mirror of
https://github.com/RGBCube/serenity
synced 2025-05-16 06:54:59 +00:00
77 lines
3 KiB
C++
77 lines
3 KiB
C++
/*
|
|
* Copyright (c) 2023, Rodrigo Tobar <rtobarc@gmail.com>.
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibGfx/Forward.h>
|
|
#include <LibPDF/CommonNames.h>
|
|
#include <LibPDF/Error.h>
|
|
#include <LibPDF/Fonts/PDFFont.h>
|
|
#include <LibPDF/Fonts/SimpleFont.h>
|
|
#include <LibPDF/Fonts/TrueTypeFont.h>
|
|
#include <LibPDF/Fonts/Type1Font.h>
|
|
|
|
namespace PDF {
|
|
|
|
PDFErrorOr<void> SimpleFont::initialize(Document* document, NonnullRefPtr<DictObject> const& dict, float font_size)
|
|
{
|
|
TRY(PDFFont::initialize(document, dict, font_size));
|
|
if (dict->contains(CommonNames::Encoding)) {
|
|
auto encoding_object = MUST(dict->get_object(document, CommonNames::Encoding));
|
|
m_encoding = TRY(Encoding::from_object(document, encoding_object));
|
|
}
|
|
|
|
if (dict->contains(CommonNames::ToUnicode))
|
|
m_to_unicode = TRY(dict->get_stream(document, CommonNames::ToUnicode));
|
|
|
|
if (dict->contains(CommonNames::FirstChar) && dict->contains(CommonNames::LastChar) && dict->contains(CommonNames::Widths)) {
|
|
auto first_char = dict->get_value(CommonNames::FirstChar).get<int>();
|
|
auto last_char = dict->get_value(CommonNames::LastChar).get<int>();
|
|
auto widths_array = TRY(dict->get_array(document, CommonNames::Widths));
|
|
|
|
VERIFY(widths_array->size() == static_cast<size_t>(last_char - first_char + 1));
|
|
|
|
for (size_t i = 0; i < widths_array->size(); i++)
|
|
m_widths.set(first_char + i, widths_array->at(i).to_int());
|
|
}
|
|
|
|
if (dict->contains(CommonNames::FontDescriptor)) {
|
|
auto descriptor = TRY(dict->get_dict(document, CommonNames::FontDescriptor));
|
|
if (descriptor->contains(CommonNames::MissingWidth))
|
|
m_missing_width = descriptor->get_value(CommonNames::MissingWidth).to_int();
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
PDFErrorOr<Gfx::FloatPoint> SimpleFont::draw_string(Gfx::Painter& painter, Gfx::FloatPoint glyph_position, DeprecatedString const& string, Color const& paint_color, float font_size, float character_spacing, float word_spacing, float horizontal_scaling)
|
|
{
|
|
for (auto char_code : string.bytes()) {
|
|
// Use the width specified in the font's dictionary if available,
|
|
// and use the default width for the given font otherwise.
|
|
float glyph_width;
|
|
if (auto width = m_widths.get(char_code); width.has_value())
|
|
glyph_width = font_size * width.value() / 1000.0f;
|
|
else
|
|
glyph_width = get_glyph_width(char_code);
|
|
|
|
draw_glyph(painter, glyph_position, glyph_width, char_code, paint_color);
|
|
|
|
auto tx = glyph_width;
|
|
tx += character_spacing;
|
|
|
|
// ISO 32000 (PDF 2.0), 9.3.3 Wordspacing
|
|
// "Word spacing shall be applied to every occurrence of the single-byte character code 32
|
|
// in a string when using a simple font (including Type 3) or a composite font that defines
|
|
// code 32 as a single-byte code."
|
|
if (char_code == ' ')
|
|
tx += word_spacing;
|
|
|
|
tx *= horizontal_scaling;
|
|
glyph_position += { tx, 0.0f };
|
|
}
|
|
return glyph_position;
|
|
}
|
|
|
|
}
|