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 #include <vector>
10 #include <memory>
11
12 #include "Platform.h"
13
14 #include "Scintilla.h"
15 #include "Style.h"
16
17 using namespace Scintilla;
18
FontAlias()19 FontAlias::FontAlias() noexcept {
20 }
21
FontAlias(const FontAlias & other)22 FontAlias::FontAlias(const FontAlias &other) noexcept : Font() {
23 SetID(other.fid);
24 }
25
~FontAlias()26 FontAlias::~FontAlias() {
27 SetID(FontID{});
28 // ~Font will not release the actual font resource since it is now 0
29 }
30
MakeAlias(const Font & fontOrigin)31 void FontAlias::MakeAlias(const Font &fontOrigin) noexcept {
32 SetID(fontOrigin.GetID());
33 }
34
ClearFont()35 void FontAlias::ClearFont() noexcept {
36 SetID(FontID{});
37 }
38
operator ==(const FontSpecification & other) const39 bool FontSpecification::operator==(const FontSpecification &other) const noexcept {
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
operator <(const FontSpecification & other) const48 bool FontSpecification::operator<(const FontSpecification &other) const noexcept {
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
FontMeasurements()64 FontMeasurements::FontMeasurements() noexcept {
65 ClearMeasurements();
66 }
67
ClearMeasurements()68 void FontMeasurements::ClearMeasurements() noexcept {
69 ascent = 1;
70 descent = 1;
71 capitalHeight = 1;
72 aveCharWidth = 1;
73 spaceWidth = 1;
74 sizeZoomed = 2;
75 }
76
Style()77 Style::Style() : FontSpecification() {
78 Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
79 Platform::DefaultFontSize() * SC_FONT_SIZE_MULTIPLIER, nullptr, SC_CHARSET_DEFAULT,
80 SC_WEIGHT_NORMAL, false, false, false, caseMixed, true, true, false);
81 }
82
Style(const Style & source)83 Style::Style(const Style &source) : FontSpecification(), FontMeasurements() {
84 Clear(ColourDesired(0, 0, 0), ColourDesired(0xff, 0xff, 0xff),
85 0, nullptr, 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
~Style()102 Style::~Style() {
103 }
104
operator =(const Style & source)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, nullptr, 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
Clear(ColourDesired fore_,ColourDesired back_,int size_,const char * fontName_,int characterSet_,int weight_,bool italic_,bool eolFilled_,bool underline_,ecaseForced caseForce_,bool visible_,bool changeable_,bool hotspot_)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::ClearMeasurements();
146 }
147
ClearTo(const Style & source)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
Copy(Font & font_,const FontMeasurements & fm_)165 void Style::Copy(Font &font_, const FontMeasurements &fm_) {
166 font.MakeAlias(font_);
167 (FontMeasurements &)(*this) = fm_;
168 }
169