forked from chromium/chromium
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathinstance.cc
2833 lines (2488 loc) · 94 KB
/
instance.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "pdf/instance.h"
#include <algorithm> // for min()
#define _USE_MATH_DEFINES // for M_PI
#include <cmath> // for log() and pow()
#include <math.h>
#include <list>
#include "base/json/json_reader.h"
#include "base/json/json_writer.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/values.h"
#include "chrome/common/content_restriction.h"
#include "components/ui/zoom/page_zoom_constants.h"
#include "content/public/common/page_zoom.h"
#include "net/base/escape.h"
#include "pdf/draw_utils.h"
#include "pdf/number_image_generator.h"
#include "pdf/pdf.h"
#include "pdf/resource_consts.h"
#include "ppapi/c/dev/ppb_cursor_control_dev.h"
#include "ppapi/c/pp_errors.h"
#include "ppapi/c/pp_rect.h"
#include "ppapi/c/private/ppp_pdf.h"
#include "ppapi/c/trusted/ppb_url_loader_trusted.h"
#include "ppapi/cpp/core.h"
#include "ppapi/cpp/dev/font_dev.h"
#include "ppapi/cpp/dev/memory_dev.h"
#include "ppapi/cpp/dev/text_input_dev.h"
#include "ppapi/cpp/module.h"
#include "ppapi/cpp/point.h"
#include "ppapi/cpp/private/pdf.h"
#include "ppapi/cpp/rect.h"
#include "ppapi/cpp/resource.h"
#include "ppapi/cpp/url_request_info.h"
#include "ui/events/keycodes/keyboard_codes.h"
#if defined(OS_MACOSX)
#include "base/mac/mac_util.h"
#endif
namespace chrome_pdf {
struct ToolbarButtonInfo {
uint32 id;
Button::ButtonStyle style;
PP_ResourceImage normal;
PP_ResourceImage highlighted;
PP_ResourceImage pressed;
};
const uint32 kBackgroundColor = 0xFFCCCCCC;
namespace {
// Uncomment following #define to enable thumbnails.
// #define ENABLE_THUMBNAILS
const uint32 kToolbarSplashTimeoutMs = 6000;
const uint32 kMessageTextColor = 0xFF575757;
const uint32 kMessageTextSize = 22;
const uint32 kProgressFadeTimeoutMs = 250;
const uint32 kProgressDelayTimeoutMs = 1000;
const uint32 kAutoScrollTimeoutMs = 50;
const double kAutoScrollFactor = 0.2;
// Javascript methods.
const char kJSAccessibility[] = "accessibility";
const char kJSDocumentLoadComplete[] = "documentLoadComplete";
const char kJSGetHeight[] = "getHeight";
const char kJSGetHorizontalScrollbarThickness[] =
"getHorizontalScrollbarThickness";
const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
const char kJSGetSelectedText[] = "getSelectedText";
const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
const char kJSGetWidth[] = "getWidth";
const char kJSGetZoomLevel[] = "getZoomLevel";
const char kJSGoToPage[] = "goToPage";
const char kJSGrayscale[] = "grayscale";
const char kJSLoadPreviewPage[] = "loadPreviewPage";
const char kJSOnLoad[] = "onload";
const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
const char kJSOnScroll[] = "onScroll";
const char kJSPageXOffset[] = "pageXOffset";
const char kJSPageYOffset[] = "pageYOffset";
const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
const char kJSReload[] = "reload";
const char kJSRemovePrintButton[] = "removePrintButton";
const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
const char kJSSendKeyEvent[] = "sendKeyEvent";
const char kJSSetPageNumbers[] = "setPageNumbers";
const char kJSSetPageXOffset[] = "setPageXOffset";
const char kJSSetPageYOffset[] = "setPageYOffset";
const char kJSSetZoomLevel[] = "setZoomLevel";
const char kJSZoomFitToHeight[] = "fitToHeight";
const char kJSZoomFitToWidth[] = "fitToWidth";
const char kJSZoomIn[] = "zoomIn";
const char kJSZoomOut[] = "zoomOut";
// URL reference parameters.
// For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
// document from Adobe.
const char kDelimiters[] = "#&";
const char kNamedDest[] = "nameddest";
const char kPage[] = "page";
const char kChromePrint[] = "chrome://print/";
// Dictionary Value key names for the document accessibility info
const char kAccessibleNumberOfPages[] = "numberOfPages";
const char kAccessibleLoaded[] = "loaded";
const char kAccessibleCopyable[] = "copyable";
const ToolbarButtonInfo kPDFToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
{ kSaveButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
{ kPrintButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
};
const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
{ kSaveButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
{ kPrintButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
};
const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
{ kFitToPageButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
{ kFitToWidthButtonId, Button::BUTTON_STATE,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
{ kZoomOutButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
{ kZoomInButtonId, Button::BUTTON_CLICKABLE,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
};
static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
pp::Var var;
void* object =
pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object)
var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
return var.Detach();
}
void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
void* object =
pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
Instance* obj_instance = static_cast<Instance*>(object);
switch (type) {
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
obj_instance->RotateClockwise();
break;
case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
obj_instance->RotateCounterclockwise();
break;
}
}
}
PP_Bool GetPrintPresetOptionsFromDocument(
PP_Instance instance,
PP_PdfPrintPresetOptions_Dev* options) {
void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
if (object) {
Instance* obj_instance = static_cast<Instance*>(object);
obj_instance->GetPrintPresetOptionsFromDocument(options);
}
return PP_TRUE;
}
const PPP_Pdf ppp_private = {
&GetLinkAtPosition,
&Transform,
&GetPrintPresetOptionsFromDocument
};
int ExtractPrintPreviewPageIndex(const std::string& src_url) {
// Sample |src_url| format: chrome://print/id/page_index/print.pdf
std::vector<std::string> url_substr;
base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
if (url_substr.size() != 3)
return -1;
if (url_substr[2] != "print.pdf")
return -1;
int page_index = 0;
if (!base::StringToInt(url_substr[1], &page_index))
return -1;
return page_index;
}
bool IsPrintPreviewUrl(const std::string& url) {
return url.substr(0, strlen(kChromePrint)) == kChromePrint;
}
void ScalePoint(float scale, pp::Point* point) {
point->set_x(static_cast<int>(point->x() * scale));
point->set_y(static_cast<int>(point->y() * scale));
}
void ScaleRect(float scale, pp::Rect* rect) {
int left = static_cast<int>(floorf(rect->x() * scale));
int top = static_cast<int>(floorf(rect->y() * scale));
int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
rect->SetRect(left, top, right - left, bottom - top);
}
template<class T>
T ClipToRange(T value, T lower_boundary, T upper_boundary) {
DCHECK(lower_boundary <= upper_boundary);
return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
}
} // namespace
Instance::Instance(PP_Instance instance)
: pp::InstancePrivate(instance),
pp::Find_Private(this),
pp::Printing_Dev(this),
pp::Selection_Dev(this),
pp::WidgetClient_Dev(this),
pp::Zoom_Dev(this),
cursor_(PP_CURSORTYPE_POINTER),
timer_pending_(false),
current_timer_id_(0),
zoom_(1.0),
device_scale_(1.0),
printing_enabled_(true),
hidpi_enabled_(false),
full_(IsFullFrame()),
zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
did_call_start_loading_(false),
is_autoscroll_(false),
scrollbar_thickness_(-1),
scrollbar_reserved_thickness_(-1),
current_tb_info_(NULL),
current_tb_info_size_(0),
paint_manager_(this, this, true),
delayed_progress_timer_id_(0),
first_paint_(true),
painted_first_page_(false),
show_page_indicator_(false),
document_load_state_(LOAD_STATE_LOADING),
preview_document_load_state_(LOAD_STATE_COMPLETE),
told_browser_about_unsupported_feature_(false),
print_preview_page_count_(0) {
loader_factory_.Initialize(this);
timer_factory_.Initialize(this);
form_factory_.Initialize(this);
callback_factory_.Initialize(this);
engine_.reset(PDFEngine::Create(this));
pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
AddPerInstanceObject(kPPPPdfInterface, this);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
}
Instance::~Instance() {
if (timer_pending_) {
timer_factory_.CancelAll();
timer_pending_ = false;
}
// The engine may try to access this instance during its destruction.
// Make sure this happens early while the instance is still intact.
engine_.reset();
RemovePerInstanceObject(kPPPPdfInterface, this);
}
bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
// For now, we hide HiDPI support behind a flag.
if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
hidpi_enabled_ = true;
printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
if (printing_enabled_) {
CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
} else {
CreateToolbar(kPDFNoPrintToolbarButtons,
arraysize(kPDFNoPrintToolbarButtons));
}
CreateProgressBar();
// Load autoscroll anchor image.
autoscroll_anchor_ =
CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
#ifdef ENABLE_THUMBNAILS
CreateThumbnails();
#endif
const char* url = NULL;
for (uint32_t i = 0; i < argc; ++i) {
if (strcmp(argn[i], "src") == 0) {
url = argv[i];
break;
}
}
if (!url)
return false;
CreatePageIndicator(IsPrintPreviewUrl(url));
if (!full_) {
// For PDFs embedded in a frame, we don't get the data automatically like we
// do for full-frame loads. Start loading the data manually.
LoadUrl(url);
} else {
DCHECK(!did_call_start_loading_);
pp::PDF::DidStartLoading(this);
did_call_start_loading_ = true;
}
ZoomLimitsChanged(kMinZoom, kMaxZoom);
text_input_.reset(new pp::TextInput_Dev(this));
url_ = url;
return engine_->New(url);
}
bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
kProgressDelayTimeoutMs);
return engine_->HandleDocumentLoad(loader);
}
bool Instance::HandleInputEvent(const pp::InputEvent& event) {
// To simplify things, convert the event into device coordinates if it is
// a mouse event.
pp::InputEvent event_device_res(event);
{
pp::MouseInputEvent mouse_event(event);
if (!mouse_event.is_null()) {
pp::Point point = mouse_event.GetPosition();
pp::Point movement = mouse_event.GetMovement();
ScalePoint(device_scale_, &point);
ScalePoint(device_scale_, &movement);
mouse_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
movement);
event_device_res = mouse_event;
}
}
// Check if we need to go to autoscroll mode.
if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
pp::MouseInputEvent mouse_event(event_device_res);
pp::Point pos = mouse_event.GetPosition();
EnableAutoscroll(pos);
UpdateCursor(CalculateAutoscroll(pos));
return true;
} else {
// Quit autoscrolling on any other event.
DisableAutoscroll();
}
#ifdef ENABLE_THUMBNAILS
if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
thumbnails_.SlideOut();
if (thumbnails_.HandleEvent(event_device_res))
return true;
#endif
if (!IsMouseOnScrollbar(event_device_res) &&
toolbar_->HandleEvent(event_device_res))
return true;
#ifdef ENABLE_THUMBNAILS
if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
pp::MouseInputEvent mouse_event(event);
pp::Point pt = mouse_event.GetPosition();
pp::Rect v_scrollbar_rc;
v_scrollbar_->GetLocation(&v_scrollbar_rc);
// There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
// in the webkit that makes event.u.mouse.button
// equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
// To work around this issue we use modifier for now, and will switch
// to button once the bug is fixed and webkit got merged back to our tree.
if (v_scrollbar_rc.Contains(pt) &&
(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
thumbnails_.SlideIn();
}
// When scrollbar is in the scrolling mode we should display thumbnails
// even the mouse is outside the thumbnail and scrollbar areas.
// If mouse is outside plugin area, we are still getting mouse move events
// while scrolling. See bug description for details:
// http://code.google.com/p/chromium/issues/detail?id=56444
if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
!(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
!thumbnails_.rect().Contains(pt)) {
thumbnails_.SlideOut();
}
}
#endif
// Need to pass the event to the engine first, since if we're over an edit
// control we want it to get keyboard events (like space) instead of the
// scrollbar.
// TODO: will have to offset the mouse coordinates once we support bidi and
// there could be scrollbars on the left.
pp::InputEvent offset_event(event_device_res);
bool try_engine_first = true;
switch (offset_event.GetType()) {
case PP_INPUTEVENT_TYPE_MOUSEDOWN:
case PP_INPUTEVENT_TYPE_MOUSEUP:
case PP_INPUTEVENT_TYPE_MOUSEMOVE:
case PP_INPUTEVENT_TYPE_MOUSEENTER:
case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
pp::MouseInputEvent mouse_event(event_device_res);
pp::MouseInputEvent mouse_event_dip(event);
pp::Point point = mouse_event.GetPosition();
point.set_x(point.x() - available_area_.x());
offset_event = pp::MouseInputEvent(
this,
event.GetType(),
event.GetTimeStamp(),
event.GetModifiers(),
mouse_event.GetButton(),
point,
mouse_event.GetClickCount(),
mouse_event.GetMovement());
if (!engine_->IsSelecting()) {
if (!IsOverlayScrollbar() &&
!available_area_.Contains(mouse_event.GetPosition())) {
try_engine_first = false;
} else if (IsOverlayScrollbar() && IsMouseOnScrollbar(event)) {
try_engine_first = false;
}
}
break;
}
default:
break;
}
if (try_engine_first && engine_->HandleEvent(offset_event))
return true;
// Left/Right arrows should scroll to the beginning of the Prev/Next page if
// there is no horizontal scroll bar.
// If fit-to-height, PgDown/PgUp should scroll to the beginning of the
// Prev/Next page. Spacebar / shift+spacebar should do the same.
if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
pp::KeyboardInputEvent keyboard_event(event);
bool no_h_scrollbar = !h_scrollbar_.get();
uint32_t key_code = keyboard_event.GetKeyCode();
bool has_modifiers = keyboard_event.GetModifiers() != 0;
bool page_down =
no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_RIGHT;
bool page_up =
no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_LEFT;
if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
bool has_shift =
keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
bool key_is_space = key_code == ui::VKEY_SPACE;
page_down |= key_is_space || key_code == ui::VKEY_NEXT;
page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
}
if (page_down) {
int page = engine_->GetFirstVisiblePage();
if (page == -1)
return true;
// Engine calculates visible page including delimiter to the page size.
// We need to check here if the page itself is completely out of view and
// scroll to the next one in that case.
if (engine_->GetPageRect(page).bottom() * zoom_ <=
v_scrollbar_->GetValue())
page++;
ScrollToPage(page + 1);
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
} else if (page_up) {
int page = engine_->GetFirstVisiblePage();
if (page == -1)
return true;
if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
page--;
ScrollToPage(page);
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
}
if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
UpdateCursor(PP_CURSORTYPE_POINTER);
return true;
}
if (timer_pending_ &&
(event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
timer_factory_.CancelAll();
timer_pending_ = false;
} else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
engine_->IsSelecting()) {
bool set_timer = false;
pp::MouseInputEvent mouse_event(event);
if (v_scrollbar_.get() &&
(mouse_event.GetPosition().y() <= 0 ||
mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
v_scrollbar_->ScrollBy(
PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
set_timer = true;
}
if (h_scrollbar_.get() &&
(mouse_event.GetPosition().x() <= 0 ||
mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
mouse_event.GetPosition().x() >= 0 ? 1: -1);
set_timer = true;
}
if (set_timer) {
last_mouse_event_ = pp::MouseInputEvent(event);
pp::CompletionCallback callback =
timer_factory_.NewCallback(&Instance::OnTimerFired);
pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
timer_pending_ = true;
}
}
if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
pp::KeyboardInputEvent keyboard_event(event);
const uint32 modifier = event.GetModifiers();
if (modifier & kDefaultKeyModifier) {
switch (keyboard_event.GetKeyCode()) {
case 'A':
engine_->SelectAll();
return true;
}
}
if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
switch (keyboard_event.GetKeyCode()) {
case ui::VKEY_OEM_4:
// Left bracket.
engine_->RotateCounterclockwise();
return true;
case ui::VKEY_OEM_6:
// Right bracket.
engine_->RotateClockwise();
return true;
}
}
}
// Return true for unhandled clicks so the plugin takes focus.
return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
}
void Instance::DidChangeView(const pp::View& view) {
pp::Rect view_rect(view.GetRect());
float device_scale = 1.0f;
float old_device_scale = device_scale_;
if (hidpi_enabled_)
device_scale = view.GetDeviceScale();
pp::Size view_device_size(view_rect.width() * device_scale,
view_rect.height() * device_scale);
if (view_device_size == plugin_size_ && device_scale == device_scale_)
return; // We don't care about the position, only the size.
image_data_ = pp::ImageData();
device_scale_ = device_scale;
plugin_dip_size_ = view_rect.size();
plugin_size_ = view_device_size;
paint_manager_.SetSize(view_device_size, device_scale_);
image_data_ = pp::ImageData(this,
PP_IMAGEDATAFORMAT_BGRA_PREMUL,
plugin_size_,
false);
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
// View dimensions changed, disable autoscroll (if it was enabled).
DisableAutoscroll();
OnGeometryChanged(zoom_, old_device_scale);
}
pp::Var Instance::GetInstanceObject() {
if (instance_object_.is_undefined()) {
PDFScriptableObject* object = new PDFScriptableObject(this);
// The pp::Var takes ownership of object here.
instance_object_ = pp::VarPrivate(this, object);
}
return instance_object_;
}
void Instance::GetPrintPresetOptionsFromDocument(
PP_PdfPrintPresetOptions_Dev* options) {
options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
options->duplex =
static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
options->copies = engine_->GetCopiesToPrint();
pp::Size uniform_page_size;
options->is_page_size_uniform =
PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
options->uniform_page_size = PP_Size(uniform_page_size);
}
pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
pp::Point offset_point(point);
ScalePoint(device_scale_, &offset_point);
offset_point.set_x(offset_point.x() - available_area_.x());
return engine_->GetLinkAtPosition(offset_point);
}
pp::Var Instance::GetSelectedText(bool html) {
if (html)
return pp::Var();
return engine_->GetSelectedText();
}
void Instance::InvalidateWidget(pp::Widget_Dev widget,
const pp::Rect& dirty_rect) {
if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
if (!image_data_.is_null())
v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
} else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
if (!image_data_.is_null())
h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
} else {
// Possible to hit this condition since sometimes the scrollbar codes posts
// a task to do something later, and we could have deleted our reference in
// the meantime.
return;
}
pp::Rect dirty_rect_scaled = dirty_rect;
ScaleRect(device_scale_, &dirty_rect_scaled);
paint_manager_.InvalidateRect(dirty_rect_scaled);
}
void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
uint32_t value) {
value = GetScaled(value);
if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
engine_->ScrolledToYPosition(value);
pp::Rect rc;
v_scrollbar_->GetLocation(&rc);
int32 doc_height = GetDocumentPixelHeight();
doc_height -= GetScaled(rc.height());
#ifdef ENABLE_THUMBNAILS
if (thumbnails_.visible()) {
thumbnails_.SetPosition(value, doc_height, true);
}
#endif
pp::Point origin(
plugin_size_.width() - page_indicator_.rect().width() -
GetScaled(GetScrollbarReservedThickness()),
page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
page_indicator_.MoveTo(origin, page_indicator_.visible());
} else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
engine_->ScrolledToXPosition(value);
}
}
void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
bool overlay) {
scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
OnGeometryChanged(zoom_, device_scale_);
}
uint32_t Instance::QuerySupportedPrintOutputFormats() {
return engine_->QuerySupportedPrintOutputFormats();
}
int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
// For us num_pages is always equal to the number of pages in the PDF
// document irrespective of the printable area.
int32_t ret = engine_->GetNumberOfPages();
if (!ret)
return 0;
uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
if ((print_settings.format & supported_formats) == 0)
return 0;
print_settings_.is_printing = true;
print_settings_.pepper_print_settings = print_settings;
engine_->PrintBegin();
return ret;
}
pp::Resource Instance::PrintPages(
const PP_PrintPageNumberRange_Dev* page_ranges,
uint32_t page_range_count) {
if (!print_settings_.is_printing)
return pp::Resource();
print_settings_.print_pages_called_ = true;
return engine_->PrintPages(page_ranges, page_range_count,
print_settings_.pepper_print_settings);
}
void Instance::PrintEnd() {
if (print_settings_.print_pages_called_)
UserMetricsRecordAction("PDF.PrintPage");
print_settings_.Clear();
engine_->PrintEnd();
}
bool Instance::IsPrintScalingDisabled() {
return !engine_->GetPrintScaling();
}
bool Instance::StartFind(const std::string& text, bool case_sensitive) {
engine_->StartFind(text.c_str(), case_sensitive);
return true;
}
void Instance::SelectFindResult(bool forward) {
engine_->SelectFindResult(forward);
}
void Instance::StopFind() {
engine_->StopFind();
}
void Instance::Zoom(double scale, bool text_only) {
UserMetricsRecordAction("PDF.ZoomFromBrowser");
// If the zoom level doesn't change it means that this zoom change might have
// been initiated by the plugin. In that case, we don't want to change the
// zoom mode to ZOOM_SCALE as it may have been intentionally set to
// ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
if (scale == zoom_)
return;
SetZoom(ZOOM_SCALE, scale);
}
void Instance::ZoomChanged(double factor) {
if (full_)
Zoom_Dev::ZoomChanged(factor);
}
void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
std::vector<PaintManager::ReadyRect>* ready,
std::vector<pp::Rect>* pending) {
if (image_data_.is_null()) {
DCHECK(plugin_size_.IsEmpty());
return;
}
if (first_paint_) {
first_paint_ = false;
pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
FillRect(rect, kBackgroundColor);
ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
*pending = paint_rects;
return;
}
engine_->PrePaint();
for (size_t i = 0; i < paint_rects.size(); i++) {
// Intersect with plugin area since there could be pending invalidates from
// when the plugin area was larger.
pp::Rect rect =
paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
if (rect.IsEmpty())
continue;
pp::Rect pdf_rect = available_area_.Intersect(rect);
if (!pdf_rect.IsEmpty()) {
pdf_rect.Offset(available_area_.x() * -1, 0);
std::vector<pp::Rect> pdf_ready;
std::vector<pp::Rect> pdf_pending;
engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
for (size_t j = 0; j < pdf_ready.size(); ++j) {
pdf_ready[j].Offset(available_area_.point());
ready->push_back(
PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
}
for (size_t j = 0; j < pdf_pending.size(); ++j) {
pdf_pending[j].Offset(available_area_.point());
pending->push_back(pdf_pending[j]);
}
}
for (size_t j = 0; j < background_parts_.size(); ++j) {
pp::Rect intersection = background_parts_[j].location.Intersect(rect);
if (!intersection.IsEmpty()) {
FillRect(intersection, background_parts_[j].color);
ready->push_back(
PaintManager::ReadyRect(intersection, image_data_, false));
}
}
if (document_load_state_ == LOAD_STATE_FAILED) {
pp::Point top_center;
top_center.set_x(plugin_size_.width() / 2);
top_center.set_y(plugin_size_.height() / 2);
DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
}
#ifdef ENABLE_THUMBNAILS
thumbnails_.Paint(&image_data_, rect);
#endif
}
engine_->PostPaint();
// Must paint scrollbars after the background parts, in case we have an
// overlay scrollbar that's over the background. We also do this in a separate
// loop because the scrollbar painting logic uses the signal of whether there
// are pending paints or not to figure out if it should draw right away or
// not.
for (size_t i = 0; i < paint_rects.size(); i++) {
PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
}
if (progress_bar_.visible())
PaintOverlayControl(&progress_bar_, &image_data_, ready);
if (page_indicator_.visible())
PaintOverlayControl(&page_indicator_, &image_data_, ready);
if (toolbar_->current_transparency() != kTransparentAlpha)
PaintOverlayControl(toolbar_.get(), &image_data_, ready);
// Paint autoscroll anchor if needed.
if (is_autoscroll_) {
size_t limit = ready->size();
for (size_t i = 0; i < limit; i++) {
pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
if (!anchor_rect.IsEmpty()) {
pp::Rect draw_rc = pp::Rect(
pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
anchor_rect.y() - autoscroll_rect_.y()),
anchor_rect.size());
// Paint autoscroll anchor.
AlphaBlend(autoscroll_anchor_, draw_rc,
&image_data_, anchor_rect.point(), kOpaqueAlpha);
}
}
}
}
void Instance::PaintOverlayControl(
Control* ctrl,
pp::ImageData* image_data,
std::vector<PaintManager::ReadyRect>* ready) {
// Make sure that we only paint overlay controls over an area that's ready,
// i.e. not pending. Otherwise we'll mark the control rect as ready and
// it'll overwrite the pdf region.
std::list<pp::Rect> ctrl_rects;
for (size_t i = 0; i < ready->size(); i++) {
pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
if (!rc.IsEmpty())
ctrl_rects.push_back(rc);
}
if (!ctrl_rects.empty()) {
ctrl->PaintMultipleRects(image_data, ctrl_rects);
std::list<pp::Rect>::iterator iter;
for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
}
}
}
void Instance::DidOpen(int32_t result) {
if (result == PP_OK) {
engine_->HandleDocumentLoad(embed_loader_);
} else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
NOTREACHED();
}
}
void Instance::DidOpenPreview(int32_t result) {
if (result == PP_OK) {
preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
preview_engine_->HandleDocumentLoad(embed_preview_loader_);
} else {
NOTREACHED();
}
}
void Instance::PaintIfWidgetIntersects(
pp::Widget_Dev* widget,
const pp::Rect& rect,
std::vector<PaintManager::ReadyRect>* ready,
std::vector<pp::Rect>* pending) {
if (!widget)
return;
pp::Rect location;
if (!widget->GetLocation(&location))
return;
ScaleRect(device_scale_, &location);
location = location.Intersect(rect);
if (location.IsEmpty())
return;
if (IsOverlayScrollbar()) {
// If we're using overlay scrollbars, and there are pending paints under the
// scrollbar, don't update the scrollbar instantly. While it would be nice,
// we would need to double buffer the plugin area in order to make this
// work. This is because we'd need to always have a copy of what the pdf
// under the scrollbar looks like, and additionally we couldn't paint the
// pdf under the scrollbar if it's ready until we got the preceding flush.
// So in practice, it would make painting slower and introduce extra buffer
// copies for the general case.
for (size_t i = 0; i < pending->size(); ++i) {
if ((*pending)[i].Intersects(location))
return;
}
// Even if none of the pending paints are under the scrollbar, we never want
// to paint it if it's over the pdf if there are other pending paints.