List of usage examples for android.view Gravity CENTER_HORIZONTAL
int CENTER_HORIZONTAL
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From source file:org.immopoly.android.widget.ViewPager.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.//from ww w . j a v a2 s .c o m * * @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 = forcedChildWidth > 0 ? forcedChildWidth : 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:interactive.view.pagereader.VerticalViewPager.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mInLayout = true;//www .j av a 2s . c om 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 isDecoralse? 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:lewa.support.v7.internal.widget.ActionBarView.java
@Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { final int childCount = getChildCount(); if (mIsCollapsable) { int visibleChildren = 0; for (int i = 0; i < childCount; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE && !(child == mMenuView && mMenuView.getChildCount() == 0)) { visibleChildren++;/* w ww .j a va2s . c o m*/ } } if (visibleChildren == 0) { // No size for an empty action bar when collapsable. setMeasuredDimension(0, 0); mIsCollapsed = true; return; } } mIsCollapsed = false; int widthMode = MeasureSpec.getMode(widthMeasureSpec); if (widthMode != MeasureSpec.EXACTLY) { throw new IllegalStateException(getClass().getSimpleName() + " can only be used " + "with android:layout_width=\"MATCH_PARENT\" (or fill_parent)"); } int heightMode = MeasureSpec.getMode(heightMeasureSpec); if (heightMode != MeasureSpec.AT_MOST) { throw new IllegalStateException(getClass().getSimpleName() + " can only be used " + "with android:layout_height=\"wrap_content\""); } int contentWidth = MeasureSpec.getSize(widthMeasureSpec); int maxHeight = mContentHeight > 0 ? mContentHeight : MeasureSpec.getSize(heightMeasureSpec); final int verticalPadding = getPaddingTop() + getPaddingBottom(); final int paddingLeft = getPaddingLeft(); final int paddingRight = getPaddingRight(); final int height = maxHeight - verticalPadding; final int childSpecHeight = MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST); int availableWidth = contentWidth - paddingLeft - paddingRight; int leftOfCenter = availableWidth / 2; int rightOfCenter = leftOfCenter; HomeView homeLayout = mExpandedActionView != null ? mExpandedHomeLayout : mHomeLayout; if (homeLayout.getVisibility() != GONE) { final ViewGroup.LayoutParams lp = homeLayout.getLayoutParams(); int homeWidthSpec; if (lp.width < 0) { homeWidthSpec = MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST); } else { homeWidthSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY); } homeLayout.measure(homeWidthSpec, MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); final int homeWidth = homeLayout.getMeasuredWidth() + homeLayout.getLeftOffset(); availableWidth = Math.max(0, availableWidth - homeWidth); leftOfCenter = Math.max(0, availableWidth - homeWidth); } if (mMenuView != null && mMenuView.getParent() == this) { availableWidth = measureChildView(mMenuView, availableWidth, childSpecHeight, 0); rightOfCenter = Math.max(0, rightOfCenter - mMenuView.getMeasuredWidth()); } if (mIndeterminateProgressView != null && mIndeterminateProgressView.getVisibility() != GONE) { availableWidth = measureChildView(mIndeterminateProgressView, availableWidth, childSpecHeight, 0); rightOfCenter = Math.max(0, rightOfCenter - mIndeterminateProgressView.getMeasuredWidth()); } final boolean showTitle = mTitleLayout != null && mTitleLayout.getVisibility() != GONE && (mDisplayOptions & ActionBar.DISPLAY_SHOW_TITLE) != 0; if (mExpandedActionView == null) { switch (mNavigationMode) { case ActionBar.NAVIGATION_MODE_LIST: if (mListNavLayout != null) { final int itemPaddingSize = showTitle ? mItemPadding * 2 : mItemPadding; availableWidth = Math.max(0, availableWidth - itemPaddingSize); leftOfCenter = Math.max(0, leftOfCenter - itemPaddingSize); mListNavLayout.measure(MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST), MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); final int listNavWidth = mListNavLayout.getMeasuredWidth(); availableWidth = Math.max(0, availableWidth - listNavWidth); leftOfCenter = Math.max(0, leftOfCenter - listNavWidth); } break; case ActionBar.NAVIGATION_MODE_TABS: if (mTabScrollView != null) { final int itemPaddingSize = showTitle ? mItemPadding * 2 : mItemPadding; availableWidth = Math.max(0, availableWidth - itemPaddingSize); leftOfCenter = Math.max(0, leftOfCenter - itemPaddingSize); mTabScrollView.measure(MeasureSpec.makeMeasureSpec(availableWidth, MeasureSpec.AT_MOST), MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); final int tabWidth = mTabScrollView.getMeasuredWidth(); availableWidth = Math.max(0, availableWidth - tabWidth); leftOfCenter = Math.max(0, leftOfCenter - tabWidth); } break; } } View customView = null; if (mExpandedActionView != null) { customView = mExpandedActionView; } else if ((mDisplayOptions & ActionBar.DISPLAY_SHOW_CUSTOM) != 0 && mCustomNavView != null) { customView = mCustomNavView; } if (customView != null) { final ViewGroup.LayoutParams lp = generateLayoutParams(customView.getLayoutParams()); final ActionBar.LayoutParams ablp = lp instanceof ActionBar.LayoutParams ? (ActionBar.LayoutParams) lp : null; int horizontalMargin = 0; int verticalMargin = 0; if (ablp != null) { horizontalMargin = ablp.leftMargin + ablp.rightMargin; verticalMargin = ablp.topMargin + ablp.bottomMargin; } // If the action bar is wrapping to its content height, don't allow a custom // view to FILL_PARENT. int customNavHeightMode; if (mContentHeight <= 0) { customNavHeightMode = MeasureSpec.AT_MOST; } else { customNavHeightMode = lp.height != LayoutParams.WRAP_CONTENT ? MeasureSpec.EXACTLY : MeasureSpec.AT_MOST; } final int customNavHeight = Math.max(0, (lp.height >= 0 ? Math.min(lp.height, height) : height) - verticalMargin); final int customNavWidthMode = lp.width != LayoutParams.WRAP_CONTENT ? MeasureSpec.EXACTLY : MeasureSpec.AT_MOST; int customNavWidth = Math.max(0, (lp.width >= 0 ? Math.min(lp.width, availableWidth) : availableWidth) - horizontalMargin); final int hgrav = (ablp != null ? ablp.gravity : DEFAULT_CUSTOM_GRAVITY) & Gravity.HORIZONTAL_GRAVITY_MASK; // Centering a custom view is treated specially; we try to center within the whole // action bar rather than in the available space. if (hgrav == Gravity.CENTER_HORIZONTAL && lp.width == LayoutParams.FILL_PARENT) { customNavWidth = Math.min(leftOfCenter, rightOfCenter) * 2; } customView.measure(MeasureSpec.makeMeasureSpec(customNavWidth, customNavWidthMode), MeasureSpec.makeMeasureSpec(customNavHeight, customNavHeightMode)); availableWidth -= horizontalMargin + customView.getMeasuredWidth(); } if (mExpandedActionView == null && showTitle) { ///LEWA BEGIN if (true) { Injector.resetTitleLayoutPadding(this); availableWidth = Injector.measureTitleView(mTitleLayout, availableWidth, MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.EXACTLY), 0); } else { availableWidth = measureChildView(mTitleLayout, availableWidth, MeasureSpec.makeMeasureSpec(mContentHeight, MeasureSpec.EXACTLY), 0); } ///LEWA END leftOfCenter = Math.max(0, leftOfCenter - mTitleLayout.getMeasuredWidth()); } if (mContentHeight <= 0) { int measuredHeight = 0; for (int i = 0; i < childCount; i++) { View v = getChildAt(i); int paddedViewHeight = v.getMeasuredHeight() + verticalPadding; if (paddedViewHeight > measuredHeight) { measuredHeight = paddedViewHeight; } } setMeasuredDimension(contentWidth, measuredHeight); } else { setMeasuredDimension(contentWidth, maxHeight); } if (mContextView != null) { mContextView.setContentHeight(getMeasuredHeight()); } if (mProgressView != null && mProgressView.getVisibility() != GONE) { mProgressView.measure( MeasureSpec.makeMeasureSpec(contentWidth - mProgressBarPadding * 2, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.AT_MOST)); } }
From source file:org.drrickorang.loopback.LoopbackActivity.java
public void showToast(String msg) { if (mToast == null) { mToast = Toast.makeText(getApplicationContext(), msg, Toast.LENGTH_SHORT); } else {/*w w w . j ava 2s . c o m*/ mToast.setText(msg); } { mToast.setGravity(Gravity.CENTER_VERTICAL | Gravity.CENTER_HORIZONTAL, 10, 10); mToast.show(); } }
From source file:com.gome.ecmall.custom.VerticalViewPager.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mInLayout = true;//from w w w . ja va 2s . c om 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; // First pass - decor views. We need to do this in two passes so that // we have the proper offsets for non-decor views later. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); int childLeft = 0; int childTop = 0; if (lp.isDecor) { 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; } 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; } childTop += scrollY; child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + child.getMeasuredHeight()); decorCount++; } } } // Page views. Do this once we have the right padding offsets from // above. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); ItemInfo ii; if (!lp.isDecor && (ii = infoForChild(child)) != null) { int loff = (int) (height * ii.offset); int childTop = paddingTop + loff; int childLeft = paddingLeft; if (lp.needsMeasure) { // This was added during layout and needs measurement. // Do it now that we know what we're working with. lp.needsMeasure = false; final int widthSpec = MeasureSpec.makeMeasureSpec(width - paddingLeft - paddingRight, MeasureSpec.EXACTLY); final int heightSpec = MeasureSpec.makeMeasureSpec( (height - paddingTop - paddingBottom) * lp.height, MeasureSpec.EXACTLY); child.measure(widthSpec, heightSpec); } 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()); } } } mLeftPageBounds = paddingLeft; mRightPageBounds = width - paddingRight; mDecorChildCount = decorCount; mFirstLayout = false; }
From source file:org.androfarsh.widget.DragGridLayout.java
private int resolveOffset(int size, int cellSize, int cellCount, int gravity) { switch (gravity) { case Gravity.LEFT: case Gravity.TOP: return 0; case Gravity.RIGHT: case Gravity.BOTTOM: return Math.max(0, size - (cellCount * cellSize)); case Gravity.CENTER_HORIZONTAL: case Gravity.CENTER_VERTICAL: default:/* w ww . j av a 2s. c o m*/ return Math.max(0, (size - (cellCount * cellSize)) / 2); } }
From source file:org.bangbang.support.v4.widget.VerticalViewPager.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mInLayout = true;/*from w w w. j a v a2 s. c om*/ 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 scrollX = getScrollX(); int decorCount = 0; // First pass - decor views. We need to do this in two passes so that // we have the proper offsets for non-decor views later. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); int childLeft = 0; int childTop = 0; if (lp.isDecor) { 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; } 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; } childLeft += scrollX; child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + child.getMeasuredHeight()); decorCount++; } } } // Page views. Do this once we have the right padding offsets from above. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); ItemInfo ii; if (!lp.isDecor && (ii = infoForChild(child)) != null) { int loff = (int) (height * ii.offset); int childLeft = paddingLeft; int childTop = paddingBottom + loff; if (lp.needsMeasure) { // This was added during layout and needs measurement. // Do it now that we know what we're working with. lp.needsMeasure = false; final int widthSpec = MeasureSpec .makeMeasureSpec((int) ((width - paddingLeft - paddingRight)), MeasureSpec.EXACTLY); final int heightSpec = MeasureSpec.makeMeasureSpec( (int) ((height - paddingTop - paddingBottom) * lp.widthFactor), MeasureSpec.EXACTLY); child.measure(widthSpec, heightSpec); } 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()); } } } mTopPageBounds = paddingTop; mBottomPageBounds = height - paddingBottom; mDecorChildCount = decorCount; mFirstLayout = false; }
From source file:ab.util.AbDialogUtil.java
/** * AlertDialog ??//from w ww .j a v a 2s . co m */ public static AlertDialog getAlertDialogWithoutRemove(Context mContext, int layout, double showWidth) { final AlertDialog alerDialog = new AlertDialog.Builder(mContext).create(); alerDialog.show(); alerDialog.setCanceledOnTouchOutside(true); Window window = alerDialog.getWindow(); // ?? int height = ScreenUtils.getScreenHeight(mContext); int width = ScreenUtils.getScreenWidth(mContext); WindowManager.LayoutParams params = window.getAttributes(); params.width = (int) (width * showWidth); params.gravity = Gravity.CENTER_HORIZONTAL; alerDialog.onWindowAttributesChanged(params); window.setContentView(layout); return alerDialog; }
From source file:administrator.example.com.myscrollview.VerticalViewPager.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./*from w ww .j a v a 2s. c o m*/ * * @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 scrollY = getScrollY(); int paddingTop = getPaddingTop(); int paddingBottom = getPaddingBottom(); final int height = getHeight(); 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 vgrav = lp.gravity & Gravity.VERTICAL_GRAVITY_MASK; int childTop = 0; switch (vgrav) { default: childTop = paddingTop; break; case Gravity.TOP: childTop = paddingTop; paddingTop += child.getHeight(); break; case Gravity.CENTER_HORIZONTAL: childTop = Math.max((height - child.getMeasuredHeight()) / 2, paddingTop); break; case Gravity.BOTTOM: childTop = height - paddingBottom - child.getMeasuredHeight(); paddingBottom += child.getMeasuredHeight(); break; } /* end of switch */ childTop += scrollY; final int childOffset = childTop - child.getTop(); if (childOffset != 0) { child.offsetTopAndBottom(childOffset); } /* end of if */ } /* end of for */ } /* end of for */ if (mOnPageChangeListener != null) { mOnPageChangeListener.onPageScrolled(position, offset, offsetPixels); } /* end of if */ if (mInternalPageChangeListener != null) { mInternalPageChangeListener.onPageScrolled(position, offset, offsetPixels); } /* end of if */ mCalledSuper = true; }
From source file:com.jackie.sample.custom_view.CustomViewPagerInternal.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { mInLayout = true;//from w w w .j a va2 s.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 scrollX = getScrollX(); int decorCount = 0; // First pass - decor views. We need to do this in two passes so that // we have the proper offsets for non-decor views later. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); int childLeft = 0; int childTop = 0; if (lp.isDecor) { 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; } 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; } childLeft += scrollX; child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + child.getMeasuredHeight()); decorCount++; } } } // Page views. Do this once we have the right padding offsets from above. for (int i = 0; i < count; i++) { final View child = getChildAt(i); if (child.getVisibility() != GONE) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); ItemInfo ii; if (!lp.isDecor && (ii = infoForChild(child)) != null) { int loff = (int) (width * ii.offset); int childLeft = paddingLeft + loff; int childTop = paddingTop; if (lp.needsMeasure) { // This was added during layout and needs measurement. // Do it now that we know what we're working with. lp.needsMeasure = false; final int widthSpec = MeasureSpec.makeMeasureSpec( (int) ((width - paddingLeft - paddingRight) * lp.widthFactor), MeasureSpec.EXACTLY); final int heightSpec = MeasureSpec.makeMeasureSpec(height - paddingTop - paddingBottom, MeasureSpec.EXACTLY); child.measure(widthSpec, heightSpec); } 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()); } } } mTopPageBounds = paddingTop; mBottomPageBounds = height - paddingBottom; mDecorChildCount = decorCount; mFirstLayout = false; }