6ceba56620
Reduces heap fragmentation by ~12x fewer allocations per TextBlock. This fixes crashes when repeatedly navigating dictionary pages. - Replace std::list with std::vector in TextBlock members - Replace splice() with move+erase in ParsedText::extractLine() - Use index-based access in hyphenateWordAtIndex()
64 lines
2.3 KiB
C++
64 lines
2.3 KiB
C++
#pragma once
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#include <EpdFontFamily.h>
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#include <SdFat.h>
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#include <vector>
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#include <memory>
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#include <string>
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#include "Block.h"
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#include "BlockStyle.h"
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// Represents a line of text on a page
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class TextBlock final : public Block {
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public:
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enum Style : uint8_t {
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JUSTIFIED = 0,
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LEFT_ALIGN = 1,
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CENTER_ALIGN = 2,
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RIGHT_ALIGN = 3,
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};
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private:
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std::vector<std::string> words;
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std::vector<uint16_t> wordXpos;
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std::vector<EpdFontFamily::Style> wordStyles;
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std::vector<bool> wordUnderlines; // Track underline per word
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Style style;
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BlockStyle blockStyle;
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public:
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explicit TextBlock(std::vector<std::string> words, std::vector<uint16_t> word_xpos,
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std::vector<EpdFontFamily::Style> word_styles, const Style style,
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const BlockStyle& blockStyle = BlockStyle(), std::vector<bool> word_underlines = std::vector<bool>())
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: words(std::move(words)),
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wordXpos(std::move(word_xpos)),
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wordStyles(std::move(word_styles)),
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wordUnderlines(std::move(word_underlines)),
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style(style),
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blockStyle(blockStyle) {
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// Ensure underlines list matches words list size
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while (this->wordUnderlines.size() < this->words.size()) {
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this->wordUnderlines.push_back(false);
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}
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}
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~TextBlock() override = default;
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void setStyle(const Style style) { this->style = style; }
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void setBlockStyle(const BlockStyle& blockStyle) { this->blockStyle = blockStyle; }
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Style getStyle() const { return style; }
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const BlockStyle& getBlockStyle() const { return blockStyle; }
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bool isEmpty() override { return words.empty(); }
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// Getters for word selection support
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const std::vector<std::string>& getWords() const { return words; }
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const std::vector<uint16_t>& getWordXPositions() const { return wordXpos; }
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const std::vector<EpdFontFamily::Style>& getWordStyles() const { return wordStyles; }
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size_t getWordCount() const { return words.size(); }
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void layout(GfxRenderer& renderer) override {};
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// given a renderer works out where to break the words into lines
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void render(const GfxRenderer& renderer, int fontId, int x, int y) const;
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BlockType getType() override { return TEXT_BLOCK; }
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bool serialize(FsFile& file) const;
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static std::unique_ptr<TextBlock> deserialize(FsFile& file);
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};
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