diff options
Diffstat (limited to 'core/fpdfapi/render/fpdf_render_text.cpp')
| -rw-r--r-- | core/fpdfapi/render/fpdf_render_text.cpp | 455 |
1 files changed, 2 insertions, 453 deletions
diff --git a/core/fpdfapi/render/fpdf_render_text.cpp b/core/fpdfapi/render/fpdf_render_text.cpp index bf1d95ff74..1a749bcd21 100644 --- a/core/fpdfapi/render/fpdf_render_text.cpp +++ b/core/fpdfapi/render/fpdf_render_text.cpp @@ -20,8 +20,10 @@ #include "core/fpdfapi/page/cpdf_textobject.h" #include "core/fpdfapi/parser/cpdf_dictionary.h" #include "core/fpdfapi/parser/cpdf_document.h" +#include "core/fpdfapi/render/cpdf_charposlist.h" #include "core/fpdfapi/render/cpdf_docrenderdata.h" #include "core/fpdfapi/render/cpdf_renderoptions.h" +#include "core/fpdfapi/render/cpdf_renderstatus.h" #include "core/fpdfapi/render/cpdf_textrenderer.h" #include "core/fpdfapi/render/cpdf_type3cache.h" #include "core/fxge/cfx_facecache.h" @@ -32,403 +34,6 @@ #include "core/fxge/cfx_renderdevice.h" #include "third_party/base/numerics/safe_math.h" -bool CPDF_RenderStatus::ProcessText(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.GetTextMode(); - 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()) - bStroke = true; - else - bFill = true; - break; - case TextRenderingMode::MODE_FILL_STROKE: - case TextRenderingMode::MODE_FILL_STROKE_CLIP: - bFill = true; - if (pFont->GetFace()) - 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.GetCTM(); - 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 = ctm; - device_matrix.Concat(*pObj2Device); - pDeviceMatrix = &device_matrix; - } - } - int flag = 0; - if (bStroke && bFill) { - flag |= FX_FILL_STROKE; - flag |= FX_STROKE_TEXT_MODE; - } - if (textobj->m_GeneralState.GetStrokeAdjust()) - 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()); - 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; -}; - -// TODO(npm): Font fallback for type 3 fonts? (Completely separate code!!) -bool CPDF_RenderStatus::ProcessType3Text(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->GetDictFor("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.GetOuterRect(); - 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; - - pdfium::base::CheckedNumeric<int> left = glyph.m_OriginX; - left += glyph.m_pGlyph->m_Left; - left -= rect.left; - left *= sa; - if (!left.IsValid()) - continue; - - pdfium::base::CheckedNumeric<int> top = glyph.m_OriginY; - top -= glyph.m_pGlyph->m_Top; - top -= rect.top; - top *= sd; - if (!top.IsValid()) - continue; - - bitmap.CompositeMask(left.ValueOrDie(), top.ValueOrDie(), - glyph.m_pGlyph->m_Bitmap.GetWidth(), - glyph.m_pGlyph->m_Bitmap.GetHeight(), - &glyph.m_pGlyph->m_Bitmap, fill_argb, 0, 0, - FXDIB_BLEND_NORMAL, nullptr, false, 0, nullptr); - } - 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(); - 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 (charpos.m_GlyphIndex != static_cast<uint32_t>(-1)) { - charpos.m_FallbackFontPosition = -1; - } else { - charpos.m_FallbackFontPosition = - pFont->FallbackFontFromCharcode(CharCode); - charpos.m_GlyphIndex = pFont->FallbackGlyphFromCharcode( - charpos.m_FallbackFontPosition, CharCode); - } -// TODO(npm): Figure out how this affects m_ExtGID -#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 bool CPDF_TextRenderer::DrawTextPath(CFX_RenderDevice* pDevice, int nChars, @@ -604,59 +209,3 @@ bool CPDF_TextRenderer::DrawNormalText(CFX_RenderDevice* pDevice, } return bDraw; } - -void CPDF_RenderStatus::DrawTextPathWithPattern(const CPDF_TextObject* textobj, - const CFX_Matrix* pObj2Device, - CPDF_Font* pFont, - FX_FLOAT font_size, - const CFX_Matrix* pTextMatrix, - bool bFill, - 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.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; - } - 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]; - auto font = - charpos.m_FallbackFontPosition == -1 - ? &pFont->m_Font - : pFont->m_FontFallbacks[charpos.m_FallbackFontPosition].get(); - const CFX_PathData* pPath = - font->LoadGlyphPath(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.Append(pPath, &matrix); - path.m_Matrix = *pTextMatrix; - path.m_bStroke = bStroke; - path.m_FillType = bFill ? FXFILL_WINDING : 0; - path.CalcBoundingBox(); - ProcessPath(&path, pObj2Device); - } -} |