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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef PDF_PDFIUM_PDFIUM_ENGINE_H_ | 5 #ifndef PDF_PDFIUM_PDFIUM_ENGINE_H_ |
6 #define PDF_PDFIUM_PDFIUM_ENGINE_H_ | 6 #define PDF_PDFIUM_PDFIUM_ENGINE_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
11 #include <map> | 11 #include <map> |
12 #include <memory> | 12 #include <memory> |
13 #include <string> | 13 #include <string> |
14 #include <utility> | 14 #include <utility> |
15 #include <vector> | 15 #include <vector> |
16 | 16 |
17 #include "base/macros.h" | 17 #include "base/macros.h" |
| 18 #include "base/optional.h" |
18 #include "base/time/time.h" | 19 #include "base/time/time.h" |
19 #include "pdf/document_loader.h" | 20 #include "pdf/document_loader.h" |
20 #include "pdf/pdf_engine.h" | 21 #include "pdf/pdf_engine.h" |
21 #include "pdf/pdfium/pdfium_page.h" | 22 #include "pdf/pdfium/pdfium_page.h" |
22 #include "pdf/pdfium/pdfium_range.h" | 23 #include "pdf/pdfium/pdfium_range.h" |
23 #include "ppapi/cpp/completion_callback.h" | 24 #include "ppapi/cpp/completion_callback.h" |
24 #include "ppapi/cpp/dev/buffer_dev.h" | 25 #include "ppapi/cpp/dev/buffer_dev.h" |
25 #include "ppapi/cpp/image_data.h" | 26 #include "ppapi/cpp/image_data.h" |
26 #include "ppapi/cpp/point.h" | 27 #include "ppapi/cpp/point.h" |
27 #include "ppapi/cpp/var_array.h" | 28 #include "ppapi/cpp/var_array.h" |
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242 // document size. | 243 // document size. |
243 void LoadPageInfo(bool reload); | 244 void LoadPageInfo(bool reload); |
244 | 245 |
245 // Calculates which pages should be displayed right now. | 246 // Calculates which pages should be displayed right now. |
246 void CalculateVisiblePages(); | 247 void CalculateVisiblePages(); |
247 | 248 |
248 // Returns true iff the given page index is visible. CalculateVisiblePages | 249 // Returns true iff the given page index is visible. CalculateVisiblePages |
249 // must have been called first. | 250 // must have been called first. |
250 bool IsPageVisible(int index) const; | 251 bool IsPageVisible(int index) const; |
251 | 252 |
| 253 // Internal interface that caches the page index requested by PDFium to get |
| 254 // scrolled to. The cache is to be be used during the interval the PDF |
| 255 // plugin has not finished handling the scroll request. |
| 256 void ScrollToPage(int page); |
| 257 |
252 // Checks if a page is now available, and if so marks it as such and returns | 258 // Checks if a page is now available, and if so marks it as such and returns |
253 // true. Otherwise, it will return false and will add the index to the given | 259 // true. Otherwise, it will return false and will add the index to the given |
254 // array if it's not already there. | 260 // array if it's not already there. |
255 bool CheckPageAvailable(int index, std::vector<int>* pending); | 261 bool CheckPageAvailable(int index, std::vector<int>* pending); |
256 | 262 |
257 // Helper function to get a given page's size in pixels. This is not part of | 263 // Helper function to get a given page's size in pixels. This is not part of |
258 // PDFiumPage because we might not have that structure when we need this. | 264 // PDFiumPage because we might not have that structure when we need this. |
259 pp::Size GetPageSize(int index); | 265 pp::Size GetPageSize(int index); |
260 | 266 |
261 void GetAllScreenRectsUnion(std::vector<PDFiumRange>* rect_range, | 267 void GetAllScreenRectsUnion(std::vector<PDFiumRange>* rect_range, |
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671 std::map<int, std::pair<int, TimerCallback> > timers_; | 677 std::map<int, std::pair<int, TimerCallback> > timers_; |
672 int next_timer_id_; | 678 int next_timer_id_; |
673 | 679 |
674 // Holds the zero-based page index of the last page that the mouse clicked on. | 680 // Holds the zero-based page index of the last page that the mouse clicked on. |
675 int last_page_mouse_down_; | 681 int last_page_mouse_down_; |
676 | 682 |
677 // Holds the zero-based page index of the most visible page; refreshed by | 683 // Holds the zero-based page index of the most visible page; refreshed by |
678 // calling CalculateVisiblePages() | 684 // calling CalculateVisiblePages() |
679 int most_visible_page_; | 685 int most_visible_page_; |
680 | 686 |
| 687 // Holds the page index requested by PDFium while the scroll operation |
| 688 // is being handled (asynchronously). |
| 689 base::Optional<int> in_flight_visible_page_; |
| 690 |
681 // Set to true after FORM_DoDocumentJSAction/FORM_DoDocumentOpenAction have | 691 // Set to true after FORM_DoDocumentJSAction/FORM_DoDocumentOpenAction have |
682 // been called. Only after that can we call FORM_DoPageAAction. | 692 // been called. Only after that can we call FORM_DoPageAAction. |
683 bool called_do_document_action_; | 693 bool called_do_document_action_; |
684 | 694 |
685 // Records parts of form fields that need to be highlighted at next paint, in | 695 // Records parts of form fields that need to be highlighted at next paint, in |
686 // screen coordinates. | 696 // screen coordinates. |
687 std::vector<pp::Rect> form_highlights_; | 697 std::vector<pp::Rect> form_highlights_; |
688 | 698 |
689 // Whether to render in grayscale or in color. | 699 // Whether to render in grayscale or in color. |
690 bool render_grayscale_; | 700 bool render_grayscale_; |
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759 bool GetPDFPageSizeByIndex(const void* pdf_buffer, | 769 bool GetPDFPageSizeByIndex(const void* pdf_buffer, |
760 int pdf_buffer_size, | 770 int pdf_buffer_size, |
761 int page_number, | 771 int page_number, |
762 double* width, | 772 double* width, |
763 double* height) override; | 773 double* height) override; |
764 }; | 774 }; |
765 | 775 |
766 } // namespace chrome_pdf | 776 } // namespace chrome_pdf |
767 | 777 |
768 #endif // PDF_PDFIUM_PDFIUM_ENGINE_H_ | 778 #endif // PDF_PDFIUM_PDFIUM_ENGINE_H_ |
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