- package com.loaderman.customviewdemo;
- import Android.App.Activity;
- import Android.graphics.ColorMatrix;
- import Android.os.Bundle;
- import Android.util.Log;
- public class MainActivity extends Activity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- ColorMatrix colorMatrix1 = new ColorMatrix(new float[]{
- 0.1f, 0.2f, 0.3f, 0.4f, 0.5f,
- 0, 1, 0, 0, 0,
- 0, 0, 1, 0, 0,
- 0, 0, 0, 1, 0,
- });
- ColorMatrix colorMatrix2 = new ColorMatrix(new float[]{
- 0.11f, 0, 0, 0, 0,
- 0, 0.22f, 0, 0, 0,
- 0, 0, 0.33f, 0, 0,
- 0, 0, 0, 0.44f, 0,
- });
- printSetConcat(colorMatrix1,colorMatrix2);
- // printPreConcat(colorMatrix1,colorMatrix2);
- // printPostConcat(colorMatrix1,colorMatrix2);
- }
- private void printPostConcat(ColorMatrix colorMatrix1, ColorMatrix colorMatrix2){
- Log.d("loaderman",printArray(colorMatrix1.getArray()));
- Log.d("loaderman",printArray(colorMatrix2.getArray()));
- colorMatrix2.postConcat(colorMatrix1);
- Log.d("loaderman",printArray(colorMatrix2.getArray()));
- }
- private void printPreConcat(ColorMatrix colorMatrix1,ColorMatrix colorMatrix2){
- Log.d("loaderman",printArray(colorMatrix1.getArray()));
- colorMatrix1.preConcat(colorMatrix2);
- Log.d("loaderman",printArray(colorMatrix2.getArray()));
- Log.d("loaderman",printArray(colorMatrix1.getArray()));
- }
- private void printSetConcat(ColorMatrix colorMatrix1,ColorMatrix colorMatrix2){
- ColorMatrix resultMatrix = new ColorMatrix(new float[]{
- 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0,
- });
- resultMatrix.setConcat(colorMatrix1,colorMatrix2);
- Log.d("loaderman",printArray(colorMatrix1.getArray()));
- Log.d("loaderman",printArray(colorMatrix2.getArray()));
- Log.d("loaderman",printArray(resultMatrix.getArray()));
- }
- private String printArray(float[] array){
- StringBuilder builder = new StringBuilder("array dump:\n");
- for (int i=0;i<array.length;i++){
- if (i%5==0){
- builder.append("\n");
- }
- builder.append(array[i]+" ");
- }
- return builder.toString();
- }
- }
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- xmlns:Android="http://schemas.android.com/apk/res/android"
- Android:orientation="vertical"
- Android:background="#ffffff"
- Android:layout_width="fill_parent"
- Android:layout_height="fill_parent">
- <com.loaderman.customviewdemo.MyView
- Android:layout_width="match_parent"
- Android:layout_height="match_parent"/>
- </LinearLayout>
- package com.loaderman.customviewdemo;
- import Android.content.Context;
- import Android.graphics.*;
- import Android.util.AttributeSet;
- import Android.view.View;
- public class MyView extends View {
- private Paint mPaint = new Paint();
- private Bitmap bitmap;// 位图
- public MyView(Context context, AttributeSet attrs) {
- super(context, attrs);
- mPaint.setAntiAlias(true);
- // 获取位图
- bitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.dog);
- }
- @Override
- protected void onDraw(Canvas canvas) {
- super.onDraw(canvas);
- // drawRect(canvas);
- drawBitmap(canvas);
- }
- private void drawRect(Canvas canvas){
- mPaint.setARGB(255,200,100,100);
- // 绘制原始位图
- canvas.drawRect(0,0,500,600,mPaint);
- canvas.translate(550,0);
- // 生成色彩矩阵
- ColorMatrix colorMatrix = new ColorMatrix(new float[]{
- 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0,
- 0, 0, 1, 0, 0,
- 0, 0, 0, 1, 0,
- });
- mPaint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
- canvas.drawRect(0,0,500,600,mPaint);
- }
- private void drawBitmap(Canvas canvas){
- canvas.drawBitmap(bitmap, null, new Rect(0, 0, 500, 500 * bitmap.getHeight() / bitmap.getWidth()), mPaint);
- canvas.save();
- canvas.translate(510, 0);
- // 生成色彩矩阵
- // ColorMatrix colorMatrix = new ColorMatrix(new float[]{
- // 0.213f, 0.715f, 0.072f, 0, 0,
- // 0.213f, 0.715f, 0.072f, 0, 0,
- // 0.213f, 0.715f, 0.072f, 0, 0,
- // 0, 0, 0, 1, 0,
- // });
- ColorMatrix colorMatrix = new ColorMatrix();
- colorMatrix.setScale(1,1.3f,1,1);
- mPaint.setColorFilter(new ColorMatrixColorFilter(colorMatrix));
- canvas.drawBitmap(bitmap, null, new Rect(0, 0, 500, 500 * bitmap.getHeight() / bitmap.getWidth()), mPaint);
- canvas.restore();
- // canvas.translate(0,500);
- // ColorMatrix colorMatrix2 = new ColorMatrix(new float[]{
- // 0.3086f, 0.6094f, 0.0820f, 0, 0,
- // 0.3086f, 0.6094f, 0.0820f, 0, 0,
- // 0.3086f, 0.6094f, 0.0820f, 0, 0,
- // 0 , 0 , 0 , 1, 0
- // });
- //
- // mPaint.setColorFilter(new ColorMatrixColorFilter(colorMatrix2));
- // canvas.drawBitmap(bitmap, null, new Rect(0, 0, 500, 500 * bitmap.getHeight() / bitmap.getWidth()), mPaint);
- //
- // canvas.translate(510,0);
- // ColorMatrix colorMatrix3 = new ColorMatrix(new float[]{
- // 0, 0, 0, 0, 0,
- // 0, 0, 0, 0, 0,
- // 0, 0, 1, 0, 0,
- // 0, 0, 0, 1, 0,
- // });
- // mPaint.setColorFilter(new ColorMatrixColorFilter(colorMatrix3));
- // canvas.drawBitmap(bitmap, null, new Rect(0, 0, 500, 500 * bitmap.getHeight() / bitmap.getWidth()), mPaint);
- }
- }
效果图:
来源: http://www.bubuko.com/infodetail-2911734.html