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Revert of Enabling audio quality test on mac. (patchset #1 id:1 of https://codereview...
[chromium-blink-merge.git] / pdf / instance.cc
bloba71d071ba9cb7fc5e1a104c0424251770dd8cdce
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
45 #if defined(OS_MACOSX)
46 #include "base/mac/mac_util.h"
47 #endif
48
49 namespace chrome_pdf {
50
51 struct ToolbarButtonInfo {
52 uint32 id;
53 Button::ButtonStyle style;
54 PP_ResourceImage normal;
55 PP_ResourceImage highlighted;
56 PP_ResourceImage pressed;
57 };
58
59 namespace {
60
61 // Uncomment following #define to enable thumbnails.
62 // #define ENABLE_THUMBNAILS
63
64 const uint32 kToolbarSplashTimeoutMs = 6000;
65 const uint32 kMessageTextColor = 0xFF575757;
66 const uint32 kMessageTextSize = 22;
67 const uint32 kProgressFadeTimeoutMs = 250;
68 const uint32 kProgressDelayTimeoutMs = 1000;
69 const uint32 kAutoScrollTimeoutMs = 50;
70 const double kAutoScrollFactor = 0.2;
71
72 // Javascript methods.
73 const char kJSAccessibility[] = "accessibility";
74 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
75 const char kJSGetHeight[] = "getHeight";
76 const char kJSGetHorizontalScrollbarThickness[] =
77 "getHorizontalScrollbarThickness";
78 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
79 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
80 const char kJSGetWidth[] = "getWidth";
81 const char kJSGetZoomLevel[] = "getZoomLevel";
82 const char kJSGoToPage[] = "goToPage";
83 const char kJSGrayscale[] = "grayscale";
84 const char kJSLoadPreviewPage[] = "loadPreviewPage";
85 const char kJSOnLoad[] = "onload";
86 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
87 const char kJSOnScroll[] = "onScroll";
88 const char kJSPageXOffset[] = "pageXOffset";
89 const char kJSPageYOffset[] = "pageYOffset";
90 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
91 const char kJSReload[] = "reload";
92 const char kJSRemovePrintButton[] = "removePrintButton";
93 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
94 const char kJSSendKeyEvent[] = "sendKeyEvent";
95 const char kJSSetPageNumbers[] = "setPageNumbers";
96 const char kJSSetPageXOffset[] = "setPageXOffset";
97 const char kJSSetPageYOffset[] = "setPageYOffset";
98 const char kJSSetZoomLevel[] = "setZoomLevel";
99 const char kJSZoomFitToHeight[] = "fitToHeight";
100 const char kJSZoomFitToWidth[] = "fitToWidth";
101 const char kJSZoomIn[] = "zoomIn";
102 const char kJSZoomOut[] = "zoomOut";
103
104 // URL reference parameters.
105 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
106 // document from Adobe.
107 const char kDelimiters[] = "#&";
108 const char kNamedDest[] = "nameddest";
109 const char kPage[] = "page";
110
111 const char kChromePrint[] = "chrome://print/";
112
113 // Dictionary Value key names for the document accessibility info
114 const char kAccessibleNumberOfPages[] = "numberOfPages";
115 const char kAccessibleLoaded[] = "loaded";
116 const char kAccessibleCopyable[] = "copyable";
117
118 const ToolbarButtonInfo kPDFToolbarButtons[] = {
119 { kFitToPageButtonId, Button::BUTTON_STATE,
120 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
123 { kFitToWidthButtonId, Button::BUTTON_STATE,
124 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
127 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
128 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
131 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
132 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
135 { kSaveButtonId, Button::BUTTON_CLICKABLE,
136 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
139 { kPrintButtonId, Button::BUTTON_CLICKABLE,
140 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
143 };
144
145 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
146 { kFitToPageButtonId, Button::BUTTON_STATE,
147 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
150 { kFitToWidthButtonId, Button::BUTTON_STATE,
151 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
154 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
155 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
158 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
159 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
162 { kSaveButtonId, Button::BUTTON_CLICKABLE,
163 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
166 { kPrintButtonId, Button::BUTTON_CLICKABLE,
167 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
170 };
171
172 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
173 { kFitToPageButtonId, Button::BUTTON_STATE,
174 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
177 { kFitToWidthButtonId, Button::BUTTON_STATE,
178 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
181 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
182 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
185 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
186 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
189 };
190
191 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
192
193 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
194 pp::Var var;
195 void* object =
196 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
197 if (object)
198 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
199 return var.Detach();
200 }
201
202 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
203 void* object =
204 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
205 if (object) {
206 Instance* obj_instance = static_cast<Instance*>(object);
207 switch (type) {
208 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
209 obj_instance->RotateClockwise();
210 break;
211 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
212 obj_instance->RotateCounterclockwise();
213 break;
214 }
215 }
216 }
217
218 const PPP_Pdf ppp_private = {
219 &GetLinkAtPosition,
220 &Transform
221 };
222
223 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
224 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
225 std::vector<std::string> url_substr;
226 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
227 if (url_substr.size() != 3)
228 return -1;
229
230 if (url_substr[2] != "print.pdf")
231 return -1;
232
233 int page_index = 0;
234 if (!base::StringToInt(url_substr[1], &page_index))
235 return -1;
236 return page_index;
237 }
238
239 bool IsPrintPreviewUrl(const std::string& url) {
240 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
241 }
242
243 void ScalePoint(float scale, pp::Point* point) {
244 point->set_x(static_cast<int>(point->x() * scale));
245 point->set_y(static_cast<int>(point->y() * scale));
246 }
247
248 void ScaleRect(float scale, pp::Rect* rect) {
249 int left = static_cast<int>(floorf(rect->x() * scale));
250 int top = static_cast<int>(floorf(rect->y() * scale));
251 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
252 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
253 rect->SetRect(left, top, right - left, bottom - top);
254 }
255
256 template<class T>
257 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
258 DCHECK(lower_boundary <= upper_boundary);
259 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
260 }
261
262 } // namespace
263
264 Instance::Instance(PP_Instance instance)
265 : pp::InstancePrivate(instance),
266 pp::Find_Private(this),
267 pp::Printing_Dev(this),
268 pp::Selection_Dev(this),
269 pp::WidgetClient_Dev(this),
270 pp::Zoom_Dev(this),
271 cursor_(PP_CURSORTYPE_POINTER),
272 timer_pending_(false),
273 current_timer_id_(0),
274 zoom_(1.0),
275 device_scale_(1.0),
276 printing_enabled_(true),
277 hidpi_enabled_(false),
278 full_(IsFullFrame()),
279 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
280 did_call_start_loading_(false),
281 is_autoscroll_(false),
282 scrollbar_thickness_(-1),
283 scrollbar_reserved_thickness_(-1),
284 current_tb_info_(NULL),
285 current_tb_info_size_(0),
286 paint_manager_(this, this, true),
287 delayed_progress_timer_id_(0),
288 first_paint_(true),
289 painted_first_page_(false),
290 show_page_indicator_(false),
291 document_load_state_(LOAD_STATE_LOADING),
292 preview_document_load_state_(LOAD_STATE_COMPLETE),
293 told_browser_about_unsupported_feature_(false),
294 print_preview_page_count_(0) {
295 loader_factory_.Initialize(this);
296 timer_factory_.Initialize(this);
297 form_factory_.Initialize(this);
298 callback_factory_.Initialize(this);
299 engine_.reset(PDFEngine::Create(this));
300 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
301 AddPerInstanceObject(kPPPPdfInterface, this);
302
303 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
304 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
305 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
306 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
307 }
308
309 Instance::~Instance() {
310 if (timer_pending_) {
311 timer_factory_.CancelAll();
312 timer_pending_ = false;
313 }
314 // The engine may try to access this instance during its destruction.
315 // Make sure this happens early while the instance is still intact.
316 engine_.reset();
317 RemovePerInstanceObject(kPPPPdfInterface, this);
318 }
319
320 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
321 // For now, we hide HiDPI support behind a flag.
322 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
323 hidpi_enabled_ = true;
324
325 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
326 if (printing_enabled_) {
327 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
328 } else {
329 CreateToolbar(kPDFNoPrintToolbarButtons,
330 arraysize(kPDFNoPrintToolbarButtons));
331 }
332
333 CreateProgressBar();
334
335 // Load autoscroll anchor image.
336 autoscroll_anchor_ =
337 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
338
339 #ifdef ENABLE_THUMBNAILS
340 CreateThumbnails();
341 #endif
342 const char* url = NULL;
343 for (uint32_t i = 0; i < argc; ++i) {
344 if (strcmp(argn[i], "src") == 0) {
345 url = argv[i];
346 break;
347 }
348 }
349
350 if (!url)
351 return false;
352
353 CreatePageIndicator(IsPrintPreviewUrl(url));
354
355 if (!full_) {
356 // For PDFs embedded in a frame, we don't get the data automatically like we
357 // do for full-frame loads. Start loading the data manually.
358 LoadUrl(url);
359 } else {
360 DCHECK(!did_call_start_loading_);
361 pp::PDF::DidStartLoading(this);
362 did_call_start_loading_ = true;
363 }
364
365 ZoomLimitsChanged(kMinZoom, kMaxZoom);
366
367 text_input_.reset(new pp::TextInput_Dev(this));
368
369 url_ = url;
370 return engine_->New(url);
371 }
372
373 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
374 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
375 kProgressDelayTimeoutMs);
376 return engine_->HandleDocumentLoad(loader);
377 }
378
379 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
380 // To simplify things, convert the event into device coordinates if it is
381 // a mouse event.
382 pp::InputEvent event_device_res(event);
383 {
384 pp::MouseInputEvent mouse_event(event);
385 if (!mouse_event.is_null()) {
386 pp::Point point = mouse_event.GetPosition();
387 pp::Point movement = mouse_event.GetMovement();
388 ScalePoint(device_scale_, &point);
389 ScalePoint(device_scale_, &movement);
390 mouse_event = pp::MouseInputEvent(
391 this,
392 event.GetType(),
393 event.GetTimeStamp(),
394 event.GetModifiers(),
395 mouse_event.GetButton(),
396 point,
397 mouse_event.GetClickCount(),
398 movement);
399 event_device_res = mouse_event;
400 }
401 }
402
403 // Check if we need to go to autoscroll mode.
404 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
405 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
406 pp::MouseInputEvent mouse_event(event_device_res);
407 pp::Point pos = mouse_event.GetPosition();
408 EnableAutoscroll(pos);
409 UpdateCursor(CalculateAutoscroll(pos));
410 return true;
411 } else {
412 // Quit autoscrolling on any other event.
413 DisableAutoscroll();
414 }
415
416 #ifdef ENABLE_THUMBNAILS
417 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
418 thumbnails_.SlideOut();
419
420 if (thumbnails_.HandleEvent(event_device_res))
421 return true;
422 #endif
423
424 if (toolbar_->HandleEvent(event_device_res))
425 return true;
426
427 #ifdef ENABLE_THUMBNAILS
428 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
429 pp::MouseInputEvent mouse_event(event);
430 pp::Point pt = mouse_event.GetPosition();
431 pp::Rect v_scrollbar_rc;
432 v_scrollbar_->GetLocation(&v_scrollbar_rc);
433 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
434 // in the webkit that makes event.u.mouse.button
435 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
436 // To work around this issue we use modifier for now, and will switch
437 // to button once the bug is fixed and webkit got merged back to our tree.
438 if (v_scrollbar_rc.Contains(pt) &&
439 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
440 thumbnails_.SlideIn();
441 }
442
443 // When scrollbar is in the scrolling mode we should display thumbnails
444 // even the mouse is outside the thumbnail and scrollbar areas.
445 // If mouse is outside plugin area, we are still getting mouse move events
446 // while scrolling. See bug description for details:
447 // http://code.google.com/p/chromium/issues/detail?id=56444
448 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
449 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
450 !thumbnails_.rect().Contains(pt)) {
451 thumbnails_.SlideOut();
452 }
453 }
454 #endif
455
456 // Need to pass the event to the engine first, since if we're over an edit
457 // control we want it to get keyboard events (like space) instead of the
458 // scrollbar.
459 // TODO: will have to offset the mouse coordinates once we support bidi and
460 // there could be scrollbars on the left.
461 pp::InputEvent offset_event(event_device_res);
462 bool try_engine_first = true;
463 switch (offset_event.GetType()) {
464 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
465 case PP_INPUTEVENT_TYPE_MOUSEUP:
466 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
467 case PP_INPUTEVENT_TYPE_MOUSEENTER:
468 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
469 pp::MouseInputEvent mouse_event(event_device_res);
470 pp::MouseInputEvent mouse_event_dip(event);
471 pp::Point point = mouse_event.GetPosition();
472 point.set_x(point.x() - available_area_.x());
473 offset_event = pp::MouseInputEvent(
474 this,
475 event.GetType(),
476 event.GetTimeStamp(),
477 event.GetModifiers(),
478 mouse_event.GetButton(),
479 point,
480 mouse_event.GetClickCount(),
481 mouse_event.GetMovement());
482 if (!engine_->IsSelecting()) {
483 if (!IsOverlayScrollbar() &&
484 !available_area_.Contains(mouse_event.GetPosition())) {
485 try_engine_first = false;
486 } else if (IsOverlayScrollbar()) {
487 pp::Rect temp;
488 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
489 temp.Contains(mouse_event_dip.GetPosition())) ||
490 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
491 temp.Contains(mouse_event_dip.GetPosition()))) {
492 try_engine_first = false;
493 }
494 }
495 }
496 break;
497 }
498 default:
499 break;
500 }
501 if (try_engine_first && engine_->HandleEvent(offset_event))
502 return true;
503
504 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
505 // there is no horizontal scroll bar.
506 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
507 // Prev/Next page. Spacebar / shift+spacebar should do the same.
508 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
509 pp::KeyboardInputEvent keyboard_event(event);
510 bool no_h_scrollbar = !h_scrollbar_.get();
511 uint32_t key_code = keyboard_event.GetKeyCode();
512 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
513 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
514 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
515 bool has_shift =
516 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
517 bool key_is_space = key_code == ui::VKEY_SPACE;
518 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
519 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
520 }
521 if (page_down) {
522 int page = engine_->GetFirstVisiblePage();
523 if (page == -1)
524 return true;
525 // Engine calculates visible page including delimiter to the page size.
526 // We need to check here if the page itself is completely out of view and
527 // scroll to the next one in that case.
528 if (engine_->GetPageRect(page).bottom() * zoom_ <=
529 v_scrollbar_->GetValue())
530 page++;
531 ScrollToPage(page + 1);
532 UpdateCursor(PP_CURSORTYPE_POINTER);
533 return true;
534 } else if (page_up) {
535 int page = engine_->GetFirstVisiblePage();
536 if (page == -1)
537 return true;
538 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
539 page--;
540 ScrollToPage(page);
541 UpdateCursor(PP_CURSORTYPE_POINTER);
542 return true;
543 }
544 }
545
546 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
547 UpdateCursor(PP_CURSORTYPE_POINTER);
548 return true;
549 }
550
551 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
552 UpdateCursor(PP_CURSORTYPE_POINTER);
553 return true;
554 }
555
556 if (timer_pending_ &&
557 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
558 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
559 timer_factory_.CancelAll();
560 timer_pending_ = false;
561 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
562 engine_->IsSelecting()) {
563 bool set_timer = false;
564 pp::MouseInputEvent mouse_event(event);
565 if (v_scrollbar_.get() &&
566 (mouse_event.GetPosition().y() <= 0 ||
567 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
568 v_scrollbar_->ScrollBy(
569 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
570 set_timer = true;
571 }
572 if (h_scrollbar_.get() &&
573 (mouse_event.GetPosition().x() <= 0 ||
574 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
575 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
576 mouse_event.GetPosition().x() >= 0 ? 1: -1);
577 set_timer = true;
578 }
579
580 if (set_timer) {
581 last_mouse_event_ = pp::MouseInputEvent(event);
582
583 pp::CompletionCallback callback =
584 timer_factory_.NewCallback(&Instance::OnTimerFired);
585 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
586 timer_pending_ = true;
587 }
588 }
589
590 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
591 pp::KeyboardInputEvent keyboard_event(event);
592 const uint32 modifier = event.GetModifiers();
593 if (modifier & kDefaultKeyModifier) {
594 switch (keyboard_event.GetKeyCode()) {
595 case 'A':
596 engine_->SelectAll();
597 return true;
598 }
599 } else if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
600 switch (keyboard_event.GetKeyCode()) {
601 case ui::VKEY_OEM_4:
602 // Left bracket.
603 engine_->RotateCounterclockwise();
604 return true;
605 case ui::VKEY_OEM_6:
606 // Right bracket.
607 engine_->RotateClockwise();
608 return true;
609 }
610 }
611 }
612
613 // Return true for unhandled clicks so the plugin takes focus.
614 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
615 }
616
617 void Instance::DidChangeView(const pp::View& view) {
618 pp::Rect view_rect(view.GetRect());
619 float device_scale = 1.0f;
620 float old_device_scale = device_scale_;
621 if (hidpi_enabled_)
622 device_scale = view.GetDeviceScale();
623 pp::Size view_device_size(view_rect.width() * device_scale,
624 view_rect.height() * device_scale);
625 if (view_device_size == plugin_size_ && device_scale == device_scale_)
626 return; // We don't care about the position, only the size.
627
628 image_data_ = pp::ImageData();
629 device_scale_ = device_scale;
630 plugin_dip_size_ = view_rect.size();
631 plugin_size_ = view_device_size;
632
633 paint_manager_.SetSize(view_device_size, device_scale_);
634
635 image_data_ = pp::ImageData(this,
636 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
637 plugin_size_,
638 false);
639 if (image_data_.is_null()) {
640 DCHECK(plugin_size_.IsEmpty());
641 return;
642 }
643
644 // View dimensions changed, disable autoscroll (if it was enabled).
645 DisableAutoscroll();
646
647 OnGeometryChanged(zoom_, old_device_scale);
648 }
649
650 pp::Var Instance::GetInstanceObject() {
651 if (instance_object_.is_undefined()) {
652 PDFScriptableObject* object = new PDFScriptableObject(this);
653 // The pp::Var takes ownership of object here.
654 instance_object_ = pp::VarPrivate(this, object);
655 }
656
657 return instance_object_;
658 }
659
660 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
661 pp::Point offset_point(point);
662 ScalePoint(device_scale_, &offset_point);
663 offset_point.set_x(offset_point.x() - available_area_.x());
664 return engine_->GetLinkAtPosition(offset_point);
665 }
666
667 pp::Var Instance::GetSelectedText(bool html) {
668 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
669 return pp::Var();
670 return engine_->GetSelectedText();
671 }
672
673 void Instance::InvalidateWidget(pp::Widget_Dev widget,
674 const pp::Rect& dirty_rect) {
675 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
676 if (!image_data_.is_null())
677 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
678 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
679 if (!image_data_.is_null())
680 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
681 } else {
682 // Possible to hit this condition since sometimes the scrollbar codes posts
683 // a task to do something later, and we could have deleted our reference in
684 // the meantime.
685 return;
686 }
687
688 pp::Rect dirty_rect_scaled = dirty_rect;
689 ScaleRect(device_scale_, &dirty_rect_scaled);
690 paint_manager_.InvalidateRect(dirty_rect_scaled);
691 }
692
693 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
694 uint32_t value) {
695 value = GetScaled(value);
696 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
697 engine_->ScrolledToYPosition(value);
698 pp::Rect rc;
699 v_scrollbar_->GetLocation(&rc);
700 int32 doc_height = GetDocumentPixelHeight();
701 doc_height -= GetScaled(rc.height());
702 #ifdef ENABLE_THUMBNAILS
703 if (thumbnails_.visible()) {
704 thumbnails_.SetPosition(value, doc_height, true);
705 }
706 #endif
707 pp::Point origin(
708 plugin_size_.width() - page_indicator_.rect().width() -
709 GetScaled(GetScrollbarReservedThickness()),
710 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
711 page_indicator_.MoveTo(origin, page_indicator_.visible());
712 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
713 engine_->ScrolledToXPosition(value);
714 }
715 }
716
717 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
718 bool overlay) {
719 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
720 OnGeometryChanged(zoom_, device_scale_);
721 }
722
723 uint32_t Instance::QuerySupportedPrintOutputFormats() {
724 return engine_->QuerySupportedPrintOutputFormats();
725 }
726
727 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
728 // For us num_pages is always equal to the number of pages in the PDF
729 // document irrespective of the printable area.
730 int32_t ret = engine_->GetNumberOfPages();
731 if (!ret)
732 return 0;
733
734 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
735 if ((print_settings.format & supported_formats) == 0)
736 return 0;
737
738 print_settings_.is_printing = true;
739 print_settings_.pepper_print_settings = print_settings;
740 engine_->PrintBegin();
741 return ret;
742 }
743
744 pp::Resource Instance::PrintPages(
745 const PP_PrintPageNumberRange_Dev* page_ranges,
746 uint32_t page_range_count) {
747 if (!print_settings_.is_printing)
748 return pp::Resource();
749
750 print_settings_.print_pages_called_ = true;
751 return engine_->PrintPages(page_ranges, page_range_count,
752 print_settings_.pepper_print_settings);
753 }
754
755 void Instance::PrintEnd() {
756 if (print_settings_.print_pages_called_)
757 UserMetricsRecordAction("PDF.PrintPage");
758 print_settings_.Clear();
759 engine_->PrintEnd();
760 }
761
762 bool Instance::IsPrintScalingDisabled() {
763 return !engine_->GetPrintScaling();
764 }
765
766 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
767 engine_->StartFind(text.c_str(), case_sensitive);
768 return true;
769 }
770
771 void Instance::SelectFindResult(bool forward) {
772 engine_->SelectFindResult(forward);
773 }
774
775 void Instance::StopFind() {
776 engine_->StopFind();
777 }
778
779 void Instance::Zoom(double scale, bool text_only) {
780 UserMetricsRecordAction("PDF.ZoomFromBrowser");
781 SetZoom(ZOOM_SCALE, scale);
782 }
783
784 void Instance::ZoomChanged(double factor) {
785 if (full_)
786 Zoom_Dev::ZoomChanged(factor);
787 }
788
789 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
790 std::vector<PaintManager::ReadyRect>* ready,
791 std::vector<pp::Rect>* pending) {
792 if (image_data_.is_null()) {
793 DCHECK(plugin_size_.IsEmpty());
794 return;
795 }
796 if (first_paint_) {
797 first_paint_ = false;
798 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
799 FillRect(rect, kBackgroundColor);
800 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
801 *pending = paint_rects;
802 return;
803 }
804
805 engine_->PrePaint();
806
807 for (size_t i = 0; i < paint_rects.size(); i++) {
808 // Intersect with plugin area since there could be pending invalidates from
809 // when the plugin area was larger.
810 pp::Rect rect =
811 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
812 if (rect.IsEmpty())
813 continue;
814
815 pp::Rect pdf_rect = available_area_.Intersect(rect);
816 if (!pdf_rect.IsEmpty()) {
817 pdf_rect.Offset(available_area_.x() * -1, 0);
818
819 std::vector<pp::Rect> pdf_ready;
820 std::vector<pp::Rect> pdf_pending;
821 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
822 for (size_t j = 0; j < pdf_ready.size(); ++j) {
823 pdf_ready[j].Offset(available_area_.point());
824 ready->push_back(
825 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
826 }
827 for (size_t j = 0; j < pdf_pending.size(); ++j) {
828 pdf_pending[j].Offset(available_area_.point());
829 pending->push_back(pdf_pending[j]);
830 }
831 }
832
833 for (size_t j = 0; j < background_parts_.size(); ++j) {
834 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
835 if (!intersection.IsEmpty()) {
836 FillRect(intersection, background_parts_[j].color);
837 ready->push_back(
838 PaintManager::ReadyRect(intersection, image_data_, false));
839 }
840 }
841
842 if (document_load_state_ == LOAD_STATE_FAILED) {
843 pp::Point top_center;
844 top_center.set_x(plugin_size_.width() / 2);
845 top_center.set_y(plugin_size_.height() / 2);
846 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
847 }
848
849 #ifdef ENABLE_THUMBNAILS
850 thumbnails_.Paint(&image_data_, rect);
851 #endif
852 }
853
854 engine_->PostPaint();
855
856 // Must paint scrollbars after the background parts, in case we have an
857 // overlay scrollbar that's over the background. We also do this in a separate
858 // loop because the scrollbar painting logic uses the signal of whether there
859 // are pending paints or not to figure out if it should draw right away or
860 // not.
861 for (size_t i = 0; i < paint_rects.size(); i++) {
862 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
863 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
864 }
865
866 if (progress_bar_.visible())
867 PaintOverlayControl(&progress_bar_, &image_data_, ready);
868
869 if (page_indicator_.visible())
870 PaintOverlayControl(&page_indicator_, &image_data_, ready);
871
872 if (toolbar_->current_transparency() != kTransparentAlpha)
873 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
874
875 // Paint autoscroll anchor if needed.
876 if (is_autoscroll_) {
877 size_t limit = ready->size();
878 for (size_t i = 0; i < limit; i++) {
879 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
880 if (!anchor_rect.IsEmpty()) {
881 pp::Rect draw_rc = pp::Rect(
882 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
883 anchor_rect.y() - autoscroll_rect_.y()),
884 anchor_rect.size());
885 // Paint autoscroll anchor.
886 AlphaBlend(autoscroll_anchor_, draw_rc,
887 &image_data_, anchor_rect.point(), kOpaqueAlpha);
888 }
889 }
890 }
891 }
892
893 void Instance::PaintOverlayControl(
894 Control* ctrl,
895 pp::ImageData* image_data,
896 std::vector<PaintManager::ReadyRect>* ready) {
897 // Make sure that we only paint overlay controls over an area that's ready,
898 // i.e. not pending. Otherwise we'll mark the control rect as ready and
899 // it'll overwrite the pdf region.
900 std::list<pp::Rect> ctrl_rects;
901 for (size_t i = 0; i < ready->size(); i++) {
902 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
903 if (!rc.IsEmpty())
904 ctrl_rects.push_back(rc);
905 }
906
907 if (!ctrl_rects.empty()) {
908 ctrl->PaintMultipleRects(image_data, ctrl_rects);
909
910 std::list<pp::Rect>::iterator iter;
911 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
912 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
913 }
914 }
915 }
916
917 void Instance::DidOpen(int32_t result) {
918 if (result == PP_OK) {
919 engine_->HandleDocumentLoad(embed_loader_);
920 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
921 NOTREACHED();
922 }
923 }
924
925 void Instance::DidOpenPreview(int32_t result) {
926 if (result == PP_OK) {
927 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
928 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
929 } else {
930 NOTREACHED();
931 }
932 }
933
934 void Instance::PaintIfWidgetIntersects(
935 pp::Widget_Dev* widget,
936 const pp::Rect& rect,
937 std::vector<PaintManager::ReadyRect>* ready,
938 std::vector<pp::Rect>* pending) {
939 if (!widget)
940 return;
941
942 pp::Rect location;
943 if (!widget->GetLocation(&location))
944 return;
945
946 ScaleRect(device_scale_, &location);
947 location = location.Intersect(rect);
948 if (location.IsEmpty())
949 return;
950
951 if (IsOverlayScrollbar()) {
952 // If we're using overlay scrollbars, and there are pending paints under the
953 // scrollbar, don't update the scrollbar instantly. While it would be nice,
954 // we would need to double buffer the plugin area in order to make this
955 // work. This is because we'd need to always have a copy of what the pdf
956 // under the scrollbar looks like, and additionally we couldn't paint the
957 // pdf under the scrollbar if it's ready until we got the preceding flush.
958 // So in practice, it would make painting slower and introduce extra buffer
959 // copies for the general case.
960 for (size_t i = 0; i < pending->size(); ++i) {
961 if ((*pending)[i].Intersects(location))
962 return;
963 }
964
965 // Even if none of the pending paints are under the scrollbar, we never want
966 // to paint it if it's over the pdf if there are other pending paints.
967 // Otherwise different parts of the pdf plugin would display at different
968 // scroll offsets.
969 if (!pending->empty() && available_area_.Intersects(rect)) {
970 pending->push_back(location);
971 return;
972 }
973 }
974
975 pp::Rect location_dip = location;
976 ScaleRect(1.0f / device_scale_, &location_dip);
977
978 DCHECK(!image_data_.is_null());
979 widget->Paint(location_dip, &image_data_);
980
981 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
982 }
983
984 void Instance::OnTimerFired(int32_t) {
985 HandleInputEvent(last_mouse_event_);
986 }
987
988 void Instance::OnClientTimerFired(int32_t id) {
989 engine_->OnCallback(id);
990 }
991
992 void Instance::OnControlTimerFired(int32_t,
993 const uint32& control_id,
994 const uint32& timer_id) {
995 if (control_id == toolbar_->id()) {
996 toolbar_->OnTimerFired(timer_id);
997 } else if (control_id == progress_bar_.id()) {
998 if (timer_id == delayed_progress_timer_id_) {
999 if (document_load_state_ == LOAD_STATE_LOADING &&
1000 !progress_bar_.visible()) {
1001 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1002 }
1003 delayed_progress_timer_id_ = 0;
1004 } else {
1005 progress_bar_.OnTimerFired(timer_id);
1006 }
1007 } else if (control_id == kAutoScrollId) {
1008 if (is_autoscroll_) {
1009 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1010 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1011 }
1012 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1013 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1014 }
1015
1016 // Reschedule timer.
1017 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1018 }
1019 } else if (control_id == kPageIndicatorId) {
1020 page_indicator_.OnTimerFired(timer_id);
1021 }
1022 #ifdef ENABLE_THUMBNAILS
1023 else if (control_id == thumbnails_.id()) {
1024 thumbnails_.OnTimerFired(timer_id);
1025 }
1026 #endif
1027 }
1028
1029 void Instance::CalculateBackgroundParts() {
1030 background_parts_.clear();
1031 int v_scrollbar_thickness =
1032 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1033 int h_scrollbar_thickness =
1034 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1035 int width_without_scrollbar = std::max(
1036 plugin_size_.width() - v_scrollbar_thickness, 0);
1037 int height_without_scrollbar = std::max(
1038 plugin_size_.height() - h_scrollbar_thickness, 0);
1039 int left_width = available_area_.x();
1040 int right_start = available_area_.right();
1041 int right_width = abs(width_without_scrollbar - available_area_.right());
1042 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1043
1044 // Add the left, right, and bottom rectangles. Note: we assume only
1045 // horizontal centering.
1046 BackgroundPart part = {
1047 pp::Rect(0, 0, left_width, bottom),
1048 kBackgroundColor
1049 };
1050 if (!part.location.IsEmpty())
1051 background_parts_.push_back(part);
1052 part.location = pp::Rect(right_start, 0, right_width, bottom);
1053 if (!part.location.IsEmpty())
1054 background_parts_.push_back(part);
1055 part.location = pp::Rect(
1056 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1057 if (!part.location.IsEmpty())
1058 background_parts_.push_back(part);
1059
1060 if (h_scrollbar_thickness
1061 #if defined(OS_MACOSX)
1062 ||
1063 #else
1064 &&
1065 #endif
1066 v_scrollbar_thickness) {
1067 part.color = 0xFFFFFFFF;
1068 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1069 plugin_size_.height() - h_scrollbar_thickness,
1070 h_scrollbar_thickness,
1071 v_scrollbar_thickness);
1072 background_parts_.push_back(part);
1073 }
1074 }
1075
1076 int Instance::GetDocumentPixelWidth() const {
1077 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1078 }
1079
1080 int Instance::GetDocumentPixelHeight() const {
1081 return static_cast<int>(ceil(document_size_.height() *
1082 zoom_ *
1083 device_scale_));
1084 }
1085
1086 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1087 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1088 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1089 int stride = image_data_.stride();
1090 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1091 int height = rect.height();
1092 int width = rect.width();
1093 for (int y = 0; y < height; ++y) {
1094 for (int x = 0; x < width; ++x)
1095 *(ptr + x) = color;
1096 ptr += stride / 4;
1097 }
1098 }
1099
1100 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1101 document_size_ = size;
1102
1103 OnGeometryChanged(zoom_, device_scale_);
1104 }
1105
1106 void Instance::Invalidate(const pp::Rect& rect) {
1107 pp::Rect offset_rect(rect);
1108 offset_rect.Offset(available_area_.point());
1109 paint_manager_.InvalidateRect(offset_rect);
1110 }
1111
1112 void Instance::Scroll(const pp::Point& point) {
1113 pp::Rect scroll_area = available_area_;
1114 if (IsOverlayScrollbar()) {
1115 pp::Rect rc;
1116 if (h_scrollbar_.get()) {
1117 h_scrollbar_->GetLocation(&rc);
1118 ScaleRect(device_scale_, &rc);
1119 if (scroll_area.bottom() > rc.y()) {
1120 scroll_area.set_height(rc.y() - scroll_area.y());
1121 paint_manager_.InvalidateRect(rc);
1122 }
1123 }
1124 if (v_scrollbar_.get()) {
1125 v_scrollbar_->GetLocation(&rc);
1126 ScaleRect(device_scale_, &rc);
1127 if (scroll_area.right() > rc.x()) {
1128 scroll_area.set_width(rc.x() - scroll_area.x());
1129 paint_manager_.InvalidateRect(rc);
1130 }
1131 }
1132 }
1133 paint_manager_.ScrollRect(scroll_area, point);
1134
1135 if (toolbar_->current_transparency() != kTransparentAlpha)
1136 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1137
1138 if (progress_bar_.visible())
1139 paint_manager_.InvalidateRect(progress_bar_.rect());
1140
1141 if (is_autoscroll_)
1142 paint_manager_.InvalidateRect(autoscroll_rect_);
1143
1144 if (show_page_indicator_) {
1145 page_indicator_.set_current_page(GetPageNumberToDisplay());
1146 page_indicator_.Splash();
1147 }
1148
1149 if (page_indicator_.visible())
1150 paint_manager_.InvalidateRect(page_indicator_.rect());
1151
1152 // Run the scroll callback asynchronously. This function can be invoked by a
1153 // layout change which should not re-enter into JS synchronously.
1154 pp::CompletionCallback callback =
1155 callback_factory_.NewCallback(&Instance::RunCallback,
1156 on_scroll_callback_);
1157 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1158 }
1159
1160 void Instance::ScrollToX(int position) {
1161 if (!h_scrollbar_.get()) {
1162 NOTREACHED();
1163 return;
1164 }
1165 int position_dip = static_cast<int>(position / device_scale_);
1166 h_scrollbar_->SetValue(position_dip);
1167 }
1168
1169 void Instance::ScrollToY(int position) {
1170 if (!v_scrollbar_.get()) {
1171 NOTREACHED();
1172 return;
1173 }
1174 int position_dip = static_cast<int>(position / device_scale_);
1175 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1176 }
1177
1178 void Instance::ScrollToPage(int page) {
1179 if (!v_scrollbar_.get())
1180 return;
1181
1182 if (engine_->GetNumberOfPages() == 0)
1183 return;
1184
1185 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1186 pp::Rect rect = engine_->GetPageRect(index);
1187 // If we are trying to scroll pass the last page,
1188 // scroll to the end of the last page.
1189 int position = index < page ? rect.bottom() : rect.y();
1190 ScrollToY(position * zoom_ * device_scale_);
1191 }
1192
1193 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1194 std::string url_copy(url);
1195
1196 // Empty |url_copy| is ok, and will effectively be a reload.
1197 // Skip the code below so an empty URL does not turn into "http://", which
1198 // will cause GURL to fail a DCHECK.
1199 if (!url_copy.empty()) {
1200 // If |url_copy| starts with '#', then it's for the same URL with a
1201 // different URL fragment.
1202 if (url_copy[0] == '#') {
1203 url_copy = url_ + url_copy;
1204 // Changing the href does not actually do anything when navigating in the
1205 // same tab, so do the actual page scroll here. Then fall through so the
1206 // href gets updated.
1207 if (!open_in_new_tab) {
1208 int page_number = GetInitialPage(url_copy);
1209 if (page_number >= 0)
1210 ScrollToPage(page_number);
1211 }
1212 }
1213 // If there's no scheme, add http.
1214 if (url_copy.find("://") == std::string::npos &&
1215 url_copy.find("mailto:") == std::string::npos) {
1216 url_copy = "http://" + url_copy;
1217 }
1218 // Make sure |url_copy| starts with a valid scheme.
1219 if (url_copy.find("http://") != 0 &&
1220 url_copy.find("https://") != 0 &&
1221 url_copy.find("ftp://") != 0 &&
1222 url_copy.find("file://") != 0 &&
1223 url_copy.find("mailto:") != 0) {
1224 return;
1225 }
1226 // Make sure |url_copy| is not only a scheme.
1227 if (url_copy == "http://" ||
1228 url_copy == "https://" ||
1229 url_copy == "ftp://" ||
1230 url_copy == "file://" ||
1231 url_copy == "mailto:") {
1232 return;
1233 }
1234 }
1235 if (open_in_new_tab) {
1236 GetWindowObject().Call("open", url_copy);
1237 } else {
1238 GetWindowObject().GetProperty("top").GetProperty("location").
1239 SetProperty("href", url_copy);
1240 }
1241 }
1242
1243 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1244 if (cursor == cursor_)
1245 return;
1246 cursor_ = cursor;
1247
1248 const PPB_CursorControl_Dev* cursor_interface =
1249 reinterpret_cast<const PPB_CursorControl_Dev*>(
1250 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1251 if (!cursor_interface) {
1252 NOTREACHED();
1253 return;
1254 }
1255
1256 cursor_interface->SetCursor(
1257 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1258 }
1259
1260 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1261 if (!v_scrollbar_.get())
1262 return;
1263
1264 float inverse_scale = 1.0f / device_scale_;
1265 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1266 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1267 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1268 }
1269
1270 v_scrollbar_->SetTickMarks(
1271 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1272 }
1273
1274 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1275 NumberOfFindResultsChanged(total, final_result);
1276 }
1277
1278 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1279 SelectedFindResultChanged(current_find_index);
1280 }
1281
1282 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1283 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1284 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1285 switch (control_id) {
1286 case kFitToPageButtonId:
1287 UserMetricsRecordAction("PDF.FitToPageButton");
1288 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1289 ZoomChanged(zoom_);
1290 break;
1291 case kFitToWidthButtonId:
1292 UserMetricsRecordAction("PDF.FitToWidthButton");
1293 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1294 ZoomChanged(zoom_);
1295 break;
1296 case kZoomOutButtonId:
1297 case kZoomInButtonId:
1298 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1299 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1300 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1301 ZoomChanged(zoom_);
1302 break;
1303 case kSaveButtonId:
1304 UserMetricsRecordAction("PDF.SaveButton");
1305 SaveAs();
1306 break;
1307 case kPrintButtonId:
1308 UserMetricsRecordAction("PDF.PrintButton");
1309 Print();
1310 break;
1311 }
1312 }
1313 if (control_id == kThumbnailsId &&
1314 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1315 int page = *static_cast<int*>(data);
1316 pp::Rect page_rc(engine_->GetPageRect(page));
1317 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1318 }
1319 }
1320
1321 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1322 paint_manager_.InvalidateRect(rc);
1323 }
1324
1325 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1326 current_timer_id_++;
1327 pp::CompletionCallback callback =
1328 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1329 control_id,
1330 current_timer_id_);
1331 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1332 return current_timer_id_;
1333 }
1334
1335 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1336 // TODO(gene): set event capture here.
1337 }
1338
1339 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1340 UpdateCursor(cursor_type);
1341 }
1342
1343 pp::Instance* Instance::GetInstance() {
1344 return this;
1345 }
1346
1347 void Instance::GetDocumentPassword(
1348 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1349 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1350 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1351 *callback.output() = result.pp_var();
1352 callback.Run(PP_OK);
1353 }
1354
1355 void Instance::Alert(const std::string& message) {
1356 GetWindowObject().Call("alert", message);
1357 }
1358
1359 bool Instance::Confirm(const std::string& message) {
1360 pp::Var result = GetWindowObject().Call("confirm", message);
1361 return result.is_bool() ? result.AsBool() : false;
1362 }
1363
1364 std::string Instance::Prompt(const std::string& question,
1365 const std::string& default_answer) {
1366 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1367 return result.is_string() ? result.AsString() : std::string();
1368 }
1369
1370 std::string Instance::GetURL() {
1371 return url_;
1372 }
1373
1374 void Instance::Email(const std::string& to,
1375 const std::string& cc,
1376 const std::string& bcc,
1377 const std::string& subject,
1378 const std::string& body) {
1379 std::string javascript =
1380 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1381 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1382 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1383 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1384 "&body=" + net::EscapeUrlEncodedData(body, false) +
1385 "';var temp = window.open(href, '_blank', " +
1386 "'width=1,height=1');if(temp) temp.close();";
1387 ExecuteScript(javascript);
1388 }
1389
1390 void Instance::Print() {
1391 if (!printing_enabled_ ||
1392 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1393 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1394 return;
1395 }
1396
1397 pp::CompletionCallback callback =
1398 callback_factory_.NewCallback(&Instance::OnPrint);
1399 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1400 }
1401
1402 void Instance::OnPrint(int32_t) {
1403 pp::PDF::Print(this);
1404 }
1405
1406 void Instance::SaveAs() {
1407 pp::PDF::SaveAs(this);
1408 }
1409
1410 void Instance::SubmitForm(const std::string& url,
1411 const void* data,
1412 int length) {
1413 pp::URLRequestInfo request(this);
1414 request.SetURL(url);
1415 request.SetMethod("POST");
1416 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1417
1418 pp::CompletionCallback callback =
1419 form_factory_.NewCallback(&Instance::FormDidOpen);
1420 form_loader_ = CreateURLLoaderInternal();
1421 int rv = form_loader_.Open(request, callback);
1422 if (rv != PP_OK_COMPLETIONPENDING)
1423 callback.Run(rv);
1424 }
1425
1426 void Instance::FormDidOpen(int32_t result) {
1427 // TODO: inform the user of success/failure.
1428 if (result != PP_OK) {
1429 NOTREACHED();
1430 }
1431 }
1432
1433 std::string Instance::ShowFileSelectionDialog() {
1434 // Seems like very low priority to implement, since the pdf has no way to get
1435 // the file data anyways. Javascript doesn't let you do this synchronously.
1436 NOTREACHED();
1437 return std::string();
1438 }
1439
1440 pp::URLLoader Instance::CreateURLLoader() {
1441 if (full_) {
1442 if (!did_call_start_loading_) {
1443 did_call_start_loading_ = true;
1444 pp::PDF::DidStartLoading(this);
1445 }
1446
1447 // Disable save and print until the document is fully loaded, since they
1448 // would generate an incomplete document. Need to do this each time we
1449 // call DidStartLoading since that resets the content restrictions.
1450 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1451 CONTENT_RESTRICTION_PRINT);
1452 }
1453
1454 return CreateURLLoaderInternal();
1455 }
1456
1457 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1458 pp::CompletionCallback callback =
1459 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1460 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1461 }
1462
1463 void Instance::SearchString(const base::char16* string,
1464 const base::char16* term,
1465 bool case_sensitive,
1466 std::vector<SearchStringResult>* results) {
1467 if (!pp::PDF::IsAvailable()) {
1468 NOTREACHED();
1469 return;
1470 }
1471
1472 PP_PrivateFindResult* pp_results;
1473 int count = 0;
1474 pp::PDF::SearchString(
1475 this,
1476 reinterpret_cast<const unsigned short*>(string),
1477 reinterpret_cast<const unsigned short*>(term),
1478 case_sensitive,
1479 &pp_results,
1480 &count);
1481
1482 results->resize(count);
1483 for (int i = 0; i < count; ++i) {
1484 (*results)[i].start_index = pp_results[i].start_index;
1485 (*results)[i].length = pp_results[i].length;
1486 }
1487
1488 pp::Memory_Dev memory;
1489 memory.MemFree(pp_results);
1490 }
1491
1492 void Instance::DocumentPaintOccurred() {
1493 if (painted_first_page_)
1494 return;
1495
1496 painted_first_page_ = true;
1497 UpdateToolbarPosition(false);
1498 toolbar_->Splash(kToolbarSplashTimeoutMs);
1499
1500 if (engine_->GetNumberOfPages() > 1)
1501 show_page_indicator_ = true;
1502 else
1503 show_page_indicator_ = false;
1504
1505 if (v_scrollbar_.get() && show_page_indicator_) {
1506 page_indicator_.set_current_page(GetPageNumberToDisplay());
1507 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1508 kPageIndicatorInitialFadeTimeoutMs);
1509 }
1510 }
1511
1512 void Instance::DocumentLoadComplete(int page_count) {
1513 // Clear focus state for OSK.
1514 FormTextFieldFocusChange(false);
1515
1516 // Update progress control.
1517 if (progress_bar_.visible())
1518 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1519
1520 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1521 document_load_state_ = LOAD_STATE_COMPLETE;
1522 UserMetricsRecordAction("PDF.LoadSuccess");
1523
1524 if (did_call_start_loading_) {
1525 pp::PDF::DidStopLoading(this);
1526 did_call_start_loading_ = false;
1527 }
1528
1529 if (on_load_callback_.is_string())
1530 ExecuteScript(on_load_callback_);
1531 // Note: If we are in print preview mode on_load_callback_ might call
1532 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1533 // #page=N is not supported in Print Preview.
1534 if (!IsPrintPreview()) {
1535 int initial_page = GetInitialPage(url_);
1536 if (initial_page >= 0)
1537 ScrollToPage(initial_page);
1538 }
1539
1540 if (!full_)
1541 return;
1542 if (!pp::PDF::IsAvailable())
1543 return;
1544
1545 int content_restrictions =
1546 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1547 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1548 content_restrictions |= CONTENT_RESTRICTION_COPY;
1549
1550 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1551 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1552 printing_enabled_ = false;
1553 if (current_tb_info_ == kPDFToolbarButtons) {
1554 // Remove Print button.
1555 CreateToolbar(kPDFNoPrintToolbarButtons,
1556 arraysize(kPDFNoPrintToolbarButtons));
1557 UpdateToolbarPosition(false);
1558 Invalidate(pp::Rect(plugin_size_));
1559 }
1560 }
1561
1562 pp::PDF::SetContentRestriction(this, content_restrictions);
1563
1564 pp::PDF::HistogramPDFPageCount(this, page_count);
1565 }
1566
1567 void Instance::RotateClockwise() {
1568 engine_->RotateClockwise();
1569 }
1570
1571 void Instance::RotateCounterclockwise() {
1572 engine_->RotateCounterclockwise();
1573 }
1574
1575 void Instance::PreviewDocumentLoadComplete() {
1576 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1577 preview_pages_info_.empty()) {
1578 return;
1579 }
1580
1581 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1582
1583 int dest_page_index = preview_pages_info_.front().second;
1584 int src_page_index =
1585 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1586 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1587 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1588
1589 preview_pages_info_.pop();
1590 // |print_preview_page_count_| is not updated yet. Do not load any
1591 // other preview pages till we get this information.
1592 if (print_preview_page_count_ == 0)
1593 return;
1594
1595 if (preview_pages_info_.size())
1596 LoadAvailablePreviewPage();
1597 }
1598
1599 void Instance::DocumentLoadFailed() {
1600 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1601 UserMetricsRecordAction("PDF.LoadFailure");
1602
1603 // Hide progress control.
1604 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1605
1606 if (did_call_start_loading_) {
1607 pp::PDF::DidStopLoading(this);
1608 did_call_start_loading_ = false;
1609 }
1610
1611 document_load_state_ = LOAD_STATE_FAILED;
1612 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1613 }
1614
1615 void Instance::PreviewDocumentLoadFailed() {
1616 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
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_FAILED;
1623 preview_pages_info_.pop();
1624
1625 if (preview_pages_info_.size())
1626 LoadAvailablePreviewPage();
1627 }
1628
1629 pp::Instance* Instance::GetPluginInstance() {
1630 return GetInstance();
1631 }
1632
1633 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1634 std::string metric("PDF_Unsupported_");
1635 metric += feature;
1636 if (!unsupported_features_reported_.count(metric)) {
1637 unsupported_features_reported_.insert(metric);
1638 UserMetricsRecordAction(metric);
1639 }
1640
1641 // Since we use an info bar, only do this for full frame plugins..
1642 if (!full_)
1643 return;
1644
1645 if (told_browser_about_unsupported_feature_)
1646 return;
1647 told_browser_about_unsupported_feature_ = true;
1648
1649 pp::PDF::HasUnsupportedFeature(this);
1650 }
1651
1652 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1653 double progress = 0.0;
1654 if (doc_size == 0) {
1655 // Document size is unknown. Use heuristics.
1656 // We'll make progress logarithmic from 0 to 100M.
1657 static const double kFactor = log(100000000.0) / 100.0;
1658 if (available > 0) {
1659 progress = log(static_cast<double>(available)) / kFactor;
1660 if (progress > 100.0)
1661 progress = 100.0;
1662 }
1663 } else {
1664 progress = 100.0 * static_cast<double>(available) / doc_size;
1665 }
1666 progress_bar_.SetProgress(progress);
1667 }
1668
1669 void Instance::FormTextFieldFocusChange(bool in_focus) {
1670 if (!text_input_.get())
1671 return;
1672 if (in_focus)
1673 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1674 else
1675 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1676 }
1677
1678 // Called by PDFScriptableObject.
1679 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1680 std::string method_str = method.AsString();
1681 return (method_str == kJSAccessibility ||
1682 method_str == kJSDocumentLoadComplete ||
1683 method_str == kJSGetHeight ||
1684 method_str == kJSGetHorizontalScrollbarThickness ||
1685 method_str == kJSGetPageLocationNormalized ||
1686 method_str == kJSGetVerticalScrollbarThickness ||
1687 method_str == kJSGetWidth ||
1688 method_str == kJSGetZoomLevel ||
1689 method_str == kJSGoToPage ||
1690 method_str == kJSGrayscale ||
1691 method_str == kJSLoadPreviewPage ||
1692 method_str == kJSOnLoad ||
1693 method_str == kJSOnPluginSizeChanged ||
1694 method_str == kJSOnScroll ||
1695 method_str == kJSPageXOffset ||
1696 method_str == kJSPageYOffset ||
1697 method_str == kJSPrintPreviewPageCount ||
1698 method_str == kJSReload ||
1699 method_str == kJSRemovePrintButton ||
1700 method_str == kJSResetPrintPreviewUrl ||
1701 method_str == kJSSendKeyEvent ||
1702 method_str == kJSSetPageNumbers ||
1703 method_str == kJSSetPageXOffset ||
1704 method_str == kJSSetPageYOffset ||
1705 method_str == kJSSetZoomLevel ||
1706 method_str == kJSZoomFitToHeight ||
1707 method_str == kJSZoomFitToWidth ||
1708 method_str == kJSZoomIn ||
1709 method_str == kJSZoomOut);
1710 }
1711
1712 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1713 const std::vector<pp::Var>& args,
1714 pp::Var* exception) {
1715 std::string method_str = method.AsString();
1716 if (method_str == kJSGrayscale) {
1717 if (args.size() == 1 && args[0].is_bool()) {
1718 engine_->SetGrayscale(args[0].AsBool());
1719 // Redraw
1720 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1721 #ifdef ENABLE_THUMBNAILS
1722 if (thumbnails_.visible())
1723 thumbnails_.Show(true, true);
1724 #endif
1725 return pp::Var(true);
1726 }
1727 return pp::Var(false);
1728 }
1729 if (method_str == kJSOnLoad) {
1730 if (args.size() == 1 && args[0].is_string()) {
1731 on_load_callback_ = args[0];
1732 return pp::Var(true);
1733 }
1734 return pp::Var(false);
1735 }
1736 if (method_str == kJSOnScroll) {
1737 if (args.size() == 1 && args[0].is_string()) {
1738 on_scroll_callback_ = args[0];
1739 return pp::Var(true);
1740 }
1741 return pp::Var(false);
1742 }
1743 if (method_str == kJSOnPluginSizeChanged) {
1744 if (args.size() == 1 && args[0].is_string()) {
1745 on_plugin_size_changed_callback_ = args[0];
1746 return pp::Var(true);
1747 }
1748 return pp::Var(false);
1749 }
1750 if (method_str == kJSReload) {
1751 document_load_state_ = LOAD_STATE_LOADING;
1752 if (!full_)
1753 LoadUrl(url_);
1754 preview_engine_.reset();
1755 print_preview_page_count_ = 0;
1756 engine_.reset(PDFEngine::Create(this));
1757 engine_->New(url_.c_str());
1758 #ifdef ENABLE_THUMBNAILS
1759 thumbnails_.ResetEngine(engine_.get());
1760 #endif
1761 return pp::Var();
1762 }
1763 if (method_str == kJSResetPrintPreviewUrl) {
1764 if (args.size() == 1 && args[0].is_string()) {
1765 url_ = args[0].AsString();
1766 preview_pages_info_ = std::queue<PreviewPageInfo>();
1767 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1768 }
1769 return pp::Var();
1770 }
1771 if (method_str == kJSZoomFitToHeight) {
1772 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1773 return pp::Var();
1774 }
1775 if (method_str == kJSZoomFitToWidth) {
1776 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1777 return pp::Var();
1778 }
1779 if (method_str == kJSZoomIn) {
1780 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1781 return pp::Var();
1782 }
1783 if (method_str == kJSZoomOut) {
1784 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1785 return pp::Var();
1786 }
1787 if (method_str == kJSSetZoomLevel) {
1788 if (args.size() == 1 && args[0].is_number())
1789 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1790 return pp::Var();
1791 }
1792 if (method_str == kJSGetZoomLevel) {
1793 return pp::Var(zoom_);
1794 }
1795 if (method_str == kJSGetHeight) {
1796 return pp::Var(plugin_size_.height());
1797 }
1798 if (method_str == kJSGetWidth) {
1799 return pp::Var(plugin_size_.width());
1800 }
1801 if (method_str == kJSGetHorizontalScrollbarThickness) {
1802 return pp::Var(
1803 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1804 }
1805 if (method_str == kJSGetVerticalScrollbarThickness) {
1806 return pp::Var(
1807 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1808 }
1809 if (method_str == kJSDocumentLoadComplete) {
1810 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1811 }
1812 if (method_str == kJSPageYOffset) {
1813 return pp::Var(static_cast<int32_t>(
1814 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1815 }
1816 if (method_str == kJSSetPageYOffset) {
1817 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1818 ScrollToY(GetScaled(args[0].AsInt()));
1819 return pp::Var();
1820 }
1821 if (method_str == kJSPageXOffset) {
1822 return pp::Var(static_cast<int32_t>(
1823 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1824 }
1825 if (method_str == kJSSetPageXOffset) {
1826 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1827 ScrollToX(GetScaled(args[0].AsInt()));
1828 return pp::Var();
1829 }
1830 if (method_str == kJSRemovePrintButton) {
1831 CreateToolbar(kPrintPreviewToolbarButtons,
1832 arraysize(kPrintPreviewToolbarButtons));
1833 UpdateToolbarPosition(false);
1834 Invalidate(pp::Rect(plugin_size_));
1835 return pp::Var();
1836 }
1837 if (method_str == kJSGoToPage) {
1838 if (args.size() == 1 && args[0].is_string()) {
1839 ScrollToPage(atoi(args[0].AsString().c_str()));
1840 }
1841 return pp::Var();
1842 }
1843 if (method_str == kJSAccessibility) {
1844 if (args.size() == 0) {
1845 base::DictionaryValue node;
1846 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1847 node.SetBoolean(kAccessibleLoaded,
1848 document_load_state_ != LOAD_STATE_LOADING);
1849 bool has_permissions =
1850 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1851 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1852 node.SetBoolean(kAccessibleCopyable, has_permissions);
1853 std::string json;
1854 base::JSONWriter::Write(&node, &json);
1855 return pp::Var(json);
1856 } else if (args[0].is_number()) {
1857 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1858 }
1859 }
1860 if (method_str == kJSPrintPreviewPageCount) {
1861 if (args.size() == 1 && args[0].is_number())
1862 SetPrintPreviewMode(args[0].AsInt());
1863 return pp::Var();
1864 }
1865 if (method_str == kJSLoadPreviewPage) {
1866 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1867 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1868 return pp::Var();
1869 }
1870 if (method_str == kJSGetPageLocationNormalized) {
1871 const size_t kMaxLength = 30;
1872 char location_info[kMaxLength];
1873 int page_idx = engine_->GetMostVisiblePage();
1874 if (page_idx < 0)
1875 return pp::Var(std::string());
1876 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1877 int v_scrollbar_reserved_thickness =
1878 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1879
1880 rect.set_x(rect.x() + ((plugin_size_.width() -
1881 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1882 base::snprintf(location_info,
1883 kMaxLength,
1884 "%0.4f;%0.4f;%0.4f;%0.4f;",
1885 rect.x() / static_cast<float>(plugin_size_.width()),
1886 rect.y() / static_cast<float>(plugin_size_.height()),
1887 rect.width() / static_cast<float>(plugin_size_.width()),
1888 rect.height()/ static_cast<float>(plugin_size_.height()));
1889 return pp::Var(std::string(location_info));
1890 }
1891 if (method_str == kJSSetPageNumbers) {
1892 if (args.size() != 1 || !args[0].is_string())
1893 return pp::Var();
1894 const int num_pages_signed = engine_->GetNumberOfPages();
1895 if (num_pages_signed <= 0)
1896 return pp::Var();
1897 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1898 base::JSONReader::Read(args[0].AsString(), false)));
1899 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1900 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1901 return pp::Var();
1902
1903 std::vector<int> print_preview_page_numbers;
1904 for (size_t index = 0; index < num_pages; ++index) {
1905 int page_number = 0; // |page_number| is 1-based.
1906 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1907 return pp::Var();
1908 print_preview_page_numbers.push_back(page_number);
1909 }
1910 print_preview_page_numbers_ = print_preview_page_numbers;
1911 page_indicator_.set_current_page(GetPageNumberToDisplay());
1912 return pp::Var();
1913 }
1914 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1915 // In JS, creating a synthetic keyboard event and dispatching it always
1916 // result in a keycode of 0.
1917 if (method_str == kJSSendKeyEvent) {
1918 if (args.size() == 1 && args[0].is_number()) {
1919 pp::KeyboardInputEvent event(
1920 this, // instance
1921 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1922 0, // timestamp, not used for kbd events.
1923 0, // no modifiers.
1924 args[0].AsInt(), // keycode.
1925 pp::Var()); // no char text needed.
1926 HandleInputEvent(event);
1927 }
1928 }
1929 return pp::Var();
1930 }
1931
1932 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1933 bool force_no_horizontal_scrollbar = false;
1934 int scrollbar_thickness = GetScrollbarThickness();
1935
1936 if (old_device_scale != device_scale_) {
1937 // Change in device scale forces us to recreate resources
1938 ConfigureNumberImageGenerator();
1939
1940 CreateToolbar(current_tb_info_, current_tb_info_size_);
1941 // Load autoscroll anchor image.
1942 autoscroll_anchor_ =
1943 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1944
1945 ConfigurePageIndicator();
1946 ConfigureProgressBar();
1947
1948 pp::Point scroll_position = engine_->GetScrollPosition();
1949 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1950 engine_->SetScrollPosition(scroll_position);
1951 }
1952
1953 UpdateZoomScale();
1954 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1955 engine_->ZoomUpdated(zoom_ * device_scale_);
1956 if (zoom_ != old_zoom)
1957 ZoomChanged(zoom_);
1958
1959 available_area_ = pp::Rect(plugin_size_);
1960 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1961 CreateVerticalScrollbar();
1962 } else {
1963 DestroyVerticalScrollbar();
1964 }
1965
1966 int v_scrollbar_reserved_thickness =
1967 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1968
1969 if (!force_no_horizontal_scrollbar &&
1970 GetDocumentPixelWidth() >
1971 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1972 CreateHorizontalScrollbar();
1973
1974 // Adding the horizontal scrollbar now might cause us to need vertical
1975 // scrollbars.
1976 if (GetDocumentPixelHeight() >
1977 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1978 CreateVerticalScrollbar();
1979 }
1980
1981 } else {
1982 DestroyHorizontalScrollbar();
1983 }
1984
1985 #ifdef ENABLE_THUMBNAILS
1986 int thumbnails_pos = 0, thumbnails_total = 0;
1987 #endif
1988 if (v_scrollbar_.get()) {
1989 v_scrollbar_->SetScale(device_scale_);
1990 available_area_.set_width(
1991 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
1992
1993 #ifdef ENABLE_THUMBNAILS
1994 int height = plugin_size_.height();
1995 #endif
1996 int height_dip = plugin_dip_size_.height();
1997
1998 #if defined(OS_MACOSX)
1999 // Before Lion, Mac always had the resize at the bottom. After that, it
2000 // never did.
2001 if ((base::mac::IsOSSnowLeopard() && full_) ||
2002 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2003 #else
2004 if (h_scrollbar_.get()) {
2005 #endif // defined(OS_MACOSX)
2006 #ifdef ENABLE_THUMBNAILS
2007 height -= GetScaled(GetScrollbarThickness());
2008 #endif
2009 height_dip -= GetScrollbarThickness();
2010 }
2011 #ifdef ENABLE_THUMBNAILS
2012 int32 doc_height = GetDocumentPixelHeight();
2013 #endif
2014 int32 doc_height_dip =
2015 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2016 #if defined(OS_MACOSX)
2017 // On the Mac we always allow room for the resize button (whose width is
2018 // the same as that of the scrollbar) in full mode. However, if there is no
2019 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2020 // end of the document. This is because the scrollbar assumes that its own
2021 // height (in the case of a vscroll bar) is the same as the height of the
2022 // viewport. Since the viewport is actually larger, we compensate by
2023 // adjusting the document height. Similar logic applies below for the
2024 // horizontal scrollbar.
2025 // For example, if the document size is 1000, and the viewport size is 200,
2026 // then the scrollbar position at the end will be 800. In this case the
2027 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2028 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2029 // be 785. Making the document size 985 achieves this.
2030 if (full_ && !h_scrollbar_.get()) {
2031 #ifdef ENABLE_THUMBNAILS
2032 doc_height -= GetScaled(GetScrollbarThickness());
2033 #endif
2034 doc_height_dip -= GetScrollbarThickness();
2035 }
2036 #endif // defined(OS_MACOSX)
2037
2038 int32 position;
2039 position = v_scrollbar_->GetValue();
2040 position = static_cast<int>(position * zoom_ / old_zoom);
2041 valid_v_range_ = doc_height_dip - height_dip;
2042 if (position > valid_v_range_)
2043 position = valid_v_range_;
2044
2045 v_scrollbar_->SetValue(position);
2046
2047 PP_Rect loc;
2048 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2049 if (IsOverlayScrollbar())
2050 loc.point.x -= scrollbar_thickness;
2051 loc.point.y = 0;
2052 loc.size.width = scrollbar_thickness;
2053 loc.size.height = height_dip;
2054 v_scrollbar_->SetLocation(loc);
2055 v_scrollbar_->SetDocumentSize(doc_height_dip);
2056
2057 #ifdef ENABLE_THUMBNAILS
2058 thumbnails_pos = position;
2059 thumbnails_total = doc_height - height;
2060 #endif
2061 }
2062
2063 if (h_scrollbar_.get()) {
2064 h_scrollbar_->SetScale(device_scale_);
2065 available_area_.set_height(
2066 std::max(0, plugin_size_.height() -
2067 GetScaled(GetScrollbarReservedThickness())));
2068
2069 int width_dip = plugin_dip_size_.width();
2070
2071 // See note above.
2072 #if defined(OS_MACOSX)
2073 if ((base::mac::IsOSSnowLeopard() && full_) ||
2074 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2075 #else
2076 if (v_scrollbar_.get()) {
2077 #endif
2078 width_dip -= GetScrollbarThickness();
2079 }
2080 int32 doc_width_dip =
2081 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2082 #if defined(OS_MACOSX)
2083 // See comment in the above if (v_scrollbar_.get()) block.
2084 if (full_ && !v_scrollbar_.get())
2085 doc_width_dip -= GetScrollbarThickness();
2086 #endif // defined(OS_MACOSX)
2087
2088 int32 position;
2089 position = h_scrollbar_->GetValue();
2090 position = static_cast<int>(position * zoom_ / old_zoom);
2091 position = std::min(position, doc_width_dip - width_dip);
2092
2093 h_scrollbar_->SetValue(position);
2094
2095 PP_Rect loc;
2096 loc.point.x = 0;
2097 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2098 if (IsOverlayScrollbar())
2099 loc.point.y -= scrollbar_thickness;
2100 loc.size.width = width_dip;
2101 loc.size.height = scrollbar_thickness;
2102 h_scrollbar_->SetLocation(loc);
2103 h_scrollbar_->SetDocumentSize(doc_width_dip);
2104 }
2105
2106 int doc_width = GetDocumentPixelWidth();
2107 if (doc_width < available_area_.width()) {
2108 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2109 available_area_.set_width(doc_width);
2110 }
2111 int doc_height = GetDocumentPixelHeight();
2112 if (doc_height < available_area_.height()) {
2113 available_area_.set_height(doc_height);
2114 }
2115
2116 // We'll invalidate the entire plugin anyways.
2117 UpdateToolbarPosition(false);
2118 UpdateProgressBarPosition(false);
2119 UpdatePageIndicatorPosition(false);
2120
2121 #ifdef ENABLE_THUMBNAILS
2122 // Update thumbnail control position.
2123 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2124 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2125 GetScaled(kThumbnailsWidth), plugin_size_.height());
2126 if (v_scrollbar_.get())
2127 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2128 if (h_scrollbar_.get())
2129 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2130 thumbnails_.SetRect(thumbnails_rc, false);
2131 #endif
2132
2133 CalculateBackgroundParts();
2134 engine_->PageOffsetUpdated(available_area_.point());
2135 engine_->PluginSizeUpdated(available_area_.size());
2136
2137 if (!document_size_.GetArea())
2138 return;
2139 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2140
2141 // Run the plugin size change callback asynchronously. This function can be
2142 // invoked by a layout change which should not re-enter into JS synchronously.
2143 pp::CompletionCallback callback =
2144 callback_factory_.NewCallback(&Instance::RunCallback,
2145 on_plugin_size_changed_callback_);
2146 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2147 }
2148
2149 void Instance::RunCallback(int32_t, pp::Var callback) {
2150 if (callback.is_string())
2151 ExecuteScript(callback);
2152 }
2153
2154 void Instance::CreateHorizontalScrollbar() {
2155 if (h_scrollbar_.get())
2156 return;
2157
2158 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2159 }
2160
2161 void Instance::CreateVerticalScrollbar() {
2162 if (v_scrollbar_.get())
2163 return;
2164
2165 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2166 }
2167
2168 void Instance::DestroyHorizontalScrollbar() {
2169 if (!h_scrollbar_.get())
2170 return;
2171 if (h_scrollbar_->GetValue())
2172 engine_->ScrolledToXPosition(0);
2173 h_scrollbar_.reset();
2174 }
2175
2176 void Instance::DestroyVerticalScrollbar() {
2177 if (!v_scrollbar_.get())
2178 return;
2179 if (v_scrollbar_->GetValue())
2180 engine_->ScrolledToYPosition(0);
2181 v_scrollbar_.reset();
2182 page_indicator_.Show(false, true);
2183 }
2184
2185 int Instance::GetScrollbarThickness() {
2186 if (scrollbar_thickness_ == -1) {
2187 pp::Scrollbar_Dev temp_scrollbar(this, false);
2188 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2189 scrollbar_reserved_thickness_ =
2190 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2191 }
2192
2193 return scrollbar_thickness_;
2194 }
2195
2196 int Instance::GetScrollbarReservedThickness() {
2197 GetScrollbarThickness();
2198 return scrollbar_reserved_thickness_;
2199 }
2200
2201 bool Instance::IsOverlayScrollbar() {
2202 return GetScrollbarReservedThickness() == 0;
2203 }
2204
2205 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2206 toolbar_.reset(new FadingControls());
2207
2208 DCHECK(tb_info);
2209 DCHECK(size >= 0);
2210
2211 // Remember the current toolbar information in case we need to recreate the
2212 // images later.
2213 current_tb_info_ = tb_info;
2214 current_tb_info_size_ = size;
2215
2216 int max_height = 0;
2217 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2218 ScalePoint(device_scale_, &origin);
2219
2220 std::list<Button*> buttons;
2221 for (size_t i = 0; i < size; i++) {
2222 Button* btn = new Button;
2223 pp::ImageData normal_face =
2224 CreateResourceImage(tb_info[i].normal);
2225 btn->CreateButton(tb_info[i].id,
2226 origin,
2227 true,
2228 toolbar_.get(),
2229 tb_info[i].style,
2230 normal_face,
2231 CreateResourceImage(tb_info[i].highlighted),
2232 CreateResourceImage(tb_info[i].pressed));
2233 buttons.push_back(btn);
2234
2235 origin += pp::Point(normal_face.size().width(), 0);
2236 max_height = std::max(max_height, normal_face.size().height());
2237 }
2238
2239 pp::Rect rc_toolbar(0, 0,
2240 origin.x() + GetToolbarRightOffset(),
2241 origin.y() + max_height + GetToolbarBottomOffset());
2242 toolbar_->CreateFadingControls(
2243 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2244
2245 std::list<Button*>::iterator iter;
2246 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2247 toolbar_->AddControl(*iter);
2248 }
2249 }
2250
2251 int Instance::GetToolbarRightOffset() {
2252 int scrollbar_thickness = GetScrollbarThickness();
2253 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2254 }
2255
2256 int Instance::GetToolbarBottomOffset() {
2257 int scrollbar_thickness = GetScrollbarThickness();
2258 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2259 }
2260
2261 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2262 std::vector<pp::ImageData> num_images(10);
2263 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2264 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2265 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2266 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2267 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2268 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2269 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2270 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2271 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2272 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2273 return num_images;
2274 }
2275
2276 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2277 pp::ImageData* background) {
2278 std::vector<pp::ImageData> result(9);
2279 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2280 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2281 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2282 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2283 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2284 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2285 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2286 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2287 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2288 *background = CreateResourceImage(
2289 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2290 return result;
2291 }
2292
2293 void Instance::CreatePageIndicator(bool always_visible) {
2294 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2295 number_image_generator(), always_visible);
2296 ConfigurePageIndicator();
2297 }
2298
2299 void Instance::ConfigurePageIndicator() {
2300 pp::ImageData background =
2301 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2302 page_indicator_.Configure(pp::Point(), background);
2303 }
2304
2305 void Instance::CreateProgressBar() {
2306 pp::ImageData background;
2307 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2308 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2309 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2310 device_scale_, images, background, text);
2311 }
2312
2313 void Instance::ConfigureProgressBar() {
2314 pp::ImageData background;
2315 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2316 progress_bar_.Reconfigure(background, images, device_scale_);
2317 }
2318
2319 void Instance::CreateThumbnails() {
2320 thumbnails_.CreateThumbnailControl(
2321 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2322 number_image_generator());
2323 }
2324
2325 void Instance::LoadUrl(const std::string& url) {
2326 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2327 }
2328
2329 void Instance::LoadPreviewUrl(const std::string& url) {
2330 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2331 }
2332
2333 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2334 void (Instance::* method)(int32_t)) {
2335 pp::URLRequestInfo request(this);
2336 request.SetURL(url);
2337 request.SetMethod("GET");
2338
2339 *loader = CreateURLLoaderInternal();
2340 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2341 int rv = loader->Open(request, callback);
2342 if (rv != PP_OK_COMPLETIONPENDING)
2343 callback.Run(rv);
2344 }
2345
2346 pp::URLLoader Instance::CreateURLLoaderInternal() {
2347 pp::URLLoader loader(this);
2348
2349 const PPB_URLLoaderTrusted* trusted_interface =
2350 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2351 pp::Module::Get()->GetBrowserInterface(
2352 PPB_URLLOADERTRUSTED_INTERFACE));
2353 if (trusted_interface)
2354 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2355 return loader;
2356 }
2357
2358 int Instance::GetInitialPage(const std::string& url) {
2359 size_t found_idx = url.find('#');
2360 if (found_idx == std::string::npos)
2361 return -1;
2362
2363 const std::string& ref = url.substr(found_idx + 1);
2364 std::vector<std::string> fragments;
2365 Tokenize(ref, kDelimiters, &fragments);
2366
2367 // Page number to return, zero-based.
2368 int page = -1;
2369
2370 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2371 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2372 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2373 return engine_->GetNamedDestinationPage(fragments[0]);
2374
2375 for (size_t i = 0; i < fragments.size(); ++i) {
2376 std::vector<std::string> key_value;
2377 base::SplitString(fragments[i], '=', &key_value);
2378 if (key_value.size() != 2)
2379 continue;
2380 const std::string& key = key_value[0];
2381 const std::string& value = key_value[1];
2382
2383 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2384 // |page_value| is 1-based.
2385 int page_value = -1;
2386 if (base::StringToInt(value, &page_value) && page_value > 0)
2387 page = page_value - 1;
2388 continue;
2389 }
2390 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2391 // |page_value| is 0-based.
2392 int page_value = engine_->GetNamedDestinationPage(value);
2393 if (page_value >= 0)
2394 page = page_value;
2395 continue;
2396 }
2397 }
2398 return page;
2399 }
2400
2401 void Instance::UpdateToolbarPosition(bool invalidate) {
2402 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2403 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2404 GetScaled(kToolbarFadingOffsetLeft);
2405 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2406 GetScaled(kToolbarFadingOffsetBottom);
2407
2408 // Update toolbar position
2409 if (plugin_size_.width() < min_toolbar_width ||
2410 plugin_size_.height() < min_toolbar_height) {
2411 // Disable toolbar if it does not fit on the screen.
2412 toolbar_->Show(false, invalidate);
2413 } else {
2414 pp::Point offset(
2415 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2416 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2417 toolbar_->MoveBy(offset, invalidate);
2418
2419 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2420 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2421 toolbar_->Show(painted_first_page_, invalidate);
2422 }
2423 }
2424
2425 void Instance::UpdateProgressBarPosition(bool invalidate) {
2426 // TODO(gene): verify we don't overlap with toolbar.
2427 int scrollbar_thickness = GetScrollbarThickness();
2428 pp::Point progress_origin(
2429 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2430 plugin_size_.height() - progress_bar_.rect().height() -
2431 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2432 progress_bar_.MoveTo(progress_origin, invalidate);
2433 }
2434
2435 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2436 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2437 pp::Point origin(
2438 plugin_size_.width() - page_indicator_.rect().width() -
2439 GetScaled(GetScrollbarReservedThickness()),
2440 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2441 doc_height, plugin_size_.height()));
2442 page_indicator_.MoveTo(origin, invalidate);
2443 }
2444
2445 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2446 double old_zoom = zoom_;
2447
2448 zoom_mode_ = zoom_mode;
2449 if (zoom_mode_ == ZOOM_SCALE)
2450 zoom_ = scale;
2451 UpdateZoomScale();
2452
2453 engine_->ZoomUpdated(zoom_ * device_scale_);
2454 OnGeometryChanged(old_zoom, device_scale_);
2455
2456 // If fit-to-height, snap to the beginning of the most visible page.
2457 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2458 ScrollToPage(engine_->GetMostVisiblePage());
2459 }
2460
2461 // Update sticky buttons to the current zoom style.
2462 Button* ftp_btn = static_cast<Button*>(
2463 toolbar_->GetControl(kFitToPageButtonId));
2464 Button* ftw_btn = static_cast<Button*>(
2465 toolbar_->GetControl(kFitToWidthButtonId));
2466 switch (zoom_mode_) {
2467 case ZOOM_FIT_TO_PAGE:
2468 ftp_btn->SetPressedState(true);
2469 ftw_btn->SetPressedState(false);
2470 break;
2471 case ZOOM_FIT_TO_WIDTH:
2472 ftw_btn->SetPressedState(true);
2473 ftp_btn->SetPressedState(false);
2474 break;
2475 default:
2476 ftw_btn->SetPressedState(false);
2477 ftp_btn->SetPressedState(false);
2478 }
2479 }
2480
2481 void Instance::UpdateZoomScale() {
2482 switch (zoom_mode_) {
2483 case ZOOM_SCALE:
2484 break; // Keep current scale.
2485 case ZOOM_FIT_TO_PAGE: {
2486 int page_num = engine_->GetFirstVisiblePage();
2487 if (page_num == -1)
2488 break;
2489 pp::Rect rc = engine_->GetPageRect(page_num);
2490 if (!rc.height())
2491 break;
2492 // Calculate fit to width zoom level.
2493 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2494 GetScrollbarReservedThickness()) / document_size_.width();
2495 // Calculate fit to height zoom level. If document will not fit
2496 // horizontally, adjust zoom level to allow space for horizontal
2497 // scrollbar.
2498 double fth_zoom =
2499 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2500 if (fth_zoom * document_size_.width() >
2501 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2502 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2503 - GetScrollbarReservedThickness()) / rc.height();
2504 zoom_ = std::min(ftw_zoom, fth_zoom);
2505 } break;
2506 case ZOOM_FIT_TO_WIDTH:
2507 case ZOOM_AUTO:
2508 if (!document_size_.width())
2509 break;
2510 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2511 GetScrollbarReservedThickness()) / document_size_.width();
2512 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2513 zoom_ = 1.0;
2514 break;
2515 }
2516 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2517 }
2518
2519 double Instance::CalculateZoom(uint32 control_id) const {
2520 if (control_id == kZoomInButtonId) {
2521 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2522 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2523 if (current_zoom - content::kEpsilon > zoom_)
2524 return current_zoom;
2525 }
2526 } else {
2527 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2528 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2529 if (current_zoom + content::kEpsilon < zoom_)
2530 return current_zoom;
2531 }
2532 }
2533 return zoom_;
2534 }
2535
2536 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2537 pp::ImageData resource_data;
2538 if (hidpi_enabled_) {
2539 resource_data =
2540 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2541 }
2542
2543 return resource_data.data() ? resource_data
2544 : pp::PDF::GetResourceImage(this, image_id);
2545 }
2546
2547 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2548 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2549 if (!rv.is_string())
2550 return std::string();
2551
2552 return rv.AsString();
2553 }
2554
2555 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2556 std::string str(GetLocalizedString(id));
2557
2558 pp::FontDescription_Dev description;
2559 description.set_family(PP_FONTFAMILY_SANSSERIF);
2560 description.set_size(kMessageTextSize * device_scale_);
2561 pp::Font_Dev font(this, description);
2562 int length = font.MeasureSimpleText(str);
2563 pp::Point point(top_center);
2564 point.set_x(point.x() - length / 2);
2565 DCHECK(!image_data_.is_null());
2566 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2567 }
2568
2569 void Instance::SetPrintPreviewMode(int page_count) {
2570 if (!IsPrintPreview() || page_count <= 0) {
2571 print_preview_page_count_ = 0;
2572 return;
2573 }
2574
2575 print_preview_page_count_ = page_count;
2576 ScrollToPage(0);
2577 engine_->AppendBlankPages(print_preview_page_count_);
2578 if (preview_pages_info_.size() > 0)
2579 LoadAvailablePreviewPage();
2580 }
2581
2582 bool Instance::IsPrintPreview() {
2583 return IsPrintPreviewUrl(url_);
2584 }
2585
2586 int Instance::GetPageNumberToDisplay() {
2587 int page = engine_->GetMostVisiblePage();
2588 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2589 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2590 return print_preview_page_numbers_[page];
2591 }
2592 return page + 1;
2593 }
2594
2595 void Instance::ProcessPreviewPageInfo(const std::string& url,
2596 int dst_page_index) {
2597 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2598 return;
2599
2600 int src_page_index = ExtractPrintPreviewPageIndex(url);
2601 if (src_page_index < 1)
2602 return;
2603
2604 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2605 LoadAvailablePreviewPage();
2606 }
2607
2608 void Instance::LoadAvailablePreviewPage() {
2609 if (preview_pages_info_.size() <= 0)
2610 return;
2611
2612 std::string url = preview_pages_info_.front().first;
2613 int dst_page_index = preview_pages_info_.front().second;
2614 int src_page_index = ExtractPrintPreviewPageIndex(url);
2615 if (src_page_index < 1 ||
2616 dst_page_index >= print_preview_page_count_ ||
2617 preview_document_load_state_ == LOAD_STATE_LOADING) {
2618 return;
2619 }
2620
2621 preview_document_load_state_ = LOAD_STATE_LOADING;
2622 LoadPreviewUrl(url);
2623 }
2624
2625 void Instance::EnableAutoscroll(const pp::Point& origin) {
2626 if (is_autoscroll_)
2627 return;
2628
2629 pp::Size client_size = plugin_size_;
2630 if (v_scrollbar_.get())
2631 client_size.Enlarge(-GetScrollbarThickness(), 0);
2632 if (h_scrollbar_.get())
2633 client_size.Enlarge(0, -GetScrollbarThickness());
2634
2635 // Do not allow autoscroll if client area is too small.
2636 if (autoscroll_anchor_.size().width() > client_size.width() ||
2637 autoscroll_anchor_.size().height() > client_size.height())
2638 return;
2639
2640 autoscroll_rect_ = pp::Rect(
2641 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2642 origin.y() - autoscroll_anchor_.size().height() / 2),
2643 autoscroll_anchor_.size());
2644
2645 // Make sure autoscroll anchor is in the client area.
2646 if (autoscroll_rect_.right() > client_size.width()) {
2647 autoscroll_rect_.set_x(
2648 client_size.width() - autoscroll_anchor_.size().width());
2649 }
2650 if (autoscroll_rect_.bottom() > client_size.height()) {
2651 autoscroll_rect_.set_y(
2652 client_size.height() - autoscroll_anchor_.size().height());
2653 }
2654
2655 if (autoscroll_rect_.x() < 0)
2656 autoscroll_rect_.set_x(0);
2657 if (autoscroll_rect_.y() < 0)
2658 autoscroll_rect_.set_y(0);
2659
2660 is_autoscroll_ = true;
2661 Invalidate(kAutoScrollId, autoscroll_rect_);
2662
2663 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2664 }
2665
2666 void Instance::DisableAutoscroll() {
2667 if (is_autoscroll_) {
2668 is_autoscroll_ = false;
2669 Invalidate(kAutoScrollId, autoscroll_rect_);
2670 }
2671 }
2672
2673 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2674 // Scroll only if mouse pointer is outside of the anchor area.
2675 if (autoscroll_rect_.Contains(mouse_pos)) {
2676 autoscroll_x_ = 0;
2677 autoscroll_y_ = 0;
2678 return PP_CURSORTYPE_MIDDLEPANNING;
2679 }
2680
2681 // Relative position to the center of anchor area.
2682 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2683
2684 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2685 double angle = atan2(static_cast<double>(rel_pos.y()),
2686 static_cast<double>(rel_pos.x()));
2687
2688 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2689 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2690
2691 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2692 // so negative angle represent north direction.
2693 if (angle < - (M_PI * 7.0 / 8.0)) {
2694 // going west
2695 return PP_CURSORTYPE_WESTPANNING;
2696 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2697 // going north-west
2698 return PP_CURSORTYPE_NORTHWESTPANNING;
2699 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2700 // going north.
2701 return PP_CURSORTYPE_NORTHPANNING;
2702 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2703 // going north-east
2704 return PP_CURSORTYPE_NORTHEASTPANNING;
2705 } else if (angle < M_PI * 1.0 / 8.0) {
2706 // going east.
2707 return PP_CURSORTYPE_EASTPANNING;
2708 } else if (angle < M_PI * 3.0 / 8.0) {
2709 // going south-east
2710 return PP_CURSORTYPE_SOUTHEASTPANNING;
2711 } else if (angle < M_PI * 5.0 / 8.0) {
2712 // going south.
2713 return PP_CURSORTYPE_SOUTHPANNING;
2714 } else if (angle < M_PI * 7.0 / 8.0) {
2715 // going south-west
2716 return PP_CURSORTYPE_SOUTHWESTPANNING;
2717 }
2718
2719 // went around the circle, going west again
2720 return PP_CURSORTYPE_WESTPANNING;
2721 }
2722
2723 void Instance::ConfigureNumberImageGenerator() {
2724 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2725 pp::ImageData number_background = CreateResourceImage(
2726 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2727 number_image_generator_->Configure(number_background,
2728 num_images,
2729 device_scale_);
2730 }
2731
2732 NumberImageGenerator* Instance::number_image_generator() {
2733 if (!number_image_generator_.get()) {
2734 number_image_generator_.reset(new NumberImageGenerator(this));
2735 ConfigureNumberImageGenerator();
2736 }
2737 return number_image_generator_.get();
2738 }
2739
2740 int Instance::GetScaled(int x) const {
2741 return static_cast<int>(x * device_scale_);
2742 }
2743
2744 void Instance::UserMetricsRecordAction(const std::string& action) {
2745 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2746 }
2747
2748 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2749 : instance_(instance) {
2750 }
2751
2752 PDFScriptableObject::~PDFScriptableObject() {
2753 }
2754
2755 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2756 return instance_->HasScriptableMethod(name, exception);
2757 }
2758
2759 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2760 const std::vector<pp::Var>& args,
2761 pp::Var* exception) {
2762 return instance_->CallScriptableMethod(method, args, exception);
2763 }
2764
2765 } // namespace chrome_pdf