Android Open Source - typewriter Main Activity

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Back to project page typewriter.

License

The source code is released under:

Apache License

Java Source Code

package com.aeclarke.typewriter;
// w  w  w . ja v a2  s  . co  m
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import javax.xml.bind.annotation.adapters.HexBinaryAdapter;

import android.R.string;
import android.app.Activity;
import android.app.Fragment;
import android.content.Context;
import android.os.Bundle;
import android.text.method.ScrollingMovementMethod;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.aeclarke.typewriter.R;
import com.google.typography.font.sfntly.Font;
import com.google.typography.font.sfntly.FontFactory;
import com.google.typography.font.sfntly.Tag;
import com.google.typography.font.sfntly.Font.MacintoshEncodingId;
import com.google.typography.font.sfntly.Font.PlatformId;
import com.google.typography.font.sfntly.data.ReadableFontData;
import com.google.typography.font.sfntly.data.WritableFontData;
import com.google.typography.font.sfntly.table.Header;
import com.google.typography.font.sfntly.table.Table;
import com.google.typography.font.sfntly.table.Table.Builder;
import com.google.typography.font.sfntly.table.core.CMap;
import com.google.typography.font.sfntly.table.core.CMapFormat4;
import com.google.typography.font.sfntly.table.core.CMapTable;
import com.google.typography.font.sfntly.table.core.CMapTable.CMapId;
import com.google.typography.font.sfntly.table.truetype.Glyph;
import com.google.typography.font.sfntly.table.truetype.GlyphTable;
import com.google.typography.font.sfntly.table.truetype.LocaTable;
import com.google.typography.font.tools.subsetter.CMapTableBuilder;

public class MainActivity extends Activity {

  private static final String ROBOTO_PATH = "/system/fonts/Roboto-Regular.ttf";

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    if (savedInstanceState == null) {
      getFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
    }
    
    ((TextView) findViewById(R.id.main_content_text_1)).setText("Starting...");
    try {
      FontManipulator fontManipulator = new FontManipulator(ROBOTO_PATH);
      fontManipulator.backupFont();
      Font font = fontManipulator.loadFont(new File(ROBOTO_PATH))[0];

      listFontPlatformInformation(font, (TextView) findViewById(R.id.main_content_text_2));
      listTablesTagListToView(font, (TextView) findViewById(R.id.main_content_text_4));
      listSampleCmapEntries(font, (TextView) findViewById(R.id.main_content_text_3));
      
//      fontManipulator.saveFontAs(fontManipulator.applyCaesarCypherToFont(font), ROBOTO_PATH, this);
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
  
  
  private CMapTable listFontPlatformInformation(Font font, TextView findViewById) {
    CMapTable cmapTable = font.getTable(Tag.cmap);
    Iterator<CMap> cmapSubtableIterator = cmapTable.iterator();

    StringBuilder stringBuilder = new StringBuilder();
    stringBuilder.append("PlatformID/EncodingID combinations present in Roboto-Regular.ttf:");
    stringBuilder.append("\n");
    for (; cmapSubtableIterator.hasNext();) {
      CMap next = cmapSubtableIterator.next();
      stringBuilder.append(Integer.toString(next.platformId()) + " - " + Integer.toString(next.encodingId()) + "\n");
    }
    stringBuilder.append("\nID  Platform Description\n");
    stringBuilder.append("0   Unicode\n");
    stringBuilder.append("1   Macintosh\n");
    stringBuilder.append("2   ISO [deprecated]\n");
    stringBuilder.append("3   Windows\n");
    stringBuilder.append("4   Custom\n");
    stringBuilder.append("\nId Encoding Description\n");
    stringBuilder.append("0  Unicode 1.0 semantics" + "\n" +
              "1  Unicode 1.1 semantics" + "\n" +
              "2  ISO/IEC 10646 semantics" + "\n" +
              "3  Unicode 2.0 and onwards semantics, Unicode BMP only (cmap subtable formats 0, 4, 6)." + "\n" +
              "4  Unicode 2.0 and onwards semantics, Unicode full repertoire (cmap subtable formats 0, 4, 6, 10, 12)." + "\n" +
              "5  Unicode Variation Sequences (cmap subtable format 14)." + "\n" +
              "6  Unicode full repertoire (cmap subtable formats 0, 4, 6, 10, 12, 13).");
    stringBuilder.append("\n\n\nBelow are some mapped characters:\n");
    findViewById.setText(stringBuilder);
    return cmapTable;
  }

  private Map<Integer, Integer> listSampleCmapEntries(Font font,
      TextView cmappingTextView) {
    Map<Integer, Integer> characterMapping = new HashMap<Integer, Integer>();
    CMapTable cmapTable = font.getTable(Tag.cmap);
    CMap cmap = cmapTable.cmap(CMapId.getInstance(0,3));
    Iterator<Integer> cmapIterator = cmap.iterator();
    StringBuilder mappingStringBuilder = new StringBuilder();
    mappingStringBuilder.append("\nThe cmap table format is: " + cmap.format() + "\n");
    for (; cmapIterator.hasNext();) {
      int characterId = cmapIterator.next();
      int glyphId  = cmap.glyphId(characterId);
      if(characterId < 100) {
        characterMapping.put(characterId, glyphId + 1);
        mappingStringBuilder.append(Integer.toHexString(characterId) + ":" + Integer.toString(glyphId) + "\n");
      } else {
        characterMapping.put(characterId, glyphId);
      }
    }
    cmappingTextView.setText(mappingStringBuilder);
    return characterMapping;
  }

  private void listTablesTagListToView(Font font, TextView tableTagsView) {
    StringBuilder tableListBuilder = new StringBuilder();
    tableListBuilder.append("Below are the tag names of each table in the font:\n");
    for (Iterator<? extends Table> tableIterator = font.iterator(); tableIterator.hasNext();) {
      Table table = tableIterator.next();
      tableListBuilder.append(Tag.stringValue(table.headerTag()) + "\n");
    }
    tableTagsView.setText(tableListBuilder);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {

    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  /**
   * A placeholder fragment containing a simple view.
   */
  public static class PlaceholderFragment extends Fragment {

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
      View rootView = inflater.inflate(R.layout.fragment_main, container,
          false);
      return rootView;
    }
  }
}

Java Source Code List

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