Pierre Barbier de Reuille
ad41a56166
The behavior of the framework when we try to do so is undefined. In our case, it almost work, but no clipping is applied, which is a problem for Android S (before that, widget couldn't use clipping in the first place). Instead of drawing the view through a drawable, this really add the view and adds also a badge ImageView for badges instead of drawing them indirectly. Note that, temporarily, we have to re-allow drawing the view after it has been attached, but the underlying framework bug being fixed, this should be fine (I tested it and it really seems to be). Bug: 183609936 Test: Using hand designed app (see bug) Change-Id: I929ef8fc81c98c49406f2d940cd5efc28319886d
216 lines
9.4 KiB
Java
216 lines
9.4 KiB
Java
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.widget;
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import android.graphics.Bitmap;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Point;
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import android.graphics.Rect;
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import android.graphics.drawable.Drawable;
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import android.view.View;
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import android.widget.RemoteViews;
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import androidx.annotation.Nullable;
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import com.android.launcher3.DeviceProfile;
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import com.android.launcher3.DragSource;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.LauncherAppState;
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import com.android.launcher3.PendingAddItemInfo;
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import com.android.launcher3.R;
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import com.android.launcher3.dragndrop.AppWidgetHostViewDrawable;
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import com.android.launcher3.dragndrop.DragOptions;
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import com.android.launcher3.dragndrop.DraggableView;
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import com.android.launcher3.graphics.DragPreviewProvider;
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import com.android.launcher3.icons.FastBitmapDrawable;
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import com.android.launcher3.icons.LauncherIcons;
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import com.android.launcher3.icons.RoundDrawableWrapper;
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import com.android.launcher3.widget.dragndrop.AppWidgetHostViewDragListener;
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/**
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* Extension of {@link DragPreviewProvider} with logic specific to pending widgets/shortcuts
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* dragged from the widget tray.
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*/
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public class PendingItemDragHelper extends DragPreviewProvider {
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private static final float MAX_WIDGET_SCALE = 1.25f;
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private final PendingAddItemInfo mAddInfo;
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private int[] mEstimatedCellSize;
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@Nullable private RemoteViews mRemoteViewsPreview;
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@Nullable private LauncherAppWidgetHostView mAppWidgetHostViewPreview;
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private final float mEnforcedRoundedCornersForWidget;
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public PendingItemDragHelper(View view) {
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super(view);
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mAddInfo = (PendingAddItemInfo) view.getTag();
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mEnforcedRoundedCornersForWidget = RoundedCornerEnforcement.computeEnforcedRadius(
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view.getContext());
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}
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/**
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* Sets a {@link RemoteViews} which shows an app widget preview provided by app developers in
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* the pin widget flow.
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*/
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public void setRemoteViewsPreview(@Nullable RemoteViews remoteViewsPreview) {
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mRemoteViewsPreview = remoteViewsPreview;
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}
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/** Sets a {@link LauncherAppWidgetHostView} which shows a preview layout of an app widget. */
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public void setAppWidgetHostViewPreview(
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@Nullable LauncherAppWidgetHostView appWidgetHostViewPreview) {
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mAppWidgetHostViewPreview = appWidgetHostViewPreview;
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}
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/**
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* Starts the drag for the pending item associated with the view.
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*
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* @param previewBounds The bounds where the image was displayed,
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* {@link WidgetImageView#getBitmapBounds()}
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* @param previewBitmapWidth The actual width of the bitmap displayed in the view.
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* @param previewViewWidth The width of {@link WidgetImageView} displaying the preview
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* @param screenPos Position of {@link WidgetImageView} on the screen
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*/
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public void startDrag(Rect previewBounds, int previewBitmapWidth, int previewViewWidth,
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Point screenPos, DragSource source, DragOptions options) {
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final Launcher launcher = Launcher.getLauncher(mView.getContext());
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LauncherAppState app = LauncherAppState.getInstance(launcher);
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Drawable preview = null;
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final float scale;
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final Point dragOffset;
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final Rect dragRegion;
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mEstimatedCellSize = launcher.getWorkspace().estimateItemSize(mAddInfo);
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DraggableView draggableView;
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if (mAddInfo instanceof PendingAddWidgetInfo) {
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PendingAddWidgetInfo createWidgetInfo = (PendingAddWidgetInfo) mAddInfo;
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int maxWidth = Math.min((int) (previewBitmapWidth * MAX_WIDGET_SCALE), mEstimatedCellSize[0]);
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int[] previewSizeBeforeScale = new int[1];
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if (mRemoteViewsPreview != null) {
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preview = new FastBitmapDrawable(
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WidgetCell.generateFromRemoteViews(launcher, mRemoteViewsPreview,
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createWidgetInfo.info, maxWidth, previewSizeBeforeScale));
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}
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if (mAppWidgetHostViewPreview != null) {
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preview = new AppWidgetHostViewDrawable(mAppWidgetHostViewPreview);
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previewSizeBeforeScale[0] = mAppWidgetHostViewPreview.getMeasuredWidth();
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launcher.getDragController()
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.addDragListener(new AppWidgetHostViewDragListener(launcher));
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}
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if (preview == null) {
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Drawable p = new FastBitmapDrawable(
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app.getWidgetCache().generateWidgetPreview(launcher,
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createWidgetInfo.info, maxWidth, null,
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previewSizeBeforeScale).first);
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if (RoundedCornerEnforcement.isRoundedCornerEnabled()) {
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p = new RoundDrawableWrapper(p, mEnforcedRoundedCornersForWidget);
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}
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preview = p;
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}
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if (previewSizeBeforeScale[0] < previewBitmapWidth) {
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// The icon has extra padding around it.
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int padding = (previewBitmapWidth - previewSizeBeforeScale[0]) / 2;
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if (previewBitmapWidth > previewViewWidth) {
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padding = padding * previewViewWidth / previewBitmapWidth;
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}
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previewBounds.left += padding;
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previewBounds.right -= padding;
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}
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scale = previewBounds.width() / (float) preview.getIntrinsicWidth();
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launcher.getDragController().addDragListener(new WidgetHostViewLoader(launcher, mView));
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dragOffset = null;
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dragRegion = null;
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draggableView = DraggableView.ofType(DraggableView.DRAGGABLE_WIDGET);
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} else {
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PendingAddShortcutInfo createShortcutInfo = (PendingAddShortcutInfo) mAddInfo;
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Drawable icon = createShortcutInfo.activityInfo.getFullResIcon(app.getIconCache());
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LauncherIcons li = LauncherIcons.obtain(launcher);
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preview = new FastBitmapDrawable(
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li.createScaledBitmapWithoutShadow(icon, 0));
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li.recycle();
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scale = ((float) launcher.getDeviceProfile().iconSizePx) / preview.getIntrinsicWidth();
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dragOffset = new Point(previewPadding / 2, previewPadding / 2);
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// Create a preview same as the workspace cell size and draw the icon at the
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// appropriate position.
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DeviceProfile dp = launcher.getDeviceProfile();
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int iconSize = dp.iconSizePx;
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int padding = launcher.getResources()
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.getDimensionPixelSize(R.dimen.widget_preview_shortcut_padding);
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previewBounds.left += padding;
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previewBounds.top += padding;
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dragRegion = new Rect();
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dragRegion.left = (mEstimatedCellSize[0] - iconSize) / 2;
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dragRegion.right = dragRegion.left + iconSize;
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dragRegion.top = (mEstimatedCellSize[1]
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- iconSize - dp.iconTextSizePx - dp.iconDrawablePaddingPx) / 2;
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dragRegion.bottom = dragRegion.top + iconSize;
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draggableView = DraggableView.ofType(DraggableView.DRAGGABLE_ICON);
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}
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// Since we are not going through the workspace for starting the drag, set drag related
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// information on the workspace before starting the drag.
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launcher.getWorkspace().prepareDragWithProvider(this);
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int dragLayerX = screenPos.x + previewBounds.left
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+ (int) ((scale * preview.getIntrinsicWidth() - preview.getIntrinsicWidth()) / 2);
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int dragLayerY = screenPos.y + previewBounds.top
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+ (int) ((scale * preview.getIntrinsicHeight() - preview.getIntrinsicHeight()) / 2);
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// Start the drag
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launcher.getDragController().startDrag(preview, draggableView, dragLayerX, dragLayerY,
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source, mAddInfo, dragOffset, dragRegion, scale, scale, options);
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}
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@Override
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protected Bitmap convertPreviewToAlphaBitmap(Bitmap preview) {
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if (mAddInfo instanceof PendingAddShortcutInfo || mEstimatedCellSize == null) {
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return super.convertPreviewToAlphaBitmap(preview);
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}
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int w = mEstimatedCellSize[0];
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int h = mEstimatedCellSize[1];
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final Bitmap b = Bitmap.createBitmap(w, h, Bitmap.Config.ALPHA_8);
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Rect src = new Rect(0, 0, preview.getWidth(), preview.getHeight());
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float scaleFactor = Math.min((w - blurSizeOutline) / (float) preview.getWidth(),
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(h - blurSizeOutline) / (float) preview.getHeight());
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int scaledWidth = (int) (scaleFactor * preview.getWidth());
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int scaledHeight = (int) (scaleFactor * preview.getHeight());
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Rect dst = new Rect(0, 0, scaledWidth, scaledHeight);
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// center the image
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dst.offset((w - scaledWidth) / 2, (h - scaledHeight) / 2);
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new Canvas(b).drawBitmap(preview, src, dst, new Paint(Paint.FILTER_BITMAP_FLAG));
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return b;
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}
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}
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