fpdf_edittext.cpp | Explore in Territory

// Copyright 2017 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include <map>
#include <memory>
#include <sstream>
#include <utility>
#include <vector>

#include "core/fpdfapi/font/cpdf_cidfont.h"
#include "core/fpdfapi/font/cpdf_font.h"
#include "core/fpdfapi/page/cpdf_docpagedata.h"
#include "core/fpdfapi/page/cpdf_textobject.h"
#include "core/fpdfapi/page/cpdf_textstate.h"
#include "core/fpdfapi/parser/cpdf_array.h"
#include "core/fpdfapi/parser/cpdf_dictionary.h"
#include "core/fpdfapi/parser/cpdf_document.h"
#include "core/fpdfapi/parser/cpdf_name.h"
#include "core/fpdfapi/parser/cpdf_number.h"
#include "core/fpdfapi/parser/cpdf_reference.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
#include "core/fpdfapi/parser/cpdf_string.h"
#include "core/fpdfapi/render/charposlist.h"
#include "core/fpdfapi/render/cpdf_pagerendercontext.h"
#include "core/fpdfapi/render/cpdf_rendercontext.h"
#include "core/fpdfapi/render/cpdf_renderstatus.h"
#include "core/fpdfapi/render/cpdf_textrenderer.h"
#include "core/fpdftext/cpdf_textpage.h"
#include "core/fxcrt/check.h"
#include "core/fxcrt/check_op.h"
#include "core/fxcrt/compiler_specific.h"
#include "core/fxcrt/containers/contains.h"
#include "core/fxcrt/fx_extension.h"
#include "core/fxcrt/fx_memcpy_wrappers.h"
#include "core/fxcrt/fx_string_wrappers.h"
#include "core/fxcrt/numerics/safe_conversions.h"
#include "core/fxcrt/span_util.h"
#include "core/fxcrt/stl_util.h"
#include "core/fxcrt/utf16.h"
#include "core/fxge/cfx_defaultrenderdevice.h"
#include "core/fxge/cfx_fontmgr.h"
#include "core/fxge/dib/cfx_dibitmap.h"
#include "core/fxge/fx_font.h"
#include "core/fxge/text_char_pos.h"
#include "fpdfsdk/cpdfsdk_helpers.h"
#include "public/fpdf_edit.h"

// These checks are here because core/ and public/ cannot depend on each other.
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;
static_assert …;

namespace {

ByteString BaseFontNameForType(const CFX_Font* font, int font_type) { … }

RetainPtr<CPDF_Dictionary> CreateCompositeFontDict(CPDF_Document* doc,
                                                   const CFX_Font* font,
                                                   int font_type,
                                                   const ByteString& name) { … }

RetainPtr<CPDF_Dictionary> CreateCidFontDict(CPDF_Document* doc,
                                             int font_type,
                                             const ByteString& name) { … }

RetainPtr<CPDF_Dictionary> LoadFontDesc(CPDF_Document* doc,
                                        const ByteString& font_name,
                                        CFX_Font* font,
                                        pdfium::span<const uint8_t> font_data,
                                        int font_type) { … }

RetainPtr<CPDF_Array> CreateWidthsArray(
    CPDF_Document* doc,
    const std::map<uint32_t, uint32_t>& widths) { … }

const char kToUnicodeStart[] = …;

const char kToUnicodeEnd[] = …;

void AddCharcode(fxcrt::ostringstream& buffer, uint32_t number) { … }

// PDF spec 1.7 Section 5.9.2: "Unicode character sequences as expressed in
// UTF-16BE encoding." See https://en.wikipedia.org/wiki/UTF-16#Description
void AddUnicode(fxcrt::ostringstream& buffer, uint32_t unicode) { … }

// Loads the charcode to unicode mapping into a stream
RetainPtr<CPDF_Stream> LoadUnicode(
    CPDF_Document* doc,
    const std::multimap<uint32_t, uint32_t>& to_unicode) { … }

void CreateDescendantFontsArray(CPDF_Document* doc,
                                CPDF_Dictionary* font_dict,
                                uint32_t cid_font_dict_obj_num) { … }

RetainPtr<CPDF_Font> LoadSimpleFont(CPDF_Document* doc,
                                    std::unique_ptr<CFX_Font> font,
                                    pdfium::span<const uint8_t> font_data,
                                    int font_type) { … }

RetainPtr<CPDF_Font> LoadCompositeFont(CPDF_Document* doc,
                                       std::unique_ptr<CFX_Font> font,
                                       pdfium::span<const uint8_t> font_data,
                                       int font_type) { … }

RetainPtr<CPDF_Font> LoadCustomCompositeFont(
    CPDF_Document* doc,
    std::unique_ptr<CFX_Font> font,
    pdfium::span<const uint8_t> font_span,
    const char* to_unicode_cmap,
    pdfium::span<const uint8_t> cid_to_gid_map_span) { … }

CPDF_TextObject* CPDFTextObjectFromFPDFPageObject(FPDF_PAGEOBJECT page_object) { … }

FPDF_GLYPHPATH FPDFGlyphPathFromCFXPath(const CFX_Path* path) { … }
const CFX_Path* CFXPathFromFPDFGlyphPath(FPDF_GLYPHPATH path) { … }

}  // namespace

FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFPageObj_NewTextObj(FPDF_DOCUMENT document,
                       FPDF_BYTESTRING font,
                       float font_size) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFText_SetText(FPDF_PAGEOBJECT text_object, FPDF_WIDESTRING text) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFText_SetCharcodes(FPDF_PAGEOBJECT text_object,
                      const uint32_t* charcodes,
                      size_t count) { … }

FPDF_EXPORT FPDF_FONT FPDF_CALLCONV FPDFText_LoadFont(FPDF_DOCUMENT document,
                                                      const uint8_t* data,
                                                      uint32_t size,
                                                      int font_type,
                                                      FPDF_BOOL cid) { … }

FPDF_EXPORT FPDF_FONT FPDF_CALLCONV
FPDFText_LoadStandardFont(FPDF_DOCUMENT document, FPDF_BYTESTRING font) { … }

FPDF_EXPORT FPDF_FONT FPDF_CALLCONV
FPDFText_LoadCidType2Font(FPDF_DOCUMENT document,
                          const uint8_t* font_data,
                          uint32_t font_data_size,
                          FPDF_BYTESTRING to_unicode_cmap,
                          const uint8_t* cid_to_gid_map_data,
                          uint32_t cid_to_gid_map_data_size) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFTextObj_GetFontSize(FPDF_PAGEOBJECT text, float* size) { … }

FPDF_EXPORT unsigned long FPDF_CALLCONV
FPDFTextObj_GetText(FPDF_PAGEOBJECT text_object,
                    FPDF_TEXTPAGE text_page,
                    FPDF_WCHAR* buffer,
                    unsigned long length) { … }

FPDF_EXPORT FPDF_BITMAP FPDF_CALLCONV
FPDFTextObj_GetRenderedBitmap(FPDF_DOCUMENT document,
                              FPDF_PAGE page,
                              FPDF_PAGEOBJECT text_object,
                              float scale) { … }

FPDF_EXPORT void FPDF_CALLCONV FPDFFont_Close(FPDF_FONT font) { … }

FPDF_EXPORT FPDF_PAGEOBJECT FPDF_CALLCONV
FPDFPageObj_CreateTextObj(FPDF_DOCUMENT document,
                          FPDF_FONT font,
                          float font_size) { … }

FPDF_EXPORT FPDF_TEXT_RENDERMODE FPDF_CALLCONV
FPDFTextObj_GetTextRenderMode(FPDF_PAGEOBJECT text) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
FPDFTextObj_SetTextRenderMode(FPDF_PAGEOBJECT text,
                              FPDF_TEXT_RENDERMODE render_mode) { … }

FPDF_EXPORT FPDF_FONT FPDF_CALLCONV FPDFTextObj_GetFont(FPDF_PAGEOBJECT text) { … }

FPDF_EXPORT size_t FPDF_CALLCONV FPDFFont_GetBaseFontName(FPDF_FONT font,
                                                          char* buffer,
                                                          size_t length) { … }

FPDF_EXPORT size_t FPDF_CALLCONV FPDFFont_GetFamilyName(FPDF_FONT font,
                                                        char* buffer,
                                                        size_t length) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetFontData(FPDF_FONT font,
                                                         uint8_t* buffer,
                                                         size_t buflen,
                                                         size_t* out_buflen) { … }

FPDF_EXPORT int FPDF_CALLCONV FPDFFont_GetIsEmbedded(FPDF_FONT font) { … }

FPDF_EXPORT int FPDF_CALLCONV FPDFFont_GetFlags(FPDF_FONT font) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetWeight(FPDF_FONT font) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetItalicAngle(FPDF_FONT font,
                                                            int* angle) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetAscent(FPDF_FONT font,
                                                       float font_size,
                                                       float* ascent) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetDescent(FPDF_FONT font,
                                                        float font_size,
                                                        float* descent) { … }

FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV FPDFFont_GetGlyphWidth(FPDF_FONT font,
                                                           uint32_t glyph,
                                                           float font_size,
                                                           float* width) { … }

FPDF_EXPORT FPDF_GLYPHPATH FPDF_CALLCONV
FPDFFont_GetGlyphPath(FPDF_FONT font, uint32_t glyph, float font_size) { … }

FPDF_EXPORT int FPDF_CALLCONV
FPDFGlyphPath_CountGlyphSegments(FPDF_GLYPHPATH glyphpath) { … }

FPDF_EXPORT FPDF_PATHSEGMENT FPDF_CALLCONV
FPDFGlyphPath_GetGlyphPathSegment(FPDF_GLYPHPATH glyphpath, int index) { … }
chromium/third_party/pdfium/fpdfsdk/fpdf_edittext.cpp
