打印机不考虑图像的对齐方式。默认情况下,徽标始终保持对齐。文本对齐没有问题。因此aligncenter()
方法没有什么问题。当我在while循环中设置对齐方式时,在纸上会打印一系列问号。
public void printImage(Bitmap bitmap, boolean center) {
int width = bitmap.getWidth();
int height = bitmap.getHeight();
int newWidth = this.mType58 ? 384 : 576;
if (width > (this.mType58 ? 384 : 576)) {
bitmap = LibUtil.setImgSize(bitmap, (float) newWidth, (float) (height / (width / newWidth)), (float) width, (float) height);
}
try {
PrinterWriter mThirdPrinter = this.mType58 ? new PrinterWriter58mm(384, 384) : new PrinterWriter80mm(576, 576);
ArrayList<byte[]> datas = mThirdPrinter.getImageByte(bitmap);
if (mThirdPrinter.getDataAndClose() == null) {
if (this.mCallback != null) {
this.mCallback.onError(ErrorCode.IMAGE_NOT_FONUD);
}
return;
}
try {
datas.add(mThirdPrinter.getDataAndClose());
} catch (NullPointerException e) {
e.printStackTrace();
}
if (datas == null) {
DebugLog.LogD("imgpath is empty, datas is null, maybe is TFCard");
return;
}
this.mPrinterModule.sendData(new byte[]{(byte) 27, (byte) 74, (byte) 0});
Iterator it = datas.iterator();
byte [] alignment = alignCenter();
int i = 0 ;
byte [] data1 = null ;
while (it.hasNext()) {
data1[i] = (byte) it.next();
}
this.mPrinterModule.sendData(alignment);
this.mPrinterModule.sendData(data1);
} catch (IOException e2) {
e2.printStackTrace();
}
}
答案 0 :(得分:0)
当我在另一个办公室时,这种项目我遇到类似的问题,库中的所有对齐功能均不起作用。但是我有棘手的解决方案,以使徽标图像获得中心。 我绘制具有白色或透明分辨率的位图,并将宽度位置恰好位于收据的中间
public Bitmap createBitmap(Rect rectImage, int i, int j) {
Paint p = new Paint();
p.setStyle(Style.FILL_AND_STROKE);
p.setAntiAlias(true);
p.setFilterBitmap(true);
p.setDither(true);
p.setColor(Color.WHITE);
Bitmap bitmap = Bitmap.createBitmap(rectImage.width() * 2,
rectImage.height() * 2, Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
// c.drawColor(Color.RED);
c.drawRect(rectImage.left, rectImage.top, rectImage.right,
rectImage.bottom, p);
return bitmap;
}
然后将此位图与您的徽标合并,请使用与此类似的代码(而非此代码)
public static Bitmap mergeToPin(Bitmap left, Bitmap right) {
Bitmap result = Bitmap.createBitmap(left.getWidth(), left.getHeight(), left.getConfig());
Canvas canvas = new Canvas(result);
int widthleft = left.getWidth();
int widthright = right.getWidth();
canvas.drawBitmap(left, 0f, 0f, null);
canvas.drawBitmap(right, widthleft, 0f, null);
return result;
}
您知道,收据的大小可以预测。这样就可以为透明图像的宽度尺寸设置静态值