textlayout.h

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// edbee - Copyright (c) 2012-2025 by Rick Blommers and contributors
// SPDX-License-Identifier: MIT
 
#pragma once
 
#include "edbee/exports.h"
 
#include <QRectF>
#include <QTextLine>
#include <QTextLayout>
 
#include "edbee/models/textrange.h"
 
class QTextLayout;
 
namespace edbee {
 
class TextLayout;

class TextLayout
{
public:
    TextLayout(TextDocument* document);
    virtual ~TextLayout();
 
    void setCacheEnabled(bool enable);
    QTextLayout* qTextLayout() const;
    QRectF boundingRect() const;
 
 
    void buildLayout();
 
    int toVirtualCursorPosition(int cursor) const;
    int fromVirtualCursorPosition(int cursor) const;
 
 
    void draw(QPainter *p, const QPointF &pos, const QVector<QTextLayout::FormatRange> &selections = QVector<QTextLayout::FormatRange>(), const QRectF &clip = QRectF()) const;
    void drawCursor(QPainter *painter, const QPointF &position, int cursorPosition, int width) const;
 
    void setFormats(const QVector<QTextLayout::FormatRange> &formats);
    void setText(const QString &string);
 
    void useSingleCharRanges();
    TextRangeSet* singleCharRanges() const;
    void addSingleCharRange(int index, int length);
 

    qreal cursorToX(int cursorPos, QTextLine::Edge edge = QTextLine::Leading) const;
    int xToCursor(qreal x, QTextLine::CursorPosition cpos = QTextLine::CursorBetweenCharacters) const;
 
protected:
    QTextLayout *qtextLayout_;
    TextDocument *textDocumentRef_;
    TextRangeSet *singleCharRanges_;         
    QTextLine qtextLine_;
};
class TextLayout {…};
 
 
//=================================================
 
class TextLayoutBuilder
{
public:
    TextLayoutBuilder(TextLayout* textLayout, QString & baseString, QVector<QTextLayout::FormatRange> & baseFormatRanges);
 
    void replace(int index, int length, const QString replacement, QTextCharFormat format);
 
 
protected:
    TextLayout* textLayoutRef_;                                
    QString & baseString_;                                     
    QVector<QTextLayout::FormatRange> & baseFormatRanges_;     
};
class TextLayoutBuilder {…};
 
} // edbee