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chromium / chromium / src / 017c4eef7b9a65b77eb5dd9317d8caf743c1958a / . / printing / units.h
blob: 24a416a66cc4ca8f370d619eb09bb8b4c00f4ad5 [file] [log] [blame]
Avi Drissmandb497b32022-09-15 19:47:28[diff] [blame]1// Copyright 2011 The Chromium Authors
license.botbf09a502008-08-24 00:55:55[diff] [blame]2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]4
maruel@chromium.org4ae30d082009-02-20 17:55:55[diff] [blame]5#ifndef PRINTING_UNITS_H_
6#define PRINTING_UNITS_H_
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]7
Alan Screen9347cae2021-04-27 18:11:24[diff] [blame]8#include "base/component_export.h"
Andy Phanf864aac2023-02-22 00:12:29[diff] [blame]9#include "build/build_config.h"
darin@chromium.org69f5b1e62011-09-01 06:34:04[diff] [blame]10
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]11namespace printing {
12
Lei Zhangd11ab162018-06-26 04:28:50[diff] [blame]13// Length of an inch in 0.001mm unit.
14constexpr int kMicronsPerInch = 25400;
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]15
Andy Phan24b783d2023-01-04 17:43:45[diff] [blame]16// A micron is a thousandth of a mm.
17constexpr int kMicronsPerMm = 1000;
18
Andy Phan37fb8722023-02-01 19:22:25[diff] [blame]19// Length of a PWG unit in 0.001mm unit.
20constexpr int kMicronsPerPwgUnit = kMicronsPerMm / 100;
21
Vladislav Kuzkokove2199102018-02-20 16:25:13[diff] [blame]22// Mil is a thousandth of an inch.
23constexpr float kMicronsPerMil = 25.4f;
24constexpr int kMilsPerInch = 1000;
25
hamaji@chromium.org4ebf5d12010-06-28 09:46:00[diff] [blame]26// Length of an inch in CSS's 1pt unit.
27// http://dev.w3.org/csswg/css3-values/#absolute-length-units-cm-mm.-in-pt-pc
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]28constexpr int kPointsPerInch = 72;
hamaji@chromium.org4ebf5d12010-06-28 09:46:00[diff] [blame]29
30// Length of an inch in CSS's 1px unit.
31// http://dev.w3.org/csswg/css3-values/#the-px-unit
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]32constexpr int kPixelsPerInch = 96;
hamaji@chromium.org4ebf5d12010-06-28 09:46:00[diff] [blame]33
Andy Phanf864aac2023-02-22 00:12:29[diff] [blame]34#if BUILDFLAG(IS_MAC)
35constexpr int kDefaultMacDpi = 72;
36#endif // BUILDFLAG(IS_MAC)
37
Lei Zhang53fefd82023-06-06 01:24:11[diff] [blame]38// DPI used for Save to PDF. Also used as the default DPI in various use cases
39// where there is no specified DPI.
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]40constexpr int kDefaultPdfDpi = 300;
vitalybuka@chromium.org4c9054b2013-11-04 18:34:29[diff] [blame]41
42// LETTER: 8.5 x 11 inches
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]43constexpr float kLetterWidthInch = 8.5f;
44constexpr float kLetterHeightInch = 11.0f;
vitalybuka@chromium.org4c9054b2013-11-04 18:34:29[diff] [blame]45
46// LEGAL: 8.5 x 14 inches
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]47constexpr float kLegalWidthInch = 8.5f;
48constexpr float kLegalHeightInch = 14.0f;
vitalybuka@chromium.org4c9054b2013-11-04 18:34:29[diff] [blame]49
50// A4: 8.27 x 11.69 inches
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]51constexpr float kA4WidthInch = 8.27f;
52constexpr float kA4HeightInch = 11.69f;
vitalybuka@chromium.org4c9054b2013-11-04 18:34:29[diff] [blame]53
54// A3: 11.69 x 16.54 inches
Daniel Hosseiniand8f4bc72019-12-16 20:13:17[diff] [blame]55constexpr float kA3WidthInch = 11.69f;
56constexpr float kA3HeightInch = 16.54f;
vitalybuka@chromium.org4c9054b2013-11-04 18:34:29[diff] [blame]57
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]58// Converts from one unit system to another using integer arithmetics.
Alan Screen04f4dfe2021-04-29 07:05:25[diff] [blame]59COMPONENT_EXPORT(PRINTING_BASE)
Xianzhu Wang805d7452022-01-19 06:55:33[diff] [blame]60int ConvertUnit(float value, int old_unit, int new_unit);
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]61
Xianzhu Wang805d7452022-01-19 06:55:33[diff] [blame]62// Converts from one unit system to another using floats.
Alan Screen04f4dfe2021-04-29 07:05:25[diff] [blame]63COMPONENT_EXPORT(PRINTING_BASE)
Xianzhu Wang805d7452022-01-19 06:55:33[diff] [blame]64float ConvertUnitFloat(float value, float old_unit, float new_unit);
aayushkumar@chromium.org55b23a02011-08-17 23:09:36[diff] [blame]65
initial.commit09911bf2008-07-26 23:55:29[diff] [blame]66} // namespace printing
67
maruel@chromium.org4ae30d082009-02-20 17:55:55[diff] [blame]68#endif // PRINTING_UNITS_H_