feat: add missing KF6 framework recipes

local/recipes/kde/kf6-syntaxhighlighting/source/examples/codeeditor/CMakeLists.txt

@@ -0,0 +1,4 @@
+if(TARGET Qt6::Widgets)
+    add_executable(codeeditor codeeditor.cpp main.cpp)
+    target_link_libraries(codeeditor Qt6::Widgets KF6SyntaxHighlighting)
+endif()

local/recipes/kde/kf6-syntaxhighlighting/source/examples/codeeditor/codeeditor.cpp

@@ -0,0 +1,349 @@
+/*
+    SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: MIT
+*/
+
+#include "codeeditor.h"
+
+#include <KSyntaxHighlighting/Definition>
+#include <KSyntaxHighlighting/FoldingRegion>
+#include <KSyntaxHighlighting/SyntaxHighlighter>
+#include <KSyntaxHighlighting/Theme>
+
+#include <QActionGroup>
+#include <QApplication>
+#include <QDebug>
+#include <QFile>
+#include <QFileDialog>
+#include <QFontDatabase>
+#include <QMenu>
+#include <QPainter>
+#include <QPalette>
+
+class CodeEditorSidebar : public QWidget
+{
+    Q_OBJECT
+public:
+    explicit CodeEditorSidebar(CodeEditor *editor);
+    QSize sizeHint() const override;
+
+protected:
+    void paintEvent(QPaintEvent *event) override;
+    void mouseReleaseEvent(QMouseEvent *event) override;
+
+private:
+    CodeEditor *m_codeEditor;
+};
+
+CodeEditorSidebar::CodeEditorSidebar(CodeEditor *editor)
+    : QWidget(editor)
+    , m_codeEditor(editor)
+{
+}
+
+QSize CodeEditorSidebar::sizeHint() const
+{
+    return QSize(m_codeEditor->sidebarWidth(), 0);
+}
+
+void CodeEditorSidebar::paintEvent(QPaintEvent *event)
+{
+    m_codeEditor->sidebarPaintEvent(event);
+}
+
+void CodeEditorSidebar::mouseReleaseEvent(QMouseEvent *event)
+{
+    if (event->pos().x() >= width() - m_codeEditor->fontMetrics().lineSpacing()) {
+        auto block = m_codeEditor->blockAtPosition(event->pos().y());
+        if (!block.isValid() || !m_codeEditor->isFoldable(block)) {
+            return;
+        }
+        m_codeEditor->toggleFold(block);
+    }
+    QWidget::mouseReleaseEvent(event);
+}
+
+CodeEditor::CodeEditor(QWidget *parent)
+    : QPlainTextEdit(parent)
+    , m_highlighter(new KSyntaxHighlighting::SyntaxHighlighter(document()))
+    , m_sideBar(new CodeEditorSidebar(this))
+{
+    setFont(QFontDatabase::systemFont(QFontDatabase::FixedFont));
+
+    setTheme((palette().color(QPalette::Base).lightness() < 128) ? m_repository.defaultTheme(KSyntaxHighlighting::Repository::DarkTheme)
+                                                                 : m_repository.defaultTheme(KSyntaxHighlighting::Repository::LightTheme));
+
+    connect(this, &QPlainTextEdit::blockCountChanged, this, &CodeEditor::updateSidebarGeometry);
+    connect(this, &QPlainTextEdit::updateRequest, this, &CodeEditor::updateSidebarArea);
+    connect(this, &QPlainTextEdit::cursorPositionChanged, this, &CodeEditor::highlightCurrentLine);
+
+    updateSidebarGeometry();
+    highlightCurrentLine();
+}
+
+CodeEditor::~CodeEditor()
+{
+}
+
+void CodeEditor::openFile(const QString &fileName)
+{
+    QFile f(fileName);
+    if (!f.open(QFile::ReadOnly)) {
+        qWarning() << "Failed to open" << fileName << ":" << f.errorString();
+        return;
+    }
+
+    clear();
+
+    const auto def = m_repository.definitionForFileName(fileName);
+    m_highlighter->setDefinition(def);
+
+    setWindowTitle(fileName);
+    setPlainText(QString::fromUtf8(f.readAll()));
+}
+
+void CodeEditor::contextMenuEvent(QContextMenuEvent *event)
+{
+    auto menu = createStandardContextMenu(event->pos());
+    menu->addSeparator();
+    auto openAction = menu->addAction(QStringLiteral("Open File..."));
+    connect(openAction, &QAction::triggered, this, [this]() {
+        const auto fileName = QFileDialog::getOpenFileName(this, QStringLiteral("Open File"));
+        if (!fileName.isEmpty()) {
+            openFile(fileName);
+        }
+    });
+
+    // syntax selection
+    auto hlActionGroup = new QActionGroup(menu);
+    hlActionGroup->setExclusive(true);
+    auto hlGroupMenu = menu->addMenu(QStringLiteral("Syntax"));
+    QMenu *hlSubMenu = hlGroupMenu;
+    QString currentGroup;
+    for (const auto &def : m_repository.definitions()) {
+        if (def.isHidden()) {
+            continue;
+        }
+        if (currentGroup != def.section()) {
+            currentGroup = def.section();
+            hlSubMenu = hlGroupMenu->addMenu(def.translatedSection());
+        }
+
+        Q_ASSERT(hlSubMenu);
+        auto action = hlSubMenu->addAction(def.translatedName());
+        action->setCheckable(true);
+        action->setData(def.name());
+        hlActionGroup->addAction(action);
+        if (def.name() == m_highlighter->definition().name()) {
+            action->setChecked(true);
+        }
+    }
+    connect(hlActionGroup, &QActionGroup::triggered, this, [this](QAction *action) {
+        const auto defName = action->data().toString();
+        const auto def = m_repository.definitionForName(defName);
+        m_highlighter->setDefinition(def);
+    });
+
+    // theme selection
+    auto themeGroup = new QActionGroup(menu);
+    themeGroup->setExclusive(true);
+    auto themeMenu = menu->addMenu(QStringLiteral("Theme"));
+    for (const auto &theme : m_repository.themes()) {
+        auto action = themeMenu->addAction(theme.translatedName());
+        action->setCheckable(true);
+        action->setData(theme.name());
+        themeGroup->addAction(action);
+        if (theme.name() == m_highlighter->theme().name()) {
+            action->setChecked(true);
+        }
+    }
+    connect(themeGroup, &QActionGroup::triggered, this, [this](QAction *action) {
+        const auto themeName = action->data().toString();
+        const auto theme = m_repository.theme(themeName);
+        setTheme(theme);
+    });
+
+    menu->exec(event->globalPos());
+    delete menu;
+}
+
+void CodeEditor::resizeEvent(QResizeEvent *event)
+{
+    QPlainTextEdit::resizeEvent(event);
+    updateSidebarGeometry();
+}
+
+void CodeEditor::setTheme(const KSyntaxHighlighting::Theme &theme)
+{
+    auto pal = qApp->palette();
+    if (theme.isValid()) {
+        pal.setColor(QPalette::Base, theme.editorColor(KSyntaxHighlighting::Theme::BackgroundColor));
+        pal.setColor(QPalette::Highlight, theme.editorColor(KSyntaxHighlighting::Theme::TextSelection));
+    }
+    setPalette(pal);
+
+    m_highlighter->setTheme(theme);
+    m_highlighter->rehighlight();
+    highlightCurrentLine();
+}
+
+int CodeEditor::sidebarWidth() const
+{
+    int digits = 1;
+    auto count = blockCount();
+    while (count >= 10) {
+        ++digits;
+        count /= 10;
+    }
+    return 4 + fontMetrics().horizontalAdvance(QLatin1Char('9')) * digits + fontMetrics().lineSpacing();
+}
+
+void CodeEditor::sidebarPaintEvent(QPaintEvent *event)
+{
+    QPainter painter(m_sideBar);
+    painter.fillRect(event->rect(), m_highlighter->theme().editorColor(KSyntaxHighlighting::Theme::IconBorder));
+
+    auto block = firstVisibleBlock();
+    auto blockNumber = block.blockNumber();
+    int top = blockBoundingGeometry(block).translated(contentOffset()).top();
+    int bottom = top + blockBoundingRect(block).height();
+    const int currentBlockNumber = textCursor().blockNumber();
+
+    const auto foldingMarkerSize = fontMetrics().lineSpacing();
+
+    while (block.isValid() && top <= event->rect().bottom()) {
+        if (block.isVisible() && bottom >= event->rect().top()) {
+            const auto number = QString::number(blockNumber + 1);
+            painter.setPen(m_highlighter->theme().editorColor((blockNumber == currentBlockNumber) ? KSyntaxHighlighting::Theme::CurrentLineNumber
+                                                                                                  : KSyntaxHighlighting::Theme::LineNumbers));
+            painter.drawText(0, top, m_sideBar->width() - 2 - foldingMarkerSize, fontMetrics().height(), Qt::AlignRight, number);
+        }
+
+        // folding marker
+        if (block.isVisible() && isFoldable(block)) {
+            QPolygonF polygon;
+            if (isFolded(block)) {
+                polygon << QPointF(foldingMarkerSize * 0.4, foldingMarkerSize * 0.25);
+                polygon << QPointF(foldingMarkerSize * 0.4, foldingMarkerSize * 0.75);
+                polygon << QPointF(foldingMarkerSize * 0.8, foldingMarkerSize * 0.5);
+            } else {
+                polygon << QPointF(foldingMarkerSize * 0.25, foldingMarkerSize * 0.4);
+                polygon << QPointF(foldingMarkerSize * 0.75, foldingMarkerSize * 0.4);
+                polygon << QPointF(foldingMarkerSize * 0.5, foldingMarkerSize * 0.8);
+            }
+            painter.save();
+            painter.setRenderHint(QPainter::Antialiasing);
+            painter.setPen(Qt::NoPen);
+            painter.setBrush(QColor(m_highlighter->theme().editorColor(KSyntaxHighlighting::Theme::CodeFolding)));
+            painter.translate(m_sideBar->width() - foldingMarkerSize, top);
+            painter.drawPolygon(polygon);
+            painter.restore();
+        }
+
+        block = block.next();
+        top = bottom;
+        bottom = top + blockBoundingRect(block).height();
+        ++blockNumber;
+    }
+}
+
+void CodeEditor::updateSidebarGeometry()
+{
+    setViewportMargins(sidebarWidth(), 0, 0, 0);
+    const auto r = contentsRect();
+    m_sideBar->setGeometry(QRect(r.left(), r.top(), sidebarWidth(), r.height()));
+}
+
+void CodeEditor::updateSidebarArea(const QRect &rect, int dy)
+{
+    if (dy) {
+        m_sideBar->scroll(0, dy);
+    } else {
+        m_sideBar->update(0, rect.y(), m_sideBar->width(), rect.height());
+    }
+}
+
+void CodeEditor::highlightCurrentLine()
+{
+    QTextEdit::ExtraSelection selection;
+    selection.format.setBackground(QColor(m_highlighter->theme().editorColor(KSyntaxHighlighting::Theme::CurrentLine)));
+    selection.format.setProperty(QTextFormat::FullWidthSelection, true);
+    selection.cursor = textCursor();
+    selection.cursor.clearSelection();
+
+    QList<QTextEdit::ExtraSelection> extraSelections;
+    extraSelections.append(selection);
+    setExtraSelections(extraSelections);
+}
+
+QTextBlock CodeEditor::blockAtPosition(int y) const
+{
+    auto block = firstVisibleBlock();
+    if (!block.isValid()) {
+        return QTextBlock();
+    }
+
+    int top = blockBoundingGeometry(block).translated(contentOffset()).top();
+    int bottom = top + blockBoundingRect(block).height();
+    do {
+        if (top <= y && y <= bottom) {
+            return block;
+        }
+        block = block.next();
+        top = bottom;
+        bottom = top + blockBoundingRect(block).height();
+    } while (block.isValid());
+    return QTextBlock();
+}
+
+bool CodeEditor::isFoldable(const QTextBlock &block) const
+{
+    return m_highlighter->startsFoldingRegion(block);
+}
+
+bool CodeEditor::isFolded(const QTextBlock &block) const
+{
+    if (!block.isValid()) {
+        return false;
+    }
+    const auto nextBlock = block.next();
+    if (!nextBlock.isValid()) {
+        return false;
+    }
+    return !nextBlock.isVisible();
+}
+
+void CodeEditor::toggleFold(const QTextBlock &startBlock)
+{
+    // we also want to fold the last line of the region, therefore the ".next()"
+    const auto endBlock = m_highlighter->findFoldingRegionEnd(startBlock).next();
+
+    if (isFolded(startBlock)) {
+        // unfold
+        auto block = startBlock.next();
+        while (block.isValid() && !block.isVisible()) {
+            block.setVisible(true);
+            block.setLineCount(block.layout()->lineCount());
+            block = block.next();
+        }
+
+    } else {
+        // fold
+        auto block = startBlock.next();
+        while (block.isValid() && block != endBlock) {
+            block.setVisible(false);
+            block.setLineCount(0);
+            block = block.next();
+        }
+    }
+
+    // redraw document
+    document()->markContentsDirty(startBlock.position(), endBlock.position() - startBlock.position() + 1);
+
+    // update scrollbars
+    Q_EMIT document()->documentLayout()->documentSizeChanged(document()->documentLayout()->documentSize());
+}
+
+#include "codeeditor.moc"
+#include "moc_codeeditor.cpp"

local/recipes/kde/kf6-syntaxhighlighting/source/examples/codeeditor/codeeditor.h

@@ -0,0 +1,53 @@
+/*
+    SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: MIT
+*/
+
+#ifndef CODEEDITOR_H
+#define CODEEDITOR_H
+
+#include <KSyntaxHighlighting/Repository>
+
+#include <QPlainTextEdit>
+
+namespace KSyntaxHighlighting
+{
+class SyntaxHighlighter;
+}
+
+class CodeEditorSidebar;
+
+class CodeEditor : public QPlainTextEdit
+{
+    Q_OBJECT
+public:
+    explicit CodeEditor(QWidget *parent = nullptr);
+    ~CodeEditor() override;
+
+    void openFile(const QString &fileName);
+
+protected:
+    void contextMenuEvent(QContextMenuEvent *event) override;
+    void resizeEvent(QResizeEvent *event) override;
+
+private:
+    friend class CodeEditorSidebar;
+    void setTheme(const KSyntaxHighlighting::Theme &theme);
+    int sidebarWidth() const;
+    void sidebarPaintEvent(QPaintEvent *event);
+    void updateSidebarGeometry();
+    void updateSidebarArea(const QRect &rect, int dy);
+    void highlightCurrentLine();
+
+    QTextBlock blockAtPosition(int y) const;
+    bool isFoldable(const QTextBlock &block) const;
+    bool isFolded(const QTextBlock &block) const;
+    void toggleFold(const QTextBlock &block);
+
+    KSyntaxHighlighting::Repository m_repository;
+    KSyntaxHighlighting::SyntaxHighlighter *m_highlighter;
+    CodeEditorSidebar *m_sideBar;
+};
+
+#endif // CODEEDITOR_H

local/recipes/kde/kf6-syntaxhighlighting/source/examples/codeeditor/main.cpp

@@ -0,0 +1,28 @@
+/*
+    SPDX-FileCopyrightText: 2016 Volker Krause <vkrause@kde.org>
+
+    SPDX-License-Identifier: MIT
+*/
+
+#include "codeeditor.h"
+
+#include <QApplication>
+#include <QCommandLineParser>
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    QCommandLineParser parser;
+    parser.addHelpOption();
+    parser.addPositionalArgument(QStringLiteral("source"), QStringLiteral("The source file to highlight."));
+    parser.process(app);
+
+    CodeEditor edit;
+    edit.resize(1024, 1024);
+    edit.show();
+    if (parser.positionalArguments().size() == 1) {
+        edit.openFile(parser.positionalArguments().at(0));
+    }
+    return app.exec();
+}