| /* |
| * Copyright (C) 2008 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.android.phone; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.ViewGroup; |
| |
| public class ButtonGridLayout extends ViewGroup { |
| |
| private final int mColumns = 3; |
| |
| public ButtonGridLayout(Context context) { |
| super(context); |
| } |
| |
| public ButtonGridLayout(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| public ButtonGridLayout(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| @Override |
| protected void onLayout(boolean changed, int l, int t, int r, int b) { |
| int y = mPaddingTop; |
| final int rows = getRows(); |
| final View child0 = getChildAt(0); |
| final int yInc = (getHeight() - mPaddingTop - mPaddingBottom) / rows; |
| final int xInc = (getWidth() - mPaddingLeft - mPaddingRight) / mColumns; |
| final int childWidth = child0.getMeasuredWidth(); |
| final int childHeight = child0.getMeasuredHeight(); |
| final int xOffset = (xInc - childWidth) / 2; |
| final int yOffset = (yInc - childHeight) / 2; |
| |
| for (int row = 0; row < rows; row++) { |
| int x = mPaddingLeft; |
| for (int col = 0; col < mColumns; col++) { |
| int cell = row * mColumns + col; |
| if (cell >= getChildCount()) { |
| break; |
| } |
| View child = getChildAt(cell); |
| child.layout(x + xOffset, y + yOffset, |
| x + xOffset + childWidth, |
| y + yOffset + childHeight); |
| x += xInc; |
| } |
| y += yInc; |
| } |
| } |
| |
| private int getRows() { |
| return (getChildCount() + mColumns - 1) / mColumns; |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| int width = mPaddingLeft + mPaddingRight; |
| int height = mPaddingTop + mPaddingBottom; |
| |
| // Measure the first child and get it's size |
| View child = getChildAt(0); |
| child.measure(MeasureSpec.UNSPECIFIED , MeasureSpec.UNSPECIFIED); |
| int childWidth = child.getMeasuredWidth(); |
| int childHeight = child.getMeasuredHeight(); |
| // Make sure the other children are measured as well, to initialize |
| for (int i = 1; i < getChildCount(); i++) { |
| getChildAt(0).measure(MeasureSpec.UNSPECIFIED , MeasureSpec.UNSPECIFIED); |
| } |
| // All cells are going to be the size of the first child |
| width += mColumns * childWidth; |
| height += getRows() * childHeight; |
| |
| width = resolveSize(width, widthMeasureSpec); |
| height = resolveSize(height, heightMeasureSpec); |
| setMeasuredDimension(width, height); |
| } |
| |
| } |