Qt Utilities  6.4.1
Common Qt related C++ classes and routines used by my applications such as dialogs, widgets and models
qtconfigarguments.cpp
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1 #include "./qtconfigarguments.h"
2 
3 #include <c++utilities/conversion/stringconversion.h>
4 #include <c++utilities/io/ansiescapecodes.h>
5 
6 #include <QFont>
7 #include <QIcon>
8 #include <QLocale>
9 #include <QString>
10 #ifdef QT_UTILITIES_GUI_QTWIDGETS
11 #include <QApplication>
12 #include <QStyle>
13 #include <QStyleFactory>
14 #else
15 #include <QGuiApplication>
16 #endif
17 
18 #include <initializer_list>
19 #include <iostream>
20 
21 using namespace std;
22 using namespace CppUtilities::EscapeCodes;
23 
27 namespace CppUtilities {
28 
32 QtConfigArguments::QtConfigArguments()
33  : m_qtWidgetsGuiArg("qt-widgets-gui", 'g', "shows a Qt widgets based graphical user interface")
34  , m_qtQuickGuiArg("qt-quick-gui", 'q', "shows a Qt quick based graphical user interface")
35  , m_lngArg("lang", 'l', "sets the language for the Qt GUI")
36  , m_qmlDebuggerArg("qmljsdebugger", 'q',
37  "enables QML debugging (see "
38  "http://doc.qt.io/qt-5/"
39  "qtquick-debugging.html)")
40  , m_widgetsStyleArg("widgets-style", '\0', "sets the Qt Widgets style")
41  , m_quickControls2StyleArg("qqc2-style", '\0', "sets the Qt Quick Controls 2 style")
42  , m_iconThemeArg("icon-theme", '\0',
43  "sets the icon theme and additional "
44  "theme search paths for the Qt GUI")
45  , m_fontArg("font", '\0', "sets the font family and size (point) for the Qt GUI")
46  , m_libraryPathsArg("library-paths", '\0',
47  "sets the list of directories to search when loading "
48  "libraries (all existing paths will be deleted)")
49  , m_platformThemeArg("platformtheme", '\0', "specifies the Qt platform theme to be used")
50  , m_sceneGraphRenderLoopArg("scene-graph-render-loop", '\0', "sets the loop for the Qt Quick Scene Graph OpenGL Renderer")
51 {
52  // language
53  m_lngArg.setValueNames({ "language" });
54  m_lngArg.setRequiredValueCount(1);
55  m_lngArg.setRequired(false);
56  m_lngArg.setCombinable(true);
57  // qml debugger (handled by Qt, just to let the parser know of it)
58  m_qmlDebuggerArg.setValueNames({ "port:<port_from>[,port_to][,host:<ip address>][,block]" });
59  m_qmlDebuggerArg.setRequiredValueCount(1);
60  m_qmlDebuggerArg.setCombinable(true);
61  // appearance
62  m_widgetsStyleArg.setValueNames({ "breeze/cleanlooks/fusion/kvantum/oxygen/adwaita/windows/..." });
63  m_widgetsStyleArg.setRequiredValueCount(1);
64  m_widgetsStyleArg.setCombinable(true);
65  m_widgetsStyleArg.setEnvironmentVariable("QT_STYLE_OVERRIDE");
66  m_quickControls2StyleArg.setValueNames({ "default/material/universal/org.kde.desktop/..." });
67  m_quickControls2StyleArg.setRequiredValueCount(1);
68  m_quickControls2StyleArg.setCombinable(true);
69  m_quickControls2StyleArg.setEnvironmentVariable("QT_QUICK_CONTROLS_STYLE");
70  m_iconThemeArg.setValueNames({ "theme name", "search path 1", "search path 2" });
71  m_iconThemeArg.setRequiredValueCount(Argument::varValueCount);
72  m_iconThemeArg.setCombinable(true);
73  m_iconThemeArg.setEnvironmentVariable("ICON_THEME_SEARCH_PATH and ICON_THEME");
74  m_fontArg.setValueNames({ "name", "size" });
75  m_fontArg.setRequiredValueCount(2);
76  m_fontArg.setCombinable(true);
77  m_libraryPathsArg.setValueNames({ "path 1", "path 2" });
78  m_libraryPathsArg.setRequiredValueCount(Argument::varValueCount);
79  m_libraryPathsArg.setCombinable(true);
80  m_platformThemeArg.setRequiredValueCount(1);
81  m_platformThemeArg.setCombinable(true);
82  m_platformThemeArg.setValueNames({ "qt5ct/kde/..." });
83  m_platformThemeArg.setPreDefinedCompletionValues("kde gnome "
84 #if QT_VERSION_MAJOR == 5
85  "qt5ct"
86 #elif QT_VERSION_MAJOR == 6
87  "qt6ct"
88 #endif
89  );
90  m_platformThemeArg.setEnvironmentVariable("QT_QPA_PLATFORMTHEME");
91  m_sceneGraphRenderLoopArg.setRequiredValueCount(1);
92  m_sceneGraphRenderLoopArg.setCombinable(true);
93  m_sceneGraphRenderLoopArg.setValueNames({ "basic/windows/threaded" });
94  m_sceneGraphRenderLoopArg.setPreDefinedCompletionValues("basic windows threaded");
95  m_sceneGraphRenderLoopArg.setEnvironmentVariable("QSG_RENDER_LOOP");
96  m_qtWidgetsGuiArg.setSubArguments(
97  { &m_lngArg, &m_qmlDebuggerArg, &m_widgetsStyleArg, &m_iconThemeArg, &m_fontArg, &m_libraryPathsArg, &m_platformThemeArg });
98  m_qtQuickGuiArg.setSubArguments({ &m_lngArg, &m_qmlDebuggerArg, &m_quickControls2StyleArg, &m_iconThemeArg, &m_fontArg, &m_libraryPathsArg,
99  &m_platformThemeArg, &m_sceneGraphRenderLoopArg });
100  m_qtWidgetsGuiArg.setDenotesOperation(true);
101  m_qtQuickGuiArg.setDenotesOperation(true);
102 #if defined(QT_UTILITIES_GUI_QTWIDGETS)
103  m_qtWidgetsGuiArg.setImplicit(true);
104 #elif defined(QT_UTILITIES_GUI_QTQUICK)
105  m_qtQuickGuiArg.setImplicit(true);
106 #endif
107 }
108 
115 void QtConfigArguments::applySettings(bool preventApplyingDefaultFont) const
116 {
117  if (m_lngArg.isPresent()) {
118  QLocale::setDefault(QLocale(QString::fromLocal8Bit(m_lngArg.values().front())));
119  }
120 #ifdef QT_UTILITIES_GUI_QTWIDGETS
121  if (m_widgetsStyleArg.isPresent()) {
122  if (QStyle *const style = QStyleFactory::create(QString::fromLocal8Bit(m_widgetsStyleArg.values().front()))) {
123  QApplication::setStyle(style);
124  } else {
125  cerr << Phrases::Warning << "Can not find the specified Qt Widgets style." << Phrases::EndFlush;
126  }
127  }
128 #endif
129  if (m_iconThemeArg.isPresent()) {
130  auto i = m_iconThemeArg.values().cbegin(), end = m_iconThemeArg.values().end();
131  if (i != end) {
132  QIcon::setThemeName(QString::fromLocal8Bit(*i));
133  if (++i != end) {
134  QStringList searchPaths;
135  searchPaths.reserve(static_cast<QStringList::size_type>(m_iconThemeArg.values().size() - 1));
136  for (; i != end; ++i) {
137  searchPaths << QString::fromLocal8Bit(*i);
138  }
139  searchPaths << QStringLiteral(":/icons");
140  QIcon::setThemeSearchPaths(searchPaths);
141  }
142  }
143  } else {
144  if (qEnvironmentVariableIsSet("ICON_THEME_SEARCH_PATH")) {
145  QString path;
146  path.append(qgetenv("ICON_THEME_SEARCH_PATH"));
147  QIcon::setThemeSearchPaths(QStringList({ path, QStringLiteral(":/icons") }));
148  } else {
149  QIcon::setThemeSearchPaths(QIcon::themeSearchPaths() << QStringLiteral("../share/icons") << QStringLiteral(":/icons"));
150  }
151  if (qEnvironmentVariableIsSet("ICON_THEME")) {
152  QString themeName;
153  themeName.append(qgetenv("ICON_THEME"));
154  QIcon::setThemeName(themeName);
155  }
156  }
157 #ifdef Q_OS_WIN32
158  // default configuration under Windows
159  if (QIcon::themeName().isEmpty()) {
160  QIcon::setThemeName(QStringLiteral("default"));
161  }
162 #endif
163  if (m_fontArg.isPresent()) {
164  QFont font;
165  font.setFamily(QString::fromLocal8Bit(m_fontArg.values().front()));
166  try {
167  font.setPointSize(stringToNumber<int>(m_fontArg.values().back()));
168  } catch (const ConversionException &) {
169  cerr << Phrases::Warning << "The specified font size is no number and will be ignored." << Phrases::EndFlush;
170  }
171  QGuiApplication::setFont(font);
172  }
173 #ifdef Q_OS_WIN32
174  else if (!preventApplyingDefaultFont) {
175  QGuiApplication::setFont(QFont(QStringLiteral("Segoe UI"), 9));
176  }
177 #else
178  CPP_UTILITIES_UNUSED(preventApplyingDefaultFont)
179 #endif
180  if (m_libraryPathsArg.isPresent()) {
181  QStringList libraryPaths;
182  libraryPaths.reserve(static_cast<QStringList::size_type>(m_libraryPathsArg.values().size()));
183  for (const auto &path : m_libraryPathsArg.values()) {
184  libraryPaths << QString::fromLocal8Bit(path);
185  }
186  QCoreApplication::setLibraryPaths(libraryPaths);
187  }
188  if (m_sceneGraphRenderLoopArg.isPresent()) {
189  qputenv(m_sceneGraphRenderLoopArg.environmentVariable(), QByteArray(m_sceneGraphRenderLoopArg.firstValue()));
190  }
191 }
192 } // namespace CppUtilities
void applySettings(bool preventApplyingDefaultFont=false) const
Applies the settings from the arguments.
The CppUtilities namespace contains addons to the c++utilities library provided by the qtutilities li...