1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
// Scintilla source code edit control
// Style.cxx - defines the font and colour style for a class of text
// Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <string.h>
#include "Platform.h"
#include "Scintilla.h"
#include "Style.h"
Style::Style() {
aliasOfDefaultFont = true;
Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
Platform::DefaultFontSize(), 0, SC_CHARSET_DEFAULT,
false, false, false, false);
}
Style::Style(const Style &source) {
Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
0, 0, 0,
false, false, false, false);
fore.desired = source.fore.desired;
back.desired = source.back.desired;
characterSet = source.characterSet;
bold = source.bold;
italic = source.italic;
size = source.size;
eolFilled = source.eolFilled;
underline = source.underline;
}
Style::~Style() {
if (aliasOfDefaultFont)
font.SetID(0);
else
font.Release();
aliasOfDefaultFont = false;
}
Style &Style::operator=(const Style &source) {
if (this == &source)
return *this;
Clear(Colour(0,0,0), Colour(0xff,0xff,0xff),
0, 0, SC_CHARSET_DEFAULT,
false, false, false, false);
fore.desired = source.fore.desired;
back.desired = source.back.desired;
characterSet = source.characterSet;
bold = source.bold;
italic = source.italic;
size = source.size;
eolFilled = source.eolFilled;
underline = source.underline;
return *this;
}
void Style::Clear(Colour fore_, Colour back_, int size_,
const char *fontName_, int characterSet_,
bool bold_, bool italic_, bool eolFilled_, bool underline_) {
fore.desired = fore_;
back.desired = back_;
characterSet = characterSet_;
bold = bold_;
italic = italic_;
size = size_;
fontName = fontName_;
eolFilled = eolFilled_;
underline = underline_;
if (aliasOfDefaultFont)
font.SetID(0);
else
font.Release();
aliasOfDefaultFont = false;
}
bool Style::EquivalentFontTo(const Style *other) const {
if (bold != other->bold ||
italic != other->italic ||
size != other->size ||
characterSet != other->characterSet)
return false;
if (fontName == other->fontName)
return true;
if (!fontName)
return false;
if (!other->fontName)
return false;
return strcmp(fontName, other->fontName) == 0;
}
void Style::Realise(Surface &surface, int zoomLevel, Style *defaultStyle) {
int sizeZoomed = size + zoomLevel;
if (sizeZoomed <= 2) // Hangs if sizeZoomed <= 1
sizeZoomed = 2;
if (aliasOfDefaultFont)
font.SetID(0);
else
font.Release();
int deviceHeight = surface.DeviceHeightFont(sizeZoomed);
aliasOfDefaultFont = defaultStyle &&
(EquivalentFontTo(defaultStyle) || !fontName);
if (aliasOfDefaultFont) {
font.SetID(defaultStyle->font.GetID());
} else if (fontName) {
font.Create(fontName, characterSet, deviceHeight, bold, italic);
} else {
font.SetID(0);
}
ascent = surface.Ascent(font);
descent = surface.Descent(font);
// Probably more typographically correct to include leading
// but that means more complex drawing as leading must be erased
//lineHeight = surface.ExternalLeading() + surface.Height();
externalLeading = surface.ExternalLeading(font);
lineHeight = surface.Height(font);
aveCharWidth = surface.AverageCharWidth(font);
spaceWidth = surface.WidthChar(font, ' ');
}
|
