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Cleanup various includes and namespace references.
[chromium-blink-merge.git] / pdf / instance.cc
blob6417d7870211ed9cd38ce88d957fcb374f7b0d2c
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "pdf/instance.h"
6
7 #include <algorithm> // for min()
8 #define _USE_MATH_DEFINES // for M_PI
9 #include <cmath> // for log() and pow()
10 #include <math.h>
11 #include <list>
12
13 #include "base/json/json_reader.h"
14 #include "base/json/json_writer.h"
15 #include "base/logging.h"
16 #include "base/strings/string_number_conversions.h"
17 #include "base/strings/string_split.h"
18 #include "base/strings/string_util.h"
19 #include "base/values.h"
20 #include "chrome/browser/chrome_page_zoom_constants.h"
21 #include "chrome/common/content_restriction.h"
22 #include "content/public/common/page_zoom.h"
23 #include "net/base/escape.h"
24 #include "pdf/draw_utils.h"
25 #include "pdf/number_image_generator.h"
26 #include "pdf/pdf.h"
27 #include "pdf/resource_consts.h"
28 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
29 #include "ppapi/c/pp_errors.h"
30 #include "ppapi/c/pp_rect.h"
31 #include "ppapi/c/private/ppp_pdf.h"
32 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
33 #include "ppapi/cpp/core.h"
34 #include "ppapi/cpp/dev/font_dev.h"
35 #include "ppapi/cpp/dev/memory_dev.h"
36 #include "ppapi/cpp/dev/text_input_dev.h"
37 #include "ppapi/cpp/module.h"
38 #include "ppapi/cpp/point.h"
39 #include "ppapi/cpp/private/pdf.h"
40 #include "ppapi/cpp/rect.h"
41 #include "ppapi/cpp/resource.h"
42 #include "ppapi/cpp/url_request_info.h"
43 #include "ui/events/keycodes/keyboard_codes.h"
44
45 #if defined(OS_MACOSX)
46 #include "base/mac/mac_util.h"
47 #endif
48
49 namespace chrome_pdf {
50
51 struct ToolbarButtonInfo {
52 uint32 id;
53 Button::ButtonStyle style;
54 PP_ResourceImage normal;
55 PP_ResourceImage highlighted;
56 PP_ResourceImage pressed;
57 };
58
59 namespace {
60
61 // Uncomment following #define to enable thumbnails.
62 // #define ENABLE_THUMBNAILS
63
64 const uint32 kToolbarSplashTimeoutMs = 6000;
65 const uint32 kMessageTextColor = 0xFF575757;
66 const uint32 kMessageTextSize = 22;
67 const uint32 kProgressFadeTimeoutMs = 250;
68 const uint32 kProgressDelayTimeoutMs = 1000;
69 const uint32 kAutoScrollTimeoutMs = 50;
70 const double kAutoScrollFactor = 0.2;
71
72 // Javascript methods.
73 const char kJSAccessibility[] = "accessibility";
74 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
75 const char kJSGetHeight[] = "getHeight";
76 const char kJSGetHorizontalScrollbarThickness[] =
77 "getHorizontalScrollbarThickness";
78 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
79 const char kJSGetSelectedText[] = "getSelectedText";
80 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
81 const char kJSGetWidth[] = "getWidth";
82 const char kJSGetZoomLevel[] = "getZoomLevel";
83 const char kJSGoToPage[] = "goToPage";
84 const char kJSGrayscale[] = "grayscale";
85 const char kJSLoadPreviewPage[] = "loadPreviewPage";
86 const char kJSOnLoad[] = "onload";
87 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
88 const char kJSOnScroll[] = "onScroll";
89 const char kJSPageXOffset[] = "pageXOffset";
90 const char kJSPageYOffset[] = "pageYOffset";
91 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
92 const char kJSReload[] = "reload";
93 const char kJSRemovePrintButton[] = "removePrintButton";
94 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
95 const char kJSSendKeyEvent[] = "sendKeyEvent";
96 const char kJSSetPageNumbers[] = "setPageNumbers";
97 const char kJSSetPageXOffset[] = "setPageXOffset";
98 const char kJSSetPageYOffset[] = "setPageYOffset";
99 const char kJSSetZoomLevel[] = "setZoomLevel";
100 const char kJSZoomFitToHeight[] = "fitToHeight";
101 const char kJSZoomFitToWidth[] = "fitToWidth";
102 const char kJSZoomIn[] = "zoomIn";
103 const char kJSZoomOut[] = "zoomOut";
104
105 // URL reference parameters.
106 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
107 // document from Adobe.
108 const char kDelimiters[] = "#&";
109 const char kNamedDest[] = "nameddest";
110 const char kPage[] = "page";
111
112 const char kChromePrint[] = "chrome://print/";
113
114 // Dictionary Value key names for the document accessibility info
115 const char kAccessibleNumberOfPages[] = "numberOfPages";
116 const char kAccessibleLoaded[] = "loaded";
117 const char kAccessibleCopyable[] = "copyable";
118
119 const ToolbarButtonInfo kPDFToolbarButtons[] = {
120 { kFitToPageButtonId, Button::BUTTON_STATE,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
124 { kFitToWidthButtonId, Button::BUTTON_STATE,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
128 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
132 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
136 { kSaveButtonId, Button::BUTTON_CLICKABLE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
140 { kPrintButtonId, Button::BUTTON_CLICKABLE,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
144 };
145
146 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
147 { kFitToPageButtonId, Button::BUTTON_STATE,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
151 { kFitToWidthButtonId, Button::BUTTON_STATE,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
155 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
159 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
163 { kSaveButtonId, Button::BUTTON_CLICKABLE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
167 { kPrintButtonId, Button::BUTTON_CLICKABLE,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
171 };
172
173 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
174 { kFitToPageButtonId, Button::BUTTON_STATE,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
178 { kFitToWidthButtonId, Button::BUTTON_STATE,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
182 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
186 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
190 };
191
192 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
193
194 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
195 pp::Var var;
196 void* object =
197 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
198 if (object)
199 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
200 return var.Detach();
201 }
202
203 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
204 void* object =
205 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
206 if (object) {
207 Instance* obj_instance = static_cast<Instance*>(object);
208 switch (type) {
209 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
210 obj_instance->RotateClockwise();
211 break;
212 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
213 obj_instance->RotateCounterclockwise();
214 break;
215 }
216 }
217 }
218
219 const PPP_Pdf ppp_private = {
220 &GetLinkAtPosition,
221 &Transform
222 };
223
224 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
225 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
226 std::vector<std::string> url_substr;
227 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
228 if (url_substr.size() != 3)
229 return -1;
230
231 if (url_substr[2] != "print.pdf")
232 return -1;
233
234 int page_index = 0;
235 if (!base::StringToInt(url_substr[1], &page_index))
236 return -1;
237 return page_index;
238 }
239
240 bool IsPrintPreviewUrl(const std::string& url) {
241 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
242 }
243
244 void ScalePoint(float scale, pp::Point* point) {
245 point->set_x(static_cast<int>(point->x() * scale));
246 point->set_y(static_cast<int>(point->y() * scale));
247 }
248
249 void ScaleRect(float scale, pp::Rect* rect) {
250 int left = static_cast<int>(floorf(rect->x() * scale));
251 int top = static_cast<int>(floorf(rect->y() * scale));
252 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
253 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
254 rect->SetRect(left, top, right - left, bottom - top);
255 }
256
257 template<class T>
258 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
259 DCHECK(lower_boundary <= upper_boundary);
260 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
261 }
262
263 } // namespace
264
265 Instance::Instance(PP_Instance instance)
266 : pp::InstancePrivate(instance),
267 pp::Find_Private(this),
268 pp::Printing_Dev(this),
269 pp::Selection_Dev(this),
270 pp::WidgetClient_Dev(this),
271 pp::Zoom_Dev(this),
272 cursor_(PP_CURSORTYPE_POINTER),
273 timer_pending_(false),
274 current_timer_id_(0),
275 zoom_(1.0),
276 device_scale_(1.0),
277 printing_enabled_(true),
278 hidpi_enabled_(false),
279 full_(IsFullFrame()),
280 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
281 did_call_start_loading_(false),
282 is_autoscroll_(false),
283 scrollbar_thickness_(-1),
284 scrollbar_reserved_thickness_(-1),
285 current_tb_info_(NULL),
286 current_tb_info_size_(0),
287 paint_manager_(this, this, true),
288 delayed_progress_timer_id_(0),
289 first_paint_(true),
290 painted_first_page_(false),
291 show_page_indicator_(false),
292 document_load_state_(LOAD_STATE_LOADING),
293 preview_document_load_state_(LOAD_STATE_COMPLETE),
294 told_browser_about_unsupported_feature_(false),
295 print_preview_page_count_(0) {
296 loader_factory_.Initialize(this);
297 timer_factory_.Initialize(this);
298 form_factory_.Initialize(this);
299 callback_factory_.Initialize(this);
300 engine_.reset(PDFEngine::Create(this));
301 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
302 AddPerInstanceObject(kPPPPdfInterface, this);
303
304 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
305 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
306 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
307 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
308 }
309
310 Instance::~Instance() {
311 if (timer_pending_) {
312 timer_factory_.CancelAll();
313 timer_pending_ = false;
314 }
315 // The engine may try to access this instance during its destruction.
316 // Make sure this happens early while the instance is still intact.
317 engine_.reset();
318 RemovePerInstanceObject(kPPPPdfInterface, this);
319 }
320
321 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
322 // For now, we hide HiDPI support behind a flag.
323 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
324 hidpi_enabled_ = true;
325
326 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
327 if (printing_enabled_) {
328 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
329 } else {
330 CreateToolbar(kPDFNoPrintToolbarButtons,
331 arraysize(kPDFNoPrintToolbarButtons));
332 }
333
334 CreateProgressBar();
335
336 // Load autoscroll anchor image.
337 autoscroll_anchor_ =
338 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
339
340 #ifdef ENABLE_THUMBNAILS
341 CreateThumbnails();
342 #endif
343 const char* url = NULL;
344 for (uint32_t i = 0; i < argc; ++i) {
345 if (strcmp(argn[i], "src") == 0) {
346 url = argv[i];
347 break;
348 }
349 }
350
351 if (!url)
352 return false;
353
354 CreatePageIndicator(IsPrintPreviewUrl(url));
355
356 if (!full_) {
357 // For PDFs embedded in a frame, we don't get the data automatically like we
358 // do for full-frame loads. Start loading the data manually.
359 LoadUrl(url);
360 } else {
361 DCHECK(!did_call_start_loading_);
362 pp::PDF::DidStartLoading(this);
363 did_call_start_loading_ = true;
364 }
365
366 ZoomLimitsChanged(kMinZoom, kMaxZoom);
367
368 text_input_.reset(new pp::TextInput_Dev(this));
369
370 url_ = url;
371 return engine_->New(url);
372 }
373
374 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
375 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
376 kProgressDelayTimeoutMs);
377 return engine_->HandleDocumentLoad(loader);
378 }
379
380 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
381 // To simplify things, convert the event into device coordinates if it is
382 // a mouse event.
383 pp::InputEvent event_device_res(event);
384 {
385 pp::MouseInputEvent mouse_event(event);
386 if (!mouse_event.is_null()) {
387 pp::Point point = mouse_event.GetPosition();
388 pp::Point movement = mouse_event.GetMovement();
389 ScalePoint(device_scale_, &point);
390 ScalePoint(device_scale_, &movement);
391 mouse_event = pp::MouseInputEvent(
392 this,
393 event.GetType(),
394 event.GetTimeStamp(),
395 event.GetModifiers(),
396 mouse_event.GetButton(),
397 point,
398 mouse_event.GetClickCount(),
399 movement);
400 event_device_res = mouse_event;
401 }
402 }
403
404 // Check if we need to go to autoscroll mode.
405 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
406 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
407 pp::MouseInputEvent mouse_event(event_device_res);
408 pp::Point pos = mouse_event.GetPosition();
409 EnableAutoscroll(pos);
410 UpdateCursor(CalculateAutoscroll(pos));
411 return true;
412 } else {
413 // Quit autoscrolling on any other event.
414 DisableAutoscroll();
415 }
416
417 #ifdef ENABLE_THUMBNAILS
418 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
419 thumbnails_.SlideOut();
420
421 if (thumbnails_.HandleEvent(event_device_res))
422 return true;
423 #endif
424
425 if (toolbar_->HandleEvent(event_device_res))
426 return true;
427
428 #ifdef ENABLE_THUMBNAILS
429 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
430 pp::MouseInputEvent mouse_event(event);
431 pp::Point pt = mouse_event.GetPosition();
432 pp::Rect v_scrollbar_rc;
433 v_scrollbar_->GetLocation(&v_scrollbar_rc);
434 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
435 // in the webkit that makes event.u.mouse.button
436 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
437 // To work around this issue we use modifier for now, and will switch
438 // to button once the bug is fixed and webkit got merged back to our tree.
439 if (v_scrollbar_rc.Contains(pt) &&
440 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
441 thumbnails_.SlideIn();
442 }
443
444 // When scrollbar is in the scrolling mode we should display thumbnails
445 // even the mouse is outside the thumbnail and scrollbar areas.
446 // If mouse is outside plugin area, we are still getting mouse move events
447 // while scrolling. See bug description for details:
448 // http://code.google.com/p/chromium/issues/detail?id=56444
449 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
450 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
451 !thumbnails_.rect().Contains(pt)) {
452 thumbnails_.SlideOut();
453 }
454 }
455 #endif
456
457 // Need to pass the event to the engine first, since if we're over an edit
458 // control we want it to get keyboard events (like space) instead of the
459 // scrollbar.
460 // TODO: will have to offset the mouse coordinates once we support bidi and
461 // there could be scrollbars on the left.
462 pp::InputEvent offset_event(event_device_res);
463 bool try_engine_first = true;
464 switch (offset_event.GetType()) {
465 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
466 case PP_INPUTEVENT_TYPE_MOUSEUP:
467 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
468 case PP_INPUTEVENT_TYPE_MOUSEENTER:
469 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
470 pp::MouseInputEvent mouse_event(event_device_res);
471 pp::MouseInputEvent mouse_event_dip(event);
472 pp::Point point = mouse_event.GetPosition();
473 point.set_x(point.x() - available_area_.x());
474 offset_event = pp::MouseInputEvent(
475 this,
476 event.GetType(),
477 event.GetTimeStamp(),
478 event.GetModifiers(),
479 mouse_event.GetButton(),
480 point,
481 mouse_event.GetClickCount(),
482 mouse_event.GetMovement());
483 if (!engine_->IsSelecting()) {
484 if (!IsOverlayScrollbar() &&
485 !available_area_.Contains(mouse_event.GetPosition())) {
486 try_engine_first = false;
487 } else if (IsOverlayScrollbar()) {
488 pp::Rect temp;
489 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
490 temp.Contains(mouse_event_dip.GetPosition())) ||
491 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
492 temp.Contains(mouse_event_dip.GetPosition()))) {
493 try_engine_first = false;
494 }
495 }
496 }
497 break;
498 }
499 default:
500 break;
501 }
502 if (try_engine_first && engine_->HandleEvent(offset_event))
503 return true;
504
505 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
506 // there is no horizontal scroll bar.
507 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
508 // Prev/Next page. Spacebar / shift+spacebar should do the same.
509 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
510 pp::KeyboardInputEvent keyboard_event(event);
511 bool no_h_scrollbar = !h_scrollbar_.get();
512 uint32_t key_code = keyboard_event.GetKeyCode();
513 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
514 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
515 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
516 bool has_shift =
517 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
518 bool key_is_space = key_code == ui::VKEY_SPACE;
519 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
520 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
521 }
522 if (page_down) {
523 int page = engine_->GetFirstVisiblePage();
524 if (page == -1)
525 return true;
526 // Engine calculates visible page including delimiter to the page size.
527 // We need to check here if the page itself is completely out of view and
528 // scroll to the next one in that case.
529 if (engine_->GetPageRect(page).bottom() * zoom_ <=
530 v_scrollbar_->GetValue())
531 page++;
532 ScrollToPage(page + 1);
533 UpdateCursor(PP_CURSORTYPE_POINTER);
534 return true;
535 } else if (page_up) {
536 int page = engine_->GetFirstVisiblePage();
537 if (page == -1)
538 return true;
539 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
540 page--;
541 ScrollToPage(page);
542 UpdateCursor(PP_CURSORTYPE_POINTER);
543 return true;
544 }
545 }
546
547 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
548 UpdateCursor(PP_CURSORTYPE_POINTER);
549 return true;
550 }
551
552 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
553 UpdateCursor(PP_CURSORTYPE_POINTER);
554 return true;
555 }
556
557 if (timer_pending_ &&
558 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
559 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
560 timer_factory_.CancelAll();
561 timer_pending_ = false;
562 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
563 engine_->IsSelecting()) {
564 bool set_timer = false;
565 pp::MouseInputEvent mouse_event(event);
566 if (v_scrollbar_.get() &&
567 (mouse_event.GetPosition().y() <= 0 ||
568 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
569 v_scrollbar_->ScrollBy(
570 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
571 set_timer = true;
572 }
573 if (h_scrollbar_.get() &&
574 (mouse_event.GetPosition().x() <= 0 ||
575 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
576 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
577 mouse_event.GetPosition().x() >= 0 ? 1: -1);
578 set_timer = true;
579 }
580
581 if (set_timer) {
582 last_mouse_event_ = pp::MouseInputEvent(event);
583
584 pp::CompletionCallback callback =
585 timer_factory_.NewCallback(&Instance::OnTimerFired);
586 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
587 timer_pending_ = true;
588 }
589 }
590
591 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
592 pp::KeyboardInputEvent keyboard_event(event);
593 const uint32 modifier = event.GetModifiers();
594 if (modifier & kDefaultKeyModifier) {
595 switch (keyboard_event.GetKeyCode()) {
596 case 'A':
597 engine_->SelectAll();
598 return true;
599 }
600 }
601 if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
602 switch (keyboard_event.GetKeyCode()) {
603 case ui::VKEY_OEM_4:
604 // Left bracket.
605 engine_->RotateCounterclockwise();
606 return true;
607 case ui::VKEY_OEM_6:
608 // Right bracket.
609 engine_->RotateClockwise();
610 return true;
611 }
612 }
613 }
614
615 // Return true for unhandled clicks so the plugin takes focus.
616 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
617 }
618
619 void Instance::DidChangeView(const pp::View& view) {
620 pp::Rect view_rect(view.GetRect());
621 float device_scale = 1.0f;
622 float old_device_scale = device_scale_;
623 if (hidpi_enabled_)
624 device_scale = view.GetDeviceScale();
625 pp::Size view_device_size(view_rect.width() * device_scale,
626 view_rect.height() * device_scale);
627 if (view_device_size == plugin_size_ && device_scale == device_scale_)
628 return; // We don't care about the position, only the size.
629
630 image_data_ = pp::ImageData();
631 device_scale_ = device_scale;
632 plugin_dip_size_ = view_rect.size();
633 plugin_size_ = view_device_size;
634
635 paint_manager_.SetSize(view_device_size, device_scale_);
636
637 image_data_ = pp::ImageData(this,
638 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
639 plugin_size_,
640 false);
641 if (image_data_.is_null()) {
642 DCHECK(plugin_size_.IsEmpty());
643 return;
644 }
645
646 // View dimensions changed, disable autoscroll (if it was enabled).
647 DisableAutoscroll();
648
649 OnGeometryChanged(zoom_, old_device_scale);
650 }
651
652 pp::Var Instance::GetInstanceObject() {
653 if (instance_object_.is_undefined()) {
654 PDFScriptableObject* object = new PDFScriptableObject(this);
655 // The pp::Var takes ownership of object here.
656 instance_object_ = pp::VarPrivate(this, object);
657 }
658
659 return instance_object_;
660 }
661
662 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
663 pp::Point offset_point(point);
664 ScalePoint(device_scale_, &offset_point);
665 offset_point.set_x(offset_point.x() - available_area_.x());
666 return engine_->GetLinkAtPosition(offset_point);
667 }
668
669 pp::Var Instance::GetSelectedText(bool html) {
670 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
671 return pp::Var();
672 return engine_->GetSelectedText();
673 }
674
675 void Instance::InvalidateWidget(pp::Widget_Dev widget,
676 const pp::Rect& dirty_rect) {
677 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
678 if (!image_data_.is_null())
679 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
680 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
681 if (!image_data_.is_null())
682 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
683 } else {
684 // Possible to hit this condition since sometimes the scrollbar codes posts
685 // a task to do something later, and we could have deleted our reference in
686 // the meantime.
687 return;
688 }
689
690 pp::Rect dirty_rect_scaled = dirty_rect;
691 ScaleRect(device_scale_, &dirty_rect_scaled);
692 paint_manager_.InvalidateRect(dirty_rect_scaled);
693 }
694
695 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
696 uint32_t value) {
697 value = GetScaled(value);
698 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
699 engine_->ScrolledToYPosition(value);
700 pp::Rect rc;
701 v_scrollbar_->GetLocation(&rc);
702 int32 doc_height = GetDocumentPixelHeight();
703 doc_height -= GetScaled(rc.height());
704 #ifdef ENABLE_THUMBNAILS
705 if (thumbnails_.visible()) {
706 thumbnails_.SetPosition(value, doc_height, true);
707 }
708 #endif
709 pp::Point origin(
710 plugin_size_.width() - page_indicator_.rect().width() -
711 GetScaled(GetScrollbarReservedThickness()),
712 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
713 page_indicator_.MoveTo(origin, page_indicator_.visible());
714 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
715 engine_->ScrolledToXPosition(value);
716 }
717 }
718
719 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
720 bool overlay) {
721 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
722 OnGeometryChanged(zoom_, device_scale_);
723 }
724
725 uint32_t Instance::QuerySupportedPrintOutputFormats() {
726 return engine_->QuerySupportedPrintOutputFormats();
727 }
728
729 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
730 // For us num_pages is always equal to the number of pages in the PDF
731 // document irrespective of the printable area.
732 int32_t ret = engine_->GetNumberOfPages();
733 if (!ret)
734 return 0;
735
736 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
737 if ((print_settings.format & supported_formats) == 0)
738 return 0;
739
740 print_settings_.is_printing = true;
741 print_settings_.pepper_print_settings = print_settings;
742 engine_->PrintBegin();
743 return ret;
744 }
745
746 pp::Resource Instance::PrintPages(
747 const PP_PrintPageNumberRange_Dev* page_ranges,
748 uint32_t page_range_count) {
749 if (!print_settings_.is_printing)
750 return pp::Resource();
751
752 print_settings_.print_pages_called_ = true;
753 return engine_->PrintPages(page_ranges, page_range_count,
754 print_settings_.pepper_print_settings);
755 }
756
757 void Instance::PrintEnd() {
758 if (print_settings_.print_pages_called_)
759 UserMetricsRecordAction("PDF.PrintPage");
760 print_settings_.Clear();
761 engine_->PrintEnd();
762 }
763
764 bool Instance::IsPrintScalingDisabled() {
765 return !engine_->GetPrintScaling();
766 }
767
768 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
769 engine_->StartFind(text.c_str(), case_sensitive);
770 return true;
771 }
772
773 void Instance::SelectFindResult(bool forward) {
774 engine_->SelectFindResult(forward);
775 }
776
777 void Instance::StopFind() {
778 engine_->StopFind();
779 }
780
781 void Instance::Zoom(double scale, bool text_only) {
782 UserMetricsRecordAction("PDF.ZoomFromBrowser");
783
784 // If the zoom level doesn't change it means that this zoom change might have
785 // been initiated by the plugin. In that case, we don't want to change the
786 // zoom mode to ZOOM_SCALE as it may have been intentionally set to
787 // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
788 if (scale == zoom_)
789 return;
790
791 SetZoom(ZOOM_SCALE, scale);
792 }
793
794 void Instance::ZoomChanged(double factor) {
795 if (full_)
796 Zoom_Dev::ZoomChanged(factor);
797 }
798
799 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
800 std::vector<PaintManager::ReadyRect>* ready,
801 std::vector<pp::Rect>* pending) {
802 if (image_data_.is_null()) {
803 DCHECK(plugin_size_.IsEmpty());
804 return;
805 }
806 if (first_paint_) {
807 first_paint_ = false;
808 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
809 FillRect(rect, kBackgroundColor);
810 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
811 *pending = paint_rects;
812 return;
813 }
814
815 engine_->PrePaint();
816
817 for (size_t i = 0; i < paint_rects.size(); i++) {
818 // Intersect with plugin area since there could be pending invalidates from
819 // when the plugin area was larger.
820 pp::Rect rect =
821 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
822 if (rect.IsEmpty())
823 continue;
824
825 pp::Rect pdf_rect = available_area_.Intersect(rect);
826 if (!pdf_rect.IsEmpty()) {
827 pdf_rect.Offset(available_area_.x() * -1, 0);
828
829 std::vector<pp::Rect> pdf_ready;
830 std::vector<pp::Rect> pdf_pending;
831 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
832 for (size_t j = 0; j < pdf_ready.size(); ++j) {
833 pdf_ready[j].Offset(available_area_.point());
834 ready->push_back(
835 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
836 }
837 for (size_t j = 0; j < pdf_pending.size(); ++j) {
838 pdf_pending[j].Offset(available_area_.point());
839 pending->push_back(pdf_pending[j]);
840 }
841 }
842
843 for (size_t j = 0; j < background_parts_.size(); ++j) {
844 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
845 if (!intersection.IsEmpty()) {
846 FillRect(intersection, background_parts_[j].color);
847 ready->push_back(
848 PaintManager::ReadyRect(intersection, image_data_, false));
849 }
850 }
851
852 if (document_load_state_ == LOAD_STATE_FAILED) {
853 pp::Point top_center;
854 top_center.set_x(plugin_size_.width() / 2);
855 top_center.set_y(plugin_size_.height() / 2);
856 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
857 }
858
859 #ifdef ENABLE_THUMBNAILS
860 thumbnails_.Paint(&image_data_, rect);
861 #endif
862 }
863
864 engine_->PostPaint();
865
866 // Must paint scrollbars after the background parts, in case we have an
867 // overlay scrollbar that's over the background. We also do this in a separate
868 // loop because the scrollbar painting logic uses the signal of whether there
869 // are pending paints or not to figure out if it should draw right away or
870 // not.
871 for (size_t i = 0; i < paint_rects.size(); i++) {
872 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
873 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
874 }
875
876 if (progress_bar_.visible())
877 PaintOverlayControl(&progress_bar_, &image_data_, ready);
878
879 if (page_indicator_.visible())
880 PaintOverlayControl(&page_indicator_, &image_data_, ready);
881
882 if (toolbar_->current_transparency() != kTransparentAlpha)
883 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
884
885 // Paint autoscroll anchor if needed.
886 if (is_autoscroll_) {
887 size_t limit = ready->size();
888 for (size_t i = 0; i < limit; i++) {
889 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
890 if (!anchor_rect.IsEmpty()) {
891 pp::Rect draw_rc = pp::Rect(
892 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
893 anchor_rect.y() - autoscroll_rect_.y()),
894 anchor_rect.size());
895 // Paint autoscroll anchor.
896 AlphaBlend(autoscroll_anchor_, draw_rc,
897 &image_data_, anchor_rect.point(), kOpaqueAlpha);
898 }
899 }
900 }
901 }
902
903 void Instance::PaintOverlayControl(
904 Control* ctrl,
905 pp::ImageData* image_data,
906 std::vector<PaintManager::ReadyRect>* ready) {
907 // Make sure that we only paint overlay controls over an area that's ready,
908 // i.e. not pending. Otherwise we'll mark the control rect as ready and
909 // it'll overwrite the pdf region.
910 std::list<pp::Rect> ctrl_rects;
911 for (size_t i = 0; i < ready->size(); i++) {
912 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
913 if (!rc.IsEmpty())
914 ctrl_rects.push_back(rc);
915 }
916
917 if (!ctrl_rects.empty()) {
918 ctrl->PaintMultipleRects(image_data, ctrl_rects);
919
920 std::list<pp::Rect>::iterator iter;
921 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
922 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
923 }
924 }
925 }
926
927 void Instance::DidOpen(int32_t result) {
928 if (result == PP_OK) {
929 engine_->HandleDocumentLoad(embed_loader_);
930 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
931 NOTREACHED();
932 }
933 }
934
935 void Instance::DidOpenPreview(int32_t result) {
936 if (result == PP_OK) {
937 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
938 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
939 } else {
940 NOTREACHED();
941 }
942 }
943
944 void Instance::PaintIfWidgetIntersects(
945 pp::Widget_Dev* widget,
946 const pp::Rect& rect,
947 std::vector<PaintManager::ReadyRect>* ready,
948 std::vector<pp::Rect>* pending) {
949 if (!widget)
950 return;
951
952 pp::Rect location;
953 if (!widget->GetLocation(&location))
954 return;
955
956 ScaleRect(device_scale_, &location);
957 location = location.Intersect(rect);
958 if (location.IsEmpty())
959 return;
960
961 if (IsOverlayScrollbar()) {
962 // If we're using overlay scrollbars, and there are pending paints under the
963 // scrollbar, don't update the scrollbar instantly. While it would be nice,
964 // we would need to double buffer the plugin area in order to make this
965 // work. This is because we'd need to always have a copy of what the pdf
966 // under the scrollbar looks like, and additionally we couldn't paint the
967 // pdf under the scrollbar if it's ready until we got the preceding flush.
968 // So in practice, it would make painting slower and introduce extra buffer
969 // copies for the general case.
970 for (size_t i = 0; i < pending->size(); ++i) {
971 if ((*pending)[i].Intersects(location))
972 return;
973 }
974
975 // Even if none of the pending paints are under the scrollbar, we never want
976 // to paint it if it's over the pdf if there are other pending paints.
977 // Otherwise different parts of the pdf plugin would display at different
978 // scroll offsets.
979 if (!pending->empty() && available_area_.Intersects(rect)) {
980 pending->push_back(location);
981 return;
982 }
983 }
984
985 pp::Rect location_dip = location;
986 ScaleRect(1.0f / device_scale_, &location_dip);
987
988 DCHECK(!image_data_.is_null());
989 widget->Paint(location_dip, &image_data_);
990
991 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
992 }
993
994 void Instance::OnTimerFired(int32_t) {
995 HandleInputEvent(last_mouse_event_);
996 }
997
998 void Instance::OnClientTimerFired(int32_t id) {
999 engine_->OnCallback(id);
1000 }
1001
1002 void Instance::OnControlTimerFired(int32_t,
1003 const uint32& control_id,
1004 const uint32& timer_id) {
1005 if (control_id == toolbar_->id()) {
1006 toolbar_->OnTimerFired(timer_id);
1007 } else if (control_id == progress_bar_.id()) {
1008 if (timer_id == delayed_progress_timer_id_) {
1009 if (document_load_state_ == LOAD_STATE_LOADING &&
1010 !progress_bar_.visible()) {
1011 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1012 }
1013 delayed_progress_timer_id_ = 0;
1014 } else {
1015 progress_bar_.OnTimerFired(timer_id);
1016 }
1017 } else if (control_id == kAutoScrollId) {
1018 if (is_autoscroll_) {
1019 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1020 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1021 }
1022 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1023 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1024 }
1025
1026 // Reschedule timer.
1027 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1028 }
1029 } else if (control_id == kPageIndicatorId) {
1030 page_indicator_.OnTimerFired(timer_id);
1031 }
1032 #ifdef ENABLE_THUMBNAILS
1033 else if (control_id == thumbnails_.id()) {
1034 thumbnails_.OnTimerFired(timer_id);
1035 }
1036 #endif
1037 }
1038
1039 void Instance::CalculateBackgroundParts() {
1040 background_parts_.clear();
1041 int v_scrollbar_thickness =
1042 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1043 int h_scrollbar_thickness =
1044 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1045 int width_without_scrollbar = std::max(
1046 plugin_size_.width() - v_scrollbar_thickness, 0);
1047 int height_without_scrollbar = std::max(
1048 plugin_size_.height() - h_scrollbar_thickness, 0);
1049 int left_width = available_area_.x();
1050 int right_start = available_area_.right();
1051 int right_width = abs(width_without_scrollbar - available_area_.right());
1052 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1053
1054 // Add the left, right, and bottom rectangles. Note: we assume only
1055 // horizontal centering.
1056 BackgroundPart part = {
1057 pp::Rect(0, 0, left_width, bottom),
1058 kBackgroundColor
1059 };
1060 if (!part.location.IsEmpty())
1061 background_parts_.push_back(part);
1062 part.location = pp::Rect(right_start, 0, right_width, bottom);
1063 if (!part.location.IsEmpty())
1064 background_parts_.push_back(part);
1065 part.location = pp::Rect(
1066 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1067 if (!part.location.IsEmpty())
1068 background_parts_.push_back(part);
1069
1070 if (h_scrollbar_thickness
1071 #if defined(OS_MACOSX)
1072 ||
1073 #else
1074 &&
1075 #endif
1076 v_scrollbar_thickness) {
1077 part.color = 0xFFFFFFFF;
1078 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1079 plugin_size_.height() - h_scrollbar_thickness,
1080 h_scrollbar_thickness,
1081 v_scrollbar_thickness);
1082 background_parts_.push_back(part);
1083 }
1084 }
1085
1086 int Instance::GetDocumentPixelWidth() const {
1087 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1088 }
1089
1090 int Instance::GetDocumentPixelHeight() const {
1091 return static_cast<int>(ceil(document_size_.height() *
1092 zoom_ *
1093 device_scale_));
1094 }
1095
1096 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1097 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1098 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1099 int stride = image_data_.stride();
1100 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1101 int height = rect.height();
1102 int width = rect.width();
1103 for (int y = 0; y < height; ++y) {
1104 for (int x = 0; x < width; ++x)
1105 *(ptr + x) = color;
1106 ptr += stride / 4;
1107 }
1108 }
1109
1110 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1111 document_size_ = size;
1112
1113 OnGeometryChanged(zoom_, device_scale_);
1114 }
1115
1116 void Instance::Invalidate(const pp::Rect& rect) {
1117 pp::Rect offset_rect(rect);
1118 offset_rect.Offset(available_area_.point());
1119 paint_manager_.InvalidateRect(offset_rect);
1120 }
1121
1122 void Instance::Scroll(const pp::Point& point) {
1123 pp::Rect scroll_area = available_area_;
1124 if (IsOverlayScrollbar()) {
1125 pp::Rect rc;
1126 if (h_scrollbar_.get()) {
1127 h_scrollbar_->GetLocation(&rc);
1128 ScaleRect(device_scale_, &rc);
1129 if (scroll_area.bottom() > rc.y()) {
1130 scroll_area.set_height(rc.y() - scroll_area.y());
1131 paint_manager_.InvalidateRect(rc);
1132 }
1133 }
1134 if (v_scrollbar_.get()) {
1135 v_scrollbar_->GetLocation(&rc);
1136 ScaleRect(device_scale_, &rc);
1137 if (scroll_area.right() > rc.x()) {
1138 scroll_area.set_width(rc.x() - scroll_area.x());
1139 paint_manager_.InvalidateRect(rc);
1140 }
1141 }
1142 }
1143 paint_manager_.ScrollRect(scroll_area, point);
1144
1145 if (toolbar_->current_transparency() != kTransparentAlpha)
1146 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1147
1148 if (progress_bar_.visible())
1149 paint_manager_.InvalidateRect(progress_bar_.rect());
1150
1151 if (is_autoscroll_)
1152 paint_manager_.InvalidateRect(autoscroll_rect_);
1153
1154 if (show_page_indicator_) {
1155 page_indicator_.set_current_page(GetPageNumberToDisplay());
1156 page_indicator_.Splash();
1157 }
1158
1159 if (page_indicator_.visible())
1160 paint_manager_.InvalidateRect(page_indicator_.rect());
1161
1162 // Run the scroll callback asynchronously. This function can be invoked by a
1163 // layout change which should not re-enter into JS synchronously.
1164 pp::CompletionCallback callback =
1165 callback_factory_.NewCallback(&Instance::RunCallback,
1166 on_scroll_callback_);
1167 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1168 }
1169
1170 void Instance::ScrollToX(int position) {
1171 if (!h_scrollbar_.get()) {
1172 NOTREACHED();
1173 return;
1174 }
1175 int position_dip = static_cast<int>(position / device_scale_);
1176 h_scrollbar_->SetValue(position_dip);
1177 }
1178
1179 void Instance::ScrollToY(int position) {
1180 if (!v_scrollbar_.get()) {
1181 NOTREACHED();
1182 return;
1183 }
1184 int position_dip = static_cast<int>(position / device_scale_);
1185 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1186 }
1187
1188 void Instance::ScrollToPage(int page) {
1189 if (!v_scrollbar_.get())
1190 return;
1191
1192 if (engine_->GetNumberOfPages() == 0)
1193 return;
1194
1195 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1196 pp::Rect rect = engine_->GetPageRect(index);
1197 // If we are trying to scroll pass the last page,
1198 // scroll to the end of the last page.
1199 int position = index < page ? rect.bottom() : rect.y();
1200 ScrollToY(position * zoom_ * device_scale_);
1201 }
1202
1203 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1204 std::string url_copy(url);
1205
1206 // Empty |url_copy| is ok, and will effectively be a reload.
1207 // Skip the code below so an empty URL does not turn into "http://", which
1208 // will cause GURL to fail a DCHECK.
1209 if (!url_copy.empty()) {
1210 // If |url_copy| starts with '#', then it's for the same URL with a
1211 // different URL fragment.
1212 if (url_copy[0] == '#') {
1213 url_copy = url_ + url_copy;
1214 // Changing the href does not actually do anything when navigating in the
1215 // same tab, so do the actual page scroll here. Then fall through so the
1216 // href gets updated.
1217 if (!open_in_new_tab) {
1218 int page_number = GetInitialPage(url_copy);
1219 if (page_number >= 0)
1220 ScrollToPage(page_number);
1221 }
1222 }
1223 // If there's no scheme, add http.
1224 if (url_copy.find("://") == std::string::npos &&
1225 url_copy.find("mailto:") == std::string::npos) {
1226 url_copy = "http://" + url_copy;
1227 }
1228 // Make sure |url_copy| starts with a valid scheme.
1229 if (url_copy.find("http://") != 0 &&
1230 url_copy.find("https://") != 0 &&
1231 url_copy.find("ftp://") != 0 &&
1232 url_copy.find("file://") != 0 &&
1233 url_copy.find("mailto:") != 0) {
1234 return;
1235 }
1236 // Make sure |url_copy| is not only a scheme.
1237 if (url_copy == "http://" ||
1238 url_copy == "https://" ||
1239 url_copy == "ftp://" ||
1240 url_copy == "file://" ||
1241 url_copy == "mailto:") {
1242 return;
1243 }
1244 }
1245 if (open_in_new_tab) {
1246 GetWindowObject().Call("open", url_copy);
1247 } else {
1248 GetWindowObject().GetProperty("top").GetProperty("location").
1249 SetProperty("href", url_copy);
1250 }
1251 }
1252
1253 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1254 if (cursor == cursor_)
1255 return;
1256 cursor_ = cursor;
1257
1258 const PPB_CursorControl_Dev* cursor_interface =
1259 reinterpret_cast<const PPB_CursorControl_Dev*>(
1260 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1261 if (!cursor_interface) {
1262 NOTREACHED();
1263 return;
1264 }
1265
1266 cursor_interface->SetCursor(
1267 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1268 }
1269
1270 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1271 if (!v_scrollbar_.get())
1272 return;
1273
1274 float inverse_scale = 1.0f / device_scale_;
1275 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1276 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1277 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1278 }
1279
1280 v_scrollbar_->SetTickMarks(
1281 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1282 }
1283
1284 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1285 NumberOfFindResultsChanged(total, final_result);
1286 }
1287
1288 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1289 SelectedFindResultChanged(current_find_index);
1290 }
1291
1292 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1293 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1294 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1295 switch (control_id) {
1296 case kFitToPageButtonId:
1297 UserMetricsRecordAction("PDF.FitToPageButton");
1298 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1299 ZoomChanged(zoom_);
1300 break;
1301 case kFitToWidthButtonId:
1302 UserMetricsRecordAction("PDF.FitToWidthButton");
1303 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1304 ZoomChanged(zoom_);
1305 break;
1306 case kZoomOutButtonId:
1307 case kZoomInButtonId:
1308 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1309 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1310 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1311 ZoomChanged(zoom_);
1312 break;
1313 case kSaveButtonId:
1314 UserMetricsRecordAction("PDF.SaveButton");
1315 SaveAs();
1316 break;
1317 case kPrintButtonId:
1318 UserMetricsRecordAction("PDF.PrintButton");
1319 Print();
1320 break;
1321 }
1322 }
1323 if (control_id == kThumbnailsId &&
1324 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1325 int page = *static_cast<int*>(data);
1326 pp::Rect page_rc(engine_->GetPageRect(page));
1327 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1328 }
1329 }
1330
1331 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1332 paint_manager_.InvalidateRect(rc);
1333 }
1334
1335 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1336 current_timer_id_++;
1337 pp::CompletionCallback callback =
1338 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1339 control_id,
1340 current_timer_id_);
1341 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1342 return current_timer_id_;
1343 }
1344
1345 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1346 // TODO(gene): set event capture here.
1347 }
1348
1349 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1350 UpdateCursor(cursor_type);
1351 }
1352
1353 pp::Instance* Instance::GetInstance() {
1354 return this;
1355 }
1356
1357 void Instance::GetDocumentPassword(
1358 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1359 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1360 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1361 *callback.output() = result.pp_var();
1362 callback.Run(PP_OK);
1363 }
1364
1365 void Instance::Alert(const std::string& message) {
1366 GetWindowObject().Call("alert", message);
1367 }
1368
1369 bool Instance::Confirm(const std::string& message) {
1370 pp::Var result = GetWindowObject().Call("confirm", message);
1371 return result.is_bool() ? result.AsBool() : false;
1372 }
1373
1374 std::string Instance::Prompt(const std::string& question,
1375 const std::string& default_answer) {
1376 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1377 return result.is_string() ? result.AsString() : std::string();
1378 }
1379
1380 std::string Instance::GetURL() {
1381 return url_;
1382 }
1383
1384 void Instance::Email(const std::string& to,
1385 const std::string& cc,
1386 const std::string& bcc,
1387 const std::string& subject,
1388 const std::string& body) {
1389 std::string javascript =
1390 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1391 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1392 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1393 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1394 "&body=" + net::EscapeUrlEncodedData(body, false) +
1395 "';var temp = window.open(href, '_blank', " +
1396 "'width=1,height=1');if(temp) temp.close();";
1397 ExecuteScript(javascript);
1398 }
1399
1400 void Instance::Print() {
1401 if (!printing_enabled_ ||
1402 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1403 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1404 return;
1405 }
1406
1407 pp::CompletionCallback callback =
1408 callback_factory_.NewCallback(&Instance::OnPrint);
1409 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1410 }
1411
1412 void Instance::OnPrint(int32_t) {
1413 pp::PDF::Print(this);
1414 }
1415
1416 void Instance::SaveAs() {
1417 pp::PDF::SaveAs(this);
1418 }
1419
1420 void Instance::SubmitForm(const std::string& url,
1421 const void* data,
1422 int length) {
1423 pp::URLRequestInfo request(this);
1424 request.SetURL(url);
1425 request.SetMethod("POST");
1426 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1427
1428 pp::CompletionCallback callback =
1429 form_factory_.NewCallback(&Instance::FormDidOpen);
1430 form_loader_ = CreateURLLoaderInternal();
1431 int rv = form_loader_.Open(request, callback);
1432 if (rv != PP_OK_COMPLETIONPENDING)
1433 callback.Run(rv);
1434 }
1435
1436 void Instance::FormDidOpen(int32_t result) {
1437 // TODO: inform the user of success/failure.
1438 if (result != PP_OK) {
1439 NOTREACHED();
1440 }
1441 }
1442
1443 std::string Instance::ShowFileSelectionDialog() {
1444 // Seems like very low priority to implement, since the pdf has no way to get
1445 // the file data anyways. Javascript doesn't let you do this synchronously.
1446 NOTREACHED();
1447 return std::string();
1448 }
1449
1450 pp::URLLoader Instance::CreateURLLoader() {
1451 if (full_) {
1452 if (!did_call_start_loading_) {
1453 did_call_start_loading_ = true;
1454 pp::PDF::DidStartLoading(this);
1455 }
1456
1457 // Disable save and print until the document is fully loaded, since they
1458 // would generate an incomplete document. Need to do this each time we
1459 // call DidStartLoading since that resets the content restrictions.
1460 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1461 CONTENT_RESTRICTION_PRINT);
1462 }
1463
1464 return CreateURLLoaderInternal();
1465 }
1466
1467 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1468 pp::CompletionCallback callback =
1469 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1470 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1471 }
1472
1473 void Instance::SearchString(const base::char16* string,
1474 const base::char16* term,
1475 bool case_sensitive,
1476 std::vector<SearchStringResult>* results) {
1477 if (!pp::PDF::IsAvailable()) {
1478 NOTREACHED();
1479 return;
1480 }
1481
1482 PP_PrivateFindResult* pp_results;
1483 int count = 0;
1484 pp::PDF::SearchString(
1485 this,
1486 reinterpret_cast<const unsigned short*>(string),
1487 reinterpret_cast<const unsigned short*>(term),
1488 case_sensitive,
1489 &pp_results,
1490 &count);
1491
1492 results->resize(count);
1493 for (int i = 0; i < count; ++i) {
1494 (*results)[i].start_index = pp_results[i].start_index;
1495 (*results)[i].length = pp_results[i].length;
1496 }
1497
1498 pp::Memory_Dev memory;
1499 memory.MemFree(pp_results);
1500 }
1501
1502 void Instance::DocumentPaintOccurred() {
1503 if (painted_first_page_)
1504 return;
1505
1506 painted_first_page_ = true;
1507 UpdateToolbarPosition(false);
1508 toolbar_->Splash(kToolbarSplashTimeoutMs);
1509
1510 if (engine_->GetNumberOfPages() > 1)
1511 show_page_indicator_ = true;
1512 else
1513 show_page_indicator_ = false;
1514
1515 if (v_scrollbar_.get() && show_page_indicator_) {
1516 page_indicator_.set_current_page(GetPageNumberToDisplay());
1517 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1518 kPageIndicatorInitialFadeTimeoutMs);
1519 }
1520 }
1521
1522 void Instance::DocumentLoadComplete(int page_count) {
1523 // Clear focus state for OSK.
1524 FormTextFieldFocusChange(false);
1525
1526 // Update progress control.
1527 if (progress_bar_.visible())
1528 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1529
1530 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1531 document_load_state_ = LOAD_STATE_COMPLETE;
1532 UserMetricsRecordAction("PDF.LoadSuccess");
1533
1534 if (did_call_start_loading_) {
1535 pp::PDF::DidStopLoading(this);
1536 did_call_start_loading_ = false;
1537 }
1538
1539 if (on_load_callback_.is_string())
1540 ExecuteScript(on_load_callback_);
1541 // Note: If we are in print preview mode on_load_callback_ might call
1542 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1543 // #page=N is not supported in Print Preview.
1544 if (!IsPrintPreview()) {
1545 int initial_page = GetInitialPage(url_);
1546 if (initial_page >= 0)
1547 ScrollToPage(initial_page);
1548 }
1549
1550 if (!full_)
1551 return;
1552 if (!pp::PDF::IsAvailable())
1553 return;
1554
1555 int content_restrictions =
1556 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1557 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1558 content_restrictions |= CONTENT_RESTRICTION_COPY;
1559
1560 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1561 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1562 printing_enabled_ = false;
1563 if (current_tb_info_ == kPDFToolbarButtons) {
1564 // Remove Print button.
1565 CreateToolbar(kPDFNoPrintToolbarButtons,
1566 arraysize(kPDFNoPrintToolbarButtons));
1567 UpdateToolbarPosition(false);
1568 Invalidate(pp::Rect(plugin_size_));
1569 }
1570 }
1571
1572 pp::PDF::SetContentRestriction(this, content_restrictions);
1573
1574 pp::PDF::HistogramPDFPageCount(this, page_count);
1575 }
1576
1577 void Instance::RotateClockwise() {
1578 engine_->RotateClockwise();
1579 }
1580
1581 void Instance::RotateCounterclockwise() {
1582 engine_->RotateCounterclockwise();
1583 }
1584
1585 void Instance::PreviewDocumentLoadComplete() {
1586 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1587 preview_pages_info_.empty()) {
1588 return;
1589 }
1590
1591 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1592
1593 int dest_page_index = preview_pages_info_.front().second;
1594 int src_page_index =
1595 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1596 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1597 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1598
1599 preview_pages_info_.pop();
1600 // |print_preview_page_count_| is not updated yet. Do not load any
1601 // other preview pages till we get this information.
1602 if (print_preview_page_count_ == 0)
1603 return;
1604
1605 if (preview_pages_info_.size())
1606 LoadAvailablePreviewPage();
1607 }
1608
1609 void Instance::DocumentLoadFailed() {
1610 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1611 UserMetricsRecordAction("PDF.LoadFailure");
1612
1613 // Hide progress control.
1614 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1615
1616 if (did_call_start_loading_) {
1617 pp::PDF::DidStopLoading(this);
1618 did_call_start_loading_ = false;
1619 }
1620
1621 document_load_state_ = LOAD_STATE_FAILED;
1622 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1623 }
1624
1625 void Instance::PreviewDocumentLoadFailed() {
1626 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1627 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1628 preview_pages_info_.empty()) {
1629 return;
1630 }
1631
1632 preview_document_load_state_ = LOAD_STATE_FAILED;
1633 preview_pages_info_.pop();
1634
1635 if (preview_pages_info_.size())
1636 LoadAvailablePreviewPage();
1637 }
1638
1639 pp::Instance* Instance::GetPluginInstance() {
1640 return GetInstance();
1641 }
1642
1643 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1644 std::string metric("PDF_Unsupported_");
1645 metric += feature;
1646 if (!unsupported_features_reported_.count(metric)) {
1647 unsupported_features_reported_.insert(metric);
1648 UserMetricsRecordAction(metric);
1649 }
1650
1651 // Since we use an info bar, only do this for full frame plugins..
1652 if (!full_)
1653 return;
1654
1655 if (told_browser_about_unsupported_feature_)
1656 return;
1657 told_browser_about_unsupported_feature_ = true;
1658
1659 pp::PDF::HasUnsupportedFeature(this);
1660 }
1661
1662 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1663 double progress = 0.0;
1664 if (doc_size == 0) {
1665 // Document size is unknown. Use heuristics.
1666 // We'll make progress logarithmic from 0 to 100M.
1667 static const double kFactor = log(100000000.0) / 100.0;
1668 if (available > 0) {
1669 progress = log(static_cast<double>(available)) / kFactor;
1670 if (progress > 100.0)
1671 progress = 100.0;
1672 }
1673 } else {
1674 progress = 100.0 * static_cast<double>(available) / doc_size;
1675 }
1676 progress_bar_.SetProgress(progress);
1677 }
1678
1679 void Instance::FormTextFieldFocusChange(bool in_focus) {
1680 if (!text_input_.get())
1681 return;
1682 if (in_focus)
1683 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1684 else
1685 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1686 }
1687
1688 // Called by PDFScriptableObject.
1689 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1690 std::string method_str = method.AsString();
1691 return (method_str == kJSAccessibility ||
1692 method_str == kJSDocumentLoadComplete ||
1693 method_str == kJSGetHeight ||
1694 method_str == kJSGetHorizontalScrollbarThickness ||
1695 method_str == kJSGetPageLocationNormalized ||
1696 method_str == kJSGetSelectedText ||
1697 method_str == kJSGetVerticalScrollbarThickness ||
1698 method_str == kJSGetWidth ||
1699 method_str == kJSGetZoomLevel ||
1700 method_str == kJSGoToPage ||
1701 method_str == kJSGrayscale ||
1702 method_str == kJSLoadPreviewPage ||
1703 method_str == kJSOnLoad ||
1704 method_str == kJSOnPluginSizeChanged ||
1705 method_str == kJSOnScroll ||
1706 method_str == kJSPageXOffset ||
1707 method_str == kJSPageYOffset ||
1708 method_str == kJSPrintPreviewPageCount ||
1709 method_str == kJSReload ||
1710 method_str == kJSRemovePrintButton ||
1711 method_str == kJSResetPrintPreviewUrl ||
1712 method_str == kJSSendKeyEvent ||
1713 method_str == kJSSetPageNumbers ||
1714 method_str == kJSSetPageXOffset ||
1715 method_str == kJSSetPageYOffset ||
1716 method_str == kJSSetZoomLevel ||
1717 method_str == kJSZoomFitToHeight ||
1718 method_str == kJSZoomFitToWidth ||
1719 method_str == kJSZoomIn ||
1720 method_str == kJSZoomOut);
1721 }
1722
1723 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1724 const std::vector<pp::Var>& args,
1725 pp::Var* exception) {
1726 std::string method_str = method.AsString();
1727 if (method_str == kJSGrayscale) {
1728 if (args.size() == 1 && args[0].is_bool()) {
1729 engine_->SetGrayscale(args[0].AsBool());
1730 // Redraw
1731 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1732 #ifdef ENABLE_THUMBNAILS
1733 if (thumbnails_.visible())
1734 thumbnails_.Show(true, true);
1735 #endif
1736 return pp::Var(true);
1737 }
1738 return pp::Var(false);
1739 }
1740 if (method_str == kJSOnLoad) {
1741 if (args.size() == 1 && args[0].is_string()) {
1742 on_load_callback_ = args[0];
1743 return pp::Var(true);
1744 }
1745 return pp::Var(false);
1746 }
1747 if (method_str == kJSOnScroll) {
1748 if (args.size() == 1 && args[0].is_string()) {
1749 on_scroll_callback_ = args[0];
1750 return pp::Var(true);
1751 }
1752 return pp::Var(false);
1753 }
1754 if (method_str == kJSOnPluginSizeChanged) {
1755 if (args.size() == 1 && args[0].is_string()) {
1756 on_plugin_size_changed_callback_ = args[0];
1757 return pp::Var(true);
1758 }
1759 return pp::Var(false);
1760 }
1761 if (method_str == kJSReload) {
1762 document_load_state_ = LOAD_STATE_LOADING;
1763 if (!full_)
1764 LoadUrl(url_);
1765 preview_engine_.reset();
1766 print_preview_page_count_ = 0;
1767 engine_.reset(PDFEngine::Create(this));
1768 engine_->New(url_.c_str());
1769 #ifdef ENABLE_THUMBNAILS
1770 thumbnails_.ResetEngine(engine_.get());
1771 #endif
1772 return pp::Var();
1773 }
1774 if (method_str == kJSResetPrintPreviewUrl) {
1775 if (args.size() == 1 && args[0].is_string()) {
1776 url_ = args[0].AsString();
1777 preview_pages_info_ = std::queue<PreviewPageInfo>();
1778 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1779 }
1780 return pp::Var();
1781 }
1782 if (method_str == kJSZoomFitToHeight) {
1783 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1784 return pp::Var();
1785 }
1786 if (method_str == kJSZoomFitToWidth) {
1787 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1788 return pp::Var();
1789 }
1790 if (method_str == kJSZoomIn) {
1791 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1792 return pp::Var();
1793 }
1794 if (method_str == kJSZoomOut) {
1795 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1796 return pp::Var();
1797 }
1798 if (method_str == kJSSetZoomLevel) {
1799 if (args.size() == 1 && args[0].is_number())
1800 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1801 return pp::Var();
1802 }
1803 if (method_str == kJSGetZoomLevel) {
1804 return pp::Var(zoom_);
1805 }
1806 if (method_str == kJSGetHeight) {
1807 return pp::Var(plugin_size_.height());
1808 }
1809 if (method_str == kJSGetWidth) {
1810 return pp::Var(plugin_size_.width());
1811 }
1812 if (method_str == kJSGetHorizontalScrollbarThickness) {
1813 return pp::Var(
1814 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1815 }
1816 if (method_str == kJSGetVerticalScrollbarThickness) {
1817 return pp::Var(
1818 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1819 }
1820 if (method_str == kJSGetSelectedText) {
1821 return GetSelectedText(false);
1822 }
1823 if (method_str == kJSDocumentLoadComplete) {
1824 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1825 }
1826 if (method_str == kJSPageYOffset) {
1827 return pp::Var(static_cast<int32_t>(
1828 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1829 }
1830 if (method_str == kJSSetPageYOffset) {
1831 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1832 ScrollToY(GetScaled(args[0].AsInt()));
1833 return pp::Var();
1834 }
1835 if (method_str == kJSPageXOffset) {
1836 return pp::Var(static_cast<int32_t>(
1837 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1838 }
1839 if (method_str == kJSSetPageXOffset) {
1840 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1841 ScrollToX(GetScaled(args[0].AsInt()));
1842 return pp::Var();
1843 }
1844 if (method_str == kJSRemovePrintButton) {
1845 CreateToolbar(kPrintPreviewToolbarButtons,
1846 arraysize(kPrintPreviewToolbarButtons));
1847 UpdateToolbarPosition(false);
1848 Invalidate(pp::Rect(plugin_size_));
1849 return pp::Var();
1850 }
1851 if (method_str == kJSGoToPage) {
1852 if (args.size() == 1 && args[0].is_string()) {
1853 ScrollToPage(atoi(args[0].AsString().c_str()));
1854 }
1855 return pp::Var();
1856 }
1857 if (method_str == kJSAccessibility) {
1858 if (args.size() == 0) {
1859 base::DictionaryValue node;
1860 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1861 node.SetBoolean(kAccessibleLoaded,
1862 document_load_state_ != LOAD_STATE_LOADING);
1863 bool has_permissions =
1864 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1865 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1866 node.SetBoolean(kAccessibleCopyable, has_permissions);
1867 std::string json;
1868 base::JSONWriter::Write(&node, &json);
1869 return pp::Var(json);
1870 } else if (args[0].is_number()) {
1871 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1872 }
1873 }
1874 if (method_str == kJSPrintPreviewPageCount) {
1875 if (args.size() == 1 && args[0].is_number())
1876 SetPrintPreviewMode(args[0].AsInt());
1877 return pp::Var();
1878 }
1879 if (method_str == kJSLoadPreviewPage) {
1880 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1881 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1882 return pp::Var();
1883 }
1884 if (method_str == kJSGetPageLocationNormalized) {
1885 const size_t kMaxLength = 30;
1886 char location_info[kMaxLength];
1887 int page_idx = engine_->GetMostVisiblePage();
1888 if (page_idx < 0)
1889 return pp::Var(std::string());
1890 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1891 int v_scrollbar_reserved_thickness =
1892 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1893
1894 rect.set_x(rect.x() + ((plugin_size_.width() -
1895 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1896 base::snprintf(location_info,
1897 kMaxLength,
1898 "%0.4f;%0.4f;%0.4f;%0.4f;",
1899 rect.x() / static_cast<float>(plugin_size_.width()),
1900 rect.y() / static_cast<float>(plugin_size_.height()),
1901 rect.width() / static_cast<float>(plugin_size_.width()),
1902 rect.height()/ static_cast<float>(plugin_size_.height()));
1903 return pp::Var(std::string(location_info));
1904 }
1905 if (method_str == kJSSetPageNumbers) {
1906 if (args.size() != 1 || !args[0].is_string())
1907 return pp::Var();
1908 const int num_pages_signed = engine_->GetNumberOfPages();
1909 if (num_pages_signed <= 0)
1910 return pp::Var();
1911 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1912 base::JSONReader::Read(args[0].AsString(), false)));
1913 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1914 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1915 return pp::Var();
1916
1917 std::vector<int> print_preview_page_numbers;
1918 for (size_t index = 0; index < num_pages; ++index) {
1919 int page_number = 0; // |page_number| is 1-based.
1920 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1921 return pp::Var();
1922 print_preview_page_numbers.push_back(page_number);
1923 }
1924 print_preview_page_numbers_ = print_preview_page_numbers;
1925 page_indicator_.set_current_page(GetPageNumberToDisplay());
1926 return pp::Var();
1927 }
1928 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1929 // In JS, creating a synthetic keyboard event and dispatching it always
1930 // result in a keycode of 0.
1931 if (method_str == kJSSendKeyEvent) {
1932 if (args.size() == 1 && args[0].is_number()) {
1933 pp::KeyboardInputEvent event(
1934 this, // instance
1935 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1936 0, // timestamp, not used for kbd events.
1937 0, // no modifiers.
1938 args[0].AsInt(), // keycode.
1939 pp::Var()); // no char text needed.
1940 HandleInputEvent(event);
1941 }
1942 }
1943 return pp::Var();
1944 }
1945
1946 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1947 bool force_no_horizontal_scrollbar = false;
1948 int scrollbar_thickness = GetScrollbarThickness();
1949
1950 if (old_device_scale != device_scale_) {
1951 // Change in device scale forces us to recreate resources
1952 ConfigureNumberImageGenerator();
1953
1954 CreateToolbar(current_tb_info_, current_tb_info_size_);
1955 // Load autoscroll anchor image.
1956 autoscroll_anchor_ =
1957 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1958
1959 ConfigurePageIndicator();
1960 ConfigureProgressBar();
1961
1962 pp::Point scroll_position = engine_->GetScrollPosition();
1963 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1964 engine_->SetScrollPosition(scroll_position);
1965 }
1966
1967 UpdateZoomScale();
1968 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1969 engine_->ZoomUpdated(zoom_ * device_scale_);
1970 if (zoom_ != old_zoom)
1971 ZoomChanged(zoom_);
1972
1973 available_area_ = pp::Rect(plugin_size_);
1974 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1975 CreateVerticalScrollbar();
1976 } else {
1977 DestroyVerticalScrollbar();
1978 }
1979
1980 int v_scrollbar_reserved_thickness =
1981 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1982
1983 if (!force_no_horizontal_scrollbar &&
1984 GetDocumentPixelWidth() >
1985 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1986 CreateHorizontalScrollbar();
1987
1988 // Adding the horizontal scrollbar now might cause us to need vertical
1989 // scrollbars.
1990 if (GetDocumentPixelHeight() >
1991 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1992 CreateVerticalScrollbar();
1993 }
1994
1995 } else {
1996 DestroyHorizontalScrollbar();
1997 }
1998
1999 #ifdef ENABLE_THUMBNAILS
2000 int thumbnails_pos = 0, thumbnails_total = 0;
2001 #endif
2002 if (v_scrollbar_.get()) {
2003 v_scrollbar_->SetScale(device_scale_);
2004 available_area_.set_width(
2005 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
2006
2007 #ifdef ENABLE_THUMBNAILS
2008 int height = plugin_size_.height();
2009 #endif
2010 int height_dip = plugin_dip_size_.height();
2011
2012 #if defined(OS_MACOSX)
2013 // Before Lion, Mac always had the resize at the bottom. After that, it
2014 // never did.
2015 if ((base::mac::IsOSSnowLeopard() && full_) ||
2016 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2017 #else
2018 if (h_scrollbar_.get()) {
2019 #endif // defined(OS_MACOSX)
2020 #ifdef ENABLE_THUMBNAILS
2021 height -= GetScaled(GetScrollbarThickness());
2022 #endif
2023 height_dip -= GetScrollbarThickness();
2024 }
2025 #ifdef ENABLE_THUMBNAILS
2026 int32 doc_height = GetDocumentPixelHeight();
2027 #endif
2028 int32 doc_height_dip =
2029 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2030 #if defined(OS_MACOSX)
2031 // On the Mac we always allow room for the resize button (whose width is
2032 // the same as that of the scrollbar) in full mode. However, if there is no
2033 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2034 // end of the document. This is because the scrollbar assumes that its own
2035 // height (in the case of a vscroll bar) is the same as the height of the
2036 // viewport. Since the viewport is actually larger, we compensate by
2037 // adjusting the document height. Similar logic applies below for the
2038 // horizontal scrollbar.
2039 // For example, if the document size is 1000, and the viewport size is 200,
2040 // then the scrollbar position at the end will be 800. In this case the
2041 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2042 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2043 // be 785. Making the document size 985 achieves this.
2044 if (full_ && !h_scrollbar_.get()) {
2045 #ifdef ENABLE_THUMBNAILS
2046 doc_height -= GetScaled(GetScrollbarThickness());
2047 #endif
2048 doc_height_dip -= GetScrollbarThickness();
2049 }
2050 #endif // defined(OS_MACOSX)
2051
2052 int32 position;
2053 position = v_scrollbar_->GetValue();
2054 position = static_cast<int>(position * zoom_ / old_zoom);
2055 valid_v_range_ = doc_height_dip - height_dip;
2056 if (position > valid_v_range_)
2057 position = valid_v_range_;
2058
2059 v_scrollbar_->SetValue(position);
2060
2061 PP_Rect loc;
2062 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2063 if (IsOverlayScrollbar())
2064 loc.point.x -= scrollbar_thickness;
2065 loc.point.y = 0;
2066 loc.size.width = scrollbar_thickness;
2067 loc.size.height = height_dip;
2068 v_scrollbar_->SetLocation(loc);
2069 v_scrollbar_->SetDocumentSize(doc_height_dip);
2070
2071 #ifdef ENABLE_THUMBNAILS
2072 thumbnails_pos = position;
2073 thumbnails_total = doc_height - height;
2074 #endif
2075 }
2076
2077 if (h_scrollbar_.get()) {
2078 h_scrollbar_->SetScale(device_scale_);
2079 available_area_.set_height(
2080 std::max(0, plugin_size_.height() -
2081 GetScaled(GetScrollbarReservedThickness())));
2082
2083 int width_dip = plugin_dip_size_.width();
2084
2085 // See note above.
2086 #if defined(OS_MACOSX)
2087 if ((base::mac::IsOSSnowLeopard() && full_) ||
2088 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2089 #else
2090 if (v_scrollbar_.get()) {
2091 #endif
2092 width_dip -= GetScrollbarThickness();
2093 }
2094 int32 doc_width_dip =
2095 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2096 #if defined(OS_MACOSX)
2097 // See comment in the above if (v_scrollbar_.get()) block.
2098 if (full_ && !v_scrollbar_.get())
2099 doc_width_dip -= GetScrollbarThickness();
2100 #endif // defined(OS_MACOSX)
2101
2102 int32 position;
2103 position = h_scrollbar_->GetValue();
2104 position = static_cast<int>(position * zoom_ / old_zoom);
2105 position = std::min(position, doc_width_dip - width_dip);
2106
2107 h_scrollbar_->SetValue(position);
2108
2109 PP_Rect loc;
2110 loc.point.x = 0;
2111 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2112 if (IsOverlayScrollbar())
2113 loc.point.y -= scrollbar_thickness;
2114 loc.size.width = width_dip;
2115 loc.size.height = scrollbar_thickness;
2116 h_scrollbar_->SetLocation(loc);
2117 h_scrollbar_->SetDocumentSize(doc_width_dip);
2118 }
2119
2120 int doc_width = GetDocumentPixelWidth();
2121 if (doc_width < available_area_.width()) {
2122 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2123 available_area_.set_width(doc_width);
2124 }
2125 int doc_height = GetDocumentPixelHeight();
2126 if (doc_height < available_area_.height()) {
2127 available_area_.set_height(doc_height);
2128 }
2129
2130 // We'll invalidate the entire plugin anyways.
2131 UpdateToolbarPosition(false);
2132 UpdateProgressBarPosition(false);
2133 UpdatePageIndicatorPosition(false);
2134
2135 #ifdef ENABLE_THUMBNAILS
2136 // Update thumbnail control position.
2137 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2138 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2139 GetScaled(kThumbnailsWidth), plugin_size_.height());
2140 if (v_scrollbar_.get())
2141 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2142 if (h_scrollbar_.get())
2143 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2144 thumbnails_.SetRect(thumbnails_rc, false);
2145 #endif
2146
2147 CalculateBackgroundParts();
2148 engine_->PageOffsetUpdated(available_area_.point());
2149 engine_->PluginSizeUpdated(available_area_.size());
2150
2151 if (!document_size_.GetArea())
2152 return;
2153 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2154
2155 // Run the plugin size change callback asynchronously. This function can be
2156 // invoked by a layout change which should not re-enter into JS synchronously.
2157 pp::CompletionCallback callback =
2158 callback_factory_.NewCallback(&Instance::RunCallback,
2159 on_plugin_size_changed_callback_);
2160 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2161 }
2162
2163 void Instance::RunCallback(int32_t, pp::Var callback) {
2164 if (callback.is_string())
2165 ExecuteScript(callback);
2166 }
2167
2168 void Instance::CreateHorizontalScrollbar() {
2169 if (h_scrollbar_.get())
2170 return;
2171
2172 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2173 }
2174
2175 void Instance::CreateVerticalScrollbar() {
2176 if (v_scrollbar_.get())
2177 return;
2178
2179 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2180 }
2181
2182 void Instance::DestroyHorizontalScrollbar() {
2183 if (!h_scrollbar_.get())
2184 return;
2185 if (h_scrollbar_->GetValue())
2186 engine_->ScrolledToXPosition(0);
2187 h_scrollbar_.reset();
2188 }
2189
2190 void Instance::DestroyVerticalScrollbar() {
2191 if (!v_scrollbar_.get())
2192 return;
2193 if (v_scrollbar_->GetValue())
2194 engine_->ScrolledToYPosition(0);
2195 v_scrollbar_.reset();
2196 page_indicator_.Show(false, true);
2197 }
2198
2199 int Instance::GetScrollbarThickness() {
2200 if (scrollbar_thickness_ == -1) {
2201 pp::Scrollbar_Dev temp_scrollbar(this, false);
2202 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2203 scrollbar_reserved_thickness_ =
2204 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2205 }
2206
2207 return scrollbar_thickness_;
2208 }
2209
2210 int Instance::GetScrollbarReservedThickness() {
2211 GetScrollbarThickness();
2212 return scrollbar_reserved_thickness_;
2213 }
2214
2215 bool Instance::IsOverlayScrollbar() {
2216 return GetScrollbarReservedThickness() == 0;
2217 }
2218
2219 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2220 toolbar_.reset(new FadingControls());
2221
2222 DCHECK(tb_info);
2223 DCHECK(size >= 0);
2224
2225 // Remember the current toolbar information in case we need to recreate the
2226 // images later.
2227 current_tb_info_ = tb_info;
2228 current_tb_info_size_ = size;
2229
2230 int max_height = 0;
2231 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2232 ScalePoint(device_scale_, &origin);
2233
2234 std::list<Button*> buttons;
2235 for (size_t i = 0; i < size; i++) {
2236 Button* btn = new Button;
2237 pp::ImageData normal_face =
2238 CreateResourceImage(tb_info[i].normal);
2239 btn->CreateButton(tb_info[i].id,
2240 origin,
2241 true,
2242 toolbar_.get(),
2243 tb_info[i].style,
2244 normal_face,
2245 CreateResourceImage(tb_info[i].highlighted),
2246 CreateResourceImage(tb_info[i].pressed));
2247 buttons.push_back(btn);
2248
2249 origin += pp::Point(normal_face.size().width(), 0);
2250 max_height = std::max(max_height, normal_face.size().height());
2251 }
2252
2253 pp::Rect rc_toolbar(0, 0,
2254 origin.x() + GetToolbarRightOffset(),
2255 origin.y() + max_height + GetToolbarBottomOffset());
2256 toolbar_->CreateFadingControls(
2257 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2258
2259 std::list<Button*>::iterator iter;
2260 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2261 toolbar_->AddControl(*iter);
2262 }
2263 }
2264
2265 int Instance::GetToolbarRightOffset() {
2266 int scrollbar_thickness = GetScrollbarThickness();
2267 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2268 }
2269
2270 int Instance::GetToolbarBottomOffset() {
2271 int scrollbar_thickness = GetScrollbarThickness();
2272 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2273 }
2274
2275 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2276 std::vector<pp::ImageData> num_images(10);
2277 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2278 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2279 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2280 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2281 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2282 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2283 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2284 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2285 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2286 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2287 return num_images;
2288 }
2289
2290 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2291 pp::ImageData* background) {
2292 std::vector<pp::ImageData> result(9);
2293 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2294 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2295 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2296 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2297 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2298 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2299 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2300 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2301 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2302 *background = CreateResourceImage(
2303 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2304 return result;
2305 }
2306
2307 void Instance::CreatePageIndicator(bool always_visible) {
2308 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2309 number_image_generator(), always_visible);
2310 ConfigurePageIndicator();
2311 }
2312
2313 void Instance::ConfigurePageIndicator() {
2314 pp::ImageData background =
2315 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2316 page_indicator_.Configure(pp::Point(), background);
2317 }
2318
2319 void Instance::CreateProgressBar() {
2320 pp::ImageData background;
2321 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2322 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2323 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2324 device_scale_, images, background, text);
2325 }
2326
2327 void Instance::ConfigureProgressBar() {
2328 pp::ImageData background;
2329 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2330 progress_bar_.Reconfigure(background, images, device_scale_);
2331 }
2332
2333 void Instance::CreateThumbnails() {
2334 thumbnails_.CreateThumbnailControl(
2335 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2336 number_image_generator());
2337 }
2338
2339 void Instance::LoadUrl(const std::string& url) {
2340 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2341 }
2342
2343 void Instance::LoadPreviewUrl(const std::string& url) {
2344 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2345 }
2346
2347 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2348 void (Instance::* method)(int32_t)) {
2349 pp::URLRequestInfo request(this);
2350 request.SetURL(url);
2351 request.SetMethod("GET");
2352
2353 *loader = CreateURLLoaderInternal();
2354 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2355 int rv = loader->Open(request, callback);
2356 if (rv != PP_OK_COMPLETIONPENDING)
2357 callback.Run(rv);
2358 }
2359
2360 pp::URLLoader Instance::CreateURLLoaderInternal() {
2361 pp::URLLoader loader(this);
2362
2363 const PPB_URLLoaderTrusted* trusted_interface =
2364 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2365 pp::Module::Get()->GetBrowserInterface(
2366 PPB_URLLOADERTRUSTED_INTERFACE));
2367 if (trusted_interface)
2368 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2369 return loader;
2370 }
2371
2372 int Instance::GetInitialPage(const std::string& url) {
2373 size_t found_idx = url.find('#');
2374 if (found_idx == std::string::npos)
2375 return -1;
2376
2377 const std::string& ref = url.substr(found_idx + 1);
2378 std::vector<std::string> fragments;
2379 Tokenize(ref, kDelimiters, &fragments);
2380
2381 // Page number to return, zero-based.
2382 int page = -1;
2383
2384 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2385 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2386 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2387 return engine_->GetNamedDestinationPage(fragments[0]);
2388
2389 for (size_t i = 0; i < fragments.size(); ++i) {
2390 std::vector<std::string> key_value;
2391 base::SplitString(fragments[i], '=', &key_value);
2392 if (key_value.size() != 2)
2393 continue;
2394 const std::string& key = key_value[0];
2395 const std::string& value = key_value[1];
2396
2397 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2398 // |page_value| is 1-based.
2399 int page_value = -1;
2400 if (base::StringToInt(value, &page_value) && page_value > 0)
2401 page = page_value - 1;
2402 continue;
2403 }
2404 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2405 // |page_value| is 0-based.
2406 int page_value = engine_->GetNamedDestinationPage(value);
2407 if (page_value >= 0)
2408 page = page_value;
2409 continue;
2410 }
2411 }
2412 return page;
2413 }
2414
2415 void Instance::UpdateToolbarPosition(bool invalidate) {
2416 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2417 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2418 GetScaled(kToolbarFadingOffsetLeft);
2419 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2420 GetScaled(kToolbarFadingOffsetBottom);
2421
2422 // Update toolbar position
2423 if (plugin_size_.width() < min_toolbar_width ||
2424 plugin_size_.height() < min_toolbar_height) {
2425 // Disable toolbar if it does not fit on the screen.
2426 toolbar_->Show(false, invalidate);
2427 } else {
2428 pp::Point offset(
2429 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2430 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2431 toolbar_->MoveBy(offset, invalidate);
2432
2433 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2434 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2435 toolbar_->Show(painted_first_page_, invalidate);
2436 }
2437 }
2438
2439 void Instance::UpdateProgressBarPosition(bool invalidate) {
2440 // TODO(gene): verify we don't overlap with toolbar.
2441 int scrollbar_thickness = GetScrollbarThickness();
2442 pp::Point progress_origin(
2443 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2444 plugin_size_.height() - progress_bar_.rect().height() -
2445 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2446 progress_bar_.MoveTo(progress_origin, invalidate);
2447 }
2448
2449 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2450 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2451 pp::Point origin(
2452 plugin_size_.width() - page_indicator_.rect().width() -
2453 GetScaled(GetScrollbarReservedThickness()),
2454 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2455 doc_height, plugin_size_.height()));
2456 page_indicator_.MoveTo(origin, invalidate);
2457 }
2458
2459 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2460 double old_zoom = zoom_;
2461
2462 zoom_mode_ = zoom_mode;
2463 if (zoom_mode_ == ZOOM_SCALE)
2464 zoom_ = scale;
2465 UpdateZoomScale();
2466
2467 engine_->ZoomUpdated(zoom_ * device_scale_);
2468 OnGeometryChanged(old_zoom, device_scale_);
2469
2470 // If fit-to-height, snap to the beginning of the most visible page.
2471 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2472 ScrollToPage(engine_->GetMostVisiblePage());
2473 }
2474
2475 // Update sticky buttons to the current zoom style.
2476 Button* ftp_btn = static_cast<Button*>(
2477 toolbar_->GetControl(kFitToPageButtonId));
2478 Button* ftw_btn = static_cast<Button*>(
2479 toolbar_->GetControl(kFitToWidthButtonId));
2480 switch (zoom_mode_) {
2481 case ZOOM_FIT_TO_PAGE:
2482 ftp_btn->SetPressedState(true);
2483 ftw_btn->SetPressedState(false);
2484 break;
2485 case ZOOM_FIT_TO_WIDTH:
2486 ftw_btn->SetPressedState(true);
2487 ftp_btn->SetPressedState(false);
2488 break;
2489 default:
2490 ftw_btn->SetPressedState(false);
2491 ftp_btn->SetPressedState(false);
2492 }
2493 }
2494
2495 void Instance::UpdateZoomScale() {
2496 switch (zoom_mode_) {
2497 case ZOOM_SCALE:
2498 break; // Keep current scale.
2499 case ZOOM_FIT_TO_PAGE: {
2500 int page_num = engine_->GetFirstVisiblePage();
2501 if (page_num == -1)
2502 break;
2503 pp::Rect rc = engine_->GetPageRect(page_num);
2504 if (!rc.height())
2505 break;
2506 // Calculate fit to width zoom level.
2507 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2508 GetScrollbarReservedThickness()) / document_size_.width();
2509 // Calculate fit to height zoom level. If document will not fit
2510 // horizontally, adjust zoom level to allow space for horizontal
2511 // scrollbar.
2512 double fth_zoom =
2513 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2514 if (fth_zoom * document_size_.width() >
2515 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2516 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2517 - GetScrollbarReservedThickness()) / rc.height();
2518 zoom_ = std::min(ftw_zoom, fth_zoom);
2519 } break;
2520 case ZOOM_FIT_TO_WIDTH:
2521 case ZOOM_AUTO:
2522 if (!document_size_.width())
2523 break;
2524 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2525 GetScrollbarReservedThickness()) / document_size_.width();
2526 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2527 zoom_ = 1.0;
2528 break;
2529 }
2530 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2531 }
2532
2533 double Instance::CalculateZoom(uint32 control_id) const {
2534 if (control_id == kZoomInButtonId) {
2535 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2536 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2537 if (current_zoom - content::kEpsilon > zoom_)
2538 return current_zoom;
2539 }
2540 } else {
2541 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2542 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2543 if (current_zoom + content::kEpsilon < zoom_)
2544 return current_zoom;
2545 }
2546 }
2547 return zoom_;
2548 }
2549
2550 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2551 pp::ImageData resource_data;
2552 if (hidpi_enabled_) {
2553 resource_data =
2554 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2555 }
2556
2557 return resource_data.data() ? resource_data
2558 : pp::PDF::GetResourceImage(this, image_id);
2559 }
2560
2561 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2562 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2563 if (!rv.is_string())
2564 return std::string();
2565
2566 return rv.AsString();
2567 }
2568
2569 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2570 std::string str(GetLocalizedString(id));
2571
2572 pp::FontDescription_Dev description;
2573 description.set_family(PP_FONTFAMILY_SANSSERIF);
2574 description.set_size(kMessageTextSize * device_scale_);
2575 pp::Font_Dev font(this, description);
2576 int length = font.MeasureSimpleText(str);
2577 pp::Point point(top_center);
2578 point.set_x(point.x() - length / 2);
2579 DCHECK(!image_data_.is_null());
2580 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2581 }
2582
2583 void Instance::SetPrintPreviewMode(int page_count) {
2584 if (!IsPrintPreview() || page_count <= 0) {
2585 print_preview_page_count_ = 0;
2586 return;
2587 }
2588
2589 print_preview_page_count_ = page_count;
2590 ScrollToPage(0);
2591 engine_->AppendBlankPages(print_preview_page_count_);
2592 if (preview_pages_info_.size() > 0)
2593 LoadAvailablePreviewPage();
2594 }
2595
2596 bool Instance::IsPrintPreview() {
2597 return IsPrintPreviewUrl(url_);
2598 }
2599
2600 int Instance::GetPageNumberToDisplay() {
2601 int page = engine_->GetMostVisiblePage();
2602 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2603 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2604 return print_preview_page_numbers_[page];
2605 }
2606 return page + 1;
2607 }
2608
2609 void Instance::ProcessPreviewPageInfo(const std::string& url,
2610 int dst_page_index) {
2611 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2612 return;
2613
2614 int src_page_index = ExtractPrintPreviewPageIndex(url);
2615 if (src_page_index < 1)
2616 return;
2617
2618 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2619 LoadAvailablePreviewPage();
2620 }
2621
2622 void Instance::LoadAvailablePreviewPage() {
2623 if (preview_pages_info_.size() <= 0)
2624 return;
2625
2626 std::string url = preview_pages_info_.front().first;
2627 int dst_page_index = preview_pages_info_.front().second;
2628 int src_page_index = ExtractPrintPreviewPageIndex(url);
2629 if (src_page_index < 1 ||
2630 dst_page_index >= print_preview_page_count_ ||
2631 preview_document_load_state_ == LOAD_STATE_LOADING) {
2632 return;
2633 }
2634
2635 preview_document_load_state_ = LOAD_STATE_LOADING;
2636 LoadPreviewUrl(url);
2637 }
2638
2639 void Instance::EnableAutoscroll(const pp::Point& origin) {
2640 if (is_autoscroll_)
2641 return;
2642
2643 pp::Size client_size = plugin_size_;
2644 if (v_scrollbar_.get())
2645 client_size.Enlarge(-GetScrollbarThickness(), 0);
2646 if (h_scrollbar_.get())
2647 client_size.Enlarge(0, -GetScrollbarThickness());
2648
2649 // Do not allow autoscroll if client area is too small.
2650 if (autoscroll_anchor_.size().width() > client_size.width() ||
2651 autoscroll_anchor_.size().height() > client_size.height())
2652 return;
2653
2654 autoscroll_rect_ = pp::Rect(
2655 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2656 origin.y() - autoscroll_anchor_.size().height() / 2),
2657 autoscroll_anchor_.size());
2658
2659 // Make sure autoscroll anchor is in the client area.
2660 if (autoscroll_rect_.right() > client_size.width()) {
2661 autoscroll_rect_.set_x(
2662 client_size.width() - autoscroll_anchor_.size().width());
2663 }
2664 if (autoscroll_rect_.bottom() > client_size.height()) {
2665 autoscroll_rect_.set_y(
2666 client_size.height() - autoscroll_anchor_.size().height());
2667 }
2668
2669 if (autoscroll_rect_.x() < 0)
2670 autoscroll_rect_.set_x(0);
2671 if (autoscroll_rect_.y() < 0)
2672 autoscroll_rect_.set_y(0);
2673
2674 is_autoscroll_ = true;
2675 Invalidate(kAutoScrollId, autoscroll_rect_);
2676
2677 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2678 }
2679
2680 void Instance::DisableAutoscroll() {
2681 if (is_autoscroll_) {
2682 is_autoscroll_ = false;
2683 Invalidate(kAutoScrollId, autoscroll_rect_);
2684 }
2685 }
2686
2687 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2688 // Scroll only if mouse pointer is outside of the anchor area.
2689 if (autoscroll_rect_.Contains(mouse_pos)) {
2690 autoscroll_x_ = 0;
2691 autoscroll_y_ = 0;
2692 return PP_CURSORTYPE_MIDDLEPANNING;
2693 }
2694
2695 // Relative position to the center of anchor area.
2696 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2697
2698 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2699 double angle = atan2(static_cast<double>(rel_pos.y()),
2700 static_cast<double>(rel_pos.x()));
2701
2702 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2703 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2704
2705 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2706 // so negative angle represent north direction.
2707 if (angle < - (M_PI * 7.0 / 8.0)) {
2708 // going west
2709 return PP_CURSORTYPE_WESTPANNING;
2710 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2711 // going north-west
2712 return PP_CURSORTYPE_NORTHWESTPANNING;
2713 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2714 // going north.
2715 return PP_CURSORTYPE_NORTHPANNING;
2716 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2717 // going north-east
2718 return PP_CURSORTYPE_NORTHEASTPANNING;
2719 } else if (angle < M_PI * 1.0 / 8.0) {
2720 // going east.
2721 return PP_CURSORTYPE_EASTPANNING;
2722 } else if (angle < M_PI * 3.0 / 8.0) {
2723 // going south-east
2724 return PP_CURSORTYPE_SOUTHEASTPANNING;
2725 } else if (angle < M_PI * 5.0 / 8.0) {
2726 // going south.
2727 return PP_CURSORTYPE_SOUTHPANNING;
2728 } else if (angle < M_PI * 7.0 / 8.0) {
2729 // going south-west
2730 return PP_CURSORTYPE_SOUTHWESTPANNING;
2731 }
2732
2733 // went around the circle, going west again
2734 return PP_CURSORTYPE_WESTPANNING;
2735 }
2736
2737 void Instance::ConfigureNumberImageGenerator() {
2738 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2739 pp::ImageData number_background = CreateResourceImage(
2740 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2741 number_image_generator_->Configure(number_background,
2742 num_images,
2743 device_scale_);
2744 }
2745
2746 NumberImageGenerator* Instance::number_image_generator() {
2747 if (!number_image_generator_.get()) {
2748 number_image_generator_.reset(new NumberImageGenerator(this));
2749 ConfigureNumberImageGenerator();
2750 }
2751 return number_image_generator_.get();
2752 }
2753
2754 int Instance::GetScaled(int x) const {
2755 return static_cast<int>(x * device_scale_);
2756 }
2757
2758 void Instance::UserMetricsRecordAction(const std::string& action) {
2759 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2760 }
2761
2762 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2763 : instance_(instance) {
2764 }
2765
2766 PDFScriptableObject::~PDFScriptableObject() {
2767 }
2768
2769 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2770 return instance_->HasScriptableMethod(name, exception);
2771 }
2772
2773 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2774 const std::vector<pp::Var>& args,
2775 pp::Var* exception) {
2776 return instance_->CallScriptableMethod(method, args, exception);
2777 }
2778
2779 } // namespace chrome_pdf