76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
// SPDX-FileCopyrightText: 2024 James Graham <james.h.graham@protonmail.com>
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// SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
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#pragma once
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#include <QAbstractListModel>
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#include <QAbstractTextDocumentLayout>
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#include <QQmlEngine>
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#include <QQuickTextDocument>
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#include <QTextBlock>
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#include <QTextDocument>
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/**
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* @class LineModel
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*
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* A model to provide line info for a QQuickTextDocument.
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*
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* @sa QQuickTextDocument
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*/
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class LineModel : public QAbstractListModel
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{
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Q_OBJECT
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QML_ELEMENT
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public:
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/**
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* @brief Defines the model roles.
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*/
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enum Roles {
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LineHeightRole = Qt::UserRole + 1, /**< The delegate type of the message. */
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};
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Q_ENUM(Roles)
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explicit LineModel(QObject *parent = nullptr);
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void setDocument(QTextDocument *document);
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Q_INVOKABLE void setDocument(QQuickTextDocument *document);
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/**
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* @brief Get the given role value at the given index.
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*
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* @sa QAbstractItemModel::data
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*/
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[[nodiscard]] QVariant data(const QModelIndex &index, int role) const override;
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/**
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* @brief Number of rows in the model.
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*
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* @sa QAbstractItemModel::rowCount
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*/
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[[nodiscard]] int rowCount(const QModelIndex &parent = QModelIndex()) const override;
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/**
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* @brief Returns a mapping from Role enum values to role names.
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*
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* @sa Roles, QAbstractItemModel::roleNames()
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*/
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[[nodiscard]] QHash<int, QByteArray> roleNames() const override;
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/**
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* @brief Reset the model.
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*
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* This needs to be called when the QQuickTextDocument container changes width
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* or height as this may change line heights due to wrapping.
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*
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* @sa QQuickTextDocument
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*/
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Q_INVOKABLE void resetModel();
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Q_SIGNALS:
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void documentChanged();
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private:
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QPointer<QTextDocument> m_document = nullptr;
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};
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