ext/scintilla/src/Style.cxx

   1 // Scintilla source code edit control
   2 /** @file Style.cxx
   3  ** Defines the font and colour style for a class of text.
   4  **/
   5 // Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
   6 // The License.txt file describes the conditions under which this software may be distributed.
   7
   8 #include <stdexcept>
   9
  10 #include "Platform.h"
  11
  12 #include "Scintilla.h"
  13 #include "Style.h"
  14
  15 #ifdef SCI_NAMESPACE
  16 using namespace Scintilla;
  17 #endif
  18
  19 FontAlias::FontAlias() {
  20 }
  21
  22 FontAlias::FontAlias(const FontAlias &other) : Font() {
  23         SetID(other.fid);
  24 }
  25
  26 FontAlias::~FontAlias() {
  27         SetID(0);
  28         // ~Font will not release the actual font resource since it is now 0
  29 }
  30
  31 void FontAlias::MakeAlias(Font &fontOrigin) {
  32         SetID(fontOrigin.GetID());
  33 }
  34
  35 void FontAlias::ClearFont() {
  36         SetID(0);
  37 }
  38
  39 bool FontSpecification::operator==(const FontSpecification &other) const {
  40         return fontName == other.fontName &&
  41                weight == other.weight &&
  42                italic == other.italic &&
  43                size == other.size &&
  44                characterSet == other.characterSet &&
  45                extraFontFlag == other.extraFontFlag;
  46 }
  47
  48 bool FontSpecification::operator<(const FontSpecification &other) const {
  49         if (fontName != other.fontName)
  50                 return fontName < other.fontName;
  51         if (weight != other.weight)
  52                 return weight < other.weight;
  53         if (italic != other.italic)
  54                 return italic == false;
  55         if (size != other.size)
  56                 return size < other.size;
  57         if (characterSet != other.characterSet)
  58                 return characterSet < other.characterSet;
  59         if (extraFontFlag != other.extraFontFlag)
  60                 return extraFontFlag < other.extraFontFlag;
  61         return false;
  62 }
  63
  64 FontMeasurements::FontMeasurements() {
  65         Clear();
  66 }
  67
  68 void FontMeasurements::Clear() {
  69         ascent = 1;
  70         descent = 1;
  71         capitalHeight = 1;
  72         aveCharWidth = 1;
  73         spaceWidth = 1;
  74         sizeZoomed = 2;
  75 }
  76
  77 Style::Style() : FontSpecification() {
  78         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  79               Platform::DefaultFontSize() * SC_FONT_SIZE_MULTIPLIER, 0, SC_CHARSET_DEFAULT,
  80               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  81 }
  82
  83 Style::Style(const Style &source) : FontSpecification(), FontMeasurements() {
  84         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  85               0, 0, 0,
  86               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  87         fore = source.fore;
  88         back = source.back;
  89         characterSet = source.characterSet;
  90         weight = source.weight;
  91         italic = source.italic;
  92         size = source.size;
  93         fontName = source.fontName;
  94         eolFilled = source.eolFilled;
  95         underline = source.underline;
  96         caseForce = source.caseForce;
  97         visible = source.visible;
  98         changeable = source.changeable;
  99         hotspot = source.hotspot;
 100 }
 101
 102 Style::~Style() {
 103 }
 104
 105 Style &Style::operator=(const Style &source) {
 106         if (this == &source)
 107                 return * this;
 108         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
 109               0, 0, SC_CHARSET_DEFAULT,
 110               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
 111         fore = source.fore;
 112         back = source.back;
 113         characterSet = source.characterSet;
 114         weight = source.weight;
 115         italic = source.italic;
 116         size = source.size;
 117         fontName = source.fontName;
 118         eolFilled = source.eolFilled;
 119         underline = source.underline;
 120         caseForce = source.caseForce;
 121         visible = source.visible;
 122         changeable = source.changeable;
 123         return *this;
 124 }
 125
 126 void Style::Clear(ColourDesired fore_, ColourDesired back_, int size_,
 127         const char *fontName_, int characterSet_,
 128         int weight_, bool italic_, bool eolFilled_,
 129         bool underline_, ecaseForced caseForce_,
 130         bool visible_, bool changeable_, bool hotspot_) {
 131         fore = fore_;
 132         back = back_;
 133         characterSet = characterSet_;
 134         weight = weight_;
 135         italic = italic_;
 136         size = size_;
 137         fontName = fontName_;
 138         eolFilled = eolFilled_;
 139         underline = underline_;
 140         caseForce = caseForce_;
 141         visible = visible_;
 142         changeable = changeable_;
 143         hotspot = hotspot_;
 144         font.ClearFont();
 145         FontMeasurements::Clear();
 146 }
 147
 148 void Style::ClearTo(const Style &source) {
 149         Clear(
 150             source.fore,
 151             source.back,
 152             source.size,
 153             source.fontName,
 154             source.characterSet,
 155             source.weight,
 156             source.italic,
 157             source.eolFilled,
 158             source.underline,
 159             source.caseForce,
 160             source.visible,
 161             source.changeable,
 162             source.hotspot);
 163 }
 164
 165 void Style::Copy(Font &font_, const FontMeasurements &fm_) {
 166         font.MakeAlias(font_);
 167         (FontMeasurements &)(*this) = fm_;
 168 }