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Blink roll 25b6bd3a7a131ffe68d809546ad1a20707915cdc:3a503f41ae42e5b79cfcd2ff10e65afde...
[chromium-blink-merge.git] / pdf / instance.cc
bloba0feb5666545129bce5aa599f1721bd5abe4be36
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.
4
5 #include "pdf/instance.h"
6
7 #include <algorithm> // for min()
8 #define _USE_MATH_DEFINES // for M_PI
9 #include <cmath> // for log() and pow()
10 #include <math.h>
11 #include <list>
12
13 #include "base/json/json_reader.h"
14 #include "base/json/json_writer.h"
15 #include "base/logging.h"
16 #include "base/strings/string_number_conversions.h"
17 #include "base/strings/string_split.h"
18 #include "base/strings/string_util.h"
19 #include "base/values.h"
20 #include "chrome/browser/chrome_page_zoom_constants.h"
21 #include "chrome/common/content_restriction.h"
22 #include "content/public/common/page_zoom.h"
23 #include "net/base/escape.h"
24 #include "pdf/draw_utils.h"
25 #include "pdf/number_image_generator.h"
26 #include "pdf/pdf.h"
27 #include "pdf/resource_consts.h"
28 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
29 #include "ppapi/c/pp_errors.h"
30 #include "ppapi/c/pp_rect.h"
31 #include "ppapi/c/private/ppp_pdf.h"
32 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
33 #include "ppapi/cpp/core.h"
34 #include "ppapi/cpp/dev/font_dev.h"
35 #include "ppapi/cpp/dev/memory_dev.h"
36 #include "ppapi/cpp/dev/text_input_dev.h"
37 #include "ppapi/cpp/module.h"
38 #include "ppapi/cpp/point.h"
39 #include "ppapi/cpp/private/pdf.h"
40 #include "ppapi/cpp/rect.h"
41 #include "ppapi/cpp/resource.h"
42 #include "ppapi/cpp/url_request_info.h"
43 #include "ui/events/keycodes/keyboard_codes.h"
44 #include "v8/include/v8.h"
45
46 #if defined(OS_MACOSX)
47 #include "base/mac/mac_util.h"
48 #endif
49
50 namespace chrome_pdf {
51
52 struct ToolbarButtonInfo {
53 uint32 id;
54 Button::ButtonStyle style;
55 PP_ResourceImage normal;
56 PP_ResourceImage highlighted;
57 PP_ResourceImage pressed;
58 };
59
60 namespace {
61
62 // Uncomment following #define to enable thumbnails.
63 // #define ENABLE_THUMBNAILS
64
65 const uint32 kToolbarSplashTimeoutMs = 6000;
66 const uint32 kMessageTextColor = 0xFF575757;
67 const uint32 kMessageTextSize = 22;
68 const uint32 kProgressFadeTimeoutMs = 250;
69 const uint32 kProgressDelayTimeoutMs = 1000;
70 const uint32 kAutoScrollTimeoutMs = 50;
71 const double kAutoScrollFactor = 0.2;
72
73 // Javascript methods.
74 const char kJSAccessibility[] = "accessibility";
75 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
76 const char kJSGetHeight[] = "getHeight";
77 const char kJSGetHorizontalScrollbarThickness[] =
78 "getHorizontalScrollbarThickness";
79 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
80 const char kJSGetSelectedText[] = "getSelectedText";
81 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
82 const char kJSGetWidth[] = "getWidth";
83 const char kJSGetZoomLevel[] = "getZoomLevel";
84 const char kJSGoToPage[] = "goToPage";
85 const char kJSGrayscale[] = "grayscale";
86 const char kJSLoadPreviewPage[] = "loadPreviewPage";
87 const char kJSOnLoad[] = "onload";
88 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
89 const char kJSOnScroll[] = "onScroll";
90 const char kJSPageXOffset[] = "pageXOffset";
91 const char kJSPageYOffset[] = "pageYOffset";
92 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
93 const char kJSReload[] = "reload";
94 const char kJSRemovePrintButton[] = "removePrintButton";
95 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
96 const char kJSSendKeyEvent[] = "sendKeyEvent";
97 const char kJSSetPageNumbers[] = "setPageNumbers";
98 const char kJSSetPageXOffset[] = "setPageXOffset";
99 const char kJSSetPageYOffset[] = "setPageYOffset";
100 const char kJSSetZoomLevel[] = "setZoomLevel";
101 const char kJSZoomFitToHeight[] = "fitToHeight";
102 const char kJSZoomFitToWidth[] = "fitToWidth";
103 const char kJSZoomIn[] = "zoomIn";
104 const char kJSZoomOut[] = "zoomOut";
105
106 // URL reference parameters.
107 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
108 // document from Adobe.
109 const char kDelimiters[] = "#&";
110 const char kNamedDest[] = "nameddest";
111 const char kPage[] = "page";
112
113 const char kChromePrint[] = "chrome://print/";
114
115 // Dictionary Value key names for the document accessibility info
116 const char kAccessibleNumberOfPages[] = "numberOfPages";
117 const char kAccessibleLoaded[] = "loaded";
118 const char kAccessibleCopyable[] = "copyable";
119
120 const ToolbarButtonInfo kPDFToolbarButtons[] = {
121 { kFitToPageButtonId, Button::BUTTON_STATE,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
124 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
125 { kFitToWidthButtonId, Button::BUTTON_STATE,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
128 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
129 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
132 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
133 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
136 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
137 { kSaveButtonId, Button::BUTTON_CLICKABLE,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
140 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
141 { kPrintButtonId, Button::BUTTON_CLICKABLE,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
144 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
145 };
146
147 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
148 { kFitToPageButtonId, Button::BUTTON_STATE,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
151 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
152 { kFitToWidthButtonId, Button::BUTTON_STATE,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
155 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
156 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
159 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
160 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
163 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
164 { kSaveButtonId, Button::BUTTON_CLICKABLE,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
167 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
168 { kPrintButtonId, Button::BUTTON_CLICKABLE,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
171 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
172 };
173
174 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
175 { kFitToPageButtonId, Button::BUTTON_STATE,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
178 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
179 { kFitToWidthButtonId, Button::BUTTON_STATE,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
182 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
183 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
186 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
187 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
190 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
191 };
192
193 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
194
195 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
196 pp::Var var;
197 void* object =
198 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
199 if (object)
200 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
201 return var.Detach();
202 }
203
204 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
205 void* object =
206 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
207 if (object) {
208 Instance* obj_instance = static_cast<Instance*>(object);
209 switch (type) {
210 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
211 obj_instance->RotateClockwise();
212 break;
213 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
214 obj_instance->RotateCounterclockwise();
215 break;
216 }
217 }
218 }
219
220 PP_Bool GetPrintPresetOptionsFromDocument(
221 PP_Instance instance,
222 PP_PdfPrintPresetOptions_Dev* options) {
223 void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
224 if (object) {
225 Instance* obj_instance = static_cast<Instance*>(object);
226 obj_instance->GetPrintPresetOptionsFromDocument(options);
227 }
228 return PP_TRUE;
229 }
230
231 const PPP_Pdf ppp_private = {
232 &GetLinkAtPosition,
233 &Transform,
234 &GetPrintPresetOptionsFromDocument
235 };
236
237 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
238 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
239 std::vector<std::string> url_substr;
240 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
241 if (url_substr.size() != 3)
242 return -1;
243
244 if (url_substr[2] != "print.pdf")
245 return -1;
246
247 int page_index = 0;
248 if (!base::StringToInt(url_substr[1], &page_index))
249 return -1;
250 return page_index;
251 }
252
253 bool IsPrintPreviewUrl(const std::string& url) {
254 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
255 }
256
257 void ScalePoint(float scale, pp::Point* point) {
258 point->set_x(static_cast<int>(point->x() * scale));
259 point->set_y(static_cast<int>(point->y() * scale));
260 }
261
262 void ScaleRect(float scale, pp::Rect* rect) {
263 int left = static_cast<int>(floorf(rect->x() * scale));
264 int top = static_cast<int>(floorf(rect->y() * scale));
265 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
266 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
267 rect->SetRect(left, top, right - left, bottom - top);
268 }
269
270 template<class T>
271 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
272 DCHECK(lower_boundary <= upper_boundary);
273 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
274 }
275
276 } // namespace
277
278 Instance::Instance(PP_Instance instance)
279 : pp::InstancePrivate(instance),
280 pp::Find_Private(this),
281 pp::Printing_Dev(this),
282 pp::Selection_Dev(this),
283 pp::WidgetClient_Dev(this),
284 pp::Zoom_Dev(this),
285 cursor_(PP_CURSORTYPE_POINTER),
286 timer_pending_(false),
287 current_timer_id_(0),
288 zoom_(1.0),
289 device_scale_(1.0),
290 printing_enabled_(true),
291 hidpi_enabled_(false),
292 full_(IsFullFrame()),
293 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
294 did_call_start_loading_(false),
295 is_autoscroll_(false),
296 scrollbar_thickness_(-1),
297 scrollbar_reserved_thickness_(-1),
298 current_tb_info_(NULL),
299 current_tb_info_size_(0),
300 paint_manager_(this, this, true),
301 delayed_progress_timer_id_(0),
302 first_paint_(true),
303 painted_first_page_(false),
304 show_page_indicator_(false),
305 document_load_state_(LOAD_STATE_LOADING),
306 preview_document_load_state_(LOAD_STATE_COMPLETE),
307 told_browser_about_unsupported_feature_(false),
308 print_preview_page_count_(0) {
309 loader_factory_.Initialize(this);
310 timer_factory_.Initialize(this);
311 form_factory_.Initialize(this);
312 callback_factory_.Initialize(this);
313 engine_.reset(PDFEngine::Create(this));
314 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
315 AddPerInstanceObject(kPPPPdfInterface, this);
316
317 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
318 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
319 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
320 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
321 }
322
323 Instance::~Instance() {
324 if (timer_pending_) {
325 timer_factory_.CancelAll();
326 timer_pending_ = false;
327 }
328 // The engine may try to access this instance during its destruction.
329 // Make sure this happens early while the instance is still intact.
330 engine_.reset();
331 RemovePerInstanceObject(kPPPPdfInterface, this);
332 }
333
334 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
335 v8::StartupData natives;
336 v8::StartupData snapshot;
337 pp::PDF::GetV8ExternalSnapshotData(this, &natives.data, &natives.raw_size,
338 &snapshot.data, &snapshot.raw_size);
339 if (natives.data) {
340 natives.compressed_size = natives.raw_size;
341 snapshot.compressed_size = snapshot.raw_size;
342 v8::V8::SetNativesDataBlob(&natives);
343 v8::V8::SetSnapshotDataBlob(&snapshot);
344 }
345
346 // For now, we hide HiDPI support behind a flag.
347 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
348 hidpi_enabled_ = true;
349
350 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
351 if (printing_enabled_) {
352 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
353 } else {
354 CreateToolbar(kPDFNoPrintToolbarButtons,
355 arraysize(kPDFNoPrintToolbarButtons));
356 }
357
358 CreateProgressBar();
359
360 // Load autoscroll anchor image.
361 autoscroll_anchor_ =
362 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
363
364 #ifdef ENABLE_THUMBNAILS
365 CreateThumbnails();
366 #endif
367 const char* url = NULL;
368 for (uint32_t i = 0; i < argc; ++i) {
369 if (strcmp(argn[i], "src") == 0) {
370 url = argv[i];
371 break;
372 }
373 }
374
375 if (!url)
376 return false;
377
378 CreatePageIndicator(IsPrintPreviewUrl(url));
379
380 if (!full_) {
381 // For PDFs embedded in a frame, we don't get the data automatically like we
382 // do for full-frame loads. Start loading the data manually.
383 LoadUrl(url);
384 } else {
385 DCHECK(!did_call_start_loading_);
386 pp::PDF::DidStartLoading(this);
387 did_call_start_loading_ = true;
388 }
389
390 ZoomLimitsChanged(kMinZoom, kMaxZoom);
391
392 text_input_.reset(new pp::TextInput_Dev(this));
393
394 url_ = url;
395 return engine_->New(url);
396 }
397
398 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
399 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
400 kProgressDelayTimeoutMs);
401 return engine_->HandleDocumentLoad(loader);
402 }
403
404 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
405 // To simplify things, convert the event into device coordinates if it is
406 // a mouse event.
407 pp::InputEvent event_device_res(event);
408 {
409 pp::MouseInputEvent mouse_event(event);
410 if (!mouse_event.is_null()) {
411 pp::Point point = mouse_event.GetPosition();
412 pp::Point movement = mouse_event.GetMovement();
413 ScalePoint(device_scale_, &point);
414 ScalePoint(device_scale_, &movement);
415 mouse_event = pp::MouseInputEvent(
416 this,
417 event.GetType(),
418 event.GetTimeStamp(),
419 event.GetModifiers(),
420 mouse_event.GetButton(),
421 point,
422 mouse_event.GetClickCount(),
423 movement);
424 event_device_res = mouse_event;
425 }
426 }
427
428 // Check if we need to go to autoscroll mode.
429 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
430 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
431 pp::MouseInputEvent mouse_event(event_device_res);
432 pp::Point pos = mouse_event.GetPosition();
433 EnableAutoscroll(pos);
434 UpdateCursor(CalculateAutoscroll(pos));
435 return true;
436 } else {
437 // Quit autoscrolling on any other event.
438 DisableAutoscroll();
439 }
440
441 #ifdef ENABLE_THUMBNAILS
442 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
443 thumbnails_.SlideOut();
444
445 if (thumbnails_.HandleEvent(event_device_res))
446 return true;
447 #endif
448
449 if (toolbar_->HandleEvent(event_device_res))
450 return true;
451
452 #ifdef ENABLE_THUMBNAILS
453 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
454 pp::MouseInputEvent mouse_event(event);
455 pp::Point pt = mouse_event.GetPosition();
456 pp::Rect v_scrollbar_rc;
457 v_scrollbar_->GetLocation(&v_scrollbar_rc);
458 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
459 // in the webkit that makes event.u.mouse.button
460 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
461 // To work around this issue we use modifier for now, and will switch
462 // to button once the bug is fixed and webkit got merged back to our tree.
463 if (v_scrollbar_rc.Contains(pt) &&
464 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
465 thumbnails_.SlideIn();
466 }
467
468 // When scrollbar is in the scrolling mode we should display thumbnails
469 // even the mouse is outside the thumbnail and scrollbar areas.
470 // If mouse is outside plugin area, we are still getting mouse move events
471 // while scrolling. See bug description for details:
472 // http://code.google.com/p/chromium/issues/detail?id=56444
473 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
474 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
475 !thumbnails_.rect().Contains(pt)) {
476 thumbnails_.SlideOut();
477 }
478 }
479 #endif
480
481 // Need to pass the event to the engine first, since if we're over an edit
482 // control we want it to get keyboard events (like space) instead of the
483 // scrollbar.
484 // TODO: will have to offset the mouse coordinates once we support bidi and
485 // there could be scrollbars on the left.
486 pp::InputEvent offset_event(event_device_res);
487 bool try_engine_first = true;
488 switch (offset_event.GetType()) {
489 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
490 case PP_INPUTEVENT_TYPE_MOUSEUP:
491 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
492 case PP_INPUTEVENT_TYPE_MOUSEENTER:
493 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
494 pp::MouseInputEvent mouse_event(event_device_res);
495 pp::MouseInputEvent mouse_event_dip(event);
496 pp::Point point = mouse_event.GetPosition();
497 point.set_x(point.x() - available_area_.x());
498 offset_event = pp::MouseInputEvent(
499 this,
500 event.GetType(),
501 event.GetTimeStamp(),
502 event.GetModifiers(),
503 mouse_event.GetButton(),
504 point,
505 mouse_event.GetClickCount(),
506 mouse_event.GetMovement());
507 if (!engine_->IsSelecting()) {
508 if (!IsOverlayScrollbar() &&
509 !available_area_.Contains(mouse_event.GetPosition())) {
510 try_engine_first = false;
511 } else if (IsOverlayScrollbar()) {
512 pp::Rect temp;
513 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
514 temp.Contains(mouse_event_dip.GetPosition())) ||
515 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
516 temp.Contains(mouse_event_dip.GetPosition()))) {
517 try_engine_first = false;
518 }
519 }
520 }
521 break;
522 }
523 default:
524 break;
525 }
526 if (try_engine_first && engine_->HandleEvent(offset_event))
527 return true;
528
529 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
530 // there is no horizontal scroll bar.
531 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
532 // Prev/Next page. Spacebar / shift+spacebar should do the same.
533 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
534 pp::KeyboardInputEvent keyboard_event(event);
535 bool no_h_scrollbar = !h_scrollbar_.get();
536 uint32_t key_code = keyboard_event.GetKeyCode();
537 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
538 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
539 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
540 bool has_shift =
541 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
542 bool key_is_space = key_code == ui::VKEY_SPACE;
543 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
544 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
545 }
546 if (page_down) {
547 int page = engine_->GetFirstVisiblePage();
548 if (page == -1)
549 return true;
550 // Engine calculates visible page including delimiter to the page size.
551 // We need to check here if the page itself is completely out of view and
552 // scroll to the next one in that case.
553 if (engine_->GetPageRect(page).bottom() * zoom_ <=
554 v_scrollbar_->GetValue())
555 page++;
556 ScrollToPage(page + 1);
557 UpdateCursor(PP_CURSORTYPE_POINTER);
558 return true;
559 } else if (page_up) {
560 int page = engine_->GetFirstVisiblePage();
561 if (page == -1)
562 return true;
563 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
564 page--;
565 ScrollToPage(page);
566 UpdateCursor(PP_CURSORTYPE_POINTER);
567 return true;
568 }
569 }
570
571 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
572 UpdateCursor(PP_CURSORTYPE_POINTER);
573 return true;
574 }
575
576 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
577 UpdateCursor(PP_CURSORTYPE_POINTER);
578 return true;
579 }
580
581 if (timer_pending_ &&
582 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
583 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
584 timer_factory_.CancelAll();
585 timer_pending_ = false;
586 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
587 engine_->IsSelecting()) {
588 bool set_timer = false;
589 pp::MouseInputEvent mouse_event(event);
590 if (v_scrollbar_.get() &&
591 (mouse_event.GetPosition().y() <= 0 ||
592 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
593 v_scrollbar_->ScrollBy(
594 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
595 set_timer = true;
596 }
597 if (h_scrollbar_.get() &&
598 (mouse_event.GetPosition().x() <= 0 ||
599 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
600 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
601 mouse_event.GetPosition().x() >= 0 ? 1: -1);
602 set_timer = true;
603 }
604
605 if (set_timer) {
606 last_mouse_event_ = pp::MouseInputEvent(event);
607
608 pp::CompletionCallback callback =
609 timer_factory_.NewCallback(&Instance::OnTimerFired);
610 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
611 timer_pending_ = true;
612 }
613 }
614
615 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
616 pp::KeyboardInputEvent keyboard_event(event);
617 const uint32 modifier = event.GetModifiers();
618 if (modifier & kDefaultKeyModifier) {
619 switch (keyboard_event.GetKeyCode()) {
620 case 'A':
621 engine_->SelectAll();
622 return true;
623 }
624 }
625 if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
626 switch (keyboard_event.GetKeyCode()) {
627 case ui::VKEY_OEM_4:
628 // Left bracket.
629 engine_->RotateCounterclockwise();
630 return true;
631 case ui::VKEY_OEM_6:
632 // Right bracket.
633 engine_->RotateClockwise();
634 return true;
635 }
636 }
637 }
638
639 // Return true for unhandled clicks so the plugin takes focus.
640 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
641 }
642
643 void Instance::DidChangeView(const pp::View& view) {
644 pp::Rect view_rect(view.GetRect());
645 float device_scale = 1.0f;
646 float old_device_scale = device_scale_;
647 if (hidpi_enabled_)
648 device_scale = view.GetDeviceScale();
649 pp::Size view_device_size(view_rect.width() * device_scale,
650 view_rect.height() * device_scale);
651 if (view_device_size == plugin_size_ && device_scale == device_scale_)
652 return; // We don't care about the position, only the size.
653
654 image_data_ = pp::ImageData();
655 device_scale_ = device_scale;
656 plugin_dip_size_ = view_rect.size();
657 plugin_size_ = view_device_size;
658
659 paint_manager_.SetSize(view_device_size, device_scale_);
660
661 image_data_ = pp::ImageData(this,
662 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
663 plugin_size_,
664 false);
665 if (image_data_.is_null()) {
666 DCHECK(plugin_size_.IsEmpty());
667 return;
668 }
669
670 // View dimensions changed, disable autoscroll (if it was enabled).
671 DisableAutoscroll();
672
673 OnGeometryChanged(zoom_, old_device_scale);
674 }
675
676 pp::Var Instance::GetInstanceObject() {
677 if (instance_object_.is_undefined()) {
678 PDFScriptableObject* object = new PDFScriptableObject(this);
679 // The pp::Var takes ownership of object here.
680 instance_object_ = pp::VarPrivate(this, object);
681 }
682
683 return instance_object_;
684 }
685
686 void Instance::GetPrintPresetOptionsFromDocument(
687 PP_PdfPrintPresetOptions_Dev* options) {
688 options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
689 options->copies = engine_->GetCopiesToPrint();
690 }
691
692 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
693 pp::Point offset_point(point);
694 ScalePoint(device_scale_, &offset_point);
695 offset_point.set_x(offset_point.x() - available_area_.x());
696 return engine_->GetLinkAtPosition(offset_point);
697 }
698
699 pp::Var Instance::GetSelectedText(bool html) {
700 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
701 return pp::Var();
702 return engine_->GetSelectedText();
703 }
704
705 void Instance::InvalidateWidget(pp::Widget_Dev widget,
706 const pp::Rect& dirty_rect) {
707 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
708 if (!image_data_.is_null())
709 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
710 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
711 if (!image_data_.is_null())
712 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
713 } else {
714 // Possible to hit this condition since sometimes the scrollbar codes posts
715 // a task to do something later, and we could have deleted our reference in
716 // the meantime.
717 return;
718 }
719
720 pp::Rect dirty_rect_scaled = dirty_rect;
721 ScaleRect(device_scale_, &dirty_rect_scaled);
722 paint_manager_.InvalidateRect(dirty_rect_scaled);
723 }
724
725 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
726 uint32_t value) {
727 value = GetScaled(value);
728 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
729 engine_->ScrolledToYPosition(value);
730 pp::Rect rc;
731 v_scrollbar_->GetLocation(&rc);
732 int32 doc_height = GetDocumentPixelHeight();
733 doc_height -= GetScaled(rc.height());
734 #ifdef ENABLE_THUMBNAILS
735 if (thumbnails_.visible()) {
736 thumbnails_.SetPosition(value, doc_height, true);
737 }
738 #endif
739 pp::Point origin(
740 plugin_size_.width() - page_indicator_.rect().width() -
741 GetScaled(GetScrollbarReservedThickness()),
742 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
743 page_indicator_.MoveTo(origin, page_indicator_.visible());
744 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
745 engine_->ScrolledToXPosition(value);
746 }
747 }
748
749 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
750 bool overlay) {
751 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
752 OnGeometryChanged(zoom_, device_scale_);
753 }
754
755 uint32_t Instance::QuerySupportedPrintOutputFormats() {
756 return engine_->QuerySupportedPrintOutputFormats();
757 }
758
759 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
760 // For us num_pages is always equal to the number of pages in the PDF
761 // document irrespective of the printable area.
762 int32_t ret = engine_->GetNumberOfPages();
763 if (!ret)
764 return 0;
765
766 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
767 if ((print_settings.format & supported_formats) == 0)
768 return 0;
769
770 print_settings_.is_printing = true;
771 print_settings_.pepper_print_settings = print_settings;
772 engine_->PrintBegin();
773 return ret;
774 }
775
776 pp::Resource Instance::PrintPages(
777 const PP_PrintPageNumberRange_Dev* page_ranges,
778 uint32_t page_range_count) {
779 if (!print_settings_.is_printing)
780 return pp::Resource();
781
782 print_settings_.print_pages_called_ = true;
783 return engine_->PrintPages(page_ranges, page_range_count,
784 print_settings_.pepper_print_settings);
785 }
786
787 void Instance::PrintEnd() {
788 if (print_settings_.print_pages_called_)
789 UserMetricsRecordAction("PDF.PrintPage");
790 print_settings_.Clear();
791 engine_->PrintEnd();
792 }
793
794 bool Instance::IsPrintScalingDisabled() {
795 return !engine_->GetPrintScaling();
796 }
797
798 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
799 engine_->StartFind(text.c_str(), case_sensitive);
800 return true;
801 }
802
803 void Instance::SelectFindResult(bool forward) {
804 engine_->SelectFindResult(forward);
805 }
806
807 void Instance::StopFind() {
808 engine_->StopFind();
809 }
810
811 void Instance::Zoom(double scale, bool text_only) {
812 UserMetricsRecordAction("PDF.ZoomFromBrowser");
813
814 // If the zoom level doesn't change it means that this zoom change might have
815 // been initiated by the plugin. In that case, we don't want to change the
816 // zoom mode to ZOOM_SCALE as it may have been intentionally set to
817 // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
818 if (scale == zoom_)
819 return;
820
821 SetZoom(ZOOM_SCALE, scale);
822 }
823
824 void Instance::ZoomChanged(double factor) {
825 if (full_)
826 Zoom_Dev::ZoomChanged(factor);
827 }
828
829 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
830 std::vector<PaintManager::ReadyRect>* ready,
831 std::vector<pp::Rect>* pending) {
832 if (image_data_.is_null()) {
833 DCHECK(plugin_size_.IsEmpty());
834 return;
835 }
836 if (first_paint_) {
837 first_paint_ = false;
838 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
839 FillRect(rect, kBackgroundColor);
840 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
841 *pending = paint_rects;
842 return;
843 }
844
845 engine_->PrePaint();
846
847 for (size_t i = 0; i < paint_rects.size(); i++) {
848 // Intersect with plugin area since there could be pending invalidates from
849 // when the plugin area was larger.
850 pp::Rect rect =
851 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
852 if (rect.IsEmpty())
853 continue;
854
855 pp::Rect pdf_rect = available_area_.Intersect(rect);
856 if (!pdf_rect.IsEmpty()) {
857 pdf_rect.Offset(available_area_.x() * -1, 0);
858
859 std::vector<pp::Rect> pdf_ready;
860 std::vector<pp::Rect> pdf_pending;
861 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
862 for (size_t j = 0; j < pdf_ready.size(); ++j) {
863 pdf_ready[j].Offset(available_area_.point());
864 ready->push_back(
865 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
866 }
867 for (size_t j = 0; j < pdf_pending.size(); ++j) {
868 pdf_pending[j].Offset(available_area_.point());
869 pending->push_back(pdf_pending[j]);
870 }
871 }
872
873 for (size_t j = 0; j < background_parts_.size(); ++j) {
874 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
875 if (!intersection.IsEmpty()) {
876 FillRect(intersection, background_parts_[j].color);
877 ready->push_back(
878 PaintManager::ReadyRect(intersection, image_data_, false));
879 }
880 }
881
882 if (document_load_state_ == LOAD_STATE_FAILED) {
883 pp::Point top_center;
884 top_center.set_x(plugin_size_.width() / 2);
885 top_center.set_y(plugin_size_.height() / 2);
886 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
887 }
888
889 #ifdef ENABLE_THUMBNAILS
890 thumbnails_.Paint(&image_data_, rect);
891 #endif
892 }
893
894 engine_->PostPaint();
895
896 // Must paint scrollbars after the background parts, in case we have an
897 // overlay scrollbar that's over the background. We also do this in a separate
898 // loop because the scrollbar painting logic uses the signal of whether there
899 // are pending paints or not to figure out if it should draw right away or
900 // not.
901 for (size_t i = 0; i < paint_rects.size(); i++) {
902 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
903 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
904 }
905
906 if (progress_bar_.visible())
907 PaintOverlayControl(&progress_bar_, &image_data_, ready);
908
909 if (page_indicator_.visible())
910 PaintOverlayControl(&page_indicator_, &image_data_, ready);
911
912 if (toolbar_->current_transparency() != kTransparentAlpha)
913 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
914
915 // Paint autoscroll anchor if needed.
916 if (is_autoscroll_) {
917 size_t limit = ready->size();
918 for (size_t i = 0; i < limit; i++) {
919 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
920 if (!anchor_rect.IsEmpty()) {
921 pp::Rect draw_rc = pp::Rect(
922 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
923 anchor_rect.y() - autoscroll_rect_.y()),
924 anchor_rect.size());
925 // Paint autoscroll anchor.
926 AlphaBlend(autoscroll_anchor_, draw_rc,
927 &image_data_, anchor_rect.point(), kOpaqueAlpha);
928 }
929 }
930 }
931 }
932
933 void Instance::PaintOverlayControl(
934 Control* ctrl,
935 pp::ImageData* image_data,
936 std::vector<PaintManager::ReadyRect>* ready) {
937 // Make sure that we only paint overlay controls over an area that's ready,
938 // i.e. not pending. Otherwise we'll mark the control rect as ready and
939 // it'll overwrite the pdf region.
940 std::list<pp::Rect> ctrl_rects;
941 for (size_t i = 0; i < ready->size(); i++) {
942 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
943 if (!rc.IsEmpty())
944 ctrl_rects.push_back(rc);
945 }
946
947 if (!ctrl_rects.empty()) {
948 ctrl->PaintMultipleRects(image_data, ctrl_rects);
949
950 std::list<pp::Rect>::iterator iter;
951 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
952 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
953 }
954 }
955 }
956
957 void Instance::DidOpen(int32_t result) {
958 if (result == PP_OK) {
959 engine_->HandleDocumentLoad(embed_loader_);
960 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
961 NOTREACHED();
962 }
963 }
964
965 void Instance::DidOpenPreview(int32_t result) {
966 if (result == PP_OK) {
967 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
968 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
969 } else {
970 NOTREACHED();
971 }
972 }
973
974 void Instance::PaintIfWidgetIntersects(
975 pp::Widget_Dev* widget,
976 const pp::Rect& rect,
977 std::vector<PaintManager::ReadyRect>* ready,
978 std::vector<pp::Rect>* pending) {
979 if (!widget)
980 return;
981
982 pp::Rect location;
983 if (!widget->GetLocation(&location))
984 return;
985
986 ScaleRect(device_scale_, &location);
987 location = location.Intersect(rect);
988 if (location.IsEmpty())
989 return;
990
991 if (IsOverlayScrollbar()) {
992 // If we're using overlay scrollbars, and there are pending paints under the
993 // scrollbar, don't update the scrollbar instantly. While it would be nice,
994 // we would need to double buffer the plugin area in order to make this
995 // work. This is because we'd need to always have a copy of what the pdf
996 // under the scrollbar looks like, and additionally we couldn't paint the
997 // pdf under the scrollbar if it's ready until we got the preceding flush.
998 // So in practice, it would make painting slower and introduce extra buffer
999 // copies for the general case.
1000 for (size_t i = 0; i < pending->size(); ++i) {
1001 if ((*pending)[i].Intersects(location))
1002 return;
1003 }
1004
1005 // Even if none of the pending paints are under the scrollbar, we never want
1006 // to paint it if it's over the pdf if there are other pending paints.
1007 // Otherwise different parts of the pdf plugin would display at different
1008 // scroll offsets.
1009 if (!pending->empty() && available_area_.Intersects(rect)) {
1010 pending->push_back(location);
1011 return;
1012 }
1013 }
1014
1015 pp::Rect location_dip = location;
1016 ScaleRect(1.0f / device_scale_, &location_dip);
1017
1018 DCHECK(!image_data_.is_null());
1019 widget->Paint(location_dip, &image_data_);
1020
1021 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
1022 }
1023
1024 void Instance::OnTimerFired(int32_t) {
1025 HandleInputEvent(last_mouse_event_);
1026 }
1027
1028 void Instance::OnClientTimerFired(int32_t id) {
1029 engine_->OnCallback(id);
1030 }
1031
1032 void Instance::OnControlTimerFired(int32_t,
1033 const uint32& control_id,
1034 const uint32& timer_id) {
1035 if (control_id == toolbar_->id()) {
1036 toolbar_->OnTimerFired(timer_id);
1037 } else if (control_id == progress_bar_.id()) {
1038 if (timer_id == delayed_progress_timer_id_) {
1039 if (document_load_state_ == LOAD_STATE_LOADING &&
1040 !progress_bar_.visible()) {
1041 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1042 }
1043 delayed_progress_timer_id_ = 0;
1044 } else {
1045 progress_bar_.OnTimerFired(timer_id);
1046 }
1047 } else if (control_id == kAutoScrollId) {
1048 if (is_autoscroll_) {
1049 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1050 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1051 }
1052 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1053 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1054 }
1055
1056 // Reschedule timer.
1057 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1058 }
1059 } else if (control_id == kPageIndicatorId) {
1060 page_indicator_.OnTimerFired(timer_id);
1061 }
1062 #ifdef ENABLE_THUMBNAILS
1063 else if (control_id == thumbnails_.id()) {
1064 thumbnails_.OnTimerFired(timer_id);
1065 }
1066 #endif
1067 }
1068
1069 void Instance::CalculateBackgroundParts() {
1070 background_parts_.clear();
1071 int v_scrollbar_thickness =
1072 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1073 int h_scrollbar_thickness =
1074 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1075 int width_without_scrollbar = std::max(
1076 plugin_size_.width() - v_scrollbar_thickness, 0);
1077 int height_without_scrollbar = std::max(
1078 plugin_size_.height() - h_scrollbar_thickness, 0);
1079 int left_width = available_area_.x();
1080 int right_start = available_area_.right();
1081 int right_width = abs(width_without_scrollbar - available_area_.right());
1082 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1083
1084 // Add the left, right, and bottom rectangles. Note: we assume only
1085 // horizontal centering.
1086 BackgroundPart part = {
1087 pp::Rect(0, 0, left_width, bottom),
1088 kBackgroundColor
1089 };
1090 if (!part.location.IsEmpty())
1091 background_parts_.push_back(part);
1092 part.location = pp::Rect(right_start, 0, right_width, bottom);
1093 if (!part.location.IsEmpty())
1094 background_parts_.push_back(part);
1095 part.location = pp::Rect(
1096 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1097 if (!part.location.IsEmpty())
1098 background_parts_.push_back(part);
1099
1100 if (h_scrollbar_thickness
1101 #if defined(OS_MACOSX)
1102 ||
1103 #else
1104 &&
1105 #endif
1106 v_scrollbar_thickness) {
1107 part.color = 0xFFFFFFFF;
1108 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1109 plugin_size_.height() - h_scrollbar_thickness,
1110 h_scrollbar_thickness,
1111 v_scrollbar_thickness);
1112 background_parts_.push_back(part);
1113 }
1114 }
1115
1116 int Instance::GetDocumentPixelWidth() const {
1117 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1118 }
1119
1120 int Instance::GetDocumentPixelHeight() const {
1121 return static_cast<int>(ceil(document_size_.height() *
1122 zoom_ *
1123 device_scale_));
1124 }
1125
1126 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1127 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1128 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1129 int stride = image_data_.stride();
1130 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1131 int height = rect.height();
1132 int width = rect.width();
1133 for (int y = 0; y < height; ++y) {
1134 for (int x = 0; x < width; ++x)
1135 *(ptr + x) = color;
1136 ptr += stride / 4;
1137 }
1138 }
1139
1140 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1141 document_size_ = size;
1142
1143 OnGeometryChanged(zoom_, device_scale_);
1144 }
1145
1146 void Instance::Invalidate(const pp::Rect& rect) {
1147 pp::Rect offset_rect(rect);
1148 offset_rect.Offset(available_area_.point());
1149 paint_manager_.InvalidateRect(offset_rect);
1150 }
1151
1152 void Instance::Scroll(const pp::Point& point) {
1153 pp::Rect scroll_area = available_area_;
1154 if (IsOverlayScrollbar()) {
1155 pp::Rect rc;
1156 if (h_scrollbar_.get()) {
1157 h_scrollbar_->GetLocation(&rc);
1158 ScaleRect(device_scale_, &rc);
1159 if (scroll_area.bottom() > rc.y()) {
1160 scroll_area.set_height(rc.y() - scroll_area.y());
1161 paint_manager_.InvalidateRect(rc);
1162 }
1163 }
1164 if (v_scrollbar_.get()) {
1165 v_scrollbar_->GetLocation(&rc);
1166 ScaleRect(device_scale_, &rc);
1167 if (scroll_area.right() > rc.x()) {
1168 scroll_area.set_width(rc.x() - scroll_area.x());
1169 paint_manager_.InvalidateRect(rc);
1170 }
1171 }
1172 }
1173 paint_manager_.ScrollRect(scroll_area, point);
1174
1175 if (toolbar_->current_transparency() != kTransparentAlpha)
1176 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1177
1178 if (progress_bar_.visible())
1179 paint_manager_.InvalidateRect(progress_bar_.rect());
1180
1181 if (is_autoscroll_)
1182 paint_manager_.InvalidateRect(autoscroll_rect_);
1183
1184 if (show_page_indicator_) {
1185 page_indicator_.set_current_page(GetPageNumberToDisplay());
1186 page_indicator_.Splash();
1187 }
1188
1189 if (page_indicator_.visible())
1190 paint_manager_.InvalidateRect(page_indicator_.rect());
1191
1192 // Run the scroll callback asynchronously. This function can be invoked by a
1193 // layout change which should not re-enter into JS synchronously.
1194 pp::CompletionCallback callback =
1195 callback_factory_.NewCallback(&Instance::RunCallback,
1196 on_scroll_callback_);
1197 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1198 }
1199
1200 void Instance::ScrollToX(int position) {
1201 if (!h_scrollbar_.get()) {
1202 NOTREACHED();
1203 return;
1204 }
1205 int position_dip = static_cast<int>(position / device_scale_);
1206 h_scrollbar_->SetValue(position_dip);
1207 }
1208
1209 void Instance::ScrollToY(int position) {
1210 if (!v_scrollbar_.get()) {
1211 NOTREACHED();
1212 return;
1213 }
1214 int position_dip = static_cast<int>(position / device_scale_);
1215 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1216 }
1217
1218 void Instance::ScrollToPage(int page) {
1219 if (!v_scrollbar_.get())
1220 return;
1221
1222 if (engine_->GetNumberOfPages() == 0)
1223 return;
1224
1225 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1226 pp::Rect rect = engine_->GetPageRect(index);
1227 // If we are trying to scroll pass the last page,
1228 // scroll to the end of the last page.
1229 int position = index < page ? rect.bottom() : rect.y();
1230 ScrollToY(position * zoom_ * device_scale_);
1231 }
1232
1233 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1234 std::string url_copy(url);
1235
1236 // Empty |url_copy| is ok, and will effectively be a reload.
1237 // Skip the code below so an empty URL does not turn into "http://", which
1238 // will cause GURL to fail a DCHECK.
1239 if (!url_copy.empty()) {
1240 // If |url_copy| starts with '#', then it's for the same URL with a
1241 // different URL fragment.
1242 if (url_copy[0] == '#') {
1243 url_copy = url_ + url_copy;
1244 // Changing the href does not actually do anything when navigating in the
1245 // same tab, so do the actual page scroll here. Then fall through so the
1246 // href gets updated.
1247 if (!open_in_new_tab) {
1248 int page_number = GetInitialPage(url_copy);
1249 if (page_number >= 0)
1250 ScrollToPage(page_number);
1251 }
1252 }
1253 // If there's no scheme, add http.
1254 if (url_copy.find("://") == std::string::npos &&
1255 url_copy.find("mailto:") == std::string::npos) {
1256 url_copy = "http://" + url_copy;
1257 }
1258 // Make sure |url_copy| starts with a valid scheme.
1259 if (url_copy.find("http://") != 0 &&
1260 url_copy.find("https://") != 0 &&
1261 url_copy.find("ftp://") != 0 &&
1262 url_copy.find("file://") != 0 &&
1263 url_copy.find("mailto:") != 0) {
1264 return;
1265 }
1266 // Make sure |url_copy| is not only a scheme.
1267 if (url_copy == "http://" ||
1268 url_copy == "https://" ||
1269 url_copy == "ftp://" ||
1270 url_copy == "file://" ||
1271 url_copy == "mailto:") {
1272 return;
1273 }
1274 }
1275 if (open_in_new_tab) {
1276 GetWindowObject().Call("open", url_copy);
1277 } else {
1278 GetWindowObject().GetProperty("top").GetProperty("location").
1279 SetProperty("href", url_copy);
1280 }
1281 }
1282
1283 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1284 if (cursor == cursor_)
1285 return;
1286 cursor_ = cursor;
1287
1288 const PPB_CursorControl_Dev* cursor_interface =
1289 reinterpret_cast<const PPB_CursorControl_Dev*>(
1290 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1291 if (!cursor_interface) {
1292 NOTREACHED();
1293 return;
1294 }
1295
1296 cursor_interface->SetCursor(
1297 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1298 }
1299
1300 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1301 if (!v_scrollbar_.get())
1302 return;
1303
1304 float inverse_scale = 1.0f / device_scale_;
1305 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1306 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1307 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1308 }
1309
1310 v_scrollbar_->SetTickMarks(
1311 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1312 }
1313
1314 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1315 NumberOfFindResultsChanged(total, final_result);
1316 }
1317
1318 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1319 DCHECK_GE(current_find_index, 0);
1320 SelectedFindResultChanged(current_find_index);
1321 }
1322
1323 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1324 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1325 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1326 switch (control_id) {
1327 case kFitToPageButtonId:
1328 UserMetricsRecordAction("PDF.FitToPageButton");
1329 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1330 ZoomChanged(zoom_);
1331 break;
1332 case kFitToWidthButtonId:
1333 UserMetricsRecordAction("PDF.FitToWidthButton");
1334 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1335 ZoomChanged(zoom_);
1336 break;
1337 case kZoomOutButtonId:
1338 case kZoomInButtonId:
1339 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1340 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1341 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1342 ZoomChanged(zoom_);
1343 break;
1344 case kSaveButtonId:
1345 UserMetricsRecordAction("PDF.SaveButton");
1346 SaveAs();
1347 break;
1348 case kPrintButtonId:
1349 UserMetricsRecordAction("PDF.PrintButton");
1350 Print();
1351 break;
1352 }
1353 }
1354 if (control_id == kThumbnailsId &&
1355 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1356 int page = *static_cast<int*>(data);
1357 pp::Rect page_rc(engine_->GetPageRect(page));
1358 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1359 }
1360 }
1361
1362 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1363 paint_manager_.InvalidateRect(rc);
1364 }
1365
1366 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1367 current_timer_id_++;
1368 pp::CompletionCallback callback =
1369 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1370 control_id,
1371 current_timer_id_);
1372 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1373 return current_timer_id_;
1374 }
1375
1376 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1377 // TODO(gene): set event capture here.
1378 }
1379
1380 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1381 UpdateCursor(cursor_type);
1382 }
1383
1384 pp::Instance* Instance::GetInstance() {
1385 return this;
1386 }
1387
1388 void Instance::GetDocumentPassword(
1389 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1390 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1391 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1392 *callback.output() = result.pp_var();
1393 callback.Run(PP_OK);
1394 }
1395
1396 void Instance::Alert(const std::string& message) {
1397 GetWindowObject().Call("alert", message);
1398 }
1399
1400 bool Instance::Confirm(const std::string& message) {
1401 pp::Var result = GetWindowObject().Call("confirm", message);
1402 return result.is_bool() ? result.AsBool() : false;
1403 }
1404
1405 std::string Instance::Prompt(const std::string& question,
1406 const std::string& default_answer) {
1407 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1408 return result.is_string() ? result.AsString() : std::string();
1409 }
1410
1411 std::string Instance::GetURL() {
1412 return url_;
1413 }
1414
1415 void Instance::Email(const std::string& to,
1416 const std::string& cc,
1417 const std::string& bcc,
1418 const std::string& subject,
1419 const std::string& body) {
1420 std::string javascript =
1421 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1422 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1423 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1424 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1425 "&body=" + net::EscapeUrlEncodedData(body, false) +
1426 "';var temp = window.open(href, '_blank', " +
1427 "'width=1,height=1');if(temp) temp.close();";
1428 ExecuteScript(javascript);
1429 }
1430
1431 void Instance::Print() {
1432 if (!printing_enabled_ ||
1433 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1434 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1435 return;
1436 }
1437
1438 pp::CompletionCallback callback =
1439 callback_factory_.NewCallback(&Instance::OnPrint);
1440 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1441 }
1442
1443 void Instance::OnPrint(int32_t) {
1444 pp::PDF::Print(this);
1445 }
1446
1447 void Instance::SaveAs() {
1448 pp::PDF::SaveAs(this);
1449 }
1450
1451 void Instance::SubmitForm(const std::string& url,
1452 const void* data,
1453 int length) {
1454 pp::URLRequestInfo request(this);
1455 request.SetURL(url);
1456 request.SetMethod("POST");
1457 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1458
1459 pp::CompletionCallback callback =
1460 form_factory_.NewCallback(&Instance::FormDidOpen);
1461 form_loader_ = CreateURLLoaderInternal();
1462 int rv = form_loader_.Open(request, callback);
1463 if (rv != PP_OK_COMPLETIONPENDING)
1464 callback.Run(rv);
1465 }
1466
1467 void Instance::FormDidOpen(int32_t result) {
1468 // TODO: inform the user of success/failure.
1469 if (result != PP_OK) {
1470 NOTREACHED();
1471 }
1472 }
1473
1474 std::string Instance::ShowFileSelectionDialog() {
1475 // Seems like very low priority to implement, since the pdf has no way to get
1476 // the file data anyways. Javascript doesn't let you do this synchronously.
1477 NOTREACHED();
1478 return std::string();
1479 }
1480
1481 pp::URLLoader Instance::CreateURLLoader() {
1482 if (full_) {
1483 if (!did_call_start_loading_) {
1484 did_call_start_loading_ = true;
1485 pp::PDF::DidStartLoading(this);
1486 }
1487
1488 // Disable save and print until the document is fully loaded, since they
1489 // would generate an incomplete document. Need to do this each time we
1490 // call DidStartLoading since that resets the content restrictions.
1491 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1492 CONTENT_RESTRICTION_PRINT);
1493 }
1494
1495 return CreateURLLoaderInternal();
1496 }
1497
1498 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1499 pp::CompletionCallback callback =
1500 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1501 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1502 }
1503
1504 void Instance::SearchString(const base::char16* string,
1505 const base::char16* term,
1506 bool case_sensitive,
1507 std::vector<SearchStringResult>* results) {
1508 if (!pp::PDF::IsAvailable()) {
1509 NOTREACHED();
1510 return;
1511 }
1512
1513 PP_PrivateFindResult* pp_results;
1514 int count = 0;
1515 pp::PDF::SearchString(
1516 this,
1517 reinterpret_cast<const unsigned short*>(string),
1518 reinterpret_cast<const unsigned short*>(term),
1519 case_sensitive,
1520 &pp_results,
1521 &count);
1522
1523 results->resize(count);
1524 for (int i = 0; i < count; ++i) {
1525 (*results)[i].start_index = pp_results[i].start_index;
1526 (*results)[i].length = pp_results[i].length;
1527 }
1528
1529 pp::Memory_Dev memory;
1530 memory.MemFree(pp_results);
1531 }
1532
1533 void Instance::DocumentPaintOccurred() {
1534 if (painted_first_page_)
1535 return;
1536
1537 painted_first_page_ = true;
1538 UpdateToolbarPosition(false);
1539 toolbar_->Splash(kToolbarSplashTimeoutMs);
1540
1541 if (engine_->GetNumberOfPages() > 1)
1542 show_page_indicator_ = true;
1543 else
1544 show_page_indicator_ = false;
1545
1546 if (v_scrollbar_.get() && show_page_indicator_) {
1547 page_indicator_.set_current_page(GetPageNumberToDisplay());
1548 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1549 kPageIndicatorInitialFadeTimeoutMs);
1550 }
1551 }
1552
1553 void Instance::DocumentLoadComplete(int page_count) {
1554 // Clear focus state for OSK.
1555 FormTextFieldFocusChange(false);
1556
1557 // Update progress control.
1558 if (progress_bar_.visible())
1559 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1560
1561 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1562 document_load_state_ = LOAD_STATE_COMPLETE;
1563 UserMetricsRecordAction("PDF.LoadSuccess");
1564
1565 if (did_call_start_loading_) {
1566 pp::PDF::DidStopLoading(this);
1567 did_call_start_loading_ = false;
1568 }
1569
1570 if (on_load_callback_.is_string())
1571 ExecuteScript(on_load_callback_);
1572 // Note: If we are in print preview mode on_load_callback_ might call
1573 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1574 // #page=N is not supported in Print Preview.
1575 if (!IsPrintPreview()) {
1576 int initial_page = GetInitialPage(url_);
1577 if (initial_page >= 0)
1578 ScrollToPage(initial_page);
1579 }
1580
1581 if (!full_)
1582 return;
1583 if (!pp::PDF::IsAvailable())
1584 return;
1585
1586 int content_restrictions =
1587 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1588 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1589 content_restrictions |= CONTENT_RESTRICTION_COPY;
1590
1591 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1592 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1593 printing_enabled_ = false;
1594 if (current_tb_info_ == kPDFToolbarButtons) {
1595 // Remove Print button.
1596 CreateToolbar(kPDFNoPrintToolbarButtons,
1597 arraysize(kPDFNoPrintToolbarButtons));
1598 UpdateToolbarPosition(false);
1599 Invalidate(pp::Rect(plugin_size_));
1600 }
1601 }
1602
1603 pp::PDF::SetContentRestriction(this, content_restrictions);
1604
1605 pp::PDF::HistogramPDFPageCount(this, page_count);
1606 }
1607
1608 void Instance::RotateClockwise() {
1609 engine_->RotateClockwise();
1610 }
1611
1612 void Instance::RotateCounterclockwise() {
1613 engine_->RotateCounterclockwise();
1614 }
1615
1616 void Instance::PreviewDocumentLoadComplete() {
1617 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1618 preview_pages_info_.empty()) {
1619 return;
1620 }
1621
1622 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1623
1624 int dest_page_index = preview_pages_info_.front().second;
1625 int src_page_index =
1626 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1627 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1628 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1629
1630 preview_pages_info_.pop();
1631 // |print_preview_page_count_| is not updated yet. Do not load any
1632 // other preview pages till we get this information.
1633 if (print_preview_page_count_ == 0)
1634 return;
1635
1636 if (preview_pages_info_.size())
1637 LoadAvailablePreviewPage();
1638 }
1639
1640 void Instance::DocumentLoadFailed() {
1641 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1642 UserMetricsRecordAction("PDF.LoadFailure");
1643
1644 // Hide progress control.
1645 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1646
1647 if (did_call_start_loading_) {
1648 pp::PDF::DidStopLoading(this);
1649 did_call_start_loading_ = false;
1650 }
1651
1652 document_load_state_ = LOAD_STATE_FAILED;
1653 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1654 }
1655
1656 void Instance::PreviewDocumentLoadFailed() {
1657 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1658 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1659 preview_pages_info_.empty()) {
1660 return;
1661 }
1662
1663 preview_document_load_state_ = LOAD_STATE_FAILED;
1664 preview_pages_info_.pop();
1665
1666 if (preview_pages_info_.size())
1667 LoadAvailablePreviewPage();
1668 }
1669
1670 pp::Instance* Instance::GetPluginInstance() {
1671 return GetInstance();
1672 }
1673
1674 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1675 std::string metric("PDF_Unsupported_");
1676 metric += feature;
1677 if (!unsupported_features_reported_.count(metric)) {
1678 unsupported_features_reported_.insert(metric);
1679 UserMetricsRecordAction(metric);
1680 }
1681
1682 // Since we use an info bar, only do this for full frame plugins..
1683 if (!full_)
1684 return;
1685
1686 if (told_browser_about_unsupported_feature_)
1687 return;
1688 told_browser_about_unsupported_feature_ = true;
1689
1690 pp::PDF::HasUnsupportedFeature(this);
1691 }
1692
1693 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1694 double progress = 0.0;
1695 if (doc_size == 0) {
1696 // Document size is unknown. Use heuristics.
1697 // We'll make progress logarithmic from 0 to 100M.
1698 static const double kFactor = log(100000000.0) / 100.0;
1699 if (available > 0) {
1700 progress = log(static_cast<double>(available)) / kFactor;
1701 if (progress > 100.0)
1702 progress = 100.0;
1703 }
1704 } else {
1705 progress = 100.0 * static_cast<double>(available) / doc_size;
1706 }
1707 progress_bar_.SetProgress(progress);
1708 }
1709
1710 void Instance::FormTextFieldFocusChange(bool in_focus) {
1711 if (!text_input_.get())
1712 return;
1713 if (in_focus)
1714 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1715 else
1716 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1717 }
1718
1719 // Called by PDFScriptableObject.
1720 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1721 std::string method_str = method.AsString();
1722 return (method_str == kJSAccessibility ||
1723 method_str == kJSDocumentLoadComplete ||
1724 method_str == kJSGetHeight ||
1725 method_str == kJSGetHorizontalScrollbarThickness ||
1726 method_str == kJSGetPageLocationNormalized ||
1727 method_str == kJSGetSelectedText ||
1728 method_str == kJSGetVerticalScrollbarThickness ||
1729 method_str == kJSGetWidth ||
1730 method_str == kJSGetZoomLevel ||
1731 method_str == kJSGoToPage ||
1732 method_str == kJSGrayscale ||
1733 method_str == kJSLoadPreviewPage ||
1734 method_str == kJSOnLoad ||
1735 method_str == kJSOnPluginSizeChanged ||
1736 method_str == kJSOnScroll ||
1737 method_str == kJSPageXOffset ||
1738 method_str == kJSPageYOffset ||
1739 method_str == kJSPrintPreviewPageCount ||
1740 method_str == kJSReload ||
1741 method_str == kJSRemovePrintButton ||
1742 method_str == kJSResetPrintPreviewUrl ||
1743 method_str == kJSSendKeyEvent ||
1744 method_str == kJSSetPageNumbers ||
1745 method_str == kJSSetPageXOffset ||
1746 method_str == kJSSetPageYOffset ||
1747 method_str == kJSSetZoomLevel ||
1748 method_str == kJSZoomFitToHeight ||
1749 method_str == kJSZoomFitToWidth ||
1750 method_str == kJSZoomIn ||
1751 method_str == kJSZoomOut);
1752 }
1753
1754 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1755 const std::vector<pp::Var>& args,
1756 pp::Var* exception) {
1757 std::string method_str = method.AsString();
1758 if (method_str == kJSGrayscale) {
1759 if (args.size() == 1 && args[0].is_bool()) {
1760 engine_->SetGrayscale(args[0].AsBool());
1761 // Redraw
1762 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1763 #ifdef ENABLE_THUMBNAILS
1764 if (thumbnails_.visible())
1765 thumbnails_.Show(true, true);
1766 #endif
1767 return pp::Var(true);
1768 }
1769 return pp::Var(false);
1770 }
1771 if (method_str == kJSOnLoad) {
1772 if (args.size() == 1 && args[0].is_string()) {
1773 on_load_callback_ = args[0];
1774 return pp::Var(true);
1775 }
1776 return pp::Var(false);
1777 }
1778 if (method_str == kJSOnScroll) {
1779 if (args.size() == 1 && args[0].is_string()) {
1780 on_scroll_callback_ = args[0];
1781 return pp::Var(true);
1782 }
1783 return pp::Var(false);
1784 }
1785 if (method_str == kJSOnPluginSizeChanged) {
1786 if (args.size() == 1 && args[0].is_string()) {
1787 on_plugin_size_changed_callback_ = args[0];
1788 return pp::Var(true);
1789 }
1790 return pp::Var(false);
1791 }
1792 if (method_str == kJSReload) {
1793 document_load_state_ = LOAD_STATE_LOADING;
1794 if (!full_)
1795 LoadUrl(url_);
1796 preview_engine_.reset();
1797 print_preview_page_count_ = 0;
1798 engine_.reset(PDFEngine::Create(this));
1799 engine_->New(url_.c_str());
1800 #ifdef ENABLE_THUMBNAILS
1801 thumbnails_.ResetEngine(engine_.get());
1802 #endif
1803 return pp::Var();
1804 }
1805 if (method_str == kJSResetPrintPreviewUrl) {
1806 if (args.size() == 1 && args[0].is_string()) {
1807 url_ = args[0].AsString();
1808 preview_pages_info_ = std::queue<PreviewPageInfo>();
1809 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1810 }
1811 return pp::Var();
1812 }
1813 if (method_str == kJSZoomFitToHeight) {
1814 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1815 return pp::Var();
1816 }
1817 if (method_str == kJSZoomFitToWidth) {
1818 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1819 return pp::Var();
1820 }
1821 if (method_str == kJSZoomIn) {
1822 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1823 return pp::Var();
1824 }
1825 if (method_str == kJSZoomOut) {
1826 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1827 return pp::Var();
1828 }
1829 if (method_str == kJSSetZoomLevel) {
1830 if (args.size() == 1 && args[0].is_number())
1831 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1832 return pp::Var();
1833 }
1834 if (method_str == kJSGetZoomLevel) {
1835 return pp::Var(zoom_);
1836 }
1837 if (method_str == kJSGetHeight) {
1838 return pp::Var(plugin_size_.height());
1839 }
1840 if (method_str == kJSGetWidth) {
1841 return pp::Var(plugin_size_.width());
1842 }
1843 if (method_str == kJSGetHorizontalScrollbarThickness) {
1844 return pp::Var(
1845 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1846 }
1847 if (method_str == kJSGetVerticalScrollbarThickness) {
1848 return pp::Var(
1849 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1850 }
1851 if (method_str == kJSGetSelectedText) {
1852 return GetSelectedText(false);
1853 }
1854 if (method_str == kJSDocumentLoadComplete) {
1855 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1856 }
1857 if (method_str == kJSPageYOffset) {
1858 return pp::Var(static_cast<int32_t>(
1859 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1860 }
1861 if (method_str == kJSSetPageYOffset) {
1862 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1863 ScrollToY(GetScaled(args[0].AsInt()));
1864 return pp::Var();
1865 }
1866 if (method_str == kJSPageXOffset) {
1867 return pp::Var(static_cast<int32_t>(
1868 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1869 }
1870 if (method_str == kJSSetPageXOffset) {
1871 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1872 ScrollToX(GetScaled(args[0].AsInt()));
1873 return pp::Var();
1874 }
1875 if (method_str == kJSRemovePrintButton) {
1876 CreateToolbar(kPrintPreviewToolbarButtons,
1877 arraysize(kPrintPreviewToolbarButtons));
1878 UpdateToolbarPosition(false);
1879 Invalidate(pp::Rect(plugin_size_));
1880 return pp::Var();
1881 }
1882 if (method_str == kJSGoToPage) {
1883 if (args.size() == 1 && args[0].is_string()) {
1884 ScrollToPage(atoi(args[0].AsString().c_str()));
1885 }
1886 return pp::Var();
1887 }
1888 if (method_str == kJSAccessibility) {
1889 if (args.size() == 0) {
1890 base::DictionaryValue node;
1891 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1892 node.SetBoolean(kAccessibleLoaded,
1893 document_load_state_ != LOAD_STATE_LOADING);
1894 bool has_permissions =
1895 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1896 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1897 node.SetBoolean(kAccessibleCopyable, has_permissions);
1898 std::string json;
1899 base::JSONWriter::Write(&node, &json);
1900 return pp::Var(json);
1901 } else if (args[0].is_number()) {
1902 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1903 }
1904 }
1905 if (method_str == kJSPrintPreviewPageCount) {
1906 if (args.size() == 1 && args[0].is_number())
1907 SetPrintPreviewMode(args[0].AsInt());
1908 return pp::Var();
1909 }
1910 if (method_str == kJSLoadPreviewPage) {
1911 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1912 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1913 return pp::Var();
1914 }
1915 if (method_str == kJSGetPageLocationNormalized) {
1916 const size_t kMaxLength = 30;
1917 char location_info[kMaxLength];
1918 int page_idx = engine_->GetMostVisiblePage();
1919 if (page_idx < 0)
1920 return pp::Var(std::string());
1921 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1922 int v_scrollbar_reserved_thickness =
1923 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1924
1925 rect.set_x(rect.x() + ((plugin_size_.width() -
1926 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1927 base::snprintf(location_info,
1928 kMaxLength,
1929 "%0.4f;%0.4f;%0.4f;%0.4f;",
1930 rect.x() / static_cast<float>(plugin_size_.width()),
1931 rect.y() / static_cast<float>(plugin_size_.height()),
1932 rect.width() / static_cast<float>(plugin_size_.width()),
1933 rect.height()/ static_cast<float>(plugin_size_.height()));
1934 return pp::Var(std::string(location_info));
1935 }
1936 if (method_str == kJSSetPageNumbers) {
1937 if (args.size() != 1 || !args[0].is_string())
1938 return pp::Var();
1939 const int num_pages_signed = engine_->GetNumberOfPages();
1940 if (num_pages_signed <= 0)
1941 return pp::Var();
1942 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1943 base::JSONReader::Read(args[0].AsString(), false)));
1944 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1945 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1946 return pp::Var();
1947
1948 std::vector<int> print_preview_page_numbers;
1949 for (size_t index = 0; index < num_pages; ++index) {
1950 int page_number = 0; // |page_number| is 1-based.
1951 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1952 return pp::Var();
1953 print_preview_page_numbers.push_back(page_number);
1954 }
1955 print_preview_page_numbers_ = print_preview_page_numbers;
1956 page_indicator_.set_current_page(GetPageNumberToDisplay());
1957 return pp::Var();
1958 }
1959 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1960 // In JS, creating a synthetic keyboard event and dispatching it always
1961 // result in a keycode of 0.
1962 if (method_str == kJSSendKeyEvent) {
1963 if (args.size() == 1 && args[0].is_number()) {
1964 pp::KeyboardInputEvent event(
1965 this, // instance
1966 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1967 0, // timestamp, not used for kbd events.
1968 0, // no modifiers.
1969 args[0].AsInt(), // keycode.
1970 pp::Var()); // no char text needed.
1971 HandleInputEvent(event);
1972 }
1973 }
1974 return pp::Var();
1975 }
1976
1977 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1978 bool force_no_horizontal_scrollbar = false;
1979 int scrollbar_thickness = GetScrollbarThickness();
1980
1981 if (old_device_scale != device_scale_) {
1982 // Change in device scale forces us to recreate resources
1983 ConfigureNumberImageGenerator();
1984
1985 CreateToolbar(current_tb_info_, current_tb_info_size_);
1986 // Load autoscroll anchor image.
1987 autoscroll_anchor_ =
1988 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1989
1990 ConfigurePageIndicator();
1991 ConfigureProgressBar();
1992
1993 pp::Point scroll_position = engine_->GetScrollPosition();
1994 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1995 engine_->SetScrollPosition(scroll_position);
1996 }
1997
1998 UpdateZoomScale();
1999 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
2000 engine_->ZoomUpdated(zoom_ * device_scale_);
2001 if (zoom_ != old_zoom)
2002 ZoomChanged(zoom_);
2003
2004 available_area_ = pp::Rect(plugin_size_);
2005 if (GetDocumentPixelHeight() > plugin_size_.height()) {
2006 CreateVerticalScrollbar();
2007 } else {
2008 DestroyVerticalScrollbar();
2009 }
2010
2011 int v_scrollbar_reserved_thickness =
2012 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
2013
2014 if (!force_no_horizontal_scrollbar &&
2015 GetDocumentPixelWidth() >
2016 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
2017 CreateHorizontalScrollbar();
2018
2019 // Adding the horizontal scrollbar now might cause us to need vertical
2020 // scrollbars.
2021 if (GetDocumentPixelHeight() >
2022 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
2023 CreateVerticalScrollbar();
2024 }
2025
2026 } else {
2027 DestroyHorizontalScrollbar();
2028 }
2029
2030 #ifdef ENABLE_THUMBNAILS
2031 int thumbnails_pos = 0, thumbnails_total = 0;
2032 #endif
2033 if (v_scrollbar_.get()) {
2034 v_scrollbar_->SetScale(device_scale_);
2035 available_area_.set_width(
2036 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
2037
2038 #ifdef ENABLE_THUMBNAILS
2039 int height = plugin_size_.height();
2040 #endif
2041 int height_dip = plugin_dip_size_.height();
2042
2043 #if defined(OS_MACOSX)
2044 // Before Lion, Mac always had the resize at the bottom. After that, it
2045 // never did.
2046 if ((base::mac::IsOSSnowLeopard() && full_) ||
2047 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2048 #else
2049 if (h_scrollbar_.get()) {
2050 #endif // defined(OS_MACOSX)
2051 #ifdef ENABLE_THUMBNAILS
2052 height -= GetScaled(GetScrollbarThickness());
2053 #endif
2054 height_dip -= GetScrollbarThickness();
2055 }
2056 #ifdef ENABLE_THUMBNAILS
2057 int32 doc_height = GetDocumentPixelHeight();
2058 #endif
2059 int32 doc_height_dip =
2060 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2061 #if defined(OS_MACOSX)
2062 // On the Mac we always allow room for the resize button (whose width is
2063 // the same as that of the scrollbar) in full mode. However, if there is no
2064 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2065 // end of the document. This is because the scrollbar assumes that its own
2066 // height (in the case of a vscroll bar) is the same as the height of the
2067 // viewport. Since the viewport is actually larger, we compensate by
2068 // adjusting the document height. Similar logic applies below for the
2069 // horizontal scrollbar.
2070 // For example, if the document size is 1000, and the viewport size is 200,
2071 // then the scrollbar position at the end will be 800. In this case the
2072 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2073 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2074 // be 785. Making the document size 985 achieves this.
2075 if (full_ && !h_scrollbar_.get()) {
2076 #ifdef ENABLE_THUMBNAILS
2077 doc_height -= GetScaled(GetScrollbarThickness());
2078 #endif
2079 doc_height_dip -= GetScrollbarThickness();
2080 }
2081 #endif // defined(OS_MACOSX)
2082
2083 int32 position;
2084 position = v_scrollbar_->GetValue();
2085 position = static_cast<int>(position * zoom_ / old_zoom);
2086 valid_v_range_ = doc_height_dip - height_dip;
2087 if (position > valid_v_range_)
2088 position = valid_v_range_;
2089
2090 v_scrollbar_->SetValue(position);
2091
2092 PP_Rect loc;
2093 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2094 if (IsOverlayScrollbar())
2095 loc.point.x -= scrollbar_thickness;
2096 loc.point.y = 0;
2097 loc.size.width = scrollbar_thickness;
2098 loc.size.height = height_dip;
2099 v_scrollbar_->SetLocation(loc);
2100 v_scrollbar_->SetDocumentSize(doc_height_dip);
2101
2102 #ifdef ENABLE_THUMBNAILS
2103 thumbnails_pos = position;
2104 thumbnails_total = doc_height - height;
2105 #endif
2106 }
2107
2108 if (h_scrollbar_.get()) {
2109 h_scrollbar_->SetScale(device_scale_);
2110 available_area_.set_height(
2111 std::max(0, plugin_size_.height() -
2112 GetScaled(GetScrollbarReservedThickness())));
2113
2114 int width_dip = plugin_dip_size_.width();
2115
2116 // See note above.
2117 #if defined(OS_MACOSX)
2118 if ((base::mac::IsOSSnowLeopard() && full_) ||
2119 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2120 #else
2121 if (v_scrollbar_.get()) {
2122 #endif
2123 width_dip -= GetScrollbarThickness();
2124 }
2125 int32 doc_width_dip =
2126 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2127 #if defined(OS_MACOSX)
2128 // See comment in the above if (v_scrollbar_.get()) block.
2129 if (full_ && !v_scrollbar_.get())
2130 doc_width_dip -= GetScrollbarThickness();
2131 #endif // defined(OS_MACOSX)
2132
2133 int32 position;
2134 position = h_scrollbar_->GetValue();
2135 position = static_cast<int>(position * zoom_ / old_zoom);
2136 position = std::min(position, doc_width_dip - width_dip);
2137
2138 h_scrollbar_->SetValue(position);
2139
2140 PP_Rect loc;
2141 loc.point.x = 0;
2142 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2143 if (IsOverlayScrollbar())
2144 loc.point.y -= scrollbar_thickness;
2145 loc.size.width = width_dip;
2146 loc.size.height = scrollbar_thickness;
2147 h_scrollbar_->SetLocation(loc);
2148 h_scrollbar_->SetDocumentSize(doc_width_dip);
2149 }
2150
2151 int doc_width = GetDocumentPixelWidth();
2152 if (doc_width < available_area_.width()) {
2153 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2154 available_area_.set_width(doc_width);
2155 }
2156 int doc_height = GetDocumentPixelHeight();
2157 if (doc_height < available_area_.height()) {
2158 available_area_.set_height(doc_height);
2159 }
2160
2161 // We'll invalidate the entire plugin anyways.
2162 UpdateToolbarPosition(false);
2163 UpdateProgressBarPosition(false);
2164 UpdatePageIndicatorPosition(false);
2165
2166 #ifdef ENABLE_THUMBNAILS
2167 // Update thumbnail control position.
2168 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2169 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2170 GetScaled(kThumbnailsWidth), plugin_size_.height());
2171 if (v_scrollbar_.get())
2172 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2173 if (h_scrollbar_.get())
2174 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2175 thumbnails_.SetRect(thumbnails_rc, false);
2176 #endif
2177
2178 CalculateBackgroundParts();
2179 engine_->PageOffsetUpdated(available_area_.point());
2180 engine_->PluginSizeUpdated(available_area_.size());
2181
2182 if (!document_size_.GetArea())
2183 return;
2184 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2185
2186 // Run the plugin size change callback asynchronously. This function can be
2187 // invoked by a layout change which should not re-enter into JS synchronously.
2188 pp::CompletionCallback callback =
2189 callback_factory_.NewCallback(&Instance::RunCallback,
2190 on_plugin_size_changed_callback_);
2191 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2192 }
2193
2194 void Instance::RunCallback(int32_t, pp::Var callback) {
2195 if (callback.is_string())
2196 ExecuteScript(callback);
2197 }
2198
2199 void Instance::CreateHorizontalScrollbar() {
2200 if (h_scrollbar_.get())
2201 return;
2202
2203 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2204 }
2205
2206 void Instance::CreateVerticalScrollbar() {
2207 if (v_scrollbar_.get())
2208 return;
2209
2210 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2211 }
2212
2213 void Instance::DestroyHorizontalScrollbar() {
2214 if (!h_scrollbar_.get())
2215 return;
2216 if (h_scrollbar_->GetValue())
2217 engine_->ScrolledToXPosition(0);
2218 h_scrollbar_.reset();
2219 }
2220
2221 void Instance::DestroyVerticalScrollbar() {
2222 if (!v_scrollbar_.get())
2223 return;
2224 if (v_scrollbar_->GetValue())
2225 engine_->ScrolledToYPosition(0);
2226 v_scrollbar_.reset();
2227 page_indicator_.Show(false, true);
2228 }
2229
2230 int Instance::GetScrollbarThickness() {
2231 if (scrollbar_thickness_ == -1) {
2232 pp::Scrollbar_Dev temp_scrollbar(this, false);
2233 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2234 scrollbar_reserved_thickness_ =
2235 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2236 }
2237
2238 return scrollbar_thickness_;
2239 }
2240
2241 int Instance::GetScrollbarReservedThickness() {
2242 GetScrollbarThickness();
2243 return scrollbar_reserved_thickness_;
2244 }
2245
2246 bool Instance::IsOverlayScrollbar() {
2247 return GetScrollbarReservedThickness() == 0;
2248 }
2249
2250 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2251 toolbar_.reset(new FadingControls());
2252
2253 DCHECK(tb_info);
2254 DCHECK(size >= 0);
2255
2256 // Remember the current toolbar information in case we need to recreate the
2257 // images later.
2258 current_tb_info_ = tb_info;
2259 current_tb_info_size_ = size;
2260
2261 int max_height = 0;
2262 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2263 ScalePoint(device_scale_, &origin);
2264
2265 std::list<Button*> buttons;
2266 for (size_t i = 0; i < size; i++) {
2267 Button* btn = new Button;
2268 pp::ImageData normal_face =
2269 CreateResourceImage(tb_info[i].normal);
2270 btn->CreateButton(tb_info[i].id,
2271 origin,
2272 true,
2273 toolbar_.get(),
2274 tb_info[i].style,
2275 normal_face,
2276 CreateResourceImage(tb_info[i].highlighted),
2277 CreateResourceImage(tb_info[i].pressed));
2278 buttons.push_back(btn);
2279
2280 origin += pp::Point(normal_face.size().width(), 0);
2281 max_height = std::max(max_height, normal_face.size().height());
2282 }
2283
2284 pp::Rect rc_toolbar(0, 0,
2285 origin.x() + GetToolbarRightOffset(),
2286 origin.y() + max_height + GetToolbarBottomOffset());
2287 toolbar_->CreateFadingControls(
2288 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2289
2290 std::list<Button*>::iterator iter;
2291 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2292 toolbar_->AddControl(*iter);
2293 }
2294 }
2295
2296 int Instance::GetToolbarRightOffset() {
2297 int scrollbar_thickness = GetScrollbarThickness();
2298 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2299 }
2300
2301 int Instance::GetToolbarBottomOffset() {
2302 int scrollbar_thickness = GetScrollbarThickness();
2303 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2304 }
2305
2306 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2307 std::vector<pp::ImageData> num_images(10);
2308 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2309 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2310 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2311 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2312 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2313 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2314 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2315 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2316 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2317 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2318 return num_images;
2319 }
2320
2321 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2322 pp::ImageData* background) {
2323 std::vector<pp::ImageData> result(9);
2324 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2325 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2326 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2327 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2328 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2329 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2330 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2331 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2332 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2333 *background = CreateResourceImage(
2334 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2335 return result;
2336 }
2337
2338 void Instance::CreatePageIndicator(bool always_visible) {
2339 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2340 number_image_generator(), always_visible);
2341 ConfigurePageIndicator();
2342 }
2343
2344 void Instance::ConfigurePageIndicator() {
2345 pp::ImageData background =
2346 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2347 page_indicator_.Configure(pp::Point(), background);
2348 }
2349
2350 void Instance::CreateProgressBar() {
2351 pp::ImageData background;
2352 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2353 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2354 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2355 device_scale_, images, background, text);
2356 }
2357
2358 void Instance::ConfigureProgressBar() {
2359 pp::ImageData background;
2360 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2361 progress_bar_.Reconfigure(background, images, device_scale_);
2362 }
2363
2364 void Instance::CreateThumbnails() {
2365 thumbnails_.CreateThumbnailControl(
2366 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2367 number_image_generator());
2368 }
2369
2370 void Instance::LoadUrl(const std::string& url) {
2371 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2372 }
2373
2374 void Instance::LoadPreviewUrl(const std::string& url) {
2375 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2376 }
2377
2378 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2379 void (Instance::* method)(int32_t)) {
2380 pp::URLRequestInfo request(this);
2381 request.SetURL(url);
2382 request.SetMethod("GET");
2383
2384 *loader = CreateURLLoaderInternal();
2385 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2386 int rv = loader->Open(request, callback);
2387 if (rv != PP_OK_COMPLETIONPENDING)
2388 callback.Run(rv);
2389 }
2390
2391 pp::URLLoader Instance::CreateURLLoaderInternal() {
2392 pp::URLLoader loader(this);
2393
2394 const PPB_URLLoaderTrusted* trusted_interface =
2395 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2396 pp::Module::Get()->GetBrowserInterface(
2397 PPB_URLLOADERTRUSTED_INTERFACE));
2398 if (trusted_interface)
2399 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2400 return loader;
2401 }
2402
2403 int Instance::GetInitialPage(const std::string& url) {
2404 size_t found_idx = url.find('#');
2405 if (found_idx == std::string::npos)
2406 return -1;
2407
2408 const std::string& ref = url.substr(found_idx + 1);
2409 std::vector<std::string> fragments;
2410 Tokenize(ref, kDelimiters, &fragments);
2411
2412 // Page number to return, zero-based.
2413 int page = -1;
2414
2415 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2416 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2417 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2418 return engine_->GetNamedDestinationPage(fragments[0]);
2419
2420 for (size_t i = 0; i < fragments.size(); ++i) {
2421 std::vector<std::string> key_value;
2422 base::SplitString(fragments[i], '=', &key_value);
2423 if (key_value.size() != 2)
2424 continue;
2425 const std::string& key = key_value[0];
2426 const std::string& value = key_value[1];
2427
2428 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2429 // |page_value| is 1-based.
2430 int page_value = -1;
2431 if (base::StringToInt(value, &page_value) && page_value > 0)
2432 page = page_value - 1;
2433 continue;
2434 }
2435 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2436 // |page_value| is 0-based.
2437 int page_value = engine_->GetNamedDestinationPage(value);
2438 if (page_value >= 0)
2439 page = page_value;
2440 continue;
2441 }
2442 }
2443 return page;
2444 }
2445
2446 void Instance::UpdateToolbarPosition(bool invalidate) {
2447 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2448 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2449 GetScaled(kToolbarFadingOffsetLeft);
2450 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2451 GetScaled(kToolbarFadingOffsetBottom);
2452
2453 // Update toolbar position
2454 if (plugin_size_.width() < min_toolbar_width ||
2455 plugin_size_.height() < min_toolbar_height) {
2456 // Disable toolbar if it does not fit on the screen.
2457 toolbar_->Show(false, invalidate);
2458 } else {
2459 pp::Point offset(
2460 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2461 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2462 toolbar_->MoveBy(offset, invalidate);
2463
2464 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2465 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2466 toolbar_->Show(painted_first_page_, invalidate);
2467 }
2468 }
2469
2470 void Instance::UpdateProgressBarPosition(bool invalidate) {
2471 // TODO(gene): verify we don't overlap with toolbar.
2472 int scrollbar_thickness = GetScrollbarThickness();
2473 pp::Point progress_origin(
2474 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2475 plugin_size_.height() - progress_bar_.rect().height() -
2476 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2477 progress_bar_.MoveTo(progress_origin, invalidate);
2478 }
2479
2480 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2481 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2482 pp::Point origin(
2483 plugin_size_.width() - page_indicator_.rect().width() -
2484 GetScaled(GetScrollbarReservedThickness()),
2485 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2486 doc_height, plugin_size_.height()));
2487 page_indicator_.MoveTo(origin, invalidate);
2488 }
2489
2490 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2491 double old_zoom = zoom_;
2492
2493 zoom_mode_ = zoom_mode;
2494 if (zoom_mode_ == ZOOM_SCALE)
2495 zoom_ = scale;
2496 UpdateZoomScale();
2497
2498 engine_->ZoomUpdated(zoom_ * device_scale_);
2499 OnGeometryChanged(old_zoom, device_scale_);
2500
2501 // If fit-to-height, snap to the beginning of the most visible page.
2502 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2503 ScrollToPage(engine_->GetMostVisiblePage());
2504 }
2505
2506 // Update sticky buttons to the current zoom style.
2507 Button* ftp_btn = static_cast<Button*>(
2508 toolbar_->GetControl(kFitToPageButtonId));
2509 Button* ftw_btn = static_cast<Button*>(
2510 toolbar_->GetControl(kFitToWidthButtonId));
2511 switch (zoom_mode_) {
2512 case ZOOM_FIT_TO_PAGE:
2513 ftp_btn->SetPressedState(true);
2514 ftw_btn->SetPressedState(false);
2515 break;
2516 case ZOOM_FIT_TO_WIDTH:
2517 ftw_btn->SetPressedState(true);
2518 ftp_btn->SetPressedState(false);
2519 break;
2520 default:
2521 ftw_btn->SetPressedState(false);
2522 ftp_btn->SetPressedState(false);
2523 }
2524 }
2525
2526 void Instance::UpdateZoomScale() {
2527 switch (zoom_mode_) {
2528 case ZOOM_SCALE:
2529 break; // Keep current scale.
2530 case ZOOM_FIT_TO_PAGE: {
2531 int page_num = engine_->GetFirstVisiblePage();
2532 if (page_num == -1)
2533 break;
2534 pp::Rect rc = engine_->GetPageRect(page_num);
2535 if (!rc.height())
2536 break;
2537 // Calculate fit to width zoom level.
2538 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2539 GetScrollbarReservedThickness()) / document_size_.width();
2540 // Calculate fit to height zoom level. If document will not fit
2541 // horizontally, adjust zoom level to allow space for horizontal
2542 // scrollbar.
2543 double fth_zoom =
2544 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2545 if (fth_zoom * document_size_.width() >
2546 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2547 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2548 - GetScrollbarReservedThickness()) / rc.height();
2549 zoom_ = std::min(ftw_zoom, fth_zoom);
2550 } break;
2551 case ZOOM_FIT_TO_WIDTH:
2552 case ZOOM_AUTO:
2553 if (!document_size_.width())
2554 break;
2555 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2556 GetScrollbarReservedThickness()) / document_size_.width();
2557 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2558 zoom_ = 1.0;
2559 break;
2560 }
2561 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2562 }
2563
2564 double Instance::CalculateZoom(uint32 control_id) const {
2565 if (control_id == kZoomInButtonId) {
2566 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2567 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2568 if (current_zoom - content::kEpsilon > zoom_)
2569 return current_zoom;
2570 }
2571 } else {
2572 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2573 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2574 if (current_zoom + content::kEpsilon < zoom_)
2575 return current_zoom;
2576 }
2577 }
2578 return zoom_;
2579 }
2580
2581 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2582 pp::ImageData resource_data;
2583 if (hidpi_enabled_) {
2584 resource_data =
2585 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2586 }
2587
2588 return resource_data.data() ? resource_data
2589 : pp::PDF::GetResourceImage(this, image_id);
2590 }
2591
2592 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2593 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2594 if (!rv.is_string())
2595 return std::string();
2596
2597 return rv.AsString();
2598 }
2599
2600 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2601 std::string str(GetLocalizedString(id));
2602
2603 pp::FontDescription_Dev description;
2604 description.set_family(PP_FONTFAMILY_SANSSERIF);
2605 description.set_size(kMessageTextSize * device_scale_);
2606 pp::Font_Dev font(this, description);
2607 int length = font.MeasureSimpleText(str);
2608 pp::Point point(top_center);
2609 point.set_x(point.x() - length / 2);
2610 DCHECK(!image_data_.is_null());
2611 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2612 }
2613
2614 void Instance::SetPrintPreviewMode(int page_count) {
2615 if (!IsPrintPreview() || page_count <= 0) {
2616 print_preview_page_count_ = 0;
2617 return;
2618 }
2619
2620 print_preview_page_count_ = page_count;
2621 ScrollToPage(0);
2622 engine_->AppendBlankPages(print_preview_page_count_);
2623 if (preview_pages_info_.size() > 0)
2624 LoadAvailablePreviewPage();
2625 }
2626
2627 bool Instance::IsPrintPreview() {
2628 return IsPrintPreviewUrl(url_);
2629 }
2630
2631 int Instance::GetPageNumberToDisplay() {
2632 int page = engine_->GetMostVisiblePage();
2633 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2634 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2635 return print_preview_page_numbers_[page];
2636 }
2637 return page + 1;
2638 }
2639
2640 void Instance::ProcessPreviewPageInfo(const std::string& url,
2641 int dst_page_index) {
2642 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2643 return;
2644
2645 int src_page_index = ExtractPrintPreviewPageIndex(url);
2646 if (src_page_index < 1)
2647 return;
2648
2649 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2650 LoadAvailablePreviewPage();
2651 }
2652
2653 void Instance::LoadAvailablePreviewPage() {
2654 if (preview_pages_info_.size() <= 0)
2655 return;
2656
2657 std::string url = preview_pages_info_.front().first;
2658 int dst_page_index = preview_pages_info_.front().second;
2659 int src_page_index = ExtractPrintPreviewPageIndex(url);
2660 if (src_page_index < 1 ||
2661 dst_page_index >= print_preview_page_count_ ||
2662 preview_document_load_state_ == LOAD_STATE_LOADING) {
2663 return;
2664 }
2665
2666 preview_document_load_state_ = LOAD_STATE_LOADING;
2667 LoadPreviewUrl(url);
2668 }
2669
2670 void Instance::EnableAutoscroll(const pp::Point& origin) {
2671 if (is_autoscroll_)
2672 return;
2673
2674 pp::Size client_size = plugin_size_;
2675 if (v_scrollbar_.get())
2676 client_size.Enlarge(-GetScrollbarThickness(), 0);
2677 if (h_scrollbar_.get())
2678 client_size.Enlarge(0, -GetScrollbarThickness());
2679
2680 // Do not allow autoscroll if client area is too small.
2681 if (autoscroll_anchor_.size().width() > client_size.width() ||
2682 autoscroll_anchor_.size().height() > client_size.height())
2683 return;
2684
2685 autoscroll_rect_ = pp::Rect(
2686 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2687 origin.y() - autoscroll_anchor_.size().height() / 2),
2688 autoscroll_anchor_.size());
2689
2690 // Make sure autoscroll anchor is in the client area.
2691 if (autoscroll_rect_.right() > client_size.width()) {
2692 autoscroll_rect_.set_x(
2693 client_size.width() - autoscroll_anchor_.size().width());
2694 }
2695 if (autoscroll_rect_.bottom() > client_size.height()) {
2696 autoscroll_rect_.set_y(
2697 client_size.height() - autoscroll_anchor_.size().height());
2698 }
2699
2700 if (autoscroll_rect_.x() < 0)
2701 autoscroll_rect_.set_x(0);
2702 if (autoscroll_rect_.y() < 0)
2703 autoscroll_rect_.set_y(0);
2704
2705 is_autoscroll_ = true;
2706 Invalidate(kAutoScrollId, autoscroll_rect_);
2707
2708 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2709 }
2710
2711 void Instance::DisableAutoscroll() {
2712 if (is_autoscroll_) {
2713 is_autoscroll_ = false;
2714 Invalidate(kAutoScrollId, autoscroll_rect_);
2715 }
2716 }
2717
2718 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2719 // Scroll only if mouse pointer is outside of the anchor area.
2720 if (autoscroll_rect_.Contains(mouse_pos)) {
2721 autoscroll_x_ = 0;
2722 autoscroll_y_ = 0;
2723 return PP_CURSORTYPE_MIDDLEPANNING;
2724 }
2725
2726 // Relative position to the center of anchor area.
2727 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2728
2729 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2730 double angle = atan2(static_cast<double>(rel_pos.y()),
2731 static_cast<double>(rel_pos.x()));
2732
2733 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2734 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2735
2736 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2737 // so negative angle represent north direction.
2738 if (angle < - (M_PI * 7.0 / 8.0)) {
2739 // going west
2740 return PP_CURSORTYPE_WESTPANNING;
2741 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2742 // going north-west
2743 return PP_CURSORTYPE_NORTHWESTPANNING;
2744 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2745 // going north.
2746 return PP_CURSORTYPE_NORTHPANNING;
2747 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2748 // going north-east
2749 return PP_CURSORTYPE_NORTHEASTPANNING;
2750 } else if (angle < M_PI * 1.0 / 8.0) {
2751 // going east.
2752 return PP_CURSORTYPE_EASTPANNING;
2753 } else if (angle < M_PI * 3.0 / 8.0) {
2754 // going south-east
2755 return PP_CURSORTYPE_SOUTHEASTPANNING;
2756 } else if (angle < M_PI * 5.0 / 8.0) {
2757 // going south.
2758 return PP_CURSORTYPE_SOUTHPANNING;
2759 } else if (angle < M_PI * 7.0 / 8.0) {
2760 // going south-west
2761 return PP_CURSORTYPE_SOUTHWESTPANNING;
2762 }
2763
2764 // went around the circle, going west again
2765 return PP_CURSORTYPE_WESTPANNING;
2766 }
2767
2768 void Instance::ConfigureNumberImageGenerator() {
2769 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2770 pp::ImageData number_background = CreateResourceImage(
2771 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2772 number_image_generator_->Configure(number_background,
2773 num_images,
2774 device_scale_);
2775 }
2776
2777 NumberImageGenerator* Instance::number_image_generator() {
2778 if (!number_image_generator_.get()) {
2779 number_image_generator_.reset(new NumberImageGenerator(this));
2780 ConfigureNumberImageGenerator();
2781 }
2782 return number_image_generator_.get();
2783 }
2784
2785 int Instance::GetScaled(int x) const {
2786 return static_cast<int>(x * device_scale_);
2787 }
2788
2789 void Instance::UserMetricsRecordAction(const std::string& action) {
2790 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2791 }
2792
2793 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2794 : instance_(instance) {
2795 }
2796
2797 PDFScriptableObject::~PDFScriptableObject() {
2798 }
2799
2800 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2801 return instance_->HasScriptableMethod(name, exception);
2802 }
2803
2804 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2805 const std::vector<pp::Var>& args,
2806 pp::Var* exception) {
2807 return instance_->CallScriptableMethod(method, args, exception);
2808 }
2809
2810 } // namespace chrome_pdf