mgl_ascii_font.h

[詳解]

// SPDX-License-Identifier: Zlib
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
 
#ifndef INCGUARD_MGL_ASCII_FONT_H_1622021769
#define INCGUARD_MGL_ASCII_FONT_H_1622021769
 
#include <mgl/file/mgl_file_path_view.h>
#include <mgl/render/font/mgl_indexed_font_resource.h>
#include <mgl/render/mgl_renderer_2d.h>
 
namespace MGL::Render
{
class AsciiFont : public IndexedFontResource
{
public:
    AsciiFont(TextureKey textureKey, uint32_t characterWidth, uint32_t characterHeight, const Vector2 &sourceOffset = MGL::Vector2()) noexcept;
    AsciiFont(const TextureWithBounds &textureBounds) noexcept;
    AsciiFont(
        const File::PathView &imagePath,
        uint32_t characterWidth,
        uint32_t characterHeight,
        const Vector2 &sourceOffset = MGL::Vector2(),
        TextureLoaderKey loaderKey = TextureStorage::kDefaultLoaderKey) noexcept;
    AsciiFont(
        const void *imageData,
        size_t dataSize,
        uint32_t characterWidth,
        uint32_t characterHeight,
        const Vector2 &sourceOffset = MGL::Vector2(),
        TextureLoaderKey loaderKey = TextureStorage::kDefaultLoaderKey) noexcept;
 
    void Initialize() noexcept;
 
    [[nodiscard]] size_t GetIndex(char32_t character, FontFaceType faceType) const noexcept override;
    [[nodiscard]] const FontGlyph *GetGlyph(size_t index, FontFaceType faceType, const FontOption &option) const noexcept override;
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] bool HasFontFace(FontFaceType faceType) const noexcept override
    {
        return (faceType == FontFaceType::Default);
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] bool IsValid() const noexcept override
    {
        return _texture.IsValid();
    }
 
    /* ------------------------------------------------------------------------- */
    /* ------------------------------------------------------------------------- */
    [[nodiscard]] float GetLineAdvance() const noexcept override
    {
        return _characterSize.y;
    }
 
private:
    Texture _texture;
    Vector2 _characterSize;
    Vector2 _sourceOffset;
    STL::unique_ptr<FontGlyph[]> _glyphs;
};
}    // namespace MGL::Render
 
#endif    // INCGUARD_MGL_ASCII_FONT_H_1622021769
 
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