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[chromium-blink-merge.git] / pdf / instance.cc
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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/common/content_restriction.h"
21 #include "components/ui/zoom/page_zoom_constants.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 const uint32 kBackgroundColor = 0xFFCCCCCC;
60
61 namespace {
62
63 // Uncomment following #define to enable thumbnails.
64 // #define ENABLE_THUMBNAILS
65
66 const uint32 kToolbarSplashTimeoutMs = 6000;
67 const uint32 kMessageTextColor = 0xFF575757;
68 const uint32 kMessageTextSize = 22;
69 const uint32 kProgressFadeTimeoutMs = 250;
70 const uint32 kProgressDelayTimeoutMs = 1000;
71 const uint32 kAutoScrollTimeoutMs = 50;
72 const double kAutoScrollFactor = 0.2;
73
74 // Javascript methods.
75 const char kJSAccessibility[] = "accessibility";
76 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
77 const char kJSGetHeight[] = "getHeight";
78 const char kJSGetHorizontalScrollbarThickness[] =
79 "getHorizontalScrollbarThickness";
80 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
81 const char kJSGetSelectedText[] = "getSelectedText";
82 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
83 const char kJSGetWidth[] = "getWidth";
84 const char kJSGetZoomLevel[] = "getZoomLevel";
85 const char kJSGoToPage[] = "goToPage";
86 const char kJSGrayscale[] = "grayscale";
87 const char kJSLoadPreviewPage[] = "loadPreviewPage";
88 const char kJSOnLoad[] = "onload";
89 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
90 const char kJSOnScroll[] = "onScroll";
91 const char kJSPageXOffset[] = "pageXOffset";
92 const char kJSPageYOffset[] = "pageYOffset";
93 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
94 const char kJSReload[] = "reload";
95 const char kJSRemovePrintButton[] = "removePrintButton";
96 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
97 const char kJSSendKeyEvent[] = "sendKeyEvent";
98 const char kJSSetPageNumbers[] = "setPageNumbers";
99 const char kJSSetPageXOffset[] = "setPageXOffset";
100 const char kJSSetPageYOffset[] = "setPageYOffset";
101 const char kJSSetZoomLevel[] = "setZoomLevel";
102 const char kJSZoomFitToHeight[] = "fitToHeight";
103 const char kJSZoomFitToWidth[] = "fitToWidth";
104 const char kJSZoomIn[] = "zoomIn";
105 const char kJSZoomOut[] = "zoomOut";
106
107 // URL reference parameters.
108 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
109 // document from Adobe.
110 const char kDelimiters[] = "#&";
111 const char kNamedDest[] = "nameddest";
112 const char kPage[] = "page";
113
114 const char kChromePrint[] = "chrome://print/";
115
116 // Dictionary Value key names for the document accessibility info
117 const char kAccessibleNumberOfPages[] = "numberOfPages";
118 const char kAccessibleLoaded[] = "loaded";
119 const char kAccessibleCopyable[] = "copyable";
120
121 const ToolbarButtonInfo kPDFToolbarButtons[] = {
122 { kFitToPageButtonId, Button::BUTTON_STATE,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
124 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
126 { kFitToWidthButtonId, Button::BUTTON_STATE,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
128 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
129 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
130 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
132 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
134 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
136 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
137 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
138 { kSaveButtonId, Button::BUTTON_CLICKABLE,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
140 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
141 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
142 { kPrintButtonId, Button::BUTTON_CLICKABLE,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
144 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
145 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
146 };
147
148 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
149 { kFitToPageButtonId, Button::BUTTON_STATE,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
151 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
153 { kFitToWidthButtonId, Button::BUTTON_STATE,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
155 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
156 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
157 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
159 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
161 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
163 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
164 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
165 { kSaveButtonId, Button::BUTTON_CLICKABLE,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
167 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
168 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
169 { kPrintButtonId, Button::BUTTON_CLICKABLE,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
171 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
172 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
173 };
174
175 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
176 { kFitToPageButtonId, Button::BUTTON_STATE,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
178 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
180 { kFitToWidthButtonId, Button::BUTTON_STATE,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
182 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
183 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
184 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
186 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
188 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
190 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
191 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
192 };
193
194 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
195
196 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
197 pp::Var var;
198 void* object =
199 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
200 if (object)
201 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
202 return var.Detach();
203 }
204
205 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
206 void* object =
207 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
208 if (object) {
209 Instance* obj_instance = static_cast<Instance*>(object);
210 switch (type) {
211 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
212 obj_instance->RotateClockwise();
213 break;
214 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
215 obj_instance->RotateCounterclockwise();
216 break;
217 }
218 }
219 }
220
221 PP_Bool GetPrintPresetOptionsFromDocument(
222 PP_Instance instance,
223 PP_PdfPrintPresetOptions_Dev* options) {
224 void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
225 if (object) {
226 Instance* obj_instance = static_cast<Instance*>(object);
227 obj_instance->GetPrintPresetOptionsFromDocument(options);
228 }
229 return PP_TRUE;
230 }
231
232 const PPP_Pdf ppp_private = {
233 &GetLinkAtPosition,
234 &Transform,
235 &GetPrintPresetOptionsFromDocument
236 };
237
238 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
239 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
240 std::vector<std::string> url_substr;
241 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
242 if (url_substr.size() != 3)
243 return -1;
244
245 if (url_substr[2] != "print.pdf")
246 return -1;
247
248 int page_index = 0;
249 if (!base::StringToInt(url_substr[1], &page_index))
250 return -1;
251 return page_index;
252 }
253
254 bool IsPrintPreviewUrl(const std::string& url) {
255 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
256 }
257
258 void ScalePoint(float scale, pp::Point* point) {
259 point->set_x(static_cast<int>(point->x() * scale));
260 point->set_y(static_cast<int>(point->y() * scale));
261 }
262
263 void ScaleRect(float scale, pp::Rect* rect) {
264 int left = static_cast<int>(floorf(rect->x() * scale));
265 int top = static_cast<int>(floorf(rect->y() * scale));
266 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
267 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
268 rect->SetRect(left, top, right - left, bottom - top);
269 }
270
271 template<class T>
272 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
273 DCHECK(lower_boundary <= upper_boundary);
274 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
275 }
276
277 } // namespace
278
279 Instance::Instance(PP_Instance instance)
280 : pp::InstancePrivate(instance),
281 pp::Find_Private(this),
282 pp::Printing_Dev(this),
283 pp::Selection_Dev(this),
284 pp::WidgetClient_Dev(this),
285 pp::Zoom_Dev(this),
286 cursor_(PP_CURSORTYPE_POINTER),
287 timer_pending_(false),
288 current_timer_id_(0),
289 zoom_(1.0),
290 device_scale_(1.0),
291 printing_enabled_(true),
292 hidpi_enabled_(false),
293 full_(IsFullFrame()),
294 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
295 did_call_start_loading_(false),
296 is_autoscroll_(false),
297 scrollbar_thickness_(-1),
298 scrollbar_reserved_thickness_(-1),
299 current_tb_info_(NULL),
300 current_tb_info_size_(0),
301 paint_manager_(this, this, true),
302 delayed_progress_timer_id_(0),
303 first_paint_(true),
304 painted_first_page_(false),
305 show_page_indicator_(false),
306 document_load_state_(LOAD_STATE_LOADING),
307 preview_document_load_state_(LOAD_STATE_COMPLETE),
308 told_browser_about_unsupported_feature_(false),
309 print_preview_page_count_(0) {
310 loader_factory_.Initialize(this);
311 timer_factory_.Initialize(this);
312 form_factory_.Initialize(this);
313 callback_factory_.Initialize(this);
314 engine_.reset(PDFEngine::Create(this));
315 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
316 AddPerInstanceObject(kPPPPdfInterface, this);
317
318 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
319 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
320 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
321 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
322 }
323
324 Instance::~Instance() {
325 if (timer_pending_) {
326 timer_factory_.CancelAll();
327 timer_pending_ = false;
328 }
329 // The engine may try to access this instance during its destruction.
330 // Make sure this happens early while the instance is still intact.
331 engine_.reset();
332 RemovePerInstanceObject(kPPPPdfInterface, this);
333 }
334
335 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
336 // For now, we hide HiDPI support behind a flag.
337 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
338 hidpi_enabled_ = true;
339
340 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
341 if (printing_enabled_) {
342 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
343 } else {
344 CreateToolbar(kPDFNoPrintToolbarButtons,
345 arraysize(kPDFNoPrintToolbarButtons));
346 }
347
348 CreateProgressBar();
349
350 // Load autoscroll anchor image.
351 autoscroll_anchor_ =
352 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
353
354 #ifdef ENABLE_THUMBNAILS
355 CreateThumbnails();
356 #endif
357 const char* url = NULL;
358 for (uint32_t i = 0; i < argc; ++i) {
359 if (strcmp(argn[i], "src") == 0) {
360 url = argv[i];
361 break;
362 }
363 }
364
365 if (!url)
366 return false;
367
368 CreatePageIndicator(IsPrintPreviewUrl(url));
369
370 if (!full_) {
371 // For PDFs embedded in a frame, we don't get the data automatically like we
372 // do for full-frame loads. Start loading the data manually.
373 LoadUrl(url);
374 } else {
375 DCHECK(!did_call_start_loading_);
376 pp::PDF::DidStartLoading(this);
377 did_call_start_loading_ = true;
378 }
379
380 ZoomLimitsChanged(kMinZoom, kMaxZoom);
381
382 text_input_.reset(new pp::TextInput_Dev(this));
383
384 url_ = url;
385 return engine_->New(url);
386 }
387
388 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
389 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
390 kProgressDelayTimeoutMs);
391 return engine_->HandleDocumentLoad(loader);
392 }
393
394 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
395 // To simplify things, convert the event into device coordinates if it is
396 // a mouse event.
397 pp::InputEvent event_device_res(event);
398 {
399 pp::MouseInputEvent mouse_event(event);
400 if (!mouse_event.is_null()) {
401 pp::Point point = mouse_event.GetPosition();
402 pp::Point movement = mouse_event.GetMovement();
403 ScalePoint(device_scale_, &point);
404 ScalePoint(device_scale_, &movement);
405 mouse_event = pp::MouseInputEvent(
406 this,
407 event.GetType(),
408 event.GetTimeStamp(),
409 event.GetModifiers(),
410 mouse_event.GetButton(),
411 point,
412 mouse_event.GetClickCount(),
413 movement);
414 event_device_res = mouse_event;
415 }
416 }
417
418 // Check if we need to go to autoscroll mode.
419 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
420 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
421 pp::MouseInputEvent mouse_event(event_device_res);
422 pp::Point pos = mouse_event.GetPosition();
423 EnableAutoscroll(pos);
424 UpdateCursor(CalculateAutoscroll(pos));
425 return true;
426 } else {
427 // Quit autoscrolling on any other event.
428 DisableAutoscroll();
429 }
430
431 #ifdef ENABLE_THUMBNAILS
432 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
433 thumbnails_.SlideOut();
434
435 if (thumbnails_.HandleEvent(event_device_res))
436 return true;
437 #endif
438
439 if (!IsMouseOnScrollbar(event_device_res) &&
440 toolbar_->HandleEvent(event_device_res))
441 return true;
442
443 #ifdef ENABLE_THUMBNAILS
444 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
445 pp::MouseInputEvent mouse_event(event);
446 pp::Point pt = mouse_event.GetPosition();
447 pp::Rect v_scrollbar_rc;
448 v_scrollbar_->GetLocation(&v_scrollbar_rc);
449 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
450 // in the webkit that makes event.u.mouse.button
451 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
452 // To work around this issue we use modifier for now, and will switch
453 // to button once the bug is fixed and webkit got merged back to our tree.
454 if (v_scrollbar_rc.Contains(pt) &&
455 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
456 thumbnails_.SlideIn();
457 }
458
459 // When scrollbar is in the scrolling mode we should display thumbnails
460 // even the mouse is outside the thumbnail and scrollbar areas.
461 // If mouse is outside plugin area, we are still getting mouse move events
462 // while scrolling. See bug description for details:
463 // http://code.google.com/p/chromium/issues/detail?id=56444
464 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
465 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
466 !thumbnails_.rect().Contains(pt)) {
467 thumbnails_.SlideOut();
468 }
469 }
470 #endif
471
472 // Need to pass the event to the engine first, since if we're over an edit
473 // control we want it to get keyboard events (like space) instead of the
474 // scrollbar.
475 // TODO: will have to offset the mouse coordinates once we support bidi and
476 // there could be scrollbars on the left.
477 pp::InputEvent offset_event(event_device_res);
478 bool try_engine_first = true;
479 switch (offset_event.GetType()) {
480 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
481 case PP_INPUTEVENT_TYPE_MOUSEUP:
482 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
483 case PP_INPUTEVENT_TYPE_MOUSEENTER:
484 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
485 pp::MouseInputEvent mouse_event(event_device_res);
486 pp::MouseInputEvent mouse_event_dip(event);
487 pp::Point point = mouse_event.GetPosition();
488 point.set_x(point.x() - available_area_.x());
489 offset_event = pp::MouseInputEvent(
490 this,
491 event.GetType(),
492 event.GetTimeStamp(),
493 event.GetModifiers(),
494 mouse_event.GetButton(),
495 point,
496 mouse_event.GetClickCount(),
497 mouse_event.GetMovement());
498 if (!engine_->IsSelecting()) {
499 if (!IsOverlayScrollbar() &&
500 !available_area_.Contains(mouse_event.GetPosition())) {
501 try_engine_first = false;
502 } else if (IsOverlayScrollbar() && IsMouseOnScrollbar(event)) {
503 try_engine_first = false;
504 }
505 }
506 break;
507 }
508 default:
509 break;
510 }
511 if (try_engine_first && engine_->HandleEvent(offset_event))
512 return true;
513
514 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
515 // there is no horizontal scroll bar.
516 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
517 // Prev/Next page. Spacebar / shift+spacebar should do the same.
518 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
519 pp::KeyboardInputEvent keyboard_event(event);
520 bool no_h_scrollbar = !h_scrollbar_.get();
521 uint32_t key_code = keyboard_event.GetKeyCode();
522 bool has_modifiers = keyboard_event.GetModifiers() != 0;
523 bool page_down =
524 no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_RIGHT;
525 bool page_up =
526 no_h_scrollbar && !has_modifiers && key_code == ui::VKEY_LEFT;
527 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
528 bool has_shift =
529 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
530 bool key_is_space = key_code == ui::VKEY_SPACE;
531 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
532 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
533 }
534 if (page_down) {
535 int page = engine_->GetFirstVisiblePage();
536 if (page == -1)
537 return true;
538 // Engine calculates visible page including delimiter to the page size.
539 // We need to check here if the page itself is completely out of view and
540 // scroll to the next one in that case.
541 if (engine_->GetPageRect(page).bottom() * zoom_ <=
542 v_scrollbar_->GetValue())
543 page++;
544 ScrollToPage(page + 1);
545 UpdateCursor(PP_CURSORTYPE_POINTER);
546 return true;
547 } else if (page_up) {
548 int page = engine_->GetFirstVisiblePage();
549 if (page == -1)
550 return true;
551 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
552 page--;
553 ScrollToPage(page);
554 UpdateCursor(PP_CURSORTYPE_POINTER);
555 return true;
556 }
557 }
558
559 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
560 UpdateCursor(PP_CURSORTYPE_POINTER);
561 return true;
562 }
563
564 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
565 UpdateCursor(PP_CURSORTYPE_POINTER);
566 return true;
567 }
568
569 if (timer_pending_ &&
570 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
571 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
572 timer_factory_.CancelAll();
573 timer_pending_ = false;
574 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
575 engine_->IsSelecting()) {
576 bool set_timer = false;
577 pp::MouseInputEvent mouse_event(event);
578 if (v_scrollbar_.get() &&
579 (mouse_event.GetPosition().y() <= 0 ||
580 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
581 v_scrollbar_->ScrollBy(
582 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
583 set_timer = true;
584 }
585 if (h_scrollbar_.get() &&
586 (mouse_event.GetPosition().x() <= 0 ||
587 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
588 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
589 mouse_event.GetPosition().x() >= 0 ? 1: -1);
590 set_timer = true;
591 }
592
593 if (set_timer) {
594 last_mouse_event_ = pp::MouseInputEvent(event);
595
596 pp::CompletionCallback callback =
597 timer_factory_.NewCallback(&Instance::OnTimerFired);
598 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
599 timer_pending_ = true;
600 }
601 }
602
603 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
604 pp::KeyboardInputEvent keyboard_event(event);
605 const uint32 modifier = event.GetModifiers();
606 if (modifier & kDefaultKeyModifier) {
607 switch (keyboard_event.GetKeyCode()) {
608 case 'A':
609 engine_->SelectAll();
610 return true;
611 }
612 }
613 if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
614 switch (keyboard_event.GetKeyCode()) {
615 case ui::VKEY_OEM_4:
616 // Left bracket.
617 engine_->RotateCounterclockwise();
618 return true;
619 case ui::VKEY_OEM_6:
620 // Right bracket.
621 engine_->RotateClockwise();
622 return true;
623 }
624 }
625 }
626
627 // Return true for unhandled clicks so the plugin takes focus.
628 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
629 }
630
631 void Instance::DidChangeView(const pp::View& view) {
632 pp::Rect view_rect(view.GetRect());
633 float device_scale = 1.0f;
634 float old_device_scale = device_scale_;
635 if (hidpi_enabled_)
636 device_scale = view.GetDeviceScale();
637 pp::Size view_device_size(view_rect.width() * device_scale,
638 view_rect.height() * device_scale);
639 if (view_device_size == plugin_size_ && device_scale == device_scale_)
640 return; // We don't care about the position, only the size.
641
642 image_data_ = pp::ImageData();
643 device_scale_ = device_scale;
644 plugin_dip_size_ = view_rect.size();
645 plugin_size_ = view_device_size;
646
647 paint_manager_.SetSize(view_device_size, device_scale_);
648
649 image_data_ = pp::ImageData(this,
650 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
651 plugin_size_,
652 false);
653 if (image_data_.is_null()) {
654 DCHECK(plugin_size_.IsEmpty());
655 return;
656 }
657
658 // View dimensions changed, disable autoscroll (if it was enabled).
659 DisableAutoscroll();
660
661 OnGeometryChanged(zoom_, old_device_scale);
662 }
663
664 pp::Var Instance::GetInstanceObject() {
665 if (instance_object_.is_undefined()) {
666 PDFScriptableObject* object = new PDFScriptableObject(this);
667 // The pp::Var takes ownership of object here.
668 instance_object_ = pp::VarPrivate(this, object);
669 }
670
671 return instance_object_;
672 }
673
674 void Instance::GetPrintPresetOptionsFromDocument(
675 PP_PdfPrintPresetOptions_Dev* options) {
676 options->is_scaling_disabled = PP_FromBool(IsPrintScalingDisabled());
677 options->duplex =
678 static_cast<PP_PrivateDuplexMode_Dev>(engine_->GetDuplexType());
679 options->copies = engine_->GetCopiesToPrint();
680 pp::Size uniform_page_size;
681 options->is_page_size_uniform =
682 PP_FromBool(engine_->GetPageSizeAndUniformity(&uniform_page_size));
683 options->uniform_page_size = PP_Size(uniform_page_size);
684 }
685
686 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
687 pp::Point offset_point(point);
688 ScalePoint(device_scale_, &offset_point);
689 offset_point.set_x(offset_point.x() - available_area_.x());
690 return engine_->GetLinkAtPosition(offset_point);
691 }
692
693 pp::Var Instance::GetSelectedText(bool html) {
694 if (html)
695 return pp::Var();
696 return engine_->GetSelectedText();
697 }
698
699 void Instance::InvalidateWidget(pp::Widget_Dev widget,
700 const pp::Rect& dirty_rect) {
701 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
702 if (!image_data_.is_null())
703 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
704 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
705 if (!image_data_.is_null())
706 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
707 } else {
708 // Possible to hit this condition since sometimes the scrollbar codes posts
709 // a task to do something later, and we could have deleted our reference in
710 // the meantime.
711 return;
712 }
713
714 pp::Rect dirty_rect_scaled = dirty_rect;
715 ScaleRect(device_scale_, &dirty_rect_scaled);
716 paint_manager_.InvalidateRect(dirty_rect_scaled);
717 }
718
719 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
720 uint32_t value) {
721 value = GetScaled(value);
722 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
723 engine_->ScrolledToYPosition(value);
724 pp::Rect rc;
725 v_scrollbar_->GetLocation(&rc);
726 int32 doc_height = GetDocumentPixelHeight();
727 doc_height -= GetScaled(rc.height());
728 #ifdef ENABLE_THUMBNAILS
729 if (thumbnails_.visible()) {
730 thumbnails_.SetPosition(value, doc_height, true);
731 }
732 #endif
733 pp::Point origin(
734 plugin_size_.width() - page_indicator_.rect().width() -
735 GetScaled(GetScrollbarReservedThickness()),
736 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
737 page_indicator_.MoveTo(origin, page_indicator_.visible());
738 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
739 engine_->ScrolledToXPosition(value);
740 }
741 }
742
743 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
744 bool overlay) {
745 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
746 OnGeometryChanged(zoom_, device_scale_);
747 }
748
749 uint32_t Instance::QuerySupportedPrintOutputFormats() {
750 return engine_->QuerySupportedPrintOutputFormats();
751 }
752
753 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
754 // For us num_pages is always equal to the number of pages in the PDF
755 // document irrespective of the printable area.
756 int32_t ret = engine_->GetNumberOfPages();
757 if (!ret)
758 return 0;
759
760 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
761 if ((print_settings.format & supported_formats) == 0)
762 return 0;
763
764 print_settings_.is_printing = true;
765 print_settings_.pepper_print_settings = print_settings;
766 engine_->PrintBegin();
767 return ret;
768 }
769
770 pp::Resource Instance::PrintPages(
771 const PP_PrintPageNumberRange_Dev* page_ranges,
772 uint32_t page_range_count) {
773 if (!print_settings_.is_printing)
774 return pp::Resource();
775
776 print_settings_.print_pages_called_ = true;
777 return engine_->PrintPages(page_ranges, page_range_count,
778 print_settings_.pepper_print_settings);
779 }
780
781 void Instance::PrintEnd() {
782 if (print_settings_.print_pages_called_)
783 UserMetricsRecordAction("PDF.PrintPage");
784 print_settings_.Clear();
785 engine_->PrintEnd();
786 }
787
788 bool Instance::IsPrintScalingDisabled() {
789 return !engine_->GetPrintScaling();
790 }
791
792 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
793 engine_->StartFind(text.c_str(), case_sensitive);
794 return true;
795 }
796
797 void Instance::SelectFindResult(bool forward) {
798 engine_->SelectFindResult(forward);
799 }
800
801 void Instance::StopFind() {
802 engine_->StopFind();
803 }
804
805 void Instance::Zoom(double scale, bool text_only) {
806 UserMetricsRecordAction("PDF.ZoomFromBrowser");
807
808 // If the zoom level doesn't change it means that this zoom change might have
809 // been initiated by the plugin. In that case, we don't want to change the
810 // zoom mode to ZOOM_SCALE as it may have been intentionally set to
811 // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
812 if (scale == zoom_)
813 return;
814
815 SetZoom(ZOOM_SCALE, scale);
816 }
817
818 void Instance::ZoomChanged(double factor) {
819 if (full_)
820 Zoom_Dev::ZoomChanged(factor);
821 }
822
823 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
824 std::vector<PaintManager::ReadyRect>* ready,
825 std::vector<pp::Rect>* pending) {
826 if (image_data_.is_null()) {
827 DCHECK(plugin_size_.IsEmpty());
828 return;
829 }
830 if (first_paint_) {
831 first_paint_ = false;
832 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
833 FillRect(rect, kBackgroundColor);
834 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
835 *pending = paint_rects;
836 return;
837 }
838
839 engine_->PrePaint();
840
841 for (size_t i = 0; i < paint_rects.size(); i++) {
842 // Intersect with plugin area since there could be pending invalidates from
843 // when the plugin area was larger.
844 pp::Rect rect =
845 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
846 if (rect.IsEmpty())
847 continue;
848
849 pp::Rect pdf_rect = available_area_.Intersect(rect);
850 if (!pdf_rect.IsEmpty()) {
851 pdf_rect.Offset(available_area_.x() * -1, 0);
852
853 std::vector<pp::Rect> pdf_ready;
854 std::vector<pp::Rect> pdf_pending;
855 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
856 for (size_t j = 0; j < pdf_ready.size(); ++j) {
857 pdf_ready[j].Offset(available_area_.point());
858 ready->push_back(
859 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
860 }
861 for (size_t j = 0; j < pdf_pending.size(); ++j) {
862 pdf_pending[j].Offset(available_area_.point());
863 pending->push_back(pdf_pending[j]);
864 }
865 }
866
867 for (size_t j = 0; j < background_parts_.size(); ++j) {
868 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
869 if (!intersection.IsEmpty()) {
870 FillRect(intersection, background_parts_[j].color);
871 ready->push_back(
872 PaintManager::ReadyRect(intersection, image_data_, false));
873 }
874 }
875
876 if (document_load_state_ == LOAD_STATE_FAILED) {
877 pp::Point top_center;
878 top_center.set_x(plugin_size_.width() / 2);
879 top_center.set_y(plugin_size_.height() / 2);
880 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
881 }
882
883 #ifdef ENABLE_THUMBNAILS
884 thumbnails_.Paint(&image_data_, rect);
885 #endif
886 }
887
888 engine_->PostPaint();
889
890 // Must paint scrollbars after the background parts, in case we have an
891 // overlay scrollbar that's over the background. We also do this in a separate
892 // loop because the scrollbar painting logic uses the signal of whether there
893 // are pending paints or not to figure out if it should draw right away or
894 // not.
895 for (size_t i = 0; i < paint_rects.size(); i++) {
896 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
897 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
898 }
899
900 if (progress_bar_.visible())
901 PaintOverlayControl(&progress_bar_, &image_data_, ready);
902
903 if (page_indicator_.visible())
904 PaintOverlayControl(&page_indicator_, &image_data_, ready);
905
906 if (toolbar_->current_transparency() != kTransparentAlpha)
907 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
908
909 // Paint autoscroll anchor if needed.
910 if (is_autoscroll_) {
911 size_t limit = ready->size();
912 for (size_t i = 0; i < limit; i++) {
913 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
914 if (!anchor_rect.IsEmpty()) {
915 pp::Rect draw_rc = pp::Rect(
916 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
917 anchor_rect.y() - autoscroll_rect_.y()),
918 anchor_rect.size());
919 // Paint autoscroll anchor.
920 AlphaBlend(autoscroll_anchor_, draw_rc,
921 &image_data_, anchor_rect.point(), kOpaqueAlpha);
922 }
923 }
924 }
925 }
926
927 void Instance::PaintOverlayControl(
928 Control* ctrl,
929 pp::ImageData* image_data,
930 std::vector<PaintManager::ReadyRect>* ready) {
931 // Make sure that we only paint overlay controls over an area that's ready,
932 // i.e. not pending. Otherwise we'll mark the control rect as ready and
933 // it'll overwrite the pdf region.
934 std::list<pp::Rect> ctrl_rects;
935 for (size_t i = 0; i < ready->size(); i++) {
936 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
937 if (!rc.IsEmpty())
938 ctrl_rects.push_back(rc);
939 }
940
941 if (!ctrl_rects.empty()) {
942 ctrl->PaintMultipleRects(image_data, ctrl_rects);
943
944 std::list<pp::Rect>::iterator iter;
945 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
946 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
947 }
948 }
949 }
950
951 void Instance::DidOpen(int32_t result) {
952 if (result == PP_OK) {
953 engine_->HandleDocumentLoad(embed_loader_);
954 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
955 NOTREACHED();
956 }
957 }
958
959 void Instance::DidOpenPreview(int32_t result) {
960 if (result == PP_OK) {
961 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
962 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
963 } else {
964 NOTREACHED();
965 }
966 }
967
968 void Instance::PaintIfWidgetIntersects(
969 pp::Widget_Dev* widget,
970 const pp::Rect& rect,
971 std::vector<PaintManager::ReadyRect>* ready,
972 std::vector<pp::Rect>* pending) {
973 if (!widget)
974 return;
975
976 pp::Rect location;
977 if (!widget->GetLocation(&location))
978 return;
979
980 ScaleRect(device_scale_, &location);
981 location = location.Intersect(rect);
982 if (location.IsEmpty())
983 return;
984
985 if (IsOverlayScrollbar()) {
986 // If we're using overlay scrollbars, and there are pending paints under the
987 // scrollbar, don't update the scrollbar instantly. While it would be nice,
988 // we would need to double buffer the plugin area in order to make this
989 // work. This is because we'd need to always have a copy of what the pdf
990 // under the scrollbar looks like, and additionally we couldn't paint the
991 // pdf under the scrollbar if it's ready until we got the preceding flush.
992 // So in practice, it would make painting slower and introduce extra buffer
993 // copies for the general case.
994 for (size_t i = 0; i < pending->size(); ++i) {
995 if ((*pending)[i].Intersects(location))
996 return;
997 }
998
999 // Even if none of the pending paints are under the scrollbar, we never want
1000 // to paint it if it's over the pdf if there are other pending paints.
1001 // Otherwise different parts of the pdf plugin would display at different
1002 // scroll offsets.
1003 if (!pending->empty() && available_area_.Intersects(rect)) {
1004 pending->push_back(location);
1005 return;
1006 }
1007 }
1008
1009 pp::Rect location_dip = location;
1010 ScaleRect(1.0f / device_scale_, &location_dip);
1011
1012 DCHECK(!image_data_.is_null());
1013 widget->Paint(location_dip, &image_data_);
1014
1015 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
1016 }
1017
1018 void Instance::OnTimerFired(int32_t) {
1019 HandleInputEvent(last_mouse_event_);
1020 }
1021
1022 void Instance::OnClientTimerFired(int32_t id) {
1023 engine_->OnCallback(id);
1024 }
1025
1026 void Instance::OnControlTimerFired(int32_t,
1027 const uint32& control_id,
1028 const uint32& timer_id) {
1029 if (control_id == toolbar_->id()) {
1030 toolbar_->OnTimerFired(timer_id);
1031 } else if (control_id == progress_bar_.id()) {
1032 if (timer_id == delayed_progress_timer_id_) {
1033 if (document_load_state_ == LOAD_STATE_LOADING &&
1034 !progress_bar_.visible()) {
1035 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1036 }
1037 delayed_progress_timer_id_ = 0;
1038 } else {
1039 progress_bar_.OnTimerFired(timer_id);
1040 }
1041 } else if (control_id == kAutoScrollId) {
1042 if (is_autoscroll_) {
1043 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1044 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1045 }
1046 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1047 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1048 }
1049
1050 // Reschedule timer.
1051 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1052 }
1053 } else if (control_id == kPageIndicatorId) {
1054 page_indicator_.OnTimerFired(timer_id);
1055 }
1056 #ifdef ENABLE_THUMBNAILS
1057 else if (control_id == thumbnails_.id()) {
1058 thumbnails_.OnTimerFired(timer_id);
1059 }
1060 #endif
1061 }
1062
1063 void Instance::CalculateBackgroundParts() {
1064 background_parts_.clear();
1065 int v_scrollbar_thickness =
1066 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1067 int h_scrollbar_thickness =
1068 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1069 int width_without_scrollbar = std::max(
1070 plugin_size_.width() - v_scrollbar_thickness, 0);
1071 int height_without_scrollbar = std::max(
1072 plugin_size_.height() - h_scrollbar_thickness, 0);
1073 int left_width = available_area_.x();
1074 int right_start = available_area_.right();
1075 int right_width = abs(width_without_scrollbar - available_area_.right());
1076 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1077
1078 // Add the left, right, and bottom rectangles. Note: we assume only
1079 // horizontal centering.
1080 BackgroundPart part = {
1081 pp::Rect(0, 0, left_width, bottom),
1082 kBackgroundColor
1083 };
1084 if (!part.location.IsEmpty())
1085 background_parts_.push_back(part);
1086 part.location = pp::Rect(right_start, 0, right_width, bottom);
1087 if (!part.location.IsEmpty())
1088 background_parts_.push_back(part);
1089 part.location = pp::Rect(
1090 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1091 if (!part.location.IsEmpty())
1092 background_parts_.push_back(part);
1093
1094 if (h_scrollbar_thickness
1095 #if defined(OS_MACOSX)
1096 ||
1097 #else
1098 &&
1099 #endif
1100 v_scrollbar_thickness) {
1101 part.color = 0xFFFFFFFF;
1102 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1103 plugin_size_.height() - h_scrollbar_thickness,
1104 h_scrollbar_thickness,
1105 v_scrollbar_thickness);
1106 background_parts_.push_back(part);
1107 }
1108 }
1109
1110 int Instance::GetDocumentPixelWidth() const {
1111 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1112 }
1113
1114 int Instance::GetDocumentPixelHeight() const {
1115 return static_cast<int>(ceil(document_size_.height() *
1116 zoom_ *
1117 device_scale_));
1118 }
1119
1120 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1121 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1122 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1123 int stride = image_data_.stride();
1124 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1125 int height = rect.height();
1126 int width = rect.width();
1127 for (int y = 0; y < height; ++y) {
1128 for (int x = 0; x < width; ++x)
1129 *(ptr + x) = color;
1130 ptr += stride / 4;
1131 }
1132 }
1133
1134 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1135 document_size_ = size;
1136
1137 OnGeometryChanged(zoom_, device_scale_);
1138 }
1139
1140 void Instance::Invalidate(const pp::Rect& rect) {
1141 pp::Rect offset_rect(rect);
1142 offset_rect.Offset(available_area_.point());
1143 paint_manager_.InvalidateRect(offset_rect);
1144 }
1145
1146 void Instance::Scroll(const pp::Point& point) {
1147 pp::Rect scroll_area = available_area_;
1148 if (IsOverlayScrollbar()) {
1149 pp::Rect rc;
1150 if (h_scrollbar_.get()) {
1151 h_scrollbar_->GetLocation(&rc);
1152 ScaleRect(device_scale_, &rc);
1153 if (scroll_area.bottom() > rc.y()) {
1154 scroll_area.set_height(rc.y() - scroll_area.y());
1155 paint_manager_.InvalidateRect(rc);
1156 }
1157 }
1158 if (v_scrollbar_.get()) {
1159 v_scrollbar_->GetLocation(&rc);
1160 ScaleRect(device_scale_, &rc);
1161 if (scroll_area.right() > rc.x()) {
1162 scroll_area.set_width(rc.x() - scroll_area.x());
1163 paint_manager_.InvalidateRect(rc);
1164 }
1165 }
1166 }
1167 paint_manager_.ScrollRect(scroll_area, point);
1168
1169 if (toolbar_->current_transparency() != kTransparentAlpha)
1170 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1171
1172 if (progress_bar_.visible())
1173 paint_manager_.InvalidateRect(progress_bar_.rect());
1174
1175 if (is_autoscroll_)
1176 paint_manager_.InvalidateRect(autoscroll_rect_);
1177
1178 if (show_page_indicator_) {
1179 page_indicator_.set_current_page(GetPageNumberToDisplay());
1180 page_indicator_.Splash();
1181 }
1182
1183 if (page_indicator_.visible())
1184 paint_manager_.InvalidateRect(page_indicator_.rect());
1185
1186 // Run the scroll callback asynchronously. This function can be invoked by a
1187 // layout change which should not re-enter into JS synchronously.
1188 pp::CompletionCallback callback =
1189 callback_factory_.NewCallback(&Instance::RunCallback,
1190 on_scroll_callback_);
1191 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1192 }
1193
1194 void Instance::ScrollToX(int position) {
1195 if (!h_scrollbar_.get()) {
1196 NOTREACHED();
1197 return;
1198 }
1199 int position_dip = static_cast<int>(position / device_scale_);
1200 h_scrollbar_->SetValue(position_dip);
1201 }
1202
1203 void Instance::ScrollToY(int position) {
1204 if (!v_scrollbar_.get()) {
1205 NOTREACHED();
1206 return;
1207 }
1208 int position_dip = static_cast<int>(position / device_scale_);
1209 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1210 }
1211
1212 void Instance::ScrollToPage(int page) {
1213 if (!v_scrollbar_.get())
1214 return;
1215
1216 if (engine_->GetNumberOfPages() == 0)
1217 return;
1218
1219 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1220 pp::Rect rect = engine_->GetPageRect(index);
1221 // If we are trying to scroll pass the last page,
1222 // scroll to the end of the last page.
1223 int position = index < page ? rect.bottom() : rect.y();
1224 ScrollToY(position * zoom_ * device_scale_);
1225 }
1226
1227 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1228 std::string url_copy(url);
1229
1230 // Empty |url_copy| is ok, and will effectively be a reload.
1231 // Skip the code below so an empty URL does not turn into "http://", which
1232 // will cause GURL to fail a DCHECK.
1233 if (!url_copy.empty()) {
1234 // If |url_copy| starts with '#', then it's for the same URL with a
1235 // different URL fragment.
1236 if (url_copy[0] == '#') {
1237 // if '#' is already present in |url_| then remove old fragment and add
1238 // new |url_copy| fragment.
1239 std::size_t index = url_.find('#');
1240 if (index != std::string::npos)
1241 url_copy = url_.substr(0, index) + url_copy;
1242 else
1243 url_copy = url_ + url_copy;
1244 // Changing the href does not actually do anything when navigating in the
1245 // same tab, so do the actual page scroll here. Then fall through so the
1246 // href gets updated.
1247 if (!open_in_new_tab) {
1248 int page_number = GetInitialPage(url_copy);
1249 if (page_number >= 0)
1250 ScrollToPage(page_number);
1251 }
1252 }
1253 // If there's no scheme, add http.
1254 if (url_copy.find("://") == std::string::npos &&
1255 url_copy.find("mailto:") == std::string::npos) {
1256 url_copy = "http://" + url_copy;
1257 }
1258 // Make sure |url_copy| starts with a valid scheme.
1259 if (url_copy.find("http://") != 0 &&
1260 url_copy.find("https://") != 0 &&
1261 url_copy.find("ftp://") != 0 &&
1262 url_copy.find("file://") != 0 &&
1263 url_copy.find("mailto:") != 0) {
1264 return;
1265 }
1266 // Make sure |url_copy| is not only a scheme.
1267 if (url_copy == "http://" ||
1268 url_copy == "https://" ||
1269 url_copy == "ftp://" ||
1270 url_copy == "file://" ||
1271 url_copy == "mailto:") {
1272 return;
1273 }
1274 }
1275 if (open_in_new_tab) {
1276 GetWindowObject().Call("open", url_copy);
1277 } else {
1278 GetWindowObject().GetProperty("top").GetProperty("location").
1279 SetProperty("href", url_copy);
1280 }
1281 }
1282
1283 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1284 if (cursor == cursor_)
1285 return;
1286 cursor_ = cursor;
1287
1288 const PPB_CursorControl_Dev* cursor_interface =
1289 reinterpret_cast<const PPB_CursorControl_Dev*>(
1290 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1291 if (!cursor_interface) {
1292 NOTREACHED();
1293 return;
1294 }
1295
1296 cursor_interface->SetCursor(
1297 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1298 }
1299
1300 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1301 if (!v_scrollbar_.get())
1302 return;
1303
1304 float inverse_scale = 1.0f / device_scale_;
1305 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1306 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1307 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1308 }
1309
1310 v_scrollbar_->SetTickMarks(
1311 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1312 }
1313
1314 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1315 NumberOfFindResultsChanged(total, final_result);
1316 }
1317
1318 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1319 DCHECK_GE(current_find_index, 0);
1320 SelectedFindResultChanged(current_find_index);
1321 }
1322
1323 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1324 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1325 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1326 switch (control_id) {
1327 case kFitToPageButtonId:
1328 UserMetricsRecordAction("PDF.FitToPageButton");
1329 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1330 ZoomChanged(zoom_);
1331 break;
1332 case kFitToWidthButtonId:
1333 UserMetricsRecordAction("PDF.FitToWidthButton");
1334 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1335 ZoomChanged(zoom_);
1336 break;
1337 case kZoomOutButtonId:
1338 case kZoomInButtonId:
1339 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1340 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1341 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1342 ZoomChanged(zoom_);
1343 break;
1344 case kSaveButtonId:
1345 UserMetricsRecordAction("PDF.SaveButton");
1346 SaveAs();
1347 break;
1348 case kPrintButtonId:
1349 UserMetricsRecordAction("PDF.PrintButton");
1350 Print();
1351 break;
1352 }
1353 }
1354 if (control_id == kThumbnailsId &&
1355 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1356 int page = *static_cast<int*>(data);
1357 pp::Rect page_rc(engine_->GetPageRect(page));
1358 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1359 }
1360 }
1361
1362 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1363 paint_manager_.InvalidateRect(rc);
1364 }
1365
1366 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1367 current_timer_id_++;
1368 pp::CompletionCallback callback =
1369 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1370 control_id,
1371 current_timer_id_);
1372 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1373 return current_timer_id_;
1374 }
1375
1376 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1377 // TODO(gene): set event capture here.
1378 }
1379
1380 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1381 UpdateCursor(cursor_type);
1382 }
1383
1384 pp::Instance* Instance::GetInstance() {
1385 return this;
1386 }
1387
1388 void Instance::GetDocumentPassword(
1389 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1390 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1391 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1392 *callback.output() = result.pp_var();
1393 callback.Run(PP_OK);
1394 }
1395
1396 void Instance::Alert(const std::string& message) {
1397 GetWindowObject().Call("alert", message);
1398 }
1399
1400 bool Instance::Confirm(const std::string& message) {
1401 pp::Var result = GetWindowObject().Call("confirm", message);
1402 return result.is_bool() ? result.AsBool() : false;
1403 }
1404
1405 std::string Instance::Prompt(const std::string& question,
1406 const std::string& default_answer) {
1407 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1408 return result.is_string() ? result.AsString() : std::string();
1409 }
1410
1411 std::string Instance::GetURL() {
1412 return url_;
1413 }
1414
1415 void Instance::Email(const std::string& to,
1416 const std::string& cc,
1417 const std::string& bcc,
1418 const std::string& subject,
1419 const std::string& body) {
1420 std::string javascript =
1421 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1422 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1423 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1424 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1425 "&body=" + net::EscapeUrlEncodedData(body, false) +
1426 "';var temp = window.open(href, '_blank', " +
1427 "'width=1,height=1');if(temp) temp.close();";
1428 ExecuteScript(javascript);
1429 }
1430
1431 void Instance::Print() {
1432 if (!printing_enabled_ ||
1433 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1434 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1435 return;
1436 }
1437
1438 pp::CompletionCallback callback =
1439 callback_factory_.NewCallback(&Instance::OnPrint);
1440 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1441 }
1442
1443 void Instance::OnPrint(int32_t) {
1444 pp::PDF::Print(this);
1445 }
1446
1447 void Instance::SaveAs() {
1448 pp::PDF::SaveAs(this);
1449 }
1450
1451 void Instance::SubmitForm(const std::string& url,
1452 const void* data,
1453 int length) {
1454 pp::URLRequestInfo request(this);
1455 request.SetURL(url);
1456 request.SetMethod("POST");
1457 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1458
1459 pp::CompletionCallback callback =
1460 form_factory_.NewCallback(&Instance::FormDidOpen);
1461 form_loader_ = CreateURLLoaderInternal();
1462 int rv = form_loader_.Open(request, callback);
1463 if (rv != PP_OK_COMPLETIONPENDING)
1464 callback.Run(rv);
1465 }
1466
1467 void Instance::FormDidOpen(int32_t result) {
1468 // TODO: inform the user of success/failure.
1469 if (result != PP_OK) {
1470 NOTREACHED();
1471 }
1472 }
1473
1474 std::string Instance::ShowFileSelectionDialog() {
1475 // Seems like very low priority to implement, since the pdf has no way to get
1476 // the file data anyways. Javascript doesn't let you do this synchronously.
1477 NOTREACHED();
1478 return std::string();
1479 }
1480
1481 pp::URLLoader Instance::CreateURLLoader() {
1482 if (full_) {
1483 if (!did_call_start_loading_) {
1484 did_call_start_loading_ = true;
1485 pp::PDF::DidStartLoading(this);
1486 }
1487
1488 // Disable save and print until the document is fully loaded, since they
1489 // would generate an incomplete document. Need to do this each time we
1490 // call DidStartLoading since that resets the content restrictions.
1491 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1492 CONTENT_RESTRICTION_PRINT);
1493 }
1494
1495 return CreateURLLoaderInternal();
1496 }
1497
1498 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1499 pp::CompletionCallback callback =
1500 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1501 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1502 }
1503
1504 void Instance::SearchString(const base::char16* string,
1505 const base::char16* term,
1506 bool case_sensitive,
1507 std::vector<SearchStringResult>* results) {
1508 if (!pp::PDF::IsAvailable()) {
1509 NOTREACHED();
1510 return;
1511 }
1512
1513 PP_PrivateFindResult* pp_results;
1514 int count = 0;
1515 pp::PDF::SearchString(
1516 this,
1517 reinterpret_cast<const unsigned short*>(string),
1518 reinterpret_cast<const unsigned short*>(term),
1519 case_sensitive,
1520 &pp_results,
1521 &count);
1522
1523 results->resize(count);
1524 for (int i = 0; i < count; ++i) {
1525 (*results)[i].start_index = pp_results[i].start_index;
1526 (*results)[i].length = pp_results[i].length;
1527 }
1528
1529 pp::Memory_Dev memory;
1530 memory.MemFree(pp_results);
1531 }
1532
1533 void Instance::DocumentPaintOccurred() {
1534 if (painted_first_page_)
1535 return;
1536
1537 painted_first_page_ = true;
1538 UpdateToolbarPosition(false);
1539 toolbar_->Splash(kToolbarSplashTimeoutMs);
1540
1541 if (engine_->GetNumberOfPages() > 1)
1542 show_page_indicator_ = true;
1543 else
1544 show_page_indicator_ = false;
1545
1546 if (v_scrollbar_.get() && show_page_indicator_) {
1547 page_indicator_.set_current_page(GetPageNumberToDisplay());
1548 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1549 kPageIndicatorInitialFadeTimeoutMs);
1550 }
1551 }
1552
1553 void Instance::DocumentLoadComplete(int page_count) {
1554 // Clear focus state for OSK.
1555 FormTextFieldFocusChange(false);
1556
1557 // Update progress control.
1558 if (progress_bar_.visible())
1559 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1560
1561 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1562 document_load_state_ = LOAD_STATE_COMPLETE;
1563 UserMetricsRecordAction("PDF.LoadSuccess");
1564
1565 if (did_call_start_loading_) {
1566 pp::PDF::DidStopLoading(this);
1567 did_call_start_loading_ = false;
1568 }
1569
1570 if (on_load_callback_.is_string())
1571 ExecuteScript(on_load_callback_);
1572 // Note: If we are in print preview mode on_load_callback_ might call
1573 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1574 // #page=N is not supported in Print Preview.
1575 if (!IsPrintPreview()) {
1576 int initial_page = GetInitialPage(url_);
1577 if (initial_page >= 0)
1578 ScrollToPage(initial_page);
1579 }
1580
1581 if (!full_)
1582 return;
1583 if (!pp::PDF::IsAvailable())
1584 return;
1585
1586 int content_restrictions =
1587 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1588 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1589 content_restrictions |= CONTENT_RESTRICTION_COPY;
1590
1591 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1592 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1593 printing_enabled_ = false;
1594 if (current_tb_info_ == kPDFToolbarButtons) {
1595 // Remove Print button.
1596 CreateToolbar(kPDFNoPrintToolbarButtons,
1597 arraysize(kPDFNoPrintToolbarButtons));
1598 UpdateToolbarPosition(false);
1599 Invalidate(pp::Rect(plugin_size_));
1600 }
1601 }
1602
1603 pp::PDF::SetContentRestriction(this, content_restrictions);
1604
1605 pp::PDF::HistogramPDFPageCount(this, page_count);
1606 }
1607
1608 void Instance::RotateClockwise() {
1609 engine_->RotateClockwise();
1610 }
1611
1612 void Instance::RotateCounterclockwise() {
1613 engine_->RotateCounterclockwise();
1614 }
1615
1616 bool Instance::IsMouseOnScrollbar(const pp::InputEvent& event) {
1617 pp::MouseInputEvent mouse_event(event);
1618 if (mouse_event.is_null())
1619 return false;
1620
1621 pp::Point pt = mouse_event.GetPosition();
1622 pp::Rect temp;
1623 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
1624 temp.Contains(pt)) ||
1625 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
1626 temp.Contains(pt))) {
1627 return true;
1628 }
1629 return false;
1630 }
1631
1632 void Instance::PreviewDocumentLoadComplete() {
1633 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1634 preview_pages_info_.empty()) {
1635 return;
1636 }
1637
1638 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1639
1640 int dest_page_index = preview_pages_info_.front().second;
1641 int src_page_index =
1642 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1643 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1644 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1645
1646 preview_pages_info_.pop();
1647 // |print_preview_page_count_| is not updated yet. Do not load any
1648 // other preview pages till we get this information.
1649 if (print_preview_page_count_ == 0)
1650 return;
1651
1652 if (preview_pages_info_.size())
1653 LoadAvailablePreviewPage();
1654 }
1655
1656 void Instance::DocumentLoadFailed() {
1657 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1658 UserMetricsRecordAction("PDF.LoadFailure");
1659
1660 // Hide progress control.
1661 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1662
1663 if (did_call_start_loading_) {
1664 pp::PDF::DidStopLoading(this);
1665 did_call_start_loading_ = false;
1666 }
1667
1668 document_load_state_ = LOAD_STATE_FAILED;
1669 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1670 }
1671
1672 void Instance::PreviewDocumentLoadFailed() {
1673 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1674 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1675 preview_pages_info_.empty()) {
1676 return;
1677 }
1678
1679 preview_document_load_state_ = LOAD_STATE_FAILED;
1680 preview_pages_info_.pop();
1681
1682 if (preview_pages_info_.size())
1683 LoadAvailablePreviewPage();
1684 }
1685
1686 pp::Instance* Instance::GetPluginInstance() {
1687 return GetInstance();
1688 }
1689
1690 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1691 std::string metric("PDF_Unsupported_");
1692 metric += feature;
1693 if (!unsupported_features_reported_.count(metric)) {
1694 unsupported_features_reported_.insert(metric);
1695 UserMetricsRecordAction(metric);
1696 }
1697
1698 // Since we use an info bar, only do this for full frame plugins..
1699 if (!full_)
1700 return;
1701
1702 if (told_browser_about_unsupported_feature_)
1703 return;
1704 told_browser_about_unsupported_feature_ = true;
1705
1706 pp::PDF::HasUnsupportedFeature(this);
1707 }
1708
1709 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1710 double progress = 0.0;
1711 if (doc_size == 0) {
1712 // Document size is unknown. Use heuristics.
1713 // We'll make progress logarithmic from 0 to 100M.
1714 static const double kFactor = log(100000000.0) / 100.0;
1715 if (available > 0) {
1716 progress = log(static_cast<double>(available)) / kFactor;
1717 if (progress > 100.0)
1718 progress = 100.0;
1719 }
1720 } else {
1721 progress = 100.0 * static_cast<double>(available) / doc_size;
1722 }
1723 progress_bar_.SetProgress(progress);
1724 }
1725
1726 void Instance::FormTextFieldFocusChange(bool in_focus) {
1727 if (!text_input_.get())
1728 return;
1729 if (in_focus)
1730 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1731 else
1732 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1733 }
1734
1735 // Called by PDFScriptableObject.
1736 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1737 std::string method_str = method.AsString();
1738 return (method_str == kJSAccessibility ||
1739 method_str == kJSDocumentLoadComplete ||
1740 method_str == kJSGetHeight ||
1741 method_str == kJSGetHorizontalScrollbarThickness ||
1742 method_str == kJSGetPageLocationNormalized ||
1743 method_str == kJSGetSelectedText ||
1744 method_str == kJSGetVerticalScrollbarThickness ||
1745 method_str == kJSGetWidth ||
1746 method_str == kJSGetZoomLevel ||
1747 method_str == kJSGoToPage ||
1748 method_str == kJSGrayscale ||
1749 method_str == kJSLoadPreviewPage ||
1750 method_str == kJSOnLoad ||
1751 method_str == kJSOnPluginSizeChanged ||
1752 method_str == kJSOnScroll ||
1753 method_str == kJSPageXOffset ||
1754 method_str == kJSPageYOffset ||
1755 method_str == kJSPrintPreviewPageCount ||
1756 method_str == kJSReload ||
1757 method_str == kJSRemovePrintButton ||
1758 method_str == kJSResetPrintPreviewUrl ||
1759 method_str == kJSSendKeyEvent ||
1760 method_str == kJSSetPageNumbers ||
1761 method_str == kJSSetPageXOffset ||
1762 method_str == kJSSetPageYOffset ||
1763 method_str == kJSSetZoomLevel ||
1764 method_str == kJSZoomFitToHeight ||
1765 method_str == kJSZoomFitToWidth ||
1766 method_str == kJSZoomIn ||
1767 method_str == kJSZoomOut);
1768 }
1769
1770 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1771 const std::vector<pp::Var>& args,
1772 pp::Var* exception) {
1773 std::string method_str = method.AsString();
1774 if (method_str == kJSGrayscale) {
1775 if (args.size() == 1 && args[0].is_bool()) {
1776 engine_->SetGrayscale(args[0].AsBool());
1777 // Redraw
1778 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1779 #ifdef ENABLE_THUMBNAILS
1780 if (thumbnails_.visible())
1781 thumbnails_.Show(true, true);
1782 #endif
1783 return pp::Var(true);
1784 }
1785 return pp::Var(false);
1786 }
1787 if (method_str == kJSOnLoad) {
1788 if (args.size() == 1 && args[0].is_string()) {
1789 on_load_callback_ = args[0];
1790 return pp::Var(true);
1791 }
1792 return pp::Var(false);
1793 }
1794 if (method_str == kJSOnScroll) {
1795 if (args.size() == 1 && args[0].is_string()) {
1796 on_scroll_callback_ = args[0];
1797 return pp::Var(true);
1798 }
1799 return pp::Var(false);
1800 }
1801 if (method_str == kJSOnPluginSizeChanged) {
1802 if (args.size() == 1 && args[0].is_string()) {
1803 on_plugin_size_changed_callback_ = args[0];
1804 return pp::Var(true);
1805 }
1806 return pp::Var(false);
1807 }
1808 if (method_str == kJSReload) {
1809 document_load_state_ = LOAD_STATE_LOADING;
1810 if (!full_)
1811 LoadUrl(url_);
1812 preview_engine_.reset();
1813 print_preview_page_count_ = 0;
1814 engine_.reset(PDFEngine::Create(this));
1815 engine_->New(url_.c_str());
1816 #ifdef ENABLE_THUMBNAILS
1817 thumbnails_.ResetEngine(engine_.get());
1818 #endif
1819 return pp::Var();
1820 }
1821 if (method_str == kJSResetPrintPreviewUrl) {
1822 if (args.size() == 1 && args[0].is_string()) {
1823 url_ = args[0].AsString();
1824 preview_pages_info_ = std::queue<PreviewPageInfo>();
1825 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1826 }
1827 return pp::Var();
1828 }
1829 if (method_str == kJSZoomFitToHeight) {
1830 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1831 return pp::Var();
1832 }
1833 if (method_str == kJSZoomFitToWidth) {
1834 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1835 return pp::Var();
1836 }
1837 if (method_str == kJSZoomIn) {
1838 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1839 return pp::Var();
1840 }
1841 if (method_str == kJSZoomOut) {
1842 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1843 return pp::Var();
1844 }
1845 if (method_str == kJSSetZoomLevel) {
1846 if (args.size() == 1 && args[0].is_number())
1847 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1848 return pp::Var();
1849 }
1850 if (method_str == kJSGetZoomLevel) {
1851 return pp::Var(zoom_);
1852 }
1853 if (method_str == kJSGetHeight) {
1854 return pp::Var(plugin_size_.height());
1855 }
1856 if (method_str == kJSGetWidth) {
1857 return pp::Var(plugin_size_.width());
1858 }
1859 if (method_str == kJSGetHorizontalScrollbarThickness) {
1860 return pp::Var(
1861 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1862 }
1863 if (method_str == kJSGetVerticalScrollbarThickness) {
1864 return pp::Var(
1865 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1866 }
1867 if (method_str == kJSGetSelectedText) {
1868 std::string selected_text = engine_->GetSelectedText();
1869 // Always return unix newlines to JS.
1870 base::ReplaceChars(selected_text, "\r", std::string(), &selected_text);
1871 return selected_text;
1872 }
1873 if (method_str == kJSDocumentLoadComplete) {
1874 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1875 }
1876 if (method_str == kJSPageYOffset) {
1877 return pp::Var(static_cast<int32_t>(
1878 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1879 }
1880 if (method_str == kJSSetPageYOffset) {
1881 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1882 ScrollToY(GetScaled(args[0].AsInt()));
1883 return pp::Var();
1884 }
1885 if (method_str == kJSPageXOffset) {
1886 return pp::Var(static_cast<int32_t>(
1887 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1888 }
1889 if (method_str == kJSSetPageXOffset) {
1890 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1891 ScrollToX(GetScaled(args[0].AsInt()));
1892 return pp::Var();
1893 }
1894 if (method_str == kJSRemovePrintButton) {
1895 CreateToolbar(kPrintPreviewToolbarButtons,
1896 arraysize(kPrintPreviewToolbarButtons));
1897 UpdateToolbarPosition(false);
1898 Invalidate(pp::Rect(plugin_size_));
1899 return pp::Var();
1900 }
1901 if (method_str == kJSGoToPage) {
1902 if (args.size() == 1 && args[0].is_string()) {
1903 ScrollToPage(atoi(args[0].AsString().c_str()));
1904 }
1905 return pp::Var();
1906 }
1907 if (method_str == kJSAccessibility) {
1908 if (args.size() == 0) {
1909 base::DictionaryValue node;
1910 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1911 node.SetBoolean(kAccessibleLoaded,
1912 document_load_state_ != LOAD_STATE_LOADING);
1913 bool has_permissions =
1914 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1915 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1916 node.SetBoolean(kAccessibleCopyable, has_permissions);
1917 std::string json;
1918 base::JSONWriter::Write(&node, &json);
1919 return pp::Var(json);
1920 } else if (args[0].is_number()) {
1921 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1922 }
1923 }
1924 if (method_str == kJSPrintPreviewPageCount) {
1925 if (args.size() == 1 && args[0].is_number())
1926 SetPrintPreviewMode(args[0].AsInt());
1927 return pp::Var();
1928 }
1929 if (method_str == kJSLoadPreviewPage) {
1930 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1931 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1932 return pp::Var();
1933 }
1934 if (method_str == kJSGetPageLocationNormalized) {
1935 const size_t kMaxLength = 30;
1936 char location_info[kMaxLength];
1937 int page_idx = engine_->GetMostVisiblePage();
1938 if (page_idx < 0)
1939 return pp::Var(std::string());
1940 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1941 int v_scrollbar_reserved_thickness =
1942 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1943
1944 rect.set_x(rect.x() + ((plugin_size_.width() -
1945 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1946 base::snprintf(location_info,
1947 kMaxLength,
1948 "%0.4f;%0.4f;%0.4f;%0.4f;",
1949 rect.x() / static_cast<float>(plugin_size_.width()),
1950 rect.y() / static_cast<float>(plugin_size_.height()),
1951 rect.width() / static_cast<float>(plugin_size_.width()),
1952 rect.height()/ static_cast<float>(plugin_size_.height()));
1953 return pp::Var(std::string(location_info));
1954 }
1955 if (method_str == kJSSetPageNumbers) {
1956 if (args.size() != 1 || !args[0].is_string())
1957 return pp::Var();
1958 const int num_pages_signed = engine_->GetNumberOfPages();
1959 if (num_pages_signed <= 0)
1960 return pp::Var();
1961 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1962 base::JSONReader::Read(args[0].AsString(), false)));
1963 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1964 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1965 return pp::Var();
1966
1967 std::vector<int> print_preview_page_numbers;
1968 for (size_t index = 0; index < num_pages; ++index) {
1969 int page_number = 0; // |page_number| is 1-based.
1970 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1971 return pp::Var();
1972 print_preview_page_numbers.push_back(page_number);
1973 }
1974 print_preview_page_numbers_ = print_preview_page_numbers;
1975 page_indicator_.set_current_page(GetPageNumberToDisplay());
1976 return pp::Var();
1977 }
1978 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1979 // In JS, creating a synthetic keyboard event and dispatching it always
1980 // result in a keycode of 0.
1981 if (method_str == kJSSendKeyEvent) {
1982 if (args.size() == 1 && args[0].is_number()) {
1983 pp::KeyboardInputEvent event(
1984 this, // instance
1985 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1986 0, // timestamp, not used for kbd events.
1987 0, // no modifiers.
1988 args[0].AsInt(), // keycode.
1989 pp::Var()); // no char text needed.
1990 HandleInputEvent(event);
1991 }
1992 }
1993 return pp::Var();
1994 }
1995
1996 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1997 bool force_no_horizontal_scrollbar = false;
1998 int scrollbar_thickness = GetScrollbarThickness();
1999
2000 if (old_device_scale != device_scale_) {
2001 // Change in device scale forces us to recreate resources
2002 ConfigureNumberImageGenerator();
2003
2004 CreateToolbar(current_tb_info_, current_tb_info_size_);
2005 // Load autoscroll anchor image.
2006 autoscroll_anchor_ =
2007 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
2008
2009 ConfigurePageIndicator();
2010 ConfigureProgressBar();
2011
2012 pp::Point scroll_position = engine_->GetScrollPosition();
2013 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
2014 engine_->SetScrollPosition(scroll_position);
2015 }
2016
2017 UpdateZoomScale();
2018 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
2019 engine_->ZoomUpdated(zoom_ * device_scale_);
2020 if (zoom_ != old_zoom)
2021 ZoomChanged(zoom_);
2022
2023 available_area_ = pp::Rect(plugin_size_);
2024 if (GetDocumentPixelHeight() > plugin_size_.height()) {
2025 CreateVerticalScrollbar();
2026 } else {
2027 DestroyVerticalScrollbar();
2028 }
2029
2030 int v_scrollbar_reserved_thickness =
2031 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
2032
2033 if (!force_no_horizontal_scrollbar &&
2034 GetDocumentPixelWidth() >
2035 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
2036 CreateHorizontalScrollbar();
2037
2038 // Adding the horizontal scrollbar now might cause us to need vertical
2039 // scrollbars.
2040 if (GetDocumentPixelHeight() >
2041 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
2042 CreateVerticalScrollbar();
2043 }
2044
2045 } else {
2046 DestroyHorizontalScrollbar();
2047 }
2048
2049 #ifdef ENABLE_THUMBNAILS
2050 int thumbnails_pos = 0, thumbnails_total = 0;
2051 #endif
2052 if (v_scrollbar_.get()) {
2053 v_scrollbar_->SetScale(device_scale_);
2054 available_area_.set_width(
2055 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
2056
2057 #ifdef ENABLE_THUMBNAILS
2058 int height = plugin_size_.height();
2059 #endif
2060 int height_dip = plugin_dip_size_.height();
2061
2062 #if defined(OS_MACOSX)
2063 // Before Lion, Mac always had the resize at the bottom. After that, it
2064 // never did.
2065 if ((base::mac::IsOSSnowLeopard() && full_) ||
2066 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2067 #else
2068 if (h_scrollbar_.get()) {
2069 #endif // defined(OS_MACOSX)
2070 #ifdef ENABLE_THUMBNAILS
2071 height -= GetScaled(GetScrollbarThickness());
2072 #endif
2073 height_dip -= GetScrollbarThickness();
2074 }
2075 #ifdef ENABLE_THUMBNAILS
2076 int32 doc_height = GetDocumentPixelHeight();
2077 #endif
2078 int32 doc_height_dip =
2079 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2080 #if defined(OS_MACOSX)
2081 // On the Mac we always allow room for the resize button (whose width is
2082 // the same as that of the scrollbar) in full mode. However, if there is no
2083 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2084 // end of the document. This is because the scrollbar assumes that its own
2085 // height (in the case of a vscroll bar) is the same as the height of the
2086 // viewport. Since the viewport is actually larger, we compensate by
2087 // adjusting the document height. Similar logic applies below for the
2088 // horizontal scrollbar.
2089 // For example, if the document size is 1000, and the viewport size is 200,
2090 // then the scrollbar position at the end will be 800. In this case the
2091 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2092 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2093 // be 785. Making the document size 985 achieves this.
2094 if (full_ && !h_scrollbar_.get()) {
2095 #ifdef ENABLE_THUMBNAILS
2096 doc_height -= GetScaled(GetScrollbarThickness());
2097 #endif
2098 doc_height_dip -= GetScrollbarThickness();
2099 }
2100 #endif // defined(OS_MACOSX)
2101
2102 int32 position;
2103 position = v_scrollbar_->GetValue();
2104 position = static_cast<int>(position * zoom_ / old_zoom);
2105 valid_v_range_ = doc_height_dip - height_dip;
2106 if (position > valid_v_range_)
2107 position = valid_v_range_;
2108
2109 v_scrollbar_->SetValue(position);
2110
2111 PP_Rect loc;
2112 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2113 if (IsOverlayScrollbar())
2114 loc.point.x -= scrollbar_thickness;
2115 loc.point.y = 0;
2116 loc.size.width = scrollbar_thickness;
2117 loc.size.height = height_dip;
2118 v_scrollbar_->SetLocation(loc);
2119 v_scrollbar_->SetDocumentSize(doc_height_dip);
2120
2121 #ifdef ENABLE_THUMBNAILS
2122 thumbnails_pos = position;
2123 thumbnails_total = doc_height - height;
2124 #endif
2125 }
2126
2127 if (h_scrollbar_.get()) {
2128 h_scrollbar_->SetScale(device_scale_);
2129 available_area_.set_height(
2130 std::max(0, plugin_size_.height() -
2131 GetScaled(GetScrollbarReservedThickness())));
2132
2133 int width_dip = plugin_dip_size_.width();
2134
2135 // See note above.
2136 #if defined(OS_MACOSX)
2137 if ((base::mac::IsOSSnowLeopard() && full_) ||
2138 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2139 #else
2140 if (v_scrollbar_.get()) {
2141 #endif
2142 width_dip -= GetScrollbarThickness();
2143 }
2144 int32 doc_width_dip =
2145 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2146 #if defined(OS_MACOSX)
2147 // See comment in the above if (v_scrollbar_.get()) block.
2148 if (full_ && !v_scrollbar_.get())
2149 doc_width_dip -= GetScrollbarThickness();
2150 #endif // defined(OS_MACOSX)
2151
2152 int32 position;
2153 position = h_scrollbar_->GetValue();
2154 position = static_cast<int>(position * zoom_ / old_zoom);
2155 position = std::min(position, doc_width_dip - width_dip);
2156
2157 h_scrollbar_->SetValue(position);
2158
2159 PP_Rect loc;
2160 loc.point.x = 0;
2161 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2162 if (IsOverlayScrollbar())
2163 loc.point.y -= scrollbar_thickness;
2164 loc.size.width = width_dip;
2165 loc.size.height = scrollbar_thickness;
2166 h_scrollbar_->SetLocation(loc);
2167 h_scrollbar_->SetDocumentSize(doc_width_dip);
2168 }
2169
2170 int doc_width = GetDocumentPixelWidth();
2171 if (doc_width < available_area_.width()) {
2172 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2173 available_area_.set_width(doc_width);
2174 }
2175 int doc_height = GetDocumentPixelHeight();
2176 if (doc_height < available_area_.height()) {
2177 available_area_.set_height(doc_height);
2178 }
2179
2180 // We'll invalidate the entire plugin anyways.
2181 UpdateToolbarPosition(false);
2182 UpdateProgressBarPosition(false);
2183 UpdatePageIndicatorPosition(false);
2184
2185 #ifdef ENABLE_THUMBNAILS
2186 // Update thumbnail control position.
2187 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2188 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2189 GetScaled(kThumbnailsWidth), plugin_size_.height());
2190 if (v_scrollbar_.get())
2191 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2192 if (h_scrollbar_.get())
2193 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2194 thumbnails_.SetRect(thumbnails_rc, false);
2195 #endif
2196
2197 CalculateBackgroundParts();
2198 engine_->PageOffsetUpdated(available_area_.point());
2199 engine_->PluginSizeUpdated(available_area_.size());
2200
2201 if (!document_size_.GetArea())
2202 return;
2203 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2204
2205 // Run the plugin size change callback asynchronously. This function can be
2206 // invoked by a layout change which should not re-enter into JS synchronously.
2207 pp::CompletionCallback callback =
2208 callback_factory_.NewCallback(&Instance::RunCallback,
2209 on_plugin_size_changed_callback_);
2210 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2211 }
2212
2213 void Instance::RunCallback(int32_t, pp::Var callback) {
2214 if (callback.is_string())
2215 ExecuteScript(callback);
2216 }
2217
2218 void Instance::CreateHorizontalScrollbar() {
2219 if (h_scrollbar_.get())
2220 return;
2221
2222 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2223 }
2224
2225 void Instance::CreateVerticalScrollbar() {
2226 if (v_scrollbar_.get())
2227 return;
2228
2229 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2230 }
2231
2232 void Instance::DestroyHorizontalScrollbar() {
2233 if (!h_scrollbar_.get())
2234 return;
2235 if (h_scrollbar_->GetValue())
2236 engine_->ScrolledToXPosition(0);
2237 h_scrollbar_.reset();
2238 }
2239
2240 void Instance::DestroyVerticalScrollbar() {
2241 if (!v_scrollbar_.get())
2242 return;
2243 if (v_scrollbar_->GetValue())
2244 engine_->ScrolledToYPosition(0);
2245 v_scrollbar_.reset();
2246 page_indicator_.Show(false, true);
2247 }
2248
2249 int Instance::GetScrollbarThickness() {
2250 if (scrollbar_thickness_ == -1) {
2251 pp::Scrollbar_Dev temp_scrollbar(this, false);
2252 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2253 scrollbar_reserved_thickness_ =
2254 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2255 }
2256
2257 return scrollbar_thickness_;
2258 }
2259
2260 int Instance::GetScrollbarReservedThickness() {
2261 GetScrollbarThickness();
2262 return scrollbar_reserved_thickness_;
2263 }
2264
2265 bool Instance::IsOverlayScrollbar() {
2266 return GetScrollbarReservedThickness() == 0;
2267 }
2268
2269 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2270 toolbar_.reset(new FadingControls());
2271
2272 DCHECK(tb_info);
2273 DCHECK(size >= 0);
2274
2275 // Remember the current toolbar information in case we need to recreate the
2276 // images later.
2277 current_tb_info_ = tb_info;
2278 current_tb_info_size_ = size;
2279
2280 int max_height = 0;
2281 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2282 ScalePoint(device_scale_, &origin);
2283
2284 std::list<Button*> buttons;
2285 for (size_t i = 0; i < size; i++) {
2286 Button* btn = new Button;
2287 pp::ImageData normal_face =
2288 CreateResourceImage(tb_info[i].normal);
2289 btn->CreateButton(tb_info[i].id,
2290 origin,
2291 true,
2292 toolbar_.get(),
2293 tb_info[i].style,
2294 normal_face,
2295 CreateResourceImage(tb_info[i].highlighted),
2296 CreateResourceImage(tb_info[i].pressed));
2297 buttons.push_back(btn);
2298
2299 origin += pp::Point(normal_face.size().width(), 0);
2300 max_height = std::max(max_height, normal_face.size().height());
2301 }
2302
2303 pp::Rect rc_toolbar(0, 0,
2304 origin.x() + GetToolbarRightOffset(),
2305 origin.y() + max_height + GetToolbarBottomOffset());
2306 toolbar_->CreateFadingControls(
2307 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2308
2309 std::list<Button*>::iterator iter;
2310 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2311 toolbar_->AddControl(*iter);
2312 }
2313 }
2314
2315 int Instance::GetToolbarRightOffset() {
2316 int scrollbar_thickness = GetScrollbarThickness();
2317 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2318 }
2319
2320 int Instance::GetToolbarBottomOffset() {
2321 int scrollbar_thickness = GetScrollbarThickness();
2322 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2323 }
2324
2325 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2326 std::vector<pp::ImageData> num_images(10);
2327 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2328 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2329 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2330 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2331 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2332 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2333 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2334 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2335 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2336 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2337 return num_images;
2338 }
2339
2340 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2341 pp::ImageData* background) {
2342 std::vector<pp::ImageData> result(9);
2343 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2344 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2345 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2346 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2347 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2348 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2349 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2350 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2351 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2352 *background = CreateResourceImage(
2353 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2354 return result;
2355 }
2356
2357 void Instance::CreatePageIndicator(bool always_visible) {
2358 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2359 number_image_generator(), always_visible);
2360 ConfigurePageIndicator();
2361 }
2362
2363 void Instance::ConfigurePageIndicator() {
2364 pp::ImageData background =
2365 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2366 page_indicator_.Configure(pp::Point(), background);
2367 }
2368
2369 void Instance::CreateProgressBar() {
2370 pp::ImageData background;
2371 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2372 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2373 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2374 device_scale_, images, background, text);
2375 }
2376
2377 void Instance::ConfigureProgressBar() {
2378 pp::ImageData background;
2379 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2380 progress_bar_.Reconfigure(background, images, device_scale_);
2381 }
2382
2383 void Instance::CreateThumbnails() {
2384 thumbnails_.CreateThumbnailControl(
2385 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2386 number_image_generator());
2387 }
2388
2389 void Instance::LoadUrl(const std::string& url) {
2390 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2391 }
2392
2393 void Instance::LoadPreviewUrl(const std::string& url) {
2394 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2395 }
2396
2397 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2398 void (Instance::* method)(int32_t)) {
2399 pp::URLRequestInfo request(this);
2400 request.SetURL(url);
2401 request.SetMethod("GET");
2402
2403 *loader = CreateURLLoaderInternal();
2404 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2405 int rv = loader->Open(request, callback);
2406 if (rv != PP_OK_COMPLETIONPENDING)
2407 callback.Run(rv);
2408 }
2409
2410 pp::URLLoader Instance::CreateURLLoaderInternal() {
2411 pp::URLLoader loader(this);
2412
2413 const PPB_URLLoaderTrusted* trusted_interface =
2414 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2415 pp::Module::Get()->GetBrowserInterface(
2416 PPB_URLLOADERTRUSTED_INTERFACE));
2417 if (trusted_interface)
2418 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2419 return loader;
2420 }
2421
2422 int Instance::GetInitialPage(const std::string& url) {
2423 size_t found_idx = url.find('#');
2424 if (found_idx == std::string::npos)
2425 return -1;
2426
2427 const std::string& ref = url.substr(found_idx + 1);
2428 std::vector<std::string> fragments;
2429 Tokenize(ref, kDelimiters, &fragments);
2430
2431 // Page number to return, zero-based.
2432 int page = -1;
2433
2434 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2435 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2436 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2437 return engine_->GetNamedDestinationPage(fragments[0]);
2438
2439 for (size_t i = 0; i < fragments.size(); ++i) {
2440 std::vector<std::string> key_value;
2441 base::SplitString(fragments[i], '=', &key_value);
2442 if (key_value.size() != 2)
2443 continue;
2444 const std::string& key = key_value[0];
2445 const std::string& value = key_value[1];
2446
2447 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2448 // |page_value| is 1-based.
2449 int page_value = -1;
2450 if (base::StringToInt(value, &page_value) && page_value > 0)
2451 page = page_value - 1;
2452 continue;
2453 }
2454 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2455 // |page_value| is 0-based.
2456 int page_value = engine_->GetNamedDestinationPage(value);
2457 if (page_value >= 0)
2458 page = page_value;
2459 continue;
2460 }
2461 }
2462 return page;
2463 }
2464
2465 void Instance::UpdateToolbarPosition(bool invalidate) {
2466 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2467 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2468 GetScaled(kToolbarFadingOffsetLeft);
2469 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2470 GetScaled(kToolbarFadingOffsetBottom);
2471
2472 // Update toolbar position
2473 if (plugin_size_.width() < min_toolbar_width ||
2474 plugin_size_.height() < min_toolbar_height) {
2475 // Disable toolbar if it does not fit on the screen.
2476 toolbar_->Show(false, invalidate);
2477 } else {
2478 pp::Point offset(
2479 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2480 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2481 toolbar_->MoveBy(offset, invalidate);
2482
2483 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2484 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2485 toolbar_->Show(painted_first_page_, invalidate);
2486 }
2487 }
2488
2489 void Instance::UpdateProgressBarPosition(bool invalidate) {
2490 // TODO(gene): verify we don't overlap with toolbar.
2491 int scrollbar_thickness = GetScrollbarThickness();
2492 pp::Point progress_origin(
2493 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2494 plugin_size_.height() - progress_bar_.rect().height() -
2495 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2496 progress_bar_.MoveTo(progress_origin, invalidate);
2497 }
2498
2499 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2500 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2501 pp::Point origin(
2502 plugin_size_.width() - page_indicator_.rect().width() -
2503 GetScaled(GetScrollbarReservedThickness()),
2504 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2505 doc_height, plugin_size_.height()));
2506 page_indicator_.MoveTo(origin, invalidate);
2507 }
2508
2509 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2510 double old_zoom = zoom_;
2511
2512 zoom_mode_ = zoom_mode;
2513 if (zoom_mode_ == ZOOM_SCALE)
2514 zoom_ = scale;
2515 UpdateZoomScale();
2516
2517 engine_->ZoomUpdated(zoom_ * device_scale_);
2518 OnGeometryChanged(old_zoom, device_scale_);
2519
2520 // If fit-to-height, snap to the beginning of the most visible page.
2521 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2522 ScrollToPage(engine_->GetMostVisiblePage());
2523 }
2524
2525 // Update sticky buttons to the current zoom style.
2526 Button* ftp_btn = static_cast<Button*>(
2527 toolbar_->GetControl(kFitToPageButtonId));
2528 Button* ftw_btn = static_cast<Button*>(
2529 toolbar_->GetControl(kFitToWidthButtonId));
2530 switch (zoom_mode_) {
2531 case ZOOM_FIT_TO_PAGE:
2532 ftp_btn->SetPressedState(true);
2533 ftw_btn->SetPressedState(false);
2534 break;
2535 case ZOOM_FIT_TO_WIDTH:
2536 ftw_btn->SetPressedState(true);
2537 ftp_btn->SetPressedState(false);
2538 break;
2539 default:
2540 ftw_btn->SetPressedState(false);
2541 ftp_btn->SetPressedState(false);
2542 }
2543 }
2544
2545 void Instance::UpdateZoomScale() {
2546 switch (zoom_mode_) {
2547 case ZOOM_SCALE:
2548 break; // Keep current scale.
2549 case ZOOM_FIT_TO_PAGE: {
2550 int page_num = engine_->GetFirstVisiblePage();
2551 if (page_num == -1)
2552 break;
2553 pp::Rect rc = engine_->GetPageRect(page_num);
2554 if (!rc.height())
2555 break;
2556 // Calculate fit to width zoom level.
2557 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2558 GetScrollbarReservedThickness()) / document_size_.width();
2559 // Calculate fit to height zoom level. If document will not fit
2560 // horizontally, adjust zoom level to allow space for horizontal
2561 // scrollbar.
2562 double fth_zoom =
2563 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2564 if (fth_zoom * document_size_.width() >
2565 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2566 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2567 - GetScrollbarReservedThickness()) / rc.height();
2568 zoom_ = std::min(ftw_zoom, fth_zoom);
2569 } break;
2570 case ZOOM_FIT_TO_WIDTH:
2571 case ZOOM_AUTO:
2572 if (!document_size_.width())
2573 break;
2574 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2575 GetScrollbarReservedThickness()) / document_size_.width();
2576 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2577 zoom_ = 1.0;
2578 break;
2579 }
2580 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2581 }
2582
2583 double Instance::CalculateZoom(uint32 control_id) const {
2584 if (control_id == kZoomInButtonId) {
2585 for (size_t i = 0; i < ui_zoom::kPresetZoomFactorsSize; ++i) {
2586 double current_zoom = ui_zoom::kPresetZoomFactors[i];
2587 if (current_zoom - content::kEpsilon > zoom_)
2588 return current_zoom;
2589 }
2590 } else {
2591 for (size_t i = ui_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2592 double current_zoom = ui_zoom::kPresetZoomFactors[i - 1];
2593 if (current_zoom + content::kEpsilon < zoom_)
2594 return current_zoom;
2595 }
2596 }
2597 return zoom_;
2598 }
2599
2600 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2601 pp::ImageData resource_data;
2602 if (hidpi_enabled_) {
2603 resource_data =
2604 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2605 }
2606
2607 return resource_data.data() ? resource_data
2608 : pp::PDF::GetResourceImage(this, image_id);
2609 }
2610
2611 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2612 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2613 if (!rv.is_string())
2614 return std::string();
2615
2616 return rv.AsString();
2617 }
2618
2619 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2620 std::string str(GetLocalizedString(id));
2621
2622 pp::FontDescription_Dev description;
2623 description.set_family(PP_FONTFAMILY_SANSSERIF);
2624 description.set_size(kMessageTextSize * device_scale_);
2625 pp::Font_Dev font(this, description);
2626 int length = font.MeasureSimpleText(str);
2627 pp::Point point(top_center);
2628 point.set_x(point.x() - length / 2);
2629 DCHECK(!image_data_.is_null());
2630 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2631 }
2632
2633 void Instance::SetPrintPreviewMode(int page_count) {
2634 if (!IsPrintPreview() || page_count <= 0) {
2635 print_preview_page_count_ = 0;
2636 return;
2637 }
2638
2639 print_preview_page_count_ = page_count;
2640 ScrollToPage(0);
2641 engine_->AppendBlankPages(print_preview_page_count_);
2642 if (preview_pages_info_.size() > 0)
2643 LoadAvailablePreviewPage();
2644 }
2645
2646 bool Instance::IsPrintPreview() {
2647 return IsPrintPreviewUrl(url_);
2648 }
2649
2650 uint32 Instance::GetBackgroundColor() {
2651 return kBackgroundColor;
2652 }
2653
2654 int Instance::GetPageNumberToDisplay() {
2655 int page = engine_->GetMostVisiblePage();
2656 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2657 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2658 return print_preview_page_numbers_[page];
2659 }
2660 return page + 1;
2661 }
2662
2663 void Instance::ProcessPreviewPageInfo(const std::string& url,
2664 int dst_page_index) {
2665 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2666 return;
2667
2668 int src_page_index = ExtractPrintPreviewPageIndex(url);
2669 if (src_page_index < 1)
2670 return;
2671
2672 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2673 LoadAvailablePreviewPage();
2674 }
2675
2676 void Instance::LoadAvailablePreviewPage() {
2677 if (preview_pages_info_.size() <= 0)
2678 return;
2679
2680 std::string url = preview_pages_info_.front().first;
2681 int dst_page_index = preview_pages_info_.front().second;
2682 int src_page_index = ExtractPrintPreviewPageIndex(url);
2683 if (src_page_index < 1 ||
2684 dst_page_index >= print_preview_page_count_ ||
2685 preview_document_load_state_ == LOAD_STATE_LOADING) {
2686 return;
2687 }
2688
2689 preview_document_load_state_ = LOAD_STATE_LOADING;
2690 LoadPreviewUrl(url);
2691 }
2692
2693 void Instance::EnableAutoscroll(const pp::Point& origin) {
2694 if (is_autoscroll_)
2695 return;
2696
2697 pp::Size client_size = plugin_size_;
2698 if (v_scrollbar_.get())
2699 client_size.Enlarge(-GetScrollbarThickness(), 0);
2700 if (h_scrollbar_.get())
2701 client_size.Enlarge(0, -GetScrollbarThickness());
2702
2703 // Do not allow autoscroll if client area is too small.
2704 if (autoscroll_anchor_.size().width() > client_size.width() ||
2705 autoscroll_anchor_.size().height() > client_size.height())
2706 return;
2707
2708 autoscroll_rect_ = pp::Rect(
2709 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2710 origin.y() - autoscroll_anchor_.size().height() / 2),
2711 autoscroll_anchor_.size());
2712
2713 // Make sure autoscroll anchor is in the client area.
2714 if (autoscroll_rect_.right() > client_size.width()) {
2715 autoscroll_rect_.set_x(
2716 client_size.width() - autoscroll_anchor_.size().width());
2717 }
2718 if (autoscroll_rect_.bottom() > client_size.height()) {
2719 autoscroll_rect_.set_y(
2720 client_size.height() - autoscroll_anchor_.size().height());
2721 }
2722
2723 if (autoscroll_rect_.x() < 0)
2724 autoscroll_rect_.set_x(0);
2725 if (autoscroll_rect_.y() < 0)
2726 autoscroll_rect_.set_y(0);
2727
2728 is_autoscroll_ = true;
2729 Invalidate(kAutoScrollId, autoscroll_rect_);
2730
2731 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2732 }
2733
2734 void Instance::DisableAutoscroll() {
2735 if (is_autoscroll_) {
2736 is_autoscroll_ = false;
2737 Invalidate(kAutoScrollId, autoscroll_rect_);
2738 }
2739 }
2740
2741 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2742 // Scroll only if mouse pointer is outside of the anchor area.
2743 if (autoscroll_rect_.Contains(mouse_pos)) {
2744 autoscroll_x_ = 0;
2745 autoscroll_y_ = 0;
2746 return PP_CURSORTYPE_MIDDLEPANNING;
2747 }
2748
2749 // Relative position to the center of anchor area.
2750 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2751
2752 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2753 double angle = atan2(static_cast<double>(rel_pos.y()),
2754 static_cast<double>(rel_pos.x()));
2755
2756 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2757 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2758
2759 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2760 // so negative angle represent north direction.
2761 if (angle < - (M_PI * 7.0 / 8.0)) {
2762 // going west
2763 return PP_CURSORTYPE_WESTPANNING;
2764 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2765 // going north-west
2766 return PP_CURSORTYPE_NORTHWESTPANNING;
2767 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2768 // going north.
2769 return PP_CURSORTYPE_NORTHPANNING;
2770 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2771 // going north-east
2772 return PP_CURSORTYPE_NORTHEASTPANNING;
2773 } else if (angle < M_PI * 1.0 / 8.0) {
2774 // going east.
2775 return PP_CURSORTYPE_EASTPANNING;
2776 } else if (angle < M_PI * 3.0 / 8.0) {
2777 // going south-east
2778 return PP_CURSORTYPE_SOUTHEASTPANNING;
2779 } else if (angle < M_PI * 5.0 / 8.0) {
2780 // going south.
2781 return PP_CURSORTYPE_SOUTHPANNING;
2782 } else if (angle < M_PI * 7.0 / 8.0) {
2783 // going south-west
2784 return PP_CURSORTYPE_SOUTHWESTPANNING;
2785 }
2786
2787 // went around the circle, going west again
2788 return PP_CURSORTYPE_WESTPANNING;
2789 }
2790
2791 void Instance::ConfigureNumberImageGenerator() {
2792 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2793 pp::ImageData number_background = CreateResourceImage(
2794 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2795 number_image_generator_->Configure(number_background,
2796 num_images,
2797 device_scale_);
2798 }
2799
2800 NumberImageGenerator* Instance::number_image_generator() {
2801 if (!number_image_generator_.get()) {
2802 number_image_generator_.reset(new NumberImageGenerator(this));
2803 ConfigureNumberImageGenerator();
2804 }
2805 return number_image_generator_.get();
2806 }
2807
2808 int Instance::GetScaled(int x) const {
2809 return static_cast<int>(x * device_scale_);
2810 }
2811
2812 void Instance::UserMetricsRecordAction(const std::string& action) {
2813 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2814 }
2815
2816 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2817 : instance_(instance) {
2818 }
2819
2820 PDFScriptableObject::~PDFScriptableObject() {
2821 }
2822
2823 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2824 return instance_->HasScriptableMethod(name, exception);
2825 }
2826
2827 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2828 const std::vector<pp::Var>& args,
2829 pp::Var* exception) {
2830 return instance_->CallScriptableMethod(method, args, exception);
2831 }
2832
2833 } // namespace chrome_pdf