/// <summary>Shows only the specified child.</summary>
/// <remarks>
/// Shows only the specified child. The other displays Views exit the screen,
/// optionally with the with the
/// <see cref="getOutAnimation()">out animation</see>
/// and
/// the specified child enters the screen, optionally with the
/// <see cref="getInAnimation()">in animation</see>
/// .
/// </remarks>
/// <param name="childIndex">The index of the child to be shown.</param>
/// <param name="animate">
/// Whether or not to use the in and out animations, defaults
/// to true.
/// </param>
internal virtual void showOnly(int childIndex, bool animate_1)
{
int count = getChildCount();
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (i == childIndex)
{
if (animate_1 && mInAnimation != null)
{
child.startAnimation(mInAnimation);
}
child.setVisibility(android.view.View.VISIBLE);
mFirstTime = false;
}
else
{
if (animate_1 && mOutAnimation != null && child.getVisibility() == android.view.View
.VISIBLE)
{
child.startAnimation(mOutAnimation);
}
else
{
if (child.getAnimation() == mInAnimation)
{
child.clearAnimation();
}
}
child.setVisibility(android.view.View.GONE);
}
}
}
}
/// <summary>Maps a point to a position in the list.</summary>
/// <remarks>Maps a point to a position in the list.</remarks>
/// <param name="x">X in local coordinate</param>
/// <param name="y">Y in local coordinate</param>
/// <returns>
/// The position of the item which contains the specified point, or
/// <see cref="android.widget.AdapterView.INVALID_POSITION">android.widget.AdapterView.INVALID_POSITION
/// </see>
/// if the point does not intersect an item.
/// </returns>
public virtual int pointToPosition(int x, int y)
{
android.graphics.Rect frame = mTouchFrame;
if (frame == null)
{
mTouchFrame = new android.graphics.Rect();
frame = mTouchFrame;
}
int count = getChildCount();
{
for (int i = count - 1; i >= 0; i--)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() == android.view.View.VISIBLE)
{
child.getHitRect(frame);
if (frame.contains(x, y))
{
return(mFirstPosition + i);
}
}
}
}
return(android.widget.AdapterView.INVALID_POSITION);
}
/// <summary><p>Measures the preferred width of each child, including its margins.</p>
/// </summary>
/// <param name="widthMeasureSpec">the width constraint imposed by our parent</param>
/// <returns>
/// an array of integers corresponding to the width of each cell, or
/// column, in this row
/// <hide></hide>
/// </returns>
internal virtual int[] getColumnsWidths(int widthMeasureSpec)
{
int numColumns = getVirtualChildCount();
if (mColumnWidths == null || numColumns != mColumnWidths.Length)
{
mColumnWidths = new int[numColumns];
}
int[] columnWidths = mColumnWidths;
{
for (int i = 0; i < numColumns; i++)
{
android.view.View child = getVirtualChildAt(i);
if (child != null && child.getVisibility() != GONE)
{
android.widget.TableRow.LayoutParams layoutParams = (android.widget.TableRow.LayoutParams
)child.getLayoutParams();
if (layoutParams.span == 1)
{
int spec;
switch (layoutParams.width)
{
case android.view.ViewGroup.LayoutParams.WRAP_CONTENT:
{
spec = getChildMeasureSpec(widthMeasureSpec, 0, android.view.ViewGroup.LayoutParams
.WRAP_CONTENT);
break;
}
case android.view.ViewGroup.LayoutParams.MATCH_PARENT:
{
spec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View.MeasureSpec
.UNSPECIFIED);
break;
}
default:
{
spec = android.view.View.MeasureSpec.makeMeasureSpec(layoutParams.width, android.view.View
.MeasureSpec.EXACTLY);
break;
}
}
child.measure(spec, spec);
int width = child.getMeasuredWidth() + layoutParams.leftMargin + layoutParams.rightMargin;
columnWidths[i] = width;
}
else
{
columnWidths[i] = 0;
}
}
else
{
columnWidths[i] = 0;
}
}
}
return(columnWidths);
}
/// <summary>Returns the View that should receive a touch at the given coordinates.</summary>
/// <remarks>Returns the View that should receive a touch at the given coordinates.</remarks>
/// <param name="rawX">The raw X.</param>
/// <param name="rawY">The raw Y.</param>
/// <returns>The view that should receive the touches, or null if there is not one.</returns>
private android.view.View findViewForTouch(int rawX, int rawY)
{
// Reverse order so the child drawn on top gets first dibs.
int containerCoordsX = rawX - mContainerRawLocation[0];
int containerCoordsY = rawY - mContainerRawLocation[1];
android.graphics.Rect frame = mTempRect;
android.view.View closestChild = null;
int closestChildDistanceSq = int.MaxValue;
{
for (int i = mContainer.getChildCount() - 1; i >= 0; i--)
{
android.view.View child = mContainer.getChildAt(i);
if (child.getVisibility() != android.view.View.VISIBLE)
{
continue;
}
child.getHitRect(frame);
if (frame.contains(containerCoordsX, containerCoordsY))
{
return(child);
}
int distanceX;
if (containerCoordsX >= frame.left && containerCoordsX <= frame.right)
{
distanceX = 0;
}
else
{
distanceX = System.Math.Min(System.Math.Abs(frame.left - containerCoordsX), System.Math.Abs
(containerCoordsX - frame.right));
}
int distanceY;
if (containerCoordsY >= frame.top && containerCoordsY <= frame.bottom)
{
distanceY = 0;
}
else
{
distanceY = System.Math.Min(System.Math.Abs(frame.top - containerCoordsY), System.Math.Abs
(containerCoordsY - frame.bottom));
}
int distanceSq = distanceX * distanceX + distanceY * distanceY;
if ((distanceSq < mTouchPaddingScaledSq) && (distanceSq < closestChildDistanceSq))
{
closestChild = child;
closestChildDistanceSq = distanceSq;
}
}
}
return(closestChild);
}
protected internal override void onMeasure(int widthMeasureSpec, int heightMeasureSpec
)
{
base.onMeasure(widthMeasureSpec, heightMeasureSpec);
if (mActionBarView == null)
{
return;
}
android.widget.FrameLayout.LayoutParams lp = (android.widget.FrameLayout.LayoutParams
)mActionBarView.getLayoutParams();
int actionBarViewHeight = mActionBarView.isCollapsed() ? 0 : mActionBarView.getMeasuredHeight
() + lp.topMargin + lp.bottomMargin;
if (mTabContainer != null && mTabContainer.getVisibility() != GONE)
{
int mode = android.view.View.MeasureSpec.getMode(heightMeasureSpec);
if (mode == android.view.View.MeasureSpec.AT_MOST)
{
int maxHeight = android.view.View.MeasureSpec.getSize(heightMeasureSpec);
setMeasuredDimension(getMeasuredWidth(), System.Math.Min(actionBarViewHeight + mTabContainer
.getMeasuredHeight(), maxHeight));
}
}
}
public override bool dispatchPopulateAccessibilityEvent(android.view.accessibility.AccessibilityEvent
@event)
{
onPopulateAccessibilityEvent(@event);
// Dispatch only to the selected tab.
if (mSelectedTab != -1)
{
android.view.View tabView = getChildTabViewAt(mSelectedTab);
if (tabView != null && tabView.getVisibility() == VISIBLE)
{
return(tabView.dispatchPopulateAccessibilityEvent(@event));
}
}
return(false);
}
protected internal override void onLayout(bool changed, int l, int t, int r, int
b)
{
int count = getChildCount();
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() != GONE)
{
android.widget.AbsoluteLayout.LayoutParams lp = (android.widget.AbsoluteLayout.LayoutParams
)child.getLayoutParams();
int childLeft = mPaddingLeft + lp.x;
int childTop = mPaddingTop + lp.y;
child.layout(childLeft, childTop, childLeft + child.getMeasuredWidth(), childTop
+ child.getMeasuredHeight());
}
}
}
}
protected internal override void onMeasure(int widthMeasureSpec, int heightMeasureSpec
)
{
int count = getChildCount();
int maxHeight = 0;
int maxWidth = 0;
// Find out how big everyone wants to be
measureChildren(widthMeasureSpec, heightMeasureSpec);
{
// Find rightmost and bottom-most child
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() != GONE)
{
int childRight;
int childBottom;
android.widget.AbsoluteLayout.LayoutParams lp = (android.widget.AbsoluteLayout.LayoutParams
)child.getLayoutParams();
childRight = lp.x + child.getMeasuredWidth();
childBottom = lp.y + child.getMeasuredHeight();
maxWidth = System.Math.Max(maxWidth, childRight);
maxHeight = System.Math.Max(maxHeight, childBottom);
}
}
}
// Account for padding too
maxWidth += mPaddingLeft + mPaddingRight;
maxHeight += mPaddingTop + mPaddingBottom;
// Check against minimum height and width
maxHeight = System.Math.Max(maxHeight, getSuggestedMinimumHeight());
maxWidth = System.Math.Max(maxWidth, getSuggestedMinimumWidth());
setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, 0), resolveSizeAndState
(maxHeight, heightMeasureSpec, 0));
}
protected internal override void onLayout(bool changed, int l, int t, int r, int
b)
{
int x = getPaddingLeft();
int y = getPaddingTop();
int contentHeight = b - t - getPaddingTop() - getPaddingBottom();
if (mClose != null && mClose.getVisibility() != GONE)
{
android.view.ViewGroup.MarginLayoutParams lp = (android.view.ViewGroup.MarginLayoutParams
)mClose.getLayoutParams();
x += lp.leftMargin;
x += positionChild(mClose, x, y, contentHeight);
x += lp.rightMargin;
if (mAnimateInOnLayout)
{
mAnimationMode = ANIMATE_IN;
mCurrentAnimation = makeInAnimation();
mCurrentAnimation.start();
mAnimateInOnLayout = false;
}
}
if (mTitleLayout != null && mCustomView == null)
{
x += positionChild(mTitleLayout, x, y, contentHeight);
}
if (mCustomView != null)
{
x += positionChild(mCustomView, x, y, contentHeight);
}
x = r - l - getPaddingRight();
if (mMenuView != null)
{
x -= positionChildInverse(mMenuView, x, y, contentHeight);
}
}
protected internal override void onLayout(bool changed, int left, int top, int right
, int bottom)
{
if (!mFormatItems)
{
base.onLayout(changed, left, top, right, bottom);
return;
}
int childCount = getChildCount();
int midVertical = (top + bottom) / 2;
int dividerWidth = getDividerWidth();
int overflowWidth = 0;
int nonOverflowWidth = 0;
int nonOverflowCount = 0;
int widthRemaining = right - left - getPaddingRight() - getPaddingLeft();
bool hasOverflow = false;
{
for (int i = 0; i < childCount; i++)
{
android.view.View v = getChildAt(i);
if (v.getVisibility() == GONE)
{
continue;
}
[email protected] p = ([email protected]
.LayoutParams)v.getLayoutParams();
if (p.isOverflowButton)
{
overflowWidth = v.getMeasuredWidth();
if (hasDividerBeforeChildAt(i))
{
overflowWidth += dividerWidth;
}
int height = v.getMeasuredHeight();
int r = getWidth() - getPaddingRight() - p.rightMargin;
int l = r - overflowWidth;
int t = midVertical - (height / 2);
int b = t + height;
v.layout(l, t, r, b);
widthRemaining -= overflowWidth;
hasOverflow = true;
}
else
{
int size = v.getMeasuredWidth() + p.leftMargin + p.rightMargin;
nonOverflowWidth += size;
widthRemaining -= size;
if (hasDividerBeforeChildAt(i))
{
nonOverflowWidth += dividerWidth;
}
nonOverflowCount++;
}
}
}
if (childCount == 1 && !hasOverflow)
{
// Center a single child
android.view.View v = getChildAt(0);
int width = v.getMeasuredWidth();
int height = v.getMeasuredHeight();
int midHorizontal = (right - left) / 2;
int l = midHorizontal - width / 2;
int t = midVertical - height / 2;
v.layout(l, t, l + width, t + height);
return;
}
int spacerCount = nonOverflowCount - (hasOverflow ? 0 : 1);
int spacerSize = System.Math.Max(0, spacerCount > 0 ? widthRemaining / spacerCount
: 0);
int startLeft = getPaddingLeft();
{
for (int i_1 = 0; i_1 < childCount; i_1++)
{
android.view.View v = getChildAt(i_1);
[email protected] lp = ([email protected]
.LayoutParams)v.getLayoutParams();
if (v.getVisibility() == GONE || lp.isOverflowButton)
{
continue;
}
startLeft += lp.leftMargin;
int width = v.getMeasuredWidth();
int height = v.getMeasuredHeight();
int t = midVertical - height / 2;
v.layout(startLeft, t, startLeft + width, t + height);
startLeft += width + lp.rightMargin + spacerSize;
}
}
}
private void onMeasureExactFormat(int widthMeasureSpec, int heightMeasureSpec)
{
// We already know the width mode is EXACTLY if we're here.
int heightMode = android.view.View.MeasureSpec.getMode(heightMeasureSpec);
int widthSize = android.view.View.MeasureSpec.getSize(widthMeasureSpec);
int heightSize = android.view.View.MeasureSpec.getSize(heightMeasureSpec);
int widthPadding = getPaddingLeft() + getPaddingRight();
int heightPadding = getPaddingTop() + getPaddingBottom();
widthSize -= widthPadding;
// Divide the view into cells.
int cellCount = widthSize / mMinCellSize;
int cellSizeRemaining = widthSize % mMinCellSize;
if (cellCount == 0)
{
// Give up, nothing fits.
setMeasuredDimension(widthSize, 0);
return;
}
int cellSize = mMinCellSize + cellSizeRemaining / cellCount;
int cellsRemaining = cellCount;
int maxChildHeight = 0;
int maxCellsUsed = 0;
int expandableItemCount = 0;
int visibleItemCount = 0;
bool hasOverflow = false;
// This is used as a bitfield to locate the smallest items present. Assumes childCount < 64.
long smallestItemsAt = 0;
int childCount = getChildCount();
{
for (int i = 0; i < childCount; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() == GONE)
{
continue;
}
bool isGeneratedItem = child is [email protected];
visibleItemCount++;
if (isGeneratedItem)
{
// Reset padding for generated menu item views; it may change below
// and views are recycled.
child.setPadding(mGeneratedItemPadding, 0, mGeneratedItemPadding, 0);
}
[email protected] lp = ([email protected]
.LayoutParams)child.getLayoutParams();
lp.expanded = false;
lp.extraPixels = 0;
lp.cellsUsed = 0;
lp.expandable = false;
lp.leftMargin = 0;
lp.rightMargin = 0;
lp.preventEdgeOffset = isGeneratedItem && (([email protected]
)child).hasText();
// Overflow always gets 1 cell. No more, no less.
int cellsAvailable = lp.isOverflowButton ? 1 : cellsRemaining;
int cellsUsed = measureChildForCells(child, cellSize, cellsAvailable, heightMeasureSpec
, heightPadding);
maxCellsUsed = System.Math.Max(maxCellsUsed, cellsUsed);
if (lp.expandable)
{
expandableItemCount++;
}
if (lp.isOverflowButton)
{
hasOverflow = true;
}
cellsRemaining -= cellsUsed;
maxChildHeight = System.Math.Max(maxChildHeight, child.getMeasuredHeight());
if (cellsUsed == 1)
{
smallestItemsAt |= (1 << i);
}
}
}
// When we have overflow and a single expanded (text) item, we want to try centering it
// visually in the available space even though overflow consumes some of it.
bool centerSingleExpandedItem = hasOverflow && visibleItemCount == 2;
// Divide space for remaining cells if we have items that can expand.
// Try distributing whole leftover cells to smaller items first.
bool needsExpansion = false;
while (expandableItemCount > 0 && cellsRemaining > 0)
{
int minCells = int.MaxValue;
long minCellsAt = 0;
// Bit locations are indices of relevant child views
int minCellsItemCount = 0;
{
for (int i_1 = 0; i_1 < childCount; i_1++)
{
android.view.View child = getChildAt(i_1);
[email protected] lp = ([email protected]
.LayoutParams)child.getLayoutParams();
// Don't try to expand items that shouldn't.
if (!lp.expandable)
{
continue;
}
// Mark indices of children that can receive an extra cell.
if (lp.cellsUsed < minCells)
{
minCells = lp.cellsUsed;
minCellsAt = 1 << i_1;
minCellsItemCount = 1;
}
else
{
if (lp.cellsUsed == minCells)
{
minCellsAt |= 1 << i_1;
minCellsItemCount++;
}
}
}
}
// Items that get expanded will always be in the set of smallest items when we're done.
smallestItemsAt |= minCellsAt;
if (minCellsItemCount > cellsRemaining)
{
break;
}
// Couldn't expand anything evenly. Stop.
// We have enough cells, all minimum size items will be incremented.
minCells++;
{
for (int i_2 = 0; i_2 < childCount; i_2++)
{
android.view.View child = getChildAt(i_2);
[email protected] lp = ([email protected]
.LayoutParams)child.getLayoutParams();
if ((minCellsAt & (1 << i_2)) == 0)
{
// If this item is already at our small item count, mark it for later.
if (lp.cellsUsed == minCells)
{
smallestItemsAt |= 1 << i_2;
}
continue;
}
if (centerSingleExpandedItem && lp.preventEdgeOffset && cellsRemaining == 1)
{
// Add padding to this item such that it centers.
child.setPadding(mGeneratedItemPadding + cellSize, 0, mGeneratedItemPadding, 0);
}
lp.cellsUsed++;
lp.expanded = true;
cellsRemaining--;
}
}
needsExpansion = true;
}
// Divide any space left that wouldn't divide along cell boundaries
// evenly among the smallest items
bool singleItem = !hasOverflow && visibleItemCount == 1;
if (cellsRemaining > 0 && smallestItemsAt != 0 && (cellsRemaining < visibleItemCount
- 1 || singleItem || maxCellsUsed > 1))
{
float expandCount = Sharpen.Util.Long_GetBitCount(smallestItemsAt);
if (!singleItem)
{
// The items at the far edges may only expand by half in order to pin to either side.
if ((smallestItemsAt & 1) != 0)
{
[email protected] lp = ([email protected]
.LayoutParams)getChildAt(0).getLayoutParams();
if (!lp.preventEdgeOffset)
{
expandCount -= 0.5f;
}
}
if ((smallestItemsAt & (1 << (childCount - 1))) != 0)
{
[email protected] lp = (([email protected]
.LayoutParams)getChildAt(childCount - 1).getLayoutParams());
if (!lp.preventEdgeOffset)
{
expandCount -= 0.5f;
}
}
}
int extraPixels = expandCount > 0 ? (int)(cellsRemaining * cellSize / expandCount
) : 0;
{
for (int i_1 = 0; i_1 < childCount; i_1++)
{
if ((smallestItemsAt & (1 << i_1)) == 0)
{
continue;
}
android.view.View child = getChildAt(i_1);
[email protected] lp = ([email protected]
.LayoutParams)child.getLayoutParams();
if (child is [email protected])
{
// If this is one of our views, expand and measure at the larger size.
lp.extraPixels = extraPixels;
lp.expanded = true;
if (i_1 == 0 && !lp.preventEdgeOffset)
{
// First item gets part of its new padding pushed out of sight.
// The last item will get this implicitly from layout.
lp.leftMargin = -extraPixels / 2;
}
needsExpansion = true;
}
else
{
if (lp.isOverflowButton)
{
lp.extraPixels = extraPixels;
lp.expanded = true;
lp.rightMargin = -extraPixels / 2;
needsExpansion = true;
}
else
{
// If we don't know what it is, give it some margins instead
// and let it center within its space. We still want to pin
// against the edges.
if (i_1 != 0)
{
lp.leftMargin = extraPixels / 2;
}
if (i_1 != childCount - 1)
{
lp.rightMargin = extraPixels / 2;
}
}
}
}
}
cellsRemaining = 0;
}
// Remeasure any items that have had extra space allocated to them.
if (needsExpansion)
{
int heightSpec = android.view.View.MeasureSpec.makeMeasureSpec(heightSize - heightPadding
, heightMode);
{
for (int i_1 = 0; i_1 < childCount; i_1++)
{
android.view.View child = getChildAt(i_1);
[email protected] lp = ([email protected]
.LayoutParams)child.getLayoutParams();
if (!lp.expanded)
{
continue;
}
int width = lp.cellsUsed * cellSize + lp.extraPixels;
child.measure(android.view.View.MeasureSpec.makeMeasureSpec(width, android.view.View
.MeasureSpec.EXACTLY), heightSpec);
}
}
}
if (heightMode != android.view.View.MeasureSpec.EXACTLY)
{
heightSize = maxChildHeight;
}
setMeasuredDimension(widthSize, heightSize);
mMeasuredExtraWidth = cellsRemaining * cellSize;
}
/// <summary><p>Finds the largest cell in each column.</summary>
/// <remarks>
/// <p>Finds the largest cell in each column. For each column, the width of
/// the largest cell is applied to all the other cells.</p>
/// </remarks>
/// <param name="widthMeasureSpec">the measure constraint imposed by our parent</param>
private void findLargestCells(int widthMeasureSpec)
{
bool firstRow = true;
// find the maximum width for each column
// the total number of columns is dynamically changed if we find
// wider rows as we go through the children
// the array is reused for each layout operation; the array can grow
// but never shrinks. Unused extra cells in the array are just ignored
// this behavior avoids to unnecessary grow the array after the first
// layout operation
int count = getChildCount();
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() == GONE)
{
continue;
}
if (child is android.widget.TableRow)
{
android.widget.TableRow row = (android.widget.TableRow)child;
// forces the row's height
android.view.ViewGroup.LayoutParams layoutParams = row.getLayoutParams();
layoutParams.height = android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
int[] widths = row.getColumnsWidths(widthMeasureSpec);
int newLength = widths.Length;
// this is the first row, we just need to copy the values
if (firstRow)
{
if (mMaxWidths == null || mMaxWidths.Length != newLength)
{
mMaxWidths = new int[newLength];
}
System.Array.Copy(widths, 0, mMaxWidths, 0, newLength);
firstRow = false;
}
else
{
int length = mMaxWidths.Length;
int difference = newLength - length;
// the current row is wider than the previous rows, so
// we just grow the array and copy the values
if (difference > 0)
{
int[] oldMaxWidths = mMaxWidths;
mMaxWidths = new int[newLength];
System.Array.Copy(oldMaxWidths, 0, mMaxWidths, 0, oldMaxWidths.Length);
System.Array.Copy(widths, oldMaxWidths.Length, mMaxWidths, oldMaxWidths.Length, difference
);
}
// the row is narrower or of the same width as the previous
// rows, so we find the maximum width for each column
// if the row is narrower than the previous ones,
// difference will be negative
int[] maxWidths = mMaxWidths;
length = System.Math.Min(length, newLength);
{
for (int j = 0; j < length; j++)
{
maxWidths[j] = System.Math.Max(maxWidths[j], widths[j]);
}
}
}
}
}
}
}
protected internal override void onLayout(bool changed, int left, int top, int right
, int bottom)
{
int count = getChildCount();
int parentLeft = getPaddingLeftWithForeground();
int parentRight = right - left - getPaddingRightWithForeground();
int parentTop = getPaddingTopWithForeground();
int parentBottom = bottom - top - getPaddingBottomWithForeground();
mForegroundBoundsChanged = true;
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() != GONE)
{
android.widget.FrameLayout.LayoutParams lp = (android.widget.FrameLayout.LayoutParams
)child.getLayoutParams();
int width = child.getMeasuredWidth();
int height = child.getMeasuredHeight();
int childLeft;
int childTop;
int gravity = lp.gravity;
if (gravity == -1)
{
gravity = DEFAULT_CHILD_GRAVITY;
}
int layoutDirection = getResolvedLayoutDirection();
int absoluteGravity = android.view.Gravity.getAbsoluteGravity(gravity, layoutDirection
);
int verticalGravity = gravity & android.view.Gravity.VERTICAL_GRAVITY_MASK;
switch (absoluteGravity & android.view.Gravity.HORIZONTAL_GRAVITY_MASK)
{
case android.view.Gravity.LEFT:
{
childLeft = parentLeft + lp.leftMargin;
break;
}
case android.view.Gravity.CENTER_HORIZONTAL:
{
childLeft = parentLeft + (parentRight - parentLeft - width) / 2 + lp.leftMargin -
lp.rightMargin;
break;
}
case android.view.Gravity.RIGHT:
{
childLeft = parentRight - width - lp.rightMargin;
break;
}
default:
{
childLeft = parentLeft + lp.leftMargin;
break;
}
}
switch (verticalGravity)
{
case android.view.Gravity.TOP:
{
childTop = parentTop + lp.topMargin;
break;
}
case android.view.Gravity.CENTER_VERTICAL:
{
childTop = parentTop + (parentBottom - parentTop - height) / 2 + lp.topMargin - lp
.bottomMargin;
break;
}
case android.view.Gravity.BOTTOM:
{
childTop = parentBottom - height - lp.bottomMargin;
break;
}
default:
{
childTop = parentTop + lp.topMargin;
break;
}
}
child.layout(childLeft, childTop, childLeft + width, childTop + height);
}
}
}
}
protected internal override void onMeasure(int widthMeasureSpec, int heightMeasureSpec
)
{
int count = getChildCount();
bool measureMatchParentChildren = android.view.View.MeasureSpec.getMode(widthMeasureSpec
) != android.view.View.MeasureSpec.EXACTLY || android.view.View.MeasureSpec.getMode
(heightMeasureSpec) != android.view.View.MeasureSpec.EXACTLY;
mMatchParentChildren.clear();
int maxHeight = 0;
int maxWidth = 0;
int childState = 0;
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (mMeasureAllChildren || child.getVisibility() != GONE)
{
measureChildWithMargins(child, widthMeasureSpec, 0, heightMeasureSpec, 0);
android.widget.FrameLayout.LayoutParams lp = (android.widget.FrameLayout.LayoutParams
)child.getLayoutParams();
maxWidth = System.Math.Max(maxWidth, child.getMeasuredWidth() + lp.leftMargin + lp
.rightMargin);
maxHeight = System.Math.Max(maxHeight, child.getMeasuredHeight() + lp.topMargin +
lp.bottomMargin);
childState = combineMeasuredStates(childState, child.getMeasuredState());
if (measureMatchParentChildren)
{
if (lp.width == android.view.ViewGroup.LayoutParams.MATCH_PARENT || lp.height ==
android.view.ViewGroup.LayoutParams.MATCH_PARENT)
{
mMatchParentChildren.add(child);
}
}
}
}
}
// Account for padding too
maxWidth += getPaddingLeftWithForeground() + getPaddingRightWithForeground();
maxHeight += getPaddingTopWithForeground() + getPaddingBottomWithForeground();
// Check against our minimum height and width
maxHeight = System.Math.Max(maxHeight, getSuggestedMinimumHeight());
maxWidth = System.Math.Max(maxWidth, getSuggestedMinimumWidth());
// Check against our foreground's minimum height and width
android.graphics.drawable.Drawable drawable = getForeground();
if (drawable != null)
{
maxHeight = System.Math.Max(maxHeight, drawable.getMinimumHeight());
maxWidth = System.Math.Max(maxWidth, drawable.getMinimumWidth());
}
setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, childState),
resolveSizeAndState(maxHeight, heightMeasureSpec, childState << MEASURED_HEIGHT_STATE_SHIFT
));
count = mMatchParentChildren.size();
if (count > 1)
{
{
for (int i_1 = 0; i_1 < count; i_1++)
{
android.view.View child = mMatchParentChildren.get(i_1);
android.view.ViewGroup.MarginLayoutParams lp = (android.view.ViewGroup.MarginLayoutParams
)child.getLayoutParams();
int childWidthMeasureSpec;
int childHeightMeasureSpec;
if (lp.width == android.view.ViewGroup.LayoutParams.MATCH_PARENT)
{
childWidthMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(getMeasuredWidth
() - getPaddingLeftWithForeground() - getPaddingRightWithForeground() - lp.leftMargin
- lp.rightMargin, android.view.View.MeasureSpec.EXACTLY);
}
else
{
childWidthMeasureSpec = getChildMeasureSpec(widthMeasureSpec, getPaddingLeftWithForeground
() + getPaddingRightWithForeground() + lp.leftMargin + lp.rightMargin, lp.width);
}
if (lp.height == android.view.ViewGroup.LayoutParams.MATCH_PARENT)
{
childHeightMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(getMeasuredHeight
() - getPaddingTopWithForeground() - getPaddingBottomWithForeground() - lp.topMargin
- lp.bottomMargin, android.view.View.MeasureSpec.EXACTLY);
}
else
{
childHeightMeasureSpec = getChildMeasureSpec(heightMeasureSpec, getPaddingTopWithForeground
() + getPaddingBottomWithForeground() + lp.topMargin + lp.bottomMargin, lp.height
);
}
child.measure(childWidthMeasureSpec, childHeightMeasureSpec);
}
}
}
}
internal override void measureHorizontal(int widthMeasureSpec, int heightMeasureSpec
)
{
if (android.view.View.MeasureSpec.getMode(widthMeasureSpec) == android.view.View.
MeasureSpec.UNSPECIFIED)
{
base.measureHorizontal(widthMeasureSpec, heightMeasureSpec);
return;
}
// First, measure with no constraint
int unspecifiedWidth = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
mImposedTabsHeight = -1;
base.measureHorizontal(unspecifiedWidth, heightMeasureSpec);
int extraWidth = getMeasuredWidth() - android.view.View.MeasureSpec.getSize(widthMeasureSpec
);
if (extraWidth > 0)
{
int count = getChildCount();
int childCount = 0;
{
for (int i = 0; i < count; i++)
{
android.view.View child = getChildAt(i);
if (child.getVisibility() == GONE)
{
continue;
}
childCount++;
}
}
if (childCount > 0)
{
if (mImposedTabWidths == null || mImposedTabWidths.Length != count)
{
mImposedTabWidths = new int[count];
}
{
for (int i_1 = 0; i_1 < count; i_1++)
{
android.view.View child = getChildAt(i_1);
if (child.getVisibility() == GONE)
{
continue;
}
int childWidth = child.getMeasuredWidth();
int delta = extraWidth / childCount;
int newWidth = System.Math.Max(0, childWidth - delta);
mImposedTabWidths[i_1] = newWidth;
// Make sure the extra width is evenly distributed, no int division remainder
extraWidth -= childWidth - newWidth;
// delta may have been clamped
childCount--;
mImposedTabsHeight = System.Math.Max(mImposedTabsHeight, child.getMeasuredHeight(
));
}
}
}
}
// Measure again, this time with imposed tab widths and respecting initial spec request
base.measureHorizontal(widthMeasureSpec, heightMeasureSpec);
}
