src/widgets/styles/qgtkstyle_p.cpp

   1 /****************************************************************************
   2 **
   3 ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
   4 ** Contact: http://www.qt-project.org/legal
   5 **
   6 ** This file is part of the QtGui module of the Qt Toolkit.
   7 **
   8 ** $QT_BEGIN_LICENSE:LGPL$
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  10 ** Licensees holding valid commercial Qt licenses may use this file in
  11 ** accordance with the commercial license agreement provided with the
  12 ** Software or, alternatively, in accordance with the terms contained in
  13 ** a written agreement between you and Digia.  For licensing terms and
  14 ** conditions see http://qt.digia.com/licensing.  For further information
  15 ** use the contact form at http://qt.digia.com/contact-us.
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  17 ** GNU Lesser General Public License Usage
  18 ** Alternatively, this file may be used under the terms of the GNU Lesser
  19 ** General Public License version 2.1 as published by the Free Software
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  21 ** packaging of this file.  Please review the following information to
  22 ** ensure the GNU Lesser General Public License version 2.1 requirements
  23 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  24 **
  25 ** In addition, as a special exception, Digia gives you certain additional
  26 ** rights.  These rights are described in the Digia Qt LGPL Exception
  27 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  28 **
  29 ** GNU General Public License Usage
  30 ** Alternatively, this file may be used under the terms of the GNU
  31 ** General Public License version 3.0 as published by the Free Software
  32 ** Foundation and appearing in the file LICENSE.GPL included in the
  33 ** packaging of this file.  Please review the following information to
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  35 ** met: http://www.gnu.org/copyleft/gpl.html.
  36 **
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  38 ** $QT_END_LICENSE$
  39 **
  40 ****************************************************************************/
  41
  42 #include "qgtkstyle_p.h"
  43
  44 // This file is responsible for resolving all GTK functions we use
  45 // dynamically. This is done to avoid link-time dependancy on GTK
  46 // as well as crashes occurring due to usage of the GTK_QT engines
  47 //
  48 // Additionally we create a map of common GTK widgets that we can pass
  49 // to the GTK theme engine as many engines resort to querying the
  50 // actual widget pointers for details that are not covered by the
  51 // state flags
  52
  53 #include <QtCore/qglobal.h>
  54 #if !defined(QT_NO_STYLE_GTK)
  55
  56 #include <QtCore/QEvent>
  57 #include <QtCore/QFile>
  58 #include <QtCore/QStringList>
  59 #include <QtCore/QTextStream>
  60 #include <QtCore/QHash>
  61 #include <QtCore/QUrl>
  62 #include <QtCore/QLibrary>
  63 #include <QtCore/QDebug>
  64
  65 #include <private/qapplication_p.h>
  66 #include <private/qiconloader_p.h>
  67
  68 #include <QtWidgets/QMenu>
  69 #include <QtWidgets/QStyle>
  70 #include <QtWidgets/QApplication>
  71 #include <QtGui/QPixmapCache>
  72 #include <QtWidgets/QStatusBar>
  73 #include <QtWidgets/QMenuBar>
  74 #include <QtWidgets/QToolBar>
  75 #include <QtWidgets/QToolButton>
  76
  77 // X11 Includes:
  78
  79 // the following is necessary to work around breakage in many versions
  80 // of XFree86's Xlib.h still in use
  81 // ### which versions?
  82 #if defined(_XLIB_H_) // crude hack, but...
  83 #error "cannot include <X11/Xlib.h> before this file"
  84 #endif
  85 #define XRegisterIMInstantiateCallback qt_XRegisterIMInstantiateCallback
  86 #define XUnregisterIMInstantiateCallback qt_XUnregisterIMInstantiateCallback
  87 #define XSetIMValues qt_XSetIMValues
  88 #include <X11/Xlib.h>
  89 #undef XRegisterIMInstantiateCallback
  90 #undef XUnregisterIMInstantiateCallback
  91 #undef XSetIMValues
  92
  93 QT_BEGIN_NAMESPACE
  94
  95 static bool displayDepth  =  -1;
  96 Q_GLOBAL_STATIC(QGtkStyleUpdateScheduler, styleScheduler)
  97
  98 Ptr_gtk_container_forall QGtkStylePrivate::gtk_container_forall = 0;
  99 Ptr_gtk_init QGtkStylePrivate::gtk_init = 0;
 100 Ptr_gtk_style_attach QGtkStylePrivate::gtk_style_attach = 0;
 101 Ptr_gtk_window_new QGtkStylePrivate::gtk_window_new = 0;
 102 Ptr_gtk_widget_destroy QGtkStylePrivate::gtk_widget_destroy = 0;
 103 Ptr_gtk_widget_realize QGtkStylePrivate::gtk_widget_realize = 0;
 104 Ptr_gtk_widget_set_default_direction QGtkStylePrivate::gtk_widget_set_default_direction = 0;
 105 Ptr_gtk_widget_modify_color QGtkStylePrivate::gtk_widget_modify_fg = 0;
 106 Ptr_gtk_widget_modify_color QGtkStylePrivate::gtk_widget_modify_bg = 0;
 107 Ptr_gtk_arrow_new QGtkStylePrivate::gtk_arrow_new = 0;
 108 Ptr_gtk_menu_item_new_with_label QGtkStylePrivate::gtk_menu_item_new_with_label = 0;
 109 Ptr_gtk_check_menu_item_new_with_label QGtkStylePrivate::gtk_check_menu_item_new_with_label = 0;
 110 Ptr_gtk_menu_bar_new QGtkStylePrivate::gtk_menu_bar_new = 0;
 111 Ptr_gtk_menu_new QGtkStylePrivate::gtk_menu_new = 0;
 112 Ptr_gtk_button_new QGtkStylePrivate::gtk_button_new = 0;
 113 Ptr_gtk_tool_button_new QGtkStylePrivate::gtk_tool_button_new = 0;
 114 Ptr_gtk_hbutton_box_new QGtkStylePrivate::gtk_hbutton_box_new = 0;
 115 Ptr_gtk_check_button_new QGtkStylePrivate::gtk_check_button_new = 0;
 116 Ptr_gtk_radio_button_new QGtkStylePrivate::gtk_radio_button_new = 0;
 117 Ptr_gtk_spin_button_new QGtkStylePrivate::gtk_spin_button_new = 0;
 118 Ptr_gtk_frame_new QGtkStylePrivate::gtk_frame_new = 0;
 119 Ptr_gtk_expander_new QGtkStylePrivate::gtk_expander_new = 0;
 120 Ptr_gtk_statusbar_new QGtkStylePrivate::gtk_statusbar_new = 0;
 121 Ptr_gtk_entry_new QGtkStylePrivate::gtk_entry_new = 0;
 122 Ptr_gtk_hscale_new QGtkStylePrivate::gtk_hscale_new = 0;
 123 Ptr_gtk_vscale_new QGtkStylePrivate::gtk_vscale_new = 0;
 124 Ptr_gtk_hscrollbar_new QGtkStylePrivate::gtk_hscrollbar_new = 0;
 125 Ptr_gtk_vscrollbar_new QGtkStylePrivate::gtk_vscrollbar_new = 0;
 126 Ptr_gtk_scrolled_window_new QGtkStylePrivate::gtk_scrolled_window_new = 0;
 127 Ptr_gtk_notebook_new QGtkStylePrivate::gtk_notebook_new = 0;
 128 Ptr_gtk_toolbar_new QGtkStylePrivate::gtk_toolbar_new = 0;
 129 Ptr_gtk_toolbar_insert QGtkStylePrivate::gtk_toolbar_insert = 0;
 130 Ptr_gtk_separator_tool_item_new QGtkStylePrivate::gtk_separator_tool_item_new = 0;
 131 Ptr_gtk_tree_view_new QGtkStylePrivate::gtk_tree_view_new = 0;
 132 Ptr_gtk_combo_box_new QGtkStylePrivate::gtk_combo_box_new = 0;
 133 Ptr_gtk_combo_box_entry_new QGtkStylePrivate::gtk_combo_box_entry_new = 0;
 134 Ptr_gtk_progress_bar_new QGtkStylePrivate::gtk_progress_bar_new = 0;
 135 Ptr_gtk_container_add QGtkStylePrivate::gtk_container_add = 0;
 136 Ptr_gtk_menu_shell_append QGtkStylePrivate::gtk_menu_shell_append = 0;
 137 Ptr_gtk_progress_configure QGtkStylePrivate::gtk_progress_configure = 0;
 138 Ptr_gtk_range_get_adjustment QGtkStylePrivate::gtk_range_get_adjustment = 0;
 139 Ptr_gtk_range_set_adjustment QGtkStylePrivate::gtk_range_set_adjustment = 0;
 140 Ptr_gtk_range_set_inverted QGtkStylePrivate::gtk_range_set_inverted = 0;
 141 Ptr_gtk_icon_factory_lookup_default QGtkStylePrivate::gtk_icon_factory_lookup_default = 0;
 142 Ptr_gtk_icon_theme_get_default QGtkStylePrivate::gtk_icon_theme_get_default = 0;
 143 Ptr_gtk_widget_style_get QGtkStylePrivate::gtk_widget_style_get = 0;
 144 Ptr_gtk_icon_set_render_icon QGtkStylePrivate::gtk_icon_set_render_icon = 0;
 145 Ptr_gtk_fixed_new QGtkStylePrivate::gtk_fixed_new = 0;
 146 Ptr_gtk_tree_view_column_new QGtkStylePrivate::gtk_tree_view_column_new = 0;
 147 Ptr_gtk_tree_view_get_column QGtkStylePrivate::gtk_tree_view_get_column = 0;
 148 Ptr_gtk_tree_view_append_column QGtkStylePrivate::gtk_tree_view_append_column = 0;
 149 Ptr_gtk_paint_check QGtkStylePrivate::gtk_paint_check = 0;
 150 Ptr_gtk_paint_box QGtkStylePrivate::gtk_paint_box = 0;
 151 Ptr_gtk_paint_box_gap QGtkStylePrivate::gtk_paint_box_gap = 0;
 152 Ptr_gtk_paint_flat_box QGtkStylePrivate::gtk_paint_flat_box = 0;
 153 Ptr_gtk_paint_option QGtkStylePrivate::gtk_paint_option = 0;
 154 Ptr_gtk_paint_extension QGtkStylePrivate::gtk_paint_extension = 0;
 155 Ptr_gtk_paint_slider QGtkStylePrivate::gtk_paint_slider = 0;
 156 Ptr_gtk_paint_shadow QGtkStylePrivate::gtk_paint_shadow = 0;
 157 Ptr_gtk_paint_resize_grip QGtkStylePrivate::gtk_paint_resize_grip = 0;
 158 Ptr_gtk_paint_focus QGtkStylePrivate::gtk_paint_focus = 0;
 159 Ptr_gtk_paint_arrow QGtkStylePrivate::gtk_paint_arrow = 0;
 160 Ptr_gtk_paint_handle QGtkStylePrivate::gtk_paint_handle = 0;
 161 Ptr_gtk_paint_expander QGtkStylePrivate::gtk_paint_expander = 0;
 162 Ptr_gtk_adjustment_configure QGtkStylePrivate::gtk_adjustment_configure = 0;
 163 Ptr_gtk_adjustment_new QGtkStylePrivate::gtk_adjustment_new = 0;
 164 Ptr_gtk_paint_hline QGtkStylePrivate::gtk_paint_hline = 0;
 165 Ptr_gtk_paint_vline QGtkStylePrivate::gtk_paint_vline = 0;
 166 Ptr_gtk_menu_item_set_submenu QGtkStylePrivate::gtk_menu_item_set_submenu = 0;
 167 Ptr_gtk_settings_get_default QGtkStylePrivate::gtk_settings_get_default = 0;
 168 Ptr_gtk_separator_menu_item_new QGtkStylePrivate::gtk_separator_menu_item_new = 0;
 169 Ptr_gtk_widget_size_allocate QGtkStylePrivate::gtk_widget_size_allocate = 0;
 170 Ptr_gtk_widget_size_request QGtkStylePrivate::gtk_widget_size_request = 0;
 171 Ptr_gtk_widget_set_direction QGtkStylePrivate::gtk_widget_set_direction = 0;
 172 Ptr_gtk_widget_path QGtkStylePrivate::gtk_widget_path = 0;
 173 Ptr_gtk_container_get_type QGtkStylePrivate::gtk_container_get_type = 0;
 174 Ptr_gtk_window_get_type QGtkStylePrivate::gtk_window_get_type = 0;
 175 Ptr_gtk_widget_get_type QGtkStylePrivate::gtk_widget_get_type = 0;
 176 Ptr_gtk_rc_get_style_by_paths QGtkStylePrivate::gtk_rc_get_style_by_paths = 0;
 177 Ptr_gtk_check_version QGtkStylePrivate::gtk_check_version = 0;
 178 Ptr_gtk_border_free QGtkStylePrivate::gtk_border_free = 0;
 179 Ptr_pango_font_description_get_size QGtkStylePrivate::pango_font_description_get_size = 0;
 180 Ptr_pango_font_description_get_weight QGtkStylePrivate::pango_font_description_get_weight = 0;
 181 Ptr_pango_font_description_get_family QGtkStylePrivate::pango_font_description_get_family = 0;
 182 Ptr_pango_font_description_get_style QGtkStylePrivate::pango_font_description_get_style = 0;
 183
 184 Ptr_gtk_file_filter_new QGtkStylePrivate::gtk_file_filter_new = 0;
 185 Ptr_gtk_file_filter_set_name QGtkStylePrivate::gtk_file_filter_set_name = 0;
 186 Ptr_gtk_file_filter_add_pattern QGtkStylePrivate::gtk_file_filter_add_pattern = 0;
 187 Ptr_gtk_file_chooser_add_filter QGtkStylePrivate::gtk_file_chooser_add_filter = 0;
 188 Ptr_gtk_file_chooser_set_filter QGtkStylePrivate::gtk_file_chooser_set_filter = 0;
 189 Ptr_gtk_file_chooser_get_filter QGtkStylePrivate::gtk_file_chooser_get_filter = 0;
 190 Ptr_gtk_file_chooser_dialog_new QGtkStylePrivate::gtk_file_chooser_dialog_new = 0;
 191 Ptr_gtk_file_chooser_set_current_folder QGtkStylePrivate::gtk_file_chooser_set_current_folder = 0;
 192 Ptr_gtk_file_chooser_get_filename QGtkStylePrivate::gtk_file_chooser_get_filename = 0;
 193 Ptr_gtk_file_chooser_get_filenames QGtkStylePrivate::gtk_file_chooser_get_filenames = 0;
 194 Ptr_gtk_file_chooser_set_current_name QGtkStylePrivate::gtk_file_chooser_set_current_name = 0;
 195 Ptr_gtk_dialog_run QGtkStylePrivate::gtk_dialog_run = 0;
 196 Ptr_gtk_file_chooser_set_filename QGtkStylePrivate::gtk_file_chooser_set_filename = 0;
 197
 198 Ptr_gdk_pixbuf_get_pixels QGtkStylePrivate::gdk_pixbuf_get_pixels = 0;
 199 Ptr_gdk_pixbuf_get_width QGtkStylePrivate::gdk_pixbuf_get_width = 0;
 200 Ptr_gdk_pixbuf_get_height QGtkStylePrivate::gdk_pixbuf_get_height = 0;
 201 Ptr_gdk_pixmap_new QGtkStylePrivate::gdk_pixmap_new = 0;
 202 Ptr_gdk_pixbuf_new QGtkStylePrivate::gdk_pixbuf_new = 0;
 203 Ptr_gdk_pixbuf_get_from_drawable QGtkStylePrivate::gdk_pixbuf_get_from_drawable = 0;
 204 Ptr_gdk_draw_rectangle QGtkStylePrivate::gdk_draw_rectangle = 0;
 205 Ptr_gdk_pixbuf_unref QGtkStylePrivate::gdk_pixbuf_unref = 0;
 206 Ptr_gdk_drawable_unref QGtkStylePrivate::gdk_drawable_unref = 0;
 207 Ptr_gdk_drawable_get_depth QGtkStylePrivate::gdk_drawable_get_depth = 0;
 208 Ptr_gdk_color_free QGtkStylePrivate::gdk_color_free = 0;
 209 Ptr_gdk_x11_window_set_user_time QGtkStylePrivate::gdk_x11_window_set_user_time = 0;
 210 Ptr_gdk_x11_drawable_get_xid QGtkStylePrivate::gdk_x11_drawable_get_xid = 0;
 211 Ptr_gdk_x11_drawable_get_xdisplay QGtkStylePrivate::gdk_x11_drawable_get_xdisplay = 0;
 212
 213 Ptr_gconf_client_get_default QGtkStylePrivate::gconf_client_get_default = 0;
 214 Ptr_gconf_client_get_string QGtkStylePrivate::gconf_client_get_string = 0;
 215 Ptr_gconf_client_get_bool QGtkStylePrivate::gconf_client_get_bool = 0;
 216
 217 Ptr_gnome_icon_lookup_sync QGtkStylePrivate::gnome_icon_lookup_sync = 0;
 218 Ptr_gnome_vfs_init QGtkStylePrivate::gnome_vfs_init = 0;
 219
 220 typedef int (*x11ErrorHandler)(Display*, XErrorEvent*);
 221
 222 QT_END_NAMESPACE
 223
 224 Q_DECLARE_METATYPE(QGtkStylePrivate*);
 225
 226 QT_BEGIN_NAMESPACE
 227
 228 static void gtkStyleSetCallback(GtkWidget*)
 229 {
 230     qRegisterMetaType<QGtkStylePrivate *>();
 231
 232     // We have to let this function return and complete the event
 233     // loop to ensure that all gtk widgets have been styled before
 234     // updating
 235     QMetaObject::invokeMethod(styleScheduler(), "updateTheme", Qt::QueuedConnection);
 236 }
 237
 238 static void update_toolbar_style(GtkWidget *gtkToolBar, GParamSpec *, gpointer)
 239 {
 240     GtkToolbarStyle toolbar_style = GTK_TOOLBAR_ICONS;
 241     g_object_get(gtkToolBar, "toolbar-style", &toolbar_style, NULL);
 242     QWidgetList widgets = QApplication::allWidgets();
 243     for (int i = 0; i < widgets.size(); ++i) {
 244         QWidget *widget = widgets.at(i);
 245         if (qobject_cast<QToolButton*>(widget)) {
 246             QEvent event(QEvent::StyleChange);
 247             QApplication::sendEvent(widget, &event);
 248         }
 249     }
 250 }
 251
 252 static QHashableLatin1Literal classPath(GtkWidget *widget)
 253 {
 254     char *class_path;
 255     QGtkStylePrivate::gtk_widget_path (widget, NULL, &class_path, NULL);
 256
 257     char *copy = class_path;
 258     if (strncmp(copy, "GtkWindow.", 10) == 0)
 259         copy += 10;
 260     if (strncmp(copy, "GtkFixed.", 9) == 0)
 261         copy += 9;
 262
 263     copy = strdup(copy);
 264
 265     g_free(class_path);
 266
 267     return QHashableLatin1Literal::fromData(copy);
 268 }
 269
 270
 271
 272 bool QGtkStyleFilter::eventFilter(QObject *obj, QEvent *e)
 273 {
 274     if (e->type() == QEvent::ApplicationPaletteChange) {
 275         // Only do this the first time since this will also
 276         // generate applicationPaletteChange events
 277         if (!qt_app_palettes_hash() ||  qt_app_palettes_hash()->isEmpty()) {
 278             stylePrivate->applyCustomPaletteHash();
 279         }
 280     }
 281     return QObject::eventFilter(obj, e);
 282 }
 283
 284 QList<QGtkStylePrivate *> QGtkStylePrivate::instances;
 285 QGtkStylePrivate::WidgetMap *QGtkStylePrivate::widgetMap = 0;
 286
 287 QGtkStylePrivate::QGtkStylePrivate()
 288   : QWindowsStylePrivate()
 289   , filter(this)
 290 {
 291     instances.append(this);
 292 }
 293
 294 QGtkStylePrivate::~QGtkStylePrivate()
 295 {
 296     instances.removeOne(this);
 297 }
 298
 299 void QGtkStylePrivate::init()
 300 {
 301     resolveGtk();
 302     initGtkWidgets();
 303 }
 304
 305 GtkWidget* QGtkStylePrivate::gtkWidget(const QHashableLatin1Literal &path)
 306 {
 307     GtkWidget *widget = gtkWidgetMap()->value(path);
 308     if (!widget) {
 309         // Theme might have rearranged widget internals
 310         widget = gtkWidgetMap()->value(path);
 311     }
 312     return widget;
 313 }
 314
 315 GtkStyle* QGtkStylePrivate::gtkStyle(const QHashableLatin1Literal &path)
 316 {
 317     if (GtkWidget *w = gtkWidgetMap()->value(path))
 318         return w->style;
 319     return 0;
 320 }
 321
 322 /*! \internal
 323  *  Get references to gtk functions after we dynamically load the library.
 324  */
 325 void QGtkStylePrivate::resolveGtk() const
 326 {
 327     // enforce the "0" suffix, so we'll open libgtk-x11-2.0.so.0
 328     QLibrary libgtk(QLS("gtk-x11-2.0"), 0, 0);
 329
 330     gtk_init = (Ptr_gtk_init)libgtk.resolve("gtk_init");
 331     gtk_window_new = (Ptr_gtk_window_new)libgtk.resolve("gtk_window_new");
 332     gtk_style_attach = (Ptr_gtk_style_attach)libgtk.resolve("gtk_style_attach");
 333     gtk_widget_destroy = (Ptr_gtk_widget_destroy)libgtk.resolve("gtk_widget_destroy");
 334     gtk_widget_realize = (Ptr_gtk_widget_realize)libgtk.resolve("gtk_widget_realize");
 335
 336     gtk_file_chooser_set_current_folder = (Ptr_gtk_file_chooser_set_current_folder)libgtk.resolve("gtk_file_chooser_set_current_folder");
 337     gtk_file_filter_new = (Ptr_gtk_file_filter_new)libgtk.resolve("gtk_file_filter_new");
 338     gtk_file_filter_set_name = (Ptr_gtk_file_filter_set_name)libgtk.resolve("gtk_file_filter_set_name");
 339     gtk_file_filter_add_pattern = (Ptr_gtk_file_filter_add_pattern)libgtk.resolve("gtk_file_filter_add_pattern");
 340     gtk_file_chooser_add_filter = (Ptr_gtk_file_chooser_add_filter)libgtk.resolve("gtk_file_chooser_add_filter");
 341     gtk_file_chooser_set_filter = (Ptr_gtk_file_chooser_set_filter)libgtk.resolve("gtk_file_chooser_set_filter");
 342     gtk_file_chooser_get_filter = (Ptr_gtk_file_chooser_get_filter)libgtk.resolve("gtk_file_chooser_get_filter");
 343     gtk_file_chooser_dialog_new = (Ptr_gtk_file_chooser_dialog_new)libgtk.resolve("gtk_file_chooser_dialog_new");
 344     gtk_file_chooser_set_current_folder = (Ptr_gtk_file_chooser_set_current_folder)libgtk.resolve("gtk_file_chooser_set_current_folder");
 345     gtk_file_chooser_get_filename = (Ptr_gtk_file_chooser_get_filename)libgtk.resolve("gtk_file_chooser_get_filename");
 346     gtk_file_chooser_get_filenames = (Ptr_gtk_file_chooser_get_filenames)libgtk.resolve("gtk_file_chooser_get_filenames");
 347     gtk_file_chooser_set_current_name = (Ptr_gtk_file_chooser_set_current_name)libgtk.resolve("gtk_file_chooser_set_current_name");
 348     gtk_dialog_run = (Ptr_gtk_dialog_run)libgtk.resolve("gtk_dialog_run");
 349     gtk_file_chooser_set_filename = (Ptr_gtk_file_chooser_set_filename)libgtk.resolve("gtk_file_chooser_set_filename");
 350
 351     gdk_pixbuf_get_pixels = (Ptr_gdk_pixbuf_get_pixels)libgtk.resolve("gdk_pixbuf_get_pixels");
 352     gdk_pixbuf_get_width = (Ptr_gdk_pixbuf_get_width)libgtk.resolve("gdk_pixbuf_get_width");
 353     gdk_pixbuf_get_height = (Ptr_gdk_pixbuf_get_height)libgtk.resolve("gdk_pixbuf_get_height");
 354     gdk_pixmap_new = (Ptr_gdk_pixmap_new)libgtk.resolve("gdk_pixmap_new");
 355     gdk_pixbuf_new = (Ptr_gdk_pixbuf_new)libgtk.resolve("gdk_pixbuf_new");
 356     gdk_pixbuf_get_from_drawable = (Ptr_gdk_pixbuf_get_from_drawable)libgtk.resolve("gdk_pixbuf_get_from_drawable");
 357     gdk_draw_rectangle = (Ptr_gdk_draw_rectangle)libgtk.resolve("gdk_draw_rectangle");
 358     gdk_pixbuf_unref = (Ptr_gdk_pixbuf_unref)libgtk.resolve("gdk_pixbuf_unref");
 359     gdk_drawable_unref = (Ptr_gdk_drawable_unref)libgtk.resolve("gdk_drawable_unref");
 360     gdk_drawable_get_depth = (Ptr_gdk_drawable_get_depth)libgtk.resolve("gdk_drawable_get_depth");
 361     gdk_color_free = (Ptr_gdk_color_free)libgtk.resolve("gdk_color_free");
 362     gdk_x11_window_set_user_time = (Ptr_gdk_x11_window_set_user_time)libgtk.resolve("gdk_x11_window_set_user_time");
 363     gdk_x11_drawable_get_xid = (Ptr_gdk_x11_drawable_get_xid)libgtk.resolve("gdk_x11_drawable_get_xid");
 364     gdk_x11_drawable_get_xdisplay = (Ptr_gdk_x11_drawable_get_xdisplay)libgtk.resolve("gdk_x11_drawable_get_xdisplay");
 365
 366     gtk_widget_set_default_direction = (Ptr_gtk_widget_set_default_direction)libgtk.resolve("gtk_widget_set_default_direction");
 367     gtk_widget_modify_fg = (Ptr_gtk_widget_modify_color)libgtk.resolve("gtk_widget_modify_fg");
 368     gtk_widget_modify_bg = (Ptr_gtk_widget_modify_color)libgtk.resolve("gtk_widget_modify_bg");
 369     gtk_arrow_new = (Ptr_gtk_arrow_new)libgtk.resolve("gtk_arrow_new");
 370     gtk_menu_item_new_with_label = (Ptr_gtk_menu_item_new_with_label)libgtk.resolve("gtk_menu_item_new_with_label");
 371     gtk_check_menu_item_new_with_label = (Ptr_gtk_check_menu_item_new_with_label)libgtk.resolve("gtk_check_menu_item_new_with_label");
 372     gtk_menu_bar_new = (Ptr_gtk_menu_bar_new)libgtk.resolve("gtk_menu_bar_new");
 373     gtk_menu_new = (Ptr_gtk_menu_new)libgtk.resolve("gtk_menu_new");
 374     gtk_toolbar_new = (Ptr_gtk_toolbar_new)libgtk.resolve("gtk_toolbar_new");
 375     gtk_separator_tool_item_new = (Ptr_gtk_separator_tool_item_new)libgtk.resolve("gtk_separator_tool_item_new");
 376     gtk_toolbar_insert = (Ptr_gtk_toolbar_insert)libgtk.resolve("gtk_toolbar_insert");
 377     gtk_button_new = (Ptr_gtk_button_new)libgtk.resolve("gtk_button_new");
 378     gtk_tool_button_new = (Ptr_gtk_tool_button_new)libgtk.resolve("gtk_tool_button_new");
 379     gtk_hbutton_box_new = (Ptr_gtk_hbutton_box_new)libgtk.resolve("gtk_hbutton_box_new");
 380     gtk_check_button_new = (Ptr_gtk_check_button_new)libgtk.resolve("gtk_check_button_new");
 381     gtk_radio_button_new = (Ptr_gtk_radio_button_new)libgtk.resolve("gtk_radio_button_new");
 382     gtk_notebook_new = (Ptr_gtk_notebook_new)libgtk.resolve("gtk_notebook_new");
 383     gtk_progress_bar_new = (Ptr_gtk_progress_bar_new)libgtk.resolve("gtk_progress_bar_new");
 384     gtk_spin_button_new = (Ptr_gtk_spin_button_new)libgtk.resolve("gtk_spin_button_new");
 385     gtk_hscale_new = (Ptr_gtk_hscale_new)libgtk.resolve("gtk_hscale_new");
 386     gtk_vscale_new = (Ptr_gtk_vscale_new)libgtk.resolve("gtk_vscale_new");
 387     gtk_hscrollbar_new = (Ptr_gtk_hscrollbar_new)libgtk.resolve("gtk_hscrollbar_new");
 388     gtk_vscrollbar_new = (Ptr_gtk_vscrollbar_new)libgtk.resolve("gtk_vscrollbar_new");
 389     gtk_scrolled_window_new = (Ptr_gtk_scrolled_window_new)libgtk.resolve("gtk_scrolled_window_new");
 390     gtk_menu_shell_append = (Ptr_gtk_menu_shell_append)libgtk.resolve("gtk_menu_shell_append");
 391     gtk_entry_new = (Ptr_gtk_entry_new)libgtk.resolve("gtk_entry_new");
 392     gtk_tree_view_new = (Ptr_gtk_tree_view_new)libgtk.resolve("gtk_tree_view_new");
 393     gtk_combo_box_new = (Ptr_gtk_combo_box_new)libgtk.resolve("gtk_combo_box_new");
 394     gtk_progress_configure = (Ptr_gtk_progress_configure)libgtk.resolve("gtk_progress_configure");
 395     gtk_range_get_adjustment = (Ptr_gtk_range_get_adjustment)libgtk.resolve("gtk_range_get_adjustment");
 396     gtk_range_set_adjustment = (Ptr_gtk_range_set_adjustment)libgtk.resolve("gtk_range_set_adjustment");
 397     gtk_range_set_inverted = (Ptr_gtk_range_set_inverted)libgtk.resolve("gtk_range_set_inverted");
 398     gtk_container_add = (Ptr_gtk_container_add)libgtk.resolve("gtk_container_add");
 399     gtk_icon_factory_lookup_default = (Ptr_gtk_icon_factory_lookup_default)libgtk.resolve("gtk_icon_factory_lookup_default");
 400     gtk_icon_theme_get_default = (Ptr_gtk_icon_theme_get_default)libgtk.resolve("gtk_icon_theme_get_default");
 401     gtk_widget_style_get = (Ptr_gtk_widget_style_get)libgtk.resolve("gtk_widget_style_get");
 402     gtk_icon_set_render_icon = (Ptr_gtk_icon_set_render_icon)libgtk.resolve("gtk_icon_set_render_icon");
 403     gtk_fixed_new = (Ptr_gtk_fixed_new)libgtk.resolve("gtk_fixed_new");
 404     gtk_tree_view_column_new = (Ptr_gtk_tree_view_column_new)libgtk.resolve("gtk_tree_view_column_new");
 405     gtk_tree_view_append_column= (Ptr_gtk_tree_view_append_column )libgtk.resolve("gtk_tree_view_append_column");
 406     gtk_tree_view_get_column = (Ptr_gtk_tree_view_get_column )libgtk.resolve("gtk_tree_view_get_column");
 407     gtk_paint_check = (Ptr_gtk_paint_check)libgtk.resolve("gtk_paint_check");
 408     gtk_paint_box = (Ptr_gtk_paint_box)libgtk.resolve("gtk_paint_box");
 409     gtk_paint_flat_box = (Ptr_gtk_paint_flat_box)libgtk.resolve("gtk_paint_flat_box");
 410     gtk_paint_check = (Ptr_gtk_paint_check)libgtk.resolve("gtk_paint_check");
 411     gtk_paint_box = (Ptr_gtk_paint_box)libgtk.resolve("gtk_paint_box");
 412     gtk_paint_resize_grip = (Ptr_gtk_paint_resize_grip)libgtk.resolve("gtk_paint_resize_grip");
 413     gtk_paint_focus = (Ptr_gtk_paint_focus)libgtk.resolve("gtk_paint_focus");
 414     gtk_paint_shadow = (Ptr_gtk_paint_shadow)libgtk.resolve("gtk_paint_shadow");
 415     gtk_paint_slider = (Ptr_gtk_paint_slider)libgtk.resolve("gtk_paint_slider");
 416     gtk_paint_expander = (Ptr_gtk_paint_expander)libgtk.resolve("gtk_paint_expander");
 417     gtk_paint_handle = (Ptr_gtk_paint_handle)libgtk.resolve("gtk_paint_handle");
 418     gtk_paint_option = (Ptr_gtk_paint_option)libgtk.resolve("gtk_paint_option");
 419     gtk_paint_arrow = (Ptr_gtk_paint_arrow)libgtk.resolve("gtk_paint_arrow");
 420     gtk_paint_box_gap = (Ptr_gtk_paint_box_gap)libgtk.resolve("gtk_paint_box_gap");
 421     gtk_paint_extension = (Ptr_gtk_paint_extension)libgtk.resolve("gtk_paint_extension");
 422     gtk_paint_hline = (Ptr_gtk_paint_hline)libgtk.resolve("gtk_paint_hline");
 423     gtk_paint_vline = (Ptr_gtk_paint_vline)libgtk.resolve("gtk_paint_vline");
 424     gtk_adjustment_configure = (Ptr_gtk_adjustment_configure)libgtk.resolve("gtk_adjustment_configure");
 425     gtk_adjustment_new = (Ptr_gtk_adjustment_new)libgtk.resolve("gtk_adjustment_new");
 426     gtk_menu_item_set_submenu = (Ptr_gtk_menu_item_set_submenu)libgtk.resolve("gtk_menu_item_set_submenu");
 427     gtk_settings_get_default = (Ptr_gtk_settings_get_default)libgtk.resolve("gtk_settings_get_default");
 428     gtk_separator_menu_item_new = (Ptr_gtk_separator_menu_item_new)libgtk.resolve("gtk_separator_menu_item_new");
 429     gtk_frame_new = (Ptr_gtk_frame_new)libgtk.resolve("gtk_frame_new");
 430     gtk_expander_new = (Ptr_gtk_expander_new)libgtk.resolve("gtk_expander_new");
 431     gtk_statusbar_new = (Ptr_gtk_statusbar_new)libgtk.resolve("gtk_statusbar_new");
 432     gtk_combo_box_entry_new = (Ptr_gtk_combo_box_entry_new)libgtk.resolve("gtk_combo_box_entry_new");
 433     gtk_container_forall = (Ptr_gtk_container_forall)libgtk.resolve("gtk_container_forall");
 434     gtk_widget_size_allocate =(Ptr_gtk_widget_size_allocate)libgtk.resolve("gtk_widget_size_allocate");
 435     gtk_widget_size_request =(Ptr_gtk_widget_size_request)libgtk.resolve("gtk_widget_size_request");
 436     gtk_widget_set_direction =(Ptr_gtk_widget_set_direction)libgtk.resolve("gtk_widget_set_direction");
 437     gtk_widget_path =(Ptr_gtk_widget_path)libgtk.resolve("gtk_widget_path");
 438     gtk_container_get_type =(Ptr_gtk_container_get_type)libgtk.resolve("gtk_container_get_type");
 439     gtk_window_get_type =(Ptr_gtk_window_get_type)libgtk.resolve("gtk_window_get_type");
 440     gtk_widget_get_type =(Ptr_gtk_widget_get_type)libgtk.resolve("gtk_widget_get_type");
 441
 442     gtk_rc_get_style_by_paths =(Ptr_gtk_rc_get_style_by_paths)libgtk.resolve("gtk_rc_get_style_by_paths");
 443     gtk_check_version =(Ptr_gtk_check_version)libgtk.resolve("gtk_check_version");
 444     gtk_border_free =(Ptr_gtk_border_free)libgtk.resolve("gtk_border_free");
 445     pango_font_description_get_size = (Ptr_pango_font_description_get_size)libgtk.resolve("pango_font_description_get_size");
 446     pango_font_description_get_weight = (Ptr_pango_font_description_get_weight)libgtk.resolve("pango_font_description_get_weight");
 447     pango_font_description_get_family = (Ptr_pango_font_description_get_family)libgtk.resolve("pango_font_description_get_family");
 448     pango_font_description_get_style = (Ptr_pango_font_description_get_style)libgtk.resolve("pango_font_description_get_style");
 449
 450     gnome_icon_lookup_sync = (Ptr_gnome_icon_lookup_sync)QLibrary::resolve(QLS("gnomeui-2"), 0, "gnome_icon_lookup_sync");
 451     gnome_vfs_init= (Ptr_gnome_vfs_init)QLibrary::resolve(QLS("gnomevfs-2"), 0, "gnome_vfs_init");
 452 }
 453
 454 /* \internal
 455  * Initializes a number of gtk menu widgets.
 456  * The widgets are cached.
 457  */
 458 void QGtkStylePrivate::initGtkMenu() const
 459 {
 460     // Create menubar
 461     GtkWidget *gtkMenuBar = QGtkStylePrivate::gtk_menu_bar_new();
 462     setupGtkWidget(gtkMenuBar);
 463
 464     GtkWidget *gtkMenuBarItem = QGtkStylePrivate::gtk_menu_item_new_with_label("X");
 465     gtk_menu_shell_append((GtkMenuShell*)(gtkMenuBar), gtkMenuBarItem);
 466     gtk_widget_realize(gtkMenuBarItem);
 467
 468     // Create menu
 469     GtkWidget *gtkMenu = QGtkStylePrivate::gtk_menu_new();
 470     gtk_menu_item_set_submenu((GtkMenuItem*)(gtkMenuBarItem), gtkMenu);
 471     gtk_widget_realize(gtkMenu);
 472
 473     GtkWidget *gtkMenuItem = QGtkStylePrivate::gtk_menu_item_new_with_label("X");
 474     gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkMenuItem);
 475     gtk_widget_realize(gtkMenuItem);
 476
 477     GtkWidget *gtkCheckMenuItem = QGtkStylePrivate::gtk_check_menu_item_new_with_label("X");
 478     gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkCheckMenuItem);
 479     gtk_widget_realize(gtkCheckMenuItem);
 480
 481     GtkWidget *gtkMenuSeparator = QGtkStylePrivate::gtk_separator_menu_item_new();
 482     gtk_menu_shell_append((GtkMenuShell*)gtkMenu, gtkMenuSeparator);
 483
 484     addAllSubWidgets(gtkMenuBar);
 485     addAllSubWidgets(gtkMenu);
 486 }
 487
 488
 489 void QGtkStylePrivate::initGtkTreeview() const
 490 {
 491     GtkWidget *gtkTreeView = gtk_tree_view_new();
 492     gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new());
 493     gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new());
 494     gtk_tree_view_append_column((GtkTreeView*)gtkTreeView, gtk_tree_view_column_new());
 495     addWidget(gtkTreeView);
 496 }
 497
 498
 499 /* \internal
 500  * Initializes a number of gtk widgets that we can later on use to determine some of our styles.
 501  * The widgets are cached.
 502  */
 503 void QGtkStylePrivate::initGtkWidgets() const
 504 {
 505     // From gtkmain.c
 506     uid_t ruid = getuid ();
 507     uid_t rgid = getgid ();
 508     uid_t euid = geteuid ();
 509     uid_t egid = getegid ();
 510     if (ruid != euid || rgid != egid) {
 511         qWarning("\nThis process is currently running setuid or setgid.\nGTK+ does not allow this "
 512                  "therefore Qt cannot use the GTK+ integration.\nTry launching your app using \'gksudo\', "
 513                  "\'kdesudo\' or a similar tool.\n\n"
 514                  "See http://www.gtk.org/setuid.html for more information.\n");
 515         return;
 516     }
 517
 518     static QString themeName;
 519     if (!gtkWidgetMap()->contains("GtkWindow") && themeName.isEmpty()) {
 520         themeName = getThemeName();
 521
 522         if (themeName == QLS("Qt") || themeName == QLS("Qt4")) {
 523             // Due to namespace conflicts with Qt3 and obvious recursion with Qt4,
 524             // we cannot support the GTK_Qt Gtk engine
 525             qWarning("QGtkStyle cannot be used together with the GTK_Qt engine.");
 526             return;
 527         }
 528     }
 529
 530     if (QGtkStylePrivate::gtk_init) {
 531         // Gtk will set the Qt error handler so we have to reset it afterwards
 532         x11ErrorHandler qt_x_errhandler = XSetErrorHandler(0);
 533         QGtkStylePrivate::gtk_init (NULL, NULL);
 534         XSetErrorHandler(qt_x_errhandler);
 535
 536         // make a window
 537         GtkWidget* gtkWindow = QGtkStylePrivate::gtk_window_new(GTK_WINDOW_POPUP);
 538         QGtkStylePrivate::gtk_widget_realize(gtkWindow);
 539         if (displayDepth == -1)
 540             displayDepth = QGtkStylePrivate::gdk_drawable_get_depth(gtkWindow->window);
 541         QHashableLatin1Literal widgetPath = QHashableLatin1Literal::fromData(strdup("GtkWindow"));
 542         removeWidgetFromMap(widgetPath);
 543         gtkWidgetMap()->insert(widgetPath, gtkWindow);
 544
 545
 546         // Make all other widgets. respect the text direction
 547         if (qApp->layoutDirection() == Qt::RightToLeft)
 548             QGtkStylePrivate::gtk_widget_set_default_direction(GTK_TEXT_DIR_RTL);
 549
 550         if (!gtkWidgetMap()->contains("GtkButton")) {
 551             GtkWidget *gtkButton = QGtkStylePrivate::gtk_button_new();
 552             addWidget(gtkButton);
 553             g_signal_connect(gtkButton, "style-set", G_CALLBACK(gtkStyleSetCallback), 0);
 554             addWidget(QGtkStylePrivate::gtk_tool_button_new(NULL, "Qt"));
 555             addWidget(QGtkStylePrivate::gtk_arrow_new(GTK_ARROW_DOWN, GTK_SHADOW_NONE));
 556             addWidget(QGtkStylePrivate::gtk_hbutton_box_new());
 557             addWidget(QGtkStylePrivate::gtk_check_button_new());
 558             addWidget(QGtkStylePrivate::gtk_radio_button_new(NULL));
 559             addWidget(QGtkStylePrivate::gtk_combo_box_new());
 560             addWidget(QGtkStylePrivate::gtk_combo_box_entry_new());
 561             addWidget(QGtkStylePrivate::gtk_entry_new());
 562             addWidget(QGtkStylePrivate::gtk_frame_new(NULL));
 563             addWidget(QGtkStylePrivate::gtk_expander_new(""));
 564             addWidget(QGtkStylePrivate::gtk_statusbar_new());
 565             addWidget(QGtkStylePrivate::gtk_hscale_new((GtkAdjustment*)(QGtkStylePrivate::gtk_adjustment_new(1, 0, 1, 0, 0, 0))));
 566             addWidget(QGtkStylePrivate::gtk_hscrollbar_new(NULL));
 567             addWidget(QGtkStylePrivate::gtk_scrolled_window_new(NULL, NULL));
 568
 569             initGtkMenu();
 570             addWidget(QGtkStylePrivate::gtk_notebook_new());
 571             addWidget(QGtkStylePrivate::gtk_progress_bar_new());
 572             addWidget(QGtkStylePrivate::gtk_spin_button_new((GtkAdjustment*)
 573                                              (QGtkStylePrivate::gtk_adjustment_new(1, 0, 1, 0, 0, 0)), 0.1, 3));
 574             GtkWidget *toolbar = gtk_toolbar_new();
 575             g_signal_connect (toolbar, "notify::toolbar-style", G_CALLBACK (update_toolbar_style), toolbar);
 576             gtk_toolbar_insert((GtkToolbar*)toolbar, gtk_separator_tool_item_new(), -1);
 577             addWidget(toolbar);
 578             initGtkTreeview();
 579             addWidget(gtk_vscale_new((GtkAdjustment*)(QGtkStylePrivate::gtk_adjustment_new(1, 0, 1, 0, 0, 0))));
 580             addWidget(gtk_vscrollbar_new(NULL));
 581         }
 582         else // Rebuild map
 583         {
 584             // When styles change subwidgets can get rearranged
 585             // as with the combo box. We need to update the widget map
 586             // to reflect this;
 587             QHash<QHashableLatin1Literal, GtkWidget*> oldMap = *gtkWidgetMap();
 588             gtkWidgetMap()->clear();
 589             QHashIterator<QHashableLatin1Literal, GtkWidget*> it(oldMap);
 590             while (it.hasNext()) {
 591                 it.next();
 592                 if (!strchr(it.key().data(), '.')) {
 593                     addAllSubWidgets(it.value());
 594                 }
 595                 free(const_cast<char *>(it.key().data()));
 596             }
 597         }
 598     } else {
 599         qWarning("QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.");
 600     }
 601 }
 602
 603 /*! \internal
 604  * destroys all previously buffered widgets.
 605  */
 606 void QGtkStylePrivate::cleanupGtkWidgets()
 607 {
 608     if (!widgetMap)
 609         return;
 610     if (widgetMap->contains("GtkWindow")) // Gtk will destroy all children
 611         gtk_widget_destroy(widgetMap->value("GtkWindow"));
 612     for (QHash<QHashableLatin1Literal, GtkWidget *>::const_iterator it = widgetMap->constBegin();
 613          it != widgetMap->constEnd(); ++it)
 614         free(const_cast<char *>(it.key().data()));
 615 }
 616
 617 static bool resolveGConf()
 618 {
 619     if (!QGtkStylePrivate::gconf_client_get_default) {
 620         QGtkStylePrivate::gconf_client_get_default = (Ptr_gconf_client_get_default)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_default");
 621         QGtkStylePrivate::gconf_client_get_string =  (Ptr_gconf_client_get_string)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_string");
 622         QGtkStylePrivate::gconf_client_get_bool =  (Ptr_gconf_client_get_bool)QLibrary::resolve(QLS("gconf-2"), 4, "gconf_client_get_bool");
 623     }
 624     return (QGtkStylePrivate::gconf_client_get_default !=0);
 625 }
 626
 627 QString QGtkStylePrivate::getGConfString(const QString &value, const QString &fallback)
 628 {
 629     QString retVal = fallback;
 630     if (resolveGConf()) {
 631         g_type_init();
 632         GConfClient* client = gconf_client_get_default();
 633         GError *err = 0;
 634         char *str = gconf_client_get_string(client, qPrintable(value), &err);
 635         if (!err) {
 636             retVal = QString::fromUtf8(str);
 637             g_free(str);
 638         }
 639         g_object_unref(client);
 640         if (err)
 641             g_error_free (err);
 642     }
 643     return retVal;
 644 }
 645
 646 bool QGtkStylePrivate::getGConfBool(const QString &key, bool fallback)
 647 {
 648     bool retVal = fallback;
 649     if (resolveGConf()) {
 650         g_type_init();
 651         GConfClient* client = gconf_client_get_default();
 652         GError *err = 0;
 653         bool result = gconf_client_get_bool(client, qPrintable(key), &err);
 654         g_object_unref(client);
 655         if (!err)
 656             retVal = result;
 657         else
 658             g_error_free (err);
 659     }
 660     return retVal;
 661 }
 662
 663 QString QGtkStylePrivate::getThemeName()
 664 {
 665     QString themeName;
 666     // We try to parse the gtkrc file first
 667     // primarily to avoid resolving Gtk functions if
 668     // the KDE 3 "Qt" style is currently in use
 669     QString rcPaths = QString::fromLocal8Bit(qgetenv("GTK2_RC_FILES"));
 670     if (!rcPaths.isEmpty()) {
 671         QStringList paths = rcPaths.split(QLS(":"));
 672         foreach (const QString &rcPath, paths) {
 673             if (!rcPath.isEmpty()) {
 674                 QFile rcFile(rcPath);
 675                 if (rcFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
 676                     QTextStream in(&rcFile);
 677                     while(!in.atEnd()) {
 678                         QString line = in.readLine();
 679                         if (line.contains(QLS("gtk-theme-name"))) {
 680                             line = line.right(line.length() - line.indexOf(QLatin1Char('=')) - 1);
 681                             line.remove(QLatin1Char('\"'));
 682                             line = line.trimmed();
 683                             themeName = line;
 684                             break;
 685                         }
 686                     }
 687                 }
 688             }
 689             if (!themeName.isEmpty())
 690                 break;
 691         }
 692     }
 693
 694     // Fall back to gconf
 695     if (themeName.isEmpty() && resolveGConf())
 696         themeName = getGConfString(QLS("/desktop/gnome/interface/gtk_theme"));
 697
 698     return themeName;
 699 }
 700
 701 // Get size of the arrow controls in a GtkSpinButton
 702 int QGtkStylePrivate::getSpinboxArrowSize() const
 703 {
 704     const int MIN_ARROW_WIDTH = 6;
 705     GtkWidget *spinButton = gtkWidget("GtkSpinButton");
 706     GtkStyle *style = spinButton->style;
 707     gint size = pango_font_description_get_size (style->font_desc);
 708     gint arrow_size;
 709     arrow_size = qMax(PANGO_PIXELS (size), MIN_ARROW_WIDTH) + style->xthickness;
 710     arrow_size += arrow_size%2 + 1;
 711     return arrow_size;
 712 }
 713
 714
 715 bool QGtkStylePrivate::isKDE4Session()
 716 {
 717     static int version = -1;
 718     if (version == -1)
 719         version = qgetenv("KDE_SESSION_VERSION").toInt();
 720     return (version == 4);
 721 }
 722
 723 void QGtkStylePrivate::applyCustomPaletteHash()
 724 {
 725     QPalette menuPal = gtkWidgetPalette("GtkMenu");
 726     GdkColor gdkBg = gtkWidget("GtkMenu")->style->bg[GTK_STATE_NORMAL];
 727     QColor bgColor(gdkBg.red>>8, gdkBg.green>>8, gdkBg.blue>>8);
 728     menuPal.setBrush(QPalette::Base, bgColor);
 729     menuPal.setBrush(QPalette::Window, bgColor);
 730     qApp->setPalette(menuPal, "QMenu");
 731
 732     QPalette toolbarPal = gtkWidgetPalette("GtkToolbar");
 733     qApp->setPalette(toolbarPal, "QToolBar");
 734
 735     QPalette menuBarPal = gtkWidgetPalette("GtkMenuBar");
 736     qApp->setPalette(menuBarPal, "QMenuBar");
 737 }
 738
 739 /*! \internal
 740  *  Returns the gtk Widget that should be used to determine text foreground and background colors.
 741 */
 742 GtkWidget* QGtkStylePrivate::getTextColorWidget() const
 743 {
 744     return  gtkWidget("GtkEntry");
 745 }
 746
 747 void QGtkStylePrivate::setupGtkWidget(GtkWidget* widget)
 748 {
 749     if (Q_GTK_IS_WIDGET(widget)) {
 750         static GtkWidget* protoLayout = 0;
 751         if (!protoLayout) {
 752             protoLayout = QGtkStylePrivate::gtk_fixed_new();
 753             QGtkStylePrivate::gtk_container_add((GtkContainer*)(gtkWidgetMap()->value("GtkWindow")), protoLayout);
 754         }
 755         Q_ASSERT(protoLayout);
 756
 757         if (!widget->parent && !GTK_WIDGET_TOPLEVEL(widget))
 758             QGtkStylePrivate::gtk_container_add((GtkContainer*)(protoLayout), widget);
 759         QGtkStylePrivate::gtk_widget_realize(widget);
 760     }
 761 }
 762
 763 void QGtkStylePrivate::removeWidgetFromMap(const QHashableLatin1Literal &path)
 764 {
 765     WidgetMap *map = gtkWidgetMap();
 766     WidgetMap::iterator it = map->find(path);
 767     if (it != map->end()) {
 768         free(const_cast<char *>(it.key().data()));
 769         map->erase(it);
 770     }
 771 }
 772
 773 void QGtkStylePrivate::addWidgetToMap(GtkWidget *widget)
 774 {
 775     if (Q_GTK_IS_WIDGET(widget)) {
 776         gtk_widget_realize(widget);
 777         QHashableLatin1Literal widgetPath = classPath(widget);
 778
 779         removeWidgetFromMap(widgetPath);
 780         gtkWidgetMap()->insert(widgetPath, widget);
 781 #ifdef DUMP_GTK_WIDGET_TREE
 782         qWarning("Inserted Gtk Widget: %s", widgetPath.data());
 783 #endif
 784     }
 785  }
 786
 787 void QGtkStylePrivate::addAllSubWidgets(GtkWidget *widget, gpointer v)
 788 {
 789     Q_UNUSED(v);
 790     addWidgetToMap(widget);
 791     if (GTK_CHECK_TYPE ((widget), gtk_container_get_type()))
 792         gtk_container_forall((GtkContainer*)widget, addAllSubWidgets, NULL);
 793 }
 794
 795 // Updates window/windowtext palette based on the indicated gtk widget
 796 QPalette QGtkStylePrivate::gtkWidgetPalette(const QHashableLatin1Literal &gtkWidgetName) const
 797 {
 798     GtkWidget *gtkWidget = QGtkStylePrivate::gtkWidget(gtkWidgetName);
 799     Q_ASSERT(gtkWidget);
 800     QPalette pal = QApplication::palette();
 801     GdkColor gdkBg = gtkWidget->style->bg[GTK_STATE_NORMAL];
 802     GdkColor gdkText = gtkWidget->style->fg[GTK_STATE_NORMAL];
 803     GdkColor gdkDisabledText = gtkWidget->style->fg[GTK_STATE_INSENSITIVE];
 804     QColor bgColor(gdkBg.red>>8, gdkBg.green>>8, gdkBg.blue>>8);
 805     QColor textColor(gdkText.red>>8, gdkText.green>>8, gdkText.blue>>8);
 806     QColor disabledTextColor(gdkDisabledText.red>>8, gdkDisabledText.green>>8, gdkDisabledText.blue>>8);
 807     pal.setBrush(QPalette::Window, bgColor);
 808     pal.setBrush(QPalette::Button, bgColor);
 809     pal.setBrush(QPalette::All, QPalette::WindowText, textColor);
 810     pal.setBrush(QPalette::Disabled, QPalette::WindowText, disabledTextColor);
 811     pal.setBrush(QPalette::All, QPalette::ButtonText, textColor);
 812     pal.setBrush(QPalette::Disabled, QPalette::ButtonText, disabledTextColor);
 813     return pal;
 814 }
 815
 816
 817 void QGtkStyleUpdateScheduler::updateTheme()
 818 {
 819     static QString oldTheme(QLS("qt_not_set"));
 820     QPixmapCache::clear();
 821
 822     QFont font = QGtkStylePrivate::getThemeFont();
 823     if (QApplication::font() != font)
 824         qApp->setFont(font);
 825
 826       if (oldTheme != QGtkStylePrivate::getThemeName()) {
 827           oldTheme = QGtkStylePrivate::getThemeName();
 828           QPalette newPalette = qApp->style()->standardPalette();
 829           QApplicationPrivate::setSystemPalette(newPalette);
 830           QApplication::setPalette(newPalette);
 831           if (!QGtkStylePrivate::instances.isEmpty()) {
 832               QGtkStylePrivate::instances.last()->initGtkWidgets();
 833               QGtkStylePrivate::instances.last()->applyCustomPaletteHash();
 834           }
 835           QList<QWidget*> widgets = QApplication::allWidgets();
 836           // Notify all widgets that size metrics might have changed
 837           foreach (QWidget *widget, widgets) {
 838               QEvent e(QEvent::StyleChange);
 839               QApplication::sendEvent(widget, &e);
 840           }
 841       }
 842     QIconLoader::instance()->updateSystemTheme();
 843 }
 844
 845 void QGtkStylePrivate::addWidget(GtkWidget *widget)
 846 {
 847     if (widget) {
 848         setupGtkWidget(widget);
 849         addAllSubWidgets(widget);
 850     }
 851 }
 852
 853
 854 // Fetch the application font from the pango font description
 855 // contained in the theme.
 856 QFont QGtkStylePrivate::getThemeFont()
 857 {
 858     QFont font;
 859     GtkStyle *style = gtkStyle();
 860     if (style && qApp->desktopSettingsAware())
 861     {
 862         PangoFontDescription *gtk_font = style->font_desc;
 863         font.setPointSizeF((float)(pango_font_description_get_size(gtk_font))/PANGO_SCALE);
 864
 865         QString family = QString::fromLatin1(pango_font_description_get_family(gtk_font));
 866         if (!family.isEmpty())
 867             font.setFamily(family);
 868
 869         int weight = pango_font_description_get_weight(gtk_font);
 870         if (weight >= PANGO_WEIGHT_HEAVY)
 871             font.setWeight(QFont::Black);
 872         else if (weight >= PANGO_WEIGHT_BOLD)
 873             font.setWeight(QFont::Bold);
 874         else if (weight >= PANGO_WEIGHT_SEMIBOLD)
 875             font.setWeight(QFont::DemiBold);
 876         else if (weight >= PANGO_WEIGHT_NORMAL)
 877             font.setWeight(QFont::Normal);
 878         else
 879             font.setWeight(QFont::Light);
 880
 881         PangoStyle fontstyle = pango_font_description_get_style(gtk_font);
 882         if (fontstyle == PANGO_STYLE_ITALIC)
 883             font.setStyle(QFont::StyleItalic);
 884         else if (fontstyle == PANGO_STYLE_OBLIQUE)
 885             font.setStyle(QFont::StyleOblique);
 886         else
 887             font.setStyle(QFont::StyleNormal);
 888     }
 889     return font;
 890 }
 891
 892
 893 // ----------- Native file dialogs -----------
 894
 895 // Extract filter list from expressions of type: foo (*.a *.b *.c)"
 896 QStringList QGtkStylePrivate::extract_filter(const QString &rawFilter)
 897 {
 898     QString result = rawFilter;
 899     QRegExp r(QString::fromLatin1("^([^()]*)\\(([a-zA-Z0-9_.*? +;#\\-\\[\\]@\\{\\}/!<>\\$%&=^~:\\|]*)\\)$"));
 900     int index = r.indexIn(result);
 901     if (index >= 0)
 902         result = r.cap(2);
 903     return result.split(QLatin1Char(' '));
 904 }
 905
 906 extern QStringList qt_make_filter_list(const QString &filter);
 907
 908 #ifndef QT_NO_FILEDIALOG
 909 void QGtkStylePrivate::setupGtkFileChooser(GtkWidget* gtkFileChooser, QWidget *parent,
 910                                 const QString &dir, const QString &filter, QString *selectedFilter,
 911                                 QFileDialog::Options options, bool isSaveDialog,
 912                                 QHash<GtkFileFilter *, QString> *filterMap)
 913 {
 914     g_object_set(gtkFileChooser, "do-overwrite-confirmation", gboolean(!(options & QFileDialog::DontConfirmOverwrite)), NULL);
 915     g_object_set(gtkFileChooser, "local_only", gboolean(true), NULL);
 916     if (!filter.isEmpty()) {
 917         QStringList filters = qt_make_filter_list(filter);
 918         foreach (const QString &rawfilter, filters) {
 919             GtkFileFilter *gtkFilter = QGtkStylePrivate::gtk_file_filter_new ();
 920             QString name = rawfilter.left(rawfilter.indexOf(QLatin1Char('(')));
 921             QStringList extensions = extract_filter(rawfilter);
 922             QGtkStylePrivate::gtk_file_filter_set_name(gtkFilter, qPrintable(name.isEmpty() ? extensions.join(QLS(", ")) : name));
 923
 924             foreach (const QString &fileExtension, extensions) {
 925                 // Note Gtk file dialogs are by default case sensitive
 926                 // and only supports basic glob syntax so we
 927                 // rewrite .xyz to .[xX][yY][zZ]
 928                 QString caseInsensitive;
 929                 for (int i = 0 ; i < fileExtension.length() ; ++i) {
 930                     QChar ch = fileExtension.at(i);
 931                     if (ch.isLetter()) {
 932                         caseInsensitive.append(
 933                                 QLatin1Char('[') +
 934                                 ch.toLower() +
 935                                 ch.toUpper() +
 936                                 QLatin1Char(']'));
 937                     } else {
 938                         caseInsensitive.append(ch);
 939                     }
 940                 }
 941                 QGtkStylePrivate::gtk_file_filter_add_pattern (gtkFilter, qPrintable(caseInsensitive));
 942
 943             }
 944             if (filterMap)
 945                 filterMap->insert(gtkFilter, rawfilter);
 946             QGtkStylePrivate::gtk_file_chooser_add_filter((GtkFileChooser*)gtkFileChooser, gtkFilter);
 947             if (selectedFilter && (rawfilter == *selectedFilter))
 948                 QGtkStylePrivate::gtk_file_chooser_set_filter((GtkFileChooser*)gtkFileChooser, gtkFilter);
 949         }
 950     }
 951
 952     // Using the currently active window is not entirely correct, however
 953     // it gives more sensible behavior for applications that do not provide a
 954     // parent
 955     QWidget *modalFor = parent ? parent->window() : qApp->activeWindow();
 956     if (modalFor) {
 957         QGtkStylePrivate::gtk_widget_realize(gtkFileChooser); // Creates X window
 958         XSetTransientForHint(QGtkStylePrivate::gdk_x11_drawable_get_xdisplay(gtkFileChooser->window),
 959                              QGtkStylePrivate::gdk_x11_drawable_get_xid(gtkFileChooser->window),
 960                              modalFor->winId());
 961 #ifdef Q_WS_X11
 962         QGtkStylePrivate::gdk_x11_window_set_user_time (gtkFileChooser->window, QX11Info::appUserTime());
 963 #endif
 964
 965     }
 966
 967     QFileInfo fileinfo(dir);
 968     if (dir.isEmpty())
 969         fileinfo.setFile(QDir::currentPath());
 970     fileinfo.makeAbsolute();
 971     if (fileinfo.isDir()) {
 972         QGtkStylePrivate::gtk_file_chooser_set_current_folder((GtkFileChooser*)gtkFileChooser, qPrintable(dir));
 973     } else if (isSaveDialog) {
 974         QGtkStylePrivate::gtk_file_chooser_set_current_folder((GtkFileChooser*)gtkFileChooser, qPrintable(fileinfo.absolutePath()));
 975         QGtkStylePrivate::gtk_file_chooser_set_current_name((GtkFileChooser*)gtkFileChooser, qPrintable(fileinfo.fileName()));
 976     } else {
 977         QGtkStylePrivate::gtk_file_chooser_set_filename((GtkFileChooser*)gtkFileChooser, qPrintable(dir));
 978     }
 979 }
 980
 981 QString QGtkStylePrivate::openFilename(QWidget *parent, const QString &caption, const QString &dir, const QString &filter,
 982                             QString *selectedFilter, QFileDialog::Options options)
 983 {
 984     QHash<GtkFileFilter *, QString> filterMap;
 985     GtkWidget *gtkFileChooser = QGtkStylePrivate::gtk_file_chooser_dialog_new (qPrintable(caption),
 986                                                              NULL,
 987                                                              GTK_FILE_CHOOSER_ACTION_OPEN,
 988                                                              GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
 989                                                              GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
 990                                                              NULL);
 991
 992     setupGtkFileChooser(gtkFileChooser, parent, dir, filter, selectedFilter, options, false, &filterMap);
 993
 994     QWidget modal_widget;
 995     modal_widget.setAttribute(Qt::WA_NoChildEventsForParent, true);
 996     modal_widget.setParent(parent, Qt::Window);
 997     modal_widget.createWinId();
 998     QGuiApplicationPrivate::showModalWindow(modal_widget.windowHandle());
 999
1000     QString filename;
1001     if (QGtkStylePrivate::gtk_dialog_run ((GtkDialog*)gtkFileChooser) == GTK_RESPONSE_ACCEPT) {
1002         char *gtk_filename = QGtkStylePrivate::gtk_file_chooser_get_filename ((GtkFileChooser*)gtkFileChooser);
1003         filename = QString::fromUtf8(gtk_filename);
1004         g_free (gtk_filename);
1005         if (selectedFilter) {
1006             GtkFileFilter *gtkFilter = QGtkStylePrivate::gtk_file_chooser_get_filter ((GtkFileChooser*)gtkFileChooser);
1007             *selectedFilter = filterMap.value(gtkFilter);
1008         }
1009     }
1010
1011     QApplicationPrivate::hideModalWindow(modal_widget.windowHandle());
1012     gtk_widget_destroy (gtkFileChooser);
1013     return filename;
1014 }
1015
1016
1017 QString QGtkStylePrivate::openDirectory(QWidget *parent, const QString &caption, const QString &dir, QFileDialog::Options options)
1018 {
1019     QHash<GtkFileFilter *, QString> filterMap;
1020     GtkWidget *gtkFileChooser = QGtkStylePrivate::gtk_file_chooser_dialog_new (qPrintable(caption),
1021                                                              NULL,
1022                                                              GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER,
1023                                                              GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
1024                                                              GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
1025                                                              NULL);
1026
1027     setupGtkFileChooser(gtkFileChooser, parent, dir, QString(), 0, options);
1028     QWidget modal_widget;
1029     modal_widget.setAttribute(Qt::WA_NoChildEventsForParent, true);
1030     modal_widget.setParent(parent, Qt::Window);
1031     modal_widget.createWinId();
1032     QGuiApplicationPrivate::showModalWindow(modal_widget.windowHandle());
1033
1034     QString filename;
1035     if (QGtkStylePrivate::gtk_dialog_run ((GtkDialog*)gtkFileChooser) == GTK_RESPONSE_ACCEPT) {
1036         char *gtk_filename = QGtkStylePrivate::gtk_file_chooser_get_filename ((GtkFileChooser*)gtkFileChooser);
1037         filename = QString::fromUtf8(gtk_filename);
1038         g_free (gtk_filename);
1039     }
1040
1041     QApplicationPrivate::hideModalWindow(modal_widget.windowHandle());
1042     gtk_widget_destroy (gtkFileChooser);
1043     return filename;
1044 }
1045
1046 QStringList QGtkStylePrivate::openFilenames(QWidget *parent, const QString &caption, const QString &dir, const QString &filter,
1047                                  QString *selectedFilter, QFileDialog::Options options)
1048 {
1049     QStringList filenames;
1050     QHash<GtkFileFilter *, QString> filterMap;
1051     GtkWidget *gtkFileChooser = QGtkStylePrivate::gtk_file_chooser_dialog_new (qPrintable(caption),
1052                                                              NULL,
1053                                                              GTK_FILE_CHOOSER_ACTION_OPEN,
1054                                                              GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
1055                                                              GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
1056                                                              NULL);
1057
1058     setupGtkFileChooser(gtkFileChooser, parent, dir, filter, selectedFilter, options, false, &filterMap);
1059     g_object_set(gtkFileChooser, "select-multiple", gboolean(true), NULL);
1060
1061     QWidget modal_widget;
1062     modal_widget.setAttribute(Qt::WA_NoChildEventsForParent, true);
1063     modal_widget.setParent(parent, Qt::Window);
1064     modal_widget.createWinId();
1065     QGuiApplicationPrivate::showModalWindow(modal_widget.windowHandle());
1066
1067     if (gtk_dialog_run ((GtkDialog*)gtkFileChooser) == GTK_RESPONSE_ACCEPT) {
1068         GSList *gtk_file_names = QGtkStylePrivate::gtk_file_chooser_get_filenames((GtkFileChooser*)gtkFileChooser);
1069         for (GSList *iterator  = gtk_file_names ; iterator; iterator = iterator->next)
1070             filenames << QString::fromUtf8((const char*)iterator->data);
1071         g_slist_free(gtk_file_names);
1072         if (selectedFilter) {
1073             GtkFileFilter *gtkFilter = QGtkStylePrivate::gtk_file_chooser_get_filter ((GtkFileChooser*)gtkFileChooser);
1074             *selectedFilter = filterMap.value(gtkFilter);
1075         }
1076     }
1077
1078     QApplicationPrivate::hideModalWindow(modal_widget.windowHandle());
1079     gtk_widget_destroy (gtkFileChooser);
1080     return filenames;
1081 }
1082
1083 QString QGtkStylePrivate::saveFilename(QWidget *parent, const QString &caption, const QString &dir, const QString &filter,
1084                            QString *selectedFilter, QFileDialog::Options options)
1085 {
1086     QHash<GtkFileFilter *, QString> filterMap;
1087     GtkWidget *gtkFileChooser = QGtkStylePrivate::gtk_file_chooser_dialog_new (qPrintable(caption),
1088                                                              NULL,
1089                                                              GTK_FILE_CHOOSER_ACTION_SAVE,
1090                                                              GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
1091                                                              GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
1092                                                              NULL);
1093     setupGtkFileChooser(gtkFileChooser, parent, dir, filter, selectedFilter, options, true, &filterMap);
1094
1095     QWidget modal_widget;
1096     modal_widget.setAttribute(Qt::WA_NoChildEventsForParent, true);
1097     modal_widget.setParent(parent, Qt::Window);
1098     modal_widget.createWinId();
1099     QGuiApplicationPrivate::showModalWindow(modal_widget.windowHandle());
1100
1101     QString filename;
1102     if (QGtkStylePrivate::gtk_dialog_run ((GtkDialog*)gtkFileChooser) == GTK_RESPONSE_ACCEPT) {
1103         char *gtk_filename = QGtkStylePrivate::gtk_file_chooser_get_filename ((GtkFileChooser*)gtkFileChooser);
1104         filename = QString::fromUtf8(gtk_filename);
1105         g_free (gtk_filename);
1106         if (selectedFilter) {
1107             GtkFileFilter *gtkFilter = QGtkStylePrivate::gtk_file_chooser_get_filter ((GtkFileChooser*)gtkFileChooser);
1108             *selectedFilter = filterMap.value(gtkFilter);
1109         }
1110     }
1111
1112     QApplicationPrivate::hideModalWindow(modal_widget.windowHandle());
1113     gtk_widget_destroy (gtkFileChooser);
1114     return filename;
1115 }
1116 #endif
1117
1118 QIcon QGtkStylePrivate::getFilesystemIcon(const QFileInfo &info)
1119 {
1120     QIcon icon;
1121     if (gnome_vfs_init && gnome_icon_lookup_sync) {
1122         gnome_vfs_init();
1123         GtkIconTheme *theme = gtk_icon_theme_get_default();
1124         QByteArray fileurl = QUrl::fromLocalFile(info.absoluteFilePath()).toEncoded();
1125         char * icon_name = gnome_icon_lookup_sync(theme,
1126                                                   NULL,
1127                                                   fileurl.data(),
1128                                                   NULL,
1129                                                   GNOME_ICON_LOOKUP_FLAGS_NONE,
1130                                                   NULL);
1131         QString iconName = QString::fromUtf8(icon_name);
1132         g_free(icon_name);
1133         if (iconName.startsWith(QLatin1Char('/')))
1134             return QIcon(iconName);
1135         return QIcon::fromTheme(iconName);
1136     }
1137     return icon;
1138 }
1139
1140 bool operator==(const QHashableLatin1Literal &l1, const QHashableLatin1Literal &l2)
1141 {
1142     return l1.size() == l2.size() || qstrcmp(l1.data(), l2.data()) == 0;
1143 }
1144
1145 // copied from qHash.cpp
1146 uint qHash(const QHashableLatin1Literal &key)
1147 {
1148     int n = key.size();
1149     const uchar *p = reinterpret_cast<const uchar *>(key.data());
1150     uint h = 0;
1151     uint g;
1152
1153     while (n--) {
1154         h = (h << 4) + *p++;
1155         if ((g = (h & 0xf0000000)) != 0)
1156             h ^= g >> 23;
1157         h &= ~g;
1158     }
1159     return h;
1160 }
1161
1162 QT_END_NAMESPACE
1163
1164 #endif // !defined(QT_NO_STYLE_GTK)