java - canvas.drawBitmap 位置和大小错误(未正确放置图像)

Question

大家好，预先感谢，我希望写得很好，因为我正在做一个简单的应用程序，应该将两个以上的位图合并在一个中，问题是位图的哪个位置和大小侧错了，真相不会找到后面给我的逻辑很好，事实上它是C#和PASE java中已经存在的Tengo Que代码，显然是不同的罪孽，但具有相同的原理。

我想知道你是否有办法按照代码中的说法来确定这些图像的位置和大小，

抱歉我的英语不好

CODIGO JAVA

绘制mPaint；

    Bitmap image1=BitmapUtils.decodeBase64(Lie.GeFondo().GetImagen());
    Bitmap image2=BitmapUtils.decodeBase64(Utilidades.getImagenTomadabase64());
    Bitmap image3=BitmapUtils.decodeBase64(Lie.GetBanner().GetImagen());
    Bitmap result = Bitmap.createBitmap(image1.getWidth(), image1.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(result);
    Rect srcRect = new Rect(0, 0, image1.getWidth(), image1.getHeight());
    Rect dstRect = new Rect(srcRect);
    Rect srcRect1 = new Rect( Foto.GetPosicionDeItems().Getx(),Foto.GetPosicionDeItems().Gety(),Foto.GetTamano().GetWidth(), Foto.GetTamano().GeHeight());
    Rect srcRect3 = new Rect( Lie.GetBanner().GetPosicionDeItems().Getx(), Lie.GetBanner().GetPosicionDeItems().Gety() ,Lie.GetBanner().GetTamano().GetWidth(), Lie.GetBanner().GetTamano().GeHeight());


    Rect srcRect2 = new Rect(0,0,image2.getWidth(), image2.getHeight());
    Rect srcRect4 = new Rect(0,0,image3.getWidth(), image3.getHeight());

    dstRect.offset(0, 0);
    canvas.drawBitmap(image1, srcRect, dstRect, null);
    dstRect.offset(image1.getWidth(), 0);
    srcRect1.offset(0, 0);
    canvas.drawBitmap(image2,srcRect2 ,srcRect1 , null);

    srcRect1.offset(image2.getWidth(), 0);
    srcRect3.offset(0, 0);
    canvas.drawBitmap(image3,srcRect4 ,srcRect3 , null);
    srcRect3.offset(image3.getWidth(), 0);
    myImage = (ImageView) findViewById(R.id.imageView);
    myImage.setImageBitmap(result);

在Java中看java图片http://i58.tinypic.com/1zywm5u.jpg

C# 代码

忽略 foreach。

System.Drawing.Bitmap Bac = (System.Drawing.Bitmap)Lienzo.Fondo.Imagen; System.Drawing.Graphics r = System.Drawing.Graphics.FromImage(Bac);

        if (Lienzo.Fotos != null)
        {
            if (Lienzo.Fotos.Count > 0)
            {
                int i = 0;
                foreach (RADMLIB.Items item in Lienzo.Fotos)
                {

                    System.Drawing.Bitmap img = (System.Drawing.Bitmap)Lista[i];
                    r.DrawImage(img, item.PosicionDeItems.X, item.PosicionDeItems.Y, item.Tamano.Width, item.Tamano.Height);
                    i++;
                }
            }
        }
        if (Lienzo.Banner != null)
        {
            r.DrawImage((System.Drawing.Bitmap)Lienzo.Banner.Imagen, Lienzo.Banner.PosicionDeItems.X, Lienzo.Banner.PosicionDeItems.Y, Lienzo.Banner.Tamano.Width, Lienzo.Banner.Tamano.Height);
        }

        return Bac;

参见c#图片http://i61.tinypic.com/s61wlh.jpg

Answer 1

我找到了解决办法使用 Matrix 设置位置和比例 x,y

    Bitmap image1=BitmapUtils.decodeBase64(Lie.GeFondo().GetImagen());
    Bitmap image2=BitmapUtils.getResizedBitmap(BitmapUtils.decodeBase64(Utilidades.getImagenTomadabase64()),Foto.GetTamano().GetWidth(),Foto.GetTamano().GeHeight());
    Bitmap image3=BitmapUtils.getResizedBitmap(BitmapUtils.decodeBase64(Lie.GetBanner().GetImagen()),Lie.GetBanner().GetTamano().GetWidth(),Lie.GetBanner().GetTamano().GeHeight());
    Bitmap result = Bitmap.createBitmap(image1.getWidth(), image1.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(result);//Create the canvas to your image
    Rect srcRect = new Rect(0, 0, image1.getWidth(), image1.getHeight());
    Rect dstRect = new Rect(srcRect);
    Matrix matrix = new Matrix ();
    Matrix matrix2 = new Matrix ();
    matrix.postTranslate( Foto.GetPosicionDeItems().Getx(),Foto.GetPosicionDeItems().Gety());
    matrix2.postTranslate( Lie.GetBanner().GetPosicionDeItems().Getx(),Lie.GetBanner().GetPosicionDeItems().Gety());
    canvas.drawBitmap(image1, srcRect, dstRect, null);
    dstRect.offset(image1.getWidth(), 0);
    canvas.drawBitmap(image2,matrix , null);
    canvas.drawBitmap(image3,matrix2 , null);

getResizedBitmap 方法

public static Bitmap getResizedBitmap(Bitmap bm, int newHeight, int newWidth) {

    int width = bm.getWidth();

    int height = bm.getHeight();

    float scaleWidth = ((float) newWidth) / width;

    float scaleHeight = ((float) newHeight) / height;



    Matrix matrix = new Matrix();



    matrix.postScale(scaleWidth, scaleHeight);



    Bitmap resizedBitmap = Bitmap.createBitmap(bm, 0, 0, width, height, matrix, false);

    return resizedBitmap;

}

看图

https://lh4.ggpht.com/LXW8kVc3U8qQUHnORI-3H4H-A2hjq92y_oEDsKIs-iBDkVBFTgjGP03xFReCeuyLlg=h900-rw