| /* |
| * Copyright (C) 2021 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.widget.picker; |
| |
| import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_PREDICTION; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.util.Log; |
| import android.util.Size; |
| import android.view.Gravity; |
| import android.view.LayoutInflater; |
| import android.view.View; |
| import android.view.ViewGroup; |
| import android.widget.TableLayout; |
| import android.widget.TableRow; |
| |
| import androidx.annotation.Nullable; |
| |
| import com.android.launcher3.DeviceProfile; |
| import com.android.launcher3.Launcher; |
| import com.android.launcher3.R; |
| import com.android.launcher3.model.WidgetItem; |
| import com.android.launcher3.widget.WidgetCell; |
| import com.android.launcher3.widget.util.WidgetSizes; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** A {@link TableLayout} for showing recommended widgets. */ |
| public final class WidgetsRecommendationTableLayout extends TableLayout { |
| private static final String TAG = "WidgetsRecommendationTableLayout"; |
| private static final float DOWN_SCALE_RATIO = 0.9f; |
| private static final float MAX_DOWN_SCALE_RATIO = 0.5f; |
| private final float mWidgetsRecommendationTableVerticalPadding; |
| private final float mWidgetCellVerticalPadding; |
| private final float mWidgetCellTextViewsHeight; |
| |
| private float mRecommendationTableMaxHeight = Float.MAX_VALUE; |
| @Nullable private OnLongClickListener mWidgetCellOnLongClickListener; |
| @Nullable private OnClickListener mWidgetCellOnClickListener; |
| |
| public WidgetsRecommendationTableLayout(Context context) { |
| this(context, /* attrs= */ null); |
| } |
| |
| public WidgetsRecommendationTableLayout(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| // There are 1 row for title, 1 row for dimension and 2 rows for description. |
| mWidgetsRecommendationTableVerticalPadding = 2 * getResources() |
| .getDimensionPixelSize(R.dimen.recommended_widgets_table_vertical_padding); |
| mWidgetCellVerticalPadding = 2 * getResources() |
| .getDimensionPixelSize(R.dimen.widget_cell_vertical_padding); |
| mWidgetCellTextViewsHeight = 4 * getResources().getDimension(R.dimen.widget_cell_font_size); |
| } |
| |
| /** Sets a {@link android.view.View.OnLongClickListener} for all widget cells in this table. */ |
| public void setWidgetCellLongClickListener(OnLongClickListener onLongClickListener) { |
| mWidgetCellOnLongClickListener = onLongClickListener; |
| } |
| |
| /** Sets a {@link android.view.View.OnClickListener} for all widget cells in this table. */ |
| public void setWidgetCellOnClickListener(OnClickListener widgetCellOnClickListener) { |
| mWidgetCellOnClickListener = widgetCellOnClickListener; |
| } |
| |
| /** |
| * Sets a list of recommended widgets that would like to be displayed in this table within the |
| * desired {@code recommendationTableMaxHeight}. |
| * |
| * <p>If the content can't fit {@code recommendationTableMaxHeight}, this view will remove a |
| * last row from the {@code recommendedWidgets} until it fits or only one row left. If the only |
| * row still doesn't fit, we scale down the preview image. |
| */ |
| public void setRecommendedWidgets(List<ArrayList<WidgetItem>> recommendedWidgets, |
| float recommendationTableMaxHeight) { |
| mRecommendationTableMaxHeight = recommendationTableMaxHeight; |
| RecommendationTableData data = fitRecommendedWidgetsToTableSpace(/* previewScale= */ 1f, |
| recommendedWidgets); |
| bindData(data); |
| } |
| |
| private void bindData(RecommendationTableData data) { |
| if (data.mRecommendationTable.size() == 0) { |
| setVisibility(GONE); |
| return; |
| } |
| |
| removeAllViews(); |
| |
| for (int i = 0; i < data.mRecommendationTable.size(); i++) { |
| List<WidgetItem> widgetItems = data.mRecommendationTable.get(i); |
| TableRow tableRow = new TableRow(getContext()); |
| tableRow.setGravity(Gravity.TOP); |
| |
| for (WidgetItem widgetItem : widgetItems) { |
| WidgetCell widgetCell = addItemCell(tableRow); |
| widgetCell.applyFromCellItem(widgetItem, data.mPreviewScale); |
| } |
| addView(tableRow); |
| } |
| setVisibility(VISIBLE); |
| } |
| |
| private WidgetCell addItemCell(ViewGroup parent) { |
| WidgetCell widget = (WidgetCell) LayoutInflater.from( |
| getContext()).inflate(R.layout.widget_cell, parent, false); |
| |
| View previewContainer = widget.findViewById(R.id.widget_preview_container); |
| previewContainer.setOnClickListener(mWidgetCellOnClickListener); |
| previewContainer.setOnLongClickListener(mWidgetCellOnLongClickListener); |
| widget.setAnimatePreview(false); |
| widget.setSourceContainer(CONTAINER_WIDGETS_PREDICTION); |
| |
| parent.addView(widget); |
| return widget; |
| } |
| |
| private RecommendationTableData fitRecommendedWidgetsToTableSpace( |
| float previewScale, |
| List<ArrayList<WidgetItem>> recommendedWidgetsInTable) { |
| if (previewScale < MAX_DOWN_SCALE_RATIO) { |
| Log.w(TAG, "Hide recommended widgets. Can't down scale previews to " + previewScale); |
| return new RecommendationTableData(List.of(), previewScale); |
| } |
| // A naive estimation of the widgets recommendation table height without inflation. |
| float totalHeight = mWidgetsRecommendationTableVerticalPadding; |
| DeviceProfile deviceProfile = Launcher.getLauncher(getContext()).getDeviceProfile(); |
| for (int i = 0; i < recommendedWidgetsInTable.size(); i++) { |
| List<WidgetItem> widgetItems = recommendedWidgetsInTable.get(i); |
| float rowHeight = 0; |
| for (int j = 0; j < widgetItems.size(); j++) { |
| WidgetItem widgetItem = widgetItems.get(j); |
| Size widgetSize = WidgetSizes.getWidgetItemSizePx(getContext(), deviceProfile, |
| widgetItem); |
| float previewHeight = widgetSize.getHeight() * previewScale; |
| rowHeight = Math.max(rowHeight, |
| previewHeight + mWidgetCellTextViewsHeight + mWidgetCellVerticalPadding); |
| } |
| totalHeight += rowHeight; |
| } |
| |
| if (totalHeight < mRecommendationTableMaxHeight) { |
| return new RecommendationTableData(recommendedWidgetsInTable, previewScale); |
| } |
| |
| if (recommendedWidgetsInTable.size() > 1) { |
| // We don't want to scale down widgets preview unless we really need to. Reduce the |
| // num of row by 1 to see if it fits. |
| return fitRecommendedWidgetsToTableSpace( |
| previewScale, |
| recommendedWidgetsInTable.subList(/* fromIndex= */0, |
| /* toIndex= */recommendedWidgetsInTable.size() - 1)); |
| } |
| |
| float nextPreviewScale = previewScale * DOWN_SCALE_RATIO; |
| return fitRecommendedWidgetsToTableSpace(nextPreviewScale, recommendedWidgetsInTable); |
| } |
| |
| /** Data class for the widgets recommendation table and widgets preview scaling. */ |
| private class RecommendationTableData { |
| private final List<ArrayList<WidgetItem>> mRecommendationTable; |
| private final float mPreviewScale; |
| |
| RecommendationTableData(List<ArrayList<WidgetItem>> recommendationTable, |
| float previewScale) { |
| mRecommendationTable = recommendationTable; |
| mPreviewScale = previewScale; |
| } |
| } |
| } |