1 // Copyright (c) 2012 The Chromium 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.
5 #include "pdf/pdfium/pdfium_engine.h"
9 #include "base/json/json_writer.h"
10 #include "base/logging.h"
11 #include "base/memory/scoped_ptr.h"
12 #include "base/stl_util.h"
13 #include "base/strings/string_number_conversions.h"
14 #include "base/strings/string_piece.h"
15 #include "base/strings/string_util.h"
16 #include "base/strings/utf_string_conversions.h"
17 #include "base/values.h"
18 #include "pdf/draw_utils.h"
19 #include "pdf/pdfium/pdfium_mem_buffer_file_read.h"
20 #include "pdf/pdfium/pdfium_mem_buffer_file_write.h"
21 #include "ppapi/c/pp_errors.h"
22 #include "ppapi/c/pp_input_event.h"
23 #include "ppapi/c/ppb_core.h"
24 #include "ppapi/c/private/ppb_pdf.h"
25 #include "ppapi/cpp/dev/memory_dev.h"
26 #include "ppapi/cpp/input_event.h"
27 #include "ppapi/cpp/instance.h"
28 #include "ppapi/cpp/module.h"
29 #include "ppapi/cpp/private/pdf.h"
30 #include "ppapi/cpp/trusted/browser_font_trusted.h"
31 #include "ppapi/cpp/url_response_info.h"
32 #include "ppapi/cpp/var.h"
33 #include "third_party/pdfium/fpdfsdk/include/fpdf_ext.h"
34 #include "third_party/pdfium/fpdfsdk/include/fpdf_flatten.h"
35 #include "third_party/pdfium/fpdfsdk/include/fpdf_searchex.h"
36 #include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h"
37 #include "third_party/pdfium/fpdfsdk/include/fpdf_transformpage.h"
38 #include "third_party/pdfium/fpdfsdk/include/fpdfedit.h"
39 #include "third_party/pdfium/fpdfsdk/include/fpdfoom.h"
40 #include "third_party/pdfium/fpdfsdk/include/fpdfppo.h"
41 #include "third_party/pdfium/fpdfsdk/include/fpdfsave.h"
42 #include "third_party/pdfium/fpdfsdk/include/pdfwindow/PDFWindow.h"
43 #include "third_party/pdfium/fpdfsdk/include/pdfwindow/PWL_FontMap.h"
44 #include "ui/events/keycodes/keyboard_codes.h"
46 namespace chrome_pdf {
48 #define kPageShadowTop 3
49 #define kPageShadowBottom 7
50 #define kPageShadowLeft 5
51 #define kPageShadowRight 5
53 #define kPageSeparatorThickness 4
54 #define kHighlightColorR 153
55 #define kHighlightColorG 193
56 #define kHighlightColorB 218
58 #define kPendingPageColorR 238
59 #define kPendingPageColorG 238
60 #define kPendingPageColorB 238
61 #define kPendingPageColorA 255
63 #define kFormHighlightColor 0xFFE4DD
64 #define kFormHighlightAlpha 100
66 #define kMaxPasswordTries 3
69 // http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf
70 #define kPDFPermissionPrintLowQualityMask 1 << 2
71 #define kPDFPermissionPrintHighQualityMask 1 << 11
72 #define kPDFPermissionCopyMask 1 << 4
73 #define kPDFPermissionCopyAccessibleMask 1 << 9
75 #define kLoadingTextVerticalOffset 50
77 // The maximum amount of time we'll spend doing a paint before we give back
78 // control of the thread.
79 #define kMaxProgressivePaintTimeMs 50
81 // The maximum amount of time we'll spend doing the first paint. This is less
82 // than the above to keep things smooth if the user is scrolling quickly. We
83 // try painting a little because with accelerated compositing, we get flushes
84 // only every 16 ms. If we were to wait until the next flush to paint the rest
85 // of the pdf, we would never get to draw the pdf and would only draw the
86 // scrollbars. This value is picked to give enough time for gpu related code to
87 // do its thing and still fit within the timelimit for 60Hz. For the
88 // non-composited case, this doesn't make things worse since we're still
89 // painting the scrollbars > 60 Hz.
90 #define kMaxInitialProgressivePaintTimeMs 10
92 // Copied from printing/units.cc because we don't want to depend on printing
93 // since it brings in libpng which causes duplicate symbols with PDFium.
94 const int kPointsPerInch = 72;
95 const int kPixelsPerInch = 96;
104 int ConvertUnit(int value, int old_unit, int new_unit) {
105 // With integer arithmetic, to divide a value with correct rounding, you need
106 // to add half of the divisor value to the dividend value. You need to do the
107 // reverse with negative number.
109 return ((value * new_unit) + (old_unit / 2)) / old_unit;
111 return ((value * new_unit) - (old_unit / 2)) / old_unit;
115 std::vector<uint32_t> GetPageNumbersFromPrintPageNumberRange(
116 const PP_PrintPageNumberRange_Dev* page_ranges,
117 uint32_t page_range_count) {
118 std::vector<uint32_t> page_numbers;
119 for (uint32_t index = 0; index < page_range_count; ++index) {
120 for (uint32_t page_number = page_ranges[index].first_page_number;
121 page_number <= page_ranges[index].last_page_number; ++page_number) {
122 page_numbers.push_back(page_number);
128 #if defined(OS_LINUX)
130 PP_Instance g_last_instance_id;
132 struct PDFFontSubstitution {
133 const char* pdf_name;
139 PP_BrowserFont_Trusted_Weight WeightToBrowserFontTrustedWeight(int weight) {
140 COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_100 == 0,
141 PP_BrowserFont_Trusted_Weight_Min);
142 COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_900 == 8,
143 PP_BrowserFont_Trusted_Weight_Max);
144 const int kMinimumWeight = 100;
145 const int kMaximumWeight = 900;
146 int normalized_weight =
147 std::min(std::max(weight, kMinimumWeight), kMaximumWeight);
148 normalized_weight = (normalized_weight / 100) - 1;
149 return static_cast<PP_BrowserFont_Trusted_Weight>(normalized_weight);
152 // This list is for CPWL_FontMap::GetDefaultFontByCharset().
153 // We pretend to have these font natively and let the browser (or underlying
154 // fontconfig) to pick the proper font on the system.
155 void EnumFonts(struct _FPDF_SYSFONTINFO* sysfontinfo, void* mapper) {
156 FPDF_AddInstalledFont(mapper, "Arial", FXFONT_DEFAULT_CHARSET);
159 while (CPWL_FontMap::defaultTTFMap[i].charset != -1) {
160 FPDF_AddInstalledFont(mapper,
161 CPWL_FontMap::defaultTTFMap[i].fontname,
162 CPWL_FontMap::defaultTTFMap[i].charset);
167 const PDFFontSubstitution PDFFontSubstitutions[] = {
168 {"Courier", "Courier New", false, false},
169 {"Courier-Bold", "Courier New", true, false},
170 {"Courier-BoldOblique", "Courier New", true, true},
171 {"Courier-Oblique", "Courier New", false, true},
172 {"Helvetica", "Arial", false, false},
173 {"Helvetica-Bold", "Arial", true, false},
174 {"Helvetica-BoldOblique", "Arial", true, true},
175 {"Helvetica-Oblique", "Arial", false, true},
176 {"Times-Roman", "Times New Roman", false, false},
177 {"Times-Bold", "Times New Roman", true, false},
178 {"Times-BoldItalic", "Times New Roman", true, true},
179 {"Times-Italic", "Times New Roman", false, true},
181 // MS P?(Mincho|Gothic) are the most notable fonts in Japanese PDF files
182 // without embedding the glyphs. Sometimes the font names are encoded
183 // in Japanese Windows's locale (CP932/Shift_JIS) without space.
184 // Most Linux systems don't have the exact font, but for outsourcing
185 // fontconfig to find substitutable font in the system, we pass ASCII
187 {"MS-PGothic", "MS PGothic", false, false},
188 {"MS-Gothic", "MS Gothic", false, false},
189 {"MS-PMincho", "MS PMincho", false, false},
190 {"MS-Mincho", "MS Mincho", false, false},
191 // MS PGothic in Shift_JIS encoding.
192 {"\x82\x6C\x82\x72\x82\x6F\x83\x53\x83\x56\x83\x62\x83\x4E",
193 "MS PGothic", false, false},
194 // MS Gothic in Shift_JIS encoding.
195 {"\x82\x6C\x82\x72\x83\x53\x83\x56\x83\x62\x83\x4E",
196 "MS Gothic", false, false},
197 // MS PMincho in Shift_JIS encoding.
198 {"\x82\x6C\x82\x72\x82\x6F\x96\xBE\x92\xA9",
199 "MS PMincho", false, false},
200 // MS Mincho in Shift_JIS encoding.
201 {"\x82\x6C\x82\x72\x96\xBE\x92\xA9",
202 "MS Mincho", false, false},
205 void* MapFont(struct _FPDF_SYSFONTINFO*, int weight, int italic,
206 int charset, int pitch_family, const char* face, int* exact) {
207 // Do not attempt to map fonts if pepper is not initialized (for privet local
209 // TODO(noamsml): Real font substitution (http://crbug.com/391978)
210 if (!pp::Module::Get())
213 pp::BrowserFontDescription description;
215 // Pretend the system does not have the Symbol font to force a fallback to
216 // the built in Symbol font in CFX_FontMapper::FindSubstFont().
217 if (strcmp(face, "Symbol") == 0)
220 if (pitch_family & FXFONT_FF_FIXEDPITCH) {
221 description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE);
222 } else if (pitch_family & FXFONT_FF_ROMAN) {
223 description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF);
226 // Map from the standard PDF fonts to TrueType font names.
228 for (i = 0; i < arraysize(PDFFontSubstitutions); ++i) {
229 if (strcmp(face, PDFFontSubstitutions[i].pdf_name) == 0) {
230 description.set_face(PDFFontSubstitutions[i].face);
231 if (PDFFontSubstitutions[i].bold)
232 description.set_weight(PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD);
233 if (PDFFontSubstitutions[i].italic)
234 description.set_italic(true);
239 if (i == arraysize(PDFFontSubstitutions)) {
240 // TODO(kochi): Pass the face in UTF-8. If face is not encoded in UTF-8,
241 // convert to UTF-8 before passing.
242 description.set_face(face);
244 description.set_weight(WeightToBrowserFontTrustedWeight(weight));
245 description.set_italic(italic > 0);
248 if (!pp::PDF::IsAvailable()) {
253 PP_Resource font_resource = pp::PDF::GetFontFileWithFallback(
254 pp::InstanceHandle(g_last_instance_id),
255 &description.pp_font_description(),
256 static_cast<PP_PrivateFontCharset>(charset));
257 long res_id = font_resource;
258 return reinterpret_cast<void*>(res_id);
261 unsigned long GetFontData(struct _FPDF_SYSFONTINFO*, void* font_id,
262 unsigned int table, unsigned char* buffer,
263 unsigned long buf_size) {
264 if (!pp::PDF::IsAvailable()) {
269 uint32_t size = buf_size;
270 long res_id = reinterpret_cast<long>(font_id);
271 if (!pp::PDF::GetFontTableForPrivateFontFile(res_id, table, buffer, &size))
276 void DeleteFont(struct _FPDF_SYSFONTINFO*, void* font_id) {
277 long res_id = reinterpret_cast<long>(font_id);
278 pp::Module::Get()->core()->ReleaseResource(res_id);
281 FPDF_SYSFONTINFO g_font_info = {
292 #endif // defined(OS_LINUX)
294 void OOM_Handler(_OOM_INFO*) {
295 // Kill the process. This is important for security, since the code doesn't
296 // NULL-check many memory allocations. If a malloc fails, returns NULL, and
297 // the buffer is then used, it provides a handy mapping of memory starting at
298 // address 0 for an attacker to utilize.
302 OOM_INFO g_oom_info = {
307 PDFiumEngine* g_engine_for_unsupported;
309 void Unsupported_Handler(UNSUPPORT_INFO*, int type) {
310 if (!g_engine_for_unsupported) {
315 g_engine_for_unsupported->UnsupportedFeature(type);
318 UNSUPPORT_INFO g_unsuppored_info = {
323 // Set the destination page size and content area in points based on source
324 // page rotation and orientation.
326 // |rotated| True if source page is rotated 90 degree or 270 degree.
327 // |is_src_page_landscape| is true if the source page orientation is landscape.
328 // |page_size| has the actual destination page size in points.
329 // |content_rect| has the actual destination page printable area values in
331 void SetPageSizeAndContentRect(bool rotated,
332 bool is_src_page_landscape,
334 pp::Rect* content_rect) {
335 bool is_dst_page_landscape = page_size->width() > page_size->height();
336 bool page_orientation_mismatched = is_src_page_landscape !=
337 is_dst_page_landscape;
338 bool rotate_dst_page = rotated ^ page_orientation_mismatched;
339 if (rotate_dst_page) {
340 page_size->SetSize(page_size->height(), page_size->width());
341 content_rect->SetRect(content_rect->y(), content_rect->x(),
342 content_rect->height(), content_rect->width());
346 // Calculate the scale factor between |content_rect| and a page of size
347 // |src_width| x |src_height|.
349 // |scale_to_fit| is true, if we need to calculate the scale factor.
350 // |content_rect| specifies the printable area of the destination page, with
351 // origin at left-bottom. Values are in points.
352 // |src_width| specifies the source page width in points.
353 // |src_height| specifies the source page height in points.
354 // |rotated| True if source page is rotated 90 degree or 270 degree.
355 double CalculateScaleFactor(bool scale_to_fit,
356 const pp::Rect& content_rect,
357 double src_width, double src_height, bool rotated) {
358 if (!scale_to_fit || src_width == 0 || src_height == 0)
361 double actual_source_page_width = rotated ? src_height : src_width;
362 double actual_source_page_height = rotated ? src_width : src_height;
363 double ratio_x = static_cast<double>(content_rect.width()) /
364 actual_source_page_width;
365 double ratio_y = static_cast<double>(content_rect.height()) /
366 actual_source_page_height;
367 return std::min(ratio_x, ratio_y);
370 // Compute source clip box boundaries based on the crop box / media box of
371 // source page and scale factor.
373 // |page| Handle to the source page. Returned by FPDF_LoadPage function.
374 // |scale_factor| specifies the scale factor that should be applied to source
375 // clip box boundaries.
376 // |rotated| True if source page is rotated 90 degree or 270 degree.
377 // |clip_box| out param to hold the computed source clip box values.
378 void CalculateClipBoxBoundary(FPDF_PAGE page, double scale_factor, bool rotated,
380 if (!FPDFPage_GetCropBox(page, &clip_box->left, &clip_box->bottom,
381 &clip_box->right, &clip_box->top)) {
382 if (!FPDFPage_GetMediaBox(page, &clip_box->left, &clip_box->bottom,
383 &clip_box->right, &clip_box->top)) {
384 // Make the default size to be letter size (8.5" X 11"). We are just
385 // following the PDFium way of handling these corner cases. PDFium always
386 // consider US-Letter as the default page size.
387 float paper_width = 612;
388 float paper_height = 792;
390 clip_box->bottom = 0;
391 clip_box->right = rotated ? paper_height : paper_width;
392 clip_box->top = rotated ? paper_width : paper_height;
395 clip_box->left *= scale_factor;
396 clip_box->right *= scale_factor;
397 clip_box->bottom *= scale_factor;
398 clip_box->top *= scale_factor;
401 // Calculate the clip box translation offset for a page that does need to be
402 // scaled. All parameters are in points.
404 // |content_rect| specifies the printable area of the destination page, with
405 // origin at left-bottom.
406 // |source_clip_box| specifies the source clip box positions, relative to
407 // origin at left-bottom.
408 // |offset_x| and |offset_y| will contain the final translation offsets for the
409 // source clip box, relative to origin at left-bottom.
410 void CalculateScaledClipBoxOffset(const pp::Rect& content_rect,
411 const ClipBox& source_clip_box,
412 double* offset_x, double* offset_y) {
413 const float clip_box_width = source_clip_box.right - source_clip_box.left;
414 const float clip_box_height = source_clip_box.top - source_clip_box.bottom;
416 // Center the intended clip region to real clip region.
417 *offset_x = (content_rect.width() - clip_box_width) / 2 + content_rect.x() -
418 source_clip_box.left;
419 *offset_y = (content_rect.height() - clip_box_height) / 2 + content_rect.y() -
420 source_clip_box.bottom;
423 // Calculate the clip box offset for a page that does not need to be scaled.
424 // All parameters are in points.
426 // |content_rect| specifies the printable area of the destination page, with
427 // origin at left-bottom.
428 // |rotation| specifies the source page rotation values which are N / 90
430 // |page_width| specifies the screen destination page width.
431 // |page_height| specifies the screen destination page height.
432 // |source_clip_box| specifies the source clip box positions, relative to origin
434 // |offset_x| and |offset_y| will contain the final translation offsets for the
435 // source clip box, relative to origin at left-bottom.
436 void CalculateNonScaledClipBoxOffset(const pp::Rect& content_rect, int rotation,
437 int page_width, int page_height,
438 const ClipBox& source_clip_box,
439 double* offset_x, double* offset_y) {
440 // Align the intended clip region to left-top corner of real clip region.
443 *offset_x = -1 * source_clip_box.left;
444 *offset_y = page_height - source_clip_box.top;
448 *offset_y = -1 * source_clip_box.bottom;
451 *offset_x = page_width - source_clip_box.right;
455 *offset_x = page_height - source_clip_box.right;
456 *offset_y = page_width - source_clip_box.top;
464 // Do an in-place transformation of objects on |page|. Translate all objects on
465 // |page| in |source_clip_box| by (|offset_x|, |offset_y|) and scale them by
468 // |page| Handle to the page. Returned by FPDF_LoadPage function.
469 // |source_clip_box| specifies the source clip box positions, relative to
470 // origin at left-bottom.
471 // |scale_factor| specifies the scale factor that should be applied to page
473 // |offset_x| and |offset_y| specifies the translation offsets for the page
474 // objects, relative to origin at left-bottom.
476 void TransformPageObjects(FPDF_PAGE page, const ClipBox& source_clip_box,
477 const double scale_factor, double offset_x,
479 const int obj_count = FPDFPage_CountObject(page);
481 // Create a new clip path.
482 FPDF_CLIPPATH clip_path = FPDF_CreateClipPath(
483 source_clip_box.left + offset_x, source_clip_box.bottom + offset_y,
484 source_clip_box.right + offset_x, source_clip_box.top + offset_y);
486 for (int obj_idx = 0; obj_idx < obj_count; ++obj_idx) {
487 FPDF_PAGEOBJECT page_obj = FPDFPage_GetObject(page, obj_idx);
488 FPDFPageObj_Transform(page_obj, scale_factor, 0, 0, scale_factor,
490 FPDFPageObj_TransformClipPath(page_obj, scale_factor, 0, 0, scale_factor,
493 FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor,
495 FPDFPage_GenerateContent(page);
497 // Add a extra clip path to the new pdf page here.
498 FPDFPage_InsertClipPath(page, clip_path);
500 // Destroy the clip path.
501 FPDF_DestroyClipPath(clip_path);
504 bool InitializeSDK(void* data) {
505 FPDF_InitLibrary(data);
507 #if defined(OS_LINUX)
508 // Font loading doesn't work in the renderer sandbox in Linux.
509 FPDF_SetSystemFontInfo(&g_font_info);
512 FSDK_SetOOMHandler(&g_oom_info);
513 FSDK_SetUnSpObjProcessHandler(&g_unsuppored_info);
519 FPDF_DestroyLibrary();
522 PDFEngine* PDFEngine::Create(PDFEngine::Client* client) {
523 return new PDFiumEngine(client);
526 PDFiumEngine::PDFiumEngine(PDFEngine::Client* client)
529 current_rotation_(0),
531 password_tries_remaining_(0),
534 defer_page_unload_(false),
536 next_page_to_search_(-1),
537 last_page_to_search_(-1),
538 last_character_index_to_search_(-1),
539 current_find_index_(-1),
541 fpdf_availability_(NULL),
543 last_page_mouse_down_(-1),
544 first_visible_page_(-1),
545 most_visible_page_(-1),
546 called_do_document_action_(false),
547 render_grayscale_(false),
548 progressive_paint_timeout_(0),
549 getting_password_(false) {
550 find_factory_.Initialize(this);
551 password_factory_.Initialize(this);
553 file_access_.m_FileLen = 0;
554 file_access_.m_GetBlock = &GetBlock;
555 file_access_.m_Param = &doc_loader_;
557 file_availability_.version = 1;
558 file_availability_.IsDataAvail = &IsDataAvail;
559 file_availability_.loader = &doc_loader_;
561 download_hints_.version = 1;
562 download_hints_.AddSegment = &AddSegment;
563 download_hints_.loader = &doc_loader_;
565 // Initialize FPDF_FORMFILLINFO member variables. Deriving from this struct
566 // allows the static callbacks to be able to cast the FPDF_FORMFILLINFO in
567 // callbacks to ourself instead of maintaining a map of them to
569 FPDF_FORMFILLINFO::version = 1;
570 FPDF_FORMFILLINFO::m_pJsPlatform = this;
571 FPDF_FORMFILLINFO::Release = NULL;
572 FPDF_FORMFILLINFO::FFI_Invalidate = Form_Invalidate;
573 FPDF_FORMFILLINFO::FFI_OutputSelectedRect = Form_OutputSelectedRect;
574 FPDF_FORMFILLINFO::FFI_SetCursor = Form_SetCursor;
575 FPDF_FORMFILLINFO::FFI_SetTimer = Form_SetTimer;
576 FPDF_FORMFILLINFO::FFI_KillTimer = Form_KillTimer;
577 FPDF_FORMFILLINFO::FFI_GetLocalTime = Form_GetLocalTime;
578 FPDF_FORMFILLINFO::FFI_OnChange = Form_OnChange;
579 FPDF_FORMFILLINFO::FFI_GetPage = Form_GetPage;
580 FPDF_FORMFILLINFO::FFI_GetCurrentPage = Form_GetCurrentPage;
581 FPDF_FORMFILLINFO::FFI_GetRotation = Form_GetRotation;
582 FPDF_FORMFILLINFO::FFI_ExecuteNamedAction = Form_ExecuteNamedAction;
583 FPDF_FORMFILLINFO::FFI_SetTextFieldFocus = Form_SetTextFieldFocus;
584 FPDF_FORMFILLINFO::FFI_DoURIAction = Form_DoURIAction;
585 FPDF_FORMFILLINFO::FFI_DoGoToAction = Form_DoGoToAction;
587 IPDF_JSPLATFORM::version = 1;
588 IPDF_JSPLATFORM::app_alert = Form_Alert;
589 IPDF_JSPLATFORM::app_beep = Form_Beep;
590 IPDF_JSPLATFORM::app_response = Form_Response;
591 IPDF_JSPLATFORM::Doc_getFilePath = Form_GetFilePath;
592 IPDF_JSPLATFORM::Doc_mail = Form_Mail;
593 IPDF_JSPLATFORM::Doc_print = Form_Print;
594 IPDF_JSPLATFORM::Doc_submitForm = Form_SubmitForm;
595 IPDF_JSPLATFORM::Doc_gotoPage = Form_GotoPage;
596 IPDF_JSPLATFORM::Field_browse = Form_Browse;
598 IFSDK_PAUSE::version = 1;
599 IFSDK_PAUSE::user = NULL;
600 IFSDK_PAUSE::NeedToPauseNow = Pause_NeedToPauseNow;
603 PDFiumEngine::~PDFiumEngine() {
604 STLDeleteElements(&pages_);
607 FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC);
608 FPDFDOC_ExitFormFillEnviroument(form_);
610 FPDF_CloseDocument(doc_);
613 if (fpdf_availability_)
614 FPDFAvail_Destroy(fpdf_availability_);
617 int PDFiumEngine::GetBlock(void* param, unsigned long position,
618 unsigned char* buffer, unsigned long size) {
619 DocumentLoader* loader = static_cast<DocumentLoader*>(param);
620 return loader->GetBlock(position, size, buffer);
623 bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param,
624 size_t offset, size_t size) {
625 PDFiumEngine::FileAvail* file_avail =
626 static_cast<PDFiumEngine::FileAvail*>(param);
627 return file_avail->loader->IsDataAvailable(offset, size);
630 void PDFiumEngine::AddSegment(FX_DOWNLOADHINTS* param,
631 size_t offset, size_t size) {
632 PDFiumEngine::DownloadHints* download_hints =
633 static_cast<PDFiumEngine::DownloadHints*>(param);
634 return download_hints->loader->RequestData(offset, size);
637 bool PDFiumEngine::New(const char* url) {
639 headers_ = std::string();
643 bool PDFiumEngine::New(const char* url,
644 const char* headers) {
647 headers_ = std::string();
653 void PDFiumEngine::PageOffsetUpdated(const pp::Point& page_offset) {
654 page_offset_ = page_offset;
657 void PDFiumEngine::PluginSizeUpdated(const pp::Size& size) {
661 CalculateVisiblePages();
664 void PDFiumEngine::ScrolledToXPosition(int position) {
667 int old_x = position_.x();
668 position_.set_x(position);
669 CalculateVisiblePages();
670 client_->Scroll(pp::Point(old_x - position, 0));
673 void PDFiumEngine::ScrolledToYPosition(int position) {
676 int old_y = position_.y();
677 position_.set_y(position);
678 CalculateVisiblePages();
679 client_->Scroll(pp::Point(0, old_y - position));
682 void PDFiumEngine::PrePaint() {
683 for (size_t i = 0; i < progressive_paints_.size(); ++i)
684 progressive_paints_[i].painted_ = false;
687 void PDFiumEngine::Paint(const pp::Rect& rect,
688 pp::ImageData* image_data,
689 std::vector<pp::Rect>* ready,
690 std::vector<pp::Rect>* pending) {
691 pp::Rect leftover = rect;
692 for (size_t i = 0; i < visible_pages_.size(); ++i) {
693 int index = visible_pages_[i];
694 pp::Rect page_rect = pages_[index]->rect();
695 // Convert the current page's rectangle to screen rectangle. We do this
696 // instead of the reverse (converting the dirty rectangle from screen to
697 // page coordinates) because then we'd have to convert back to screen
698 // coordinates, and the rounding errors sometime leave pixels dirty or even
699 // move the text up or down a pixel when zoomed.
700 pp::Rect page_rect_in_screen = GetPageScreenRect(index);
701 pp::Rect dirty_in_screen = page_rect_in_screen.Intersect(leftover);
702 if (dirty_in_screen.IsEmpty())
705 leftover = leftover.Subtract(dirty_in_screen);
707 if (pages_[index]->available()) {
708 int progressive = GetProgressiveIndex(index);
709 if (progressive != -1 &&
710 progressive_paints_[progressive].rect != dirty_in_screen) {
711 // The PDFium code can only handle one progressive paint at a time, so
712 // queue this up. Previously we used to merge the rects when this
713 // happened, but it made scrolling up on complex PDFs very slow since
714 // there would be a damaged rect at the top (from scroll) and at the
715 // bottom (from toolbar).
716 pending->push_back(dirty_in_screen);
720 if (progressive == -1) {
721 progressive = StartPaint(index, dirty_in_screen);
722 progressive_paint_timeout_ = kMaxInitialProgressivePaintTimeMs;
724 progressive_paint_timeout_ = kMaxProgressivePaintTimeMs;
727 progressive_paints_[progressive].painted_ = true;
728 if (ContinuePaint(progressive, image_data)) {
729 FinishPaint(progressive, image_data);
730 ready->push_back(dirty_in_screen);
732 pending->push_back(dirty_in_screen);
735 PaintUnavailablePage(index, dirty_in_screen, image_data);
736 ready->push_back(dirty_in_screen);
741 void PDFiumEngine::PostPaint() {
742 for (size_t i = 0; i < progressive_paints_.size(); ++i) {
743 if (progressive_paints_[i].painted_)
746 // This rectangle must have been merged with another one, that's why we
747 // weren't asked to paint it. Remove it or otherwise we'll never finish
749 FPDF_RenderPage_Close(
750 pages_[progressive_paints_[i].page_index]->GetPage());
751 FPDFBitmap_Destroy(progressive_paints_[i].bitmap);
752 progressive_paints_.erase(progressive_paints_.begin() + i);
757 bool PDFiumEngine::HandleDocumentLoad(const pp::URLLoader& loader) {
758 password_tries_remaining_ = kMaxPasswordTries;
759 return doc_loader_.Init(loader, url_, headers_);
762 pp::Instance* PDFiumEngine::GetPluginInstance() {
763 return client_->GetPluginInstance();
766 pp::URLLoader PDFiumEngine::CreateURLLoader() {
767 return client_->CreateURLLoader();
770 void PDFiumEngine::AppendPage(PDFEngine* engine, int index) {
771 // Unload and delete the blank page before appending.
772 pages_[index]->Unload();
773 pages_[index]->set_calculated_links(false);
774 pp::Size curr_page_size = GetPageSize(index);
775 FPDFPage_Delete(doc_, index);
776 FPDF_ImportPages(doc_,
777 static_cast<PDFiumEngine*>(engine)->doc(),
780 pp::Size new_page_size = GetPageSize(index);
781 if (curr_page_size != new_page_size)
783 client_->Invalidate(GetPageScreenRect(index));
786 pp::Point PDFiumEngine::GetScrollPosition() {
790 void PDFiumEngine::SetScrollPosition(const pp::Point& position) {
791 position_ = position;
794 bool PDFiumEngine::IsProgressiveLoad() {
795 return doc_loader_.is_partial_document();
798 void PDFiumEngine::OnPartialDocumentLoaded() {
799 file_access_.m_FileLen = doc_loader_.document_size();
800 fpdf_availability_ = FPDFAvail_Create(&file_availability_, &file_access_);
801 DCHECK(fpdf_availability_);
803 // Currently engine does not deal efficiently with some non-linearized files.
804 // See http://code.google.com/p/chromium/issues/detail?id=59400
805 // To improve user experience we download entire file for non-linearized PDF.
806 if (!FPDFAvail_IsLinearized(fpdf_availability_)) {
807 doc_loader_.RequestData(0, doc_loader_.document_size());
814 void PDFiumEngine::OnPendingRequestComplete() {
815 if (!doc_ || !form_) {
820 // LoadDocument() will result in |pending_pages_| being reset so there's no
821 // need to run the code below in that case.
822 bool update_pages = false;
823 std::vector<int> still_pending;
824 for (size_t i = 0; i < pending_pages_.size(); ++i) {
825 if (CheckPageAvailable(pending_pages_[i], &still_pending)) {
827 if (IsPageVisible(pending_pages_[i]))
828 client_->Invalidate(GetPageScreenRect(pending_pages_[i]));
831 pending_pages_.swap(still_pending);
836 void PDFiumEngine::OnNewDataAvailable() {
837 client_->DocumentLoadProgress(doc_loader_.GetAvailableData(),
838 doc_loader_.document_size());
841 void PDFiumEngine::OnDocumentComplete() {
842 if (!doc_ || !form_) {
843 file_access_.m_FileLen = doc_loader_.document_size();
848 bool need_update = false;
849 for (size_t i = 0; i < pages_.size(); ++i) {
850 if (pages_[i]->available())
853 pages_[i]->set_available(true);
854 // We still need to call IsPageAvail() even if the whole document is
855 // already downloaded.
856 FPDFAvail_IsPageAvail(fpdf_availability_, i, &download_hints_);
858 if (IsPageVisible(i))
859 client_->Invalidate(GetPageScreenRect(i));
864 FinishLoadingDocument();
867 void PDFiumEngine::FinishLoadingDocument() {
868 DCHECK(doc_loader_.IsDocumentComplete() && doc_);
869 if (called_do_document_action_)
871 called_do_document_action_ = true;
873 // These can only be called now, as the JS might end up needing a page.
874 FORM_DoDocumentJSAction(form_);
875 FORM_DoDocumentOpenAction(form_);
876 if (most_visible_page_ != -1) {
877 FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();
878 FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);
881 if (doc_) // This can only happen if loading |doc_| fails.
882 client_->DocumentLoadComplete(pages_.size());
885 void PDFiumEngine::UnsupportedFeature(int type) {
888 case FPDF_UNSP_DOC_XFAFORM:
891 case FPDF_UNSP_DOC_PORTABLECOLLECTION:
892 feature = "Portfolios_Packages";
894 case FPDF_UNSP_DOC_ATTACHMENT:
895 case FPDF_UNSP_ANNOT_ATTACHMENT:
896 feature = "Attachment";
898 case FPDF_UNSP_DOC_SECURITY:
899 feature = "Rights_Management";
901 case FPDF_UNSP_DOC_SHAREDREVIEW:
902 feature = "Shared_Review";
904 case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT:
905 case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM:
906 case FPDF_UNSP_DOC_SHAREDFORM_EMAIL:
907 feature = "Shared_Form";
909 case FPDF_UNSP_ANNOT_3DANNOT:
912 case FPDF_UNSP_ANNOT_MOVIE:
915 case FPDF_UNSP_ANNOT_SOUND:
918 case FPDF_UNSP_ANNOT_SCREEN_MEDIA:
919 case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA:
922 case FPDF_UNSP_ANNOT_SIG:
923 feature = "Digital_Signature";
926 client_->DocumentHasUnsupportedFeature(feature);
929 void PDFiumEngine::ContinueFind(int32_t result) {
930 StartFind(current_find_text_.c_str(), !!result);
933 bool PDFiumEngine::HandleEvent(const pp::InputEvent& event) {
934 DCHECK(!defer_page_unload_);
935 defer_page_unload_ = true;
937 switch (event.GetType()) {
938 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
939 rv = OnMouseDown(pp::MouseInputEvent(event));
941 case PP_INPUTEVENT_TYPE_MOUSEUP:
942 rv = OnMouseUp(pp::MouseInputEvent(event));
944 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
945 rv = OnMouseMove(pp::MouseInputEvent(event));
947 case PP_INPUTEVENT_TYPE_KEYDOWN:
948 rv = OnKeyDown(pp::KeyboardInputEvent(event));
950 case PP_INPUTEVENT_TYPE_KEYUP:
951 rv = OnKeyUp(pp::KeyboardInputEvent(event));
953 case PP_INPUTEVENT_TYPE_CHAR:
954 rv = OnChar(pp::KeyboardInputEvent(event));
960 DCHECK(defer_page_unload_);
961 defer_page_unload_ = false;
962 for (size_t i = 0; i < deferred_page_unloads_.size(); ++i)
963 pages_[deferred_page_unloads_[i]]->Unload();
964 deferred_page_unloads_.clear();
968 uint32_t PDFiumEngine::QuerySupportedPrintOutputFormats() {
969 if (!HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))
971 return PP_PRINTOUTPUTFORMAT_PDF;
974 void PDFiumEngine::PrintBegin() {
975 FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WP);
978 pp::Resource PDFiumEngine::PrintPages(
979 const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
980 const PP_PrintSettings_Dev& print_settings) {
981 if (HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))
982 return PrintPagesAsPDF(page_ranges, page_range_count, print_settings);
983 else if (HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY))
984 return PrintPagesAsRasterPDF(page_ranges, page_range_count, print_settings);
985 return pp::Resource();
988 pp::Buffer_Dev PDFiumEngine::PrintPagesAsRasterPDF(
989 const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
990 const PP_PrintSettings_Dev& print_settings) {
991 if (!page_range_count)
992 return pp::Buffer_Dev();
994 // If document is not downloaded yet, disable printing.
995 if (doc_ && !doc_loader_.IsDocumentComplete())
996 return pp::Buffer_Dev();
998 FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
1000 return pp::Buffer_Dev();
1002 SaveSelectedFormForPrint();
1004 std::vector<PDFiumPage> pages_to_print;
1005 // width and height of source PDF pages.
1006 std::vector<std::pair<double, double> > source_page_sizes;
1007 // Collect pages to print and sizes of source pages.
1008 std::vector<uint32_t> page_numbers =
1009 GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);
1010 for (size_t i = 0; i < page_numbers.size(); ++i) {
1011 uint32_t page_number = page_numbers[i];
1012 FPDF_PAGE pdf_page = FPDF_LoadPage(doc_, page_number);
1013 double source_page_width = FPDF_GetPageWidth(pdf_page);
1014 double source_page_height = FPDF_GetPageHeight(pdf_page);
1015 source_page_sizes.push_back(std::make_pair(source_page_width,
1016 source_page_height));
1018 int width_in_pixels = ConvertUnit(source_page_width,
1019 static_cast<int>(kPointsPerInch),
1020 print_settings.dpi);
1021 int height_in_pixels = ConvertUnit(source_page_height,
1022 static_cast<int>(kPointsPerInch),
1023 print_settings.dpi);
1025 pp::Rect rect(width_in_pixels, height_in_pixels);
1026 pages_to_print.push_back(PDFiumPage(this, page_number, rect, true));
1027 FPDF_ClosePage(pdf_page);
1030 #if defined(OS_LINUX)
1031 g_last_instance_id = client_->GetPluginInstance()->pp_instance();
1035 for (; i < pages_to_print.size(); ++i) {
1036 double source_page_width = source_page_sizes[i].first;
1037 double source_page_height = source_page_sizes[i].second;
1038 const pp::Size& bitmap_size(pages_to_print[i].rect().size());
1040 // Use temp_doc to compress image by saving PDF to buffer.
1041 FPDF_DOCUMENT temp_doc = FPDF_CreateNewDocument();
1045 FPDF_PAGE output_page = FPDFPage_New(temp_doc, 0, source_page_width,
1046 source_page_height);
1048 pp::ImageData image = pp::ImageData(client_->GetPluginInstance(),
1049 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
1053 FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(bitmap_size.width(),
1054 bitmap_size.height(),
1060 FPDFBitmap_FillRect(bitmap, 0, 0, bitmap_size.width(),
1061 bitmap_size.height(), 255, 255, 255, 255);
1063 pp::Rect page_rect = pages_to_print[i].rect();
1064 FPDF_RenderPageBitmap(bitmap, pages_to_print[i].GetPrintPage(),
1065 page_rect.x(), page_rect.y(),
1066 page_rect.width(), page_rect.height(),
1067 print_settings.orientation,
1068 FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
1070 double ratio_x = (static_cast<double>(bitmap_size.width()) *
1071 kPointsPerInch) / print_settings.dpi;
1072 double ratio_y = (static_cast<double>(bitmap_size.height()) *
1073 kPointsPerInch) / print_settings.dpi;
1075 // Add the bitmap to an image object and add the image object to the output
1077 FPDF_PAGEOBJECT img_obj = FPDFPageObj_NewImgeObj(output_doc);
1078 FPDFImageObj_SetBitmap(&output_page, 1, img_obj, bitmap);
1079 FPDFImageObj_SetMatrix(img_obj, ratio_x, 0, 0, ratio_y, 0, 0);
1080 FPDFPage_InsertObject(output_page, img_obj);
1081 FPDFPage_GenerateContent(output_page);
1082 FPDF_ClosePage(output_page);
1084 pages_to_print[i].ClosePrintPage();
1085 FPDFBitmap_Destroy(bitmap);
1087 pp::Buffer_Dev buffer = GetFlattenedPrintData(temp_doc);
1088 FPDF_CloseDocument(temp_doc);
1090 PDFiumMemBufferFileRead file_read(buffer.data(), buffer.size());
1091 temp_doc = FPDF_LoadCustomDocument(&file_read, NULL);
1095 FPDF_BOOL imported = FPDF_ImportPages(output_doc, temp_doc, "1", i);
1096 FPDF_CloseDocument(temp_doc);
1101 pp::Buffer_Dev buffer;
1102 if (i == pages_to_print.size()) {
1103 FPDF_CopyViewerPreferences(output_doc, doc_);
1104 FitContentsToPrintableAreaIfRequired(output_doc, print_settings);
1105 // Now flatten all the output pages.
1106 buffer = GetFlattenedPrintData(output_doc);
1108 FPDF_CloseDocument(output_doc);
1112 pp::Buffer_Dev PDFiumEngine::GetFlattenedPrintData(const FPDF_DOCUMENT& doc) {
1113 int page_count = FPDF_GetPageCount(doc);
1114 bool flatten_succeeded = true;
1115 for (int i = 0; i < page_count; ++i) {
1116 FPDF_PAGE page = FPDF_LoadPage(doc, i);
1119 int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT);
1120 FPDF_ClosePage(page);
1121 if (flatten_ret == FLATTEN_FAIL) {
1122 flatten_succeeded = false;
1126 flatten_succeeded = false;
1130 if (!flatten_succeeded) {
1131 FPDF_CloseDocument(doc);
1132 return pp::Buffer_Dev();
1135 pp::Buffer_Dev buffer;
1136 PDFiumMemBufferFileWrite output_file_write;
1137 if (FPDF_SaveAsCopy(doc, &output_file_write, 0)) {
1138 buffer = pp::Buffer_Dev(
1139 client_->GetPluginInstance(), output_file_write.size());
1140 if (!buffer.is_null()) {
1141 memcpy(buffer.data(), output_file_write.buffer().c_str(),
1142 output_file_write.size());
1148 pp::Buffer_Dev PDFiumEngine::PrintPagesAsPDF(
1149 const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count,
1150 const PP_PrintSettings_Dev& print_settings) {
1151 if (!page_range_count)
1152 return pp::Buffer_Dev();
1155 FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument();
1157 return pp::Buffer_Dev();
1159 SaveSelectedFormForPrint();
1161 std::string page_number_str;
1162 for (uint32_t index = 0; index < page_range_count; ++index) {
1163 if (!page_number_str.empty())
1164 page_number_str.append(",");
1165 page_number_str.append(
1166 base::IntToString(page_ranges[index].first_page_number + 1));
1167 if (page_ranges[index].first_page_number !=
1168 page_ranges[index].last_page_number) {
1169 page_number_str.append("-");
1170 page_number_str.append(
1171 base::IntToString(page_ranges[index].last_page_number + 1));
1175 std::vector<uint32_t> page_numbers =
1176 GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count);
1177 for (size_t i = 0; i < page_numbers.size(); ++i) {
1178 uint32_t page_number = page_numbers[i];
1179 pages_[page_number]->GetPage();
1180 if (!IsPageVisible(page_numbers[i]))
1181 pages_[page_number]->Unload();
1184 FPDF_CopyViewerPreferences(output_doc, doc_);
1185 if (!FPDF_ImportPages(output_doc, doc_, page_number_str.c_str(), 0)) {
1186 FPDF_CloseDocument(output_doc);
1187 return pp::Buffer_Dev();
1190 FitContentsToPrintableAreaIfRequired(output_doc, print_settings);
1192 // Now flatten all the output pages.
1193 pp::Buffer_Dev buffer = GetFlattenedPrintData(output_doc);
1194 FPDF_CloseDocument(output_doc);
1198 void PDFiumEngine::FitContentsToPrintableAreaIfRequired(
1199 const FPDF_DOCUMENT& doc, const PP_PrintSettings_Dev& print_settings) {
1200 // Check to see if we need to fit pdf contents to printer paper size.
1201 if (print_settings.print_scaling_option !=
1202 PP_PRINTSCALINGOPTION_SOURCE_SIZE) {
1203 int num_pages = FPDF_GetPageCount(doc);
1204 // In-place transformation is more efficient than creating a new
1205 // transformed document from the source document. Therefore, transform
1206 // every page to fit the contents in the selected printer paper.
1207 for (int i = 0; i < num_pages; ++i) {
1208 FPDF_PAGE page = FPDF_LoadPage(doc, i);
1209 TransformPDFPageForPrinting(page, print_settings);
1210 FPDF_ClosePage(page);
1215 void PDFiumEngine::SaveSelectedFormForPrint() {
1216 FORM_ForceToKillFocus(form_);
1217 client_->FormTextFieldFocusChange(false);
1220 void PDFiumEngine::PrintEnd() {
1221 FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP);
1224 PDFiumPage::Area PDFiumEngine::GetCharIndex(
1225 const pp::MouseInputEvent& event, int* page_index,
1226 int* char_index, PDFiumPage::LinkTarget* target) {
1227 // First figure out which page this is in.
1228 pp::Point mouse_point = event.GetPosition();
1230 static_cast<int>((mouse_point.x() + position_.x()) / current_zoom_),
1231 static_cast<int>((mouse_point.y() + position_.y()) / current_zoom_));
1232 return GetCharIndex(point, page_index, char_index, target);
1235 PDFiumPage::Area PDFiumEngine::GetCharIndex(
1236 const pp::Point& point,
1239 PDFiumPage::LinkTarget* target) {
1241 for (size_t i = 0; i < visible_pages_.size(); ++i) {
1242 if (pages_[visible_pages_[i]]->rect().Contains(point)) {
1243 page = visible_pages_[i];
1248 return PDFiumPage::NONSELECTABLE_AREA;
1250 // If the page hasn't finished rendering, calling into the page sometimes
1252 for (size_t i = 0; i < progressive_paints_.size(); ++i) {
1253 if (progressive_paints_[i].page_index == page)
1254 return PDFiumPage::NONSELECTABLE_AREA;
1258 return pages_[page]->GetCharIndex(point, current_rotation_, char_index,
1262 bool PDFiumEngine::OnMouseDown(const pp::MouseInputEvent& event) {
1263 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)
1266 SelectionChangeInvalidator selection_invalidator(this);
1269 int page_index = -1;
1270 int char_index = -1;
1271 PDFiumPage::LinkTarget target;
1272 PDFiumPage::Area area = GetCharIndex(event, &page_index,
1273 &char_index, &target);
1274 if (area == PDFiumPage::WEBLINK_AREA) {
1275 bool open_in_new_tab = !!(event.GetModifiers() & kDefaultKeyModifier);
1276 client_->NavigateTo(target.url, open_in_new_tab);
1277 client_->FormTextFieldFocusChange(false);
1281 if (area == PDFiumPage::DOCLINK_AREA) {
1282 client_->ScrollToPage(target.page);
1283 client_->FormTextFieldFocusChange(false);
1287 if (page_index != -1) {
1288 last_page_mouse_down_ = page_index;
1289 double page_x, page_y;
1290 pp::Point point = event.GetPosition();
1291 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
1293 FORM_OnLButtonDown(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
1294 int control = FPDPage_HasFormFieldAtPoint(
1295 form_, pages_[page_index]->GetPage(), page_x, page_y);
1296 if (control > FPDF_FORMFIELD_UNKNOWN) { // returns -1 sometimes...
1297 client_->FormTextFieldFocusChange(control == FPDF_FORMFIELD_TEXTFIELD ||
1298 control == FPDF_FORMFIELD_COMBOBOX);
1299 return true; // Return now before we get into the selection code.
1303 client_->FormTextFieldFocusChange(false);
1305 if (area != PDFiumPage::TEXT_AREA)
1306 return true; // Return true so WebKit doesn't do its own highlighting.
1308 if (event.GetClickCount() == 1) {
1309 OnSingleClick(page_index, char_index);
1310 } else if (event.GetClickCount() == 2 ||
1311 event.GetClickCount() == 3) {
1312 OnMultipleClick(event.GetClickCount(), page_index, char_index);
1318 void PDFiumEngine::OnSingleClick(int page_index, int char_index) {
1320 selection_.push_back(PDFiumRange(pages_[page_index], char_index, 0));
1323 void PDFiumEngine::OnMultipleClick(int click_count,
1326 // It would be more efficient if the SDK could support finding a space, but
1328 int start_index = char_index;
1330 base::char16 cur = pages_[page_index]->GetCharAtIndex(start_index);
1331 // For double click, we want to select one word so we look for whitespace
1332 // boundaries. For triple click, we want the whole line.
1333 if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))
1335 } while (--start_index >= 0);
1339 int end_index = char_index;
1340 int total = pages_[page_index]->GetCharCount();
1341 while (end_index++ <= total) {
1342 base::char16 cur = pages_[page_index]->GetCharAtIndex(end_index);
1343 if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t')))
1347 selection_.push_back(PDFiumRange(
1348 pages_[page_index], start_index, end_index - start_index));
1351 bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) {
1352 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT)
1355 int page_index = -1;
1356 int char_index = -1;
1357 GetCharIndex(event, &page_index, &char_index, NULL);
1358 if (page_index != -1) {
1359 double page_x, page_y;
1360 pp::Point point = event.GetPosition();
1361 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
1363 form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
1373 bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) {
1374 int page_index = -1;
1375 int char_index = -1;
1376 PDFiumPage::Area area = GetCharIndex(event, &page_index, &char_index, NULL);
1378 PP_CursorType_Dev cursor;
1380 case PDFiumPage::TEXT_AREA:
1381 cursor = PP_CURSORTYPE_IBEAM;
1383 case PDFiumPage::WEBLINK_AREA:
1384 case PDFiumPage::DOCLINK_AREA:
1385 cursor = PP_CURSORTYPE_HAND;
1387 case PDFiumPage::NONSELECTABLE_AREA:
1389 cursor = PP_CURSORTYPE_POINTER;
1393 if (page_index != -1) {
1394 double page_x, page_y;
1395 pp::Point point = event.GetPosition();
1396 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y);
1398 FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y);
1399 int control = FPDPage_HasFormFieldAtPoint(
1400 form_, pages_[page_index]->GetPage(), page_x, page_y);
1402 case FPDF_FORMFIELD_PUSHBUTTON:
1403 case FPDF_FORMFIELD_CHECKBOX:
1404 case FPDF_FORMFIELD_RADIOBUTTON:
1405 case FPDF_FORMFIELD_COMBOBOX:
1406 case FPDF_FORMFIELD_LISTBOX:
1407 cursor = PP_CURSORTYPE_HAND;
1409 case FPDF_FORMFIELD_TEXTFIELD:
1410 cursor = PP_CURSORTYPE_IBEAM;
1417 client_->UpdateCursor(cursor);
1418 pp::Point point = event.GetPosition();
1419 std::string url = GetLinkAtPosition(event.GetPosition());
1420 if (url != link_under_cursor_) {
1421 link_under_cursor_ = url;
1422 pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str());
1424 // No need to swallow the event, since this might interfere with the
1425 // scrollbars if the user is dragging them.
1429 // We're selecting but right now we're not over text, so don't change the
1430 // current selection.
1431 if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA &&
1432 area != PDFiumPage::DOCLINK_AREA) {
1436 SelectionChangeInvalidator selection_invalidator(this);
1438 // Check if the user has descreased their selection area and we need to remove
1439 // pages from selection_.
1440 for (size_t i = 0; i < selection_.size(); ++i) {
1441 if (selection_[i].page_index() == page_index) {
1442 // There should be no other pages after this.
1443 selection_.erase(selection_.begin() + i + 1, selection_.end());
1448 if (selection_.size() == 0)
1451 int last = selection_.size() - 1;
1452 if (selection_[last].page_index() == page_index) {
1453 // Selecting within a page.
1455 if (char_index >= selection_[last].char_index()) {
1456 // Selecting forward.
1457 count = char_index - selection_[last].char_index() + 1;
1459 count = char_index - selection_[last].char_index() - 1;
1461 selection_[last].SetCharCount(count);
1462 } else if (selection_[last].page_index() < page_index) {
1463 // Selecting into the next page.
1465 // First make sure that there are no gaps in selection, i.e. if mousedown on
1466 // page one but we only get mousemove over page three, we want page two.
1467 for (int i = selection_[last].page_index() + 1; i < page_index; ++i) {
1468 selection_.push_back(PDFiumRange(pages_[i], 0,
1469 pages_[i]->GetCharCount()));
1472 int count = pages_[selection_[last].page_index()]->GetCharCount();
1473 selection_[last].SetCharCount(count - selection_[last].char_index());
1474 selection_.push_back(PDFiumRange(pages_[page_index], 0, char_index));
1476 // Selecting into the previous page.
1477 selection_[last].SetCharCount(-selection_[last].char_index());
1479 // First make sure that there are no gaps in selection, i.e. if mousedown on
1480 // page three but we only get mousemove over page one, we want page two.
1481 for (int i = selection_[last].page_index() - 1; i > page_index; --i) {
1482 selection_.push_back(PDFiumRange(pages_[i], 0,
1483 pages_[i]->GetCharCount()));
1486 int count = pages_[page_index]->GetCharCount();
1487 selection_.push_back(
1488 PDFiumRange(pages_[page_index], count, count - char_index));
1494 bool PDFiumEngine::OnKeyDown(const pp::KeyboardInputEvent& event) {
1495 if (last_page_mouse_down_ == -1)
1498 bool rv = !!FORM_OnKeyDown(
1499 form_, pages_[last_page_mouse_down_]->GetPage(),
1500 event.GetKeyCode(), event.GetModifiers());
1502 if (event.GetKeyCode() == ui::VKEY_BACK ||
1503 event.GetKeyCode() == ui::VKEY_ESCAPE) {
1504 // Chrome doesn't send char events for backspace or escape keys, see
1505 // PlatformKeyboardEventBuilder::isCharacterKey() and
1506 // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&revision=31805
1507 // for more information. So just fake one since PDFium uses it.
1509 str.push_back(event.GetKeyCode());
1510 pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent(
1511 client_->GetPluginInstance(),
1512 PP_INPUTEVENT_TYPE_CHAR,
1513 event.GetTimeStamp(),
1514 event.GetModifiers(),
1517 OnChar(synthesized);
1523 bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) {
1524 if (last_page_mouse_down_ == -1)
1527 return !!FORM_OnKeyUp(
1528 form_, pages_[last_page_mouse_down_]->GetPage(),
1529 event.GetKeyCode(), event.GetModifiers());
1532 bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) {
1533 if (last_page_mouse_down_ == -1)
1536 base::string16 str = base::UTF8ToUTF16(event.GetCharacterText().AsString());
1537 return !!FORM_OnChar(
1538 form_, pages_[last_page_mouse_down_]->GetPage(),
1540 event.GetModifiers());
1543 void PDFiumEngine::StartFind(const char* text, bool case_sensitive) {
1544 // We can get a call to StartFind before we have any page information (i.e.
1545 // before the first call to LoadDocument has happened). Handle this case.
1549 bool first_search = false;
1550 int character_to_start_searching_from = 0;
1551 if (current_find_text_ != text) { // First time we search for this text.
1552 first_search = true;
1553 std::vector<PDFiumRange> old_selection = selection_;
1555 current_find_text_ = text;
1557 if (old_selection.empty()) {
1558 // Start searching from the beginning of the document.
1559 next_page_to_search_ = 0;
1560 last_page_to_search_ = pages_.size() - 1;
1561 last_character_index_to_search_ = -1;
1563 // There's a current selection, so start from it.
1564 next_page_to_search_ = old_selection[0].page_index();
1565 last_character_index_to_search_ = old_selection[0].char_index();
1566 character_to_start_searching_from = old_selection[0].char_index();
1567 last_page_to_search_ = next_page_to_search_;
1571 int current_page = next_page_to_search_;
1573 if (pages_[current_page]->available()) {
1574 base::string16 str = base::UTF8ToUTF16(text);
1575 // Don't use PDFium to search for now, since it doesn't support unicode text.
1576 // Leave the code for now to avoid bit-rot, in case it's fixed later.
1579 str, case_sensitive, first_search, character_to_start_searching_from,
1583 str, case_sensitive, first_search, character_to_start_searching_from,
1587 if (!IsPageVisible(current_page))
1588 pages_[current_page]->Unload();
1591 if (next_page_to_search_ != last_page_to_search_ ||
1592 (first_search && last_character_index_to_search_ != -1)) {
1593 ++next_page_to_search_;
1596 if (next_page_to_search_ == static_cast<int>(pages_.size()))
1597 next_page_to_search_ = 0;
1598 // If there's only one page in the document and we start searching midway,
1599 // then we'll want to search the page one more time.
1600 bool end_of_search =
1601 next_page_to_search_ == last_page_to_search_ &&
1602 // Only one page but didn't start midway.
1603 ((pages_.size() == 1 && last_character_index_to_search_ == -1) ||
1604 // Started midway, but only 1 page and we already looped around.
1605 (pages_.size() == 1 && !first_search) ||
1606 // Started midway, and we've just looped around.
1607 (pages_.size() > 1 && current_page == next_page_to_search_));
1609 if (end_of_search) {
1610 // Send the final notification.
1611 client_->NotifyNumberOfFindResultsChanged(find_results_.size(), true);
1613 pp::CompletionCallback callback =
1614 find_factory_.NewCallback(&PDFiumEngine::ContinueFind);
1615 pp::Module::Get()->core()->CallOnMainThread(
1616 0, callback, case_sensitive ? 1 : 0);
1620 void PDFiumEngine::SearchUsingPDFium(const base::string16& term,
1621 bool case_sensitive,
1623 int character_to_start_searching_from,
1625 // Find all the matches in the current page.
1626 unsigned long flags = case_sensitive ? FPDF_MATCHCASE : 0;
1627 FPDF_SCHHANDLE find = FPDFText_FindStart(
1628 pages_[current_page]->GetTextPage(),
1629 reinterpret_cast<const unsigned short*>(term.c_str()),
1630 flags, character_to_start_searching_from);
1632 // Note: since we search one page at a time, we don't find matches across
1633 // page boundaries. We could do this manually ourself, but it seems low
1634 // priority since Reader itself doesn't do it.
1635 while (FPDFText_FindNext(find)) {
1636 PDFiumRange result(pages_[current_page],
1637 FPDFText_GetSchResultIndex(find),
1638 FPDFText_GetSchCount(find));
1640 if (!first_search &&
1641 last_character_index_to_search_ != -1 &&
1642 result.page_index() == last_page_to_search_ &&
1643 result.char_index() >= last_character_index_to_search_) {
1647 AddFindResult(result);
1650 FPDFText_FindClose(find);
1653 void PDFiumEngine::SearchUsingICU(const base::string16& term,
1654 bool case_sensitive,
1656 int character_to_start_searching_from,
1658 base::string16 page_text;
1659 int text_length = pages_[current_page]->GetCharCount();
1660 if (character_to_start_searching_from) {
1661 text_length -= character_to_start_searching_from;
1662 } else if (!first_search &&
1663 last_character_index_to_search_ != -1 &&
1664 current_page == last_page_to_search_) {
1665 text_length = last_character_index_to_search_;
1667 if (text_length <= 0)
1669 unsigned short* data =
1670 reinterpret_cast<unsigned short*>(WriteInto(&page_text, text_length + 1));
1671 FPDFText_GetText(pages_[current_page]->GetTextPage(),
1672 character_to_start_searching_from,
1675 std::vector<PDFEngine::Client::SearchStringResult> results;
1676 client_->SearchString(
1677 page_text.c_str(), term.c_str(), case_sensitive, &results);
1678 for (size_t i = 0; i < results.size(); ++i) {
1679 // Need to map the indexes from the page text, which may have generated
1680 // characters like space etc, to character indices from the page.
1681 int temp_start = results[i].start_index + character_to_start_searching_from;
1682 int start = FPDFText_GetCharIndexFromTextIndex(
1683 pages_[current_page]->GetTextPage(), temp_start);
1684 int end = FPDFText_GetCharIndexFromTextIndex(
1685 pages_[current_page]->GetTextPage(),
1686 temp_start + results[i].length);
1687 AddFindResult(PDFiumRange(pages_[current_page], start, end - start));
1691 void PDFiumEngine::AddFindResult(const PDFiumRange& result) {
1692 // Figure out where to insert the new location, since we could have
1693 // started searching midway and now we wrapped.
1695 int page_index = result.page_index();
1696 int char_index = result.char_index();
1697 for (i = 0; i < find_results_.size(); ++i) {
1698 if (find_results_[i].page_index() > page_index ||
1699 (find_results_[i].page_index() == page_index &&
1700 find_results_[i].char_index() > char_index)) {
1704 find_results_.insert(find_results_.begin() + i, result);
1707 if (current_find_index_ == -1) {
1708 // Select the first match.
1709 SelectFindResult(true);
1710 } else if (static_cast<int>(i) <= current_find_index_) {
1711 // Update the current match index
1712 current_find_index_++;
1713 client_->NotifySelectedFindResultChanged(current_find_index_);
1715 client_->NotifyNumberOfFindResultsChanged(find_results_.size(), false);
1718 bool PDFiumEngine::SelectFindResult(bool forward) {
1719 if (find_results_.empty()) {
1724 SelectionChangeInvalidator selection_invalidator(this);
1726 // Move back/forward through the search locations we previously found.
1728 if (++current_find_index_ == static_cast<int>(find_results_.size()))
1729 current_find_index_ = 0;
1731 if (--current_find_index_ < 0) {
1732 current_find_index_ = find_results_.size() - 1;
1736 // Update the selection before telling the client to scroll, since it could
1739 selection_.push_back(find_results_[current_find_index_]);
1741 // If the result is not in view, scroll to it.
1743 pp::Rect bounding_rect;
1744 pp::Rect visible_rect = GetVisibleRect();
1745 // Use zoom of 1.0 since visible_rect is without zoom.
1746 std::vector<pp::Rect> rects = find_results_[current_find_index_].
1747 GetScreenRects(pp::Point(), 1.0, current_rotation_);
1748 for (i = 0; i < rects.size(); ++i)
1749 bounding_rect = bounding_rect.Union(rects[i]);
1750 if (!visible_rect.Contains(bounding_rect)) {
1751 pp::Point center = bounding_rect.CenterPoint();
1752 // Make the page centered.
1753 int new_y = static_cast<int>(center.y() * current_zoom_) -
1754 static_cast<int>(visible_rect.height() * current_zoom_ / 2);
1757 client_->ScrollToY(new_y);
1759 // Only move horizontally if it's not visible.
1760 if (center.x() < visible_rect.x() || center.x() > visible_rect.right()) {
1761 int new_x = static_cast<int>(center.x() * current_zoom_) -
1762 static_cast<int>(visible_rect.width() * current_zoom_ / 2);
1765 client_->ScrollToX(new_x);
1769 client_->NotifySelectedFindResultChanged(current_find_index_);
1774 void PDFiumEngine::StopFind() {
1775 SelectionChangeInvalidator selection_invalidator(this);
1779 find_results_.clear();
1780 next_page_to_search_ = -1;
1781 last_page_to_search_ = -1;
1782 last_character_index_to_search_ = -1;
1783 current_find_index_ = -1;
1784 current_find_text_.clear();
1786 find_factory_.CancelAll();
1789 void PDFiumEngine::UpdateTickMarks() {
1790 std::vector<pp::Rect> tickmarks;
1791 for (size_t i = 0; i < find_results_.size(); ++i) {
1793 // Always use an origin of 0,0 since scroll positions don't affect tickmark.
1794 std::vector<pp::Rect> rects = find_results_[i].GetScreenRects(
1795 pp::Point(0, 0), current_zoom_, current_rotation_);
1796 for (size_t j = 0; j < rects.size(); ++j)
1797 rect = rect.Union(rects[j]);
1798 tickmarks.push_back(rect);
1801 client_->UpdateTickMarks(tickmarks);
1804 void PDFiumEngine::ZoomUpdated(double new_zoom_level) {
1807 current_zoom_ = new_zoom_level;
1809 CalculateVisiblePages();
1813 void PDFiumEngine::RotateClockwise() {
1814 current_rotation_ = (current_rotation_ + 1) % 4;
1815 InvalidateAllPages();
1818 void PDFiumEngine::RotateCounterclockwise() {
1819 current_rotation_ = (current_rotation_ - 1) % 4;
1820 InvalidateAllPages();
1823 void PDFiumEngine::InvalidateAllPages() {
1825 find_results_.clear();
1830 client_->Invalidate(pp::Rect(plugin_size_));
1833 std::string PDFiumEngine::GetSelectedText() {
1834 base::string16 result;
1835 for (size_t i = 0; i < selection_.size(); ++i) {
1837 selection_[i - 1].page_index() > selection_[i].page_index()) {
1838 result = selection_[i].GetText() + result;
1840 result.append(selection_[i].GetText());
1844 return base::UTF16ToUTF8(result);
1847 std::string PDFiumEngine::GetLinkAtPosition(const pp::Point& point) {
1849 PDFiumPage::LinkTarget target;
1850 PDFiumPage::Area area = GetCharIndex(point, &temp, &temp, &target);
1851 if (area == PDFiumPage::WEBLINK_AREA)
1853 return std::string();
1856 bool PDFiumEngine::IsSelecting() {
1860 bool PDFiumEngine::HasPermission(DocumentPermission permission) const {
1861 switch (permission) {
1862 case PERMISSION_COPY:
1863 return (permissions_ & kPDFPermissionCopyMask) != 0;
1864 case PERMISSION_COPY_ACCESSIBLE:
1865 return (permissions_ & kPDFPermissionCopyAccessibleMask) != 0;
1866 case PERMISSION_PRINT_LOW_QUALITY:
1867 return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0;
1868 case PERMISSION_PRINT_HIGH_QUALITY:
1869 return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0 &&
1870 (permissions_ & kPDFPermissionPrintHighQualityMask) != 0;
1876 void PDFiumEngine::SelectAll() {
1877 SelectionChangeInvalidator selection_invalidator(this);
1880 for (size_t i = 0; i < pages_.size(); ++i)
1881 if (pages_[i]->available()) {
1882 selection_.push_back(PDFiumRange(pages_[i], 0,
1883 pages_[i]->GetCharCount()));
1887 int PDFiumEngine::GetNumberOfPages() {
1888 return pages_.size();
1891 int PDFiumEngine::GetNamedDestinationPage(const std::string& destination) {
1892 // Look for the destination.
1893 FPDF_DEST dest = FPDF_GetNamedDestByName(doc_, destination.c_str());
1895 // Look for a bookmark with the same name.
1896 base::string16 destination_wide = base::UTF8ToUTF16(destination);
1897 FPDF_WIDESTRING destination_pdf_wide =
1898 reinterpret_cast<FPDF_WIDESTRING>(destination_wide.c_str());
1899 FPDF_BOOKMARK bookmark = FPDFBookmark_Find(doc_, destination_pdf_wide);
1902 dest = FPDFBookmark_GetDest(doc_, bookmark);
1904 return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1;
1907 int PDFiumEngine::GetFirstVisiblePage() {
1908 CalculateVisiblePages();
1909 return first_visible_page_;
1912 int PDFiumEngine::GetMostVisiblePage() {
1913 CalculateVisiblePages();
1914 return most_visible_page_;
1917 pp::Rect PDFiumEngine::GetPageRect(int index) {
1918 pp::Rect rc(pages_[index]->rect());
1919 rc.Inset(-kPageShadowLeft, -kPageShadowTop,
1920 -kPageShadowRight, -kPageShadowBottom);
1924 pp::Rect PDFiumEngine::GetPageContentsRect(int index) {
1925 return GetScreenRect(pages_[index]->rect());
1928 void PDFiumEngine::PaintThumbnail(pp::ImageData* image_data, int index) {
1929 FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(
1930 image_data->size().width(), image_data->size().height(),
1931 FPDFBitmap_BGRx, image_data->data(), image_data->stride());
1933 if (pages_[index]->available()) {
1934 FPDFBitmap_FillRect(
1935 bitmap, 0, 0, image_data->size().width(), image_data->size().height(),
1936 255, 255, 255, 255);
1938 FPDF_RenderPageBitmap(
1939 bitmap, pages_[index]->GetPage(), 0, 0, image_data->size().width(),
1940 image_data->size().height(), 0, GetRenderingFlags());
1942 FPDFBitmap_FillRect(
1943 bitmap, 0, 0, image_data->size().width(), image_data->size().height(),
1944 kPendingPageColorR, kPendingPageColorG, kPendingPageColorB,
1945 kPendingPageColorA);
1948 FPDFBitmap_Destroy(bitmap);
1951 void PDFiumEngine::SetGrayscale(bool grayscale) {
1952 render_grayscale_ = grayscale;
1955 void PDFiumEngine::OnCallback(int id) {
1956 if (!timers_.count(id))
1959 timers_[id].second(id);
1960 if (timers_.count(id)) // The callback might delete the timer.
1961 client_->ScheduleCallback(id, timers_[id].first);
1964 std::string PDFiumEngine::GetPageAsJSON(int index) {
1965 if (!(HasPermission(PERMISSION_COPY) ||
1966 HasPermission(PERMISSION_COPY_ACCESSIBLE))) {
1970 if (index < 0 || static_cast<size_t>(index) > pages_.size() - 1)
1973 scoped_ptr<base::Value> node(
1974 pages_[index]->GetAccessibleContentAsValue(current_rotation_));
1975 std::string page_json;
1976 base::JSONWriter::Write(node.get(), &page_json);
1980 bool PDFiumEngine::GetPrintScaling() {
1981 return !!FPDF_VIEWERREF_GetPrintScaling(doc_);
1984 void PDFiumEngine::AppendBlankPages(int num_pages) {
1985 DCHECK(num_pages != 0);
1991 pending_pages_.clear();
1993 // Delete all pages except the first one.
1994 while (pages_.size() > 1) {
1995 delete pages_.back();
1997 FPDFPage_Delete(doc_, pages_.size());
2000 // Calculate document size and all page sizes.
2001 std::vector<pp::Rect> page_rects;
2002 pp::Size page_size = GetPageSize(0);
2003 page_size.Enlarge(kPageShadowLeft + kPageShadowRight,
2004 kPageShadowTop + kPageShadowBottom);
2005 pp::Size old_document_size = document_size_;
2006 document_size_ = pp::Size(page_size.width(), 0);
2007 for (int i = 0; i < num_pages; ++i) {
2009 // Add space for horizontal separator.
2010 document_size_.Enlarge(0, kPageSeparatorThickness);
2013 pp::Rect rect(pp::Point(0, document_size_.height()), page_size);
2014 page_rects.push_back(rect);
2016 document_size_.Enlarge(0, page_size.height());
2019 // Create blank pages.
2020 for (int i = 1; i < num_pages; ++i) {
2021 pp::Rect page_rect(page_rects[i]);
2022 page_rect.Inset(kPageShadowLeft, kPageShadowTop,
2023 kPageShadowRight, kPageShadowBottom);
2024 double width_in_points =
2025 page_rect.width() * kPointsPerInch / kPixelsPerInch;
2026 double height_in_points =
2027 page_rect.height() * kPointsPerInch / kPixelsPerInch;
2028 FPDFPage_New(doc_, i, width_in_points, height_in_points);
2029 pages_.push_back(new PDFiumPage(this, i, page_rect, true));
2032 CalculateVisiblePages();
2033 if (document_size_ != old_document_size)
2034 client_->DocumentSizeUpdated(document_size_);
2037 void PDFiumEngine::LoadDocument() {
2038 // Check if the document is ready for loading. If it isn't just bail for now,
2039 // we will call LoadDocument() again later.
2040 if (!doc_ && !doc_loader_.IsDocumentComplete() &&
2041 !FPDFAvail_IsDocAvail(fpdf_availability_, &download_hints_)) {
2045 // If we're in the middle of getting a password, just return. We will retry
2046 // loading the document after we get the password anyway.
2047 if (getting_password_)
2050 ScopedUnsupportedFeature scoped_unsupported_feature(this);
2051 bool needs_password = false;
2052 if (TryLoadingDoc(false, std::string(), &needs_password)) {
2053 ContinueLoadingDocument(false, std::string());
2057 GetPasswordAndLoad();
2059 client_->DocumentLoadFailed();
2062 bool PDFiumEngine::TryLoadingDoc(bool with_password,
2063 const std::string& password,
2064 bool* needs_password) {
2065 *needs_password = false;
2069 const char* password_cstr = NULL;
2070 if (with_password) {
2071 password_cstr = password.c_str();
2072 password_tries_remaining_--;
2074 if (doc_loader_.IsDocumentComplete())
2075 doc_ = FPDF_LoadCustomDocument(&file_access_, password_cstr);
2077 doc_ = FPDFAvail_GetDocument(fpdf_availability_, password_cstr);
2079 if (!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD)
2080 *needs_password = true;
2082 return doc_ != NULL;
2085 void PDFiumEngine::GetPasswordAndLoad() {
2086 getting_password_ = true;
2087 DCHECK(!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD);
2088 client_->GetDocumentPassword(password_factory_.NewCallbackWithOutput(
2089 &PDFiumEngine::OnGetPasswordComplete));
2092 void PDFiumEngine::OnGetPasswordComplete(int32_t result,
2093 const pp::Var& password) {
2094 getting_password_ = false;
2096 bool password_given = false;
2097 std::string password_text;
2098 if (result == PP_OK && password.is_string()) {
2099 password_text = password.AsString();
2100 if (!password_text.empty())
2101 password_given = true;
2103 ContinueLoadingDocument(password_given, password_text);
2106 void PDFiumEngine::ContinueLoadingDocument(
2108 const std::string& password) {
2109 ScopedUnsupportedFeature scoped_unsupported_feature(this);
2111 bool needs_password = false;
2112 bool loaded = TryLoadingDoc(has_password, password, &needs_password);
2113 bool password_incorrect = !loaded && has_password && needs_password;
2114 if (password_incorrect && password_tries_remaining_ > 0) {
2115 GetPasswordAndLoad();
2120 client_->DocumentLoadFailed();
2124 if (FPDFDoc_GetPageMode(doc_) == PAGEMODE_USEOUTLINES)
2125 client_->DocumentHasUnsupportedFeature("Bookmarks");
2127 permissions_ = FPDF_GetDocPermissions(doc_);
2130 // Only returns 0 when data isn't available. If form data is downloaded, or
2131 // if this isn't a form, returns positive values.
2132 if (!doc_loader_.IsDocumentComplete() &&
2133 !FPDFAvail_IsFormAvail(fpdf_availability_, &download_hints_)) {
2137 form_ = FPDFDOC_InitFormFillEnviroument(
2138 doc_, static_cast<FPDF_FORMFILLINFO*>(this));
2139 FPDF_SetFormFieldHighlightColor(form_, 0, kFormHighlightColor);
2140 FPDF_SetFormFieldHighlightAlpha(form_, kFormHighlightAlpha);
2143 if (!doc_loader_.IsDocumentComplete()) {
2144 // Check if the first page is available. In a linearized PDF, that is not
2145 // always page 0. Doing this gives us the default page size, since when the
2146 // document is available, the first page is available as well.
2147 CheckPageAvailable(FPDFAvail_GetFirstPageNum(doc_), &pending_pages_);
2150 LoadPageInfo(false);
2152 if (doc_loader_.IsDocumentComplete())
2153 FinishLoadingDocument();
2156 void PDFiumEngine::LoadPageInfo(bool reload) {
2157 pending_pages_.clear();
2158 pp::Size old_document_size = document_size_;
2159 document_size_ = pp::Size();
2160 std::vector<pp::Rect> page_rects;
2161 int page_count = FPDF_GetPageCount(doc_);
2162 bool doc_complete = doc_loader_.IsDocumentComplete();
2163 for (int i = 0; i < page_count; ++i) {
2165 // Add space for horizontal separator.
2166 document_size_.Enlarge(0, kPageSeparatorThickness);
2169 // Get page availability. If reload==false, and document is not loaded yet
2170 // (we are using async loading) - mark all pages as unavailable.
2171 // If reload==true (we have document constructed already), get page
2172 // availability flag from already existing PDFiumPage class.
2173 bool page_available = reload ? pages_[i]->available() : doc_complete;
2175 pp::Size size = page_available ? GetPageSize(i) : default_page_size_;
2176 size.Enlarge(kPageShadowLeft + kPageShadowRight,
2177 kPageShadowTop + kPageShadowBottom);
2178 pp::Rect rect(pp::Point(0, document_size_.height()), size);
2179 page_rects.push_back(rect);
2181 if (size.width() > document_size_.width())
2182 document_size_.set_width(size.width());
2184 document_size_.Enlarge(0, size.height());
2187 for (int i = 0; i < page_count; ++i) {
2188 // Center pages relative to the entire document.
2189 page_rects[i].set_x((document_size_.width() - page_rects[i].width()) / 2);
2190 pp::Rect page_rect(page_rects[i]);
2191 page_rect.Inset(kPageShadowLeft, kPageShadowTop,
2192 kPageShadowRight, kPageShadowBottom);
2194 pages_[i]->set_rect(page_rect);
2196 pages_.push_back(new PDFiumPage(this, i, page_rect, doc_complete));
2200 CalculateVisiblePages();
2201 if (document_size_ != old_document_size)
2202 client_->DocumentSizeUpdated(document_size_);
2205 void PDFiumEngine::CalculateVisiblePages() {
2206 // Clear pending requests queue, since it may contain requests to the pages
2207 // that are already invisible (after scrolling for example).
2208 pending_pages_.clear();
2209 doc_loader_.ClearPendingRequests();
2211 visible_pages_.clear();
2212 pp::Rect visible_rect(plugin_size_);
2213 for (size_t i = 0; i < pages_.size(); ++i) {
2214 // Check an entire PageScreenRect, since we might need to repaint side
2215 // borders and shadows even if the page itself is not visible.
2216 // For example, when user use pdf with different page sizes and zoomed in
2217 // outside page area.
2218 if (visible_rect.Intersects(GetPageScreenRect(i))) {
2219 visible_pages_.push_back(i);
2220 CheckPageAvailable(i, &pending_pages_);
2222 // Need to unload pages when we're not using them, since some PDFs use a
2223 // lot of memory. See http://crbug.com/48791
2224 if (defer_page_unload_) {
2225 deferred_page_unloads_.push_back(i);
2227 pages_[i]->Unload();
2230 // If the last mouse down was on a page that's no longer visible, reset
2231 // that variable so that we don't send keyboard events to it (the focus
2232 // will be lost when the page is first closed anyways).
2233 if (static_cast<int>(i) == last_page_mouse_down_)
2234 last_page_mouse_down_ = -1;
2238 // Any pending highlighting of form fields will be invalid since these are in
2239 // screen coordinates.
2240 form_highlights_.clear();
2242 if (visible_pages_.size() == 0)
2243 first_visible_page_ = -1;
2245 first_visible_page_ = visible_pages_.front();
2247 int most_visible_page = first_visible_page_;
2248 // Check if the next page is more visible than the first one.
2249 if (most_visible_page != -1 &&
2250 pages_.size() > 0 &&
2251 most_visible_page < static_cast<int>(pages_.size()) - 1) {
2253 visible_rect.Intersect(GetPageScreenRect(most_visible_page));
2255 visible_rect.Intersect(GetPageScreenRect(most_visible_page + 1));
2256 if (rc_next.height() > rc_first.height())
2257 most_visible_page++;
2260 SetCurrentPage(most_visible_page);
2263 bool PDFiumEngine::IsPageVisible(int index) const {
2264 for (size_t i = 0; i < visible_pages_.size(); ++i) {
2265 if (visible_pages_[i] == index)
2272 bool PDFiumEngine::CheckPageAvailable(int index, std::vector<int>* pending) {
2273 if (!doc_ || !form_)
2276 if (static_cast<int>(pages_.size()) > index && pages_[index]->available())
2279 if (!FPDFAvail_IsPageAvail(fpdf_availability_, index, &download_hints_)) {
2281 for (j = 0; j < pending->size(); ++j) {
2282 if ((*pending)[j] == index)
2286 if (j == pending->size())
2287 pending->push_back(index);
2291 if (static_cast<int>(pages_.size()) > index)
2292 pages_[index]->set_available(true);
2293 if (!default_page_size_.GetArea())
2294 default_page_size_ = GetPageSize(index);
2298 pp::Size PDFiumEngine::GetPageSize(int index) {
2300 double width_in_points = 0;
2301 double height_in_points = 0;
2302 int rv = FPDF_GetPageSizeByIndex(
2303 doc_, index, &width_in_points, &height_in_points);
2306 int width_in_pixels = static_cast<int>(
2307 width_in_points * kPixelsPerInch / kPointsPerInch);
2308 int height_in_pixels = static_cast<int>(
2309 height_in_points * kPixelsPerInch / kPointsPerInch);
2310 if (current_rotation_ % 2 == 1)
2311 std::swap(width_in_pixels, height_in_pixels);
2312 size = pp::Size(width_in_pixels, height_in_pixels);
2317 int PDFiumEngine::StartPaint(int page_index, const pp::Rect& dirty) {
2318 // For the first time we hit paint, do nothing and just record the paint for
2319 // the next callback. This keeps the UI responsive in case the user is doing
2320 // a lot of scrolling.
2321 ProgressivePaint progressive;
2322 progressive.rect = dirty;
2323 progressive.page_index = page_index;
2324 progressive.bitmap = NULL;
2325 progressive.painted_ = false;
2326 progressive_paints_.push_back(progressive);
2327 return progressive_paints_.size() - 1;
2330 bool PDFiumEngine::ContinuePaint(int progressive_index,
2331 pp::ImageData* image_data) {
2332 #if defined(OS_LINUX)
2333 g_last_instance_id = client_->GetPluginInstance()->pp_instance();
2337 int page_index = progressive_paints_[progressive_index].page_index;
2338 last_progressive_start_time_ = base::Time::Now();
2339 if (progressive_paints_[progressive_index].bitmap) {
2340 rv = FPDF_RenderPage_Continue(
2341 pages_[page_index]->GetPage(), static_cast<IFSDK_PAUSE*>(this));
2343 pp::Rect dirty = progressive_paints_[progressive_index].rect;
2344 progressive_paints_[progressive_index].bitmap = CreateBitmap(dirty,
2346 int start_x, start_y, size_x, size_y;
2348 page_index, dirty, &start_x, &start_y, &size_x, &size_y);
2349 FPDFBitmap_FillRect(
2350 progressive_paints_[progressive_index].bitmap, start_x, start_y, size_x,
2351 size_y, 255, 255, 255, 255);
2352 rv = FPDF_RenderPageBitmap_Start(
2353 progressive_paints_[progressive_index].bitmap,
2354 pages_[page_index]->GetPage(), start_x, start_y, size_x, size_y,
2356 GetRenderingFlags(), static_cast<IFSDK_PAUSE*>(this));
2358 return rv != FPDF_RENDER_TOBECOUNTINUED;
2361 void PDFiumEngine::FinishPaint(int progressive_index,
2362 pp::ImageData* image_data) {
2363 int page_index = progressive_paints_[progressive_index].page_index;
2364 pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
2365 FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;
2366 int start_x, start_y, size_x, size_y;
2368 page_index, dirty_in_screen, &start_x, &start_y, &size_x, &size_y);
2372 form_, bitmap, pages_[page_index]->GetPage(), start_x, start_y, size_x,
2373 size_y, current_rotation_, GetRenderingFlags());
2375 FillPageSides(progressive_index);
2377 // Paint the page shadows.
2378 PaintPageShadow(progressive_index, image_data);
2380 DrawSelections(progressive_index, image_data);
2382 FPDF_RenderPage_Close(pages_[page_index]->GetPage());
2383 FPDFBitmap_Destroy(bitmap);
2384 progressive_paints_.erase(progressive_paints_.begin() + progressive_index);
2386 client_->DocumentPaintOccurred();
2389 void PDFiumEngine::CancelPaints() {
2390 for (size_t i = 0; i < progressive_paints_.size(); ++i) {
2391 FPDF_RenderPage_Close(pages_[progressive_paints_[i].page_index]->GetPage());
2392 FPDFBitmap_Destroy(progressive_paints_[i].bitmap);
2394 progressive_paints_.clear();
2397 void PDFiumEngine::FillPageSides(int progressive_index) {
2398 int page_index = progressive_paints_[progressive_index].page_index;
2399 pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
2400 FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap;
2402 pp::Rect page_rect = pages_[page_index]->rect();
2403 if (page_rect.x() > 0) {
2405 page_rect.y() - kPageShadowTop,
2406 page_rect.x() - kPageShadowLeft,
2407 page_rect.height() + kPageShadowTop +
2408 kPageShadowBottom + kPageSeparatorThickness);
2409 left = GetScreenRect(left).Intersect(dirty_in_screen);
2411 FPDFBitmap_FillRect(
2412 bitmap, left.x() - dirty_in_screen.x(),
2413 left.y() - dirty_in_screen.y(), left.width(), left.height(),
2414 kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
2418 if (page_rect.right() < document_size_.width()) {
2419 pp::Rect right(page_rect.right() + kPageShadowRight,
2420 page_rect.y() - kPageShadowTop,
2421 document_size_.width() - page_rect.right() -
2423 page_rect.height() + kPageShadowTop +
2424 kPageShadowBottom + kPageSeparatorThickness);
2425 right = GetScreenRect(right).Intersect(dirty_in_screen);
2427 FPDFBitmap_FillRect(
2428 bitmap, right.x() - dirty_in_screen.x(),
2429 right.y() - dirty_in_screen.y(), right.width(), right.height(),
2430 kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
2435 pp::Rect bottom(page_rect.x() - kPageShadowLeft,
2436 page_rect.bottom() + kPageShadowBottom,
2437 page_rect.width() + kPageShadowLeft + kPageShadowRight,
2438 kPageSeparatorThickness);
2439 bottom = GetScreenRect(bottom).Intersect(dirty_in_screen);
2441 FPDFBitmap_FillRect(
2442 bitmap, bottom.x() - dirty_in_screen.x(),
2443 bottom.y() - dirty_in_screen.y(), bottom.width(), bottom.height(),
2444 kBackgroundColorR, kBackgroundColorG, kBackgroundColorB,
2448 void PDFiumEngine::PaintPageShadow(int progressive_index,
2449 pp::ImageData* image_data) {
2450 int page_index = progressive_paints_[progressive_index].page_index;
2451 pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
2452 pp::Rect page_rect = pages_[page_index]->rect();
2453 pp::Rect shadow_rect(page_rect);
2454 shadow_rect.Inset(-kPageShadowLeft, -kPageShadowTop,
2455 -kPageShadowRight, -kPageShadowBottom);
2457 // Due to the rounding errors of the GetScreenRect it is possible to get
2458 // different size shadows on the left and right sides even they are defined
2459 // the same. To fix this issue let's calculate shadow rect and then shrink
2460 // it by the size of the shadows.
2461 shadow_rect = GetScreenRect(shadow_rect);
2462 page_rect = shadow_rect;
2464 page_rect.Inset(static_cast<int>(ceil(kPageShadowLeft * current_zoom_)),
2465 static_cast<int>(ceil(kPageShadowTop * current_zoom_)),
2466 static_cast<int>(ceil(kPageShadowRight * current_zoom_)),
2467 static_cast<int>(ceil(kPageShadowBottom * current_zoom_)));
2469 DrawPageShadow(page_rect, shadow_rect, dirty_in_screen, image_data);
2472 void PDFiumEngine::DrawSelections(int progressive_index,
2473 pp::ImageData* image_data) {
2474 int page_index = progressive_paints_[progressive_index].page_index;
2475 pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect;
2477 void* region = NULL;
2479 GetRegion(dirty_in_screen.point(), image_data, ®ion, &stride);
2481 std::vector<pp::Rect> highlighted_rects;
2482 pp::Rect visible_rect = GetVisibleRect();
2483 for (size_t k = 0; k < selection_.size(); ++k) {
2484 if (selection_[k].page_index() != page_index)
2486 std::vector<pp::Rect> rects = selection_[k].GetScreenRects(
2487 visible_rect.point(), current_zoom_, current_rotation_);
2488 for (size_t j = 0; j < rects.size(); ++j) {
2489 pp::Rect visible_selection = rects[j].Intersect(dirty_in_screen);
2490 if (visible_selection.IsEmpty())
2493 visible_selection.Offset(
2494 -dirty_in_screen.point().x(), -dirty_in_screen.point().y());
2495 Highlight(region, stride, visible_selection, &highlighted_rects);
2499 for (size_t k = 0; k < form_highlights_.size(); ++k) {
2500 pp::Rect visible_selection = form_highlights_[k].Intersect(dirty_in_screen);
2501 if (visible_selection.IsEmpty())
2504 visible_selection.Offset(
2505 -dirty_in_screen.point().x(), -dirty_in_screen.point().y());
2506 Highlight(region, stride, visible_selection, &highlighted_rects);
2508 form_highlights_.clear();
2511 void PDFiumEngine::PaintUnavailablePage(int page_index,
2512 const pp::Rect& dirty,
2513 pp::ImageData* image_data) {
2514 int start_x, start_y, size_x, size_y;
2515 GetPDFiumRect(page_index, dirty, &start_x, &start_y, &size_x, &size_y);
2516 FPDF_BITMAP bitmap = CreateBitmap(dirty, image_data);
2517 FPDFBitmap_FillRect(bitmap, start_x, start_y, size_x, size_y,
2518 kPendingPageColorR, kPendingPageColorG, kPendingPageColorB,
2519 kPendingPageColorA);
2521 pp::Rect loading_text_in_screen(
2522 pages_[page_index]->rect().width() / 2,
2523 pages_[page_index]->rect().y() + kLoadingTextVerticalOffset, 0, 0);
2524 loading_text_in_screen = GetScreenRect(loading_text_in_screen);
2525 FPDFBitmap_Destroy(bitmap);
2528 int PDFiumEngine::GetProgressiveIndex(int page_index) const {
2529 for (size_t i = 0; i < progressive_paints_.size(); ++i) {
2530 if (progressive_paints_[i].page_index == page_index)
2536 FPDF_BITMAP PDFiumEngine::CreateBitmap(const pp::Rect& rect,
2537 pp::ImageData* image_data) const {
2540 GetRegion(rect.point(), image_data, ®ion, &stride);
2543 return FPDFBitmap_CreateEx(
2544 rect.width(), rect.height(), FPDFBitmap_BGRx, region, stride);
2547 void PDFiumEngine::GetPDFiumRect(
2548 int page_index, const pp::Rect& rect, int* start_x, int* start_y,
2549 int* size_x, int* size_y) const {
2550 pp::Rect page_rect = GetScreenRect(pages_[page_index]->rect());
2551 page_rect.Offset(-rect.x(), -rect.y());
2553 *start_x = page_rect.x();
2554 *start_y = page_rect.y();
2555 *size_x = page_rect.width();
2556 *size_y = page_rect.height();
2559 int PDFiumEngine::GetRenderingFlags() const {
2560 int flags = FPDF_LCD_TEXT | FPDF_NO_CATCH;
2561 if (render_grayscale_)
2562 flags |= FPDF_GRAYSCALE;
2563 if (client_->IsPrintPreview())
2564 flags |= FPDF_PRINTING;
2568 pp::Rect PDFiumEngine::GetVisibleRect() const {
2570 rv.set_x(static_cast<int>(position_.x() / current_zoom_));
2571 rv.set_y(static_cast<int>(position_.y() / current_zoom_));
2572 rv.set_width(static_cast<int>(ceil(plugin_size_.width() / current_zoom_)));
2573 rv.set_height(static_cast<int>(ceil(plugin_size_.height() / current_zoom_)));
2577 pp::Rect PDFiumEngine::GetPageScreenRect(int page_index) const {
2578 // Since we use this rect for creating the PDFium bitmap, also include other
2579 // areas around the page that we might need to update such as the page
2580 // separator and the sides if the page is narrower than the document.
2581 return GetScreenRect(pp::Rect(
2583 pages_[page_index]->rect().y() - kPageShadowTop,
2584 document_size_.width(),
2585 pages_[page_index]->rect().height() + kPageShadowTop +
2586 kPageShadowBottom + kPageSeparatorThickness));
2589 pp::Rect PDFiumEngine::GetScreenRect(const pp::Rect& rect) const {
2592 static_cast<int>(ceil(rect.right() * current_zoom_ - position_.x()));
2594 static_cast<int>(ceil(rect.bottom() * current_zoom_ - position_.y()));
2596 rv.set_x(static_cast<int>(rect.x() * current_zoom_ - position_.x()));
2597 rv.set_y(static_cast<int>(rect.y() * current_zoom_ - position_.y()));
2598 rv.set_width(right - rv.x());
2599 rv.set_height(bottom - rv.y());
2603 void PDFiumEngine::Highlight(void* buffer,
2605 const pp::Rect& rect,
2606 std::vector<pp::Rect>* highlighted_rects) {
2610 pp::Rect new_rect = rect;
2611 for (size_t i = 0; i < highlighted_rects->size(); ++i)
2612 new_rect = new_rect.Subtract((*highlighted_rects)[i]);
2614 highlighted_rects->push_back(new_rect);
2615 int l = new_rect.x();
2616 int t = new_rect.y();
2617 int w = new_rect.width();
2618 int h = new_rect.height();
2620 for (int y = t; y < t + h; ++y) {
2621 for (int x = l; x < l + w; ++x) {
2622 uint8* pixel = static_cast<uint8*>(buffer) + y * stride + x * 4;
2623 // This is our highlight color.
2624 pixel[0] = static_cast<uint8>(
2625 pixel[0] * (kHighlightColorB / 255.0));
2626 pixel[1] = static_cast<uint8>(
2627 pixel[1] * (kHighlightColorG / 255.0));
2628 pixel[2] = static_cast<uint8>(
2629 pixel[2] * (kHighlightColorR / 255.0));
2634 PDFiumEngine::SelectionChangeInvalidator::SelectionChangeInvalidator(
2635 PDFiumEngine* engine) : engine_(engine) {
2636 previous_origin_ = engine_->GetVisibleRect().point();
2637 GetVisibleSelectionsScreenRects(&old_selections_);
2640 PDFiumEngine::SelectionChangeInvalidator::~SelectionChangeInvalidator() {
2641 // Offset the old selections if the document scrolled since we recorded them.
2642 pp::Point offset = previous_origin_ - engine_->GetVisibleRect().point();
2643 for (size_t i = 0; i < old_selections_.size(); ++i)
2644 old_selections_[i].Offset(offset);
2646 std::vector<pp::Rect> new_selections;
2647 GetVisibleSelectionsScreenRects(&new_selections);
2648 for (size_t i = 0; i < new_selections.size(); ++i) {
2649 for (size_t j = 0; j < old_selections_.size(); ++j) {
2650 if (new_selections[i] == old_selections_[j]) {
2651 // Rectangle was selected before and after, so no need to invalidate it.
2652 // Mark the rectangles by setting them to empty.
2653 new_selections[i] = old_selections_[j] = pp::Rect();
2658 for (size_t i = 0; i < old_selections_.size(); ++i) {
2659 if (!old_selections_[i].IsEmpty())
2660 engine_->client_->Invalidate(old_selections_[i]);
2662 for (size_t i = 0; i < new_selections.size(); ++i) {
2663 if (!new_selections[i].IsEmpty())
2664 engine_->client_->Invalidate(new_selections[i]);
2666 engine_->OnSelectionChanged();
2670 PDFiumEngine::SelectionChangeInvalidator::GetVisibleSelectionsScreenRects(
2671 std::vector<pp::Rect>* rects) {
2672 pp::Rect visible_rect = engine_->GetVisibleRect();
2673 for (size_t i = 0; i < engine_->selection_.size(); ++i) {
2674 int page_index = engine_->selection_[i].page_index();
2675 if (!engine_->IsPageVisible(page_index))
2676 continue; // This selection is on a page that's not currently visible.
2678 std::vector<pp::Rect> selection_rects =
2679 engine_->selection_[i].GetScreenRects(
2680 visible_rect.point(),
2681 engine_->current_zoom_,
2682 engine_->current_rotation_);
2683 rects->insert(rects->end(), selection_rects.begin(), selection_rects.end());
2687 void PDFiumEngine::DeviceToPage(int page_index,
2692 *page_x = *page_y = 0;
2693 int temp_x = static_cast<int>((device_x + position_.x())/ current_zoom_ -
2694 pages_[page_index]->rect().x());
2695 int temp_y = static_cast<int>((device_y + position_.y())/ current_zoom_ -
2696 pages_[page_index]->rect().y());
2698 pages_[page_index]->GetPage(), 0, 0,
2699 pages_[page_index]->rect().width(), pages_[page_index]->rect().height(),
2700 current_rotation_, temp_x, temp_y, page_x, page_y);
2703 int PDFiumEngine::GetVisiblePageIndex(FPDF_PAGE page) {
2704 for (size_t i = 0; i < visible_pages_.size(); ++i) {
2705 if (pages_[visible_pages_[i]]->GetPage() == page)
2706 return visible_pages_[i];
2711 void PDFiumEngine::SetCurrentPage(int index) {
2712 if (index == most_visible_page_ || !form_)
2714 if (most_visible_page_ != -1 && called_do_document_action_) {
2715 FPDF_PAGE old_page = pages_[most_visible_page_]->GetPage();
2716 FORM_DoPageAAction(old_page, form_, FPDFPAGE_AACTION_CLOSE);
2718 most_visible_page_ = index;
2719 #if defined(OS_LINUX)
2720 g_last_instance_id = client_->GetPluginInstance()->pp_instance();
2722 if (most_visible_page_ != -1 && called_do_document_action_) {
2723 FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage();
2724 FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN);
2728 void PDFiumEngine::TransformPDFPageForPrinting(
2730 const PP_PrintSettings_Dev& print_settings) {
2731 // Get the source page width and height in points.
2732 const double src_page_width = FPDF_GetPageWidth(page);
2733 const double src_page_height = FPDF_GetPageHeight(page);
2735 const int src_page_rotation = FPDFPage_GetRotation(page);
2736 const bool fit_to_page = print_settings.print_scaling_option ==
2737 PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA;
2739 pp::Size page_size(print_settings.paper_size);
2740 pp::Rect content_rect(print_settings.printable_area);
2741 const bool rotated = (src_page_rotation % 2 == 1);
2742 SetPageSizeAndContentRect(rotated,
2743 src_page_width > src_page_height,
2747 // Compute the screen page width and height in points.
2748 const int actual_page_width =
2749 rotated ? page_size.height() : page_size.width();
2750 const int actual_page_height =
2751 rotated ? page_size.width() : page_size.height();
2753 const double scale_factor = CalculateScaleFactor(fit_to_page, content_rect,
2755 src_page_height, rotated);
2757 // Calculate positions for the clip box.
2758 ClipBox source_clip_box;
2759 CalculateClipBoxBoundary(page, scale_factor, rotated, &source_clip_box);
2761 // Calculate the translation offset values.
2762 double offset_x = 0;
2763 double offset_y = 0;
2765 CalculateScaledClipBoxOffset(content_rect, source_clip_box, &offset_x,
2768 CalculateNonScaledClipBoxOffset(content_rect, src_page_rotation,
2769 actual_page_width, actual_page_height,
2770 source_clip_box, &offset_x, &offset_y);
2773 // Reset the media box and crop box. When the page has crop box and media box,
2774 // the plugin will display the crop box contents and not the entire media box.
2775 // If the pages have different crop box values, the plugin will display a
2776 // document of multiple page sizes. To give better user experience, we
2777 // decided to have same crop box and media box values. Hence, the user will
2778 // see a list of uniform pages.
2779 FPDFPage_SetMediaBox(page, 0, 0, page_size.width(), page_size.height());
2780 FPDFPage_SetCropBox(page, 0, 0, page_size.width(), page_size.height());
2782 // Transformation is not required, return. Do this check only after updating
2783 // the media box and crop box. For more detailed information, please refer to
2784 // the comment block right before FPDF_SetMediaBox and FPDF_GetMediaBox calls.
2785 if (scale_factor == 1.0 && offset_x == 0 && offset_y == 0)
2789 // All the positions have been calculated, now manipulate the PDF.
2790 FS_MATRIX matrix = {static_cast<float>(scale_factor),
2793 static_cast<float>(scale_factor),
2794 static_cast<float>(offset_x),
2795 static_cast<float>(offset_y)};
2796 FS_RECTF cliprect = {static_cast<float>(source_clip_box.left+offset_x),
2797 static_cast<float>(source_clip_box.top+offset_y),
2798 static_cast<float>(source_clip_box.right+offset_x),
2799 static_cast<float>(source_clip_box.bottom+offset_y)};
2800 FPDFPage_TransFormWithClip(page, &matrix, &cliprect);
2801 FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor,
2802 offset_x, offset_y);
2805 void PDFiumEngine::DrawPageShadow(const pp::Rect& page_rc,
2806 const pp::Rect& shadow_rc,
2807 const pp::Rect& clip_rc,
2808 pp::ImageData* image_data) {
2809 pp::Rect page_rect(page_rc);
2810 page_rect.Offset(page_offset_);
2812 pp::Rect shadow_rect(shadow_rc);
2813 shadow_rect.Offset(page_offset_);
2815 pp::Rect clip_rect(clip_rc);
2816 clip_rect.Offset(page_offset_);
2818 // Page drop shadow parameters.
2819 const double factor = 0.5;
2820 const uint32 background = (kBackgroundColorA << 24) |
2821 (kBackgroundColorR << 16) |
2822 (kBackgroundColorG << 8) |
2824 uint32 depth = std::max(
2825 std::max(page_rect.x() - shadow_rect.x(),
2826 page_rect.y() - shadow_rect.y()),
2827 std::max(shadow_rect.right() - page_rect.right(),
2828 shadow_rect.bottom() - page_rect.bottom()));
2829 depth = static_cast<uint32>(depth * 1.5) + 1;
2831 // We need to check depth only to verify our copy of shadow matrix is correct.
2832 if (!page_shadow_.get() || page_shadow_->depth() != depth)
2833 page_shadow_.reset(new ShadowMatrix(depth, factor, background));
2835 DCHECK(!image_data->is_null());
2836 DrawShadow(image_data, shadow_rect, page_rect, clip_rect, *page_shadow_);
2839 void PDFiumEngine::GetRegion(const pp::Point& location,
2840 pp::ImageData* image_data,
2842 int* stride) const {
2843 if (image_data->is_null()) {
2844 DCHECK(plugin_size_.IsEmpty());
2849 char* buffer = static_cast<char*>(image_data->data());
2850 *stride = image_data->stride();
2852 pp::Point offset_location = location + page_offset_;
2853 // TODO: update this when we support BIDI and scrollbars can be on the left.
2855 !pp::Rect(page_offset_, plugin_size_).Contains(offset_location)) {
2860 buffer += location.y() * (*stride);
2861 buffer += (location.x() + page_offset_.x()) * 4;
2865 void PDFiumEngine::OnSelectionChanged() {
2866 if (HasPermission(PDFEngine::PERMISSION_COPY))
2867 pp::PDF::SetSelectedText(GetPluginInstance(), GetSelectedText().c_str());
2870 void PDFiumEngine::Form_Invalidate(FPDF_FORMFILLINFO* param,
2876 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2877 int page_index = engine->GetVisiblePageIndex(page);
2878 if (page_index == -1) {
2879 // This can sometime happen when the page is closed because it went off
2880 // screen, and PDFium invalidates the control as it's being deleted.
2884 pp::Rect rect = engine->pages_[page_index]->PageToScreen(
2885 engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,
2886 bottom, engine->current_rotation_);
2887 engine->client_->Invalidate(rect);
2890 void PDFiumEngine::Form_OutputSelectedRect(FPDF_FORMFILLINFO* param,
2896 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2897 int page_index = engine->GetVisiblePageIndex(page);
2898 if (page_index == -1) {
2902 pp::Rect rect = engine->pages_[page_index]->PageToScreen(
2903 engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right,
2904 bottom, engine->current_rotation_);
2905 engine->form_highlights_.push_back(rect);
2908 void PDFiumEngine::Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type) {
2909 // We don't need this since it's not enough to change the cursor in all
2910 // scenarios. Instead, we check which form field we're under in OnMouseMove.
2913 int PDFiumEngine::Form_SetTimer(FPDF_FORMFILLINFO* param,
2915 TimerCallback timer_func) {
2916 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2917 engine->timers_[++engine->next_timer_id_] =
2918 std::pair<int, TimerCallback>(elapse, timer_func);
2919 engine->client_->ScheduleCallback(engine->next_timer_id_, elapse);
2920 return engine->next_timer_id_;
2923 void PDFiumEngine::Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id) {
2924 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2925 engine->timers_.erase(timer_id);
2928 FPDF_SYSTEMTIME PDFiumEngine::Form_GetLocalTime(FPDF_FORMFILLINFO* param) {
2929 base::Time time = base::Time::Now();
2930 base::Time::Exploded exploded;
2931 time.LocalExplode(&exploded);
2934 rv.wYear = exploded.year;
2935 rv.wMonth = exploded.month;
2936 rv.wDayOfWeek = exploded.day_of_week;
2937 rv.wDay = exploded.day_of_month;
2938 rv.wHour = exploded.hour;
2939 rv.wMinute = exploded.minute;
2940 rv.wSecond = exploded.second;
2941 rv.wMilliseconds = exploded.millisecond;
2945 void PDFiumEngine::Form_OnChange(FPDF_FORMFILLINFO* param) {
2946 // Don't care about.
2949 FPDF_PAGE PDFiumEngine::Form_GetPage(FPDF_FORMFILLINFO* param,
2950 FPDF_DOCUMENT document,
2952 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2953 if (page_index < 0 || page_index >= static_cast<int>(engine->pages_.size()))
2955 return engine->pages_[page_index]->GetPage();
2958 FPDF_PAGE PDFiumEngine::Form_GetCurrentPage(FPDF_FORMFILLINFO* param,
2959 FPDF_DOCUMENT document) {
2960 // TODO(jam): find out what this is used for.
2961 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2962 int index = engine->last_page_mouse_down_;
2964 index = engine->GetMostVisiblePage();
2971 return engine->pages_[index]->GetPage();
2974 int PDFiumEngine::Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page) {
2978 void PDFiumEngine::Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param,
2979 FPDF_BYTESTRING named_action) {
2980 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
2981 std::string action(named_action);
2982 if (action == "Print") {
2983 engine->client_->Print();
2987 int index = engine->last_page_mouse_down_;
2988 /* Don't try to calculate the most visible page if we don't have a left click
2989 before this event (this code originally copied Form_GetCurrentPage which of
2990 course needs to do that and which doesn't have recursion). This can end up
2991 causing infinite recursion. See http://crbug.com/240413 for more
2992 information. Either way, it's not necessary for the spec'd list of named
2995 index = engine->GetMostVisiblePage();
3000 // This is the only list of named actions per the spec (see 12.6.4.11). Adobe
3001 // Reader supports more, like FitWidth, but since they're not part of the spec
3002 // and we haven't got bugs about them, no need to now.
3003 if (action == "NextPage") {
3004 engine->client_->ScrollToPage(index + 1);
3005 } else if (action == "PrevPage") {
3006 engine->client_->ScrollToPage(index - 1);
3007 } else if (action == "FirstPage") {
3008 engine->client_->ScrollToPage(0);
3009 } else if (action == "LastPage") {
3010 engine->client_->ScrollToPage(engine->pages_.size() - 1);
3014 void PDFiumEngine::Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param,
3015 FPDF_WIDESTRING value,
3016 FPDF_DWORD valueLen,
3017 FPDF_BOOL is_focus) {
3018 // Do nothing for now.
3019 // TODO(gene): use this signal to trigger OSK.
3022 void PDFiumEngine::Form_DoURIAction(FPDF_FORMFILLINFO* param,
3023 FPDF_BYTESTRING uri) {
3024 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3025 engine->client_->NavigateTo(std::string(uri), false);
3028 void PDFiumEngine::Form_DoGoToAction(FPDF_FORMFILLINFO* param,
3031 float* position_array,
3032 int size_of_array) {
3033 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3034 engine->client_->ScrollToPage(page_index);
3037 int PDFiumEngine::Form_Alert(IPDF_JSPLATFORM* param,
3038 FPDF_WIDESTRING message,
3039 FPDF_WIDESTRING title,
3042 // See fpdfformfill.h for these values.
3045 ALERT_TYPE_OK_CANCEL,
3047 ALERT_TYPE_YES_NO_CANCEL
3051 ALERT_RESULT_OK = 1,
3052 ALERT_RESULT_CANCEL,
3057 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3058 std::string message_str =
3059 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));
3060 if (type == ALERT_TYPE_OK) {
3061 engine->client_->Alert(message_str);
3062 return ALERT_RESULT_OK;
3065 bool rv = engine->client_->Confirm(message_str);
3066 if (type == ALERT_TYPE_OK_CANCEL)
3067 return rv ? ALERT_RESULT_OK : ALERT_RESULT_CANCEL;
3068 return rv ? ALERT_RESULT_YES : ALERT_RESULT_NO;
3071 void PDFiumEngine::Form_Beep(IPDF_JSPLATFORM* param, int type) {
3072 // Beeps are annoying, and not possible using javascript, so ignore for now.
3075 int PDFiumEngine::Form_Response(IPDF_JSPLATFORM* param,
3076 FPDF_WIDESTRING question,
3077 FPDF_WIDESTRING title,
3078 FPDF_WIDESTRING default_response,
3079 FPDF_WIDESTRING label,
3083 std::string question_str = base::UTF16ToUTF8(
3084 reinterpret_cast<const base::char16*>(question));
3085 std::string default_str = base::UTF16ToUTF8(
3086 reinterpret_cast<const base::char16*>(default_response));
3088 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3089 std::string rv = engine->client_->Prompt(question_str, default_str);
3090 base::string16 rv_16 = base::UTF8ToUTF16(rv);
3091 int rv_bytes = rv_16.size() * sizeof(base::char16);
3092 if (response && rv_bytes <= length)
3093 memcpy(response, rv_16.c_str(), rv_bytes);
3097 int PDFiumEngine::Form_GetFilePath(IPDF_JSPLATFORM* param,
3100 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3101 std::string rv = engine->client_->GetURL();
3102 if (file_path && rv.size() <= static_cast<size_t>(length))
3103 memcpy(file_path, rv.c_str(), rv.size());
3107 void PDFiumEngine::Form_Mail(IPDF_JSPLATFORM* param,
3112 FPDF_WIDESTRING subject,
3114 FPDF_WIDESTRING bcc,
3115 FPDF_WIDESTRING message) {
3116 DCHECK(length == 0); // Don't handle attachments; no way with mailto.
3117 std::string to_str =
3118 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(to));
3119 std::string cc_str =
3120 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(cc));
3121 std::string bcc_str =
3122 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(bcc));
3123 std::string subject_str =
3124 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(subject));
3125 std::string message_str =
3126 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message));
3128 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3129 engine->client_->Email(to_str, cc_str, bcc_str, subject_str, message_str);
3132 void PDFiumEngine::Form_Print(IPDF_JSPLATFORM* param,
3137 FPDF_BOOL shrink_to_fit,
3138 FPDF_BOOL print_as_image,
3140 FPDF_BOOL annotations) {
3141 // No way to pass the extra information to the print dialog using JavaScript.
3142 // Just opening it is fine for now.
3143 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3144 engine->client_->Print();
3147 void PDFiumEngine::Form_SubmitForm(IPDF_JSPLATFORM* param,
3150 FPDF_WIDESTRING url) {
3151 std::string url_str =
3152 base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(url));
3153 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3154 engine->client_->SubmitForm(url_str, form_data, length);
3157 void PDFiumEngine::Form_GotoPage(IPDF_JSPLATFORM* param,
3159 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3160 engine->client_->ScrollToPage(page_number);
3163 int PDFiumEngine::Form_Browse(IPDF_JSPLATFORM* param,
3166 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3167 std::string path = engine->client_->ShowFileSelectionDialog();
3168 if (path.size() + 1 <= static_cast<size_t>(length))
3169 memcpy(file_path, &path[0], path.size() + 1);
3170 return path.size() + 1;
3173 FPDF_BOOL PDFiumEngine::Pause_NeedToPauseNow(IFSDK_PAUSE* param) {
3174 PDFiumEngine* engine = static_cast<PDFiumEngine*>(param);
3175 return (base::Time::Now() - engine->last_progressive_start_time_).
3176 InMilliseconds() > engine->progressive_paint_timeout_;
3179 ScopedUnsupportedFeature::ScopedUnsupportedFeature(PDFiumEngine* engine)
3180 : engine_(engine), old_engine_(g_engine_for_unsupported) {
3181 g_engine_for_unsupported = engine_;
3184 ScopedUnsupportedFeature::~ScopedUnsupportedFeature() {
3185 g_engine_for_unsupported = old_engine_;
3188 PDFEngineExports* PDFEngineExports::Create() {
3189 return new PDFiumEngineExports;
3194 int CalculatePosition(FPDF_PAGE page,
3195 const PDFiumEngineExports::RenderingSettings& settings,
3197 int page_width = static_cast<int>(
3198 FPDF_GetPageWidth(page) * settings.dpi_x / kPointsPerInch);
3199 int page_height = static_cast<int>(
3200 FPDF_GetPageHeight(page) * settings.dpi_y / kPointsPerInch);
3202 // Start by assuming that we will draw exactly to the bounds rect
3204 *dest = settings.bounds;
3206 int rotate = 0; // normal orientation.
3208 // Auto-rotate landscape pages to print correctly.
3209 if (settings.autorotate &&
3210 (dest->width() > dest->height()) != (page_width > page_height)) {
3211 rotate = 1; // 90 degrees clockwise.
3212 std::swap(page_width, page_height);
3215 // See if we need to scale the output
3216 bool scale_to_bounds = false;
3217 if (settings.fit_to_bounds &&
3218 ((page_width > dest->width()) || (page_height > dest->height()))) {
3219 scale_to_bounds = true;
3220 } else if (settings.stretch_to_bounds &&
3221 ((page_width < dest->width()) || (page_height < dest->height()))) {
3222 scale_to_bounds = true;
3225 if (scale_to_bounds) {
3226 // If we need to maintain aspect ratio, calculate the actual width and
3228 if (settings.keep_aspect_ratio) {
3229 double scale_factor_x = page_width;
3230 scale_factor_x /= dest->width();
3231 double scale_factor_y = page_height;
3232 scale_factor_y /= dest->height();
3233 if (scale_factor_x > scale_factor_y) {
3234 dest->set_height(page_height / scale_factor_x);
3236 dest->set_width(page_width / scale_factor_y);
3240 // We are not scaling to bounds. Draw in the actual page size. If the
3241 // actual page size is larger than the bounds, the output will be
3243 dest->set_width(page_width);
3244 dest->set_height(page_height);
3247 if (settings.center_in_bounds) {
3248 pp::Point offset((settings.bounds.width() - dest->width()) / 2,
3249 (settings.bounds.height() - dest->height()) / 2);
3250 dest->Offset(offset);
3258 bool PDFiumEngineExports::RenderPDFPageToDC(const void* pdf_buffer,
3261 const RenderingSettings& settings,
3263 FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);
3266 FPDF_PAGE page = FPDF_LoadPage(doc, page_number);
3268 FPDF_CloseDocument(doc);
3271 RenderingSettings new_settings = settings;
3272 // calculate the page size
3273 if (new_settings.dpi_x == -1)
3274 new_settings.dpi_x = GetDeviceCaps(dc, LOGPIXELSX);
3275 if (new_settings.dpi_y == -1)
3276 new_settings.dpi_y = GetDeviceCaps(dc, LOGPIXELSY);
3279 int rotate = CalculatePosition(page, new_settings, &dest);
3281 int save_state = SaveDC(dc);
3282 // The caller wanted all drawing to happen within the bounds specified.
3283 // Based on scale calculations, our destination rect might be larger
3284 // than the bounds. Set the clip rect to the bounds.
3285 IntersectClipRect(dc, settings.bounds.x(), settings.bounds.y(),
3286 settings.bounds.x() + settings.bounds.width(),
3287 settings.bounds.y() + settings.bounds.height());
3289 // A temporary hack. PDFs generated by Cairo (used by Chrome OS to generate
3290 // a PDF output from a webpage) result in very large metafiles and the
3291 // rendering using FPDF_RenderPage is incorrect. In this case, render as a
3292 // bitmap. Note that this code does not kick in for PDFs printed from Chrome
3293 // because in that case we create a temp PDF first before printing and this
3294 // temp PDF does not have a creator string that starts with "cairo".
3295 base::string16 creator;
3296 size_t buffer_bytes = FPDF_GetMetaText(doc, "Creator", NULL, 0);
3297 if (buffer_bytes > 1) {
3298 FPDF_GetMetaText(doc, "Creator", WriteInto(&creator, buffer_bytes),
3301 bool use_bitmap = false;
3302 if (StartsWith(creator, L"cairo", false))
3305 // Another temporary hack. Some PDFs seems to render very slowly if
3306 // FPDF_RenderPage is directly used on a printer DC. I suspect it is
3307 // because of the code to talk Postscript directly to the printer if
3308 // the printer supports this. Need to discuss this with PDFium. For now,
3309 // render to a bitmap and then blit the bitmap to the DC if we have been
3310 // supplied a printer DC.
3311 int device_type = GetDeviceCaps(dc, TECHNOLOGY);
3313 (device_type == DT_RASPRINTER) || (device_type == DT_PLOTTER)) {
3314 FPDF_BITMAP bitmap = FPDFBitmap_Create(dest.width(), dest.height(),
3317 FPDFBitmap_FillRect(bitmap, 0, 0, dest.width(), dest.height(), 255, 255,
3319 FPDF_RenderPageBitmap(
3320 bitmap, page, 0, 0, dest.width(), dest.height(), rotate,
3321 FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
3322 int stride = FPDFBitmap_GetStride(bitmap);
3324 memset(&bmi, 0, sizeof(bmi));
3325 bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
3326 bmi.bmiHeader.biWidth = dest.width();
3327 bmi.bmiHeader.biHeight = -dest.height(); // top-down image
3328 bmi.bmiHeader.biPlanes = 1;
3329 bmi.bmiHeader.biBitCount = 32;
3330 bmi.bmiHeader.biCompression = BI_RGB;
3331 bmi.bmiHeader.biSizeImage = stride * dest.height();
3332 StretchDIBits(dc, dest.x(), dest.y(), dest.width(), dest.height(),
3333 0, 0, dest.width(), dest.height(),
3334 FPDFBitmap_GetBuffer(bitmap), &bmi, DIB_RGB_COLORS, SRCCOPY);
3335 FPDFBitmap_Destroy(bitmap);
3337 FPDF_RenderPage(dc, page, dest.x(), dest.y(), dest.width(), dest.height(),
3338 rotate, FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
3340 RestoreDC(dc, save_state);
3341 FPDF_ClosePage(page);
3342 FPDF_CloseDocument(doc);
3347 bool PDFiumEngineExports::RenderPDFPageToBitmap(
3348 const void* pdf_buffer,
3349 int pdf_buffer_size,
3351 const RenderingSettings& settings,
3352 void* bitmap_buffer) {
3353 FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL);
3356 FPDF_PAGE page = FPDF_LoadPage(doc, page_number);
3358 FPDF_CloseDocument(doc);
3363 int rotate = CalculatePosition(page, settings, &dest);
3365 FPDF_BITMAP bitmap =
3366 FPDFBitmap_CreateEx(settings.bounds.width(), settings.bounds.height(),
3367 FPDFBitmap_BGRA, bitmap_buffer,
3368 settings.bounds.width() * 4);
3370 FPDFBitmap_FillRect(bitmap, 0, 0, settings.bounds.width(),
3371 settings.bounds.height(), 255, 255, 255, 255);
3372 // Shift top-left corner of bounds to (0, 0) if it's not there.
3373 dest.set_point(dest.point() - settings.bounds.point());
3374 FPDF_RenderPageBitmap(
3375 bitmap, page, dest.x(), dest.y(), dest.width(), dest.height(), rotate,
3376 FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH);
3377 FPDFBitmap_Destroy(bitmap);
3378 FPDF_ClosePage(page);
3379 FPDF_CloseDocument(doc);
3383 bool PDFiumEngineExports::GetPDFDocInfo(const void* pdf_buffer,
3386 double* max_page_width) {
3387 FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL);
3390 int page_count_local = FPDF_GetPageCount(doc);
3392 *page_count = page_count_local;
3394 if (max_page_width) {
3395 *max_page_width = 0;
3396 for (int page_number = 0; page_number < page_count_local; page_number++) {
3397 double page_width = 0;
3398 double page_height = 0;
3399 FPDF_GetPageSizeByIndex(doc, page_number, &page_width, &page_height);
3400 if (page_width > *max_page_width) {
3401 *max_page_width = page_width;
3405 FPDF_CloseDocument(doc);
3409 } // namespace chrome_pdf