| /* |
| * Copyright (C) 2006 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 android.widget; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.RemoteViews.RemoteView; |
| |
| |
| /** |
| * A layout that lets you specify exact locations (x/y coordinates) of its |
| * children. Absolute layouts are less flexible and harder to maintain than |
| * other types of layouts without absolute positioning. |
| * |
| * <p><strong>XML attributes</strong></p> <p> See {@link |
| * android.R.styleable#ViewGroup ViewGroup Attributes}, {@link |
| * android.R.styleable#View View Attributes}</p> |
| * |
| * @deprecated Use {@link android.widget.FrameLayout}, {@link android.widget.RelativeLayout} |
| * or a custom layout instead. |
| */ |
| @Deprecated |
| @RemoteView |
| public class AbsoluteLayout extends ViewGroup { |
| public AbsoluteLayout(Context context) { |
| this(context, null); |
| } |
| |
| public AbsoluteLayout(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public AbsoluteLayout(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public AbsoluteLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| } |
| |
| @Override |
| protected 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++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != GONE) { |
| int childRight; |
| int childBottom; |
| |
| AbsoluteLayout.LayoutParams lp |
| = (AbsoluteLayout.LayoutParams) child.getLayoutParams(); |
| |
| childRight = lp.x + child.getMeasuredWidth(); |
| childBottom = lp.y + child.getMeasuredHeight(); |
| |
| maxWidth = Math.max(maxWidth, childRight); |
| maxHeight = Math.max(maxHeight, childBottom); |
| } |
| } |
| |
| // Account for padding too |
| maxWidth += mPaddingLeft + mPaddingRight; |
| maxHeight += mPaddingTop + mPaddingBottom; |
| |
| // Check against minimum height and width |
| maxHeight = Math.max(maxHeight, getSuggestedMinimumHeight()); |
| maxWidth = Math.max(maxWidth, getSuggestedMinimumWidth()); |
| |
| setMeasuredDimension(resolveSizeAndState(maxWidth, widthMeasureSpec, 0), |
| resolveSizeAndState(maxHeight, heightMeasureSpec, 0)); |
| } |
| |
| /** |
| * Returns a set of layout parameters with a width of |
| * {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT}, |
| * a height of {@link android.view.ViewGroup.LayoutParams#WRAP_CONTENT} |
| * and with the coordinates (0, 0). |
| */ |
| @Override |
| protected ViewGroup.LayoutParams generateDefaultLayoutParams() { |
| return new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 0, 0); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int l, int t, |
| int r, int b) { |
| int count = getChildCount(); |
| |
| for (int i = 0; i < count; i++) { |
| View child = getChildAt(i); |
| if (child.getVisibility() != GONE) { |
| |
| AbsoluteLayout.LayoutParams lp = |
| (AbsoluteLayout.LayoutParams) child.getLayoutParams(); |
| |
| int childLeft = mPaddingLeft + lp.x; |
| int childTop = mPaddingTop + lp.y; |
| child.layout(childLeft, childTop, |
| childLeft + child.getMeasuredWidth(), |
| childTop + child.getMeasuredHeight()); |
| |
| } |
| } |
| } |
| |
| @Override |
| public ViewGroup.LayoutParams generateLayoutParams(AttributeSet attrs) { |
| return new AbsoluteLayout.LayoutParams(getContext(), attrs); |
| } |
| |
| // Override to allow type-checking of LayoutParams. |
| @Override |
| protected boolean checkLayoutParams(ViewGroup.LayoutParams p) { |
| return p instanceof AbsoluteLayout.LayoutParams; |
| } |
| |
| @Override |
| protected ViewGroup.LayoutParams generateLayoutParams(ViewGroup.LayoutParams p) { |
| return new LayoutParams(p); |
| } |
| |
| @Override |
| public boolean shouldDelayChildPressedState() { |
| return false; |
| } |
| |
| /** |
| * Per-child layout information associated with AbsoluteLayout. |
| * See |
| * {@link android.R.styleable#AbsoluteLayout_Layout Absolute Layout Attributes} |
| * for a list of all child view attributes that this class supports. |
| */ |
| public static class LayoutParams extends ViewGroup.LayoutParams { |
| /** |
| * The horizontal, or X, location of the child within the view group. |
| */ |
| public int x; |
| /** |
| * The vertical, or Y, location of the child within the view group. |
| */ |
| public int y; |
| |
| /** |
| * Creates a new set of layout parameters with the specified width, |
| * height and location. |
| * |
| * @param width the width, either {@link #MATCH_PARENT}, |
| {@link #WRAP_CONTENT} or a fixed size in pixels |
| * @param height the height, either {@link #MATCH_PARENT}, |
| {@link #WRAP_CONTENT} or a fixed size in pixels |
| * @param x the X location of the child |
| * @param y the Y location of the child |
| */ |
| public LayoutParams(int width, int height, int x, int y) { |
| super(width, height); |
| this.x = x; |
| this.y = y; |
| } |
| |
| /** |
| * Creates a new set of layout parameters. The values are extracted from |
| * the supplied attributes set and context. The XML attributes mapped |
| * to this set of layout parameters are: |
| * |
| * <ul> |
| * <li><code>layout_x</code>: the X location of the child</li> |
| * <li><code>layout_y</code>: the Y location of the child</li> |
| * <li>All the XML attributes from |
| * {@link android.view.ViewGroup.LayoutParams}</li> |
| * </ul> |
| * |
| * @param c the application environment |
| * @param attrs the set of attributes from which to extract the layout |
| * parameters values |
| */ |
| public LayoutParams(Context c, AttributeSet attrs) { |
| super(c, attrs); |
| TypedArray a = c.obtainStyledAttributes(attrs, |
| com.android.internal.R.styleable.AbsoluteLayout_Layout); |
| x = a.getDimensionPixelOffset( |
| com.android.internal.R.styleable.AbsoluteLayout_Layout_layout_x, 0); |
| y = a.getDimensionPixelOffset( |
| com.android.internal.R.styleable.AbsoluteLayout_Layout_layout_y, 0); |
| a.recycle(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public LayoutParams(ViewGroup.LayoutParams source) { |
| super(source); |
| } |
| |
| @Override |
| public String debug(String output) { |
| return output + "Absolute.LayoutParams={width=" |
| + sizeToString(width) + ", height=" + sizeToString(height) |
| + " x=" + x + " y=" + y + "}"; |
| } |
| } |
| } |
| |
| |