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LibPDF: Pass Renderer to PDFFont::draw_string()

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It's a bit unfortunate that fonts need to know about the renderer,
but type 3 fonts contain PDF drawing operators, so it's necessary.

On the bright side, it makes it possible to pass fewer parameters
around and compute things locally as needed.

(As we implement more fonts, we'll probably want to create some
functions to do these computations in a central place, eventually.)

No behavior change.
This commit is contained in:
Nico Weber 2023-11-14 10:11:39 -05:00 • committed by Sam Atkins
parent e0c0864ddf
commit bcc6439b5f
7 changed files with 32 additions and 21 deletions
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11
Userland/Libraries/LibPDF/Renderer.h
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@ -107,6 +107,10 @@ public:
bool operator==(FontCacheKey const&) const = default;
};
ALWAYS_INLINE GraphicsState const& state() const { return m_graphics_state_stack.last(); }
ALWAYS_INLINE TextState const& text_state() const { return state().text_state; }
Gfx::AffineTransform const& calculate_text_rendering_matrix() const;
private:
Renderer(RefPtr<Document>, Page const&, RefPtr<Gfx::Bitmap>, RenderingPreferences);
@ -130,9 +134,7 @@ private:
PDFErrorOr<NonnullRefPtr<ColorSpace>> get_color_space_from_resources(Value const&, NonnullRefPtr<DictObject>);
PDFErrorOr<NonnullRefPtr<ColorSpace>> get_color_space_from_document(NonnullRefPtr<Object>);
ALWAYS_INLINE GraphicsState const& state() const { return m_graphics_state_stack.last(); }
ALWAYS_INLINE GraphicsState& state() { return m_graphics_state_stack.last(); }
ALWAYS_INLINE TextState const& text_state() const { return state().text_state; }
ALWAYS_INLINE TextState& text_state() { return state().text_state; }
template<typename T>
@ -144,7 +146,6 @@ private:
template<typename T>
ALWAYS_INLINE Gfx::Rect<T> map(Gfx::Rect<T>) const;
Gfx::AffineTransform const& calculate_text_rendering_matrix();
Gfx::AffineTransform calculate_image_space_transformation(int width, int height);
PDFErrorOr<NonnullRefPtr<PDFFont>> get_font(FontCacheKey const&);
@ -161,8 +162,8 @@ private:
Gfx::AffineTransform m_text_matrix;
Gfx::AffineTransform m_text_line_matrix;
bool m_text_rendering_matrix_is_dirty { true };
Gfx::AffineTransform m_text_rendering_matrix;
bool mutable m_text_rendering_matrix_is_dirty { true };
Gfx::AffineTransform mutable m_text_rendering_matrix;
HashMap<FontCacheKey, NonnullRefPtr<PDFFont>> m_font_cache;
};