blob: 8e9b8563655c5e015f5a6916fafdb52ce504f1e7 [file] [log] [blame]
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <optional>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "build/build_config.h"
#include "third_party/pdfium/public/cpp/fpdf_scopers.h"
#include "third_party/pdfium/public/fpdfview.h"
namespace blink {
struct WebPrintParams;
} // namespace blink
namespace gfx {
class Rect;
class Size;
} // namespace gfx
namespace chrome_pdf {
class PDFiumEngine;
struct FlattenPdfResult;
class PDFiumPrint {
explicit PDFiumPrint(PDFiumEngine* engine);
PDFiumPrint(const PDFiumPrint&) = delete;
PDFiumPrint& operator=(const PDFiumPrint&) = delete;
// Flattens the `doc`.
// On success, returns the flattened version of `doc` as a vector and the
// number of pages inside FlattenPdfResult.
// On failure, returns std::nullopt.
static std::optional<FlattenPdfResult> CreateFlattenedPdf(
ScopedFPDFDocument doc);
// Performs N-up PDF generation for `doc` based on `pages_per_sheet`,
// `page_size`, and `printable_area`.
// On success, returns the N-up version of `doc` as a vector.
// On failure, returns an empty vector.
static std::vector<uint8_t> CreateNupPdf(ScopedFPDFDocument doc,
size_t pages_per_sheet,
const gfx::Size& page_size,
const gfx::Rect& printable_area);
// Check the source doc orientation. Returns true if the doc is landscape.
// For now the orientation of the doc is determined by its first page's
// orientation. Improvement can be added in the future to better determine
// the orientation of the source docs that have mixed orientation.
// TODO(xlou): rotate pages if the source doc has mixed orientation. So that
// the orientation of all pages of the doc are uniform. Pages of square size
// will not be rotated.
static bool IsSourcePdfLandscape(FPDF_DOCUMENT doc);
static void FitContentsToPrintableArea(FPDF_DOCUMENT doc,
const gfx::Size& page_size,
const gfx::Rect& printable_area);
std::vector<uint8_t> PrintPagesAsPdf(
const std::vector<int>& page_numbers,
const blink::WebPrintParams& print_params);
ScopedFPDFDocument CreatePrintPdf(const std::vector<int>& page_numbers,
const blink::WebPrintParams& print_params);
ScopedFPDFDocument CreateRasterPdf(ScopedFPDFDocument doc, int dpi);
ScopedFPDFDocument CreateSinglePageRasterPdf(FPDF_PAGE page_to_print,
int dpi);
const raw_ptr<PDFiumEngine> engine_;
} // namespace chrome_pdf