset, offsetPixels);
    }
    mCalledSuper = true;
}

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

/**
 * Return the given gravity value, but if either or both of the axes doesn't have any gravity
 * specified, the default value (start or top) is specified. This should be used for children
 * that are not anchored to another view or a keyline.
 *//*from   w  ww  .j  a  v  a2 s .com*/
private static int resolveGravity(int gravity) {
    if ((gravity & Gravity.HORIZONTAL_GRAVITY_MASK) == Gravity.NO_GRAVITY) {
        gravity |= GravityCompat.START;
    }
    if ((gravity & Gravity.VERTICAL_GRAVITY_MASK) == Gravity.NO_GRAVITY) {
        gravity |= Gravity.TOP;
    }
    return gravity;
}