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
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
#include "fx_fpf.h"
#if _FX_OS_ == _FX_ANDROID_
#include "fpf_skiafont.h"
#include "fpf_skiafontmgr.h"
#define FPF_EM_ADJUST(em, a) (em == 0 ? (a) : (a) * 1000 / em)
CFPF_SkiaFont::CFPF_SkiaFont()
: m_pFontMgr(NULL)
, m_pFontDes(NULL)
, m_Face(NULL)
, m_dwStyle(0)
, m_uCharset(0)
, m_dwRefCount(0)
{
}
CFPF_SkiaFont::~CFPF_SkiaFont()
{
if (m_Face) {
FXFT_Done_Face(m_Face);
}
}
void CFPF_SkiaFont::Release()
{
if (--m_dwRefCount == 0) {
delete this;
}
}
IFPF_Font* CFPF_SkiaFont::Retain()
{
m_dwRefCount++;
return (IFPF_Font*)this;
}
FPF_HFONT CFPF_SkiaFont::GetHandle()
{
return NULL;
}
CFX_ByteString CFPF_SkiaFont::GetFamilyName()
{
if (!m_Face) {
return CFX_ByteString();
}
return CFX_ByteString(FXFT_Get_Face_Family_Name(m_Face));
}
CFX_WideString CFPF_SkiaFont::GetPsName()
{
if (!m_Face) {
return CFX_WideString();
}
return CFX_WideString::FromLocal(FXFT_Get_Postscript_Name(m_Face));
}
int32_t CFPF_SkiaFont::GetGlyphIndex(FX_WCHAR wUnicode)
{
if (!m_Face) {
return wUnicode;
}
if (FXFT_Select_Charmap(m_Face, FXFT_ENCODING_UNICODE)) {
return 0;
}
return FXFT_Get_Char_Index(m_Face, wUnicode);
}
int32_t CFPF_SkiaFont::GetGlyphWidth(int32_t iGlyphIndex)
{
if (!m_Face) {
return 0;
}
if (FXFT_Load_Glyph(m_Face, iGlyphIndex, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
return 0;
}
return FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriAdvance(m_Face));
}
int32_t CFPF_SkiaFont::GetAscent() const
{
if (!m_Face) {
return 0;
}
return FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Ascender(m_Face));
}
int32_t CFPF_SkiaFont::GetDescent() const
{
if (!m_Face) {
return 0;
}
return FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Descender(m_Face));
}
FX_BOOL CFPF_SkiaFont::GetGlyphBBox(int32_t iGlyphIndex, FX_RECT &rtBBox)
{
if (!m_Face) {
return FALSE;
}
if (FXFT_Is_Face_Tricky(m_Face)) {
if (FXFT_Set_Char_Size(m_Face, 0, 1000 * 64, 72, 72)) {
return FALSE;
}
if (FXFT_Load_Glyph(m_Face, iGlyphIndex, FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
return FALSE;
}
FXFT_Glyph glyph;
if (FXFT_Get_Glyph(m_Face->glyph, &glyph)) {
FXFT_Set_Pixel_Sizes(m_Face, 0, 64);
return FALSE;
}
FXFT_BBox cbox;
FXFT_Glyph_Get_CBox(glyph, FXFT_GLYPH_BBOX_PIXELS, &cbox);
int32_t x_ppem = m_Face->size->metrics.x_ppem;
int32_t y_ppem = m_Face->size->metrics.y_ppem;
rtBBox.left = FPF_EM_ADJUST(x_ppem, cbox.xMin);
rtBBox.right = FPF_EM_ADJUST(x_ppem, cbox.xMax);
rtBBox.top = FPF_EM_ADJUST(y_ppem, cbox.yMax);
rtBBox.bottom = FPF_EM_ADJUST(y_ppem, cbox.yMin);
rtBBox.top = FX_MIN(rtBBox.top, GetAscent());
rtBBox.bottom = FX_MAX(rtBBox.bottom, GetDescent());
FXFT_Done_Glyph(glyph);
return FXFT_Set_Pixel_Sizes(m_Face, 0, 64) == 0;
}
if (FXFT_Load_Glyph(m_Face, iGlyphIndex, FXFT_LOAD_NO_SCALE | FXFT_LOAD_IGNORE_GLOBAL_ADVANCE_WIDTH)) {
return FALSE;
}
rtBBox.left = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriBearingX(m_Face));
rtBBox.bottom = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriBearingY(m_Face));
rtBBox.right = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriBearingX(m_Face) + FXFT_Get_Glyph_Width(m_Face));
rtBBox.top = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Glyph_HoriBearingY(m_Face) - FXFT_Get_Glyph_Height(m_Face));
return TRUE;
}
FX_BOOL CFPF_SkiaFont::GetBBox(FX_RECT &rtBBox)
{
if (!m_Face) {
return FALSE;
}
rtBBox.left = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_xMin(m_Face));
rtBBox.top = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_yMin(m_Face));
rtBBox.right = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_xMax(m_Face));
rtBBox.bottom = FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_yMax(m_Face));
return TRUE;
}
int32_t CFPF_SkiaFont::GetHeight() const
{
if (!m_Face) {
return 0;
}
return FPF_EM_ADJUST(FXFT_Get_Face_UnitsPerEM(m_Face), FXFT_Get_Face_Height(m_Face));
}
int32_t CFPF_SkiaFont::GetItalicAngle() const
{
if (!m_Face) {
return 0;
}
TT_Postscript *ttInfo = (TT_Postscript*)FT_Get_Sfnt_Table(m_Face, ft_sfnt_post);
if (ttInfo) {
return ttInfo->italicAngle;
}
return 0;
}
FX_DWORD CFPF_SkiaFont::GetFontData(FX_DWORD dwTable, uint8_t* pBuffer, FX_DWORD dwSize)
{
if (!m_Face) {
return FALSE;
}
if (FXFT_Load_Sfnt_Table(m_Face, dwTable, 0, pBuffer, (unsigned long*)&dwSize)) {
return 0;
}
return dwSize;
}
FX_BOOL CFPF_SkiaFont::InitFont(CFPF_SkiaFontMgr *pFontMgr, CFPF_SkiaFontDescriptor *pFontDes, const CFX_ByteStringC& bsFamily, FX_DWORD dwStyle, uint8_t uCharset)
{
if (!pFontMgr || !pFontDes) {
return FALSE;
}
switch (pFontDes->GetType()) {
case FPF_SKIAFONTTYPE_Path: {
CFPF_SkiaPathFont *pFont = (CFPF_SkiaPathFont*)pFontDes;
m_Face = pFontMgr->GetFontFace(pFont->m_pPath, pFont->m_iFaceIndex);
}
break;
case FPF_SKIAFONTTYPE_File: {
CFPF_SkiaFileFont *pFont = (CFPF_SkiaFileFont*)pFontDes;
m_Face = pFontMgr->GetFontFace(pFont->m_pFile, pFont->m_iFaceIndex);
}
break;
case FPF_SKIAFONTTYPE_Buffer: {
CFPF_SkiaBufferFont *pFont = (CFPF_SkiaBufferFont*)pFontDes;
m_Face = pFontMgr->GetFontFace((const uint8_t*)pFont->m_pBuffer, pFont->m_szBuffer, pFont->m_iFaceIndex);
}
break;
default:
return FALSE;
}
if (!m_Face) {
return FALSE;
}
m_dwStyle = dwStyle;
m_uCharset = uCharset;
m_pFontMgr = pFontMgr;
m_pFontDes = pFontDes;
m_dwRefCount = 1;
return TRUE;
}
#endif
|
