1/*
2 * Copyright 2018 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 androidx.legacy.widget;
18
19import android.annotation.SuppressLint;
20import android.content.Context;
21import android.graphics.Canvas;
22import android.util.AttributeSet;
23import android.view.View;
24
25import androidx.annotation.NonNull;
26import androidx.annotation.Nullable;
27
28/**
29 * Space is a lightweight {@link View} subclass that may be used to create gaps between components
30 * in general purpose layouts.
31 *
32 * @deprecated Use framework {@link android.widget.Space} class instead.
33 */
34@Deprecated
35public class Space extends View {
36
37    /**
38     * @deprecated Use framework {@link android.widget.Space} class instead.
39     */
40    @Deprecated
41    public Space(@NonNull Context context, @Nullable AttributeSet attrs, int defStyle) {
42        super(context, attrs, defStyle);
43        if (getVisibility() == VISIBLE) {
44            setVisibility(INVISIBLE);
45        }
46    }
47
48    /**
49     * @deprecated Use framework {@link android.widget.Space} class instead.
50     */
51    @Deprecated
52    public Space(@NonNull Context context, @Nullable AttributeSet attrs) {
53        this(context, attrs, 0);
54    }
55
56    /**
57     * @deprecated Use framework {@link android.widget.Space} class instead.
58     */
59    @Deprecated
60    public Space(@NonNull Context context) {
61        this(context, null);
62    }
63
64    /**
65     * Draw nothing.
66     *
67     * @param canvas an unused parameter.
68     *
69     * @deprecated Use framework {@link android.widget.Space} class instead.
70     */
71    @Deprecated
72    @Override
73    @SuppressLint("MissingSuperCall")
74    public void draw(Canvas canvas) {
75    }
76
77    /**
78     * Compare to: {@link View#getDefaultSize(int, int)}
79     * If mode is AT_MOST, return the child size instead of the parent size
80     * (unless it is too big).
81     */
82    private static int getDefaultSize2(int size, int measureSpec) {
83        int result = size;
84        int specMode = MeasureSpec.getMode(measureSpec);
85        int specSize = MeasureSpec.getSize(measureSpec);
86
87        switch (specMode) {
88            case MeasureSpec.UNSPECIFIED:
89                result = size;
90                break;
91            case MeasureSpec.AT_MOST:
92                result = Math.min(size, specSize);
93                break;
94            case MeasureSpec.EXACTLY:
95                result = specSize;
96                break;
97        }
98        return result;
99    }
100
101    /**
102     * @deprecated Use framework {@link android.widget.Space} class instead.
103     */
104    @Deprecated
105    @Override
106    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
107        setMeasuredDimension(
108                getDefaultSize2(getSuggestedMinimumWidth(), widthMeasureSpec),
109                getDefaultSize2(getSuggestedMinimumHeight(), heightMeasureSpec));
110    }
111}