1/*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.layoutlib.bridge.test.widgets;
18
19import android.content.Context;
20import android.graphics.Canvas;
21import android.graphics.Color;
22import android.graphics.Paint;
23import android.graphics.Rect;
24import android.util.AttributeSet;
25import android.view.View;
26
27@SuppressWarnings("unused") // Used from RenderTests
28public class HookWidget extends View {
29    private static final Runnable NOP_RUNNABLE = () -> {};
30    private static Runnable sOnPreDrawHook = NOP_RUNNABLE;
31    private static Runnable sOnPreMeasure = NOP_RUNNABLE;
32    private static Runnable sOnPreLayout = NOP_RUNNABLE;
33    private static Runnable sOnPostDrawHook = NOP_RUNNABLE;
34    private static Runnable sOnPostMeasure = NOP_RUNNABLE;
35    private static Runnable sOnPostLayout = NOP_RUNNABLE;
36
37    public static void setOnPreDrawHook(Runnable runnable) {
38        sOnPreDrawHook = runnable;
39    }
40
41    public static void setOnPreMeasure(Runnable runnable) {
42        sOnPreMeasure = runnable;
43    }
44
45    public static void setOnPreLayout(Runnable runnable) {
46        sOnPreLayout = runnable;
47    }
48
49    public static void setOnPostDrawHook(Runnable onPostDrawHook) {
50        sOnPostDrawHook = onPostDrawHook;
51    }
52
53    public static void setOnPostMeasure(Runnable onPostMeasure) {
54        sOnPostMeasure = onPostMeasure;
55    }
56
57    public static void setOnPostLayout(Runnable onPostLayout) {
58        sOnPostLayout = onPostLayout;
59    }
60
61    public static void reset() {
62        sOnPreDrawHook = NOP_RUNNABLE;
63        sOnPreMeasure = NOP_RUNNABLE;
64        sOnPreLayout = NOP_RUNNABLE;
65        sOnPostDrawHook = NOP_RUNNABLE;
66        sOnPostMeasure = NOP_RUNNABLE;
67        sOnPostLayout = NOP_RUNNABLE;
68    }
69
70    public HookWidget(Context context) {
71        super(context);
72    }
73
74    public HookWidget(Context context, AttributeSet attrs) {
75        super(context, attrs);
76    }
77
78    public HookWidget(Context context, AttributeSet attrs, int defStyleAttr) {
79        super(context, attrs, defStyleAttr);
80    }
81
82    public HookWidget(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
83        super(context, attrs, defStyleAttr, defStyleRes);
84    }
85
86    @Override
87    protected void onDraw(Canvas canvas) {
88        sOnPreDrawHook.run();
89
90        super.onDraw(canvas);
91        Paint paint = new Paint();
92        paint.setColor(Color.BLUE);
93        Rect rect = new Rect();
94        getDrawingRect(rect);
95        canvas.drawRect(rect, paint);
96
97        sOnPostDrawHook.run();
98    }
99
100    @Override
101    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
102        sOnPreMeasure.run();
103        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
104        sOnPostMeasure.run();
105    }
106
107    @Override
108    protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
109        sOnPreLayout.run();
110        super.onLayout(changed, left, top, right, bottom);
111        sOnPostLayout.run();
112    }
113}
114