Added files to fix the build for JSON editor mode

libs/qscintilla/Qt4Qt5/Qsci/qscilexerjson.h

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+// This defines the interface to the QsciLexerJSON class.
+//
+// Copyright (c) 2017 Riverbank Computing Limited <info@riverbankcomputing.com>
+// 
+// This file is part of QScintilla.
+// 
+// This file may be used under the terms of the GNU General Public License
+// version 3.0 as published by the Free Software Foundation and appearing in
+// the file LICENSE included in the packaging of this file.  Please review the
+// following information to ensure the GNU General Public License version 3.0
+// requirements will be met: http://www.gnu.org/copyleft/gpl.html.
+// 
+// If you do not wish to use this file under the terms of the GPL version 3.0
+// then you may purchase a commercial license.  For more information contact
+// info@riverbankcomputing.com.
+// 
+// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+
+
+#ifndef QSCILEXERJSON_H
+#define QSCILEXERJSON_H
+
+#include <QObject>
+
+#include <Qsci/qsciglobal.h>
+#include <Qsci/qscilexer.h>
+
+
+//! \brief The QsciLexerJSON class encapsulates the Scintilla JSON lexer.
+class QSCINTILLA_EXPORT QsciLexerJSON : public QsciLexer
+{
+    Q_OBJECT
+
+public:
+    //! This enum defines the meanings of the different styles used by the
+    //! JSON lexer.
+    enum {
+        //! The default.
+        Default = 0,
+
+        //! A number.
+        Number = 1,
+
+        //! A string.
+        String = 2,
+
+        //! An unclosed string.
+        UnclosedString = 3,
+
+        //! A property.
+        Property = 4,
+
+        //! An escape sequence.
+        EscapeSequence = 5,
+
+        //! A line comment.
+        CommentLine = 6,
+
+        //! A block comment.
+        CommentBlock = 7,
+
+        //! An operator.
+        Operator = 8,
+
+        //! An Internationalised Resource Identifier (IRI).
+        IRI = 9,
+
+        //! A JSON-LD compact IRI.
+        IRICompact = 10,
+
+        //! A JSON keyword.
+        Keyword = 11,
+
+        //! A JSON-LD keyword.
+        KeywordLD = 12,
+
+        //! A parsing error.
+        Error = 13,
+    };
+
+    //! Construct a QsciLexerJSON with parent \a parent.  \a parent is
+    //! typically the QsciScintilla instance.
+    QsciLexerJSON(QObject *parent = 0);
+
+    //! Destroys the QsciLexerJSON instance.
+    virtual ~QsciLexerJSON();
+
+    //! Returns the name of the language.
+    const char *language() const;
+
+    //! Returns the name of the lexer.  Some lexers support a number of
+    //! languages.
+    const char *lexer() const;
+
+    //! Returns the foreground colour of the text for style number \a style.
+    //!
+    //! \sa defaultPaper()
+    QColor defaultColor(int style) const;
+
+    //! Returns the end-of-line fill for style number \a style.
+    bool defaultEolFill(int style) const;
+
+    //! Returns the font for style number \a style.
+    QFont defaultFont(int style) const;
+
+    //! Returns the background colour of the text for style number \a style.
+    //!
+    //! \sa defaultColor()
+    QColor defaultPaper(int style) const;
+
+    //! Returns the set of keywords for the keyword set \a set recognised
+    //! by the lexer as a space separated string.
+    const char *keywords(int set) const;
+
+    //! Returns the descriptive name for style number \a style.  If the
+    //! style is invalid for this language then an empty QString is returned.
+    //! This is intended to be used in user preference dialogs.
+    QString description(int style) const;
+
+    //! Causes all properties to be refreshed by emitting the
+    //! propertyChanged() signal as required.
+    void refreshProperties();
+
+    //! If \a highlight is true then line and block comments will be
+    //! highlighted.  The default is true.
+    //!
+    //! \sa hightlightComments()
+    void setHighlightComments(bool highlight);
+
+    //! Returns true if line and block comments are highlighted
+    //!
+    //! \sa setHightlightComments()
+    bool highlightComments() const {return allow_comments;}
+
+    //! If \a highlight is true then escape sequences in strings are
+    //! highlighted.  The default is true.
+    //!
+    //! \sa highlightEscapeSequences()
+    void setHighlightEscapeSequences(bool highlight);
+
+    //! Returns true if escape sequences in strings are highlighted.
+    //!
+    //! \sa setHighlightEscapeSequences()
+    bool highlightEscapeSequences() const {return escape_sequence;}
+
+    //! If \a fold is true then trailing blank lines are included in a fold
+    //! block. The default is true.
+    //!
+    //! \sa foldCompact()
+    void setFoldCompact(bool fold);
+
+    //! Returns true if trailing blank lines are included in a fold block.
+    //!
+    //! \sa setFoldCompact()
+    bool foldCompact() const {return fold_compact;}
+
+protected:
+    //! The lexer's properties are read from the settings \a qs.  \a prefix
+    //! (which has a trailing '/') should be used as a prefix to the key of
+    //! each setting.  true is returned if there is no error.
+    //!
+    bool readProperties(QSettings &qs,const QString &prefix);
+
+    //! The lexer's properties are written to the settings \a qs.
+    //! \a prefix (which has a trailing '/') should be used as a prefix to
+    //! the key of each setting.  true is returned if there is no error.
+    //!
+    bool writeProperties(QSettings &qs,const QString &prefix) const;
+
+private:
+	void setAllowCommentsProp();
+	void setEscapeSequenceProp();
+	void setCompactProp();
+
+	bool allow_comments;
+	bool escape_sequence;
+	bool fold_compact;
+
+    QsciLexerJSON(const QsciLexerJSON &);
+    QsciLexerJSON &operator=(const QsciLexerJSON &);
+};
+
+#endif

src/jsontextedit.cpp

@@ -0,0 +1,150 @@
+#include "jsontextedit.h"
+#include "Settings.h"
+
+#include <QFile>
+#include <QDropEvent>
+#include <QUrl>
+#include <QMimeData>
+#include <QDebug>
+#include <cmath>
+
+QsciLexerJSON* JsonTextEdit::jsonLexer = nullptr;
+
+JsonTextEdit::JsonTextEdit(QWidget* parent) :
+    QsciScintilla(parent)
+{
+    // Create lexer object if not done yet
+    if(jsonLexer == nullptr)
+        jsonLexer = new QsciLexerJSON(this);
+
+    // Set the lexer
+    setLexer(jsonLexer);
+
+    // Enable UTF8
+    setUtf8(true);
+
+    // Enable brace matching
+    setBraceMatching(QsciScintilla::SloppyBraceMatch);
+
+    // Enable auto indentation
+    setAutoIndent(true);
+
+    // Enable folding
+    setFolding(QsciScintilla::BoxedTreeFoldStyle);
+    jsonLexer->setFoldCompact(false);
+    
+    // Set a sensible scroll width, so the scroll bar is avoided in
+    // most cases.
+    setScrollWidth(80);
+
+    // Scroll width is adjusted to ensure that all of the lines
+    // currently displayed can be completely scrolled. This mode never
+    // adjusts the scroll width to be narrower.
+    setScrollWidthTracking(true);
+
+    // Do rest of initialisation
+    reloadSettings();
+
+    // Connect signals
+    connect(this, SIGNAL(linesChanged()), this, SLOT(updateLineNumberAreaWidth()));
+}
+
+JsonTextEdit::~JsonTextEdit()
+{
+}
+
+void JsonTextEdit::updateLineNumberAreaWidth()
+{
+    // Calculate number of digits of the current number of lines
+    int digits = std::floor(std::log10(lines())) + 1;
+
+    // Calculate the width of this number if it was all zeros (this is because a 1 might require less space than a 0 and this could
+    // cause some flickering depending on the font) and set the new margin width.
+    QFont font = lexer()->font(QsciLexerJSON::Default);
+    setMarginWidth(0, QFontMetrics(font).width(QString("0").repeated(digits)) + 5);
+}
+
+void JsonTextEdit::dropEvent(QDropEvent* e)
+{
+    QList<QUrl> urls = e->mimeData()->urls();
+    if(urls.isEmpty())
+        return QsciScintilla::dropEvent(e);
+
+    QString file = urls.first().toLocalFile();
+    if(!QFile::exists(file))
+        return;
+
+    QFile f(file);
+    f.open(QIODevice::ReadOnly);
+    setText(f.readAll());
+    f.close();
+}
+
+void JsonTextEdit::setupSyntaxHighlightingFormat(const QString& settings_name, int style)
+{
+    jsonLexer->setColor(QColor(Settings::getValue("syntaxhighlighter", settings_name + "_colour").toString()), style);
+
+    QFont font(Settings::getValue("editor", "font").toString());
+    font.setPointSize(Settings::getValue("editor", "fontsize").toInt());
+    font.setBold(Settings::getValue("syntaxhighlighter", settings_name + "_bold").toBool());
+    font.setItalic(Settings::getValue("syntaxhighlighter", settings_name + "_italic").toBool());
+    font.setUnderline(Settings::getValue("syntaxhighlighter", settings_name + "_underline").toBool());
+    jsonLexer->setFont(font, style);
+}
+
+void JsonTextEdit::reloadKeywords()
+{
+    // Set lexer again to reload the updated keywords list
+    setLexer(lexer());
+}
+
+void JsonTextEdit::reloadSettings()
+{
+    // Enable auto completion if it hasn't been disabled
+    if(Settings::getValue("editor", "auto_completion").toBool())
+    {
+        setAutoCompletionThreshold(3);
+        setAutoCompletionCaseSensitivity(true);
+        setAutoCompletionShowSingle(true);
+        setAutoCompletionSource(QsciScintilla::AcsAPIs);
+    } else {
+        setAutoCompletionThreshold(0);
+    }
+
+    // Set syntax highlighting settings
+    QFont defaultfont(Settings::getValue("editor", "font").toString());
+    defaultfont.setStyleHint(QFont::TypeWriter);
+    defaultfont.setPointSize(Settings::getValue("editor", "fontsize").toInt());
+    jsonLexer->setFont(defaultfont);
+    setupSyntaxHighlightingFormat("comment", QsciLexerJSON::CommentLine);
+    setupSyntaxHighlightingFormat("comment", QsciLexerJSON::CommentBlock);
+    setupSyntaxHighlightingFormat("keyword", QsciLexerJSON::Keyword);
+    setupSyntaxHighlightingFormat("keyword", QsciLexerJSON::KeywordLD);
+    setupSyntaxHighlightingFormat("string", QsciLexerJSON::String);
+    setupSyntaxHighlightingFormat("table", QsciLexerJSON::Number);
+    setupSyntaxHighlightingFormat("identifier", QsciLexerJSON::Property);
+    jsonLexer->setHighlightComments(true);
+    
+    // Set font
+    QFont font(Settings::getValue("editor", "font").toString());
+    font.setStyleHint(QFont::TypeWriter);
+    font.setPointSize(Settings::getValue("editor", "fontsize").toInt());
+    setFont(font);
+
+    // Show line numbers
+    QFont marginsfont(QFont(Settings::getValue("editor", "font").toString()));
+    marginsfont.setPointSize(font.pointSize());
+    setMarginsFont(marginsfont);
+    setMarginLineNumbers(0, true);
+    setMarginsBackgroundColor(Qt::lightGray);
+    updateLineNumberAreaWidth();
+
+    // Highlight current line
+    setCaretLineVisible(true);
+    setCaretLineBackgroundColor(QColor(Settings::getValue("syntaxhighlighter", "currentline_colour").toString()));
+
+    // Set tab width
+    setTabWidth(Settings::getValue("editor", "tabsize").toInt());
+    jsonLexer->refreshProperties();
+
+}

src/jsontextedit.h

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+#ifndef JSONTEXTEDIT_H
+#define JSONTEXTEDIT_H
+
+#include "Qsci/qsciscintilla.h"
+#include <Qsci/qscilexerjson.h>
+
+/**
+ * @brief The JsonTextEdit class
+ * This class is based on the QScintilla widget
+ */
+class JsonTextEdit : public QsciScintilla
+{
+    Q_OBJECT
+
+public:
+    explicit JsonTextEdit(QWidget *parent = nullptr);
+    virtual ~JsonTextEdit();
+
+    static QsciLexerJSON* jsonLexer;
+
+public slots:
+    void reloadKeywords();
+    void reloadSettings();
+
+protected:
+    void dropEvent(QDropEvent* e);
+
+private:
+    void setupSyntaxHighlightingFormat(const QString& settings_name, int style);
+
+private slots:
+    void updateLineNumberAreaWidth();
+};
+
+#endif