diff options
Diffstat (limited to 'src/qt5gtk2-style/qgtkstyle_p.cpp')
| -rw-r--r-- | src/qt5gtk2-style/qgtkstyle_p.cpp | 585 |
1 files changed, 585 insertions, 0 deletions
diff --git a/src/qt5gtk2-style/qgtkstyle_p.cpp b/src/qt5gtk2-style/qgtkstyle_p.cpp new file mode 100644 index 0000000..4ac2a2b --- /dev/null +++ b/src/qt5gtk2-style/qgtkstyle_p.cpp @@ -0,0 +1,585 @@ +/*************************************************************************** + * Copyright (C) 2015 The Qt Company Ltd. * + * Copyright (C) 2016-2022 Ilya Kotov, forkotov02@ya.ru * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * + ***************************************************************************/ + +#include "qgtkstyle_p_p.h" + +// This file is responsible for resolving all GTK functions we use +// dynamically. This is done to avoid link-time dependancy on GTK +// as well as crashes occurring due to usage of the GTK_QT engines +// +// Additionally we create a map of common GTK widgets that we can pass +// to the GTK theme engine as many engines resort to querying the +// actual widget pointers for details that are not covered by the +// state flags + +#include <qglobal.h> +#if !defined(QT_NO_STYLE_GTK) + +#include <QEvent> +#include <QFile> +#include <QStringList> +#include <QTextStream> +#include <QHash> +#include <QUrl> +#include <QDebug> + +#include "qgtk2painter_p.h" +#include <private/qapplication_p.h> +#include <private/qiconloader_p.h> +#include <qpa/qplatformfontdatabase.h> + +#include <QMenu> +#include <QStyle> +#include <QApplication> +#include <QPixmapCache> +#include <QStatusBar> +#include <QMenuBar> +#include <QToolBar> +#include <QToolButton> + +#ifndef Q_OS_MAC +// X11 Includes: + +// the following is necessary to work around breakage in many versions +// of XFree86's Xlib.h still in use +// ### which versions? +#if defined(_XLIB_H_) // crude hack, but... +#error "cannot include <X11/Xlib.h> before this file" +#endif +#define XRegisterIMInstantiateCallback qt_XRegisterIMInstantiateCallback +#define XUnregisterIMInstantiateCallback qt_XUnregisterIMInstantiateCallback +#define XSetIMValues qt_XSetIMValues +#include <X11/Xlib.h> +#undef XRegisterIMInstantiateCallback +#undef XUnregisterIMInstantiateCallback +#undef XSetIMValues +#endif + +QT_BEGIN_NAMESPACE + +Q_GLOBAL_STATIC(QGtkStyleUpdateScheduler, styleScheduler) + +#ifndef Q_OS_MAC +typedef int (*x11ErrorHandler)(Display*, XErrorEvent*); +#endif + +QT_END_NAMESPACE + +Q_DECLARE_METATYPE(QGtkStylePrivate*) + +QT_BEGIN_NAMESPACE + +static void gtkStyleSetCallback(GtkWidget*) +{ + qRegisterMetaType<QGtkStylePrivate *>(); + + // We have to let this function return and complete the event + // loop to ensure that all gtk widgets have been styled before + // updating + QMetaObject::invokeMethod(styleScheduler(), "updateTheme", Qt::QueuedConnection); +} + +static void update_toolbar_style(GtkWidget *gtkToolBar, GParamSpec *, gpointer) +{ + GtkToolbarStyle toolbar_style = GTK_TOOLBAR_ICONS; + g_object_get(gtkToolBar, "toolbar-style", &toolbar_style, NULL); + QWidgetList widgets = QApplication::allWidgets(); + for (int i = 0; i < widgets.size(); ++i) { + QWidget *widget = widgets.at(i); + if (qobject_cast<QToolButton*>(widget)) { + QEvent event(QEvent::StyleChange); + QApplication::sendEvent(widget, &event); + } + } +} + +static QHashableLatin1Literal classPath(GtkWidget *widget) +{ + char *class_path; + gtk_widget_path (widget, NULL, &class_path, NULL); + + char *copy = class_path; + if (strncmp(copy, "GtkWindow.", 10) == 0) + copy += 10; + if (strncmp(copy, "GtkFixed.", 9) == 0) + copy += 9; + + copy = strdup(copy); + + g_free(class_path); + + return QHashableLatin1Literal::fromData(copy); +} + + + +bool QGtkStyleFilter::eventFilter(QObject *obj, QEvent *e) +{ + if (e->type() == QEvent::ApplicationPaletteChange) { + // Only do this the first time since this will also + // generate applicationPaletteChange events + //if (!qt_app_palettes_hash() || qt_app_palettes_hash()->isEmpty()) { + // stylePrivate->applyCustomPaletteHash(); + //} + } + return QObject::eventFilter(obj, e); +} + +QList<QGtkStylePrivate *> QGtkStylePrivate::instances; +QGtkStylePrivate::WidgetMap *QGtkStylePrivate::widgetMap = 0; + +QGtkStylePrivate::QGtkStylePrivate() + : QCommonStylePrivate() + , filter(this) +{ + instances.append(this); + animationFps = 60; +} + +QGtkStylePrivate::~QGtkStylePrivate() +{ + instances.removeOne(this); +} + +void QGtkStylePrivate::init() +{ + initGtkWidgets(); +} + +QGtkPainter* QGtkStylePrivate::gtkPainter(QPainter *painter) +{ + // TODO: choose between gtk2 and gtk3 + static QGtk2Painter instance; + instance.reset(painter); + return &instance; +} + +GtkWidget* QGtkStylePrivate::gtkWidget(const QHashableLatin1Literal &path) +{ + GtkWidget *widget = gtkWidgetMap()->value(path); + if (!widget) { + // Theme might have rearranged widget internals + widget = gtkWidgetMap()->value(path); + } + return widget; +} + +GtkStyle* QGtkStylePrivate::gtkStyle(const QHashableLatin1Literal &path) +{ + if (GtkWidget *w = gtkWidgetMap()->value(path)) + return gtk_widget_get_style(w); + return 0; +} + +void QGtkStylePrivate::gtkWidgetSetFocus(GtkWidget *widget, bool focus) +{ + GdkEvent *event = gdk_event_new(GDK_FOCUS_CHANGE); + event->focus_change.type = GDK_FOCUS_CHANGE; + event->focus_change.in = focus; + gtk_widget_send_focus_change(widget, event); + gdk_event_free(event); +} + +/* \internal + * Initializes a number of gtk menu widgets. + * The widgets are cached. + */ +void QGtkStylePrivate::initGtkMenu() const +{ + // Create menubar + GtkWidget *gtkMenuBar = gtk_menu_bar_new(); + setupGtkWidget(gtkMenuBar); + + GtkWidget *gtkMenuBarItem = gtk_menu_item_new_with_label("X"); + gtk_menu_shell_append((GtkMenuShell*)(gtkMenuBar), gtkMenuBarItem); + gtk_widget_realize(gtkMenuBarItem); + + // Create menu + GtkWidget *gtkMenu = gtk_menu_new(); + gtk_menu_item_set_submenu((GtkMenuItem*)(gtkMenuBarItem), gtkMenu); + gtk_widget_realize(gtkMenu); + + GtkWidget *gtkMenuItem = gtk_menu_item_new_with_label("X"); + gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkMenuItem); + gtk_widget_realize(gtkMenuItem); + + GtkWidget *gtkCheckMenuItem = gtk_check_menu_item_new_with_label("X"); + gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkCheckMenuItem); + gtk_widget_realize(gtkCheckMenuItem); + + GtkWidget *gtkMenuSeparator = gtk_separator_menu_item_new(); + gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkMenuSeparator); + + addAllSubWidgets(gtkMenuBar); + addAllSubWidgets(gtkMenu); +} + + +void QGtkStylePrivate::initGtkTreeview() const +{ + GtkWidget *gtkTreeView = gtk_tree_view_new(); + gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new()); + gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new()); + gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new()); + addWidget(gtkTreeView); +} + + +/* \internal + * Initializes a number of gtk widgets that we can later on use to determine some of our styles. + * The widgets are cached. + */ +void QGtkStylePrivate::initGtkWidgets() const +{ + // From gtkmain.c + uid_t ruid = getuid (); + uid_t rgid = getgid (); + uid_t euid = geteuid (); + uid_t egid = getegid (); + if (ruid != euid || rgid != egid) { + qWarning("\nThis process is currently running setuid or setgid.\nGTK+ does not allow this " + "therefore Qt cannot use the GTK+ integration.\nTry launching your app using \'gksudo\', " + "\'kdesudo\' or a similar tool.\n\n" + "See http://www.gtk.org/setuid.html for more information.\n"); + return; + } + + +#ifndef Q_OS_MAC + // Gtk will set the Qt error handler so we have to reset it afterwards + x11ErrorHandler qt_x_errhandler = XSetErrorHandler(0); +#endif + gtk_init (NULL, NULL); +#ifndef Q_OS_MAC + XSetErrorHandler(qt_x_errhandler); +#endif + + // make a window + GtkWidget* gtkWindow = gtk_window_new(GTK_WINDOW_POPUP); + gtk_widget_realize(gtkWindow); + QHashableLatin1Literal widgetPath = QHashableLatin1Literal::fromData(strdup("GtkWindow")); + removeWidgetFromMap(widgetPath); + gtkWidgetMap()->insert(widgetPath, gtkWindow); + + + // Make all other widgets. respect the text direction + if (qApp->layoutDirection() == Qt::RightToLeft) + gtk_widget_set_default_direction(GTK_TEXT_DIR_RTL); + + if (!gtkWidgetMap()->contains("GtkButton")) { + GtkWidget *gtkButton = gtk_button_new(); + addWidget(gtkButton); + g_signal_connect(gtkButton, "style-set", G_CALLBACK(gtkStyleSetCallback), 0); + addWidget((GtkWidget*)gtk_tool_button_new(NULL, "Qt")); + addWidget(gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_NONE)); + addWidget(gtk_hbutton_box_new()); + addWidget(gtk_check_button_new()); + addWidget(gtk_radio_button_new(NULL)); + addWidget(gtk_combo_box_new()); + addWidget(gtk_combo_box_entry_new()); + GtkWidget *entry = gtk_entry_new(); + // gtk-im-context-none is supported in gtk+ since 2.19.5 + // and also exists in gtk3 + // http://git.gnome.org/browse/gtk+/tree/gtk/gtkimmulticontext.c?id=2.19.5#n33 + // reason that we don't use gtk-im-context-simple here is, + // gtk-im-context-none has less overhead, and 2.19.5 is + // relatively old. and even for older gtk+, it will fallback + // to gtk-im-context-simple if gtk-im-context-none doesn't + // exists. + g_object_set(entry, "im-module", "gtk-im-context-none", NULL); + addWidget(entry); + addWidget(gtk_frame_new(NULL)); + addWidget(gtk_expander_new("")); + addWidget(gtk_statusbar_new()); + addWidget(gtk_hscale_new((GtkAdjustment*)gtk_adjustment_new(1, 0, 1, 0, 0, 0))); + addWidget(gtk_hscrollbar_new(NULL)); + addWidget(gtk_scrolled_window_new(NULL, NULL)); + + initGtkMenu(); + addWidget(gtk_notebook_new()); + addWidget(gtk_progress_bar_new()); + addWidget(gtk_spin_button_new((GtkAdjustment*)gtk_adjustment_new(1, 0, 1, 0, 0, 0), 0.1, 3)); + GtkWidget *toolbar = gtk_toolbar_new(); + g_signal_connect (toolbar, "notify::toolbar-style", G_CALLBACK (update_toolbar_style), toolbar); + gtk_toolbar_insert((GtkToolbar*)toolbar, gtk_separator_tool_item_new(), -1); + addWidget(toolbar); + initGtkTreeview(); + addWidget(gtk_vscale_new((GtkAdjustment*)gtk_adjustment_new(1, 0, 1, 0, 0, 0))); + addWidget(gtk_vscrollbar_new(NULL)); + } + else // Rebuild map + { + // When styles change subwidgets can get rearranged + // as with the combo box. We need to update the widget map + // to reflect this; + QHash<QHashableLatin1Literal, GtkWidget*> oldMap = *gtkWidgetMap(); + gtkWidgetMap()->clear(); + QHashIterator<QHashableLatin1Literal, GtkWidget*> it(oldMap); + while (it.hasNext()) { + it.next(); + if (!strchr(it.key().data(), '.')) { + addAllSubWidgets(it.value()); + } + free(const_cast<char *>(it.key().data())); + } + } +} + +/*! \internal + * destroys all previously buffered widgets. + */ +void QGtkStylePrivate::cleanupGtkWidgets() +{ + if (!widgetMap) + return; + if (widgetMap->contains("GtkWindow")) // Gtk will destroy all children + gtk_widget_destroy(widgetMap->value("GtkWindow")); + for (QHash<QHashableLatin1Literal, GtkWidget *>::const_iterator it = widgetMap->constBegin(); + it != widgetMap->constEnd(); ++it) + free(const_cast<char *>(it.key().data())); +} + +QString QGtkStylePrivate::getThemeName() +{ + QString themeName; + // Read the theme name from GtkSettings + GtkSettings *settings = gtk_settings_get_default(); + gchararray value; + g_object_get(settings, "gtk-theme-name", &value, NULL); + themeName = QString::fromUtf8(value); + g_free(value); + return themeName; +} + +// Get size of the arrow controls in a GtkSpinButton +int QGtkStylePrivate::getSpinboxArrowSize() const +{ + const int MIN_ARROW_WIDTH = 6; + GtkWidget *spinButton = gtkWidget("GtkSpinButton"); + GtkStyle *style = gtk_widget_get_style(spinButton); + gint size = pango_font_description_get_size (style->font_desc); + gint arrow_size; + arrow_size = qMax(PANGO_PIXELS (size), MIN_ARROW_WIDTH) + style->xthickness; + arrow_size += arrow_size%2 + 1; + return arrow_size; +} + + +bool QGtkStylePrivate::isKDE4Session() +{ + static int version = -1; + if (version == -1) + version = qgetenv("KDE_SESSION_VERSION").toInt(); + return (version == 4); +} + +void QGtkStylePrivate::applyCustomPaletteHash() +{ + QPalette menuPal = gtkWidgetPalette("GtkMenu"); + GdkColor gdkBg = gtk_widget_get_style(gtkWidget("GtkMenu"))->bg[GTK_STATE_NORMAL]; + QColor bgColor(gdkBg.red>>8, gdkBg.green>>8, gdkBg.blue>>8); + menuPal.setBrush(QPalette::Base, bgColor); + menuPal.setBrush(QPalette::Window, bgColor); + qApp->setPalette(menuPal, "QMenu"); + + QPalette toolbarPal = gtkWidgetPalette("GtkToolbar"); + qApp->setPalette(toolbarPal, "QToolBar"); + + QPalette menuBarPal = gtkWidgetPalette("GtkMenuBar"); + qApp->setPalette(menuBarPal, "QMenuBar"); +} + +/*! \internal + * Returns the gtk Widget that should be used to determine text foreground and background colors. +*/ +GtkWidget* QGtkStylePrivate::getTextColorWidget() const +{ + return gtkWidget("GtkEntry"); +} + +void QGtkStylePrivate::setupGtkWidget(GtkWidget* widget) +{ + if (Q_GTK_IS_WIDGET(widget)) { + GtkWidget *protoLayout = gtkWidgetMap()->value("GtkContainer"); + if (!protoLayout) { + protoLayout = gtk_fixed_new(); + gtk_container_add((GtkContainer*)(gtkWidgetMap()->value("GtkWindow")), protoLayout); + QHashableLatin1Literal widgetPath = QHashableLatin1Literal::fromData(strdup("GtkContainer")); + gtkWidgetMap()->insert(widgetPath, protoLayout); + } + Q_ASSERT(protoLayout); + + if (!gtk_widget_get_parent(widget) && !gtk_widget_is_toplevel(widget)) + gtk_container_add((GtkContainer*)(protoLayout), widget); + gtk_widget_realize(widget); + } +} + +void QGtkStylePrivate::removeWidgetFromMap(const QHashableLatin1Literal &path) +{ + WidgetMap *map = gtkWidgetMap(); + WidgetMap::iterator it = map->find(path); + if (it != map->end()) { + char* keyData = const_cast<char *>(it.key().data()); + map->erase(it); + free(keyData); + } +} + +void QGtkStylePrivate::addWidgetToMap(GtkWidget *widget) +{ + if (Q_GTK_IS_WIDGET(widget)) { + gtk_widget_realize(widget); + QHashableLatin1Literal widgetPath = classPath(widget); + + removeWidgetFromMap(widgetPath); + gtkWidgetMap()->insert(widgetPath, widget); +#ifdef DUMP_GTK_WIDGET_TREE + qWarning("Inserted Gtk Widget: %s", widgetPath.data()); +#endif + } + } + +void QGtkStylePrivate::addAllSubWidgets(GtkWidget *widget, gpointer v) +{ + Q_UNUSED(v); + addWidgetToMap(widget); + if (G_TYPE_CHECK_INSTANCE_TYPE ((widget), gtk_container_get_type())) + gtk_container_forall((GtkContainer*)widget, addAllSubWidgets, NULL); +} + +// Updates window/windowtext palette based on the indicated gtk widget +QPalette QGtkStylePrivate::gtkWidgetPalette(const QHashableLatin1Literal >kWidgetName) const +{ + GtkWidget *gtkWidget = QGtkStylePrivate::gtkWidget(gtkWidgetName); + Q_ASSERT(gtkWidget); + QPalette pal = QApplication::palette(); + GdkColor gdkBg = gtk_widget_get_style(gtkWidget)->bg[GTK_STATE_NORMAL]; + GdkColor gdkText = gtk_widget_get_style(gtkWidget)->fg[GTK_STATE_NORMAL]; + GdkColor gdkDisabledText = gtk_widget_get_style(gtkWidget)->fg[GTK_STATE_INSENSITIVE]; + QColor bgColor(gdkBg.red>>8, gdkBg.green>>8, gdkBg.blue>>8); + QColor textColor(gdkText.red>>8, gdkText.green>>8, gdkText.blue>>8); + QColor disabledTextColor(gdkDisabledText.red>>8, gdkDisabledText.green>>8, gdkDisabledText.blue>>8); + pal.setBrush(QPalette::Window, bgColor); + pal.setBrush(QPalette::Button, bgColor); + pal.setBrush(QPalette::All, QPalette::WindowText, textColor); + pal.setBrush(QPalette::Disabled, QPalette::WindowText, disabledTextColor); + pal.setBrush(QPalette::All, QPalette::ButtonText, textColor); + pal.setBrush(QPalette::Disabled, QPalette::ButtonText, disabledTextColor); + return pal; +} + + +void QGtkStyleUpdateScheduler::updateTheme() +{ + static QString oldTheme(QLS("qt_not_set")); + QPixmapCache::clear(); + + QFont font = QGtkStylePrivate::getThemeFont(); + if (QApplication::font() != font) + qApp->setFont(font); + + if (oldTheme != QGtkStylePrivate::getThemeName()) { + oldTheme = QGtkStylePrivate::getThemeName(); + QPalette newPalette = qApp->style()->standardPalette(); +#if (QT_VERSION < QT_VERSION_CHECK(5, 15, 0)) + QApplicationPrivate::setSystemPalette(newPalette); +#endif + QApplication::setPalette(newPalette); + if (!QGtkStylePrivate::instances.isEmpty()) { + QGtkStylePrivate::instances.last()->initGtkWidgets(); + QGtkStylePrivate::instances.last()->applyCustomPaletteHash(); + } + QList<QWidget*> widgets = QApplication::allWidgets(); + // Notify all widgets that size metrics might have changed + foreach (QWidget *widget, widgets) { + QEvent e(QEvent::StyleChange); + QApplication::sendEvent(widget, &e); + } + } + QIconLoader::instance()->updateSystemTheme(); +} + +void QGtkStylePrivate::addWidget(GtkWidget *widget) +{ + if (widget) { + setupGtkWidget(widget); + addAllSubWidgets(widget); + } +} + + +// Fetch the application font from the pango font description +// contained in the theme. +QFont QGtkStylePrivate::getThemeFont() +{ + QFont font; + GtkStyle *style = gtkStyle(); + if (style && qApp->desktopSettingsAware()) + { + PangoFontDescription *gtk_font = style->font_desc; + font.setPointSizeF((float)(pango_font_description_get_size(gtk_font))/PANGO_SCALE); + + QString family = QString::fromLatin1(pango_font_description_get_family(gtk_font)); + if (!family.isEmpty()) + font.setFamily(family); + + const int weight = pango_font_description_get_weight(gtk_font); + font.setWeight(QPlatformFontDatabase::weightFromInteger(weight)); + + PangoStyle fontstyle = pango_font_description_get_style(gtk_font); + if (fontstyle == PANGO_STYLE_ITALIC) + font.setStyle(QFont::StyleItalic); + else if (fontstyle == PANGO_STYLE_OBLIQUE) + font.setStyle(QFont::StyleOblique); + else + font.setStyle(QFont::StyleNormal); + } + return font; +} + +bool operator==(const QHashableLatin1Literal &l1, const QHashableLatin1Literal &l2) +{ + return l1.size() == l2.size() || qstrcmp(l1.data(), l2.data()) == 0; +} + +// copied from qHash.cpp +uint qHash(const QHashableLatin1Literal &key) +{ + int n = key.size(); + const uchar *p = reinterpret_cast<const uchar *>(key.data()); + uint h = 0; + uint g; + + while (n--) { + h = (h << 4) + *p++; + if ((g = (h & 0xf0000000)) != 0) + h ^= g >> 23; + h &= ~g; + } + return h; +} + +QT_END_NAMESPACE + +#include "moc_qgtkstyle_p.cpp" +#include "moc_qgtkstyle_p_p.cpp" + +#endif // !defined(QT_NO_STYLE_GTK) |