690e1c46d2
Separate PDF plugin specific code from other PDF functions. This is a reland of r531339 without any dependencies on r531314. r531314 had issues and caused both CLs to reverted. Change-Id: I129743babe0eda021c6e9824063b8425de226f56 Reviewed-on: https://chromium-review.googlesource.com/912003 Reviewed-by: dsinclair <dsinclair@chromium.org> Commit-Queue: Lei Zhang <thestig@chromium.org> Cr-Commit-Position: refs/heads/master@{#536169}
128 lines
5.0 KiB
C++
128 lines
5.0 KiB
C++
// Copyright (c) 2010 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef PDF_PDF_H_
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#define PDF_PDF_H_
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#include "build/build_config.h"
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#if defined(OS_WIN)
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#include <windows.h>
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#endif
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#if defined(OS_WIN)
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typedef void (*PDFEnsureTypefaceCharactersAccessible)(const LOGFONT* font,
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const wchar_t* text,
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size_t text_length);
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#endif
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namespace chrome_pdf {
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#if defined(OS_WIN)
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// Printing modes - type to convert PDF to for printing
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enum PrintingMode {
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kEmf = 0,
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kTextOnly = 1,
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kPostScript2 = 2,
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kPostScript3 = 3,
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};
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// |pdf_buffer| is the buffer that contains the entire PDF document to be
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// rendered.
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// |buffer_size| is the size of |pdf_buffer| in bytes.
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// |page_number| is the 0-based index of the page to be rendered.
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// |dc| is the device context to render into.
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// |dpi_x| and |dpi_y| is the resolution.
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// |bounds_origin_x|, |bounds_origin_y|, |bounds_width| and |bounds_height|
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// specify a bounds rectangle within the DC in which to render the PDF
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// page.
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// |fit_to_bounds| specifies whether the output should be shrunk to fit the
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// supplied bounds if the page size is larger than the bounds in any
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// dimension. If this is false, parts of the PDF page that lie outside
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// the bounds will be clipped.
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// |stretch_to_bounds| specifies whether the output should be stretched to fit
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// the supplied bounds if the page size is smaller than the bounds in any
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// dimension.
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// If both |fit_to_bounds| and |stretch_to_bounds| are true, then
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// |fit_to_bounds| is honored first.
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// |keep_aspect_ratio| If any scaling is to be done is true, this flag
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// specifies whether the original aspect ratio of the page should be
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// preserved while scaling.
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// |center_in_bounds| specifies whether the final image (after any scaling is
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// done) should be centered within the given bounds.
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// |autorotate| specifies whether the final image should be rotated to match
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// the output bound.
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// Returns false if the document or the page number are not valid.
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bool RenderPDFPageToDC(const void* pdf_buffer,
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int buffer_size,
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int page_number,
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HDC dc,
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int dpi_x,
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int dpi_y,
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int bounds_origin_x,
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int bounds_origin_y,
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int bounds_width,
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int bounds_height,
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bool fit_to_bounds,
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bool stretch_to_bounds,
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bool keep_aspect_ratio,
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bool center_in_bounds,
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bool autorotate);
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void SetPDFEnsureTypefaceCharactersAccessible(
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PDFEnsureTypefaceCharactersAccessible func);
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void SetPDFUseGDIPrinting(bool enable);
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void SetPDFUsePrintMode(int mode);
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#endif // defined(OS_WIN)
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// |page_count| and |max_page_width| are optional and can be NULL.
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// Returns false if the document is not valid.
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bool GetPDFDocInfo(const void* pdf_buffer,
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int buffer_size,
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int* page_count,
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double* max_page_width);
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// Gets the dimensions of a specific page in a document.
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// |pdf_buffer| is the buffer that contains the entire PDF document to be
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// rendered.
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// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
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// |page_number| is the page number that the function will get the dimensions
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// of.
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// |width| is the output for the width of the page in points.
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// |height| is the output for the height of the page in points.
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// Returns false if the document or the page number are not valid.
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bool GetPDFPageSizeByIndex(const void* pdf_buffer,
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int pdf_buffer_size,
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int page_number,
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double* width,
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double* height);
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// Renders PDF page into 4-byte per pixel BGRA color bitmap.
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// |pdf_buffer| is the buffer that contains the entire PDF document to be
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// rendered.
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// |pdf_buffer_size| is the size of |pdf_buffer| in bytes.
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// |page_number| is the 0-based index of the page to be rendered.
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// |bitmap_buffer| is the output buffer for bitmap.
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// |bitmap_width| is the width of the output bitmap.
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// |bitmap_height| is the height of the output bitmap.
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// |dpi_x| and |dpi_y| is the resolution.
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// |autorotate| specifies whether the final image should be rotated to match
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// the output bound.
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// Returns false if the document or the page number are not valid.
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bool RenderPDFPageToBitmap(const void* pdf_buffer,
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int pdf_buffer_size,
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int page_number,
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void* bitmap_buffer,
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int bitmap_width,
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int bitmap_height,
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int dpi_x,
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int dpi_y,
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bool autorotate);
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} // namespace chrome_pdf
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#endif // PDF_PDF_H_
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