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 <string.h>
   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() {
  23         SetID(0);
  24         // ~Font will not release the actual font resource since it is now 0
  25 }
  26
  27 void FontAlias::MakeAlias(Font &fontOrigin) {
  28         SetID(fontOrigin.GetID());
  29 }
  30
  31 void FontAlias::ClearFont() {
  32         SetID(0);
  33 }
  34
  35 bool FontSpecification::operator==(const FontSpecification &other) const {
  36         return fontName == other.fontName &&
  37                weight == other.weight &&
  38                italic == other.italic &&
  39                size == other.size &&
  40                characterSet == other.characterSet &&
  41                extraFontFlag == other.extraFontFlag;
  42 }
  43
  44 bool FontSpecification::operator<(const FontSpecification &other) const {
  45         if (fontName != other.fontName)
  46                 return fontName < other.fontName;
  47         if (weight != other.weight)
  48                 return weight < other.weight;
  49         if (italic != other.italic)
  50                 return italic == false;
  51         if (size != other.size)
  52                 return size < other.size;
  53         if (characterSet != other.characterSet)
  54                 return characterSet < other.characterSet;
  55         if (extraFontFlag != other.extraFontFlag)
  56                 return extraFontFlag < other.extraFontFlag;
  57         return false;
  58 }
  59
  60 FontMeasurements::FontMeasurements() {
  61         Clear();
  62 }
  63
  64 void FontMeasurements::Clear() {
  65         ascent = 1;
  66         descent = 1;
  67         aveCharWidth = 1;
  68         spaceWidth = 1;
  69         sizeZoomed = 2;
  70 }
  71
  72 Style::Style() : FontSpecification() {
  73         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  74               Platform::DefaultFontSize() * SC_FONT_SIZE_MULTIPLIER, 0, SC_CHARSET_DEFAULT,
  75               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  76 }
  77
  78 Style::Style(const Style &source) : FontSpecification(), FontMeasurements() {
  79         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  80               0, 0, 0,
  81               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  82         fore = source.fore;
  83         back = source.back;
  84         characterSet = source.characterSet;
  85         weight = source.weight;
  86         italic = source.italic;
  87         size = source.size;
  88         fontName = source.fontName;
  89         eolFilled = source.eolFilled;
  90         underline = source.underline;
  91         caseForce = source.caseForce;
  92         visible = source.visible;
  93         changeable = source.changeable;
  94         hotspot = source.hotspot;
  95 }
  96
  97 Style::~Style() {
  98 }
  99
 100 Style &Style::operator=(const Style &source) {
 101         if (this == &source)
 102                 return * this;
 103         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
 104               0, 0, SC_CHARSET_DEFAULT,
 105               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
 106         fore = source.fore;
 107         back = source.back;
 108         characterSet = source.characterSet;
 109         weight = source.weight;
 110         italic = source.italic;
 111         size = source.size;
 112         fontName = source.fontName;
 113         eolFilled = source.eolFilled;
 114         underline = source.underline;
 115         caseForce = source.caseForce;
 116         visible = source.visible;
 117         changeable = source.changeable;
 118         return *this;
 119 }
 120
 121 void Style::Clear(ColourDesired fore_, ColourDesired back_, int size_,
 122         const char *fontName_, int characterSet_,
 123         int weight_, bool italic_, bool eolFilled_,
 124         bool underline_, ecaseForced caseForce_,
 125         bool visible_, bool changeable_, bool hotspot_) {
 126         fore = fore_;
 127         back = back_;
 128         characterSet = characterSet_;
 129         weight = weight_;
 130         italic = italic_;
 131         size = size_;
 132         fontName = fontName_;
 133         eolFilled = eolFilled_;
 134         underline = underline_;
 135         caseForce = caseForce_;
 136         visible = visible_;
 137         changeable = changeable_;
 138         hotspot = hotspot_;
 139         font.ClearFont();
 140         FontMeasurements::Clear();
 141 }
 142
 143 void Style::ClearTo(const Style &source) {
 144         Clear(
 145             source.fore,
 146             source.back,
 147             source.size,
 148             source.fontName,
 149             source.characterSet,
 150             source.weight,
 151             source.italic,
 152             source.eolFilled,
 153             source.underline,
 154             source.caseForce,
 155             source.visible,
 156             source.changeable,
 157             source.hotspot);
 158 }
 159
 160 void Style::Copy(Font &font_, const FontMeasurements &fm_) {
 161         font.MakeAlias(font_);
 162 #if PLAT_WX
 163         font.SetAscent(fm_.ascent);
 164 #endif
 165         (FontMeasurements &)(*this) = fm_;
 166 }