1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
/*
* Copyright (C) 2017 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.launcher3.states;
import static com.android.launcher3.LauncherAnimUtils.SPRING_LOADED_TRANSITION_MS;
import android.content.pm.ActivityInfo;
import android.graphics.Rect;
import android.os.Handler;
import android.view.View;
import com.android.launcher3.DeviceProfile;
import com.android.launcher3.InstallShortcutReceiver;
import com.android.launcher3.Launcher;
import com.android.launcher3.LauncherState;
import com.android.launcher3.Workspace;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
/**
* Definition for spring loaded state used during drag and drop.
*/
public class SpringLoadedState extends LauncherState {
private static final int STATE_FLAGS = FLAG_SHOW_SCRIM | FLAG_MULTI_PAGE |
FLAG_DISABLE_ACCESSIBILITY | FLAG_DISABLE_RESTORE | FLAG_WORKSPACE_ICONS_CAN_BE_DRAGGED |
FLAG_DISABLE_PAGE_CLIPPING;
// Determines how long to wait after a rotation before restoring the screen orientation to
// match the sensor state.
private static final int RESTORE_SCREEN_ORIENTATION_DELAY = 500;
public SpringLoadedState(int id) {
super(id, ContainerType.OVERVIEW, SPRING_LOADED_TRANSITION_MS, STATE_FLAGS);
}
@Override
public float[] getWorkspaceScaleAndTranslation(Launcher launcher) {
DeviceProfile grid = launcher.getDeviceProfile();
Workspace ws = launcher.getWorkspace();
if (ws.getChildCount() == 0) {
return super.getWorkspaceScaleAndTranslation(launcher);
}
if (grid.isVerticalBarLayout()) {
float scale = grid.workspaceSpringLoadShrinkFactor;
return new float[] {scale, 0, 0};
}
float scale = grid.workspaceSpringLoadShrinkFactor;
Rect insets = launcher.getDragLayer().getInsets();
float scaledHeight = scale * ws.getNormalChildHeight();
float shrunkTop = insets.top + grid.dropTargetBarSizePx;
float shrunkBottom = ws.getMeasuredHeight() - insets.bottom
- grid.workspacePadding.bottom
- grid.workspaceSpringLoadedBottomSpace;
float totalShrunkSpace = shrunkBottom - shrunkTop;
float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2;
float halfHeight = ws.getHeight() / 2;
float myCenter = ws.getTop() + halfHeight;
float cellTopFromCenter = halfHeight - ws.getChildAt(0).getTop();
float actualCellTop = myCenter - cellTopFromCenter * scale;
return new float[] { scale, 0, (desiredCellTop - actualCellTop) / scale};
}
@Override
public void onStateEnabled(Launcher launcher) {
Workspace ws = launcher.getWorkspace();
ws.showPageIndicatorAtCurrentScroll();
ws.getPageIndicator().setShouldAutoHide(false);
// Lock the orientation:
if (launcher.isRotationEnabled()) {
launcher.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LOCKED);
}
// Prevent any Un/InstallShortcutReceivers from updating the db while we are
// in spring loaded mode
InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_DRAG_AND_DROP);
}
@Override
public void onStateDisabled(final Launcher launcher) {
launcher.getWorkspace().getPageIndicator().setShouldAutoHide(true);
// Unlock rotation lock
if (launcher.isRotationEnabled()) {
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
launcher.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);
}
}, RESTORE_SCREEN_ORIENTATION_DELAY);
}
// Re-enable any Un/InstallShortcutReceiver and now process any queued items
InstallShortcutReceiver.disableAndFlushInstallQueue(
InstallShortcutReceiver.FLAG_DRAG_AND_DROP, launcher);
}
@Override
public View getFinalFocus(Launcher launcher) {
return null;
}
}
|