LibGfx: Move other font-related files to LibGfx/Font/

2025-07-26 04:47:34 +00:00 · 2022-04-09 09:28:38 +02:00 · 2022-04-09 09:28:38 +02:00 · 206d6ece55
commit 206d6ece55
parent 6f8fd91f22
131 changed files with 177 additions and 176 deletions
--- a/Userland/Libraries/LibGfx/Font/BitmapFont.h
+++ b/Userland/Libraries/LibGfx/Font/BitmapFont.h
@ -0,0 +1,162 @@
+/*
+ * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/CharacterTypes.h>
+#include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <AK/String.h>
+#include <AK/Types.h>
+#include <AK/Vector.h>
+#include <LibCore/MappedFile.h>
+#include <LibGfx/Font/Font.h>
+#include <LibGfx/Size.h>
+
+namespace Gfx {
+
+class BitmapFont final : public Font {
+public:
+    NonnullRefPtr<Font> clone() const override;
+    static NonnullRefPtr<BitmapFont> create(u8 glyph_height, u8 glyph_width, bool fixed, size_t glyph_count);
+
+    virtual FontPixelMetrics pixel_metrics() const override;
+
+    NonnullRefPtr<BitmapFont> masked_character_set() const;
+    NonnullRefPtr<BitmapFont> unmasked_character_set() const;
+
+    static RefPtr<BitmapFont> load_from_file(String const& path);
+    bool write_to_file(String const& path);
+
+    ~BitmapFont();
+
+    u8* rows() { return m_rows; }
+    u8* widths() { return m_glyph_widths; }
+
+    u8 presentation_size() const override { return m_presentation_size; }
+    void set_presentation_size(u8 size) { m_presentation_size = size; }
+
+    virtual int pixel_size() const override { return m_glyph_height; }
+    virtual float point_size() const override { return static_cast<float>(m_glyph_height) * 0.75f; }
+
+    u16 weight() const override { return m_weight; }
+    void set_weight(u16 weight) { m_weight = weight; }
+
+    virtual u8 slope() const override { return m_slope; }
+    void set_slope(u8 slope) { m_slope = slope; }
+
+    Glyph glyph(u32 code_point) const override;
+    Glyph raw_glyph(u32 code_point) const;
+    bool contains_glyph(u32 code_point) const override;
+    bool contains_raw_glyph(u32 code_point) const { return m_glyph_widths[code_point] > 0; }
+
+    ALWAYS_INLINE int glyph_or_emoji_width(u32 code_point) const override
+    {
+        if (m_fixed_width)
+            return m_glyph_width;
+        return glyph_or_emoji_width_for_variable_width_font(code_point);
+    }
+    float glyphs_horizontal_kerning(u32, u32) const override { return 0.f; }
+    u8 glyph_height() const override { return m_glyph_height; }
+    int x_height() const override { return m_x_height; }
+    int preferred_line_height() const override { return glyph_height() + m_line_gap; }
+
+    u8 glyph_width(u32 code_point) const override;
+    u8 raw_glyph_width(u32 code_point) const { return m_glyph_widths[code_point]; }
+
+    u8 min_glyph_width() const override { return m_min_glyph_width; }
+    u8 max_glyph_width() const override { return m_max_glyph_width; }
+    u8 glyph_fixed_width() const override { return m_glyph_width; }
+
+    u8 baseline() const override { return m_baseline; }
+    void set_baseline(u8 baseline)
+    {
+        m_baseline = baseline;
+        update_x_height();
+    }
+
+    u8 mean_line() const override { return m_mean_line; }
+    void set_mean_line(u8 mean_line)
+    {
+        m_mean_line = mean_line;
+        update_x_height();
+    }
+
+    int width(StringView) const override;
+    int width(Utf8View const&) const override;
+    int width(Utf32View const&) const override;
+
+    String name() const override { return m_name; }
+    void set_name(String name) { m_name = move(name); }
+
+    bool is_fixed_width() const override { return m_fixed_width; }
+    void set_fixed_width(bool b) { m_fixed_width = b; }
+
+    u8 glyph_spacing() const override { return m_glyph_spacing; }
+    void set_glyph_spacing(u8 spacing) { m_glyph_spacing = spacing; }
+
+    void set_glyph_width(u32 code_point, u8 width)
+    {
+        VERIFY(m_glyph_widths);
+        m_glyph_widths[code_point] = width;
+    }
+
+    size_t glyph_count() const override { return m_glyph_count; }
+    Optional<size_t> glyph_index(u32 code_point) const;
+
+    u16 range_size() const { return m_range_mask_size; }
+    bool is_range_empty(u32 code_point) const { return !(m_range_mask[code_point / 256 / 8] & 1 << (code_point / 256 % 8)); }
+
+    String family() const override { return m_family; }
+    void set_family(String family) { m_family = move(family); }
+    String variant() const override;
+
+    String qualified_name() const override;
+    String human_readable_name() const override { return String::formatted("{} {} {}", family(), variant(), presentation_size()); }
+
+private:
+    BitmapFont(String name, String family, u8* rows, u8* widths, bool is_fixed_width,
+        u8 glyph_width, u8 glyph_height, u8 glyph_spacing, u16 range_mask_size, u8* range_mask,
+        u8 baseline, u8 mean_line, u8 presentation_size, u16 weight, u8 slope, bool owns_arrays = false);
+
+    static RefPtr<BitmapFont> load_from_memory(u8 const*);
+
+    template<typename T>
+    int unicode_view_width(T const& view) const;
+
+    void update_x_height() { m_x_height = m_baseline - m_mean_line; };
+    int glyph_or_emoji_width_for_variable_width_font(u32 code_point) const;
+
+    String m_name;
+    String m_family;
+    size_t m_glyph_count { 0 };
+
+    u16 m_range_mask_size { 0 };
+    u8* m_range_mask { nullptr };
+    Vector<Optional<size_t>> m_range_indices;
+
+    u8* m_rows { nullptr };
+    u8* m_glyph_widths { nullptr };
+    RefPtr<Core::MappedFile> m_mapped_file;
+
+    u8 m_glyph_width { 0 };
+    u8 m_glyph_height { 0 };
+    u8 m_x_height { 0 };
+    u8 m_min_glyph_width { 0 };
+    u8 m_max_glyph_width { 0 };
+    u8 m_glyph_spacing { 0 };
+    u8 m_baseline { 0 };
+    u8 m_mean_line { 0 };
+    u8 m_presentation_size { 0 };
+    u16 m_weight { 0 };
+    u8 m_slope { 0 };
+    u8 m_line_gap { 4 };
+
+    bool m_fixed_width { false };
+    bool m_owns_arrays { false };
+};
+
+}