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Add support for Manifest.icons.sizes
[chromium-blink-merge.git] / pdf / instance.cc
blob6a68400d6ee4e185291c7c5c8fcf7d9174056752
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 event.GetModifiers() & kDefaultKeyModifier) {
592 pp::KeyboardInputEvent keyboard_event(event);
593 switch (keyboard_event.GetKeyCode()) {
594 case 'A':
595 engine_->SelectAll();
596 return true;
597 case ui::VKEY_OEM_4:
598 // Left bracket.
599 engine_->RotateCounterclockwise();
600 return true;
601 case ui::VKEY_OEM_6:
602 // Right bracket.
603 engine_->RotateClockwise();
604 return true;
605 }
606 }
607
608 // Return true for unhandled clicks so the plugin takes focus.
609 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
610 }
611
612 void Instance::DidChangeView(const pp::View& view) {
613 pp::Rect view_rect(view.GetRect());
614 float device_scale = 1.0f;
615 float old_device_scale = device_scale_;
616 if (hidpi_enabled_)
617 device_scale = view.GetDeviceScale();
618 pp::Size view_device_size(view_rect.width() * device_scale,
619 view_rect.height() * device_scale);
620 if (view_device_size == plugin_size_ && device_scale == device_scale_)
621 return; // We don't care about the position, only the size.
622
623 image_data_ = pp::ImageData();
624 device_scale_ = device_scale;
625 plugin_dip_size_ = view_rect.size();
626 plugin_size_ = view_device_size;
627
628 paint_manager_.SetSize(view_device_size, device_scale_);
629
630 image_data_ = pp::ImageData(this,
631 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
632 plugin_size_,
633 false);
634 if (image_data_.is_null()) {
635 DCHECK(plugin_size_.IsEmpty());
636 return;
637 }
638
639 // View dimensions changed, disable autoscroll (if it was enabled).
640 DisableAutoscroll();
641
642 OnGeometryChanged(zoom_, old_device_scale);
643 }
644
645 pp::Var Instance::GetInstanceObject() {
646 if (instance_object_.is_undefined()) {
647 PDFScriptableObject* object = new PDFScriptableObject(this);
648 // The pp::Var takes ownership of object here.
649 instance_object_ = pp::VarPrivate(this, object);
650 }
651
652 return instance_object_;
653 }
654
655 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
656 pp::Point offset_point(point);
657 ScalePoint(device_scale_, &offset_point);
658 offset_point.set_x(offset_point.x() - available_area_.x());
659 return engine_->GetLinkAtPosition(offset_point);
660 }
661
662 pp::Var Instance::GetSelectedText(bool html) {
663 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
664 return pp::Var();
665 return engine_->GetSelectedText();
666 }
667
668 void Instance::InvalidateWidget(pp::Widget_Dev widget,
669 const pp::Rect& dirty_rect) {
670 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
671 if (!image_data_.is_null())
672 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
673 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
674 if (!image_data_.is_null())
675 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
676 } else {
677 // Possible to hit this condition since sometimes the scrollbar codes posts
678 // a task to do something later, and we could have deleted our reference in
679 // the meantime.
680 return;
681 }
682
683 pp::Rect dirty_rect_scaled = dirty_rect;
684 ScaleRect(device_scale_, &dirty_rect_scaled);
685 paint_manager_.InvalidateRect(dirty_rect_scaled);
686 }
687
688 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
689 uint32_t value) {
690 value = GetScaled(value);
691 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
692 engine_->ScrolledToYPosition(value);
693 pp::Rect rc;
694 v_scrollbar_->GetLocation(&rc);
695 int32 doc_height = GetDocumentPixelHeight();
696 doc_height -= GetScaled(rc.height());
697 #ifdef ENABLE_THUMBNAILS
698 if (thumbnails_.visible()) {
699 thumbnails_.SetPosition(value, doc_height, true);
700 }
701 #endif
702 pp::Point origin(
703 plugin_size_.width() - page_indicator_.rect().width() -
704 GetScaled(GetScrollbarReservedThickness()),
705 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
706 page_indicator_.MoveTo(origin, page_indicator_.visible());
707 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
708 engine_->ScrolledToXPosition(value);
709 }
710 }
711
712 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
713 bool overlay) {
714 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
715 OnGeometryChanged(zoom_, device_scale_);
716 }
717
718 uint32_t Instance::QuerySupportedPrintOutputFormats() {
719 return engine_->QuerySupportedPrintOutputFormats();
720 }
721
722 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
723 // For us num_pages is always equal to the number of pages in the PDF
724 // document irrespective of the printable area.
725 int32_t ret = engine_->GetNumberOfPages();
726 if (!ret)
727 return 0;
728
729 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
730 if ((print_settings.format & supported_formats) == 0)
731 return 0;
732
733 print_settings_.is_printing = true;
734 print_settings_.pepper_print_settings = print_settings;
735 engine_->PrintBegin();
736 return ret;
737 }
738
739 pp::Resource Instance::PrintPages(
740 const PP_PrintPageNumberRange_Dev* page_ranges,
741 uint32_t page_range_count) {
742 if (!print_settings_.is_printing)
743 return pp::Resource();
744
745 print_settings_.print_pages_called_ = true;
746 return engine_->PrintPages(page_ranges, page_range_count,
747 print_settings_.pepper_print_settings);
748 }
749
750 void Instance::PrintEnd() {
751 if (print_settings_.print_pages_called_)
752 UserMetricsRecordAction("PDF.PrintPage");
753 print_settings_.Clear();
754 engine_->PrintEnd();
755 }
756
757 bool Instance::IsPrintScalingDisabled() {
758 return !engine_->GetPrintScaling();
759 }
760
761 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
762 engine_->StartFind(text.c_str(), case_sensitive);
763 return true;
764 }
765
766 void Instance::SelectFindResult(bool forward) {
767 engine_->SelectFindResult(forward);
768 }
769
770 void Instance::StopFind() {
771 engine_->StopFind();
772 }
773
774 void Instance::Zoom(double scale, bool text_only) {
775 UserMetricsRecordAction("PDF.ZoomFromBrowser");
776 SetZoom(ZOOM_SCALE, scale);
777 }
778
779 void Instance::ZoomChanged(double factor) {
780 if (full_)
781 Zoom_Dev::ZoomChanged(factor);
782 }
783
784 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
785 std::vector<PaintManager::ReadyRect>* ready,
786 std::vector<pp::Rect>* pending) {
787 if (image_data_.is_null()) {
788 DCHECK(plugin_size_.IsEmpty());
789 return;
790 }
791 if (first_paint_) {
792 first_paint_ = false;
793 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
794 FillRect(rect, kBackgroundColor);
795 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
796 *pending = paint_rects;
797 return;
798 }
799
800 engine_->PrePaint();
801
802 for (size_t i = 0; i < paint_rects.size(); i++) {
803 // Intersect with plugin area since there could be pending invalidates from
804 // when the plugin area was larger.
805 pp::Rect rect =
806 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
807 if (rect.IsEmpty())
808 continue;
809
810 pp::Rect pdf_rect = available_area_.Intersect(rect);
811 if (!pdf_rect.IsEmpty()) {
812 pdf_rect.Offset(available_area_.x() * -1, 0);
813
814 std::vector<pp::Rect> pdf_ready;
815 std::vector<pp::Rect> pdf_pending;
816 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
817 for (size_t j = 0; j < pdf_ready.size(); ++j) {
818 pdf_ready[j].Offset(available_area_.point());
819 ready->push_back(
820 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
821 }
822 for (size_t j = 0; j < pdf_pending.size(); ++j) {
823 pdf_pending[j].Offset(available_area_.point());
824 pending->push_back(pdf_pending[j]);
825 }
826 }
827
828 for (size_t j = 0; j < background_parts_.size(); ++j) {
829 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
830 if (!intersection.IsEmpty()) {
831 FillRect(intersection, background_parts_[j].color);
832 ready->push_back(
833 PaintManager::ReadyRect(intersection, image_data_, false));
834 }
835 }
836
837 if (document_load_state_ == LOAD_STATE_FAILED) {
838 pp::Point top_center;
839 top_center.set_x(plugin_size_.width() / 2);
840 top_center.set_y(plugin_size_.height() / 2);
841 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
842 }
843
844 #ifdef ENABLE_THUMBNAILS
845 thumbnails_.Paint(&image_data_, rect);
846 #endif
847 }
848
849 engine_->PostPaint();
850
851 // Must paint scrollbars after the background parts, in case we have an
852 // overlay scrollbar that's over the background. We also do this in a separate
853 // loop because the scrollbar painting logic uses the signal of whether there
854 // are pending paints or not to figure out if it should draw right away or
855 // not.
856 for (size_t i = 0; i < paint_rects.size(); i++) {
857 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
858 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
859 }
860
861 if (progress_bar_.visible())
862 PaintOverlayControl(&progress_bar_, &image_data_, ready);
863
864 if (page_indicator_.visible())
865 PaintOverlayControl(&page_indicator_, &image_data_, ready);
866
867 if (toolbar_->current_transparency() != kTransparentAlpha)
868 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
869
870 // Paint autoscroll anchor if needed.
871 if (is_autoscroll_) {
872 size_t limit = ready->size();
873 for (size_t i = 0; i < limit; i++) {
874 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
875 if (!anchor_rect.IsEmpty()) {
876 pp::Rect draw_rc = pp::Rect(
877 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
878 anchor_rect.y() - autoscroll_rect_.y()),
879 anchor_rect.size());
880 // Paint autoscroll anchor.
881 AlphaBlend(autoscroll_anchor_, draw_rc,
882 &image_data_, anchor_rect.point(), kOpaqueAlpha);
883 }
884 }
885 }
886 }
887
888 void Instance::PaintOverlayControl(
889 Control* ctrl,
890 pp::ImageData* image_data,
891 std::vector<PaintManager::ReadyRect>* ready) {
892 // Make sure that we only paint overlay controls over an area that's ready,
893 // i.e. not pending. Otherwise we'll mark the control rect as ready and
894 // it'll overwrite the pdf region.
895 std::list<pp::Rect> ctrl_rects;
896 for (size_t i = 0; i < ready->size(); i++) {
897 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
898 if (!rc.IsEmpty())
899 ctrl_rects.push_back(rc);
900 }
901
902 if (!ctrl_rects.empty()) {
903 ctrl->PaintMultipleRects(image_data, ctrl_rects);
904
905 std::list<pp::Rect>::iterator iter;
906 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
907 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
908 }
909 }
910 }
911
912 void Instance::DidOpen(int32_t result) {
913 if (result == PP_OK) {
914 engine_->HandleDocumentLoad(embed_loader_);
915 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
916 NOTREACHED();
917 }
918 }
919
920 void Instance::DidOpenPreview(int32_t result) {
921 if (result == PP_OK) {
922 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
923 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
924 } else {
925 NOTREACHED();
926 }
927 }
928
929 void Instance::PaintIfWidgetIntersects(
930 pp::Widget_Dev* widget,
931 const pp::Rect& rect,
932 std::vector<PaintManager::ReadyRect>* ready,
933 std::vector<pp::Rect>* pending) {
934 if (!widget)
935 return;
936
937 pp::Rect location;
938 if (!widget->GetLocation(&location))
939 return;
940
941 ScaleRect(device_scale_, &location);
942 location = location.Intersect(rect);
943 if (location.IsEmpty())
944 return;
945
946 if (IsOverlayScrollbar()) {
947 // If we're using overlay scrollbars, and there are pending paints under the
948 // scrollbar, don't update the scrollbar instantly. While it would be nice,
949 // we would need to double buffer the plugin area in order to make this
950 // work. This is because we'd need to always have a copy of what the pdf
951 // under the scrollbar looks like, and additionally we couldn't paint the
952 // pdf under the scrollbar if it's ready until we got the preceding flush.
953 // So in practice, it would make painting slower and introduce extra buffer
954 // copies for the general case.
955 for (size_t i = 0; i < pending->size(); ++i) {
956 if ((*pending)[i].Intersects(location))
957 return;
958 }
959
960 // Even if none of the pending paints are under the scrollbar, we never want
961 // to paint it if it's over the pdf if there are other pending paints.
962 // Otherwise different parts of the pdf plugin would display at different
963 // scroll offsets.
964 if (!pending->empty() && available_area_.Intersects(rect)) {
965 pending->push_back(location);
966 return;
967 }
968 }
969
970 pp::Rect location_dip = location;
971 ScaleRect(1.0f / device_scale_, &location_dip);
972
973 DCHECK(!image_data_.is_null());
974 widget->Paint(location_dip, &image_data_);
975
976 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
977 }
978
979 void Instance::OnTimerFired(int32_t) {
980 HandleInputEvent(last_mouse_event_);
981 }
982
983 void Instance::OnClientTimerFired(int32_t id) {
984 engine_->OnCallback(id);
985 }
986
987 void Instance::OnControlTimerFired(int32_t,
988 const uint32& control_id,
989 const uint32& timer_id) {
990 if (control_id == toolbar_->id()) {
991 toolbar_->OnTimerFired(timer_id);
992 } else if (control_id == progress_bar_.id()) {
993 if (timer_id == delayed_progress_timer_id_) {
994 if (document_load_state_ == LOAD_STATE_LOADING &&
995 !progress_bar_.visible()) {
996 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
997 }
998 delayed_progress_timer_id_ = 0;
999 } else {
1000 progress_bar_.OnTimerFired(timer_id);
1001 }
1002 } else if (control_id == kAutoScrollId) {
1003 if (is_autoscroll_) {
1004 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1005 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1006 }
1007 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1008 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1009 }
1010
1011 // Reschedule timer.
1012 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1013 }
1014 } else if (control_id == kPageIndicatorId) {
1015 page_indicator_.OnTimerFired(timer_id);
1016 }
1017 #ifdef ENABLE_THUMBNAILS
1018 else if (control_id == thumbnails_.id()) {
1019 thumbnails_.OnTimerFired(timer_id);
1020 }
1021 #endif
1022 }
1023
1024 void Instance::CalculateBackgroundParts() {
1025 background_parts_.clear();
1026 int v_scrollbar_thickness =
1027 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1028 int h_scrollbar_thickness =
1029 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1030 int width_without_scrollbar = std::max(
1031 plugin_size_.width() - v_scrollbar_thickness, 0);
1032 int height_without_scrollbar = std::max(
1033 plugin_size_.height() - h_scrollbar_thickness, 0);
1034 int left_width = available_area_.x();
1035 int right_start = available_area_.right();
1036 int right_width = abs(width_without_scrollbar - available_area_.right());
1037 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1038
1039 // Add the left, right, and bottom rectangles. Note: we assume only
1040 // horizontal centering.
1041 BackgroundPart part = {
1042 pp::Rect(0, 0, left_width, bottom),
1043 kBackgroundColor
1044 };
1045 if (!part.location.IsEmpty())
1046 background_parts_.push_back(part);
1047 part.location = pp::Rect(right_start, 0, right_width, bottom);
1048 if (!part.location.IsEmpty())
1049 background_parts_.push_back(part);
1050 part.location = pp::Rect(
1051 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1052 if (!part.location.IsEmpty())
1053 background_parts_.push_back(part);
1054
1055 if (h_scrollbar_thickness
1056 #if defined(OS_MACOSX)
1057 ||
1058 #else
1059 &&
1060 #endif
1061 v_scrollbar_thickness) {
1062 part.color = 0xFFFFFFFF;
1063 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1064 plugin_size_.height() - h_scrollbar_thickness,
1065 h_scrollbar_thickness,
1066 v_scrollbar_thickness);
1067 background_parts_.push_back(part);
1068 }
1069 }
1070
1071 int Instance::GetDocumentPixelWidth() const {
1072 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1073 }
1074
1075 int Instance::GetDocumentPixelHeight() const {
1076 return static_cast<int>(ceil(document_size_.height() *
1077 zoom_ *
1078 device_scale_));
1079 }
1080
1081 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1082 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1083 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1084 int stride = image_data_.stride();
1085 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1086 int height = rect.height();
1087 int width = rect.width();
1088 for (int y = 0; y < height; ++y) {
1089 for (int x = 0; x < width; ++x)
1090 *(ptr + x) = color;
1091 ptr += stride / 4;
1092 }
1093 }
1094
1095 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1096 document_size_ = size;
1097
1098 OnGeometryChanged(zoom_, device_scale_);
1099 }
1100
1101 void Instance::Invalidate(const pp::Rect& rect) {
1102 pp::Rect offset_rect(rect);
1103 offset_rect.Offset(available_area_.point());
1104 paint_manager_.InvalidateRect(offset_rect);
1105 }
1106
1107 void Instance::Scroll(const pp::Point& point) {
1108 pp::Rect scroll_area = available_area_;
1109 if (IsOverlayScrollbar()) {
1110 pp::Rect rc;
1111 if (h_scrollbar_.get()) {
1112 h_scrollbar_->GetLocation(&rc);
1113 ScaleRect(device_scale_, &rc);
1114 if (scroll_area.bottom() > rc.y()) {
1115 scroll_area.set_height(rc.y() - scroll_area.y());
1116 paint_manager_.InvalidateRect(rc);
1117 }
1118 }
1119 if (v_scrollbar_.get()) {
1120 v_scrollbar_->GetLocation(&rc);
1121 ScaleRect(device_scale_, &rc);
1122 if (scroll_area.right() > rc.x()) {
1123 scroll_area.set_width(rc.x() - scroll_area.x());
1124 paint_manager_.InvalidateRect(rc);
1125 }
1126 }
1127 }
1128 paint_manager_.ScrollRect(scroll_area, point);
1129
1130 if (toolbar_->current_transparency() != kTransparentAlpha)
1131 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1132
1133 if (progress_bar_.visible())
1134 paint_manager_.InvalidateRect(progress_bar_.rect());
1135
1136 if (is_autoscroll_)
1137 paint_manager_.InvalidateRect(autoscroll_rect_);
1138
1139 if (show_page_indicator_) {
1140 page_indicator_.set_current_page(GetPageNumberToDisplay());
1141 page_indicator_.Splash();
1142 }
1143
1144 if (page_indicator_.visible())
1145 paint_manager_.InvalidateRect(page_indicator_.rect());
1146
1147 // Run the scroll callback asynchronously. This function can be invoked by a
1148 // layout change which should not re-enter into JS synchronously.
1149 pp::CompletionCallback callback =
1150 callback_factory_.NewCallback(&Instance::RunCallback,
1151 on_scroll_callback_);
1152 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1153 }
1154
1155 void Instance::ScrollToX(int position) {
1156 if (!h_scrollbar_.get()) {
1157 NOTREACHED();
1158 return;
1159 }
1160 int position_dip = static_cast<int>(position / device_scale_);
1161 h_scrollbar_->SetValue(position_dip);
1162 }
1163
1164 void Instance::ScrollToY(int position) {
1165 if (!v_scrollbar_.get()) {
1166 NOTREACHED();
1167 return;
1168 }
1169 int position_dip = static_cast<int>(position / device_scale_);
1170 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1171 }
1172
1173 void Instance::ScrollToPage(int page) {
1174 if (!v_scrollbar_.get())
1175 return;
1176
1177 if (engine_->GetNumberOfPages() == 0)
1178 return;
1179
1180 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1181 pp::Rect rect = engine_->GetPageRect(index);
1182 // If we are trying to scroll pass the last page,
1183 // scroll to the end of the last page.
1184 int position = index < page ? rect.bottom() : rect.y();
1185 ScrollToY(position * zoom_ * device_scale_);
1186 }
1187
1188 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1189 std::string url_copy(url);
1190
1191 // Empty |url_copy| is ok, and will effectively be a reload.
1192 // Skip the code below so an empty URL does not turn into "http://", which
1193 // will cause GURL to fail a DCHECK.
1194 if (!url_copy.empty()) {
1195 // If |url_copy| starts with '#', then it's for the same URL with a
1196 // different URL fragment.
1197 if (url_copy[0] == '#') {
1198 url_copy = url_ + url_copy;
1199 // Changing the href does not actually do anything when navigating in the
1200 // same tab, so do the actual page scroll here. Then fall through so the
1201 // href gets updated.
1202 if (!open_in_new_tab) {
1203 int page_number = GetInitialPage(url_copy);
1204 if (page_number >= 0)
1205 ScrollToPage(page_number);
1206 }
1207 }
1208 // If there's no scheme, add http.
1209 if (url_copy.find("://") == std::string::npos &&
1210 url_copy.find("mailto:") == std::string::npos) {
1211 url_copy = "http://" + url_copy;
1212 }
1213 // Make sure |url_copy| starts with a valid scheme.
1214 if (url_copy.find("http://") != 0 &&
1215 url_copy.find("https://") != 0 &&
1216 url_copy.find("ftp://") != 0 &&
1217 url_copy.find("file://") != 0 &&
1218 url_copy.find("mailto:") != 0) {
1219 return;
1220 }
1221 // Make sure |url_copy| is not only a scheme.
1222 if (url_copy == "http://" ||
1223 url_copy == "https://" ||
1224 url_copy == "ftp://" ||
1225 url_copy == "file://" ||
1226 url_copy == "mailto:") {
1227 return;
1228 }
1229 }
1230 if (open_in_new_tab) {
1231 GetWindowObject().Call("open", url_copy);
1232 } else {
1233 GetWindowObject().GetProperty("top").GetProperty("location").
1234 SetProperty("href", url_copy);
1235 }
1236 }
1237
1238 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1239 if (cursor == cursor_)
1240 return;
1241 cursor_ = cursor;
1242
1243 const PPB_CursorControl_Dev* cursor_interface =
1244 reinterpret_cast<const PPB_CursorControl_Dev*>(
1245 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1246 if (!cursor_interface) {
1247 NOTREACHED();
1248 return;
1249 }
1250
1251 cursor_interface->SetCursor(
1252 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1253 }
1254
1255 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1256 if (!v_scrollbar_.get())
1257 return;
1258
1259 float inverse_scale = 1.0f / device_scale_;
1260 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1261 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1262 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1263 }
1264
1265 v_scrollbar_->SetTickMarks(
1266 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1267 }
1268
1269 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1270 NumberOfFindResultsChanged(total, final_result);
1271 }
1272
1273 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1274 SelectedFindResultChanged(current_find_index);
1275 }
1276
1277 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1278 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1279 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1280 switch (control_id) {
1281 case kFitToPageButtonId:
1282 UserMetricsRecordAction("PDF.FitToPageButton");
1283 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1284 ZoomChanged(zoom_);
1285 break;
1286 case kFitToWidthButtonId:
1287 UserMetricsRecordAction("PDF.FitToWidthButton");
1288 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1289 ZoomChanged(zoom_);
1290 break;
1291 case kZoomOutButtonId:
1292 case kZoomInButtonId:
1293 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1294 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1295 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1296 ZoomChanged(zoom_);
1297 break;
1298 case kSaveButtonId:
1299 UserMetricsRecordAction("PDF.SaveButton");
1300 SaveAs();
1301 break;
1302 case kPrintButtonId:
1303 UserMetricsRecordAction("PDF.PrintButton");
1304 Print();
1305 break;
1306 }
1307 }
1308 if (control_id == kThumbnailsId &&
1309 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1310 int page = *static_cast<int*>(data);
1311 pp::Rect page_rc(engine_->GetPageRect(page));
1312 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1313 }
1314 }
1315
1316 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1317 paint_manager_.InvalidateRect(rc);
1318 }
1319
1320 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1321 current_timer_id_++;
1322 pp::CompletionCallback callback =
1323 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1324 control_id,
1325 current_timer_id_);
1326 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1327 return current_timer_id_;
1328 }
1329
1330 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1331 // TODO(gene): set event capture here.
1332 }
1333
1334 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1335 UpdateCursor(cursor_type);
1336 }
1337
1338 pp::Instance* Instance::GetInstance() {
1339 return this;
1340 }
1341
1342 void Instance::GetDocumentPassword(
1343 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1344 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1345 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1346 *callback.output() = result.pp_var();
1347 callback.Run(PP_OK);
1348 }
1349
1350 void Instance::Alert(const std::string& message) {
1351 GetWindowObject().Call("alert", message);
1352 }
1353
1354 bool Instance::Confirm(const std::string& message) {
1355 pp::Var result = GetWindowObject().Call("confirm", message);
1356 return result.is_bool() ? result.AsBool() : false;
1357 }
1358
1359 std::string Instance::Prompt(const std::string& question,
1360 const std::string& default_answer) {
1361 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1362 return result.is_string() ? result.AsString() : std::string();
1363 }
1364
1365 std::string Instance::GetURL() {
1366 return url_;
1367 }
1368
1369 void Instance::Email(const std::string& to,
1370 const std::string& cc,
1371 const std::string& bcc,
1372 const std::string& subject,
1373 const std::string& body) {
1374 std::string javascript =
1375 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1376 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1377 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1378 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1379 "&body=" + net::EscapeUrlEncodedData(body, false) +
1380 "';var temp = window.open(href, '_blank', " +
1381 "'width=1,height=1');if(temp) temp.close();";
1382 ExecuteScript(javascript);
1383 }
1384
1385 void Instance::Print() {
1386 if (!printing_enabled_ ||
1387 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1388 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1389 return;
1390 }
1391
1392 pp::CompletionCallback callback =
1393 callback_factory_.NewCallback(&Instance::OnPrint);
1394 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1395 }
1396
1397 void Instance::OnPrint(int32_t) {
1398 pp::PDF::Print(this);
1399 }
1400
1401 void Instance::SaveAs() {
1402 pp::PDF::SaveAs(this);
1403 }
1404
1405 void Instance::SubmitForm(const std::string& url,
1406 const void* data,
1407 int length) {
1408 pp::URLRequestInfo request(this);
1409 request.SetURL(url);
1410 request.SetMethod("POST");
1411 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1412
1413 pp::CompletionCallback callback =
1414 form_factory_.NewCallback(&Instance::FormDidOpen);
1415 form_loader_ = CreateURLLoaderInternal();
1416 int rv = form_loader_.Open(request, callback);
1417 if (rv != PP_OK_COMPLETIONPENDING)
1418 callback.Run(rv);
1419 }
1420
1421 void Instance::FormDidOpen(int32_t result) {
1422 // TODO: inform the user of success/failure.
1423 if (result != PP_OK) {
1424 NOTREACHED();
1425 }
1426 }
1427
1428 std::string Instance::ShowFileSelectionDialog() {
1429 // Seems like very low priority to implement, since the pdf has no way to get
1430 // the file data anyways. Javascript doesn't let you do this synchronously.
1431 NOTREACHED();
1432 return std::string();
1433 }
1434
1435 pp::URLLoader Instance::CreateURLLoader() {
1436 if (full_) {
1437 if (!did_call_start_loading_) {
1438 did_call_start_loading_ = true;
1439 pp::PDF::DidStartLoading(this);
1440 }
1441
1442 // Disable save and print until the document is fully loaded, since they
1443 // would generate an incomplete document. Need to do this each time we
1444 // call DidStartLoading since that resets the content restrictions.
1445 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1446 CONTENT_RESTRICTION_PRINT);
1447 }
1448
1449 return CreateURLLoaderInternal();
1450 }
1451
1452 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1453 pp::CompletionCallback callback =
1454 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1455 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1456 }
1457
1458 void Instance::SearchString(const base::char16* string,
1459 const base::char16* term,
1460 bool case_sensitive,
1461 std::vector<SearchStringResult>* results) {
1462 if (!pp::PDF::IsAvailable()) {
1463 NOTREACHED();
1464 return;
1465 }
1466
1467 PP_PrivateFindResult* pp_results;
1468 int count = 0;
1469 pp::PDF::SearchString(
1470 this,
1471 reinterpret_cast<const unsigned short*>(string),
1472 reinterpret_cast<const unsigned short*>(term),
1473 case_sensitive,
1474 &pp_results,
1475 &count);
1476
1477 results->resize(count);
1478 for (int i = 0; i < count; ++i) {
1479 (*results)[i].start_index = pp_results[i].start_index;
1480 (*results)[i].length = pp_results[i].length;
1481 }
1482
1483 pp::Memory_Dev memory;
1484 memory.MemFree(pp_results);
1485 }
1486
1487 void Instance::DocumentPaintOccurred() {
1488 if (painted_first_page_)
1489 return;
1490
1491 painted_first_page_ = true;
1492 UpdateToolbarPosition(false);
1493 toolbar_->Splash(kToolbarSplashTimeoutMs);
1494
1495 if (engine_->GetNumberOfPages() > 1)
1496 show_page_indicator_ = true;
1497 else
1498 show_page_indicator_ = false;
1499
1500 if (v_scrollbar_.get() && show_page_indicator_) {
1501 page_indicator_.set_current_page(GetPageNumberToDisplay());
1502 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1503 kPageIndicatorInitialFadeTimeoutMs);
1504 }
1505 }
1506
1507 void Instance::DocumentLoadComplete(int page_count) {
1508 // Clear focus state for OSK.
1509 FormTextFieldFocusChange(false);
1510
1511 // Update progress control.
1512 if (progress_bar_.visible())
1513 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1514
1515 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1516 document_load_state_ = LOAD_STATE_COMPLETE;
1517 UserMetricsRecordAction("PDF.LoadSuccess");
1518
1519 if (did_call_start_loading_) {
1520 pp::PDF::DidStopLoading(this);
1521 did_call_start_loading_ = false;
1522 }
1523
1524 if (on_load_callback_.is_string())
1525 ExecuteScript(on_load_callback_);
1526 // Note: If we are in print preview mode on_load_callback_ might call
1527 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1528 // #page=N is not supported in Print Preview.
1529 if (!IsPrintPreview()) {
1530 int initial_page = GetInitialPage(url_);
1531 if (initial_page >= 0)
1532 ScrollToPage(initial_page);
1533 }
1534
1535 if (!full_)
1536 return;
1537 if (!pp::PDF::IsAvailable())
1538 return;
1539
1540 int content_restrictions =
1541 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1542 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1543 content_restrictions |= CONTENT_RESTRICTION_COPY;
1544
1545 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1546 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1547 printing_enabled_ = false;
1548 if (current_tb_info_ == kPDFToolbarButtons) {
1549 // Remove Print button.
1550 CreateToolbar(kPDFNoPrintToolbarButtons,
1551 arraysize(kPDFNoPrintToolbarButtons));
1552 UpdateToolbarPosition(false);
1553 Invalidate(pp::Rect(plugin_size_));
1554 }
1555 }
1556
1557 pp::PDF::SetContentRestriction(this, content_restrictions);
1558
1559 pp::PDF::HistogramPDFPageCount(this, page_count);
1560 }
1561
1562 void Instance::RotateClockwise() {
1563 engine_->RotateClockwise();
1564 }
1565
1566 void Instance::RotateCounterclockwise() {
1567 engine_->RotateCounterclockwise();
1568 }
1569
1570 void Instance::PreviewDocumentLoadComplete() {
1571 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1572 preview_pages_info_.empty()) {
1573 return;
1574 }
1575
1576 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1577
1578 int dest_page_index = preview_pages_info_.front().second;
1579 int src_page_index =
1580 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1581 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1582 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1583
1584 preview_pages_info_.pop();
1585 // |print_preview_page_count_| is not updated yet. Do not load any
1586 // other preview pages till we get this information.
1587 if (print_preview_page_count_ == 0)
1588 return;
1589
1590 if (preview_pages_info_.size())
1591 LoadAvailablePreviewPage();
1592 }
1593
1594 void Instance::DocumentLoadFailed() {
1595 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1596 UserMetricsRecordAction("PDF.LoadFailure");
1597
1598 // Hide progress control.
1599 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1600
1601 if (did_call_start_loading_) {
1602 pp::PDF::DidStopLoading(this);
1603 did_call_start_loading_ = false;
1604 }
1605
1606 document_load_state_ = LOAD_STATE_FAILED;
1607 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1608 }
1609
1610 void Instance::PreviewDocumentLoadFailed() {
1611 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1612 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1613 preview_pages_info_.empty()) {
1614 return;
1615 }
1616
1617 preview_document_load_state_ = LOAD_STATE_FAILED;
1618 preview_pages_info_.pop();
1619
1620 if (preview_pages_info_.size())
1621 LoadAvailablePreviewPage();
1622 }
1623
1624 pp::Instance* Instance::GetPluginInstance() {
1625 return GetInstance();
1626 }
1627
1628 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1629 std::string metric("PDF_Unsupported_");
1630 metric += feature;
1631 if (!unsupported_features_reported_.count(metric)) {
1632 unsupported_features_reported_.insert(metric);
1633 UserMetricsRecordAction(metric);
1634 }
1635
1636 // Since we use an info bar, only do this for full frame plugins..
1637 if (!full_)
1638 return;
1639
1640 if (told_browser_about_unsupported_feature_)
1641 return;
1642 told_browser_about_unsupported_feature_ = true;
1643
1644 pp::PDF::HasUnsupportedFeature(this);
1645 }
1646
1647 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1648 double progress = 0.0;
1649 if (doc_size == 0) {
1650 // Document size is unknown. Use heuristics.
1651 // We'll make progress logarithmic from 0 to 100M.
1652 static const double kFactor = log(100000000.0) / 100.0;
1653 if (available > 0) {
1654 progress = log(static_cast<double>(available)) / kFactor;
1655 if (progress > 100.0)
1656 progress = 100.0;
1657 }
1658 } else {
1659 progress = 100.0 * static_cast<double>(available) / doc_size;
1660 }
1661 progress_bar_.SetProgress(progress);
1662 }
1663
1664 void Instance::FormTextFieldFocusChange(bool in_focus) {
1665 if (!text_input_.get())
1666 return;
1667 if (in_focus)
1668 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1669 else
1670 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1671 }
1672
1673 // Called by PDFScriptableObject.
1674 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1675 std::string method_str = method.AsString();
1676 return (method_str == kJSAccessibility ||
1677 method_str == kJSDocumentLoadComplete ||
1678 method_str == kJSGetHeight ||
1679 method_str == kJSGetHorizontalScrollbarThickness ||
1680 method_str == kJSGetPageLocationNormalized ||
1681 method_str == kJSGetVerticalScrollbarThickness ||
1682 method_str == kJSGetWidth ||
1683 method_str == kJSGetZoomLevel ||
1684 method_str == kJSGoToPage ||
1685 method_str == kJSGrayscale ||
1686 method_str == kJSLoadPreviewPage ||
1687 method_str == kJSOnLoad ||
1688 method_str == kJSOnPluginSizeChanged ||
1689 method_str == kJSOnScroll ||
1690 method_str == kJSPageXOffset ||
1691 method_str == kJSPageYOffset ||
1692 method_str == kJSPrintPreviewPageCount ||
1693 method_str == kJSReload ||
1694 method_str == kJSRemovePrintButton ||
1695 method_str == kJSResetPrintPreviewUrl ||
1696 method_str == kJSSendKeyEvent ||
1697 method_str == kJSSetPageNumbers ||
1698 method_str == kJSSetPageXOffset ||
1699 method_str == kJSSetPageYOffset ||
1700 method_str == kJSSetZoomLevel ||
1701 method_str == kJSZoomFitToHeight ||
1702 method_str == kJSZoomFitToWidth ||
1703 method_str == kJSZoomIn ||
1704 method_str == kJSZoomOut);
1705 }
1706
1707 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1708 const std::vector<pp::Var>& args,
1709 pp::Var* exception) {
1710 std::string method_str = method.AsString();
1711 if (method_str == kJSGrayscale) {
1712 if (args.size() == 1 && args[0].is_bool()) {
1713 engine_->SetGrayscale(args[0].AsBool());
1714 // Redraw
1715 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1716 #ifdef ENABLE_THUMBNAILS
1717 if (thumbnails_.visible())
1718 thumbnails_.Show(true, true);
1719 #endif
1720 return pp::Var(true);
1721 }
1722 return pp::Var(false);
1723 }
1724 if (method_str == kJSOnLoad) {
1725 if (args.size() == 1 && args[0].is_string()) {
1726 on_load_callback_ = args[0];
1727 return pp::Var(true);
1728 }
1729 return pp::Var(false);
1730 }
1731 if (method_str == kJSOnScroll) {
1732 if (args.size() == 1 && args[0].is_string()) {
1733 on_scroll_callback_ = args[0];
1734 return pp::Var(true);
1735 }
1736 return pp::Var(false);
1737 }
1738 if (method_str == kJSOnPluginSizeChanged) {
1739 if (args.size() == 1 && args[0].is_string()) {
1740 on_plugin_size_changed_callback_ = args[0];
1741 return pp::Var(true);
1742 }
1743 return pp::Var(false);
1744 }
1745 if (method_str == kJSReload) {
1746 document_load_state_ = LOAD_STATE_LOADING;
1747 if (!full_)
1748 LoadUrl(url_);
1749 preview_engine_.reset();
1750 print_preview_page_count_ = 0;
1751 engine_.reset(PDFEngine::Create(this));
1752 engine_->New(url_.c_str());
1753 #ifdef ENABLE_THUMBNAILS
1754 thumbnails_.ResetEngine(engine_.get());
1755 #endif
1756 return pp::Var();
1757 }
1758 if (method_str == kJSResetPrintPreviewUrl) {
1759 if (args.size() == 1 && args[0].is_string()) {
1760 url_ = args[0].AsString();
1761 preview_pages_info_ = std::queue<PreviewPageInfo>();
1762 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1763 }
1764 return pp::Var();
1765 }
1766 if (method_str == kJSZoomFitToHeight) {
1767 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1768 return pp::Var();
1769 }
1770 if (method_str == kJSZoomFitToWidth) {
1771 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1772 return pp::Var();
1773 }
1774 if (method_str == kJSZoomIn) {
1775 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1776 return pp::Var();
1777 }
1778 if (method_str == kJSZoomOut) {
1779 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1780 return pp::Var();
1781 }
1782 if (method_str == kJSSetZoomLevel) {
1783 if (args.size() == 1 && args[0].is_number())
1784 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1785 return pp::Var();
1786 }
1787 if (method_str == kJSGetZoomLevel) {
1788 return pp::Var(zoom_);
1789 }
1790 if (method_str == kJSGetHeight) {
1791 return pp::Var(plugin_size_.height());
1792 }
1793 if (method_str == kJSGetWidth) {
1794 return pp::Var(plugin_size_.width());
1795 }
1796 if (method_str == kJSGetHorizontalScrollbarThickness) {
1797 return pp::Var(
1798 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1799 }
1800 if (method_str == kJSGetVerticalScrollbarThickness) {
1801 return pp::Var(
1802 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1803 }
1804 if (method_str == kJSDocumentLoadComplete) {
1805 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1806 }
1807 if (method_str == kJSPageYOffset) {
1808 return pp::Var(static_cast<int32_t>(
1809 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1810 }
1811 if (method_str == kJSSetPageYOffset) {
1812 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1813 ScrollToY(GetScaled(args[0].AsInt()));
1814 return pp::Var();
1815 }
1816 if (method_str == kJSPageXOffset) {
1817 return pp::Var(static_cast<int32_t>(
1818 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1819 }
1820 if (method_str == kJSSetPageXOffset) {
1821 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1822 ScrollToX(GetScaled(args[0].AsInt()));
1823 return pp::Var();
1824 }
1825 if (method_str == kJSRemovePrintButton) {
1826 CreateToolbar(kPrintPreviewToolbarButtons,
1827 arraysize(kPrintPreviewToolbarButtons));
1828 UpdateToolbarPosition(false);
1829 Invalidate(pp::Rect(plugin_size_));
1830 return pp::Var();
1831 }
1832 if (method_str == kJSGoToPage) {
1833 if (args.size() == 1 && args[0].is_string()) {
1834 ScrollToPage(atoi(args[0].AsString().c_str()));
1835 }
1836 return pp::Var();
1837 }
1838 if (method_str == kJSAccessibility) {
1839 if (args.size() == 0) {
1840 base::DictionaryValue node;
1841 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1842 node.SetBoolean(kAccessibleLoaded,
1843 document_load_state_ != LOAD_STATE_LOADING);
1844 bool has_permissions =
1845 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1846 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1847 node.SetBoolean(kAccessibleCopyable, has_permissions);
1848 std::string json;
1849 base::JSONWriter::Write(&node, &json);
1850 return pp::Var(json);
1851 } else if (args[0].is_number()) {
1852 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1853 }
1854 }
1855 if (method_str == kJSPrintPreviewPageCount) {
1856 if (args.size() == 1 && args[0].is_number())
1857 SetPrintPreviewMode(args[0].AsInt());
1858 return pp::Var();
1859 }
1860 if (method_str == kJSLoadPreviewPage) {
1861 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1862 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1863 return pp::Var();
1864 }
1865 if (method_str == kJSGetPageLocationNormalized) {
1866 const size_t kMaxLength = 30;
1867 char location_info[kMaxLength];
1868 int page_idx = engine_->GetMostVisiblePage();
1869 if (page_idx < 0)
1870 return pp::Var(std::string());
1871 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1872 int v_scrollbar_reserved_thickness =
1873 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1874
1875 rect.set_x(rect.x() + ((plugin_size_.width() -
1876 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1877 base::snprintf(location_info,
1878 kMaxLength,
1879 "%0.4f;%0.4f;%0.4f;%0.4f;",
1880 rect.x() / static_cast<float>(plugin_size_.width()),
1881 rect.y() / static_cast<float>(plugin_size_.height()),
1882 rect.width() / static_cast<float>(plugin_size_.width()),
1883 rect.height()/ static_cast<float>(plugin_size_.height()));
1884 return pp::Var(std::string(location_info));
1885 }
1886 if (method_str == kJSSetPageNumbers) {
1887 if (args.size() != 1 || !args[0].is_string())
1888 return pp::Var();
1889 const int num_pages_signed = engine_->GetNumberOfPages();
1890 if (num_pages_signed <= 0)
1891 return pp::Var();
1892 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1893 base::JSONReader::Read(args[0].AsString(), false)));
1894 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1895 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1896 return pp::Var();
1897
1898 std::vector<int> print_preview_page_numbers;
1899 for (size_t index = 0; index < num_pages; ++index) {
1900 int page_number = 0; // |page_number| is 1-based.
1901 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1902 return pp::Var();
1903 print_preview_page_numbers.push_back(page_number);
1904 }
1905 print_preview_page_numbers_ = print_preview_page_numbers;
1906 page_indicator_.set_current_page(GetPageNumberToDisplay());
1907 return pp::Var();
1908 }
1909 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1910 // In JS, creating a synthetic keyboard event and dispatching it always
1911 // result in a keycode of 0.
1912 if (method_str == kJSSendKeyEvent) {
1913 if (args.size() == 1 && args[0].is_number()) {
1914 pp::KeyboardInputEvent event(
1915 this, // instance
1916 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1917 0, // timestamp, not used for kbd events.
1918 0, // no modifiers.
1919 args[0].AsInt(), // keycode.
1920 pp::Var()); // no char text needed.
1921 HandleInputEvent(event);
1922 }
1923 }
1924 return pp::Var();
1925 }
1926
1927 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1928 bool force_no_horizontal_scrollbar = false;
1929 int scrollbar_thickness = GetScrollbarThickness();
1930
1931 if (old_device_scale != device_scale_) {
1932 // Change in device scale forces us to recreate resources
1933 ConfigureNumberImageGenerator();
1934
1935 CreateToolbar(current_tb_info_, current_tb_info_size_);
1936 // Load autoscroll anchor image.
1937 autoscroll_anchor_ =
1938 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1939
1940 ConfigurePageIndicator();
1941 ConfigureProgressBar();
1942
1943 pp::Point scroll_position = engine_->GetScrollPosition();
1944 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1945 engine_->SetScrollPosition(scroll_position);
1946 }
1947
1948 UpdateZoomScale();
1949 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1950 engine_->ZoomUpdated(zoom_ * device_scale_);
1951 if (zoom_ != old_zoom)
1952 ZoomChanged(zoom_);
1953
1954 available_area_ = pp::Rect(plugin_size_);
1955 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1956 CreateVerticalScrollbar();
1957 } else {
1958 DestroyVerticalScrollbar();
1959 }
1960
1961 int v_scrollbar_reserved_thickness =
1962 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1963
1964 if (!force_no_horizontal_scrollbar &&
1965 GetDocumentPixelWidth() >
1966 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1967 CreateHorizontalScrollbar();
1968
1969 // Adding the horizontal scrollbar now might cause us to need vertical
1970 // scrollbars.
1971 if (GetDocumentPixelHeight() >
1972 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1973 CreateVerticalScrollbar();
1974 }
1975
1976 } else {
1977 DestroyHorizontalScrollbar();
1978 }
1979
1980 #ifdef ENABLE_THUMBNAILS
1981 int thumbnails_pos = 0, thumbnails_total = 0;
1982 #endif
1983 if (v_scrollbar_.get()) {
1984 v_scrollbar_->SetScale(device_scale_);
1985 available_area_.set_width(
1986 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
1987
1988 #ifdef ENABLE_THUMBNAILS
1989 int height = plugin_size_.height();
1990 #endif
1991 int height_dip = plugin_dip_size_.height();
1992
1993 #if defined(OS_MACOSX)
1994 // Before Lion, Mac always had the resize at the bottom. After that, it
1995 // never did.
1996 if ((base::mac::IsOSSnowLeopard() && full_) ||
1997 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
1998 #else
1999 if (h_scrollbar_.get()) {
2000 #endif // defined(OS_MACOSX)
2001 #ifdef ENABLE_THUMBNAILS
2002 height -= GetScaled(GetScrollbarThickness());
2003 #endif
2004 height_dip -= GetScrollbarThickness();
2005 }
2006 #ifdef ENABLE_THUMBNAILS
2007 int32 doc_height = GetDocumentPixelHeight();
2008 #endif
2009 int32 doc_height_dip =
2010 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2011 #if defined(OS_MACOSX)
2012 // On the Mac we always allow room for the resize button (whose width is
2013 // the same as that of the scrollbar) in full mode. However, if there is no
2014 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2015 // end of the document. This is because the scrollbar assumes that its own
2016 // height (in the case of a vscroll bar) is the same as the height of the
2017 // viewport. Since the viewport is actually larger, we compensate by
2018 // adjusting the document height. Similar logic applies below for the
2019 // horizontal scrollbar.
2020 // For example, if the document size is 1000, and the viewport size is 200,
2021 // then the scrollbar position at the end will be 800. In this case the
2022 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2023 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2024 // be 785. Making the document size 985 achieves this.
2025 if (full_ && !h_scrollbar_.get()) {
2026 #ifdef ENABLE_THUMBNAILS
2027 doc_height -= GetScaled(GetScrollbarThickness());
2028 #endif
2029 doc_height_dip -= GetScrollbarThickness();
2030 }
2031 #endif // defined(OS_MACOSX)
2032
2033 int32 position;
2034 position = v_scrollbar_->GetValue();
2035 position = static_cast<int>(position * zoom_ / old_zoom);
2036 valid_v_range_ = doc_height_dip - height_dip;
2037 if (position > valid_v_range_)
2038 position = valid_v_range_;
2039
2040 v_scrollbar_->SetValue(position);
2041
2042 PP_Rect loc;
2043 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2044 if (IsOverlayScrollbar())
2045 loc.point.x -= scrollbar_thickness;
2046 loc.point.y = 0;
2047 loc.size.width = scrollbar_thickness;
2048 loc.size.height = height_dip;
2049 v_scrollbar_->SetLocation(loc);
2050 v_scrollbar_->SetDocumentSize(doc_height_dip);
2051
2052 #ifdef ENABLE_THUMBNAILS
2053 thumbnails_pos = position;
2054 thumbnails_total = doc_height - height;
2055 #endif
2056 }
2057
2058 if (h_scrollbar_.get()) {
2059 h_scrollbar_->SetScale(device_scale_);
2060 available_area_.set_height(
2061 std::max(0, plugin_size_.height() -
2062 GetScaled(GetScrollbarReservedThickness())));
2063
2064 int width_dip = plugin_dip_size_.width();
2065
2066 // See note above.
2067 #if defined(OS_MACOSX)
2068 if ((base::mac::IsOSSnowLeopard() && full_) ||
2069 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2070 #else
2071 if (v_scrollbar_.get()) {
2072 #endif
2073 width_dip -= GetScrollbarThickness();
2074 }
2075 int32 doc_width_dip =
2076 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2077 #if defined(OS_MACOSX)
2078 // See comment in the above if (v_scrollbar_.get()) block.
2079 if (full_ && !v_scrollbar_.get())
2080 doc_width_dip -= GetScrollbarThickness();
2081 #endif // defined(OS_MACOSX)
2082
2083 int32 position;
2084 position = h_scrollbar_->GetValue();
2085 position = static_cast<int>(position * zoom_ / old_zoom);
2086 position = std::min(position, doc_width_dip - width_dip);
2087
2088 h_scrollbar_->SetValue(position);
2089
2090 PP_Rect loc;
2091 loc.point.x = 0;
2092 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2093 if (IsOverlayScrollbar())
2094 loc.point.y -= scrollbar_thickness;
2095 loc.size.width = width_dip;
2096 loc.size.height = scrollbar_thickness;
2097 h_scrollbar_->SetLocation(loc);
2098 h_scrollbar_->SetDocumentSize(doc_width_dip);
2099 }
2100
2101 int doc_width = GetDocumentPixelWidth();
2102 if (doc_width < available_area_.width()) {
2103 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2104 available_area_.set_width(doc_width);
2105 }
2106 int doc_height = GetDocumentPixelHeight();
2107 if (doc_height < available_area_.height()) {
2108 available_area_.set_height(doc_height);
2109 }
2110
2111 // We'll invalidate the entire plugin anyways.
2112 UpdateToolbarPosition(false);
2113 UpdateProgressBarPosition(false);
2114 UpdatePageIndicatorPosition(false);
2115
2116 #ifdef ENABLE_THUMBNAILS
2117 // Update thumbnail control position.
2118 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2119 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2120 GetScaled(kThumbnailsWidth), plugin_size_.height());
2121 if (v_scrollbar_.get())
2122 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2123 if (h_scrollbar_.get())
2124 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2125 thumbnails_.SetRect(thumbnails_rc, false);
2126 #endif
2127
2128 CalculateBackgroundParts();
2129 engine_->PageOffsetUpdated(available_area_.point());
2130 engine_->PluginSizeUpdated(available_area_.size());
2131
2132 if (!document_size_.GetArea())
2133 return;
2134 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2135
2136 // Run the plugin size change callback asynchronously. This function can be
2137 // invoked by a layout change which should not re-enter into JS synchronously.
2138 pp::CompletionCallback callback =
2139 callback_factory_.NewCallback(&Instance::RunCallback,
2140 on_plugin_size_changed_callback_);
2141 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2142 }
2143
2144 void Instance::RunCallback(int32_t, pp::Var callback) {
2145 if (callback.is_string())
2146 ExecuteScript(callback);
2147 }
2148
2149 void Instance::CreateHorizontalScrollbar() {
2150 if (h_scrollbar_.get())
2151 return;
2152
2153 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2154 }
2155
2156 void Instance::CreateVerticalScrollbar() {
2157 if (v_scrollbar_.get())
2158 return;
2159
2160 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2161 }
2162
2163 void Instance::DestroyHorizontalScrollbar() {
2164 if (!h_scrollbar_.get())
2165 return;
2166 if (h_scrollbar_->GetValue())
2167 engine_->ScrolledToXPosition(0);
2168 h_scrollbar_.reset();
2169 }
2170
2171 void Instance::DestroyVerticalScrollbar() {
2172 if (!v_scrollbar_.get())
2173 return;
2174 if (v_scrollbar_->GetValue())
2175 engine_->ScrolledToYPosition(0);
2176 v_scrollbar_.reset();
2177 page_indicator_.Show(false, true);
2178 }
2179
2180 int Instance::GetScrollbarThickness() {
2181 if (scrollbar_thickness_ == -1) {
2182 pp::Scrollbar_Dev temp_scrollbar(this, false);
2183 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2184 scrollbar_reserved_thickness_ =
2185 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2186 }
2187
2188 return scrollbar_thickness_;
2189 }
2190
2191 int Instance::GetScrollbarReservedThickness() {
2192 GetScrollbarThickness();
2193 return scrollbar_reserved_thickness_;
2194 }
2195
2196 bool Instance::IsOverlayScrollbar() {
2197 return GetScrollbarReservedThickness() == 0;
2198 }
2199
2200 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2201 toolbar_.reset(new FadingControls());
2202
2203 DCHECK(tb_info);
2204 DCHECK(size >= 0);
2205
2206 // Remember the current toolbar information in case we need to recreate the
2207 // images later.
2208 current_tb_info_ = tb_info;
2209 current_tb_info_size_ = size;
2210
2211 int max_height = 0;
2212 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2213 ScalePoint(device_scale_, &origin);
2214
2215 std::list<Button*> buttons;
2216 for (size_t i = 0; i < size; i++) {
2217 Button* btn = new Button;
2218 pp::ImageData normal_face =
2219 CreateResourceImage(tb_info[i].normal);
2220 btn->CreateButton(tb_info[i].id,
2221 origin,
2222 true,
2223 toolbar_.get(),
2224 tb_info[i].style,
2225 normal_face,
2226 CreateResourceImage(tb_info[i].highlighted),
2227 CreateResourceImage(tb_info[i].pressed));
2228 buttons.push_back(btn);
2229
2230 origin += pp::Point(normal_face.size().width(), 0);
2231 max_height = std::max(max_height, normal_face.size().height());
2232 }
2233
2234 pp::Rect rc_toolbar(0, 0,
2235 origin.x() + GetToolbarRightOffset(),
2236 origin.y() + max_height + GetToolbarBottomOffset());
2237 toolbar_->CreateFadingControls(
2238 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2239
2240 std::list<Button*>::iterator iter;
2241 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2242 toolbar_->AddControl(*iter);
2243 }
2244 }
2245
2246 int Instance::GetToolbarRightOffset() {
2247 int scrollbar_thickness = GetScrollbarThickness();
2248 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2249 }
2250
2251 int Instance::GetToolbarBottomOffset() {
2252 int scrollbar_thickness = GetScrollbarThickness();
2253 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2254 }
2255
2256 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2257 std::vector<pp::ImageData> num_images(10);
2258 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2259 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2260 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2261 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2262 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2263 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2264 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2265 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2266 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2267 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2268 return num_images;
2269 }
2270
2271 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2272 pp::ImageData* background) {
2273 std::vector<pp::ImageData> result(9);
2274 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2275 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2276 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2277 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2278 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2279 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2280 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2281 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2282 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2283 *background = CreateResourceImage(
2284 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2285 return result;
2286 }
2287
2288 void Instance::CreatePageIndicator(bool always_visible) {
2289 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2290 number_image_generator(), always_visible);
2291 ConfigurePageIndicator();
2292 }
2293
2294 void Instance::ConfigurePageIndicator() {
2295 pp::ImageData background =
2296 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2297 page_indicator_.Configure(pp::Point(), background);
2298 }
2299
2300 void Instance::CreateProgressBar() {
2301 pp::ImageData background;
2302 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2303 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2304 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2305 device_scale_, images, background, text);
2306 }
2307
2308 void Instance::ConfigureProgressBar() {
2309 pp::ImageData background;
2310 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2311 progress_bar_.Reconfigure(background, images, device_scale_);
2312 }
2313
2314 void Instance::CreateThumbnails() {
2315 thumbnails_.CreateThumbnailControl(
2316 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2317 number_image_generator());
2318 }
2319
2320 void Instance::LoadUrl(const std::string& url) {
2321 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2322 }
2323
2324 void Instance::LoadPreviewUrl(const std::string& url) {
2325 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2326 }
2327
2328 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2329 void (Instance::* method)(int32_t)) {
2330 pp::URLRequestInfo request(this);
2331 request.SetURL(url);
2332 request.SetMethod("GET");
2333
2334 *loader = CreateURLLoaderInternal();
2335 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2336 int rv = loader->Open(request, callback);
2337 if (rv != PP_OK_COMPLETIONPENDING)
2338 callback.Run(rv);
2339 }
2340
2341 pp::URLLoader Instance::CreateURLLoaderInternal() {
2342 pp::URLLoader loader(this);
2343
2344 const PPB_URLLoaderTrusted* trusted_interface =
2345 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2346 pp::Module::Get()->GetBrowserInterface(
2347 PPB_URLLOADERTRUSTED_INTERFACE));
2348 if (trusted_interface)
2349 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2350 return loader;
2351 }
2352
2353 int Instance::GetInitialPage(const std::string& url) {
2354 size_t found_idx = url.find('#');
2355 if (found_idx == std::string::npos)
2356 return -1;
2357
2358 const std::string& ref = url.substr(found_idx + 1);
2359 std::vector<std::string> fragments;
2360 Tokenize(ref, kDelimiters, &fragments);
2361
2362 // Page number to return, zero-based.
2363 int page = -1;
2364
2365 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2366 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2367 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2368 return engine_->GetNamedDestinationPage(fragments[0]);
2369
2370 for (size_t i = 0; i < fragments.size(); ++i) {
2371 std::vector<std::string> key_value;
2372 base::SplitString(fragments[i], '=', &key_value);
2373 if (key_value.size() != 2)
2374 continue;
2375 const std::string& key = key_value[0];
2376 const std::string& value = key_value[1];
2377
2378 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2379 // |page_value| is 1-based.
2380 int page_value = -1;
2381 if (base::StringToInt(value, &page_value) && page_value > 0)
2382 page = page_value - 1;
2383 continue;
2384 }
2385 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2386 // |page_value| is 0-based.
2387 int page_value = engine_->GetNamedDestinationPage(value);
2388 if (page_value >= 0)
2389 page = page_value;
2390 continue;
2391 }
2392 }
2393 return page;
2394 }
2395
2396 void Instance::UpdateToolbarPosition(bool invalidate) {
2397 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2398 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2399 GetScaled(kToolbarFadingOffsetLeft);
2400 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2401 GetScaled(kToolbarFadingOffsetBottom);
2402
2403 // Update toolbar position
2404 if (plugin_size_.width() < min_toolbar_width ||
2405 plugin_size_.height() < min_toolbar_height) {
2406 // Disable toolbar if it does not fit on the screen.
2407 toolbar_->Show(false, invalidate);
2408 } else {
2409 pp::Point offset(
2410 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2411 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2412 toolbar_->MoveBy(offset, invalidate);
2413
2414 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2415 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2416 toolbar_->Show(painted_first_page_, invalidate);
2417 }
2418 }
2419
2420 void Instance::UpdateProgressBarPosition(bool invalidate) {
2421 // TODO(gene): verify we don't overlap with toolbar.
2422 int scrollbar_thickness = GetScrollbarThickness();
2423 pp::Point progress_origin(
2424 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2425 plugin_size_.height() - progress_bar_.rect().height() -
2426 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2427 progress_bar_.MoveTo(progress_origin, invalidate);
2428 }
2429
2430 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2431 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2432 pp::Point origin(
2433 plugin_size_.width() - page_indicator_.rect().width() -
2434 GetScaled(GetScrollbarReservedThickness()),
2435 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2436 doc_height, plugin_size_.height()));
2437 page_indicator_.MoveTo(origin, invalidate);
2438 }
2439
2440 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2441 double old_zoom = zoom_;
2442
2443 zoom_mode_ = zoom_mode;
2444 if (zoom_mode_ == ZOOM_SCALE)
2445 zoom_ = scale;
2446 UpdateZoomScale();
2447
2448 engine_->ZoomUpdated(zoom_ * device_scale_);
2449 OnGeometryChanged(old_zoom, device_scale_);
2450
2451 // If fit-to-height, snap to the beginning of the most visible page.
2452 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2453 ScrollToPage(engine_->GetMostVisiblePage());
2454 }
2455
2456 // Update sticky buttons to the current zoom style.
2457 Button* ftp_btn = static_cast<Button*>(
2458 toolbar_->GetControl(kFitToPageButtonId));
2459 Button* ftw_btn = static_cast<Button*>(
2460 toolbar_->GetControl(kFitToWidthButtonId));
2461 switch (zoom_mode_) {
2462 case ZOOM_FIT_TO_PAGE:
2463 ftp_btn->SetPressedState(true);
2464 ftw_btn->SetPressedState(false);
2465 break;
2466 case ZOOM_FIT_TO_WIDTH:
2467 ftw_btn->SetPressedState(true);
2468 ftp_btn->SetPressedState(false);
2469 break;
2470 default:
2471 ftw_btn->SetPressedState(false);
2472 ftp_btn->SetPressedState(false);
2473 }
2474 }
2475
2476 void Instance::UpdateZoomScale() {
2477 switch (zoom_mode_) {
2478 case ZOOM_SCALE:
2479 break; // Keep current scale.
2480 case ZOOM_FIT_TO_PAGE: {
2481 int page_num = engine_->GetFirstVisiblePage();
2482 if (page_num == -1)
2483 break;
2484 pp::Rect rc = engine_->GetPageRect(page_num);
2485 if (!rc.height())
2486 break;
2487 // Calculate fit to width zoom level.
2488 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2489 GetScrollbarReservedThickness()) / document_size_.width();
2490 // Calculate fit to height zoom level. If document will not fit
2491 // horizontally, adjust zoom level to allow space for horizontal
2492 // scrollbar.
2493 double fth_zoom =
2494 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2495 if (fth_zoom * document_size_.width() >
2496 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2497 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2498 - GetScrollbarReservedThickness()) / rc.height();
2499 zoom_ = std::min(ftw_zoom, fth_zoom);
2500 } break;
2501 case ZOOM_FIT_TO_WIDTH:
2502 case ZOOM_AUTO:
2503 if (!document_size_.width())
2504 break;
2505 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2506 GetScrollbarReservedThickness()) / document_size_.width();
2507 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2508 zoom_ = 1.0;
2509 break;
2510 }
2511 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2512 }
2513
2514 double Instance::CalculateZoom(uint32 control_id) const {
2515 if (control_id == kZoomInButtonId) {
2516 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2517 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2518 if (current_zoom - content::kEpsilon > zoom_)
2519 return current_zoom;
2520 }
2521 } else {
2522 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2523 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2524 if (current_zoom + content::kEpsilon < zoom_)
2525 return current_zoom;
2526 }
2527 }
2528 return zoom_;
2529 }
2530
2531 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2532 pp::ImageData resource_data;
2533 if (hidpi_enabled_) {
2534 resource_data =
2535 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2536 }
2537
2538 return resource_data.data() ? resource_data
2539 : pp::PDF::GetResourceImage(this, image_id);
2540 }
2541
2542 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2543 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2544 if (!rv.is_string())
2545 return std::string();
2546
2547 return rv.AsString();
2548 }
2549
2550 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2551 std::string str(GetLocalizedString(id));
2552
2553 pp::FontDescription_Dev description;
2554 description.set_family(PP_FONTFAMILY_SANSSERIF);
2555 description.set_size(kMessageTextSize * device_scale_);
2556 pp::Font_Dev font(this, description);
2557 int length = font.MeasureSimpleText(str);
2558 pp::Point point(top_center);
2559 point.set_x(point.x() - length / 2);
2560 DCHECK(!image_data_.is_null());
2561 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2562 }
2563
2564 void Instance::SetPrintPreviewMode(int page_count) {
2565 if (!IsPrintPreview() || page_count <= 0) {
2566 print_preview_page_count_ = 0;
2567 return;
2568 }
2569
2570 print_preview_page_count_ = page_count;
2571 ScrollToPage(0);
2572 engine_->AppendBlankPages(print_preview_page_count_);
2573 if (preview_pages_info_.size() > 0)
2574 LoadAvailablePreviewPage();
2575 }
2576
2577 bool Instance::IsPrintPreview() {
2578 return IsPrintPreviewUrl(url_);
2579 }
2580
2581 int Instance::GetPageNumberToDisplay() {
2582 int page = engine_->GetMostVisiblePage();
2583 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2584 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2585 return print_preview_page_numbers_[page];
2586 }
2587 return page + 1;
2588 }
2589
2590 void Instance::ProcessPreviewPageInfo(const std::string& url,
2591 int dst_page_index) {
2592 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2593 return;
2594
2595 int src_page_index = ExtractPrintPreviewPageIndex(url);
2596 if (src_page_index < 1)
2597 return;
2598
2599 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2600 LoadAvailablePreviewPage();
2601 }
2602
2603 void Instance::LoadAvailablePreviewPage() {
2604 if (preview_pages_info_.size() <= 0)
2605 return;
2606
2607 std::string url = preview_pages_info_.front().first;
2608 int dst_page_index = preview_pages_info_.front().second;
2609 int src_page_index = ExtractPrintPreviewPageIndex(url);
2610 if (src_page_index < 1 ||
2611 dst_page_index >= print_preview_page_count_ ||
2612 preview_document_load_state_ == LOAD_STATE_LOADING) {
2613 return;
2614 }
2615
2616 preview_document_load_state_ = LOAD_STATE_LOADING;
2617 LoadPreviewUrl(url);
2618 }
2619
2620 void Instance::EnableAutoscroll(const pp::Point& origin) {
2621 if (is_autoscroll_)
2622 return;
2623
2624 pp::Size client_size = plugin_size_;
2625 if (v_scrollbar_.get())
2626 client_size.Enlarge(-GetScrollbarThickness(), 0);
2627 if (h_scrollbar_.get())
2628 client_size.Enlarge(0, -GetScrollbarThickness());
2629
2630 // Do not allow autoscroll if client area is too small.
2631 if (autoscroll_anchor_.size().width() > client_size.width() ||
2632 autoscroll_anchor_.size().height() > client_size.height())
2633 return;
2634
2635 autoscroll_rect_ = pp::Rect(
2636 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2637 origin.y() - autoscroll_anchor_.size().height() / 2),
2638 autoscroll_anchor_.size());
2639
2640 // Make sure autoscroll anchor is in the client area.
2641 if (autoscroll_rect_.right() > client_size.width()) {
2642 autoscroll_rect_.set_x(
2643 client_size.width() - autoscroll_anchor_.size().width());
2644 }
2645 if (autoscroll_rect_.bottom() > client_size.height()) {
2646 autoscroll_rect_.set_y(
2647 client_size.height() - autoscroll_anchor_.size().height());
2648 }
2649
2650 if (autoscroll_rect_.x() < 0)
2651 autoscroll_rect_.set_x(0);
2652 if (autoscroll_rect_.y() < 0)
2653 autoscroll_rect_.set_y(0);
2654
2655 is_autoscroll_ = true;
2656 Invalidate(kAutoScrollId, autoscroll_rect_);
2657
2658 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2659 }
2660
2661 void Instance::DisableAutoscroll() {
2662 if (is_autoscroll_) {
2663 is_autoscroll_ = false;
2664 Invalidate(kAutoScrollId, autoscroll_rect_);
2665 }
2666 }
2667
2668 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2669 // Scroll only if mouse pointer is outside of the anchor area.
2670 if (autoscroll_rect_.Contains(mouse_pos)) {
2671 autoscroll_x_ = 0;
2672 autoscroll_y_ = 0;
2673 return PP_CURSORTYPE_MIDDLEPANNING;
2674 }
2675
2676 // Relative position to the center of anchor area.
2677 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2678
2679 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2680 double angle = atan2(static_cast<double>(rel_pos.y()),
2681 static_cast<double>(rel_pos.x()));
2682
2683 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2684 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2685
2686 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2687 // so negative angle represent north direction.
2688 if (angle < - (M_PI * 7.0 / 8.0)) {
2689 // going west
2690 return PP_CURSORTYPE_WESTPANNING;
2691 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2692 // going north-west
2693 return PP_CURSORTYPE_NORTHWESTPANNING;
2694 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2695 // going north.
2696 return PP_CURSORTYPE_NORTHPANNING;
2697 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2698 // going north-east
2699 return PP_CURSORTYPE_NORTHEASTPANNING;
2700 } else if (angle < M_PI * 1.0 / 8.0) {
2701 // going east.
2702 return PP_CURSORTYPE_EASTPANNING;
2703 } else if (angle < M_PI * 3.0 / 8.0) {
2704 // going south-east
2705 return PP_CURSORTYPE_SOUTHEASTPANNING;
2706 } else if (angle < M_PI * 5.0 / 8.0) {
2707 // going south.
2708 return PP_CURSORTYPE_SOUTHPANNING;
2709 } else if (angle < M_PI * 7.0 / 8.0) {
2710 // going south-west
2711 return PP_CURSORTYPE_SOUTHWESTPANNING;
2712 }
2713
2714 // went around the circle, going west again
2715 return PP_CURSORTYPE_WESTPANNING;
2716 }
2717
2718 void Instance::ConfigureNumberImageGenerator() {
2719 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2720 pp::ImageData number_background = CreateResourceImage(
2721 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2722 number_image_generator_->Configure(number_background,
2723 num_images,
2724 device_scale_);
2725 }
2726
2727 NumberImageGenerator* Instance::number_image_generator() {
2728 if (!number_image_generator_.get()) {
2729 number_image_generator_.reset(new NumberImageGenerator(this));
2730 ConfigureNumberImageGenerator();
2731 }
2732 return number_image_generator_.get();
2733 }
2734
2735 int Instance::GetScaled(int x) const {
2736 return static_cast<int>(x * device_scale_);
2737 }
2738
2739 void Instance::UserMetricsRecordAction(const std::string& action) {
2740 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2741 }
2742
2743 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2744 : instance_(instance) {
2745 }
2746
2747 PDFScriptableObject::~PDFScriptableObject() {
2748 }
2749
2750 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2751 return instance_->HasScriptableMethod(name, exception);
2752 }
2753
2754 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2755 const std::vector<pp::Var>& args,
2756 pp::Var* exception) {
2757 return instance_->CallScriptableMethod(method, args, exception);
2758 }
2759
2760 } // namespace chrome_pdf