TaskView.java revision 96e3bc1f8d7c199df6fca603d0c5e59d9b70ca1b 
1/*
2 * Copyright (C) 2014 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.systemui.recents.views;
18
19import android.animation.TimeInterpolator;
20import android.animation.ValueAnimator;
21import android.content.Context;
22import android.graphics.Canvas;
23import android.graphics.Outline;
24import android.graphics.Path;
25import android.graphics.Point;
26import android.graphics.Rect;
27import android.graphics.RectF;
28import android.util.AttributeSet;
29import android.view.MotionEvent;
30import android.view.View;
31import android.view.animation.AccelerateInterpolator;
32import android.widget.FrameLayout;
33import com.android.systemui.R;
34import com.android.systemui.recents.BakedBezierInterpolator;
35import com.android.systemui.recents.Constants;
36import com.android.systemui.recents.RecentsConfiguration;
37import com.android.systemui.recents.model.Task;
38
39
40/* A task view */
41public class TaskView extends FrameLayout implements View.OnClickListener,
42        Task.TaskCallbacks {
43    /** The TaskView callbacks */
44    interface TaskViewCallbacks {
45        public void onTaskIconClicked(TaskView tv);
46        public void onTaskInfoPanelShown(TaskView tv);
47        public void onTaskInfoPanelHidden(TaskView tv);
48        public void onTaskAppInfoClicked(TaskView tv);
49
50        // public void onTaskViewReboundToTask(TaskView tv, Task t);
51    }
52
53    int mDim;
54    int mMaxDim;
55    TimeInterpolator mDimInterpolator = new AccelerateInterpolator();
56
57    Task mTask;
58    boolean mTaskDataLoaded;
59    boolean mTaskInfoPaneVisible;
60    Point mLastTouchDown = new Point();
61    Path mRoundedRectClipPath = new Path();
62
63    TaskThumbnailView mThumbnailView;
64    TaskBarView mBarView;
65    TaskInfoView mInfoView;
66    TaskViewCallbacks mCb;
67
68
69    public TaskView(Context context) {
70        this(context, null);
71    }
72
73    public TaskView(Context context, AttributeSet attrs) {
74        this(context, attrs, 0);
75    }
76
77    public TaskView(Context context, AttributeSet attrs, int defStyleAttr) {
78        this(context, attrs, defStyleAttr, 0);
79    }
80
81    public TaskView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
82        super(context, attrs, defStyleAttr, defStyleRes);
83        setWillNotDraw(false);
84    }
85
86    @Override
87    protected void onFinishInflate() {
88        RecentsConfiguration config = RecentsConfiguration.getInstance();
89        mMaxDim = config.taskStackMaxDim;
90
91        // Bind the views
92        mThumbnailView = (TaskThumbnailView) findViewById(R.id.task_view_thumbnail);
93        mBarView = (TaskBarView) findViewById(R.id.task_view_bar);
94        mInfoView = (TaskInfoView) findViewById(R.id.task_view_info_pane);
95
96        if (mTaskDataLoaded) {
97            onTaskDataLoaded(false);
98        }
99    }
100
101    @Override
102    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
103        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
104
105        // Update the rounded rect clip path
106        RecentsConfiguration config = RecentsConfiguration.getInstance();
107        float radius = config.taskViewRoundedCornerRadiusPx;
108        mRoundedRectClipPath.reset();
109        mRoundedRectClipPath.addRoundRect(new RectF(0, 0, getMeasuredWidth(), getMeasuredHeight()),
110                radius, radius, Path.Direction.CW);
111
112        // Update the outline
113        Outline o = new Outline();
114        o.setRoundRect(0, 0, getMeasuredWidth(), getMeasuredHeight(), radius);
115        setOutline(o);
116    }
117
118    @Override
119    public boolean onInterceptTouchEvent(MotionEvent ev) {
120        switch (ev.getAction()) {
121            case MotionEvent.ACTION_DOWN:
122            case MotionEvent.ACTION_MOVE:
123                mLastTouchDown.set((int) ev.getX(), (int) ev.getY());
124                break;
125        }
126        return super.onInterceptTouchEvent(ev);
127    }
128
129    /** Set callback */
130    void setCallbacks(TaskViewCallbacks cb) {
131        mCb = cb;
132    }
133
134    /** Gets the task */
135    Task getTask() {
136        return mTask;
137    }
138
139    /** Synchronizes this view's properties with the task's transform */
140    void updateViewPropertiesToTaskTransform(TaskViewTransform animateFromTransform,
141                                             TaskViewTransform toTransform, int duration) {
142        RecentsConfiguration config = RecentsConfiguration.getInstance();
143        int minZ = config.taskViewTranslationZMinPx;
144        int incZ = config.taskViewTranslationZIncrementPx;
145
146        if (duration > 0) {
147            if (animateFromTransform != null) {
148                setTranslationY(animateFromTransform.translationY);
149                setTranslationZ(Math.max(minZ, minZ + (animateFromTransform.t * incZ)));
150                setScaleX(animateFromTransform.scale);
151                setScaleY(animateFromTransform.scale);
152                setAlpha(animateFromTransform.alpha);
153            }
154            animate().translationY(toTransform.translationY)
155                    .translationZ(Math.max(minZ, minZ + (toTransform.t * incZ)))
156                    .scaleX(toTransform.scale)
157                    .scaleY(toTransform.scale)
158                    .alpha(toTransform.alpha)
159                    .setDuration(duration)
160                    .setInterpolator(BakedBezierInterpolator.INSTANCE)
161                    .withLayer()
162                    .setUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
163                        @Override
164                        public void onAnimationUpdate(ValueAnimator animation) {
165                            updateDimOverlayFromScale();
166                        }
167                    })
168                    .start();
169        } else {
170            setTranslationY(toTransform.translationY);
171            setTranslationZ(Math.max(minZ, minZ + (toTransform.t * incZ)));
172            setScaleX(toTransform.scale);
173            setScaleY(toTransform.scale);
174            setAlpha(toTransform.alpha);
175        }
176        updateDimOverlayFromScale();
177        invalidate();
178    }
179
180    /** Resets this view's properties */
181    void resetViewProperties() {
182        setTranslationX(0f);
183        setTranslationY(0f);
184        setTranslationZ(0f);
185        setScaleX(1f);
186        setScaleY(1f);
187        setAlpha(1f);
188        invalidate();
189    }
190
191    /**
192     * When we are un/filtering, this method will set up the transform that we are animating to,
193     * in order to hide the task.
194     */
195    void prepareTaskTransformForFilterTaskHidden(TaskViewTransform toTransform) {
196        // Fade the view out and slide it away
197        toTransform.alpha = 0f;
198        toTransform.translationY += 200;
199    }
200
201    /**
202     * When we are un/filtering, this method will setup the transform that we are animating from,
203     * in order to show the task.
204     */
205    void prepareTaskTransformForFilterTaskVisible(TaskViewTransform fromTransform) {
206        // Fade the view in
207        fromTransform.alpha = 0f;
208    }
209
210    /** Animates this task view as it enters recents */
211    public void animateOnEnterRecents() {
212        RecentsConfiguration config = RecentsConfiguration.getInstance();
213        mBarView.setAlpha(0f);
214        mBarView.animate()
215                .alpha(1f)
216                .setStartDelay(235)
217                .setInterpolator(BakedBezierInterpolator.INSTANCE)
218                .setDuration(config.taskBarEnterAnimDuration)
219                .withLayer()
220                .start();
221    }
222
223    /** Animates this task view as it exits recents */
224    public void animateOnLeavingRecents(final Runnable r) {
225        RecentsConfiguration config = RecentsConfiguration.getInstance();
226        mBarView.animate()
227            .alpha(0f)
228            .setStartDelay(0)
229            .setInterpolator(BakedBezierInterpolator.INSTANCE)
230            .setDuration(config.taskBarExitAnimDuration)
231            .withLayer()
232            .withEndAction(new Runnable() {
233                @Override
234                public void run() {
235                    post(r);
236                }
237            })
238            .start();
239    }
240
241    /** Returns the rect we want to clip (it may not be the full rect) */
242    Rect getClippingRect(Rect outRect) {
243        getHitRect(outRect);
244        // XXX: We should get the hit rect of the thumbnail view and intersect, but this is faster
245        outRect.right = outRect.left + mThumbnailView.getRight();
246        outRect.bottom = outRect.top + mThumbnailView.getBottom();
247        return outRect;
248    }
249
250    /** Returns whether this task has an info pane visible */
251    boolean isInfoPaneVisible() {
252        return mTaskInfoPaneVisible;
253    }
254
255    /** Shows the info pane if it is not visible. */
256    void showInfoPane(Rect taskVisibleRect) {
257        if (mTaskInfoPaneVisible) return;
258
259        // Remove the bar view from the visible rect and update the info pane contents
260        taskVisibleRect.top += mBarView.getMeasuredHeight();
261        mInfoView.updateContents(taskVisibleRect);
262
263        // Show the info pane and animate it into view
264        mInfoView.setVisibility(View.VISIBLE);
265        mInfoView.animateCircularClip(mLastTouchDown, 0f, 1f, null, true);
266        mInfoView.setOnClickListener(this);
267        mTaskInfoPaneVisible = true;
268
269        // Notify any callbacks
270        if (mCb != null) {
271            mCb.onTaskInfoPanelShown(this);
272        }
273    }
274
275    /** Hides the info pane if it is visible. */
276    void hideInfoPane() {
277        if (!mTaskInfoPaneVisible) return;
278        RecentsConfiguration config = RecentsConfiguration.getInstance();
279
280        // Cancel any circular clip animation
281        mInfoView.cancelCircularClipAnimation();
282
283        // Animate the info pane out
284        mInfoView.animate()
285                .alpha(0f)
286                .setDuration(config.taskViewInfoPaneAnimDuration)
287                .setInterpolator(BakedBezierInterpolator.INSTANCE)
288                .withLayer()
289                .withEndAction(new Runnable() {
290                    @Override
291                    public void run() {
292                        mInfoView.setVisibility(View.INVISIBLE);
293                        mInfoView.setOnClickListener(null);
294
295                        mInfoView.setAlpha(1f);
296                    }
297                })
298                .start();
299        mTaskInfoPaneVisible = false;
300
301        // Notify any callbacks
302        if (mCb != null) {
303            mCb.onTaskInfoPanelHidden(this);
304        }
305    }
306
307    /** Enable the hw layers on this task view */
308    void enableHwLayers() {
309        mThumbnailView.setLayerType(View.LAYER_TYPE_HARDWARE, null);
310    }
311
312    /** Disable the hw layers on this task view */
313    void disableHwLayers() {
314        mThumbnailView.setLayerType(View.LAYER_TYPE_NONE, null);
315    }
316
317    /** Update the dim as a function of the scale of this view. */
318    void updateDimOverlayFromScale() {
319        float minScale = Constants.Values.TaskStackView.StackPeekMinScale;
320        float scaleRange = 1f - minScale;
321        float dim = (1f - getScaleX()) / scaleRange;
322        dim = mDimInterpolator.getInterpolation(Math.min(dim, 1f));
323        mDim = Math.max(0, Math.min(mMaxDim, (int) (dim * 255)));
324        invalidate();
325    }
326
327    @Override
328    public void draw(Canvas canvas) {
329        // Apply the rounded rect clip path on the whole view
330        canvas.clipPath(mRoundedRectClipPath);
331
332        super.draw(canvas);
333
334        // Apply the dim if necessary
335        if (mDim > 0) {
336            canvas.drawColor(mDim << 24);
337        }
338    }
339
340    /**** TaskCallbacks Implementation ****/
341
342    /** Binds this task view to the task */
343    public void onTaskBound(Task t) {
344        mTask = t;
345        mTask.setCallbacks(this);
346    }
347
348    @Override
349    public void onTaskDataLoaded(boolean reloadingTaskData) {
350        if (mThumbnailView != null && mBarView != null && mInfoView != null) {
351            // Bind each of the views to the new task data
352            mThumbnailView.rebindToTask(mTask, reloadingTaskData);
353            mBarView.rebindToTask(mTask, reloadingTaskData);
354            mInfoView.rebindToTask(mTask, reloadingTaskData);
355            // Rebind any listeners
356            mBarView.mApplicationIcon.setOnClickListener(this);
357            mInfoView.mAppInfoButton.setOnClickListener(this);
358        }
359        mTaskDataLoaded = true;
360    }
361
362    @Override
363    public void onTaskDataUnloaded() {
364        if (mThumbnailView != null && mBarView != null && mInfoView != null) {
365            // Unbind each of the views from the task data and remove the task callback
366            mTask.setCallbacks(null);
367            mThumbnailView.unbindFromTask();
368            mBarView.unbindFromTask();
369            // Unbind any listeners
370            mBarView.mApplicationIcon.setOnClickListener(null);
371            mInfoView.mAppInfoButton.setOnClickListener(null);
372        }
373        mTaskDataLoaded = false;
374    }
375
376    @Override
377    public void onClick(View v) {
378        if (v == mInfoView) {
379            hideInfoPane();
380        } else if (v == mBarView.mApplicationIcon) {
381            mCb.onTaskIconClicked(this);
382        } else if (v == mInfoView.mAppInfoButton) {
383            mCb.onTaskAppInfoClicked(this);
384        }
385    }
386}