55 lines
2.3 KiB
C++
55 lines
2.3 KiB
C++
#pragma once
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#include <cstdint>
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#include <string>
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#include <vector>
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struct SdCardFontFileInfo {
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std::string path; // v4 on-disk naming: "/.crosspoint/fonts/<Family>/<Family>_<size>.cpfont"
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// e.g. "/.crosspoint/fonts/NotoSansCJK/NotoSansCJK_14.cpfont"
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uint8_t pointSize; // parsed from filename: 14
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uint8_t style; // always 0 in v4 (all 4 styles bundled in one file);
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// kept for potential future formats
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};
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struct SdCardFontFamilyInfo {
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std::string name; // directory name, e.g. "NotoSansCJK"
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std::vector<SdCardFontFileInfo> files;
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const SdCardFontFileInfo* findFile(uint8_t size, uint8_t style = 0) const;
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bool hasSize(uint8_t size) const;
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std::vector<uint8_t> availableSizes() const;
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// Pick the file whose pointSize is closest to targetPtSize. On ties (equal
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// distance) prefers the smaller pointSize so behaviour is deterministic
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// across SD card layouts. Returns nullptr when files is empty.
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const SdCardFontFileInfo* pickClosestSize(uint8_t targetPtSize) const;
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};
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class SdCardFontRegistry {
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public:
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static constexpr int MAX_SD_FAMILIES = 128;
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// Primary (writable) location. All installs/downloads/deletes target this root.
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static constexpr const char* FONTS_DIR = "/.crosspoint/fonts";
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// Read-only fallback roots for upstream crosspoint-reader compatibility.
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// Upstream uses "/.fonts" (preferred, hidden) and "/fonts" (visible). Both are
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// scanned after the primary; primary wins on family-name conflicts.
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static constexpr const char* FONTS_DIR_UPSTREAM_HIDDEN = "/.fonts";
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static constexpr const char* FONTS_DIR_UPSTREAM_VISIBLE = "/fonts";
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// Scan SD card, populate families_. Returns true if any families found.
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bool discover();
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const std::vector<SdCardFontFamilyInfo>& getFamilies() const { return families_; }
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const SdCardFontFamilyInfo* findFamily(const std::string& name) const;
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int getFamilyIndex(const std::string& name) const;
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int getFamilyCount() const { return static_cast<int>(families_.size()); }
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private:
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std::vector<SdCardFontFamilyInfo> families_; // sorted alphabetically
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static bool parseFilename(const char* filename, uint8_t& size, uint8_t& style);
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void scanDirectory(const char* dirPath, SdCardFontFamilyInfo& family);
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void scanRoot(const char* rootPath);
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};
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