Android Open Source - Android-PorterDuff Main Activity

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Back to project page Android-PorterDuff.

License

The source code is released under:

Apache License

Java Source Code

package com.dgmltn.porterduff;
//from   w  w  w .  j av  a  2s .c  om
import android.app.Activity;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Context;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;
import android.widget.TextView;

// http://android-er.blogspot.com/2012/09/porterduffcolorfilter-demonstration.html
public class MainActivity extends Activity {
  ImageView imageView;

  SeekBar alphaBar, redBar, greenBar, blueBar;
  Spinner modeSpinner;
  TextView colorInfo;

  PorterDuff.Mode[] optMode = PorterDuff.Mode.values();

  String[] optModeName;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    imageView = (ImageView) findViewById(R.id.iv);

    alphaBar = (SeekBar) findViewById(R.id.bar_a);
    redBar = (SeekBar) findViewById(R.id.bar_r);
    greenBar = (SeekBar) findViewById(R.id.bar_g);
    blueBar = (SeekBar) findViewById(R.id.bar_b);

    colorInfo = (TextView) findViewById(R.id.colorinfo);

    alphaBar.setOnSeekBarChangeListener(colorBarChangeListener);
    redBar.setOnSeekBarChangeListener(colorBarChangeListener);
    greenBar.setOnSeekBarChangeListener(colorBarChangeListener);
    blueBar.setOnSeekBarChangeListener(colorBarChangeListener);

    modeSpinner = (Spinner) findViewById(R.id.mode);
    prepareOptModeName();
    ArrayAdapter<String> modeArrayAdapter = new ArrayAdapter<String>(
        this,
        android.R.layout.simple_spinner_item,
        optModeName);
    modeArrayAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    modeSpinner.setAdapter(modeArrayAdapter);
    modeSpinner.setSelection(0);
    modeSpinner.setOnItemSelectedListener(onModeItemSelectedListener);

    setPorterDuffColorFilter(imageView);

  }

  @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;
  }

  // Automatically triggered by the clipboard button
  public void clipboard(View view) {
    // Gets a handle to the clipboard service.
    ClipboardManager clipboard = (ClipboardManager)
        getSystemService(Context.CLIPBOARD_SERVICE);

    // Creates a new text clip to put on the clipboard
    ClipData clip = ClipData.newPlainText("PorterDuff code", generateCode());
    
    // Set the clipboard's primary clip.
    clipboard.setPrimaryClip(clip);
  }

  private void prepareOptModeName() {
    optModeName = new String[optMode.length];

    for (int i = 0; i < optMode.length; i++) {
      optModeName[i] = optMode[i].toString();
    }
  }

  OnSeekBarChangeListener colorBarChangeListener = new OnSeekBarChangeListener() {

    @Override
    public void onProgressChanged(SeekBar arg0, int arg1, boolean arg2) {
      setPorterDuffColorFilter(imageView);
    }

    @Override
    public void onStartTrackingTouch(SeekBar seekBar) {
      // TODO Auto-generated method stub

    }

    @Override
    public void onStopTrackingTouch(SeekBar seekBar) {
      // TODO Auto-generated method stub

    }
  };

  OnItemSelectedListener onModeItemSelectedListener = new OnItemSelectedListener() {

    @Override
    public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
        long arg3) {
      setPorterDuffColorFilter(imageView);

    }

    @Override
    public void onNothingSelected(AdapterView<?> arg0) {
      // TODO Auto-generated method stub

    }

  };

  private void setPorterDuffColorFilter(ImageView iv) {

    int srcColor = Color.argb(
        alphaBar.getProgress(),
        redBar.getProgress(),
        greenBar.getProgress(),
        blueBar.getProgress());

    PorterDuff.Mode mode = optMode[modeSpinner.getSelectedItemPosition()];

    PorterDuffColorFilter porterDuffColorFilter = new PorterDuffColorFilter(srcColor, mode);
    iv.setColorFilter(porterDuffColorFilter);

    colorInfo.setText(generateCode());
    //    colorInfo.setText(
    //        "srcColor = #" + Integer.toHexString(srcColor) + "\n" +
    //            "mode = " + String.valueOf(mode.toString()) + " of total " + String.valueOf(optMode.length)
    //            + " modes.");

  }

  private String generateCode() {
    PorterDuff.Mode mode = optMode[modeSpinner.getSelectedItemPosition()];

    String code = "int srcColor = Color.argb(0x" + Integer.toHexString(alphaBar.getProgress())
        + ", 0x" + Integer.toHexString(redBar.getProgress())
        + ", 0x" + Integer.toHexString(greenBar.getProgress())
        + ", 0x" + Integer.toHexString(blueBar.getProgress())
        + ");\n"
        + "PorterDuff.Mode mode = PorterDuff.Mode." + String.valueOf(mode.toString()) + ";\n"
        + "PorterDuffColorFilter filter = new PorterDuffColorFilter(srcColor, mode);\n"
        + "imageView.getBackground().setColorFilter(filter);\n";

    return code;
  }
}

Java Source Code List

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