qquicktextselection.cpp

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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qquicktextselection_p.h"
 
#include <QFont>
#include <QTextOption>
#include <QtQuick/private/qquicktextcontrol_p.h>
#include <QtQuick/private/qquicktextcontrol_p_p.h>
#include <QtQuick/private/qquicktextedit_p_p.h>
 
QT_BEGIN_NAMESPACE
 
QQuickTextSelection::QQuickTextSelection(QObject *parent)
    : QObject(parent)
{
    // When QQuickTextEdit creates its cursorSelection, it passes itself as the parent
    if (auto *textEdit = qmlobject_cast<QQuickTextEdit *>(parent)) {
        m_control = QQuickTextEditPrivate::get(textEdit)->control;
        connect(m_control, &QQuickTextControl::currentCharFormatChanged,
                this, &QQuickTextSelection::updateFromCharFormat);
        connect(m_control, &QQuickTextControl::cursorPositionChanged,
                this, &QQuickTextSelection::updateFromBlockFormat);
    }
}
 
QString QQuickTextSelection::text() const
{
    return cursor().selectedText();
}
 
void QQuickTextSelection::setText(const QString &text)
{
    auto cur = cursor();
    if (cur.selectedText() == text)
        return;
 
    cur.insertText(text);
    emit textChanged();
}
 
QFont QQuickTextSelection::font() const
{
    return cursor().charFormat().font();
}
 
void QQuickTextSelection::setFont(const QFont &font)
{
    auto cur = cursor();
    if (cur.selection().isEmpty())
        cur.select(QTextCursor::WordUnderCursor);
 
    if (font == cur.charFormat().font())
        return;
 
    QTextCharFormat fmt;
    fmt.setFont(font);
    cur.mergeCharFormat(fmt);
    emit fontChanged();
}
 
QColor QQuickTextSelection::color() const
{
    return cursor().charFormat().foreground().color();
}
 
void QQuickTextSelection::setColor(QColor color)
{
    auto cur = cursor();
    if (cur.selection().isEmpty())
        cur.select(QTextCursor::WordUnderCursor);
 
    if (color == cur.charFormat().foreground().color())
        return;
 
    QTextCharFormat fmt;
    fmt.setForeground(color);
    cur.mergeCharFormat(fmt);
    emit colorChanged();
}
 
Qt::Alignment QQuickTextSelection::alignment() const
{
    return cursor().blockFormat().alignment();
}
 
void QQuickTextSelection::setAlignment(Qt::Alignment align)
{
    if (align == alignment())
        return;
 
    QTextBlockFormat format;
    format.setAlignment(align);
    cursor().mergeBlockFormat(format);
    emit alignmentChanged();
}
 
QTextCursor QQuickTextSelection::cursor() const
{
    if (m_control)
        return m_control->textCursor();
    return m_cursor;
}
 
inline void QQuickTextSelection::updateFromCharFormat(const QTextCharFormat &fmt)
{
    if (fmt.font() != m_charFormat.font())
        emit fontChanged();
    if (fmt.foreground().color() != m_charFormat.foreground().color())
        emit colorChanged();
 
    m_charFormat = fmt;
}
 
inline void QQuickTextSelection::updateFromBlockFormat()
{
    QTextBlockFormat fmt = cursor().blockFormat();
 
    if (fmt.alignment() != m_blockFormat.alignment())
        emit alignmentChanged();
 
    m_blockFormat = fmt;
}
 
QT_END_NAMESPACE
 
#include "moc_qquicktextselection_p.cpp"