Android Open Source - holoaccent Search View Drawable

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From Project

Back to project page holoaccent.

License

The source code is released under:

Apache License

Java Source Code

package com.negusoft.holoaccent.drawable;
/*from  w w  w  .j av  a  2 s .  c  om*/
import android.graphics.Canvas;
import android.graphics.ColorFilter;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.PixelFormat;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.util.DisplayMetrics;
import android.util.TypedValue;

public class SearchViewDrawable extends Drawable {
  
  private static final float LINED_WIDTH_DP = 1f;
  private static final float HEIGHT_DP = 4f;
  private static final float PADDING_HORIZONTAL_DP = 1.5f;

  private final SearchViewConstantState mState;
  private final Paint mPaint;
  private final float mHeight;
  
  public SearchViewDrawable(DisplayMetrics metrics, int color) {
    mState = new SearchViewConstantState(metrics, color);
    mPaint = initPaint(metrics, color, LINED_WIDTH_DP);
    mHeight = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, HEIGHT_DP, metrics);
  }
  
  private Paint initPaint(DisplayMetrics displayMetrics, int color, float lineWidthDp) {
        float lineWidth = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, lineWidthDp, displayMetrics);
    Paint result = new Paint();
    result.setColor(color);
    result.setStyle(Paint.Style.STROKE);
    result.setStrokeJoin(Paint.Join.MITER);
    result.setStrokeWidth(lineWidth);
    return result;
  }
  
  @Override
  public void draw(Canvas canvas) {
    Path path = getPath(getBounds(), mPaint.getStrokeWidth(), mHeight);
    canvas.drawPath(path, mPaint);
  }
  
  private Path getPath(Rect bounds, float lineWidth, float delimiterHeight) {
    float margin = mPaint.getStrokeWidth() / 2f;
    float top = bounds.bottom - delimiterHeight;
    float bottom = bounds.bottom - margin;
    float left = bounds.left + margin;
    float right = bounds.right - margin;
    
    Path result = new Path();
    result.moveTo(left, top);
    result.lineTo(left, bottom);
    result.lineTo(right, bottom);
    result.lineTo(right, top);
    
    return result;
  }

  @Override
  public int getOpacity() {
    return PixelFormat.TRANSLUCENT;
  }

  @Override
  public void setAlpha(int alpha) {
    // empty
  }

  @Override
  public void setColorFilter(ColorFilter cf) {
    // empty
  }

  @Override
  public final ConstantState getConstantState() {
    mState.changingConfigurationValue = super.getChangingConfigurations();
    return mState;
  }
  
  @Override
  public int getMinimumHeight() {
    return (int)mHeight;
  }
  
  @Override
  public boolean getPadding(Rect padding) {
    float horizontalPadding = TypedValue.applyDimension(
        TypedValue.COMPLEX_UNIT_DIP, PADDING_HORIZONTAL_DP, mState.mDisplayMetrics);
    padding.top = 0;
    padding.bottom = 0;
    padding.left = (int)horizontalPadding;
    padding.right = (int)horizontalPadding;
    return true;
  }
  
  public static class SearchViewConstantState extends ConstantState {

    public final DisplayMetrics mDisplayMetrics;
    public final int mColor;
    
    int changingConfigurationValue;
    
    public SearchViewConstantState(DisplayMetrics metrics, int color) {
      mDisplayMetrics = metrics;
      mColor = color;
    }

    @Override
    public int getChangingConfigurations() {
      return changingConfigurationValue;
    }

    @Override
    public Drawable newDrawable() {
      return new SearchViewDrawable(mDisplayMetrics, mColor);
    }
    
  }

}

Java Source Code List

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