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Roll android_tools to the latest.
[chromium-blink-merge.git] / pdf / instance.cc
blobbb13fcc210eba34fdd4a03dde8fe5c9ff6b73ad0
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "pdf/instance.h"
6
7 #include <algorithm> // for min()
8 #define _USE_MATH_DEFINES // for M_PI
9 #include <cmath> // for log() and pow()
10 #include <math.h>
11 #include <list>
12
13 #include "base/json/json_reader.h"
14 #include "base/json/json_writer.h"
15 #include "base/logging.h"
16 #include "base/strings/string_number_conversions.h"
17 #include "base/strings/string_split.h"
18 #include "base/strings/string_util.h"
19 #include "base/values.h"
20 #include "chrome/browser/chrome_page_zoom_constants.h"
21 #include "chrome/common/content_restriction.h"
22 #include "content/public/common/page_zoom.h"
23 #include "net/base/escape.h"
24 #include "pdf/draw_utils.h"
25 #include "pdf/number_image_generator.h"
26 #include "pdf/pdf.h"
27 #include "pdf/resource_consts.h"
28 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
29 #include "ppapi/c/pp_errors.h"
30 #include "ppapi/c/pp_rect.h"
31 #include "ppapi/c/private/ppp_pdf.h"
32 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
33 #include "ppapi/cpp/core.h"
34 #include "ppapi/cpp/dev/font_dev.h"
35 #include "ppapi/cpp/dev/memory_dev.h"
36 #include "ppapi/cpp/dev/text_input_dev.h"
37 #include "ppapi/cpp/module.h"
38 #include "ppapi/cpp/point.h"
39 #include "ppapi/cpp/private/pdf.h"
40 #include "ppapi/cpp/rect.h"
41 #include "ppapi/cpp/resource.h"
42 #include "ppapi/cpp/url_request_info.h"
43 #include "ui/events/keycodes/keyboard_codes.h"
44
45 #if defined(OS_MACOSX)
46 #include "base/mac/mac_util.h"
47 #endif
48
49 namespace chrome_pdf {
50
51 struct ToolbarButtonInfo {
52 uint32 id;
53 Button::ButtonStyle style;
54 PP_ResourceImage normal;
55 PP_ResourceImage highlighted;
56 PP_ResourceImage pressed;
57 };
58
59 namespace {
60
61 // Uncomment following #define to enable thumbnails.
62 // #define ENABLE_THUMBNAILS
63
64 const uint32 kToolbarSplashTimeoutMs = 6000;
65 const uint32 kMessageTextColor = 0xFF575757;
66 const uint32 kMessageTextSize = 22;
67 const uint32 kProgressFadeTimeoutMs = 250;
68 const uint32 kProgressDelayTimeoutMs = 1000;
69 const uint32 kAutoScrollTimeoutMs = 50;
70 const double kAutoScrollFactor = 0.2;
71
72 // Javascript methods.
73 const char kJSAccessibility[] = "accessibility";
74 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
75 const char kJSGetHeight[] = "getHeight";
76 const char kJSGetHorizontalScrollbarThickness[] =
77 "getHorizontalScrollbarThickness";
78 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
79 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
80 const char kJSGetWidth[] = "getWidth";
81 const char kJSGetZoomLevel[] = "getZoomLevel";
82 const char kJSGoToPage[] = "goToPage";
83 const char kJSGrayscale[] = "grayscale";
84 const char kJSLoadPreviewPage[] = "loadPreviewPage";
85 const char kJSOnLoad[] = "onload";
86 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
87 const char kJSOnScroll[] = "onScroll";
88 const char kJSPageXOffset[] = "pageXOffset";
89 const char kJSPageYOffset[] = "pageYOffset";
90 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
91 const char kJSReload[] = "reload";
92 const char kJSRemovePrintButton[] = "removePrintButton";
93 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
94 const char kJSSendKeyEvent[] = "sendKeyEvent";
95 const char kJSSetPageNumbers[] = "setPageNumbers";
96 const char kJSSetPageXOffset[] = "setPageXOffset";
97 const char kJSSetPageYOffset[] = "setPageYOffset";
98 const char kJSSetZoomLevel[] = "setZoomLevel";
99 const char kJSZoomFitToHeight[] = "fitToHeight";
100 const char kJSZoomFitToWidth[] = "fitToWidth";
101 const char kJSZoomIn[] = "zoomIn";
102 const char kJSZoomOut[] = "zoomOut";
103
104 // URL reference parameters.
105 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
106 // document from Adobe.
107 const char kDelimiters[] = "#&";
108 const char kNamedDest[] = "nameddest";
109 const char kPage[] = "page";
110
111 const char kChromePrint[] = "chrome://print/";
112
113 // Dictionary Value key names for the document accessibility info
114 const char kAccessibleNumberOfPages[] = "numberOfPages";
115 const char kAccessibleLoaded[] = "loaded";
116 const char kAccessibleCopyable[] = "copyable";
117
118 const ToolbarButtonInfo kPDFToolbarButtons[] = {
119 { kFitToPageButtonId, Button::BUTTON_STATE,
120 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
123 { kFitToWidthButtonId, Button::BUTTON_STATE,
124 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
127 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
128 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
131 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
132 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
135 { kSaveButtonId, Button::BUTTON_CLICKABLE,
136 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
139 { kPrintButtonId, Button::BUTTON_CLICKABLE,
140 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
143 };
144
145 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
146 { kFitToPageButtonId, Button::BUTTON_STATE,
147 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
150 { kFitToWidthButtonId, Button::BUTTON_STATE,
151 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
154 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
155 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
158 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
159 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
162 { kSaveButtonId, Button::BUTTON_CLICKABLE,
163 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
166 { kPrintButtonId, Button::BUTTON_CLICKABLE,
167 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
170 };
171
172 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
173 { kFitToPageButtonId, Button::BUTTON_STATE,
174 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
177 { kFitToWidthButtonId, Button::BUTTON_STATE,
178 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
181 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
182 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
185 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
186 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
189 };
190
191 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
192
193 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
194 pp::Var var;
195 void* object =
196 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
197 if (object)
198 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
199 return var.Detach();
200 }
201
202 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
203 void* object =
204 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
205 if (object) {
206 Instance* obj_instance = static_cast<Instance*>(object);
207 switch (type) {
208 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
209 obj_instance->RotateClockwise();
210 break;
211 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
212 obj_instance->RotateCounterclockwise();
213 break;
214 }
215 }
216 }
217
218 const PPP_Pdf ppp_private = {
219 &GetLinkAtPosition,
220 &Transform
221 };
222
223 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
224 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
225 std::vector<std::string> url_substr;
226 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
227 if (url_substr.size() != 3)
228 return -1;
229
230 if (url_substr[2] != "print.pdf")
231 return -1;
232
233 int page_index = 0;
234 if (!base::StringToInt(url_substr[1], &page_index))
235 return -1;
236 return page_index;
237 }
238
239 bool IsPrintPreviewUrl(const std::string& url) {
240 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
241 }
242
243 void ScalePoint(float scale, pp::Point* point) {
244 point->set_x(static_cast<int>(point->x() * scale));
245 point->set_y(static_cast<int>(point->y() * scale));
246 }
247
248 void ScaleRect(float scale, pp::Rect* rect) {
249 int left = static_cast<int>(floorf(rect->x() * scale));
250 int top = static_cast<int>(floorf(rect->y() * scale));
251 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
252 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
253 rect->SetRect(left, top, right - left, bottom - top);
254 }
255
256 template<class T>
257 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
258 DCHECK(lower_boundary <= upper_boundary);
259 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
260 }
261
262 } // namespace
263
264 Instance::Instance(PP_Instance instance)
265 : pp::InstancePrivate(instance),
266 pp::Find_Private(this),
267 pp::Printing_Dev(this),
268 pp::Selection_Dev(this),
269 pp::WidgetClient_Dev(this),
270 pp::Zoom_Dev(this),
271 cursor_(PP_CURSORTYPE_POINTER),
272 timer_pending_(false),
273 current_timer_id_(0),
274 zoom_(1.0),
275 device_scale_(1.0),
276 printing_enabled_(true),
277 hidpi_enabled_(false),
278 full_(IsFullFrame()),
279 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
280 did_call_start_loading_(false),
281 is_autoscroll_(false),
282 scrollbar_thickness_(-1),
283 scrollbar_reserved_thickness_(-1),
284 current_tb_info_(NULL),
285 current_tb_info_size_(0),
286 paint_manager_(this, this, true),
287 delayed_progress_timer_id_(0),
288 first_paint_(true),
289 painted_first_page_(false),
290 show_page_indicator_(false),
291 document_load_state_(LOAD_STATE_LOADING),
292 preview_document_load_state_(LOAD_STATE_COMPLETE),
293 told_browser_about_unsupported_feature_(false),
294 print_preview_page_count_(0) {
295 loader_factory_.Initialize(this);
296 timer_factory_.Initialize(this);
297 form_factory_.Initialize(this);
298 callback_factory_.Initialize(this);
299 engine_.reset(PDFEngine::Create(this));
300 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
301 AddPerInstanceObject(kPPPPdfInterface, this);
302
303 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
304 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
305 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
306 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
307 }
308
309 Instance::~Instance() {
310 if (timer_pending_) {
311 timer_factory_.CancelAll();
312 timer_pending_ = false;
313 }
314 // The engine may try to access this instance during its destruction.
315 // Make sure this happens early while the instance is still intact.
316 engine_.reset();
317 RemovePerInstanceObject(kPPPPdfInterface, this);
318 }
319
320 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
321 // For now, we hide HiDPI support behind a flag.
322 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
323 hidpi_enabled_ = true;
324
325 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
326 if (printing_enabled_) {
327 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
328 } else {
329 CreateToolbar(kPDFNoPrintToolbarButtons,
330 arraysize(kPDFNoPrintToolbarButtons));
331 }
332
333 CreateProgressBar();
334
335 // Load autoscroll anchor image.
336 autoscroll_anchor_ =
337 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
338
339 #ifdef ENABLE_THUMBNAILS
340 CreateThumbnails();
341 #endif
342 const char* url = NULL;
343 for (uint32_t i = 0; i < argc; ++i) {
344 if (strcmp(argn[i], "src") == 0) {
345 url = argv[i];
346 break;
347 }
348 }
349
350 if (!url)
351 return false;
352
353 CreatePageIndicator(IsPrintPreviewUrl(url));
354
355 if (!full_) {
356 // For PDFs embedded in a frame, we don't get the data automatically like we
357 // do for full-frame loads. Start loading the data manually.
358 LoadUrl(url);
359 } else {
360 DCHECK(!did_call_start_loading_);
361 pp::PDF::DidStartLoading(this);
362 did_call_start_loading_ = true;
363 }
364
365 ZoomLimitsChanged(kMinZoom, kMaxZoom);
366
367 text_input_.reset(new pp::TextInput_Dev(this));
368
369 url_ = url;
370 return engine_->New(url);
371 }
372
373 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
374 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
375 kProgressDelayTimeoutMs);
376 return engine_->HandleDocumentLoad(loader);
377 }
378
379 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
380 // To simplify things, convert the event into device coordinates if it is
381 // a mouse event.
382 pp::InputEvent event_device_res(event);
383 {
384 pp::MouseInputEvent mouse_event(event);
385 if (!mouse_event.is_null()) {
386 pp::Point point = mouse_event.GetPosition();
387 pp::Point movement = mouse_event.GetMovement();
388 ScalePoint(device_scale_, &point);
389 ScalePoint(device_scale_, &movement);
390 mouse_event = pp::MouseInputEvent(
391 this,
392 event.GetType(),
393 event.GetTimeStamp(),
394 event.GetModifiers(),
395 mouse_event.GetButton(),
396 point,
397 mouse_event.GetClickCount(),
398 movement);
399 event_device_res = mouse_event;
400 }
401 }
402
403 // Check if we need to go to autoscroll mode.
404 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
405 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
406 pp::MouseInputEvent mouse_event(event_device_res);
407 pp::Point pos = mouse_event.GetPosition();
408 EnableAutoscroll(pos);
409 UpdateCursor(CalculateAutoscroll(pos));
410 return true;
411 } else {
412 // Quit autoscrolling on any other event.
413 DisableAutoscroll();
414 }
415
416 #ifdef ENABLE_THUMBNAILS
417 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
418 thumbnails_.SlideOut();
419
420 if (thumbnails_.HandleEvent(event_device_res))
421 return true;
422 #endif
423
424 if (toolbar_->HandleEvent(event_device_res))
425 return true;
426
427 #ifdef ENABLE_THUMBNAILS
428 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
429 pp::MouseInputEvent mouse_event(event);
430 pp::Point pt = mouse_event.GetPosition();
431 pp::Rect v_scrollbar_rc;
432 v_scrollbar_->GetLocation(&v_scrollbar_rc);
433 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
434 // in the webkit that makes event.u.mouse.button
435 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
436 // To work around this issue we use modifier for now, and will switch
437 // to button once the bug is fixed and webkit got merged back to our tree.
438 if (v_scrollbar_rc.Contains(pt) &&
439 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
440 thumbnails_.SlideIn();
441 }
442
443 // When scrollbar is in the scrolling mode we should display thumbnails
444 // even the mouse is outside the thumbnail and scrollbar areas.
445 // If mouse is outside plugin area, we are still getting mouse move events
446 // while scrolling. See bug description for details:
447 // http://code.google.com/p/chromium/issues/detail?id=56444
448 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
449 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
450 !thumbnails_.rect().Contains(pt)) {
451 thumbnails_.SlideOut();
452 }
453 }
454 #endif
455
456 // Need to pass the event to the engine first, since if we're over an edit
457 // control we want it to get keyboard events (like space) instead of the
458 // scrollbar.
459 // TODO: will have to offset the mouse coordinates once we support bidi and
460 // there could be scrollbars on the left.
461 pp::InputEvent offset_event(event_device_res);
462 bool try_engine_first = true;
463 switch (offset_event.GetType()) {
464 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
465 case PP_INPUTEVENT_TYPE_MOUSEUP:
466 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
467 case PP_INPUTEVENT_TYPE_MOUSEENTER:
468 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
469 pp::MouseInputEvent mouse_event(event_device_res);
470 pp::MouseInputEvent mouse_event_dip(event);
471 pp::Point point = mouse_event.GetPosition();
472 point.set_x(point.x() - available_area_.x());
473 offset_event = pp::MouseInputEvent(
474 this,
475 event.GetType(),
476 event.GetTimeStamp(),
477 event.GetModifiers(),
478 mouse_event.GetButton(),
479 point,
480 mouse_event.GetClickCount(),
481 mouse_event.GetMovement());
482 if (!engine_->IsSelecting()) {
483 if (!IsOverlayScrollbar() &&
484 !available_area_.Contains(mouse_event.GetPosition())) {
485 try_engine_first = false;
486 } else if (IsOverlayScrollbar()) {
487 pp::Rect temp;
488 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
489 temp.Contains(mouse_event_dip.GetPosition())) ||
490 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
491 temp.Contains(mouse_event_dip.GetPosition()))) {
492 try_engine_first = false;
493 }
494 }
495 }
496 break;
497 }
498 default:
499 break;
500 }
501 if (try_engine_first && engine_->HandleEvent(offset_event))
502 return true;
503
504 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
505 // there is no horizontal scroll bar.
506 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
507 // Prev/Next page. Spacebar / shift+spacebar should do the same.
508 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
509 pp::KeyboardInputEvent keyboard_event(event);
510 bool no_h_scrollbar = !h_scrollbar_.get();
511 uint32_t key_code = keyboard_event.GetKeyCode();
512 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
513 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
514 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
515 bool has_shift =
516 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
517 bool key_is_space = key_code == ui::VKEY_SPACE;
518 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
519 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
520 }
521 if (page_down) {
522 int page = engine_->GetFirstVisiblePage();
523 // Engine calculates visible page including delimiter to the page size.
524 // We need to check here if the page itself is completely out of view and
525 // scroll to the next one in that case.
526 if (engine_->GetPageRect(page).bottom() * zoom_ <=
527 v_scrollbar_->GetValue())
528 page++;
529 ScrollToPage(page + 1);
530 UpdateCursor(PP_CURSORTYPE_POINTER);
531 return true;
532 } else if (page_up) {
533 int page = engine_->GetFirstVisiblePage();
534 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
535 page--;
536 ScrollToPage(page);
537 UpdateCursor(PP_CURSORTYPE_POINTER);
538 return true;
539 }
540 }
541
542 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
543 UpdateCursor(PP_CURSORTYPE_POINTER);
544 return true;
545 }
546
547 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
548 UpdateCursor(PP_CURSORTYPE_POINTER);
549 return true;
550 }
551
552 if (timer_pending_ &&
553 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
554 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
555 timer_factory_.CancelAll();
556 timer_pending_ = false;
557 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
558 engine_->IsSelecting()) {
559 bool set_timer = false;
560 pp::MouseInputEvent mouse_event(event);
561 if (v_scrollbar_.get() &&
562 (mouse_event.GetPosition().y() <= 0 ||
563 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
564 v_scrollbar_->ScrollBy(
565 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
566 set_timer = true;
567 }
568 if (h_scrollbar_.get() &&
569 (mouse_event.GetPosition().x() <= 0 ||
570 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
571 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
572 mouse_event.GetPosition().x() >= 0 ? 1: -1);
573 set_timer = true;
574 }
575
576 if (set_timer) {
577 last_mouse_event_ = pp::MouseInputEvent(event);
578
579 pp::CompletionCallback callback =
580 timer_factory_.NewCallback(&Instance::OnTimerFired);
581 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
582 timer_pending_ = true;
583 }
584 }
585
586 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN &&
587 event.GetModifiers() & kDefaultKeyModifier) {
588 pp::KeyboardInputEvent keyboard_event(event);
589 switch (keyboard_event.GetKeyCode()) {
590 case 'A':
591 engine_->SelectAll();
592 return true;
593 }
594 }
595
596 // Return true for unhandled clicks so the plugin takes focus.
597 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
598 }
599
600 void Instance::DidChangeView(const pp::View& view) {
601 pp::Rect view_rect(view.GetRect());
602 float device_scale = 1.0f;
603 float old_device_scale = device_scale_;
604 if (hidpi_enabled_)
605 device_scale = view.GetDeviceScale();
606 pp::Size view_device_size(view_rect.width() * device_scale,
607 view_rect.height() * device_scale);
608 if (view_device_size == plugin_size_ && device_scale == device_scale_)
609 return; // We don't care about the position, only the size.
610
611 image_data_ = pp::ImageData();
612 device_scale_ = device_scale;
613 plugin_dip_size_ = view_rect.size();
614 plugin_size_ = view_device_size;
615
616 paint_manager_.SetSize(view_device_size, device_scale_);
617
618 image_data_ = pp::ImageData(this,
619 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
620 plugin_size_,
621 false);
622 if (image_data_.is_null()) {
623 DCHECK(plugin_size_.IsEmpty());
624 return;
625 }
626
627 // View dimensions changed, disable autoscroll (if it was enabled).
628 DisableAutoscroll();
629
630 OnGeometryChanged(zoom_, old_device_scale);
631 }
632
633 pp::Var Instance::GetInstanceObject() {
634 if (instance_object_.is_undefined()) {
635 PDFScriptableObject* object = new PDFScriptableObject(this);
636 // The pp::Var takes ownership of object here.
637 instance_object_ = pp::VarPrivate(this, object);
638 }
639
640 return instance_object_;
641 }
642
643 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
644 pp::Point offset_point(point);
645 ScalePoint(device_scale_, &offset_point);
646 offset_point.set_x(offset_point.x() - available_area_.x());
647 return engine_->GetLinkAtPosition(offset_point);
648 }
649
650 pp::Var Instance::GetSelectedText(bool html) {
651 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
652 return pp::Var();
653 return engine_->GetSelectedText();
654 }
655
656 void Instance::InvalidateWidget(pp::Widget_Dev widget,
657 const pp::Rect& dirty_rect) {
658 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
659 if (!image_data_.is_null())
660 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
661 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
662 if (!image_data_.is_null())
663 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
664 } else {
665 // Possible to hit this condition since sometimes the scrollbar codes posts
666 // a task to do something later, and we could have deleted our reference in
667 // the meantime.
668 return;
669 }
670
671 pp::Rect dirty_rect_scaled = dirty_rect;
672 ScaleRect(device_scale_, &dirty_rect_scaled);
673 paint_manager_.InvalidateRect(dirty_rect_scaled);
674 }
675
676 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
677 uint32_t value) {
678 value = GetScaled(value);
679 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
680 engine_->ScrolledToYPosition(value);
681 pp::Rect rc;
682 v_scrollbar_->GetLocation(&rc);
683 int32 doc_height = GetDocumentPixelHeight();
684 doc_height -= GetScaled(rc.height());
685 #ifdef ENABLE_THUMBNAILS
686 if (thumbnails_.visible()) {
687 thumbnails_.SetPosition(value, doc_height, true);
688 }
689 #endif
690 pp::Point origin(
691 plugin_size_.width() - page_indicator_.rect().width() -
692 GetScaled(GetScrollbarReservedThickness()),
693 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
694 page_indicator_.MoveTo(origin, page_indicator_.visible());
695 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
696 engine_->ScrolledToXPosition(value);
697 }
698 }
699
700 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
701 bool overlay) {
702 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
703 OnGeometryChanged(zoom_, device_scale_);
704 }
705
706 uint32_t Instance::QuerySupportedPrintOutputFormats() {
707 return engine_->QuerySupportedPrintOutputFormats();
708 }
709
710 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
711 // For us num_pages is always equal to the number of pages in the PDF
712 // document irrespective of the printable area.
713 int32_t ret = engine_->GetNumberOfPages();
714 if (!ret)
715 return 0;
716
717 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
718 if ((print_settings.format & supported_formats) == 0)
719 return 0;
720
721 print_settings_.is_printing = true;
722 print_settings_.pepper_print_settings = print_settings;
723 engine_->PrintBegin();
724 return ret;
725 }
726
727 pp::Resource Instance::PrintPages(
728 const PP_PrintPageNumberRange_Dev* page_ranges,
729 uint32_t page_range_count) {
730 if (!print_settings_.is_printing)
731 return pp::Resource();
732
733 print_settings_.print_pages_called_ = true;
734 return engine_->PrintPages(page_ranges, page_range_count,
735 print_settings_.pepper_print_settings);
736 }
737
738 void Instance::PrintEnd() {
739 if (print_settings_.print_pages_called_)
740 UserMetricsRecordAction("PDF.PrintPage");
741 print_settings_.Clear();
742 engine_->PrintEnd();
743 }
744
745 bool Instance::IsPrintScalingDisabled() {
746 return !engine_->GetPrintScaling();
747 }
748
749 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
750 engine_->StartFind(text.c_str(), case_sensitive);
751 return true;
752 }
753
754 void Instance::SelectFindResult(bool forward) {
755 engine_->SelectFindResult(forward);
756 }
757
758 void Instance::StopFind() {
759 engine_->StopFind();
760 }
761
762 void Instance::Zoom(double scale, bool text_only) {
763 UserMetricsRecordAction("PDF.ZoomFromBrowser");
764 SetZoom(ZOOM_SCALE, scale);
765 }
766
767 void Instance::ZoomChanged(double factor) {
768 if (full_)
769 Zoom_Dev::ZoomChanged(factor);
770 }
771
772 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
773 std::vector<PaintManager::ReadyRect>* ready,
774 std::vector<pp::Rect>* pending) {
775 if (image_data_.is_null()) {
776 DCHECK(plugin_size_.IsEmpty());
777 return;
778 }
779 if (first_paint_) {
780 first_paint_ = false;
781 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
782 FillRect(rect, kBackgroundColor);
783 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
784 *pending = paint_rects;
785 return;
786 }
787
788 engine_->PrePaint();
789
790 for (size_t i = 0; i < paint_rects.size(); i++) {
791 // Intersect with plugin area since there could be pending invalidates from
792 // when the plugin area was larger.
793 pp::Rect rect =
794 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
795 if (rect.IsEmpty())
796 continue;
797
798 pp::Rect pdf_rect = available_area_.Intersect(rect);
799 if (!pdf_rect.IsEmpty()) {
800 pdf_rect.Offset(available_area_.x() * -1, 0);
801
802 std::vector<pp::Rect> pdf_ready;
803 std::vector<pp::Rect> pdf_pending;
804 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
805 for (size_t j = 0; j < pdf_ready.size(); ++j) {
806 pdf_ready[j].Offset(available_area_.point());
807 ready->push_back(
808 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
809 }
810 for (size_t j = 0; j < pdf_pending.size(); ++j) {
811 pdf_pending[j].Offset(available_area_.point());
812 pending->push_back(pdf_pending[j]);
813 }
814 }
815
816 for (size_t j = 0; j < background_parts_.size(); ++j) {
817 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
818 if (!intersection.IsEmpty()) {
819 FillRect(intersection, background_parts_[j].color);
820 ready->push_back(
821 PaintManager::ReadyRect(intersection, image_data_, false));
822 }
823 }
824
825 if (document_load_state_ == LOAD_STATE_FAILED) {
826 pp::Point top_center;
827 top_center.set_x(plugin_size_.width() / 2);
828 top_center.set_y(plugin_size_.height() / 2);
829 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
830 }
831
832 #ifdef ENABLE_THUMBNAILS
833 thumbnails_.Paint(&image_data_, rect);
834 #endif
835 }
836
837 engine_->PostPaint();
838
839 // Must paint scrollbars after the background parts, in case we have an
840 // overlay scrollbar that's over the background. We also do this in a separate
841 // loop because the scrollbar painting logic uses the signal of whether there
842 // are pending paints or not to figure out if it should draw right away or
843 // not.
844 for (size_t i = 0; i < paint_rects.size(); i++) {
845 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
846 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
847 }
848
849 if (progress_bar_.visible())
850 PaintOverlayControl(&progress_bar_, &image_data_, ready);
851
852 if (page_indicator_.visible())
853 PaintOverlayControl(&page_indicator_, &image_data_, ready);
854
855 if (toolbar_->current_transparency() != kTransparentAlpha)
856 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
857
858 // Paint autoscroll anchor if needed.
859 if (is_autoscroll_) {
860 size_t limit = ready->size();
861 for (size_t i = 0; i < limit; i++) {
862 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
863 if (!anchor_rect.IsEmpty()) {
864 pp::Rect draw_rc = pp::Rect(
865 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
866 anchor_rect.y() - autoscroll_rect_.y()),
867 anchor_rect.size());
868 // Paint autoscroll anchor.
869 AlphaBlend(autoscroll_anchor_, draw_rc,
870 &image_data_, anchor_rect.point(), kOpaqueAlpha);
871 }
872 }
873 }
874 }
875
876 void Instance::PaintOverlayControl(
877 Control* ctrl,
878 pp::ImageData* image_data,
879 std::vector<PaintManager::ReadyRect>* ready) {
880 // Make sure that we only paint overlay controls over an area that's ready,
881 // i.e. not pending. Otherwise we'll mark the control rect as ready and
882 // it'll overwrite the pdf region.
883 std::list<pp::Rect> ctrl_rects;
884 for (size_t i = 0; i < ready->size(); i++) {
885 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
886 if (!rc.IsEmpty())
887 ctrl_rects.push_back(rc);
888 }
889
890 if (!ctrl_rects.empty()) {
891 ctrl->PaintMultipleRects(image_data, ctrl_rects);
892
893 std::list<pp::Rect>::iterator iter;
894 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
895 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
896 }
897 }
898 }
899
900 void Instance::DidOpen(int32_t result) {
901 if (result == PP_OK) {
902 engine_->HandleDocumentLoad(embed_loader_);
903 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
904 NOTREACHED();
905 }
906 }
907
908 void Instance::DidOpenPreview(int32_t result) {
909 if (result == PP_OK) {
910 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
911 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
912 } else {
913 NOTREACHED();
914 }
915 }
916
917 void Instance::PaintIfWidgetIntersects(
918 pp::Widget_Dev* widget,
919 const pp::Rect& rect,
920 std::vector<PaintManager::ReadyRect>* ready,
921 std::vector<pp::Rect>* pending) {
922 if (!widget)
923 return;
924
925 pp::Rect location;
926 if (!widget->GetLocation(&location))
927 return;
928
929 ScaleRect(device_scale_, &location);
930 location = location.Intersect(rect);
931 if (location.IsEmpty())
932 return;
933
934 if (IsOverlayScrollbar()) {
935 // If we're using overlay scrollbars, and there are pending paints under the
936 // scrollbar, don't update the scrollbar instantly. While it would be nice,
937 // we would need to double buffer the plugin area in order to make this
938 // work. This is because we'd need to always have a copy of what the pdf
939 // under the scrollbar looks like, and additionally we couldn't paint the
940 // pdf under the scrollbar if it's ready until we got the preceding flush.
941 // So in practice, it would make painting slower and introduce extra buffer
942 // copies for the general case.
943 for (size_t i = 0; i < pending->size(); ++i) {
944 if ((*pending)[i].Intersects(location))
945 return;
946 }
947
948 // Even if none of the pending paints are under the scrollbar, we never want
949 // to paint it if it's over the pdf if there are other pending paints.
950 // Otherwise different parts of the pdf plugin would display at different
951 // scroll offsets.
952 if (!pending->empty() && available_area_.Intersects(rect)) {
953 pending->push_back(location);
954 return;
955 }
956 }
957
958 pp::Rect location_dip = location;
959 ScaleRect(1.0f / device_scale_, &location_dip);
960
961 DCHECK(!image_data_.is_null());
962 widget->Paint(location_dip, &image_data_);
963
964 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
965 }
966
967 void Instance::OnTimerFired(int32_t) {
968 HandleInputEvent(last_mouse_event_);
969 }
970
971 void Instance::OnClientTimerFired(int32_t id) {
972 engine_->OnCallback(id);
973 }
974
975 void Instance::OnControlTimerFired(int32_t,
976 const uint32& control_id,
977 const uint32& timer_id) {
978 if (control_id == toolbar_->id()) {
979 toolbar_->OnTimerFired(timer_id);
980 } else if (control_id == progress_bar_.id()) {
981 if (timer_id == delayed_progress_timer_id_) {
982 if (document_load_state_ == LOAD_STATE_LOADING &&
983 !progress_bar_.visible()) {
984 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
985 }
986 delayed_progress_timer_id_ = 0;
987 } else {
988 progress_bar_.OnTimerFired(timer_id);
989 }
990 } else if (control_id == kAutoScrollId) {
991 if (is_autoscroll_) {
992 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
993 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
994 }
995 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
996 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
997 }
998
999 // Reschedule timer.
1000 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1001 }
1002 } else if (control_id == kPageIndicatorId) {
1003 page_indicator_.OnTimerFired(timer_id);
1004 }
1005 #ifdef ENABLE_THUMBNAILS
1006 else if (control_id == thumbnails_.id()) {
1007 thumbnails_.OnTimerFired(timer_id);
1008 }
1009 #endif
1010 }
1011
1012 void Instance::CalculateBackgroundParts() {
1013 background_parts_.clear();
1014 int v_scrollbar_thickness =
1015 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1016 int h_scrollbar_thickness =
1017 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1018 int width_without_scrollbar = std::max(
1019 plugin_size_.width() - v_scrollbar_thickness, 0);
1020 int height_without_scrollbar = std::max(
1021 plugin_size_.height() - h_scrollbar_thickness, 0);
1022 int left_width = available_area_.x();
1023 int right_start = available_area_.right();
1024 int right_width = abs(width_without_scrollbar - available_area_.right());
1025 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1026
1027 // Add the left, right, and bottom rectangles. Note: we assume only
1028 // horizontal centering.
1029 BackgroundPart part = {
1030 pp::Rect(0, 0, left_width, bottom),
1031 kBackgroundColor
1032 };
1033 if (!part.location.IsEmpty())
1034 background_parts_.push_back(part);
1035 part.location = pp::Rect(right_start, 0, right_width, bottom);
1036 if (!part.location.IsEmpty())
1037 background_parts_.push_back(part);
1038 part.location = pp::Rect(
1039 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1040 if (!part.location.IsEmpty())
1041 background_parts_.push_back(part);
1042
1043 if (h_scrollbar_thickness
1044 #if defined(OS_MACOSX)
1045 ||
1046 #else
1047 &&
1048 #endif
1049 v_scrollbar_thickness) {
1050 part.color = 0xFFFFFFFF;
1051 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1052 plugin_size_.height() - h_scrollbar_thickness,
1053 h_scrollbar_thickness,
1054 v_scrollbar_thickness);
1055 background_parts_.push_back(part);
1056 }
1057 }
1058
1059 int Instance::GetDocumentPixelWidth() const {
1060 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1061 }
1062
1063 int Instance::GetDocumentPixelHeight() const {
1064 return static_cast<int>(ceil(document_size_.height() *
1065 zoom_ *
1066 device_scale_));
1067 }
1068
1069 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1070 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1071 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1072 int stride = image_data_.stride();
1073 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1074 int height = rect.height();
1075 int width = rect.width();
1076 for (int y = 0; y < height; ++y) {
1077 for (int x = 0; x < width; ++x)
1078 *(ptr + x) = color;
1079 ptr += stride / 4;
1080 }
1081 }
1082
1083 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1084 document_size_ = size;
1085
1086 OnGeometryChanged(zoom_, device_scale_);
1087 }
1088
1089 void Instance::Invalidate(const pp::Rect& rect) {
1090 pp::Rect offset_rect(rect);
1091 offset_rect.Offset(available_area_.point());
1092 paint_manager_.InvalidateRect(offset_rect);
1093 }
1094
1095 void Instance::Scroll(const pp::Point& point) {
1096 pp::Rect scroll_area = available_area_;
1097 if (IsOverlayScrollbar()) {
1098 pp::Rect rc;
1099 if (h_scrollbar_.get()) {
1100 h_scrollbar_->GetLocation(&rc);
1101 ScaleRect(device_scale_, &rc);
1102 if (scroll_area.bottom() > rc.y()) {
1103 scroll_area.set_height(rc.y() - scroll_area.y());
1104 paint_manager_.InvalidateRect(rc);
1105 }
1106 }
1107 if (v_scrollbar_.get()) {
1108 v_scrollbar_->GetLocation(&rc);
1109 ScaleRect(device_scale_, &rc);
1110 if (scroll_area.right() > rc.x()) {
1111 scroll_area.set_width(rc.x() - scroll_area.x());
1112 paint_manager_.InvalidateRect(rc);
1113 }
1114 }
1115 }
1116 paint_manager_.ScrollRect(scroll_area, point);
1117
1118 if (toolbar_->current_transparency() != kTransparentAlpha)
1119 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1120
1121 if (progress_bar_.visible())
1122 paint_manager_.InvalidateRect(progress_bar_.rect());
1123
1124 if (is_autoscroll_)
1125 paint_manager_.InvalidateRect(autoscroll_rect_);
1126
1127 if (show_page_indicator_) {
1128 page_indicator_.set_current_page(GetPageNumberToDisplay());
1129 page_indicator_.Splash();
1130 }
1131
1132 if (page_indicator_.visible())
1133 paint_manager_.InvalidateRect(page_indicator_.rect());
1134
1135 // Run the scroll callback asynchronously. This function can be invoked by a
1136 // layout change which should not re-enter into JS synchronously.
1137 pp::CompletionCallback callback =
1138 callback_factory_.NewCallback(&Instance::RunCallback,
1139 on_scroll_callback_);
1140 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1141 }
1142
1143 void Instance::ScrollToX(int position) {
1144 if (!h_scrollbar_.get()) {
1145 NOTREACHED();
1146 return;
1147 }
1148 int position_dip = static_cast<int>(position / device_scale_);
1149 h_scrollbar_->SetValue(position_dip);
1150 }
1151
1152 void Instance::ScrollToY(int position) {
1153 if (!v_scrollbar_.get()) {
1154 NOTREACHED();
1155 return;
1156 }
1157 int position_dip = static_cast<int>(position / device_scale_);
1158 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1159 }
1160
1161 void Instance::ScrollToPage(int page) {
1162 if (!v_scrollbar_.get())
1163 return;
1164
1165 if (engine_->GetNumberOfPages() == 0)
1166 return;
1167
1168 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1169 pp::Rect rect = engine_->GetPageRect(index);
1170 // If we are trying to scroll pass the last page,
1171 // scroll to the end of the last page.
1172 int position = index < page ? rect.bottom() : rect.y();
1173 ScrollToY(position * zoom_ * device_scale_);
1174 }
1175
1176 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1177 std::string url_copy(url);
1178
1179 // Empty |url_copy| is ok, and will effectively be a reload.
1180 // Skip the code below so an empty URL does not turn into "http://", which
1181 // will cause GURL to fail a DCHECK.
1182 if (!url_copy.empty()) {
1183 // If |url_copy| starts with '#', then it's for the same URL with a
1184 // different URL fragment.
1185 if (url_copy[0] == '#') {
1186 url_copy = url_ + url_copy;
1187 // Changing the href does not actually do anything when navigating in the
1188 // same tab, so do the actual page scroll here. Then fall through so the
1189 // href gets updated.
1190 if (!open_in_new_tab) {
1191 int page_number = GetInitialPage(url_copy);
1192 if (page_number >= 0)
1193 ScrollToPage(page_number);
1194 }
1195 }
1196 // If there's no scheme, add http.
1197 if (url_copy.find("://") == std::string::npos &&
1198 url_copy.find("mailto:") == std::string::npos) {
1199 url_copy = "http://" + url_copy;
1200 }
1201 // Make sure |url_copy| starts with a valid scheme.
1202 if (url_copy.find("http://") != 0 &&
1203 url_copy.find("https://") != 0 &&
1204 url_copy.find("ftp://") != 0 &&
1205 url_copy.find("file://") != 0 &&
1206 url_copy.find("mailto:") != 0) {
1207 return;
1208 }
1209 // Make sure |url_copy| is not only a scheme.
1210 if (url_copy == "http://" ||
1211 url_copy == "https://" ||
1212 url_copy == "ftp://" ||
1213 url_copy == "file://" ||
1214 url_copy == "mailto:") {
1215 return;
1216 }
1217 }
1218 if (open_in_new_tab) {
1219 GetWindowObject().Call("open", url_copy);
1220 } else {
1221 GetWindowObject().GetProperty("top").GetProperty("location").
1222 SetProperty("href", url_copy);
1223 }
1224 }
1225
1226 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1227 if (cursor == cursor_)
1228 return;
1229 cursor_ = cursor;
1230
1231 const PPB_CursorControl_Dev* cursor_interface =
1232 reinterpret_cast<const PPB_CursorControl_Dev*>(
1233 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1234 if (!cursor_interface) {
1235 NOTREACHED();
1236 return;
1237 }
1238
1239 cursor_interface->SetCursor(
1240 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1241 }
1242
1243 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1244 if (!v_scrollbar_.get())
1245 return;
1246
1247 float inverse_scale = 1.0f / device_scale_;
1248 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1249 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1250 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1251 }
1252
1253 v_scrollbar_->SetTickMarks(
1254 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1255 }
1256
1257 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1258 NumberOfFindResultsChanged(total, final_result);
1259 }
1260
1261 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1262 SelectedFindResultChanged(current_find_index);
1263 }
1264
1265 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1266 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1267 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1268 switch (control_id) {
1269 case kFitToPageButtonId:
1270 UserMetricsRecordAction("PDF.FitToPageButton");
1271 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1272 ZoomChanged(zoom_);
1273 break;
1274 case kFitToWidthButtonId:
1275 UserMetricsRecordAction("PDF.FitToWidthButton");
1276 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1277 ZoomChanged(zoom_);
1278 break;
1279 case kZoomOutButtonId:
1280 case kZoomInButtonId:
1281 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1282 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1283 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1284 ZoomChanged(zoom_);
1285 break;
1286 case kSaveButtonId:
1287 UserMetricsRecordAction("PDF.SaveButton");
1288 SaveAs();
1289 break;
1290 case kPrintButtonId:
1291 UserMetricsRecordAction("PDF.PrintButton");
1292 Print();
1293 break;
1294 }
1295 }
1296 if (control_id == kThumbnailsId &&
1297 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1298 int page = *static_cast<int*>(data);
1299 pp::Rect page_rc(engine_->GetPageRect(page));
1300 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1301 }
1302 }
1303
1304 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1305 paint_manager_.InvalidateRect(rc);
1306 }
1307
1308 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1309 current_timer_id_++;
1310 pp::CompletionCallback callback =
1311 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1312 control_id,
1313 current_timer_id_);
1314 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1315 return current_timer_id_;
1316 }
1317
1318 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1319 // TODO(gene): set event capture here.
1320 }
1321
1322 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1323 UpdateCursor(cursor_type);
1324 }
1325
1326 pp::Instance* Instance::GetInstance() {
1327 return this;
1328 }
1329
1330 void Instance::GetDocumentPassword(
1331 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1332 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1333 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1334 *callback.output() = result.pp_var();
1335 callback.Run(PP_OK);
1336 }
1337
1338 void Instance::Alert(const std::string& message) {
1339 GetWindowObject().Call("alert", message);
1340 }
1341
1342 bool Instance::Confirm(const std::string& message) {
1343 pp::Var result = GetWindowObject().Call("confirm", message);
1344 return result.is_bool() ? result.AsBool() : false;
1345 }
1346
1347 std::string Instance::Prompt(const std::string& question,
1348 const std::string& default_answer) {
1349 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1350 return result.is_string() ? result.AsString() : std::string();
1351 }
1352
1353 std::string Instance::GetURL() {
1354 return url_;
1355 }
1356
1357 void Instance::Email(const std::string& to,
1358 const std::string& cc,
1359 const std::string& bcc,
1360 const std::string& subject,
1361 const std::string& body) {
1362 std::string javascript =
1363 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1364 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1365 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1366 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1367 "&body=" + net::EscapeUrlEncodedData(body, false) +
1368 "';var temp = window.open(href, '_blank', " +
1369 "'width=1,height=1');if(temp) temp.close();";
1370 ExecuteScript(javascript);
1371 }
1372
1373 void Instance::Print() {
1374 if (!printing_enabled_ ||
1375 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1376 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1377 return;
1378 }
1379
1380 pp::CompletionCallback callback =
1381 callback_factory_.NewCallback(&Instance::OnPrint);
1382 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1383 }
1384
1385 void Instance::OnPrint(int32_t) {
1386 pp::PDF::Print(this);
1387 }
1388
1389 void Instance::SaveAs() {
1390 pp::PDF::SaveAs(this);
1391 }
1392
1393 void Instance::SubmitForm(const std::string& url,
1394 const void* data,
1395 int length) {
1396 pp::URLRequestInfo request(this);
1397 request.SetURL(url);
1398 request.SetMethod("POST");
1399 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1400
1401 pp::CompletionCallback callback =
1402 form_factory_.NewCallback(&Instance::FormDidOpen);
1403 form_loader_ = CreateURLLoaderInternal();
1404 int rv = form_loader_.Open(request, callback);
1405 if (rv != PP_OK_COMPLETIONPENDING)
1406 callback.Run(rv);
1407 }
1408
1409 void Instance::FormDidOpen(int32_t result) {
1410 // TODO: inform the user of success/failure.
1411 if (result != PP_OK) {
1412 NOTREACHED();
1413 }
1414 }
1415
1416 std::string Instance::ShowFileSelectionDialog() {
1417 // Seems like very low priority to implement, since the pdf has no way to get
1418 // the file data anyways. Javascript doesn't let you do this synchronously.
1419 NOTREACHED();
1420 return std::string();
1421 }
1422
1423 pp::URLLoader Instance::CreateURLLoader() {
1424 if (full_) {
1425 if (!did_call_start_loading_) {
1426 did_call_start_loading_ = true;
1427 pp::PDF::DidStartLoading(this);
1428 }
1429
1430 // Disable save and print until the document is fully loaded, since they
1431 // would generate an incomplete document. Need to do this each time we
1432 // call DidStartLoading since that resets the content restrictions.
1433 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1434 CONTENT_RESTRICTION_PRINT);
1435 }
1436
1437 return CreateURLLoaderInternal();
1438 }
1439
1440 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1441 pp::CompletionCallback callback =
1442 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1443 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1444 }
1445
1446 void Instance::SearchString(const base::char16* string,
1447 const base::char16* term,
1448 bool case_sensitive,
1449 std::vector<SearchStringResult>* results) {
1450 if (!pp::PDF::IsAvailable()) {
1451 NOTREACHED();
1452 return;
1453 }
1454
1455 PP_PrivateFindResult* pp_results;
1456 int count = 0;
1457 pp::PDF::SearchString(
1458 this,
1459 reinterpret_cast<const unsigned short*>(string),
1460 reinterpret_cast<const unsigned short*>(term),
1461 case_sensitive,
1462 &pp_results,
1463 &count);
1464
1465 results->resize(count);
1466 for (int i = 0; i < count; ++i) {
1467 (*results)[i].start_index = pp_results[i].start_index;
1468 (*results)[i].length = pp_results[i].length;
1469 }
1470
1471 pp::Memory_Dev memory;
1472 memory.MemFree(pp_results);
1473 }
1474
1475 void Instance::DocumentPaintOccurred() {
1476 if (painted_first_page_)
1477 return;
1478
1479 painted_first_page_ = true;
1480 UpdateToolbarPosition(false);
1481 toolbar_->Splash(kToolbarSplashTimeoutMs);
1482
1483 if (engine_->GetNumberOfPages() > 1)
1484 show_page_indicator_ = true;
1485 else
1486 show_page_indicator_ = false;
1487
1488 if (v_scrollbar_.get() && show_page_indicator_) {
1489 page_indicator_.set_current_page(GetPageNumberToDisplay());
1490 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1491 kPageIndicatorInitialFadeTimeoutMs);
1492 }
1493 }
1494
1495 void Instance::DocumentLoadComplete(int page_count) {
1496 // Clear focus state for OSK.
1497 FormTextFieldFocusChange(false);
1498
1499 // Update progress control.
1500 if (progress_bar_.visible())
1501 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1502
1503 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1504 document_load_state_ = LOAD_STATE_COMPLETE;
1505 UserMetricsRecordAction("PDF.LoadSuccess");
1506
1507 if (did_call_start_loading_) {
1508 pp::PDF::DidStopLoading(this);
1509 did_call_start_loading_ = false;
1510 }
1511
1512 if (on_load_callback_.is_string())
1513 ExecuteScript(on_load_callback_);
1514 // Note: If we are in print preview mode on_load_callback_ might call
1515 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1516 // #page=N is not supported in Print Preview.
1517 if (!IsPrintPreview()) {
1518 int initial_page = GetInitialPage(url_);
1519 if (initial_page >= 0)
1520 ScrollToPage(initial_page);
1521 }
1522
1523 if (!full_)
1524 return;
1525 if (!pp::PDF::IsAvailable())
1526 return;
1527
1528 int content_restrictions =
1529 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1530 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1531 content_restrictions |= CONTENT_RESTRICTION_COPY;
1532
1533 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1534 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1535 printing_enabled_ = false;
1536 if (current_tb_info_ == kPDFToolbarButtons) {
1537 // Remove Print button.
1538 CreateToolbar(kPDFNoPrintToolbarButtons,
1539 arraysize(kPDFNoPrintToolbarButtons));
1540 UpdateToolbarPosition(false);
1541 Invalidate(pp::Rect(plugin_size_));
1542 }
1543 }
1544
1545 pp::PDF::SetContentRestriction(this, content_restrictions);
1546
1547 pp::PDF::HistogramPDFPageCount(this, page_count);
1548 }
1549
1550 void Instance::RotateClockwise() {
1551 engine_->RotateClockwise();
1552 }
1553
1554 void Instance::RotateCounterclockwise() {
1555 engine_->RotateCounterclockwise();
1556 }
1557
1558 void Instance::PreviewDocumentLoadComplete() {
1559 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1560 preview_pages_info_.empty()) {
1561 return;
1562 }
1563
1564 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1565
1566 int dest_page_index = preview_pages_info_.front().second;
1567 int src_page_index =
1568 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1569 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1570 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1571
1572 preview_pages_info_.pop();
1573 // |print_preview_page_count_| is not updated yet. Do not load any
1574 // other preview pages till we get this information.
1575 if (print_preview_page_count_ == 0)
1576 return;
1577
1578 if (preview_pages_info_.size())
1579 LoadAvailablePreviewPage();
1580 }
1581
1582 void Instance::DocumentLoadFailed() {
1583 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1584 UserMetricsRecordAction("PDF.LoadFailure");
1585
1586 // Hide progress control.
1587 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1588
1589 if (did_call_start_loading_) {
1590 pp::PDF::DidStopLoading(this);
1591 did_call_start_loading_ = false;
1592 }
1593
1594 document_load_state_ = LOAD_STATE_FAILED;
1595 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1596 }
1597
1598 void Instance::PreviewDocumentLoadFailed() {
1599 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1600 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1601 preview_pages_info_.empty()) {
1602 return;
1603 }
1604
1605 preview_document_load_state_ = LOAD_STATE_FAILED;
1606 preview_pages_info_.pop();
1607
1608 if (preview_pages_info_.size())
1609 LoadAvailablePreviewPage();
1610 }
1611
1612 pp::Instance* Instance::GetPluginInstance() {
1613 return GetInstance();
1614 }
1615
1616 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1617 std::string metric("PDF_Unsupported_");
1618 metric += feature;
1619 if (!unsupported_features_reported_.count(metric)) {
1620 unsupported_features_reported_.insert(metric);
1621 UserMetricsRecordAction(metric);
1622 }
1623
1624 // Since we use an info bar, only do this for full frame plugins..
1625 if (!full_)
1626 return;
1627
1628 if (told_browser_about_unsupported_feature_)
1629 return;
1630 told_browser_about_unsupported_feature_ = true;
1631
1632 pp::PDF::HasUnsupportedFeature(this);
1633 }
1634
1635 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1636 double progress = 0.0;
1637 if (doc_size == 0) {
1638 // Document size is unknown. Use heuristics.
1639 // We'll make progress logarithmic from 0 to 100M.
1640 static const double kFactor = log(100000000.0) / 100.0;
1641 if (available > 0) {
1642 progress = log(static_cast<double>(available)) / kFactor;
1643 if (progress > 100.0)
1644 progress = 100.0;
1645 }
1646 } else {
1647 progress = 100.0 * static_cast<double>(available) / doc_size;
1648 }
1649 progress_bar_.SetProgress(progress);
1650 }
1651
1652 void Instance::FormTextFieldFocusChange(bool in_focus) {
1653 if (!text_input_.get())
1654 return;
1655 if (in_focus)
1656 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1657 else
1658 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1659 }
1660
1661 // Called by PDFScriptableObject.
1662 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1663 std::string method_str = method.AsString();
1664 return (method_str == kJSAccessibility ||
1665 method_str == kJSDocumentLoadComplete ||
1666 method_str == kJSGetHeight ||
1667 method_str == kJSGetHorizontalScrollbarThickness ||
1668 method_str == kJSGetPageLocationNormalized ||
1669 method_str == kJSGetVerticalScrollbarThickness ||
1670 method_str == kJSGetWidth ||
1671 method_str == kJSGetZoomLevel ||
1672 method_str == kJSGoToPage ||
1673 method_str == kJSGrayscale ||
1674 method_str == kJSLoadPreviewPage ||
1675 method_str == kJSOnLoad ||
1676 method_str == kJSOnPluginSizeChanged ||
1677 method_str == kJSOnScroll ||
1678 method_str == kJSPageXOffset ||
1679 method_str == kJSPageYOffset ||
1680 method_str == kJSPrintPreviewPageCount ||
1681 method_str == kJSReload ||
1682 method_str == kJSRemovePrintButton ||
1683 method_str == kJSResetPrintPreviewUrl ||
1684 method_str == kJSSendKeyEvent ||
1685 method_str == kJSSetPageNumbers ||
1686 method_str == kJSSetPageXOffset ||
1687 method_str == kJSSetPageYOffset ||
1688 method_str == kJSSetZoomLevel ||
1689 method_str == kJSZoomFitToHeight ||
1690 method_str == kJSZoomFitToWidth ||
1691 method_str == kJSZoomIn ||
1692 method_str == kJSZoomOut);
1693 }
1694
1695 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1696 const std::vector<pp::Var>& args,
1697 pp::Var* exception) {
1698 std::string method_str = method.AsString();
1699 if (method_str == kJSGrayscale) {
1700 if (args.size() == 1 && args[0].is_bool()) {
1701 engine_->SetGrayscale(args[0].AsBool());
1702 // Redraw
1703 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1704 #ifdef ENABLE_THUMBNAILS
1705 if (thumbnails_.visible())
1706 thumbnails_.Show(true, true);
1707 #endif
1708 return pp::Var(true);
1709 }
1710 return pp::Var(false);
1711 }
1712 if (method_str == kJSOnLoad) {
1713 if (args.size() == 1 && args[0].is_string()) {
1714 on_load_callback_ = args[0];
1715 return pp::Var(true);
1716 }
1717 return pp::Var(false);
1718 }
1719 if (method_str == kJSOnScroll) {
1720 if (args.size() == 1 && args[0].is_string()) {
1721 on_scroll_callback_ = args[0];
1722 return pp::Var(true);
1723 }
1724 return pp::Var(false);
1725 }
1726 if (method_str == kJSOnPluginSizeChanged) {
1727 if (args.size() == 1 && args[0].is_string()) {
1728 on_plugin_size_changed_callback_ = args[0];
1729 return pp::Var(true);
1730 }
1731 return pp::Var(false);
1732 }
1733 if (method_str == kJSReload) {
1734 document_load_state_ = LOAD_STATE_LOADING;
1735 if (!full_)
1736 LoadUrl(url_);
1737 preview_engine_.reset();
1738 print_preview_page_count_ = 0;
1739 engine_.reset(PDFEngine::Create(this));
1740 engine_->New(url_.c_str());
1741 #ifdef ENABLE_THUMBNAILS
1742 thumbnails_.ResetEngine(engine_.get());
1743 #endif
1744 return pp::Var();
1745 }
1746 if (method_str == kJSResetPrintPreviewUrl) {
1747 if (args.size() == 1 && args[0].is_string()) {
1748 url_ = args[0].AsString();
1749 preview_pages_info_ = std::queue<PreviewPageInfo>();
1750 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1751 }
1752 return pp::Var();
1753 }
1754 if (method_str == kJSZoomFitToHeight) {
1755 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1756 return pp::Var();
1757 }
1758 if (method_str == kJSZoomFitToWidth) {
1759 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1760 return pp::Var();
1761 }
1762 if (method_str == kJSZoomIn) {
1763 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1764 return pp::Var();
1765 }
1766 if (method_str == kJSZoomOut) {
1767 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1768 return pp::Var();
1769 }
1770 if (method_str == kJSSetZoomLevel) {
1771 if (args.size() == 1 && args[0].is_number())
1772 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1773 return pp::Var();
1774 }
1775 if (method_str == kJSGetZoomLevel) {
1776 return pp::Var(zoom_);
1777 }
1778 if (method_str == kJSGetHeight) {
1779 return pp::Var(plugin_size_.height());
1780 }
1781 if (method_str == kJSGetWidth) {
1782 return pp::Var(plugin_size_.width());
1783 }
1784 if (method_str == kJSGetHorizontalScrollbarThickness) {
1785 return pp::Var(
1786 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1787 }
1788 if (method_str == kJSGetVerticalScrollbarThickness) {
1789 return pp::Var(
1790 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1791 }
1792 if (method_str == kJSDocumentLoadComplete) {
1793 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1794 }
1795 if (method_str == kJSPageYOffset) {
1796 return pp::Var(static_cast<int32_t>(
1797 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1798 }
1799 if (method_str == kJSSetPageYOffset) {
1800 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1801 ScrollToY(GetScaled(args[0].AsInt()));
1802 return pp::Var();
1803 }
1804 if (method_str == kJSPageXOffset) {
1805 return pp::Var(static_cast<int32_t>(
1806 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1807 }
1808 if (method_str == kJSSetPageXOffset) {
1809 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1810 ScrollToX(GetScaled(args[0].AsInt()));
1811 return pp::Var();
1812 }
1813 if (method_str == kJSRemovePrintButton) {
1814 CreateToolbar(kPrintPreviewToolbarButtons,
1815 arraysize(kPrintPreviewToolbarButtons));
1816 UpdateToolbarPosition(false);
1817 Invalidate(pp::Rect(plugin_size_));
1818 return pp::Var();
1819 }
1820 if (method_str == kJSGoToPage) {
1821 if (args.size() == 1 && args[0].is_string()) {
1822 ScrollToPage(atoi(args[0].AsString().c_str()));
1823 }
1824 return pp::Var();
1825 }
1826 if (method_str == kJSAccessibility) {
1827 if (args.size() == 0) {
1828 base::DictionaryValue node;
1829 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1830 node.SetBoolean(kAccessibleLoaded,
1831 document_load_state_ != LOAD_STATE_LOADING);
1832 bool has_permissions =
1833 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1834 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1835 node.SetBoolean(kAccessibleCopyable, has_permissions);
1836 std::string json;
1837 base::JSONWriter::Write(&node, &json);
1838 return pp::Var(json);
1839 } else if (args[0].is_number()) {
1840 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1841 }
1842 }
1843 if (method_str == kJSPrintPreviewPageCount) {
1844 if (args.size() == 1 && args[0].is_number())
1845 SetPrintPreviewMode(args[0].AsInt());
1846 return pp::Var();
1847 }
1848 if (method_str == kJSLoadPreviewPage) {
1849 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1850 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1851 return pp::Var();
1852 }
1853 if (method_str == kJSGetPageLocationNormalized) {
1854 const size_t kMaxLength = 30;
1855 char location_info[kMaxLength];
1856 int page_idx = engine_->GetMostVisiblePage();
1857 if (page_idx < 0)
1858 return pp::Var(std::string());
1859 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1860 int v_scrollbar_reserved_thickness =
1861 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1862
1863 rect.set_x(rect.x() + ((plugin_size_.width() -
1864 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1865 base::snprintf(location_info,
1866 kMaxLength,
1867 "%0.4f;%0.4f;%0.4f;%0.4f;",
1868 rect.x() / static_cast<float>(plugin_size_.width()),
1869 rect.y() / static_cast<float>(plugin_size_.height()),
1870 rect.width() / static_cast<float>(plugin_size_.width()),
1871 rect.height()/ static_cast<float>(plugin_size_.height()));
1872 return pp::Var(std::string(location_info));
1873 }
1874 if (method_str == kJSSetPageNumbers) {
1875 if (args.size() != 1 || !args[0].is_string())
1876 return pp::Var();
1877 const int num_pages_signed = engine_->GetNumberOfPages();
1878 if (num_pages_signed <= 0)
1879 return pp::Var();
1880 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1881 base::JSONReader::Read(args[0].AsString(), false)));
1882 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1883 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1884 return pp::Var();
1885
1886 std::vector<int> print_preview_page_numbers;
1887 for (size_t index = 0; index < num_pages; ++index) {
1888 int page_number = 0; // |page_number| is 1-based.
1889 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1890 return pp::Var();
1891 print_preview_page_numbers.push_back(page_number);
1892 }
1893 print_preview_page_numbers_ = print_preview_page_numbers;
1894 page_indicator_.set_current_page(GetPageNumberToDisplay());
1895 return pp::Var();
1896 }
1897 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1898 // In JS, creating a synthetic keyboard event and dispatching it always
1899 // result in a keycode of 0.
1900 if (method_str == kJSSendKeyEvent) {
1901 if (args.size() == 1 && args[0].is_number()) {
1902 pp::KeyboardInputEvent event(
1903 this, // instance
1904 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1905 0, // timestamp, not used for kbd events.
1906 0, // no modifiers.
1907 args[0].AsInt(), // keycode.
1908 pp::Var()); // no char text needed.
1909 HandleInputEvent(event);
1910 }
1911 }
1912 return pp::Var();
1913 }
1914
1915 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1916 bool force_no_horizontal_scrollbar = false;
1917 int scrollbar_thickness = GetScrollbarThickness();
1918
1919 if (old_device_scale != device_scale_) {
1920 // Change in device scale forces us to recreate resources
1921 ConfigureNumberImageGenerator();
1922
1923 CreateToolbar(current_tb_info_, current_tb_info_size_);
1924 // Load autoscroll anchor image.
1925 autoscroll_anchor_ =
1926 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1927
1928 ConfigurePageIndicator();
1929 ConfigureProgressBar();
1930
1931 pp::Point scroll_position = engine_->GetScrollPosition();
1932 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1933 engine_->SetScrollPosition(scroll_position);
1934 }
1935
1936 UpdateZoomScale();
1937 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1938 engine_->ZoomUpdated(zoom_ * device_scale_);
1939 if (zoom_ != old_zoom)
1940 ZoomChanged(zoom_);
1941
1942 available_area_ = pp::Rect(plugin_size_);
1943 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1944 CreateVerticalScrollbar();
1945 } else {
1946 DestroyVerticalScrollbar();
1947 }
1948
1949 int v_scrollbar_reserved_thickness =
1950 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1951
1952 if (!force_no_horizontal_scrollbar &&
1953 GetDocumentPixelWidth() >
1954 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1955 CreateHorizontalScrollbar();
1956
1957 // Adding the horizontal scrollbar now might cause us to need vertical
1958 // scrollbars.
1959 if (GetDocumentPixelHeight() >
1960 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1961 CreateVerticalScrollbar();
1962 }
1963
1964 } else {
1965 DestroyHorizontalScrollbar();
1966 }
1967
1968 #ifdef ENABLE_THUMBNAILS
1969 int thumbnails_pos = 0, thumbnails_total = 0;
1970 #endif
1971 if (v_scrollbar_.get()) {
1972 v_scrollbar_->SetScale(device_scale_);
1973 available_area_.set_width(
1974 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
1975
1976 #ifdef ENABLE_THUMBNAILS
1977 int height = plugin_size_.height();
1978 #endif
1979 int height_dip = plugin_dip_size_.height();
1980
1981 #if defined(OS_MACOSX)
1982 // Before Lion, Mac always had the resize at the bottom. After that, it
1983 // never did.
1984 if ((base::mac::IsOSSnowLeopard() && full_) ||
1985 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
1986 #else
1987 if (h_scrollbar_.get()) {
1988 #endif // defined(OS_MACOSX)
1989 #ifdef ENABLE_THUMBNAILS
1990 height -= GetScaled(GetScrollbarThickness());
1991 #endif
1992 height_dip -= GetScrollbarThickness();
1993 }
1994 #ifdef ENABLE_THUMBNAILS
1995 int32 doc_height = GetDocumentPixelHeight();
1996 #endif
1997 int32 doc_height_dip =
1998 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
1999 #if defined(OS_MACOSX)
2000 // On the Mac we always allow room for the resize button (whose width is
2001 // the same as that of the scrollbar) in full mode. However, if there is no
2002 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2003 // end of the document. This is because the scrollbar assumes that its own
2004 // height (in the case of a vscroll bar) is the same as the height of the
2005 // viewport. Since the viewport is actually larger, we compensate by
2006 // adjusting the document height. Similar logic applies below for the
2007 // horizontal scrollbar.
2008 // For example, if the document size is 1000, and the viewport size is 200,
2009 // then the scrollbar position at the end will be 800. In this case the
2010 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2011 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2012 // be 785. Making the document size 985 achieves this.
2013 if (full_ && !h_scrollbar_.get()) {
2014 #ifdef ENABLE_THUMBNAILS
2015 doc_height -= GetScaled(GetScrollbarThickness());
2016 #endif
2017 doc_height_dip -= GetScrollbarThickness();
2018 }
2019 #endif // defined(OS_MACOSX)
2020
2021 int32 position;
2022 position = v_scrollbar_->GetValue();
2023 position = static_cast<int>(position * zoom_ / old_zoom);
2024 valid_v_range_ = doc_height_dip - height_dip;
2025 if (position > valid_v_range_)
2026 position = valid_v_range_;
2027
2028 v_scrollbar_->SetValue(position);
2029
2030 PP_Rect loc;
2031 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2032 if (IsOverlayScrollbar())
2033 loc.point.x -= scrollbar_thickness;
2034 loc.point.y = 0;
2035 loc.size.width = scrollbar_thickness;
2036 loc.size.height = height_dip;
2037 v_scrollbar_->SetLocation(loc);
2038 v_scrollbar_->SetDocumentSize(doc_height_dip);
2039
2040 #ifdef ENABLE_THUMBNAILS
2041 thumbnails_pos = position;
2042 thumbnails_total = doc_height - height;
2043 #endif
2044 }
2045
2046 if (h_scrollbar_.get()) {
2047 h_scrollbar_->SetScale(device_scale_);
2048 available_area_.set_height(
2049 std::max(0, plugin_size_.height() -
2050 GetScaled(GetScrollbarReservedThickness())));
2051
2052 int width_dip = plugin_dip_size_.width();
2053
2054 // See note above.
2055 #if defined(OS_MACOSX)
2056 if ((base::mac::IsOSSnowLeopard() && full_) ||
2057 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2058 #else
2059 if (v_scrollbar_.get()) {
2060 #endif
2061 width_dip -= GetScrollbarThickness();
2062 }
2063 int32 doc_width_dip =
2064 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2065 #if defined(OS_MACOSX)
2066 // See comment in the above if (v_scrollbar_.get()) block.
2067 if (full_ && !v_scrollbar_.get())
2068 doc_width_dip -= GetScrollbarThickness();
2069 #endif // defined(OS_MACOSX)
2070
2071 int32 position;
2072 position = h_scrollbar_->GetValue();
2073 position = static_cast<int>(position * zoom_ / old_zoom);
2074 position = std::min(position, doc_width_dip - width_dip);
2075
2076 h_scrollbar_->SetValue(position);
2077
2078 PP_Rect loc;
2079 loc.point.x = 0;
2080 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2081 if (IsOverlayScrollbar())
2082 loc.point.y -= scrollbar_thickness;
2083 loc.size.width = width_dip;
2084 loc.size.height = scrollbar_thickness;
2085 h_scrollbar_->SetLocation(loc);
2086 h_scrollbar_->SetDocumentSize(doc_width_dip);
2087 }
2088
2089 int doc_width = GetDocumentPixelWidth();
2090 if (doc_width < available_area_.width()) {
2091 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2092 available_area_.set_width(doc_width);
2093 }
2094 int doc_height = GetDocumentPixelHeight();
2095 if (doc_height < available_area_.height()) {
2096 available_area_.set_height(doc_height);
2097 }
2098
2099 // We'll invalidate the entire plugin anyways.
2100 UpdateToolbarPosition(false);
2101 UpdateProgressBarPosition(false);
2102 UpdatePageIndicatorPosition(false);
2103
2104 #ifdef ENABLE_THUMBNAILS
2105 // Update thumbnail control position.
2106 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2107 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2108 GetScaled(kThumbnailsWidth), plugin_size_.height());
2109 if (v_scrollbar_.get())
2110 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2111 if (h_scrollbar_.get())
2112 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2113 thumbnails_.SetRect(thumbnails_rc, false);
2114 #endif
2115
2116 CalculateBackgroundParts();
2117 engine_->PageOffsetUpdated(available_area_.point());
2118 engine_->PluginSizeUpdated(available_area_.size());
2119
2120 if (!document_size_.GetArea())
2121 return;
2122 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2123
2124 // Run the plugin size change callback asynchronously. This function can be
2125 // invoked by a layout change which should not re-enter into JS synchronously.
2126 pp::CompletionCallback callback =
2127 callback_factory_.NewCallback(&Instance::RunCallback,
2128 on_plugin_size_changed_callback_);
2129 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2130 }
2131
2132 void Instance::RunCallback(int32_t, pp::Var callback) {
2133 if (callback.is_string())
2134 ExecuteScript(callback);
2135 }
2136
2137 void Instance::CreateHorizontalScrollbar() {
2138 if (h_scrollbar_.get())
2139 return;
2140
2141 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2142 }
2143
2144 void Instance::CreateVerticalScrollbar() {
2145 if (v_scrollbar_.get())
2146 return;
2147
2148 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2149 }
2150
2151 void Instance::DestroyHorizontalScrollbar() {
2152 if (!h_scrollbar_.get())
2153 return;
2154 if (h_scrollbar_->GetValue())
2155 engine_->ScrolledToXPosition(0);
2156 h_scrollbar_.reset();
2157 }
2158
2159 void Instance::DestroyVerticalScrollbar() {
2160 if (!v_scrollbar_.get())
2161 return;
2162 if (v_scrollbar_->GetValue())
2163 engine_->ScrolledToYPosition(0);
2164 v_scrollbar_.reset();
2165 page_indicator_.Show(false, true);
2166 }
2167
2168 int Instance::GetScrollbarThickness() {
2169 if (scrollbar_thickness_ == -1) {
2170 pp::Scrollbar_Dev temp_scrollbar(this, false);
2171 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2172 scrollbar_reserved_thickness_ =
2173 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2174 }
2175
2176 return scrollbar_thickness_;
2177 }
2178
2179 int Instance::GetScrollbarReservedThickness() {
2180 GetScrollbarThickness();
2181 return scrollbar_reserved_thickness_;
2182 }
2183
2184 bool Instance::IsOverlayScrollbar() {
2185 return GetScrollbarReservedThickness() == 0;
2186 }
2187
2188 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2189 toolbar_.reset(new FadingControls());
2190
2191 DCHECK(tb_info);
2192 DCHECK(size >= 0);
2193
2194 // Remember the current toolbar information in case we need to recreate the
2195 // images later.
2196 current_tb_info_ = tb_info;
2197 current_tb_info_size_ = size;
2198
2199 int max_height = 0;
2200 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2201 ScalePoint(device_scale_, &origin);
2202
2203 std::list<Button*> buttons;
2204 for (size_t i = 0; i < size; i++) {
2205 Button* btn = new Button;
2206 pp::ImageData normal_face =
2207 CreateResourceImage(tb_info[i].normal);
2208 btn->CreateButton(tb_info[i].id,
2209 origin,
2210 true,
2211 toolbar_.get(),
2212 tb_info[i].style,
2213 normal_face,
2214 CreateResourceImage(tb_info[i].highlighted),
2215 CreateResourceImage(tb_info[i].pressed));
2216 buttons.push_back(btn);
2217
2218 origin += pp::Point(normal_face.size().width(), 0);
2219 max_height = std::max(max_height, normal_face.size().height());
2220 }
2221
2222 pp::Rect rc_toolbar(0, 0,
2223 origin.x() + GetToolbarRightOffset(),
2224 origin.y() + max_height + GetToolbarBottomOffset());
2225 toolbar_->CreateFadingControls(
2226 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2227
2228 std::list<Button*>::iterator iter;
2229 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2230 toolbar_->AddControl(*iter);
2231 }
2232 }
2233
2234 int Instance::GetToolbarRightOffset() {
2235 int scrollbar_thickness = GetScrollbarThickness();
2236 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2237 }
2238
2239 int Instance::GetToolbarBottomOffset() {
2240 int scrollbar_thickness = GetScrollbarThickness();
2241 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2242 }
2243
2244 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2245 std::vector<pp::ImageData> num_images(10);
2246 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2247 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2248 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2249 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2250 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2251 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2252 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2253 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2254 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2255 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2256 return num_images;
2257 }
2258
2259 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2260 pp::ImageData* background) {
2261 std::vector<pp::ImageData> result(9);
2262 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2263 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2264 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2265 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2266 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2267 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2268 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2269 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2270 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2271 *background = CreateResourceImage(
2272 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2273 return result;
2274 }
2275
2276 void Instance::CreatePageIndicator(bool always_visible) {
2277 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2278 number_image_generator(), always_visible);
2279 ConfigurePageIndicator();
2280 }
2281
2282 void Instance::ConfigurePageIndicator() {
2283 pp::ImageData background =
2284 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2285 page_indicator_.Configure(pp::Point(), background);
2286 }
2287
2288 void Instance::CreateProgressBar() {
2289 pp::ImageData background;
2290 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2291 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2292 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2293 device_scale_, images, background, text);
2294 }
2295
2296 void Instance::ConfigureProgressBar() {
2297 pp::ImageData background;
2298 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2299 progress_bar_.Reconfigure(background, images, device_scale_);
2300 }
2301
2302 void Instance::CreateThumbnails() {
2303 thumbnails_.CreateThumbnailControl(
2304 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2305 number_image_generator());
2306 }
2307
2308 void Instance::LoadUrl(const std::string& url) {
2309 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2310 }
2311
2312 void Instance::LoadPreviewUrl(const std::string& url) {
2313 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2314 }
2315
2316 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2317 void (Instance::* method)(int32_t)) {
2318 pp::URLRequestInfo request(this);
2319 request.SetURL(url);
2320 request.SetMethod("GET");
2321
2322 *loader = CreateURLLoaderInternal();
2323 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2324 int rv = loader->Open(request, callback);
2325 if (rv != PP_OK_COMPLETIONPENDING)
2326 callback.Run(rv);
2327 }
2328
2329 pp::URLLoader Instance::CreateURLLoaderInternal() {
2330 pp::URLLoader loader(this);
2331
2332 const PPB_URLLoaderTrusted* trusted_interface =
2333 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2334 pp::Module::Get()->GetBrowserInterface(
2335 PPB_URLLOADERTRUSTED_INTERFACE));
2336 if (trusted_interface)
2337 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2338 return loader;
2339 }
2340
2341 int Instance::GetInitialPage(const std::string& url) {
2342 size_t found_idx = url.find('#');
2343 if (found_idx == std::string::npos)
2344 return -1;
2345
2346 const std::string& ref = url.substr(found_idx + 1);
2347 std::vector<std::string> fragments;
2348 Tokenize(ref, kDelimiters, &fragments);
2349
2350 // Page number to return, zero-based.
2351 int page = -1;
2352
2353 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2354 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2355 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2356 return engine_->GetNamedDestinationPage(fragments[0]);
2357
2358 for (size_t i = 0; i < fragments.size(); ++i) {
2359 std::vector<std::string> key_value;
2360 base::SplitString(fragments[i], '=', &key_value);
2361 if (key_value.size() != 2)
2362 continue;
2363 const std::string& key = key_value[0];
2364 const std::string& value = key_value[1];
2365
2366 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2367 // |page_value| is 1-based.
2368 int page_value = -1;
2369 if (base::StringToInt(value, &page_value) && page_value > 0)
2370 page = page_value - 1;
2371 continue;
2372 }
2373 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2374 // |page_value| is 0-based.
2375 int page_value = engine_->GetNamedDestinationPage(value);
2376 if (page_value >= 0)
2377 page = page_value;
2378 continue;
2379 }
2380 }
2381 return page;
2382 }
2383
2384 void Instance::UpdateToolbarPosition(bool invalidate) {
2385 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2386 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2387 GetScaled(kToolbarFadingOffsetLeft);
2388 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2389 GetScaled(kToolbarFadingOffsetBottom);
2390
2391 // Update toolbar position
2392 if (plugin_size_.width() < min_toolbar_width ||
2393 plugin_size_.height() < min_toolbar_height) {
2394 // Disable toolbar if it does not fit on the screen.
2395 toolbar_->Show(false, invalidate);
2396 } else {
2397 pp::Point offset(
2398 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2399 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2400 toolbar_->MoveBy(offset, invalidate);
2401
2402 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2403 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2404 toolbar_->Show(painted_first_page_, invalidate);
2405 }
2406 }
2407
2408 void Instance::UpdateProgressBarPosition(bool invalidate) {
2409 // TODO(gene): verify we don't overlap with toolbar.
2410 int scrollbar_thickness = GetScrollbarThickness();
2411 pp::Point progress_origin(
2412 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2413 plugin_size_.height() - progress_bar_.rect().height() -
2414 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2415 progress_bar_.MoveTo(progress_origin, invalidate);
2416 }
2417
2418 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2419 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2420 pp::Point origin(
2421 plugin_size_.width() - page_indicator_.rect().width() -
2422 GetScaled(GetScrollbarReservedThickness()),
2423 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2424 doc_height, plugin_size_.height()));
2425 page_indicator_.MoveTo(origin, invalidate);
2426 }
2427
2428 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2429 double old_zoom = zoom_;
2430
2431 zoom_mode_ = zoom_mode;
2432 if (zoom_mode_ == ZOOM_SCALE)
2433 zoom_ = scale;
2434 UpdateZoomScale();
2435
2436 engine_->ZoomUpdated(zoom_ * device_scale_);
2437 OnGeometryChanged(old_zoom, device_scale_);
2438
2439 // If fit-to-height, snap to the beginning of the most visible page.
2440 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2441 ScrollToPage(engine_->GetMostVisiblePage());
2442 }
2443
2444 // Update sticky buttons to the current zoom style.
2445 Button* ftp_btn = static_cast<Button*>(
2446 toolbar_->GetControl(kFitToPageButtonId));
2447 Button* ftw_btn = static_cast<Button*>(
2448 toolbar_->GetControl(kFitToWidthButtonId));
2449 switch (zoom_mode_) {
2450 case ZOOM_FIT_TO_PAGE:
2451 ftp_btn->SetPressedState(true);
2452 ftw_btn->SetPressedState(false);
2453 break;
2454 case ZOOM_FIT_TO_WIDTH:
2455 ftw_btn->SetPressedState(true);
2456 ftp_btn->SetPressedState(false);
2457 break;
2458 default:
2459 ftw_btn->SetPressedState(false);
2460 ftp_btn->SetPressedState(false);
2461 }
2462 }
2463
2464 void Instance::UpdateZoomScale() {
2465 switch (zoom_mode_) {
2466 case ZOOM_SCALE:
2467 break; // Keep current scale.
2468 case ZOOM_FIT_TO_PAGE: {
2469 int page_num = engine_->GetFirstVisiblePage();
2470 if (page_num == -1)
2471 break;
2472 pp::Rect rc = engine_->GetPageRect(page_num);
2473 if (!rc.height())
2474 break;
2475 // Calculate fit to width zoom level.
2476 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2477 GetScrollbarReservedThickness()) / document_size_.width();
2478 // Calculate fit to height zoom level. If document will not fit
2479 // horizontally, adjust zoom level to allow space for horizontal
2480 // scrollbar.
2481 double fth_zoom =
2482 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2483 if (fth_zoom * document_size_.width() >
2484 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2485 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2486 - GetScrollbarReservedThickness()) / rc.height();
2487 zoom_ = std::min(ftw_zoom, fth_zoom);
2488 } break;
2489 case ZOOM_FIT_TO_WIDTH:
2490 case ZOOM_AUTO:
2491 if (!document_size_.width())
2492 break;
2493 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2494 GetScrollbarReservedThickness()) / document_size_.width();
2495 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2496 zoom_ = 1.0;
2497 break;
2498 }
2499 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2500 }
2501
2502 double Instance::CalculateZoom(uint32 control_id) const {
2503 if (control_id == kZoomInButtonId) {
2504 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2505 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2506 if (current_zoom - content::kEpsilon > zoom_)
2507 return current_zoom;
2508 }
2509 } else {
2510 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2511 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2512 if (current_zoom + content::kEpsilon < zoom_)
2513 return current_zoom;
2514 }
2515 }
2516 return zoom_;
2517 }
2518
2519 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2520 pp::ImageData resource_data;
2521 if (hidpi_enabled_) {
2522 resource_data =
2523 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2524 }
2525
2526 return resource_data.data() ? resource_data
2527 : pp::PDF::GetResourceImage(this, image_id);
2528 }
2529
2530 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2531 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2532 if (!rv.is_string())
2533 return std::string();
2534
2535 return rv.AsString();
2536 }
2537
2538 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2539 std::string str(GetLocalizedString(id));
2540
2541 pp::FontDescription_Dev description;
2542 description.set_family(PP_FONTFAMILY_SANSSERIF);
2543 description.set_size(kMessageTextSize * device_scale_);
2544 pp::Font_Dev font(this, description);
2545 int length = font.MeasureSimpleText(str);
2546 pp::Point point(top_center);
2547 point.set_x(point.x() - length / 2);
2548 DCHECK(!image_data_.is_null());
2549 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2550 }
2551
2552 void Instance::SetPrintPreviewMode(int page_count) {
2553 if (!IsPrintPreview() || page_count <= 0) {
2554 print_preview_page_count_ = 0;
2555 return;
2556 }
2557
2558 print_preview_page_count_ = page_count;
2559 ScrollToPage(0);
2560 engine_->AppendBlankPages(print_preview_page_count_);
2561 if (preview_pages_info_.size() > 0)
2562 LoadAvailablePreviewPage();
2563 }
2564
2565 bool Instance::IsPrintPreview() {
2566 return IsPrintPreviewUrl(url_);
2567 }
2568
2569 int Instance::GetPageNumberToDisplay() {
2570 int page = engine_->GetMostVisiblePage();
2571 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2572 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2573 return print_preview_page_numbers_[page];
2574 }
2575 return page + 1;
2576 }
2577
2578 void Instance::ProcessPreviewPageInfo(const std::string& url,
2579 int dst_page_index) {
2580 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2581 return;
2582
2583 int src_page_index = ExtractPrintPreviewPageIndex(url);
2584 if (src_page_index < 1)
2585 return;
2586
2587 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2588 LoadAvailablePreviewPage();
2589 }
2590
2591 void Instance::LoadAvailablePreviewPage() {
2592 if (preview_pages_info_.size() <= 0)
2593 return;
2594
2595 std::string url = preview_pages_info_.front().first;
2596 int dst_page_index = preview_pages_info_.front().second;
2597 int src_page_index = ExtractPrintPreviewPageIndex(url);
2598 if (src_page_index < 1 ||
2599 dst_page_index >= print_preview_page_count_ ||
2600 preview_document_load_state_ == LOAD_STATE_LOADING) {
2601 return;
2602 }
2603
2604 preview_document_load_state_ = LOAD_STATE_LOADING;
2605 LoadPreviewUrl(url);
2606 }
2607
2608 void Instance::EnableAutoscroll(const pp::Point& origin) {
2609 if (is_autoscroll_)
2610 return;
2611
2612 pp::Size client_size = plugin_size_;
2613 if (v_scrollbar_.get())
2614 client_size.Enlarge(-GetScrollbarThickness(), 0);
2615 if (h_scrollbar_.get())
2616 client_size.Enlarge(0, -GetScrollbarThickness());
2617
2618 // Do not allow autoscroll if client area is too small.
2619 if (autoscroll_anchor_.size().width() > client_size.width() ||
2620 autoscroll_anchor_.size().height() > client_size.height())
2621 return;
2622
2623 autoscroll_rect_ = pp::Rect(
2624 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2625 origin.y() - autoscroll_anchor_.size().height() / 2),
2626 autoscroll_anchor_.size());
2627
2628 // Make sure autoscroll anchor is in the client area.
2629 if (autoscroll_rect_.right() > client_size.width()) {
2630 autoscroll_rect_.set_x(
2631 client_size.width() - autoscroll_anchor_.size().width());
2632 }
2633 if (autoscroll_rect_.bottom() > client_size.height()) {
2634 autoscroll_rect_.set_y(
2635 client_size.height() - autoscroll_anchor_.size().height());
2636 }
2637
2638 if (autoscroll_rect_.x() < 0)
2639 autoscroll_rect_.set_x(0);
2640 if (autoscroll_rect_.y() < 0)
2641 autoscroll_rect_.set_y(0);
2642
2643 is_autoscroll_ = true;
2644 Invalidate(kAutoScrollId, autoscroll_rect_);
2645
2646 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2647 }
2648
2649 void Instance::DisableAutoscroll() {
2650 if (is_autoscroll_) {
2651 is_autoscroll_ = false;
2652 Invalidate(kAutoScrollId, autoscroll_rect_);
2653 }
2654 }
2655
2656 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2657 // Scroll only if mouse pointer is outside of the anchor area.
2658 if (autoscroll_rect_.Contains(mouse_pos)) {
2659 autoscroll_x_ = 0;
2660 autoscroll_y_ = 0;
2661 return PP_CURSORTYPE_MIDDLEPANNING;
2662 }
2663
2664 // Relative position to the center of anchor area.
2665 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2666
2667 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2668 double angle = atan2(static_cast<double>(rel_pos.y()),
2669 static_cast<double>(rel_pos.x()));
2670
2671 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2672 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2673
2674 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2675 // so negative angle represent north direction.
2676 if (angle < - (M_PI * 7.0 / 8.0)) {
2677 // going west
2678 return PP_CURSORTYPE_WESTPANNING;
2679 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2680 // going north-west
2681 return PP_CURSORTYPE_NORTHWESTPANNING;
2682 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2683 // going north.
2684 return PP_CURSORTYPE_NORTHPANNING;
2685 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2686 // going north-east
2687 return PP_CURSORTYPE_NORTHEASTPANNING;
2688 } else if (angle < M_PI * 1.0 / 8.0) {
2689 // going east.
2690 return PP_CURSORTYPE_EASTPANNING;
2691 } else if (angle < M_PI * 3.0 / 8.0) {
2692 // going south-east
2693 return PP_CURSORTYPE_SOUTHEASTPANNING;
2694 } else if (angle < M_PI * 5.0 / 8.0) {
2695 // going south.
2696 return PP_CURSORTYPE_SOUTHPANNING;
2697 } else if (angle < M_PI * 7.0 / 8.0) {
2698 // going south-west
2699 return PP_CURSORTYPE_SOUTHWESTPANNING;
2700 }
2701
2702 // went around the circle, going west again
2703 return PP_CURSORTYPE_WESTPANNING;
2704 }
2705
2706 void Instance::ConfigureNumberImageGenerator() {
2707 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2708 pp::ImageData number_background = CreateResourceImage(
2709 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2710 number_image_generator_->Configure(number_background,
2711 num_images,
2712 device_scale_);
2713 }
2714
2715 NumberImageGenerator* Instance::number_image_generator() {
2716 if (!number_image_generator_.get()) {
2717 number_image_generator_.reset(new NumberImageGenerator(this));
2718 ConfigureNumberImageGenerator();
2719 }
2720 return number_image_generator_.get();
2721 }
2722
2723 int Instance::GetScaled(int x) const {
2724 return static_cast<int>(x * device_scale_);
2725 }
2726
2727 void Instance::UserMetricsRecordAction(const std::string& action) {
2728 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2729 }
2730
2731 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2732 : instance_(instance) {
2733 }
2734
2735 PDFScriptableObject::~PDFScriptableObject() {
2736 }
2737
2738 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2739 return instance_->HasScriptableMethod(name, exception);
2740 }
2741
2742 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2743 const std::vector<pp::Var>& args,
2744 pp::Var* exception) {
2745 return instance_->CallScriptableMethod(method, args, exception);
2746 }
2747
2748 } // namespace chrome_pdf