WebCore/TextRun.h

   1 /*
   2  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2000 Dirk Mueller (mueller@kde.org)
   5  * Copyright (C) 2003, 2006, 2007 Apple Computer, Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #ifndef TextRun_h
  25 #define TextRun_h
  26
  27 #include "PlatformString.h"
  28
  29 namespace WebCore {
  30
  31 class RenderObject;
  32 class SVGPaintServer;
  33
  34 class TextRun {
  35 public:
  36     TextRun(const UChar* c, int len, bool allowTabs = false, int xpos = 0, int padding = 0, bool rtl = false, bool directionalOverride = false,
  37               bool applyRunRounding = true, bool applyWordRounding = true)
  38         : m_characters(c)
  39         , m_len(len)
  40         , m_xpos(xpos)
  41         , m_padding(padding)
  42         , m_allowTabs(allowTabs)
  43         , m_rtl(rtl)
  44         , m_directionalOverride(directionalOverride)
  45         , m_applyRunRounding(applyRunRounding)
  46         , m_applyWordRounding(applyWordRounding)
  47         , m_disableSpacing(false)
  48 #if ENABLE(SVG_FONTS)
  49         , m_referencingRenderObject(0)
  50         , m_activePaintServer(0)
  51 #endif
  52     {
  53     }
  54
  55     TextRun(const String& s, bool allowTabs = false, int xpos = 0, int padding = 0, bool rtl = false, bool directionalOverride = false,
  56               bool applyRunRounding = true, bool applyWordRounding = true)
  57         : m_characters(s.characters())
  58         , m_len(s.length())
  59         , m_xpos(xpos)
  60         , m_padding(padding)
  61         , m_allowTabs(allowTabs)
  62         , m_rtl(rtl)
  63         , m_directionalOverride(directionalOverride)
  64         , m_applyRunRounding(applyRunRounding)
  65         , m_applyWordRounding(applyWordRounding)
  66         , m_disableSpacing(false)
  67 #if ENABLE(SVG_FONTS)
  68         , m_referencingRenderObject(0)
  69         , m_activePaintServer(0)
  70 #endif
  71     {
  72     }
  73
  74     UChar operator[](int i) const { return m_characters[i]; }
  75     const UChar* data(int i) const { return &m_characters[i]; }
  76
  77     const UChar* characters() const { return m_characters; }
  78     int length() const { return m_len; }
  79
  80     void setText(const UChar* c, int len) { m_characters = c; m_len = len; }
  81
  82     bool allowTabs() const { return m_allowTabs; }
  83     int xPos() const { return m_xpos; }
  84     int padding() const { return m_padding; }
  85     bool rtl() const { return m_rtl; }
  86     bool ltr() const { return !m_rtl; }
  87     bool directionalOverride() const { return m_directionalOverride; }
  88     bool applyRunRounding() const { return m_applyRunRounding; }
  89     bool applyWordRounding() const { return m_applyWordRounding; }
  90     bool spacingDisabled() const { return m_disableSpacing; }
  91
  92     void disableSpacing() { m_disableSpacing = true; }
  93     void disableRoundingHacks() { m_applyRunRounding = m_applyWordRounding = false; }
  94     void setRTL(bool b) { m_rtl = b; }
  95     void setDirectionalOverride(bool override) { m_directionalOverride = override; }
  96
  97 #if ENABLE(SVG_FONTS)
  98     RenderObject* referencingRenderObject() const { return m_referencingRenderObject; }
  99     void setReferencingRenderObject(RenderObject* object) { m_referencingRenderObject = object; }
 100
 101     SVGPaintServer* activePaintServer() const { return m_activePaintServer; }
 102     void setActivePaintServer(SVGPaintServer* object) { m_activePaintServer = object; }
 103 #endif
 104
 105 private:
 106     const UChar* m_characters;
 107     int m_len;
 108
 109     int m_xpos;
 110     int m_padding;
 111     bool m_allowTabs;
 112     bool m_rtl;
 113     bool m_directionalOverride;
 114     bool m_applyRunRounding;
 115     bool m_applyWordRounding;
 116     bool m_disableSpacing;
 117
 118 #if ENABLE(SVG_FONTS)
 119     RenderObject* m_referencingRenderObject;
 120     SVGPaintServer* m_activePaintServer;
 121 #endif
 122 };
 123
 124 }
 125
 126 #endif