/* * Copyright (C) 2013 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.systemui.statusbar.phone; import android.app.ActivityManager; import android.content.Context; import android.content.res.Resources; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.ColorFilter; import android.graphics.Paint; import android.graphics.PixelFormat; import android.graphics.PorterDuff; import android.graphics.PorterDuffColorFilter; import android.graphics.Rect; import android.graphics.PorterDuff.Mode; import android.graphics.drawable.Drawable; import android.os.SystemClock; import android.util.Log; import android.view.View; import com.android.settingslib.Utils; import com.android.systemui.Interpolators; import com.android.systemui.R; public class BarTransitions { private static final boolean DEBUG = false; private static final boolean DEBUG_COLORS = false; public static final int MODE_OPAQUE = 0; public static final int MODE_SEMI_TRANSPARENT = 1; public static final int MODE_TRANSLUCENT = 2; public static final int MODE_LIGHTS_OUT = 3; public static final int MODE_TRANSPARENT = 4; public static final int MODE_WARNING = 5; public static final int MODE_LIGHTS_OUT_TRANSPARENT = 6; public static final int LIGHTS_IN_DURATION = 250; public static final int LIGHTS_OUT_DURATION = 1500; public static final int BACKGROUND_DURATION = 200; private final String mTag; private final View mView; private final BarBackgroundDrawable mBarBackground; private int mMode; private boolean mAlwaysOpaque = false; public BarTransitions(View view, int gradientResourceId) { mTag = "BarTransitions." + view.getClass().getSimpleName(); mView = view; mBarBackground = new BarBackgroundDrawable(mView.getContext(), gradientResourceId); mView.setBackground(mBarBackground); } public int getMode() { return mMode; } public void setAutoDim(boolean autoDim) { // Default is don't care. } /** * @param alwaysOpaque if {@code true}, the bar's background will always be opaque, regardless * of what mode it is currently set to. */ public void setAlwaysOpaque(boolean alwaysOpaque) { mAlwaysOpaque = alwaysOpaque; } public boolean isAlwaysOpaque() { // Low-end devices do not support translucent modes, fallback to opaque return mAlwaysOpaque; } public void transitionTo(int mode, boolean animate) { if (isAlwaysOpaque() && (mode == MODE_SEMI_TRANSPARENT || mode == MODE_TRANSLUCENT || mode == MODE_TRANSPARENT)) { mode = MODE_OPAQUE; } if (isAlwaysOpaque() && (mode == MODE_LIGHTS_OUT_TRANSPARENT)) { mode = MODE_LIGHTS_OUT; } if (mMode == mode) return; int oldMode = mMode; mMode = mode; if (DEBUG) Log.d(mTag, String.format("%s -> %s animate=%s", modeToString(oldMode), modeToString(mode), animate)); onTransition(oldMode, mMode, animate); } protected void onTransition(int oldMode, int newMode, boolean animate) { applyModeBackground(oldMode, newMode, animate); } protected void applyModeBackground(int oldMode, int newMode, boolean animate) { if (DEBUG) Log.d(mTag, String.format("applyModeBackground oldMode=%s newMode=%s animate=%s", modeToString(oldMode), modeToString(newMode), animate)); mBarBackground.applyModeBackground(oldMode, newMode, animate); } public static String modeToString(int mode) { if (mode == MODE_OPAQUE) return "MODE_OPAQUE"; if (mode == MODE_SEMI_TRANSPARENT) return "MODE_SEMI_TRANSPARENT"; if (mode == MODE_TRANSLUCENT) return "MODE_TRANSLUCENT"; if (mode == MODE_LIGHTS_OUT) return "MODE_LIGHTS_OUT"; if (mode == MODE_TRANSPARENT) return "MODE_TRANSPARENT"; if (mode == MODE_WARNING) return "MODE_WARNING"; if (mode == MODE_LIGHTS_OUT_TRANSPARENT) return "MODE_LIGHTS_OUT_TRANSPARENT"; throw new IllegalArgumentException("Unknown mode " + mode); } public void finishAnimations() { mBarBackground.finishAnimation(); } protected boolean isLightsOut(int mode) { return mode == MODE_LIGHTS_OUT || mode == MODE_LIGHTS_OUT_TRANSPARENT; } private static class BarBackgroundDrawable extends Drawable { private final int mOpaque; private final int mSemiTransparent; private final int mTransparent; private final int mWarning; private final Drawable mGradient; private int mMode = -1; private boolean mAnimating; private long mStartTime; private long mEndTime; private int mGradientAlpha; private int mColor; private PorterDuffColorFilter mTintFilter; private Paint mPaint = new Paint(); private int mGradientAlphaStart; private int mColorStart; public BarBackgroundDrawable(Context context, int gradientResourceId) { final Resources res = context.getResources(); if (DEBUG_COLORS) { mOpaque = 0xff0000ff; mSemiTransparent = 0x7f0000ff; mTransparent = 0x2f0000ff; mWarning = 0xffff0000; } else { mOpaque = context.getColor(R.color.system_bar_background_opaque); mSemiTransparent = context.getColor( com.android.internal.R.color.system_bar_background_semi_transparent); mTransparent = context.getColor(R.color.system_bar_background_transparent); mWarning = Utils.getColorAttr(context, android.R.attr.colorError); } mGradient = context.getDrawable(gradientResourceId); } @Override public void setAlpha(int alpha) { // noop } @Override public void setColorFilter(ColorFilter colorFilter) { // noop } @Override public void setTint(int color) { if (mTintFilter == null) { mTintFilter = new PorterDuffColorFilter(color, PorterDuff.Mode.SRC_IN); } else { mTintFilter.setColor(color); } invalidateSelf(); } @Override public void setTintMode(Mode tintMode) { if (mTintFilter == null) { mTintFilter = new PorterDuffColorFilter(0, tintMode); } else { mTintFilter.setMode(tintMode); } invalidateSelf(); } @Override protected void onBoundsChange(Rect bounds) { super.onBoundsChange(bounds); mGradient.setBounds(bounds); } public void applyModeBackground(int oldMode, int newMode, boolean animate) { if (mMode == newMode) return; mMode = newMode; mAnimating = animate; if (animate) { long now = SystemClock.elapsedRealtime(); mStartTime = now; mEndTime = now + BACKGROUND_DURATION; mGradientAlphaStart = mGradientAlpha; mColorStart = mColor; } invalidateSelf(); } @Override public int getOpacity() { return PixelFormat.TRANSLUCENT; } public void finishAnimation() { if (mAnimating) { mAnimating = false; invalidateSelf(); } } @Override public void draw(Canvas canvas) { int targetGradientAlpha = 0, targetColor = 0; if (mMode == MODE_WARNING) { targetColor = mWarning; } else if (mMode == MODE_TRANSLUCENT) { targetColor = mSemiTransparent; } else if (mMode == MODE_SEMI_TRANSPARENT) { targetColor = mSemiTransparent; } else if (mMode == MODE_TRANSPARENT || mMode == MODE_LIGHTS_OUT_TRANSPARENT) { targetColor = mTransparent; } else { targetColor = mOpaque; } if (!mAnimating) { mColor = targetColor; mGradientAlpha = targetGradientAlpha; } else { final long now = SystemClock.elapsedRealtime(); if (now >= mEndTime) { mAnimating = false; mColor = targetColor; mGradientAlpha = targetGradientAlpha; } else { final float t = (now - mStartTime) / (float)(mEndTime - mStartTime); final float v = Math.max(0, Math.min( Interpolators.LINEAR.getInterpolation(t), 1)); mGradientAlpha = (int)(v * targetGradientAlpha + mGradientAlphaStart * (1 - v)); mColor = Color.argb( (int)(v * Color.alpha(targetColor) + Color.alpha(mColorStart) * (1 - v)), (int)(v * Color.red(targetColor) + Color.red(mColorStart) * (1 - v)), (int)(v * Color.green(targetColor) + Color.green(mColorStart) * (1 - v)), (int)(v * Color.blue(targetColor) + Color.blue(mColorStart) * (1 - v))); } } if (mGradientAlpha > 0) { mGradient.setAlpha(mGradientAlpha); mGradient.draw(canvas); } if (Color.alpha(mColor) > 0) { mPaint.setColor(mColor); if (mTintFilter != null) { mPaint.setColorFilter(mTintFilter); } canvas.drawPaint(mPaint); } if (mAnimating) { invalidateSelf(); // keep going } } } }