mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 09:18:05 +03:00
b3007c17bd
Operators usually assume that the resources its operations will require will be the Page's. This assumption breaks however when XObjects with their own resources come into the picture (and maybe other cases too). In that case, the XObject's resources take precedence, but they should also contain the Page's resources. Because of this, one can safely use the XObject resources alone when given, and default to the Page's if not. This commit adds all operator calls an extra argument with optional resources, which will be fed by XObjects as necessary.
265 lines
8.8 KiB
C++
265 lines
8.8 KiB
C++
/*
|
|
* Copyright (c) 2021-2022, Matthew Olsson <mattco@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Format.h>
|
|
#include <LibGfx/AffineTransform.h>
|
|
#include <LibGfx/AntiAliasingPainter.h>
|
|
#include <LibGfx/Bitmap.h>
|
|
#include <LibGfx/Font/Font.h>
|
|
#include <LibGfx/Font/FontDatabase.h>
|
|
#include <LibGfx/Painter.h>
|
|
#include <LibGfx/Path.h>
|
|
#include <LibGfx/Point.h>
|
|
#include <LibGfx/Rect.h>
|
|
#include <LibGfx/Size.h>
|
|
#include <LibPDF/ColorSpace.h>
|
|
#include <LibPDF/Document.h>
|
|
#include <LibPDF/Fonts/PDFFont.h>
|
|
#include <LibPDF/Object.h>
|
|
|
|
namespace PDF {
|
|
|
|
enum class LineCapStyle : u8 {
|
|
ButtCap = 0,
|
|
RoundCap = 1,
|
|
SquareCap = 2,
|
|
};
|
|
|
|
enum class LineJoinStyle : u8 {
|
|
Miter = 0,
|
|
Round = 1,
|
|
Bevel = 2,
|
|
};
|
|
|
|
struct LineDashPattern {
|
|
Vector<int> pattern;
|
|
int phase;
|
|
};
|
|
|
|
enum class TextRenderingMode : u8 {
|
|
Fill = 0,
|
|
Stroke = 1,
|
|
FillThenStroke = 2,
|
|
Invisible = 3,
|
|
FillAndClip = 4,
|
|
StrokeAndClip = 5,
|
|
FillStrokeAndClip = 6,
|
|
Clip = 7,
|
|
};
|
|
|
|
struct TextState {
|
|
float character_spacing { 0.0f };
|
|
float word_spacing { 0.0f };
|
|
float horizontal_scaling { 1.0f };
|
|
float leading { 0.0f };
|
|
float font_size { 12.0f };
|
|
RefPtr<PDFFont> font;
|
|
TextRenderingMode rendering_mode { TextRenderingMode::Fill };
|
|
float rise { 0.0f };
|
|
bool knockout { true };
|
|
};
|
|
|
|
struct ClippingPaths {
|
|
Gfx::Path current;
|
|
Gfx::Path next;
|
|
};
|
|
|
|
struct GraphicsState {
|
|
Gfx::AffineTransform ctm;
|
|
ClippingPaths clipping_paths;
|
|
RefPtr<ColorSpace> stroke_color_space { DeviceGrayColorSpace::the() };
|
|
RefPtr<ColorSpace> paint_color_space { DeviceGrayColorSpace::the() };
|
|
Gfx::Color stroke_color { Gfx::Color::NamedColor::Black };
|
|
Gfx::Color paint_color { Gfx::Color::NamedColor::Black };
|
|
float line_width { 1.0f };
|
|
LineCapStyle line_cap_style { LineCapStyle::ButtCap };
|
|
LineJoinStyle line_join_style { LineJoinStyle::Miter };
|
|
float miter_limit { 10.0f };
|
|
LineDashPattern line_dash_pattern { {}, 0 };
|
|
TextState text_state {};
|
|
};
|
|
|
|
struct RenderingPreferences {
|
|
bool show_clipping_paths { false };
|
|
};
|
|
|
|
class Renderer {
|
|
public:
|
|
static PDFErrorOr<void> render(Document&, Page const&, RefPtr<Gfx::Bitmap>, RenderingPreferences preferences);
|
|
|
|
private:
|
|
Renderer(RefPtr<Document>, Page const&, RefPtr<Gfx::Bitmap>, RenderingPreferences);
|
|
|
|
PDFErrorOr<void> render();
|
|
|
|
PDFErrorOr<void> handle_operator(Operator const&, Optional<NonnullRefPtr<DictObject>> = {});
|
|
#define V(name, snake_name, symbol) \
|
|
PDFErrorOr<void> handle_##snake_name(Vector<Value> const& args, Optional<NonnullRefPtr<DictObject>> = {});
|
|
ENUMERATE_OPERATORS(V)
|
|
#undef V
|
|
PDFErrorOr<void> handle_text_next_line_show_string(Vector<Value> const& args, Optional<NonnullRefPtr<DictObject>> = {});
|
|
PDFErrorOr<void> handle_text_next_line_show_string_set_spacing(Vector<Value> const& args, Optional<NonnullRefPtr<DictObject>> = {});
|
|
|
|
void begin_path_paint();
|
|
void end_path_paint();
|
|
PDFErrorOr<void> set_graphics_state_from_dict(NonnullRefPtr<DictObject>);
|
|
void show_text(String const&);
|
|
PDFErrorOr<NonnullRefPtr<ColorSpace>> get_color_space(Value const&, NonnullRefPtr<DictObject>);
|
|
|
|
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>
|
|
ALWAYS_INLINE Gfx::Point<T> map(T x, T y) const;
|
|
|
|
template<typename T>
|
|
ALWAYS_INLINE Gfx::Size<T> map(Gfx::Size<T>) const;
|
|
|
|
template<typename T>
|
|
ALWAYS_INLINE Gfx::Rect<T> map(Gfx::Rect<T>) const;
|
|
|
|
Gfx::AffineTransform const& calculate_text_rendering_matrix();
|
|
|
|
RefPtr<Document> m_document;
|
|
RefPtr<Gfx::Bitmap> m_bitmap;
|
|
Page const& m_page;
|
|
Gfx::Painter m_painter;
|
|
Gfx::AntiAliasingPainter m_anti_aliasing_painter;
|
|
RenderingPreferences m_rendering_preferences;
|
|
|
|
Gfx::Path m_current_path;
|
|
Vector<GraphicsState> m_graphics_state_stack;
|
|
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;
|
|
};
|
|
|
|
}
|
|
|
|
namespace AK {
|
|
|
|
template<>
|
|
struct Formatter<PDF::LineCapStyle> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& builder, PDF::LineCapStyle const& style)
|
|
{
|
|
switch (style) {
|
|
case PDF::LineCapStyle::ButtCap:
|
|
return builder.put_string("LineCapStyle::ButtCap"sv);
|
|
case PDF::LineCapStyle::RoundCap:
|
|
return builder.put_string("LineCapStyle::RoundCap"sv);
|
|
case PDF::LineCapStyle::SquareCap:
|
|
return builder.put_string("LineCapStyle::SquareCap"sv);
|
|
}
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct Formatter<PDF::LineJoinStyle> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& builder, PDF::LineJoinStyle const& style)
|
|
{
|
|
switch (style) {
|
|
case PDF::LineJoinStyle::Miter:
|
|
return builder.put_string("LineJoinStyle::Miter"sv);
|
|
case PDF::LineJoinStyle::Round:
|
|
return builder.put_string("LineJoinStyle::Round"sv);
|
|
case PDF::LineJoinStyle::Bevel:
|
|
return builder.put_string("LineJoinStyle::Bevel"sv);
|
|
}
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct Formatter<PDF::LineDashPattern> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& format_builder, PDF::LineDashPattern const& pattern)
|
|
{
|
|
StringBuilder builder;
|
|
builder.append('[');
|
|
bool first = true;
|
|
|
|
for (auto& i : pattern.pattern) {
|
|
if (!first)
|
|
builder.append(", "sv);
|
|
first = false;
|
|
builder.appendff("{}", i);
|
|
}
|
|
|
|
builder.appendff("] {}", pattern.phase);
|
|
return format_builder.put_string(builder.to_string());
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct Formatter<PDF::TextRenderingMode> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& builder, PDF::TextRenderingMode const& style)
|
|
{
|
|
switch (style) {
|
|
case PDF::TextRenderingMode::Fill:
|
|
return builder.put_string("TextRenderingMode::Fill"sv);
|
|
case PDF::TextRenderingMode::Stroke:
|
|
return builder.put_string("TextRenderingMode::Stroke"sv);
|
|
case PDF::TextRenderingMode::FillThenStroke:
|
|
return builder.put_string("TextRenderingMode::FillThenStroke"sv);
|
|
case PDF::TextRenderingMode::Invisible:
|
|
return builder.put_string("TextRenderingMode::Invisible"sv);
|
|
case PDF::TextRenderingMode::FillAndClip:
|
|
return builder.put_string("TextRenderingMode::FillAndClip"sv);
|
|
case PDF::TextRenderingMode::StrokeAndClip:
|
|
return builder.put_string("TextRenderingMode::StrokeAndClip"sv);
|
|
case PDF::TextRenderingMode::FillStrokeAndClip:
|
|
return builder.put_string("TextRenderingMode::FillStrokeAndClip"sv);
|
|
case PDF::TextRenderingMode::Clip:
|
|
return builder.put_string("TextRenderingMode::Clip"sv);
|
|
}
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct Formatter<PDF::TextState> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& format_builder, PDF::TextState const& state)
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("TextState {\n"sv);
|
|
builder.appendff(" character_spacing={}\n", state.character_spacing);
|
|
builder.appendff(" word_spacing={}\n", state.word_spacing);
|
|
builder.appendff(" horizontal_scaling={}\n", state.horizontal_scaling);
|
|
builder.appendff(" leading={}\n", state.leading);
|
|
builder.appendff(" font_size={}\n", state.font_size);
|
|
builder.appendff(" rendering_mode={}\n", state.rendering_mode);
|
|
builder.appendff(" rise={}\n", state.rise);
|
|
builder.appendff(" knockout={}\n", state.knockout);
|
|
builder.append(" }"sv);
|
|
return format_builder.put_string(builder.to_string());
|
|
}
|
|
};
|
|
|
|
template<>
|
|
struct Formatter<PDF::GraphicsState> : Formatter<StringView> {
|
|
ErrorOr<void> format(FormatBuilder& format_builder, PDF::GraphicsState const& state)
|
|
{
|
|
StringBuilder builder;
|
|
builder.append("GraphicsState {\n"sv);
|
|
builder.appendff(" ctm={}\n", state.ctm);
|
|
builder.appendff(" stroke_color={}\n", state.stroke_color);
|
|
builder.appendff(" paint_color={}\n", state.paint_color);
|
|
builder.appendff(" line_width={}\n", state.line_width);
|
|
builder.appendff(" line_cap_style={}\n", state.line_cap_style);
|
|
builder.appendff(" line_join_style={}\n", state.line_join_style);
|
|
builder.appendff(" miter_limit={}\n", state.miter_limit);
|
|
builder.appendff(" line_dash_pattern={}\n", state.line_dash_pattern);
|
|
builder.appendff(" text_state={}\n", state.text_state);
|
|
builder.append('}');
|
|
return format_builder.put_string(builder.to_string());
|
|
}
|
|
};
|
|
|
|
}
|