diff options
| -rw-r--r-- | pdf/pdf_engine.h | 5 | ||||
| -rw-r--r-- | pdf/pdfium/pdfium_engine.cc | 41 | ||||
| -rw-r--r-- | pdf/pdfium/pdfium_engine.h | 7 |
3 files changed, 50 insertions, 3 deletions
diff --git a/pdf/pdf_engine.h b/pdf/pdf_engine.h index c5d33c8..7df4bff2 100644 --- a/pdf/pdf_engine.h +++ b/pdf/pdf_engine.h @@ -222,6 +222,7 @@ class PDFEngine { virtual void RotateCounterclockwise() = 0; virtual std::string GetSelectedText() = 0; virtual std::string GetLinkAtPosition(const pp::Point& point) = 0; + virtual bool IsSelecting() = 0; // Checks the permissions associated with this document. virtual bool HasPermission(DocumentPermission permission) const = 0; virtual void SelectAll() = 0; @@ -229,6 +230,8 @@ class PDFEngine { virtual int GetNumberOfPages() = 0; // Gets the 0-based page number of |destination|, or -1 if it does not exist. virtual int GetNamedDestinationPage(const std::string& destination) = 0; + // Gets the index of the first visible page, or -1 if none are visible. + virtual int GetFirstVisiblePage() = 0; // Gets the index of the most visible page, or -1 if none are visible. virtual int GetMostVisiblePage() = 0; // Gets the rectangle of the page including shadow. @@ -241,6 +244,8 @@ class PDFEngine { // Gets the offset of the vertical scrollbar from the top in document // coordinates. virtual int GetVerticalScrollbarYPosition() = 0; + // Paints page thumbnail to the ImageData. + virtual void PaintThumbnail(pp::ImageData* image_data, int index) = 0; // Set color / grayscale rendering modes. virtual void SetGrayscale(bool grayscale) = 0; // Callback for timer that's set with ScheduleCallback(). diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc index 87c7dcc..83291bc 100644 --- a/pdf/pdfium/pdfium_engine.cc +++ b/pdf/pdfium/pdfium_engine.cc @@ -534,6 +534,7 @@ PDFiumEngine::PDFiumEngine(PDFEngine::Client* client) fpdf_availability_(NULL), next_timer_id_(0), last_page_mouse_down_(-1), + first_visible_page_(-1), most_visible_page_(-1), called_do_document_action_(false), render_grayscale_(false), @@ -2266,6 +2267,10 @@ std::string PDFiumEngine::GetLinkAtPosition(const pp::Point& point) { return url; } +bool PDFiumEngine::IsSelecting() { + return selecting_; +} + bool PDFiumEngine::HasPermission(DocumentPermission permission) const { // PDF 1.7 spec, section 3.5.2 says: "If the revision number is 2 or greater, // the operations to which user access can be controlled are as follows: ..." @@ -2334,6 +2339,11 @@ int PDFiumEngine::GetNamedDestinationPage(const std::string& destination) { return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1; } +int PDFiumEngine::GetFirstVisiblePage() { + CalculateVisiblePages(); + return first_visible_page_; +} + int PDFiumEngine::GetMostVisiblePage() { CalculateVisiblePages(); return most_visible_page_; @@ -2350,6 +2360,26 @@ pp::Rect PDFiumEngine::GetPageContentsRect(int index) { return GetScreenRect(pages_[index]->rect()); } +void PDFiumEngine::PaintThumbnail(pp::ImageData* image_data, int index) { + FPDF_BITMAP bitmap = FPDFBitmap_CreateEx( + image_data->size().width(), image_data->size().height(), + FPDFBitmap_BGRx, image_data->data(), image_data->stride()); + + if (pages_[index]->available()) { + FPDFBitmap_FillRect(bitmap, 0, 0, image_data->size().width(), + image_data->size().height(), 0xFFFFFFFF); + + FPDF_RenderPageBitmap( + bitmap, pages_[index]->GetPage(), 0, 0, image_data->size().width(), + image_data->size().height(), 0, GetRenderingFlags()); + } else { + FPDFBitmap_FillRect(bitmap, 0, 0, image_data->size().width(), + image_data->size().height(), kPendingPageColor); + } + + FPDFBitmap_Destroy(bitmap); +} + void PDFiumEngine::SetGrayscale(bool grayscale) { render_grayscale_ = grayscale; } @@ -2678,10 +2708,15 @@ void PDFiumEngine::CalculateVisiblePages() { // screen coordinates. form_highlights_.clear(); - int most_visible_page = visible_pages_.empty() ? 0 : visible_pages_.front(); - DCHECK_GE(most_visible_page, 0); + if (visible_pages_.size() == 0) + first_visible_page_ = -1; + else + first_visible_page_ = visible_pages_.front(); + + int most_visible_page = first_visible_page_; // Check if the next page is more visible than the first one. - if (!pages_.empty() && + if (most_visible_page != -1 && + pages_.size() > 0 && most_visible_page < static_cast<int>(pages_.size()) - 1) { pp::Rect rc_first = visible_rect.Intersect(GetPageScreenRect(most_visible_page)); diff --git a/pdf/pdfium/pdfium_engine.h b/pdf/pdfium/pdfium_engine.h index e0b8af5..88a2575 100644 --- a/pdf/pdfium/pdfium_engine.h +++ b/pdf/pdfium/pdfium_engine.h @@ -77,16 +77,19 @@ class PDFiumEngine : public PDFEngine, void RotateCounterclockwise() override; std::string GetSelectedText() override; std::string GetLinkAtPosition(const pp::Point& point) override; + bool IsSelecting() override; bool HasPermission(DocumentPermission permission) const override; void SelectAll() override; int GetNumberOfPages() override; pp::VarArray GetBookmarks() override; int GetNamedDestinationPage(const std::string& destination) override; + int GetFirstVisiblePage() override; int GetMostVisiblePage() override; pp::Rect GetPageRect(int index) override; pp::Rect GetPageContentsRect(int index) override; pp::Rect GetPageScreenRect(int page_index) const override; int GetVerticalScrollbarYPosition() override { return position_.y(); } + void PaintThumbnail(pp::ImageData* image_data, int index) override; void SetGrayscale(bool grayscale) override; void OnCallback(int id) override; std::string GetPageAsJSON(int index) override; @@ -667,6 +670,10 @@ class PDFiumEngine : public PDFEngine, // Holds the page index of the last page that the mouse clicked on. int last_page_mouse_down_; + // Holds the page index of the first visible page; refreshed by calling + // CalculateVisiblePages() + int first_visible_page_; + // Holds the page index of the most visible page; refreshed by calling // CalculateVisiblePages() int most_visible_page_; |