Android Open Source - InkSketch Main Activity

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Back to project page InkSketch.

License

The source code is released under:

MIT License

Java Source Code

package com.androiddev101.inksketch;
//from   w  w  w  . j  av  a2s  .c  o m
import java.io.ByteArrayOutputStream;


import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.widget.ImageView;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.RelativeLayout;
import android.widget.RelativeLayout.LayoutParams;


public class MainActivity extends ActionBarActivity {

  private TouchDraw mPad;
  private RatingBar mBrushRating;
  private ImageView mSketchArea;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mPad = (TouchDraw) findViewById(R.id.tdPad);
    mBrushRating = (RatingBar) findViewById(R.id.rbBurshStroke);
    mBrushRating.setOnRatingBarChangeListener(new BrushSizeChangedListener());
    //init sketch area to 800x600 Bitmap with color yellow
    mSketchArea = (ImageView) findViewById(R.id.ivSketchArea);
    int w = 600, h = 800;
    Bitmap.Config conf = Bitmap.Config.RGB_565;
    Bitmap bmp = Bitmap.createBitmap(w, h, conf);
    bmp.eraseColor(Color.YELLOW);
    mSketchArea.setImageBitmap(bmp);
    mSketchArea.invalidate();
    //once redrawn resize drawing pad
    RelativeLayout padParent = (RelativeLayout) mPad.getParent();
    RelativeLayout.LayoutParams params = (LayoutParams) padParent.getLayoutParams();
    int id = mSketchArea.getId();
    params.addRule(RelativeLayout.ALIGN_LEFT, id);
    params.addRule(RelativeLayout.ALIGN_RIGHT, id);
    params.addRule(RelativeLayout.ALIGN_TOP, id);
    params.addRule(RelativeLayout.ALIGN_BOTTOM, id);
    padParent.setLayoutParams(params);
    padParent.invalidate();

  }

  public void onClickCompile(View view){
    Bitmap padBits = mPad.getBitmapFromView();
    ByteArrayOutputStream stream = new ByteArrayOutputStream();
    padBits.compress(Bitmap.CompressFormat.PNG, 50, stream);
    byte[] byteArray = stream.toByteArray();
    Intent intent = new Intent(this, PreviewActivity.class);
    intent.putExtra(Constants.BUNDLE_KEY_BITMAP, byteArray);
    MainActivity.this.startActivity(intent);
  }

  public void onClickClear(View view){
    mPad.clear();
  }

  private class BrushSizeChangedListener implements OnRatingBarChangeListener{


    @Override
    public void onRatingChanged(RatingBar ratingBar, float progress, boolean fromUser) {
      if(fromUser){
        switch((int)progress){
        case 1:
          mPad.changeStroke(TouchDraw.PAINT_BRUSH_WIDTH_SMALL);
          break;
        case 2:
          mPad.changeStroke(TouchDraw.PAINT_BRUSH_WIDTH_MEDIUM);
          break;
        default:
          mPad.changeStroke(TouchDraw.PAINT_BRUSH_WIDTH_LARGE);
          break;
        }
        mPad.invalidate();
      }

    }

  }
}

Java Source Code List

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