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/*
textdocumentmodel.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2010 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "textdocumentmodel.h"
#include <QAbstractTextDocumentLayout>
#include <QTextCursor>
#include <QTextDocument>
#include <QTextFrame>
#include <QTextTable>
using namespace GammaRay;
static QString formatTypeToString(int type)
{
switch (type) {
case QTextFormat::InvalidFormat:
return QStringLiteral("Invalid");
case QTextFormat::BlockFormat:
return QStringLiteral("Block");
case QTextFormat::CharFormat:
return QStringLiteral("Char");
case QTextFormat::ListFormat:
return QStringLiteral("List");
case QTextFormat::FrameFormat:
return QStringLiteral("Frame");
case QTextFormat::UserFormat:
return QStringLiteral("User");
}
return QStringLiteral("Unknown format: %1").arg(type);
}
TextDocumentModel::TextDocumentModel(QObject *parent)
: QStandardItemModel(parent)
, m_document(nullptr)
{
}
void TextDocumentModel::setDocument(QTextDocument *doc)
{
if (m_document)
disconnect(m_document, &QTextDocument::contentsChanged, this, &TextDocumentModel::documentChanged);
m_document = doc;
fillModel();
if (m_document)
connect(m_document, &QTextDocument::contentsChanged, this, &TextDocumentModel::documentChanged);
}
void TextDocumentModel::documentChanged()
{
// TODO
fillModel();
}
void TextDocumentModel::fillModel()
{
clear();
if (!m_document)
return;
QStandardItem *item = new QStandardItem(tr("Root Frame"));
const QTextFormat f = m_document->rootFrame()->frameFormat();
item->setData(QVariant::fromValue(f), FormatRole);
item->setEditable(false);
QStandardItemModel::appendRow(QList<QStandardItem *>()
<< item
<< formatItem(m_document->rootFrame()->frameFormat()));
fillFrame(m_document->rootFrame(), item);
setHorizontalHeaderLabels(QStringList() << tr("Element") << tr("Format"));
}
void TextDocumentModel::fillFrame(QTextFrame *frame, QStandardItem *parent)
{
for (auto it = frame->begin(); it != frame->end(); ++it)
fillFrameIterator(it, parent);
}
void TextDocumentModel::fillFrameIterator(const QTextFrame::iterator &it, QStandardItem *parent)
{
if (QTextFrame *frame = it.currentFrame()) {
const QRectF b = m_document->documentLayout()->frameBoundingRect(frame);
QTextTable *table = qobject_cast<QTextTable *>(frame);
auto item = new QStandardItem;
if (table) {
item->setText(tr("Table"));
appendRow(parent, item, table->format(), b);
fillTable(table, item);
} else {
item->setText(tr("Frame"));
appendRow(parent, item, frame->frameFormat(), b);
fillFrame(frame, item);
}
}
const QTextBlock block = it.currentBlock();
if (block.isValid()) {
auto item = new QStandardItem;
item->setText(tr("Block: %1").arg(block.text()));
const QRectF b = m_document->documentLayout()->blockBoundingRect(block);
appendRow(parent, item, block.blockFormat(), b);
fillBlock(block, item);
}
}
void TextDocumentModel::fillTable(QTextTable *table, QStandardItem *parent)
{
for (int row = 0; row < table->rows(); ++row) {
for (int col = 0; col < table->columns(); ++col) {
QTextTableCell cell = table->cellAt(row, col);
auto *item = new QStandardItem;
item->setText(tr("Cell %1x%2").arg(row).arg(col));
appendRow(parent, item, cell.format());
for (auto it = cell.begin(); it != cell.end(); ++it)
fillFrameIterator(it, item);
}
}
}
void TextDocumentModel::fillBlock(const QTextBlock &block, QStandardItem *parent)
{
for (auto it = block.begin(); it != block.end(); ++it) {
QStandardItem *item = new QStandardItem(tr("Fragment: %1").arg(it.fragment().text()));
const QRectF b = m_document->documentLayout()->blockBoundingRect(block);
appendRow(parent, item, it.fragment().charFormat(), b);
if (!block.layout())
continue;
foreach (const auto &range, block.layout()->formats()) {
const auto start = std::max(range.start, it.fragment().position() - block.position());
const auto end = std::min(range.start + range.length,
it.fragment().position() + it.fragment().length()
- block.position());
if (start >= end)
continue;
auto child = new QStandardItem(tr("Layout Range: %1").arg(it.fragment().text().mid(start, end - start)));
appendRow(item, child, range.format, QRectF());
}
}
}
QStandardItem *TextDocumentModel::formatItem(const QTextFormat &format)
{
auto *item = new QStandardItem;
if (!format.isValid()) {
item->setText(tr("no format"));
} else if (format.isImageFormat()) {
const QTextImageFormat imgformat = format.toImageFormat();
item->setText(tr("Image: %1").arg(imgformat.name()));
} else {
item->setText(formatTypeToString(format.type()));
}
item->setEditable(false);
return item;
}
void TextDocumentModel::appendRow(QStandardItem *parent, QStandardItem *item,
const QTextFormat &format, const QRectF &boundingBox)
{
item->setData(QVariant::fromValue(format), FormatRole);
item->setData(boundingBox, BoundingBoxRole);
item->setEditable(false);
parent->appendRow(QList<QStandardItem *>() << item << formatItem(format));
}
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