MailJDTourDownloadDocsQualityTestsCoverage

Which source lines and branches the tests execute. Lines 91.5 %, branches 75.0 % (minimum 85 % and 72 %). main @ 399ffe3d · 21 October 2026 · pipeline 7238.

GCC Code Coverage Report

Directory: src/
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 92.3% 228 / 0 / 247
Functions: 87.5% 14 / 0 / 16
Branches: 85.3% 272 / 0 / 319
service/NativeDocumentService.cpp
Line Branch Exec Source
1 #include "NativeDocumentService.h"
2
3 #include <QCoreApplication>
4 #include <QFutureWatcher>
5 #include <QtConcurrent>
6 #include <QTextDocument>
7 #include <QTextTable>
8 #include <QFontMetricsF>
9 #include <QStandardPaths>
10 #include <QDir>
11 #include <QGuiApplication>
12 #include <QDataStream>
13 #include <algorithm>
14 #include "util/Utf8Digest.h"
15
16 32 NativeDocumentService::NativeDocumentService(QObject *parent, QString cacheDirectory)
17
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 32 : QObject(parent), m_cache(std::make_unique<NativeDocumentCache>(std::move(cacheDirectory))) {
18
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 32 m_pool.setMaxThreadCount(1);
19
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 32 m_pool.setExpiryTimeout(-1);
20
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 32 connect(QCoreApplication::instance(), &QCoreApplication::aboutToQuit, this,
21 32 [this] { stop(); });
22 32 }
23
24 42 NativeDocumentService::~NativeDocumentService() {
25 32 stop();
26 42 }
27
28 34 void NativeDocumentService::stop() {
29 34 m_stopping = true;
30
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 34 if (m_active) m_active->cancelled->store(true, std::memory_order_relaxed);
31 34 m_pending.clear();
32
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 34 m_pool.waitForDone();
33 34 }
34
35 10 NativeDocumentService *NativeDocumentService::shared() {
36
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 10 static QPointer<NativeDocumentService> instance;
37
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 20 if (!instance) instance = new NativeDocumentService(QCoreApplication::instance(),
38
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 10 QDir(QStandardPaths::writableLocation(QStandardPaths::CacheLocation)).filePath("native-documents-v1"));
39 10 return instance;
40 }
41
42 1190 void NativeDocumentService::cancel(QObject *owner) {
43
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 1190 if (m_active && m_active->owner == owner)
44 1008 m_active->cancelled->store(true, std::memory_order_relaxed);
45
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 2350 for (qsizetype i = m_pending.size(); i > 0; --i)
46
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 1160 if (!m_pending[i - 1].owner || m_pending[i - 1].owner == owner)
47 999 m_pending.removeAt(i - 1);
48 1190 }
49
50 1095 void NativeDocumentService::prepare(QObject *owner, const QByteArray &html, Callback callback,
51 NativeImageContext images, std::optional<QFont> displayFont) {
52
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 1095 cancel(owner);
53
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 1097 if (!owner) return;
54
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 1094 if (m_stopping) {
55 1 NativeMailDocument result;
56 1 result.outcome = NativeMailDocument::Outcome::Cancelled;
57
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 1 callback(result);
58 1 return;
59 1 }
60
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 1093 if (html.size() > NativeMailDocument::MaxInputBytes) {
61 1 NativeMailDocument result;
62 1 result.outcome = NativeMailDocument::Outcome::Limited;
63
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 1 callback(result);
64 1 return;
65 1 }
66
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 1092 Request request;
67
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 1092 request.owner = owner;
68 1092 request.input = html;
69 1092 request.callback = std::move(callback);
70 1092 request.images = std::move(images);
71
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 1092 request.defaultFont = displayFont.value_or(QGuiApplication::font());
72
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 2184 request.cacheKey = NativeDocumentCache::key(request.images.databasePath,
73 1092 request.images.folderId, request.images.uid, request.images.uidValidity, html);
74
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 1092 enqueue(std::move(request));
75 1092 }
76
77 26 void NativeDocumentService::prepareDecodedHtml(QObject *owner, const QString &html,
78 Callback callback, NativeImageContext images,
79 std::optional<QFont> displayFont,
80 QByteArray htmlDigest) {
81
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 26 cancel(owner);
82
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 27 if (!owner) return;
83
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 26 if (m_stopping) {
84 ✗ NativeMailDocument result;
85 ✗ result.outcome = NativeMailDocument::Outcome::Cancelled;
86 ✗ callback(result);
87 ✗ return;
88 ✗ }
89 // A UTF-16 code unit always contributes at least one UTF-8 byte. Reject
90 // oversized documents before allocating or hashing any encoded chunks.
91
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 26 if (html.size() > NativeMailDocument::MaxInputBytes) {
92 1 NativeMailDocument result;
93 1 result.outcome = NativeMailDocument::Outcome::Limited;
94
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 1 callback(result);
95 1 return;
96 1 }
97 // Display snapshots carry the exact digest from their read worker.
98 // Callers without that hint keep the bounded local fallback.
99
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 25 if (htmlDigest.size() != 64) {
100
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 12 const auto digest = MailJD::sha256Utf8HexUpTo(html, NativeMailDocument::MaxInputBytes);
101
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 12 if (!digest) {
102 ✗ NativeMailDocument result;
103 ✗ result.outcome = NativeMailDocument::Outcome::Limited;
104 ✗ callback(result);
105 ✗ return;
106 ✗ }
107 12 htmlDigest = *digest;
108 12 }
109
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 25 Request request;
110
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 25 request.owner = owner;
111 25 request.decodedInput = html;
112 25 request.callback = std::move(callback);
113
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 25 images.expectedHtml.clear();
114 25 request.images = std::move(images);
115
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 25 request.defaultFont = displayFont.value_or(QGuiApplication::font());
116
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 50 request.cacheKey = NativeDocumentCache::keyWithDigest(request.images.databasePath,
117 request.images.folderId, request.images.uid, request.images.uidValidity,
118 25 htmlDigest);
119
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 25 enqueue(std::move(request));
120 25 }
121
122 1117 void NativeDocumentService::enqueue(Request request) {
123
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 1117 if (!request.cacheKey.isEmpty()) {
124 70 request.preparedKey = request.cacheKey;
125
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 70 QDataStream fontStream(&request.preparedKey, QIODevice::Append);
126
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 70 fontStream << request.images.loadInlineImages << request.defaultFont;
127 70 }
128
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 1117 if (auto ready = preparedResult(request)) {
129
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 13 request.callback(std::move(*ready));
130 13 return;
131 1117 }
132
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 1104 m_pending.append(std::move(request));
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 1104 QPointer<NativeDocumentService> self(this);
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 1104 if (m_pending.size() > 8) {
135
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 13 auto dropped = m_pending.takeFirst();
136 13 NativeMailDocument result;
137 13 result.outcome = NativeMailDocument::Outcome::Cancelled;
138
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 13 if (dropped.owner) dropped.callback(result);
139 13 }
140
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 1104 if (self) startNext();
141 1104 }
142
143 1200 std::optional<NativeMailDocument> NativeDocumentService::preparedResult(const Request &request) {
144
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 1200 if (request.preparedKey.isEmpty()) return {};
145
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 127 if (auto *ready = m_prepared.object(request.preparedKey)) {
146 16 auto result = *ready;
147 16 result.cacheHit = true;
148 16 return result;
149 16 }
150 111 return {};
151 }
152
153 1179 void NativeDocumentService::startNext() {
154
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 1242 if (m_stopping || m_active) return;
155
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 145 while (!m_stopping && !m_active && !m_pending.isEmpty()) {
156
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 84 auto request = m_pending.takeFirst();
157
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 84 if (!request.owner) continue;
158 // A preceding request may have prepared this same document while it
159 // waited. Do not send it through the worker queue again.
160
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 83 if (auto ready = preparedResult(request)) {
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 3 QPointer<NativeDocumentService> self(this);
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 3 request.callback(std::move(*ready));
163
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 3 if (!self || m_active) return;
164 1 continue;
165 86 }
166
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 80 m_active = std::move(request);
167 80 break;
168 84 }
169
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 141 if (m_stopping || !m_active) return;
170
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 80 auto *watcher = new QFutureWatcher<NativeMailDocument>(this);
171
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 80 connect(watcher, &QFutureWatcher<NativeMailDocument>::finished, this, [this, watcher] {
172
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 77 auto request = std::move(*m_active);
173 77 m_active.reset();
174 // The prepared fragment and decoded image map have one consumer. Move
175 // them out of the completed future before invoking the reader callback.
176
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 77 auto result = watcher->future().takeResult();
177
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 77 watcher->deleteLater();
178
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 77 if (request.owner && !request.cancelled->load(std::memory_order_relaxed)) {
179
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 70 const bool hasInlineReferences = std::any_of(
180 result.imageReferences.cbegin(), result.imageReferences.cend(),
181 12 [](const NativeMailDocument::ImageReference &reference) {
182 12 return !reference.contentId.isEmpty();
183 });
184
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 121 if (!request.preparedKey.isEmpty() && result.outcome == NativeMailDocument::Outcome::Ready &&
185
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 51 (!request.images.loadInlineImages || (result.fragment && !hasInlineReferences))) {
186 46 qsizetype charge = result.html.size() * 16 + result.plainText.size() * 2
187 46 + qsizetype(qMax(0, result.nodes)) * 256 + 4096;
188
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 50 for (const auto &reference : result.imageReferences)
189 4 charge += 128 + 2 * (reference.placeholder.size() + reference.contentId.size()
190
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 4 + reference.remoteUrl.toString().size());
191
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 46 if (charge <= m_prepared.maxCost())
192
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 45 m_prepared.insert(request.preparedKey, new NativeMailDocument(result), int(charge));
193 }
194
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 70 QPointer<NativeDocumentService> self(this);
195
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 70 request.callback(std::move(result));
196
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 70 if (!self) return;
197 70 }
198
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 76 startNext();
199
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 78 });
200 80 const QByteArray input = m_active->input;
201 80 const QString decodedInput = m_active->decodedInput;
202 80 const auto cancelled = m_active->cancelled;
203 80 const auto images = m_active->images;
204
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 80 const auto defaultFont = m_active->defaultFont;
205 80 auto *cache = m_cache.get();
206 80 const auto cacheKey = m_active->cacheKey;
207
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 80 watcher->setFuture(QtConcurrent::run(&m_pool, [input, decodedInput, cancelled, images, defaultFont, cache, cacheKey] {
208 6 const auto abandoned = [] {
209 6 NativeMailDocument result;
210 6 result.outcome = NativeMailDocument::Outcome::Cancelled;
211 6 return result;
212 };
213 80 const auto key = cacheKey;
214
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 80 if (cancelled->load()) return abandoned();
215
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 75 const auto cached = cache->get(key);
216
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 75 if (cancelled->load()) return abandoned();
217 75 QByteArray encoded = input;
218
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 75 if (!cached && !decodedInput.isNull()) {
219
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 15 encoded = decodedInput.toUtf8();
220
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 15 if (encoded.size() > NativeMailDocument::MaxInputBytes) {
221 ✗ NativeMailDocument result;
222 ✗ result.outcome = NativeMailDocument::Outcome::Limited;
223 ✗ return result;
224 ✗ }
225
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 15 if (cancelled->load()) return abandoned();
226 }
227
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 74 auto result = cached ? *cached : NativeMailDocument::prepare(encoded, cancelled.get());
228 74 result.cacheHit = cached.has_value();
229
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 74 if (result.outcome == NativeMailDocument::Outcome::Ready && !cancelled->load()) {
230 class TextDocument : public QTextDocument {
231 ✗ QVariant loadResource(int, const QUrl &) override { return QByteArray(); }
232
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 73 } document;
233
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 73 document.setDefaultFont(defaultFont);
234
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 73 if (!cached) {
235
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 66 document.setHtml(result.html);
236 // setHtml itself is not cooperative. Once it returns, skip its
237 // full-document export if another selection already owns the lane.
238
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 66 if (cancelled->load()) return abandoned();
239
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 66 result.plainText = document.toPlainText();
240
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 66 if (!cancelled->load()) cache->put(key, result);
241 }
242
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 73 if (cancelled->load()) return abandoned();
243 73 QStringList ids;
244
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 85 for (const auto &reference : result.imageReferences)
245
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 12 if (!reference.contentId.isEmpty()) ids.append(reference.contentId);
246
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 75 if (cached && !ids.isEmpty() && images.loadInlineImages &&
247
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 2 !decodedInput.isNull()) {
248
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 2 encoded = decodedInput.toUtf8();
249
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 2 if (encoded.size() > NativeMailDocument::MaxInputBytes) {
250 ✗ NativeMailDocument limited;
251 ✗ limited.outcome = NativeMailDocument::Outcome::Limited;
252 ✗ return limited;
253 ✗ }
254
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 2 if (cancelled->load()) return abandoned();
255 }
256 73 auto imageContext = images;
257
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 73 if (!decodedInput.isNull()) imageContext.expectedHtml = encoded;
258 73 const auto decoded = images.loadInlineImages
259
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 73 ? NativeImageResources::loadResident(imageContext, ids, cancelled.get()) : QHash<QString, QImage>{};
260
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 73 if (cancelled->load()) return abandoned();
261
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 85 for (qsizetype i = 0; i < result.imageReferences.size(); ++i) {
262
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 12 if (cancelled->load()) return abandoned();
263
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 12 const auto &reference = result.imageReferences[i];
264 12 const auto found = decoded.constFind(reference.contentId);
265
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 12 if (found == decoded.cend()) continue;
266
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 6 const QUrl url(QStringLiteral("mailjd-native-image:%1").arg(i));
267
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 3 result.images.insert(url, *found);
268
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 3 result.html.replace(reference.placeholder,
269
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 9 QStringLiteral("<img src=\"%1\">").arg(url.toString()));
270 3 }
271
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 73 if (images.loadInlineImages && !cancelled->load()) {
272 // Preserve the parsed rich-text structure across the worker handoff.
273 // The persistent cache stores only normalized strings and metadata.
274 // Resource-free fragments may also enter the bounded memory cache.
275
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 63 if (cached || !result.images.isEmpty()) document.setHtml(result.html);
276
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 63 if (cancelled->load()) return abandoned();
277 // Apply the same table spacing before capturing the reusable rich
278 // fragment. Walking and rewriting every table on the GUI callback
279 // delays the first visible HTML-light frame.
280
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 63 auto frames = document.rootFrame()->childFrames();
281 126 const auto padding = qMax(4.0,
282
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 63 QFontMetricsF(document.defaultFont()).height() / 3.0);
283
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 74 while (!frames.isEmpty()) {
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 11 if (cancelled->load()) return abandoned();
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 11 auto *frame = frames.takeLast();
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 11 frames.append(frame->childFrames());
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 11 if (auto *table = qobject_cast<QTextTable *>(frame)) {
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 8 auto format = table->format();
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 8 format.setCellPadding(padding);
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 8 table->setFormat(format);
291 8 }
292 }
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 63 if (cancelled->load()) return abandoned();
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 63 result.fragment = QSharedPointer<const QTextDocumentFragment>::create(&document);
295
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 63 if (cancelled->load()) return abandoned();
296 // Qt 6.8 lazily creates the fragment's private root frame when a
297 // cursor first traverses a simple document. Materialize it on the
298 // worker before read-only insertion on the GUI thread. The export
299 // is discarded here; it never replaces normalized or source bytes.
300
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 63 (void)result.fragment->toHtml();
301
302 63 }
303 73 }
304 74 return result;
305 80 }));
306 80 }
307