Add a complete SD card font subsystem that enables users to install and use custom fonts beyond the three built-in families. This combines the back-end firmware support (#1327) with the font configuration, build pipeline, CI distribution, and user-facing management UI (#1392). Core font system: - Custom .cpfont binary format (v4) with multi-style support (regular, bold, italic, bold-italic) packed into a single file per size - On-demand glyph loading from SD card with two-pass prewarm rendering to bulk-read glyphs per page, achieving near-flash performance for Latin text (~697ms vs ~681ms) and viable CJK rendering (~32% slower) - Persistent advance cache for layout measurement without SD I/O - Overflow ring buffer for glyph cache misses during rendering - Memory-conscious design: only advance tables kept in RAM; glyph bitmaps, kern tables, and ligatures loaded on demand from SD Font management: - On-device WiFi download from GitHub Releases with manifest-based discovery, install/update detection, and progress UI - Web interface font upload, listing, and deletion via /fonts page - Manual SD card copy to /fonts/ or /.fonts/ directories - Font selection integrated into Settings > Reader > Font Family Build pipeline: - Declarative YAML config (sd-fonts.yaml) as single source of truth for the 17-family font library (serif, sans, mono, accessibility) - Python converter (fontconvert_sdcard.py) for TTF/OTF to .cpfont with FreeType rasterization, class-based kerning, and ligature extraction - Parallel build orchestrator with variable font instance extraction - CI workflow publishing versioned + stable releases to a dedicated crosspoint-fonts repository with auto-incrementing revision tags - Centralized version constants (cpfont_version.py) shared across build tooling and CI, with firmware headers as manual sync points Additional fixes: - CJK characters no longer get hyphens inserted at line breaks - Advance table eliminates 30+ second stalls during CJK section indexing for paragraphs with >512 unique codepoints Closes #930 Co-authored-by: Zach Nelson <zach@zdnelson.com> Co-authored-by: Justin <itsthisjustin@users.noreply.github.com> Co-authored-by: jpirnay <jens@pirnay.com> Co-authored-by: mcrosson <kemonine@kemonine.info>
35 lines
790 B
C++
35 lines
790 B
C++
#pragma once
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#include <SdCardFontRegistry.h>
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#include <string>
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#include <vector>
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#include "activities/Activity.h"
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#include "util/ButtonNavigator.h"
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class FontSelectionActivity final : public Activity {
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public:
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explicit FontSelectionActivity(GfxRenderer& renderer, MappedInputManager& mappedInput,
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const SdCardFontRegistry* registry);
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void onEnter() override;
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void onExit() override;
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void loop() override;
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void render(RenderLock&&) override;
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private:
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void handleSelection();
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struct FontEntry {
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std::string name;
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bool isBuiltin;
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uint8_t settingIndex; // index used by valueSetter
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};
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const SdCardFontRegistry* registry_;
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ButtonNavigator buttonNavigator_;
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std::vector<FontEntry> fonts_;
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int selectedIndex_ = 0;
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};
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