--- /dev/null
+package com.actionbarsherlock.internal.widget;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.drawable.Drawable;
+import android.util.AttributeSet;
+import android.view.View;
+import com.actionbarsherlock.internal.nineoldandroids.widget.NineLinearLayout;
+
+/**
+ * A simple extension of a regular linear layout that supports the divider API
+ * of Android 4.0+. The dividers are added adjacent to the children by changing
+ * their layout params. If you need to rely on the margins which fall in the
+ * same orientation as the layout you should wrap the child in a simple
+ * {@link android.widget.FrameLayout} so it can receive the margin.
+ */
+public class IcsLinearLayout extends NineLinearLayout {
+ private static final int[] LinearLayout = new int[] {
+ /* 0 */ android.R.attr.divider,
+ /* 1 */ android.R.attr.showDividers,
+ /* 2 */ android.R.attr.dividerPadding,
+ };
+ private static final int LinearLayout_divider = 0;
+ private static final int LinearLayout_showDividers = 1;
+ private static final int LinearLayout_dividerPadding = 2;
+
+ /**
+ * Don't show any dividers.
+ */
+ public static final int SHOW_DIVIDER_NONE = 0;
+ /**
+ * Show a divider at the beginning of the group.
+ */
+ public static final int SHOW_DIVIDER_BEGINNING = 1;
+ /**
+ * Show dividers between each item in the group.
+ */
+ public static final int SHOW_DIVIDER_MIDDLE = 2;
+ /**
+ * Show a divider at the end of the group.
+ */
+ public static final int SHOW_DIVIDER_END = 4;
+
+
+ private Drawable mDivider;
+ private int mDividerWidth;
+ private int mDividerHeight;
+ private int mShowDividers;
+ private int mDividerPadding;
+
+
+ public IcsLinearLayout(Context context, AttributeSet attrs) {
+ super(context, attrs);
+
+ TypedArray a = context.obtainStyledAttributes(attrs, /*com.android.internal.R.styleable.*/LinearLayout);
+
+ setDividerDrawable(a.getDrawable(/*com.android.internal.R.styleable.*/LinearLayout_divider));
+ mShowDividers = a.getInt(/*com.android.internal.R.styleable.*/LinearLayout_showDividers, SHOW_DIVIDER_NONE);
+ mDividerPadding = a.getDimensionPixelSize(/*com.android.internal.R.styleable.*/LinearLayout_dividerPadding, 0);
+
+ a.recycle();
+ }
+
+ /**
+ * Set how dividers should be shown between items in this layout
+ *
+ * @param showDividers One or more of {@link #SHOW_DIVIDER_BEGINNING},
+ * {@link #SHOW_DIVIDER_MIDDLE}, or {@link #SHOW_DIVIDER_END},
+ * or {@link #SHOW_DIVIDER_NONE} to show no dividers.
+ */
+ public void setShowDividers(int showDividers) {
+ if (showDividers != mShowDividers) {
+ requestLayout();
+ invalidate(); //XXX This is required if you are toggling a divider off
+ }
+ mShowDividers = showDividers;
+ }
+
+ /**
+ * @return A flag set indicating how dividers should be shown around items.
+ * @see #setShowDividers(int)
+ */
+ public int getShowDividers() {
+ return mShowDividers;
+ }
+
+ /**
+ * Set a drawable to be used as a divider between items.
+ * @param divider Drawable that will divide each item.
+ * @see #setShowDividers(int)
+ */
+ public void setDividerDrawable(Drawable divider) {
+ if (divider == mDivider) {
+ return;
+ }
+ mDivider = divider;
+ if (divider != null) {
+ mDividerWidth = divider.getIntrinsicWidth();
+ mDividerHeight = divider.getIntrinsicHeight();
+ } else {
+ mDividerWidth = 0;
+ mDividerHeight = 0;
+ }
+ setWillNotDraw(divider == null);
+ requestLayout();
+ }
+
+ /**
+ * Set padding displayed on both ends of dividers.
+ *
+ * @param padding Padding value in pixels that will be applied to each end
+ *
+ * @see #setShowDividers(int)
+ * @see #setDividerDrawable(Drawable)
+ * @see #getDividerPadding()
+ */
+ public void setDividerPadding(int padding) {
+ mDividerPadding = padding;
+ }
+
+ /**
+ * Get the padding size used to inset dividers in pixels
+ *
+ * @see #setShowDividers(int)
+ * @see #setDividerDrawable(Drawable)
+ * @see #setDividerPadding(int)
+ */
+ public int getDividerPadding() {
+ return mDividerPadding;
+ }
+
+ /**
+ * Get the width of the current divider drawable.
+ *
+ * @hide Used internally by framework.
+ */
+ public int getDividerWidth() {
+ return mDividerWidth;
+ }
+
+ @Override
+ protected void measureChildWithMargins(View child, int parentWidthMeasureSpec, int widthUsed, int parentHeightMeasureSpec, int heightUsed) {
+ final int index = indexOfChild(child);
+ final int orientation = getOrientation();
+ final LayoutParams params = (LayoutParams) child.getLayoutParams();
+ if (hasDividerBeforeChildAt(index)) {
+ if (orientation == VERTICAL) {
+ //Account for the divider by pushing everything up
+ params.topMargin = mDividerHeight;
+ } else {
+ //Account for the divider by pushing everything left
+ params.leftMargin = mDividerWidth;
+ }
+ }
+
+ final int count = getChildCount();
+ if (index == count - 1) {
+ if (hasDividerBeforeChildAt(count)) {
+ if (orientation == VERTICAL) {
+ params.bottomMargin = mDividerHeight;
+ } else {
+ params.rightMargin = mDividerWidth;
+ }
+ }
+ }
+ super.measureChildWithMargins(child, parentWidthMeasureSpec, widthUsed, parentHeightMeasureSpec, heightUsed);
+ }
+
+ @Override
+ protected void onDraw(Canvas canvas) {
+ if (mDivider != null) {
+ if (getOrientation() == VERTICAL) {
+ drawDividersVertical(canvas);
+ } else {
+ drawDividersHorizontal(canvas);
+ }
+ }
+ super.onDraw(canvas);
+ }
+
+ void drawDividersVertical(Canvas canvas) {
+ final int count = getChildCount();
+ for (int i = 0; i < count; i++) {
+ final View child = getChildAt(i);
+
+ if (child != null && child.getVisibility() != GONE) {
+ if (hasDividerBeforeChildAt(i)) {
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ final int top = child.getTop() - lp.topMargin/* - mDividerHeight*/;
+ drawHorizontalDivider(canvas, top);
+ }
+ }
+ }
+
+ if (hasDividerBeforeChildAt(count)) {
+ final View child = getChildAt(count - 1);
+ int bottom = 0;
+ if (child == null) {
+ bottom = getHeight() - getPaddingBottom() - mDividerHeight;
+ } else {
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ bottom = child.getBottom()/* + lp.bottomMargin*/;
+ }
+ drawHorizontalDivider(canvas, bottom);
+ }
+ }
+
+ void drawDividersHorizontal(Canvas canvas) {
+ final int count = getChildCount();
+ for (int i = 0; i < count; i++) {
+ final View child = getChildAt(i);
+
+ if (child != null && child.getVisibility() != GONE) {
+ if (hasDividerBeforeChildAt(i)) {
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ final int left = child.getLeft() - lp.leftMargin/* - mDividerWidth*/;
+ drawVerticalDivider(canvas, left);
+ }
+ }
+ }
+
+ if (hasDividerBeforeChildAt(count)) {
+ final View child = getChildAt(count - 1);
+ int right = 0;
+ if (child == null) {
+ right = getWidth() - getPaddingRight() - mDividerWidth;
+ } else {
+ final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+ right = child.getRight()/* + lp.rightMargin*/;
+ }
+ drawVerticalDivider(canvas, right);
+ }
+ }
+
+ void drawHorizontalDivider(Canvas canvas, int top) {
+ mDivider.setBounds(getPaddingLeft() + mDividerPadding, top,
+ getWidth() - getPaddingRight() - mDividerPadding, top + mDividerHeight);
+ mDivider.draw(canvas);
+ }
+
+ void drawVerticalDivider(Canvas canvas, int left) {
+ mDivider.setBounds(left, getPaddingTop() + mDividerPadding,
+ left + mDividerWidth, getHeight() - getPaddingBottom() - mDividerPadding);
+ mDivider.draw(canvas);
+ }
+
+ /**
+ * Determines where to position dividers between children.
+ *
+ * @param childIndex Index of child to check for preceding divider
+ * @return true if there should be a divider before the child at childIndex
+ * @hide Pending API consideration. Currently only used internally by the system.
+ */
+ protected boolean hasDividerBeforeChildAt(int childIndex) {
+ if (childIndex == 0) {
+ return (mShowDividers & SHOW_DIVIDER_BEGINNING) != 0;
+ } else if (childIndex == getChildCount()) {
+ return (mShowDividers & SHOW_DIVIDER_END) != 0;
+ } else if ((mShowDividers & SHOW_DIVIDER_MIDDLE) != 0) {
+ boolean hasVisibleViewBefore = false;
+ for (int i = childIndex - 1; i >= 0; i--) {
+ if (getChildAt(i).getVisibility() != GONE) {
+ hasVisibleViewBefore = true;
+ break;
+ }
+ }
+ return hasVisibleViewBefore;
+ }
+ return false;
+ }
+}
projects / debian / openrocket / blobdiff