1/*
2 * Copyright (C) 2007 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 android.widget.scroll;
18
19import com.android.frameworks.coretests.R;
20
21import android.app.Activity;
22import android.os.Bundle;
23import android.graphics.Rect;
24import android.view.View;
25import android.widget.ScrollView;
26import android.widget.TextView;
27
28/**
29 * A screen with some scenarios that exercise {@link ScrollView}'s implementation
30 * of {@link android.view.ViewGroup#requestChildRectangleOnScreen}:
31 * <li>Scrolling to something off screen (from top and from bottom)
32 * <li>Scrolling to bring something that is larger than the screen on screen
33 *  (from top and from bottom).
34 */
35public class RequestRectangleVisible extends Activity {
36
37    @Override
38    protected void onCreate(Bundle icicle) {
39        super.onCreate(icicle);
40
41        setContentView(R.layout.scroll_to_rectangle);
42
43        final Rect rect = new Rect();
44        final View childToMakeVisible = findViewById(R.id.childToMakeVisible);
45
46        final TextView topBlob = findViewById(R.id.topBlob);
47        final TextView bottomBlob = findViewById(R.id.bottomBlob);
48
49        // estimate to get blobs larger than screen
50        int screenHeight = getWindowManager().getDefaultDisplay().getHeight();
51        int numLinesForScreen = screenHeight / 18;
52
53        for (int i = 0; i < numLinesForScreen; i++) {
54            topBlob.append(i + " another line in the blob\n");
55            bottomBlob.append(i + " another line in the blob\n");
56        }
57
58        findViewById(R.id.scrollToRectFromTop).setOnClickListener(new View.OnClickListener() {
59
60            public void onClick(View v) {
61                rect.set(0, 0, childToMakeVisible.getLeft(), childToMakeVisible.getHeight());
62                childToMakeVisible.requestRectangleOnScreen(rect, true);
63            }
64        });
65
66        findViewById(R.id.scrollToRectFromTop2).setOnClickListener(new View.OnClickListener() {
67
68            public void onClick(View v) {
69                rect.set(0, 0, topBlob.getWidth(), topBlob.getHeight());
70                topBlob.requestRectangleOnScreen(rect, true);
71            }
72        });
73
74        findViewById(R.id.scrollToRectFromBottom).setOnClickListener(new View.OnClickListener() {
75
76            public void onClick(View v) {
77                rect.set(0, 0, childToMakeVisible.getLeft(), childToMakeVisible.getHeight());
78                childToMakeVisible.requestRectangleOnScreen(rect, true);
79            }
80        });
81
82        findViewById(R.id.scrollToRectFromBottom2).setOnClickListener(new View.OnClickListener() {
83
84            public void onClick(View v) {
85                rect.set(0, 0, bottomBlob.getWidth(), bottomBlob.getHeight());
86                bottomBlob.requestRectangleOnScreen(rect, true);
87            }
88        });
89
90    }
91
92
93
94}
95