content: /*
   * 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.view.inspector.InspectableProperty;
  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.
           */
          @InspectableProperty(name = "layout_x")
          public int x;
          /**
           * The vertical, or Y, location of the child within the view group.
           */
          @InspectableProperty(name = "layout_y")
          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 + "}";
          }
      }
  }
  
  
  