mirror of
https://github.com/daveallie/crosspoint-reader.git
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aa2467de9e
Adds an inverseDisplay setting that renders white text on a black background in both EPUB and TXT readers. The grayscale anti-aliasing passes swap the LSB gray level condition based on text direction (pixelState/black parameter) so intermediate gray values render correctly against the dark background.
42 lines
1.3 KiB
C++
42 lines
1.3 KiB
C++
#pragma once
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#include <EpdFontFamily.h>
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#include <SdFat.h>
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#include <list>
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#include <memory>
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#include <string>
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#include "Block.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::list<std::string> words;
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std::list<uint16_t> wordXpos;
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std::list<EpdFontFamily::Style> wordStyles;
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Style style;
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public:
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explicit TextBlock(std::list<std::string> words, std::list<uint16_t> word_xpos,
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std::list<EpdFontFamily::Style> word_styles, const Style style)
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: words(std::move(words)), wordXpos(std::move(word_xpos)), wordStyles(std::move(word_styles)), style(style) {}
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~TextBlock() override = default;
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void setStyle(const Style style) { this->style = style; }
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Style getStyle() const { return style; }
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bool isEmpty() override { return words.empty(); }
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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, bool black = true) 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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