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LibPDF: Honor writing mode in TJ operator as well

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This commit is contained in:
Nico Weber 2024-03-01 11:13:58 -05:00 committed by Andreas Kling
parent c69797fda9
commit 9e502dcfe4
3 changed files with 12 additions and 6 deletions
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7
Userland/Libraries/LibPDF/Fonts/PDFFont.h
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@ -20,6 +20,11 @@ class Renderer;
// these tables in some cases. Skip reading these tables.
constexpr u32 pdf_skipped_opentype_tables = OpenType::FontOptions::SkipTables::Name | OpenType::FontOptions::SkipTables::Hmtx | OpenType::FontOptions::SkipTables::OS2;
enum class WritingMode {
Horizontal,
Vertical,
};
class PDFFont : public RefCounted<PDFFont> {
public:
static PDFErrorOr<NonnullRefPtr<PDFFont>> create(Document*, NonnullRefPtr<DictObject> const&, float font_size);
@ -29,6 +34,8 @@ public:
virtual void set_font_size(float font_size) = 0;
virtual PDFErrorOr<Gfx::FloatPoint> draw_string(Gfx::Painter&, Gfx::FloatPoint, ByteString const&, Renderer const&) = 0;
virtual WritingMode writing_mode() const { return WritingMode::Horizontal; }
// TABLE 5.20 Font flags
bool is_fixed_pitch() const { return m_flags & (1 << (1 - 1)); }
bool is_serif() const { return m_flags & (1 << (2 - 1)); }

6
Userland/Libraries/LibPDF/Fonts/Type0Font.h
View file

@ -27,11 +27,6 @@ public:
virtual u32 next() = 0;
};
enum class WritingMode {
Horizontal,
Vertical,
};
class Type0CMap {
public:
virtual ~Type0CMap() = default;
@ -58,6 +53,7 @@ public:
void set_font_size(float font_size) override;
PDFErrorOr<Gfx::FloatPoint> draw_string(Gfx::Painter&, Gfx::FloatPoint, ByteString const&, Renderer const&) override;
WritingMode writing_mode() const override { return m_cmap->writing_mode(); }
DeprecatedFlyString base_font_name() const { return m_base_font_name; }

5
Userland/Libraries/LibPDF/Renderer.cpp
View file

@ -598,7 +598,10 @@ RENDERER_HANDLER(text_show_string_array)
for (auto& element : elements) {
if (element.has_number()) {
float shift = element.to_float() / 1000.0f;
m_text_matrix.translate(-shift * text_state().font_size * text_state().horizontal_scaling, 0.0f);
if (text_state().font->writing_mode() == WritingMode::Horizontal)
m_text_matrix.translate(-shift * text_state().font_size * text_state().horizontal_scaling, 0.0f);
else
m_text_matrix.translate(0.0f, -shift * text_state().font_size);
m_text_rendering_matrix_is_dirty = true;
} else {
auto str = element.get<NonnullRefPtr<Object>>()->cast<StringObject>()->string();