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authornpm <npm@chromium.org>2016-11-21 15:19:44 -0800
committerCommit bot <commit-bot@chromium.org>2016-11-21 15:19:44 -0800
commit4b91a2dfacee0c0f4068a7ab899c211480712d38 (patch)
tree460d84ea00a0cc7ab29ec27a4a2f4d317556e74b /xfa/fgas/font/cfgas_gefont.cpp
parent4ccdb1459239ae044f01c8b6799852f8b63acb80 (diff)
downloadpdfium-4b91a2dfacee0c0f4068a7ab899c211480712d38.tar.xz
Clean up CFGAS_GEFont
Removed some unused method, named files properly, cleaned up a bit. Review-Url: https://codereview.chromium.org/2524493002
Diffstat (limited to 'xfa/fgas/font/cfgas_gefont.cpp')
-rw-r--r--xfa/fgas/font/cfgas_gefont.cpp461
1 files changed, 461 insertions, 0 deletions
diff --git a/xfa/fgas/font/cfgas_gefont.cpp b/xfa/fgas/font/cfgas_gefont.cpp
new file mode 100644
index 0000000000..ffe791aab5
--- /dev/null
+++ b/xfa/fgas/font/cfgas_gefont.cpp
@@ -0,0 +1,461 @@
+// 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 "xfa/fgas/font/cfgas_gefont.h"
+
+#include <memory>
+#include <utility>
+
+#include "core/fxge/cfx_substfont.h"
+#include "core/fxge/cfx_unicodeencoding.h"
+#include "core/fxge/cfx_unicodeencodingex.h"
+#include "third_party/base/ptr_util.h"
+#include "xfa/fgas/crt/fgas_codepage.h"
+#include "xfa/fgas/font/fgas_fontutils.h"
+#include "xfa/fxfa/xfa_fontmgr.h"
+
+// static
+CFGAS_GEFont* CFGAS_GEFont::LoadFont(const FX_WCHAR* pszFontFamily,
+ uint32_t dwFontStyles,
+ uint16_t wCodePage,
+ CFGAS_FontMgr* pFontMgr) {
+#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
+ if (pFontMgr)
+ return pFontMgr->GetFontByCodePage(wCodePage, dwFontStyles, pszFontFamily);
+ return nullptr;
+#else
+ CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr);
+ if (!pFont->LoadFontInternal(pszFontFamily, dwFontStyles, wCodePage)) {
+ pFont->Release();
+ return nullptr;
+ }
+ return pFont;
+#endif
+}
+
+// static
+CFGAS_GEFont* CFGAS_GEFont::LoadFont(CFX_Font* pExternalFont,
+ CFGAS_FontMgr* pFontMgr) {
+ CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr);
+ if (!pFont->LoadFontInternal(pExternalFont)) {
+ pFont->Release();
+ return nullptr;
+ }
+ return pFont;
+}
+
+// static
+CFGAS_GEFont* CFGAS_GEFont::LoadFont(std::unique_ptr<CFX_Font> pInternalFont,
+ CFGAS_FontMgr* pFontMgr) {
+ CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr);
+ if (!pFont->LoadFontInternal(std::move(pInternalFont))) {
+ pFont->Release();
+ return nullptr;
+ }
+ return pFont;
+}
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+// static
+CFGAS_GEFont* CFGAS_GEFont::LoadFont(const uint8_t* pBuffer,
+ int32_t iLength,
+ CFGAS_FontMgr* pFontMgr) {
+ CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr);
+ if (!pFont->LoadFontInternal(pBuffer, iLength)) {
+ pFont->Release();
+ return nullptr;
+ }
+ return pFont;
+}
+
+// static
+CFGAS_GEFont* CFGAS_GEFont::LoadFont(IFX_Stream* pFontStream,
+ CFGAS_FontMgr* pFontMgr,
+ bool bSaveStream) {
+ CFGAS_GEFont* pFont = new CFGAS_GEFont(pFontMgr);
+ if (!pFont->LoadFontInternal(pFontStream, bSaveStream)) {
+ pFont->Release();
+ return nullptr;
+ }
+ return pFont;
+}
+#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+
+CFGAS_GEFont::CFGAS_GEFont(CFGAS_FontMgr* pFontMgr)
+ :
+#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
+ m_bUseLogFontStyle(false),
+ m_dwLogFontStyle(0),
+#endif
+ m_pFont(nullptr),
+ m_pSrcFont(nullptr),
+ m_pFontMgr(pFontMgr),
+ m_iRefCount(1),
+ m_bExternalFont(false),
+ m_pProvider(nullptr) {
+}
+
+CFGAS_GEFont::CFGAS_GEFont(CFGAS_GEFont* src, uint32_t dwFontStyles)
+ :
+#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
+ m_bUseLogFontStyle(false),
+ m_dwLogFontStyle(0),
+#endif
+ m_pFont(nullptr),
+ m_pSrcFont(src),
+ m_pFontMgr(src->m_pFontMgr),
+ m_iRefCount(1),
+ m_bExternalFont(false),
+ m_pProvider(nullptr) {
+ ASSERT(m_pSrcFont->m_pFont);
+ m_pSrcFont->Retain();
+ m_pFont = new CFX_Font;
+ m_pFont->LoadClone(m_pSrcFont->m_pFont);
+ CFX_SubstFont* pSubst = m_pFont->GetSubstFont();
+ if (!pSubst) {
+ pSubst = new CFX_SubstFont;
+ m_pFont->SetSubstFont(std::unique_ptr<CFX_SubstFont>(pSubst));
+ }
+ pSubst->m_Weight =
+ (dwFontStyles & FX_FONTSTYLE_Bold) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL;
+ if (dwFontStyles & FX_FONTSTYLE_Italic)
+ pSubst->m_SubstFlags |= FXFONT_SUBST_ITALIC;
+ InitFont();
+}
+
+CFGAS_GEFont::~CFGAS_GEFont() {
+ for (int32_t i = 0; i < m_SubstFonts.GetSize(); i++)
+ m_SubstFonts[i]->Release();
+
+ m_SubstFonts.RemoveAll();
+ m_FontMapper.clear();
+
+ if (!m_bExternalFont)
+ delete m_pFont;
+
+ // If it is a shallow copy of another source font,
+ // decrease the refcount of the source font.
+ if (m_pSrcFont)
+ m_pSrcFont->Release();
+}
+
+void CFGAS_GEFont::Release() {
+ if (--m_iRefCount < 1) {
+ if (m_pFontMgr)
+ m_pFontMgr->RemoveFont(this);
+ delete this;
+ }
+}
+CFGAS_GEFont* CFGAS_GEFont::Retain() {
+ ++m_iRefCount;
+ return this;
+}
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+bool CFGAS_GEFont::LoadFontInternal(const FX_WCHAR* pszFontFamily,
+ uint32_t dwFontStyles,
+ uint16_t wCodePage) {
+ if (m_pFont)
+ return false;
+ CFX_ByteString csFontFamily;
+ if (pszFontFamily)
+ csFontFamily = CFX_ByteString::FromUnicode(pszFontFamily);
+ uint32_t dwFlags = 0;
+ if (dwFontStyles & FX_FONTSTYLE_FixedPitch)
+ dwFlags |= FXFONT_FIXED_PITCH;
+ if (dwFontStyles & FX_FONTSTYLE_Serif)
+ dwFlags |= FXFONT_SERIF;
+ if (dwFontStyles & FX_FONTSTYLE_Symbolic)
+ dwFlags |= FXFONT_SYMBOLIC;
+ if (dwFontStyles & FX_FONTSTYLE_Script)
+ dwFlags |= FXFONT_SCRIPT;
+ if (dwFontStyles & FX_FONTSTYLE_Italic)
+ dwFlags |= FXFONT_ITALIC;
+ if (dwFontStyles & FX_FONTSTYLE_Bold)
+ dwFlags |= FXFONT_BOLD;
+ if (dwFontStyles & FX_FONTSTYLE_ExactMatch)
+ dwFlags |= FXFONT_EXACTMATCH;
+ int32_t iWeight =
+ (dwFontStyles & FX_FONTSTYLE_Bold) ? FXFONT_FW_BOLD : FXFONT_FW_NORMAL;
+ m_pFont = new CFX_Font;
+ if ((dwFlags & FXFONT_ITALIC) && (dwFlags & FXFONT_BOLD))
+ csFontFamily += ",BoldItalic";
+ else if (dwFlags & FXFONT_BOLD)
+ csFontFamily += ",Bold";
+ else if (dwFlags & FXFONT_ITALIC)
+ csFontFamily += ",Italic";
+ m_pFont->LoadSubst(csFontFamily, true, dwFlags, iWeight, 0, wCodePage, false);
+ if (!m_pFont->GetFace())
+ return false;
+ return InitFont();
+}
+
+bool CFGAS_GEFont::LoadFontInternal(const uint8_t* pBuffer, int32_t length) {
+ if (m_pFont)
+ return false;
+
+ m_pFont = new CFX_Font;
+ if (!m_pFont->LoadEmbedded(pBuffer, length))
+ return false;
+ return InitFont();
+}
+
+bool CFGAS_GEFont::LoadFontInternal(IFX_Stream* pFontStream, bool bSaveStream) {
+ if (m_pFont || m_pFileRead || !pFontStream || pFontStream->GetLength() < 1)
+ return false;
+ if (bSaveStream)
+ m_pStream.reset(pFontStream);
+
+ m_pFileRead.reset(FX_CreateFileRead(pFontStream, false));
+ m_pFont = new CFX_Font;
+ if (m_pFont->LoadFile(m_pFileRead.get()))
+ return InitFont();
+ m_pFileRead.reset();
+ return false;
+}
+#endif // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+
+bool CFGAS_GEFont::LoadFontInternal(CFX_Font* pExternalFont) {
+ if (m_pFont || !pExternalFont)
+ return false;
+
+ m_pFont = pExternalFont;
+ m_bExternalFont = true;
+ return InitFont();
+}
+
+bool CFGAS_GEFont::LoadFontInternal(std::unique_ptr<CFX_Font> pInternalFont) {
+ if (m_pFont || !pInternalFont)
+ return false;
+
+ m_pFont = pInternalFont.release();
+ m_bExternalFont = false;
+ return InitFont();
+}
+
+bool CFGAS_GEFont::InitFont() {
+ if (!m_pFont)
+ return false;
+ if (!m_pFontEncoding) {
+ m_pFontEncoding.reset(FX_CreateFontEncodingEx(m_pFont));
+ if (!m_pFontEncoding)
+ return false;
+ }
+ if (!m_pCharWidthMap) {
+ m_pCharWidthMap =
+ pdfium::MakeUnique<CFX_DiscreteArrayTemplate<uint16_t>>(1024);
+ }
+ if (!m_pRectArray)
+ m_pRectArray = pdfium::MakeUnique<CFX_MassArrayTemplate<CFX_Rect>>(16);
+ if (!m_pBBoxMap)
+ m_pBBoxMap = pdfium::MakeUnique<CFX_MapPtrToPtr>(16);
+
+ return true;
+}
+
+CFGAS_GEFont* CFGAS_GEFont::Derive(uint32_t dwFontStyles, uint16_t wCodePage) {
+ if (GetFontStyles() == dwFontStyles)
+ return Retain();
+ return new CFGAS_GEFont(this, dwFontStyles);
+}
+
+CFX_WideString CFGAS_GEFont::GetFamilyName() const {
+ if (!m_pFont->GetSubstFont() ||
+ m_pFont->GetSubstFont()->m_Family.GetLength() == 0) {
+ return CFX_WideString::FromLocal(m_pFont->GetFamilyName().AsStringC());
+ }
+ return CFX_WideString::FromLocal(
+ m_pFont->GetSubstFont()->m_Family.AsStringC());
+}
+
+uint32_t CFGAS_GEFont::GetFontStyles() const {
+ ASSERT(m_pFont);
+#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
+ if (m_bUseLogFontStyle)
+ return m_dwLogFontStyle;
+#endif
+
+ uint32_t dwStyles = 0;
+ auto* pSubstFont = m_pFont->GetSubstFont();
+ if (pSubstFont) {
+ if (pSubstFont->m_Weight == FXFONT_FW_BOLD)
+ dwStyles |= FX_FONTSTYLE_Bold;
+ if (pSubstFont->m_SubstFlags & FXFONT_SUBST_ITALIC)
+ dwStyles |= FX_FONTSTYLE_Italic;
+ } else {
+ if (m_pFont->IsBold())
+ dwStyles |= FX_FONTSTYLE_Bold;
+ if (m_pFont->IsItalic())
+ dwStyles |= FX_FONTSTYLE_Italic;
+ }
+ return dwStyles;
+}
+
+bool CFGAS_GEFont::GetCharWidth(FX_WCHAR wUnicode,
+ int32_t& iWidth,
+ bool bCharCode) {
+ return GetCharWidthInternal(wUnicode, iWidth, true, bCharCode);
+}
+
+bool CFGAS_GEFont::GetCharWidthInternal(FX_WCHAR wUnicode,
+ int32_t& iWidth,
+ bool bRecursive,
+ bool bCharCode) {
+ ASSERT(m_pCharWidthMap);
+ iWidth = m_pCharWidthMap->GetAt(wUnicode, 0);
+ if (iWidth == 65535)
+ return false;
+
+ if (iWidth > 0)
+ return true;
+
+ if (!m_pProvider ||
+ !m_pProvider->GetCharWidth(this, wUnicode, bCharCode, &iWidth)) {
+ CFGAS_GEFont* pFont = nullptr;
+ int32_t iGlyph = GetGlyphIndex(wUnicode, true, &pFont, bCharCode);
+ if (iGlyph != 0xFFFF && pFont) {
+ if (pFont == this) {
+ iWidth = m_pFont->GetGlyphWidth(iGlyph);
+ if (iWidth < 0)
+ iWidth = -1;
+ } else if (pFont->GetCharWidthInternal(wUnicode, iWidth, false,
+ bCharCode)) {
+ return true;
+ }
+ } else {
+ iWidth = -1;
+ }
+ }
+ m_pCharWidthMap->SetAtGrow(wUnicode, iWidth);
+ return iWidth > 0;
+}
+
+bool CFGAS_GEFont::GetCharBBox(FX_WCHAR wUnicode,
+ CFX_Rect& bbox,
+ bool bCharCode) {
+ return GetCharBBoxInternal(wUnicode, bbox, true, bCharCode);
+}
+
+bool CFGAS_GEFont::GetCharBBoxInternal(FX_WCHAR wUnicode,
+ CFX_Rect& bbox,
+ bool bRecursive,
+ bool bCharCode) {
+ ASSERT(m_pRectArray);
+ ASSERT(m_pBBoxMap);
+ void* pRect = nullptr;
+ if (!m_pBBoxMap->Lookup((void*)(uintptr_t)wUnicode, pRect)) {
+ CFGAS_GEFont* pFont = nullptr;
+ int32_t iGlyph = GetGlyphIndex(wUnicode, true, &pFont, bCharCode);
+ if (iGlyph != 0xFFFF && pFont) {
+ if (pFont == this) {
+ FX_RECT rtBBox;
+ if (m_pFont->GetGlyphBBox(iGlyph, rtBBox)) {
+ CFX_Rect rt;
+ rt.Set(rtBBox.left, rtBBox.top, rtBBox.Width(), rtBBox.Height());
+ int32_t index = m_pRectArray->Add(rt);
+ pRect = m_pRectArray->GetPtrAt(index);
+ m_pBBoxMap->SetAt((void*)(uintptr_t)wUnicode, pRect);
+ }
+ } else if (pFont->GetCharBBoxInternal(wUnicode, bbox, false, bCharCode)) {
+ return true;
+ }
+ }
+ }
+ if (!pRect)
+ return false;
+
+ bbox = *static_cast<const CFX_Rect*>(pRect);
+ return true;
+}
+
+bool CFGAS_GEFont::GetBBox(CFX_Rect& bbox) {
+ FX_RECT rt(0, 0, 0, 0);
+ if (!m_pFont->GetBBox(rt))
+ return false;
+ bbox.left = rt.left;
+ bbox.width = rt.Width();
+ bbox.top = rt.bottom;
+ bbox.height = -rt.Height();
+ return true;
+}
+
+int32_t CFGAS_GEFont::GetGlyphIndex(FX_WCHAR wUnicode, bool bCharCode) {
+ return GetGlyphIndex(wUnicode, true, nullptr, bCharCode);
+}
+
+int32_t CFGAS_GEFont::GetGlyphIndex(FX_WCHAR wUnicode,
+ bool bRecursive,
+ CFGAS_GEFont** ppFont,
+ bool bCharCode) {
+ ASSERT(m_pFontEncoding);
+ int32_t iGlyphIndex = m_pFontEncoding->GlyphFromCharCode(wUnicode);
+ if (iGlyphIndex > 0) {
+ if (ppFont)
+ *ppFont = this;
+ return iGlyphIndex;
+ }
+ const FGAS_FONTUSB* pFontUSB = FGAS_GetUnicodeBitField(wUnicode);
+ if (!pFontUSB)
+ return 0xFFFF;
+
+ uint16_t wBitField = pFontUSB->wBitField;
+ if (wBitField >= 128)
+ return 0xFFFF;
+
+ auto it = m_FontMapper.find(wUnicode);
+ CFGAS_GEFont* pFont = it != m_FontMapper.end() ? it->second : nullptr;
+ if (pFont && pFont != this) {
+ iGlyphIndex = pFont->GetGlyphIndex(wUnicode, false, nullptr, bCharCode);
+ if (iGlyphIndex != 0xFFFF) {
+ int32_t i = m_SubstFonts.Find(pFont);
+ if (i > -1) {
+ iGlyphIndex |= ((i + 1) << 24);
+ if (ppFont)
+ *ppFont = pFont;
+ return iGlyphIndex;
+ }
+ }
+ }
+ if (!m_pFontMgr || !bRecursive)
+ return 0xFFFF;
+ CFX_WideString wsFamily = GetFamilyName();
+ pFont =
+ m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), wsFamily.c_str());
+#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
+ if (!pFont)
+ pFont = m_pFontMgr->GetFontByUnicode(wUnicode, GetFontStyles(), nullptr);
+#endif
+ if (!pFont)
+ return 0xFFFF;
+ if (pFont == this) {
+ pFont->Release();
+ return 0xFFFF;
+ }
+ m_FontMapper[wUnicode] = pFont;
+ int32_t i = m_SubstFonts.GetSize();
+ m_SubstFonts.Add(pFont);
+ iGlyphIndex = pFont->GetGlyphIndex(wUnicode, false, nullptr, bCharCode);
+ if (iGlyphIndex == 0xFFFF)
+ return 0xFFFF;
+ iGlyphIndex |= ((i + 1) << 24);
+ if (ppFont)
+ *ppFont = pFont;
+ return iGlyphIndex;
+}
+
+int32_t CFGAS_GEFont::GetAscent() const {
+ return m_pFont->GetAscent();
+}
+
+int32_t CFGAS_GEFont::GetDescent() const {
+ return m_pFont->GetDescent();
+}
+
+CFGAS_GEFont* CFGAS_GEFont::GetSubstFont(int32_t iGlyphIndex) const {
+ iGlyphIndex = static_cast<uint32_t>(iGlyphIndex) >> 24;
+ return iGlyphIndex == 0 ? const_cast<CFGAS_GEFont*>(this)
+ : m_SubstFonts[iGlyphIndex - 1];
+}