1 /* 2 * Copyright (C) 2006 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.settings; 18 19 import android.app.Activity; 20 import android.app.ActivityManagerNative; 21 import android.content.res.Configuration; 22 import android.content.res.Resources; 23 import android.content.res.TypedArray; 24 import android.os.Bundle; 25 import android.os.RemoteException; 26 import android.util.DisplayMetrics; 27 import android.util.TypedValue; 28 import android.view.View; 29 import android.widget.ArrayAdapter; 30 import android.widget.Button; 31 import android.widget.Spinner; 32 import android.widget.TextView; 33 34 35 public class Display extends Activity implements View.OnClickListener { 36 @Override onCreate(Bundle icicle)37 public void onCreate(Bundle icicle) { 38 super.onCreate(icicle); 39 40 setContentView(R.layout.display); 41 42 mFontSize = (Spinner) findViewById(R.id.fontSize); 43 mFontSize.setOnItemSelectedListener(mFontSizeChanged); 44 String[] states = new String[3]; 45 Resources r = getResources(); 46 states[0] = r.getString(R.string.small_font); 47 states[1] = r.getString(R.string.medium_font); 48 states[2] = r.getString(R.string.large_font); 49 ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 50 android.R.layout.simple_spinner_item, states); 51 adapter.setDropDownViewResource( 52 android.R.layout.simple_spinner_dropdown_item); 53 mFontSize.setAdapter(adapter); 54 55 mPreview = (TextView) findViewById(R.id.preview); 56 mPreview.setText(r.getText(R.string.font_size_preview_text)); 57 58 Button save = (Button) findViewById(R.id.save); 59 save.setText(r.getText(R.string.font_size_save)); 60 save.setOnClickListener(this); 61 62 mTextSizeTyped = new TypedValue(); 63 TypedArray styledAttributes = 64 obtainStyledAttributes(android.R.styleable.TextView); 65 styledAttributes.getValue(android.R.styleable.TextView_textSize, 66 mTextSizeTyped); 67 68 DisplayMetrics metrics = getResources().getDisplayMetrics(); 69 mDisplayMetrics = new DisplayMetrics(); 70 mDisplayMetrics.density = metrics.density; 71 mDisplayMetrics.heightPixels = metrics.heightPixels; 72 mDisplayMetrics.scaledDensity = metrics.scaledDensity; 73 mDisplayMetrics.widthPixels = metrics.widthPixels; 74 mDisplayMetrics.xdpi = metrics.xdpi; 75 mDisplayMetrics.ydpi = metrics.ydpi; 76 77 styledAttributes.recycle(); 78 } 79 80 @Override onResume()81 public void onResume() { 82 super.onResume(); 83 try { 84 mCurConfig.updateFrom( 85 ActivityManagerNative.getDefault().getConfiguration()); 86 } catch (RemoteException e) { 87 } 88 if (mCurConfig.fontScale < 1) { 89 mFontSize.setSelection(0); 90 } else if (mCurConfig.fontScale > 1) { 91 mFontSize.setSelection(2); 92 } else { 93 mFontSize.setSelection(1); 94 } 95 updateFontScale(); 96 } 97 updateFontScale()98 private void updateFontScale() { 99 mDisplayMetrics.scaledDensity = mDisplayMetrics.density * 100 mCurConfig.fontScale; 101 102 float size = mTextSizeTyped.getDimension(mDisplayMetrics); 103 mPreview.setTextSize(TypedValue.COMPLEX_UNIT_PX, size); 104 } 105 onClick(View v)106 public void onClick(View v) { 107 try { 108 ActivityManagerNative.getDefault().updatePersistentConfiguration(mCurConfig); 109 } catch (RemoteException e) { 110 } 111 finish(); 112 } 113 114 private Spinner.OnItemSelectedListener mFontSizeChanged 115 = new Spinner.OnItemSelectedListener() { 116 public void onItemSelected(android.widget.AdapterView av, View v, 117 int position, long id) { 118 if (position == 0) { 119 mCurConfig.fontScale = .75f; 120 } else if (position == 2) { 121 mCurConfig.fontScale = 1.25f; 122 } else { 123 mCurConfig.fontScale = 1.0f; 124 } 125 126 updateFontScale(); 127 } 128 129 public void onNothingSelected(android.widget.AdapterView av) { 130 } 131 }; 132 133 private Spinner mFontSize; 134 private TextView mPreview; 135 private TypedValue mTextSizeTyped; 136 private DisplayMetrics mDisplayMetrics; 137 private Configuration mCurConfig = new Configuration(); 138 } 139