LibGfx: Remove unused GlyphBitmap class

Author: https://github.com/awesomekling
Commit: a4a3703fb4
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/42

Userland/Libraries/LibGfx/Font/Font.h

@@ -19,50 +19,9 @@
 
 namespace Gfx {
 
-// FIXME: Make a MutableGlyphBitmap buddy class for FontEditor instead?
-class GlyphBitmap {
-public:
-    GlyphBitmap() = default;
-    GlyphBitmap(Bytes rows, IntSize size)
-        : m_rows(rows)
-        , m_size(size)
-    {
-    }
-
-    unsigned row(unsigned index) const { return ByteReader::load32(bitmap(index).data()); }
-
-    bool bit_at(int x, int y) const { return bitmap(y).get(x); }
-    void set_bit_at(int x, int y, bool b) { bitmap(y).set(x, b); }
-
-    IntSize size() const { return m_size; }
-    int width() const { return m_size.width(); }
-    int height() const { return m_size.height(); }
-
-    static constexpr size_t bytes_per_row() { return sizeof(u32); }
-    static constexpr int max_width() { return bytes_per_row() * 8; }
-    static constexpr int max_height() { return max_width() + bytes_per_row(); }
-
-private:
-    AK::Bitmap bitmap(size_t y) const
-    {
-        return { const_cast<u8*>(m_rows.offset_pointer(bytes_per_row() * y)), bytes_per_row() * 8 };
-    }
-
-    Bytes m_rows;
-    IntSize m_size { 0, 0 };
-};
-
 class Glyph {
 public:
-    Glyph(GlyphBitmap const& glyph_bitmap, float left_bearing, float advance, float ascent)
-        : m_glyph_bitmap(glyph_bitmap)
-        , m_left_bearing(left_bearing)
-        , m_advance(advance)
-        , m_ascent(ascent)
-    {
-    }
-
-    Glyph(RefPtr<Bitmap> bitmap, float left_bearing, float advance, float ascent, bool is_color_bitmap)
+    Glyph(NonnullRefPtr<Bitmap> bitmap, float left_bearing, float advance, float ascent, bool is_color_bitmap)
         : m_bitmap(bitmap)
         , m_left_bearing(left_bearing)
         , m_advance(advance)
@@ -73,16 +32,13 @@ public:
 
     bool is_color_bitmap() const { return m_color_bitmap; }
 
-    bool is_glyph_bitmap() const { return !m_bitmap; }
-    GlyphBitmap glyph_bitmap() const { return m_glyph_bitmap; }
     RefPtr<Bitmap> bitmap() const { return m_bitmap; }
     float left_bearing() const { return m_left_bearing; }
     float advance() const { return m_advance; }
     float ascent() const { return m_ascent; }
 
 private:
-    GlyphBitmap m_glyph_bitmap;
-    RefPtr<Bitmap> m_bitmap;
+    NonnullRefPtr<Bitmap> m_bitmap;
     float m_left_bearing;
     float m_advance;
     float m_ascent;

Userland/Libraries/LibGfx/Font/ScaledFont.cpp

@@ -90,7 +90,7 @@ Gfx::Glyph ScaledFont::glyph(u32 code_point, GlyphSubpixelOffset subpixel_offset
     auto id = glyph_id_for_code_point(code_point);
     auto bitmap = rasterize_glyph(id, subpixel_offset);
     auto metrics = glyph_metrics(id);
-    return Gfx::Glyph(bitmap, metrics.left_side_bearing, metrics.advance_width, metrics.ascender, m_font->has_color_bitmaps());
+    return Gfx::Glyph(*bitmap, metrics.left_side_bearing, metrics.advance_width, metrics.ascender, m_font->has_color_bitmaps());
 }
 
 float ScaledFont::glyph_left_bearing(u32 code_point) const

Userland/Libraries/LibGfx/Forward.h

@@ -19,7 +19,6 @@ class DisjointRectSet;
 
 class Emoji;
 class Font;
-class GlyphBitmap;
 class ImageDecoder;
 struct FontPixelMetrics;
 class ScaledFont;

Userland/Libraries/LibGfx/Painter.cpp

@@ -433,46 +433,6 @@ void Painter::draw_rect(IntRect const& a_rect, Color color, bool rough)
     }
 }
 
-void Painter::draw_bitmap(IntPoint p, GlyphBitmap const& bitmap, Color color)
-{
-    auto dst_rect = IntRect(p, bitmap.size()).translated(translation());
-    auto clipped_rect = dst_rect.intersected(clip_rect());
-    if (clipped_rect.is_empty())
-        return;
-    int const first_row = clipped_rect.top() - dst_rect.top();
-    int const last_row = clipped_rect.bottom() - dst_rect.top();
-    int const first_column = clipped_rect.left() - dst_rect.left();
-    int const last_column = clipped_rect.right() - dst_rect.left();
-
-    int scale = this->scale();
-    ARGB32* dst = m_target->scanline(clipped_rect.y() * scale) + clipped_rect.x() * scale;
-    auto dst_format = target()->format();
-    size_t const dst_skip = m_target->pitch() / sizeof(ARGB32);
-
-    if (scale == 1) {
-        for (int row = first_row; row < last_row; ++row) {
-            for (int j = 0; j < (last_column - first_column); ++j) {
-                if (bitmap.bit_at(j + first_column, row))
-                    dst[j] = color_for_format(dst_format, dst[j]).blend(color).value();
-            }
-            dst += dst_skip;
-        }
-    } else {
-        for (int row = first_row; row < last_row; ++row) {
-            for (int j = 0; j < (last_column - first_column); ++j) {
-                if (bitmap.bit_at((j + first_column), row)) {
-                    for (int iy = 0; iy < scale; ++iy)
-                        for (int ix = 0; ix < scale; ++ix) {
-                            auto pixel_index = j * scale + ix + iy * dst_skip;
-                            dst[pixel_index] = color_for_format(dst_format, dst[pixel_index]).blend(color).value();
-                        }
-                }
-            }
-            dst += dst_skip * scale;
-        }
-    }
-}
-
 struct BlitState {
     enum AlphaState {
         NoAlpha = 0,
@@ -955,9 +915,7 @@ FLATTEN void Painter::draw_glyph(FloatPoint point, u32 code_point, Font const& f
     auto glyph_position = Gfx::GlyphRasterPosition::get_nearest_fit_for(top_left);
     auto glyph = font.glyph(code_point, glyph_position.subpixel_offset);
 
-    if (glyph.is_glyph_bitmap()) {
-        draw_bitmap(top_left.to_type<int>(), glyph.glyph_bitmap(), color);
-    } else if (glyph.is_color_bitmap()) {
+    if (glyph.is_color_bitmap()) {
         float scaled_width = glyph.advance();
         float ratio = static_cast<float>(glyph.bitmap()->height()) / static_cast<float>(glyph.bitmap()->width());
         float scaled_height = scaled_width * ratio;

Userland/Libraries/LibGfx/Painter.h

@@ -73,7 +73,6 @@ public:
     void fill_rect_with_rounded_corners(IntRect const&, Color, int top_left_radius, int top_right_radius, int bottom_right_radius, int bottom_left_radius);
     void fill_ellipse(IntRect const&, Color);
     void draw_rect(IntRect const&, Color, bool rough = false);
-    void draw_bitmap(IntPoint, GlyphBitmap const&, Color = Color());
     void draw_scaled_bitmap(IntRect const& dst_rect, Gfx::Bitmap const&, IntRect const& src_rect, float opacity = 1.0f, ScalingMode = ScalingMode::NearestNeighbor);
     void draw_scaled_bitmap(IntRect const& dst_rect, Gfx::Bitmap const&, FloatRect const& src_rect, float opacity = 1.0f, ScalingMode = ScalingMode::NearestNeighbor);
     void draw_scaled_bitmap_with_transform(IntRect const& dst_rect, Gfx::Bitmap const&, FloatRect const& src_rect, Gfx::AffineTransform const&, float opacity = 1.0f, ScalingMode = ScalingMode::NearestNeighbor);