// Copyright 2018 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. #include "printing/nup_parameters.h" #include #include #include "base/check.h" #include "base/notreached.h" namespace printing { NupParameters::NupParameters(int pages_per_sheet, bool is_source_landscape) { SetParameters(pages_per_sheet, is_source_landscape); } // static bool NupParameters::IsSupported(int pages_per_sheet) { // Supports N-up: 1 2 4 6 9 16 return pages_per_sheet == 1 || pages_per_sheet == 2 || pages_per_sheet == 4 || pages_per_sheet == 6 || pages_per_sheet == 9 || pages_per_sheet == 16; } void NupParameters::SetParameters(int pages_per_sheet, bool is_source_landscape) { DCHECK(IsSupported(pages_per_sheet)); switch (pages_per_sheet) { case 1: num_pages_on_x_axis_ = 1; num_pages_on_y_axis_ = 1; break; case 2: if (!is_source_landscape) { num_pages_on_x_axis_ = 2; num_pages_on_y_axis_ = 1; landscape_ = true; } else { num_pages_on_x_axis_ = 1; num_pages_on_y_axis_ = 2; } break; case 6: if (!is_source_landscape) { num_pages_on_x_axis_ = 3; num_pages_on_y_axis_ = 2; landscape_ = true; } else { num_pages_on_x_axis_ = 2; num_pages_on_y_axis_ = 3; } break; case 4: case 9: case 16: num_pages_on_x_axis_ = std::sqrt(pages_per_sheet); num_pages_on_y_axis_ = std::sqrt(pages_per_sheet); if (is_source_landscape) landscape_ = true; break; default: NOTREACHED(); } } } // namespace printing