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/*
* Copyright (C) 2015 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.test.voiceinteraction;
import android.annotation.Nullable;
import android.app.AssistStructure;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import java.util.ArrayList;
public class AssistVisualizer extends View {
static final String TAG = "AssistVisualizer";
AssistStructure mAssistStructure;
final Paint mFramePaint = new Paint();
final ArrayList<Rect> mTextRects = new ArrayList<>();
final int[] mTmpLocation = new int[2];
public AssistVisualizer(Context context, @Nullable AttributeSet attrs) {
super(context, attrs);
setWillNotDraw(false);
mFramePaint.setColor(0xffff0000);
mFramePaint.setStyle(Paint.Style.STROKE);
mFramePaint.setStrokeWidth(0);
}
public void setAssistStructure(AssistStructure as) {
mAssistStructure = as;
mAssistStructure.dump();
mTextRects.clear();
final int N = as.getWindowNodeCount();
if (N > 0) {
for (int i=0; i<N; i++) {
AssistStructure.WindowNode windowNode = as.getWindowNodeAt(i);
buildTextRects(windowNode.getRootViewNode(), windowNode.getLeft(),
windowNode.getTop());
}
}
Log.d(TAG, "Building text rects in " + this + ": found " + mTextRects.size());
invalidate();
}
public void clearAssistData() {
mAssistStructure = null;
mTextRects.clear();
}
void buildTextRects(AssistStructure.ViewNode root, int parentLeft, int parentTop) {
if (root.getVisibility() != View.VISIBLE) {
return;
}
int left = parentLeft+root.getLeft();
int top = parentTop+root.getTop();
if (root.getText() != null || root.getContentDescription() != null) {
Rect r = new Rect(left, top, left+root.getWidth(), top+root.getHeight());
Log.d(TAG, "View " + root.getClassName() + " " + left + "," + top + " tr "
+ r.toShortString() + ": "
+ (root.getText() != null ? root.getText() : root.getContentDescription()));
mTextRects.add(r);
}
final int N = root.getChildCount();
if (N > 0) {
left -= root.getScrollX();
top -= root.getScrollY();
for (int i=0; i<N; i++) {
AssistStructure.ViewNode child = root.getChildAt(i);
buildTextRects(child, left, top);
}
}
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
getLocationOnScreen(mTmpLocation);
final int N = mTextRects.size();
Log.d(TAG, "Drawing text rects in " + this + ": found " + mTextRects.size());
for (int i=0; i<N; i++) {
Rect r = mTextRects.get(i);
canvas.drawRect(r.left-mTmpLocation[0], r.top-mTmpLocation[1],
r.right-mTmpLocation[0], r.bottom-mTmpLocation[1], mFramePaint);
}
}
}
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