| // 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 <limits> |
| #include <vector> |
| |
| #include "core/fxcodec/include/fx_codec.h" |
| #include "core/fxcrt/include/fx_safe_types.h" |
| #include "core/fxge/ge/fx_text_int.h" |
| #include "core/fxge/include/cfx_fontmgr.h" |
| #include "core/fxge/include/cfx_gemodule.h" |
| #include "core/fxge/include/cfx_pathdata.h" |
| #include "core/fxge/include/fx_freetype.h" |
| #include "core/fxge/include/ifx_renderdevicedriver.h" |
| |
| #ifdef _SKIA_SUPPORT_ |
| #include "third_party/skia/include/core/SkStream.h" |
| #include "third_party/skia/include/core/SkTypeface.h" |
| #endif |
| |
| namespace { |
| |
| void ResetTransform(FT_Face face) { |
| FXFT_Matrix matrix; |
| matrix.xx = 0x10000L; |
| matrix.xy = 0; |
| matrix.yx = 0; |
| matrix.yy = 0x10000L; |
| FXFT_Set_Transform(face, &matrix, 0); |
| } |
| |
| // Sets the given transform on the font, and resets it to the identity when it |
| // goes out of scope. |
| class ScopedFontTransform { |
| public: |
| ScopedFontTransform(FT_Face face, FXFT_Matrix* matrix) : m_Face(face) { |
| FXFT_Set_Transform(m_Face, matrix, 0); |
| } |
| |
| ~ScopedFontTransform() { ResetTransform(m_Face); } |
| |
| private: |
| FT_Face m_Face; |
| }; |
| |
| } // namespace |
| |
| FX_RECT FXGE_GetGlyphsBBox(const std::vector<FXTEXT_GLYPHPOS>& glyphs, |
| int anti_alias, |
| FX_FLOAT retinaScaleX, |
| FX_FLOAT retinaScaleY) { |
| FX_RECT rect(0, 0, 0, 0); |
| bool bStarted = false; |
| for (const FXTEXT_GLYPHPOS& glyph : glyphs) { |
| const CFX_GlyphBitmap* pGlyph = glyph.m_pGlyph; |
| if (!pGlyph) |
| continue; |
| |
| FX_SAFE_INT32 char_left = glyph.m_OriginX; |
| char_left += pGlyph->m_Left; |
| if (!char_left.IsValid()) |
| continue; |
| |
| FX_SAFE_INT32 char_width = pGlyph->m_Bitmap.GetWidth(); |
| char_width /= retinaScaleX; |
| if (anti_alias == FXFT_RENDER_MODE_LCD) |
| char_width /= 3; |
| if (!char_width.IsValid()) |
| continue; |
| |
| FX_SAFE_INT32 char_right = char_left + char_width; |
| if (!char_right.IsValid()) |
| continue; |
| |
| FX_SAFE_INT32 char_top = glyph.m_OriginY; |
| char_top -= pGlyph->m_Top; |
| if (!char_top.IsValid()) |
| continue; |
| |
| FX_SAFE_INT32 char_height = pGlyph->m_Bitmap.GetHeight(); |
| char_height /= retinaScaleY; |
| if (!char_height.IsValid()) |
| continue; |
| |
| FX_SAFE_INT32 char_bottom = char_top + char_height; |
| if (!char_bottom.IsValid()) |
| continue; |
| |
| if (bStarted) { |
| rect.left = std::min(rect.left, char_left.ValueOrDie()); |
| rect.right = std::max(rect.right, char_right.ValueOrDie()); |
| rect.top = std::min(rect.top, char_top.ValueOrDie()); |
| rect.bottom = std::max(rect.bottom, char_bottom.ValueOrDie()); |
| continue; |
| } |
| |
| rect.left = char_left.ValueOrDie(); |
| rect.right = char_right.ValueOrDie(); |
| rect.top = char_top.ValueOrDie(); |
| rect.bottom = char_bottom.ValueOrDie(); |
| bStarted = true; |
| } |
| return rect; |
| } |
| |
| CFX_FontCache::CFX_FontCache() {} |
| |
| CFX_FontCache::~CFX_FontCache() { |
| FreeCache(TRUE); |
| } |
| |
| CFX_FaceCache* CFX_FontCache::GetCachedFace(CFX_Font* pFont) { |
| FXFT_Face internal_face = pFont->GetFace(); |
| const bool bExternal = !internal_face; |
| FXFT_Face face = |
| bExternal ? (FXFT_Face)pFont->GetSubstFont()->m_ExtHandle : internal_face; |
| CFX_FTCacheMap& map = bExternal ? m_ExtFaceMap : m_FTFaceMap; |
| auto it = map.find(face); |
| if (it != map.end()) { |
| CFX_CountedFaceCache* counted_face_cache = it->second; |
| counted_face_cache->m_nCount++; |
| return counted_face_cache->m_Obj; |
| } |
| |
| CFX_FaceCache* face_cache = new CFX_FaceCache(bExternal ? nullptr : face); |
| CFX_CountedFaceCache* counted_face_cache = new CFX_CountedFaceCache; |
| counted_face_cache->m_nCount = 2; |
| counted_face_cache->m_Obj = face_cache; |
| map[face] = counted_face_cache; |
| return face_cache; |
| } |
| |
| #ifdef _SKIA_SUPPORT_ |
| CFX_TypeFace* CFX_FontCache::GetDeviceCache(CFX_Font* pFont) { |
| return GetCachedFace(pFont)->GetDeviceCache(pFont); |
| } |
| |
| CFX_TypeFace* CFX_FaceCache::GetDeviceCache(CFX_Font* pFont) { |
| if (!m_pTypeface) { |
| m_pTypeface = |
| SkTypeface::MakeFromStream( |
| new SkMemoryStream(pFont->GetFontData(), pFont->GetSize())) |
| .release(); |
| } |
| return m_pTypeface; |
| } |
| #endif |
| |
| void CFX_FontCache::ReleaseCachedFace(CFX_Font* pFont) { |
| FXFT_Face internal_face = pFont->GetFace(); |
| const bool bExternal = !internal_face; |
| FXFT_Face face = |
| bExternal ? (FXFT_Face)pFont->GetSubstFont()->m_ExtHandle : internal_face; |
| CFX_FTCacheMap& map = bExternal ? m_ExtFaceMap : m_FTFaceMap; |
| |
| auto it = map.find(face); |
| if (it == map.end()) |
| return; |
| |
| CFX_CountedFaceCache* counted_face_cache = it->second; |
| if (counted_face_cache->m_nCount > 1) { |
| counted_face_cache->m_nCount--; |
| } |
| } |
| |
| void CFX_FontCache::FreeCache(FX_BOOL bRelease) { |
| for (auto it = m_FTFaceMap.begin(); it != m_FTFaceMap.end();) { |
| auto curr_it = it++; |
| CFX_CountedFaceCache* cache = curr_it->second; |
| if (bRelease || cache->m_nCount < 2) { |
| delete cache->m_Obj; |
| delete cache; |
| m_FTFaceMap.erase(curr_it); |
| } |
| } |
| |
| for (auto it = m_ExtFaceMap.begin(); it != m_ExtFaceMap.end();) { |
| auto curr_it = it++; |
| CFX_CountedFaceCache* cache = curr_it->second; |
| if (bRelease || cache->m_nCount < 2) { |
| delete cache->m_Obj; |
| delete cache; |
| m_ExtFaceMap.erase(curr_it); |
| } |
| } |
| } |
| |
| CFX_FaceCache::CFX_FaceCache(FXFT_Face face) |
| : m_Face(face) |
| #ifdef _SKIA_SUPPORT_ |
| , |
| m_pTypeface(nullptr) |
| #endif |
| { |
| } |
| |
| CFX_FaceCache::~CFX_FaceCache() { |
| for (const auto& pair : m_SizeMap) { |
| delete pair.second; |
| } |
| m_SizeMap.clear(); |
| for (const auto& pair : m_PathMap) { |
| delete pair.second; |
| } |
| m_PathMap.clear(); |
| #ifdef _SKIA_SUPPORT_ |
| SkSafeUnref(m_pTypeface); |
| #endif |
| } |
| |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ |
| void CFX_FaceCache::InitPlatform() {} |
| #endif |
| CFX_GlyphBitmap* CFX_FaceCache::LookUpGlyphBitmap( |
| CFX_Font* pFont, |
| const CFX_Matrix* pMatrix, |
| const CFX_ByteString& FaceGlyphsKey, |
| uint32_t glyph_index, |
| FX_BOOL bFontStyle, |
| int dest_width, |
| int anti_alias) { |
| CFX_SizeGlyphCache* pSizeCache; |
| auto it = m_SizeMap.find(FaceGlyphsKey); |
| if (it == m_SizeMap.end()) { |
| pSizeCache = new CFX_SizeGlyphCache; |
| m_SizeMap[FaceGlyphsKey] = pSizeCache; |
| } else { |
| pSizeCache = it->second; |
| } |
| auto it2 = pSizeCache->m_GlyphMap.find(glyph_index); |
| if (it2 != pSizeCache->m_GlyphMap.end()) |
| return it2->second; |
| |
| CFX_GlyphBitmap* pGlyphBitmap = RenderGlyph(pFont, glyph_index, bFontStyle, |
| pMatrix, dest_width, anti_alias); |
| if (!pGlyphBitmap) |
| return nullptr; |
| |
| pSizeCache->m_GlyphMap[glyph_index] = pGlyphBitmap; |
| return pGlyphBitmap; |
| } |
| const CFX_GlyphBitmap* CFX_FaceCache::LoadGlyphBitmap(CFX_Font* pFont, |
| uint32_t glyph_index, |
| FX_BOOL bFontStyle, |
| const CFX_Matrix* pMatrix, |
| int dest_width, |
| int anti_alias, |
| int& text_flags) { |
| if (glyph_index == (uint32_t)-1) { |
| return nullptr; |
| } |
| _CFX_UniqueKeyGen keygen; |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ |
| if (pFont->GetSubstFont()) |
| keygen.Generate(9, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias, pFont->GetSubstFont()->m_Weight, |
| pFont->GetSubstFont()->m_ItalicAngle, pFont->IsVertical()); |
| else |
| keygen.Generate(6, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias); |
| #else |
| if (text_flags & FXTEXT_NO_NATIVETEXT) { |
| if (pFont->GetSubstFont()) |
| keygen.Generate(9, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias, pFont->GetSubstFont()->m_Weight, |
| pFont->GetSubstFont()->m_ItalicAngle, |
| pFont->IsVertical()); |
| else |
| keygen.Generate(6, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias); |
| } else { |
| if (pFont->GetSubstFont()) |
| keygen.Generate(10, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias, pFont->GetSubstFont()->m_Weight, |
| pFont->GetSubstFont()->m_ItalicAngle, pFont->IsVertical(), |
| 3); |
| else |
| keygen.Generate(7, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias, 3); |
| } |
| #endif |
| CFX_ByteString FaceGlyphsKey(keygen.m_Key, keygen.m_KeyLen); |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ || defined _SKIA_SUPPORT_ |
| return LookUpGlyphBitmap(pFont, pMatrix, FaceGlyphsKey, glyph_index, |
| bFontStyle, dest_width, anti_alias); |
| #else |
| if (text_flags & FXTEXT_NO_NATIVETEXT) { |
| return LookUpGlyphBitmap(pFont, pMatrix, FaceGlyphsKey, glyph_index, |
| bFontStyle, dest_width, anti_alias); |
| } |
| CFX_GlyphBitmap* pGlyphBitmap; |
| auto it = m_SizeMap.find(FaceGlyphsKey); |
| if (it != m_SizeMap.end()) { |
| CFX_SizeGlyphCache* pSizeCache = it->second; |
| auto it2 = pSizeCache->m_GlyphMap.find(glyph_index); |
| if (it2 != pSizeCache->m_GlyphMap.end()) |
| return it2->second; |
| |
| pGlyphBitmap = RenderGlyph_Nativetext(pFont, glyph_index, pMatrix, |
| dest_width, anti_alias); |
| if (pGlyphBitmap) { |
| pSizeCache->m_GlyphMap[glyph_index] = pGlyphBitmap; |
| return pGlyphBitmap; |
| } |
| } else { |
| pGlyphBitmap = RenderGlyph_Nativetext(pFont, glyph_index, pMatrix, |
| dest_width, anti_alias); |
| if (pGlyphBitmap) { |
| CFX_SizeGlyphCache* pSizeCache = new CFX_SizeGlyphCache; |
| m_SizeMap[FaceGlyphsKey] = pSizeCache; |
| pSizeCache->m_GlyphMap[glyph_index] = pGlyphBitmap; |
| return pGlyphBitmap; |
| } |
| } |
| if (pFont->GetSubstFont()) |
| keygen.Generate(9, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias, pFont->GetSubstFont()->m_Weight, |
| pFont->GetSubstFont()->m_ItalicAngle, pFont->IsVertical()); |
| else |
| keygen.Generate(6, (int)(pMatrix->a * 10000), (int)(pMatrix->b * 10000), |
| (int)(pMatrix->c * 10000), (int)(pMatrix->d * 10000), |
| dest_width, anti_alias); |
| CFX_ByteString FaceGlyphsKey2(keygen.m_Key, keygen.m_KeyLen); |
| text_flags |= FXTEXT_NO_NATIVETEXT; |
| return LookUpGlyphBitmap(pFont, pMatrix, FaceGlyphsKey2, glyph_index, |
| bFontStyle, dest_width, anti_alias); |
| #endif |
| } |
| |
| CFX_SizeGlyphCache::CFX_SizeGlyphCache() {} |
| |
| CFX_SizeGlyphCache::~CFX_SizeGlyphCache() { |
| for (const auto& pair : m_GlyphMap) { |
| delete pair.second; |
| } |
| m_GlyphMap.clear(); |
| } |
| |
| #define CONTRAST_RAMP_STEP 1 |
| void CFX_Font::AdjustMMParams(int glyph_index, int dest_width, int weight) { |
| FXFT_MM_Var pMasters = nullptr; |
| FXFT_Get_MM_Var(m_Face, &pMasters); |
| if (!pMasters) { |
| return; |
| } |
| long coords[2]; |
| if (weight == 0) { |
| coords[0] = FXFT_Get_MM_Axis_Def(FXFT_Get_MM_Axis(pMasters, 0)) / 65536; |
| } else { |
| coords[0] = weight; |
| } |
| if (dest_width == 0) { |
| coords[1] = FXFT_Get_MM_Axis_Def(FXFT_Get_MM_Axis(pMasters, 1)) / 65536; |
| } else { |
| int min_param = FXFT_Get_MM_Axis_Min(FXFT_Get_MM_Axis(pMasters, 1)) / 65536; |
| int max_param = FXFT_Get_MM_Axis_Max(FXFT_Get_MM_Axis(pMasters, 1)) / 65536; |
| coords[1] = min_param; |
| (void)FXFT_Set_MM_Design_Coordinates(m_Face, 2, coords); |
| (void)FXFT_Load_Glyph( |
| m_Face, glyph_index, |
| FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); |
| int min_width = FXFT_Get_Glyph_HoriAdvance(m_Face) * 1000 / |
| FXFT_Get_Face_UnitsPerEM(m_Face); |
| coords[1] = max_param; |
| (void)FXFT_Set_MM_Design_Coordinates(m_Face, 2, coords); |
| (void)FXFT_Load_Glyph( |
| m_Face, glyph_index, |
| FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH); |
| int max_width = FXFT_Get_Glyph_HoriAdvance(m_Face) * 1000 / |
| FXFT_Get_Face_UnitsPerEM(m_Face); |
| if (max_width == min_width) { |
| FXFT_Free(m_Face, pMasters); |
| return; |
| } |
| int param = min_param + |
| (max_param - min_param) * (dest_width - min_width) / |
| (max_width - min_width); |
| coords[1] = param; |
| } |
| FXFT_Free(m_Face, pMasters); |
| FXFT_Set_MM_Design_Coordinates(m_Face, 2, coords); |
| } |
| static const size_t ANGLESKEW_ARRAY_SIZE = 30; |
| static const char g_AngleSkew[ANGLESKEW_ARRAY_SIZE] = { |
| 0, 2, 3, 5, 7, 9, 11, 12, 14, 16, 18, 19, 21, 23, 25, |
| 27, 29, 31, 32, 34, 36, 38, 40, 42, 45, 47, 49, 51, 53, 55, |
| }; |
| static const size_t WEIGHTPOW_ARRAY_SIZE = 100; |
| static const uint8_t g_WeightPow[WEIGHTPOW_ARRAY_SIZE] = { |
| 0, 3, 6, 7, 8, 9, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, |
| 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 35, 36, 36, 37, |
| 37, 37, 38, 38, 38, 39, 39, 39, 40, 40, 40, 41, 41, 41, 42, 42, 42, |
| 42, 43, 43, 43, 44, 44, 44, 44, 45, 45, 45, 45, 46, 46, 46, 46, 47, |
| 47, 47, 47, 48, 48, 48, 48, 48, 49, 49, 49, 49, 50, 50, 50, 50, 50, |
| 51, 51, 51, 51, 51, 52, 52, 52, 52, 52, 53, 53, 53, 53, 53, |
| }; |
| static const uint8_t g_WeightPow_11[WEIGHTPOW_ARRAY_SIZE] = { |
| 0, 4, 7, 8, 9, 10, 12, 13, 15, 17, 18, 19, 20, 21, 22, 23, 24, |
| 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 39, 39, 40, 40, 41, |
| 41, 41, 42, 42, 42, 43, 43, 43, 44, 44, 44, 45, 45, 45, 46, 46, 46, |
| 46, 43, 47, 47, 48, 48, 48, 48, 45, 50, 50, 50, 46, 51, 51, 51, 52, |
| 52, 52, 52, 53, 53, 53, 53, 53, 54, 54, 54, 54, 55, 55, 55, 55, 55, |
| 56, 56, 56, 56, 56, 57, 57, 57, 57, 57, 58, 58, 58, 58, 58, |
| }; |
| static const uint8_t g_WeightPow_SHIFTJIS[WEIGHTPOW_ARRAY_SIZE] = { |
| 0, 0, 1, 2, 3, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19, 21, |
| 22, 24, 26, 28, 30, 32, 33, 35, 37, 39, 41, 43, 45, 48, 48, 48, 48, |
| 49, 49, 49, 50, 50, 50, 50, 51, 51, 51, 51, 52, 52, 52, 52, 52, 53, |
| 53, 53, 53, 53, 54, 54, 54, 54, 54, 55, 55, 55, 55, 55, 56, 56, 56, |
| 56, 56, 56, 57, 57, 57, 57, 57, 57, 57, 58, 58, 58, 58, 58, 58, 58, |
| 59, 59, 59, 59, 59, 59, 59, 60, 60, 60, 60, 60, 60, 60, 60, |
| }; |
| static void _GammaAdjust(uint8_t* pData, |
| int nWid, |
| int nHei, |
| int src_pitch, |
| const uint8_t* gammaTable) { |
| int count = nHei * src_pitch; |
| for (int i = 0; i < count; i++) { |
| pData[i] = gammaTable[pData[i]]; |
| } |
| } |
| static void _ContrastAdjust(uint8_t* pDataIn, |
| uint8_t* pDataOut, |
| int nWid, |
| int nHei, |
| int nSrcRowBytes, |
| int nDstRowBytes) { |
| int col, row, temp; |
| int max = 0, min = 255; |
| FX_FLOAT rate; |
| for (row = 0; row < nHei; row++) { |
| uint8_t* pRow = pDataIn + row * nSrcRowBytes; |
| for (col = 0; col < nWid; col++) { |
| temp = *pRow++; |
| if (temp > max) { |
| max = temp; |
| } |
| if (temp < min) { |
| min = temp; |
| } |
| } |
| } |
| temp = max - min; |
| if (0 == temp || 255 == temp) { |
| int rowbytes = FXSYS_abs(nSrcRowBytes) > nDstRowBytes |
| ? nDstRowBytes |
| : FXSYS_abs(nSrcRowBytes); |
| for (row = 0; row < nHei; row++) { |
| FXSYS_memcpy(pDataOut + row * nDstRowBytes, pDataIn + row * nSrcRowBytes, |
| rowbytes); |
| } |
| return; |
| } |
| rate = 255.f / temp; |
| for (row = 0; row < nHei; row++) { |
| uint8_t* pSrcRow = pDataIn + row * nSrcRowBytes; |
| uint8_t* pDstRow = pDataOut + row * nDstRowBytes; |
| for (col = 0; col < nWid; col++) { |
| temp = (int)((*(pSrcRow++) - min) * rate + 0.5); |
| if (temp > 255) { |
| temp = 255; |
| } else if (temp < 0) { |
| temp = 0; |
| } |
| *pDstRow++ = (uint8_t)temp; |
| } |
| } |
| } |
| CFX_GlyphBitmap* CFX_FaceCache::RenderGlyph(CFX_Font* pFont, |
| uint32_t glyph_index, |
| FX_BOOL bFontStyle, |
| const CFX_Matrix* pMatrix, |
| int dest_width, |
| int anti_alias) { |
| if (!m_Face) { |
| return nullptr; |
| } |
| FXFT_Matrix ft_matrix; |
| ft_matrix.xx = (signed long)(pMatrix->GetA() / 64 * 65536); |
| ft_matrix.xy = (signed long)(pMatrix->GetC() / 64 * 65536); |
| ft_matrix.yx = (signed long)(pMatrix->GetB() / 64 * 65536); |
| ft_matrix.yy = (signed long)(pMatrix->GetD() / 64 * 65536); |
| FX_BOOL bUseCJKSubFont = FALSE; |
| const CFX_SubstFont* pSubstFont = pFont->GetSubstFont(); |
| if (pSubstFont) { |
| bUseCJKSubFont = pSubstFont->m_bSubstCJK && bFontStyle; |
| int skew = 0; |
| if (bUseCJKSubFont) { |
| skew = pSubstFont->m_bItalicCJK ? -15 : 0; |
| } else { |
| skew = pSubstFont->m_ItalicAngle; |
| } |
| if (skew) { |
| // |skew| is nonpositive so |-skew| is used as the index. We need to make |
| // sure |skew| != INT_MIN since -INT_MIN is undefined. |
| if (skew <= 0 && skew != std::numeric_limits<int>::min() && |
| static_cast<size_t>(-skew) < ANGLESKEW_ARRAY_SIZE) { |
| skew = -g_AngleSkew[-skew]; |
| } else { |
| skew = -58; |
| } |
| if (pFont->IsVertical()) |
| ft_matrix.yx += ft_matrix.yy * skew / 100; |
| else |
| ft_matrix.xy -= ft_matrix.xx * skew / 100; |
| } |
| if (pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) { |
| pFont->AdjustMMParams(glyph_index, dest_width, |
| pFont->GetSubstFont()->m_Weight); |
| } |
| } |
| ScopedFontTransform scoped_transform(m_Face, &ft_matrix); |
| int load_flags = (m_Face->face_flags & FT_FACE_FLAG_SFNT) |
| ? FXFT_LOAD_NO_BITMAP |
| : (FXFT_LOAD_NO_BITMAP | FT_LOAD_NO_HINTING); |
| int error = FXFT_Load_Glyph(m_Face, glyph_index, load_flags); |
| if (error) { |
| // if an error is returned, try to reload glyphs without hinting. |
| if (load_flags & FT_LOAD_NO_HINTING || load_flags & FT_LOAD_NO_SCALE) { |
| return nullptr; |
| } |
| |
| load_flags |= FT_LOAD_NO_HINTING; |
| error = FXFT_Load_Glyph(m_Face, glyph_index, load_flags); |
| |
| if (error) { |
| return nullptr; |
| } |
| } |
| int weight = 0; |
| if (bUseCJKSubFont) { |
| weight = pSubstFont->m_WeightCJK; |
| } else { |
| weight = pSubstFont ? pSubstFont->m_Weight : 0; |
| } |
| if (pSubstFont && !(pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) && |
| weight > 400) { |
| uint32_t index = (weight - 400) / 10; |
| if (index >= WEIGHTPOW_ARRAY_SIZE) |
| return nullptr; |
| int level = 0; |
| if (pSubstFont->m_Charset == FXFONT_SHIFTJIS_CHARSET) { |
| level = |
| g_WeightPow_SHIFTJIS[index] * 2 * |
| (FXSYS_abs((int)(ft_matrix.xx)) + FXSYS_abs((int)(ft_matrix.xy))) / |
| 36655; |
| } else { |
| level = g_WeightPow_11[index] * (FXSYS_abs((int)(ft_matrix.xx)) + |
| FXSYS_abs((int)(ft_matrix.xy))) / |
| 36655; |
| } |
| FXFT_Outline_Embolden(FXFT_Get_Glyph_Outline(m_Face), level); |
| } |
| FXFT_Library_SetLcdFilter(CFX_GEModule::Get()->GetFontMgr()->GetFTLibrary(), |
| FT_LCD_FILTER_DEFAULT); |
| error = FXFT_Render_Glyph(m_Face, anti_alias); |
| if (error) { |
| return nullptr; |
| } |
| int bmwidth = FXFT_Get_Bitmap_Width(FXFT_Get_Glyph_Bitmap(m_Face)); |
| int bmheight = FXFT_Get_Bitmap_Rows(FXFT_Get_Glyph_Bitmap(m_Face)); |
| if (bmwidth > 2048 || bmheight > 2048) { |
| return nullptr; |
| } |
| int dib_width = bmwidth; |
| CFX_GlyphBitmap* pGlyphBitmap = new CFX_GlyphBitmap; |
| pGlyphBitmap->m_Bitmap.Create( |
| dib_width, bmheight, |
| anti_alias == FXFT_RENDER_MODE_MONO ? FXDIB_1bppMask : FXDIB_8bppMask); |
| pGlyphBitmap->m_Left = FXFT_Get_Glyph_BitmapLeft(m_Face); |
| pGlyphBitmap->m_Top = FXFT_Get_Glyph_BitmapTop(m_Face); |
| int dest_pitch = pGlyphBitmap->m_Bitmap.GetPitch(); |
| int src_pitch = FXFT_Get_Bitmap_Pitch(FXFT_Get_Glyph_Bitmap(m_Face)); |
| uint8_t* pDestBuf = pGlyphBitmap->m_Bitmap.GetBuffer(); |
| uint8_t* pSrcBuf = |
| (uint8_t*)FXFT_Get_Bitmap_Buffer(FXFT_Get_Glyph_Bitmap(m_Face)); |
| if (anti_alias != FXFT_RENDER_MODE_MONO && |
| FXFT_Get_Bitmap_PixelMode(FXFT_Get_Glyph_Bitmap(m_Face)) == |
| FXFT_PIXEL_MODE_MONO) { |
| int bytes = anti_alias == FXFT_RENDER_MODE_LCD ? 3 : 1; |
| for (int i = 0; i < bmheight; i++) |
| for (int n = 0; n < bmwidth; n++) { |
| uint8_t data = |
| (pSrcBuf[i * src_pitch + n / 8] & (0x80 >> (n % 8))) ? 255 : 0; |
| for (int b = 0; b < bytes; b++) { |
| pDestBuf[i * dest_pitch + n * bytes + b] = data; |
| } |
| } |
| } else { |
| FXSYS_memset(pDestBuf, 0, dest_pitch * bmheight); |
| if (anti_alias == FXFT_RENDER_MODE_MONO && |
| FXFT_Get_Bitmap_PixelMode(FXFT_Get_Glyph_Bitmap(m_Face)) == |
| FXFT_PIXEL_MODE_MONO) { |
| int rowbytes = |
| FXSYS_abs(src_pitch) > dest_pitch ? dest_pitch : FXSYS_abs(src_pitch); |
| for (int row = 0; row < bmheight; row++) { |
| FXSYS_memcpy(pDestBuf + row * dest_pitch, pSrcBuf + row * src_pitch, |
| rowbytes); |
| } |
| } else { |
| _ContrastAdjust(pSrcBuf, pDestBuf, bmwidth, bmheight, src_pitch, |
| dest_pitch); |
| _GammaAdjust(pDestBuf, bmwidth, bmheight, dest_pitch, |
| CFX_GEModule::Get()->GetTextGammaTable()); |
| } |
| } |
| return pGlyphBitmap; |
| } |
| const CFX_PathData* CFX_FaceCache::LoadGlyphPath(CFX_Font* pFont, |
| uint32_t glyph_index, |
| int dest_width) { |
| if (!m_Face || glyph_index == (uint32_t)-1) |
| return nullptr; |
| |
| uint32_t key = glyph_index; |
| if (pFont->GetSubstFont()) { |
| key += (((pFont->GetSubstFont()->m_Weight / 16) << 15) + |
| ((pFont->GetSubstFont()->m_ItalicAngle / 2) << 21) + |
| ((dest_width / 16) << 25) + (pFont->IsVertical() << 31)); |
| } |
| auto it = m_PathMap.find(key); |
| if (it != m_PathMap.end()) |
| return it->second; |
| |
| CFX_PathData* pGlyphPath = pFont->LoadGlyphPath(glyph_index, dest_width); |
| m_PathMap[key] = pGlyphPath; |
| return pGlyphPath; |
| } |
| typedef struct { |
| FX_BOOL m_bCount; |
| int m_PointCount; |
| FX_PATHPOINT* m_pPoints; |
| int m_CurX; |
| int m_CurY; |
| FX_FLOAT m_CoordUnit; |
| } OUTLINE_PARAMS; |
| void _Outline_CheckEmptyContour(OUTLINE_PARAMS* param) { |
| if (param->m_PointCount >= 2 && |
| param->m_pPoints[param->m_PointCount - 2].m_Flag == FXPT_MOVETO && |
| param->m_pPoints[param->m_PointCount - 2].m_PointX == |
| param->m_pPoints[param->m_PointCount - 1].m_PointX && |
| param->m_pPoints[param->m_PointCount - 2].m_PointY == |
| param->m_pPoints[param->m_PointCount - 1].m_PointY) { |
| param->m_PointCount -= 2; |
| } |
| if (param->m_PointCount >= 4 && |
| param->m_pPoints[param->m_PointCount - 4].m_Flag == FXPT_MOVETO && |
| param->m_pPoints[param->m_PointCount - 3].m_Flag == FXPT_BEZIERTO && |
| param->m_pPoints[param->m_PointCount - 3].m_PointX == |
| param->m_pPoints[param->m_PointCount - 4].m_PointX && |
| param->m_pPoints[param->m_PointCount - 3].m_PointY == |
| param->m_pPoints[param->m_PointCount - 4].m_PointY && |
| param->m_pPoints[param->m_PointCount - 2].m_PointX == |
| param->m_pPoints[param->m_PointCount - 4].m_PointX && |
| param->m_pPoints[param->m_PointCount - 2].m_PointY == |
| param->m_pPoints[param->m_PointCount - 4].m_PointY && |
| param->m_pPoints[param->m_PointCount - 1].m_PointX == |
| param->m_pPoints[param->m_PointCount - 4].m_PointX && |
| param->m_pPoints[param->m_PointCount - 1].m_PointY == |
| param->m_pPoints[param->m_PointCount - 4].m_PointY) { |
| param->m_PointCount -= 4; |
| } |
| } |
| extern "C" { |
| static int _Outline_MoveTo(const FXFT_Vector* to, void* user) { |
| OUTLINE_PARAMS* param = (OUTLINE_PARAMS*)user; |
| if (!param->m_bCount) { |
| _Outline_CheckEmptyContour(param); |
| param->m_pPoints[param->m_PointCount].m_PointX = to->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_PointY = to->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_Flag = FXPT_MOVETO; |
| param->m_CurX = to->x; |
| param->m_CurY = to->y; |
| if (param->m_PointCount) { |
| param->m_pPoints[param->m_PointCount - 1].m_Flag |= FXPT_CLOSEFIGURE; |
| } |
| } |
| param->m_PointCount++; |
| return 0; |
| } |
| }; |
| extern "C" { |
| static int _Outline_LineTo(const FXFT_Vector* to, void* user) { |
| OUTLINE_PARAMS* param = (OUTLINE_PARAMS*)user; |
| if (!param->m_bCount) { |
| param->m_pPoints[param->m_PointCount].m_PointX = to->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_PointY = to->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_Flag = FXPT_LINETO; |
| param->m_CurX = to->x; |
| param->m_CurY = to->y; |
| } |
| param->m_PointCount++; |
| return 0; |
| } |
| }; |
| extern "C" { |
| static int _Outline_ConicTo(const FXFT_Vector* control, |
| const FXFT_Vector* to, |
| void* user) { |
| OUTLINE_PARAMS* param = (OUTLINE_PARAMS*)user; |
| if (!param->m_bCount) { |
| param->m_pPoints[param->m_PointCount].m_PointX = |
| (param->m_CurX + (control->x - param->m_CurX) * 2 / 3) / |
| param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_PointY = |
| (param->m_CurY + (control->y - param->m_CurY) * 2 / 3) / |
| param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_Flag = FXPT_BEZIERTO; |
| param->m_pPoints[param->m_PointCount + 1].m_PointX = |
| (control->x + (to->x - control->x) / 3) / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 1].m_PointY = |
| (control->y + (to->y - control->y) / 3) / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 1].m_Flag = FXPT_BEZIERTO; |
| param->m_pPoints[param->m_PointCount + 2].m_PointX = |
| to->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 2].m_PointY = |
| to->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 2].m_Flag = FXPT_BEZIERTO; |
| param->m_CurX = to->x; |
| param->m_CurY = to->y; |
| } |
| param->m_PointCount += 3; |
| return 0; |
| } |
| }; |
| extern "C" { |
| static int _Outline_CubicTo(const FXFT_Vector* control1, |
| const FXFT_Vector* control2, |
| const FXFT_Vector* to, |
| void* user) { |
| OUTLINE_PARAMS* param = (OUTLINE_PARAMS*)user; |
| if (!param->m_bCount) { |
| param->m_pPoints[param->m_PointCount].m_PointX = |
| control1->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_PointY = |
| control1->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount].m_Flag = FXPT_BEZIERTO; |
| param->m_pPoints[param->m_PointCount + 1].m_PointX = |
| control2->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 1].m_PointY = |
| control2->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 1].m_Flag = FXPT_BEZIERTO; |
| param->m_pPoints[param->m_PointCount + 2].m_PointX = |
| to->x / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 2].m_PointY = |
| to->y / param->m_CoordUnit; |
| param->m_pPoints[param->m_PointCount + 2].m_Flag = FXPT_BEZIERTO; |
| param->m_CurX = to->x; |
| param->m_CurY = to->y; |
| } |
| param->m_PointCount += 3; |
| return 0; |
| } |
| }; |
| CFX_PathData* CFX_Font::LoadGlyphPath(uint32_t glyph_index, int dest_width) { |
| if (!m_Face) { |
| return nullptr; |
| } |
| FXFT_Set_Pixel_Sizes(m_Face, 0, 64); |
| FXFT_Matrix ft_matrix = {65536, 0, 0, 65536}; |
| if (m_pSubstFont) { |
| if (m_pSubstFont->m_ItalicAngle) { |
| int skew = m_pSubstFont->m_ItalicAngle; |
| // |skew| is nonpositive so |-skew| is used as the index. We need to make |
| // sure |skew| != INT_MIN since -INT_MIN is undefined. |
| if (skew <= 0 && skew != std::numeric_limits<int>::min() && |
| static_cast<size_t>(-skew) < ANGLESKEW_ARRAY_SIZE) { |
| skew = -g_AngleSkew[-skew]; |
| } else { |
| skew = -58; |
| } |
| if (m_bVertical) |
| ft_matrix.yx += ft_matrix.yy * skew / 100; |
| else |
| ft_matrix.xy -= ft_matrix.xx * skew / 100; |
| } |
| if (m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) { |
| AdjustMMParams(glyph_index, dest_width, m_pSubstFont->m_Weight); |
| } |
| } |
| ScopedFontTransform scoped_transform(m_Face, &ft_matrix); |
| int load_flags = FXFT_LOAD_NO_BITMAP; |
| if (!(m_Face->face_flags & FT_FACE_FLAG_SFNT) || !FT_IS_TRICKY(m_Face)) { |
| load_flags |= FT_LOAD_NO_HINTING; |
| } |
| if (FXFT_Load_Glyph(m_Face, glyph_index, load_flags)) |
| return nullptr; |
| if (m_pSubstFont && !(m_pSubstFont->m_SubstFlags & FXFONT_SUBST_MM) && |
| m_pSubstFont->m_Weight > 400) { |
| uint32_t index = (m_pSubstFont->m_Weight - 400) / 10; |
| if (index >= WEIGHTPOW_ARRAY_SIZE) |
| index = WEIGHTPOW_ARRAY_SIZE - 1; |
| int level = 0; |
| if (m_pSubstFont->m_Charset == FXFONT_SHIFTJIS_CHARSET) |
| level = g_WeightPow_SHIFTJIS[index] * 2 * 65536 / 36655; |
| else |
| level = g_WeightPow[index] * 2; |
| FXFT_Outline_Embolden(FXFT_Get_Glyph_Outline(m_Face), level); |
| } |
| FXFT_Outline_Funcs funcs; |
| funcs.move_to = _Outline_MoveTo; |
| funcs.line_to = _Outline_LineTo; |
| funcs.conic_to = _Outline_ConicTo; |
| funcs.cubic_to = _Outline_CubicTo; |
| funcs.shift = 0; |
| funcs.delta = 0; |
| OUTLINE_PARAMS params; |
| params.m_bCount = TRUE; |
| params.m_PointCount = 0; |
| FXFT_Outline_Decompose(FXFT_Get_Glyph_Outline(m_Face), &funcs, ¶ms); |
| if (params.m_PointCount == 0) { |
| return nullptr; |
| } |
| CFX_PathData* pPath = new CFX_PathData; |
| pPath->SetPointCount(params.m_PointCount); |
| params.m_bCount = FALSE; |
| params.m_PointCount = 0; |
| params.m_pPoints = pPath->GetPoints(); |
| params.m_CurX = params.m_CurY = 0; |
| params.m_CoordUnit = 64 * 64.0; |
| FXFT_Outline_Decompose(FXFT_Get_Glyph_Outline(m_Face), &funcs, ¶ms); |
| _Outline_CheckEmptyContour(¶ms); |
| pPath->TrimPoints(params.m_PointCount); |
| if (params.m_PointCount) { |
| pPath->GetPoints()[params.m_PointCount - 1].m_Flag |= FXPT_CLOSEFIGURE; |
| } |
| return pPath; |
| } |
| void _CFX_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); |
| } |