Avoiding multiple text/string parsing while creating TextRun

Source/platform/text/TextRun.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2006, 2007, 2011 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  *
  */
 
 #ifndef TextRun_h
 #define TextRun_h
 
 #include "platform/PlatformExport.h"
 #include "platform/geometry/FloatRect.h"
 #include "platform/text/TextDirection.h"
+#include "platform/text/TextPath.h"
 #include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
 
 namespace WebCore {
 
 class FloatPoint;
 class Font;
 class GraphicsContext;
 class GlyphBuffer;
 class SimpleFontData;
@@ skipping 29 matching lines @@
         , m_expansionBehavior(expansionBehavior)
         , m_is8Bit(true)
         , m_allowTabs(false)
         , m_direction(direction)
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_applyRunRounding((roundingHacks & RunRounding) && s_allowsRoundingHacks)
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         m_data.characters8 = c;
     }
 
     TextRun(const UChar* c, unsigned len, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
         : m_charactersLength(len)
         , m_len(len)
         , m_xpos(xpos)
         , m_horizontalGlyphStretch(1)
         , m_expansion(expansion)
         , m_expansionBehavior(expansionBehavior)
         , m_is8Bit(false)
         , m_allowTabs(false)
         , m_direction(direction)
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_applyRunRounding((roundingHacks & RunRounding) && s_allowsRoundingHacks)
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         m_data.characters16 = c;
     }
 
     TextRun(const String& string, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
         : m_charactersLength(string.length())
         , m_len(string.length())
         , m_xpos(xpos)
         , m_horizontalGlyphStretch(1)
         , m_expansion(expansion)
         , m_expansionBehavior(expansionBehavior)
         , m_allowTabs(false)
         , m_direction(direction)
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_applyRunRounding((roundingHacks & RunRounding) && s_allowsRoundingHacks)
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
             m_data.characters8 = 0;
         } else if (string.is8Bit()) {
             m_data.characters8 = string.characters8();
             m_is8Bit = true;
         } else {
             m_data.characters16 = string.characters16();
             m_is8Bit = false;
         }
     }
 
     TextRun(const StringView& string, float xpos = 0, float expansion = 0, ExpansionBehavior expansionBehavior = AllowTrailingExpansion | ForbidLeadingExpansion, TextDirection direction = LTR, bool directionalOverride = false, bool characterScanForCodePath = true, RoundingHacks roundingHacks = RunRounding | WordRounding)
         : m_charactersLength(string.length())
         , m_len(string.length())
         , m_xpos(xpos)
         , m_horizontalGlyphStretch(1)
         , m_expansion(expansion)
         , m_expansionBehavior(expansionBehavior)
         , m_allowTabs(false)
         , m_direction(direction)
         , m_directionalOverride(directionalOverride)
         , m_characterScanForCodePath(characterScanForCodePath)
         , m_applyRunRounding((roundingHacks & RunRounding) && s_allowsRoundingHacks)
         , m_applyWordRounding((roundingHacks & WordRounding) && s_allowsRoundingHacks)
         , m_disableSpacing(false)
         , m_tabSize(0)
+        , m_textCodePath(AutoPath)
     {
         if (!m_charactersLength) {
             m_is8Bit = true;
             m_data.characters8 = 0;
         } else if (string.is8Bit()) {
             m_data.characters8 = string.characters8();
             m_is8Bit = true;
         } else {
             m_data.characters16 = string.characters16();
             m_is8Bit = false;
         }
     }
 
     TextRun subRun(unsigned startOffset, unsigned length) const
     {
         ASSERT(startOffset < m_len);
 
         TextRun result = *this;
 
         if (is8Bit()) {
             result.setText(data8(startOffset), length);
             return result;
         }
         result.setText(data16(startOffset), length);
         return result;
     }
 
+    void setCharacterScanForCodePathValue(CodePath textCodePath)
+    {
+        m_textCodePath = textCodePath;
+
+#if ENABLE(SVG_FONTS)
+        if (renderingContext())
+            m_textCodePath = SimplePath;
+#endif
+    }
+
     UChar operator[](unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); return is8Bit() ? m_data.characters8[i] :m_data.characters16[i]; }
     const LChar* data8(unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); ASSERT(is8Bit()); return &m_data.characters8[i]; }
     const UChar* data16(unsigned i) const { ASSERT_WITH_SECURITY_IMPLICATION(i < m_len); ASSERT(!is8Bit()); return &m_data.characters16[i]; }
 
     const LChar* characters8() const { ASSERT(is8Bit()); return m_data.characters8; }
     const UChar* characters16() const { ASSERT(!is8Bit()); return m_data.characters16; }
 
     bool is8Bit() const { return m_is8Bit; }
     int length() const { return m_len; }
     int charactersLength() const { return m_charactersLength; }
@@ skipping 13 matching lines @@
     float xPos() const { return m_xpos; }
     void setXPos(float xPos) { m_xpos = xPos; }
     float expansion() const { return m_expansion; }
     bool allowsLeadingExpansion() const { return m_expansionBehavior & AllowLeadingExpansion; }
     bool allowsTrailingExpansion() const { return m_expansionBehavior & AllowTrailingExpansion; }
     TextDirection direction() const { return static_cast<TextDirection>(m_direction); }
     bool rtl() const { return m_direction == RTL; }
     bool ltr() const { return m_direction == LTR; }
     bool directionalOverride() const { return m_directionalOverride; }
     bool characterScanForCodePath() const { return m_characterScanForCodePath; }
+    CodePath characterScanForCodePathValue() const { return m_textCodePath; }
     bool applyRunRounding() const { return m_applyRunRounding; }
     bool applyWordRounding() const { return m_applyWordRounding; }
     bool spacingDisabled() const { return m_disableSpacing; }
 
     void disableSpacing() { m_disableSpacing = true; }
     void disableRoundingHacks() { m_applyRunRounding = m_applyWordRounding = false; }
     void setDirection(TextDirection direction) { m_direction = direction; }
     void setDirectionalOverride(bool override) { m_directionalOverride = override; }
     void setCharacterScanForCodePath(bool scan) { m_characterScanForCodePath = scan; }
 
@@ skipping 32 matching lines @@
     ExpansionBehavior m_expansionBehavior : 2;
     unsigned m_is8Bit : 1;
     unsigned m_allowTabs : 1;
     unsigned m_direction : 1;
     unsigned m_directionalOverride : 1; // Was this direction set by an override character.
     unsigned m_characterScanForCodePath : 1;
     unsigned m_applyRunRounding : 1;
     unsigned m_applyWordRounding : 1;
     unsigned m_disableSpacing : 1;
     unsigned m_tabSize;
+    CodePath m_textCodePath;
     RefPtr<RenderingContext> m_renderingContext;
 };
 
 inline void TextRun::setTabSize(bool allow, unsigned size)
 {
     m_allowTabs = allow;
     m_tabSize = size;
 }
 
 // Container for parameters needed to paint TextRun.
 struct TextRunPaintInfo {
     explicit TextRunPaintInfo(const TextRun& r)
         : run(r)
         , from(0)
         , to(r.length())
     {
     }
 
     const TextRun& run;
     int from;
     int to;
     FloatRect bounds;
 };
 
 }
 #endif