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Merge pull request #1 from GautamChibde/feature/line_bar_visualizer
Feature/line bar visualizer
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94 changes: 94 additions & 0 deletions
94
audiovisualizer/src/main/java/com/chibde/visualizer/LineBarVisualizer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package com.chibde.visualizer; | ||
|
|
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| import android.content.Context; | ||
| import android.graphics.Canvas; | ||
| import android.graphics.Color; | ||
| import android.graphics.Paint; | ||
| import android.support.annotation.Nullable; | ||
| import android.util.AttributeSet; | ||
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|
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| import com.chibde.BaseVisualizer; | ||
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| /** | ||
| * Custom view that creates a Line and Bar visualizer effect for | ||
| * the android {@link android.media.MediaPlayer} | ||
| * <p> | ||
| * Created by gautam chibde on 22/11/17. | ||
| */ | ||
|
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| public class LineBarVisualizer extends BaseVisualizer { | ||
| private Paint middleLine; | ||
| private float density; | ||
| private int gap; | ||
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| public LineBarVisualizer(Context context) { | ||
| super(context); | ||
| } | ||
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| public LineBarVisualizer(Context context, @Nullable AttributeSet attrs) { | ||
| super(context, attrs); | ||
| } | ||
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| public LineBarVisualizer(Context context, @Nullable AttributeSet attrs, int defStyleAttr) { | ||
| super(context, attrs, defStyleAttr); | ||
| } | ||
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| @Override | ||
| protected void init() { | ||
| density = 50; | ||
| gap = 4; | ||
| middleLine = new Paint(); | ||
| middleLine.setColor(Color.BLUE); | ||
| } | ||
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| /** | ||
| * Sets the density to the Bar visualizer i.e the number of bars | ||
| * to be displayed. Density can vary from 10 to 256. | ||
| * by default the value is set to 50. | ||
| * | ||
| * @param density density of the bar visualizer | ||
| */ | ||
| public void setDensity(float density) { | ||
| if (this.density > 180) { | ||
| this.middleLine.setStrokeWidth(1); | ||
| this.gap = 1; | ||
| } else { | ||
| this.gap = 4; | ||
| } | ||
| this.density = density; | ||
| if (density > 256) { | ||
| this.density = 250; | ||
| this.gap = 0; | ||
| } else if (density <= 10) { | ||
| this.density = 10; | ||
| } | ||
| } | ||
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| @Override | ||
| protected void onDraw(Canvas canvas) { | ||
| if (middleLine.getColor() != Color.BLUE) { | ||
| middleLine.setColor(color); | ||
| } | ||
| if (bytes != null) { | ||
| float barWidth = getWidth() / density; | ||
| float div = bytes.length / density; | ||
| canvas.drawLine(0, getHeight() / 2, getWidth(), getHeight() / 2, middleLine); | ||
| paint.setStrokeWidth(barWidth - gap); | ||
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| for (int i = 0; i < density; i++) { | ||
| int x = (int) Math.ceil(i * div); | ||
| int top = canvas.getHeight() / 2 | ||
| + (128 - Math.abs(bytes[x])) | ||
| * (canvas.getHeight() / 2) / 128; | ||
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| int bottom = canvas.getHeight() / 2 | ||
| - (128 - Math.abs(bytes[x])) | ||
| * (canvas.getHeight() / 2) / 128; | ||
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| canvas.drawLine(i * barWidth, bottom, i * barWidth, getHeight() / 2, paint); | ||
| canvas.drawLine(i * barWidth, top, i * barWidth, getHeight() / 2, paint); | ||
| } | ||
| super.onDraw(canvas); | ||
| } | ||
| } | ||
| } |
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