mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-05 07:07:38 +03:00
6fbdd06101
Display book cover image as background in the Continue Reading card on the home screen, improving visual identification of the current book. Key changes: - Add thumbnail generation (thumb.bmp) for EPUB and XTC/XTCH files - Uses same dithering/scaling algorithms as sleep screen covers - Target size: 240x400 (half screen) for optimal Continue Reading card fit - Add JpegToBmpConverter::jpegFileToBmpStreamWithSize() for custom target sizes - Add GfxRenderer::copyStoredBwBuffer() and freeStoredBwBuffer() for framebuffer caching to maintain fast navigation performance - Add UTF-8 safe string truncation for Korean/CJK text in title/author display - Draw white boxes behind title/author text for readability over cover image - Increase HomeActivityTask stack size to 4096 for cover image rendering - Add bounds checking in XTC thumbnail generation to prevent buffer overflow
104 lines
2.6 KiB
C++
104 lines
2.6 KiB
C++
/**
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* Xtc.h
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*
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* Main XTC ebook class for CrossPoint Reader
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* Provides EPUB-like interface for XTC file handling
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*/
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#pragma once
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#include <memory>
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#include <string>
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#include <vector>
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#include "Xtc/XtcParser.h"
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#include "Xtc/XtcTypes.h"
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/**
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* XTC Ebook Handler
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*
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* Handles XTC file loading, page access, and cover image generation.
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* Interface is designed to be similar to Epub class for easy integration.
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*/
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class Xtc {
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std::string filepath;
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std::string cachePath;
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std::unique_ptr<xtc::XtcParser> parser;
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bool loaded;
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public:
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explicit Xtc(std::string filepath, const std::string& cacheDir) : filepath(std::move(filepath)), loaded(false) {
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// Create cache key based on filepath (same as Epub)
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cachePath = cacheDir + "/xtc_" + std::to_string(std::hash<std::string>{}(this->filepath));
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}
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~Xtc() = default;
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/**
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* Load XTC file
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* @return true on success
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*/
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bool load();
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/**
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* Clear cached data
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* @return true on success
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*/
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bool clearCache() const;
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/**
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* Setup cache directory
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*/
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void setupCacheDir() const;
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// Path accessors
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const std::string& getCachePath() const { return cachePath; }
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const std::string& getPath() const { return filepath; }
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// Metadata
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std::string getTitle() const;
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bool hasChapters() const;
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const std::vector<xtc::ChapterInfo>& getChapters() const;
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// Cover image support (for sleep screen)
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std::string getCoverBmpPath() const;
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bool generateCoverBmp() const;
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// Thumbnail support (for Continue Reading card)
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std::string getThumbBmpPath() const;
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bool generateThumbBmp() const;
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// Page access
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uint32_t getPageCount() const;
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uint16_t getPageWidth() const;
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uint16_t getPageHeight() const;
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uint8_t getBitDepth() const; // 1 = XTC (1-bit), 2 = XTCH (2-bit)
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/**
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* Load page bitmap data
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* @param pageIndex Page index (0-based)
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* @param buffer Output buffer
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* @param bufferSize Buffer size
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* @return Number of bytes read
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*/
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size_t loadPage(uint32_t pageIndex, uint8_t* buffer, size_t bufferSize) const;
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/**
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* Load page with streaming callback
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* @param pageIndex Page index
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* @param callback Callback for each chunk
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* @param chunkSize Chunk size
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* @return Error code
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*/
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xtc::XtcError loadPageStreaming(uint32_t pageIndex,
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std::function<void(const uint8_t* data, size_t size, size_t offset)> callback,
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size_t chunkSize = 1024) const;
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// Progress calculation
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uint8_t calculateProgress(uint32_t currentPage) const;
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// Check if file is loaded
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bool isLoaded() const { return loaded; }
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// Error information
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xtc::XtcError getLastError() const;
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};
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