| // Copyright (c) 2010 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef PDF_PDF_H_ |
| #define PDF_PDF_H_ |
| |
| #include "ppapi/c/ppb.h" |
| #include "ppapi/cpp/module.h" |
| |
| namespace chrome_pdf { |
| |
| class PDFModule : public pp::Module { |
| public: |
| PDFModule(); |
| ~PDFModule() override; |
| |
| // pp::Module implementation. |
| bool Init() override; |
| pp::Instance* CreateInstance(PP_Instance instance) override; |
| }; |
| |
| int PPP_InitializeModule(PP_Module module_id, |
| PPB_GetInterface get_browser_interface); |
| void PPP_ShutdownModule(); |
| const void* PPP_GetInterface(const char* interface_name); |
| |
| #if defined(OS_WIN) |
| // |pdf_buffer| is the buffer that contains the entire PDF document to be |
| // rendered. |
| // |buffer_size| is the size of |pdf_buffer| in bytes. |
| // |page_number| is the 0-based index of the page to be rendered. |
| // |dc| is the device context to render into. |
| // |dpi| and |dpi_y| is the resolution. If the value is -1, the dpi from the DC |
| // will be used. |
| // |bounds_origin_x|, |bounds_origin_y|, |bounds_width| and |bounds_height| |
| // specify a bounds rectangle within the DC in which to render the PDF |
| // page. |
| // |fit_to_bounds| specifies whether the output should be shrunk to fit the |
| // supplied bounds if the page size is larger than the bounds in any |
| // dimension. If this is false, parts of the PDF page that lie outside |
| // the bounds will be clipped. |
| // |stretch_to_bounds| specifies whether the output should be stretched to fit |
| // the supplied bounds if the page size is smaller than the bounds in any |
| // dimension. |
| // If both |fit_to_bounds| and |stretch_to_bounds| are true, then |
| // |fit_to_bounds| is honored first. |
| // |keep_aspect_ratio| If any scaling is to be done is true, this flag |
| // specifies whether the original aspect ratio of the page should be |
| // preserved while scaling. |
| // |center_in_bounds| specifies whether the final image (after any scaling is |
| // done) should be centered within the given bounds. |
| // |autorotate| specifies whether the final image should be rotated to match |
| // the output bound. |
| // Returns false if the document or the page number are not valid. |
| bool RenderPDFPageToDC(const void* pdf_buffer, |
| int buffer_size, |
| int page_number, |
| HDC dc, |
| int dpi, |
| int bounds_origin_x, |
| int bounds_origin_y, |
| int bounds_width, |
| int bounds_height, |
| bool fit_to_bounds, |
| bool stretch_to_bounds, |
| bool keep_aspect_ratio, |
| bool center_in_bounds, |
| bool autorotate); |
| #endif |
| // |page_count| and |max_page_width| are optional and can be NULL. |
| // Returns false if the document is not valid. |
| bool GetPDFDocInfo(const void* pdf_buffer, |
| int buffer_size, int* page_count, |
| double* max_page_width); |
| |
| // Gets the dimensions of a specific page in a document. |
| // |pdf_buffer| is the buffer that contains the entire PDF document to be |
| // rendered. |
| // |pdf_buffer_size| is the size of |pdf_buffer| in bytes. |
| // |page_number| is the page number that the function will get the dimensions |
| // of. |
| // |width| is the output for the width of the page in points. |
| // |height| is the output for the height of the page in points. |
| // Returns false if the document or the page number are not valid. |
| bool GetPDFPageSizeByIndex(const void* pdf_buffer, |
| int pdf_buffer_size, int page_number, |
| double* width, double* height); |
| |
| // Renders PDF page into 4-byte per pixel BGRA color bitmap. |
| // |pdf_buffer| is the buffer that contains the entire PDF document to be |
| // rendered. |
| // |pdf_buffer_size| is the size of |pdf_buffer| in bytes. |
| // |page_number| is the 0-based index of the page to be rendered. |
| // |bitmap_buffer| is the output buffer for bitmap. |
| // |bitmap_width| is the width of the output bitmap. |
| // |bitmap_height| is the height of the output bitmap. |
| // |dpi| is the resolutions. |
| // |autorotate| specifies whether the final image should be rotated to match |
| // the output bound. |
| // Returns false if the document or the page number are not valid. |
| bool RenderPDFPageToBitmap(const void* pdf_buffer, |
| int pdf_buffer_size, |
| int page_number, |
| void* bitmap_buffer, |
| int bitmap_width, |
| int bitmap_height, |
| int dpi, |
| bool autorotate); |
| |
| } // namespace chrome_pdf |
| |
| #endif // PDF_PDF_H_ |