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PDF Viewer - PageUp/Down don't move pdf by page size in FitToPage mode
[chromium-blink-merge.git] / pdf / instance.cc
blob4bd2f787dfec69d80534de5f9686dc5e619f32b9
1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "pdf/instance.h"
6
7 #include <algorithm> // for min()
8 #define _USE_MATH_DEFINES // for M_PI
9 #include <cmath> // for log() and pow()
10 #include <math.h>
11 #include <list>
12
13 #include "base/json/json_reader.h"
14 #include "base/json/json_writer.h"
15 #include "base/logging.h"
16 #include "base/strings/string_number_conversions.h"
17 #include "base/strings/string_split.h"
18 #include "base/strings/string_util.h"
19 #include "base/values.h"
20 #include "chrome/browser/chrome_page_zoom_constants.h"
21 #include "chrome/common/content_restriction.h"
22 #include "content/public/common/page_zoom.h"
23 #include "net/base/escape.h"
24 #include "pdf/draw_utils.h"
25 #include "pdf/number_image_generator.h"
26 #include "pdf/pdf.h"
27 #include "pdf/resource_consts.h"
28 #include "ppapi/c/dev/ppb_cursor_control_dev.h"
29 #include "ppapi/c/pp_errors.h"
30 #include "ppapi/c/pp_rect.h"
31 #include "ppapi/c/private/ppp_pdf.h"
32 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
33 #include "ppapi/cpp/core.h"
34 #include "ppapi/cpp/dev/font_dev.h"
35 #include "ppapi/cpp/dev/memory_dev.h"
36 #include "ppapi/cpp/dev/text_input_dev.h"
37 #include "ppapi/cpp/module.h"
38 #include "ppapi/cpp/point.h"
39 #include "ppapi/cpp/private/pdf.h"
40 #include "ppapi/cpp/rect.h"
41 #include "ppapi/cpp/resource.h"
42 #include "ppapi/cpp/url_request_info.h"
43 #include "ui/events/keycodes/keyboard_codes.h"
44
45 #if defined(OS_MACOSX)
46 #include "base/mac/mac_util.h"
47 #endif
48
49 namespace chrome_pdf {
50
51 struct ToolbarButtonInfo {
52 uint32 id;
53 Button::ButtonStyle style;
54 PP_ResourceImage normal;
55 PP_ResourceImage highlighted;
56 PP_ResourceImage pressed;
57 };
58
59 namespace {
60
61 // Uncomment following #define to enable thumbnails.
62 // #define ENABLE_THUMBNAILS
63
64 const uint32 kToolbarSplashTimeoutMs = 6000;
65 const uint32 kMessageTextColor = 0xFF575757;
66 const uint32 kMessageTextSize = 22;
67 const uint32 kProgressFadeTimeoutMs = 250;
68 const uint32 kProgressDelayTimeoutMs = 1000;
69 const uint32 kAutoScrollTimeoutMs = 50;
70 const double kAutoScrollFactor = 0.2;
71
72 // Javascript methods.
73 const char kJSAccessibility[] = "accessibility";
74 const char kJSDocumentLoadComplete[] = "documentLoadComplete";
75 const char kJSGetHeight[] = "getHeight";
76 const char kJSGetHorizontalScrollbarThickness[] =
77 "getHorizontalScrollbarThickness";
78 const char kJSGetPageLocationNormalized[] = "getPageLocationNormalized";
79 const char kJSGetSelectedText[] = "getSelectedText";
80 const char kJSGetVerticalScrollbarThickness[] = "getVerticalScrollbarThickness";
81 const char kJSGetWidth[] = "getWidth";
82 const char kJSGetZoomLevel[] = "getZoomLevel";
83 const char kJSGoToPage[] = "goToPage";
84 const char kJSGrayscale[] = "grayscale";
85 const char kJSLoadPreviewPage[] = "loadPreviewPage";
86 const char kJSOnLoad[] = "onload";
87 const char kJSOnPluginSizeChanged[] = "onPluginSizeChanged";
88 const char kJSOnScroll[] = "onScroll";
89 const char kJSPageXOffset[] = "pageXOffset";
90 const char kJSPageYOffset[] = "pageYOffset";
91 const char kJSPrintPreviewPageCount[] = "printPreviewPageCount";
92 const char kJSReload[] = "reload";
93 const char kJSRemovePrintButton[] = "removePrintButton";
94 const char kJSResetPrintPreviewUrl[] = "resetPrintPreviewUrl";
95 const char kJSSendKeyEvent[] = "sendKeyEvent";
96 const char kJSSetPageNumbers[] = "setPageNumbers";
97 const char kJSSetPageXOffset[] = "setPageXOffset";
98 const char kJSSetPageYOffset[] = "setPageYOffset";
99 const char kJSSetZoomLevel[] = "setZoomLevel";
100 const char kJSZoomFitToHeight[] = "fitToHeight";
101 const char kJSZoomFitToWidth[] = "fitToWidth";
102 const char kJSZoomIn[] = "zoomIn";
103 const char kJSZoomOut[] = "zoomOut";
104
105 // URL reference parameters.
106 // For more possible parameters, see RFC 3778 and the "PDF Open Parameters"
107 // document from Adobe.
108 const char kDelimiters[] = "#&";
109 const char kNamedDest[] = "nameddest";
110 const char kPage[] = "page";
111
112 const char kChromePrint[] = "chrome://print/";
113
114 // Dictionary Value key names for the document accessibility info
115 const char kAccessibleNumberOfPages[] = "numberOfPages";
116 const char kAccessibleLoaded[] = "loaded";
117 const char kAccessibleCopyable[] = "copyable";
118
119 const ToolbarButtonInfo kPDFToolbarButtons[] = {
120 { kFitToPageButtonId, Button::BUTTON_STATE,
121 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
122 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
123 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
124 { kFitToWidthButtonId, Button::BUTTON_STATE,
125 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
126 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
127 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
128 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
129 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
130 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
131 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
132 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
133 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
134 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
135 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
136 { kSaveButtonId, Button::BUTTON_CLICKABLE,
137 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
138 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
139 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
140 { kPrintButtonId, Button::BUTTON_CLICKABLE,
141 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT,
142 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER,
143 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED },
144 };
145
146 const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = {
147 { kFitToPageButtonId, Button::BUTTON_STATE,
148 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
149 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
150 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
151 { kFitToWidthButtonId, Button::BUTTON_STATE,
152 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
153 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
154 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
155 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
156 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
157 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
158 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
159 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
160 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN,
161 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER,
162 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED },
163 { kSaveButtonId, Button::BUTTON_CLICKABLE,
164 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE,
165 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER,
166 PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED },
167 { kPrintButtonId, Button::BUTTON_CLICKABLE,
168 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
169 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED,
170 PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED }
171 };
172
173 const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = {
174 { kFitToPageButtonId, Button::BUTTON_STATE,
175 PP_RESOURCEIMAGE_PDF_BUTTON_FTP,
176 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER,
177 PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED },
178 { kFitToWidthButtonId, Button::BUTTON_STATE,
179 PP_RESOURCEIMAGE_PDF_BUTTON_FTW,
180 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER,
181 PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED },
182 { kZoomOutButtonId, Button::BUTTON_CLICKABLE,
183 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT,
184 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER,
185 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED },
186 { kZoomInButtonId, Button::BUTTON_CLICKABLE,
187 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END,
188 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER,
189 PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED },
190 };
191
192 static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1;
193
194 PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) {
195 pp::Var var;
196 void* object =
197 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
198 if (object)
199 var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point));
200 return var.Detach();
201 }
202
203 void Transform(PP_Instance instance, PP_PrivatePageTransformType type) {
204 void* object =
205 pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface);
206 if (object) {
207 Instance* obj_instance = static_cast<Instance*>(object);
208 switch (type) {
209 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW:
210 obj_instance->RotateClockwise();
211 break;
212 case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW:
213 obj_instance->RotateCounterclockwise();
214 break;
215 }
216 }
217 }
218
219 const PPP_Pdf ppp_private = {
220 &GetLinkAtPosition,
221 &Transform
222 };
223
224 int ExtractPrintPreviewPageIndex(const std::string& src_url) {
225 // Sample |src_url| format: chrome://print/id/page_index/print.pdf
226 std::vector<std::string> url_substr;
227 base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr);
228 if (url_substr.size() != 3)
229 return -1;
230
231 if (url_substr[2] != "print.pdf")
232 return -1;
233
234 int page_index = 0;
235 if (!base::StringToInt(url_substr[1], &page_index))
236 return -1;
237 return page_index;
238 }
239
240 bool IsPrintPreviewUrl(const std::string& url) {
241 return url.substr(0, strlen(kChromePrint)) == kChromePrint;
242 }
243
244 void ScalePoint(float scale, pp::Point* point) {
245 point->set_x(static_cast<int>(point->x() * scale));
246 point->set_y(static_cast<int>(point->y() * scale));
247 }
248
249 void ScaleRect(float scale, pp::Rect* rect) {
250 int left = static_cast<int>(floorf(rect->x() * scale));
251 int top = static_cast<int>(floorf(rect->y() * scale));
252 int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale));
253 int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale));
254 rect->SetRect(left, top, right - left, bottom - top);
255 }
256
257 template<class T>
258 T ClipToRange(T value, T lower_boundary, T upper_boundary) {
259 DCHECK(lower_boundary <= upper_boundary);
260 return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary));
261 }
262
263 } // namespace
264
265 Instance::Instance(PP_Instance instance)
266 : pp::InstancePrivate(instance),
267 pp::Find_Private(this),
268 pp::Printing_Dev(this),
269 pp::Selection_Dev(this),
270 pp::WidgetClient_Dev(this),
271 pp::Zoom_Dev(this),
272 cursor_(PP_CURSORTYPE_POINTER),
273 timer_pending_(false),
274 current_timer_id_(0),
275 zoom_(1.0),
276 device_scale_(1.0),
277 printing_enabled_(true),
278 hidpi_enabled_(false),
279 full_(IsFullFrame()),
280 zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE),
281 did_call_start_loading_(false),
282 is_autoscroll_(false),
283 scrollbar_thickness_(-1),
284 scrollbar_reserved_thickness_(-1),
285 current_tb_info_(NULL),
286 current_tb_info_size_(0),
287 paint_manager_(this, this, true),
288 delayed_progress_timer_id_(0),
289 first_paint_(true),
290 painted_first_page_(false),
291 show_page_indicator_(false),
292 document_load_state_(LOAD_STATE_LOADING),
293 preview_document_load_state_(LOAD_STATE_COMPLETE),
294 told_browser_about_unsupported_feature_(false),
295 print_preview_page_count_(0) {
296 loader_factory_.Initialize(this);
297 timer_factory_.Initialize(this);
298 form_factory_.Initialize(this);
299 callback_factory_.Initialize(this);
300 engine_.reset(PDFEngine::Create(this));
301 pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private);
302 AddPerInstanceObject(kPPPPdfInterface, this);
303
304 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE);
305 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL);
306 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD);
307 RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH);
308 }
309
310 Instance::~Instance() {
311 if (timer_pending_) {
312 timer_factory_.CancelAll();
313 timer_pending_ = false;
314 }
315 // The engine may try to access this instance during its destruction.
316 // Make sure this happens early while the instance is still intact.
317 engine_.reset();
318 RemovePerInstanceObject(kPPPPdfInterface, this);
319 }
320
321 bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) {
322 // For now, we hide HiDPI support behind a flag.
323 if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI))
324 hidpi_enabled_ = true;
325
326 printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING);
327 if (printing_enabled_) {
328 CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons));
329 } else {
330 CreateToolbar(kPDFNoPrintToolbarButtons,
331 arraysize(kPDFNoPrintToolbarButtons));
332 }
333
334 CreateProgressBar();
335
336 // Load autoscroll anchor image.
337 autoscroll_anchor_ =
338 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
339
340 #ifdef ENABLE_THUMBNAILS
341 CreateThumbnails();
342 #endif
343 const char* url = NULL;
344 for (uint32_t i = 0; i < argc; ++i) {
345 if (strcmp(argn[i], "src") == 0) {
346 url = argv[i];
347 break;
348 }
349 }
350
351 if (!url)
352 return false;
353
354 CreatePageIndicator(IsPrintPreviewUrl(url));
355
356 if (!full_) {
357 // For PDFs embedded in a frame, we don't get the data automatically like we
358 // do for full-frame loads. Start loading the data manually.
359 LoadUrl(url);
360 } else {
361 DCHECK(!did_call_start_loading_);
362 pp::PDF::DidStartLoading(this);
363 did_call_start_loading_ = true;
364 }
365
366 ZoomLimitsChanged(kMinZoom, kMaxZoom);
367
368 text_input_.reset(new pp::TextInput_Dev(this));
369
370 url_ = url;
371 return engine_->New(url);
372 }
373
374 bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) {
375 delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId,
376 kProgressDelayTimeoutMs);
377 return engine_->HandleDocumentLoad(loader);
378 }
379
380 bool Instance::HandleInputEvent(const pp::InputEvent& event) {
381 // To simplify things, convert the event into device coordinates if it is
382 // a mouse event.
383 pp::InputEvent event_device_res(event);
384 {
385 pp::MouseInputEvent mouse_event(event);
386 if (!mouse_event.is_null()) {
387 pp::Point point = mouse_event.GetPosition();
388 pp::Point movement = mouse_event.GetMovement();
389 ScalePoint(device_scale_, &point);
390 ScalePoint(device_scale_, &movement);
391 mouse_event = pp::MouseInputEvent(
392 this,
393 event.GetType(),
394 event.GetTimeStamp(),
395 event.GetModifiers(),
396 mouse_event.GetButton(),
397 point,
398 mouse_event.GetClickCount(),
399 movement);
400 event_device_res = mouse_event;
401 }
402 }
403
404 // Check if we need to go to autoscroll mode.
405 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
406 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) {
407 pp::MouseInputEvent mouse_event(event_device_res);
408 pp::Point pos = mouse_event.GetPosition();
409 EnableAutoscroll(pos);
410 UpdateCursor(CalculateAutoscroll(pos));
411 return true;
412 } else {
413 // Quit autoscrolling on any other event.
414 DisableAutoscroll();
415 }
416
417 #ifdef ENABLE_THUMBNAILS
418 if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE)
419 thumbnails_.SlideOut();
420
421 if (thumbnails_.HandleEvent(event_device_res))
422 return true;
423 #endif
424
425 if (toolbar_->HandleEvent(event_device_res))
426 return true;
427
428 #ifdef ENABLE_THUMBNAILS
429 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) {
430 pp::MouseInputEvent mouse_event(event);
431 pp::Point pt = mouse_event.GetPosition();
432 pp::Rect v_scrollbar_rc;
433 v_scrollbar_->GetLocation(&v_scrollbar_rc);
434 // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208)
435 // in the webkit that makes event.u.mouse.button
436 // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed.
437 // To work around this issue we use modifier for now, and will switch
438 // to button once the bug is fixed and webkit got merged back to our tree.
439 if (v_scrollbar_rc.Contains(pt) &&
440 (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) {
441 thumbnails_.SlideIn();
442 }
443
444 // When scrollbar is in the scrolling mode we should display thumbnails
445 // even the mouse is outside the thumbnail and scrollbar areas.
446 // If mouse is outside plugin area, we are still getting mouse move events
447 // while scrolling. See bug description for details:
448 // http://code.google.com/p/chromium/issues/detail?id=56444
449 if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() &&
450 !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) &&
451 !thumbnails_.rect().Contains(pt)) {
452 thumbnails_.SlideOut();
453 }
454 }
455 #endif
456
457 // Need to pass the event to the engine first, since if we're over an edit
458 // control we want it to get keyboard events (like space) instead of the
459 // scrollbar.
460 // TODO: will have to offset the mouse coordinates once we support bidi and
461 // there could be scrollbars on the left.
462 pp::InputEvent offset_event(event_device_res);
463 bool try_engine_first = true;
464 switch (offset_event.GetType()) {
465 case PP_INPUTEVENT_TYPE_MOUSEDOWN:
466 case PP_INPUTEVENT_TYPE_MOUSEUP:
467 case PP_INPUTEVENT_TYPE_MOUSEMOVE:
468 case PP_INPUTEVENT_TYPE_MOUSEENTER:
469 case PP_INPUTEVENT_TYPE_MOUSELEAVE: {
470 pp::MouseInputEvent mouse_event(event_device_res);
471 pp::MouseInputEvent mouse_event_dip(event);
472 pp::Point point = mouse_event.GetPosition();
473 point.set_x(point.x() - available_area_.x());
474 offset_event = pp::MouseInputEvent(
475 this,
476 event.GetType(),
477 event.GetTimeStamp(),
478 event.GetModifiers(),
479 mouse_event.GetButton(),
480 point,
481 mouse_event.GetClickCount(),
482 mouse_event.GetMovement());
483 if (!engine_->IsSelecting()) {
484 if (!IsOverlayScrollbar() &&
485 !available_area_.Contains(mouse_event.GetPosition())) {
486 try_engine_first = false;
487 } else if (IsOverlayScrollbar()) {
488 pp::Rect temp;
489 if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) &&
490 temp.Contains(mouse_event_dip.GetPosition())) ||
491 (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) &&
492 temp.Contains(mouse_event_dip.GetPosition()))) {
493 try_engine_first = false;
494 }
495 }
496 }
497 break;
498 }
499 default:
500 break;
501 }
502 if (try_engine_first && engine_->HandleEvent(offset_event))
503 return true;
504
505 // Left/Right arrows should scroll to the beginning of the Prev/Next page if
506 // there is no horizontal scroll bar.
507 // If fit-to-height, PgDown/PgUp should scroll to the beginning of the
508 // Prev/Next page. Spacebar / shift+spacebar should do the same.
509 if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
510 pp::KeyboardInputEvent keyboard_event(event);
511 bool no_h_scrollbar = !h_scrollbar_.get();
512 uint32_t key_code = keyboard_event.GetKeyCode();
513 bool page_down = no_h_scrollbar && key_code == ui::VKEY_RIGHT;
514 bool page_up = no_h_scrollbar && key_code == ui::VKEY_LEFT;
515 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
516 bool has_shift =
517 keyboard_event.GetModifiers() & PP_INPUTEVENT_MODIFIER_SHIFTKEY;
518 bool key_is_space = key_code == ui::VKEY_SPACE;
519 page_down |= key_is_space || key_code == ui::VKEY_NEXT;
520 page_up |= (key_is_space && has_shift) || (key_code == ui::VKEY_PRIOR);
521 }
522 if (page_down) {
523 int page = engine_->GetFirstVisiblePage();
524 if (page == -1)
525 return true;
526 // Engine calculates visible page including delimiter to the page size.
527 // We need to check here if the page itself is completely out of view and
528 // scroll to the next one in that case.
529 if (engine_->GetPageRect(page).bottom() * zoom_ <=
530 v_scrollbar_->GetValue())
531 page++;
532 ScrollToPage(page + 1);
533 UpdateCursor(PP_CURSORTYPE_POINTER);
534 return true;
535 } else if (page_up) {
536 int page = engine_->GetFirstVisiblePage();
537 if (page == -1)
538 return true;
539 if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue())
540 page--;
541 ScrollToPage(page);
542 UpdateCursor(PP_CURSORTYPE_POINTER);
543 return true;
544 }
545 }
546
547 if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) {
548 UpdateCursor(PP_CURSORTYPE_POINTER);
549 return true;
550 }
551
552 if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) {
553 UpdateCursor(PP_CURSORTYPE_POINTER);
554 return true;
555 }
556
557 if (timer_pending_ &&
558 (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP ||
559 event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) {
560 timer_factory_.CancelAll();
561 timer_pending_ = false;
562 } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE &&
563 engine_->IsSelecting()) {
564 bool set_timer = false;
565 pp::MouseInputEvent mouse_event(event);
566 if (v_scrollbar_.get() &&
567 (mouse_event.GetPosition().y() <= 0 ||
568 mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) {
569 v_scrollbar_->ScrollBy(
570 PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1);
571 set_timer = true;
572 }
573 if (h_scrollbar_.get() &&
574 (mouse_event.GetPosition().x() <= 0 ||
575 mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) {
576 h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE,
577 mouse_event.GetPosition().x() >= 0 ? 1: -1);
578 set_timer = true;
579 }
580
581 if (set_timer) {
582 last_mouse_event_ = pp::MouseInputEvent(event);
583
584 pp::CompletionCallback callback =
585 timer_factory_.NewCallback(&Instance::OnTimerFired);
586 pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback);
587 timer_pending_ = true;
588 }
589 }
590
591 if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) {
592 pp::KeyboardInputEvent keyboard_event(event);
593 const uint32 modifier = event.GetModifiers();
594 if (modifier & kDefaultKeyModifier) {
595 switch (keyboard_event.GetKeyCode()) {
596 case 'A':
597 engine_->SelectAll();
598 return true;
599 }
600 } else if (modifier & PP_INPUTEVENT_MODIFIER_CONTROLKEY) {
601 switch (keyboard_event.GetKeyCode()) {
602 case ui::VKEY_OEM_4:
603 // Left bracket.
604 engine_->RotateCounterclockwise();
605 return true;
606 case ui::VKEY_OEM_6:
607 // Right bracket.
608 engine_->RotateClockwise();
609 return true;
610 }
611 }
612 }
613
614 // Return true for unhandled clicks so the plugin takes focus.
615 return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN);
616 }
617
618 void Instance::DidChangeView(const pp::View& view) {
619 pp::Rect view_rect(view.GetRect());
620 float device_scale = 1.0f;
621 float old_device_scale = device_scale_;
622 if (hidpi_enabled_)
623 device_scale = view.GetDeviceScale();
624 pp::Size view_device_size(view_rect.width() * device_scale,
625 view_rect.height() * device_scale);
626 if (view_device_size == plugin_size_ && device_scale == device_scale_)
627 return; // We don't care about the position, only the size.
628
629 image_data_ = pp::ImageData();
630 device_scale_ = device_scale;
631 plugin_dip_size_ = view_rect.size();
632 plugin_size_ = view_device_size;
633
634 paint_manager_.SetSize(view_device_size, device_scale_);
635
636 image_data_ = pp::ImageData(this,
637 PP_IMAGEDATAFORMAT_BGRA_PREMUL,
638 plugin_size_,
639 false);
640 if (image_data_.is_null()) {
641 DCHECK(plugin_size_.IsEmpty());
642 return;
643 }
644
645 // View dimensions changed, disable autoscroll (if it was enabled).
646 DisableAutoscroll();
647
648 OnGeometryChanged(zoom_, old_device_scale);
649 }
650
651 pp::Var Instance::GetInstanceObject() {
652 if (instance_object_.is_undefined()) {
653 PDFScriptableObject* object = new PDFScriptableObject(this);
654 // The pp::Var takes ownership of object here.
655 instance_object_ = pp::VarPrivate(this, object);
656 }
657
658 return instance_object_;
659 }
660
661 pp::Var Instance::GetLinkAtPosition(const pp::Point& point) {
662 pp::Point offset_point(point);
663 ScalePoint(device_scale_, &offset_point);
664 offset_point.set_x(offset_point.x() - available_area_.x());
665 return engine_->GetLinkAtPosition(offset_point);
666 }
667
668 pp::Var Instance::GetSelectedText(bool html) {
669 if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY))
670 return pp::Var();
671 return engine_->GetSelectedText();
672 }
673
674 void Instance::InvalidateWidget(pp::Widget_Dev widget,
675 const pp::Rect& dirty_rect) {
676 if (v_scrollbar_.get() && *v_scrollbar_ == widget) {
677 if (!image_data_.is_null())
678 v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
679 } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) {
680 if (!image_data_.is_null())
681 h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_);
682 } else {
683 // Possible to hit this condition since sometimes the scrollbar codes posts
684 // a task to do something later, and we could have deleted our reference in
685 // the meantime.
686 return;
687 }
688
689 pp::Rect dirty_rect_scaled = dirty_rect;
690 ScaleRect(device_scale_, &dirty_rect_scaled);
691 paint_manager_.InvalidateRect(dirty_rect_scaled);
692 }
693
694 void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar,
695 uint32_t value) {
696 value = GetScaled(value);
697 if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) {
698 engine_->ScrolledToYPosition(value);
699 pp::Rect rc;
700 v_scrollbar_->GetLocation(&rc);
701 int32 doc_height = GetDocumentPixelHeight();
702 doc_height -= GetScaled(rc.height());
703 #ifdef ENABLE_THUMBNAILS
704 if (thumbnails_.visible()) {
705 thumbnails_.SetPosition(value, doc_height, true);
706 }
707 #endif
708 pp::Point origin(
709 plugin_size_.width() - page_indicator_.rect().width() -
710 GetScaled(GetScrollbarReservedThickness()),
711 page_indicator_.GetYPosition(value, doc_height, plugin_size_.height()));
712 page_indicator_.MoveTo(origin, page_indicator_.visible());
713 } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) {
714 engine_->ScrolledToXPosition(value);
715 }
716 }
717
718 void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar,
719 bool overlay) {
720 scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_;
721 OnGeometryChanged(zoom_, device_scale_);
722 }
723
724 uint32_t Instance::QuerySupportedPrintOutputFormats() {
725 return engine_->QuerySupportedPrintOutputFormats();
726 }
727
728 int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) {
729 // For us num_pages is always equal to the number of pages in the PDF
730 // document irrespective of the printable area.
731 int32_t ret = engine_->GetNumberOfPages();
732 if (!ret)
733 return 0;
734
735 uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats();
736 if ((print_settings.format & supported_formats) == 0)
737 return 0;
738
739 print_settings_.is_printing = true;
740 print_settings_.pepper_print_settings = print_settings;
741 engine_->PrintBegin();
742 return ret;
743 }
744
745 pp::Resource Instance::PrintPages(
746 const PP_PrintPageNumberRange_Dev* page_ranges,
747 uint32_t page_range_count) {
748 if (!print_settings_.is_printing)
749 return pp::Resource();
750
751 print_settings_.print_pages_called_ = true;
752 return engine_->PrintPages(page_ranges, page_range_count,
753 print_settings_.pepper_print_settings);
754 }
755
756 void Instance::PrintEnd() {
757 if (print_settings_.print_pages_called_)
758 UserMetricsRecordAction("PDF.PrintPage");
759 print_settings_.Clear();
760 engine_->PrintEnd();
761 }
762
763 bool Instance::IsPrintScalingDisabled() {
764 return !engine_->GetPrintScaling();
765 }
766
767 bool Instance::StartFind(const std::string& text, bool case_sensitive) {
768 engine_->StartFind(text.c_str(), case_sensitive);
769 return true;
770 }
771
772 void Instance::SelectFindResult(bool forward) {
773 engine_->SelectFindResult(forward);
774 }
775
776 void Instance::StopFind() {
777 engine_->StopFind();
778 }
779
780 void Instance::Zoom(double scale, bool text_only) {
781 UserMetricsRecordAction("PDF.ZoomFromBrowser");
782
783 // If the zoom level doesn't change it means that this zoom change might have
784 // been initiated by the plugin. In that case, we don't want to change the
785 // zoom mode to ZOOM_SCALE as it may have been intentionally set to
786 // ZOOM_FIT_TO_PAGE or some other value when the zoom was last changed.
787 if (scale == zoom_)
788 return;
789
790 SetZoom(ZOOM_SCALE, scale);
791 }
792
793 void Instance::ZoomChanged(double factor) {
794 if (full_)
795 Zoom_Dev::ZoomChanged(factor);
796 }
797
798 void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects,
799 std::vector<PaintManager::ReadyRect>* ready,
800 std::vector<pp::Rect>* pending) {
801 if (image_data_.is_null()) {
802 DCHECK(plugin_size_.IsEmpty());
803 return;
804 }
805 if (first_paint_) {
806 first_paint_ = false;
807 pp::Rect rect = pp::Rect(pp::Point(), plugin_size_);
808 FillRect(rect, kBackgroundColor);
809 ready->push_back(PaintManager::ReadyRect(rect, image_data_, true));
810 *pending = paint_rects;
811 return;
812 }
813
814 engine_->PrePaint();
815
816 for (size_t i = 0; i < paint_rects.size(); i++) {
817 // Intersect with plugin area since there could be pending invalidates from
818 // when the plugin area was larger.
819 pp::Rect rect =
820 paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_));
821 if (rect.IsEmpty())
822 continue;
823
824 pp::Rect pdf_rect = available_area_.Intersect(rect);
825 if (!pdf_rect.IsEmpty()) {
826 pdf_rect.Offset(available_area_.x() * -1, 0);
827
828 std::vector<pp::Rect> pdf_ready;
829 std::vector<pp::Rect> pdf_pending;
830 engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending);
831 for (size_t j = 0; j < pdf_ready.size(); ++j) {
832 pdf_ready[j].Offset(available_area_.point());
833 ready->push_back(
834 PaintManager::ReadyRect(pdf_ready[j], image_data_, false));
835 }
836 for (size_t j = 0; j < pdf_pending.size(); ++j) {
837 pdf_pending[j].Offset(available_area_.point());
838 pending->push_back(pdf_pending[j]);
839 }
840 }
841
842 for (size_t j = 0; j < background_parts_.size(); ++j) {
843 pp::Rect intersection = background_parts_[j].location.Intersect(rect);
844 if (!intersection.IsEmpty()) {
845 FillRect(intersection, background_parts_[j].color);
846 ready->push_back(
847 PaintManager::ReadyRect(intersection, image_data_, false));
848 }
849 }
850
851 if (document_load_state_ == LOAD_STATE_FAILED) {
852 pp::Point top_center;
853 top_center.set_x(plugin_size_.width() / 2);
854 top_center.set_y(plugin_size_.height() / 2);
855 DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED);
856 }
857
858 #ifdef ENABLE_THUMBNAILS
859 thumbnails_.Paint(&image_data_, rect);
860 #endif
861 }
862
863 engine_->PostPaint();
864
865 // Must paint scrollbars after the background parts, in case we have an
866 // overlay scrollbar that's over the background. We also do this in a separate
867 // loop because the scrollbar painting logic uses the signal of whether there
868 // are pending paints or not to figure out if it should draw right away or
869 // not.
870 for (size_t i = 0; i < paint_rects.size(); i++) {
871 PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending);
872 PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending);
873 }
874
875 if (progress_bar_.visible())
876 PaintOverlayControl(&progress_bar_, &image_data_, ready);
877
878 if (page_indicator_.visible())
879 PaintOverlayControl(&page_indicator_, &image_data_, ready);
880
881 if (toolbar_->current_transparency() != kTransparentAlpha)
882 PaintOverlayControl(toolbar_.get(), &image_data_, ready);
883
884 // Paint autoscroll anchor if needed.
885 if (is_autoscroll_) {
886 size_t limit = ready->size();
887 for (size_t i = 0; i < limit; i++) {
888 pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect);
889 if (!anchor_rect.IsEmpty()) {
890 pp::Rect draw_rc = pp::Rect(
891 pp::Point(anchor_rect.x() - autoscroll_rect_.x(),
892 anchor_rect.y() - autoscroll_rect_.y()),
893 anchor_rect.size());
894 // Paint autoscroll anchor.
895 AlphaBlend(autoscroll_anchor_, draw_rc,
896 &image_data_, anchor_rect.point(), kOpaqueAlpha);
897 }
898 }
899 }
900 }
901
902 void Instance::PaintOverlayControl(
903 Control* ctrl,
904 pp::ImageData* image_data,
905 std::vector<PaintManager::ReadyRect>* ready) {
906 // Make sure that we only paint overlay controls over an area that's ready,
907 // i.e. not pending. Otherwise we'll mark the control rect as ready and
908 // it'll overwrite the pdf region.
909 std::list<pp::Rect> ctrl_rects;
910 for (size_t i = 0; i < ready->size(); i++) {
911 pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect);
912 if (!rc.IsEmpty())
913 ctrl_rects.push_back(rc);
914 }
915
916 if (!ctrl_rects.empty()) {
917 ctrl->PaintMultipleRects(image_data, ctrl_rects);
918
919 std::list<pp::Rect>::iterator iter;
920 for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) {
921 ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false));
922 }
923 }
924 }
925
926 void Instance::DidOpen(int32_t result) {
927 if (result == PP_OK) {
928 engine_->HandleDocumentLoad(embed_loader_);
929 } else if (result != PP_ERROR_ABORTED) { // Can happen in tests.
930 NOTREACHED();
931 }
932 }
933
934 void Instance::DidOpenPreview(int32_t result) {
935 if (result == PP_OK) {
936 preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this)));
937 preview_engine_->HandleDocumentLoad(embed_preview_loader_);
938 } else {
939 NOTREACHED();
940 }
941 }
942
943 void Instance::PaintIfWidgetIntersects(
944 pp::Widget_Dev* widget,
945 const pp::Rect& rect,
946 std::vector<PaintManager::ReadyRect>* ready,
947 std::vector<pp::Rect>* pending) {
948 if (!widget)
949 return;
950
951 pp::Rect location;
952 if (!widget->GetLocation(&location))
953 return;
954
955 ScaleRect(device_scale_, &location);
956 location = location.Intersect(rect);
957 if (location.IsEmpty())
958 return;
959
960 if (IsOverlayScrollbar()) {
961 // If we're using overlay scrollbars, and there are pending paints under the
962 // scrollbar, don't update the scrollbar instantly. While it would be nice,
963 // we would need to double buffer the plugin area in order to make this
964 // work. This is because we'd need to always have a copy of what the pdf
965 // under the scrollbar looks like, and additionally we couldn't paint the
966 // pdf under the scrollbar if it's ready until we got the preceding flush.
967 // So in practice, it would make painting slower and introduce extra buffer
968 // copies for the general case.
969 for (size_t i = 0; i < pending->size(); ++i) {
970 if ((*pending)[i].Intersects(location))
971 return;
972 }
973
974 // Even if none of the pending paints are under the scrollbar, we never want
975 // to paint it if it's over the pdf if there are other pending paints.
976 // Otherwise different parts of the pdf plugin would display at different
977 // scroll offsets.
978 if (!pending->empty() && available_area_.Intersects(rect)) {
979 pending->push_back(location);
980 return;
981 }
982 }
983
984 pp::Rect location_dip = location;
985 ScaleRect(1.0f / device_scale_, &location_dip);
986
987 DCHECK(!image_data_.is_null());
988 widget->Paint(location_dip, &image_data_);
989
990 ready->push_back(PaintManager::ReadyRect(location, image_data_, true));
991 }
992
993 void Instance::OnTimerFired(int32_t) {
994 HandleInputEvent(last_mouse_event_);
995 }
996
997 void Instance::OnClientTimerFired(int32_t id) {
998 engine_->OnCallback(id);
999 }
1000
1001 void Instance::OnControlTimerFired(int32_t,
1002 const uint32& control_id,
1003 const uint32& timer_id) {
1004 if (control_id == toolbar_->id()) {
1005 toolbar_->OnTimerFired(timer_id);
1006 } else if (control_id == progress_bar_.id()) {
1007 if (timer_id == delayed_progress_timer_id_) {
1008 if (document_load_state_ == LOAD_STATE_LOADING &&
1009 !progress_bar_.visible()) {
1010 progress_bar_.Fade(true, kProgressFadeTimeoutMs);
1011 }
1012 delayed_progress_timer_id_ = 0;
1013 } else {
1014 progress_bar_.OnTimerFired(timer_id);
1015 }
1016 } else if (control_id == kAutoScrollId) {
1017 if (is_autoscroll_) {
1018 if (autoscroll_x_ != 0 && h_scrollbar_.get()) {
1019 h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_);
1020 }
1021 if (autoscroll_y_ != 0 && v_scrollbar_.get()) {
1022 v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_);
1023 }
1024
1025 // Reschedule timer.
1026 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
1027 }
1028 } else if (control_id == kPageIndicatorId) {
1029 page_indicator_.OnTimerFired(timer_id);
1030 }
1031 #ifdef ENABLE_THUMBNAILS
1032 else if (control_id == thumbnails_.id()) {
1033 thumbnails_.OnTimerFired(timer_id);
1034 }
1035 #endif
1036 }
1037
1038 void Instance::CalculateBackgroundParts() {
1039 background_parts_.clear();
1040 int v_scrollbar_thickness =
1041 GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1042 int h_scrollbar_thickness =
1043 GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1044 int width_without_scrollbar = std::max(
1045 plugin_size_.width() - v_scrollbar_thickness, 0);
1046 int height_without_scrollbar = std::max(
1047 plugin_size_.height() - h_scrollbar_thickness, 0);
1048 int left_width = available_area_.x();
1049 int right_start = available_area_.right();
1050 int right_width = abs(width_without_scrollbar - available_area_.right());
1051 int bottom = std::min(available_area_.bottom(), height_without_scrollbar);
1052
1053 // Add the left, right, and bottom rectangles. Note: we assume only
1054 // horizontal centering.
1055 BackgroundPart part = {
1056 pp::Rect(0, 0, left_width, bottom),
1057 kBackgroundColor
1058 };
1059 if (!part.location.IsEmpty())
1060 background_parts_.push_back(part);
1061 part.location = pp::Rect(right_start, 0, right_width, bottom);
1062 if (!part.location.IsEmpty())
1063 background_parts_.push_back(part);
1064 part.location = pp::Rect(
1065 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom);
1066 if (!part.location.IsEmpty())
1067 background_parts_.push_back(part);
1068
1069 if (h_scrollbar_thickness
1070 #if defined(OS_MACOSX)
1071 ||
1072 #else
1073 &&
1074 #endif
1075 v_scrollbar_thickness) {
1076 part.color = 0xFFFFFFFF;
1077 part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness,
1078 plugin_size_.height() - h_scrollbar_thickness,
1079 h_scrollbar_thickness,
1080 v_scrollbar_thickness);
1081 background_parts_.push_back(part);
1082 }
1083 }
1084
1085 int Instance::GetDocumentPixelWidth() const {
1086 return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_));
1087 }
1088
1089 int Instance::GetDocumentPixelHeight() const {
1090 return static_cast<int>(ceil(document_size_.height() *
1091 zoom_ *
1092 device_scale_));
1093 }
1094
1095 void Instance::FillRect(const pp::Rect& rect, uint32 color) {
1096 DCHECK(!image_data_.is_null() || rect.IsEmpty());
1097 uint32* buffer_start = static_cast<uint32*>(image_data_.data());
1098 int stride = image_data_.stride();
1099 uint32* ptr = buffer_start + rect.y() * stride / 4 + rect.x();
1100 int height = rect.height();
1101 int width = rect.width();
1102 for (int y = 0; y < height; ++y) {
1103 for (int x = 0; x < width; ++x)
1104 *(ptr + x) = color;
1105 ptr += stride / 4;
1106 }
1107 }
1108
1109 void Instance::DocumentSizeUpdated(const pp::Size& size) {
1110 document_size_ = size;
1111
1112 OnGeometryChanged(zoom_, device_scale_);
1113 }
1114
1115 void Instance::Invalidate(const pp::Rect& rect) {
1116 pp::Rect offset_rect(rect);
1117 offset_rect.Offset(available_area_.point());
1118 paint_manager_.InvalidateRect(offset_rect);
1119 }
1120
1121 void Instance::Scroll(const pp::Point& point) {
1122 pp::Rect scroll_area = available_area_;
1123 if (IsOverlayScrollbar()) {
1124 pp::Rect rc;
1125 if (h_scrollbar_.get()) {
1126 h_scrollbar_->GetLocation(&rc);
1127 ScaleRect(device_scale_, &rc);
1128 if (scroll_area.bottom() > rc.y()) {
1129 scroll_area.set_height(rc.y() - scroll_area.y());
1130 paint_manager_.InvalidateRect(rc);
1131 }
1132 }
1133 if (v_scrollbar_.get()) {
1134 v_scrollbar_->GetLocation(&rc);
1135 ScaleRect(device_scale_, &rc);
1136 if (scroll_area.right() > rc.x()) {
1137 scroll_area.set_width(rc.x() - scroll_area.x());
1138 paint_manager_.InvalidateRect(rc);
1139 }
1140 }
1141 }
1142 paint_manager_.ScrollRect(scroll_area, point);
1143
1144 if (toolbar_->current_transparency() != kTransparentAlpha)
1145 paint_manager_.InvalidateRect(toolbar_->GetControlsRect());
1146
1147 if (progress_bar_.visible())
1148 paint_manager_.InvalidateRect(progress_bar_.rect());
1149
1150 if (is_autoscroll_)
1151 paint_manager_.InvalidateRect(autoscroll_rect_);
1152
1153 if (show_page_indicator_) {
1154 page_indicator_.set_current_page(GetPageNumberToDisplay());
1155 page_indicator_.Splash();
1156 }
1157
1158 if (page_indicator_.visible())
1159 paint_manager_.InvalidateRect(page_indicator_.rect());
1160
1161 // Run the scroll callback asynchronously. This function can be invoked by a
1162 // layout change which should not re-enter into JS synchronously.
1163 pp::CompletionCallback callback =
1164 callback_factory_.NewCallback(&Instance::RunCallback,
1165 on_scroll_callback_);
1166 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1167 }
1168
1169 void Instance::ScrollToX(int position) {
1170 if (!h_scrollbar_.get()) {
1171 NOTREACHED();
1172 return;
1173 }
1174 int position_dip = static_cast<int>(position / device_scale_);
1175 h_scrollbar_->SetValue(position_dip);
1176 }
1177
1178 void Instance::ScrollToY(int position) {
1179 if (!v_scrollbar_.get()) {
1180 NOTREACHED();
1181 return;
1182 }
1183 int position_dip = static_cast<int>(position / device_scale_);
1184 v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_));
1185 }
1186
1187 void Instance::ScrollToPage(int page) {
1188 if (!v_scrollbar_.get())
1189 return;
1190
1191 if (engine_->GetNumberOfPages() == 0)
1192 return;
1193
1194 int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1);
1195 pp::Rect rect = engine_->GetPageRect(index);
1196 // If we are trying to scroll pass the last page,
1197 // scroll to the end of the last page.
1198 int position = index < page ? rect.bottom() : rect.y();
1199 ScrollToY(position * zoom_ * device_scale_);
1200 }
1201
1202 void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) {
1203 std::string url_copy(url);
1204
1205 // Empty |url_copy| is ok, and will effectively be a reload.
1206 // Skip the code below so an empty URL does not turn into "http://", which
1207 // will cause GURL to fail a DCHECK.
1208 if (!url_copy.empty()) {
1209 // If |url_copy| starts with '#', then it's for the same URL with a
1210 // different URL fragment.
1211 if (url_copy[0] == '#') {
1212 url_copy = url_ + url_copy;
1213 // Changing the href does not actually do anything when navigating in the
1214 // same tab, so do the actual page scroll here. Then fall through so the
1215 // href gets updated.
1216 if (!open_in_new_tab) {
1217 int page_number = GetInitialPage(url_copy);
1218 if (page_number >= 0)
1219 ScrollToPage(page_number);
1220 }
1221 }
1222 // If there's no scheme, add http.
1223 if (url_copy.find("://") == std::string::npos &&
1224 url_copy.find("mailto:") == std::string::npos) {
1225 url_copy = "http://" + url_copy;
1226 }
1227 // Make sure |url_copy| starts with a valid scheme.
1228 if (url_copy.find("http://") != 0 &&
1229 url_copy.find("https://") != 0 &&
1230 url_copy.find("ftp://") != 0 &&
1231 url_copy.find("file://") != 0 &&
1232 url_copy.find("mailto:") != 0) {
1233 return;
1234 }
1235 // Make sure |url_copy| is not only a scheme.
1236 if (url_copy == "http://" ||
1237 url_copy == "https://" ||
1238 url_copy == "ftp://" ||
1239 url_copy == "file://" ||
1240 url_copy == "mailto:") {
1241 return;
1242 }
1243 }
1244 if (open_in_new_tab) {
1245 GetWindowObject().Call("open", url_copy);
1246 } else {
1247 GetWindowObject().GetProperty("top").GetProperty("location").
1248 SetProperty("href", url_copy);
1249 }
1250 }
1251
1252 void Instance::UpdateCursor(PP_CursorType_Dev cursor) {
1253 if (cursor == cursor_)
1254 return;
1255 cursor_ = cursor;
1256
1257 const PPB_CursorControl_Dev* cursor_interface =
1258 reinterpret_cast<const PPB_CursorControl_Dev*>(
1259 pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE));
1260 if (!cursor_interface) {
1261 NOTREACHED();
1262 return;
1263 }
1264
1265 cursor_interface->SetCursor(
1266 pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL);
1267 }
1268
1269 void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) {
1270 if (!v_scrollbar_.get())
1271 return;
1272
1273 float inverse_scale = 1.0f / device_scale_;
1274 std::vector<pp::Rect> scaled_tickmarks = tickmarks;
1275 for (size_t i = 0; i < scaled_tickmarks.size(); i++) {
1276 ScaleRect(inverse_scale, &scaled_tickmarks[i]);
1277 }
1278
1279 v_scrollbar_->SetTickMarks(
1280 scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size());
1281 }
1282
1283 void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) {
1284 NumberOfFindResultsChanged(total, final_result);
1285 }
1286
1287 void Instance::NotifySelectedFindResultChanged(int current_find_index) {
1288 SelectedFindResultChanged(current_find_index);
1289 }
1290
1291 void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) {
1292 if (event_id == Button::EVENT_ID_BUTTON_CLICKED ||
1293 event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) {
1294 switch (control_id) {
1295 case kFitToPageButtonId:
1296 UserMetricsRecordAction("PDF.FitToPageButton");
1297 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1298 ZoomChanged(zoom_);
1299 break;
1300 case kFitToWidthButtonId:
1301 UserMetricsRecordAction("PDF.FitToWidthButton");
1302 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1303 ZoomChanged(zoom_);
1304 break;
1305 case kZoomOutButtonId:
1306 case kZoomInButtonId:
1307 UserMetricsRecordAction(control_id == kZoomOutButtonId ?
1308 "PDF.ZoomOutButton" : "PDF.ZoomInButton");
1309 SetZoom(ZOOM_SCALE, CalculateZoom(control_id));
1310 ZoomChanged(zoom_);
1311 break;
1312 case kSaveButtonId:
1313 UserMetricsRecordAction("PDF.SaveButton");
1314 SaveAs();
1315 break;
1316 case kPrintButtonId:
1317 UserMetricsRecordAction("PDF.PrintButton");
1318 Print();
1319 break;
1320 }
1321 }
1322 if (control_id == kThumbnailsId &&
1323 event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) {
1324 int page = *static_cast<int*>(data);
1325 pp::Rect page_rc(engine_->GetPageRect(page));
1326 ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_));
1327 }
1328 }
1329
1330 void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) {
1331 paint_manager_.InvalidateRect(rc);
1332 }
1333
1334 uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) {
1335 current_timer_id_++;
1336 pp::CompletionCallback callback =
1337 timer_factory_.NewCallback(&Instance::OnControlTimerFired,
1338 control_id,
1339 current_timer_id_);
1340 pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback);
1341 return current_timer_id_;
1342 }
1343
1344 void Instance::SetEventCapture(uint32 control_id, bool set_capture) {
1345 // TODO(gene): set event capture here.
1346 }
1347
1348 void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) {
1349 UpdateCursor(cursor_type);
1350 }
1351
1352 pp::Instance* Instance::GetInstance() {
1353 return this;
1354 }
1355
1356 void Instance::GetDocumentPassword(
1357 pp::CompletionCallbackWithOutput<pp::Var> callback) {
1358 std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD));
1359 pp::Var result = pp::PDF::ModalPromptForPassword(this, message);
1360 *callback.output() = result.pp_var();
1361 callback.Run(PP_OK);
1362 }
1363
1364 void Instance::Alert(const std::string& message) {
1365 GetWindowObject().Call("alert", message);
1366 }
1367
1368 bool Instance::Confirm(const std::string& message) {
1369 pp::Var result = GetWindowObject().Call("confirm", message);
1370 return result.is_bool() ? result.AsBool() : false;
1371 }
1372
1373 std::string Instance::Prompt(const std::string& question,
1374 const std::string& default_answer) {
1375 pp::Var result = GetWindowObject().Call("prompt", question, default_answer);
1376 return result.is_string() ? result.AsString() : std::string();
1377 }
1378
1379 std::string Instance::GetURL() {
1380 return url_;
1381 }
1382
1383 void Instance::Email(const std::string& to,
1384 const std::string& cc,
1385 const std::string& bcc,
1386 const std::string& subject,
1387 const std::string& body) {
1388 std::string javascript =
1389 "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) +
1390 "?cc=" + net::EscapeUrlEncodedData(cc, false) +
1391 "&bcc=" + net::EscapeUrlEncodedData(bcc, false) +
1392 "&subject=" + net::EscapeUrlEncodedData(subject, false) +
1393 "&body=" + net::EscapeUrlEncodedData(body, false) +
1394 "';var temp = window.open(href, '_blank', " +
1395 "'width=1,height=1');if(temp) temp.close();";
1396 ExecuteScript(javascript);
1397 }
1398
1399 void Instance::Print() {
1400 if (!printing_enabled_ ||
1401 (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1402 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) {
1403 return;
1404 }
1405
1406 pp::CompletionCallback callback =
1407 callback_factory_.NewCallback(&Instance::OnPrint);
1408 pp::Module::Get()->core()->CallOnMainThread(0, callback);
1409 }
1410
1411 void Instance::OnPrint(int32_t) {
1412 pp::PDF::Print(this);
1413 }
1414
1415 void Instance::SaveAs() {
1416 pp::PDF::SaveAs(this);
1417 }
1418
1419 void Instance::SubmitForm(const std::string& url,
1420 const void* data,
1421 int length) {
1422 pp::URLRequestInfo request(this);
1423 request.SetURL(url);
1424 request.SetMethod("POST");
1425 request.AppendDataToBody(reinterpret_cast<const char*>(data), length);
1426
1427 pp::CompletionCallback callback =
1428 form_factory_.NewCallback(&Instance::FormDidOpen);
1429 form_loader_ = CreateURLLoaderInternal();
1430 int rv = form_loader_.Open(request, callback);
1431 if (rv != PP_OK_COMPLETIONPENDING)
1432 callback.Run(rv);
1433 }
1434
1435 void Instance::FormDidOpen(int32_t result) {
1436 // TODO: inform the user of success/failure.
1437 if (result != PP_OK) {
1438 NOTREACHED();
1439 }
1440 }
1441
1442 std::string Instance::ShowFileSelectionDialog() {
1443 // Seems like very low priority to implement, since the pdf has no way to get
1444 // the file data anyways. Javascript doesn't let you do this synchronously.
1445 NOTREACHED();
1446 return std::string();
1447 }
1448
1449 pp::URLLoader Instance::CreateURLLoader() {
1450 if (full_) {
1451 if (!did_call_start_loading_) {
1452 did_call_start_loading_ = true;
1453 pp::PDF::DidStartLoading(this);
1454 }
1455
1456 // Disable save and print until the document is fully loaded, since they
1457 // would generate an incomplete document. Need to do this each time we
1458 // call DidStartLoading since that resets the content restrictions.
1459 pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE |
1460 CONTENT_RESTRICTION_PRINT);
1461 }
1462
1463 return CreateURLLoaderInternal();
1464 }
1465
1466 void Instance::ScheduleCallback(int id, int delay_in_ms) {
1467 pp::CompletionCallback callback =
1468 timer_factory_.NewCallback(&Instance::OnClientTimerFired);
1469 pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id);
1470 }
1471
1472 void Instance::SearchString(const base::char16* string,
1473 const base::char16* term,
1474 bool case_sensitive,
1475 std::vector<SearchStringResult>* results) {
1476 if (!pp::PDF::IsAvailable()) {
1477 NOTREACHED();
1478 return;
1479 }
1480
1481 PP_PrivateFindResult* pp_results;
1482 int count = 0;
1483 pp::PDF::SearchString(
1484 this,
1485 reinterpret_cast<const unsigned short*>(string),
1486 reinterpret_cast<const unsigned short*>(term),
1487 case_sensitive,
1488 &pp_results,
1489 &count);
1490
1491 results->resize(count);
1492 for (int i = 0; i < count; ++i) {
1493 (*results)[i].start_index = pp_results[i].start_index;
1494 (*results)[i].length = pp_results[i].length;
1495 }
1496
1497 pp::Memory_Dev memory;
1498 memory.MemFree(pp_results);
1499 }
1500
1501 void Instance::DocumentPaintOccurred() {
1502 if (painted_first_page_)
1503 return;
1504
1505 painted_first_page_ = true;
1506 UpdateToolbarPosition(false);
1507 toolbar_->Splash(kToolbarSplashTimeoutMs);
1508
1509 if (engine_->GetNumberOfPages() > 1)
1510 show_page_indicator_ = true;
1511 else
1512 show_page_indicator_ = false;
1513
1514 if (v_scrollbar_.get() && show_page_indicator_) {
1515 page_indicator_.set_current_page(GetPageNumberToDisplay());
1516 page_indicator_.Splash(kToolbarSplashTimeoutMs,
1517 kPageIndicatorInitialFadeTimeoutMs);
1518 }
1519 }
1520
1521 void Instance::DocumentLoadComplete(int page_count) {
1522 // Clear focus state for OSK.
1523 FormTextFieldFocusChange(false);
1524
1525 // Update progress control.
1526 if (progress_bar_.visible())
1527 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1528
1529 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1530 document_load_state_ = LOAD_STATE_COMPLETE;
1531 UserMetricsRecordAction("PDF.LoadSuccess");
1532
1533 if (did_call_start_loading_) {
1534 pp::PDF::DidStopLoading(this);
1535 did_call_start_loading_ = false;
1536 }
1537
1538 if (on_load_callback_.is_string())
1539 ExecuteScript(on_load_callback_);
1540 // Note: If we are in print preview mode on_load_callback_ might call
1541 // ScrollTo{X|Y}() and we don't want to scroll again and override it.
1542 // #page=N is not supported in Print Preview.
1543 if (!IsPrintPreview()) {
1544 int initial_page = GetInitialPage(url_);
1545 if (initial_page >= 0)
1546 ScrollToPage(initial_page);
1547 }
1548
1549 if (!full_)
1550 return;
1551 if (!pp::PDF::IsAvailable())
1552 return;
1553
1554 int content_restrictions =
1555 CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE;
1556 if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY))
1557 content_restrictions |= CONTENT_RESTRICTION_COPY;
1558
1559 if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) &&
1560 !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) {
1561 printing_enabled_ = false;
1562 if (current_tb_info_ == kPDFToolbarButtons) {
1563 // Remove Print button.
1564 CreateToolbar(kPDFNoPrintToolbarButtons,
1565 arraysize(kPDFNoPrintToolbarButtons));
1566 UpdateToolbarPosition(false);
1567 Invalidate(pp::Rect(plugin_size_));
1568 }
1569 }
1570
1571 pp::PDF::SetContentRestriction(this, content_restrictions);
1572
1573 pp::PDF::HistogramPDFPageCount(this, page_count);
1574 }
1575
1576 void Instance::RotateClockwise() {
1577 engine_->RotateClockwise();
1578 }
1579
1580 void Instance::RotateCounterclockwise() {
1581 engine_->RotateCounterclockwise();
1582 }
1583
1584 void Instance::PreviewDocumentLoadComplete() {
1585 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1586 preview_pages_info_.empty()) {
1587 return;
1588 }
1589
1590 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1591
1592 int dest_page_index = preview_pages_info_.front().second;
1593 int src_page_index =
1594 ExtractPrintPreviewPageIndex(preview_pages_info_.front().first);
1595 if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get())
1596 engine_->AppendPage(preview_engine_.get(), dest_page_index);
1597
1598 preview_pages_info_.pop();
1599 // |print_preview_page_count_| is not updated yet. Do not load any
1600 // other preview pages till we get this information.
1601 if (print_preview_page_count_ == 0)
1602 return;
1603
1604 if (preview_pages_info_.size())
1605 LoadAvailablePreviewPage();
1606 }
1607
1608 void Instance::DocumentLoadFailed() {
1609 DCHECK(document_load_state_ == LOAD_STATE_LOADING);
1610 UserMetricsRecordAction("PDF.LoadFailure");
1611
1612 // Hide progress control.
1613 progress_bar_.Fade(false, kProgressFadeTimeoutMs);
1614
1615 if (did_call_start_loading_) {
1616 pp::PDF::DidStopLoading(this);
1617 did_call_start_loading_ = false;
1618 }
1619
1620 document_load_state_ = LOAD_STATE_FAILED;
1621 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1622 }
1623
1624 void Instance::PreviewDocumentLoadFailed() {
1625 UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure");
1626 if (preview_document_load_state_ != LOAD_STATE_LOADING ||
1627 preview_pages_info_.empty()) {
1628 return;
1629 }
1630
1631 preview_document_load_state_ = LOAD_STATE_FAILED;
1632 preview_pages_info_.pop();
1633
1634 if (preview_pages_info_.size())
1635 LoadAvailablePreviewPage();
1636 }
1637
1638 pp::Instance* Instance::GetPluginInstance() {
1639 return GetInstance();
1640 }
1641
1642 void Instance::DocumentHasUnsupportedFeature(const std::string& feature) {
1643 std::string metric("PDF_Unsupported_");
1644 metric += feature;
1645 if (!unsupported_features_reported_.count(metric)) {
1646 unsupported_features_reported_.insert(metric);
1647 UserMetricsRecordAction(metric);
1648 }
1649
1650 // Since we use an info bar, only do this for full frame plugins..
1651 if (!full_)
1652 return;
1653
1654 if (told_browser_about_unsupported_feature_)
1655 return;
1656 told_browser_about_unsupported_feature_ = true;
1657
1658 pp::PDF::HasUnsupportedFeature(this);
1659 }
1660
1661 void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) {
1662 double progress = 0.0;
1663 if (doc_size == 0) {
1664 // Document size is unknown. Use heuristics.
1665 // We'll make progress logarithmic from 0 to 100M.
1666 static const double kFactor = log(100000000.0) / 100.0;
1667 if (available > 0) {
1668 progress = log(static_cast<double>(available)) / kFactor;
1669 if (progress > 100.0)
1670 progress = 100.0;
1671 }
1672 } else {
1673 progress = 100.0 * static_cast<double>(available) / doc_size;
1674 }
1675 progress_bar_.SetProgress(progress);
1676 }
1677
1678 void Instance::FormTextFieldFocusChange(bool in_focus) {
1679 if (!text_input_.get())
1680 return;
1681 if (in_focus)
1682 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT);
1683 else
1684 text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE);
1685 }
1686
1687 // Called by PDFScriptableObject.
1688 bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) {
1689 std::string method_str = method.AsString();
1690 return (method_str == kJSAccessibility ||
1691 method_str == kJSDocumentLoadComplete ||
1692 method_str == kJSGetHeight ||
1693 method_str == kJSGetHorizontalScrollbarThickness ||
1694 method_str == kJSGetPageLocationNormalized ||
1695 method_str == kJSGetSelectedText ||
1696 method_str == kJSGetVerticalScrollbarThickness ||
1697 method_str == kJSGetWidth ||
1698 method_str == kJSGetZoomLevel ||
1699 method_str == kJSGoToPage ||
1700 method_str == kJSGrayscale ||
1701 method_str == kJSLoadPreviewPage ||
1702 method_str == kJSOnLoad ||
1703 method_str == kJSOnPluginSizeChanged ||
1704 method_str == kJSOnScroll ||
1705 method_str == kJSPageXOffset ||
1706 method_str == kJSPageYOffset ||
1707 method_str == kJSPrintPreviewPageCount ||
1708 method_str == kJSReload ||
1709 method_str == kJSRemovePrintButton ||
1710 method_str == kJSResetPrintPreviewUrl ||
1711 method_str == kJSSendKeyEvent ||
1712 method_str == kJSSetPageNumbers ||
1713 method_str == kJSSetPageXOffset ||
1714 method_str == kJSSetPageYOffset ||
1715 method_str == kJSSetZoomLevel ||
1716 method_str == kJSZoomFitToHeight ||
1717 method_str == kJSZoomFitToWidth ||
1718 method_str == kJSZoomIn ||
1719 method_str == kJSZoomOut);
1720 }
1721
1722 pp::Var Instance::CallScriptableMethod(const pp::Var& method,
1723 const std::vector<pp::Var>& args,
1724 pp::Var* exception) {
1725 std::string method_str = method.AsString();
1726 if (method_str == kJSGrayscale) {
1727 if (args.size() == 1 && args[0].is_bool()) {
1728 engine_->SetGrayscale(args[0].AsBool());
1729 // Redraw
1730 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
1731 #ifdef ENABLE_THUMBNAILS
1732 if (thumbnails_.visible())
1733 thumbnails_.Show(true, true);
1734 #endif
1735 return pp::Var(true);
1736 }
1737 return pp::Var(false);
1738 }
1739 if (method_str == kJSOnLoad) {
1740 if (args.size() == 1 && args[0].is_string()) {
1741 on_load_callback_ = args[0];
1742 return pp::Var(true);
1743 }
1744 return pp::Var(false);
1745 }
1746 if (method_str == kJSOnScroll) {
1747 if (args.size() == 1 && args[0].is_string()) {
1748 on_scroll_callback_ = args[0];
1749 return pp::Var(true);
1750 }
1751 return pp::Var(false);
1752 }
1753 if (method_str == kJSOnPluginSizeChanged) {
1754 if (args.size() == 1 && args[0].is_string()) {
1755 on_plugin_size_changed_callback_ = args[0];
1756 return pp::Var(true);
1757 }
1758 return pp::Var(false);
1759 }
1760 if (method_str == kJSReload) {
1761 document_load_state_ = LOAD_STATE_LOADING;
1762 if (!full_)
1763 LoadUrl(url_);
1764 preview_engine_.reset();
1765 print_preview_page_count_ = 0;
1766 engine_.reset(PDFEngine::Create(this));
1767 engine_->New(url_.c_str());
1768 #ifdef ENABLE_THUMBNAILS
1769 thumbnails_.ResetEngine(engine_.get());
1770 #endif
1771 return pp::Var();
1772 }
1773 if (method_str == kJSResetPrintPreviewUrl) {
1774 if (args.size() == 1 && args[0].is_string()) {
1775 url_ = args[0].AsString();
1776 preview_pages_info_ = std::queue<PreviewPageInfo>();
1777 preview_document_load_state_ = LOAD_STATE_COMPLETE;
1778 }
1779 return pp::Var();
1780 }
1781 if (method_str == kJSZoomFitToHeight) {
1782 SetZoom(ZOOM_FIT_TO_PAGE, 0);
1783 return pp::Var();
1784 }
1785 if (method_str == kJSZoomFitToWidth) {
1786 SetZoom(ZOOM_FIT_TO_WIDTH, 0);
1787 return pp::Var();
1788 }
1789 if (method_str == kJSZoomIn) {
1790 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId));
1791 return pp::Var();
1792 }
1793 if (method_str == kJSZoomOut) {
1794 SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId));
1795 return pp::Var();
1796 }
1797 if (method_str == kJSSetZoomLevel) {
1798 if (args.size() == 1 && args[0].is_number())
1799 SetZoom(ZOOM_SCALE, args[0].AsDouble());
1800 return pp::Var();
1801 }
1802 if (method_str == kJSGetZoomLevel) {
1803 return pp::Var(zoom_);
1804 }
1805 if (method_str == kJSGetHeight) {
1806 return pp::Var(plugin_size_.height());
1807 }
1808 if (method_str == kJSGetWidth) {
1809 return pp::Var(plugin_size_.width());
1810 }
1811 if (method_str == kJSGetHorizontalScrollbarThickness) {
1812 return pp::Var(
1813 h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1814 }
1815 if (method_str == kJSGetVerticalScrollbarThickness) {
1816 return pp::Var(
1817 v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0);
1818 }
1819 if (method_str == kJSGetSelectedText) {
1820 return GetSelectedText(false);
1821 }
1822 if (method_str == kJSDocumentLoadComplete) {
1823 return pp::Var((document_load_state_ != LOAD_STATE_LOADING));
1824 }
1825 if (method_str == kJSPageYOffset) {
1826 return pp::Var(static_cast<int32_t>(
1827 v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0));
1828 }
1829 if (method_str == kJSSetPageYOffset) {
1830 if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get())
1831 ScrollToY(GetScaled(args[0].AsInt()));
1832 return pp::Var();
1833 }
1834 if (method_str == kJSPageXOffset) {
1835 return pp::Var(static_cast<int32_t>(
1836 h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0));
1837 }
1838 if (method_str == kJSSetPageXOffset) {
1839 if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get())
1840 ScrollToX(GetScaled(args[0].AsInt()));
1841 return pp::Var();
1842 }
1843 if (method_str == kJSRemovePrintButton) {
1844 CreateToolbar(kPrintPreviewToolbarButtons,
1845 arraysize(kPrintPreviewToolbarButtons));
1846 UpdateToolbarPosition(false);
1847 Invalidate(pp::Rect(plugin_size_));
1848 return pp::Var();
1849 }
1850 if (method_str == kJSGoToPage) {
1851 if (args.size() == 1 && args[0].is_string()) {
1852 ScrollToPage(atoi(args[0].AsString().c_str()));
1853 }
1854 return pp::Var();
1855 }
1856 if (method_str == kJSAccessibility) {
1857 if (args.size() == 0) {
1858 base::DictionaryValue node;
1859 node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages());
1860 node.SetBoolean(kAccessibleLoaded,
1861 document_load_state_ != LOAD_STATE_LOADING);
1862 bool has_permissions =
1863 engine_->HasPermission(PDFEngine::PERMISSION_COPY) ||
1864 engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE);
1865 node.SetBoolean(kAccessibleCopyable, has_permissions);
1866 std::string json;
1867 base::JSONWriter::Write(&node, &json);
1868 return pp::Var(json);
1869 } else if (args[0].is_number()) {
1870 return pp::Var(engine_->GetPageAsJSON(args[0].AsInt()));
1871 }
1872 }
1873 if (method_str == kJSPrintPreviewPageCount) {
1874 if (args.size() == 1 && args[0].is_number())
1875 SetPrintPreviewMode(args[0].AsInt());
1876 return pp::Var();
1877 }
1878 if (method_str == kJSLoadPreviewPage) {
1879 if (args.size() == 2 && args[0].is_string() && args[1].is_number())
1880 ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt());
1881 return pp::Var();
1882 }
1883 if (method_str == kJSGetPageLocationNormalized) {
1884 const size_t kMaxLength = 30;
1885 char location_info[kMaxLength];
1886 int page_idx = engine_->GetMostVisiblePage();
1887 if (page_idx < 0)
1888 return pp::Var(std::string());
1889 pp::Rect rect = engine_->GetPageContentsRect(page_idx);
1890 int v_scrollbar_reserved_thickness =
1891 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1892
1893 rect.set_x(rect.x() + ((plugin_size_.width() -
1894 v_scrollbar_reserved_thickness - available_area_.width()) / 2));
1895 base::snprintf(location_info,
1896 kMaxLength,
1897 "%0.4f;%0.4f;%0.4f;%0.4f;",
1898 rect.x() / static_cast<float>(plugin_size_.width()),
1899 rect.y() / static_cast<float>(plugin_size_.height()),
1900 rect.width() / static_cast<float>(plugin_size_.width()),
1901 rect.height()/ static_cast<float>(plugin_size_.height()));
1902 return pp::Var(std::string(location_info));
1903 }
1904 if (method_str == kJSSetPageNumbers) {
1905 if (args.size() != 1 || !args[0].is_string())
1906 return pp::Var();
1907 const int num_pages_signed = engine_->GetNumberOfPages();
1908 if (num_pages_signed <= 0)
1909 return pp::Var();
1910 scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>(
1911 base::JSONReader::Read(args[0].AsString(), false)));
1912 const size_t num_pages = static_cast<size_t>(num_pages_signed);
1913 if (!page_ranges.get() || page_ranges->GetSize() != num_pages)
1914 return pp::Var();
1915
1916 std::vector<int> print_preview_page_numbers;
1917 for (size_t index = 0; index < num_pages; ++index) {
1918 int page_number = 0; // |page_number| is 1-based.
1919 if (!page_ranges->GetInteger(index, &page_number) || page_number < 1)
1920 return pp::Var();
1921 print_preview_page_numbers.push_back(page_number);
1922 }
1923 print_preview_page_numbers_ = print_preview_page_numbers;
1924 page_indicator_.set_current_page(GetPageNumberToDisplay());
1925 return pp::Var();
1926 }
1927 // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735.
1928 // In JS, creating a synthetic keyboard event and dispatching it always
1929 // result in a keycode of 0.
1930 if (method_str == kJSSendKeyEvent) {
1931 if (args.size() == 1 && args[0].is_number()) {
1932 pp::KeyboardInputEvent event(
1933 this, // instance
1934 PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this.
1935 0, // timestamp, not used for kbd events.
1936 0, // no modifiers.
1937 args[0].AsInt(), // keycode.
1938 pp::Var()); // no char text needed.
1939 HandleInputEvent(event);
1940 }
1941 }
1942 return pp::Var();
1943 }
1944
1945 void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) {
1946 bool force_no_horizontal_scrollbar = false;
1947 int scrollbar_thickness = GetScrollbarThickness();
1948
1949 if (old_device_scale != device_scale_) {
1950 // Change in device scale forces us to recreate resources
1951 ConfigureNumberImageGenerator();
1952
1953 CreateToolbar(current_tb_info_, current_tb_info_size_);
1954 // Load autoscroll anchor image.
1955 autoscroll_anchor_ =
1956 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON);
1957
1958 ConfigurePageIndicator();
1959 ConfigureProgressBar();
1960
1961 pp::Point scroll_position = engine_->GetScrollPosition();
1962 ScalePoint(device_scale_ / old_device_scale, &scroll_position);
1963 engine_->SetScrollPosition(scroll_position);
1964 }
1965
1966 UpdateZoomScale();
1967 if (zoom_ != old_zoom || device_scale_ != old_device_scale)
1968 engine_->ZoomUpdated(zoom_ * device_scale_);
1969 if (zoom_ != old_zoom)
1970 ZoomChanged(zoom_);
1971
1972 available_area_ = pp::Rect(plugin_size_);
1973 if (GetDocumentPixelHeight() > plugin_size_.height()) {
1974 CreateVerticalScrollbar();
1975 } else {
1976 DestroyVerticalScrollbar();
1977 }
1978
1979 int v_scrollbar_reserved_thickness =
1980 v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0;
1981
1982 if (!force_no_horizontal_scrollbar &&
1983 GetDocumentPixelWidth() >
1984 (plugin_size_.width() - v_scrollbar_reserved_thickness)) {
1985 CreateHorizontalScrollbar();
1986
1987 // Adding the horizontal scrollbar now might cause us to need vertical
1988 // scrollbars.
1989 if (GetDocumentPixelHeight() >
1990 plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) {
1991 CreateVerticalScrollbar();
1992 }
1993
1994 } else {
1995 DestroyHorizontalScrollbar();
1996 }
1997
1998 #ifdef ENABLE_THUMBNAILS
1999 int thumbnails_pos = 0, thumbnails_total = 0;
2000 #endif
2001 if (v_scrollbar_.get()) {
2002 v_scrollbar_->SetScale(device_scale_);
2003 available_area_.set_width(
2004 std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness));
2005
2006 #ifdef ENABLE_THUMBNAILS
2007 int height = plugin_size_.height();
2008 #endif
2009 int height_dip = plugin_dip_size_.height();
2010
2011 #if defined(OS_MACOSX)
2012 // Before Lion, Mac always had the resize at the bottom. After that, it
2013 // never did.
2014 if ((base::mac::IsOSSnowLeopard() && full_) ||
2015 (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) {
2016 #else
2017 if (h_scrollbar_.get()) {
2018 #endif // defined(OS_MACOSX)
2019 #ifdef ENABLE_THUMBNAILS
2020 height -= GetScaled(GetScrollbarThickness());
2021 #endif
2022 height_dip -= GetScrollbarThickness();
2023 }
2024 #ifdef ENABLE_THUMBNAILS
2025 int32 doc_height = GetDocumentPixelHeight();
2026 #endif
2027 int32 doc_height_dip =
2028 static_cast<int32>(GetDocumentPixelHeight() / device_scale_);
2029 #if defined(OS_MACOSX)
2030 // On the Mac we always allow room for the resize button (whose width is
2031 // the same as that of the scrollbar) in full mode. However, if there is no
2032 // no horizontal scrollbar, the end of the scrollbar will scroll past the
2033 // end of the document. This is because the scrollbar assumes that its own
2034 // height (in the case of a vscroll bar) is the same as the height of the
2035 // viewport. Since the viewport is actually larger, we compensate by
2036 // adjusting the document height. Similar logic applies below for the
2037 // horizontal scrollbar.
2038 // For example, if the document size is 1000, and the viewport size is 200,
2039 // then the scrollbar position at the end will be 800. In this case the
2040 // viewport is actally 215 (assuming 15 as the scrollbar width) but the
2041 // scrollbar thinks it is 200. We want the scrollbar position at the end to
2042 // be 785. Making the document size 985 achieves this.
2043 if (full_ && !h_scrollbar_.get()) {
2044 #ifdef ENABLE_THUMBNAILS
2045 doc_height -= GetScaled(GetScrollbarThickness());
2046 #endif
2047 doc_height_dip -= GetScrollbarThickness();
2048 }
2049 #endif // defined(OS_MACOSX)
2050
2051 int32 position;
2052 position = v_scrollbar_->GetValue();
2053 position = static_cast<int>(position * zoom_ / old_zoom);
2054 valid_v_range_ = doc_height_dip - height_dip;
2055 if (position > valid_v_range_)
2056 position = valid_v_range_;
2057
2058 v_scrollbar_->SetValue(position);
2059
2060 PP_Rect loc;
2061 loc.point.x = static_cast<int>(available_area_.right() / device_scale_);
2062 if (IsOverlayScrollbar())
2063 loc.point.x -= scrollbar_thickness;
2064 loc.point.y = 0;
2065 loc.size.width = scrollbar_thickness;
2066 loc.size.height = height_dip;
2067 v_scrollbar_->SetLocation(loc);
2068 v_scrollbar_->SetDocumentSize(doc_height_dip);
2069
2070 #ifdef ENABLE_THUMBNAILS
2071 thumbnails_pos = position;
2072 thumbnails_total = doc_height - height;
2073 #endif
2074 }
2075
2076 if (h_scrollbar_.get()) {
2077 h_scrollbar_->SetScale(device_scale_);
2078 available_area_.set_height(
2079 std::max(0, plugin_size_.height() -
2080 GetScaled(GetScrollbarReservedThickness())));
2081
2082 int width_dip = plugin_dip_size_.width();
2083
2084 // See note above.
2085 #if defined(OS_MACOSX)
2086 if ((base::mac::IsOSSnowLeopard() && full_) ||
2087 (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) {
2088 #else
2089 if (v_scrollbar_.get()) {
2090 #endif
2091 width_dip -= GetScrollbarThickness();
2092 }
2093 int32 doc_width_dip =
2094 static_cast<int32>(GetDocumentPixelWidth() / device_scale_);
2095 #if defined(OS_MACOSX)
2096 // See comment in the above if (v_scrollbar_.get()) block.
2097 if (full_ && !v_scrollbar_.get())
2098 doc_width_dip -= GetScrollbarThickness();
2099 #endif // defined(OS_MACOSX)
2100
2101 int32 position;
2102 position = h_scrollbar_->GetValue();
2103 position = static_cast<int>(position * zoom_ / old_zoom);
2104 position = std::min(position, doc_width_dip - width_dip);
2105
2106 h_scrollbar_->SetValue(position);
2107
2108 PP_Rect loc;
2109 loc.point.x = 0;
2110 loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_);
2111 if (IsOverlayScrollbar())
2112 loc.point.y -= scrollbar_thickness;
2113 loc.size.width = width_dip;
2114 loc.size.height = scrollbar_thickness;
2115 h_scrollbar_->SetLocation(loc);
2116 h_scrollbar_->SetDocumentSize(doc_width_dip);
2117 }
2118
2119 int doc_width = GetDocumentPixelWidth();
2120 if (doc_width < available_area_.width()) {
2121 available_area_.Offset((available_area_.width() - doc_width) / 2, 0);
2122 available_area_.set_width(doc_width);
2123 }
2124 int doc_height = GetDocumentPixelHeight();
2125 if (doc_height < available_area_.height()) {
2126 available_area_.set_height(doc_height);
2127 }
2128
2129 // We'll invalidate the entire plugin anyways.
2130 UpdateToolbarPosition(false);
2131 UpdateProgressBarPosition(false);
2132 UpdatePageIndicatorPosition(false);
2133
2134 #ifdef ENABLE_THUMBNAILS
2135 // Update thumbnail control position.
2136 thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false);
2137 pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0,
2138 GetScaled(kThumbnailsWidth), plugin_size_.height());
2139 if (v_scrollbar_.get())
2140 thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0);
2141 if (h_scrollbar_.get())
2142 thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness);
2143 thumbnails_.SetRect(thumbnails_rc, false);
2144 #endif
2145
2146 CalculateBackgroundParts();
2147 engine_->PageOffsetUpdated(available_area_.point());
2148 engine_->PluginSizeUpdated(available_area_.size());
2149
2150 if (!document_size_.GetArea())
2151 return;
2152 paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_));
2153
2154 // Run the plugin size change callback asynchronously. This function can be
2155 // invoked by a layout change which should not re-enter into JS synchronously.
2156 pp::CompletionCallback callback =
2157 callback_factory_.NewCallback(&Instance::RunCallback,
2158 on_plugin_size_changed_callback_);
2159 pp::Module::Get()->core()->CallOnMainThread(0, callback);
2160 }
2161
2162 void Instance::RunCallback(int32_t, pp::Var callback) {
2163 if (callback.is_string())
2164 ExecuteScript(callback);
2165 }
2166
2167 void Instance::CreateHorizontalScrollbar() {
2168 if (h_scrollbar_.get())
2169 return;
2170
2171 h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false));
2172 }
2173
2174 void Instance::CreateVerticalScrollbar() {
2175 if (v_scrollbar_.get())
2176 return;
2177
2178 v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true));
2179 }
2180
2181 void Instance::DestroyHorizontalScrollbar() {
2182 if (!h_scrollbar_.get())
2183 return;
2184 if (h_scrollbar_->GetValue())
2185 engine_->ScrolledToXPosition(0);
2186 h_scrollbar_.reset();
2187 }
2188
2189 void Instance::DestroyVerticalScrollbar() {
2190 if (!v_scrollbar_.get())
2191 return;
2192 if (v_scrollbar_->GetValue())
2193 engine_->ScrolledToYPosition(0);
2194 v_scrollbar_.reset();
2195 page_indicator_.Show(false, true);
2196 }
2197
2198 int Instance::GetScrollbarThickness() {
2199 if (scrollbar_thickness_ == -1) {
2200 pp::Scrollbar_Dev temp_scrollbar(this, false);
2201 scrollbar_thickness_ = temp_scrollbar.GetThickness();
2202 scrollbar_reserved_thickness_ =
2203 temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_;
2204 }
2205
2206 return scrollbar_thickness_;
2207 }
2208
2209 int Instance::GetScrollbarReservedThickness() {
2210 GetScrollbarThickness();
2211 return scrollbar_reserved_thickness_;
2212 }
2213
2214 bool Instance::IsOverlayScrollbar() {
2215 return GetScrollbarReservedThickness() == 0;
2216 }
2217
2218 void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) {
2219 toolbar_.reset(new FadingControls());
2220
2221 DCHECK(tb_info);
2222 DCHECK(size >= 0);
2223
2224 // Remember the current toolbar information in case we need to recreate the
2225 // images later.
2226 current_tb_info_ = tb_info;
2227 current_tb_info_size_ = size;
2228
2229 int max_height = 0;
2230 pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop);
2231 ScalePoint(device_scale_, &origin);
2232
2233 std::list<Button*> buttons;
2234 for (size_t i = 0; i < size; i++) {
2235 Button* btn = new Button;
2236 pp::ImageData normal_face =
2237 CreateResourceImage(tb_info[i].normal);
2238 btn->CreateButton(tb_info[i].id,
2239 origin,
2240 true,
2241 toolbar_.get(),
2242 tb_info[i].style,
2243 normal_face,
2244 CreateResourceImage(tb_info[i].highlighted),
2245 CreateResourceImage(tb_info[i].pressed));
2246 buttons.push_back(btn);
2247
2248 origin += pp::Point(normal_face.size().width(), 0);
2249 max_height = std::max(max_height, normal_face.size().height());
2250 }
2251
2252 pp::Rect rc_toolbar(0, 0,
2253 origin.x() + GetToolbarRightOffset(),
2254 origin.y() + max_height + GetToolbarBottomOffset());
2255 toolbar_->CreateFadingControls(
2256 kToolbarId, rc_toolbar, false, this, kTransparentAlpha);
2257
2258 std::list<Button*>::iterator iter;
2259 for (iter = buttons.begin(); iter != buttons.end(); ++iter) {
2260 toolbar_->AddControl(*iter);
2261 }
2262 }
2263
2264 int Instance::GetToolbarRightOffset() {
2265 int scrollbar_thickness = GetScrollbarThickness();
2266 return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness;
2267 }
2268
2269 int Instance::GetToolbarBottomOffset() {
2270 int scrollbar_thickness = GetScrollbarThickness();
2271 return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness;
2272 }
2273
2274 std::vector<pp::ImageData> Instance::GetThumbnailResources() {
2275 std::vector<pp::ImageData> num_images(10);
2276 num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0);
2277 num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1);
2278 num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2);
2279 num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3);
2280 num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4);
2281 num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5);
2282 num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6);
2283 num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7);
2284 num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8);
2285 num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9);
2286 return num_images;
2287 }
2288
2289 std::vector<pp::ImageData> Instance::GetProgressBarResources(
2290 pp::ImageData* background) {
2291 std::vector<pp::ImageData> result(9);
2292 result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0);
2293 result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1);
2294 result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2);
2295 result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3);
2296 result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4);
2297 result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5);
2298 result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6);
2299 result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7);
2300 result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8);
2301 *background = CreateResourceImage(
2302 PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND);
2303 return result;
2304 }
2305
2306 void Instance::CreatePageIndicator(bool always_visible) {
2307 page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this,
2308 number_image_generator(), always_visible);
2309 ConfigurePageIndicator();
2310 }
2311
2312 void Instance::ConfigurePageIndicator() {
2313 pp::ImageData background =
2314 CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND);
2315 page_indicator_.Configure(pp::Point(), background);
2316 }
2317
2318 void Instance::CreateProgressBar() {
2319 pp::ImageData background;
2320 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2321 std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING);
2322 progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0,
2323 device_scale_, images, background, text);
2324 }
2325
2326 void Instance::ConfigureProgressBar() {
2327 pp::ImageData background;
2328 std::vector<pp::ImageData> images = GetProgressBarResources(&background);
2329 progress_bar_.Reconfigure(background, images, device_scale_);
2330 }
2331
2332 void Instance::CreateThumbnails() {
2333 thumbnails_.CreateThumbnailControl(
2334 kThumbnailsId, pp::Rect(), false, this, engine_.get(),
2335 number_image_generator());
2336 }
2337
2338 void Instance::LoadUrl(const std::string& url) {
2339 LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen);
2340 }
2341
2342 void Instance::LoadPreviewUrl(const std::string& url) {
2343 LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview);
2344 }
2345
2346 void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader,
2347 void (Instance::* method)(int32_t)) {
2348 pp::URLRequestInfo request(this);
2349 request.SetURL(url);
2350 request.SetMethod("GET");
2351
2352 *loader = CreateURLLoaderInternal();
2353 pp::CompletionCallback callback = loader_factory_.NewCallback(method);
2354 int rv = loader->Open(request, callback);
2355 if (rv != PP_OK_COMPLETIONPENDING)
2356 callback.Run(rv);
2357 }
2358
2359 pp::URLLoader Instance::CreateURLLoaderInternal() {
2360 pp::URLLoader loader(this);
2361
2362 const PPB_URLLoaderTrusted* trusted_interface =
2363 reinterpret_cast<const PPB_URLLoaderTrusted*>(
2364 pp::Module::Get()->GetBrowserInterface(
2365 PPB_URLLOADERTRUSTED_INTERFACE));
2366 if (trusted_interface)
2367 trusted_interface->GrantUniversalAccess(loader.pp_resource());
2368 return loader;
2369 }
2370
2371 int Instance::GetInitialPage(const std::string& url) {
2372 size_t found_idx = url.find('#');
2373 if (found_idx == std::string::npos)
2374 return -1;
2375
2376 const std::string& ref = url.substr(found_idx + 1);
2377 std::vector<std::string> fragments;
2378 Tokenize(ref, kDelimiters, &fragments);
2379
2380 // Page number to return, zero-based.
2381 int page = -1;
2382
2383 // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly
2384 // mentioned except by example in the Adobe "PDF Open Parameters" document.
2385 if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos))
2386 return engine_->GetNamedDestinationPage(fragments[0]);
2387
2388 for (size_t i = 0; i < fragments.size(); ++i) {
2389 std::vector<std::string> key_value;
2390 base::SplitString(fragments[i], '=', &key_value);
2391 if (key_value.size() != 2)
2392 continue;
2393 const std::string& key = key_value[0];
2394 const std::string& value = key_value[1];
2395
2396 if (base::strcasecmp(kPage, key.c_str()) == 0) {
2397 // |page_value| is 1-based.
2398 int page_value = -1;
2399 if (base::StringToInt(value, &page_value) && page_value > 0)
2400 page = page_value - 1;
2401 continue;
2402 }
2403 if (base::strcasecmp(kNamedDest, key.c_str()) == 0) {
2404 // |page_value| is 0-based.
2405 int page_value = engine_->GetNamedDestinationPage(value);
2406 if (page_value >= 0)
2407 page = page_value;
2408 continue;
2409 }
2410 }
2411 return page;
2412 }
2413
2414 void Instance::UpdateToolbarPosition(bool invalidate) {
2415 pp::Rect ctrl_rc = toolbar_->GetControlsRect();
2416 int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() +
2417 GetScaled(kToolbarFadingOffsetLeft);
2418 int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() +
2419 GetScaled(kToolbarFadingOffsetBottom);
2420
2421 // Update toolbar position
2422 if (plugin_size_.width() < min_toolbar_width ||
2423 plugin_size_.height() < min_toolbar_height) {
2424 // Disable toolbar if it does not fit on the screen.
2425 toolbar_->Show(false, invalidate);
2426 } else {
2427 pp::Point offset(
2428 plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(),
2429 plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom());
2430 toolbar_->MoveBy(offset, invalidate);
2431
2432 int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width);
2433 toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width());
2434 toolbar_->Show(painted_first_page_, invalidate);
2435 }
2436 }
2437
2438 void Instance::UpdateProgressBarPosition(bool invalidate) {
2439 // TODO(gene): verify we don't overlap with toolbar.
2440 int scrollbar_thickness = GetScrollbarThickness();
2441 pp::Point progress_origin(
2442 scrollbar_thickness + GetScaled(kProgressOffsetLeft),
2443 plugin_size_.height() - progress_bar_.rect().height() -
2444 scrollbar_thickness - GetScaled(kProgressOffsetBottom));
2445 progress_bar_.MoveTo(progress_origin, invalidate);
2446 }
2447
2448 void Instance::UpdatePageIndicatorPosition(bool invalidate) {
2449 int32 doc_height = static_cast<int>(document_size_.height() * zoom_);
2450 pp::Point origin(
2451 plugin_size_.width() - page_indicator_.rect().width() -
2452 GetScaled(GetScrollbarReservedThickness()),
2453 page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(),
2454 doc_height, plugin_size_.height()));
2455 page_indicator_.MoveTo(origin, invalidate);
2456 }
2457
2458 void Instance::SetZoom(ZoomMode zoom_mode, double scale) {
2459 double old_zoom = zoom_;
2460
2461 zoom_mode_ = zoom_mode;
2462 if (zoom_mode_ == ZOOM_SCALE)
2463 zoom_ = scale;
2464 UpdateZoomScale();
2465
2466 engine_->ZoomUpdated(zoom_ * device_scale_);
2467 OnGeometryChanged(old_zoom, device_scale_);
2468
2469 // If fit-to-height, snap to the beginning of the most visible page.
2470 if (zoom_mode_ == ZOOM_FIT_TO_PAGE) {
2471 ScrollToPage(engine_->GetMostVisiblePage());
2472 }
2473
2474 // Update sticky buttons to the current zoom style.
2475 Button* ftp_btn = static_cast<Button*>(
2476 toolbar_->GetControl(kFitToPageButtonId));
2477 Button* ftw_btn = static_cast<Button*>(
2478 toolbar_->GetControl(kFitToWidthButtonId));
2479 switch (zoom_mode_) {
2480 case ZOOM_FIT_TO_PAGE:
2481 ftp_btn->SetPressedState(true);
2482 ftw_btn->SetPressedState(false);
2483 break;
2484 case ZOOM_FIT_TO_WIDTH:
2485 ftw_btn->SetPressedState(true);
2486 ftp_btn->SetPressedState(false);
2487 break;
2488 default:
2489 ftw_btn->SetPressedState(false);
2490 ftp_btn->SetPressedState(false);
2491 }
2492 }
2493
2494 void Instance::UpdateZoomScale() {
2495 switch (zoom_mode_) {
2496 case ZOOM_SCALE:
2497 break; // Keep current scale.
2498 case ZOOM_FIT_TO_PAGE: {
2499 int page_num = engine_->GetFirstVisiblePage();
2500 if (page_num == -1)
2501 break;
2502 pp::Rect rc = engine_->GetPageRect(page_num);
2503 if (!rc.height())
2504 break;
2505 // Calculate fit to width zoom level.
2506 double ftw_zoom = static_cast<double>(plugin_dip_size_.width() -
2507 GetScrollbarReservedThickness()) / document_size_.width();
2508 // Calculate fit to height zoom level. If document will not fit
2509 // horizontally, adjust zoom level to allow space for horizontal
2510 // scrollbar.
2511 double fth_zoom =
2512 static_cast<double>(plugin_dip_size_.height()) / rc.height();
2513 if (fth_zoom * document_size_.width() >
2514 plugin_dip_size_.width() - GetScrollbarReservedThickness())
2515 fth_zoom = static_cast<double>(plugin_dip_size_.height()
2516 - GetScrollbarReservedThickness()) / rc.height();
2517 zoom_ = std::min(ftw_zoom, fth_zoom);
2518 } break;
2519 case ZOOM_FIT_TO_WIDTH:
2520 case ZOOM_AUTO:
2521 if (!document_size_.width())
2522 break;
2523 zoom_ = static_cast<double>(plugin_dip_size_.width() -
2524 GetScrollbarReservedThickness()) / document_size_.width();
2525 if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0)
2526 zoom_ = 1.0;
2527 break;
2528 }
2529 zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom);
2530 }
2531
2532 double Instance::CalculateZoom(uint32 control_id) const {
2533 if (control_id == kZoomInButtonId) {
2534 for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) {
2535 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i];
2536 if (current_zoom - content::kEpsilon > zoom_)
2537 return current_zoom;
2538 }
2539 } else {
2540 for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) {
2541 double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1];
2542 if (current_zoom + content::kEpsilon < zoom_)
2543 return current_zoom;
2544 }
2545 }
2546 return zoom_;
2547 }
2548
2549 pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) {
2550 pp::ImageData resource_data;
2551 if (hidpi_enabled_) {
2552 resource_data =
2553 pp::PDF::GetResourceImageForScale(this, image_id, device_scale_);
2554 }
2555
2556 return resource_data.data() ? resource_data
2557 : pp::PDF::GetResourceImage(this, image_id);
2558 }
2559
2560 std::string Instance::GetLocalizedString(PP_ResourceString id) {
2561 pp::Var rv(pp::PDF::GetLocalizedString(this, id));
2562 if (!rv.is_string())
2563 return std::string();
2564
2565 return rv.AsString();
2566 }
2567
2568 void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) {
2569 std::string str(GetLocalizedString(id));
2570
2571 pp::FontDescription_Dev description;
2572 description.set_family(PP_FONTFAMILY_SANSSERIF);
2573 description.set_size(kMessageTextSize * device_scale_);
2574 pp::Font_Dev font(this, description);
2575 int length = font.MeasureSimpleText(str);
2576 pp::Point point(top_center);
2577 point.set_x(point.x() - length / 2);
2578 DCHECK(!image_data_.is_null());
2579 font.DrawSimpleText(&image_data_, str, point, kMessageTextColor);
2580 }
2581
2582 void Instance::SetPrintPreviewMode(int page_count) {
2583 if (!IsPrintPreview() || page_count <= 0) {
2584 print_preview_page_count_ = 0;
2585 return;
2586 }
2587
2588 print_preview_page_count_ = page_count;
2589 ScrollToPage(0);
2590 engine_->AppendBlankPages(print_preview_page_count_);
2591 if (preview_pages_info_.size() > 0)
2592 LoadAvailablePreviewPage();
2593 }
2594
2595 bool Instance::IsPrintPreview() {
2596 return IsPrintPreviewUrl(url_);
2597 }
2598
2599 int Instance::GetPageNumberToDisplay() {
2600 int page = engine_->GetMostVisiblePage();
2601 if (IsPrintPreview() && !print_preview_page_numbers_.empty()) {
2602 page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1);
2603 return print_preview_page_numbers_[page];
2604 }
2605 return page + 1;
2606 }
2607
2608 void Instance::ProcessPreviewPageInfo(const std::string& url,
2609 int dst_page_index) {
2610 if (!IsPrintPreview() || print_preview_page_count_ < 0)
2611 return;
2612
2613 int src_page_index = ExtractPrintPreviewPageIndex(url);
2614 if (src_page_index < 1)
2615 return;
2616
2617 preview_pages_info_.push(std::make_pair(url, dst_page_index));
2618 LoadAvailablePreviewPage();
2619 }
2620
2621 void Instance::LoadAvailablePreviewPage() {
2622 if (preview_pages_info_.size() <= 0)
2623 return;
2624
2625 std::string url = preview_pages_info_.front().first;
2626 int dst_page_index = preview_pages_info_.front().second;
2627 int src_page_index = ExtractPrintPreviewPageIndex(url);
2628 if (src_page_index < 1 ||
2629 dst_page_index >= print_preview_page_count_ ||
2630 preview_document_load_state_ == LOAD_STATE_LOADING) {
2631 return;
2632 }
2633
2634 preview_document_load_state_ = LOAD_STATE_LOADING;
2635 LoadPreviewUrl(url);
2636 }
2637
2638 void Instance::EnableAutoscroll(const pp::Point& origin) {
2639 if (is_autoscroll_)
2640 return;
2641
2642 pp::Size client_size = plugin_size_;
2643 if (v_scrollbar_.get())
2644 client_size.Enlarge(-GetScrollbarThickness(), 0);
2645 if (h_scrollbar_.get())
2646 client_size.Enlarge(0, -GetScrollbarThickness());
2647
2648 // Do not allow autoscroll if client area is too small.
2649 if (autoscroll_anchor_.size().width() > client_size.width() ||
2650 autoscroll_anchor_.size().height() > client_size.height())
2651 return;
2652
2653 autoscroll_rect_ = pp::Rect(
2654 pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2,
2655 origin.y() - autoscroll_anchor_.size().height() / 2),
2656 autoscroll_anchor_.size());
2657
2658 // Make sure autoscroll anchor is in the client area.
2659 if (autoscroll_rect_.right() > client_size.width()) {
2660 autoscroll_rect_.set_x(
2661 client_size.width() - autoscroll_anchor_.size().width());
2662 }
2663 if (autoscroll_rect_.bottom() > client_size.height()) {
2664 autoscroll_rect_.set_y(
2665 client_size.height() - autoscroll_anchor_.size().height());
2666 }
2667
2668 if (autoscroll_rect_.x() < 0)
2669 autoscroll_rect_.set_x(0);
2670 if (autoscroll_rect_.y() < 0)
2671 autoscroll_rect_.set_y(0);
2672
2673 is_autoscroll_ = true;
2674 Invalidate(kAutoScrollId, autoscroll_rect_);
2675
2676 ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs);
2677 }
2678
2679 void Instance::DisableAutoscroll() {
2680 if (is_autoscroll_) {
2681 is_autoscroll_ = false;
2682 Invalidate(kAutoScrollId, autoscroll_rect_);
2683 }
2684 }
2685
2686 PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) {
2687 // Scroll only if mouse pointer is outside of the anchor area.
2688 if (autoscroll_rect_.Contains(mouse_pos)) {
2689 autoscroll_x_ = 0;
2690 autoscroll_y_ = 0;
2691 return PP_CURSORTYPE_MIDDLEPANNING;
2692 }
2693
2694 // Relative position to the center of anchor area.
2695 pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint();
2696
2697 // Calculate angle from the X axis. Angle is in range from -pi to pi.
2698 double angle = atan2(static_cast<double>(rel_pos.y()),
2699 static_cast<double>(rel_pos.x()));
2700
2701 autoscroll_x_ = rel_pos.x() * kAutoScrollFactor;
2702 autoscroll_y_ = rel_pos.y() * kAutoScrollFactor;
2703
2704 // Angle is from -pi to pi. Screen Y is increasing toward bottom,
2705 // so negative angle represent north direction.
2706 if (angle < - (M_PI * 7.0 / 8.0)) {
2707 // going west
2708 return PP_CURSORTYPE_WESTPANNING;
2709 } else if (angle < - (M_PI * 5.0 / 8.0)) {
2710 // going north-west
2711 return PP_CURSORTYPE_NORTHWESTPANNING;
2712 } else if (angle < - (M_PI * 3.0 / 8.0)) {
2713 // going north.
2714 return PP_CURSORTYPE_NORTHPANNING;
2715 } else if (angle < - (M_PI * 1.0 / 8.0)) {
2716 // going north-east
2717 return PP_CURSORTYPE_NORTHEASTPANNING;
2718 } else if (angle < M_PI * 1.0 / 8.0) {
2719 // going east.
2720 return PP_CURSORTYPE_EASTPANNING;
2721 } else if (angle < M_PI * 3.0 / 8.0) {
2722 // going south-east
2723 return PP_CURSORTYPE_SOUTHEASTPANNING;
2724 } else if (angle < M_PI * 5.0 / 8.0) {
2725 // going south.
2726 return PP_CURSORTYPE_SOUTHPANNING;
2727 } else if (angle < M_PI * 7.0 / 8.0) {
2728 // going south-west
2729 return PP_CURSORTYPE_SOUTHWESTPANNING;
2730 }
2731
2732 // went around the circle, going west again
2733 return PP_CURSORTYPE_WESTPANNING;
2734 }
2735
2736 void Instance::ConfigureNumberImageGenerator() {
2737 std::vector<pp::ImageData> num_images = GetThumbnailResources();
2738 pp::ImageData number_background = CreateResourceImage(
2739 PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND);
2740 number_image_generator_->Configure(number_background,
2741 num_images,
2742 device_scale_);
2743 }
2744
2745 NumberImageGenerator* Instance::number_image_generator() {
2746 if (!number_image_generator_.get()) {
2747 number_image_generator_.reset(new NumberImageGenerator(this));
2748 ConfigureNumberImageGenerator();
2749 }
2750 return number_image_generator_.get();
2751 }
2752
2753 int Instance::GetScaled(int x) const {
2754 return static_cast<int>(x * device_scale_);
2755 }
2756
2757 void Instance::UserMetricsRecordAction(const std::string& action) {
2758 pp::PDF::UserMetricsRecordAction(this, pp::Var(action));
2759 }
2760
2761 PDFScriptableObject::PDFScriptableObject(Instance* instance)
2762 : instance_(instance) {
2763 }
2764
2765 PDFScriptableObject::~PDFScriptableObject() {
2766 }
2767
2768 bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) {
2769 return instance_->HasScriptableMethod(name, exception);
2770 }
2771
2772 pp::Var PDFScriptableObject::Call(const pp::Var& method,
2773 const std::vector<pp::Var>& args,
2774 pp::Var* exception) {
2775 return instance_->CallScriptableMethod(method, args, exception);
2776 }
2777
2778 } // namespace chrome_pdf