mirror of
https://github.com/daveallie/crosspoint-reader.git
synced 2025-12-18 23:27:44 +03:00
2ed8017aa2
* First pass at moving to SDK EInkDisplay library * Add 2-bit grayscale text and anti-aliased rendering of text * Render status bar for empty chapters * Refresh screen every 15 pages to avoid ghosting * Simplify boot and sleep screens * Give FileSelectionScreen task more stack memory * Move text around slightly on Boot and Sleep screens * Re-use existing buffer and write to whole screen for 'partial update'
36 lines
1.5 KiB
C++
36 lines
1.5 KiB
C++
// From
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// https://github.com/vroland/epdiy/blob/c61e9e923ce2418150d54f88cea5d196cdc40c54/src/epd_internals.h
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#pragma once
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#include <cstdint>
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/// Font data stored PER GLYPH
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typedef struct {
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uint8_t width; ///< Bitmap dimensions in pixels
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uint8_t height; ///< Bitmap dimensions in pixels
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uint8_t advanceX; ///< Distance to advance cursor (x axis)
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int16_t left; ///< X dist from cursor pos to UL corner
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int16_t top; ///< Y dist from cursor pos to UL corner
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uint16_t dataLength; ///< Size of the font data.
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uint32_t dataOffset; ///< Pointer into EpdFont->bitmap
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} EpdGlyph;
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/// Glyph interval structure
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typedef struct {
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uint32_t first; ///< The first unicode code point of the interval
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uint32_t last; ///< The last unicode code point of the interval
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uint32_t offset; ///< Index of the first code point into the glyph array
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} EpdUnicodeInterval;
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/// Data stored for FONT AS A WHOLE
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typedef struct {
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const uint8_t* bitmap; ///< Glyph bitmaps, concatenated
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const EpdGlyph* glyph; ///< Glyph array
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const EpdUnicodeInterval* intervals; ///< Valid unicode intervals for this font
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uint32_t intervalCount; ///< Number of unicode intervals.
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uint8_t advanceY; ///< Newline distance (y axis)
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int ascender; ///< Maximal height of a glyph above the base line
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int descender; ///< Maximal height of a glyph below the base line
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bool is2Bit;
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} EpdFontData;
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