1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "core/fxge/win32/cfx_psrenderer.h"
8
9 #include <memory>
10 #include <sstream>
11
12 #include "core/fpdfapi/cpdf_modulemgr.h"
13 #include "core/fxcodec/codec/ccodec_basicmodule.h"
14 #include "core/fxcodec/codec/ccodec_faxmodule.h"
15 #include "core/fxcodec/codec/ccodec_flatemodule.h"
16 #include "core/fxcodec/codec/ccodec_jpegmodule.h"
17 #include "core/fxcodec/fx_codec.h"
18 #include "core/fxcrt/maybe_owned.h"
19 #include "core/fxge/cfx_facecache.h"
20 #include "core/fxge/cfx_fontcache.h"
21 #include "core/fxge/cfx_gemodule.h"
22 #include "core/fxge/cfx_pathdata.h"
23 #include "core/fxge/cfx_renderdevice.h"
24 #include "core/fxge/dib/cfx_dibextractor.h"
25 #include "core/fxge/win32/cpsoutput.h"
26 #include "third_party/base/ptr_util.h"
27
28 namespace {
29
FaxCompressData(uint8_t * src_buf,int width,int height,std::unique_ptr<uint8_t,FxFreeDeleter> * dest_buf,uint32_t * dest_size)30 void FaxCompressData(uint8_t* src_buf,
31 int width,
32 int height,
33 std::unique_ptr<uint8_t, FxFreeDeleter>* dest_buf,
34 uint32_t* dest_size) {
35 if (width * height > 128) {
36 CCodec_FaxModule::FaxEncode(src_buf, width, height, (width + 7) / 8,
37 dest_buf, dest_size);
38 FX_Free(src_buf);
39 } else {
40 dest_buf->reset(src_buf);
41 *dest_size = (width + 7) / 8 * height;
42 }
43 }
44
PSCompressData(int PSLevel,uint8_t * src_buf,uint32_t src_size,uint8_t ** output_buf,uint32_t * output_size,const char ** filter)45 void PSCompressData(int PSLevel,
46 uint8_t* src_buf,
47 uint32_t src_size,
48 uint8_t** output_buf,
49 uint32_t* output_size,
50 const char** filter) {
51 *output_buf = src_buf;
52 *output_size = src_size;
53 *filter = "";
54 if (src_size < 1024)
55 return;
56
57 CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
58 uint8_t* dest_buf = nullptr;
59 uint32_t dest_size = src_size;
60 if (PSLevel >= 3) {
61 if (pEncoders->GetFlateModule()->Encode(src_buf, src_size, &dest_buf,
62 &dest_size)) {
63 *filter = "/FlateDecode filter ";
64 }
65 } else {
66 if (pEncoders->GetBasicModule()->RunLengthEncode(src_buf, src_size,
67 &dest_buf, &dest_size)) {
68 *filter = "/RunLengthDecode filter ";
69 }
70 }
71 if (dest_size < src_size) {
72 *output_buf = dest_buf;
73 *output_size = dest_size;
74 } else {
75 *filter = nullptr;
76 FX_Free(dest_buf);
77 }
78 }
79
80 } // namespace
81
82 struct PSGlyph {
83 UnownedPtr<CFX_Font> m_pFont;
84 uint32_t m_GlyphIndex;
85 bool m_bGlyphAdjust;
86 float m_AdjustMatrix[4];
87 };
88
89 class CPSFont {
90 public:
91 PSGlyph m_Glyphs[256];
92 int m_nGlyphs;
93 };
94
CFX_PSRenderer()95 CFX_PSRenderer::CFX_PSRenderer()
96 : m_pStream(nullptr),
97 m_bGraphStateSet(false),
98 m_bColorSet(false),
99 m_bInited(false) {}
100
~CFX_PSRenderer()101 CFX_PSRenderer::~CFX_PSRenderer() {}
102
Init(const RetainPtr<IFX_WriteStream> & pStream,int pslevel,int width,int height,bool bCmykOutput)103 void CFX_PSRenderer::Init(const RetainPtr<IFX_WriteStream>& pStream,
104 int pslevel,
105 int width,
106 int height,
107 bool bCmykOutput) {
108 m_PSLevel = pslevel;
109 m_pStream = pStream;
110 m_ClipBox.left = 0;
111 m_ClipBox.top = 0;
112 m_ClipBox.right = width;
113 m_ClipBox.bottom = height;
114 m_bCmykOutput = bCmykOutput;
115 }
116
StartRendering()117 bool CFX_PSRenderer::StartRendering() {
118 if (m_bInited)
119 return true;
120
121 static const char init_str[] =
122 "\nsave\n/im/initmatrix load def\n"
123 "/n/newpath load def/m/moveto load def/l/lineto load def/c/curveto load "
124 "def/h/closepath load def\n"
125 "/f/fill load def/F/eofill load def/s/stroke load def/W/clip load "
126 "def/W*/eoclip load def\n"
127 "/rg/setrgbcolor load def/k/setcmykcolor load def\n"
128 "/J/setlinecap load def/j/setlinejoin load def/w/setlinewidth load "
129 "def/M/setmiterlimit load def/d/setdash load def\n"
130 "/q/gsave load def/Q/grestore load def/iM/imagemask load def\n"
131 "/Tj/show load def/Ff/findfont load def/Fs/scalefont load def/Sf/setfont "
132 "load def\n"
133 "/cm/concat load def/Cm/currentmatrix load def/mx/matrix load "
134 "def/sm/setmatrix load def\n";
135 m_pStream->WriteString(init_str);
136 m_bInited = true;
137 return true;
138 }
139
EndRendering()140 void CFX_PSRenderer::EndRendering() {
141 if (!m_bInited)
142 return;
143
144 m_pStream->WriteString("\nrestore\n");
145 m_bInited = false;
146 }
147
SaveState()148 void CFX_PSRenderer::SaveState() {
149 StartRendering();
150 m_pStream->WriteString("q\n");
151 m_ClipBoxStack.push_back(m_ClipBox);
152 }
153
RestoreState(bool bKeepSaved)154 void CFX_PSRenderer::RestoreState(bool bKeepSaved) {
155 StartRendering();
156 m_pStream->WriteString("Q\n");
157 if (bKeepSaved)
158 m_pStream->WriteString("q\n");
159
160 m_bColorSet = false;
161 m_bGraphStateSet = false;
162 if (m_ClipBoxStack.empty())
163 return;
164
165 m_ClipBox = m_ClipBoxStack.back();
166 if (!bKeepSaved)
167 m_ClipBoxStack.pop_back();
168 }
169
OutputPath(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device)170 void CFX_PSRenderer::OutputPath(const CFX_PathData* pPathData,
171 const CFX_Matrix* pObject2Device) {
172 std::ostringstream buf;
173 size_t size = pPathData->GetPoints().size();
174
175 for (size_t i = 0; i < size; i++) {
176 FXPT_TYPE type = pPathData->GetType(i);
177 bool closing = pPathData->IsClosingFigure(i);
178 CFX_PointF pos = pPathData->GetPoint(i);
179 if (pObject2Device)
180 pos = pObject2Device->Transform(pos);
181
182 buf << pos.x << " " << pos.y;
183 switch (type) {
184 case FXPT_TYPE::MoveTo:
185 buf << " m ";
186 break;
187 case FXPT_TYPE::LineTo:
188 buf << " l ";
189 if (closing)
190 buf << "h ";
191 break;
192 case FXPT_TYPE::BezierTo: {
193 CFX_PointF pos1 = pPathData->GetPoint(i + 1);
194 CFX_PointF pos2 = pPathData->GetPoint(i + 2);
195 if (pObject2Device) {
196 pos1 = pObject2Device->Transform(pos1);
197 pos2 = pObject2Device->Transform(pos2);
198 }
199 buf << " " << pos1.x << " " << pos1.y << " " << pos2.x << " " << pos2.y
200 << " c";
201 if (closing)
202 buf << " h";
203 buf << "\n";
204 i += 2;
205 break;
206 }
207 }
208 }
209 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
210 }
211
SetClip_PathFill(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,int fill_mode)212 void CFX_PSRenderer::SetClip_PathFill(const CFX_PathData* pPathData,
213 const CFX_Matrix* pObject2Device,
214 int fill_mode) {
215 StartRendering();
216 OutputPath(pPathData, pObject2Device);
217 CFX_FloatRect rect = pPathData->GetBoundingBox();
218 if (pObject2Device)
219 rect = pObject2Device->TransformRect(rect);
220
221 m_ClipBox.left = static_cast<int>(rect.left);
222 m_ClipBox.right = static_cast<int>(rect.left + rect.right);
223 m_ClipBox.top = static_cast<int>(rect.top + rect.bottom);
224 m_ClipBox.bottom = static_cast<int>(rect.bottom);
225
226 m_pStream->WriteString("W");
227 if ((fill_mode & 3) != FXFILL_WINDING)
228 m_pStream->WriteString("*");
229 m_pStream->WriteString(" n\n");
230 }
231
SetClip_PathStroke(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,const CFX_GraphStateData * pGraphState)232 void CFX_PSRenderer::SetClip_PathStroke(const CFX_PathData* pPathData,
233 const CFX_Matrix* pObject2Device,
234 const CFX_GraphStateData* pGraphState) {
235 StartRendering();
236 SetGraphState(pGraphState);
237 if (pObject2Device) {
238 std::ostringstream buf;
239 buf << "mx Cm [" << pObject2Device->a << " " << pObject2Device->b << " "
240 << pObject2Device->c << " " << pObject2Device->d << " "
241 << pObject2Device->e << " " << pObject2Device->f << "]cm ";
242 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
243 }
244
245 OutputPath(pPathData, nullptr);
246 CFX_FloatRect rect = pPathData->GetBoundingBox(pGraphState->m_LineWidth,
247 pGraphState->m_MiterLimit);
248 m_ClipBox.Intersect(pObject2Device->TransformRect(rect).GetOuterRect());
249
250 m_pStream->WriteString("strokepath W n");
251 if (pObject2Device)
252 m_pStream->WriteString(" sm");
253 m_pStream->WriteString("\n");
254 }
255
DrawPath(const CFX_PathData * pPathData,const CFX_Matrix * pObject2Device,const CFX_GraphStateData * pGraphState,uint32_t fill_color,uint32_t stroke_color,int fill_mode)256 bool CFX_PSRenderer::DrawPath(const CFX_PathData* pPathData,
257 const CFX_Matrix* pObject2Device,
258 const CFX_GraphStateData* pGraphState,
259 uint32_t fill_color,
260 uint32_t stroke_color,
261 int fill_mode) {
262 StartRendering();
263 int fill_alpha = FXARGB_A(fill_color);
264 int stroke_alpha = FXARGB_A(stroke_color);
265 if (fill_alpha && fill_alpha < 255)
266 return false;
267 if (stroke_alpha && stroke_alpha < 255)
268 return false;
269 if (fill_alpha == 0 && stroke_alpha == 0)
270 return false;
271
272 if (stroke_alpha) {
273 SetGraphState(pGraphState);
274 if (pObject2Device) {
275 std::ostringstream buf;
276 buf << "mx Cm [" << pObject2Device->a << " " << pObject2Device->b << " "
277 << pObject2Device->c << " " << pObject2Device->d << " "
278 << pObject2Device->e << " " << pObject2Device->f << "]cm ";
279 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
280 }
281 }
282
283 OutputPath(pPathData, stroke_alpha ? nullptr : pObject2Device);
284 if (fill_mode && fill_alpha) {
285 SetColor(fill_color);
286 if ((fill_mode & 3) == FXFILL_WINDING) {
287 if (stroke_alpha)
288 m_pStream->WriteString("q f Q ");
289 else
290 m_pStream->WriteString("f");
291 } else if ((fill_mode & 3) == FXFILL_ALTERNATE) {
292 if (stroke_alpha)
293 m_pStream->WriteString("q F Q ");
294 else
295 m_pStream->WriteString("F");
296 }
297 }
298
299 if (stroke_alpha) {
300 SetColor(stroke_color);
301 m_pStream->WriteString("s");
302 if (pObject2Device)
303 m_pStream->WriteString(" sm");
304 }
305
306 m_pStream->WriteString("\n");
307 return true;
308 }
309
SetGraphState(const CFX_GraphStateData * pGraphState)310 void CFX_PSRenderer::SetGraphState(const CFX_GraphStateData* pGraphState) {
311 std::ostringstream buf;
312 if (!m_bGraphStateSet ||
313 m_CurGraphState.m_LineCap != pGraphState->m_LineCap) {
314 buf << pGraphState->m_LineCap << " J\n";
315 }
316 if (!m_bGraphStateSet ||
317 m_CurGraphState.m_DashCount != pGraphState->m_DashCount ||
318 memcmp(m_CurGraphState.m_DashArray, pGraphState->m_DashArray,
319 sizeof(float) * m_CurGraphState.m_DashCount)) {
320 buf << "[";
321 for (int i = 0; i < pGraphState->m_DashCount; ++i)
322 buf << pGraphState->m_DashArray[i] << " ";
323
324 buf << "]" << pGraphState->m_DashPhase << " d\n";
325 }
326 if (!m_bGraphStateSet ||
327 m_CurGraphState.m_LineJoin != pGraphState->m_LineJoin) {
328 buf << pGraphState->m_LineJoin << " j\n";
329 }
330 if (!m_bGraphStateSet ||
331 m_CurGraphState.m_LineWidth != pGraphState->m_LineWidth) {
332 buf << pGraphState->m_LineWidth << " w\n";
333 }
334 if (!m_bGraphStateSet ||
335 m_CurGraphState.m_MiterLimit != pGraphState->m_MiterLimit) {
336 buf << pGraphState->m_MiterLimit << " M\n";
337 }
338 m_CurGraphState.Copy(*pGraphState);
339 m_bGraphStateSet = true;
340 if (buf.tellp())
341 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
342 }
343
SetDIBits(const RetainPtr<CFX_DIBSource> & pSource,uint32_t color,int left,int top)344 bool CFX_PSRenderer::SetDIBits(const RetainPtr<CFX_DIBSource>& pSource,
345 uint32_t color,
346 int left,
347 int top) {
348 StartRendering();
349 CFX_Matrix matrix((float)(pSource->GetWidth()), 0.0f, 0.0f,
350 -(float)(pSource->GetHeight()), (float)(left),
351 (float)(top + pSource->GetHeight()));
352 return DrawDIBits(pSource, color, &matrix, 0);
353 }
354
StretchDIBits(const RetainPtr<CFX_DIBSource> & pSource,uint32_t color,int dest_left,int dest_top,int dest_width,int dest_height,uint32_t flags)355 bool CFX_PSRenderer::StretchDIBits(const RetainPtr<CFX_DIBSource>& pSource,
356 uint32_t color,
357 int dest_left,
358 int dest_top,
359 int dest_width,
360 int dest_height,
361 uint32_t flags) {
362 StartRendering();
363 CFX_Matrix matrix((float)(dest_width), 0.0f, 0.0f, (float)(-dest_height),
364 (float)(dest_left), (float)(dest_top + dest_height));
365 return DrawDIBits(pSource, color, &matrix, flags);
366 }
367
DrawDIBits(const RetainPtr<CFX_DIBSource> & pSource,uint32_t color,const CFX_Matrix * pMatrix,uint32_t flags)368 bool CFX_PSRenderer::DrawDIBits(const RetainPtr<CFX_DIBSource>& pSource,
369 uint32_t color,
370 const CFX_Matrix* pMatrix,
371 uint32_t flags) {
372 StartRendering();
373 if ((pMatrix->a == 0 && pMatrix->b == 0) ||
374 (pMatrix->c == 0 && pMatrix->d == 0)) {
375 return true;
376 }
377 if (pSource->HasAlpha())
378 return false;
379
380 int alpha = FXARGB_A(color);
381 if (pSource->IsAlphaMask() && (alpha < 255 || pSource->GetBPP() != 1))
382 return false;
383
384 m_pStream->WriteString("q\n");
385
386 std::ostringstream buf;
387 buf << "[" << pMatrix->a << " " << pMatrix->b << " " << pMatrix->c << " "
388 << pMatrix->d << " " << pMatrix->e << " " << pMatrix->f << "]cm ";
389
390 int width = pSource->GetWidth();
391 int height = pSource->GetHeight();
392 buf << width << " " << height;
393
394 if (pSource->GetBPP() == 1 && !pSource->GetPalette()) {
395 int pitch = (width + 7) / 8;
396 uint32_t src_size = height * pitch;
397 uint8_t* src_buf = FX_Alloc(uint8_t, src_size);
398 for (int row = 0; row < height; row++) {
399 const uint8_t* src_scan = pSource->GetScanline(row);
400 memcpy(src_buf + row * pitch, src_scan, pitch);
401 }
402
403 std::unique_ptr<uint8_t, FxFreeDeleter> output_buf;
404 uint32_t output_size;
405 FaxCompressData(src_buf, width, height, &output_buf, &output_size);
406 if (pSource->IsAlphaMask()) {
407 SetColor(color);
408 m_bColorSet = false;
409 buf << " true[";
410 } else {
411 buf << " 1[";
412 }
413 buf << width << " 0 0 -" << height << " 0 " << height
414 << "]currentfile/ASCII85Decode filter ";
415
416 if (output_buf.get() != src_buf) {
417 buf << "<</K -1/EndOfBlock false/Columns " << width << "/Rows " << height
418 << ">>/CCITTFaxDecode filter ";
419 }
420 if (pSource->IsAlphaMask())
421 buf << "iM\n";
422 else
423 buf << "false 1 colorimage\n";
424
425 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
426 WritePSBinary(output_buf.get(), output_size);
427 output_buf.release();
428 } else {
429 CFX_DIBExtractor source_extractor(pSource);
430 RetainPtr<CFX_DIBSource> pConverted = source_extractor.GetBitmap();
431 if (!pConverted)
432 return false;
433 switch (pSource->GetFormat()) {
434 case FXDIB_1bppRgb:
435 case FXDIB_Rgb32:
436 pConverted = pConverted->CloneConvert(FXDIB_Rgb);
437 break;
438 case FXDIB_8bppRgb:
439 if (pSource->GetPalette()) {
440 pConverted = pConverted->CloneConvert(FXDIB_Rgb);
441 }
442 break;
443 case FXDIB_1bppCmyk:
444 pConverted = pConverted->CloneConvert(FXDIB_Cmyk);
445 break;
446 case FXDIB_8bppCmyk:
447 if (pSource->GetPalette()) {
448 pConverted = pConverted->CloneConvert(FXDIB_Cmyk);
449 }
450 break;
451 default:
452 break;
453 }
454 if (!pConverted) {
455 m_pStream->WriteString("\nQ\n");
456 return false;
457 }
458
459 int bpp = pConverted->GetBPP() / 8;
460 uint8_t* output_buf = nullptr;
461 size_t output_size = 0;
462 const char* filter = nullptr;
463 if ((m_PSLevel == 2 || flags & FXRENDER_IMAGE_LOSSY) &&
464 CCodec_JpegModule::JpegEncode(pConverted, &output_buf, &output_size)) {
465 filter = "/DCTDecode filter ";
466 }
467 if (!filter) {
468 int src_pitch = width * bpp;
469 output_size = height * src_pitch;
470 output_buf = FX_Alloc(uint8_t, output_size);
471 for (int row = 0; row < height; row++) {
472 const uint8_t* src_scan = pConverted->GetScanline(row);
473 uint8_t* dest_scan = output_buf + row * src_pitch;
474 if (bpp == 3) {
475 for (int col = 0; col < width; col++) {
476 *dest_scan++ = src_scan[2];
477 *dest_scan++ = src_scan[1];
478 *dest_scan++ = *src_scan;
479 src_scan += 3;
480 }
481 } else {
482 memcpy(dest_scan, src_scan, src_pitch);
483 }
484 }
485 uint8_t* compressed_buf;
486 uint32_t compressed_size;
487 PSCompressData(m_PSLevel, output_buf, output_size, &compressed_buf,
488 &compressed_size, &filter);
489 if (output_buf != compressed_buf)
490 FX_Free(output_buf);
491
492 output_buf = compressed_buf;
493 output_size = compressed_size;
494 }
495 buf << " 8[";
496 buf << width << " 0 0 -" << height << " 0 " << height << "]";
497 buf << "currentfile/ASCII85Decode filter ";
498 if (filter)
499 buf << filter;
500
501 buf << "false " << bpp;
502 buf << " colorimage\n";
503 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
504
505 WritePSBinary(output_buf, output_size);
506 FX_Free(output_buf);
507 }
508 m_pStream->WriteString("\nQ\n");
509 return true;
510 }
511
SetColor(uint32_t color)512 void CFX_PSRenderer::SetColor(uint32_t color) {
513 bool bCMYK = false;
514 if (bCMYK != m_bCmykOutput || !m_bColorSet || m_LastColor != color) {
515 std::ostringstream buf;
516 if (bCMYK) {
517 buf << FXSYS_GetCValue(color) / 255.0 << " "
518 << FXSYS_GetMValue(color) / 255.0 << " "
519 << FXSYS_GetYValue(color) / 255.0 << " "
520 << FXSYS_GetKValue(color) / 255.0 << " k\n";
521 } else {
522 buf << FXARGB_R(color) / 255.0 << " " << FXARGB_G(color) / 255.0 << " "
523 << FXARGB_B(color) / 255.0 << " rg\n";
524 }
525 if (bCMYK == m_bCmykOutput) {
526 m_bColorSet = true;
527 m_LastColor = color;
528 }
529 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
530 }
531 }
532
FindPSFontGlyph(CFX_FaceCache * pFaceCache,CFX_Font * pFont,const FXTEXT_CHARPOS & charpos,int * ps_fontnum,int * ps_glyphindex)533 void CFX_PSRenderer::FindPSFontGlyph(CFX_FaceCache* pFaceCache,
534 CFX_Font* pFont,
535 const FXTEXT_CHARPOS& charpos,
536 int* ps_fontnum,
537 int* ps_glyphindex) {
538 int i = 0;
539 for (const auto& pPSFont : m_PSFontList) {
540 for (int j = 0; j < pPSFont->m_nGlyphs; j++) {
541 if (pPSFont->m_Glyphs[j].m_pFont == pFont &&
542 pPSFont->m_Glyphs[j].m_GlyphIndex == charpos.m_GlyphIndex &&
543 ((!pPSFont->m_Glyphs[j].m_bGlyphAdjust && !charpos.m_bGlyphAdjust) ||
544 (pPSFont->m_Glyphs[j].m_bGlyphAdjust && charpos.m_bGlyphAdjust &&
545 (fabs(pPSFont->m_Glyphs[j].m_AdjustMatrix[0] -
546 charpos.m_AdjustMatrix[0]) < 0.01 &&
547 fabs(pPSFont->m_Glyphs[j].m_AdjustMatrix[1] -
548 charpos.m_AdjustMatrix[1]) < 0.01 &&
549 fabs(pPSFont->m_Glyphs[j].m_AdjustMatrix[2] -
550 charpos.m_AdjustMatrix[2]) < 0.01 &&
551 fabs(pPSFont->m_Glyphs[j].m_AdjustMatrix[3] -
552 charpos.m_AdjustMatrix[3]) < 0.01)))) {
553 *ps_fontnum = i;
554 *ps_glyphindex = j;
555 return;
556 }
557 }
558 ++i;
559 }
560
561 if (m_PSFontList.empty() || m_PSFontList.back()->m_nGlyphs == 256) {
562 m_PSFontList.push_back(pdfium::MakeUnique<CPSFont>());
563 m_PSFontList.back()->m_nGlyphs = 0;
564 std::ostringstream buf;
565 buf << "8 dict begin/FontType 3 def/FontMatrix[1 0 0 1 0 0]def\n"
566 "/FontBBox[0 0 0 0]def/Encoding 256 array def 0 1 255{Encoding "
567 "exch/.notdef put}for\n"
568 "/CharProcs 1 dict def CharProcs begin/.notdef {} def end\n"
569 "/BuildGlyph{1 0 -10 -10 10 10 setcachedevice exch/CharProcs get "
570 "exch 2 copy known not{pop/.notdef}if get exec}bind def\n"
571 "/BuildChar{1 index/Encoding get exch get 1 index/BuildGlyph get "
572 "exec}bind def\n"
573 "currentdict end\n";
574 buf << "/X" << static_cast<uint32_t>(m_PSFontList.size() - 1)
575 << " exch definefont pop\n";
576 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
577 buf.str("");
578 }
579
580 *ps_fontnum = m_PSFontList.size() - 1;
581 CPSFont* pPSFont = m_PSFontList[*ps_fontnum].get();
582 int glyphindex = pPSFont->m_nGlyphs;
583 *ps_glyphindex = glyphindex;
584 pPSFont->m_Glyphs[glyphindex].m_GlyphIndex = charpos.m_GlyphIndex;
585 pPSFont->m_Glyphs[glyphindex].m_pFont = pFont;
586 pPSFont->m_Glyphs[glyphindex].m_bGlyphAdjust = charpos.m_bGlyphAdjust;
587 if (charpos.m_bGlyphAdjust) {
588 pPSFont->m_Glyphs[glyphindex].m_AdjustMatrix[0] = charpos.m_AdjustMatrix[0];
589 pPSFont->m_Glyphs[glyphindex].m_AdjustMatrix[1] = charpos.m_AdjustMatrix[1];
590 pPSFont->m_Glyphs[glyphindex].m_AdjustMatrix[2] = charpos.m_AdjustMatrix[2];
591 pPSFont->m_Glyphs[glyphindex].m_AdjustMatrix[3] = charpos.m_AdjustMatrix[3];
592 }
593 pPSFont->m_nGlyphs++;
594
595 CFX_Matrix matrix;
596 if (charpos.m_bGlyphAdjust) {
597 matrix =
598 CFX_Matrix(charpos.m_AdjustMatrix[0], charpos.m_AdjustMatrix[1],
599 charpos.m_AdjustMatrix[2], charpos.m_AdjustMatrix[3], 0, 0);
600 }
601 matrix.Concat(CFX_Matrix(1.0f, 0, 0, 1.0f, 0, 0));
602 const CFX_PathData* pPathData = pFaceCache->LoadGlyphPath(
603 pFont, charpos.m_GlyphIndex, charpos.m_FontCharWidth);
604 if (!pPathData)
605 return;
606
607 CFX_PathData TransformedPath(*pPathData);
608 if (charpos.m_bGlyphAdjust)
609 TransformedPath.Transform(&matrix);
610
611 std::ostringstream buf;
612 buf << "/X" << *ps_fontnum << " Ff/CharProcs get begin/" << glyphindex
613 << "{n ";
614 for (size_t p = 0; p < TransformedPath.GetPoints().size(); p++) {
615 CFX_PointF point = TransformedPath.GetPoint(p);
616 switch (TransformedPath.GetType(p)) {
617 case FXPT_TYPE::MoveTo: {
618 buf << point.x << " " << point.y << " m\n";
619 break;
620 }
621 case FXPT_TYPE::LineTo: {
622 buf << point.x << " " << point.y << " l\n";
623 break;
624 }
625 case FXPT_TYPE::BezierTo: {
626 CFX_PointF point1 = TransformedPath.GetPoint(p + 1);
627 CFX_PointF point2 = TransformedPath.GetPoint(p + 2);
628 buf << point.x << " " << point.y << " " << point1.x << " " << point1.y
629 << " " << point2.x << " " << point2.y << " c\n";
630 p += 2;
631 break;
632 }
633 }
634 }
635 buf << "f}bind def end\n";
636 buf << "/X" << *ps_fontnum << " Ff/Encoding get " << glyphindex << "/"
637 << glyphindex << " put\n";
638 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
639 }
640
DrawText(int nChars,const FXTEXT_CHARPOS * pCharPos,CFX_Font * pFont,const CFX_Matrix * pObject2Device,float font_size,uint32_t color)641 bool CFX_PSRenderer::DrawText(int nChars,
642 const FXTEXT_CHARPOS* pCharPos,
643 CFX_Font* pFont,
644 const CFX_Matrix* pObject2Device,
645 float font_size,
646 uint32_t color) {
647 // Do not send zero or negative font sizes to printers. See crbug.com/767343.
648 if (font_size <= 0.0)
649 return true;
650
651 if ((pObject2Device->a == 0 && pObject2Device->b == 0) ||
652 (pObject2Device->c == 0 && pObject2Device->d == 0)) {
653 return true;
654 }
655
656 StartRendering();
657 int alpha = FXARGB_A(color);
658 if (alpha < 255)
659 return false;
660
661 SetColor(color);
662 std::ostringstream buf;
663 buf << "q[" << pObject2Device->a << " " << pObject2Device->b << " "
664 << pObject2Device->c << " " << pObject2Device->d << " "
665 << pObject2Device->e << " " << pObject2Device->f << "]cm\n";
666
667 CFX_FontCache* pCache = CFX_GEModule::Get()->GetFontCache();
668 CFX_FaceCache* pFaceCache = pCache->GetCachedFace(pFont);
669 int last_fontnum = -1;
670 for (int i = 0; i < nChars; i++) {
671 int ps_fontnum, ps_glyphindex;
672 FindPSFontGlyph(pFaceCache, pFont, pCharPos[i], &ps_fontnum,
673 &ps_glyphindex);
674 if (last_fontnum != ps_fontnum) {
675 buf << "/X" << ps_fontnum << " Ff " << font_size << " Fs Sf ";
676 last_fontnum = ps_fontnum;
677 }
678 buf << pCharPos[i].m_Origin.x << " " << pCharPos[i].m_Origin.y << " m";
679 ByteString hex = ByteString::Format("<%02X>", ps_glyphindex);
680 buf << hex.AsStringView() << "Tj\n";
681 }
682 buf << "Q\n";
683 m_pStream->WriteBlock(buf.str().c_str(), buf.tellp());
684 pCache->ReleaseCachedFace(pFont);
685 return true;
686 }
687
WritePSBinary(const uint8_t * data,int len)688 void CFX_PSRenderer::WritePSBinary(const uint8_t* data, int len) {
689 uint8_t* dest_buf;
690 uint32_t dest_size;
691 CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
692 if (pEncoders->GetBasicModule()->A85Encode(data, len, &dest_buf,
693 &dest_size)) {
694 m_pStream->WriteBlock(dest_buf, dest_size);
695 FX_Free(dest_buf);
696 } else {
697 m_pStream->WriteBlock(data, len);
698 }
699 }
700