Keyguard: smooth background change. (b3c0350c) · Commits · e / os / android_frameworks_base

packages/Keyguard/src/com/android/keyguard/KeyguardViewManager.java

+65 −24

Original line number	Diff line number	Diff line
		@@ -19,6 +19,8 @@ package com.android.keyguard;
		import android.app.PendingIntent;
		import android.graphics.Bitmap;
		import android.graphics.drawable.BitmapDrawable;
		import android.graphics.drawable.ColorDrawable;
		import android.graphics.drawable.TransitionDrawable;
		import com.android.internal.policy.IKeyguardShowCallback;
		import com.android.internal.widget.LockPatternUtils;

		@@ -174,19 +176,7 @@ public class KeyguardViewManager {
		private final Drawable mBackgroundDrawable = new Drawable() {
		@Override
		public void draw(Canvas canvas) {
		if (mCustomBackground != null) {
		final Rect bounds = mCustomBackground.getBounds();
		final int vWidth = getWidth();
		final int vHeight = getHeight();

		final int restore = canvas.save();
		canvas.translate(-(bounds.width() - vWidth) / 2,
		-(bounds.height() - vHeight) / 2);
		mCustomBackground.draw(canvas);
		canvas.restoreToCount(restore);
		} else {
		canvas.drawColor(BACKGROUND_COLOR, PorterDuff.Mode.SRC);
		}
		drawToCanvas(canvas, mCustomBackground);
		}

		@Override
		@@ -203,26 +193,77 @@ public class KeyguardViewManager {
		}
		};

		private TransitionDrawable mTransitionBackground = null;

		public ViewManagerHost(Context context) {
		super(context);
		setBackground(mBackgroundDrawable);
		}

		public void drawToCanvas(Canvas canvas, Drawable drawable) {
		if (drawable != null) {
		final Rect bounds = drawable.getBounds();
		final int vWidth = getWidth();
		final int vHeight = getHeight();

		final int restore = canvas.save();
		canvas.translate(-(bounds.width() - vWidth) / 2,
		-(bounds.height() - vHeight) / 2);
		drawable.draw(canvas);
		canvas.restoreToCount(restore);
		} else {
		canvas.drawColor(BACKGROUND_COLOR, PorterDuff.Mode.SRC);
		}
		}

		public void setCustomBackground(Drawable d) {
		if (!ActivityManager.isHighEndGfx() \|\| !mScreenOn) {
		mCustomBackground = d;
		if (d != null) {
		d.setColorFilter(BACKGROUND_COLOR, PorterDuff.Mode.SRC_OVER);
		}
		computeCustomBackgroundBounds();
		computeCustomBackgroundBounds(mCustomBackground);
		setBackground(mBackgroundDrawable);
		} else {
		Drawable old = mCustomBackground;
		if (old == null && d == null) {
		return;
		}
		boolean newIsNull = false;
		if (old == null) {
		old = new ColorDrawable(BACKGROUND_COLOR);
		}
		if (d == null) {
		d = new ColorDrawable(BACKGROUND_COLOR);
		newIsNull = true;
		} else {
		d.setColorFilter(BACKGROUND_COLOR, PorterDuff.Mode.SRC_OVER);
		}
		computeCustomBackgroundBounds(d);
		Bitmap b = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
		Canvas c = new Canvas(b);
		drawToCanvas(c, d);

		Drawable dd = new BitmapDrawable(mContext.getResources(), b);

		mTransitionBackground = new TransitionDrawable(new Drawable[] {old, dd});
		mTransitionBackground.setCrossFadeEnabled(true);
		setBackground(mTransitionBackground);

		mTransitionBackground.startTransition(200);

		mCustomBackground = newIsNull ? null : dd;

		}
		invalidate();
		}

		private void computeCustomBackgroundBounds() {
		if (mCustomBackground == null) return; // Nothing to do
		private void computeCustomBackgroundBounds(Drawable background) {
		if (background == null) return; // Nothing to do
		if (!isLaidOut()) return; // We'll do this later

		final int bgWidth = mCustomBackground.getIntrinsicWidth();
		final int bgHeight = mCustomBackground.getIntrinsicHeight();
		final int bgWidth = background.getIntrinsicWidth();
		final int bgHeight = background.getIntrinsicHeight();
		final int vWidth = getWidth();
		final int vHeight = getHeight();

		@@ -230,16 +271,16 @@ public class KeyguardViewManager {
		final float vAspect = (float) vWidth / vHeight;

		if (bgAspect > vAspect) {
		mCustomBackground.setBounds(0, 0, (int) (vHeight * bgAspect), vHeight);
		background.setBounds(0, 0, (int) (vHeight * bgAspect), vHeight);
		} else {
		mCustomBackground.setBounds(0, 0, vWidth, (int) (vWidth / bgAspect));
		background.setBounds(0, 0, vWidth, (int) (vWidth / bgAspect));
		}
		}

		@Override
		protected void onSizeChanged(int w, int h, int oldw, int oldh) {
		super.onSizeChanged(w, h, oldw, oldh);
		computeCustomBackgroundBounds();
		computeCustomBackgroundBounds(mCustomBackground);
		}

		@Override