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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/renderer/print_web_view_helper.h" | 5 #include "chrome/renderer/print_web_view_helper.h" |
6 | 6 |
7 #include "base/i18n/rtl.h" | |
7 #include "base/logging.h" | 8 #include "base/logging.h" |
8 #include "base/memory/scoped_ptr.h" | 9 #include "base/memory/scoped_ptr.h" |
9 #include "base/metrics/histogram.h" | 10 #include "base/metrics/histogram.h" |
10 #include "base/process_util.h" | 11 #include "base/process_util.h" |
11 #include "base/win/scoped_gdi_object.h" | 12 #include "base/win/scoped_gdi_object.h" |
12 #include "base/win/scoped_hdc.h" | 13 #include "base/win/scoped_hdc.h" |
13 #include "base/win/scoped_select_object.h" | 14 #include "base/win/scoped_select_object.h" |
14 #include "chrome/common/print_messages.h" | 15 #include "chrome/common/print_messages.h" |
15 #include "printing/metafile.h" | 16 #include "printing/metafile.h" |
16 #include "printing/metafile_impl.h" | 17 #include "printing/metafile_impl.h" |
17 #include "printing/metafile_skia_wrapper.h" | 18 #include "printing/metafile_skia_wrapper.h" |
18 #include "printing/page_size_margins.h" | 19 #include "printing/page_size_margins.h" |
19 #include "printing/units.h" | 20 #include "printing/units.h" |
20 #include "skia/ext/vector_canvas.h" | 21 #include "skia/ext/vector_canvas.h" |
21 #include "skia/ext/platform_device.h" | 22 #include "skia/ext/platform_device.h" |
22 #include "third_party/skia/include/core/SkRefCnt.h" | 23 #include "third_party/skia/include/core/SkRefCnt.h" |
24 #include "third_party/skia/include/ports/SkTypeface_win.h" | |
23 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" | 25 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h" |
24 #include "ui/gfx/gdi_util.h" | 26 #include "ui/gfx/gdi_util.h" |
25 #include "ui/gfx/point.h" | 27 #include "ui/gfx/point.h" |
26 #include "ui/gfx/rect.h" | 28 #include "ui/gfx/rect.h" |
27 #include "ui/gfx/size.h" | 29 #include "ui/gfx/size.h" |
28 | 30 |
29 using printing::ConvertUnit; | 31 using printing::ConvertUnit; |
30 using printing::ConvertUnitDouble; | 32 using printing::ConvertUnitDouble; |
31 using printing::kPointsPerInch; | 33 using printing::kPointsPerInch; |
32 using printing::Metafile; | 34 using printing::Metafile; |
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320 shared_buf.Unmap(); | 322 shared_buf.Unmap(); |
321 return false; | 323 return false; |
322 } | 324 } |
323 shared_buf.GiveToProcess(base::GetCurrentProcessHandle(), shared_mem_handle); | 325 shared_buf.GiveToProcess(base::GetCurrentProcessHandle(), shared_mem_handle); |
324 shared_buf.Unmap(); | 326 shared_buf.Unmap(); |
325 | 327 |
326 Send(new PrintHostMsg_DuplicateSection(routing_id(), *shared_mem_handle, | 328 Send(new PrintHostMsg_DuplicateSection(routing_id(), *shared_mem_handle, |
327 shared_mem_handle)); | 329 shared_mem_handle)); |
328 return true; | 330 return true; |
329 } | 331 } |
332 | |
333 #if defined(USE_SKIA) | |
334 | |
335 // Uniscribe generation is very time consuming so a global cache for previous | |
336 // results are needed. | |
337 SCRIPT_CACHE PrintWebViewHelper::g_script_cache_; | |
338 SCRIPT_ANALYSIS PrintWebViewHelper::g_script_analysis_; | |
jungshik at Google
2012/01/06 22:38:45
In the past, we used to have UniscribeHelper class
xji
2012/01/07 01:21:15
Mike (msw@) implemented RenderText in Windows.
The
| |
339 | |
340 // static | |
341 bool PrintWebViewHelper::ConvertTextToGlyphs(SkTypeface* typeface, | |
342 const string16& text, | |
343 std::vector<uint16_t>* glyphs) { | |
344 bool rtl = base::i18n::IsRTL() && | |
345 base::i18n::StringContainsStrongRTLChars(text); | |
346 HRESULT hr = ScriptIsComplex(text.c_str(), text.size(), SIC_COMPLEX); | |
347 if (hr != S_OK && !rtl) { | |
348 return false; // Script is neither complex nor BiDi. | |
349 } | |
350 | |
351 // Complex script handling started here. | |
352 std::vector<SCRIPT_ITEM> items; | |
353 int max_items = text.size(); | |
354 int generated_items; | |
355 for (;;) { | |
356 items.resize(max_items); | |
357 hr = ScriptItemize(text.c_str(), text.size(), max_items - 1, NULL, NULL, | |
358 &items[0], &generated_items); | |
359 if (SUCCEEDED(hr)) { | |
360 items.resize(generated_items + 1); | |
361 break; | |
362 } | |
363 if (hr != E_OUTOFMEMORY) { | |
364 return false; | |
365 } | |
366 max_items *= 2; | |
367 } | |
368 | |
369 std::vector<int> visual_to_logical(generated_items + 1); | |
370 std::vector<int> logical_to_visual(generated_items + 1); | |
371 std::vector<BYTE> directions(generated_items); | |
372 for (int i = 0; i < generated_items; ++i) { | |
373 directions[i] = items[i].a.s.uBidiLevel; | |
374 } | |
375 | |
376 ScriptLayout(generated_items, &directions[0], &visual_to_logical[0], | |
377 &logical_to_visual[0]); | |
378 visual_to_logical.push_back(generated_items); | |
379 logical_to_visual.push_back(generated_items); | |
380 | |
381 base::win::ScopedCreateDC dc(CreateCompatibleDC(GetDC(NULL))); | |
382 LOGFONT lf; | |
383 SkLOGFONTFromTypeface(typeface, &lf); | |
384 HFONT font_handle = CreateFontIndirect(&lf); | |
385 if (font_handle == NULL) { | |
386 return false; | |
387 } | |
388 SelectObject(dc.Get(), font_handle); | |
389 | |
390 for (size_t i = 0; i < items.size() - 1; ++i) { | |
391 int index = logical_to_visual[i]; | |
392 int input_length = items[index + 1].iCharPos - items[index].iCharPos; | |
393 | |
394 // Initial size guess suggested by MSDN. | |
395 std::vector<WORD> logs(input_length); | |
396 int max_glyph_len = input_length * 3 / 2 + 16; | |
397 std::vector<WORD> glyph_buffer; | |
398 std::vector<SCRIPT_VISATTR> visattr; | |
399 | |
400 for (;;) { | |
401 int glyphs_used; | |
402 glyph_buffer.resize(max_glyph_len); | |
403 visattr.resize(max_glyph_len); | |
404 items[index].a.fLogicalOrder = FALSE; | |
405 hr = ScriptShape(dc, &g_script_cache_, &text[items[index].iCharPos], | |
406 input_length, max_glyph_len, &(items[index].a), | |
407 &glyph_buffer[0], &logs[0], &visattr[0], &glyphs_used); | |
408 if (SUCCEEDED(hr)) { | |
409 // We are not supposed to handle Kashidas in Arabic, so reverting the | |
410 // glyph order shall be good enough for all RTLs. | |
411 glyph_buffer.resize(glyphs_used); | |
412 glyphs->insert(glyphs->end(), glyph_buffer.begin(),glyph_buffer.end()); | |
413 break; | |
414 } | |
415 | |
416 if (hr == E_PENDING) { | |
417 // keep waiting | |
418 } else if (hr != E_OUTOFMEMORY) { | |
419 return false; | |
420 } | |
421 | |
jungshik at Google
2012/01/06 22:38:45
After calling ScriptShape, ScriptPlace (?) has to
| |
422 max_glyph_len *= 2; | |
423 } | |
424 } | |
425 | |
426 return true; | |
427 } | |
428 #endif | |
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