Lomiri
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DisplayConfigurationStorage.cpp
1/*
2 * Copyright (C) 2017 Canonical Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; version 3.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program. If not, see <http://www.gnu.org/licenses/>.
15 */
16
17#include "DisplayConfigurationStorage.h"
18
19#include <QFile>
20#include <QStandardPaths>
21#include <QJsonObject>
22#include <QJsonDocument>
23
24namespace {
25
26#ifndef USE_MIROIL
27namespace miroil = miral;
28#endif
29
30inline QString stringFromEdid(const miroil::Edid& edid)
31{
32 QString str;
33 str += QString::fromStdString(edid.vendor);
34 str += QString("%1%2").arg(edid.product_code).arg(edid.serial_number);
35
36 for (int i = 0; i < 4; i++) {
37 str += QString::fromStdString(edid.descriptors[i].string_value());
38 }
39 return str;
40}
41
42}
43
44DisplayConfigurationStorage::DisplayConfigurationStorage()
45{
46}
47
48void DisplayConfigurationStorage::save(const miroil::DisplayId &displayId, const miroil::DisplayConfigurationOptions &options)
49{
50 const QString dbPath = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QStringLiteral("/lomiri/");
51 QFile f(dbPath + stringFromEdid(displayId.edid) + ".edid");
52
53 QJsonObject json;
54 if (options.used.is_set()) json.insert("used", options.used.value());
55 if (options.clone_output_index.is_set()) json.insert("clone_output_index", static_cast<int>(options.clone_output_index.value()));
56 if (options.mode.is_set()) {
57 auto const& mode = options.mode.value();
58
59 QString sz(QString("%1x%2").arg(mode.size.width.as_int()).arg(mode.size.height.as_int()));
60 QJsonObject jsonMode({
61 {"size", sz},
62 {"refresh_rate", mode.refresh_rate }
63 });
64 json.insert("mode", jsonMode);
65 }
66 if (options.orientation.is_set()) json.insert("orientation", static_cast<int>(options.orientation.value()));
67 if (options.form_factor.is_set()) json.insert("form_factor", static_cast<int>(options.form_factor.value()));
68 if (options.scale.is_set()) json.insert("scale", options.scale.value());
69
70 if (f.open(QIODevice::WriteOnly)) {
71 QJsonDocument saveDoc(json);
72 f.write(saveDoc.toJson());
73 }
74}
75
76bool DisplayConfigurationStorage::load(const miroil::DisplayId &displayId, miroil::DisplayConfigurationOptions &options) const
77{
78 const QString dbPath = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + QStringLiteral("/lomiri/");
79 QFile f(dbPath + stringFromEdid(displayId.edid) + ".edid");
80
81 if (f.open(QIODevice::ReadOnly)) {
82 QByteArray saveData = f.readAll();
83 QJsonDocument loadDoc(QJsonDocument::fromJson(saveData));
84
85 QJsonObject json(loadDoc.object());
86 if (json.contains("used")) options.used = json["used"].toBool();
87 if (json.contains("clone_output_index")) options.clone_output_index = json["clone_output_index"].toInt();
88 if (json.contains("mode")) {
89 QJsonObject jsonMode = json["mode"].toObject();
90
91 if (jsonMode.contains("size") && jsonMode.contains("refresh_rate")) {
92 QString sz(jsonMode["size"].toString());
93#if QT_VERSION >= QT_VERSION_CHECK(5, 14, 0)
94 QStringList geo = sz.split("x", Qt::SkipEmptyParts);
95#else
96 QStringList geo = sz.split("x", QString::SkipEmptyParts);
97#endif
98 if (geo.count() == 2) {
99 miroil::DisplayConfigurationOptions::DisplayMode mode;
100 mode.size = mir::geometry::Size(geo[0].toInt(), geo[1].toInt());
101 mode.refresh_rate = jsonMode["refresh_rate"].toDouble();
102 options.mode = mode;
103 }
104 }
105 }
106 if (json.contains("orientation")) options.orientation = static_cast<MirOrientation>(json["orientation"].toInt());
107 if (json.contains("form_factor")) options.form_factor = static_cast<MirFormFactor>(json["form_factor"].toInt());
108 if (json.contains("scale")) options.scale = json["form_factor"].toDouble();
109
110 return true;
111 }
112
113 return false;
114}