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LibPDF: Move color space creation from Renderer to ColorSpace

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This commit is contained in:
Matthew Olsson 2022-03-24 10:08:08 -07:00 • committed by Andreas Kling
parent 8e175b4959
commit 1238e65d30
3 changed files with 52 additions and 41 deletions
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36
Userland/Libraries/LibPDF/ColorSpace.cpp
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@ -6,10 +6,44 @@
#include <LibPDF/ColorSpace.h>
#include <LibPDF/CommonNames.h>
#include <LibPDF/Document.h>
#include <LibPDF/ObjectDerivatives.h>
namespace PDF {
PDFErrorOr<NonnullRefPtr<ColorSpace>> ColorSpace::create(Document* document, FlyString const& name, Page const& page)
{
// Simple color spaces with no parameters, which can be specified directly
if (name == CommonNames::DeviceGray)
return DeviceGrayColorSpace::the();
if (name == CommonNames::DeviceRGB)
return DeviceRGBColorSpace::the();
if (name == CommonNames::DeviceCMYK)
return DeviceCMYKColorSpace::the();
if (name == CommonNames::Pattern)
TODO();
// The color space is a complex color space with parameters that resides in
// the resource dictionary
auto color_space_resource_dict = TRY(page.resources->get_dict(document, CommonNames::ColorSpace));
if (!color_space_resource_dict->contains(name))
TODO();
auto color_space_array = TRY(color_space_resource_dict->get_array(document, name));
auto color_space_name = TRY(color_space_array->get_name_at(document, 0))->name();
Vector<Value> parameters;
parameters.ensure_capacity(color_space_array->size() - 1);
for (size_t i = 1; i < color_space_array->size(); i++)
parameters.unchecked_append(color_space_array->at(i));
if (color_space_name == CommonNames::CalRGB)
return TRY(CalRGBColorSpace::create(document, move(parameters)));
dbgln("Unknown color space: {}", color_space_name);
TODO();
}
NonnullRefPtr<DeviceGrayColorSpace> DeviceGrayColorSpace::the()
{
static auto instance = adopt_ref(*new DeviceGrayColorSpace());
@ -54,7 +88,7 @@ Color DeviceCMYKColorSpace::color(Vector<Value> const& arguments) const
return Color::from_cmyk(c, m, y, k);
}
PDFErrorOr<NonnullRefPtr<CalRGBColorSpace>> CalRGBColorSpace::create(RefPtr<Document> document, Vector<Value>&& parameters)
PDFErrorOr<NonnullRefPtr<CalRGBColorSpace>> CalRGBColorSpace::create(Document* document, Vector<Value>&& parameters)
{
if (parameters.size() != 1)
return Error { Error::Type::MalformedPDF, "RGB color space expects one parameter" };