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Mark two tests in ImeTest.java as flaky
[chromium-blink-merge.git] / pdf / instance.cc
blob90370af88f9baef5535247471b6b78e07f93cbb1
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 kJSGetSelectedText[] = "getSelectedText";
80 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
81 const char kJSGetWidth[] = "getWidth";
82 const char kJSGetZoomLevel[] = "getZoomLevel";
83 const char kJSGoToPage[] = "goToPage";
84 const char kJSGrayscale[] = "grayscale";
85 const char kJSLoadPreviewPage[] = "loadPreviewPage";
86 const char kJSOnLoad[] = "onload";
87 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
88 const char kJSOnScroll[] = "onScroll";
89 const char kJSPageXOffset[] = "pageXOffset";
90 const char kJSPageYOffset[] = "pageYOffset";
91 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
92 const char kJSReload[] = "reload";
93 const char kJSRemovePrintButton[] = "removePrintButton";
94 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
95 const char kJSSendKeyEvent[] = "sendKeyEvent";
96 const char kJSSetPageNumbers[] = "setPageNumbers";
97 const char kJSSetPageXOffset[] = "setPageXOffset";
98 const char kJSSetPageYOffset[] = "setPageYOffset";
99 const char kJSSetZoomLevel[] = "setZoomLevel";
100 const char kJSZoomFitToHeight[] = "fitToHeight";
101 const char kJSZoomFitToWidth[] = "fitToWidth";
102 const char kJSZoomIn[] = "zoomIn";
103 const char kJSZoomOut[] = "zoomOut";
104
105 // URL reference parameters.
106 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
107 // document from Adobe.
108 const char kDelimiters[] = "#&";
109 const char kNamedDest[] = "nameddest";
110 const char kPage[] = "page";
111
112 const char kChromePrint[] = "chrome://print/";
113
114 // Dictionary Value key names for the document accessibility info
115 const char kAccessibleNumberOfPages[] = "numberOfPages";
116 const char kAccessibleLoaded[] = "loaded";
117 const char kAccessibleCopyable[] = "copyable";
118
119 const ToolbarButtonInfo kPDFToolbarButtons[] = {
120 { kFitToPageButtonId, Button::BUTTON_STATE,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
124 { kFitToWidthButtonId, Button::BUTTON_STATE,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
128 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
132 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
136 { kSaveButtonId, Button::BUTTON_CLICKABLE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
140 { kPrintButtonId, Button::BUTTON_CLICKABLE,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
144 };
145
146 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
147 { kFitToPageButtonId, Button::BUTTON_STATE,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
151 { kFitToWidthButtonId, Button::BUTTON_STATE,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
155 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
159 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
163 { kSaveButtonId, Button::BUTTON_CLICKABLE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
167 { kPrintButtonId, Button::BUTTON_CLICKABLE,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
171 };
172
173 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
174 { kFitToPageButtonId, Button::BUTTON_STATE,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
178 { kFitToWidthButtonId, Button::BUTTON_STATE,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
182 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
186 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
190 };
191
192 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
193
194 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
195 pp::Var var;
196 void* object =
197 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
198 if (object)
199 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
200 return var.Detach();
201 }
202
203 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
204 void* object =
205 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
206 if (object) {
207 Instance* obj_instance = static_cast<Instance*>(object);
208 switch (type) {
209 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
210 obj_instance->RotateClockwise();
211 break;
212 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
213 obj_instance->RotateCounterclockwise();
214 break;
215 }
216 }
217 }
218
219 PP_Bool GetPrintPresetOptionsFromDocument(
220 PP_Instance instance,
221 PP_PdfPrintPresetOptions_Dev* options) {
222 void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
223 if (object) {
224 Instance* obj_instance = static_cast<Instance*>(object);
225 obj_instance->GetPrintPresetOptionsFromDocument(options);
226 }
227 return PP_TRUE;
228 }
229
230 const PPP_Pdf ppp_private = {
231 &GetLinkAtPosition,
232 &Transform,
233 &GetPrintPresetOptionsFromDocument
234 };
235
236 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
237 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
238 std::vector<std::string> url_substr;
239 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
240 if (url_substr.size() != 3)
241 return -1;
242
243 if (url_substr[2] != "print.pdf")
244 return -1;
245
246 int page_index = 0;
247 if (!base::StringToInt(url_substr[1], &page_index))
248 return -1;
249 return page_index;
250 }
251
252 bool IsPrintPreviewUrl(const std::string& url) {
253 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
254 }
255
256 void ScalePoint(float scale, pp::Point* point) {
257 point->set_x(static_cast<int>(point->x() * scale));
258 point->set_y(static_cast<int>(point->y() * scale));
259 }
260
261 void ScaleRect(float scale, pp::Rect* rect) {
262 int left = static_cast<int>(floorf(rect->x() * scale));
263 int top = static_cast<int>(floorf(rect->y() * scale));
264 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
265 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
266 rect->SetRect(left, top, right - left, bottom - top);
267 }
268
269 template<class T>
270 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
271 DCHECK(lower_boundary <= upper_boundary);
272 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
273 }
274
275 } // namespace
276
277 Instance::Instance(PP_Instance instance)
278 : pp::InstancePrivate(instance),
279 pp::Find_Private(this),
280 pp::Printing_Dev(this),
281 pp::Selection_Dev(this),
282 pp::WidgetClient_Dev(this),
283 pp::Zoom_Dev(this),
284 cursor_(PP_CURSORTYPE_POINTER),
285 timer_pending_(false),
286 current_timer_id_(0),
287 zoom_(1.0),
288 device_scale_(1.0),
289 printing_enabled_(true),
290 hidpi_enabled_(false),
291 full_(IsFullFrame()),
292 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
293 did_call_start_loading_(false),
294 is_autoscroll_(false),
295 scrollbar_thickness_(-1),
296 scrollbar_reserved_thickness_(-1),
297 current_tb_info_(NULL),
298 current_tb_info_size_(0),
299 paint_manager_(this, this, true),
300 delayed_progress_timer_id_(0),
301 first_paint_(true),
302 painted_first_page_(false),
303 show_page_indicator_(false),
304 document_load_state_(LOAD_STATE_LOADING),
305 preview_document_load_state_(LOAD_STATE_COMPLETE),
306 told_browser_about_unsupported_feature_(false),
307 print_preview_page_count_(0) {
308 loader_factory_.Initialize(this);
309 timer_factory_.Initialize(this);
310 form_factory_.Initialize(this);
311 callback_factory_.Initialize(this);
312 engine_.reset(PDFEngine::Create(this));
313 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
314 AddPerInstanceObject(kPPPPdfInterface, this);
315
316 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
317 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
318 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
319 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
320 }
321
322 Instance::~Instance() {
323 if (timer_pending_) {
324 timer_factory_.CancelAll();
325 timer_pending_ = false;
326 }
327 // The engine may try to access this instance during its destruction.
328 // Make sure this happens early while the instance is still intact.
329 engine_.reset();
330 RemovePerInstanceObject(kPPPPdfInterface, this);
331 }
332
333 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
334 // For now, we hide HiDPI support behind a flag.
335 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
336 hidpi_enabled_ = true;
337
338 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
339 if (printing_enabled_) {
340 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
341 } else {
342 CreateToolbar(kPDFNoPrintToolbarButtons,
343 arraysize(kPDFNoPrintToolbarButtons));
344 }
345
346 CreateProgressBar();
347
348 // Load autoscroll anchor image.
349 autoscroll_anchor_ =
350 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
351
352 #ifdef ENABLE_THUMBNAILS
353 CreateThumbnails();
354 #endif
355 const char* url = NULL;
356 for (uint32_t i = 0; i < argc; ++i) {
357 if (strcmp(argn[i], "src") == 0) {
358 url = argv[i];
359 break;
360 }
361 }
362
363 if (!url)
364 return false;
365
366 CreatePageIndicator(IsPrintPreviewUrl(url));
367
368 if (!full_) {
369 // For PDFs embedded in a frame, we don't get the data automatically like we
370 // do for full-frame loads. Start loading the data manually.
371 LoadUrl(url);
372 } else {
373 DCHECK(!did_call_start_loading_);
374 pp::PDF::DidStartLoading(this);
375 did_call_start_loading_ = true;
376 }
377
378 ZoomLimitsChanged(kMinZoom, kMaxZoom);
379
380 text_input_.reset(new pp::TextInput_Dev(this));
381
382 url_ = url;
383 return engine_->New(url);
384 }
385
386 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
387 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
388 kProgressDelayTimeoutMs);
389 return engine_->HandleDocumentLoad(loader);
390 }
391
392 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
393 // To simplify things, convert the event into device coordinates if it is
394 // a mouse event.
395 pp::InputEvent event_device_res(event);
396 {
397 pp::MouseInputEvent mouse_event(event);
398 if (!mouse_event.is_null()) {
399 pp::Point point = mouse_event.GetPosition();
400 pp::Point movement = mouse_event.GetMovement();
401 ScalePoint(device_scale_, &point);
402 ScalePoint(device_scale_, &movement);
403 mouse_event = pp::MouseInputEvent(
404 this,
405 event.GetType(),
406 event.GetTimeStamp(),
407 event.GetModifiers(),
408 mouse_event.GetButton(),
409 point,
410 mouse_event.GetClickCount(),
411 movement);
412 event_device_res = mouse_event;
413 }
414 }
415
416 // Check if we need to go to autoscroll mode.
417 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
418 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
419 pp::MouseInputEvent mouse_event(event_device_res);
420 pp::Point pos = mouse_event.GetPosition();
421 EnableAutoscroll(pos);
422 UpdateCursor(CalculateAutoscroll(pos));
423 return true;
424 } else {
425 // Quit autoscrolling on any other event.
426 DisableAutoscroll();
427 }
428
429 #ifdef ENABLE_THUMBNAILS
430 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
431 thumbnails_.SlideOut();
432
433 if (thumbnails_.HandleEvent(event_device_res))
434 return true;
435 #endif
436
437 if (toolbar_->HandleEvent(event_device_res))
438 return true;
439
440 #ifdef ENABLE_THUMBNAILS
441 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
442 pp::MouseInputEvent mouse_event(event);
443 pp::Point pt = mouse_event.GetPosition();
444 pp::Rect v_scrollbar_rc;
445 v_scrollbar_->GetLocation(&v_scrollbar_rc);
446 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
447 // in the webkit that makes event.u.mouse.button
448 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
449 // To work around this issue we use modifier for now, and will switch
450 // to button once the bug is fixed and webkit got merged back to our tree.
451 if (v_scrollbar_rc.Contains(pt) &&
452 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
453 thumbnails_.SlideIn();
454 }
455
456 // When scrollbar is in the scrolling mode we should display thumbnails
457 // even the mouse is outside the thumbnail and scrollbar areas.
458 // If mouse is outside plugin area, we are still getting mouse move events
459 // while scrolling. See bug description for details:
460 // http://code.google.com/p/chromium/issues/detail?id=56444
461 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
462 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
463 !thumbnails_.rect().Contains(pt)) {
464 thumbnails_.SlideOut();
465 }
466 }
467 #endif
468
469 // Need to pass the event to the engine first, since if we're over an edit
470 // control we want it to get keyboard events (like space) instead of the
471 // scrollbar.
472 // TODO: will have to offset the mouse coordinates once we support bidi and
473 // there could be scrollbars on the left.
474 pp::InputEvent offset_event(event_device_res);
475 bool try_engine_first = true;
476 switch (offset_event.GetType()) {
477 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
478 case PP_INPUTEVENT_TYPE_MOUSEUP:
479 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
480 case PP_INPUTEVENT_TYPE_MOUSEENTER:
481 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
482 pp::MouseInputEvent mouse_event(event_device_res);
483 pp::MouseInputEvent mouse_event_dip(event);
484 pp::Point point = mouse_event.GetPosition();
485 point.set_x(point.x() - available_area_.x());
486 offset_event = pp::MouseInputEvent(
487 this,
488 event.GetType(),
489 event.GetTimeStamp(),
490 event.GetModifiers(),
491 mouse_event.GetButton(),
492 point,
493 mouse_event.GetClickCount(),
494 mouse_event.GetMovement());
495 if (!engine_->IsSelecting()) {
496 if (!IsOverlayScrollbar() &&
497 !available_area_.Contains(mouse_event.GetPosition())) {
498 try_engine_first = false;
499 } else if (IsOverlayScrollbar()) {
500 pp::Rect temp;
501 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
502 temp.Contains(mouse_event_dip.GetPosition())) ||
503 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
504 temp.Contains(mouse_event_dip.GetPosition()))) {
505 try_engine_first = false;
506 }
507 }
508 }
509 break;
510 }
511 default:
512 break;
513 }
514 if (try_engine_first && engine_->HandleEvent(offset_event))
515 return true;
516
517 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
518 // there is no horizontal scroll bar.
519 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
520 // Prev/Next page. Spacebar / shift+spacebar should do the same.
521 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
522 pp::KeyboardInputEvent keyboard_event(event);
523 bool no_h_scrollbar = !h_scrollbar_.get();
524 uint32_t key_code = keyboard_event.GetKeyCode();
525 bool has_modifiers = keyboard_event.GetModifiers() != 0;
526 bool page_down =
527 no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_RIGHT;
528 bool page_up =
529 no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_LEFT;
530 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
531 bool has_shift =
532 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
533 bool key_is_space = key_code == ui::VKEY_SPACE;
534 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
535 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
536 }
537 if (page_down) {
538 int page = engine_->GetFirstVisiblePage();
539 if (page == -1)
540 return true;
541 // Engine calculates visible page including delimiter to the page size.
542 // We need to check here if the page itself is completely out of view and
543 // scroll to the next one in that case.
544 if (engine_->GetPageRect(page).bottom() * zoom_ <=
545 v_scrollbar_->GetValue())
546 page++;
547 ScrollToPage(page + 1);
548 UpdateCursor(PP_CURSORTYPE_POINTER);
549 return true;
550 } else if (page_up) {
551 int page = engine_->GetFirstVisiblePage();
552 if (page == -1)
553 return true;
554 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
555 page--;
556 ScrollToPage(page);
557 UpdateCursor(PP_CURSORTYPE_POINTER);
558 return true;
559 }
560 }
561
562 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
563 UpdateCursor(PP_CURSORTYPE_POINTER);
564 return true;
565 }
566
567 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
568 UpdateCursor(PP_CURSORTYPE_POINTER);
569 return true;
570 }
571
572 if (timer_pending_ &&
573 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
574 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
575 timer_factory_.CancelAll();
576 timer_pending_ = false;
577 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
578 engine_->IsSelecting()) {
579 bool set_timer = false;
580 pp::MouseInputEvent mouse_event(event);
581 if (v_scrollbar_.get() &&
582 (mouse_event.GetPosition().y() <= 0 ||
583 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
584 v_scrollbar_->ScrollBy(
585 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
586 set_timer = true;
587 }
588 if (h_scrollbar_.get() &&
589 (mouse_event.GetPosition().x() <= 0 ||
590 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
591 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
592 mouse_event.GetPosition().x() >= 0 ? 1: -1);
593 set_timer = true;
594 }
595
596 if (set_timer) {
597 last_mouse_event_ = pp::MouseInputEvent(event);
598
599 pp::CompletionCallback callback =
600 timer_factory_.NewCallback(&Instance::OnTimerFired);
601 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
602 timer_pending_ = true;
603 }
604 }
605
606 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
607 pp::KeyboardInputEvent keyboard_event(event);
608 const uint32 modifier = event.GetModifiers();
609 if (modifier & kDefaultKeyModifier) {
610 switch (keyboard_event.GetKeyCode()) {
611 case 'A':
612 engine_->SelectAll();
613 return true;
614 }
615 }
616 if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
617 switch (keyboard_event.GetKeyCode()) {
618 case ui::VKEY_OEM_4:
619 // Left bracket.
620 engine_->RotateCounterclockwise();
621 return true;
622 case ui::VKEY_OEM_6:
623 // Right bracket.
624 engine_->RotateClockwise();
625 return true;
626 }
627 }
628 }
629
630 // Return true for unhandled clicks so the plugin takes focus.
631 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
632 }
633
634 void Instance::DidChangeView(const pp::View& view) {
635 pp::Rect view_rect(view.GetRect());
636 float device_scale = 1.0f;
637 float old_device_scale = device_scale_;
638 if (hidpi_enabled_)
639 device_scale = view.GetDeviceScale();
640 pp::Size view_device_size(view_rect.width() * device_scale,
641 view_rect.height() * device_scale);
642 if (view_device_size == plugin_size_ && device_scale == device_scale_)
643 return; // We don't care about the position, only the size.
644
645 image_data_ = pp::ImageData();
646 device_scale_ = device_scale;
647 plugin_dip_size_ = view_rect.size();
648 plugin_size_ = view_device_size;
649
650 paint_manager_.SetSize(view_device_size, device_scale_);
651
652 image_data_ = pp::ImageData(this,
653 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
654 plugin_size_,
655 false);
656 if (image_data_.is_null()) {
657 DCHECK(plugin_size_.IsEmpty());
658 return;
659 }
660
661 // View dimensions changed, disable autoscroll (if it was enabled).
662 DisableAutoscroll();
663
664 OnGeometryChanged(zoom_, old_device_scale);
665 }
666
667 pp::Var Instance::GetInstanceObject() {
668 if (instance_object_.is_undefined()) {
669 PDFScriptableObject* object = new PDFScriptableObject(this);
670 // The pp::Var takes ownership of object here.
671 instance_object_ = pp::VarPrivate(this, object);
672 }
673
674 return instance_object_;
675 }
676
677 void Instance::GetPrintPresetOptionsFromDocument(
678 PP_PdfPrintPresetOptions_Dev* options) {
679 options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
680 options->copies = engine_->GetCopiesToPrint();
681 }
682
683 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
684 pp::Point offset_point(point);
685 ScalePoint(device_scale_, &offset_point);
686 offset_point.set_x(offset_point.x() - available_area_.x());
687 return engine_->GetLinkAtPosition(offset_point);
688 }
689
690 pp::Var Instance::GetSelectedText(bool html) {
691 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
692 return pp::Var();
693 return engine_->GetSelectedText();
694 }
695
696 void Instance::InvalidateWidget(pp::Widget_Dev widget,
697 const pp::Rect& dirty_rect) {
698 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
699 if (!image_data_.is_null())
700 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
701 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
702 if (!image_data_.is_null())
703 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
704 } else {
705 // Possible to hit this condition since sometimes the scrollbar codes posts
706 // a task to do something later, and we could have deleted our reference in
707 // the meantime.
708 return;
709 }
710
711 pp::Rect dirty_rect_scaled = dirty_rect;
712 ScaleRect(device_scale_, &dirty_rect_scaled);
713 paint_manager_.InvalidateRect(dirty_rect_scaled);
714 }
715
716 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
717 uint32_t value) {
718 value = GetScaled(value);
719 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
720 engine_->ScrolledToYPosition(value);
721 pp::Rect rc;
722 v_scrollbar_->GetLocation(&rc);
723 int32 doc_height = GetDocumentPixelHeight();
724 doc_height -= GetScaled(rc.height());
725 #ifdef ENABLE_THUMBNAILS
726 if (thumbnails_.visible()) {
727 thumbnails_.SetPosition(value, doc_height, true);
728 }
729 #endif
730 pp::Point origin(
731 plugin_size_.width() - page_indicator_.rect().width() -
732 GetScaled(GetScrollbarReservedThickness()),
733 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
734 page_indicator_.MoveTo(origin, page_indicator_.visible());
735 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
736 engine_->ScrolledToXPosition(value);
737 }
738 }
739
740 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
741 bool overlay) {
742 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
743 OnGeometryChanged(zoom_, device_scale_);
744 }
745
746 uint32_t Instance::QuerySupportedPrintOutputFormats() {
747 return engine_->QuerySupportedPrintOutputFormats();
748 }
749
750 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
751 // For us num_pages is always equal to the number of pages in the PDF
752 // document irrespective of the printable area.
753 int32_t ret = engine_->GetNumberOfPages();
754 if (!ret)
755 return 0;
756
757 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
758 if ((print_settings.format & supported_formats) == 0)
759 return 0;
760
761 print_settings_.is_printing = true;
762 print_settings_.pepper_print_settings = print_settings;
763 engine_->PrintBegin();
764 return ret;
765 }
766
767 pp::Resource Instance::PrintPages(
768 const PP_PrintPageNumberRange_Dev* page_ranges,
769 uint32_t page_range_count) {
770 if (!print_settings_.is_printing)
771 return pp::Resource();
772
773 print_settings_.print_pages_called_ = true;
774 return engine_->PrintPages(page_ranges, page_range_count,
775 print_settings_.pepper_print_settings);
776 }
777
778 void Instance::PrintEnd() {
779 if (print_settings_.print_pages_called_)
780 UserMetricsRecordAction("PDF.PrintPage");
781 print_settings_.Clear();
782 engine_->PrintEnd();
783 }
784
785 bool Instance::IsPrintScalingDisabled() {
786 return !engine_->GetPrintScaling();
787 }
788
789 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
790 engine_->StartFind(text.c_str(), case_sensitive);
791 return true;
792 }
793
794 void Instance::SelectFindResult(bool forward) {
795 engine_->SelectFindResult(forward);
796 }
797
798 void Instance::StopFind() {
799 engine_->StopFind();
800 }
801
802 void Instance::Zoom(double scale, bool text_only) {
803 UserMetricsRecordAction("PDF.ZoomFromBrowser");
804
805 // If the zoom level doesn't change it means that this zoom change might have
806 // been initiated by the plugin. In that case, we don't want to change the
807 // zoom mode to ZOOM_SCALE as it may have been intentionally set to
808 // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
809 if (scale == zoom_)
810 return;
811
812 SetZoom(ZOOM_SCALE, scale);
813 }
814
815 void Instance::ZoomChanged(double factor) {
816 if (full_)
817 Zoom_Dev::ZoomChanged(factor);
818 }
819
820 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
821 std::vector<PaintManager::ReadyRect>* ready,
822 std::vector<pp::Rect>* pending) {
823 if (image_data_.is_null()) {
824 DCHECK(plugin_size_.IsEmpty());
825 return;
826 }
827 if (first_paint_) {
828 first_paint_ = false;
829 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
830 FillRect(rect, kBackgroundColor);
831 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
832 *pending = paint_rects;
833 return;
834 }
835
836 engine_->PrePaint();
837
838 for (size_t i = 0; i < paint_rects.size(); i++) {
839 // Intersect with plugin area since there could be pending invalidates from
840 // when the plugin area was larger.
841 pp::Rect rect =
842 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
843 if (rect.IsEmpty())
844 continue;
845
846 pp::Rect pdf_rect = available_area_.Intersect(rect);
847 if (!pdf_rect.IsEmpty()) {
848 pdf_rect.Offset(available_area_.x() * -1, 0);
849
850 std::vector<pp::Rect> pdf_ready;
851 std::vector<pp::Rect> pdf_pending;
852 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
853 for (size_t j = 0; j < pdf_ready.size(); ++j) {
854 pdf_ready[j].Offset(available_area_.point());
855 ready->push_back(
856 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
857 }
858 for (size_t j = 0; j < pdf_pending.size(); ++j) {
859 pdf_pending[j].Offset(available_area_.point());
860 pending->push_back(pdf_pending[j]);
861 }
862 }
863
864 for (size_t j = 0; j < background_parts_.size(); ++j) {
865 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
866 if (!intersection.IsEmpty()) {
867 FillRect(intersection, background_parts_[j].color);
868 ready->push_back(
869 PaintManager::ReadyRect(intersection, image_data_, false));
870 }
871 }
872
873 if (document_load_state_ == LOAD_STATE_FAILED) {
874 pp::Point top_center;
875 top_center.set_x(plugin_size_.width() / 2);
876 top_center.set_y(plugin_size_.height() / 2);
877 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
878 }
879
880 #ifdef ENABLE_THUMBNAILS
881 thumbnails_.Paint(&image_data_, rect);
882 #endif
883 }
884
885 engine_->PostPaint();
886
887 // Must paint scrollbars after the background parts, in case we have an
888 // overlay scrollbar that's over the background. We also do this in a separate
889 // loop because the scrollbar painting logic uses the signal of whether there
890 // are pending paints or not to figure out if it should draw right away or
891 // not.
892 for (size_t i = 0; i < paint_rects.size(); i++) {
893 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
894 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
895 }
896
897 if (progress_bar_.visible())
898 PaintOverlayControl(&progress_bar_, &image_data_, ready);
899
900 if (page_indicator_.visible())
901 PaintOverlayControl(&page_indicator_, &image_data_, ready);
902
903 if (toolbar_->current_transparency() != kTransparentAlpha)
904 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
905
906 // Paint autoscroll anchor if needed.
907 if (is_autoscroll_) {
908 size_t limit = ready->size();
909 for (size_t i = 0; i < limit; i++) {
910 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
911 if (!anchor_rect.IsEmpty()) {
912 pp::Rect draw_rc = pp::Rect(
913 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
914 anchor_rect.y() - autoscroll_rect_.y()),
915 anchor_rect.size());
916 // Paint autoscroll anchor.
917 AlphaBlend(autoscroll_anchor_, draw_rc,
918 &image_data_, anchor_rect.point(), kOpaqueAlpha);
919 }
920 }
921 }
922 }
923
924 void Instance::PaintOverlayControl(
925 Control* ctrl,
926 pp::ImageData* image_data,
927 std::vector<PaintManager::ReadyRect>* ready) {
928 // Make sure that we only paint overlay controls over an area that's ready,
929 // i.e. not pending. Otherwise we'll mark the control rect as ready and
930 // it'll overwrite the pdf region.
931 std::list<pp::Rect> ctrl_rects;
932 for (size_t i = 0; i < ready->size(); i++) {
933 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
934 if (!rc.IsEmpty())
935 ctrl_rects.push_back(rc);
936 }
937
938 if (!ctrl_rects.empty()) {
939 ctrl->PaintMultipleRects(image_data, ctrl_rects);
940
941 std::list<pp::Rect>::iterator iter;
942 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
943 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
944 }
945 }
946 }
947
948 void Instance::DidOpen(int32_t result) {
949 if (result == PP_OK) {
950 engine_->HandleDocumentLoad(embed_loader_);
951 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
952 NOTREACHED();
953 }
954 }
955
956 void Instance::DidOpenPreview(int32_t result) {
957 if (result == PP_OK) {
958 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
959 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
960 } else {
961 NOTREACHED();
962 }
963 }
964
965 void Instance::PaintIfWidgetIntersects(
966 pp::Widget_Dev* widget,
967 const pp::Rect& rect,
968 std::vector<PaintManager::ReadyRect>* ready,
969 std::vector<pp::Rect>* pending) {
970 if (!widget)
971 return;
972
973 pp::Rect location;
974 if (!widget->GetLocation(&location))
975 return;
976
977 ScaleRect(device_scale_, &location);
978 location = location.Intersect(rect);
979 if (location.IsEmpty())
980 return;
981
982 if (IsOverlayScrollbar()) {
983 // If we're using overlay scrollbars, and there are pending paints under the
984 // scrollbar, don't update the scrollbar instantly. While it would be nice,
985 // we would need to double buffer the plugin area in order to make this
986 // work. This is because we'd need to always have a copy of what the pdf
987 // under the scrollbar looks like, and additionally we couldn't paint the
988 // pdf under the scrollbar if it's ready until we got the preceding flush.
989 // So in practice, it would make painting slower and introduce extra buffer
990 // copies for the general case.
991 for (size_t i = 0; i < pending->size(); ++i) {
992 if ((*pending)[i].Intersects(location))
993 return;
994 }
995
996 // Even if none of the pending paints are under the scrollbar, we never want
997 // to paint it if it's over the pdf if there are other pending paints.
998 // Otherwise different parts of the pdf plugin would display at different
999 // scroll offsets.
1000 if (!pending->empty() && available_area_.Intersects(rect)) {
1001 pending->push_back(location);
1002 return;
1003 }
1004 }
1005
1006 pp::Rect location_dip = location;
1007 ScaleRect(1.0f / device_scale_, &location_dip);
1008
1009 DCHECK(!image_data_.is_null());
1010 widget->Paint(location_dip, &image_data_);
1011
1012 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
1013 }
1014
1015 void Instance::OnTimerFired(int32_t) {
1016 HandleInputEvent(last_mouse_event_);
1017 }
1018
1019 void Instance::OnClientTimerFired(int32_t id) {
1020 engine_->OnCallback(id);
1021 }
1022
1023 void Instance::OnControlTimerFired(int32_t,
1024 const uint32& control_id,
1025 const uint32& timer_id) {
1026 if (control_id == toolbar_->id()) {
1027 toolbar_->OnTimerFired(timer_id);
1028 } else if (control_id == progress_bar_.id()) {
1029 if (timer_id == delayed_progress_timer_id_) {
1030 if (document_load_state_ == LOAD_STATE_LOADING &&
1031 !progress_bar_.visible()) {
1032 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1033 }
1034 delayed_progress_timer_id_ = 0;
1035 } else {
1036 progress_bar_.OnTimerFired(timer_id);
1037 }
1038 } else if (control_id == kAutoScrollId) {
1039 if (is_autoscroll_) {
1040 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1041 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1042 }
1043 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1044 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1045 }
1046
1047 // Reschedule timer.
1048 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1049 }
1050 } else if (control_id == kPageIndicatorId) {
1051 page_indicator_.OnTimerFired(timer_id);
1052 }
1053 #ifdef ENABLE_THUMBNAILS
1054 else if (control_id == thumbnails_.id()) {
1055 thumbnails_.OnTimerFired(timer_id);
1056 }
1057 #endif
1058 }
1059
1060 void Instance::CalculateBackgroundParts() {
1061 background_parts_.clear();
1062 int v_scrollbar_thickness =
1063 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1064 int h_scrollbar_thickness =
1065 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1066 int width_without_scrollbar = std::max(
1067 plugin_size_.width() - v_scrollbar_thickness, 0);
1068 int height_without_scrollbar = std::max(
1069 plugin_size_.height() - h_scrollbar_thickness, 0);
1070 int left_width = available_area_.x();
1071 int right_start = available_area_.right();
1072 int right_width = abs(width_without_scrollbar - available_area_.right());
1073 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1074
1075 // Add the left, right, and bottom rectangles. Note: we assume only
1076 // horizontal centering.
1077 BackgroundPart part = {
1078 pp::Rect(0, 0, left_width, bottom),
1079 kBackgroundColor
1080 };
1081 if (!part.location.IsEmpty())
1082 background_parts_.push_back(part);
1083 part.location = pp::Rect(right_start, 0, right_width, bottom);
1084 if (!part.location.IsEmpty())
1085 background_parts_.push_back(part);
1086 part.location = pp::Rect(
1087 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1088 if (!part.location.IsEmpty())
1089 background_parts_.push_back(part);
1090
1091 if (h_scrollbar_thickness
1092 #if defined(OS_MACOSX)
1093 ||
1094 #else
1095 &&
1096 #endif
1097 v_scrollbar_thickness) {
1098 part.color = 0xFFFFFFFF;
1099 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1100 plugin_size_.height() - h_scrollbar_thickness,
1101 h_scrollbar_thickness,
1102 v_scrollbar_thickness);
1103 background_parts_.push_back(part);
1104 }
1105 }
1106
1107 int Instance::GetDocumentPixelWidth() const {
1108 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1109 }
1110
1111 int Instance::GetDocumentPixelHeight() const {
1112 return static_cast<int>(ceil(document_size_.height() *
1113 zoom_ *
1114 device_scale_));
1115 }
1116
1117 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1118 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1119 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1120 int stride = image_data_.stride();
1121 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1122 int height = rect.height();
1123 int width = rect.width();
1124 for (int y = 0; y < height; ++y) {
1125 for (int x = 0; x < width; ++x)
1126 *(ptr + x) = color;
1127 ptr += stride / 4;
1128 }
1129 }
1130
1131 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1132 document_size_ = size;
1133
1134 OnGeometryChanged(zoom_, device_scale_);
1135 }
1136
1137 void Instance::Invalidate(const pp::Rect& rect) {
1138 pp::Rect offset_rect(rect);
1139 offset_rect.Offset(available_area_.point());
1140 paint_manager_.InvalidateRect(offset_rect);
1141 }
1142
1143 void Instance::Scroll(const pp::Point& point) {
1144 pp::Rect scroll_area = available_area_;
1145 if (IsOverlayScrollbar()) {
1146 pp::Rect rc;
1147 if (h_scrollbar_.get()) {
1148 h_scrollbar_->GetLocation(&rc);
1149 ScaleRect(device_scale_, &rc);
1150 if (scroll_area.bottom() > rc.y()) {
1151 scroll_area.set_height(rc.y() - scroll_area.y());
1152 paint_manager_.InvalidateRect(rc);
1153 }
1154 }
1155 if (v_scrollbar_.get()) {
1156 v_scrollbar_->GetLocation(&rc);
1157 ScaleRect(device_scale_, &rc);
1158 if (scroll_area.right() > rc.x()) {
1159 scroll_area.set_width(rc.x() - scroll_area.x());
1160 paint_manager_.InvalidateRect(rc);
1161 }
1162 }
1163 }
1164 paint_manager_.ScrollRect(scroll_area, point);
1165
1166 if (toolbar_->current_transparency() != kTransparentAlpha)
1167 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1168
1169 if (progress_bar_.visible())
1170 paint_manager_.InvalidateRect(progress_bar_.rect());
1171
1172 if (is_autoscroll_)
1173 paint_manager_.InvalidateRect(autoscroll_rect_);
1174
1175 if (show_page_indicator_) {
1176 page_indicator_.set_current_page(GetPageNumberToDisplay());
1177 page_indicator_.Splash();
1178 }
1179
1180 if (page_indicator_.visible())
1181 paint_manager_.InvalidateRect(page_indicator_.rect());
1182
1183 // Run the scroll callback asynchronously. This function can be invoked by a
1184 // layout change which should not re-enter into JS synchronously.
1185 pp::CompletionCallback callback =
1186 callback_factory_.NewCallback(&Instance::RunCallback,
1187 on_scroll_callback_);
1188 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1189 }
1190
1191 void Instance::ScrollToX(int position) {
1192 if (!h_scrollbar_.get()) {
1193 NOTREACHED();
1194 return;
1195 }
1196 int position_dip = static_cast<int>(position / device_scale_);
1197 h_scrollbar_->SetValue(position_dip);
1198 }
1199
1200 void Instance::ScrollToY(int position) {
1201 if (!v_scrollbar_.get()) {
1202 NOTREACHED();
1203 return;
1204 }
1205 int position_dip = static_cast<int>(position / device_scale_);
1206 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1207 }
1208
1209 void Instance::ScrollToPage(int page) {
1210 if (!v_scrollbar_.get())
1211 return;
1212
1213 if (engine_->GetNumberOfPages() == 0)
1214 return;
1215
1216 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1217 pp::Rect rect = engine_->GetPageRect(index);
1218 // If we are trying to scroll pass the last page,
1219 // scroll to the end of the last page.
1220 int position = index < page ? rect.bottom() : rect.y();
1221 ScrollToY(position * zoom_ * device_scale_);
1222 }
1223
1224 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1225 std::string url_copy(url);
1226
1227 // Empty |url_copy| is ok, and will effectively be a reload.
1228 // Skip the code below so an empty URL does not turn into "http://", which
1229 // will cause GURL to fail a DCHECK.
1230 if (!url_copy.empty()) {
1231 // If |url_copy| starts with '#', then it's for the same URL with a
1232 // different URL fragment.
1233 if (url_copy[0] == '#') {
1234 url_copy = url_ + url_copy;
1235 // Changing the href does not actually do anything when navigating in the
1236 // same tab, so do the actual page scroll here. Then fall through so the
1237 // href gets updated.
1238 if (!open_in_new_tab) {
1239 int page_number = GetInitialPage(url_copy);
1240 if (page_number >= 0)
1241 ScrollToPage(page_number);
1242 }
1243 }
1244 // If there's no scheme, add http.
1245 if (url_copy.find("://") == std::string::npos &&
1246 url_copy.find("mailto:") == std::string::npos) {
1247 url_copy = "http://" + url_copy;
1248 }
1249 // Make sure |url_copy| starts with a valid scheme.
1250 if (url_copy.find("http://") != 0 &&
1251 url_copy.find("https://") != 0 &&
1252 url_copy.find("ftp://") != 0 &&
1253 url_copy.find("file://") != 0 &&
1254 url_copy.find("mailto:") != 0) {
1255 return;
1256 }
1257 // Make sure |url_copy| is not only a scheme.
1258 if (url_copy == "http://" ||
1259 url_copy == "https://" ||
1260 url_copy == "ftp://" ||
1261 url_copy == "file://" ||
1262 url_copy == "mailto:") {
1263 return;
1264 }
1265 }
1266 if (open_in_new_tab) {
1267 GetWindowObject().Call("open", url_copy);
1268 } else {
1269 GetWindowObject().GetProperty("top").GetProperty("location").
1270 SetProperty("href", url_copy);
1271 }
1272 }
1273
1274 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1275 if (cursor == cursor_)
1276 return;
1277 cursor_ = cursor;
1278
1279 const PPB_CursorControl_Dev* cursor_interface =
1280 reinterpret_cast<const PPB_CursorControl_Dev*>(
1281 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1282 if (!cursor_interface) {
1283 NOTREACHED();
1284 return;
1285 }
1286
1287 cursor_interface->SetCursor(
1288 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1289 }
1290
1291 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1292 if (!v_scrollbar_.get())
1293 return;
1294
1295 float inverse_scale = 1.0f / device_scale_;
1296 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1297 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1298 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1299 }
1300
1301 v_scrollbar_->SetTickMarks(
1302 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1303 }
1304
1305 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1306 NumberOfFindResultsChanged(total, final_result);
1307 }
1308
1309 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1310 DCHECK_GE(current_find_index, 0);
1311 SelectedFindResultChanged(current_find_index);
1312 }
1313
1314 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1315 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1316 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1317 switch (control_id) {
1318 case kFitToPageButtonId:
1319 UserMetricsRecordAction("PDF.FitToPageButton");
1320 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1321 ZoomChanged(zoom_);
1322 break;
1323 case kFitToWidthButtonId:
1324 UserMetricsRecordAction("PDF.FitToWidthButton");
1325 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1326 ZoomChanged(zoom_);
1327 break;
1328 case kZoomOutButtonId:
1329 case kZoomInButtonId:
1330 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1331 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1332 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1333 ZoomChanged(zoom_);
1334 break;
1335 case kSaveButtonId:
1336 UserMetricsRecordAction("PDF.SaveButton");
1337 SaveAs();
1338 break;
1339 case kPrintButtonId:
1340 UserMetricsRecordAction("PDF.PrintButton");
1341 Print();
1342 break;
1343 }
1344 }
1345 if (control_id == kThumbnailsId &&
1346 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1347 int page = *static_cast<int*>(data);
1348 pp::Rect page_rc(engine_->GetPageRect(page));
1349 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1350 }
1351 }
1352
1353 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1354 paint_manager_.InvalidateRect(rc);
1355 }
1356
1357 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1358 current_timer_id_++;
1359 pp::CompletionCallback callback =
1360 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1361 control_id,
1362 current_timer_id_);
1363 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1364 return current_timer_id_;
1365 }
1366
1367 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1368 // TODO(gene): set event capture here.
1369 }
1370
1371 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1372 UpdateCursor(cursor_type);
1373 }
1374
1375 pp::Instance* Instance::GetInstance() {
1376 return this;
1377 }
1378
1379 void Instance::GetDocumentPassword(
1380 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1381 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1382 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1383 *callback.output() = result.pp_var();
1384 callback.Run(PP_OK);
1385 }
1386
1387 void Instance::Alert(const std::string& message) {
1388 GetWindowObject().Call("alert", message);
1389 }
1390
1391 bool Instance::Confirm(const std::string& message) {
1392 pp::Var result = GetWindowObject().Call("confirm", message);
1393 return result.is_bool() ? result.AsBool() : false;
1394 }
1395
1396 std::string Instance::Prompt(const std::string& question,
1397 const std::string& default_answer) {
1398 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1399 return result.is_string() ? result.AsString() : std::string();
1400 }
1401
1402 std::string Instance::GetURL() {
1403 return url_;
1404 }
1405
1406 void Instance::Email(const std::string& to,
1407 const std::string& cc,
1408 const std::string& bcc,
1409 const std::string& subject,
1410 const std::string& body) {
1411 std::string javascript =
1412 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1413 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1414 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1415 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1416 "&body=" + net::EscapeUrlEncodedData(body, false) +
1417 "';var temp = window.open(href, '_blank', " +
1418 "'width=1,height=1');if(temp) temp.close();";
1419 ExecuteScript(javascript);
1420 }
1421
1422 void Instance::Print() {
1423 if (!printing_enabled_ ||
1424 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1425 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1426 return;
1427 }
1428
1429 pp::CompletionCallback callback =
1430 callback_factory_.NewCallback(&Instance::OnPrint);
1431 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1432 }
1433
1434 void Instance::OnPrint(int32_t) {
1435 pp::PDF::Print(this);
1436 }
1437
1438 void Instance::SaveAs() {
1439 pp::PDF::SaveAs(this);
1440 }
1441
1442 void Instance::SubmitForm(const std::string& url,
1443 const void* data,
1444 int length) {
1445 pp::URLRequestInfo request(this);
1446 request.SetURL(url);
1447 request.SetMethod("POST");
1448 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1449
1450 pp::CompletionCallback callback =
1451 form_factory_.NewCallback(&Instance::FormDidOpen);
1452 form_loader_ = CreateURLLoaderInternal();
1453 int rv = form_loader_.Open(request, callback);
1454 if (rv != PP_OK_COMPLETIONPENDING)
1455 callback.Run(rv);
1456 }
1457
1458 void Instance::FormDidOpen(int32_t result) {
1459 // TODO: inform the user of success/failure.
1460 if (result != PP_OK) {
1461 NOTREACHED();
1462 }
1463 }
1464
1465 std::string Instance::ShowFileSelectionDialog() {
1466 // Seems like very low priority to implement, since the pdf has no way to get
1467 // the file data anyways. Javascript doesn't let you do this synchronously.
1468 NOTREACHED();
1469 return std::string();
1470 }
1471
1472 pp::URLLoader Instance::CreateURLLoader() {
1473 if (full_) {
1474 if (!did_call_start_loading_) {
1475 did_call_start_loading_ = true;
1476 pp::PDF::DidStartLoading(this);
1477 }
1478
1479 // Disable save and print until the document is fully loaded, since they
1480 // would generate an incomplete document. Need to do this each time we
1481 // call DidStartLoading since that resets the content restrictions.
1482 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1483 CONTENT_RESTRICTION_PRINT);
1484 }
1485
1486 return CreateURLLoaderInternal();
1487 }
1488
1489 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1490 pp::CompletionCallback callback =
1491 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1492 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1493 }
1494
1495 void Instance::SearchString(const base::char16* string,
1496 const base::char16* term,
1497 bool case_sensitive,
1498 std::vector<SearchStringResult>* results) {
1499 if (!pp::PDF::IsAvailable()) {
1500 NOTREACHED();
1501 return;
1502 }
1503
1504 PP_PrivateFindResult* pp_results;
1505 int count = 0;
1506 pp::PDF::SearchString(
1507 this,
1508 reinterpret_cast<const unsigned short*>(string),
1509 reinterpret_cast<const unsigned short*>(term),
1510 case_sensitive,
1511 &pp_results,
1512 &count);
1513
1514 results->resize(count);
1515 for (int i = 0; i < count; ++i) {
1516 (*results)[i].start_index = pp_results[i].start_index;
1517 (*results)[i].length = pp_results[i].length;
1518 }
1519
1520 pp::Memory_Dev memory;
1521 memory.MemFree(pp_results);
1522 }
1523
1524 void Instance::DocumentPaintOccurred() {
1525 if (painted_first_page_)
1526 return;
1527
1528 painted_first_page_ = true;
1529 UpdateToolbarPosition(false);
1530 toolbar_->Splash(kToolbarSplashTimeoutMs);
1531
1532 if (engine_->GetNumberOfPages() > 1)
1533 show_page_indicator_ = true;
1534 else
1535 show_page_indicator_ = false;
1536
1537 if (v_scrollbar_.get() && show_page_indicator_) {
1538 page_indicator_.set_current_page(GetPageNumberToDisplay());
1539 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1540 kPageIndicatorInitialFadeTimeoutMs);
1541 }
1542 }
1543
1544 void Instance::DocumentLoadComplete(int page_count) {
1545 // Clear focus state for OSK.
1546 FormTextFieldFocusChange(false);
1547
1548 // Update progress control.
1549 if (progress_bar_.visible())
1550 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1551
1552 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1553 document_load_state_ = LOAD_STATE_COMPLETE;
1554 UserMetricsRecordAction("PDF.LoadSuccess");
1555
1556 if (did_call_start_loading_) {
1557 pp::PDF::DidStopLoading(this);
1558 did_call_start_loading_ = false;
1559 }
1560
1561 if (on_load_callback_.is_string())
1562 ExecuteScript(on_load_callback_);
1563 // Note: If we are in print preview mode on_load_callback_ might call
1564 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1565 // #page=N is not supported in Print Preview.
1566 if (!IsPrintPreview()) {
1567 int initial_page = GetInitialPage(url_);
1568 if (initial_page >= 0)
1569 ScrollToPage(initial_page);
1570 }
1571
1572 if (!full_)
1573 return;
1574 if (!pp::PDF::IsAvailable())
1575 return;
1576
1577 int content_restrictions =
1578 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1579 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1580 content_restrictions |= CONTENT_RESTRICTION_COPY;
1581
1582 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1583 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1584 printing_enabled_ = false;
1585 if (current_tb_info_ == kPDFToolbarButtons) {
1586 // Remove Print button.
1587 CreateToolbar(kPDFNoPrintToolbarButtons,
1588 arraysize(kPDFNoPrintToolbarButtons));
1589 UpdateToolbarPosition(false);
1590 Invalidate(pp::Rect(plugin_size_));
1591 }
1592 }
1593
1594 pp::PDF::SetContentRestriction(this, content_restrictions);
1595
1596 pp::PDF::HistogramPDFPageCount(this, page_count);
1597 }
1598
1599 void Instance::RotateClockwise() {
1600 engine_->RotateClockwise();
1601 }
1602
1603 void Instance::RotateCounterclockwise() {
1604 engine_->RotateCounterclockwise();
1605 }
1606
1607 void Instance::PreviewDocumentLoadComplete() {
1608 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1609 preview_pages_info_.empty()) {
1610 return;
1611 }
1612
1613 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1614
1615 int dest_page_index = preview_pages_info_.front().second;
1616 int src_page_index =
1617 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1618 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1619 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1620
1621 preview_pages_info_.pop();
1622 // |print_preview_page_count_| is not updated yet. Do not load any
1623 // other preview pages till we get this information.
1624 if (print_preview_page_count_ == 0)
1625 return;
1626
1627 if (preview_pages_info_.size())
1628 LoadAvailablePreviewPage();
1629 }
1630
1631 void Instance::DocumentLoadFailed() {
1632 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1633 UserMetricsRecordAction("PDF.LoadFailure");
1634
1635 // Hide progress control.
1636 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1637
1638 if (did_call_start_loading_) {
1639 pp::PDF::DidStopLoading(this);
1640 did_call_start_loading_ = false;
1641 }
1642
1643 document_load_state_ = LOAD_STATE_FAILED;
1644 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1645 }
1646
1647 void Instance::PreviewDocumentLoadFailed() {
1648 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1649 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1650 preview_pages_info_.empty()) {
1651 return;
1652 }
1653
1654 preview_document_load_state_ = LOAD_STATE_FAILED;
1655 preview_pages_info_.pop();
1656
1657 if (preview_pages_info_.size())
1658 LoadAvailablePreviewPage();
1659 }
1660
1661 pp::Instance* Instance::GetPluginInstance() {
1662 return GetInstance();
1663 }
1664
1665 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1666 std::string metric("PDF_Unsupported_");
1667 metric += feature;
1668 if (!unsupported_features_reported_.count(metric)) {
1669 unsupported_features_reported_.insert(metric);
1670 UserMetricsRecordAction(metric);
1671 }
1672
1673 // Since we use an info bar, only do this for full frame plugins..
1674 if (!full_)
1675 return;
1676
1677 if (told_browser_about_unsupported_feature_)
1678 return;
1679 told_browser_about_unsupported_feature_ = true;
1680
1681 pp::PDF::HasUnsupportedFeature(this);
1682 }
1683
1684 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1685 double progress = 0.0;
1686 if (doc_size == 0) {
1687 // Document size is unknown. Use heuristics.
1688 // We'll make progress logarithmic from 0 to 100M.
1689 static const double kFactor = log(100000000.0) / 100.0;
1690 if (available > 0) {
1691 progress = log(static_cast<double>(available)) / kFactor;
1692 if (progress > 100.0)
1693 progress = 100.0;
1694 }
1695 } else {
1696 progress = 100.0 * static_cast<double>(available) / doc_size;
1697 }
1698 progress_bar_.SetProgress(progress);
1699 }
1700
1701 void Instance::FormTextFieldFocusChange(bool in_focus) {
1702 if (!text_input_.get())
1703 return;
1704 if (in_focus)
1705 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1706 else
1707 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1708 }
1709
1710 // Called by PDFScriptableObject.
1711 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1712 std::string method_str = method.AsString();
1713 return (method_str == kJSAccessibility ||
1714 method_str == kJSDocumentLoadComplete ||
1715 method_str == kJSGetHeight ||
1716 method_str == kJSGetHorizontalScrollbarThickness ||
1717 method_str == kJSGetPageLocationNormalized ||
1718 method_str == kJSGetSelectedText ||
1719 method_str == kJSGetVerticalScrollbarThickness ||
1720 method_str == kJSGetWidth ||
1721 method_str == kJSGetZoomLevel ||
1722 method_str == kJSGoToPage ||
1723 method_str == kJSGrayscale ||
1724 method_str == kJSLoadPreviewPage ||
1725 method_str == kJSOnLoad ||
1726 method_str == kJSOnPluginSizeChanged ||
1727 method_str == kJSOnScroll ||
1728 method_str == kJSPageXOffset ||
1729 method_str == kJSPageYOffset ||
1730 method_str == kJSPrintPreviewPageCount ||
1731 method_str == kJSReload ||
1732 method_str == kJSRemovePrintButton ||
1733 method_str == kJSResetPrintPreviewUrl ||
1734 method_str == kJSSendKeyEvent ||
1735 method_str == kJSSetPageNumbers ||
1736 method_str == kJSSetPageXOffset ||
1737 method_str == kJSSetPageYOffset ||
1738 method_str == kJSSetZoomLevel ||
1739 method_str == kJSZoomFitToHeight ||
1740 method_str == kJSZoomFitToWidth ||
1741 method_str == kJSZoomIn ||
1742 method_str == kJSZoomOut);
1743 }
1744
1745 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1746 const std::vector<pp::Var>& args,
1747 pp::Var* exception) {
1748 std::string method_str = method.AsString();
1749 if (method_str == kJSGrayscale) {
1750 if (args.size() == 1 && args[0].is_bool()) {
1751 engine_->SetGrayscale(args[0].AsBool());
1752 // Redraw
1753 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1754 #ifdef ENABLE_THUMBNAILS
1755 if (thumbnails_.visible())
1756 thumbnails_.Show(true, true);
1757 #endif
1758 return pp::Var(true);
1759 }
1760 return pp::Var(false);
1761 }
1762 if (method_str == kJSOnLoad) {
1763 if (args.size() == 1 && args[0].is_string()) {
1764 on_load_callback_ = args[0];
1765 return pp::Var(true);
1766 }
1767 return pp::Var(false);
1768 }
1769 if (method_str == kJSOnScroll) {
1770 if (args.size() == 1 && args[0].is_string()) {
1771 on_scroll_callback_ = args[0];
1772 return pp::Var(true);
1773 }
1774 return pp::Var(false);
1775 }
1776 if (method_str == kJSOnPluginSizeChanged) {
1777 if (args.size() == 1 && args[0].is_string()) {
1778 on_plugin_size_changed_callback_ = args[0];
1779 return pp::Var(true);
1780 }
1781 return pp::Var(false);
1782 }
1783 if (method_str == kJSReload) {
1784 document_load_state_ = LOAD_STATE_LOADING;
1785 if (!full_)
1786 LoadUrl(url_);
1787 preview_engine_.reset();
1788 print_preview_page_count_ = 0;
1789 engine_.reset(PDFEngine::Create(this));
1790 engine_->New(url_.c_str());
1791 #ifdef ENABLE_THUMBNAILS
1792 thumbnails_.ResetEngine(engine_.get());
1793 #endif
1794 return pp::Var();
1795 }
1796 if (method_str == kJSResetPrintPreviewUrl) {
1797 if (args.size() == 1 && args[0].is_string()) {
1798 url_ = args[0].AsString();
1799 preview_pages_info_ = std::queue<PreviewPageInfo>();
1800 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1801 }
1802 return pp::Var();
1803 }
1804 if (method_str == kJSZoomFitToHeight) {
1805 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1806 return pp::Var();
1807 }
1808 if (method_str == kJSZoomFitToWidth) {
1809 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1810 return pp::Var();
1811 }
1812 if (method_str == kJSZoomIn) {
1813 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1814 return pp::Var();
1815 }
1816 if (method_str == kJSZoomOut) {
1817 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1818 return pp::Var();
1819 }
1820 if (method_str == kJSSetZoomLevel) {
1821 if (args.size() == 1 && args[0].is_number())
1822 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1823 return pp::Var();
1824 }
1825 if (method_str == kJSGetZoomLevel) {
1826 return pp::Var(zoom_);
1827 }
1828 if (method_str == kJSGetHeight) {
1829 return pp::Var(plugin_size_.height());
1830 }
1831 if (method_str == kJSGetWidth) {
1832 return pp::Var(plugin_size_.width());
1833 }
1834 if (method_str == kJSGetHorizontalScrollbarThickness) {
1835 return pp::Var(
1836 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1837 }
1838 if (method_str == kJSGetVerticalScrollbarThickness) {
1839 return pp::Var(
1840 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1841 }
1842 if (method_str == kJSGetSelectedText) {
1843 return GetSelectedText(false);
1844 }
1845 if (method_str == kJSDocumentLoadComplete) {
1846 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1847 }
1848 if (method_str == kJSPageYOffset) {
1849 return pp::Var(static_cast<int32_t>(
1850 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1851 }
1852 if (method_str == kJSSetPageYOffset) {
1853 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1854 ScrollToY(GetScaled(args[0].AsInt()));
1855 return pp::Var();
1856 }
1857 if (method_str == kJSPageXOffset) {
1858 return pp::Var(static_cast<int32_t>(
1859 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1860 }
1861 if (method_str == kJSSetPageXOffset) {
1862 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1863 ScrollToX(GetScaled(args[0].AsInt()));
1864 return pp::Var();
1865 }
1866 if (method_str == kJSRemovePrintButton) {
1867 CreateToolbar(kPrintPreviewToolbarButtons,
1868 arraysize(kPrintPreviewToolbarButtons));
1869 UpdateToolbarPosition(false);
1870 Invalidate(pp::Rect(plugin_size_));
1871 return pp::Var();
1872 }
1873 if (method_str == kJSGoToPage) {
1874 if (args.size() == 1 && args[0].is_string()) {
1875 ScrollToPage(atoi(args[0].AsString().c_str()));
1876 }
1877 return pp::Var();
1878 }
1879 if (method_str == kJSAccessibility) {
1880 if (args.size() == 0) {
1881 base::DictionaryValue node;
1882 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1883 node.SetBoolean(kAccessibleLoaded,
1884 document_load_state_ != LOAD_STATE_LOADING);
1885 bool has_permissions =
1886 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1887 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1888 node.SetBoolean(kAccessibleCopyable, has_permissions);
1889 std::string json;
1890 base::JSONWriter::Write(&node, &json);
1891 return pp::Var(json);
1892 } else if (args[0].is_number()) {
1893 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1894 }
1895 }
1896 if (method_str == kJSPrintPreviewPageCount) {
1897 if (args.size() == 1 && args[0].is_number())
1898 SetPrintPreviewMode(args[0].AsInt());
1899 return pp::Var();
1900 }
1901 if (method_str == kJSLoadPreviewPage) {
1902 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1903 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1904 return pp::Var();
1905 }
1906 if (method_str == kJSGetPageLocationNormalized) {
1907 const size_t kMaxLength = 30;
1908 char location_info[kMaxLength];
1909 int page_idx = engine_->GetMostVisiblePage();
1910 if (page_idx < 0)
1911 return pp::Var(std::string());
1912 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1913 int v_scrollbar_reserved_thickness =
1914 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1915
1916 rect.set_x(rect.x() + ((plugin_size_.width() -
1917 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1918 base::snprintf(location_info,
1919 kMaxLength,
1920 "%0.4f;%0.4f;%0.4f;%0.4f;",
1921 rect.x() / static_cast<float>(plugin_size_.width()),
1922 rect.y() / static_cast<float>(plugin_size_.height()),
1923 rect.width() / static_cast<float>(plugin_size_.width()),
1924 rect.height()/ static_cast<float>(plugin_size_.height()));
1925 return pp::Var(std::string(location_info));
1926 }
1927 if (method_str == kJSSetPageNumbers) {
1928 if (args.size() != 1 || !args[0].is_string())
1929 return pp::Var();
1930 const int num_pages_signed = engine_->GetNumberOfPages();
1931 if (num_pages_signed <= 0)
1932 return pp::Var();
1933 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1934 base::JSONReader::Read(args[0].AsString(), false)));
1935 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1936 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1937 return pp::Var();
1938
1939 std::vector<int> print_preview_page_numbers;
1940 for (size_t index = 0; index < num_pages; ++index) {
1941 int page_number = 0; // |page_number| is 1-based.
1942 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1943 return pp::Var();
1944 print_preview_page_numbers.push_back(page_number);
1945 }
1946 print_preview_page_numbers_ = print_preview_page_numbers;
1947 page_indicator_.set_current_page(GetPageNumberToDisplay());
1948 return pp::Var();
1949 }
1950 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1951 // In JS, creating a synthetic keyboard event and dispatching it always
1952 // result in a keycode of 0.
1953 if (method_str == kJSSendKeyEvent) {
1954 if (args.size() == 1 && args[0].is_number()) {
1955 pp::KeyboardInputEvent event(
1956 this, // instance
1957 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1958 0, // timestamp, not used for kbd events.
1959 0, // no modifiers.
1960 args[0].AsInt(), // keycode.
1961 pp::Var()); // no char text needed.
1962 HandleInputEvent(event);
1963 }
1964 }
1965 return pp::Var();
1966 }
1967
1968 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1969 bool force_no_horizontal_scrollbar = false;
1970 int scrollbar_thickness = GetScrollbarThickness();
1971
1972 if (old_device_scale != device_scale_) {
1973 // Change in device scale forces us to recreate resources
1974 ConfigureNumberImageGenerator();
1975
1976 CreateToolbar(current_tb_info_, current_tb_info_size_);
1977 // Load autoscroll anchor image.
1978 autoscroll_anchor_ =
1979 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1980
1981 ConfigurePageIndicator();
1982 ConfigureProgressBar();
1983
1984 pp::Point scroll_position = engine_->GetScrollPosition();
1985 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1986 engine_->SetScrollPosition(scroll_position);
1987 }
1988
1989 UpdateZoomScale();
1990 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1991 engine_->ZoomUpdated(zoom_ * device_scale_);
1992 if (zoom_ != old_zoom)
1993 ZoomChanged(zoom_);
1994
1995 available_area_ = pp::Rect(plugin_size_);
1996 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1997 CreateVerticalScrollbar();
1998 } else {
1999 DestroyVerticalScrollbar();
2000 }
2001
2002 int v_scrollbar_reserved_thickness =
2003 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
2004
2005 if (!force_no_horizontal_scrollbar &&
2006 GetDocumentPixelWidth() >
2007 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
2008 CreateHorizontalScrollbar();
2009
2010 // Adding the horizontal scrollbar now might cause us to need vertical
2011 // scrollbars.
2012 if (GetDocumentPixelHeight() >
2013 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
2014 CreateVerticalScrollbar();
2015 }
2016
2017 } else {
2018 DestroyHorizontalScrollbar();
2019 }
2020
2021 #ifdef ENABLE_THUMBNAILS
2022 int thumbnails_pos = 0, thumbnails_total = 0;
2023 #endif
2024 if (v_scrollbar_.get()) {
2025 v_scrollbar_->SetScale(device_scale_);
2026 available_area_.set_width(
2027 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
2028
2029 #ifdef ENABLE_THUMBNAILS
2030 int height = plugin_size_.height();
2031 #endif
2032 int height_dip = plugin_dip_size_.height();
2033
2034 #if defined(OS_MACOSX)
2035 // Before Lion, Mac always had the resize at the bottom. After that, it
2036 // never did.
2037 if ((base::mac::IsOSSnowLeopard() && full_) ||
2038 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2039 #else
2040 if (h_scrollbar_.get()) {
2041 #endif // defined(OS_MACOSX)
2042 #ifdef ENABLE_THUMBNAILS
2043 height -= GetScaled(GetScrollbarThickness());
2044 #endif
2045 height_dip -= GetScrollbarThickness();
2046 }
2047 #ifdef ENABLE_THUMBNAILS
2048 int32 doc_height = GetDocumentPixelHeight();
2049 #endif
2050 int32 doc_height_dip =
2051 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2052 #if defined(OS_MACOSX)
2053 // On the Mac we always allow room for the resize button (whose width is
2054 // the same as that of the scrollbar) in full mode. However, if there is no
2055 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2056 // end of the document. This is because the scrollbar assumes that its own
2057 // height (in the case of a vscroll bar) is the same as the height of the
2058 // viewport. Since the viewport is actually larger, we compensate by
2059 // adjusting the document height. Similar logic applies below for the
2060 // horizontal scrollbar.
2061 // For example, if the document size is 1000, and the viewport size is 200,
2062 // then the scrollbar position at the end will be 800. In this case the
2063 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2064 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2065 // be 785. Making the document size 985 achieves this.
2066 if (full_ && !h_scrollbar_.get()) {
2067 #ifdef ENABLE_THUMBNAILS
2068 doc_height -= GetScaled(GetScrollbarThickness());
2069 #endif
2070 doc_height_dip -= GetScrollbarThickness();
2071 }
2072 #endif // defined(OS_MACOSX)
2073
2074 int32 position;
2075 position = v_scrollbar_->GetValue();
2076 position = static_cast<int>(position * zoom_ / old_zoom);
2077 valid_v_range_ = doc_height_dip - height_dip;
2078 if (position > valid_v_range_)
2079 position = valid_v_range_;
2080
2081 v_scrollbar_->SetValue(position);
2082
2083 PP_Rect loc;
2084 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2085 if (IsOverlayScrollbar())
2086 loc.point.x -= scrollbar_thickness;
2087 loc.point.y = 0;
2088 loc.size.width = scrollbar_thickness;
2089 loc.size.height = height_dip;
2090 v_scrollbar_->SetLocation(loc);
2091 v_scrollbar_->SetDocumentSize(doc_height_dip);
2092
2093 #ifdef ENABLE_THUMBNAILS
2094 thumbnails_pos = position;
2095 thumbnails_total = doc_height - height;
2096 #endif
2097 }
2098
2099 if (h_scrollbar_.get()) {
2100 h_scrollbar_->SetScale(device_scale_);
2101 available_area_.set_height(
2102 std::max(0, plugin_size_.height() -
2103 GetScaled(GetScrollbarReservedThickness())));
2104
2105 int width_dip = plugin_dip_size_.width();
2106
2107 // See note above.
2108 #if defined(OS_MACOSX)
2109 if ((base::mac::IsOSSnowLeopard() && full_) ||
2110 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2111 #else
2112 if (v_scrollbar_.get()) {
2113 #endif
2114 width_dip -= GetScrollbarThickness();
2115 }
2116 int32 doc_width_dip =
2117 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2118 #if defined(OS_MACOSX)
2119 // See comment in the above if (v_scrollbar_.get()) block.
2120 if (full_ && !v_scrollbar_.get())
2121 doc_width_dip -= GetScrollbarThickness();
2122 #endif // defined(OS_MACOSX)
2123
2124 int32 position;
2125 position = h_scrollbar_->GetValue();
2126 position = static_cast<int>(position * zoom_ / old_zoom);
2127 position = std::min(position, doc_width_dip - width_dip);
2128
2129 h_scrollbar_->SetValue(position);
2130
2131 PP_Rect loc;
2132 loc.point.x = 0;
2133 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2134 if (IsOverlayScrollbar())
2135 loc.point.y -= scrollbar_thickness;
2136 loc.size.width = width_dip;
2137 loc.size.height = scrollbar_thickness;
2138 h_scrollbar_->SetLocation(loc);
2139 h_scrollbar_->SetDocumentSize(doc_width_dip);
2140 }
2141
2142 int doc_width = GetDocumentPixelWidth();
2143 if (doc_width < available_area_.width()) {
2144 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2145 available_area_.set_width(doc_width);
2146 }
2147 int doc_height = GetDocumentPixelHeight();
2148 if (doc_height < available_area_.height()) {
2149 available_area_.set_height(doc_height);
2150 }
2151
2152 // We'll invalidate the entire plugin anyways.
2153 UpdateToolbarPosition(false);
2154 UpdateProgressBarPosition(false);
2155 UpdatePageIndicatorPosition(false);
2156
2157 #ifdef ENABLE_THUMBNAILS
2158 // Update thumbnail control position.
2159 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2160 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2161 GetScaled(kThumbnailsWidth), plugin_size_.height());
2162 if (v_scrollbar_.get())
2163 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2164 if (h_scrollbar_.get())
2165 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2166 thumbnails_.SetRect(thumbnails_rc, false);
2167 #endif
2168
2169 CalculateBackgroundParts();
2170 engine_->PageOffsetUpdated(available_area_.point());
2171 engine_->PluginSizeUpdated(available_area_.size());
2172
2173 if (!document_size_.GetArea())
2174 return;
2175 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2176
2177 // Run the plugin size change callback asynchronously. This function can be
2178 // invoked by a layout change which should not re-enter into JS synchronously.
2179 pp::CompletionCallback callback =
2180 callback_factory_.NewCallback(&Instance::RunCallback,
2181 on_plugin_size_changed_callback_);
2182 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2183 }
2184
2185 void Instance::RunCallback(int32_t, pp::Var callback) {
2186 if (callback.is_string())
2187 ExecuteScript(callback);
2188 }
2189
2190 void Instance::CreateHorizontalScrollbar() {
2191 if (h_scrollbar_.get())
2192 return;
2193
2194 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2195 }
2196
2197 void Instance::CreateVerticalScrollbar() {
2198 if (v_scrollbar_.get())
2199 return;
2200
2201 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2202 }
2203
2204 void Instance::DestroyHorizontalScrollbar() {
2205 if (!h_scrollbar_.get())
2206 return;
2207 if (h_scrollbar_->GetValue())
2208 engine_->ScrolledToXPosition(0);
2209 h_scrollbar_.reset();
2210 }
2211
2212 void Instance::DestroyVerticalScrollbar() {
2213 if (!v_scrollbar_.get())
2214 return;
2215 if (v_scrollbar_->GetValue())
2216 engine_->ScrolledToYPosition(0);
2217 v_scrollbar_.reset();
2218 page_indicator_.Show(false, true);
2219 }
2220
2221 int Instance::GetScrollbarThickness() {
2222 if (scrollbar_thickness_ == -1) {
2223 pp::Scrollbar_Dev temp_scrollbar(this, false);
2224 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2225 scrollbar_reserved_thickness_ =
2226 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2227 }
2228
2229 return scrollbar_thickness_;
2230 }
2231
2232 int Instance::GetScrollbarReservedThickness() {
2233 GetScrollbarThickness();
2234 return scrollbar_reserved_thickness_;
2235 }
2236
2237 bool Instance::IsOverlayScrollbar() {
2238 return GetScrollbarReservedThickness() == 0;
2239 }
2240
2241 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2242 toolbar_.reset(new FadingControls());
2243
2244 DCHECK(tb_info);
2245 DCHECK(size >= 0);
2246
2247 // Remember the current toolbar information in case we need to recreate the
2248 // images later.
2249 current_tb_info_ = tb_info;
2250 current_tb_info_size_ = size;
2251
2252 int max_height = 0;
2253 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2254 ScalePoint(device_scale_, &origin);
2255
2256 std::list<Button*> buttons;
2257 for (size_t i = 0; i < size; i++) {
2258 Button* btn = new Button;
2259 pp::ImageData normal_face =
2260 CreateResourceImage(tb_info[i].normal);
2261 btn->CreateButton(tb_info[i].id,
2262 origin,
2263 true,
2264 toolbar_.get(),
2265 tb_info[i].style,
2266 normal_face,
2267 CreateResourceImage(tb_info[i].highlighted),
2268 CreateResourceImage(tb_info[i].pressed));
2269 buttons.push_back(btn);
2270
2271 origin += pp::Point(normal_face.size().width(), 0);
2272 max_height = std::max(max_height, normal_face.size().height());
2273 }
2274
2275 pp::Rect rc_toolbar(0, 0,
2276 origin.x() + GetToolbarRightOffset(),
2277 origin.y() + max_height + GetToolbarBottomOffset());
2278 toolbar_->CreateFadingControls(
2279 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2280
2281 std::list<Button*>::iterator iter;
2282 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2283 toolbar_->AddControl(*iter);
2284 }
2285 }
2286
2287 int Instance::GetToolbarRightOffset() {
2288 int scrollbar_thickness = GetScrollbarThickness();
2289 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2290 }
2291
2292 int Instance::GetToolbarBottomOffset() {
2293 int scrollbar_thickness = GetScrollbarThickness();
2294 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2295 }
2296
2297 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2298 std::vector<pp::ImageData> num_images(10);
2299 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2300 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2301 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2302 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2303 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2304 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2305 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2306 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2307 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2308 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2309 return num_images;
2310 }
2311
2312 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2313 pp::ImageData* background) {
2314 std::vector<pp::ImageData> result(9);
2315 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2316 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2317 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2318 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2319 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2320 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2321 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2322 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2323 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2324 *background = CreateResourceImage(
2325 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2326 return result;
2327 }
2328
2329 void Instance::CreatePageIndicator(bool always_visible) {
2330 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2331 number_image_generator(), always_visible);
2332 ConfigurePageIndicator();
2333 }
2334
2335 void Instance::ConfigurePageIndicator() {
2336 pp::ImageData background =
2337 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2338 page_indicator_.Configure(pp::Point(), background);
2339 }
2340
2341 void Instance::CreateProgressBar() {
2342 pp::ImageData background;
2343 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2344 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2345 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2346 device_scale_, images, background, text);
2347 }
2348
2349 void Instance::ConfigureProgressBar() {
2350 pp::ImageData background;
2351 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2352 progress_bar_.Reconfigure(background, images, device_scale_);
2353 }
2354
2355 void Instance::CreateThumbnails() {
2356 thumbnails_.CreateThumbnailControl(
2357 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2358 number_image_generator());
2359 }
2360
2361 void Instance::LoadUrl(const std::string& url) {
2362 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2363 }
2364
2365 void Instance::LoadPreviewUrl(const std::string& url) {
2366 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2367 }
2368
2369 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2370 void (Instance::* method)(int32_t)) {
2371 pp::URLRequestInfo request(this);
2372 request.SetURL(url);
2373 request.SetMethod("GET");
2374
2375 *loader = CreateURLLoaderInternal();
2376 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2377 int rv = loader->Open(request, callback);
2378 if (rv != PP_OK_COMPLETIONPENDING)
2379 callback.Run(rv);
2380 }
2381
2382 pp::URLLoader Instance::CreateURLLoaderInternal() {
2383 pp::URLLoader loader(this);
2384
2385 const PPB_URLLoaderTrusted* trusted_interface =
2386 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2387 pp::Module::Get()->GetBrowserInterface(
2388 PPB_URLLOADERTRUSTED_INTERFACE));
2389 if (trusted_interface)
2390 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2391 return loader;
2392 }
2393
2394 int Instance::GetInitialPage(const std::string& url) {
2395 size_t found_idx = url.find('#');
2396 if (found_idx == std::string::npos)
2397 return -1;
2398
2399 const std::string& ref = url.substr(found_idx + 1);
2400 std::vector<std::string> fragments;
2401 Tokenize(ref, kDelimiters, &fragments);
2402
2403 // Page number to return, zero-based.
2404 int page = -1;
2405
2406 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2407 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2408 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2409 return engine_->GetNamedDestinationPage(fragments[0]);
2410
2411 for (size_t i = 0; i < fragments.size(); ++i) {
2412 std::vector<std::string> key_value;
2413 base::SplitString(fragments[i], '=', &key_value);
2414 if (key_value.size() != 2)
2415 continue;
2416 const std::string& key = key_value[0];
2417 const std::string& value = key_value[1];
2418
2419 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2420 // |page_value| is 1-based.
2421 int page_value = -1;
2422 if (base::StringToInt(value, &page_value) && page_value > 0)
2423 page = page_value - 1;
2424 continue;
2425 }
2426 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2427 // |page_value| is 0-based.
2428 int page_value = engine_->GetNamedDestinationPage(value);
2429 if (page_value >= 0)
2430 page = page_value;
2431 continue;
2432 }
2433 }
2434 return page;
2435 }
2436
2437 void Instance::UpdateToolbarPosition(bool invalidate) {
2438 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2439 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2440 GetScaled(kToolbarFadingOffsetLeft);
2441 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2442 GetScaled(kToolbarFadingOffsetBottom);
2443
2444 // Update toolbar position
2445 if (plugin_size_.width() < min_toolbar_width ||
2446 plugin_size_.height() < min_toolbar_height) {
2447 // Disable toolbar if it does not fit on the screen.
2448 toolbar_->Show(false, invalidate);
2449 } else {
2450 pp::Point offset(
2451 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2452 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2453 toolbar_->MoveBy(offset, invalidate);
2454
2455 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2456 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2457 toolbar_->Show(painted_first_page_, invalidate);
2458 }
2459 }
2460
2461 void Instance::UpdateProgressBarPosition(bool invalidate) {
2462 // TODO(gene): verify we don't overlap with toolbar.
2463 int scrollbar_thickness = GetScrollbarThickness();
2464 pp::Point progress_origin(
2465 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2466 plugin_size_.height() - progress_bar_.rect().height() -
2467 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2468 progress_bar_.MoveTo(progress_origin, invalidate);
2469 }
2470
2471 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2472 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2473 pp::Point origin(
2474 plugin_size_.width() - page_indicator_.rect().width() -
2475 GetScaled(GetScrollbarReservedThickness()),
2476 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2477 doc_height, plugin_size_.height()));
2478 page_indicator_.MoveTo(origin, invalidate);
2479 }
2480
2481 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2482 double old_zoom = zoom_;
2483
2484 zoom_mode_ = zoom_mode;
2485 if (zoom_mode_ == ZOOM_SCALE)
2486 zoom_ = scale;
2487 UpdateZoomScale();
2488
2489 engine_->ZoomUpdated(zoom_ * device_scale_);
2490 OnGeometryChanged(old_zoom, device_scale_);
2491
2492 // If fit-to-height, snap to the beginning of the most visible page.
2493 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2494 ScrollToPage(engine_->GetMostVisiblePage());
2495 }
2496
2497 // Update sticky buttons to the current zoom style.
2498 Button* ftp_btn = static_cast<Button*>(
2499 toolbar_->GetControl(kFitToPageButtonId));
2500 Button* ftw_btn = static_cast<Button*>(
2501 toolbar_->GetControl(kFitToWidthButtonId));
2502 switch (zoom_mode_) {
2503 case ZOOM_FIT_TO_PAGE:
2504 ftp_btn->SetPressedState(true);
2505 ftw_btn->SetPressedState(false);
2506 break;
2507 case ZOOM_FIT_TO_WIDTH:
2508 ftw_btn->SetPressedState(true);
2509 ftp_btn->SetPressedState(false);
2510 break;
2511 default:
2512 ftw_btn->SetPressedState(false);
2513 ftp_btn->SetPressedState(false);
2514 }
2515 }
2516
2517 void Instance::UpdateZoomScale() {
2518 switch (zoom_mode_) {
2519 case ZOOM_SCALE:
2520 break; // Keep current scale.
2521 case ZOOM_FIT_TO_PAGE: {
2522 int page_num = engine_->GetFirstVisiblePage();
2523 if (page_num == -1)
2524 break;
2525 pp::Rect rc = engine_->GetPageRect(page_num);
2526 if (!rc.height())
2527 break;
2528 // Calculate fit to width zoom level.
2529 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2530 GetScrollbarReservedThickness()) / document_size_.width();
2531 // Calculate fit to height zoom level. If document will not fit
2532 // horizontally, adjust zoom level to allow space for horizontal
2533 // scrollbar.
2534 double fth_zoom =
2535 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2536 if (fth_zoom * document_size_.width() >
2537 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2538 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2539 - GetScrollbarReservedThickness()) / rc.height();
2540 zoom_ = std::min(ftw_zoom, fth_zoom);
2541 } break;
2542 case ZOOM_FIT_TO_WIDTH:
2543 case ZOOM_AUTO:
2544 if (!document_size_.width())
2545 break;
2546 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2547 GetScrollbarReservedThickness()) / document_size_.width();
2548 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2549 zoom_ = 1.0;
2550 break;
2551 }
2552 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2553 }
2554
2555 double Instance::CalculateZoom(uint32 control_id) const {
2556 if (control_id == kZoomInButtonId) {
2557 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2558 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2559 if (current_zoom - content::kEpsilon > zoom_)
2560 return current_zoom;
2561 }
2562 } else {
2563 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2564 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2565 if (current_zoom + content::kEpsilon < zoom_)
2566 return current_zoom;
2567 }
2568 }
2569 return zoom_;
2570 }
2571
2572 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2573 pp::ImageData resource_data;
2574 if (hidpi_enabled_) {
2575 resource_data =
2576 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2577 }
2578
2579 return resource_data.data() ? resource_data
2580 : pp::PDF::GetResourceImage(this, image_id);
2581 }
2582
2583 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2584 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2585 if (!rv.is_string())
2586 return std::string();
2587
2588 return rv.AsString();
2589 }
2590
2591 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2592 std::string str(GetLocalizedString(id));
2593
2594 pp::FontDescription_Dev description;
2595 description.set_family(PP_FONTFAMILY_SANSSERIF);
2596 description.set_size(kMessageTextSize * device_scale_);
2597 pp::Font_Dev font(this, description);
2598 int length = font.MeasureSimpleText(str);
2599 pp::Point point(top_center);
2600 point.set_x(point.x() - length / 2);
2601 DCHECK(!image_data_.is_null());
2602 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2603 }
2604
2605 void Instance::SetPrintPreviewMode(int page_count) {
2606 if (!IsPrintPreview() || page_count <= 0) {
2607 print_preview_page_count_ = 0;
2608 return;
2609 }
2610
2611 print_preview_page_count_ = page_count;
2612 ScrollToPage(0);
2613 engine_->AppendBlankPages(print_preview_page_count_);
2614 if (preview_pages_info_.size() > 0)
2615 LoadAvailablePreviewPage();
2616 }
2617
2618 bool Instance::IsPrintPreview() {
2619 return IsPrintPreviewUrl(url_);
2620 }
2621
2622 int Instance::GetPageNumberToDisplay() {
2623 int page = engine_->GetMostVisiblePage();
2624 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2625 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2626 return print_preview_page_numbers_[page];
2627 }
2628 return page + 1;
2629 }
2630
2631 void Instance::ProcessPreviewPageInfo(const std::string& url,
2632 int dst_page_index) {
2633 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2634 return;
2635
2636 int src_page_index = ExtractPrintPreviewPageIndex(url);
2637 if (src_page_index < 1)
2638 return;
2639
2640 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2641 LoadAvailablePreviewPage();
2642 }
2643
2644 void Instance::LoadAvailablePreviewPage() {
2645 if (preview_pages_info_.size() <= 0)
2646 return;
2647
2648 std::string url = preview_pages_info_.front().first;
2649 int dst_page_index = preview_pages_info_.front().second;
2650 int src_page_index = ExtractPrintPreviewPageIndex(url);
2651 if (src_page_index < 1 ||
2652 dst_page_index >= print_preview_page_count_ ||
2653 preview_document_load_state_ == LOAD_STATE_LOADING) {
2654 return;
2655 }
2656
2657 preview_document_load_state_ = LOAD_STATE_LOADING;
2658 LoadPreviewUrl(url);
2659 }
2660
2661 void Instance::EnableAutoscroll(const pp::Point& origin) {
2662 if (is_autoscroll_)
2663 return;
2664
2665 pp::Size client_size = plugin_size_;
2666 if (v_scrollbar_.get())
2667 client_size.Enlarge(-GetScrollbarThickness(), 0);
2668 if (h_scrollbar_.get())
2669 client_size.Enlarge(0, -GetScrollbarThickness());
2670
2671 // Do not allow autoscroll if client area is too small.
2672 if (autoscroll_anchor_.size().width() > client_size.width() ||
2673 autoscroll_anchor_.size().height() > client_size.height())
2674 return;
2675
2676 autoscroll_rect_ = pp::Rect(
2677 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2678 origin.y() - autoscroll_anchor_.size().height() / 2),
2679 autoscroll_anchor_.size());
2680
2681 // Make sure autoscroll anchor is in the client area.
2682 if (autoscroll_rect_.right() > client_size.width()) {
2683 autoscroll_rect_.set_x(
2684 client_size.width() - autoscroll_anchor_.size().width());
2685 }
2686 if (autoscroll_rect_.bottom() > client_size.height()) {
2687 autoscroll_rect_.set_y(
2688 client_size.height() - autoscroll_anchor_.size().height());
2689 }
2690
2691 if (autoscroll_rect_.x() < 0)
2692 autoscroll_rect_.set_x(0);
2693 if (autoscroll_rect_.y() < 0)
2694 autoscroll_rect_.set_y(0);
2695
2696 is_autoscroll_ = true;
2697 Invalidate(kAutoScrollId, autoscroll_rect_);
2698
2699 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2700 }
2701
2702 void Instance::DisableAutoscroll() {
2703 if (is_autoscroll_) {
2704 is_autoscroll_ = false;
2705 Invalidate(kAutoScrollId, autoscroll_rect_);
2706 }
2707 }
2708
2709 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2710 // Scroll only if mouse pointer is outside of the anchor area.
2711 if (autoscroll_rect_.Contains(mouse_pos)) {
2712 autoscroll_x_ = 0;
2713 autoscroll_y_ = 0;
2714 return PP_CURSORTYPE_MIDDLEPANNING;
2715 }
2716
2717 // Relative position to the center of anchor area.
2718 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2719
2720 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2721 double angle = atan2(static_cast<double>(rel_pos.y()),
2722 static_cast<double>(rel_pos.x()));
2723
2724 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2725 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2726
2727 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2728 // so negative angle represent north direction.
2729 if (angle < - (M_PI * 7.0 / 8.0)) {
2730 // going west
2731 return PP_CURSORTYPE_WESTPANNING;
2732 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2733 // going north-west
2734 return PP_CURSORTYPE_NORTHWESTPANNING;
2735 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2736 // going north.
2737 return PP_CURSORTYPE_NORTHPANNING;
2738 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2739 // going north-east
2740 return PP_CURSORTYPE_NORTHEASTPANNING;
2741 } else if (angle < M_PI * 1.0 / 8.0) {
2742 // going east.
2743 return PP_CURSORTYPE_EASTPANNING;
2744 } else if (angle < M_PI * 3.0 / 8.0) {
2745 // going south-east
2746 return PP_CURSORTYPE_SOUTHEASTPANNING;
2747 } else if (angle < M_PI * 5.0 / 8.0) {
2748 // going south.
2749 return PP_CURSORTYPE_SOUTHPANNING;
2750 } else if (angle < M_PI * 7.0 / 8.0) {
2751 // going south-west
2752 return PP_CURSORTYPE_SOUTHWESTPANNING;
2753 }
2754
2755 // went around the circle, going west again
2756 return PP_CURSORTYPE_WESTPANNING;
2757 }
2758
2759 void Instance::ConfigureNumberImageGenerator() {
2760 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2761 pp::ImageData number_background = CreateResourceImage(
2762 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2763 number_image_generator_->Configure(number_background,
2764 num_images,
2765 device_scale_);
2766 }
2767
2768 NumberImageGenerator* Instance::number_image_generator() {
2769 if (!number_image_generator_.get()) {
2770 number_image_generator_.reset(new NumberImageGenerator(this));
2771 ConfigureNumberImageGenerator();
2772 }
2773 return number_image_generator_.get();
2774 }
2775
2776 int Instance::GetScaled(int x) const {
2777 return static_cast<int>(x * device_scale_);
2778 }
2779
2780 void Instance::UserMetricsRecordAction(const std::string& action) {
2781 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2782 }
2783
2784 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2785 : instance_(instance) {
2786 }
2787
2788 PDFScriptableObject::~PDFScriptableObject() {
2789 }
2790
2791 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2792 return instance_->HasScriptableMethod(name, exception);
2793 }
2794
2795 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2796 const std::vector<pp::Var>& args,
2797 pp::Var* exception) {
2798 return instance_->CallScriptableMethod(method, args, exception);
2799 }
2800
2801 } // namespace chrome_pdf