diff options
Diffstat (limited to 'actionbarsherlock/src/com/actionbarsherlock/internal/view/menu/ActionMenuView.java')
| -rw-r--r-- | actionbarsherlock/src/com/actionbarsherlock/internal/view/menu/ActionMenuView.java | 572 |
1 files changed, 0 insertions, 572 deletions
diff --git a/actionbarsherlock/src/com/actionbarsherlock/internal/view/menu/ActionMenuView.java b/actionbarsherlock/src/com/actionbarsherlock/internal/view/menu/ActionMenuView.java deleted file mode 100644 index e090677a1..000000000 --- a/actionbarsherlock/src/com/actionbarsherlock/internal/view/menu/ActionMenuView.java +++ /dev/null @@ -1,572 +0,0 @@ -/* - * Copyright (C) 2010 The Android Open Source Project - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -package com.actionbarsherlock.internal.view.menu; - -import android.content.Context; -import android.content.res.Configuration; -import android.graphics.Canvas; -import android.os.Build; -import android.util.AttributeSet; -import android.view.Gravity; -import android.view.View; -import android.view.ViewGroup; -import android.view.accessibility.AccessibilityEvent; -import android.widget.LinearLayout; -import com.actionbarsherlock.internal.widget.IcsLinearLayout; - -/** - * @hide - */ -public class ActionMenuView extends IcsLinearLayout implements MenuBuilder.ItemInvoker, MenuView { - //UNUSED private static final String TAG = "ActionMenuView"; - private static final boolean IS_FROYO = Build.VERSION.SDK_INT >= Build.VERSION_CODES.FROYO; - - static final int MIN_CELL_SIZE = 56; // dips - static final int GENERATED_ITEM_PADDING = 4; // dips - - private MenuBuilder mMenu; - - private boolean mReserveOverflow; - private ActionMenuPresenter mPresenter; - private boolean mFormatItems; - private int mFormatItemsWidth; - private int mMinCellSize; - private int mGeneratedItemPadding; - //UNUSED private int mMeasuredExtraWidth; - - private boolean mFirst = true; - - public ActionMenuView(Context context) { - this(context, null); - } - - public ActionMenuView(Context context, AttributeSet attrs) { - super(context, attrs); - setBaselineAligned(false); - final float density = context.getResources().getDisplayMetrics().density; - mMinCellSize = (int) (MIN_CELL_SIZE * density); - mGeneratedItemPadding = (int) (GENERATED_ITEM_PADDING * density); - } - - public void setPresenter(ActionMenuPresenter presenter) { - mPresenter = presenter; - } - - public boolean isExpandedFormat() { - return mFormatItems; - } - - @Override - public void onConfigurationChanged(Configuration newConfig) { - if (IS_FROYO) { - super.onConfigurationChanged(newConfig); - } - mPresenter.updateMenuView(false); - - if (mPresenter != null && mPresenter.isOverflowMenuShowing()) { - mPresenter.hideOverflowMenu(); - mPresenter.showOverflowMenu(); - } - } - - @Override - protected void onDraw(Canvas canvas) { - //Need to trigger a relayout since we may have been added extremely - //late in the initial rendering (e.g., when contained in a ViewPager). - //See: https://github.com/JakeWharton/ActionBarSherlock/issues/272 - if (!IS_FROYO && mFirst) { - mFirst = false; - requestLayout(); - return; - } - super.onDraw(canvas); - } - - @Override - protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { - // If we've been given an exact size to match, apply special formatting during layout. - final boolean wasFormatted = mFormatItems; - mFormatItems = MeasureSpec.getMode(widthMeasureSpec) == MeasureSpec.EXACTLY; - - if (wasFormatted != mFormatItems) { - mFormatItemsWidth = 0; // Reset this when switching modes - } - - // Special formatting can change whether items can fit as action buttons. - // Kick the menu and update presenters when this changes. - final int widthSize = MeasureSpec.getMode(widthMeasureSpec); - if (mFormatItems && mMenu != null && widthSize != mFormatItemsWidth) { - mFormatItemsWidth = widthSize; - mMenu.onItemsChanged(true); - } - - if (mFormatItems) { - onMeasureExactFormat(widthMeasureSpec, heightMeasureSpec); - } else { - super.onMeasure(widthMeasureSpec, heightMeasureSpec); - } - } - - private void onMeasureExactFormat(int widthMeasureSpec, int heightMeasureSpec) { - // We already know the width mode is EXACTLY if we're here. - final int heightMode = MeasureSpec.getMode(heightMeasureSpec); - int widthSize = MeasureSpec.getSize(widthMeasureSpec); - int heightSize = MeasureSpec.getSize(heightMeasureSpec); - - final int widthPadding = getPaddingLeft() + getPaddingRight(); - final int heightPadding = getPaddingTop() + getPaddingBottom(); - - widthSize -= widthPadding; - - // Divide the view into cells. - final int cellCount = widthSize / mMinCellSize; - final int cellSizeRemaining = widthSize % mMinCellSize; - - if (cellCount == 0) { - // Give up, nothing fits. - setMeasuredDimension(widthSize, 0); - return; - } - - final int cellSize = mMinCellSize + cellSizeRemaining / cellCount; - - int cellsRemaining = cellCount; - int maxChildHeight = 0; - int maxCellsUsed = 0; - int expandableItemCount = 0; - int visibleItemCount = 0; - boolean hasOverflow = false; - - // This is used as a bitfield to locate the smallest items present. Assumes childCount < 64. - long smallestItemsAt = 0; - - final int childCount = getChildCount(); - for (int i = 0; i < childCount; i++) { - final View child = getChildAt(i); - if (child.getVisibility() == GONE) continue; - - final boolean isGeneratedItem = child instanceof ActionMenuItemView; - visibleItemCount++; - - if (isGeneratedItem) { - // Reset padding for generated menu item views; it may change below - // and views are recycled. - child.setPadding(mGeneratedItemPadding, 0, mGeneratedItemPadding, 0); - } - - final LayoutParams lp = (LayoutParams) child.getLayoutParams(); - lp.expanded = false; - lp.extraPixels = 0; - lp.cellsUsed = 0; - lp.expandable = false; - lp.leftMargin = 0; - lp.rightMargin = 0; - lp.preventEdgeOffset = isGeneratedItem && ((ActionMenuItemView) child).hasText(); - - // Overflow always gets 1 cell. No more, no less. - final int cellsAvailable = lp.isOverflowButton ? 1 : cellsRemaining; - - final int cellsUsed = measureChildForCells(child, cellSize, cellsAvailable, - heightMeasureSpec, heightPadding); - - maxCellsUsed = Math.max(maxCellsUsed, cellsUsed); - if (lp.expandable) expandableItemCount++; - if (lp.isOverflowButton) hasOverflow = true; - - cellsRemaining -= cellsUsed; - maxChildHeight = 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. - final boolean 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. - - boolean needsExpansion = false; - while (expandableItemCount > 0 && cellsRemaining > 0) { - int minCells = Integer.MAX_VALUE; - long minCellsAt = 0; // Bit locations are indices of relevant child views - int minCellsItemCount = 0; - for (int i = 0; i < childCount; i++) { - final View child = getChildAt(i); - final LayoutParams lp = (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; - minCellsItemCount = 1; - } else if (lp.cellsUsed == minCells) { - minCellsAt |= 1 << i; - 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 = 0; i < childCount; i++) { - final View child = getChildAt(i); - final LayoutParams lp = (LayoutParams) child.getLayoutParams(); - if ((minCellsAt & (1 << i)) == 0) { - // If this item is already at our small item count, mark it for later. - if (lp.cellsUsed == minCells) smallestItemsAt |= 1 << i; - 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 - - final boolean singleItem = !hasOverflow && visibleItemCount == 1; - if (cellsRemaining > 0 && smallestItemsAt != 0 && - (cellsRemaining < visibleItemCount - 1 || singleItem || maxCellsUsed > 1)) { - float expandCount = Long.bitCount(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) { - LayoutParams lp = (LayoutParams) getChildAt(0).getLayoutParams(); - if (!lp.preventEdgeOffset) expandCount -= 0.5f; - } - if ((smallestItemsAt & (1 << (childCount - 1))) != 0) { - LayoutParams lp = ((LayoutParams) getChildAt(childCount - 1).getLayoutParams()); - if (!lp.preventEdgeOffset) expandCount -= 0.5f; - } - } - - final int extraPixels = expandCount > 0 ? - (int) (cellsRemaining * cellSize / expandCount) : 0; - - for (int i = 0; i < childCount; i++) { - if ((smallestItemsAt & (1 << i)) == 0) continue; - - final View child = getChildAt(i); - final LayoutParams lp = (LayoutParams) child.getLayoutParams(); - if (child instanceof ActionMenuItemView) { - // If this is one of our views, expand and measure at the larger size. - lp.extraPixels = extraPixels; - lp.expanded = true; - if (i == 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 != 0) { - lp.leftMargin = extraPixels / 2; - } - if (i != childCount - 1) { - lp.rightMargin = extraPixels / 2; - } - } - } - - cellsRemaining = 0; - } - - // Remeasure any items that have had extra space allocated to them. - if (needsExpansion) { - int heightSpec = MeasureSpec.makeMeasureSpec(heightSize - heightPadding, heightMode); - for (int i = 0; i < childCount; i++) { - final View child = getChildAt(i); - final LayoutParams lp = (LayoutParams) child.getLayoutParams(); - - if (!lp.expanded) continue; - - final int width = lp.cellsUsed * cellSize + lp.extraPixels; - child.measure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), heightSpec); - } - } - - if (heightMode != MeasureSpec.EXACTLY) { - heightSize = maxChildHeight; - } - - setMeasuredDimension(widthSize, heightSize); - //UNUSED mMeasuredExtraWidth = cellsRemaining * cellSize; - } - - /** - * Measure a child view to fit within cell-based formatting. The child's width - * will be measured to a whole multiple of cellSize. - * - * <p>Sets the expandable and cellsUsed fields of LayoutParams. - * - * @param child Child to measure - * @param cellSize Size of one cell - * @param cellsRemaining Number of cells remaining that this view can expand to fill - * @param parentHeightMeasureSpec MeasureSpec used by the parent view - * @param parentHeightPadding Padding present in the parent view - * @return Number of cells this child was measured to occupy - */ - static int measureChildForCells(View child, int cellSize, int cellsRemaining, - int parentHeightMeasureSpec, int parentHeightPadding) { - final LayoutParams lp = (LayoutParams) child.getLayoutParams(); - - final int childHeightSize = MeasureSpec.getSize(parentHeightMeasureSpec) - - parentHeightPadding; - final int childHeightMode = MeasureSpec.getMode(parentHeightMeasureSpec); - final int childHeightSpec = MeasureSpec.makeMeasureSpec(childHeightSize, childHeightMode); - - int cellsUsed = 0; - if (cellsRemaining > 0) { - final int childWidthSpec = MeasureSpec.makeMeasureSpec( - cellSize * cellsRemaining, MeasureSpec.AT_MOST); - child.measure(childWidthSpec, childHeightSpec); - - final int measuredWidth = child.getMeasuredWidth(); - cellsUsed = measuredWidth / cellSize; - if (measuredWidth % cellSize != 0) cellsUsed++; - } - - final ActionMenuItemView itemView = child instanceof ActionMenuItemView ? - (ActionMenuItemView) child : null; - final boolean expandable = !lp.isOverflowButton && itemView != null && itemView.hasText(); - lp.expandable = expandable; - - lp.cellsUsed = cellsUsed; - final int targetWidth = cellsUsed * cellSize; - child.measure(MeasureSpec.makeMeasureSpec(targetWidth, MeasureSpec.EXACTLY), - childHeightSpec); - return cellsUsed; - } - - @Override - protected void onLayout(boolean changed, int left, int top, int right, int bottom) { - if (!mFormatItems) { - super.onLayout(changed, left, top, right, bottom); - return; - } - - final int childCount = getChildCount(); - final int midVertical = (top + bottom) / 2; - final int dividerWidth = 0;//getDividerWidth(); - int overflowWidth = 0; - //UNUSED int nonOverflowWidth = 0; - int nonOverflowCount = 0; - int widthRemaining = right - left - getPaddingRight() - getPaddingLeft(); - boolean hasOverflow = false; - for (int i = 0; i < childCount; i++) { - final View v = getChildAt(i); - if (v.getVisibility() == GONE) { - continue; - } - - LayoutParams p = (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 { - final int size = v.getMeasuredWidth() + p.leftMargin + p.rightMargin; - //UNUSED nonOverflowWidth += size; - widthRemaining -= size; - //if (hasDividerBeforeChildAt(i)) { - //UNUSED nonOverflowWidth += dividerWidth; - //} - nonOverflowCount++; - } - } - - if (childCount == 1 && !hasOverflow) { - // Center a single child - final View v = getChildAt(0); - final int width = v.getMeasuredWidth(); - final int height = v.getMeasuredHeight(); - final int midHorizontal = (right - left) / 2; - final int l = midHorizontal - width / 2; - final int t = midVertical - height / 2; - v.layout(l, t, l + width, t + height); - return; - } - - final int spacerCount = nonOverflowCount - (hasOverflow ? 0 : 1); - final int spacerSize = Math.max(0, spacerCount > 0 ? widthRemaining / spacerCount : 0); - - int startLeft = getPaddingLeft(); - for (int i = 0; i < childCount; i++) { - final View v = getChildAt(i); - final LayoutParams lp = (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; - } - } - - @Override - public void onDetachedFromWindow() { - super.onDetachedFromWindow(); - mPresenter.dismissPopupMenus(); - } - - public boolean isOverflowReserved() { - return mReserveOverflow; - } - - public void setOverflowReserved(boolean reserveOverflow) { - mReserveOverflow = reserveOverflow; - } - - @Override - protected LayoutParams generateDefaultLayoutParams() { - LayoutParams params = new LayoutParams(LayoutParams.WRAP_CONTENT, - LayoutParams.WRAP_CONTENT); - params.gravity = Gravity.CENTER_VERTICAL; - return params; - } - - @Override - public LayoutParams generateLayoutParams(AttributeSet attrs) { - return new LayoutParams(getContext(), attrs); - } - - @Override - protected LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { - if (p instanceof LayoutParams) { - LayoutParams result = new LayoutParams((LayoutParams) p); - if (result.gravity <= Gravity.NO_GRAVITY) { - result.gravity = Gravity.CENTER_VERTICAL; - } - return result; - } - return generateDefaultLayoutParams(); - } - - @Override - protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { - return p != null && p instanceof LayoutParams; - } - - public LayoutParams generateOverflowButtonLayoutParams() { - LayoutParams result = generateDefaultLayoutParams(); - result.isOverflowButton = true; - return result; - } - - public boolean invokeItem(MenuItemImpl item) { - return mMenu.performItemAction(item, 0); - } - - public int getWindowAnimations() { - return 0; - } - - public void initialize(MenuBuilder menu) { - mMenu = menu; - } - - //@Override - protected boolean hasDividerBeforeChildAt(int childIndex) { - final View childBefore = getChildAt(childIndex - 1); - final View child = getChildAt(childIndex); - boolean result = false; - if (childIndex < getChildCount() && childBefore instanceof ActionMenuChildView) { - result |= ((ActionMenuChildView) childBefore).needsDividerAfter(); - } - if (childIndex > 0 && child instanceof ActionMenuChildView) { - result |= ((ActionMenuChildView) child).needsDividerBefore(); - } - return result; - } - - public boolean dispatchPopulateAccessibilityEvent(AccessibilityEvent event) { - return false; - } - - public interface ActionMenuChildView { - public boolean needsDividerBefore(); - public boolean needsDividerAfter(); - } - - public static class LayoutParams extends LinearLayout.LayoutParams { - public boolean isOverflowButton; - public int cellsUsed; - public int extraPixels; - public boolean expandable; - public boolean preventEdgeOffset; - - public boolean expanded; - - public LayoutParams(Context c, AttributeSet attrs) { - super(c, attrs); - } - - public LayoutParams(LayoutParams other) { - super((LinearLayout.LayoutParams) other); - isOverflowButton = other.isOverflowButton; - } - - public LayoutParams(int width, int height) { - super(width, height); - isOverflowButton = false; - } - - public LayoutParams(int width, int height, boolean isOverflowButton) { - super(width, height); - this.isOverflowButton = isOverflowButton; - } - } -} |