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 sine 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::EqualTo(const FontSpecification &other) const {
  36         return weight == other.weight &&
  37                italic == other.italic &&
  38                size == other.size &&
  39                characterSet == other.characterSet &&
  40                fontName == other.fontName;
  41 }
  42
  43 FontMeasurements::FontMeasurements() {
  44         Clear();
  45 }
  46
  47 void FontMeasurements::Clear() {
  48         ascent = 1;
  49         descent = 1;
  50         aveCharWidth = 1;
  51         spaceWidth = 1;
  52         sizeZoomed = 2;
  53 }
  54
  55 Style::Style() : FontSpecification() {
  56         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  57               Platform::DefaultFontSize() * SC_FONT_SIZE_MULTIPLIER, 0, SC_CHARSET_DEFAULT,
  58               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  59 }
  60
  61 Style::Style(const Style &source) : FontSpecification(), FontMeasurements() {
  62         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  63               0, 0, 0,
  64               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  65         fore = source.fore;
  66         back = source.back;
  67         characterSet = source.characterSet;
  68         weight = source.weight;
  69         italic = source.italic;
  70         size = source.size;
  71         eolFilled = source.eolFilled;
  72         underline = source.underline;
  73         caseForce = source.caseForce;
  74         visible = source.visible;
  75         changeable = source.changeable;
  76         hotspot = source.hotspot;
  77 }
  78
  79 Style::~Style() {
  80 }
  81
  82 Style &Style::operator=(const Style &source) {
  83         if (this == &source)
  84                 return * this;
  85         Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
  86               0, 0, SC_CHARSET_DEFAULT,
  87               SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
  88         fore = source.fore;
  89         back = source.back;
  90         characterSet = source.characterSet;
  91         weight = source.weight;
  92         italic = source.italic;
  93         size = source.size;
  94         eolFilled = source.eolFilled;
  95         underline = source.underline;
  96         caseForce = source.caseForce;
  97         visible = source.visible;
  98         changeable = source.changeable;
  99         return *this;
 100 }
 101
 102 void Style::Clear(ColourDesired fore_, ColourDesired back_, int size_,
 103         const char *fontName_, int characterSet_,
 104         int weight_, bool italic_, bool eolFilled_,
 105         bool underline_, ecaseForced caseForce_,
 106         bool visible_, bool changeable_, bool hotspot_) {
 107         fore = fore_;
 108         back = back_;
 109         characterSet = characterSet_;
 110         weight = weight_;
 111         italic = italic_;
 112         size = size_;
 113         fontName = fontName_;
 114         eolFilled = eolFilled_;
 115         underline = underline_;
 116         caseForce = caseForce_;
 117         visible = visible_;
 118         changeable = changeable_;
 119         hotspot = hotspot_;
 120         font.ClearFont();
 121         FontMeasurements::Clear();
 122 }
 123
 124 void Style::ClearTo(const Style &source) {
 125         Clear(
 126             source.fore,
 127             source.back,
 128             source.size,
 129             source.fontName,
 130             source.characterSet,
 131             source.weight,
 132             source.italic,
 133             source.eolFilled,
 134             source.underline,
 135             source.caseForce,
 136             source.visible,
 137             source.changeable,
 138             source.hotspot);
 139 }
 140
 141 void Style::Copy(Font &font_, const FontMeasurements &fm_) {
 142         font.MakeAlias(font_);
 143 #if PLAT_WX
 144         font.SetAscent(fm_.ascent);
 145 #endif
 146         (FontMeasurements &)(*this) = fm_;
 147 }