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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
|
/*
* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
* its contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "SimpleFontData.h"
#include "FontCache.h"
#include "FloatRect.h"
#include "FontDescription.h"
#include <wtf/MathExtras.h>
#include <unicode/uchar.h>
#include <unicode/unorm.h>
#include <wx/defs.h>
#include <wx/dcscreen.h>
#include "fontprops.h"
namespace WebCore
{
void SimpleFontData::platformInit()
{
wxFont *font = m_platformData.font();
if (font && font->IsOk()) {
wxFontProperties props = wxFontProperties(font);
m_ascent = props.GetAscent();
m_descent = props.GetDescent();
m_lineSpacing = props.GetLineSpacing();
m_xHeight = props.GetXHeight();
m_unitsPerEm = 1; // FIXME!
m_lineGap = props.GetLineGap();
}
#if OS(WINDOWS)
m_scriptCache = 0;
m_scriptFontProperties = 0;
m_isSystemFont = false;
m_syntheticBoldOffset = 0.0f;
#endif
}
void SimpleFontData::platformCharWidthInit()
{
m_avgCharWidth = 0.f;
m_maxCharWidth = 0.f;
initCharWidths();
}
void SimpleFontData::platformDestroy()
{
delete m_smallCapsFontData;
m_smallCapsFontData = 0;
#if OS(WINDOWS)
if (m_scriptFontProperties) {
delete m_scriptFontProperties;
m_scriptFontProperties = 0;
}
if (m_scriptCache)
ScriptFreeCache(&m_scriptCache);
#endif
}
SimpleFontData* SimpleFontData::smallCapsFontData(const FontDescription& fontDescription) const
{
if (!m_smallCapsFontData){
FontDescription desc = FontDescription(fontDescription);
desc.setSpecifiedSize(0.70f*fontDescription.computedSize());
const FontPlatformData* pdata = new FontPlatformData(desc, desc.family().family());
m_smallCapsFontData = new SimpleFontData(*pdata);
}
return m_smallCapsFontData;
}
bool SimpleFontData::containsCharacters(const UChar* characters, int length) const
{
// FIXME: We will need to implement this to load non-ASCII encoding sites
return wxFontContainsCharacters(*m_platformData.font(), characters, length);
}
void SimpleFontData::determinePitch()
{
if (m_platformData.font() && m_platformData.font()->Ok())
m_treatAsFixedPitch = m_platformData.font()->IsFixedWidth();
else
m_treatAsFixedPitch = false;
}
float SimpleFontData::platformWidthForGlyph(Glyph glyph) const
{
#if __WXMSW__
// under Windows / wxMSW we currently always use GDI fonts.
return widthForGDIGlyph(glyph);
#else
// TODO: fix this! Make GetTextExtents a method of wxFont in 2.9
int width = 10;
GetTextExtent(*m_platformData.font(), (wxChar)glyph, &width, NULL);
return width;
#endif
}
#if OS(WINDOWS)
SCRIPT_FONTPROPERTIES* SimpleFontData::scriptFontProperties() const
{
// AFAICT this is never called even by the Win port anymore.
return 0;
}
void SimpleFontData::initGDIFont()
{
// unused by wx port
}
void SimpleFontData::platformCommonDestroy()
{
// unused by wx port
}
float SimpleFontData::widthForGDIGlyph(Glyph glyph) const
{
HDC hdc = GetDC(0);
HGDIOBJ oldFont = SelectObject(hdc, m_platformData.hfont());
int width;
GetCharWidthI(hdc, glyph, 1, 0, &width);
SelectObject(hdc, oldFont);
ReleaseDC(0, hdc);
return width;
}
#endif
}
|
