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// 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_
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