summaryrefslogtreecommitdiffstats
path: root/src/com/android/launcher3/ShortcutAndWidgetContainer.java
blob: bb5601e90377437ef0fe79fed5ae65c42157c00e (plain)
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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*
 * Copyright (C) 2008 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;

import android.app.WallpaperManager;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Rect;
import android.view.View;
import android.view.ViewGroup;

public class ShortcutAndWidgetContainer extends ViewGroup {
    static final String TAG = "CellLayoutChildren";

    // These are temporary variables to prevent having to allocate a new object just to
    // return an (x, y) value from helper functions. Do NOT use them to maintain other state.
    private final int[] mTmpCellXY = new int[2];

    private final WallpaperManager mWallpaperManager;

    private boolean mIsHotseatLayout;

    private int mCellWidth;
    private int mCellHeight;

    private int mWidthGap;
    private int mHeightGap;

    private int mCountX;
    private int mCountY;

    private boolean mInvertIfRtl = false;

    public ShortcutAndWidgetContainer(Context context) {
        super(context);
        mWallpaperManager = WallpaperManager.getInstance(context);
    }

    public void setCellDimensions(int cellWidth, int cellHeight, int widthGap, int heightGap,
            int countX, int countY) {
        mCellWidth = cellWidth;
        mCellHeight = cellHeight;
        mWidthGap = widthGap;
        mHeightGap = heightGap;
        mCountX = countX;
        mCountY = countY;
    }

    public View getChildAt(int x, int y) {
        final int count = getChildCount();
        for (int i = 0; i < count; i++) {
            View child = getChildAt(i);
            CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();

            if ((lp.cellX <= x) && (x < lp.cellX + lp.cellHSpan) &&
                    (lp.cellY <= y) && (y < lp.cellY + lp.cellVSpan)) {
                return child;
            }
        }
        return null;
    }

    @Override
    protected void dispatchDraw(Canvas canvas) {
        @SuppressWarnings("all") // suppress dead code warning
        final boolean debug = false;
        if (debug) {
            // Debug drawing for hit space
            Paint p = new Paint();
            p.setColor(0x6600FF00);
            for (int i = getChildCount() - 1; i >= 0; i--) {
                final View child = getChildAt(i);
                final CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();

                canvas.drawRect(lp.x, lp.y, lp.x + lp.width, lp.y + lp.height, p);
            }
        }
        super.dispatchDraw(canvas);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int count = getChildCount();

        int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec);
        int heightSpecSize =  MeasureSpec.getSize(heightMeasureSpec);
        setMeasuredDimension(widthSpecSize, heightSpecSize);

        for (int i = 0; i < count; i++) {
            View child = getChildAt(i);
            if (child.getVisibility() != GONE) {
                measureChild(child);
            }
        }
    }

    public void setupLp(CellLayout.LayoutParams lp) {
        lp.setup(mCellWidth, mCellHeight, mWidthGap, mHeightGap, invertLayoutHorizontally(),
                mCountX);
    }

    // Set whether or not to invert the layout horizontally if the layout is in RTL mode.
    public void setInvertIfRtl(boolean invert) {
        mInvertIfRtl = invert;
    }

    public void setIsHotseat(boolean isHotseat) {
        mIsHotseatLayout = isHotseat;
    }

    int getCellContentWidth() {
        final LauncherAppState app = LauncherAppState.getInstance();
        final DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        return Math.min(getMeasuredHeight(), mIsHotseatLayout ?
                grid.hotseatCellWidthPx: grid.cellWidthPx);
    }

    int getCellContentHeight() {
        final LauncherAppState app = LauncherAppState.getInstance();
        final DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        return Math.min(getMeasuredHeight(), mIsHotseatLayout ?
                grid.hotseatCellHeightPx : grid.cellHeightPx);
    }

    public void measureChild(View child) {
        final LauncherAppState app = LauncherAppState.getInstance();
        final DeviceProfile grid = app.getDynamicGrid().getDeviceProfile();
        final int cellWidth = mCellWidth;
        final int cellHeight = mCellHeight;
        CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
        if (!lp.isFullscreen) {
            lp.setup(cellWidth, cellHeight, mWidthGap, mHeightGap, invertLayoutHorizontally(),
                    mCountX);

            if (child instanceof LauncherAppWidgetHostView) {
                // Widgets have their own padding, so skip
            } else {
                // Otherwise, center the icon
                int cHeight = getCellContentHeight();
                int cellPaddingY = (int) Math.max(0, ((lp.height - cHeight) / 2f));
                int cellPaddingX = (int) (grid.edgeMarginPx / 2f);
                child.setPadding(cellPaddingX, cellPaddingY, cellPaddingX, 0);
            }
        } else {
            lp.x = 0;
            lp.y = 0;
            lp.width = getMeasuredWidth();
            lp.height = getMeasuredHeight();
        }
        int childWidthMeasureSpec = MeasureSpec.makeMeasureSpec(lp.width, MeasureSpec.EXACTLY);
        int childheightMeasureSpec = MeasureSpec.makeMeasureSpec(lp.height,
                MeasureSpec.EXACTLY);
        child.measure(childWidthMeasureSpec, childheightMeasureSpec);
    }

    private boolean invertLayoutHorizontally() {
        return mInvertIfRtl && isLayoutRtl();
    }

    public boolean isLayoutRtl() {
        return (getLayoutDirection() == LAYOUT_DIRECTION_RTL);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        int count = getChildCount();
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            if (child.getVisibility() != GONE) {
                CellLayout.LayoutParams lp = (CellLayout.LayoutParams) child.getLayoutParams();
                int childLeft = lp.x;
                int childTop = lp.y;
                child.layout(childLeft, childTop, childLeft + lp.width, childTop + lp.height);

                if (lp.dropped) {
                    lp.dropped = false;

                    final int[] cellXY = mTmpCellXY;
                    getLocationOnScreen(cellXY);
                    mWallpaperManager.sendWallpaperCommand(getWindowToken(),
                            WallpaperManager.COMMAND_DROP,
                            cellXY[0] + childLeft + lp.width / 2,
                            cellXY[1] + childTop + lp.height / 2, 0, null);
                }
            }
        }
    }

    @Override
    public boolean shouldDelayChildPressedState() {
        return false;
    }

    @Override
    public void requestChildFocus(View child, View focused) {
        super.requestChildFocus(child, focused);
        if (child != null) {
            Rect r = new Rect();
            child.getDrawingRect(r);
            requestRectangleOnScreen(r);
        }
    }

    @Override
    public void cancelLongPress() {
        super.cancelLongPress();

        // Cancel long press for all children
        final int count = getChildCount();
        for (int i = 0; i < count; i++) {
            final View child = getChildAt(i);
            child.cancelLongPress();
        }
    }

    @Override
    protected void setChildrenDrawingCacheEnabled(boolean enabled) {
        final int count = getChildCount();
        for (int i = 0; i < count; i++) {
            final View view = getChildAt(i);
            view.setDrawingCacheEnabled(enabled);
            // Update the drawing caches
            if (!view.isHardwareAccelerated() && enabled) {
                view.buildDrawingCache(true);
            }
        }
    }

    @Override
    protected void setChildrenDrawnWithCacheEnabled(boolean enabled) {
        super.setChildrenDrawnWithCacheEnabled(enabled);
    }
}