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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.alarmclock;
     18 
     19 import android.appwidget.AppWidgetManager;
     20 import android.content.Context;
     21 import android.content.res.Resources;
     22 import android.os.Bundle;
     23 
     24 import com.android.deskclock.R;
     25 import com.android.deskclock.Utils;
     26 
     27 public final class WidgetUtils {
     28 
     29     private WidgetUtils() {}
     30 
     31     // Calculate the scale factor of the fonts in the widget
     32     public static float getScaleRatio(Context context, Bundle options, int id, int cityCount) {
     33         if (options == null) {
     34             AppWidgetManager widgetManager = AppWidgetManager.getInstance(context);
     35             if (widgetManager == null) {
     36                 // no manager , do no scaling
     37                 return 1f;
     38             }
     39             options = widgetManager.getAppWidgetOptions(id);
     40         }
     41         if (options != null) {
     42             int minWidth = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH);
     43             if (minWidth == 0) {
     44                 // No data , do no scaling
     45                 return 1f;
     46             }
     47             final Resources res = context.getResources();
     48             float density = res.getDisplayMetrics().density;
     49             float ratio = (density * minWidth) / res.getDimension(R.dimen.min_digital_widget_width);
     50             ratio = Math.min(ratio, getHeightScaleRatio(context, options, id));
     51             ratio *= .83f;
     52 
     53             if (cityCount > 0) {
     54                 return (ratio > 1f) ? 1f : ratio;
     55             }
     56 
     57             ratio = Math.min(ratio, 1.6f);
     58             if (Utils.isPortrait(context)) {
     59                 ratio = Math.max(ratio, .71f);
     60             }
     61             else {
     62                 ratio = Math.max(ratio, .45f);
     63             }
     64             return ratio;
     65         }
     66         return 1f;
     67     }
     68 
     69     // Calculate the scale factor of the fonts in the list of  the widget using the widget height
     70     private static float getHeightScaleRatio(Context context, Bundle options, int id) {
     71         if (options == null) {
     72             AppWidgetManager widgetManager = AppWidgetManager.getInstance(context);
     73             if (widgetManager == null) {
     74                 // no manager , do no scaling
     75                 return 1f;
     76             }
     77             options = widgetManager.getAppWidgetOptions(id);
     78         }
     79         if (options != null) {
     80             int minHeight = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);
     81             if (minHeight == 0) {
     82                 // No data , do no scaling
     83                 return 1f;
     84             }
     85             final Resources res = context.getResources();
     86             float density = res.getDisplayMetrics().density;
     87             float ratio = density * minHeight / res.getDimension(R.dimen.min_digital_widget_height);
     88             if (Utils.isPortrait(context)) {
     89                 return ratio * 1.75f;
     90             }
     91             return ratio;
     92         }
     93         return 1;
     94     }
     95 }