TaskViewHeader.java revision 88f3db9e2180be5e2d3c524b9f1dd99e05465041 
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.Animator;
20import android.animation.AnimatorListenerAdapter;
21import android.animation.AnimatorSet;
22import android.animation.ArgbEvaluator;
23import android.animation.ObjectAnimator;
24import android.animation.ValueAnimator;
25import android.content.Context;
26import android.content.res.ColorStateList;
27import android.graphics.Canvas;
28import android.graphics.Color;
29import android.graphics.drawable.Drawable;
30import android.graphics.drawable.GradientDrawable;
31import android.graphics.drawable.RippleDrawable;
32import android.graphics.Outline;
33import android.graphics.Paint;
34import android.graphics.PorterDuff;
35import android.graphics.PorterDuffColorFilter;
36import android.graphics.PorterDuffXfermode;
37import android.graphics.Rect;
38import android.util.AttributeSet;
39import android.view.View;
40import android.view.ViewOutlineProvider;
41import android.widget.FrameLayout;
42import android.widget.ImageView;
43import android.widget.TextView;
44import com.android.systemui.R;
45import com.android.systemui.recents.Constants;
46import com.android.systemui.recents.RecentsConfiguration;
47import com.android.systemui.recents.misc.SystemServicesProxy;
48import com.android.systemui.recents.misc.Utilities;
49import com.android.systemui.recents.model.RecentsTaskLoader;
50import com.android.systemui.recents.model.Task;
51
52
53/* The task bar view */
54public class TaskViewHeader extends FrameLayout {
55
56    RecentsConfiguration mConfig;
57    private SystemServicesProxy mSsp;
58
59    // Header views
60    ImageView mMoveTaskButton;
61    ImageView mDismissButton;
62    ImageView mApplicationIcon;
63    TextView mActivityDescription;
64
65    // Header drawables
66    boolean mCurrentPrimaryColorIsDark;
67    int mCurrentPrimaryColor;
68    int mBackgroundColor;
69    Drawable mLightDismissDrawable;
70    Drawable mDarkDismissDrawable;
71    RippleDrawable mBackground;
72    GradientDrawable mBackgroundColorDrawable;
73    AnimatorSet mFocusAnimator;
74    String mDismissContentDescription;
75
76    // Static highlight that we draw at the top of each view
77    static Paint sHighlightPaint;
78
79    // Header dim, which is only used when task view hardware layers are not used
80    Paint mDimLayerPaint = new Paint();
81    PorterDuffColorFilter mDimColorFilter = new PorterDuffColorFilter(0, PorterDuff.Mode.SRC_ATOP);
82
83    boolean mLayersDisabled;
84
85    public TaskViewHeader(Context context) {
86        this(context, null);
87    }
88
89    public TaskViewHeader(Context context, AttributeSet attrs) {
90        this(context, attrs, 0);
91    }
92
93    public TaskViewHeader(Context context, AttributeSet attrs, int defStyleAttr) {
94        this(context, attrs, defStyleAttr, 0);
95    }
96
97    public TaskViewHeader(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
98        super(context, attrs, defStyleAttr, defStyleRes);
99        mConfig = RecentsConfiguration.getInstance();
100        mSsp = RecentsTaskLoader.getInstance().getSystemServicesProxy();
101        setWillNotDraw(false);
102        setClipToOutline(true);
103        setOutlineProvider(new ViewOutlineProvider() {
104            @Override
105            public void getOutline(View view, Outline outline) {
106                outline.setRect(0, 0, getMeasuredWidth(), getMeasuredHeight());
107            }
108        });
109
110        // Load the dismiss resources
111        mLightDismissDrawable = context.getDrawable(R.drawable.recents_dismiss_light);
112        mDarkDismissDrawable = context.getDrawable(R.drawable.recents_dismiss_dark);
113        mDismissContentDescription =
114                context.getString(R.string.accessibility_recents_item_will_be_dismissed);
115
116        // Configure the highlight paint
117        if (sHighlightPaint == null) {
118            sHighlightPaint = new Paint();
119            sHighlightPaint.setStyle(Paint.Style.STROKE);
120            sHighlightPaint.setStrokeWidth(mConfig.taskViewHighlightPx);
121            sHighlightPaint.setColor(mConfig.taskBarViewHighlightColor);
122            sHighlightPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.ADD));
123            sHighlightPaint.setAntiAlias(true);
124        }
125    }
126
127    @Override
128    protected void onFinishInflate() {
129        // Initialize the icon and description views
130        mApplicationIcon = (ImageView) findViewById(R.id.application_icon);
131        mActivityDescription = (TextView) findViewById(R.id.activity_description);
132        mDismissButton = (ImageView) findViewById(R.id.dismiss_task);
133        mMoveTaskButton = (ImageView) findViewById(R.id.move_task);
134
135        // Hide the backgrounds if they are ripple drawables
136        if (!Constants.DebugFlags.App.EnableTaskFiltering) {
137            if (mApplicationIcon.getBackground() instanceof RippleDrawable) {
138                mApplicationIcon.setBackground(null);
139            }
140        }
141
142        mBackgroundColorDrawable = (GradientDrawable) getContext().getDrawable(R.drawable
143                .recents_task_view_header_bg_color);
144        // Copy the ripple drawable since we are going to be manipulating it
145        mBackground = (RippleDrawable)
146                getContext().getDrawable(R.drawable.recents_task_view_header_bg);
147        mBackground = (RippleDrawable) mBackground.mutate().getConstantState().newDrawable();
148        mBackground.setColor(ColorStateList.valueOf(0));
149        mBackground.setDrawableByLayerId(mBackground.getId(0), mBackgroundColorDrawable);
150        setBackground(mBackground);
151    }
152
153    @Override
154    protected void onDraw(Canvas canvas) {
155        // Draw the highlight at the top edge (but put the bottom edge just out of view)
156        float offset = (float) Math.ceil(mConfig.taskViewHighlightPx / 2f);
157        float radius = mConfig.taskViewRoundedCornerRadiusPx;
158        int count = canvas.save(Canvas.CLIP_SAVE_FLAG);
159        canvas.clipRect(0, 0, getMeasuredWidth(), getMeasuredHeight());
160        canvas.drawRoundRect(-offset, 0f, (float) getMeasuredWidth() + offset,
161                getMeasuredHeight() + radius, radius, radius, sHighlightPaint);
162        canvas.restoreToCount(count);
163    }
164
165    @Override
166    public boolean hasOverlappingRendering() {
167        return false;
168    }
169
170    /**
171     * Sets the dim alpha, only used when we are not using hardware layers.
172     * (see RecentsConfiguration.useHardwareLayers)
173     */
174    void setDimAlpha(int alpha) {
175        mDimColorFilter.setColor(Color.argb(alpha, 0, 0, 0));
176        mDimLayerPaint.setColorFilter(mDimColorFilter);
177        if (!mLayersDisabled) {
178            setLayerType(LAYER_TYPE_HARDWARE, mDimLayerPaint);
179        }
180    }
181
182    /** Returns the secondary color for a primary color. */
183    int getSecondaryColor(int primaryColor, boolean useLightOverlayColor) {
184        int overlayColor = useLightOverlayColor ? Color.WHITE : Color.BLACK;
185        return Utilities.getColorWithOverlay(primaryColor, overlayColor, 0.8f);
186    }
187
188    /** Binds the bar view to the task */
189    public void rebindToTask(Task t) {
190        // If an activity icon is defined, then we use that as the primary icon to show in the bar,
191        // otherwise, we fall back to the application icon
192        if (t.activityIcon != null) {
193            mApplicationIcon.setImageDrawable(t.activityIcon);
194        } else if (t.applicationIcon != null) {
195            mApplicationIcon.setImageDrawable(t.applicationIcon);
196        }
197        mApplicationIcon.setContentDescription(t.contentDescription);
198        if (!mActivityDescription.getText().toString().equals(t.activityLabel)) {
199            mActivityDescription.setText(t.activityLabel);
200        }
201        mActivityDescription.setContentDescription(t.contentDescription);
202
203        // Try and apply the system ui tint
204        int existingBgColor = getBackgroundColor();
205        if (existingBgColor != t.colorPrimary) {
206            mBackgroundColorDrawable.setColor(t.colorPrimary);
207            mBackgroundColor = t.colorPrimary;
208        }
209        mCurrentPrimaryColor = t.colorPrimary;
210        mCurrentPrimaryColorIsDark = t.useLightOnPrimaryColor;
211        mActivityDescription.setTextColor(t.useLightOnPrimaryColor ?
212                mConfig.taskBarViewLightTextColor : mConfig.taskBarViewDarkTextColor);
213        mDismissButton.setImageDrawable(t.useLightOnPrimaryColor ?
214                mLightDismissDrawable : mDarkDismissDrawable);
215        mDismissButton.setContentDescription(String.format(mDismissContentDescription,
216                t.contentDescription));
217        mMoveTaskButton.setVisibility((mConfig.multiStackEnabled) ? View.VISIBLE : View.INVISIBLE);
218        if (mConfig.multiStackEnabled) {
219            updateResizeTaskBarIcon(t);
220        }
221    }
222
223    /** Updates the resize task bar button. */
224    void updateResizeTaskBarIcon(Task t) {
225        Rect display = mSsp.getWindowRect();
226        Rect taskRect = mSsp.getTaskBounds(t.key.stackId);
227        int resId = R.drawable.star;
228        if (display.equals(taskRect) || taskRect.isEmpty()) {
229            resId = R.drawable.vector_drawable_place_fullscreen;
230        } else {
231            boolean top = display.top == taskRect.top;
232            boolean bottom = display.bottom == taskRect.bottom;
233            boolean left = display.left == taskRect.left;
234            boolean right = display.right == taskRect.right;
235            if (top && bottom && left) {
236                resId = R.drawable.vector_drawable_place_left;
237            } else if (top && bottom && right) {
238                resId = R.drawable.vector_drawable_place_right;
239            } else if (top && left && right) {
240                resId = R.drawable.vector_drawable_place_top;
241            } else if (bottom && left && right) {
242                resId = R.drawable.vector_drawable_place_bottom;
243            } else if (top && right) {
244                resId = R.drawable.vector_drawable_place_top_right;
245            } else if (top && left) {
246                resId = R.drawable.vector_drawable_place_top_left;
247            } else if (bottom && right) {
248                resId = R.drawable.vector_drawable_place_bottom_right;
249            } else if (bottom && left) {
250                resId = R.drawable.vector_drawable_place_bottom_left;
251            }
252        }
253        mMoveTaskButton.setImageResource(resId);
254    }
255
256    /** Unbinds the bar view from the task */
257    void unbindFromTask() {
258        mApplicationIcon.setImageDrawable(null);
259    }
260
261    /** Animates this task bar dismiss button when launching a task. */
262    void startLaunchTaskDismissAnimation() {
263        if (mDismissButton.getVisibility() == View.VISIBLE) {
264            mDismissButton.animate().cancel();
265            mDismissButton.animate()
266                    .alpha(0f)
267                    .setStartDelay(0)
268                    .setInterpolator(mConfig.fastOutSlowInInterpolator)
269                    .setDuration(mConfig.taskViewExitToAppDuration)
270                    .start();
271        }
272    }
273
274    /** Animates this task bar if the user does not interact with the stack after a certain time. */
275    void startNoUserInteractionAnimation() {
276        if (mDismissButton.getVisibility() != View.VISIBLE) {
277            mDismissButton.setVisibility(View.VISIBLE);
278            mDismissButton.setAlpha(0f);
279            mDismissButton.animate()
280                    .alpha(1f)
281                    .setStartDelay(0)
282                    .setInterpolator(mConfig.fastOutLinearInInterpolator)
283                    .setDuration(mConfig.taskViewEnterFromAppDuration)
284                    .start();
285        }
286    }
287
288    /** Mark this task view that the user does has not interacted with the stack after a certain time. */
289    void setNoUserInteractionState() {
290        if (mDismissButton.getVisibility() != View.VISIBLE) {
291            mDismissButton.animate().cancel();
292            mDismissButton.setVisibility(View.VISIBLE);
293            mDismissButton.setAlpha(1f);
294        }
295    }
296
297    /** Resets the state tracking that the user has not interacted with the stack after a certain time. */
298    void resetNoUserInteractionState() {
299        mDismissButton.setVisibility(View.INVISIBLE);
300    }
301
302    @Override
303    protected int[] onCreateDrawableState(int extraSpace) {
304
305        // Don't forward our state to the drawable - we do it manually in onTaskViewFocusChanged.
306        // This is to prevent layer trashing when the view is pressed.
307        return new int[] {};
308    }
309
310    @Override
311    protected void dispatchDraw(Canvas canvas) {
312        super.dispatchDraw(canvas);
313        if (mLayersDisabled) {
314            mLayersDisabled = false;
315            postOnAnimation(new Runnable() {
316                @Override
317                public void run() {
318                    mLayersDisabled = false;
319                    setLayerType(LAYER_TYPE_HARDWARE, mDimLayerPaint);
320                }
321            });
322        }
323    }
324
325    public void disableLayersForOneFrame() {
326        mLayersDisabled = true;
327
328        // Disable layer for a frame so we can draw our first frame faster.
329        setLayerType(LAYER_TYPE_NONE, null);
330    }
331
332    /** Notifies the associated TaskView has been focused. */
333    void onTaskViewFocusChanged(boolean focused, boolean animateFocusedState) {
334        // If we are not animating the visible state, just return
335        if (!animateFocusedState) return;
336
337        boolean isRunning = false;
338        if (mFocusAnimator != null) {
339            isRunning = mFocusAnimator.isRunning();
340            Utilities.cancelAnimationWithoutCallbacks(mFocusAnimator);
341        }
342
343        if (focused) {
344            int currentColor = mBackgroundColor;
345            int secondaryColor = getSecondaryColor(mCurrentPrimaryColor, mCurrentPrimaryColorIsDark);
346            int[][] states = new int[][] {
347                    new int[] {},
348                    new int[] { android.R.attr.state_enabled },
349                    new int[] { android.R.attr.state_pressed }
350            };
351            int[] newStates = new int[]{
352                    0,
353                    android.R.attr.state_enabled,
354                    android.R.attr.state_pressed
355            };
356            int[] colors = new int[] {
357                    currentColor,
358                    secondaryColor,
359                    secondaryColor
360            };
361            mBackground.setColor(new ColorStateList(states, colors));
362            mBackground.setState(newStates);
363            // Pulse the background color
364            int lightPrimaryColor = getSecondaryColor(mCurrentPrimaryColor, mCurrentPrimaryColorIsDark);
365            ValueAnimator backgroundColor = ValueAnimator.ofObject(new ArgbEvaluator(),
366                    currentColor, lightPrimaryColor);
367            backgroundColor.addListener(new AnimatorListenerAdapter() {
368                @Override
369                public void onAnimationStart(Animator animation) {
370                    mBackground.setState(new int[]{});
371                }
372            });
373            backgroundColor.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
374                @Override
375                public void onAnimationUpdate(ValueAnimator animation) {
376                    int color = (int) animation.getAnimatedValue();
377                    mBackgroundColorDrawable.setColor(color);
378                    mBackgroundColor = color;
379                }
380            });
381            backgroundColor.setRepeatCount(ValueAnimator.INFINITE);
382            backgroundColor.setRepeatMode(ValueAnimator.REVERSE);
383            // Pulse the translation
384            ObjectAnimator translation = ObjectAnimator.ofFloat(this, "translationZ", 15f);
385            translation.setRepeatCount(ValueAnimator.INFINITE);
386            translation.setRepeatMode(ValueAnimator.REVERSE);
387
388            mFocusAnimator = new AnimatorSet();
389            mFocusAnimator.playTogether(backgroundColor, translation);
390            mFocusAnimator.setStartDelay(150);
391            mFocusAnimator.setDuration(750);
392            mFocusAnimator.start();
393        } else {
394            if (isRunning) {
395                // Restore the background color
396                int currentColor = mBackgroundColor;
397                ValueAnimator backgroundColor = ValueAnimator.ofObject(new ArgbEvaluator(),
398                        currentColor, mCurrentPrimaryColor);
399                backgroundColor.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
400                    @Override
401                    public void onAnimationUpdate(ValueAnimator animation) {
402                        int color = (int) animation.getAnimatedValue();
403                        mBackgroundColorDrawable.setColor(color);
404                        mBackgroundColor = color;
405                    }
406                });
407                // Restore the translation
408                ObjectAnimator translation = ObjectAnimator.ofFloat(this, "translationZ", 0f);
409
410                mFocusAnimator = new AnimatorSet();
411                mFocusAnimator.playTogether(backgroundColor, translation);
412                mFocusAnimator.setDuration(150);
413                mFocusAnimator.start();
414            } else {
415                mBackground.setState(new int[] {});
416                setTranslationZ(0f);
417            }
418        }
419    }
420}
421