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// Copyright 2016 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#ifndef CORE_FXGE_WIN32_CFX_PSRENDERER_H_
#define CORE_FXGE_WIN32_CFX_PSRENDERER_H_
#include <stddef.h>
#include <stdint.h>
#include <memory>
#include <sstream>
#include <vector>
#include "core/fxcrt/bytestring.h"
#include "core/fxcrt/data_vector.h"
#include "core/fxcrt/fx_coordinates.h"
#include "core/fxcrt/fx_memory_wrappers.h"
#include "core/fxcrt/fx_stream.h"
#include "core/fxcrt/fx_string_wrappers.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
#include "core/fxge/cfx_graphstatedata.h"
#include "third_party/abseil-cpp/absl/types/optional.h"
#include "third_party/base/span.h"
class CFX_DIBBase;
class CFX_Font;
class CFX_GlyphCache;
class CFX_PSFontTracker;
class CFX_Path;
class TextCharPos;
struct CFX_FillRenderOptions;
struct FXDIB_ResampleOptions;
struct EncoderIface {
DataVector<uint8_t> (*pA85EncodeFunc)(pdfium::span<const uint8_t> src_span);
DataVector<uint8_t> (*pFaxEncodeFunc)(RetainPtr<CFX_DIBBase> src);
DataVector<uint8_t> (*pFlateEncodeFunc)(pdfium::span<const uint8_t> src_span);
bool (*pJpegEncodeFunc)(const RetainPtr<CFX_DIBBase>& pSource,
uint8_t** dest_buf,
size_t* dest_size);
DataVector<uint8_t> (*pRunLengthEncodeFunc)(
pdfium::span<const uint8_t> src_span);
};
class CFX_PSRenderer {
public:
enum class RenderingLevel {
kLevel2,
kLevel3,
kLevel3Type42,
};
CFX_PSRenderer(CFX_PSFontTracker* font_tracker,
const EncoderIface* encoder_iface);
~CFX_PSRenderer();
void Init(const RetainPtr<IFX_RetainableWriteStream>& stream,
RenderingLevel level,
int width,
int height);
void SaveState();
void RestoreState(bool bKeepSaved);
void SetClip_PathFill(const CFX_Path& path,
const CFX_Matrix* pObject2Device,
const CFX_FillRenderOptions& fill_options);
void SetClip_PathStroke(const CFX_Path& path,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState);
FX_RECT GetClipBox() { return m_ClipBox; }
bool DrawPath(const CFX_Path& path,
const CFX_Matrix* pObject2Device,
const CFX_GraphStateData* pGraphState,
uint32_t fill_color,
uint32_t stroke_color,
const CFX_FillRenderOptions& fill_options);
bool SetDIBits(const RetainPtr<CFX_DIBBase>& pBitmap,
uint32_t color,
int dest_left,
int dest_top);
bool StretchDIBits(const RetainPtr<CFX_DIBBase>& pBitmap,
uint32_t color,
int dest_left,
int dest_top,
int dest_width,
int dest_height,
const FXDIB_ResampleOptions& options);
bool DrawDIBits(const RetainPtr<CFX_DIBBase>& pBitmap,
uint32_t color,
const CFX_Matrix& matrix,
const FXDIB_ResampleOptions& options);
bool DrawText(int nChars,
const TextCharPos* pCharPos,
CFX_Font* pFont,
const CFX_Matrix& mtObject2Device,
float font_size,
uint32_t color);
static absl::optional<ByteString> GenerateType42SfntDataForTesting(
const ByteString& psname,
pdfium::span<const uint8_t> font_data);
static ByteString GenerateType42FontDictionaryForTesting(
const ByteString& psname,
const FX_RECT& bbox,
size_t num_glyphs,
size_t glyphs_per_descendant_font);
private:
struct Glyph;
struct FaxCompressResult {
FaxCompressResult();
FaxCompressResult(const FaxCompressResult&) = delete;
FaxCompressResult& operator=(const FaxCompressResult&) = delete;
FaxCompressResult(FaxCompressResult&&) noexcept;
FaxCompressResult& operator=(FaxCompressResult&&) noexcept;
~FaxCompressResult();
DataVector<uint8_t> data;
bool compressed = false;
};
struct PSCompressResult {
PSCompressResult();
PSCompressResult(const PSCompressResult&) = delete;
PSCompressResult& operator=(const PSCompressResult&) = delete;
PSCompressResult(PSCompressResult&&) noexcept;
PSCompressResult& operator=(PSCompressResult&&) noexcept;
~PSCompressResult();
DataVector<uint8_t> data;
ByteString filter;
};
void StartRendering();
void EndRendering();
void OutputPath(const CFX_Path& path, const CFX_Matrix* pObject2Device);
void SetGraphState(const CFX_GraphStateData* pGraphState);
void SetColor(uint32_t color);
void FindPSFontGlyph(CFX_GlyphCache* pGlyphCache,
CFX_Font* pFont,
const TextCharPos& charpos,
int* ps_fontnum,
int* ps_glyphindex);
void DrawTextAsType3Font(int char_count,
const TextCharPos* char_pos,
CFX_Font* font,
float font_size,
fxcrt::ostringstream& buf);
bool DrawTextAsType42Font(int char_count,
const TextCharPos* char_pos,
CFX_Font* font,
float font_size,
fxcrt::ostringstream& buf);
FaxCompressResult FaxCompressData(RetainPtr<CFX_DIBBase> src) const;
absl::optional<PSCompressResult> PSCompressData(
pdfium::span<const uint8_t> src_span) const;
void WritePreambleString(ByteStringView str);
void WritePSBinary(pdfium::span<const uint8_t> data);
void WriteStream(fxcrt::ostringstream& stream);
void WriteString(ByteStringView str);
bool m_bInited = false;
bool m_bGraphStateSet = false;
bool m_bColorSet = false;
absl::optional<RenderingLevel> m_Level;
uint32_t m_LastColor = 0;
FX_RECT m_ClipBox;
CFX_GraphStateData m_CurGraphState;
UnownedPtr<CFX_PSFontTracker> const m_pFontTracker;
UnownedPtr<const EncoderIface> const m_pEncoderIface;
RetainPtr<IFX_RetainableWriteStream> m_pStream;
std::vector<std::unique_ptr<Glyph>> m_PSFontList;
fxcrt::ostringstream m_PreambleOutput;
fxcrt::ostringstream m_Output;
std::vector<FX_RECT> m_ClipBoxStack;
};
#endif // CORE_FXGE_WIN32_CFX_PSRENDERER_H_