LcdFont.h

Go to the documentation of this file.

/****
 * glcdfont.cpp
 *
 * This is the 'classic' fixed-space bitmap font for Adafruit_GFX since 1.0.
 *
 * See https://github.com/adafruit/Adafruit-GFX-Library
 *
 ****/

#pragma once

#include "Object.h"

namespace Graphics
{
class LcdGlyph : public GlyphObject
{
public:
    static constexpr Size rawSize{5, 8};
    static constexpr Metrics metrics{
        .width = rawSize.w + 1,
        .height = rawSize.h,
        .xOffset = 0,
        .yOffset = rawSize.h,
        .advance = rawSize.w + 1,
    };

    LcdGlyph(size_t bmOffset, const Options& options);

    bool init() override
    {
        return true;
    }

    Bits getBits(uint16_t row) const override
    {
        return rowBits[row].to_ulong();
    }

    void readAlpha(void* buffer, Point origin, size_t stride) const override;

private:
    PackedColor clFore;
    PackedColor clBack;
    uint8_t scale;
    std::bitset<rawSize.w> rowBits[rawSize.h];
};

class LcdTypeFace : public TypeFace
{
public:
    FontStyles getStyle() const override
    {
        return 0;
    }

    uint8_t height() const override
    {
        return LcdGlyph::rawSize.h;
    }

    uint8_t descent() const override
    {
        return 1;
    }

    GlyphObject::Metrics getMetrics(char ch) const override
    {
        (void)ch;
        return LcdGlyph::metrics;
    }

    GlyphObject* getGlyph(char ch, const GlyphObject::Options& options) const override;
};

class LcdFont : public Font
{
public:
    String name() const override
    {
        return F("glcdfont");
    }

    uint16_t height() const override
    {
        return LcdGlyph::rawSize.h;
    }

    const TypeFace* getFace(FontStyles style) const
    {
        (void)style;
        return &typeface;
    }

private:
    LcdTypeFace typeface;
};

extern LcdFont lcdFont;

} // namespace Graphics