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adds the possibility to create a pdf from selected images to GalleryG…
…ridActivity
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Jun 8, 2020
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84 changes: 84 additions & 0 deletions
84
app/src/main/java/com/todobom/opennotescanner/helpers/PdfHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| package com.todobom.opennotescanner.helpers; | ||
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| import android.content.Context; | ||
| import android.content.SharedPreferences; | ||
| import android.preference.PreferenceManager; | ||
| import android.widget.Toast; | ||
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| import com.itextpdf.io.image.ImageData; | ||
| import com.itextpdf.io.image.ImageDataFactory; | ||
| import com.itextpdf.kernel.geom.PageSize; | ||
| import com.itextpdf.kernel.pdf.PdfDocument; | ||
| import com.itextpdf.kernel.pdf.PdfWriter; | ||
| import com.itextpdf.layout.Document; | ||
| import com.itextpdf.layout.element.Image; | ||
| import com.todobom.opennotescanner.R; | ||
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|
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| import java.io.File; | ||
| import java.io.FileNotFoundException; | ||
| import java.net.MalformedURLException; | ||
| import java.text.SimpleDateFormat; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.Date; | ||
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| public class PdfHelper { | ||
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| public static void mergeImagesToPdf(Context applicationContext, ArrayList<String> files) { | ||
| //TODO move this to background thread | ||
| if (files.isEmpty()) { | ||
| Toast | ||
| .makeText(applicationContext, applicationContext.getString(R.string.no_files_selected), Toast.LENGTH_SHORT) | ||
| .show(); | ||
| return; | ||
| } | ||
| String outputFile = "PDF-" | ||
| + new SimpleDateFormat("yyyyMMdd-HHmmss").format(new Date()) + ".pdf"; | ||
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| SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(applicationContext); | ||
| String pdfFilePath = new File( | ||
| android.os.Environment.getExternalStorageDirectory() | ||
| + File.separator + sharedPreferences.getString("storage_folder", "OpenNoteScanner") | ||
| , outputFile) | ||
| .getAbsolutePath(); | ||
|
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| PdfWriter pdfWriter = null; | ||
| try { | ||
| pdfWriter = new PdfWriter(pdfFilePath); | ||
| } catch (FileNotFoundException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| if(pdfWriter == null){ | ||
| return; | ||
| } | ||
|
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| PdfDocument pdfDocument = new PdfDocument(pdfWriter); | ||
| Document document = new Document(pdfDocument); | ||
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| Collections.sort(files); | ||
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| for (String file : files) { | ||
| ImageData imageData = null; | ||
| try { | ||
| imageData = ImageDataFactory.create(file); | ||
| } catch (MalformedURLException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| if(imageData == null){ | ||
| return; | ||
| } | ||
| Image image = new Image(imageData); | ||
| pdfDocument.addNewPage(new PageSize(image.getImageWidth(), image.getImageHeight())); | ||
| document.add(image); | ||
| } | ||
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| document.close(); | ||
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| Toast | ||
| .makeText(applicationContext, pdfFilePath, Toast.LENGTH_SHORT) | ||
| .show(); | ||
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| } | ||
|
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| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,11 @@ | ||
| <!-- Taken from material.io | ||
| Apache license version 2.0 applies --> | ||
| <vector xmlns:android="http://schemas.android.com/apk/res/android" | ||
| android:width="24dp" | ||
| android:height="24dp" | ||
| android:viewportWidth="24.0" | ||
| android:viewportHeight="24.0"> | ||
| <path | ||
| android:fillColor="#FF000000" | ||
| android:pathData="M20,2L8,2c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM11.5,9.5c0,0.83 -0.67,1.5 -1.5,1.5L9,11v2L7.5,13L7.5,7L10,7c0.83,0 1.5,0.67 1.5,1.5v1zM16.5,11.5c0,0.83 -0.67,1.5 -1.5,1.5h-2.5L12.5,7L15,7c0.83,0 1.5,0.67 1.5,1.5v3zM20.5,8.5L19,8.5v1h1.5L20.5,11L19,11v2h-1.5L17.5,7h3v1.5zM9,9.5h1v-1L9,8.5v1zM4,6L2,6v14c0,1.1 0.9,2 2,2h14v-2L4,20L4,6zM14,11.5h1v-3h-1v3z"/> | ||
| </vector> |
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