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@@ -0,0 +1,314 @@
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+package com.compdfkit.tools.common.utils.print;
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+
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+import android.annotation.SuppressLint;
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+import android.content.Context;
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+import android.graphics.Bitmap;
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+import android.graphics.Canvas;
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+import android.graphics.Color;
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+import android.graphics.Matrix;
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+import android.graphics.pdf.PdfDocument;
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+import android.os.AsyncTask;
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+import android.os.Bundle;
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+import android.os.CancellationSignal;
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+import android.os.ParcelFileDescriptor;
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+import android.print.PageRange;
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+import android.print.PrintAttributes;
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+import android.print.PrintDocumentAdapter;
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+import android.print.PrintDocumentInfo;
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+import android.print.pdf.PrintedPdfDocument;
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+import android.util.SparseIntArray;
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+
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+import androidx.print.PrintHelper;
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+
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+
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+import com.compdfkit.tools.BuildConfig;
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+
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+import java.io.FileOutputStream;
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+import java.io.IOException;
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+import java.util.ArrayList;
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+import java.util.List;
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+import java.util.Stack;
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+
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+/**
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+ * @classname：ProPrintAdapter
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+ * @author：luozhipeng
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+ * @date：2019-10-11 21:59
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+ * @description： 打印机适配类
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+ */
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+public class CPDFPrintAdpater extends PrintDocumentAdapter {
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+ private static final int MILS_PER_INCH = 1000;
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+ /****** 是否显示打印的文档页码测试信息 ******/
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+ private static final boolean isShowTestPage = BuildConfig.DEBUG;
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+ /****** 打印清晰度： 1.5：标清；2.3：高清；3：超清 ******/
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+ public static final float SD = 1.5f;
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+ public static final float HQ = 2.3f;
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+ public static final float FHQ = 3.0f;
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+ private float resolutionScale = SD;
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+ /****** 是否绘制注释 ******/
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+ private boolean isDrawAnnot = true;
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+ private Context context;
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+ private String jobName;
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+ private int totalpages;
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+ private PrintAttributes currentAttributes;
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+ private IPrintCallback iPrintCallback;
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+ private final Stack<AsyncTask> mStack = new Stack<>();
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+
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+ public CPDFPrintAdpater(Context context, int totalpages, String jobName, IPrintCallback iPrintCallback) {
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+ this.context = context.getApplicationContext();
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+ this.totalpages = totalpages;
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+ this.jobName = jobName;
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+ this.iPrintCallback = iPrintCallback;
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+ }
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+
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+ public CPDFPrintAdpater(Context context, int totalpages, String jobName, float resolutionScale, boolean isDrawAnnot, IPrintCallback iPrintCallback) {
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+ this.resolutionScale = resolutionScale;
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+ this.isDrawAnnot = isDrawAnnot;
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+ this.context = context.getApplicationContext();
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+ this.totalpages = totalpages;
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+ this.jobName = jobName;
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+ this.iPrintCallback = iPrintCallback;
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+ }
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+
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+ public void setResolutionScale(float resolutionScale) {
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+ this.resolutionScale = resolutionScale;
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+ }
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+
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+ public void setDrawAnnot(boolean drawAnnot) {
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+ isDrawAnnot = drawAnnot;
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+ }
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+
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+ @Override
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+ public void onLayout(PrintAttributes oldAttributes, PrintAttributes newAttributes, CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle extras) {
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+ currentAttributes = newAttributes;
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+
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+ // Respond to cancellation request
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+ if (cancellationSignal.isCanceled()) {
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+ callback.onLayoutCancelled();
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+ return;
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+ }
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+
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+ if (totalpages > 0) {
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+ //构建文档配置信息
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+ PrintDocumentInfo info = new PrintDocumentInfo
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+ .Builder(jobName)
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+ .setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT)
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+ .setPageCount(totalpages)
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+ .build();
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+ // Content layout reflow is complete
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+ callback.onLayoutFinished(info, true);
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+ } else {
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+ // Otherwise report an error to the print framework
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+ callback.onLayoutFailed("Page count calculation failed.");
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+ }
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+ }
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+
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+ @SuppressLint("StaticFieldLeak")
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+ @Override
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+ public void onWrite(PageRange[] pageRanges, ParcelFileDescriptor destination, CancellationSignal cancellationSignal, WriteResultCallback callback) {
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+ final AsyncTask<Void, Void, Throwable> asyncTask = new AsyncTask<Void, Void, Throwable>() {
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+ final SparseIntArray writtenPages = new SparseIntArray();
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+
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+ @Override
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+ protected Throwable doInBackground(Void... voids) {
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+ PrintedPdfDocument mPdfDocument = null;
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+ try {
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+ // check for cancellation
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+ if (isCancelled() || cancellationSignal.isCanceled()) {
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+ return null;
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+ }
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+
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+ // Create a new PdfDocument with the requested page attributes
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+ mPdfDocument = new PrintedPdfDocument(context, currentAttributes);
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+
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+ for (int i = 0; i < totalpages; i++) {
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+ // Check to see if this page is in the output range.
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+ if (containsPage(pageRanges, i)) {
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+ // check for cancellation
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+ if (isCancelled() || cancellationSignal.isCanceled()) {
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+ return null;
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+ }
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+
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+ final PdfDocument.Page page = mPdfDocument.startPage(i);
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+
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+ // Draw page content for printing
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+ drawPage(page, i);
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+
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+ // Rendering is complete, so page can be finalized.
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+ mPdfDocument.finishPage(page);
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+
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+ writtenPages.append(writtenPages.size(), i);
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+ }
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+ }
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+
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+ // check for cancellation
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+ if (isCancelled() || cancellationSignal.isCanceled()) {
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+ return null;
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+ }
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+
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+ // Write the document.
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+ mPdfDocument.writeTo(new FileOutputStream(destination.getFileDescriptor()));
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+ return null;
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+ } catch (Exception e) {
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+ return e;
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+ } finally {
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+ if (null != mPdfDocument) {
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+ mPdfDocument.close();
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+ }
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+ }
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+ }
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+
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+ @Override
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+ protected void onPostExecute(Throwable throwable) {
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+ super.onPostExecute(throwable);
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+ try {
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+ if (cancellationSignal.isCanceled()) {
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+ // Cancelled.
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+ callback.onWriteCancelled();
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+ } else if (null == throwable) {
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+ PageRange[] writtenPageRange = computeWrittenPageRanges(writtenPages);
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+ // Signal the print framework the document is complete
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+ callback.onWriteFinished(writtenPageRange);
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+ } else {
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+ // Failed.
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+ callback.onWriteFailed(throwable.getMessage());
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+ }
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+ } finally {
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+ writtenPages.clear();
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+ try {
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+ destination.close();
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+ } catch (IOException e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ }
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+ };
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+ mStack.push(asyncTask);
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+ asyncTask.execute();
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+ }
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+
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+ @Override
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+ public void onFinish() {
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+ try {
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+ while (!mStack.empty()) {
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+ try {
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+ AsyncTask asyncTask = mStack.pop();
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+ if ((null != asyncTask) && !asyncTask.isCancelled()) {
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+ asyncTask.cancel(true);
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+ }
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+ } catch (Exception e) {
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+ e.printStackTrace();
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+ }
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+ }
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+ } finally {
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+ if (null != iPrintCallback) {
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+ iPrintCallback.onFinish();
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+ }
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+ super.onFinish();
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+ }
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+ }
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+
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+ /**
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+ * @param ：[pageRanges, page]
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+ * pageRanges书面页面的PageRange数组。
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+ * numPage要检查PageRange数组的页码。
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+ * @return : boolean 如果页面包含在PageRange数组中，则为true。否则为假。
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+ * @methodName ：containsPage created by luozhipeng on 2019-10-11 20:59.
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+ * @description ：检查给定的页码是否包含在PageRange数组中。
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+ */
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+ private boolean containsPage(PageRange[] pageRanges, int numPage) {
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+ for (PageRange pr : pageRanges) {
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+ if ((numPage >= pr.getStart()) && (numPage <= pr.getEnd())) {
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+ return true;
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+ }
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+ }
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+ return false;
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+ }
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+
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+ /**
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+ * @methodName：drawPage created by luozhipeng on 2019-10-11 21:38.
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+ * @description： 页面绘制（渲染）
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+ */
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+ private void drawPage(PdfDocument.Page page, int pagenumber) {
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+ Canvas canvas = page.getCanvas();
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+ Bitmap bitmap = null;
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+ try {
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+ canvas.drawColor(Color.WHITE);
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+ int pageWidth = (int) (72 * (float) currentAttributes.getMediaSize().getWidthMils() / MILS_PER_INCH);
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+ int pageHeight = (int) (72 * (float) currentAttributes.getMediaSize().getHeightMils() / MILS_PER_INCH);
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+
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+ if (null != iPrintCallback) {
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+ bitmap = iPrintCallback.onWriteBitmap(pagenumber, (int) (pageWidth * resolutionScale), isDrawAnnot);
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+ }
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+
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+ if (null != bitmap) {
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+ // 计算页码的缩放比例
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+ float scale = Math.min((float) pageWidth / bitmap.getWidth(), (float) pageHeight / bitmap.getHeight());
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+ if (scale > 1) {
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+ scale = 1;
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+ }
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+ // 取得想要缩放的matrix参数
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+ Matrix matrix = new Matrix();
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+ matrix.postScale(scale, scale);
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+
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+ // 页码居中
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+// int translateX = Math.abs((int) (bitmap.getWidth() * scale) - pageWidth);
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+// int translateY = Math.abs((int) (bitmap.getHeight() * scale) - pageHeight);
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+// matrix.postTranslate(translateX / 2f, translateY / 2f);
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+
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+ canvas.drawBitmap(bitmap, matrix, null);
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+ }
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+
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+// if (isShowTestPage) {
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+// // units are in points (1/72 of an inch)
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+// int titleBaseLine = 72;
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+// int leftMargin = 54;
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+// Paint paint = new Paint();
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+// paint.setColor(Color.RED);
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+// paint.setTextSize(32);
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+// canvas.drawText(String.format(Locale.US, "PageNum: %s;PageWidth: %s", (pagenumber + 1), (int) (pageWidth * resolutionScale)), leftMargin, titleBaseLine, paint);
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+// }
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+ } catch (Exception e) {
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+ canvas.drawColor(Color.WHITE);
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+ } finally {
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+ if ((null != bitmap) && !bitmap.isRecycled()) {
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+ bitmap.recycle();
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+ }
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+ }
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+ }
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+
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+ /**
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+ * @param ：[writtenPages] 一个SparseIntArray，其中包含必须写入的页面。
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+ * @return : android.print.PageRange[] 一个包含结果范围的PageRange数组。
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+ * @methodName ：computeWrittenPageRanges created by luozhipeng on 2019-10-11 21:04.
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+ * @description ：将所选页面转换为以PageRange数组形式写入的函数。
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+ */
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+ private PageRange[] computeWrittenPageRanges(SparseIntArray writtenPages) {
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+ final List<PageRange> pageRanges = new ArrayList<>();
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+
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+ int start = -1;
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+ int end;
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+ final int writtenPageCount = writtenPages.size();
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+ for (int i = 0; i < writtenPageCount; i++) {
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+ if (start < 0) {
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+ start = writtenPages.valueAt(i);
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+ }
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+ int oldEnd = end = start;
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+ while (i < writtenPageCount && (end - oldEnd) <= 1) {
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+ oldEnd = end;
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+ end = writtenPages.valueAt(i);
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+ i++;
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+ }
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+ @SuppressLint("Range") PageRange pageRange = new PageRange(start, end);
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+ pageRanges.add(pageRange);
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+ start = -1;
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+ }
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+
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+ PageRange[] pageRangesArray = new PageRange[pageRanges.size()];
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+ pageRanges.toArray(pageRangesArray);
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+ return pageRangesArray;
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+ }
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+
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+ public interface IPrintCallback extends PrintHelper.OnPrintFinishCallback {
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+ Bitmap onWriteBitmap(int pageNum, int pageWidth, boolean isDrawAnnot);
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+ }
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+}
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