Differential D24361 Diff 68042 kcms/style/stylesmodel.cpp

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kcms/style/stylesmodel.cpp

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1​/*
2​ * Copyright (C) 2019 Kai Uwe Broulik <kde@broulik.de>
3​ *
4​ * This program is free software; you can redistribute it and/or
5​ * modify it under the terms of the GNU General Public License as
6​ * published by the Free Software Foundation; either version 2 of
7​ * the License or (at your option) version 3 or any later version
8​ * accepted by the membership of KDE e.V. (or its successor approved
9​ * by the membership of KDE e.V.), which shall act as a proxy
10​ * defined in Section 14 of version 3 of the license.
11​ *
12​ * This program is distributed in the hope that it will be useful,
13​ * but WITHOUT ANY WARRANTY; without even the implied warranty of
14​ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15​ * GNU General Public License for more details.
16​ *
17​ * You should have received a copy of the GNU General Public License
18​ * along with this program. If not, see <http://www.gnu.org/licenses/>.
19​ */
20​
21​#include "stylesmodel.h"
22​
23​#include <QCollator>
24​#include <QDir>
25​#include <QStandardPaths>
26​#include <QStyleFactory>
27​
28​#include <KConfig>
29​#include <KConfigGroup>
30​
31​#include <algorithm>
32​
33​StylesModel::StylesModel(QObject *parent) : QAbstractListModel(parent)
34​{
35​
36​}
37​
38​StylesModel::~StylesModel() = default;
39​
40​int StylesModel::rowCount(const QModelIndex &parent) const
41​{
42​ if (parent.isValid()) {
43​ return 0;
44​ }
45​
46​ return m_data.count();
47​}
48​
49​QVariant StylesModel::data(const QModelIndex &index, int role) const
50​{
51​ if (!checkIndex(index)) {
52​ return QVariant();
53​ }
54​
55​ const auto &item = m_data.at(index.row());
56​
57​ switch (role) {
58​ case Qt::DisplayRole:
59​ if (!item.display.isEmpty()) {
60​ return item.display;
61​ }
62​ return item.styleName;
63​ case StyleNameRole: return item.styleName;
64​ case DescriptionRole: return item.description;
65​ case ConfigurableRole: return !item.configPage.isEmpty();
66​ }
67​
68​ return QVariant();
69​}
70​
71​QHash<int, QByteArray> StylesModel::roleNames() const
72​{
73​ return {
74​ {Qt::DisplayRole, QByteArrayLiteral("display")},
75​ {StyleNameRole, QByteArrayLiteral("styleName")},
76​ {DescriptionRole, QByteArrayLiteral("description")},
77​ {ConfigurableRole, QByteArrayLiteral("configurable")}
78​ };
79​}
80​
81​QString StylesModel::selectedStyle() const
82​{
83​ return m_selectedStyle;
84​}
85​
86​void StylesModel::setSelectedStyle(const QString &style)
87​{
88​ if (m_selectedStyle == style) {
89​ return;
90​ }
91​
92​ const bool firstTime = m_selectedStyle.isNull();
93​ m_selectedStyle = style;
94​
95​ if (!firstTime) {
96​ emit selectedStyleChanged(style);
97​ }
98​ emit selectedStyleIndexChanged();
99​}
100​
101​int StylesModel::indexOfStyle(const QString &style) const
102​{
103​ auto it = std::find_if(m_data.begin(), m_data.end(), [&style](const StylesModelData &item) {
104​ return item.styleName == style;
105​ });
106​
107​ if (it != m_data.end()) {
108​ return std::distance(m_data.begin(), it);
109​ }
110​
111​ return -1;
112​}
113​
114​int StylesModel::selectedStyleIndex() const
115​{
116​ return indexOfStyle(m_selectedStyle);
117​}
118​
119​QString StylesModel::styleConfigPage(const QString &style) const
120​{
121​ const int idx = indexOfStyle(style);
122​ if (idx == -1) {
123​ return QString();
124​ }
125​
126​ return m_data.at(idx).configPage;
127​}
128​
129​void StylesModel::load()
130​{
131​ beginResetModel();
132​
133​ const int oldCount = m_data.count();
134​
135​ m_data.clear();
136​
137​ // Combines the info we get from QStyleFactory and our themerc files
138​ QHash<QString, StylesModelData> styleData;
139​
140​ const QStringList allStyles = QStyleFactory::keys();
141​ for (const QString &styleName : allStyles) {
142​ auto &item = styleData[styleName];
143​ item.styleName = styleName;
144​ }
145​
146​ QStringList themeFiles;
147​
148​ const QStringList themeDirs = QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("kstyle/themes"), QStandardPaths::LocateDirectory);
149​ for (const QString &dir : themeDirs) {
150​ const QStringList fileNames = QDir(dir).entryList(QStringList{QStringLiteral("*.themerc")});
151​ for (const QString &file : fileNames) {
152​ const QString suffixedFileName = QLatin1String("kstyle/themes/") + file;
153​ if (!themeFiles.contains(suffixedFileName)) {
154​ themeFiles.append(suffixedFileName);
155​ }
156​ }
157​ }
158​
159​ std::transform(themeFiles.begin(), themeFiles.end(), themeFiles.begin(), [](const QString &item) {
160​ return QStandardPaths::locate(QStandardPaths::GenericDataLocation, item);
161​ });
162​
163​ for (const QString &file : themeFiles) {
164​ KConfig config(file, KConfig::SimpleConfig);
165​ if (!config.hasGroup("KDE") || !config.hasGroup("Misc")) {
166​ continue;
167​ }
168​
169​ KConfigGroup kdeGroup = config.group("KDE");
170​
171​ const QString styleName = kdeGroup.readEntry("WidgetStyle", QString());
172​ if (styleName.isEmpty()) {
173​ continue;
174​ }
175​
176​ auto it = styleData.find(styleName);
177​ if (it == styleData.end()) {
178​ continue;
179​ }
180​
181​ auto &item = *it;
182​
183​ KConfigGroup desktopEntryGroup = config.group("Desktop Entry");
184​ if (desktopEntryGroup.readEntry("Hidden", false)) {
185​ // Don't list hidden styles
186​ styleData.remove(styleName);
187​ continue;
188​ }
189​
190​ KConfigGroup miscGroup = config.group("Misc");
191​
192​ item.display = miscGroup.readEntry("Name");
193​ item.description = miscGroup.readEntry("Comment");
194​ item.configPage = miscGroup.readEntry("ConfigPage");
195​ }
196​
197​ m_data = styleData.values().toVector();
198​
199​ QCollator collator;
200​ std::sort(m_data.begin(), m_data.end(), [&collator](const StylesModelData &a, const StylesModelData &b) {
201​ const QString aDisplay = !a.display.isEmpty() ? a.display : a.styleName;
202​ const QString bDisplay = !b.display.isEmpty() ? b.display : b.styleName;
203​ return collator.compare(aDisplay, bDisplay) < 0;
204​ });
205​
206​ endResetModel();
207​
208​ // an item might have been added before the currently selected one
209​ if (oldCount != m_data.count()) {
210​ emit selectedStyleIndexChanged();
211​ }
212​}