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Fix more MSVC warnings, courgette/ edition.
[chromium-blink-merge.git] / pdf / instance.cc
blob8ec4a9e7e365c4243da41af98ee536c936c7ec83
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "pdf/instance.h"
6
7 #include <algorithm> // for min()
8 #define _USE_MATH_DEFINES // for M_PI
9 #include <cmath> // for log() and pow()
10 #include <math.h>
11 #include <list>
12
13 #include "base/json/json_reader.h"
14 #include "base/json/json_writer.h"
15 #include "base/logging.h"
16 #include "base/strings/string_number_conversions.h"
17 #include "base/strings/string_split.h"
18 #include "base/strings/string_util.h"
19 #include "base/values.h"
20 #include "chrome/browser/chrome_page_zoom_constants.h"
21 #include "chrome/common/content_restriction.h"
22 #include "content/public/common/page_zoom.h"
23 #include "net/base/escape.h"
24 #include "pdf/draw_utils.h"
25 #include "pdf/number_image_generator.h"
26 #include "pdf/pdf.h"
27 #include "pdf/resource_consts.h"
28 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
29 #include "ppapi/c/pp_errors.h"
30 #include "ppapi/c/pp_rect.h"
31 #include "ppapi/c/private/ppp_pdf.h"
32 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
33 #include "ppapi/cpp/core.h"
34 #include "ppapi/cpp/dev/font_dev.h"
35 #include "ppapi/cpp/dev/memory_dev.h"
36 #include "ppapi/cpp/dev/text_input_dev.h"
37 #include "ppapi/cpp/module.h"
38 #include "ppapi/cpp/point.h"
39 #include "ppapi/cpp/private/pdf.h"
40 #include "ppapi/cpp/rect.h"
41 #include "ppapi/cpp/resource.h"
42 #include "ppapi/cpp/url_request_info.h"
43 #include "ui/events/keycodes/keyboard_codes.h"
44
45 #if defined(OS_MACOSX)
46 #include "base/mac/mac_util.h"
47 #endif
48
49 namespace chrome_pdf {
50
51 struct ToolbarButtonInfo {
52 uint32 id;
53 Button::ButtonStyle style;
54 PP_ResourceImage normal;
55 PP_ResourceImage highlighted;
56 PP_ResourceImage pressed;
57 };
58
59 namespace {
60
61 // Uncomment following #define to enable thumbnails.
62 // #define ENABLE_THUMBNAILS
63
64 const uint32 kToolbarSplashTimeoutMs = 6000;
65 const uint32 kMessageTextColor = 0xFF575757;
66 const uint32 kMessageTextSize = 22;
67 const uint32 kProgressFadeTimeoutMs = 250;
68 const uint32 kProgressDelayTimeoutMs = 1000;
69 const uint32 kAutoScrollTimeoutMs = 50;
70 const double kAutoScrollFactor = 0.2;
71
72 // Javascript methods.
73 const char kJSAccessibility[] = "accessibility";
74 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
75 const char kJSGetHeight[] = "getHeight";
76 const char kJSGetHorizontalScrollbarThickness[] =
77 "getHorizontalScrollbarThickness";
78 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
79 const char kJSGetSelectedText[] = "getSelectedText";
80 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
81 const char kJSGetWidth[] = "getWidth";
82 const char kJSGetZoomLevel[] = "getZoomLevel";
83 const char kJSGoToPage[] = "goToPage";
84 const char kJSGrayscale[] = "grayscale";
85 const char kJSLoadPreviewPage[] = "loadPreviewPage";
86 const char kJSOnLoad[] = "onload";
87 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
88 const char kJSOnScroll[] = "onScroll";
89 const char kJSPageXOffset[] = "pageXOffset";
90 const char kJSPageYOffset[] = "pageYOffset";
91 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
92 const char kJSReload[] = "reload";
93 const char kJSRemovePrintButton[] = "removePrintButton";
94 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
95 const char kJSSendKeyEvent[] = "sendKeyEvent";
96 const char kJSSetPageNumbers[] = "setPageNumbers";
97 const char kJSSetPageXOffset[] = "setPageXOffset";
98 const char kJSSetPageYOffset[] = "setPageYOffset";
99 const char kJSSetZoomLevel[] = "setZoomLevel";
100 const char kJSZoomFitToHeight[] = "fitToHeight";
101 const char kJSZoomFitToWidth[] = "fitToWidth";
102 const char kJSZoomIn[] = "zoomIn";
103 const char kJSZoomOut[] = "zoomOut";
104
105 // URL reference parameters.
106 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
107 // document from Adobe.
108 const char kDelimiters[] = "#&";
109 const char kNamedDest[] = "nameddest";
110 const char kPage[] = "page";
111
112 const char kChromePrint[] = "chrome://print/";
113
114 // Dictionary Value key names for the document accessibility info
115 const char kAccessibleNumberOfPages[] = "numberOfPages";
116 const char kAccessibleLoaded[] = "loaded";
117 const char kAccessibleCopyable[] = "copyable";
118
119 const ToolbarButtonInfo kPDFToolbarButtons[] = {
120 { kFitToPageButtonId, Button::BUTTON_STATE,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
124 { kFitToWidthButtonId, Button::BUTTON_STATE,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
128 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
132 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
136 { kSaveButtonId, Button::BUTTON_CLICKABLE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
140 { kPrintButtonId, Button::BUTTON_CLICKABLE,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
144 };
145
146 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
147 { kFitToPageButtonId, Button::BUTTON_STATE,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
151 { kFitToWidthButtonId, Button::BUTTON_STATE,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
155 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
159 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
163 { kSaveButtonId, Button::BUTTON_CLICKABLE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
167 { kPrintButtonId, Button::BUTTON_CLICKABLE,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
171 };
172
173 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
174 { kFitToPageButtonId, Button::BUTTON_STATE,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
178 { kFitToWidthButtonId, Button::BUTTON_STATE,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
182 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
186 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
190 };
191
192 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
193
194 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
195 pp::Var var;
196 void* object =
197 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
198 if (object)
199 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
200 return var.Detach();
201 }
202
203 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
204 void* object =
205 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
206 if (object) {
207 Instance* obj_instance = static_cast<Instance*>(object);
208 switch (type) {
209 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
210 obj_instance->RotateClockwise();
211 break;
212 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
213 obj_instance->RotateCounterclockwise();
214 break;
215 }
216 }
217 }
218
219 const PPP_Pdf ppp_private = {
220 &GetLinkAtPosition,
221 &Transform
222 };
223
224 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
225 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
226 std::vector<std::string> url_substr;
227 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
228 if (url_substr.size() != 3)
229 return -1;
230
231 if (url_substr[2] != "print.pdf")
232 return -1;
233
234 int page_index = 0;
235 if (!base::StringToInt(url_substr[1], &page_index))
236 return -1;
237 return page_index;
238 }
239
240 bool IsPrintPreviewUrl(const std::string& url) {
241 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
242 }
243
244 void ScalePoint(float scale, pp::Point* point) {
245 point->set_x(static_cast<int>(point->x() * scale));
246 point->set_y(static_cast<int>(point->y() * scale));
247 }
248
249 void ScaleRect(float scale, pp::Rect* rect) {
250 int left = static_cast<int>(floorf(rect->x() * scale));
251 int top = static_cast<int>(floorf(rect->y() * scale));
252 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
253 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
254 rect->SetRect(left, top, right - left, bottom - top);
255 }
256
257 template<class T>
258 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
259 DCHECK(lower_boundary <= upper_boundary);
260 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
261 }
262
263 } // namespace
264
265 Instance::Instance(PP_Instance instance)
266 : pp::InstancePrivate(instance),
267 pp::Find_Private(this),
268 pp::Printing_Dev(this),
269 pp::Selection_Dev(this),
270 pp::WidgetClient_Dev(this),
271 pp::Zoom_Dev(this),
272 cursor_(PP_CURSORTYPE_POINTER),
273 timer_pending_(false),
274 current_timer_id_(0),
275 zoom_(1.0),
276 device_scale_(1.0),
277 printing_enabled_(true),
278 hidpi_enabled_(false),
279 full_(IsFullFrame()),
280 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
281 did_call_start_loading_(false),
282 is_autoscroll_(false),
283 scrollbar_thickness_(-1),
284 scrollbar_reserved_thickness_(-1),
285 current_tb_info_(NULL),
286 current_tb_info_size_(0),
287 paint_manager_(this, this, true),
288 delayed_progress_timer_id_(0),
289 first_paint_(true),
290 painted_first_page_(false),
291 show_page_indicator_(false),
292 document_load_state_(LOAD_STATE_LOADING),
293 preview_document_load_state_(LOAD_STATE_COMPLETE),
294 told_browser_about_unsupported_feature_(false),
295 print_preview_page_count_(0) {
296 loader_factory_.Initialize(this);
297 timer_factory_.Initialize(this);
298 form_factory_.Initialize(this);
299 callback_factory_.Initialize(this);
300 engine_.reset(PDFEngine::Create(this));
301 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
302 AddPerInstanceObject(kPPPPdfInterface, this);
303
304 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
305 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
306 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
307 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
308 }
309
310 Instance::~Instance() {
311 if (timer_pending_) {
312 timer_factory_.CancelAll();
313 timer_pending_ = false;
314 }
315 // The engine may try to access this instance during its destruction.
316 // Make sure this happens early while the instance is still intact.
317 engine_.reset();
318 RemovePerInstanceObject(kPPPPdfInterface, this);
319 }
320
321 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
322 // For now, we hide HiDPI support behind a flag.
323 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
324 hidpi_enabled_ = true;
325
326 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
327 if (printing_enabled_) {
328 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
329 } else {
330 CreateToolbar(kPDFNoPrintToolbarButtons,
331 arraysize(kPDFNoPrintToolbarButtons));
332 }
333
334 CreateProgressBar();
335
336 // Load autoscroll anchor image.
337 autoscroll_anchor_ =
338 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
339
340 #ifdef ENABLE_THUMBNAILS
341 CreateThumbnails();
342 #endif
343 const char* url = NULL;
344 for (uint32_t i = 0; i < argc; ++i) {
345 if (strcmp(argn[i], "src") == 0) {
346 url = argv[i];
347 break;
348 }
349 }
350
351 if (!url)
352 return false;
353
354 CreatePageIndicator(IsPrintPreviewUrl(url));
355
356 if (!full_) {
357 // For PDFs embedded in a frame, we don't get the data automatically like we
358 // do for full-frame loads. Start loading the data manually.
359 LoadUrl(url);
360 } else {
361 DCHECK(!did_call_start_loading_);
362 pp::PDF::DidStartLoading(this);
363 did_call_start_loading_ = true;
364 }
365
366 ZoomLimitsChanged(kMinZoom, kMaxZoom);
367
368 text_input_.reset(new pp::TextInput_Dev(this));
369
370 url_ = url;
371 return engine_->New(url);
372 }
373
374 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
375 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
376 kProgressDelayTimeoutMs);
377 return engine_->HandleDocumentLoad(loader);
378 }
379
380 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
381 // To simplify things, convert the event into device coordinates if it is
382 // a mouse event.
383 pp::InputEvent event_device_res(event);
384 {
385 pp::MouseInputEvent mouse_event(event);
386 if (!mouse_event.is_null()) {
387 pp::Point point = mouse_event.GetPosition();
388 pp::Point movement = mouse_event.GetMovement();
389 ScalePoint(device_scale_, &point);
390 ScalePoint(device_scale_, &movement);
391 mouse_event = pp::MouseInputEvent(
392 this,
393 event.GetType(),
394 event.GetTimeStamp(),
395 event.GetModifiers(),
396 mouse_event.GetButton(),
397 point,
398 mouse_event.GetClickCount(),
399 movement);
400 event_device_res = mouse_event;
401 }
402 }
403
404 // Check if we need to go to autoscroll mode.
405 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
406 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
407 pp::MouseInputEvent mouse_event(event_device_res);
408 pp::Point pos = mouse_event.GetPosition();
409 EnableAutoscroll(pos);
410 UpdateCursor(CalculateAutoscroll(pos));
411 return true;
412 } else {
413 // Quit autoscrolling on any other event.
414 DisableAutoscroll();
415 }
416
417 #ifdef ENABLE_THUMBNAILS
418 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
419 thumbnails_.SlideOut();
420
421 if (thumbnails_.HandleEvent(event_device_res))
422 return true;
423 #endif
424
425 if (toolbar_->HandleEvent(event_device_res))
426 return true;
427
428 #ifdef ENABLE_THUMBNAILS
429 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
430 pp::MouseInputEvent mouse_event(event);
431 pp::Point pt = mouse_event.GetPosition();
432 pp::Rect v_scrollbar_rc;
433 v_scrollbar_->GetLocation(&v_scrollbar_rc);
434 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
435 // in the webkit that makes event.u.mouse.button
436 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
437 // To work around this issue we use modifier for now, and will switch
438 // to button once the bug is fixed and webkit got merged back to our tree.
439 if (v_scrollbar_rc.Contains(pt) &&
440 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
441 thumbnails_.SlideIn();
442 }
443
444 // When scrollbar is in the scrolling mode we should display thumbnails
445 // even the mouse is outside the thumbnail and scrollbar areas.
446 // If mouse is outside plugin area, we are still getting mouse move events
447 // while scrolling. See bug description for details:
448 // http://code.google.com/p/chromium/issues/detail?id=56444
449 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
450 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
451 !thumbnails_.rect().Contains(pt)) {
452 thumbnails_.SlideOut();
453 }
454 }
455 #endif
456
457 // Need to pass the event to the engine first, since if we're over an edit
458 // control we want it to get keyboard events (like space) instead of the
459 // scrollbar.
460 // TODO: will have to offset the mouse coordinates once we support bidi and
461 // there could be scrollbars on the left.
462 pp::InputEvent offset_event(event_device_res);
463 bool try_engine_first = true;
464 switch (offset_event.GetType()) {
465 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
466 case PP_INPUTEVENT_TYPE_MOUSEUP:
467 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
468 case PP_INPUTEVENT_TYPE_MOUSEENTER:
469 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
470 pp::MouseInputEvent mouse_event(event_device_res);
471 pp::MouseInputEvent mouse_event_dip(event);
472 pp::Point point = mouse_event.GetPosition();
473 point.set_x(point.x() - available_area_.x());
474 offset_event = pp::MouseInputEvent(
475 this,
476 event.GetType(),
477 event.GetTimeStamp(),
478 event.GetModifiers(),
479 mouse_event.GetButton(),
480 point,
481 mouse_event.GetClickCount(),
482 mouse_event.GetMovement());
483 if (!engine_->IsSelecting()) {
484 if (!IsOverlayScrollbar() &&
485 !available_area_.Contains(mouse_event.GetPosition())) {
486 try_engine_first = false;
487 } else if (IsOverlayScrollbar()) {
488 pp::Rect temp;
489 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
490 temp.Contains(mouse_event_dip.GetPosition())) ||
491 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
492 temp.Contains(mouse_event_dip.GetPosition()))) {
493 try_engine_first = false;
494 }
495 }
496 }
497 break;
498 }
499 default:
500 break;
501 }
502 if (try_engine_first && engine_->HandleEvent(offset_event))
503 return true;
504
505 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
506 // there is no horizontal scroll bar.
507 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
508 // Prev/Next page. Spacebar / shift+spacebar should do the same.
509 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
510 pp::KeyboardInputEvent keyboard_event(event);
511 bool no_h_scrollbar = !h_scrollbar_.get();
512 uint32_t key_code = keyboard_event.GetKeyCode();
513 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
514 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
515 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
516 bool has_shift =
517 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
518 bool key_is_space = key_code == ui::VKEY_SPACE;
519 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
520 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
521 }
522 if (page_down) {
523 int page = engine_->GetFirstVisiblePage();
524 if (page == -1)
525 return true;
526 // Engine calculates visible page including delimiter to the page size.
527 // We need to check here if the page itself is completely out of view and
528 // scroll to the next one in that case.
529 if (engine_->GetPageRect(page).bottom() * zoom_ <=
530 v_scrollbar_->GetValue())
531 page++;
532 ScrollToPage(page + 1);
533 UpdateCursor(PP_CURSORTYPE_POINTER);
534 return true;
535 } else if (page_up) {
536 int page = engine_->GetFirstVisiblePage();
537 if (page == -1)
538 return true;
539 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
540 page--;
541 ScrollToPage(page);
542 UpdateCursor(PP_CURSORTYPE_POINTER);
543 return true;
544 }
545 }
546
547 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
548 UpdateCursor(PP_CURSORTYPE_POINTER);
549 return true;
550 }
551
552 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
553 UpdateCursor(PP_CURSORTYPE_POINTER);
554 return true;
555 }
556
557 if (timer_pending_ &&
558 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
559 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
560 timer_factory_.CancelAll();
561 timer_pending_ = false;
562 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
563 engine_->IsSelecting()) {
564 bool set_timer = false;
565 pp::MouseInputEvent mouse_event(event);
566 if (v_scrollbar_.get() &&
567 (mouse_event.GetPosition().y() <= 0 ||
568 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
569 v_scrollbar_->ScrollBy(
570 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
571 set_timer = true;
572 }
573 if (h_scrollbar_.get() &&
574 (mouse_event.GetPosition().x() <= 0 ||
575 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
576 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
577 mouse_event.GetPosition().x() >= 0 ? 1: -1);
578 set_timer = true;
579 }
580
581 if (set_timer) {
582 last_mouse_event_ = pp::MouseInputEvent(event);
583
584 pp::CompletionCallback callback =
585 timer_factory_.NewCallback(&Instance::OnTimerFired);
586 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
587 timer_pending_ = true;
588 }
589 }
590
591 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
592 pp::KeyboardInputEvent keyboard_event(event);
593 const uint32 modifier = event.GetModifiers();
594 if (modifier & kDefaultKeyModifier) {
595 switch (keyboard_event.GetKeyCode()) {
596 case 'A':
597 engine_->SelectAll();
598 return true;
599 }
600 } else if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
601 switch (keyboard_event.GetKeyCode()) {
602 case ui::VKEY_OEM_4:
603 // Left bracket.
604 engine_->RotateCounterclockwise();
605 return true;
606 case ui::VKEY_OEM_6:
607 // Right bracket.
608 engine_->RotateClockwise();
609 return true;
610 }
611 }
612 }
613
614 // Return true for unhandled clicks so the plugin takes focus.
615 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
616 }
617
618 void Instance::DidChangeView(const pp::View& view) {
619 pp::Rect view_rect(view.GetRect());
620 float device_scale = 1.0f;
621 float old_device_scale = device_scale_;
622 if (hidpi_enabled_)
623 device_scale = view.GetDeviceScale();
624 pp::Size view_device_size(view_rect.width() * device_scale,
625 view_rect.height() * device_scale);
626 if (view_device_size == plugin_size_ && device_scale == device_scale_)
627 return; // We don't care about the position, only the size.
628
629 image_data_ = pp::ImageData();
630 device_scale_ = device_scale;
631 plugin_dip_size_ = view_rect.size();
632 plugin_size_ = view_device_size;
633
634 paint_manager_.SetSize(view_device_size, device_scale_);
635
636 image_data_ = pp::ImageData(this,
637 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
638 plugin_size_,
639 false);
640 if (image_data_.is_null()) {
641 DCHECK(plugin_size_.IsEmpty());
642 return;
643 }
644
645 // View dimensions changed, disable autoscroll (if it was enabled).
646 DisableAutoscroll();
647
648 OnGeometryChanged(zoom_, old_device_scale);
649 }
650
651 pp::Var Instance::GetInstanceObject() {
652 if (instance_object_.is_undefined()) {
653 PDFScriptableObject* object = new PDFScriptableObject(this);
654 // The pp::Var takes ownership of object here.
655 instance_object_ = pp::VarPrivate(this, object);
656 }
657
658 return instance_object_;
659 }
660
661 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
662 pp::Point offset_point(point);
663 ScalePoint(device_scale_, &offset_point);
664 offset_point.set_x(offset_point.x() - available_area_.x());
665 return engine_->GetLinkAtPosition(offset_point);
666 }
667
668 pp::Var Instance::GetSelectedText(bool html) {
669 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
670 return pp::Var();
671 return engine_->GetSelectedText();
672 }
673
674 void Instance::InvalidateWidget(pp::Widget_Dev widget,
675 const pp::Rect& dirty_rect) {
676 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
677 if (!image_data_.is_null())
678 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
679 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
680 if (!image_data_.is_null())
681 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
682 } else {
683 // Possible to hit this condition since sometimes the scrollbar codes posts
684 // a task to do something later, and we could have deleted our reference in
685 // the meantime.
686 return;
687 }
688
689 pp::Rect dirty_rect_scaled = dirty_rect;
690 ScaleRect(device_scale_, &dirty_rect_scaled);
691 paint_manager_.InvalidateRect(dirty_rect_scaled);
692 }
693
694 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
695 uint32_t value) {
696 value = GetScaled(value);
697 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
698 engine_->ScrolledToYPosition(value);
699 pp::Rect rc;
700 v_scrollbar_->GetLocation(&rc);
701 int32 doc_height = GetDocumentPixelHeight();
702 doc_height -= GetScaled(rc.height());
703 #ifdef ENABLE_THUMBNAILS
704 if (thumbnails_.visible()) {
705 thumbnails_.SetPosition(value, doc_height, true);
706 }
707 #endif
708 pp::Point origin(
709 plugin_size_.width() - page_indicator_.rect().width() -
710 GetScaled(GetScrollbarReservedThickness()),
711 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
712 page_indicator_.MoveTo(origin, page_indicator_.visible());
713 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
714 engine_->ScrolledToXPosition(value);
715 }
716 }
717
718 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
719 bool overlay) {
720 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
721 OnGeometryChanged(zoom_, device_scale_);
722 }
723
724 uint32_t Instance::QuerySupportedPrintOutputFormats() {
725 return engine_->QuerySupportedPrintOutputFormats();
726 }
727
728 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
729 // For us num_pages is always equal to the number of pages in the PDF
730 // document irrespective of the printable area.
731 int32_t ret = engine_->GetNumberOfPages();
732 if (!ret)
733 return 0;
734
735 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
736 if ((print_settings.format & supported_formats) == 0)
737 return 0;
738
739 print_settings_.is_printing = true;
740 print_settings_.pepper_print_settings = print_settings;
741 engine_->PrintBegin();
742 return ret;
743 }
744
745 pp::Resource Instance::PrintPages(
746 const PP_PrintPageNumberRange_Dev* page_ranges,
747 uint32_t page_range_count) {
748 if (!print_settings_.is_printing)
749 return pp::Resource();
750
751 print_settings_.print_pages_called_ = true;
752 return engine_->PrintPages(page_ranges, page_range_count,
753 print_settings_.pepper_print_settings);
754 }
755
756 void Instance::PrintEnd() {
757 if (print_settings_.print_pages_called_)
758 UserMetricsRecordAction("PDF.PrintPage");
759 print_settings_.Clear();
760 engine_->PrintEnd();
761 }
762
763 bool Instance::IsPrintScalingDisabled() {
764 return !engine_->GetPrintScaling();
765 }
766
767 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
768 engine_->StartFind(text.c_str(), case_sensitive);
769 return true;
770 }
771
772 void Instance::SelectFindResult(bool forward) {
773 engine_->SelectFindResult(forward);
774 }
775
776 void Instance::StopFind() {
777 engine_->StopFind();
778 }
779
780 void Instance::Zoom(double scale, bool text_only) {
781 UserMetricsRecordAction("PDF.ZoomFromBrowser");
782 SetZoom(ZOOM_SCALE, scale);
783 }
784
785 void Instance::ZoomChanged(double factor) {
786 if (full_)
787 Zoom_Dev::ZoomChanged(factor);
788 }
789
790 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
791 std::vector<PaintManager::ReadyRect>* ready,
792 std::vector<pp::Rect>* pending) {
793 if (image_data_.is_null()) {
794 DCHECK(plugin_size_.IsEmpty());
795 return;
796 }
797 if (first_paint_) {
798 first_paint_ = false;
799 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
800 FillRect(rect, kBackgroundColor);
801 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
802 *pending = paint_rects;
803 return;
804 }
805
806 engine_->PrePaint();
807
808 for (size_t i = 0; i < paint_rects.size(); i++) {
809 // Intersect with plugin area since there could be pending invalidates from
810 // when the plugin area was larger.
811 pp::Rect rect =
812 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
813 if (rect.IsEmpty())
814 continue;
815
816 pp::Rect pdf_rect = available_area_.Intersect(rect);
817 if (!pdf_rect.IsEmpty()) {
818 pdf_rect.Offset(available_area_.x() * -1, 0);
819
820 std::vector<pp::Rect> pdf_ready;
821 std::vector<pp::Rect> pdf_pending;
822 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
823 for (size_t j = 0; j < pdf_ready.size(); ++j) {
824 pdf_ready[j].Offset(available_area_.point());
825 ready->push_back(
826 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
827 }
828 for (size_t j = 0; j < pdf_pending.size(); ++j) {
829 pdf_pending[j].Offset(available_area_.point());
830 pending->push_back(pdf_pending[j]);
831 }
832 }
833
834 for (size_t j = 0; j < background_parts_.size(); ++j) {
835 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
836 if (!intersection.IsEmpty()) {
837 FillRect(intersection, background_parts_[j].color);
838 ready->push_back(
839 PaintManager::ReadyRect(intersection, image_data_, false));
840 }
841 }
842
843 if (document_load_state_ == LOAD_STATE_FAILED) {
844 pp::Point top_center;
845 top_center.set_x(plugin_size_.width() / 2);
846 top_center.set_y(plugin_size_.height() / 2);
847 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
848 }
849
850 #ifdef ENABLE_THUMBNAILS
851 thumbnails_.Paint(&image_data_, rect);
852 #endif
853 }
854
855 engine_->PostPaint();
856
857 // Must paint scrollbars after the background parts, in case we have an
858 // overlay scrollbar that's over the background. We also do this in a separate
859 // loop because the scrollbar painting logic uses the signal of whether there
860 // are pending paints or not to figure out if it should draw right away or
861 // not.
862 for (size_t i = 0; i < paint_rects.size(); i++) {
863 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
864 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
865 }
866
867 if (progress_bar_.visible())
868 PaintOverlayControl(&progress_bar_, &image_data_, ready);
869
870 if (page_indicator_.visible())
871 PaintOverlayControl(&page_indicator_, &image_data_, ready);
872
873 if (toolbar_->current_transparency() != kTransparentAlpha)
874 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
875
876 // Paint autoscroll anchor if needed.
877 if (is_autoscroll_) {
878 size_t limit = ready->size();
879 for (size_t i = 0; i < limit; i++) {
880 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
881 if (!anchor_rect.IsEmpty()) {
882 pp::Rect draw_rc = pp::Rect(
883 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
884 anchor_rect.y() - autoscroll_rect_.y()),
885 anchor_rect.size());
886 // Paint autoscroll anchor.
887 AlphaBlend(autoscroll_anchor_, draw_rc,
888 &image_data_, anchor_rect.point(), kOpaqueAlpha);
889 }
890 }
891 }
892 }
893
894 void Instance::PaintOverlayControl(
895 Control* ctrl,
896 pp::ImageData* image_data,
897 std::vector<PaintManager::ReadyRect>* ready) {
898 // Make sure that we only paint overlay controls over an area that's ready,
899 // i.e. not pending. Otherwise we'll mark the control rect as ready and
900 // it'll overwrite the pdf region.
901 std::list<pp::Rect> ctrl_rects;
902 for (size_t i = 0; i < ready->size(); i++) {
903 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
904 if (!rc.IsEmpty())
905 ctrl_rects.push_back(rc);
906 }
907
908 if (!ctrl_rects.empty()) {
909 ctrl->PaintMultipleRects(image_data, ctrl_rects);
910
911 std::list<pp::Rect>::iterator iter;
912 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
913 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
914 }
915 }
916 }
917
918 void Instance::DidOpen(int32_t result) {
919 if (result == PP_OK) {
920 engine_->HandleDocumentLoad(embed_loader_);
921 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
922 NOTREACHED();
923 }
924 }
925
926 void Instance::DidOpenPreview(int32_t result) {
927 if (result == PP_OK) {
928 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
929 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
930 } else {
931 NOTREACHED();
932 }
933 }
934
935 void Instance::PaintIfWidgetIntersects(
936 pp::Widget_Dev* widget,
937 const pp::Rect& rect,
938 std::vector<PaintManager::ReadyRect>* ready,
939 std::vector<pp::Rect>* pending) {
940 if (!widget)
941 return;
942
943 pp::Rect location;
944 if (!widget->GetLocation(&location))
945 return;
946
947 ScaleRect(device_scale_, &location);
948 location = location.Intersect(rect);
949 if (location.IsEmpty())
950 return;
951
952 if (IsOverlayScrollbar()) {
953 // If we're using overlay scrollbars, and there are pending paints under the
954 // scrollbar, don't update the scrollbar instantly. While it would be nice,
955 // we would need to double buffer the plugin area in order to make this
956 // work. This is because we'd need to always have a copy of what the pdf
957 // under the scrollbar looks like, and additionally we couldn't paint the
958 // pdf under the scrollbar if it's ready until we got the preceding flush.
959 // So in practice, it would make painting slower and introduce extra buffer
960 // copies for the general case.
961 for (size_t i = 0; i < pending->size(); ++i) {
962 if ((*pending)[i].Intersects(location))
963 return;
964 }
965
966 // Even if none of the pending paints are under the scrollbar, we never want
967 // to paint it if it's over the pdf if there are other pending paints.
968 // Otherwise different parts of the pdf plugin would display at different
969 // scroll offsets.
970 if (!pending->empty() && available_area_.Intersects(rect)) {
971 pending->push_back(location);
972 return;
973 }
974 }
975
976 pp::Rect location_dip = location;
977 ScaleRect(1.0f / device_scale_, &location_dip);
978
979 DCHECK(!image_data_.is_null());
980 widget->Paint(location_dip, &image_data_);
981
982 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
983 }
984
985 void Instance::OnTimerFired(int32_t) {
986 HandleInputEvent(last_mouse_event_);
987 }
988
989 void Instance::OnClientTimerFired(int32_t id) {
990 engine_->OnCallback(id);
991 }
992
993 void Instance::OnControlTimerFired(int32_t,
994 const uint32& control_id,
995 const uint32& timer_id) {
996 if (control_id == toolbar_->id()) {
997 toolbar_->OnTimerFired(timer_id);
998 } else if (control_id == progress_bar_.id()) {
999 if (timer_id == delayed_progress_timer_id_) {
1000 if (document_load_state_ == LOAD_STATE_LOADING &&
1001 !progress_bar_.visible()) {
1002 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1003 }
1004 delayed_progress_timer_id_ = 0;
1005 } else {
1006 progress_bar_.OnTimerFired(timer_id);
1007 }
1008 } else if (control_id == kAutoScrollId) {
1009 if (is_autoscroll_) {
1010 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1011 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1012 }
1013 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1014 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1015 }
1016
1017 // Reschedule timer.
1018 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1019 }
1020 } else if (control_id == kPageIndicatorId) {
1021 page_indicator_.OnTimerFired(timer_id);
1022 }
1023 #ifdef ENABLE_THUMBNAILS
1024 else if (control_id == thumbnails_.id()) {
1025 thumbnails_.OnTimerFired(timer_id);
1026 }
1027 #endif
1028 }
1029
1030 void Instance::CalculateBackgroundParts() {
1031 background_parts_.clear();
1032 int v_scrollbar_thickness =
1033 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1034 int h_scrollbar_thickness =
1035 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1036 int width_without_scrollbar = std::max(
1037 plugin_size_.width() - v_scrollbar_thickness, 0);
1038 int height_without_scrollbar = std::max(
1039 plugin_size_.height() - h_scrollbar_thickness, 0);
1040 int left_width = available_area_.x();
1041 int right_start = available_area_.right();
1042 int right_width = abs(width_without_scrollbar - available_area_.right());
1043 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1044
1045 // Add the left, right, and bottom rectangles. Note: we assume only
1046 // horizontal centering.
1047 BackgroundPart part = {
1048 pp::Rect(0, 0, left_width, bottom),
1049 kBackgroundColor
1050 };
1051 if (!part.location.IsEmpty())
1052 background_parts_.push_back(part);
1053 part.location = pp::Rect(right_start, 0, right_width, bottom);
1054 if (!part.location.IsEmpty())
1055 background_parts_.push_back(part);
1056 part.location = pp::Rect(
1057 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1058 if (!part.location.IsEmpty())
1059 background_parts_.push_back(part);
1060
1061 if (h_scrollbar_thickness
1062 #if defined(OS_MACOSX)
1063 ||
1064 #else
1065 &&
1066 #endif
1067 v_scrollbar_thickness) {
1068 part.color = 0xFFFFFFFF;
1069 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1070 plugin_size_.height() - h_scrollbar_thickness,
1071 h_scrollbar_thickness,
1072 v_scrollbar_thickness);
1073 background_parts_.push_back(part);
1074 }
1075 }
1076
1077 int Instance::GetDocumentPixelWidth() const {
1078 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1079 }
1080
1081 int Instance::GetDocumentPixelHeight() const {
1082 return static_cast<int>(ceil(document_size_.height() *
1083 zoom_ *
1084 device_scale_));
1085 }
1086
1087 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1088 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1089 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1090 int stride = image_data_.stride();
1091 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1092 int height = rect.height();
1093 int width = rect.width();
1094 for (int y = 0; y < height; ++y) {
1095 for (int x = 0; x < width; ++x)
1096 *(ptr + x) = color;
1097 ptr += stride / 4;
1098 }
1099 }
1100
1101 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1102 document_size_ = size;
1103
1104 OnGeometryChanged(zoom_, device_scale_);
1105 }
1106
1107 void Instance::Invalidate(const pp::Rect& rect) {
1108 pp::Rect offset_rect(rect);
1109 offset_rect.Offset(available_area_.point());
1110 paint_manager_.InvalidateRect(offset_rect);
1111 }
1112
1113 void Instance::Scroll(const pp::Point& point) {
1114 pp::Rect scroll_area = available_area_;
1115 if (IsOverlayScrollbar()) {
1116 pp::Rect rc;
1117 if (h_scrollbar_.get()) {
1118 h_scrollbar_->GetLocation(&rc);
1119 ScaleRect(device_scale_, &rc);
1120 if (scroll_area.bottom() > rc.y()) {
1121 scroll_area.set_height(rc.y() - scroll_area.y());
1122 paint_manager_.InvalidateRect(rc);
1123 }
1124 }
1125 if (v_scrollbar_.get()) {
1126 v_scrollbar_->GetLocation(&rc);
1127 ScaleRect(device_scale_, &rc);
1128 if (scroll_area.right() > rc.x()) {
1129 scroll_area.set_width(rc.x() - scroll_area.x());
1130 paint_manager_.InvalidateRect(rc);
1131 }
1132 }
1133 }
1134 paint_manager_.ScrollRect(scroll_area, point);
1135
1136 if (toolbar_->current_transparency() != kTransparentAlpha)
1137 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1138
1139 if (progress_bar_.visible())
1140 paint_manager_.InvalidateRect(progress_bar_.rect());
1141
1142 if (is_autoscroll_)
1143 paint_manager_.InvalidateRect(autoscroll_rect_);
1144
1145 if (show_page_indicator_) {
1146 page_indicator_.set_current_page(GetPageNumberToDisplay());
1147 page_indicator_.Splash();
1148 }
1149
1150 if (page_indicator_.visible())
1151 paint_manager_.InvalidateRect(page_indicator_.rect());
1152
1153 // Run the scroll callback asynchronously. This function can be invoked by a
1154 // layout change which should not re-enter into JS synchronously.
1155 pp::CompletionCallback callback =
1156 callback_factory_.NewCallback(&Instance::RunCallback,
1157 on_scroll_callback_);
1158 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1159 }
1160
1161 void Instance::ScrollToX(int position) {
1162 if (!h_scrollbar_.get()) {
1163 NOTREACHED();
1164 return;
1165 }
1166 int position_dip = static_cast<int>(position / device_scale_);
1167 h_scrollbar_->SetValue(position_dip);
1168 }
1169
1170 void Instance::ScrollToY(int position) {
1171 if (!v_scrollbar_.get()) {
1172 NOTREACHED();
1173 return;
1174 }
1175 int position_dip = static_cast<int>(position / device_scale_);
1176 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1177 }
1178
1179 void Instance::ScrollToPage(int page) {
1180 if (!v_scrollbar_.get())
1181 return;
1182
1183 if (engine_->GetNumberOfPages() == 0)
1184 return;
1185
1186 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1187 pp::Rect rect = engine_->GetPageRect(index);
1188 // If we are trying to scroll pass the last page,
1189 // scroll to the end of the last page.
1190 int position = index < page ? rect.bottom() : rect.y();
1191 ScrollToY(position * zoom_ * device_scale_);
1192 }
1193
1194 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1195 std::string url_copy(url);
1196
1197 // Empty |url_copy| is ok, and will effectively be a reload.
1198 // Skip the code below so an empty URL does not turn into "http://", which
1199 // will cause GURL to fail a DCHECK.
1200 if (!url_copy.empty()) {
1201 // If |url_copy| starts with '#', then it's for the same URL with a
1202 // different URL fragment.
1203 if (url_copy[0] == '#') {
1204 url_copy = url_ + url_copy;
1205 // Changing the href does not actually do anything when navigating in the
1206 // same tab, so do the actual page scroll here. Then fall through so the
1207 // href gets updated.
1208 if (!open_in_new_tab) {
1209 int page_number = GetInitialPage(url_copy);
1210 if (page_number >= 0)
1211 ScrollToPage(page_number);
1212 }
1213 }
1214 // If there's no scheme, add http.
1215 if (url_copy.find("://") == std::string::npos &&
1216 url_copy.find("mailto:") == std::string::npos) {
1217 url_copy = "http://" + url_copy;
1218 }
1219 // Make sure |url_copy| starts with a valid scheme.
1220 if (url_copy.find("http://") != 0 &&
1221 url_copy.find("https://") != 0 &&
1222 url_copy.find("ftp://") != 0 &&
1223 url_copy.find("file://") != 0 &&
1224 url_copy.find("mailto:") != 0) {
1225 return;
1226 }
1227 // Make sure |url_copy| is not only a scheme.
1228 if (url_copy == "http://" ||
1229 url_copy == "https://" ||
1230 url_copy == "ftp://" ||
1231 url_copy == "file://" ||
1232 url_copy == "mailto:") {
1233 return;
1234 }
1235 }
1236 if (open_in_new_tab) {
1237 GetWindowObject().Call("open", url_copy);
1238 } else {
1239 GetWindowObject().GetProperty("top").GetProperty("location").
1240 SetProperty("href", url_copy);
1241 }
1242 }
1243
1244 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1245 if (cursor == cursor_)
1246 return;
1247 cursor_ = cursor;
1248
1249 const PPB_CursorControl_Dev* cursor_interface =
1250 reinterpret_cast<const PPB_CursorControl_Dev*>(
1251 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1252 if (!cursor_interface) {
1253 NOTREACHED();
1254 return;
1255 }
1256
1257 cursor_interface->SetCursor(
1258 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1259 }
1260
1261 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1262 if (!v_scrollbar_.get())
1263 return;
1264
1265 float inverse_scale = 1.0f / device_scale_;
1266 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1267 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1268 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1269 }
1270
1271 v_scrollbar_->SetTickMarks(
1272 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1273 }
1274
1275 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1276 NumberOfFindResultsChanged(total, final_result);
1277 }
1278
1279 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1280 SelectedFindResultChanged(current_find_index);
1281 }
1282
1283 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1284 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1285 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1286 switch (control_id) {
1287 case kFitToPageButtonId:
1288 UserMetricsRecordAction("PDF.FitToPageButton");
1289 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1290 ZoomChanged(zoom_);
1291 break;
1292 case kFitToWidthButtonId:
1293 UserMetricsRecordAction("PDF.FitToWidthButton");
1294 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1295 ZoomChanged(zoom_);
1296 break;
1297 case kZoomOutButtonId:
1298 case kZoomInButtonId:
1299 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1300 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1301 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1302 ZoomChanged(zoom_);
1303 break;
1304 case kSaveButtonId:
1305 UserMetricsRecordAction("PDF.SaveButton");
1306 SaveAs();
1307 break;
1308 case kPrintButtonId:
1309 UserMetricsRecordAction("PDF.PrintButton");
1310 Print();
1311 break;
1312 }
1313 }
1314 if (control_id == kThumbnailsId &&
1315 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1316 int page = *static_cast<int*>(data);
1317 pp::Rect page_rc(engine_->GetPageRect(page));
1318 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1319 }
1320 }
1321
1322 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1323 paint_manager_.InvalidateRect(rc);
1324 }
1325
1326 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1327 current_timer_id_++;
1328 pp::CompletionCallback callback =
1329 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1330 control_id,
1331 current_timer_id_);
1332 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1333 return current_timer_id_;
1334 }
1335
1336 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1337 // TODO(gene): set event capture here.
1338 }
1339
1340 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1341 UpdateCursor(cursor_type);
1342 }
1343
1344 pp::Instance* Instance::GetInstance() {
1345 return this;
1346 }
1347
1348 void Instance::GetDocumentPassword(
1349 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1350 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1351 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1352 *callback.output() = result.pp_var();
1353 callback.Run(PP_OK);
1354 }
1355
1356 void Instance::Alert(const std::string& message) {
1357 GetWindowObject().Call("alert", message);
1358 }
1359
1360 bool Instance::Confirm(const std::string& message) {
1361 pp::Var result = GetWindowObject().Call("confirm", message);
1362 return result.is_bool() ? result.AsBool() : false;
1363 }
1364
1365 std::string Instance::Prompt(const std::string& question,
1366 const std::string& default_answer) {
1367 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1368 return result.is_string() ? result.AsString() : std::string();
1369 }
1370
1371 std::string Instance::GetURL() {
1372 return url_;
1373 }
1374
1375 void Instance::Email(const std::string& to,
1376 const std::string& cc,
1377 const std::string& bcc,
1378 const std::string& subject,
1379 const std::string& body) {
1380 std::string javascript =
1381 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1382 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1383 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1384 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1385 "&body=" + net::EscapeUrlEncodedData(body, false) +
1386 "';var temp = window.open(href, '_blank', " +
1387 "'width=1,height=1');if(temp) temp.close();";
1388 ExecuteScript(javascript);
1389 }
1390
1391 void Instance::Print() {
1392 if (!printing_enabled_ ||
1393 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1394 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1395 return;
1396 }
1397
1398 pp::CompletionCallback callback =
1399 callback_factory_.NewCallback(&Instance::OnPrint);
1400 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1401 }
1402
1403 void Instance::OnPrint(int32_t) {
1404 pp::PDF::Print(this);
1405 }
1406
1407 void Instance::SaveAs() {
1408 pp::PDF::SaveAs(this);
1409 }
1410
1411 void Instance::SubmitForm(const std::string& url,
1412 const void* data,
1413 int length) {
1414 pp::URLRequestInfo request(this);
1415 request.SetURL(url);
1416 request.SetMethod("POST");
1417 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1418
1419 pp::CompletionCallback callback =
1420 form_factory_.NewCallback(&Instance::FormDidOpen);
1421 form_loader_ = CreateURLLoaderInternal();
1422 int rv = form_loader_.Open(request, callback);
1423 if (rv != PP_OK_COMPLETIONPENDING)
1424 callback.Run(rv);
1425 }
1426
1427 void Instance::FormDidOpen(int32_t result) {
1428 // TODO: inform the user of success/failure.
1429 if (result != PP_OK) {
1430 NOTREACHED();
1431 }
1432 }
1433
1434 std::string Instance::ShowFileSelectionDialog() {
1435 // Seems like very low priority to implement, since the pdf has no way to get
1436 // the file data anyways. Javascript doesn't let you do this synchronously.
1437 NOTREACHED();
1438 return std::string();
1439 }
1440
1441 pp::URLLoader Instance::CreateURLLoader() {
1442 if (full_) {
1443 if (!did_call_start_loading_) {
1444 did_call_start_loading_ = true;
1445 pp::PDF::DidStartLoading(this);
1446 }
1447
1448 // Disable save and print until the document is fully loaded, since they
1449 // would generate an incomplete document. Need to do this each time we
1450 // call DidStartLoading since that resets the content restrictions.
1451 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1452 CONTENT_RESTRICTION_PRINT);
1453 }
1454
1455 return CreateURLLoaderInternal();
1456 }
1457
1458 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1459 pp::CompletionCallback callback =
1460 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1461 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1462 }
1463
1464 void Instance::SearchString(const base::char16* string,
1465 const base::char16* term,
1466 bool case_sensitive,
1467 std::vector<SearchStringResult>* results) {
1468 if (!pp::PDF::IsAvailable()) {
1469 NOTREACHED();
1470 return;
1471 }
1472
1473 PP_PrivateFindResult* pp_results;
1474 int count = 0;
1475 pp::PDF::SearchString(
1476 this,
1477 reinterpret_cast<const unsigned short*>(string),
1478 reinterpret_cast<const unsigned short*>(term),
1479 case_sensitive,
1480 &pp_results,
1481 &count);
1482
1483 results->resize(count);
1484 for (int i = 0; i < count; ++i) {
1485 (*results)[i].start_index = pp_results[i].start_index;
1486 (*results)[i].length = pp_results[i].length;
1487 }
1488
1489 pp::Memory_Dev memory;
1490 memory.MemFree(pp_results);
1491 }
1492
1493 void Instance::DocumentPaintOccurred() {
1494 if (painted_first_page_)
1495 return;
1496
1497 painted_first_page_ = true;
1498 UpdateToolbarPosition(false);
1499 toolbar_->Splash(kToolbarSplashTimeoutMs);
1500
1501 if (engine_->GetNumberOfPages() > 1)
1502 show_page_indicator_ = true;
1503 else
1504 show_page_indicator_ = false;
1505
1506 if (v_scrollbar_.get() && show_page_indicator_) {
1507 page_indicator_.set_current_page(GetPageNumberToDisplay());
1508 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1509 kPageIndicatorInitialFadeTimeoutMs);
1510 }
1511 }
1512
1513 void Instance::DocumentLoadComplete(int page_count) {
1514 // Clear focus state for OSK.
1515 FormTextFieldFocusChange(false);
1516
1517 // Update progress control.
1518 if (progress_bar_.visible())
1519 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1520
1521 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1522 document_load_state_ = LOAD_STATE_COMPLETE;
1523 UserMetricsRecordAction("PDF.LoadSuccess");
1524
1525 if (did_call_start_loading_) {
1526 pp::PDF::DidStopLoading(this);
1527 did_call_start_loading_ = false;
1528 }
1529
1530 if (on_load_callback_.is_string())
1531 ExecuteScript(on_load_callback_);
1532 // Note: If we are in print preview mode on_load_callback_ might call
1533 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1534 // #page=N is not supported in Print Preview.
1535 if (!IsPrintPreview()) {
1536 int initial_page = GetInitialPage(url_);
1537 if (initial_page >= 0)
1538 ScrollToPage(initial_page);
1539 }
1540
1541 if (!full_)
1542 return;
1543 if (!pp::PDF::IsAvailable())
1544 return;
1545
1546 int content_restrictions =
1547 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1548 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1549 content_restrictions |= CONTENT_RESTRICTION_COPY;
1550
1551 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1552 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1553 printing_enabled_ = false;
1554 if (current_tb_info_ == kPDFToolbarButtons) {
1555 // Remove Print button.
1556 CreateToolbar(kPDFNoPrintToolbarButtons,
1557 arraysize(kPDFNoPrintToolbarButtons));
1558 UpdateToolbarPosition(false);
1559 Invalidate(pp::Rect(plugin_size_));
1560 }
1561 }
1562
1563 pp::PDF::SetContentRestriction(this, content_restrictions);
1564
1565 pp::PDF::HistogramPDFPageCount(this, page_count);
1566 }
1567
1568 void Instance::RotateClockwise() {
1569 engine_->RotateClockwise();
1570 }
1571
1572 void Instance::RotateCounterclockwise() {
1573 engine_->RotateCounterclockwise();
1574 }
1575
1576 void Instance::PreviewDocumentLoadComplete() {
1577 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1578 preview_pages_info_.empty()) {
1579 return;
1580 }
1581
1582 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1583
1584 int dest_page_index = preview_pages_info_.front().second;
1585 int src_page_index =
1586 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1587 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1588 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1589
1590 preview_pages_info_.pop();
1591 // |print_preview_page_count_| is not updated yet. Do not load any
1592 // other preview pages till we get this information.
1593 if (print_preview_page_count_ == 0)
1594 return;
1595
1596 if (preview_pages_info_.size())
1597 LoadAvailablePreviewPage();
1598 }
1599
1600 void Instance::DocumentLoadFailed() {
1601 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1602 UserMetricsRecordAction("PDF.LoadFailure");
1603
1604 // Hide progress control.
1605 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1606
1607 if (did_call_start_loading_) {
1608 pp::PDF::DidStopLoading(this);
1609 did_call_start_loading_ = false;
1610 }
1611
1612 document_load_state_ = LOAD_STATE_FAILED;
1613 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1614 }
1615
1616 void Instance::PreviewDocumentLoadFailed() {
1617 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1618 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1619 preview_pages_info_.empty()) {
1620 return;
1621 }
1622
1623 preview_document_load_state_ = LOAD_STATE_FAILED;
1624 preview_pages_info_.pop();
1625
1626 if (preview_pages_info_.size())
1627 LoadAvailablePreviewPage();
1628 }
1629
1630 pp::Instance* Instance::GetPluginInstance() {
1631 return GetInstance();
1632 }
1633
1634 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1635 std::string metric("PDF_Unsupported_");
1636 metric += feature;
1637 if (!unsupported_features_reported_.count(metric)) {
1638 unsupported_features_reported_.insert(metric);
1639 UserMetricsRecordAction(metric);
1640 }
1641
1642 // Since we use an info bar, only do this for full frame plugins..
1643 if (!full_)
1644 return;
1645
1646 if (told_browser_about_unsupported_feature_)
1647 return;
1648 told_browser_about_unsupported_feature_ = true;
1649
1650 pp::PDF::HasUnsupportedFeature(this);
1651 }
1652
1653 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1654 double progress = 0.0;
1655 if (doc_size == 0) {
1656 // Document size is unknown. Use heuristics.
1657 // We'll make progress logarithmic from 0 to 100M.
1658 static const double kFactor = log(100000000.0) / 100.0;
1659 if (available > 0) {
1660 progress = log(static_cast<double>(available)) / kFactor;
1661 if (progress > 100.0)
1662 progress = 100.0;
1663 }
1664 } else {
1665 progress = 100.0 * static_cast<double>(available) / doc_size;
1666 }
1667 progress_bar_.SetProgress(progress);
1668 }
1669
1670 void Instance::FormTextFieldFocusChange(bool in_focus) {
1671 if (!text_input_.get())
1672 return;
1673 if (in_focus)
1674 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1675 else
1676 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1677 }
1678
1679 // Called by PDFScriptableObject.
1680 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1681 std::string method_str = method.AsString();
1682 return (method_str == kJSAccessibility ||
1683 method_str == kJSDocumentLoadComplete ||
1684 method_str == kJSGetHeight ||
1685 method_str == kJSGetHorizontalScrollbarThickness ||
1686 method_str == kJSGetPageLocationNormalized ||
1687 method_str == kJSGetSelectedText ||
1688 method_str == kJSGetVerticalScrollbarThickness ||
1689 method_str == kJSGetWidth ||
1690 method_str == kJSGetZoomLevel ||
1691 method_str == kJSGoToPage ||
1692 method_str == kJSGrayscale ||
1693 method_str == kJSLoadPreviewPage ||
1694 method_str == kJSOnLoad ||
1695 method_str == kJSOnPluginSizeChanged ||
1696 method_str == kJSOnScroll ||
1697 method_str == kJSPageXOffset ||
1698 method_str == kJSPageYOffset ||
1699 method_str == kJSPrintPreviewPageCount ||
1700 method_str == kJSReload ||
1701 method_str == kJSRemovePrintButton ||
1702 method_str == kJSResetPrintPreviewUrl ||
1703 method_str == kJSSendKeyEvent ||
1704 method_str == kJSSetPageNumbers ||
1705 method_str == kJSSetPageXOffset ||
1706 method_str == kJSSetPageYOffset ||
1707 method_str == kJSSetZoomLevel ||
1708 method_str == kJSZoomFitToHeight ||
1709 method_str == kJSZoomFitToWidth ||
1710 method_str == kJSZoomIn ||
1711 method_str == kJSZoomOut);
1712 }
1713
1714 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1715 const std::vector<pp::Var>& args,
1716 pp::Var* exception) {
1717 std::string method_str = method.AsString();
1718 if (method_str == kJSGrayscale) {
1719 if (args.size() == 1 && args[0].is_bool()) {
1720 engine_->SetGrayscale(args[0].AsBool());
1721 // Redraw
1722 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1723 #ifdef ENABLE_THUMBNAILS
1724 if (thumbnails_.visible())
1725 thumbnails_.Show(true, true);
1726 #endif
1727 return pp::Var(true);
1728 }
1729 return pp::Var(false);
1730 }
1731 if (method_str == kJSOnLoad) {
1732 if (args.size() == 1 && args[0].is_string()) {
1733 on_load_callback_ = args[0];
1734 return pp::Var(true);
1735 }
1736 return pp::Var(false);
1737 }
1738 if (method_str == kJSOnScroll) {
1739 if (args.size() == 1 && args[0].is_string()) {
1740 on_scroll_callback_ = args[0];
1741 return pp::Var(true);
1742 }
1743 return pp::Var(false);
1744 }
1745 if (method_str == kJSOnPluginSizeChanged) {
1746 if (args.size() == 1 && args[0].is_string()) {
1747 on_plugin_size_changed_callback_ = args[0];
1748 return pp::Var(true);
1749 }
1750 return pp::Var(false);
1751 }
1752 if (method_str == kJSReload) {
1753 document_load_state_ = LOAD_STATE_LOADING;
1754 if (!full_)
1755 LoadUrl(url_);
1756 preview_engine_.reset();
1757 print_preview_page_count_ = 0;
1758 engine_.reset(PDFEngine::Create(this));
1759 engine_->New(url_.c_str());
1760 #ifdef ENABLE_THUMBNAILS
1761 thumbnails_.ResetEngine(engine_.get());
1762 #endif
1763 return pp::Var();
1764 }
1765 if (method_str == kJSResetPrintPreviewUrl) {
1766 if (args.size() == 1 && args[0].is_string()) {
1767 url_ = args[0].AsString();
1768 preview_pages_info_ = std::queue<PreviewPageInfo>();
1769 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1770 }
1771 return pp::Var();
1772 }
1773 if (method_str == kJSZoomFitToHeight) {
1774 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1775 return pp::Var();
1776 }
1777 if (method_str == kJSZoomFitToWidth) {
1778 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1779 return pp::Var();
1780 }
1781 if (method_str == kJSZoomIn) {
1782 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1783 return pp::Var();
1784 }
1785 if (method_str == kJSZoomOut) {
1786 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1787 return pp::Var();
1788 }
1789 if (method_str == kJSSetZoomLevel) {
1790 if (args.size() == 1 && args[0].is_number())
1791 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1792 return pp::Var();
1793 }
1794 if (method_str == kJSGetZoomLevel) {
1795 return pp::Var(zoom_);
1796 }
1797 if (method_str == kJSGetHeight) {
1798 return pp::Var(plugin_size_.height());
1799 }
1800 if (method_str == kJSGetWidth) {
1801 return pp::Var(plugin_size_.width());
1802 }
1803 if (method_str == kJSGetHorizontalScrollbarThickness) {
1804 return pp::Var(
1805 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1806 }
1807 if (method_str == kJSGetVerticalScrollbarThickness) {
1808 return pp::Var(
1809 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1810 }
1811 if (method_str == kJSGetSelectedText) {
1812 return GetSelectedText(false);
1813 }
1814 if (method_str == kJSDocumentLoadComplete) {
1815 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1816 }
1817 if (method_str == kJSPageYOffset) {
1818 return pp::Var(static_cast<int32_t>(
1819 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1820 }
1821 if (method_str == kJSSetPageYOffset) {
1822 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1823 ScrollToY(GetScaled(args[0].AsInt()));
1824 return pp::Var();
1825 }
1826 if (method_str == kJSPageXOffset) {
1827 return pp::Var(static_cast<int32_t>(
1828 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1829 }
1830 if (method_str == kJSSetPageXOffset) {
1831 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1832 ScrollToX(GetScaled(args[0].AsInt()));
1833 return pp::Var();
1834 }
1835 if (method_str == kJSRemovePrintButton) {
1836 CreateToolbar(kPrintPreviewToolbarButtons,
1837 arraysize(kPrintPreviewToolbarButtons));
1838 UpdateToolbarPosition(false);
1839 Invalidate(pp::Rect(plugin_size_));
1840 return pp::Var();
1841 }
1842 if (method_str == kJSGoToPage) {
1843 if (args.size() == 1 && args[0].is_string()) {
1844 ScrollToPage(atoi(args[0].AsString().c_str()));
1845 }
1846 return pp::Var();
1847 }
1848 if (method_str == kJSAccessibility) {
1849 if (args.size() == 0) {
1850 base::DictionaryValue node;
1851 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1852 node.SetBoolean(kAccessibleLoaded,
1853 document_load_state_ != LOAD_STATE_LOADING);
1854 bool has_permissions =
1855 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1856 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1857 node.SetBoolean(kAccessibleCopyable, has_permissions);
1858 std::string json;
1859 base::JSONWriter::Write(&node, &json);
1860 return pp::Var(json);
1861 } else if (args[0].is_number()) {
1862 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1863 }
1864 }
1865 if (method_str == kJSPrintPreviewPageCount) {
1866 if (args.size() == 1 && args[0].is_number())
1867 SetPrintPreviewMode(args[0].AsInt());
1868 return pp::Var();
1869 }
1870 if (method_str == kJSLoadPreviewPage) {
1871 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1872 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1873 return pp::Var();
1874 }
1875 if (method_str == kJSGetPageLocationNormalized) {
1876 const size_t kMaxLength = 30;
1877 char location_info[kMaxLength];
1878 int page_idx = engine_->GetMostVisiblePage();
1879 if (page_idx < 0)
1880 return pp::Var(std::string());
1881 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1882 int v_scrollbar_reserved_thickness =
1883 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1884
1885 rect.set_x(rect.x() + ((plugin_size_.width() -
1886 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1887 base::snprintf(location_info,
1888 kMaxLength,
1889 "%0.4f;%0.4f;%0.4f;%0.4f;",
1890 rect.x() / static_cast<float>(plugin_size_.width()),
1891 rect.y() / static_cast<float>(plugin_size_.height()),
1892 rect.width() / static_cast<float>(plugin_size_.width()),
1893 rect.height()/ static_cast<float>(plugin_size_.height()));
1894 return pp::Var(std::string(location_info));
1895 }
1896 if (method_str == kJSSetPageNumbers) {
1897 if (args.size() != 1 || !args[0].is_string())
1898 return pp::Var();
1899 const int num_pages_signed = engine_->GetNumberOfPages();
1900 if (num_pages_signed <= 0)
1901 return pp::Var();
1902 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1903 base::JSONReader::Read(args[0].AsString(), false)));
1904 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1905 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1906 return pp::Var();
1907
1908 std::vector<int> print_preview_page_numbers;
1909 for (size_t index = 0; index < num_pages; ++index) {
1910 int page_number = 0; // |page_number| is 1-based.
1911 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1912 return pp::Var();
1913 print_preview_page_numbers.push_back(page_number);
1914 }
1915 print_preview_page_numbers_ = print_preview_page_numbers;
1916 page_indicator_.set_current_page(GetPageNumberToDisplay());
1917 return pp::Var();
1918 }
1919 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1920 // In JS, creating a synthetic keyboard event and dispatching it always
1921 // result in a keycode of 0.
1922 if (method_str == kJSSendKeyEvent) {
1923 if (args.size() == 1 && args[0].is_number()) {
1924 pp::KeyboardInputEvent event(
1925 this, // instance
1926 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1927 0, // timestamp, not used for kbd events.
1928 0, // no modifiers.
1929 args[0].AsInt(), // keycode.
1930 pp::Var()); // no char text needed.
1931 HandleInputEvent(event);
1932 }
1933 }
1934 return pp::Var();
1935 }
1936
1937 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1938 bool force_no_horizontal_scrollbar = false;
1939 int scrollbar_thickness = GetScrollbarThickness();
1940
1941 if (old_device_scale != device_scale_) {
1942 // Change in device scale forces us to recreate resources
1943 ConfigureNumberImageGenerator();
1944
1945 CreateToolbar(current_tb_info_, current_tb_info_size_);
1946 // Load autoscroll anchor image.
1947 autoscroll_anchor_ =
1948 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1949
1950 ConfigurePageIndicator();
1951 ConfigureProgressBar();
1952
1953 pp::Point scroll_position = engine_->GetScrollPosition();
1954 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1955 engine_->SetScrollPosition(scroll_position);
1956 }
1957
1958 UpdateZoomScale();
1959 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1960 engine_->ZoomUpdated(zoom_ * device_scale_);
1961 if (zoom_ != old_zoom)
1962 ZoomChanged(zoom_);
1963
1964 available_area_ = pp::Rect(plugin_size_);
1965 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1966 CreateVerticalScrollbar();
1967 } else {
1968 DestroyVerticalScrollbar();
1969 }
1970
1971 int v_scrollbar_reserved_thickness =
1972 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1973
1974 if (!force_no_horizontal_scrollbar &&
1975 GetDocumentPixelWidth() >
1976 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1977 CreateHorizontalScrollbar();
1978
1979 // Adding the horizontal scrollbar now might cause us to need vertical
1980 // scrollbars.
1981 if (GetDocumentPixelHeight() >
1982 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1983 CreateVerticalScrollbar();
1984 }
1985
1986 } else {
1987 DestroyHorizontalScrollbar();
1988 }
1989
1990 #ifdef ENABLE_THUMBNAILS
1991 int thumbnails_pos = 0, thumbnails_total = 0;
1992 #endif
1993 if (v_scrollbar_.get()) {
1994 v_scrollbar_->SetScale(device_scale_);
1995 available_area_.set_width(
1996 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
1997
1998 #ifdef ENABLE_THUMBNAILS
1999 int height = plugin_size_.height();
2000 #endif
2001 int height_dip = plugin_dip_size_.height();
2002
2003 #if defined(OS_MACOSX)
2004 // Before Lion, Mac always had the resize at the bottom. After that, it
2005 // never did.
2006 if ((base::mac::IsOSSnowLeopard() && full_) ||
2007 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2008 #else
2009 if (h_scrollbar_.get()) {
2010 #endif // defined(OS_MACOSX)
2011 #ifdef ENABLE_THUMBNAILS
2012 height -= GetScaled(GetScrollbarThickness());
2013 #endif
2014 height_dip -= GetScrollbarThickness();
2015 }
2016 #ifdef ENABLE_THUMBNAILS
2017 int32 doc_height = GetDocumentPixelHeight();
2018 #endif
2019 int32 doc_height_dip =
2020 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2021 #if defined(OS_MACOSX)
2022 // On the Mac we always allow room for the resize button (whose width is
2023 // the same as that of the scrollbar) in full mode. However, if there is no
2024 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2025 // end of the document. This is because the scrollbar assumes that its own
2026 // height (in the case of a vscroll bar) is the same as the height of the
2027 // viewport. Since the viewport is actually larger, we compensate by
2028 // adjusting the document height. Similar logic applies below for the
2029 // horizontal scrollbar.
2030 // For example, if the document size is 1000, and the viewport size is 200,
2031 // then the scrollbar position at the end will be 800. In this case the
2032 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2033 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2034 // be 785. Making the document size 985 achieves this.
2035 if (full_ && !h_scrollbar_.get()) {
2036 #ifdef ENABLE_THUMBNAILS
2037 doc_height -= GetScaled(GetScrollbarThickness());
2038 #endif
2039 doc_height_dip -= GetScrollbarThickness();
2040 }
2041 #endif // defined(OS_MACOSX)
2042
2043 int32 position;
2044 position = v_scrollbar_->GetValue();
2045 position = static_cast<int>(position * zoom_ / old_zoom);
2046 valid_v_range_ = doc_height_dip - height_dip;
2047 if (position > valid_v_range_)
2048 position = valid_v_range_;
2049
2050 v_scrollbar_->SetValue(position);
2051
2052 PP_Rect loc;
2053 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2054 if (IsOverlayScrollbar())
2055 loc.point.x -= scrollbar_thickness;
2056 loc.point.y = 0;
2057 loc.size.width = scrollbar_thickness;
2058 loc.size.height = height_dip;
2059 v_scrollbar_->SetLocation(loc);
2060 v_scrollbar_->SetDocumentSize(doc_height_dip);
2061
2062 #ifdef ENABLE_THUMBNAILS
2063 thumbnails_pos = position;
2064 thumbnails_total = doc_height - height;
2065 #endif
2066 }
2067
2068 if (h_scrollbar_.get()) {
2069 h_scrollbar_->SetScale(device_scale_);
2070 available_area_.set_height(
2071 std::max(0, plugin_size_.height() -
2072 GetScaled(GetScrollbarReservedThickness())));
2073
2074 int width_dip = plugin_dip_size_.width();
2075
2076 // See note above.
2077 #if defined(OS_MACOSX)
2078 if ((base::mac::IsOSSnowLeopard() && full_) ||
2079 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2080 #else
2081 if (v_scrollbar_.get()) {
2082 #endif
2083 width_dip -= GetScrollbarThickness();
2084 }
2085 int32 doc_width_dip =
2086 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2087 #if defined(OS_MACOSX)
2088 // See comment in the above if (v_scrollbar_.get()) block.
2089 if (full_ && !v_scrollbar_.get())
2090 doc_width_dip -= GetScrollbarThickness();
2091 #endif // defined(OS_MACOSX)
2092
2093 int32 position;
2094 position = h_scrollbar_->GetValue();
2095 position = static_cast<int>(position * zoom_ / old_zoom);
2096 position = std::min(position, doc_width_dip - width_dip);
2097
2098 h_scrollbar_->SetValue(position);
2099
2100 PP_Rect loc;
2101 loc.point.x = 0;
2102 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2103 if (IsOverlayScrollbar())
2104 loc.point.y -= scrollbar_thickness;
2105 loc.size.width = width_dip;
2106 loc.size.height = scrollbar_thickness;
2107 h_scrollbar_->SetLocation(loc);
2108 h_scrollbar_->SetDocumentSize(doc_width_dip);
2109 }
2110
2111 int doc_width = GetDocumentPixelWidth();
2112 if (doc_width < available_area_.width()) {
2113 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2114 available_area_.set_width(doc_width);
2115 }
2116 int doc_height = GetDocumentPixelHeight();
2117 if (doc_height < available_area_.height()) {
2118 available_area_.set_height(doc_height);
2119 }
2120
2121 // We'll invalidate the entire plugin anyways.
2122 UpdateToolbarPosition(false);
2123 UpdateProgressBarPosition(false);
2124 UpdatePageIndicatorPosition(false);
2125
2126 #ifdef ENABLE_THUMBNAILS
2127 // Update thumbnail control position.
2128 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2129 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2130 GetScaled(kThumbnailsWidth), plugin_size_.height());
2131 if (v_scrollbar_.get())
2132 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2133 if (h_scrollbar_.get())
2134 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2135 thumbnails_.SetRect(thumbnails_rc, false);
2136 #endif
2137
2138 CalculateBackgroundParts();
2139 engine_->PageOffsetUpdated(available_area_.point());
2140 engine_->PluginSizeUpdated(available_area_.size());
2141
2142 if (!document_size_.GetArea())
2143 return;
2144 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2145
2146 // Run the plugin size change callback asynchronously. This function can be
2147 // invoked by a layout change which should not re-enter into JS synchronously.
2148 pp::CompletionCallback callback =
2149 callback_factory_.NewCallback(&Instance::RunCallback,
2150 on_plugin_size_changed_callback_);
2151 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2152 }
2153
2154 void Instance::RunCallback(int32_t, pp::Var callback) {
2155 if (callback.is_string())
2156 ExecuteScript(callback);
2157 }
2158
2159 void Instance::CreateHorizontalScrollbar() {
2160 if (h_scrollbar_.get())
2161 return;
2162
2163 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2164 }
2165
2166 void Instance::CreateVerticalScrollbar() {
2167 if (v_scrollbar_.get())
2168 return;
2169
2170 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2171 }
2172
2173 void Instance::DestroyHorizontalScrollbar() {
2174 if (!h_scrollbar_.get())
2175 return;
2176 if (h_scrollbar_->GetValue())
2177 engine_->ScrolledToXPosition(0);
2178 h_scrollbar_.reset();
2179 }
2180
2181 void Instance::DestroyVerticalScrollbar() {
2182 if (!v_scrollbar_.get())
2183 return;
2184 if (v_scrollbar_->GetValue())
2185 engine_->ScrolledToYPosition(0);
2186 v_scrollbar_.reset();
2187 page_indicator_.Show(false, true);
2188 }
2189
2190 int Instance::GetScrollbarThickness() {
2191 if (scrollbar_thickness_ == -1) {
2192 pp::Scrollbar_Dev temp_scrollbar(this, false);
2193 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2194 scrollbar_reserved_thickness_ =
2195 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2196 }
2197
2198 return scrollbar_thickness_;
2199 }
2200
2201 int Instance::GetScrollbarReservedThickness() {
2202 GetScrollbarThickness();
2203 return scrollbar_reserved_thickness_;
2204 }
2205
2206 bool Instance::IsOverlayScrollbar() {
2207 return GetScrollbarReservedThickness() == 0;
2208 }
2209
2210 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2211 toolbar_.reset(new FadingControls());
2212
2213 DCHECK(tb_info);
2214 DCHECK(size >= 0);
2215
2216 // Remember the current toolbar information in case we need to recreate the
2217 // images later.
2218 current_tb_info_ = tb_info;
2219 current_tb_info_size_ = size;
2220
2221 int max_height = 0;
2222 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2223 ScalePoint(device_scale_, &origin);
2224
2225 std::list<Button*> buttons;
2226 for (size_t i = 0; i < size; i++) {
2227 Button* btn = new Button;
2228 pp::ImageData normal_face =
2229 CreateResourceImage(tb_info[i].normal);
2230 btn->CreateButton(tb_info[i].id,
2231 origin,
2232 true,
2233 toolbar_.get(),
2234 tb_info[i].style,
2235 normal_face,
2236 CreateResourceImage(tb_info[i].highlighted),
2237 CreateResourceImage(tb_info[i].pressed));
2238 buttons.push_back(btn);
2239
2240 origin += pp::Point(normal_face.size().width(), 0);
2241 max_height = std::max(max_height, normal_face.size().height());
2242 }
2243
2244 pp::Rect rc_toolbar(0, 0,
2245 origin.x() + GetToolbarRightOffset(),
2246 origin.y() + max_height + GetToolbarBottomOffset());
2247 toolbar_->CreateFadingControls(
2248 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2249
2250 std::list<Button*>::iterator iter;
2251 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2252 toolbar_->AddControl(*iter);
2253 }
2254 }
2255
2256 int Instance::GetToolbarRightOffset() {
2257 int scrollbar_thickness = GetScrollbarThickness();
2258 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2259 }
2260
2261 int Instance::GetToolbarBottomOffset() {
2262 int scrollbar_thickness = GetScrollbarThickness();
2263 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2264 }
2265
2266 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2267 std::vector<pp::ImageData> num_images(10);
2268 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2269 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2270 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2271 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2272 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2273 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2274 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2275 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2276 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2277 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2278 return num_images;
2279 }
2280
2281 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2282 pp::ImageData* background) {
2283 std::vector<pp::ImageData> result(9);
2284 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2285 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2286 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2287 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2288 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2289 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2290 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2291 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2292 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2293 *background = CreateResourceImage(
2294 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2295 return result;
2296 }
2297
2298 void Instance::CreatePageIndicator(bool always_visible) {
2299 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2300 number_image_generator(), always_visible);
2301 ConfigurePageIndicator();
2302 }
2303
2304 void Instance::ConfigurePageIndicator() {
2305 pp::ImageData background =
2306 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2307 page_indicator_.Configure(pp::Point(), background);
2308 }
2309
2310 void Instance::CreateProgressBar() {
2311 pp::ImageData background;
2312 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2313 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2314 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2315 device_scale_, images, background, text);
2316 }
2317
2318 void Instance::ConfigureProgressBar() {
2319 pp::ImageData background;
2320 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2321 progress_bar_.Reconfigure(background, images, device_scale_);
2322 }
2323
2324 void Instance::CreateThumbnails() {
2325 thumbnails_.CreateThumbnailControl(
2326 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2327 number_image_generator());
2328 }
2329
2330 void Instance::LoadUrl(const std::string& url) {
2331 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2332 }
2333
2334 void Instance::LoadPreviewUrl(const std::string& url) {
2335 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2336 }
2337
2338 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2339 void (Instance::* method)(int32_t)) {
2340 pp::URLRequestInfo request(this);
2341 request.SetURL(url);
2342 request.SetMethod("GET");
2343
2344 *loader = CreateURLLoaderInternal();
2345 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2346 int rv = loader->Open(request, callback);
2347 if (rv != PP_OK_COMPLETIONPENDING)
2348 callback.Run(rv);
2349 }
2350
2351 pp::URLLoader Instance::CreateURLLoaderInternal() {
2352 pp::URLLoader loader(this);
2353
2354 const PPB_URLLoaderTrusted* trusted_interface =
2355 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2356 pp::Module::Get()->GetBrowserInterface(
2357 PPB_URLLOADERTRUSTED_INTERFACE));
2358 if (trusted_interface)
2359 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2360 return loader;
2361 }
2362
2363 int Instance::GetInitialPage(const std::string& url) {
2364 size_t found_idx = url.find('#');
2365 if (found_idx == std::string::npos)
2366 return -1;
2367
2368 const std::string& ref = url.substr(found_idx + 1);
2369 std::vector<std::string> fragments;
2370 Tokenize(ref, kDelimiters, &fragments);
2371
2372 // Page number to return, zero-based.
2373 int page = -1;
2374
2375 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2376 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2377 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2378 return engine_->GetNamedDestinationPage(fragments[0]);
2379
2380 for (size_t i = 0; i < fragments.size(); ++i) {
2381 std::vector<std::string> key_value;
2382 base::SplitString(fragments[i], '=', &key_value);
2383 if (key_value.size() != 2)
2384 continue;
2385 const std::string& key = key_value[0];
2386 const std::string& value = key_value[1];
2387
2388 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2389 // |page_value| is 1-based.
2390 int page_value = -1;
2391 if (base::StringToInt(value, &page_value) && page_value > 0)
2392 page = page_value - 1;
2393 continue;
2394 }
2395 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2396 // |page_value| is 0-based.
2397 int page_value = engine_->GetNamedDestinationPage(value);
2398 if (page_value >= 0)
2399 page = page_value;
2400 continue;
2401 }
2402 }
2403 return page;
2404 }
2405
2406 void Instance::UpdateToolbarPosition(bool invalidate) {
2407 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2408 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2409 GetScaled(kToolbarFadingOffsetLeft);
2410 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2411 GetScaled(kToolbarFadingOffsetBottom);
2412
2413 // Update toolbar position
2414 if (plugin_size_.width() < min_toolbar_width ||
2415 plugin_size_.height() < min_toolbar_height) {
2416 // Disable toolbar if it does not fit on the screen.
2417 toolbar_->Show(false, invalidate);
2418 } else {
2419 pp::Point offset(
2420 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2421 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2422 toolbar_->MoveBy(offset, invalidate);
2423
2424 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2425 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2426 toolbar_->Show(painted_first_page_, invalidate);
2427 }
2428 }
2429
2430 void Instance::UpdateProgressBarPosition(bool invalidate) {
2431 // TODO(gene): verify we don't overlap with toolbar.
2432 int scrollbar_thickness = GetScrollbarThickness();
2433 pp::Point progress_origin(
2434 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2435 plugin_size_.height() - progress_bar_.rect().height() -
2436 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2437 progress_bar_.MoveTo(progress_origin, invalidate);
2438 }
2439
2440 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2441 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2442 pp::Point origin(
2443 plugin_size_.width() - page_indicator_.rect().width() -
2444 GetScaled(GetScrollbarReservedThickness()),
2445 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2446 doc_height, plugin_size_.height()));
2447 page_indicator_.MoveTo(origin, invalidate);
2448 }
2449
2450 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2451 double old_zoom = zoom_;
2452
2453 zoom_mode_ = zoom_mode;
2454 if (zoom_mode_ == ZOOM_SCALE)
2455 zoom_ = scale;
2456 UpdateZoomScale();
2457
2458 engine_->ZoomUpdated(zoom_ * device_scale_);
2459 OnGeometryChanged(old_zoom, device_scale_);
2460
2461 // If fit-to-height, snap to the beginning of the most visible page.
2462 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2463 ScrollToPage(engine_->GetMostVisiblePage());
2464 }
2465
2466 // Update sticky buttons to the current zoom style.
2467 Button* ftp_btn = static_cast<Button*>(
2468 toolbar_->GetControl(kFitToPageButtonId));
2469 Button* ftw_btn = static_cast<Button*>(
2470 toolbar_->GetControl(kFitToWidthButtonId));
2471 switch (zoom_mode_) {
2472 case ZOOM_FIT_TO_PAGE:
2473 ftp_btn->SetPressedState(true);
2474 ftw_btn->SetPressedState(false);
2475 break;
2476 case ZOOM_FIT_TO_WIDTH:
2477 ftw_btn->SetPressedState(true);
2478 ftp_btn->SetPressedState(false);
2479 break;
2480 default:
2481 ftw_btn->SetPressedState(false);
2482 ftp_btn->SetPressedState(false);
2483 }
2484 }
2485
2486 void Instance::UpdateZoomScale() {
2487 switch (zoom_mode_) {
2488 case ZOOM_SCALE:
2489 break; // Keep current scale.
2490 case ZOOM_FIT_TO_PAGE: {
2491 int page_num = engine_->GetFirstVisiblePage();
2492 if (page_num == -1)
2493 break;
2494 pp::Rect rc = engine_->GetPageRect(page_num);
2495 if (!rc.height())
2496 break;
2497 // Calculate fit to width zoom level.
2498 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2499 GetScrollbarReservedThickness()) / document_size_.width();
2500 // Calculate fit to height zoom level. If document will not fit
2501 // horizontally, adjust zoom level to allow space for horizontal
2502 // scrollbar.
2503 double fth_zoom =
2504 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2505 if (fth_zoom * document_size_.width() >
2506 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2507 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2508 - GetScrollbarReservedThickness()) / rc.height();
2509 zoom_ = std::min(ftw_zoom, fth_zoom);
2510 } break;
2511 case ZOOM_FIT_TO_WIDTH:
2512 case ZOOM_AUTO:
2513 if (!document_size_.width())
2514 break;
2515 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2516 GetScrollbarReservedThickness()) / document_size_.width();
2517 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2518 zoom_ = 1.0;
2519 break;
2520 }
2521 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2522 }
2523
2524 double Instance::CalculateZoom(uint32 control_id) const {
2525 if (control_id == kZoomInButtonId) {
2526 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2527 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2528 if (current_zoom - content::kEpsilon > zoom_)
2529 return current_zoom;
2530 }
2531 } else {
2532 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2533 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2534 if (current_zoom + content::kEpsilon < zoom_)
2535 return current_zoom;
2536 }
2537 }
2538 return zoom_;
2539 }
2540
2541 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2542 pp::ImageData resource_data;
2543 if (hidpi_enabled_) {
2544 resource_data =
2545 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2546 }
2547
2548 return resource_data.data() ? resource_data
2549 : pp::PDF::GetResourceImage(this, image_id);
2550 }
2551
2552 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2553 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2554 if (!rv.is_string())
2555 return std::string();
2556
2557 return rv.AsString();
2558 }
2559
2560 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2561 std::string str(GetLocalizedString(id));
2562
2563 pp::FontDescription_Dev description;
2564 description.set_family(PP_FONTFAMILY_SANSSERIF);
2565 description.set_size(kMessageTextSize * device_scale_);
2566 pp::Font_Dev font(this, description);
2567 int length = font.MeasureSimpleText(str);
2568 pp::Point point(top_center);
2569 point.set_x(point.x() - length / 2);
2570 DCHECK(!image_data_.is_null());
2571 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2572 }
2573
2574 void Instance::SetPrintPreviewMode(int page_count) {
2575 if (!IsPrintPreview() || page_count <= 0) {
2576 print_preview_page_count_ = 0;
2577 return;
2578 }
2579
2580 print_preview_page_count_ = page_count;
2581 ScrollToPage(0);
2582 engine_->AppendBlankPages(print_preview_page_count_);
2583 if (preview_pages_info_.size() > 0)
2584 LoadAvailablePreviewPage();
2585 }
2586
2587 bool Instance::IsPrintPreview() {
2588 return IsPrintPreviewUrl(url_);
2589 }
2590
2591 int Instance::GetPageNumberToDisplay() {
2592 int page = engine_->GetMostVisiblePage();
2593 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2594 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2595 return print_preview_page_numbers_[page];
2596 }
2597 return page + 1;
2598 }
2599
2600 void Instance::ProcessPreviewPageInfo(const std::string& url,
2601 int dst_page_index) {
2602 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2603 return;
2604
2605 int src_page_index = ExtractPrintPreviewPageIndex(url);
2606 if (src_page_index < 1)
2607 return;
2608
2609 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2610 LoadAvailablePreviewPage();
2611 }
2612
2613 void Instance::LoadAvailablePreviewPage() {
2614 if (preview_pages_info_.size() <= 0)
2615 return;
2616
2617 std::string url = preview_pages_info_.front().first;
2618 int dst_page_index = preview_pages_info_.front().second;
2619 int src_page_index = ExtractPrintPreviewPageIndex(url);
2620 if (src_page_index < 1 ||
2621 dst_page_index >= print_preview_page_count_ ||
2622 preview_document_load_state_ == LOAD_STATE_LOADING) {
2623 return;
2624 }
2625
2626 preview_document_load_state_ = LOAD_STATE_LOADING;
2627 LoadPreviewUrl(url);
2628 }
2629
2630 void Instance::EnableAutoscroll(const pp::Point& origin) {
2631 if (is_autoscroll_)
2632 return;
2633
2634 pp::Size client_size = plugin_size_;
2635 if (v_scrollbar_.get())
2636 client_size.Enlarge(-GetScrollbarThickness(), 0);
2637 if (h_scrollbar_.get())
2638 client_size.Enlarge(0, -GetScrollbarThickness());
2639
2640 // Do not allow autoscroll if client area is too small.
2641 if (autoscroll_anchor_.size().width() > client_size.width() ||
2642 autoscroll_anchor_.size().height() > client_size.height())
2643 return;
2644
2645 autoscroll_rect_ = pp::Rect(
2646 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2647 origin.y() - autoscroll_anchor_.size().height() / 2),
2648 autoscroll_anchor_.size());
2649
2650 // Make sure autoscroll anchor is in the client area.
2651 if (autoscroll_rect_.right() > client_size.width()) {
2652 autoscroll_rect_.set_x(
2653 client_size.width() - autoscroll_anchor_.size().width());
2654 }
2655 if (autoscroll_rect_.bottom() > client_size.height()) {
2656 autoscroll_rect_.set_y(
2657 client_size.height() - autoscroll_anchor_.size().height());
2658 }
2659
2660 if (autoscroll_rect_.x() < 0)
2661 autoscroll_rect_.set_x(0);
2662 if (autoscroll_rect_.y() < 0)
2663 autoscroll_rect_.set_y(0);
2664
2665 is_autoscroll_ = true;
2666 Invalidate(kAutoScrollId, autoscroll_rect_);
2667
2668 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2669 }
2670
2671 void Instance::DisableAutoscroll() {
2672 if (is_autoscroll_) {
2673 is_autoscroll_ = false;
2674 Invalidate(kAutoScrollId, autoscroll_rect_);
2675 }
2676 }
2677
2678 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2679 // Scroll only if mouse pointer is outside of the anchor area.
2680 if (autoscroll_rect_.Contains(mouse_pos)) {
2681 autoscroll_x_ = 0;
2682 autoscroll_y_ = 0;
2683 return PP_CURSORTYPE_MIDDLEPANNING;
2684 }
2685
2686 // Relative position to the center of anchor area.
2687 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2688
2689 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2690 double angle = atan2(static_cast<double>(rel_pos.y()),
2691 static_cast<double>(rel_pos.x()));
2692
2693 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2694 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2695
2696 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2697 // so negative angle represent north direction.
2698 if (angle < - (M_PI * 7.0 / 8.0)) {
2699 // going west
2700 return PP_CURSORTYPE_WESTPANNING;
2701 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2702 // going north-west
2703 return PP_CURSORTYPE_NORTHWESTPANNING;
2704 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2705 // going north.
2706 return PP_CURSORTYPE_NORTHPANNING;
2707 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2708 // going north-east
2709 return PP_CURSORTYPE_NORTHEASTPANNING;
2710 } else if (angle < M_PI * 1.0 / 8.0) {
2711 // going east.
2712 return PP_CURSORTYPE_EASTPANNING;
2713 } else if (angle < M_PI * 3.0 / 8.0) {
2714 // going south-east
2715 return PP_CURSORTYPE_SOUTHEASTPANNING;
2716 } else if (angle < M_PI * 5.0 / 8.0) {
2717 // going south.
2718 return PP_CURSORTYPE_SOUTHPANNING;
2719 } else if (angle < M_PI * 7.0 / 8.0) {
2720 // going south-west
2721 return PP_CURSORTYPE_SOUTHWESTPANNING;
2722 }
2723
2724 // went around the circle, going west again
2725 return PP_CURSORTYPE_WESTPANNING;
2726 }
2727
2728 void Instance::ConfigureNumberImageGenerator() {
2729 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2730 pp::ImageData number_background = CreateResourceImage(
2731 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2732 number_image_generator_->Configure(number_background,
2733 num_images,
2734 device_scale_);
2735 }
2736
2737 NumberImageGenerator* Instance::number_image_generator() {
2738 if (!number_image_generator_.get()) {
2739 number_image_generator_.reset(new NumberImageGenerator(this));
2740 ConfigureNumberImageGenerator();
2741 }
2742 return number_image_generator_.get();
2743 }
2744
2745 int Instance::GetScaled(int x) const {
2746 return static_cast<int>(x * device_scale_);
2747 }
2748
2749 void Instance::UserMetricsRecordAction(const std::string& action) {
2750 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2751 }
2752
2753 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2754 : instance_(instance) {
2755 }
2756
2757 PDFScriptableObject::~PDFScriptableObject() {
2758 }
2759
2760 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2761 return instance_->HasScriptableMethod(name, exception);
2762 }
2763
2764 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2765 const std::vector<pp::Var>& args,
2766 pp::Var* exception) {
2767 return instance_->CallScriptableMethod(method, args, exception);
2768 }
2769
2770 } // namespace chrome_pdf