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LibPDF: Handle the gs graphical operator

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This commit is contained in:
Matthew Olsson 2021-05-27 14:22:24 -07:00 • committed by Ali Mohammad Pur
parent 006f5498de
commit 47531619e3
3 changed files with 60 additions and 3 deletions
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31
Userland/Libraries/LibPDF/Renderer.cpp
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@ -146,7 +146,15 @@ RENDERER_HANDLER(set_dash_pattern)
RENDERER_TODO(set_color_rendering_intent);
RENDERER_TODO(set_flatness_tolerance);
RENDERER_TODO(set_graphics_state_from_dict);
RENDERER_HANDLER(set_graphics_state_from_dict)
{
VERIFY(m_page.resources->contains(CommonNames::ExtGState));
auto dict_name = m_document->resolve_to<NameObject>(args[0])->name();
auto ext_gstate_dict = m_page.resources->get_dict(m_document, CommonNames::ExtGState);
auto target_dict = ext_gstate_dict->get_dict(m_document, dict_name);
set_graphics_state_from_dict(target_dict);
}
RENDERER_HANDLER(path_move)
{
@ -475,6 +483,27 @@ Gfx::Rect<T> Renderer::map(Gfx::Rect<T> rect) const
return state().ctm.map(rect);
}
void Renderer::set_graphics_state_from_dict(NonnullRefPtr<DictObject> dict)
{
if (dict->contains(CommonNames::LW))
handle_set_line_width({ dict->get_value(CommonNames::LW) });
if (dict->contains(CommonNames::LC))
handle_set_line_cap({ dict->get_value(CommonNames::LC) });
if (dict->contains(CommonNames::LJ))
handle_set_line_join({ dict->get_value(CommonNames::LJ) });
if (dict->contains(CommonNames::ML))
handle_set_miter_limit({ dict->get_value(CommonNames::ML) });
if (dict->contains(CommonNames::D))
handle_set_dash_pattern(dict->get_array(m_document, CommonNames::D)->elements());
if (dict->contains(CommonNames::FL))
handle_set_flatness_tolerance({ dict->get_value(CommonNames::FL) });
}
void Renderer::show_text(const String& string, int shift)
{
auto utf = Utf8View(string);