gentoo-ebuilds/app-text/diffpdf/files/diffpdf-2.1.3-qt6.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..fbaf333
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,25 @@
+cmake_minimum_required(VERSION 3.16)
+project(diffpdf CXX)
+
+find_package(Qt6 REQUIRED COMPONENTS Gui LinguistTools PrintSupport Widgets)
+find_package(PkgConfig REQUIRED)
+pkg_search_module(PopplerQt6 REQUIRED IMPORTED_TARGET poppler-qt6>=22.12.0)
+
+qt_standard_project_setup(REQUIRES 6.4.2 I18N_TRANSLATED_LANGUAGES cz de es fr)
+
+file(GLOB DiffPDF_SOURCES CONFIGURE_DEPENDS
+    "${CMAKE_CURRENT_SOURCE_DIR}/*.cpp"
+    "${CMAKE_CURRENT_SOURCE_DIR}/*.hpp"
+)
+qt_add_executable(diffpdf ${DiffPDF_SOURCES})
+target_link_libraries(diffpdf
+  PRIVATE
+    PkgConfig::PopplerQt6
+    Qt6::Core
+    Qt6::PrintSupport
+    Qt6::Widgets
+)
+qt_add_translations(diffpdf RESOURCE_PREFIX "/")
+qt_add_binary_resources(diffpdf_resources resources.qrc)
+add_dependencies(diffpdf diffpdf_resources)
+install(TARGETS diffpdf)
diff --git a/diffpdf_cz.ts b/diffpdf_cz.ts
index 66f718c..36b313f 100644
--- a/diffpdf_cz.ts
+++ b/diffpdf_cz.ts
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
 <TS version="2.0" language="cs_CZ">
-<defaultcodec>UTF-8</defaultcodec>
 <context>
     <name>AboutForm</name>
     <message>
diff --git a/diffpdf_de.ts b/diffpdf_de.ts
index 6b8ee47..3daf0cc 100644
--- a/diffpdf_de.ts
+++ b/diffpdf_de.ts
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
 <TS version="2.0" language="de_DE">
-<defaultcodec>UTF-8</defaultcodec>
 <context>
     <name>AboutForm</name>
     <message>
diff --git a/diffpdf_es.ts b/diffpdf_es.ts
index a35941f..e8c9d8f 100644
--- a/diffpdf_es.ts
+++ b/diffpdf_es.ts
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
 <TS version="2.0" language="es_ES">
-<defaultcodec>UTF-8</defaultcodec>
 <context>
     <name>AboutForm</name>
     <message>
diff --git a/diffpdf_fr.ts b/diffpdf_fr.ts
index 815e9c4..3e3d5e7 100644
--- a/diffpdf_fr.ts
+++ b/diffpdf_fr.ts
@@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE TS>
 <TS version="2.0">
-<defaultcodec>UTF-8</defaultcodec>
 <context>
     <name>AboutForm</name>
     <message>
diff --git a/generic.cpp b/generic.cpp
index 13603e3..ba4ea7a 100644
--- a/generic.cpp
+++ b/generic.cpp
@@ -17,6 +17,7 @@
 #include <QPen>
 #include <QPixmapCache>
 #include <QUrl>
+#include <utility>
 
 const QSize SwatchSize(24, 24);
 
@@ -149,8 +150,8 @@ QPixmap penStyleSwatch(const Qt::PenStyle style, const QColor &color)
 const TextBoxList getTextBoxes(PdfPage page, const QRectF &rect)
 {
     TextBoxList boxes;
-    foreach (Poppler::TextBox *box, page->textList()) {
-        PdfTextBox box_ptr(box);
+    for (auto & box : page->textList()) {
+        PdfTextBox box_ptr(std::move(box));
         if (rect.isEmpty() || rect.contains(box_ptr->boundingBox()))
             boxes.append(box_ptr);
     }
diff --git a/generic.hpp b/generic.hpp
index 1e9afce..fd48163 100644
--- a/generic.hpp
+++ b/generic.hpp
@@ -12,7 +12,8 @@
     for more details.
 */
 
-#include <poppler-qt5.h>
+#include <poppler-qt6.h>
+#include <memory>
 #include <QMetaType>
 #include <QPair>
 #include <QPixmap>
@@ -22,15 +23,9 @@ class QColor;
 class QMimeData;
 class QRectF;
 
-#if QT_VERSION >= 0x040600
-typedef QSharedPointer<Poppler::Document> PdfDocument;
-typedef QSharedPointer<Poppler::Page> PdfPage;
-typedef QSharedPointer<Poppler::TextBox> PdfTextBox;
-#else
-typedef std::tr1::shared_ptr<Poppler::Document> PdfDocument;
-typedef std::tr1::shared_ptr<Poppler::Page> PdfPage;
-typedef std::tr1::shared_ptr<Poppler::TextBox> PdfTextBox;
-#endif
+using PdfDocument = std::shared_ptr<Poppler::Document>;
+using PdfPage = std::shared_ptr<Poppler::Page>;
+using PdfTextBox = std::shared_ptr<Poppler::TextBox>;
 typedef QList<PdfTextBox> TextBoxList;
 
 enum InitialComparisonMode{CompareAppearance=0, CompareCharacters=1,
@@ -50,9 +45,9 @@ struct PagePair
 
     bool isNull() { return left == -1 || right == -1; }
 
-    const int left;
-    const int right;
-    const bool hasVisualDifference;
+    int left;
+    int right;
+    bool hasVisualDifference;
 };
 Q_DECLARE_METATYPE(PagePair)
 
diff --git a/helpform.cpp b/helpform.cpp
index 7a8269f..6354ee4 100644
--- a/helpform.cpp
+++ b/helpform.cpp
@@ -16,6 +16,7 @@
 #include <QKeySequence>
 #include <QSettings>
 #include <QShortcut>
+#include <QStringConverter>
 #include <QTextBrowser>
 #include <QTextStream>
 
@@ -31,7 +32,7 @@ HelpForm::HelpForm(const QString &language, QWidget *parent)
     QFile file(filename);
     file.open(QIODevice::ReadOnly|QIODevice::Text);
     QTextStream in(&file);
-    in.setCodec("UTF-8");
+    in.setEncoding(QStringConverter::Utf8);
     viewer->setHtml(in.readAll());
     viewer->setReadOnly(true);
     setCentralWidget(viewer);
diff --git a/main.cpp b/main.cpp
index 321ecc4..a6063d3 100644
--- a/main.cpp
+++ b/main.cpp
@@ -16,7 +16,6 @@
 #include <QLibraryInfo>
 #include <QLocale>
 #include <QSettings>
-#include <QTextCodec>
 #include <QTextStream>
 #include <QTranslator>
 
@@ -101,12 +100,12 @@ int main(int argc, char *argv[])
     }
 
     QTranslator qtTranslator;
-    qtTranslator.load("qt_" + language,
-        QLibraryInfo::location(QLibraryInfo::TranslationsPath));
-    app.installTranslator(&qtTranslator);
+    if (qtTranslator.load("qt_" + language,
+            QLibraryInfo::path(QLibraryInfo::TranslationsPath)))
+        app.installTranslator(&qtTranslator);
     QTranslator appTranslator;
-    appTranslator.load("diffpdf_" + language, ":/");
-    app.installTranslator(&appTranslator);
+    if (appTranslator.load("diffpdf_" + language, ":/"))
+        app.installTranslator(&appTranslator);
 
     MainWindow window(debug, comparisonMode, filename1, filename2,
             language.left(2)); // We want de not de_DE etc.
diff --git a/mainwindow.cpp b/mainwindow.cpp
index c9dac53..bcdc390 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -27,18 +27,21 @@
 #include <QComboBox>
 #include <QDir>
 #include <QDockWidget>
+#include <QElapsedTimer>
 #include <QEvent>
 #include <QFileDialog>
 #include <QGroupBox>
 #include <QLabel>
 #include <QLineEdit>
 #include <QMessageBox>
+#include <QPageLayout>
 #include <QPainter>
 #include <QPixmapCache>
 #include <QPlainTextEdit>
 #include <QPrinter>
 #include <QPushButton>
 #include <QRadioButton>
+#include <QRegularExpression>
 #include <QScrollArea>
 #include <QScrollBar>
 #include <QSettings>
@@ -1249,11 +1252,7 @@ PdfDocument MainWindow::getPdf(const QString &filename)
     else if (pdf->isLocked()) {
         QMessageBox::warning(this, tr("DiffPDF — Error"),
                 tr("Cannot read a locked PDF ('%1').").arg(filename));
-#if QT_VERSION >= 0x040600
-        pdf.clear();
-#else
-        pdf.reset();
-#endif
+        return {};
     }
     return pdf;
 }
@@ -1319,7 +1318,8 @@ QList<int> MainWindow::getPageList(int which, PdfDocument pdf)
     bool error = false;
     QList<int> pages;
     QString page_string = pagesEdit->text();
-    page_string = page_string.replace(QRegExp("\\s+"), "");
+    static QRegularExpression const spaces("\\s+");
+    page_string = page_string.replace(spaces, "");
     QStringList page_list = page_string.split(",");
     bool ok;
     foreach (const QString &page, page_list) {
@@ -1387,7 +1387,7 @@ void MainWindow::compare()
     }
 
     comparePrepareUi();
-    QTime time;
+    QElapsedTimer time;
     time.start();
     const QPair<int, int> pair = comparePages(filename1, pdf1, filename2,
                                               pdf2);
@@ -1685,8 +1685,8 @@ void MainWindow::saveAsPdf(const int start, const int end,
     printer.setOutputFormat(QPrinter::PdfFormat);
     printer.setColorMode(QPrinter::Color);
     printer.setCreator(tr("DiffPDF"));
-    printer.setOrientation(savePages == SaveBothPages
-            ? QPrinter::Landscape : QPrinter::Portrait);
+    printer.setPageOrientation(savePages == SaveBothPages
+            ? QPageLayout::Landscape : QPageLayout::Portrait);
     QPainter painter(&printer);
     painter.setRenderHints(QPainter::Antialiasing|
             QPainter::TextAntialiasing|QPainter::SmoothPixmapTransform);
@@ -1802,7 +1802,7 @@ void MainWindow::showZones()
 void MainWindow::showZones(const int Width, const TextBoxList &list,
                            QLabel *label)
 {
-    if (!label || !label->pixmap() || label->pixmap()->isNull())
+    if (!label || label->pixmap().isNull())
         return;
     const bool ComparingWords = compareComboBox->currentIndex() ==
                                 CompareWords;
@@ -1815,7 +1815,7 @@ void MainWindow::showZones(const int Width, const TextBoxList &list,
             columnsSpinBox->value());
     const int DPI = static_cast<int>(POINTS_PER_INCH *
             (zoomSpinBox->value() / 100.0));
-    QPixmap pixmap = label->pixmap()->copy();
+    QPixmap pixmap = label->pixmap().copy();
     QPainter painter(&pixmap);
     painter.setPen(Qt::green);
     for (int i = 0; i < paths.count(); ++i) {
@@ -1844,11 +1844,11 @@ void MainWindow::showMargins()
 
 void MainWindow::showMargins(QLabel *label)
 {
-    if (!label || !label->pixmap() || label->pixmap()->isNull())
+    if (!label || label->pixmap().isNull())
         return;
     const int DPI = static_cast<int>(POINTS_PER_INCH *
                 (zoomSpinBox->value() / 100.0));
-    QPixmap pixmap = label->pixmap()->copy();
+    QPixmap pixmap = label->pixmap().copy();
     QPainter painter(&pixmap);
     painter.setPen(Qt::cyan);
     int left = leftMarginSpinBox->value();
@@ -1880,12 +1880,11 @@ void MainWindow::showMargins(QLabel *label)
 
 void MainWindow::setAMargin(const QPoint &pos)
 {
-    if (!marginsGroupBox->isChecked() || !page1Label->pixmap() ||
-        page1Label->pixmap()->isNull())
+    if (!marginsGroupBox->isChecked() || page1Label->pixmap().isNull())
         return;
     const int DPI = static_cast<int>(POINTS_PER_INCH *
                 (zoomSpinBox->value() / 100.0));
-    const QSize &size = page1Label->pixmap()->size();
+    const QSize &size = page1Label->pixmap().size();
     int x = pos.x();
     int y = pos.y();
     const int HorizontalMiddle = size.width() / 2;
diff --git a/mainwindow.hpp b/mainwindow.hpp
index 448d21c..6a04179 100644
--- a/mainwindow.hpp
+++ b/mainwindow.hpp
@@ -14,12 +14,7 @@
 
 #include "generic.hpp"
 #include "saveform.hpp"
-#if QT_VERSION >= 0x040600
-#include <QSharedPointer>
-#else
-#include <tr1/memory>
-#endif
-#include <poppler-qt5.h>
+#include <poppler-qt6.h>
 #include <QBrush>
 #include <QList>
 #include <QMainWindow>
diff --git a/resources.qrc b/resources.qrc
index 5464869..aa0f6be 100644
--- a/resources.qrc
+++ b/resources.qrc
@@ -3,9 +3,6 @@
 <file alias="icon.png">images/icon.png</file>
 <file alias="left.png">images/left.png</file>
 <file alias="right.png">images/right.png</file>
-<file>diffpdf_cz.qm</file>
-<file>diffpdf_de.qm</file>
-<file>diffpdf_fr.qm</file>
 <file>help.html</file>
 <file>help_cz.html</file>
 <file>help_de.html</file>
diff --git a/sequence_matcher.cpp b/sequence_matcher.cpp
index cc65425..9dc5d98 100644
--- a/sequence_matcher.cpp
+++ b/sequence_matcher.cpp
@@ -11,6 +11,7 @@
 */
 
 #include "sequence_matcher.hpp"
+#include <algorithm>
 #include <QSet>
 
 
@@ -136,7 +137,7 @@ QList<Match> SequenceMatcher::get_matching_blocks()
                 offsets.append(Offsets(i + k, a_high, j + k, b_high));
         }
     }
-    qSort(matching_blocks.begin(), matching_blocks.end(), matchLessThan);
+    std::sort(matching_blocks.begin(), matching_blocks.end(), matchLessThan);
 
     int i1 = 0;
     int j1 = 0;
diff --git a/textitem.cpp b/textitem.cpp
index f7ce133..728cbb3 100644
--- a/textitem.cpp
+++ b/textitem.cpp
@@ -14,6 +14,7 @@
 
 #include <QDir>
 #include <QFile>
+#include <QStringConverter>
 #include <QTextStream>
 
 
@@ -130,7 +131,7 @@ const QList<QPainterPath> TextItems::generateZones(const int Width,
         const int Column = ((Columns == 1) ? 0
             : (rect.width() > Span) ? Columns : rect.right() / Span);
         const int y = normalizedY(static_cast<int>(rect.y()), ToleranceY);
-        zonesForColumn.insertMulti(Key(Column, y, rect.x()), zone);
+        zonesForColumn.insert(Key(Column, y, rect.x()), zone);
     }
     return zonesForColumn.values();
 }
@@ -152,7 +153,7 @@ void TextItems::debug(const int page, const int ToleranceY,
                                 .arg(file.errorString())));
     }
     QTextStream out(&file);
-    out.setCodec("UTF-8");
+    out.setEncoding(QStringConverter::Utf8);
     out << "Page #" << page << ": "
         << (ComparingWords ? "Words" : "Characters") << " mode\n";
     for (int i = 0; i < items.count(); ++i) {
@@ -202,7 +203,7 @@ const TextItems getCharacters(const TextBoxList &list)
     TextItems items;
     foreach (const PdfTextBox &box, list) {
         const QString word = box->text();
-        int limit = word.count() - 1;
+        int limit = word.size() - 1;
         for (int i = limit; i >= 0; --i)
             if (!word[i].isSpace())
                 break;