mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2026-02-04 14:47:37 +03:00
f0ac68d26c
- Renamed `getIndentWidth` to `getTextAdvanceX` - Collapsed `Style` and `BlockStyle` into a single struct, and switched to using bitflag setup for determining font style in `EpdFontFamily::Style`, including underlined text - Added caching for parsed CSS rules - Reverted changes for fixing spurious spaces - Skipped loading CSS on Sleep and HomeScreen activities, since we only need BookMetadata and the cover image - Reverted changes to BookMetadataCache, since we don't need to cache the individual CSS files and can instead use the parsed CSS rules (and the new cache file for those) - Switched intermediary values to direct assignment in `CssParser.cpp` - Added function in `BlockStyle.h` to directly convert from a `CssStyle` to a `BlockStyle`, as well as combined multiple `BlockStyle`s together for nested elements that should inherit the parent's style when the child's is unspecified - Updated names of variables in `CssStyle` to match those of the CSS they represent (e.g. alignment -> textAlign, indent -> textIndent) - General cleaning up and simplifying the code
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
#pragma once
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#include <expat.h>
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#include <climits>
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#include <functional>
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#include <memory>
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#include "../ParsedText.h"
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#include "../blocks/TextBlock.h"
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#include "../css/CssParser.h"
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#include "../css/CssStyle.h"
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class Page;
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class GfxRenderer;
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#define MAX_WORD_SIZE 200
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class ChapterHtmlSlimParser {
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const std::string& filepath;
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GfxRenderer& renderer;
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std::function<void(std::unique_ptr<Page>)> completePageFn;
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std::function<void()> popupFn; // Popup callback
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int depth = 0;
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int skipUntilDepth = INT_MAX;
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int boldUntilDepth = INT_MAX;
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int italicUntilDepth = INT_MAX;
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int underlineUntilDepth = INT_MAX;
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// buffer for building up words from characters, will auto break if longer than this
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// leave one char at end for null pointer
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char partWordBuffer[MAX_WORD_SIZE + 1] = {};
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int partWordBufferIndex = 0;
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std::unique_ptr<ParsedText> currentTextBlock = nullptr;
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std::unique_ptr<Page> currentPage = nullptr;
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int16_t currentPageNextY = 0;
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int fontId;
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float lineCompression;
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bool extraParagraphSpacing;
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uint8_t paragraphAlignment;
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uint16_t viewportWidth;
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uint16_t viewportHeight;
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bool hyphenationEnabled;
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const CssParser* cssParser;
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// Style tracking (replaces depth-based approach)
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struct StyleStackEntry {
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int depth = 0;
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bool hasBold = false, bold = false;
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bool hasItalic = false, italic = false;
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bool hasUnderline = false, underline = false;
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};
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std::vector<StyleStackEntry> inlineStyleStack;
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CssStyle currentCssStyle;
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bool effectiveBold = false;
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bool effectiveItalic = false;
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bool effectiveUnderline = false;
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void updateEffectiveInlineStyle();
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void startNewTextBlock(const BlockStyle& blockStyle);
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void flushPartWordBuffer();
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void makePages();
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// XML callbacks
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static void XMLCALL startElement(void* userData, const XML_Char* name, const XML_Char** atts);
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static void XMLCALL characterData(void* userData, const XML_Char* s, int len);
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static void XMLCALL endElement(void* userData, const XML_Char* name);
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public:
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explicit ChapterHtmlSlimParser(const std::string& filepath, GfxRenderer& renderer, const int fontId,
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const float lineCompression, const bool extraParagraphSpacing,
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const uint8_t paragraphAlignment, const uint16_t viewportWidth,
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const uint16_t viewportHeight, const bool hyphenationEnabled,
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const std::function<void(std::unique_ptr<Page>)>& completePageFn,
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const std::function<void()>& popupFn = nullptr, const CssParser* cssParser = nullptr)
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: filepath(filepath),
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renderer(renderer),
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fontId(fontId),
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lineCompression(lineCompression),
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extraParagraphSpacing(extraParagraphSpacing),
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paragraphAlignment(paragraphAlignment),
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viewportWidth(viewportWidth),
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viewportHeight(viewportHeight),
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hyphenationEnabled(hyphenationEnabled),
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completePageFn(completePageFn),
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popupFn(popupFn),
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cssParser(cssParser) {}
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~ChapterHtmlSlimParser() = default;
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bool parseAndBuildPages();
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void addLineToPage(std::shared_ptr<TextBlock> line);
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};
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