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bedff876b8
Replace a number of UNSAFE_TODO() with a single one at the API boundary. Change-Id: Ica433bf356d98ab0bb629d4bfe7856e1a9786ff2 Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/151451 Reviewed-by: Lei Zhang <thestig@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
125 lines
3.6 KiB
C++
125 lines
3.6 KiB
C++
// Copyright 2016 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXGE_CFX_GEMODULE_H_
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#define CORE_FXGE_CFX_GEMODULE_H_
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#include <stdint.h>
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#include <memory>
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#include <optional>
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#include "build/build_config.h"
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#include "core/fxcrt/data_vector.h"
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#include "core/fxcrt/retain_ptr.h"
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#include "core/fxcrt/span.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "core/fxge/cfx_fontmgr.h"
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class CFX_DIBBase;
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class SystemFontInfoIface;
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#if BUILDFLAG(IS_WIN)
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enum class WindowsPrintMode {
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kEmf = 0,
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kTextOnly = 1,
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kPostScript2 = 2,
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kPostScript3 = 3,
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kPostScript2PassThrough = 4,
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kPostScript3PassThrough = 5,
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kEmfImageMasks = 6,
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kPostScript3Type42 = 7,
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kPostScript3Type42PassThrough = 8,
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};
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#endif
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struct EncoderIface {
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DataVector<uint8_t> (*pA85EncodeFunc)(pdfium::span<const uint8_t> src_span);
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DataVector<uint8_t> (*pFaxEncodeFunc)(RetainPtr<const CFX_DIBBase> src);
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DataVector<uint8_t> (*pFlateEncodeFunc)(pdfium::span<const uint8_t> src_span);
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bool (*pJpegEncodeFunc)(const RetainPtr<const CFX_DIBBase>& pSource,
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uint8_t** dest_buf,
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size_t* dest_size);
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DataVector<uint8_t> (*pRunLengthEncodeFunc)(
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pdfium::span<const uint8_t> src_span);
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};
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class CFX_GEModule {
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public:
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class PlatformIface {
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public:
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static std::unique_ptr<PlatformIface> Create();
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virtual ~PlatformIface() = default;
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virtual void Init() = 0;
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virtual void Terminate() = 0;
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virtual std::unique_ptr<SystemFontInfoIface>
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CreateDefaultSystemFontInfo() = 0;
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#if BUILDFLAG(IS_APPLE)
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virtual void* CreatePlatformFont(pdfium::span<const uint8_t> font_span) = 0;
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#endif
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};
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// This internal definition of renderer types must stay updated with respect
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// to the public definition of `FPDF_RENDERER_TYPE` in `fpdfview.h`.
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enum class RendererType {
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kAgg = 0,
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kSkia = 1,
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#if defined(PDF_USE_SKIA)
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kDefault = kSkia,
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#else
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kDefault = kAgg,
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#endif
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};
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// Uses other defaults when `user_font_paths` is nullopt, otherwise uses
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// only those in the span, which may lead to using none when empty.
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static void Create(
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std::optional<pdfium::span<const char* const>> user_font_paths,
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RendererType renderer_type,
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CFX_FontMgr::FontBackend backend);
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static void Destroy();
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static CFX_GEModule* Get();
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CFX_FontMgr* GetFontMgr() const { return font_mgr_.get(); }
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PlatformIface* GetPlatform() const { return platform_.get(); }
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std::optional<pdfium::span<const char* const>> GetUserFontPaths() const {
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return user_font_paths_;
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}
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void SetEncoderIface(const EncoderIface* encoders) {
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encoder_iface_ = encoders;
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}
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const EncoderIface* GetEncoderIface() const { return encoder_iface_.get(); }
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#if BUILDFLAG(IS_WIN)
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static void SetPrintMode(WindowsPrintMode mode);
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static WindowsPrintMode GetPrintMode();
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#endif
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#if defined(PDF_USE_SKIA)
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// Runtime check to see if Skia is the renderer variant in use.
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bool UseSkiaRenderer() const { return renderer_type_ == RendererType::kSkia; }
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#endif
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private:
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CFX_GEModule(std::optional<pdfium::span<const char* const>> user_font_paths,
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RendererType renderer_type,
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CFX_FontMgr::FontBackend backend);
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~CFX_GEModule();
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const RendererType renderer_type_;
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std::unique_ptr<PlatformIface> const platform_; // Must outlive `font_mgr_`.
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std::unique_ptr<CFX_FontMgr> const font_mgr_;
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std::optional<pdfium::span<const char* const>> user_font_paths_;
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UnownedPtr<const EncoderIface> encoder_iface_;
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};
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#endif // CORE_FXGE_CFX_GEMODULE_H_
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