JSEdit Class Reference

#include <jsedit.h>

Inheritance diagram for JSEdit:

Collaboration diagram for JSEdit:

Public Types
enum	ColorComponent {   Background, Normal, Comment, Number,   String, Operator, Identifier, Keyword,   BuiltIn, Sidebar, LineNumber, Cursor,   Marker, BracketMatch, BracketError, FoldIndicator }

Public Slots
void	updateSidebar ()
void	mark (const QString &str, Qt::CaseSensitivity sens=Qt::CaseInsensitive)
void	setBracketsMatchingEnabled (bool enable)
void	setCodeFoldingEnabled (bool enable)
void	setLineNumbersVisible (bool visible)
void	setTextWrapEnabled (bool enable)
void	fold (int line)
void	unfold (int line)
void	toggleFold (int line)

Public Member Functions
	JSEdit (QWidget *parent=0)
	~JSEdit ()
void	setColor (ColorComponent component, const QColor &color)
QStringList	keywords () const
void	setKeywords (const QStringList &keywords)
bool	isBracketsMatchingEnabled () const
bool	isCodeFoldingEnabled () const
bool	isLineNumbersVisible () const
bool	isTextWrapEnabled () const
bool	isFoldable (int line) const
bool	isFolded (int line) const

Protected Member Functions
void	resizeEvent (QResizeEvent *e)
void	wheelEvent (QWheelEvent *e)

Properties
bool	bracketsMatchingEnabled
bool	codeFoldingEnabled
bool	lineNumbersVisible
bool	textWrapEnabled

Private Slots
void	updateCursor ()
void	updateSidebar (const QRect &rect, int d)

Private Member Functions
	Q_DECLARE_PRIVATE (JSEdit)
	Q_DISABLE_COPY (JSEdit)

Private Attributes
QScopedPointer< JSEditPrivate >	d_ptr

Detailed Description

Definition at line 50 of file jsedit.h.

Member Enumeration Documentation

ColorComponent

enum JSEdit::ColorComponent

Enumerator
Background
Normal
Comment
Number
String
Operator
Identifier
Keyword
BuiltIn
Sidebar
LineNumber
Cursor
Marker
BracketMatch
BracketError
FoldIndicator

Definition at line 60 of file jsedit.h.

                 {
        Background,
        Normal,
        Comment,
        Number,
        String,
        Operator,
        Identifier,
        Keyword,
        BuiltIn,
        Sidebar,
        LineNumber,
        Cursor,
        Marker,
        BracketMatch,
        BracketError,
        FoldIndicator
    } ColorComponent;

Constructor & Destructor Documentation

JSEdit()

JSEdit::JSEdit

(

QWidget *

parent = 0

)

Definition at line 623 of file jsedit.cpp.

    : QPlainTextEdit(parent)
    , d_ptr(new JSEditPrivate)
{
    d_ptr->editor = this;
    d_ptr->layout = new JSDocLayout(document());
    d_ptr->highlighter = new JSHighlighter(document());
    d_ptr->sidebar = new SidebarWidget(this);
    d_ptr->showLineNumbers = true;
    d_ptr->textWrap = true;
    d_ptr->bracketsMatching = true;
    d_ptr->cursorColor = QColor(255, 255, 192);
    d_ptr->bracketMatchColor = QColor(180, 238, 180);
    d_ptr->bracketErrorColor = QColor(224, 128, 128);
    d_ptr->codeFolding = true;
 
    document()->setDocumentLayout(d_ptr->layout);
 
    connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateCursor()));
    connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateSidebar()));
    connect(this, SIGNAL(updateRequest(QRect, int)), this, SLOT(updateSidebar(QRect, int)));
 
#if defined(Q_OS_MAC)
    QFont textFont = font();
    textFont.setPointSize(12);
    textFont.setFamily("Monaco");
    setFont(textFont);
#elif defined(Q_OS_UNIX)
    QFont textFont = font();
    textFont.setFamily("Monospace");
    setFont(textFont);
#endif
}

References d_ptr, updateCursor(), and updateSidebar().

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~JSEdit()

JSEdit::~JSEdit

(

)

Definition at line 657 of file jsedit.cpp.

{
    delete d_ptr->layout;
}

References d_ptr.

Member Function Documentation

fold

void JSEdit::fold ( int  line )

slot

Definition at line 798 of file jsedit.cpp.

{
    QTextBlock startBlock = document()->findBlockByNumber(line - 1);
    int endPos = findClosingConstruct(startBlock);
    if (endPos < 0)
        return;
    QTextBlock endBlock = document()->findBlock(endPos);
 
    QTextBlock block = startBlock.next();
    while (block.isValid() && block != endBlock) {
        block.setVisible(false);
        block.setLineCount(0);
        block = block.next();
    }
 
    document()->markContentsDirty(startBlock.position(), endPos - startBlock.position() + 1);
    updateSidebar();
    update();
 
    JSDocLayout *layout = reinterpret_cast<JSDocLayout*>(document()->documentLayout());
    layout->forceUpdate();
}

References findClosingConstruct(), JSDocLayout::forceUpdate(), and updateSidebar().

Referenced by toggleFold().

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isBracketsMatchingEnabled()

bool JSEdit::isBracketsMatchingEnabled

(

)

const

Definition at line 732 of file jsedit.cpp.

{
    return d_ptr->bracketsMatching;
}

References d_ptr.

isCodeFoldingEnabled()

bool JSEdit::isCodeFoldingEnabled

(

)

const

Definition at line 743 of file jsedit.cpp.

{
    return d_ptr->codeFolding;
}

References d_ptr.

isFoldable()

bool JSEdit::isFoldable

(

int

line

)

const

Definition at line 776 of file jsedit.cpp.

{
    int matchPos = findClosingConstruct(document()->findBlockByNumber(line - 1));
    if (matchPos >= 0) {
        QTextBlock matchBlock = document()->findBlock(matchPos);
        if (matchBlock.isValid() && matchBlock.blockNumber() > line)
            return true;
    }
    return false;
}

References findClosingConstruct().

Referenced by updateSidebar().

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isFolded()

bool JSEdit::isFolded

(

int

line

)

const

Definition at line 787 of file jsedit.cpp.

{
    QTextBlock block = document()->findBlockByNumber(line - 1);
    if (!block.isValid())
        return false;
    block = block.next();
    if (!block.isValid())
        return false;
    return !block.isVisible();
}

Referenced by toggleFold(), and updateSidebar().

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isLineNumbersVisible()

bool JSEdit::isLineNumbersVisible

(

)

const

Definition at line 710 of file jsedit.cpp.

{
    return d_ptr->showLineNumbers;
}

References d_ptr.

isTextWrapEnabled()

bool JSEdit::isTextWrapEnabled

(

)

const

Definition at line 721 of file jsedit.cpp.

{
    return d_ptr->textWrap;
}

References d_ptr.

keywords()

QStringList JSEdit::keywords

(

)

const

Definition at line 700 of file jsedit.cpp.

{
    return d_ptr->highlighter->keywords();
}

References d_ptr.

Referenced by setKeywords().

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mark

void JSEdit::mark ( const QString &  str, Qt::CaseSensitivity  sens = Qt::CaseInsensitive  )

slot

Definition at line 1007 of file jsedit.cpp.

{
    d_ptr->highlighter->mark(str, sens);
}

References d_ptr.

Q_DECLARE_PRIVATE()

JSEdit::Q_DECLARE_PRIVATE ( JSEdit  )

private

Q_DISABLE_COPY()

JSEdit::Q_DISABLE_COPY ( JSEdit  )

private

resizeEvent()

void JSEdit::resizeEvent ( QResizeEvent *  e )

protected

Definition at line 850 of file jsedit.cpp.

{
    QPlainTextEdit::resizeEvent(e);
    updateSidebar();
}

References updateSidebar().

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setBracketsMatchingEnabled

void JSEdit::setBracketsMatchingEnabled ( bool  enable )

slot

Definition at line 737 of file jsedit.cpp.

{
    d_ptr->bracketsMatching = enable;
    updateCursor();
}

References d_ptr, and updateCursor().

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setCodeFoldingEnabled

void JSEdit::setCodeFoldingEnabled ( bool  enable )

slot

Definition at line 748 of file jsedit.cpp.

{
    d_ptr->codeFolding = enable;
    updateSidebar();
}

References d_ptr, and updateSidebar().

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setColor()

void JSEdit::setColor	(	ColorComponent	component,
		const QColor &	color
	)

Definition at line 662 of file jsedit.cpp.

{
    Q_D(JSEdit);
 
    if (component == Background) {
        QPalette pal = palette();
        pal.setColor(QPalette::Base, color);
        setPalette(pal);
        d->sidebar->indicatorColor = color;
        updateSidebar();
    } else if (component == Normal) {
        QPalette pal = palette();
        pal.setColor(QPalette::Text, color);
        setPalette(pal);
    } else if (component == Sidebar) {
        d->sidebar->backgroundColor = color;
        updateSidebar();
    } else if (component == LineNumber) {
        d->sidebar->lineNumberColor = color;
        updateSidebar();
    } else if (component == Cursor) {
        d->cursorColor = color;
        updateCursor();
    } else if (component == BracketMatch) {
        d->bracketMatchColor = color;
        updateCursor();
    } else if (component == BracketError) {
        d->bracketErrorColor = color;
        updateCursor();
    } else if (component == FoldIndicator) {
        d->sidebar->foldIndicatorColor = color;
        updateSidebar();
    } else {
        d->highlighter->setColor(component, color);
        updateCursor();
    }
}

References Background, BracketError, BracketMatch, Cursor, FoldIndicator, LineNumber, Normal, Sidebar, updateCursor(), and updateSidebar().

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setKeywords()

void JSEdit::setKeywords

(

const QStringList &

keywords

)

Definition at line 705 of file jsedit.cpp.

{
    d_ptr->highlighter->setKeywords(keywords);
}

References d_ptr, and keywords().

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setLineNumbersVisible

void JSEdit::setLineNumbersVisible ( bool  visible )

slot

Definition at line 715 of file jsedit.cpp.

{
    d_ptr->showLineNumbers = visible;
    updateSidebar();
}

References d_ptr, and updateSidebar().

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setTextWrapEnabled

void JSEdit::setTextWrapEnabled ( bool  enable )

slot

Definition at line 726 of file jsedit.cpp.

{
    d_ptr->textWrap = enable;
    setLineWrapMode(enable ? WidgetWidth : NoWrap);
}

References d_ptr.

toggleFold

void JSEdit::toggleFold ( int  line )

slot

Definition at line 842 of file jsedit.cpp.

{
    if (isFolded(line))
        unfold(line);
    else
        fold(line);
}

References fold(), isFolded(), and unfold().

Referenced by SidebarWidget::mousePressEvent().

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unfold

void JSEdit::unfold ( int  line )

slot

Definition at line 821 of file jsedit.cpp.

{
    QTextBlock startBlock = document()->findBlockByNumber(line - 1);
    int endPos = findClosingConstruct(startBlock);
 
    QTextBlock block = startBlock.next();
    while (block.isValid() && !block.isVisible()) {
        block.setVisible(true);
        block.setLineCount(block.layout()->lineCount());
        endPos = block.position() + block.length();
        block = block.next();
    }
 
    document()->markContentsDirty(startBlock.position(), endPos - startBlock.position() + 1);
    updateSidebar();
    update();
 
    JSDocLayout *layout = reinterpret_cast<JSDocLayout*>(document()->documentLayout());
    layout->forceUpdate();
}

References findClosingConstruct(), JSDocLayout::forceUpdate(), and updateSidebar().

Referenced by toggleFold().

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updateCursor

void JSEdit::updateCursor ( )

privateslot

Definition at line 874 of file jsedit.cpp.

{
    Q_D(JSEdit);
 
    if (isReadOnly()) {
        setExtraSelections(QList<QTextEdit::ExtraSelection>());
    } else {
 
        d->matchPositions.clear();
        d->errorPositions.clear();
 
        if (d->bracketsMatching && textCursor().block().userData()) {
            QTextCursor cursor = textCursor();
            int cursorPosition = cursor.position();
 
            if (document()->characterAt(cursorPosition) == '{') {
                int matchPos = findClosingMatch(document(), cursorPosition);
                if (matchPos < 0) {
                    d->errorPositions += cursorPosition;
                } else {
                    d->matchPositions += cursorPosition;
                    d->matchPositions += matchPos;
                }
            }
 
            if (document()->characterAt(cursorPosition - 1) == '}') {
                int matchPos = findOpeningMatch(document(), cursorPosition);
                if (matchPos < 0) {
                    d->errorPositions += cursorPosition - 1;
                } else {
                    d->matchPositions += cursorPosition - 1;
                    d->matchPositions += matchPos;
                }
            }
        }
 
        QTextEdit::ExtraSelection highlight;
        highlight.format.setBackground(d->cursorColor);
        highlight.format.setProperty(QTextFormat::FullWidthSelection, true);
        highlight.cursor = textCursor();
        highlight.cursor.clearSelection();
 
        QList<QTextEdit::ExtraSelection> extraSelections;
        extraSelections.append(highlight);
 
        for (int i = 0; i < d->matchPositions.count(); ++i) {
            int pos = d->matchPositions.at(i);
            QTextEdit::ExtraSelection matchHighlight;
            matchHighlight.format.setBackground(d->bracketMatchColor);
            matchHighlight.cursor = textCursor();
            matchHighlight.cursor.setPosition(pos);
            matchHighlight.cursor.setPosition(pos + 1, QTextCursor::KeepAnchor);
            extraSelections.append(matchHighlight);
        }
 
        for (int i = 0; i < d->errorPositions.count(); ++i) {
            int pos = d->errorPositions.at(i);
            QTextEdit::ExtraSelection errorHighlight;
            errorHighlight.format.setBackground(d->bracketErrorColor);
            errorHighlight.cursor = textCursor();
            errorHighlight.cursor.setPosition(pos);
            errorHighlight.cursor.setPosition(pos + 1, QTextCursor::KeepAnchor);
            extraSelections.append(errorHighlight);
        }
 
        setExtraSelections(extraSelections);
    }
}

References findClosingMatch(), and findOpeningMatch().

Referenced by JSEdit(), setBracketsMatchingEnabled(), and setColor().

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updateSidebar [1/2]

void JSEdit::updateSidebar ( )

slot

Definition at line 950 of file jsedit.cpp.

{
    Q_D(JSEdit);
 
    if (!d->showLineNumbers && !d->codeFolding) {
        d->sidebar->hide();
        setViewportMargins(0, 0, 0, 0);
        d->sidebar->setGeometry(3, 0, 0, height());
        return;
    }
 
    d->sidebar->foldIndicatorWidth = 0;
    d->sidebar->font = this->font();
    d->sidebar->show();
 
    int sw = 0;
    if (d->showLineNumbers) {
        int digits = 2;
        int maxLines = blockCount();
        for (int number = 10; number < maxLines; number *= 10)
            ++digits;
        sw += fontMetrics().width('w') * digits;
    }
    if (d->codeFolding) {
        int fh = fontMetrics().lineSpacing();
        int fw = fontMetrics().width('w');
        d->sidebar->foldIndicatorWidth = qMax(fw, fh);
        sw += d->sidebar->foldIndicatorWidth;
    }
    setViewportMargins(sw, 0, 0, 0);
 
    d->sidebar->setGeometry(0, 0, sw, height());
    QRectF sidebarRect(0, 0, sw, height());
 
    QTextBlock block = firstVisibleBlock();
    int index = 0;
    while (block.isValid()) {
        if (block.isVisible()) {
            QRectF rect = blockBoundingGeometry(block).translated(contentOffset());
            if (sidebarRect.intersects(rect)) {
                if (d->sidebar->lineNumbers.count() >= index)
                    d->sidebar->lineNumbers.resize(index + 1);
                d->sidebar->lineNumbers[index].position = rect.top();
                d->sidebar->lineNumbers[index].number = block.blockNumber() + 1;
                d->sidebar->lineNumbers[index].foldable = d->codeFolding ? isFoldable(block.blockNumber() + 1) : false;
                d->sidebar->lineNumbers[index].folded = d->codeFolding ? isFolded(block.blockNumber() + 1) : false;
                ++index;
            }
            if (rect.top() > sidebarRect.bottom())
                break;
        }
        block = block.next();
    }
    d->sidebar->lineNumbers.resize(index);
    d->sidebar->update();
}

References isFoldable(), and isFolded().

Referenced by fold(), JSEdit(), resizeEvent(), setCodeFoldingEnabled(), setColor(), setLineNumbersVisible(), unfold(), updateSidebar(), and wheelEvent().

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updateSidebar [2/2]

void JSEdit::updateSidebar ( const QRect &  rect, int  d  )

privateslot

Definition at line 943 of file jsedit.cpp.

{
    Q_UNUSED(rect)
    if (d != 0)
        updateSidebar();
}

References updateSidebar().

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wheelEvent()

void JSEdit::wheelEvent ( QWheelEvent *  e )

protected

Definition at line 856 of file jsedit.cpp.

{
    if (e->modifiers() == Qt::ControlModifier) {
        int steps = e->delta() / 20;
        steps = qBound(-3, steps, 3);
        QFont textFont = font();
        int pointSize = textFont.pointSize() + steps;
        pointSize = qBound(10, pointSize, 40);
        textFont.setPointSize(pointSize);
        setFont(textFont);
        updateSidebar();
        e->accept();
        return;
    }
    QPlainTextEdit::wheelEvent(e);
}

References updateSidebar().

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Member Data Documentation

d_ptr

QScopedPointer<JSEditPrivate> JSEdit::d_ptr

private

Definition at line 116 of file jsedit.h.

Referenced by isBracketsMatchingEnabled(), isCodeFoldingEnabled(), isLineNumbersVisible(), isTextWrapEnabled(), JSEdit(), keywords(), mark(), setBracketsMatchingEnabled(), setCodeFoldingEnabled(), setKeywords(), setLineNumbersVisible(), setTextWrapEnabled(), and ~JSEdit().

Property Documentation

bracketsMatchingEnabled

bool JSEdit::bracketsMatchingEnabled

readwrite

Definition at line 53 of file jsedit.h.

codeFoldingEnabled

bool JSEdit::codeFoldingEnabled

readwrite

Definition at line 54 of file jsedit.h.

lineNumbersVisible

bool JSEdit::lineNumbersVisible

readwrite

Definition at line 55 of file jsedit.h.

textWrapEnabled

bool JSEdit::textWrapEnabled

readwrite

Definition at line 56 of file jsedit.h.

---

The documentation for this class was generated from the following files:

• nodes/testSetupNode/jsonGUI/src/jsedit.h
• nodes/testSetupNode/jsonGUI/src/jsedit.cpp