| // Copyright 2014 PDFium Authors. All rights reserved. |
| // 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 |
| |
| #include "core/fpdfapi/fpdf_render/render_int.h" |
| |
| #include <vector> |
| |
| #include "core/fpdfapi/fpdf_font/cpdf_cidfont.h" |
| #include "core/fpdfapi/fpdf_font/cpdf_type3char.h" |
| #include "core/fpdfapi/fpdf_font/cpdf_type3font.h" |
| #include "core/fpdfapi/fpdf_font/include/cpdf_font.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_form.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_imageobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_pageobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_pathobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_textobject.h" |
| #include "core/fpdfapi/fpdf_page/pageint.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_textrenderer.h" |
| #include "core/fxge/include/fx_ge.h" |
| |
| namespace { |
| |
| struct CPDF_UniqueKeyGen { |
| void Generate(int count, ...); |
| FX_CHAR m_Key[128]; |
| int m_KeyLen; |
| }; |
| |
| void CPDF_UniqueKeyGen::Generate(int count, ...) { |
| va_list argList; |
| va_start(argList, count); |
| for (int i = 0; i < count; i++) { |
| int p = va_arg(argList, int); |
| ((uint32_t*)m_Key)[i] = p; |
| } |
| va_end(argList); |
| m_KeyLen = count * sizeof(uint32_t); |
| } |
| |
| } // namespace |
| |
| CPDF_Type3Cache::CPDF_Type3Cache(CPDF_Type3Font* pFont) : m_pFont(pFont) {} |
| |
| CPDF_Type3Cache::~CPDF_Type3Cache() { |
| for (const auto& pair : m_SizeMap) { |
| delete pair.second; |
| } |
| m_SizeMap.clear(); |
| } |
| |
| CFX_GlyphBitmap* CPDF_Type3Cache::LoadGlyph(uint32_t charcode, |
| const CFX_Matrix* pMatrix, |
| FX_FLOAT retinaScaleX, |
| FX_FLOAT retinaScaleY) { |
| CPDF_UniqueKeyGen keygen; |
| keygen.Generate( |
| 4, FXSYS_round(pMatrix->a * 10000), FXSYS_round(pMatrix->b * 10000), |
| FXSYS_round(pMatrix->c * 10000), FXSYS_round(pMatrix->d * 10000)); |
| CFX_ByteString FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen); |
| CPDF_Type3Glyphs* pSizeCache; |
| auto it = m_SizeMap.find(FaceGlyphsKey); |
| if (it == m_SizeMap.end()) { |
| pSizeCache = new CPDF_Type3Glyphs; |
| m_SizeMap[FaceGlyphsKey] = pSizeCache; |
| } else { |
| pSizeCache = it->second; |
| } |
| auto it2 = pSizeCache->m_GlyphMap.find(charcode); |
| if (it2 != pSizeCache->m_GlyphMap.end()) |
| return it2->second; |
| |
| CFX_GlyphBitmap* pGlyphBitmap = |
| RenderGlyph(pSizeCache, charcode, pMatrix, retinaScaleX, retinaScaleY); |
| pSizeCache->m_GlyphMap[charcode] = pGlyphBitmap; |
| return pGlyphBitmap; |
| } |
| |
| CPDF_Type3Glyphs::CPDF_Type3Glyphs() |
| : m_TopBlueCount(0), m_BottomBlueCount(0) {} |
| |
| CPDF_Type3Glyphs::~CPDF_Type3Glyphs() { |
| for (const auto& pair : m_GlyphMap) |
| delete pair.second; |
| } |
| |
| static int _AdjustBlue(FX_FLOAT pos, int& count, int blues[]) { |
| FX_FLOAT min_distance = 1000000.0f * 1.0f; |
| int closest_pos = -1; |
| for (int i = 0; i < count; i++) { |
| FX_FLOAT distance = (FX_FLOAT)FXSYS_fabs(pos - (FX_FLOAT)blues[i]); |
| if (distance < 1.0f * 80.0f / 100.0f && distance < min_distance) { |
| min_distance = distance; |
| closest_pos = i; |
| } |
| } |
| if (closest_pos >= 0) { |
| return blues[closest_pos]; |
| } |
| int new_pos = FXSYS_round(pos); |
| if (count == TYPE3_MAX_BLUES) { |
| return new_pos; |
| } |
| blues[count++] = new_pos; |
| return new_pos; |
| } |
| void CPDF_Type3Glyphs::AdjustBlue(FX_FLOAT top, |
| FX_FLOAT bottom, |
| int& top_line, |
| int& bottom_line) { |
| top_line = _AdjustBlue(top, m_TopBlueCount, m_TopBlue); |
| bottom_line = _AdjustBlue(bottom, m_BottomBlueCount, m_BottomBlue); |
| } |
| |
| static FX_BOOL _IsScanLine1bpp(uint8_t* pBuf, int width) { |
| int size = width / 8; |
| for (int i = 0; i < size; i++) { |
| if (pBuf[i]) |
| return TRUE; |
| } |
| return (width % 8) && (pBuf[width / 8] & (0xff << (8 - width % 8))); |
| } |
| |
| static FX_BOOL _IsScanLine8bpp(uint8_t* pBuf, int width) { |
| for (int i = 0; i < width; i++) { |
| if (pBuf[i] > 0x40) |
| return TRUE; |
| } |
| return FALSE; |
| } |
| |
| static int _DetectFirstLastScan(const CFX_DIBitmap* pBitmap, FX_BOOL bFirst) { |
| int height = pBitmap->GetHeight(), pitch = pBitmap->GetPitch(), |
| width = pBitmap->GetWidth(); |
| int bpp = pBitmap->GetBPP(); |
| if (bpp > 8) { |
| width *= bpp / 8; |
| } |
| uint8_t* pBuf = pBitmap->GetBuffer(); |
| int line = bFirst ? 0 : height - 1; |
| int line_step = bFirst ? 1 : -1; |
| int line_end = bFirst ? height : -1; |
| while (line != line_end) { |
| if (bpp == 1) { |
| if (_IsScanLine1bpp(pBuf + line * pitch, width)) { |
| return line; |
| } |
| } else { |
| if (_IsScanLine8bpp(pBuf + line * pitch, width)) { |
| return line; |
| } |
| } |
| line += line_step; |
| } |
| return -1; |
| } |
| |
| CFX_GlyphBitmap* CPDF_Type3Cache::RenderGlyph(CPDF_Type3Glyphs* pSize, |
| uint32_t charcode, |
| const CFX_Matrix* pMatrix, |
| FX_FLOAT retinaScaleX, |
| FX_FLOAT retinaScaleY) { |
| const CPDF_Type3Char* pChar = m_pFont->LoadChar(charcode); |
| if (!pChar || !pChar->m_pBitmap) |
| return nullptr; |
| |
| CFX_DIBitmap* pBitmap = pChar->m_pBitmap.get(); |
| CFX_Matrix image_matrix, text_matrix; |
| image_matrix = pChar->m_ImageMatrix; |
| text_matrix.Set(pMatrix->a, pMatrix->b, pMatrix->c, pMatrix->d, 0, 0); |
| image_matrix.Concat(text_matrix); |
| std::unique_ptr<CFX_DIBitmap> pResBitmap; |
| int left = 0; |
| int top = 0; |
| if (FXSYS_fabs(image_matrix.b) < FXSYS_fabs(image_matrix.a) / 100 && |
| FXSYS_fabs(image_matrix.c) < FXSYS_fabs(image_matrix.d) / 100) { |
| int top_line = _DetectFirstLastScan(pBitmap, TRUE); |
| int bottom_line = _DetectFirstLastScan(pBitmap, FALSE); |
| if (top_line == 0 && bottom_line == pBitmap->GetHeight() - 1) { |
| FX_FLOAT top_y = image_matrix.d + image_matrix.f; |
| FX_FLOAT bottom_y = image_matrix.f; |
| FX_BOOL bFlipped = top_y > bottom_y; |
| if (bFlipped) { |
| FX_FLOAT temp = top_y; |
| top_y = bottom_y; |
| bottom_y = temp; |
| } |
| pSize->AdjustBlue(top_y, bottom_y, top_line, bottom_line); |
| pResBitmap.reset(pBitmap->StretchTo( |
| (int)(FXSYS_round(image_matrix.a) * retinaScaleX), |
| (int)((bFlipped ? top_line - bottom_line : bottom_line - top_line) * |
| retinaScaleY))); |
| top = top_line; |
| if (image_matrix.a < 0) { |
| image_matrix.Scale(retinaScaleX, retinaScaleY); |
| left = FXSYS_round(image_matrix.e + image_matrix.a); |
| } else { |
| left = FXSYS_round(image_matrix.e); |
| } |
| } |
| } |
| if (!pResBitmap) { |
| image_matrix.Scale(retinaScaleX, retinaScaleY); |
| pResBitmap.reset(pBitmap->TransformTo(&image_matrix, left, top)); |
| } |
| if (!pResBitmap) |
| return nullptr; |
| |
| CFX_GlyphBitmap* pGlyph = new CFX_GlyphBitmap; |
| pGlyph->m_Left = left; |
| pGlyph->m_Top = -top; |
| pGlyph->m_Bitmap.TakeOver(pResBitmap.get()); |
| return pGlyph; |
| } |
| |
| FX_BOOL CPDF_RenderStatus::ProcessText(const CPDF_TextObject* textobj, |
| const CFX_Matrix* pObj2Device, |
| CFX_PathData* pClippingPath) { |
| if (textobj->m_nChars == 0) |
| return TRUE; |
| |
| const TextRenderingMode& text_render_mode = |
| textobj->m_TextState.GetObject()->m_TextMode; |
| if (text_render_mode == TextRenderingMode::MODE_INVISIBLE) |
| return TRUE; |
| |
| CPDF_Font* pFont = textobj->m_TextState.GetFont(); |
| if (pFont->IsType3Font()) |
| return ProcessType3Text(textobj, pObj2Device); |
| |
| bool bFill = false; |
| bool bStroke = false; |
| bool bClip = false; |
| if (pClippingPath) { |
| bClip = true; |
| } else { |
| switch (text_render_mode) { |
| case TextRenderingMode::MODE_FILL: |
| case TextRenderingMode::MODE_FILL_CLIP: |
| bFill = true; |
| break; |
| case TextRenderingMode::MODE_STROKE: |
| case TextRenderingMode::MODE_STROKE_CLIP: |
| if (pFont->GetFace() || |
| (pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) { |
| bStroke = true; |
| } else { |
| bFill = true; |
| } |
| break; |
| case TextRenderingMode::MODE_FILL_STROKE: |
| case TextRenderingMode::MODE_FILL_STROKE_CLIP: |
| bFill = true; |
| if (pFont->GetFace() || |
| (pFont->GetSubstFont()->m_SubstFlags & FXFONT_SUBST_GLYPHPATH)) { |
| bStroke = true; |
| } |
| break; |
| case TextRenderingMode::MODE_INVISIBLE: |
| // Already handled above, but the compiler is not smart enough to |
| // realize it. Fall through. |
| ASSERT(false); |
| case TextRenderingMode::MODE_CLIP: |
| return TRUE; |
| } |
| } |
| FX_ARGB stroke_argb = 0; |
| FX_ARGB fill_argb = 0; |
| bool bPattern = false; |
| if (bStroke) { |
| if (textobj->m_ColorState.GetStrokeColor()->IsPattern()) { |
| bPattern = true; |
| } else { |
| stroke_argb = GetStrokeArgb(textobj); |
| } |
| } |
| if (bFill) { |
| if (textobj->m_ColorState.GetFillColor()->IsPattern()) { |
| bPattern = true; |
| } else { |
| fill_argb = GetFillArgb(textobj); |
| } |
| } |
| CFX_Matrix text_matrix; |
| textobj->GetTextMatrix(&text_matrix); |
| if (!IsAvailableMatrix(text_matrix)) |
| return TRUE; |
| |
| FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); |
| if (bPattern) { |
| DrawTextPathWithPattern(textobj, pObj2Device, pFont, font_size, |
| &text_matrix, bFill, bStroke); |
| return TRUE; |
| } |
| if (bClip || bStroke) { |
| const CFX_Matrix* pDeviceMatrix = pObj2Device; |
| CFX_Matrix device_matrix; |
| if (bStroke) { |
| const FX_FLOAT* pCTM = textobj->m_TextState.GetObject()->m_CTM; |
| if (pCTM[0] != 1.0f || pCTM[3] != 1.0f) { |
| CFX_Matrix ctm(pCTM[0], pCTM[1], pCTM[2], pCTM[3], 0, 0); |
| text_matrix.ConcatInverse(ctm); |
| device_matrix.Copy(ctm); |
| device_matrix.Concat(*pObj2Device); |
| pDeviceMatrix = &device_matrix; |
| } |
| } |
| int flag = 0; |
| if (bStroke && bFill) { |
| flag |= FX_FILL_STROKE; |
| flag |= FX_STROKE_TEXT_MODE; |
| } |
| const CPDF_GeneralStateData* pGeneralData = |
| static_cast<const CPDF_PageObject*>(textobj) |
| ->m_GeneralState.GetObject(); |
| if (pGeneralData && pGeneralData->m_StrokeAdjust) { |
| flag |= FX_STROKE_ADJUST; |
| } |
| if (m_Options.m_Flags & RENDER_NOTEXTSMOOTH) { |
| flag |= FXFILL_NOPATHSMOOTH; |
| } |
| return CPDF_TextRenderer::DrawTextPath( |
| m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, |
| textobj->m_pCharPos, pFont, font_size, &text_matrix, pDeviceMatrix, |
| textobj->m_GraphState.GetObject(), fill_argb, stroke_argb, |
| pClippingPath, flag); |
| } |
| text_matrix.Concat(*pObj2Device); |
| return CPDF_TextRenderer::DrawNormalText( |
| m_pDevice, textobj->m_nChars, textobj->m_pCharCodes, textobj->m_pCharPos, |
| pFont, font_size, &text_matrix, fill_argb, &m_Options); |
| } |
| |
| CPDF_Type3Cache* CPDF_RenderStatus::GetCachedType3(CPDF_Type3Font* pFont) { |
| if (!pFont->m_pDocument) { |
| return nullptr; |
| } |
| pFont->m_pDocument->GetPageData()->GetFont(pFont->GetFontDict(), FALSE); |
| return pFont->m_pDocument->GetRenderData()->GetCachedType3(pFont); |
| } |
| static void ReleaseCachedType3(CPDF_Type3Font* pFont) { |
| if (!pFont->m_pDocument) { |
| return; |
| } |
| pFont->m_pDocument->GetRenderData()->ReleaseCachedType3(pFont); |
| pFont->m_pDocument->GetPageData()->ReleaseFont(pFont->GetFontDict()); |
| } |
| |
| class CPDF_RefType3Cache { |
| public: |
| explicit CPDF_RefType3Cache(CPDF_Type3Font* pType3Font) |
| : m_dwCount(0), m_pType3Font(pType3Font) {} |
| ~CPDF_RefType3Cache() { |
| while (m_dwCount--) { |
| ReleaseCachedType3(m_pType3Font); |
| } |
| } |
| uint32_t m_dwCount; |
| CPDF_Type3Font* const m_pType3Font; |
| }; |
| |
| FX_BOOL CPDF_RenderStatus::ProcessType3Text(const CPDF_TextObject* textobj, |
| const CFX_Matrix* pObj2Device) { |
| CPDF_Type3Font* pType3Font = textobj->m_TextState.GetFont()->AsType3Font(); |
| for (int i = 0; i < m_Type3FontCache.GetSize(); ++i) { |
| if (m_Type3FontCache.GetAt(i) == pType3Font) |
| return TRUE; |
| } |
| |
| CFX_Matrix dCTM = m_pDevice->GetCTM(); |
| FX_FLOAT sa = FXSYS_fabs(dCTM.a); |
| FX_FLOAT sd = FXSYS_fabs(dCTM.d); |
| CFX_Matrix text_matrix; |
| textobj->GetTextMatrix(&text_matrix); |
| CFX_Matrix char_matrix = pType3Font->GetFontMatrix(); |
| FX_FLOAT font_size = textobj->m_TextState.GetFontSize(); |
| char_matrix.Scale(font_size, font_size); |
| FX_ARGB fill_argb = GetFillArgb(textobj, TRUE); |
| int fill_alpha = FXARGB_A(fill_argb); |
| int device_class = m_pDevice->GetDeviceClass(); |
| std::vector<FXTEXT_GLYPHPOS> glyphs; |
| if (device_class == FXDC_DISPLAY) |
| glyphs.resize(textobj->m_nChars); |
| else if (fill_alpha < 255) |
| return FALSE; |
| |
| CPDF_RefType3Cache refTypeCache(pType3Font); |
| uint32_t* pChars = textobj->m_pCharCodes; |
| if (textobj->m_nChars == 1) |
| pChars = (uint32_t*)(&textobj->m_pCharCodes); |
| |
| for (int iChar = 0; iChar < textobj->m_nChars; iChar++) { |
| uint32_t charcode = pChars[iChar]; |
| if (charcode == (uint32_t)-1) |
| continue; |
| |
| CPDF_Type3Char* pType3Char = pType3Font->LoadChar(charcode); |
| if (!pType3Char) |
| continue; |
| |
| CFX_Matrix matrix = char_matrix; |
| matrix.e += iChar ? textobj->m_pCharPos[iChar - 1] : 0; |
| matrix.Concat(text_matrix); |
| matrix.Concat(*pObj2Device); |
| if (!pType3Char->LoadBitmap(m_pContext)) { |
| if (!glyphs.empty()) { |
| for (int i = 0; i < iChar; i++) { |
| const FXTEXT_GLYPHPOS& glyph = glyphs[i]; |
| if (!glyph.m_pGlyph) |
| continue; |
| |
| m_pDevice->SetBitMask(&glyph.m_pGlyph->m_Bitmap, |
| glyph.m_OriginX + glyph.m_pGlyph->m_Left, |
| glyph.m_OriginY - glyph.m_pGlyph->m_Top, |
| fill_argb); |
| } |
| glyphs.clear(); |
| } |
| CPDF_GraphicStates* pStates = CloneObjStates(textobj, FALSE); |
| CPDF_RenderOptions Options = m_Options; |
| Options.m_Flags |= RENDER_FORCE_HALFTONE | RENDER_RECT_AA; |
| Options.m_Flags &= ~RENDER_FORCE_DOWNSAMPLE; |
| CPDF_Dictionary* pFormResource = nullptr; |
| if (pType3Char->m_pForm && pType3Char->m_pForm->m_pFormDict) { |
| pFormResource = |
| pType3Char->m_pForm->m_pFormDict->GetDictBy("Resources"); |
| } |
| if (fill_alpha == 255) { |
| CPDF_RenderStatus status; |
| status.Initialize(m_pContext, m_pDevice, nullptr, nullptr, this, |
| pStates, &Options, |
| pType3Char->m_pForm->m_Transparency, m_bDropObjects, |
| pFormResource, FALSE, pType3Char, fill_argb); |
| status.m_Type3FontCache.Append(m_Type3FontCache); |
| status.m_Type3FontCache.Add(pType3Font); |
| m_pDevice->SaveState(); |
| status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); |
| m_pDevice->RestoreState(false); |
| } else { |
| CFX_FloatRect rect_f = pType3Char->m_pForm->CalcBoundingBox(); |
| rect_f.Transform(&matrix); |
| FX_RECT rect = rect_f.GetOutterRect(); |
| CFX_FxgeDevice bitmap_device; |
| if (!bitmap_device.Create((int)(rect.Width() * sa), |
| (int)(rect.Height() * sd), FXDIB_Argb, |
| nullptr)) { |
| return TRUE; |
| } |
| bitmap_device.GetBitmap()->Clear(0); |
| CPDF_RenderStatus status; |
| status.Initialize(m_pContext, &bitmap_device, nullptr, nullptr, this, |
| pStates, &Options, |
| pType3Char->m_pForm->m_Transparency, m_bDropObjects, |
| pFormResource, FALSE, pType3Char, fill_argb); |
| status.m_Type3FontCache.Append(m_Type3FontCache); |
| status.m_Type3FontCache.Add(pType3Font); |
| matrix.TranslateI(-rect.left, -rect.top); |
| matrix.Scale(sa, sd); |
| status.RenderObjectList(pType3Char->m_pForm.get(), &matrix); |
| m_pDevice->SetDIBits(bitmap_device.GetBitmap(), rect.left, rect.top); |
| } |
| delete pStates; |
| } else if (pType3Char->m_pBitmap) { |
| if (device_class == FXDC_DISPLAY) { |
| CPDF_Type3Cache* pCache = GetCachedType3(pType3Font); |
| refTypeCache.m_dwCount++; |
| CFX_GlyphBitmap* pBitmap = pCache->LoadGlyph(charcode, &matrix, sa, sd); |
| if (!pBitmap) |
| continue; |
| |
| int origin_x = FXSYS_round(matrix.e); |
| int origin_y = FXSYS_round(matrix.f); |
| if (glyphs.empty()) { |
| m_pDevice->SetBitMask(&pBitmap->m_Bitmap, origin_x + pBitmap->m_Left, |
| origin_y - pBitmap->m_Top, fill_argb); |
| } else { |
| glyphs[iChar].m_pGlyph = pBitmap; |
| glyphs[iChar].m_OriginX = origin_x; |
| glyphs[iChar].m_OriginY = origin_y; |
| } |
| } else { |
| CFX_Matrix image_matrix = pType3Char->m_ImageMatrix; |
| image_matrix.Concat(matrix); |
| CPDF_ImageRenderer renderer; |
| if (renderer.Start(this, pType3Char->m_pBitmap.get(), fill_argb, 255, |
| &image_matrix, 0, FALSE)) { |
| renderer.Continue(nullptr); |
| } |
| if (!renderer.m_Result) |
| return FALSE; |
| } |
| } |
| } |
| |
| if (glyphs.empty()) |
| return TRUE; |
| |
| FX_RECT rect = FXGE_GetGlyphsBBox(glyphs, 0, sa, sd); |
| CFX_DIBitmap bitmap; |
| if (!bitmap.Create(static_cast<int>(rect.Width() * sa), |
| static_cast<int>(rect.Height() * sd), FXDIB_8bppMask)) { |
| return TRUE; |
| } |
| bitmap.Clear(0); |
| for (const FXTEXT_GLYPHPOS& glyph : glyphs) { |
| if (!glyph.m_pGlyph) |
| continue; |
| |
| bitmap.TransferBitmap( |
| static_cast<int>( |
| (glyph.m_OriginX + glyph.m_pGlyph->m_Left - rect.left) * sa), |
| static_cast<int>((glyph.m_OriginY - glyph.m_pGlyph->m_Top - rect.top) * |
| sd), |
| glyph.m_pGlyph->m_Bitmap.GetWidth(), |
| glyph.m_pGlyph->m_Bitmap.GetHeight(), &glyph.m_pGlyph->m_Bitmap, 0, 0); |
| } |
| m_pDevice->SetBitMask(&bitmap, rect.left, rect.top, fill_argb); |
| return TRUE; |
| } |
| |
| class CPDF_CharPosList { |
| public: |
| CPDF_CharPosList(); |
| ~CPDF_CharPosList(); |
| void Load(int nChars, |
| uint32_t* pCharCodes, |
| FX_FLOAT* pCharPos, |
| CPDF_Font* pFont, |
| FX_FLOAT font_size); |
| FXTEXT_CHARPOS* m_pCharPos; |
| uint32_t m_nChars; |
| }; |
| |
| CPDF_CharPosList::CPDF_CharPosList() { |
| m_pCharPos = nullptr; |
| } |
| |
| CPDF_CharPosList::~CPDF_CharPosList() { |
| FX_Free(m_pCharPos); |
| } |
| |
| void CPDF_CharPosList::Load(int nChars, |
| uint32_t* pCharCodes, |
| FX_FLOAT* pCharPos, |
| CPDF_Font* pFont, |
| FX_FLOAT FontSize) { |
| m_pCharPos = FX_Alloc(FXTEXT_CHARPOS, nChars); |
| m_nChars = 0; |
| CPDF_CIDFont* pCIDFont = pFont->AsCIDFont(); |
| FX_BOOL bVertWriting = pCIDFont && pCIDFont->IsVertWriting(); |
| for (int iChar = 0; iChar < nChars; iChar++) { |
| uint32_t CharCode = |
| nChars == 1 ? (uint32_t)(uintptr_t)pCharCodes : pCharCodes[iChar]; |
| if (CharCode == (uint32_t)-1) { |
| continue; |
| } |
| bool bVert = false; |
| FXTEXT_CHARPOS& charpos = m_pCharPos[m_nChars++]; |
| if (pCIDFont) { |
| charpos.m_bFontStyle = true; |
| } |
| charpos.m_GlyphIndex = pFont->GlyphFromCharCode(CharCode, &bVert); |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| charpos.m_ExtGID = pFont->GlyphFromCharCodeExt(CharCode); |
| #endif |
| if (!pFont->IsEmbedded() && !pFont->IsCIDFont()) { |
| charpos.m_FontCharWidth = pFont->GetCharWidthF(CharCode); |
| } else { |
| charpos.m_FontCharWidth = 0; |
| } |
| charpos.m_OriginX = iChar ? pCharPos[iChar - 1] : 0; |
| charpos.m_OriginY = 0; |
| charpos.m_bGlyphAdjust = FALSE; |
| if (!pCIDFont) { |
| continue; |
| } |
| uint16_t CID = pCIDFont->CIDFromCharCode(CharCode); |
| if (bVertWriting) { |
| charpos.m_OriginY = charpos.m_OriginX; |
| charpos.m_OriginX = 0; |
| short vx, vy; |
| pCIDFont->GetVertOrigin(CID, vx, vy); |
| charpos.m_OriginX -= FontSize * vx / 1000; |
| charpos.m_OriginY -= FontSize * vy / 1000; |
| } |
| const uint8_t* pTransform = pCIDFont->GetCIDTransform(CID); |
| if (pTransform && !bVert) { |
| charpos.m_AdjustMatrix[0] = pCIDFont->CIDTransformToFloat(pTransform[0]); |
| charpos.m_AdjustMatrix[2] = pCIDFont->CIDTransformToFloat(pTransform[2]); |
| charpos.m_AdjustMatrix[1] = pCIDFont->CIDTransformToFloat(pTransform[1]); |
| charpos.m_AdjustMatrix[3] = pCIDFont->CIDTransformToFloat(pTransform[3]); |
| charpos.m_OriginX += |
| pCIDFont->CIDTransformToFloat(pTransform[4]) * FontSize; |
| charpos.m_OriginY += |
| pCIDFont->CIDTransformToFloat(pTransform[5]) * FontSize; |
| charpos.m_bGlyphAdjust = TRUE; |
| } |
| } |
| } |
| |
| // static |
| FX_BOOL CPDF_TextRenderer::DrawTextPath(CFX_RenderDevice* pDevice, |
| int nChars, |
| uint32_t* pCharCodes, |
| FX_FLOAT* pCharPos, |
| CPDF_Font* pFont, |
| FX_FLOAT font_size, |
| const CFX_Matrix* pText2User, |
| const CFX_Matrix* pUser2Device, |
| const CFX_GraphStateData* pGraphState, |
| FX_ARGB fill_argb, |
| FX_ARGB stroke_argb, |
| CFX_PathData* pClippingPath, |
| int nFlag) { |
| CFX_FontCache* pCache = |
| pFont->m_pDocument ? pFont->m_pDocument->GetRenderData()->GetFontCache() |
| : nullptr; |
| CPDF_CharPosList CharPosList; |
| CharPosList.Load(nChars, pCharCodes, pCharPos, pFont, font_size); |
| return pDevice->DrawTextPathWithFlags( |
| CharPosList.m_nChars, CharPosList.m_pCharPos, &pFont->m_Font, pCache, |
| font_size, pText2User, pUser2Device, pGraphState, fill_argb, stroke_argb, |
| pClippingPath, nFlag); |
| } |
| |
| // static |
| void CPDF_TextRenderer::DrawTextString(CFX_RenderDevice* pDevice, |
| FX_FLOAT origin_x, |
| FX_FLOAT origin_y, |
| CPDF_Font* pFont, |
| FX_FLOAT font_size, |
| const CFX_Matrix* pMatrix, |
| const CFX_ByteString& str, |
| FX_ARGB fill_argb, |
| FX_ARGB stroke_argb, |
| const CFX_GraphStateData* pGraphState, |
| const CPDF_RenderOptions* pOptions) { |
| if (pFont->IsType3Font()) |
| return; |
| |
| int nChars = pFont->CountChar(str.c_str(), str.GetLength()); |
| if (nChars <= 0) |
| return; |
| |
| int offset = 0; |
| uint32_t* pCharCodes; |
| FX_FLOAT* pCharPos; |
| std::vector<uint32_t> codes; |
| std::vector<FX_FLOAT> positions; |
| if (nChars == 1) { |
| pCharCodes = reinterpret_cast<uint32_t*>( |
| pFont->GetNextChar(str.c_str(), str.GetLength(), offset)); |
| pCharPos = nullptr; |
| } else { |
| codes.resize(nChars); |
| positions.resize(nChars - 1); |
| FX_FLOAT cur_pos = 0; |
| for (int i = 0; i < nChars; i++) { |
| codes[i] = pFont->GetNextChar(str.c_str(), str.GetLength(), offset); |
| if (i) |
| positions[i - 1] = cur_pos; |
| cur_pos += pFont->GetCharWidthF(codes[i]) * font_size / 1000; |
| } |
| pCharCodes = codes.data(); |
| pCharPos = positions.data(); |
| } |
| CFX_Matrix matrix; |
| if (pMatrix) |
| matrix = *pMatrix; |
| |
| matrix.e = origin_x; |
| matrix.f = origin_y; |
| |
| if (stroke_argb == 0) { |
| DrawNormalText(pDevice, nChars, pCharCodes, pCharPos, pFont, font_size, |
| &matrix, fill_argb, pOptions); |
| } else { |
| DrawTextPath(pDevice, nChars, pCharCodes, pCharPos, pFont, font_size, |
| &matrix, nullptr, pGraphState, fill_argb, stroke_argb, nullptr, |
| 0); |
| } |
| } |
| |
| // static |
| FX_BOOL CPDF_TextRenderer::DrawNormalText(CFX_RenderDevice* pDevice, |
| int nChars, |
| uint32_t* pCharCodes, |
| FX_FLOAT* pCharPos, |
| CPDF_Font* pFont, |
| FX_FLOAT font_size, |
| const CFX_Matrix* pText2Device, |
| FX_ARGB fill_argb, |
| const CPDF_RenderOptions* pOptions) { |
| CFX_FontCache* pCache = |
| pFont->m_pDocument ? pFont->m_pDocument->GetRenderData()->GetFontCache() |
| : nullptr; |
| CPDF_CharPosList CharPosList; |
| CharPosList.Load(nChars, pCharCodes, pCharPos, pFont, font_size); |
| int FXGE_flags = 0; |
| if (pOptions) { |
| uint32_t dwFlags = pOptions->m_Flags; |
| if (dwFlags & RENDER_CLEARTYPE) { |
| FXGE_flags |= FXTEXT_CLEARTYPE; |
| if (dwFlags & RENDER_BGR_STRIPE) { |
| FXGE_flags |= FXTEXT_BGR_STRIPE; |
| } |
| } |
| if (dwFlags & RENDER_NOTEXTSMOOTH) { |
| FXGE_flags |= FXTEXT_NOSMOOTH; |
| } |
| if (dwFlags & RENDER_PRINTGRAPHICTEXT) { |
| FXGE_flags |= FXTEXT_PRINTGRAPHICTEXT; |
| } |
| if (dwFlags & RENDER_NO_NATIVETEXT) { |
| FXGE_flags |= FXTEXT_NO_NATIVETEXT; |
| } |
| if (dwFlags & RENDER_PRINTIMAGETEXT) { |
| FXGE_flags |= FXTEXT_PRINTIMAGETEXT; |
| } |
| } else { |
| FXGE_flags = FXTEXT_CLEARTYPE; |
| } |
| if (pFont->IsCIDFont()) { |
| FXGE_flags |= FXFONT_CIDFONT; |
| } |
| return pDevice->DrawNormalText(CharPosList.m_nChars, CharPosList.m_pCharPos, |
| &pFont->m_Font, pCache, font_size, |
| pText2Device, fill_argb, FXGE_flags); |
| } |
| |
| void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, |
| const CFX_Matrix* pObj2Device, |
| CPDF_Font* pFont, |
| FX_FLOAT font_size, |
| const CFX_Matrix* pTextMatrix, |
| FX_BOOL bFill, |
| FX_BOOL bStroke) { |
| if (!bStroke) { |
| CPDF_PathObject path; |
| std::vector<std::unique_ptr<CPDF_TextObject>> pCopy; |
| pCopy.push_back(std::unique_ptr<CPDF_TextObject>(textobj->Clone())); |
| path.m_bStroke = FALSE; |
| path.m_FillType = FXFILL_WINDING; |
| path.m_ClipPath.AppendTexts(&pCopy); |
| path.m_ColorState = textobj->m_ColorState; |
| path.m_Path.New()->AppendRect(textobj->m_Left, textobj->m_Bottom, |
| textobj->m_Right, textobj->m_Top); |
| path.m_Left = textobj->m_Left; |
| path.m_Bottom = textobj->m_Bottom; |
| path.m_Right = textobj->m_Right; |
| path.m_Top = textobj->m_Top; |
| RenderSingleObject(&path, pObj2Device); |
| return; |
| } |
| CFX_FontCache* pCache; |
| if (pFont->m_pDocument) { |
| pCache = pFont->m_pDocument->GetRenderData()->GetFontCache(); |
| } else { |
| pCache = CFX_GEModule::Get()->GetFontCache(); |
| } |
| CFX_FaceCache* pFaceCache = pCache->GetCachedFace(&pFont->m_Font); |
| CFX_AutoFontCache autoFontCache(pCache, &pFont->m_Font); |
| CPDF_CharPosList CharPosList; |
| CharPosList.Load(textobj->m_nChars, textobj->m_pCharCodes, |
| textobj->m_pCharPos, pFont, font_size); |
| for (uint32_t i = 0; i < CharPosList.m_nChars; i++) { |
| FXTEXT_CHARPOS& charpos = CharPosList.m_pCharPos[i]; |
| const CFX_PathData* pPath = pFaceCache->LoadGlyphPath( |
| &pFont->m_Font, charpos.m_GlyphIndex, charpos.m_FontCharWidth); |
| if (!pPath) { |
| continue; |
| } |
| CPDF_PathObject path; |
| path.m_GraphState = textobj->m_GraphState; |
| path.m_ColorState = textobj->m_ColorState; |
| CFX_Matrix matrix; |
| if (charpos.m_bGlyphAdjust) |
| matrix.Set(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1], |
| charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0); |
| matrix.Concat(font_size, 0, 0, font_size, charpos.m_OriginX, |
| charpos.m_OriginY); |
| path.m_Path.New()->Append(pPath, &matrix); |
| path.m_Matrix = *pTextMatrix; |
| path.m_bStroke = bStroke; |
| path.m_FillType = bFill ? FXFILL_WINDING : 0; |
| path.CalcBoundingBox(); |
| ProcessPath(&path, pObj2Device); |
| } |
| } |
