List of usage examples for android.view View layout
@SuppressWarnings({ "unchecked" })
public void layout(int l, int t, int r, int b)
This is the second phase of the layout mechanism.
From source file:com.cxsplay.wallyskim.widget.flexbox.FlexboxLayout.java
/** * Place a single View when the layout direction is vertical ({@link #mFlexDirection} is * either {@link #FLEX_DIRECTION_COLUMN} or {@link #FLEX_DIRECTION_COLUMN_REVERSE}). * * @param view the View to be placed * @param flexLine the {@link FlexLine} where the View belongs to * @param isRtl {@code true} if the layout direction is right to left, {@code false} * otherwise/* w ww . j a v a2 s . com*/ * @param alignItems the align items attribute of this FlexboxLayout * @param left the left position of the flex line where the View belongs to. The actual * View's left position is shifted depending on the isRtl and alignItems * attributes * @param top the top position of the View, which the View's margin is already taken * into account * @param right the right position of the flex line where the View belongs to. The actual * View's right position is shifted depending on the isRtl and alignItems * attributes * @param bottom the bottom position of the View, which the View's margin is already taken * into account * @see #getAlignItems() * @see #setAlignItems(int) * @see LayoutParams#alignSelf */ private void layoutSingleChildVertical(View view, FlexLine flexLine, boolean isRtl, int alignItems, int left, int top, int right, int bottom) { LayoutParams lp = (LayoutParams) view.getLayoutParams(); if (lp.alignSelf != LayoutParams.ALIGN_SELF_AUTO) { // Expecting the values for alignItems and alignSelf match except for ALIGN_SELF_AUTO. // Assigning the alignSelf value as alignItems should work. alignItems = lp.alignSelf; } int crossSize = flexLine.mCrossSize; switch (alignItems) { case ALIGN_ITEMS_FLEX_START: // Intentional fall through case ALIGN_ITEMS_STRETCH: // Intentional fall through case ALIGN_ITEMS_BASELINE: if (!isRtl) { view.layout(left + lp.leftMargin, top, right + lp.leftMargin, bottom); } else { view.layout(left - lp.rightMargin, top, right - lp.rightMargin, bottom); } break; case ALIGN_ITEMS_FLEX_END: if (!isRtl) { view.layout(left + crossSize - view.getMeasuredWidth() - lp.rightMargin, top, right + crossSize - view.getMeasuredWidth() - lp.rightMargin, bottom); } else { // If the flexWrap == FLEX_WRAP_WRAP_REVERSE, the direction of the // flexEnd is flipped (from left to right). view.layout(left - crossSize + view.getMeasuredWidth() + lp.leftMargin, top, right - crossSize + view.getMeasuredWidth() + lp.leftMargin, bottom); } break; case ALIGN_ITEMS_CENTER: int leftFromCrossAxis = (crossSize - view.getMeasuredWidth() + MarginLayoutParamsCompat.getMarginStart(lp) - MarginLayoutParamsCompat.getMarginEnd(lp)) / 2; if (!isRtl) { view.layout(left + leftFromCrossAxis, top, right + leftFromCrossAxis, bottom); } else { view.layout(left - leftFromCrossAxis, top, right - leftFromCrossAxis, bottom); } break; } }
From source file:cn.bingoogolapple.swipebacklayout.BGASwipeBackLayout.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { final boolean isLayoutRtl = isLayoutRtlSupport(); if (isLayoutRtl) { mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_RIGHT); } else {// ww w . j av a2 s . c o m mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_LEFT); } final int width = r - l; final int paddingStart = isLayoutRtl ? getPaddingRight() : getPaddingLeft(); final int paddingEnd = isLayoutRtl ? getPaddingLeft() : getPaddingRight(); final int paddingTop = getPaddingTop(); final int childCount = getChildCount(); int xStart = paddingStart; int nextXStart = xStart; if (mFirstLayout) { mSlideOffset = mCanSlide && mPreservedOpenState ? 1.f : 0.f; } for (int i = 0; i < childCount; i++) { final View child = getChildAt(i); if (child.getVisibility() == GONE) { continue; } final LayoutParams lp = (LayoutParams) child.getLayoutParams(); final int childWidth = child.getMeasuredWidth(); int offset = 0; if (lp.slideable) { final int margin = lp.leftMargin + lp.rightMargin; final int range = Math.min(nextXStart, width - paddingEnd - mOverhangSize) - xStart - margin; mSlideRange = range; final int lpMargin = isLayoutRtl ? lp.rightMargin : lp.leftMargin; lp.dimWhenOffset = xStart + lpMargin + range + childWidth / 2 > width - paddingEnd; final int pos = (int) (range * mSlideOffset); xStart += pos + lpMargin; mSlideOffset = (float) pos / mSlideRange; } else if (mCanSlide && mParallaxBy != 0) { offset = (int) ((1 - mSlideOffset) * mParallaxBy); xStart = nextXStart; } else { xStart = nextXStart; } final int childRight; final int childLeft; if (isLayoutRtl) { childRight = width - xStart + offset; childLeft = childRight - childWidth; } else { childLeft = xStart - offset; childRight = childLeft + childWidth; } final int childTop = paddingTop; final int childBottom = childTop + child.getMeasuredHeight(); child.layout(childLeft, paddingTop, childRight, childBottom); nextXStart += child.getWidth(); } if (mFirstLayout) { if (mCanSlide) { if (mParallaxBy != 0) { parallaxOtherViews(mSlideOffset); } if (((LayoutParams) mSlideableView.getLayoutParams()).dimWhenOffset) { dimChildView(mSlideableView, mSlideOffset, mSliderFadeColor); } } else { // Reset the dim level of all children; it's irrelevant when nothing moves. for (int i = 0; i < childCount; i++) { dimChildView(getChildAt(i), 0, mSliderFadeColor); } } updateObscuredViewsVisibility(mSlideableView); } mFirstLayout = false; }
From source file:de.andacaydin.bidirectionalviewpagerlibrary.BiDirectionalViewPager.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { Log.i(TAG, "onLayout(" + changed + "l: " + l + " , t:" + t + " r:" + r + " b:" + b); mInLayout = true;/*ww w.j a v a2 s . com*/ populate(); mInLayout = false; final int count = getChildCount(); final int sizeX = r - l; final int sizeY = b - t; for (int i = 0; i < count; i++) { View child = getChildAt(i); ItemInfo ii; if ((ii = infoForChild(child)) != null) { int offX = 0; int offY = 0; //calculate off according to position: switch (ii.position) { case 0: offX = sizeX * 1; offY = sizeY * 1; break; case 1: offX = sizeX * 1; offY = sizeY * 0; break; case 4: offX = sizeX * 0; offY = sizeY * 1; break; case 2: offX = sizeX * 2; offY = sizeY * 1; break; case 3: offX = sizeX * 1; offY = sizeY * 2; break; default: throw new UnsupportedOperationException("position range 0-4 !"); } int childLeft = getPaddingLeft(); int childTop = getPaddingTop(); childLeft += offX; childTop += offY; if (DEBUG) Log.v(TAG, "onLayout: Positioning #" + i + " pos:" + ii.position + " f=" + ii.object.getClass().getName() + ":" + childLeft + "," + childTop + " " + child.getMeasuredWidth() + "x" + child.getMeasuredHeight()); child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + child.getMeasuredHeight()); } } }
From source file:com.mark.quick.ui.view.swipebacklayout.SwipeBackLayout.java
@Override protected void onLayout(boolean changed, int l, int t, int r, int b) { final boolean isLayoutRtl = isLayoutRtlSupport(); if (isLayoutRtl) { mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_RIGHT); } else {/*www . j av a2 s . com*/ mDragHelper.setEdgeTrackingEnabled(ViewDragHelper.EDGE_LEFT); } final int width = r - l; final int paddingStart = isLayoutRtl ? getPaddingRight() : getPaddingLeft(); final int paddingEnd = isLayoutRtl ? getPaddingLeft() : getPaddingRight(); final int paddingTop = getPaddingTop(); final int childCount = getChildCount(); int xStart = paddingStart; int nextXStart = xStart; if (mFirstLayout) { mSlideOffset = mCanSlide && mPreservedOpenState ? 1.f : 0.f; } for (int i = 0; i < childCount; i++) { final View child = getChildAt(i); if (child.getVisibility() == GONE) { continue; } final LayoutParams lp = (LayoutParams) child.getLayoutParams(); final int childWidth = child.getMeasuredWidth(); int offset = 0; if (lp.slideable) { final int margin = lp.leftMargin + lp.rightMargin; final int range = Math.min(nextXStart, width - paddingEnd - mOverhangSize) - xStart - margin; mSlideRange = range; final int lpMargin = isLayoutRtl ? lp.rightMargin : lp.leftMargin; lp.dimWhenOffset = xStart + lpMargin + range + childWidth / 2 > width - paddingEnd; final int pos = (int) (range * mSlideOffset); xStart += pos + lpMargin; mSlideOffset = (float) pos / mSlideRange; } else if (mCanSlide && mParallaxBy != 0) { offset = (int) ((1 - mSlideOffset) * mParallaxBy); xStart = nextXStart; } else { xStart = nextXStart; } final int childRight; final int childLeft; if (isLayoutRtl) { childRight = width - xStart + offset; childLeft = childRight - childWidth; } else { childLeft = xStart - offset; childRight = childLeft + childWidth; } final int childTop = paddingTop; final int childBottom = childTop + child.getMeasuredHeight(); LogUtils.e("%s--%s onLayout[%s,%s,%s,%s][pt=%s,mb=%s]", mActivity.getClass().getSimpleName() + hashCode(), i, childLeft, paddingTop, childRight, childBottom, child.getPaddingTop(), lp.bottomMargin); child.layout(childLeft, paddingTop, childRight, childBottom); nextXStart += child.getWidth(); } if (mFirstLayout) { if (mCanSlide) { if (mParallaxBy != 0) { parallaxOtherViews(mSlideOffset); } if (((LayoutParams) mSlideableView.getLayoutParams()).dimWhenOffset) { dimChildView(mSlideableView, mSlideOffset, mSliderFadeColor); } } else { // Reset the dim level of all children; it's irrelevant when nothing moves. for (int i = 0; i < childCount; i++) { dimChildView(getChildAt(i), 0, mSliderFadeColor); } } updateObscuredViewsVisibility(mSlideableView); } mFirstLayout = false; }
From source file:cn.ieclipse.af.view.StaggeredGridView.java
/** * Measure and layout all currently visible children. * * @param queryAdapter true to requery the adapter for view data *///w w w .java 2s .c o m final void layoutChildren(boolean queryAdapter) { final int paddingLeft = getPaddingLeft(); final int paddingRight = getPaddingRight(); final int itemMargin = mItemMargin; final int colWidth = (getWidth() - paddingLeft - paddingRight - itemMargin * (mColCount - 1)) / mColCount; int rebuildLayoutRecordsBefore = -1; int rebuildLayoutRecordsAfter = -1; Arrays.fill(mItemBottoms, Integer.MIN_VALUE); final int childCount = getChildCount(); for (int i = 0; i < childCount; i++) { View child = getChildAt(i); LayoutParams lp = (LayoutParams) child.getLayoutParams(); final int col = lp.column; final int position = mFirstPosition + i; final boolean needsLayout = queryAdapter || child.isLayoutRequested(); if (queryAdapter) { View newView = obtainView(position, child); if (newView != child) { removeViewAt(i); addView(newView, i); child = newView; } lp = (LayoutParams) child.getLayoutParams(); // Might have changed } final int span = Math.min(mColCount, lp.span); final int widthSize = colWidth * span + itemMargin * (span - 1); if (needsLayout) { final int widthSpec = MeasureSpec.makeMeasureSpec(widthSize, MeasureSpec.EXACTLY); final int heightSpec; if (lp.height == LayoutParams.WRAP_CONTENT) { heightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); } else { heightSpec = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY); } child.measure(widthSpec, heightSpec); } int childTop = mItemBottoms[col] > Integer.MIN_VALUE ? mItemBottoms[col] + mItemMargin : child.getTop(); if (span > 1) { int lowest = childTop; for (int j = col + 1; j < col + span; j++) { final int bottom = mItemBottoms[j] + mItemMargin; if (bottom > lowest) { lowest = bottom; } } childTop = lowest; } final int childHeight = child.getMeasuredHeight(); final int childBottom = childTop + childHeight; final int childLeft = paddingLeft + col * (colWidth + itemMargin); final int childRight = childLeft + child.getMeasuredWidth(); child.layout(childLeft, childTop, childRight, childBottom); for (int j = col; j < col + span; j++) { mItemBottoms[j] = childBottom; } final LayoutRecord rec = mLayoutRecords.get(position); if (rec != null && rec.height != childHeight) { // Invalidate our layout records for everything before this. rec.height = childHeight; rebuildLayoutRecordsBefore = position; } if (rec != null && rec.span != span) { // Invalidate our layout records for everything after this. rec.span = span; rebuildLayoutRecordsAfter = position; } } // Update mItemBottoms for any empty columns for (int i = 0; i < mColCount; i++) { if (mItemBottoms[i] == Integer.MIN_VALUE) { mItemBottoms[i] = mItemTops[i]; } } if (rebuildLayoutRecordsBefore >= 0 || rebuildLayoutRecordsAfter >= 0) { if (rebuildLayoutRecordsBefore >= 0) { invalidateLayoutRecordsBeforePosition(rebuildLayoutRecordsBefore); } if (rebuildLayoutRecordsAfter >= 0) { invalidateLayoutRecordsAfterPosition(rebuildLayoutRecordsAfter); } for (int i = 0; i < childCount; i++) { final int position = mFirstPosition + i; final View child = getChildAt(i); final LayoutParams lp = (LayoutParams) child.getLayoutParams(); LayoutRecord rec = mLayoutRecords.get(position); if (rec == null) { rec = new LayoutRecord(); mLayoutRecords.put(position, rec); } rec.column = lp.column; rec.height = child.getHeight(); rec.id = lp.id; rec.span = Math.min(mColCount, lp.span); } } }
From source file:org.bangbang.support.v4.widget.HListView.java
/** * Layout a child that has been measured, preserving its top position. * TODO: unify with setUpChild./*from www.jav a 2 s . co m*/ * @param child The child. */ private void relayoutMeasuredItem(View child) { final int w = child.getMeasuredWidth(); final int h = child.getMeasuredHeight(); final int childLeft = child.getLeft();//mListPadding.left; final int childRight = childLeft + w; final int childTop = mListPadding.top;//child.getTop(); final int childBottom = childTop + h; child.layout(childLeft, childTop, childRight, childBottom); }
From source file:net.robotmedia.acv.ui.widget.OcrLayout.java
public boolean createTriggerCaptureBox(Point pt) { final int IDEAL_CAP_WIDTH = 100; final int IDEAL_CAP_HALF_WIDTH = IDEAL_CAP_WIDTH / 2; final int IDEAL_CAP_HEIGHT = 450; final int IDEAL_CAP_ABOVE_PT = 35; final int IDEAL_LOOKAHEAD = 30; final int FALLBACK_WIDTH = 70; final int FALLBACK_HEIGHT = 200; final int FALLBACK_ABOVE_PT = 10; View v = this.comicView; if (v != null) { try {/*from www . j av a 2s . c o m*/ // Only create the bitmap that contains the entire screen once if (this.lastScreenshot == null) { this.lastScreenshot = Bitmap.createBitmap(v.getWidth(), v.getHeight(), Bitmap.Config.ARGB_8888); this.captureCanvas = new Canvas(this.lastScreenshot); } v.layout(0, 0, v.getWidth(), v.getHeight()); // Draw the comic view to the lastScreenshot bitmap v.draw(this.captureCanvas); Rect cropRect = new Rect(); if (this.textOrientation == TEXT_ORIENTATION_HORIZONTAL) { cropRect.left = Math.max(0, pt.x - IDEAL_CAP_ABOVE_PT); cropRect.top = Math.max(0, pt.y - IDEAL_CAP_HALF_WIDTH); cropRect.right = Math.min(v.getWidth(), pt.x + IDEAL_CAP_HEIGHT); cropRect.bottom = Math.min(v.getHeight(), pt.y + IDEAL_CAP_HALF_WIDTH); } else // Vertical or Auto { cropRect.left = Math.max(0, pt.x - IDEAL_CAP_HALF_WIDTH); cropRect.top = Math.max(0, pt.y - IDEAL_CAP_ABOVE_PT); cropRect.right = Math.min(v.getWidth(), pt.x + IDEAL_CAP_HALF_WIDTH); cropRect.bottom = Math.min(v.getHeight(), pt.y + IDEAL_CAP_HEIGHT); } // Get bitmap that contains the area to crop Bitmap cropBmp = Bitmap.createBitmap(this.lastScreenshot, cropRect.left, cropRect.top, cropRect.width(), cropRect.height()); // Get the click point relative to the cropped area Point ptInCropRect = new Point(pt.x - cropRect.left, pt.y - cropRect.top); // Crop Pix pixs = ReadFile.readBitmap(cropBmp); if (pixs == null) { return false; } cropBmp.recycle(); // Convert to grayscale pixs = Convert.convertTo8(pixs); if (pixs == null) { return false; } Pix tempOtsu = Binarize.otsuAdaptiveThreshold(pixs, 2000, 2000, 0, 0, 0.0f); if (tempOtsu == null) { return false; } float ave = 0.0f; // Get the average intensity of the pixels around the click point if (this.textOrientation == TEXT_ORIENTATION_HORIZONTAL) { ave = Pix.averageInRect(tempOtsu, (int) (ptInCropRect.x * 0.9), (int) (ptInCropRect.y - (tempOtsu.getHeight() * 0.95) / 2.0), (int) (tempOtsu.getWidth() * 0.25), (int) (tempOtsu.getHeight() * 0.95)); } else // Vertical or Auto { ave = Pix.averageInRect(tempOtsu, (int) (ptInCropRect.x - (tempOtsu.getWidth() * 0.95) / 2.0), (int) (ptInCropRect.y * 0.9), (int) (tempOtsu.getWidth() * 0.95), (int) (tempOtsu.getHeight() * 0.25)); } tempOtsu.recycle(); // If background is dark if (ave >= 0.51f) { // Negate image boolean invertStatus = pixs.invert(); if (!invertStatus) { return false; } } // Blur to reduce noise pixs = Convolve.blockconvGray(pixs, 1, 1); if (pixs == null) { return false; } // Apply unsharp mask pixs = Enhance.unsharpMasking(pixs, 5, 2.5f); if (pixs == null) { return false; } // Binarize pixs = Binarize.otsuAdaptiveThreshold(pixs, 2000, 2000, 0, 0, 0.0f); if (pixs == null) { return false; } // Remove black pixels connected to the border. // This eliminates annoying things like text bubbles. pixs = Seedfill.removeBorderConnComps(pixs, 8); if (pixs == null) { return false; } // Find the black pixel closest to the click point Point nearestPixel = LeptUtils.findNearestBlackPixel(pixs, ptInCropRect.x, ptInCropRect.y, 40); // Get a bounding box surrounding the clicked text Rect boundingBox = BoundingTextRect.getBoundingRect(pixs, nearestPixel.x, nearestPixel.y, (this.textOrientation != TEXT_ORIENTATION_HORIZONTAL), IDEAL_LOOKAHEAD); // Form the capture box size and position based on click point and bounding box this.captureBox = new Rect(); this.captureBox.left = pt.x - ptInCropRect.x + boundingBox.left; this.captureBox.top = pt.y - ptInCropRect.y + boundingBox.top; this.captureBox.right = this.captureBox.left + boundingBox.width(); this.captureBox.bottom = this.captureBox.top + boundingBox.height(); // If could not find adequate bounding rectangle, fallback to a default size if (this.captureBox.width() <= 2 || this.captureBox.height() <= 2) { if (this.textOrientation == TEXT_ORIENTATION_HORIZONTAL) { this.captureBox = new Rect(); this.captureBox.left = Math.max(0, pt.x - FALLBACK_ABOVE_PT); this.captureBox.top = Math.max(0, pt.y - FALLBACK_WIDTH / 2); this.captureBox.right = Math.min(v.getWidth(), pt.x + FALLBACK_HEIGHT); this.captureBox.bottom = Math.min(v.getHeight(), pt.y + FALLBACK_WIDTH / 2); } else // Vertical or Auto { this.captureBox = new Rect(); this.captureBox.left = Math.max(0, pt.x - FALLBACK_WIDTH / 2); this.captureBox.top = Math.max(0, pt.y - FALLBACK_ABOVE_PT); this.captureBox.right = Math.min(v.getWidth(), pt.x + FALLBACK_WIDTH / 2); this.captureBox.bottom = Math.min(v.getHeight(), pt.y + FALLBACK_HEIGHT); } } pixs.recycle(); } catch (Exception e) { // If we're here, it's probably an out-of-memory exception Log.e(LOG_TAG, "Exception in processTriggerCapture()! " + e); return false; } } this.isTriggerCapture = true; return true; }
From source file:cc.flydev.launcher.Page.java
@Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { if (!mIsDataReady || getChildCount() == 0) { return;// ww w . j ava 2 s. c om } if (DEBUG) Log.d(TAG, "PagedView.onLayout()"); final int childCount = getChildCount(); int screenWidth = getViewportWidth(); int offsetX = getViewportOffsetX(); int offsetY = getViewportOffsetY(); // Update the viewport offsets mViewport.offset(offsetX, offsetY); final boolean isRtl = isLayoutRtl(); final int startIndex = isRtl ? childCount - 1 : 0; final int endIndex = isRtl ? -1 : childCount; final int delta = isRtl ? -1 : 1; int verticalPadding = getPaddingTop() + getPaddingBottom(); int childLeft = mFirstChildLeft = offsetX + (screenWidth - getChildWidth(startIndex)) / 2; if (mPageScrolls == null || getChildCount() != mChildCountOnLastLayout) { mPageScrolls = new int[getChildCount()]; } for (int i = startIndex; i != endIndex; i += delta) { final View child = getPageAt(i); if (child.getVisibility() != View.GONE) { LayoutParams lp = (LayoutParams) child.getLayoutParams(); int childTop; if (lp.isFullScreenPage) { childTop = offsetY; } else { childTop = offsetY + getPaddingTop() + mInsets.top; if (mCenterPagesVertically) { childTop += (getViewportHeight() - mInsets.top - mInsets.bottom - verticalPadding - child.getMeasuredHeight()) / 2; } } final int childWidth = child.getMeasuredWidth(); final int childHeight = child.getMeasuredHeight(); if (DEBUG) Log.d(TAG, "\tlayout-child" + i + ": " + childLeft + ", " + childTop); child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + childHeight); // We assume the left and right padding are equal, and hence center the pages // horizontally int scrollOffset = (getViewportWidth() - childWidth) / 2; mPageScrolls[i] = childLeft - scrollOffset - offsetX; if (i != endIndex - delta) { childLeft += childWidth + scrollOffset; int nextScrollOffset = (getViewportWidth() - getChildWidth(i + delta)) / 2; childLeft += nextScrollOffset; } } } if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { setHorizontalScrollBarEnabled(false); updateCurrentPageScroll(); setHorizontalScrollBarEnabled(true); mFirstLayout = false; } if (childCount > 0) { final int index = isLayoutRtl() ? 0 : childCount - 1; mMaxScrollX = getScrollForPage(index); } else { mMaxScrollX = 0; } if (mScroller.isFinished() && mChildCountOnLastLayout != getChildCount() && !mDeferringForDelete) { if (mRestorePage != INVALID_RESTORE_PAGE) { setCurrentPage(mRestorePage); mRestorePage = INVALID_RESTORE_PAGE; } else { setCurrentPage(getNextPage()); } } mChildCountOnLastLayout = getChildCount(); if (isReordering(true)) { updateDragViewTranslationDuringDrag(); } }
From source file:android.support.designox.widget.CoordinatorLayout.java
/** * Lay out a child view with no special handling. This will position the child as * if it were within a FrameLayout or similar simple frame. * * @param child child view to lay out//from ww w .j a va 2 s.c o m * @param layoutDirection ViewCompat constant for the desired layout direction */ private void layoutChild(View child, int layoutDirection) { final LayoutParams lp = (LayoutParams) child.getLayoutParams(); final Rect parent = mTempRect1; parent.set(getPaddingLeft() + lp.leftMargin, getPaddingTop() + lp.topMargin, getWidth() - getPaddingRight() - lp.rightMargin, getHeight() - getPaddingBottom() - lp.bottomMargin); if (mLastInsets != null && ViewCompat.getFitsSystemWindows(this) && !ViewCompat.getFitsSystemWindows(child)) { // If we're set to handle insets but this child isn't, then it has been measured as // if there are no insets. We need to lay it out to match. parent.left += mLastInsets.getSystemWindowInsetLeft(); parent.top += mLastInsets.getSystemWindowInsetTop(); parent.right -= mLastInsets.getSystemWindowInsetRight(); parent.bottom -= mLastInsets.getSystemWindowInsetBottom(); } final Rect out = mTempRect2; GravityCompat.apply(resolveGravity(lp.gravity), child.getMeasuredWidth(), child.getMeasuredHeight(), parent, out, layoutDirection); child.layout(out.left, out.top, out.right, out.bottom); }
From source file:com.n2hsu.launcher.Page.java
@Override protected void onLayout(boolean changed, int left, int top, int right, int bottom) { if (!mIsDataReady || getChildCount() == 0) { return;/*www.java 2 s.co m*/ } if (DEBUG) Log.d(TAG, "PagedView.onLayout()"); final int childCount = getChildCount(); int screenWidth = getViewportWidth(); int offsetX = getViewportOffsetX(); int offsetY = getViewportOffsetY(); // Update the viewport offsets mViewport.offset(offsetX, offsetY); final boolean isRtl = isLayoutRtl(); final int startIndex = isRtl ? childCount - 1 : 0; final int endIndex = isRtl ? -1 : childCount; final int delta = isRtl ? -1 : 1; int verticalPadding = getPaddingTop() + getPaddingBottom(); int childLeft = mFirstChildLeft = offsetX + (screenWidth - getChildWidth(startIndex)) / 2; if (mPageScrolls == null || getChildCount() != mChildCountOnLastLayout) { mPageScrolls = new int[getChildCount()]; } for (int i = startIndex; i != endIndex; i += delta) { final View child = getPageAt(i); if (child.getVisibility() != View.GONE) { LayoutParams lp = (LayoutParams) child.getLayoutParams(); int childTop; if (lp.isFullScreenPage) { childTop = offsetY; } else { childTop = offsetY + getPaddingTop() + mInsets.top; if (mCenterPagesVertically) { childTop += (getViewportHeight() - mInsets.top - mInsets.bottom - verticalPadding - child.getMeasuredHeight()) / 2; } } final int childWidth = child.getMeasuredWidth(); final int childHeight = child.getMeasuredHeight(); if (DEBUG) Log.d(TAG, "\tlayout-child" + i + ": " + childLeft + ", " + childTop); child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop + childHeight); // We assume the left and right padding are equal, and hence // center the pages // horizontally int scrollOffset = (getViewportWidth() - childWidth) / 2; mPageScrolls[i] = childLeft - scrollOffset - offsetX; if (i != endIndex - delta) { childLeft += childWidth + scrollOffset; int nextScrollOffset = (getViewportWidth() - getChildWidth(i + delta)) / 2; childLeft += nextScrollOffset; } } } if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) { setHorizontalScrollBarEnabled(false); updateCurrentPageScroll(); setHorizontalScrollBarEnabled(true); mFirstLayout = false; } if (childCount > 0) { final int index = isLayoutRtl() ? 0 : childCount - 1; mMaxScrollX = getScrollForPage(index); } else { mMaxScrollX = 0; } if (mScroller.isFinished() && mChildCountOnLastLayout != getChildCount() && !mDeferringForDelete) { if (mRestorePage != INVALID_RESTORE_PAGE) { setCurrentPage(mRestorePage); mRestorePage = INVALID_RESTORE_PAGE; } else { setCurrentPage(getNextPage()); } } mChildCountOnLastLayout = getChildCount(); if (isReordering(true)) { updateDragViewTranslationDuringDrag(); } }