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feat: dict based Hyphenation (#305)

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## Summary

* Adds (optional) Hyphenation for English, French, German, Russian
languages

## Additional Context

* Included hyphenation dictionaries add approximately 280kb to the flash
usage (German alone takes 200kb)
* Trie encoded dictionaries are adopted from hypher project
(https://github.com/typst/hypher)
* Soft hyphens (and other explicit hyphens) take precedence over
dict-based hyphenation. Overall, the hyphenation rules are quite
aggressive, as I believe it makes more sense on our smaller screen.

---------

Co-authored-by: Dave Allie <dave@daveallie.com>
This commit is contained in:
Arthur Tazhitdinov
2026-01-19 17:56:26 +05:00
committed by GitHub
parent 5fef99c641
commit 8824c87490
40 changed files with 36465 additions and 52 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/activities/reader/EpubReaderActivity.cpp
View File

@@ -280,7 +280,7 @@ void EpubReaderActivity::renderScreen() {
if (!section->loadSectionFile(SETTINGS.getReaderFontId(), SETTINGS.getReaderLineCompression(),
SETTINGS.extraParagraphSpacing, SETTINGS.paragraphAlignment, viewportWidth,
viewportHeight)) {
viewportHeight, SETTINGS.hyphenationEnabled)) {
Serial.printf("[%lu] [ERS] Cache not found, building...\n", millis());
// Progress bar dimensions
@@ -325,7 +325,7 @@ void EpubReaderActivity::renderScreen() {
if (!section->createSectionFile(SETTINGS.getReaderFontId(), SETTINGS.getReaderLineCompression(),
SETTINGS.extraParagraphSpacing, SETTINGS.paragraphAlignment, viewportWidth,
viewportHeight, progressSetup, progressCallback)) {
viewportHeight, SETTINGS.hyphenationEnabled, progressSetup, progressCallback)) {
Serial.printf("[%lu] [ERS] Failed to persist page data to SD\n", millis());
section.reset();
return;

3
src/activities/settings/SettingsActivity.cpp
View File

@@ -14,7 +14,7 @@
// Define the static settings list
namespace {
constexpr int settingsCount = 21;
constexpr int settingsCount = 22;
const SettingInfo settingsList[settingsCount] = {
// Should match with SLEEP_SCREEN_MODE
SettingInfo::Enum("Sleep Screen", &CrossPointSettings::sleepScreen, {"Dark", "Light", "Custom", "Cover", "None"}),
@@ -38,6 +38,7 @@ const SettingInfo settingsList[settingsCount] = {
SettingInfo::Value("Reader Screen Margin", &CrossPointSettings::screenMargin, {5, 40, 5}),
SettingInfo::Enum("Reader Paragraph Alignment", &CrossPointSettings::paragraphAlignment,
{"Justify", "Left", "Center", "Right"}),
SettingInfo::Toggle("Hyphenation", &CrossPointSettings::hyphenationEnabled),
SettingInfo::Enum("Time to Sleep", &CrossPointSettings::sleepTimeout,
{"1 min", "5 min", "10 min", "15 min", "30 min"}),
SettingInfo::Enum("Refresh Frequency", &CrossPointSettings::refreshFrequency,