| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 | // Copyright (C) 2016 The Qt Company Ltd. // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only // Qt-Security score:significant reason:default #include "qgtk3theme.h" #include "qgtk3dialoghelpers.h" #include <QVariant> #include <QGuiApplication> #include <qpa/qwindowsysteminterface.h> #undef signals #include <gtk/gtk.h> #if QT_CONFIG(xcb_xlib) #include <X11/Xlib.h> #endif QT_BEGIN_NAMESPACE using namespace Qt::StringLiterals; const char *QGtk3Theme::name = "gtk3"; template <typename T> static T gtkSetting(const gchar *propertyName) { GtkSettings *settings = gtk_settings_get_default(); T value; g_object_get(settings, propertyName, &value, NULL); return value; } static QString gtkSetting(const gchar *propertyName) { gchararray value = gtkSetting<gchararray>(propertyName); QString str = QString::fromUtf8(value); g_free(value); return str; } void gtkMessageHandler(const gchar *log_domain, GLogLevelFlags log_level, const gchar *message, gpointer unused_data) { /* Silence false-positive Gtk warnings (we are using Xlib to set * the WM_TRANSIENT_FOR hint). */ if (g_strcmp0(message, "GtkDialog mapped without a transient parent. " "This is discouraged.") != 0) { /* For other messages, call the default handler. */ g_log_default_handler(log_domain, log_level, message, unused_data); } } QGtk3Theme::QGtk3Theme() { // Ensure gtk uses the same windowing system, but let it // fallback in case GDK_BACKEND environment variable // filters the preferred one out if (QGuiApplication::platformName().startsWith("wayland"_L1)) gdk_set_allowed_backends("wayland,x11"); else if (QGuiApplication::platformName() == "xcb"_L1) gdk_set_allowed_backends("x11,wayland"); #if QT_CONFIG(xcb_xlib) // gtk_init will reset the Xlib error handler, and that causes // Qt applications to quit on X errors. Therefore, we need to manually restore it. int (*oldErrorHandler)(Display *, XErrorEvent *) = XSetErrorHandler(nullptr); #endif gtk_init(nullptr, nullptr); #if QT_CONFIG(xcb_xlib) XSetErrorHandler(oldErrorHandler); #endif /* Initialize some types here so that Gtk+ does not crash when reading * the treemodel for GtkFontChooser. */ g_type_ensure(PANGO_TYPE_FONT_FAMILY); g_type_ensure(PANGO_TYPE_FONT_FACE); /* Use our custom log handler. */ g_log_set_handler("Gtk", G_LOG_LEVEL_MESSAGE, gtkMessageHandler, nullptr); #define SETTING_CONNECT(setting) g_signal_connect(settings, "notify::" setting, G_CALLBACK(notifyThemeChanged), nullptr) auto notifyThemeChanged = [] { QWindowSystemInterface::handleThemeChange(); }; GtkSettings *settings = gtk_settings_get_default(); SETTING_CONNECT("gtk-cursor-blink"); SETTING_CONNECT("gtk-cursor-blink-time"); SETTING_CONNECT("gtk-double-click-distance"); SETTING_CONNECT("gtk-double-click-time"); SETTING_CONNECT("gtk-long-press-time"); SETTING_CONNECT("gtk-entry-password-hint-timeout"); SETTING_CONNECT("gtk-dnd-drag-threshold"); SETTING_CONNECT("gtk-icon-theme-name"); SETTING_CONNECT("gtk-fallback-icon-theme"); SETTING_CONNECT("gtk-font-name"); SETTING_CONNECT("gtk-application-prefer-dark-theme"); SETTING_CONNECT("gtk-theme-name"); SETTING_CONNECT("gtk-cursor-theme-name"); SETTING_CONNECT("gtk-cursor-theme-size"); #undef SETTING_CONNECT m_storage.reset(new QGtk3Storage); } static inline QVariant gtkGetLongPressTime() { const char *gtk_long_press_time = "gtk-long-press-time"; static bool found = g_object_class_find_property(G_OBJECT_GET_CLASS(gtk_settings_get_default()), gtk_long_press_time); if (!found) return QVariant(); return QVariant(gtkSetting<guint>(gtk_long_press_time)); // Since 3.14, apparently we support >= 3.6 } QVariant QGtk3Theme::themeHint(QPlatformTheme::ThemeHint hint) const { switch (hint) { case QPlatformTheme::CursorFlashTime: if (gtkSetting<gboolean>("gtk-cursor-blink")) return QVariant(gtkSetting<gint>("gtk-cursor-blink-time")); else return 0; case QPlatformTheme::MouseDoubleClickDistance: return QVariant(gtkSetting<gint>("gtk-double-click-distance")); case QPlatformTheme::MouseDoubleClickInterval: return QVariant(gtkSetting<gint>("gtk-double-click-time")); case QPlatformTheme::MousePressAndHoldInterval: { QVariant v = gtkGetLongPressTime(); if (!v.isValid()) v = QGnomeTheme::themeHint(hint); return v; } case QPlatformTheme::PasswordMaskDelay: return QVariant(gtkSetting<guint>("gtk-entry-password-hint-timeout")); case QPlatformTheme::StartDragDistance: return QVariant(gtkSetting<gint>("gtk-dnd-drag-threshold")); case QPlatformTheme::SystemIconThemeName: return QVariant(gtkSetting("gtk-icon-theme-name")); case QPlatformTheme::SystemIconFallbackThemeName: return QVariant(gtkSetting("gtk-fallback-icon-theme")); case QPlatformTheme::MouseCursorTheme: return QVariant(gtkSetting("gtk-cursor-theme-name")); case QPlatformTheme::MouseCursorSize: { int s = gtkSetting<gint>("gtk-cursor-theme-size"); if (s > 0) return QVariant(QSize(s, s)); return QGnomeTheme::themeHint(hint); } default: return QGnomeTheme::themeHint(hint); } } QString QGtk3Theme::gtkFontName() const { QString cfgFontName = gtkSetting("gtk-font-name"); if (!cfgFontName.isEmpty()) return cfgFontName; return QGnomeTheme::gtkFontName(); } Qt::ColorScheme QGtk3Theme::colorScheme() const { Q_ASSERT(m_storage); Q_D(const QGnomeTheme); const Qt::ColorScheme colorScheme = d->colorScheme(); const bool hasRequestedColorScheme = d->hasRequestedColorScheme(); #ifdef QT_DEBUG if (hasRequestedColorScheme && colorScheme != m_storage->colorScheme()) { qCDebug(lcQGtk3Interface) << "Requested color scheme" << colorScheme << "differs from theme color scheme" << m_storage->colorScheme(); } #endif return hasRequestedColorScheme ? colorScheme : m_storage->colorScheme(); } void QGtk3Theme::requestColorScheme(Qt::ColorScheme scheme) { const Qt::ColorScheme oldColorScheme = colorScheme(); QGnomeTheme::requestColorScheme(scheme); if (oldColorScheme == colorScheme()) return; qCDebug(lcQGtk3Interface) << scheme << "has been requested. Theme supports color scheme:" << m_storage->colorScheme(); m_storage->handleThemeChange(); QWindowSystemInterface::sendWindowSystemEvents(QEventLoop::AllEvents); } bool QGtk3Theme::usePlatformNativeDialog(DialogType type) const { switch (type) { case ColorDialog: return true; case FileDialog: return useNativeFileDialog(); case FontDialog: return true; default: return false; } } QPlatformDialogHelper *QGtk3Theme::createPlatformDialogHelper(DialogType type) const { switch (type) { case ColorDialog: return new QGtk3ColorDialogHelper; case FileDialog: if (!useNativeFileDialog()) return nullptr; return new QGtk3FileDialogHelper; case FontDialog: return new QGtk3FontDialogHelper; default: return nullptr; } } bool QGtk3Theme::useNativeFileDialog() { /* Require GTK3 >= 3.15.5 to avoid running into this bug: * https://bugzilla.gnome.org/show_bug.cgi?id=725164 * * While this bug only occurs when using widget-based file dialogs * (native GTK3 dialogs are fine) we have to disable platform file * dialogs entirely since we can't avoid creation of a platform * dialog helper. */ return gtk_check_version(3, 15, 5) == nullptr; } const QPalette *QGtk3Theme::palette(Palette type) const { Q_ASSERT(m_storage); Q_D(const QGnomeTheme); const Qt::ColorScheme colorScheme = d->colorScheme(); const bool hasRequestedColorScheme = d->hasRequestedColorScheme(); #ifdef QT_DEBUG if (hasRequestedColorScheme && colorScheme != m_storage->colorScheme()) { qCDebug(lcQGtk3Interface) << "Current KDE theme doesn't support requested color scheme" << colorScheme << "Falling back to fusion palette."; return QPlatformTheme::palette(type); } #endif return (hasRequestedColorScheme && colorScheme != m_storage->colorScheme()) ? QPlatformTheme::palette(type) : m_storage->palette(type); } QPixmap QGtk3Theme::standardPixmap(StandardPixmap sp, const QSizeF &size) const { Q_ASSERT(m_storage); return m_storage->standardPixmap(sp, size); } const QFont *QGtk3Theme::font(Font type) const { Q_ASSERT(m_storage); return m_storage->font(type); } QIcon QGtk3Theme::fileIcon(const QFileInfo &fileInfo, QPlatformTheme::IconOptions iconOptions) const { Q_UNUSED(iconOptions); Q_ASSERT(m_storage); return m_storage->fileIcon(fileInfo); } #if QT_CONFIG(dbus) void QGtk3Theme::updateColorScheme(Qt::ColorScheme newColorScheme) { if (newColorScheme == colorScheme()) QGnomeTheme::updateColorScheme(newColorScheme); else m_storage->handleThemeChange(); } #endif // QT_CONFIG(dbus) QT_END_NAMESPACE |
