Adding spring effect for folder icons when dragging similar to adaptive icons (e29897f5) · Commits · e / os / android_packages_apps_Trebuchet

src/com/android/launcher3/Launcher.java

+11 −9

Original line number	Diff line number	Diff line
		@@ -1465,21 +1465,23 @@ public class Launcher extends BaseActivity
		mWorkspace.addInScreen(view, info);
		} else {
		// Adding a shortcut to a Folder.
		final long folderIconId = container;
		FolderIcon folderIcon = (FolderIcon) mWorkspace.getFirstMatch(new ItemOperator() {
		@Override
		public boolean evaluate(ItemInfo info, View view) {
		return info != null && info.id == folderIconId;
		}
		});

		FolderIcon folderIcon = findFolderIcon(container);
		if (folderIcon != null) {
		FolderInfo folderInfo = (FolderInfo) folderIcon.getTag();
		folderInfo.add(info, args.rank, false);
		} else {
		Log.e(TAG, "Could not find folder with id " + folderIconId + " to add shortcut.");
		Log.e(TAG, "Could not find folder with id " + container + " to add shortcut.");
		}
		}
		}

		public FolderIcon findFolderIcon(final long folderIconId) {
		return (FolderIcon) mWorkspace.getFirstMatch(new ItemOperator() {
		@Override
		public boolean evaluate(ItemInfo info, View view) {
		return info != null && info.id == folderIconId;
		}
		});
		}

		/**

src/com/android/launcher3/dragndrop/DragView.java

+37 −18

Original line number	Diff line number	Diff line
		@@ -78,6 +78,7 @@ public class DragView extends View {

		@Thunk static float sDragAlpha = 1f;

		private boolean mDrawBitmap = true;
		private Bitmap mBitmap;
		private Bitmap mCrossFadeBitmap;
		@Thunk Paint mPaint;
		@@ -187,7 +188,8 @@ public class DragView extends View {
		}

		/**
		* Initialize {@code #mIconDrawable} only if the icon type is app icon (not shortcut or folder).
		* Initialize {@code #mIconDrawable} if the item can be represented using
		* an {@link AdaptiveIconDrawable} or {@link FolderAdaptiveIcon}.
		*/
		@TargetApi(Build.VERSION_CODES.O)
		public void setItemInfo(final ItemInfo info) {
		@@ -195,7 +197,8 @@ public class DragView extends View {
		return;
		}
		if (info.itemType != LauncherSettings.Favorites.ITEM_TYPE_APPLICATION &&
		info.itemType != LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT) {
		info.itemType != LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT &&
		info.itemType != LauncherSettings.Favorites.ITEM_TYPE_FOLDER) {
		return;
		}
		// Load the adaptive icon on a background thread and add the view in ui thread.
		@@ -205,7 +208,7 @@ public class DragView extends View {
		public void run() {
		LauncherAppState appState = LauncherAppState.getInstance(mLauncher);
		Object[] outObj = new Object[1];
		Drawable dr = getFullDrawable(info, appState, outObj);
		final Drawable dr = getFullDrawable(info, appState, outObj);

		if (dr instanceof AdaptiveIconDrawable) {
		int w = mBitmap.getWidth();
		@@ -249,6 +252,9 @@ public class DragView extends View {
		// Assign the variable on the UI thread to avoid race conditions.
		mScaledMaskPath = mask;

		// Do not draw the background in case of folder as its translucent
		mDrawBitmap = !(dr instanceof FolderAdaptiveIcon);

		if (info.isDisabled()) {
		FastBitmapDrawable d = new FastBitmapDrawable(null);
		d.setIsDisabled(true);
		@@ -323,6 +329,14 @@ public class DragView extends View {
		return sm.getShortcutIconDrawable(si.get(0),
		appState.getInvariantDeviceProfile().fillResIconDpi);
		}
		} else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER) {
		FolderAdaptiveIcon icon = FolderAdaptiveIcon.createFolderAdaptiveIcon(
		mLauncher, info.id, new Point(mBitmap.getWidth(), mBitmap.getHeight()));
		if (icon == null) {
		return null;
		}
		outObj[0] = icon;
		return icon;
		} else {
		return null;
		}
		@@ -350,6 +364,8 @@ public class DragView extends View {
		float insetFraction = (iconSize - badgeSize) / iconSize;
		return new InsetDrawable(new FastBitmapDrawable(badge),
		insetFraction, insetFraction, 0, 0);
		} else if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_FOLDER) {
		return ((FolderAdaptiveIcon) obj).getBadge();
		} else {
		return mLauncher.getPackageManager()
		.getUserBadgedIcon(new FixedSizeEmptyDrawable(iconSize), info.user);
		@@ -405,6 +421,8 @@ public class DragView extends View {
		@Override
		protected void onDraw(Canvas canvas) {
		mHasDrawn = true;

		if (mDrawBitmap) {
		// Always draw the bitmap to mask anti aliasing due to clipPath
		boolean crossFade = mCrossFadeProgress > 0 && mCrossFadeBitmap != null;
		if (crossFade) {
		@@ -421,6 +439,7 @@ public class DragView extends View {
		canvas.drawBitmap(mCrossFadeBitmap, 0.0f, 0.0f, mPaint);
		canvas.restoreToCount(saveCount);
		}
		}

		if (mScaledMaskPath != null) {
		int cnt = canvas.save();

src/com/android/launcher3/dragndrop/FolderAdaptiveIcon.java

0 → 100644

+175 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2017 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.dragndrop;

		import android.annotation.TargetApi;
		import android.graphics.Bitmap;
		import android.graphics.Canvas;
		import android.graphics.ColorFilter;
		import android.graphics.Matrix;
		import android.graphics.Paint;
		import android.graphics.Path;
		import android.graphics.PixelFormat;
		import android.graphics.Point;
		import android.graphics.drawable.AdaptiveIconDrawable;
		import android.graphics.drawable.ColorDrawable;
		import android.graphics.drawable.Drawable;
		import android.os.Build;
		import android.util.Log;

		import com.android.launcher3.Launcher;
		import com.android.launcher3.MainThreadExecutor;
		import com.android.launcher3.R;
		import com.android.launcher3.folder.FolderIcon;
		import com.android.launcher3.folder.PreviewBackground;
		import com.android.launcher3.util.Preconditions;

		import java.util.concurrent.Callable;

		/**
		* {@link AdaptiveIconDrawable} representation of a {@link FolderIcon}
		*/
		@TargetApi(Build.VERSION_CODES.O)
		public class FolderAdaptiveIcon extends AdaptiveIconDrawable {
		private static final String TAG = "FolderAdaptiveIcon";

		private final Drawable mBadge;
		private final Path mMask;

		private FolderAdaptiveIcon(Drawable bg, Drawable fg, Drawable badge, Path mask) {
		super(bg, fg);
		mBadge = badge;
		mMask = mask;
		}

		@Override
		public Path getIconMask() {
		return mMask;
		}

		public Drawable getBadge() {
		return mBadge;
		}

		public static FolderAdaptiveIcon createFolderAdaptiveIcon(
		final Launcher launcher, final long folderId, Point dragViewSize) {
		Preconditions.assertNonUiThread();
		int margin = launcher.getResources()
		.getDimensionPixelSize(R.dimen.blur_size_medium_outline);

		// Allocate various bitmaps on the background thread, because why not!
		final Bitmap badge = Bitmap.createBitmap(
		dragViewSize.x - margin, dragViewSize.y - margin, Bitmap.Config.ARGB_8888);

		// The bitmap for the preview is generated larger than needed to allow for the spring effect
		float sizeScaleFactor = 1 + 2 * AdaptiveIconDrawable.getExtraInsetFraction();
		final Bitmap preview = Bitmap.createBitmap(
		(int) (dragViewSize.x * sizeScaleFactor), (int) (dragViewSize.y * sizeScaleFactor),
		Bitmap.Config.ARGB_8888);

		// Create the actual drawable on the UI thread to avoid race conditions with
		// FolderIcon draw pass
		try {
		return new MainThreadExecutor().submit(new Callable<FolderAdaptiveIcon>() {
		@Override
		public FolderAdaptiveIcon call() throws Exception {
		FolderIcon icon = launcher.findFolderIcon(folderId);
		return icon == null ? null : createDrawableOnUiThread(icon, badge, preview);
		}
		}).get();
		} catch (Exception e) {
		Log.e(TAG, "Unable to create folder icon", e);
		return null;
		}
		}

		/**
		* Initializes various bitmaps on the UI thread and returns the final drawable.
		*/
		private static FolderAdaptiveIcon createDrawableOnUiThread(FolderIcon icon,
		Bitmap badgeBitmap, Bitmap previewBitmap) {
		Preconditions.assertUIThread();
		float margin = icon.getResources().getDimension(R.dimen.blur_size_medium_outline) / 2;

		Canvas c = new Canvas();
		PreviewBackground bg = icon.getFolderBackground();

		// Initialize badge
		c.setBitmap(badgeBitmap);
		bg.drawShadow(c);
		bg.drawBackgroundStroke(c);
		icon.drawBadge(c);

		// Initialize preview
		float shiftFactor = AdaptiveIconDrawable.getExtraInsetFraction() /
		(1 + 2 * AdaptiveIconDrawable.getExtraInsetFraction());
		float previewShiftX = shiftFactor * previewBitmap.getWidth();
		float previewShiftY = shiftFactor * previewBitmap.getHeight();

		c.setBitmap(previewBitmap);
		c.translate(previewShiftX, previewShiftY);
		icon.getPreviewItemManager().draw(c);
		c.setBitmap(null);

		// Initialize mask
		Path mask = new Path();
		Matrix m = new Matrix();
		m.setTranslate(margin, margin);
		bg.getClipPath().transform(m, mask);

		ShiftedBitmapDrawable badge = new ShiftedBitmapDrawable(badgeBitmap, margin, margin);
		ShiftedBitmapDrawable foreground = new ShiftedBitmapDrawable(previewBitmap,
		margin - previewShiftX, margin - previewShiftY);

		return new FolderAdaptiveIcon(new ColorDrawable(bg.getBgColor()), foreground, badge, mask);
		}

		/**
		* A simple drawable which draws a bitmap at a fixed position irrespective of the bounds
		*/
		private static class ShiftedBitmapDrawable extends Drawable {

		private final Paint mPaint = new Paint(Paint.FILTER_BITMAP_FLAG);
		private final Bitmap mBitmap;
		private final float mShiftX;
		private final float mShiftY;

		ShiftedBitmapDrawable(Bitmap bitmap, float shiftX, float shiftY) {
		mBitmap = bitmap;
		mShiftX = shiftX;
		mShiftY = shiftY;
		}

		@Override
		public void draw(Canvas canvas) {
		canvas.drawBitmap(mBitmap, mShiftX, mShiftY, mPaint);
		}

		@Override
		public void setAlpha(int i) { }

		@Override
		public void setColorFilter(ColorFilter colorFilter) {
		mPaint.setColorFilter(colorFilter);
		}

		@Override
		public int getOpacity() {
		return PixelFormat.TRANSLUCENT;
		}
		}
		}

src/com/android/launcher3/folder/FolderIcon.java

+13 −4

Original line number	Diff line number	Diff line
		@@ -440,6 +440,14 @@ public class FolderIcon extends FrameLayout implements FolderListener {
		invalidate();
		}

		public PreviewBackground getFolderBackground() {
		return mBackground;
		}

		public PreviewItemManager getPreviewItemManager() {
		return mPreviewItemManager;
		}

		@Override
		protected void dispatchDraw(Canvas canvas) {
		super.dispatchDraw(canvas);
		@@ -463,14 +471,11 @@ public class FolderIcon extends FrameLayout implements FolderListener {
		} else {
		saveCount = canvas.save(Canvas.CLIP_SAVE_FLAG);
		if (mPreviewLayoutRule.clipToBackground()) {
		mBackground.clipCanvasSoftware(canvas, Region.Op.INTERSECT);
		canvas.clipPath(mBackground.getClipPath(), Region.Op.INTERSECT);
		}
		}

		// The items are drawn in coordinates relative to the preview offset
		canvas.translate(mBackground.basePreviewOffsetX, mBackground.basePreviewOffsetY);
		mPreviewItemManager.draw(canvas);
		canvas.translate(-mBackground.basePreviewOffsetX, -mBackground.basePreviewOffsetY);

		if (mPreviewLayoutRule.clipToBackground() && canvas.isHardwareAccelerated()) {
		mBackground.clipCanvasHardware(canvas);
		@@ -481,6 +486,10 @@ public class FolderIcon extends FrameLayout implements FolderListener {
		mBackground.drawBackgroundStroke(canvas);
		}

		drawBadge(canvas);
		}

		public void drawBadge(Canvas canvas) {
		if ((mBadgeInfo != null && mBadgeInfo.hasBadge()) \|\| mBadgeScale > 0) {
		int offsetX = mBackground.getOffsetX();
		int offsetY = mBackground.getOffsetY();

src/com/android/launcher3/folder/PreviewBackground.java

+15 −7

Original line number	Diff line number	Diff line
		@@ -195,19 +195,28 @@ public class PreviewBackground {
		invalidate();
		}

		public int getBgColor() {
		int alpha = (int) Math.min(MAX_BG_OPACITY, BG_OPACITY * mColorMultiplier);
		return ColorUtils.setAlphaComponent(mBgColor, alpha);
		}

		public void drawBackground(Canvas canvas) {
		mPaint.setStyle(Paint.Style.FILL);
		int alpha = (int) Math.min(MAX_BG_OPACITY, BG_OPACITY * mColorMultiplier);
		mPaint.setColor(ColorUtils.setAlphaComponent(mBgColor, alpha));
		mPaint.setColor(getBgColor());

		drawCircle(canvas, 0 /* deltaRadius */);

		// Draw shadow.
		drawShadow(canvas);
		}

		public void drawShadow(Canvas canvas) {
		if (mShadowShader == null) {
		return;
		}

		float radius = getScaledRadius();
		float shadowRadius = radius + mStrokeWidth;
		mPaint.setStyle(Paint.Style.FILL);
		mPaint.setColor(Color.BLACK);
		int offsetX = getOffsetX();
		int offsetY = getOffsetY();
		@@ -219,7 +228,7 @@ public class PreviewBackground {

		} else {
		saveCount = canvas.save(Canvas.CLIP_SAVE_FLAG);
		clipCanvasSoftware(canvas, Region.Op.DIFFERENCE);
		canvas.clipPath(getClipPath(), Region.Op.DIFFERENCE);
		}

		mShaderMatrix.setScale(shadowRadius, shadowRadius);
		@@ -295,12 +304,11 @@ public class PreviewBackground {
		radius - deltaRadius, mPaint);
		}

		// It is the callers responsibility to save and restore the canvas layers.
		void clipCanvasSoftware(Canvas canvas, Region.Op op) {
		public Path getClipPath() {
		mPath.reset();
		float r = getScaledRadius();
		mPath.addCircle(r + getOffsetX(), r + getOffsetY(), r, Path.Direction.CW);
		canvas.clipPath(mPath, op);
		return mPath;
		}

		// It is the callers responsibility to save and restore the canvas layers.