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
|
// Copyright 2016 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 "core/fpdfapi/render/cpdf_textrenderer.h"
#include <algorithm>
#include "core/fpdfapi/font/cpdf_font.h"
#include "core/fpdfapi/render/cpdf_charposlist.h"
#include "core/fpdfapi/render/cpdf_renderoptions.h"
#include "core/fxge/cfx_graphstatedata.h"
#include "core/fxge/cfx_pathdata.h"
#include "core/fxge/cfx_renderdevice.h"
namespace {
CFX_Font* GetFont(CPDF_Font* pFont, int32_t position) {
return position == -1 ? pFont->GetFont() : pFont->GetFontFallback(position);
}
} // namespace
// static
bool CPDF_TextRenderer::DrawTextPath(CFX_RenderDevice* pDevice,
const std::vector<uint32_t>& charCodes,
const std::vector<float>& charPos,
CPDF_Font* pFont,
float font_size,
const CFX_Matrix* pText2User,
const CFX_Matrix* pUser2Device,
const CFX_GraphStateData* pGraphState,
FX_ARGB fill_argb,
FX_ARGB stroke_argb,
CFX_PathData* pClippingPath,
int nFlag) {
CPDF_CharPosList CharPosList;
CharPosList.Load(charCodes, charPos, pFont, font_size);
if (CharPosList.m_nChars == 0)
return true;
bool bDraw = true;
int32_t fontPosition = CharPosList.m_pCharPos[0].m_FallbackFontPosition;
uint32_t startIndex = 0;
for (uint32_t i = 0; i < CharPosList.m_nChars; i++) {
int32_t curFontPosition = CharPosList.m_pCharPos[i].m_FallbackFontPosition;
if (fontPosition == curFontPosition)
continue;
CFX_Font* font = GetFont(pFont, fontPosition);
if (!pDevice->DrawTextPath(i - startIndex,
CharPosList.m_pCharPos + startIndex, font,
font_size, pText2User, pUser2Device, pGraphState,
fill_argb, stroke_argb, pClippingPath, nFlag)) {
bDraw = false;
}
fontPosition = curFontPosition;
startIndex = i;
}
CFX_Font* font = GetFont(pFont, fontPosition);
if (!pDevice->DrawTextPath(CharPosList.m_nChars - startIndex,
CharPosList.m_pCharPos + startIndex, font,
font_size, pText2User, pUser2Device, pGraphState,
fill_argb, stroke_argb, pClippingPath, nFlag)) {
bDraw = false;
}
return bDraw;
}
// static
void CPDF_TextRenderer::DrawTextString(CFX_RenderDevice* pDevice,
float origin_x,
float origin_y,
CPDF_Font* pFont,
float font_size,
const CFX_Matrix* pMatrix,
const CFX_ByteString& str,
FX_ARGB fill_argb,
const CFX_GraphStateData* pGraphState,
const CPDF_RenderOptions* pOptions) {
if (pFont->IsType3Font())
return;
int nChars = pFont->CountChar(str.c_str(), str.GetLength());
if (nChars <= 0)
return;
int offset = 0;
std::vector<uint32_t> codes;
std::vector<float> positions;
codes.resize(nChars);
positions.resize(nChars - 1);
float cur_pos = 0;
for (int i = 0; i < nChars; i++) {
codes[i] = pFont->GetNextChar(str.c_str(), str.GetLength(), offset);
if (i)
positions[i - 1] = cur_pos;
cur_pos += pFont->GetCharWidthF(codes[i]) * font_size / 1000;
}
CFX_Matrix matrix;
if (pMatrix)
matrix = *pMatrix;
matrix.e = origin_x;
matrix.f = origin_y;
DrawNormalText(pDevice, codes, positions, pFont, font_size, &matrix,
fill_argb, pOptions);
}
// static
bool CPDF_TextRenderer::DrawNormalText(CFX_RenderDevice* pDevice,
const std::vector<uint32_t>& charCodes,
const std::vector<float>& charPos,
CPDF_Font* pFont,
float font_size,
const CFX_Matrix* pText2Device,
FX_ARGB fill_argb,
const CPDF_RenderOptions* pOptions) {
CPDF_CharPosList CharPosList;
CharPosList.Load(charCodes, charPos, pFont, font_size);
if (CharPosList.m_nChars == 0)
return true;
int FXGE_flags = 0;
if (pOptions) {
uint32_t dwFlags = pOptions->m_Flags;
if (dwFlags & RENDER_CLEARTYPE) {
FXGE_flags |= FXTEXT_CLEARTYPE;
if (dwFlags & RENDER_BGR_STRIPE)
FXGE_flags |= FXTEXT_BGR_STRIPE;
}
if (dwFlags & RENDER_NOTEXTSMOOTH)
FXGE_flags |= FXTEXT_NOSMOOTH;
if (dwFlags & RENDER_PRINTGRAPHICTEXT)
FXGE_flags |= FXTEXT_PRINTGRAPHICTEXT;
if (dwFlags & RENDER_NO_NATIVETEXT)
FXGE_flags |= FXTEXT_NO_NATIVETEXT;
if (dwFlags & RENDER_PRINTIMAGETEXT)
FXGE_flags |= FXTEXT_PRINTIMAGETEXT;
} else {
FXGE_flags = FXTEXT_CLEARTYPE;
}
if (pFont->IsCIDFont())
FXGE_flags |= FXFONT_CIDFONT;
bool bDraw = true;
int32_t fontPosition = CharPosList.m_pCharPos[0].m_FallbackFontPosition;
uint32_t startIndex = 0;
for (uint32_t i = 0; i < CharPosList.m_nChars; i++) {
int32_t curFontPosition = CharPosList.m_pCharPos[i].m_FallbackFontPosition;
if (fontPosition == curFontPosition)
continue;
CFX_Font* font = GetFont(pFont, fontPosition);
if (!pDevice->DrawNormalText(
i - startIndex, CharPosList.m_pCharPos + startIndex, font,
font_size, pText2Device, fill_argb, FXGE_flags)) {
bDraw = false;
}
fontPosition = curFontPosition;
startIndex = i;
}
CFX_Font* font = GetFont(pFont, fontPosition);
if (!pDevice->DrawNormalText(CharPosList.m_nChars - startIndex,
CharPosList.m_pCharPos + startIndex, font,
font_size, pText2Device, fill_argb,
FXGE_flags)) {
bDraw = false;
}
return bDraw;
}
|
