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libpdfviewer
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libpdfviewer: update to PdfViewer 17

This commit is contained in:
Matéo Duparc 2023-09-08 19:47:30 +02:00
parent c74b374ec4 c7241646fe
commit 476f4aa685
Signed by: hardcoresushi
GPG Key ID: AFE384344A45E13A
31 changed files with 2736 additions and 377 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
.github/dependabot.yml vendored
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@ -1,12 +0,0 @@
version: 2
updates:
- package-ecosystem: github-actions
directory: "/"
schedule:
interval: daily
target-branch: main
- package-ecosystem: gradle
directory: "/"
schedule:
interval: daily
target-branch: main

20
.github/workflows/build.yml vendored
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@ -1,20 +0,0 @@
name: Build application
on: [pull_request, push]
jobs:
build:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
with:
submodules: true
- name: Set up JDK 19
uses: actions/setup-java@v3
with:
distribution: 'temurin'
java-version: 19
cache: gradle
- name: Build with Gradle
run: ./gradlew build --no-daemon

11
.github/workflows/validate-gradle-wrapper.yml vendored
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@ -1,11 +0,0 @@
name: Validate Gradle Wrapper
on: [pull_request, push]
jobs:
validation:
name: Validation
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v3
- uses: gradle/wrapper-validation-action@v1

3
.gitmodules vendored
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@ -1,3 +0,0 @@
[submodule "pdfjs-dist"]
path = app/pdfjs-dist
url = https://github.com/mozilla/pdfjs-dist.git

2
LICENSE
View File

@ -1,4 +1,4 @@
Copyright © 2017-2022 GrapheneOS
Copyright © 2017-2023 GrapheneOS
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal

19
app/build.gradle.kts
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@ -13,6 +13,12 @@ plugins {
id("kotlin-android")
}
java {
toolchain {
languageVersion.set(JavaLanguageVersion.of(17))
}
}
android {
if (useKeystoreProperties) {
signingConfigs {
@ -33,7 +39,7 @@ android {
}
compileSdk = 33
buildToolsVersion = "33.0.0"
buildToolsVersion = "33.0.2"
namespace = "app.grapheneos.pdfviewer"
@ -61,20 +67,21 @@ android {
buildFeatures {
viewBinding = true
buildConfig = true
}
}
compileOptions {
sourceCompatibility(JavaVersion.VERSION_11)
targetCompatibility(JavaVersion.VERSION_11)
sourceCompatibility(JavaVersion.VERSION_17)
targetCompatibility(JavaVersion.VERSION_17)
}
kotlinOptions {
jvmTarget = JavaVersion.VERSION_11.toString()
jvmTarget = JavaVersion.VERSION_17.toString()
}
}
dependencies {
implementation("androidx.appcompat:appcompat:1.5.1")
implementation("com.google.android.material:material:1.7.0")
implementation("androidx.appcompat:appcompat:1.6.1")
implementation("com.google.android.material:material:1.9.0")
}

26
app/src/main/assets/viewer.css
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@ -1,3 +1,8 @@
:root {
--text-layer-opacity: 0.2;
--text-layer-foreground: transparent;
}
html, body {
height: 100%;
}
@ -12,6 +17,8 @@ body {
}
#container {
--scale-factor: 1;
width: 100%;
height: 100%;
display: grid;
@ -24,25 +31,26 @@ body {
grid-column-start: 1;
}
canvas, .textLayer {
canvas {
display: inline-block;
position: relative;
}
.textLayer {
text-align: initial;
position: absolute;
overflow: hidden;
opacity: 0.2;
opacity: var(--text-layer-opacity);
line-height: 1;
}
.textLayer span,
.textLayer br {
color: transparent;
color: var(--text-layer-foreground);
position: absolute;
white-space: pre;
cursor: text;
transform-origin: 0% 0%;
transform-origin: 0 0;
}
.textLayer .highlight {
@ -91,3 +99,13 @@ canvas, .textLayer {
.textLayer .endOfContent.active {
top: 0;
}
[data-main-rotation="90"] {
transform: rotate(90deg);
}
[data-main-rotation="180"] {
transform: rotate(180deg);
}
[data-main-rotation="270"] {
transform: rotate(270deg);
}

82
app/src/main/assets/viewer.js
View File

@ -6,7 +6,8 @@ let pdfDoc = null;
let pageRendering = false;
let renderPending = false;
let renderPendingZoom = 0;
const canvas = document.getElementById('content');
const canvas = document.getElementById("content");
const container = document.getElementById("container");
let orientationDegrees = 0;
let zoomRatio = 1;
let textLayerDiv = document.getElementById("text");
@ -19,6 +20,8 @@ let useRender;
const cache = [];
const maxCached = 6;
let isTextLayerVisible = false;
function maybeRenderNextPage() {
if (renderPending) {
pageRendering = false;
@ -61,6 +64,21 @@ function display(newCanvas, zoom) {
}
}
function setLayerTransform(pageWidth, pageHeight, layerDiv) {
const translate = {
X: Math.max(0, pageWidth - document.body.clientWidth) / 2,
Y: Math.max(0, pageHeight - document.body.clientHeight) / 2
};
layerDiv.style.translate = `${translate.X}px ${translate.Y}px`;
}
function getDefaultZoomRatio(page, orientationDegrees) {
const viewport = page.getViewport({scale: 1, rotation: orientationDegrees});
const widthZoomRatio = document.body.clientWidth / viewport.width;
const heightZoomRatio = document.body.clientHeight / viewport.height;
return Math.max(Math.min(widthZoomRatio, heightZoomRatio, channel.getMaxZoomRatio()), channel.getMinZoomRatio());
}
function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
pageRendering = true;
useRender = !prerender;
@ -82,6 +100,8 @@ function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
textLayerDiv.replaceWith(cached.textLayerDiv);
textLayerDiv = cached.textLayerDiv;
setLayerTransform(cached.pageWidth, cached.pageHeight, textLayerDiv);
container.style.setProperty("--scale-factor", newZoomRatio.toString());
}
pageRendering = false;
@ -95,7 +115,15 @@ function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
return;
}
const viewport = page.getViewport({scale: newZoomRatio, rotation: orientationDegrees})
const defaultZoomRatio = getDefaultZoomRatio(page, orientationDegrees);
if (cache.length === 0) {
zoomRatio = defaultZoomRatio;
newZoomRatio = defaultZoomRatio;
channel.setZoomRatio(defaultZoomRatio);
}
const viewport = page.getViewport({scale: newZoomRatio, rotation: orientationDegrees});
if (useRender) {
if (newZoomRatio !== zoomRatio) {
@ -105,7 +133,7 @@ function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
zoomRatio = newZoomRatio;
}
if (zoom == 2) {
if (zoom === 2) {
pageRendering = false;
return;
}
@ -137,10 +165,10 @@ function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
}
render();
const textLayerFrag = document.createDocumentFragment();
const newTextLayerDiv = textLayerDiv.cloneNode();
task = pdfjsLib.renderTextLayer({
textContentStream: page.streamTextContent(),
container: textLayerFrag,
textContentSource: page.streamTextContent(),
container: newTextLayerDiv,
viewport: viewport
});
task.promise.then(function() {
@ -148,24 +176,36 @@ function renderPage(pageNumber, zoom, prerender, prerenderTrigger=0) {
render();
const newTextLayerDiv = textLayerDiv.cloneNode();
newTextLayerDiv.style.height = newCanvas.style.height;
newTextLayerDiv.style.width = newCanvas.style.width;
// We use CSS transform to rotate a text layer div of zero
// degrees rotation. So, when the rotation is 90 or 270
// degrees, set width and height of the text layer div to the
// height and width of the canvas, respectively, to prevent
// text layer misalignment.
if (orientationDegrees % 180 === 0) {
newTextLayerDiv.style.height = newCanvas.style.height;
newTextLayerDiv.style.width = newCanvas.style.width;
} else {
newTextLayerDiv.style.height = newCanvas.style.width;
newTextLayerDiv.style.width = newCanvas.style.height;
}
setLayerTransform(viewport.width, viewport.height, newTextLayerDiv);
if (useRender) {
textLayerDiv.replaceWith(newTextLayerDiv);
textLayerDiv = newTextLayerDiv;
container.style.setProperty("--scale-factor", newZoomRatio.toString());
}
newTextLayerDiv.appendChild(textLayerFrag);
if (cache.length === maxCached) {
cache.shift()
cache.shift();
}
cache.push({
pageNumber: pageNumber,
zoomRatio: newZoomRatio,
orientationDegrees: orientationDegrees,
canvas: newCanvas,
textLayerDiv: newTextLayerDiv
textLayerDiv: newTextLayerDiv,
pageWidth: viewport.width,
pageHeight: viewport.height
});
pageRendering = false;
@ -198,6 +238,18 @@ function isTextSelected() {
return window.getSelection().toString() !== "";
}
function toggleTextLayerVisibility() {
let textLayerForeground = "red";
let textLayerOpacity = 1;
if (isTextLayerVisible) {
textLayerForeground = "transparent";
textLayerOpacity = 0.2;
}
document.documentElement.style.setProperty("--text-layer-foreground", textLayerForeground);
document.documentElement.style.setProperty("--text-layer-opacity", textLayerOpacity.toString());
isTextLayerVisible = !isTextLayerVisible;
}
function loadDocument() {
const pdfPassword = channel.getPassword();
const loadingTask = pdfjsLib.getDocument({ url: "https://localhost/placeholder.pdf", password: pdfPassword });
@ -207,7 +259,7 @@ function loadDocument() {
} else if (error === pdfjsLib.PasswordResponses.INCORRECT_PASSWORD) {
channel.invalidPassword();
}
}
};
loadingTask.promise.then(function (newDoc) {
channel.onLoaded();
@ -223,3 +275,7 @@ function loadDocument() {
console.error(reason.name + ": " + reason.message);
});
}
window.onresize = () => {
setLayerTransform(canvas.clientWidth, canvas.clientHeight, textLayerDiv);
};

73
app/src/main/java/app/grapheneos/pdfviewer/PdfViewer.java
View File

@ -42,12 +42,14 @@ import app.grapheneos.pdfviewer.fragment.DocumentPropertiesFragment;
import app.grapheneos.pdfviewer.fragment.PasswordPromptFragment;
import app.grapheneos.pdfviewer.fragment.JumpToPageFragment;
import app.grapheneos.pdfviewer.ktx.ViewKt;
import app.grapheneos.pdfviewer.loader.DocumentPropertiesLoader;
import app.grapheneos.pdfviewer.loader.DocumentPropertiesAsyncTaskLoader;
import app.grapheneos.pdfviewer.viewModel.PasswordStatus;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
@ -55,7 +57,7 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
public static final String TAG = "PdfViewer";
private static final String KEY_PROPERTIES = "properties";
private static final int MIN_WEBVIEW_RELEASE = 89;
private static final int MIN_WEBVIEW_RELEASE = 92;
private static final String CONTENT_SECURITY_POLICY =
"default-src 'none'; " +
@ -98,7 +100,7 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
"usb=(), " +
"xr-spatial-tracking=()";
private static final float MIN_ZOOM_RATIO = 0.5f;
private static final float MIN_ZOOM_RATIO = 0.2f;
private static final float MAX_ZOOM_RATIO = 1.5f;
private static final int ALPHA_LOW = 130;
private static final int ALPHA_HIGH = 255;
@ -136,6 +138,21 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
return mZoomRatio;
}
@JavascriptInterface
public void setZoomRatio(final float ratio) {
mZoomRatio = Math.max(Math.min(ratio, MAX_ZOOM_RATIO), MIN_ZOOM_RATIO);
}
@JavascriptInterface
public float getMinZoomRatio() {
return MIN_ZOOM_RATIO;
}
@JavascriptInterface
public float getMaxZoomRatio() {
return MAX_ZOOM_RATIO;
}
@JavascriptInterface
public int getDocumentOrientationDegrees() {
return mDocumentOrientationDegrees;
@ -155,7 +172,7 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
final Bundle args = new Bundle();
args.putString(KEY_PROPERTIES, properties);
activity.runOnUiThread(() -> LoaderManager.getInstance(PdfViewer.this.activity).restartLoader(DocumentPropertiesLoader.ID, args, PdfViewer.this));
activity.runOnUiThread(() -> LoaderManager.getInstance(PdfViewer.this.activity).restartLoader(DocumentPropertiesAsyncTaskLoader.ID, args, PdfViewer.this));
}
@JavascriptInterface
@ -354,6 +371,15 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
return mPasswordPromptFragment;
}
private void setToolbarTitleWithDocumentName() {
String documentName = getCurrentDocumentName();
if (documentName != null && !documentName.isEmpty()) {
activity.getSupportActionBar().setTitle(documentName);
} else {
activity.getSupportActionBar().setTitle(R.string.app_name);
}
}
public void onResume() {
// The user could have left the activity to update the WebView
activity.invalidateOptionsMenu();
@ -379,13 +405,14 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
@NonNull
@Override
public Loader<List<CharSequence>> onCreateLoader(int id, Bundle args) {
return new DocumentPropertiesLoader(activity, args.getString(KEY_PROPERTIES), mNumPages, fileName, fileSize);
return new DocumentPropertiesAsyncTaskLoader(activity, args.getString(KEY_PROPERTIES), mNumPages, fileName, fileSize);
}
@Override
public void onLoadFinished(@NonNull Loader<List<CharSequence>> loader, List<CharSequence> data) {
mDocumentProperties = data;
LoaderManager.getInstance(activity).destroyLoader(DocumentPropertiesLoader.ID);
setToolbarTitleWithDocumentName();
LoaderManager.getInstance(activity).destroyLoader(DocumentPropertiesAsyncTaskLoader.ID);
}
@Override
@ -485,12 +512,19 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
public void onCreateOptionMenu(@NonNull Menu menu) {
MenuInflater inflater = activity.getMenuInflater();
inflater.inflate(R.menu.pdf_viewer, menu);
if (BuildConfig.DEBUG) {
inflater.inflate(R.menu.pdf_viewer_debug, menu);
}
}
public boolean onPrepareOptionsMenu(@NonNull Menu menu) {
final int[] ids = {R.id.action_jump_to_page, R.id.action_next, R.id.action_previous,
R.id.action_first, R.id.action_last, R.id.action_rotate_clockwise,
R.id.action_rotate_counterclockwise, R.id.action_view_document_properties};
final ArrayList<Integer> ids = new ArrayList<>(Arrays.asList(R.id.action_jump_to_page,
R.id.action_next, R.id.action_previous, R.id.action_first, R.id.action_last,
R.id.action_rotate_clockwise, R.id.action_rotate_counterclockwise,
R.id.action_view_document_properties));
if (BuildConfig.DEBUG) {
ids.add(R.id.debug_action_toggle_text_layer_visibility);
}
if (mDocumentState < STATE_LOADED) {
for (final int id : ids) {
final MenuItem item = menu.findItem(id);
@ -540,10 +574,29 @@ public class PdfViewer implements LoaderManager.LoaderCallbacks<List<CharSequenc
.show(activity.getSupportFragmentManager(), DocumentPropertiesFragment.TAG);
return true;
} else if (itemId == R.id.action_jump_to_page) {
JumpToPageFragment.newInstance(this)
new JumpToPageFragment(this)
.show(activity.getSupportFragmentManager(), JumpToPageFragment.TAG);
return true;
} else if (itemId == R.id.debug_action_toggle_text_layer_visibility) {
binding.webview.evaluateJavascript("toggleTextLayerVisibility()", null);
return true;
}
return false;
}
private String getCurrentDocumentName() {
if (mDocumentProperties == null || mDocumentProperties.isEmpty()) return "";
String fileName = "";
String title = "";
for (CharSequence property : mDocumentProperties) {
if (property.toString().startsWith("File name:")) {
fileName = property.toString().replace("File name:", "");
}
if (property.toString().startsWith("Title:-")) {
title = property.toString().replace("Title:-", "");
}
}
return fileName.length() > 2 ? fileName : title;
}
}

15
app/src/main/java/app/grapheneos/pdfviewer/Utils.java
View File

@ -9,21 +9,6 @@ import java.text.ParseException;
import java.util.Calendar;
public class Utils {
public static String parseFileSize(long fileSize) {
final double kb = fileSize / 1000d;
if (kb == 0d) {
return fileSize + " Bytes";
}
final DecimalFormat format = new DecimalFormat("#.##");
format.setRoundingMode(RoundingMode.CEILING);
if (kb < 1000) {
return format.format(kb) + " kB (" + fileSize + " Bytes)";
}
return format.format(kb / 1000) + " MB (" + fileSize + " Bytes)";
}
private static int parseIntSafely(String field) throws ParseException {
try {

60
app/src/main/java/app/grapheneos/pdfviewer/fragment/DocumentPropertiesFragment.java
View File

@ -1,60 +0,0 @@
package app.grapheneos.pdfviewer.fragment;
import android.app.Activity;
import android.app.Dialog;
import android.os.Bundle;
import android.widget.ArrayAdapter;
import androidx.annotation.NonNull;
import androidx.fragment.app.DialogFragment;
import com.google.android.material.dialog.MaterialAlertDialogBuilder;
import app.grapheneos.pdfviewer.R;
import java.util.ArrayList;
import java.util.List;
public class DocumentPropertiesFragment extends DialogFragment {
public static final String TAG = "DocumentPropertiesFragment";
private static final String KEY_DOCUMENT_PROPERTIES = "document_properties";
private List<String> mDocumentProperties;
public static DocumentPropertiesFragment newInstance(final List<CharSequence> metaData) {
final DocumentPropertiesFragment fragment = new DocumentPropertiesFragment();
final Bundle args = new Bundle();
args.putCharSequenceArrayList(KEY_DOCUMENT_PROPERTIES, (ArrayList<CharSequence>) metaData);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mDocumentProperties = getArguments().getStringArrayList(KEY_DOCUMENT_PROPERTIES);
}
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
final Activity activity = requireActivity();
final MaterialAlertDialogBuilder dialog = new MaterialAlertDialogBuilder(activity)
.setPositiveButton(android.R.string.ok, null);
if (mDocumentProperties != null) {
dialog.setTitle(getString(R.string.action_view_document_properties));
dialog.setAdapter(new ArrayAdapter<>(activity, android.R.layout.simple_list_item_1,
mDocumentProperties), null);
} else {
dialog.setTitle(R.string.document_properties_retrieval_failed);
}
return dialog.create();
}
}

53
app/src/main/java/app/grapheneos/pdfviewer/fragment/DocumentPropertiesFragment.kt Normal file
View File

@ -0,0 +1,53 @@
package app.grapheneos.pdfviewer.fragment
import android.app.Dialog
import android.os.Bundle
import android.widget.ArrayAdapter
import androidx.fragment.app.DialogFragment
import app.grapheneos.pdfviewer.R
import com.google.android.material.dialog.MaterialAlertDialogBuilder
class DocumentPropertiesFragment : DialogFragment() {
// TODO replace with nav args once the `PdfViewer` activity is converted to kotlin
private val mDocumentProperties: List<String> by lazy {
requireArguments().getStringArrayList(KEY_DOCUMENT_PROPERTIES)?.toList() ?: emptyList()
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return MaterialAlertDialogBuilder(requireActivity())
.setPositiveButton(android.R.string.ok, null).apply {
if (mDocumentProperties.isNotEmpty()) {
setTitle(getString(R.string.action_view_document_properties))
setAdapter(
ArrayAdapter(
requireActivity(),
android.R.layout.simple_list_item_1,
mDocumentProperties
), null
)
} else {
setTitle(R.string.document_properties_retrieval_failed)
}
}
.create()
}
companion object {
const val TAG = "DocumentPropertiesFragment"
private const val KEY_DOCUMENT_PROPERTIES = "document_properties"
@JvmStatic
fun newInstance(metaData: List<CharSequence>): DocumentPropertiesFragment {
val fragment = DocumentPropertiesFragment()
val args = Bundle()
args.putCharSequenceArrayList(
KEY_DOCUMENT_PROPERTIES,
metaData as ArrayList<CharSequence>
)
fragment.arguments = args
return fragment
}
}
}

62
app/src/main/java/app/grapheneos/pdfviewer/fragment/JumpToPageFragment.java
View File

@ -1,62 +0,0 @@
package app.grapheneos.pdfviewer.fragment;
import android.app.Dialog;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.FrameLayout;
import android.widget.NumberPicker;
import androidx.annotation.NonNull;
import androidx.fragment.app.DialogFragment;
import com.google.android.material.dialog.MaterialAlertDialogBuilder;
import app.grapheneos.pdfviewer.PdfViewer;
public class JumpToPageFragment extends DialogFragment {
public static final String TAG = "JumpToPageFragment";
private final static String STATE_PICKER_CUR = "picker_cur";
private final static String STATE_PICKER_MIN = "picker_min";
private final static String STATE_PICKER_MAX = "picker_max";
private NumberPicker mPicker;
PdfViewer pdfViewer;
public static JumpToPageFragment newInstance(PdfViewer pdfViewer) {
JumpToPageFragment f = new JumpToPageFragment();
f.pdfViewer = pdfViewer;
return f;
}
@NonNull
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
mPicker = new NumberPicker(getActivity());
mPicker.setMinValue(1);
mPicker.setMaxValue(pdfViewer.mNumPages);
mPicker.setValue(pdfViewer.mPage);
final FrameLayout layout = new FrameLayout(getActivity());
layout.addView(mPicker, new FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT,
FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER));
return new MaterialAlertDialogBuilder(requireActivity())
.setView(layout)
.setPositiveButton(android.R.string.ok, (dialogInterface, i) -> {
mPicker.clearFocus();
pdfViewer.onJumpToPageInDocument(mPicker.getValue());
})
.setNegativeButton(android.R.string.cancel, null)
.create();
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putInt(STATE_PICKER_MIN, mPicker.getMinValue());
outState.putInt(STATE_PICKER_MAX, mPicker.getMaxValue());
outState.putInt(STATE_PICKER_CUR, mPicker.getValue());
}
}

58
app/src/main/java/app/grapheneos/pdfviewer/fragment/JumpToPageFragment.kt Normal file
View File

@ -0,0 +1,58 @@
package app.grapheneos.pdfviewer.fragment
import android.app.Dialog
import android.content.DialogInterface
import android.os.Bundle
import android.view.Gravity
import android.widget.FrameLayout
import android.widget.NumberPicker
import androidx.fragment.app.DialogFragment
import app.grapheneos.pdfviewer.PdfViewer
import com.google.android.material.dialog.MaterialAlertDialogBuilder
class JumpToPageFragment(private val pdfViewer: PdfViewer) : DialogFragment() {
companion object {
const val TAG = "JumpToPageFragment"
private const val STATE_PICKER_CUR = "picker_cur"
private const val STATE_PICKER_MIN = "picker_min"
private const val STATE_PICKER_MAX = "picker_max"
}
private val mPicker: NumberPicker by lazy { NumberPicker(requireActivity()) }
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
if (savedInstanceState != null) {
mPicker.minValue = savedInstanceState.getInt(STATE_PICKER_MIN)
mPicker.maxValue = savedInstanceState.getInt(STATE_PICKER_MAX)
mPicker.value = savedInstanceState.getInt(STATE_PICKER_CUR)
} else {
mPicker.minValue = 1
mPicker.maxValue = pdfViewer.mNumPages
mPicker.value = pdfViewer.mPage
}
val layout = FrameLayout(requireActivity())
layout.addView(
mPicker, FrameLayout.LayoutParams(
FrameLayout.LayoutParams.WRAP_CONTENT,
FrameLayout.LayoutParams.WRAP_CONTENT,
Gravity.CENTER
)
)
return MaterialAlertDialogBuilder(requireActivity())
.setView(layout)
.setPositiveButton(android.R.string.ok) { _: DialogInterface?, _: Int ->
mPicker.clearFocus()
pdfViewer.onJumpToPageInDocument(mPicker.value)
}
.setNegativeButton(android.R.string.cancel, null)
.create()
}
override fun onSaveInstanceState(outState: Bundle) {
outState.putInt(STATE_PICKER_MIN, mPicker.minValue)
outState.putInt(STATE_PICKER_MAX, mPicker.maxValue)
outState.putInt(STATE_PICKER_CUR, mPicker.value)
}
}

51
app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesAsyncTaskLoader.java Normal file
View File

@ -0,0 +1,51 @@
package app.grapheneos.pdfviewer.loader;
import android.content.Context;
import androidx.annotation.Nullable;
import androidx.loader.content.AsyncTaskLoader;
import java.util.List;
public class DocumentPropertiesAsyncTaskLoader extends AsyncTaskLoader<List<CharSequence>> {
public static final String TAG = "DocumentPropertiesLoader";
public static final int ID = 1;
private final String mProperties;
private final int mNumPages;
String fileName;
Long fileSize;
public DocumentPropertiesAsyncTaskLoader(Context context, String properties, int numPages, String fileName, Long fileSize) {
super(context);
mProperties = properties;
mNumPages = numPages;
this.fileName = fileName;
this.fileSize = fileSize;
}
@Override
protected void onStartLoading() {
forceLoad();
}
@Nullable
@Override
public List<CharSequence> loadInBackground() {
DocumentPropertiesLoader loader = new DocumentPropertiesLoader(
getContext(),
mProperties,
mNumPages,
fileName,
fileSize
);
return loader.loadAsList();
}
}

115
app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.java
View File

@ -1,115 +0,0 @@
package app.grapheneos.pdfviewer.loader;
import android.content.Context;
import android.graphics.Typeface;
import android.text.SpannableStringBuilder;
import android.text.Spanned;
import android.text.style.StyleSpan;
import android.util.Log;
import androidx.loader.content.AsyncTaskLoader;
import org.json.JSONException;
import org.json.JSONObject;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;
import app.grapheneos.pdfviewer.R;
import app.grapheneos.pdfviewer.Utils;
public class DocumentPropertiesLoader extends AsyncTaskLoader<List<CharSequence>> {
public static final String TAG = "DocumentPropertiesLoader";
public static final int ID = 1;
private final String mProperties;
private final int mNumPages;
String fileName;
Long fileSize;
public DocumentPropertiesLoader(Context context, String properties, int numPages, String fileName, Long fileSize) {
super(context);
mProperties = properties;
mNumPages = numPages;
this.fileName = fileName;
this.fileSize = fileSize;
}
@Override
public List<CharSequence> loadInBackground() {
final Context context = getContext();
final String[] names = context.getResources().getStringArray(R.array.property_names);
final List<CharSequence> properties = new ArrayList<>(names.length);
properties.add(getProperty(null, names[0], fileName));
properties.add(getProperty(null, names[1], Utils.parseFileSize(fileSize)));
try {
final JSONObject json = new JSONObject(mProperties);
properties.add(getProperty(json, names[2], "Title"));
properties.add(getProperty(json, names[3], "Author"));
properties.add(getProperty(json, names[4], "Subject"));
properties.add(getProperty(json, names[5], "Keywords"));
properties.add(getProperty(json, names[6], "CreationDate"));
properties.add(getProperty(json, names[7], "ModDate"));
properties.add(getProperty(json, names[8], "Producer"));
properties.add(getProperty(json, names[9], "Creator"));
properties.add(getProperty(json, names[10], "PDFFormatVersion"));
properties.add(getProperty(null, names[11], String.valueOf(mNumPages)));
return properties;
} catch (JSONException e) {
e.printStackTrace();
}
return null;
}
@Override
public void deliverResult(List<CharSequence> properties) {
if (!isReset() && isStarted()) {
super.deliverResult(properties);
}
}
@Override
protected void onStartLoading() {
forceLoad();
}
@Override
protected void onStopLoading() {
cancelLoad();
}
@Override
protected void onReset() {
super.onReset();
onStopLoading();
}
private CharSequence getProperty(final JSONObject json, String name, String specName) {
final SpannableStringBuilder property = new SpannableStringBuilder(name).append(":\n");
final String value = json != null ? json.optString(specName, "-") : specName;
if (specName != null && specName.endsWith("Date")) {
final Context context = getContext();
try {
property.append(value.equals("-") ? value : Utils.parseDate(value));
} catch (ParseException e) {
Log.w(TAG, e.getMessage() + " for " + value + " at offset: " + e.getErrorOffset());
property.append(context.getString(R.string.document_properties_invalid_date));
}
} else {
property.append(value);
}
property.setSpan(new StyleSpan(Typeface.BOLD), 0, name.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
return property;
}
}

88
app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentPropertiesLoader.kt Normal file
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@ -0,0 +1,88 @@
package app.grapheneos.pdfviewer.loader
import android.content.Context
import android.graphics.Typeface
import android.text.SpannableStringBuilder
import android.text.Spanned
import android.text.format.Formatter
import android.text.style.StyleSpan
import android.util.Log
import app.grapheneos.pdfviewer.R
import org.json.JSONException
class DocumentPropertiesLoader(
private val context: Context,
private val properties: String,
private val numPages: Int,
private val fileName: String,
private val fileSize: Long,
) {
fun loadAsList(): List<CharSequence> {
return load().map { item ->
val name = context.getString(item.key.nameResource)
val value = item.value
SpannableStringBuilder()
.append(name)
.append(":\n")
.append(value)
.apply {
setSpan(
StyleSpan(Typeface.BOLD),
0,
name.length,
Spanned.SPAN_EXCLUSIVE_EXCLUSIVE
)
}
}
}
private fun load(): Map<DocumentProperty, String> {
val result = mutableMapOf<DocumentProperty, String>()
result.addFileProperties()
result.addPageSizeProperty()
result.addPDFJsProperties()
return result
}
private fun MutableMap<DocumentProperty, String>.addPageSizeProperty() {
this[DocumentProperty.Pages] = java.lang.String.valueOf(numPages)
}
private fun MutableMap<DocumentProperty, String>.addFileProperties() {
putAll(getFileProperties())
}
private fun MutableMap<DocumentProperty, String>.addPDFJsProperties() {
putAll(getPDFJsProperties())
}
private fun getPDFJsProperties(): Map<DocumentProperty, String> {
return try {
PDFJsPropertiesToDocumentPropertyConverter(
properties,
context.getString(R.string.document_properties_invalid_date),
parseExceptionListener = { parseException, value ->
Log.w(
DocumentPropertiesAsyncTaskLoader.TAG,
"${parseException.message} for $value at offset: ${parseException.errorOffset}"
)
}
).convert()
} catch (e: JSONException) {
Log.w(
DocumentPropertiesAsyncTaskLoader.TAG,
"invalid properties"
)
emptyMap()
}
}
private fun getFileProperties(): Map<DocumentProperty, String> {
val collections = mutableMapOf<DocumentProperty, String>()
collections[DocumentProperty.FileName] = fileName
collections[DocumentProperty.FileSize] = Formatter.formatFileSize(context, fileSize)
return collections
}
}

35
app/src/main/java/app/grapheneos/pdfviewer/loader/DocumentProperty.kt Normal file
View File

@ -0,0 +1,35 @@
package app.grapheneos.pdfviewer.loader
import androidx.annotation.StringRes
import app.grapheneos.pdfviewer.R
private const val TITLE_KEY = "Title"
private const val AUTHOR_KEY = "Author"
private const val SUBJECT_KEY = "Subject"
private const val KEYWORDS_KEY = "Keywords"
private const val CREATION_DATE_KEY = "CreationDate"
private const val MODIFY_DATE_KEY = "ModDate"
private const val PRODUCER_KEY = "Producer"
private const val CREATOR_KEY = "Creator"
private const val PDF_VERSION_KEY = "PDFFormatVersion"
const val DEFAULT_VALUE = "-"
enum class DocumentProperty(
val key: String = "",
@StringRes val nameResource: Int,
val isDate: Boolean = false
) {
FileName(key = "", nameResource = R.string.file_name),
FileSize(key = "", nameResource = R.string.file_size),
Pages(key = "", nameResource = R.string.pages),
Title(key = TITLE_KEY, nameResource = R.string.title),
Author(key = AUTHOR_KEY, nameResource = R.string.author),
Subject(key = SUBJECT_KEY, nameResource = R.string.subject),
Keywords(key = KEYWORDS_KEY, nameResource = R.string.keywords),
CreationDate(key = CREATION_DATE_KEY, nameResource = R.string.creation_date, isDate = true),
ModifyDate(key = MODIFY_DATE_KEY, nameResource = R.string.modify_date, isDate = true),
Producer(key = PRODUCER_KEY, nameResource = R.string.producer),
Creator(key = CREATOR_KEY, nameResource = R.string.creator),
PDFVersion(key = PDF_VERSION_KEY, nameResource = R.string.pdf_version);
}

47
app/src/main/java/app/grapheneos/pdfviewer/loader/PDFJsPropertiesToDocumentPropertyConverter.kt Normal file
View File

@ -0,0 +1,47 @@
package app.grapheneos.pdfviewer.loader
import app.grapheneos.pdfviewer.Utils
import org.json.JSONException
import org.json.JSONObject
import java.text.ParseException
import kotlin.jvm.Throws
class PDFJsPropertiesToDocumentPropertyConverter(
private val properties: String,
private val propertyInvalidDate: String,
private val parseExceptionListener: (e: ParseException, value: String) -> Unit
) {
@Throws(JSONException::class)
fun convert(): Map<DocumentProperty, String> {
val result = mutableMapOf<DocumentProperty, String>()
val json = JSONObject(properties)
addJsonProperties(json, result)
return result
}
private fun addJsonProperties(
json: JSONObject,
collections: MutableMap<DocumentProperty, String>
) {
for (documentProperty in DocumentProperty.values()) {
val key = documentProperty.key
if (key.isEmpty()) continue
val value = json.optString(key, DEFAULT_VALUE)
collections[documentProperty] = prettify(documentProperty, value)
}
}
private fun prettify(property: DocumentProperty, value: String): String {
if (value != DEFAULT_VALUE && property.isDate) {
return try {
Utils.parseDate(value)
} catch (parseException: ParseException) {
parseExceptionListener.invoke(parseException, value)
propertyInvalidDate
}
}
return value
}
}

4
app/src/main/res/menu/pdf_viewer.xml
View File

@ -11,13 +11,13 @@
android:id="@+id/action_previous"
android:icon="@drawable/ic_navigate_before_24dp"
android:title="@string/action_previous"
app:showAsAction="ifRoom" />
app:showAsAction="always" />
<item
android:id="@+id/action_next"
android:icon="@drawable/ic_navigate_next_24dp"
android:title="@string/action_next"
app:showAsAction="ifRoom" />
app:showAsAction="always" />
<item
android:id="@+id/action_first"

10
app/src/main/res/menu/pdf_viewer_debug.xml Normal file
View File

@ -0,0 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:id="@+id/debug_action_toggle_text_layer_visibility"
android:title="@string/debug_action_toggle_text_layer_visibility"
app:showAsAction="never" />
</menu>

17
app/src/main/res/values/arrays.xml
View File

@ -1,17 +0,0 @@
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string-array name="property_names">
<item>File name</item>
<item>File size</item>
<item>Title</item>
<item>Author</item>
<item>Subject</item>
<item>Keywords</item>
<item>Creation date</item>
<item>Modify date</item>
<item>Producer</item>
<item>Creator</item>
<item>PDF version</item>
<item>Pages</item>
</string-array>
</resources>

15
app/src/main/res/values/strings.xml
View File

@ -11,6 +11,8 @@
<string name="action_rotate_counterclockwise">Rotate counterclockwise</string>
<string name="action_view_document_properties">Properties</string>
<string name="debug_action_toggle_text_layer_visibility">Toggle text layer visibility</string>
<string name="document_properties_invalid_date">Invalid date</string>
<string name="document_properties_retrieval_failed">Failed to obtain document metadata</string>
@ -21,4 +23,17 @@
<string name="password_prompt_description">Enter the password to decrypt this PDF file</string>
<string name="open">Open</string>
<string name="cancel">Cancel</string>
<string name="file_name">File name</string>
<string name="file_size">File size</string>
<string name="title">Title</string>
<string name="author">Author</string>
<string name="subject">Subject</string>
<string name="keywords">Keywords</string>
<string name="creation_date">Creation date</string>
<string name="modify_date">Modify date</string>
<string name="producer">Producer</string>
<string name="creator">Creator</string>
<string name="pdf_version">PDF version</string>
<string name="pages">Pages</string>
</resources>

18
build.gradle.kts
View File

@ -1,18 +1,6 @@
buildscript {
repositories {
// dependabot cannot handle google()
maven {
url = uri("https://dl.google.com/dl/android/maven2")
}
// dependabot cannot handle mavenCentral()
maven {
url = uri("https://repo.maven.apache.org/maven2")
}
}
dependencies {
classpath("com.android.tools.build:gradle:7.3.1")
classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.7.22")
}
plugins {
id("com.android.application") apply false
id("org.jetbrains.kotlin.android") apply false
}
allprojects {

1
gradle.properties
View File

@ -1,4 +1,3 @@
org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
android.useAndroidX=true
android.enableR8.fullMode=true
kotlin.code.style=official

2179
gradle/verification-metadata.xml Normal file
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gradle/wrapper/gradle-wrapper.jar vendored
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6
gradle/wrapper/gradle-wrapper.properties vendored
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@ -1,6 +1,8 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionSha256Sum=f6b8596b10cce501591e92f229816aa4046424f3b24d771751b06779d58c8ec4
distributionUrl=https\://services.gradle.org/distributions/gradle-7.5.1-bin.zip
distributionSha256Sum=38f66cd6eef217b4c35855bb11ea4e9fbc53594ccccb5fb82dfd317ef8c2c5a3
distributionUrl=https\://services.gradle.org/distributions/gradle-8.2-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

24
gradlew vendored
View File

@ -55,7 +55,7 @@
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
@ -80,13 +80,10 @@ do
esac
done
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
APP_NAME="Gradle"
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
@ -133,22 +130,29 @@ location of your Java installation."
fi
else
JAVACMD=java
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
@ -193,6 +197,10 @@ if "$cygwin" || "$msys" ; then
done
fi
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Collect all arguments for the java command;
# * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
# shell script including quotes and variable substitutions, so put them in

1
gradlew.bat vendored
View File

@ -26,6 +26,7 @@ if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%

6
settings.gradle.kts
View File

@ -1,3 +1,9 @@
pluginManagement {
repositories {
google()
mavenCentral()
}
}
dependencyResolutionManagement {
repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
repositories {