File indexing completed on 2024-04-28 05:47:17

 /*****************************************************************************
  *   Copyright 2013 - 2015 Yichao Yu <yyc1992@gmail.com>                     *
  *                                                                           *
  *   This program is free software; you can redistribute it and/or modify    *
  *   it under the terms of the GNU Lesser General Public License as          *
  *   published by the Free Software Foundation; either version 2.1 of the    *
  *   License, or (at your option) version 3, or any later version accepted   *
  *   by the membership of KDE e.V. (or its successor approved by the         *
  *   membership of KDE e.V.), which shall act as a proxy defined in          *
  *   Section 6 of version 3 of the license.                                  *
  *                                                                           *
  *   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       *
  *   Lesser General Public License for more details.                         *
  *                                                                           *
  *   You should have received a copy of the GNU Lesser General Public        *
  *   License along with this library. If not,                                *
  *   see <http://www.gnu.org/licenses/>.                                     *
  *****************************************************************************/
 
 #include "config.h"
 #include <qtcurve-utils/qtprops.h>
 
 #include "qtcurve_p.h"
 #include "argbhelper.h"
 #include <QMenu>
 
 namespace QtCurve {
 
 __attribute__((hot)) void
 Style::prePolish(QWidget *widget) const
 {
     if (!widget)
         return;
     QtcQWidgetProps props(widget);
     // HACK:
     // Request for RGBA format on toplevel widgets before they
     // create native windows. These windows are typically shown after being
     // created before entering the main loop and therefore do not have a
     // chance to be polished before creating window id. (NOTE: somehow the popup
     // menu on mdi sub window in QtDesigner has the same problem).
     // TODO:
     //     Use all information to check if a widget should be transparent.
     //     Need to figure out how Qt5's xcb backend deal with RGB native window
     //     as a child of a RGBA window. However, since Qt5 will not recreate
     //     native window, this is probably easier to deal with than Qt4.
     //     (After we create a RGB window, Qt5 will not override it).
     if (!(widget->windowFlags() & Qt::MSWindowsOwnDC) &&
         !qtcGetWid(widget) && !props->prePolishing) {
         // Skip MSWindowsOwnDC since it is set for QGLWidget and not likely to
         // be used in other cases.
         if ((opts.bgndOpacity != 100 && (qtcIsWindow(widget) ||
                                          qtcIsToolTip(widget))) ||
             (opts.dlgOpacity != 100 && qtcIsDialog(widget)) ||
             (opts.menuBgndOpacity != 100 &&
              (qobject_cast<QMenu*>(widget) ||
               widget->inherits("QComboBoxPrivateContainer")))) {
             props->prePolishing = true;
             addAlphaChannel(widget);
             // QWidgetPrivate::updateIsTranslucent sets the format back
             // is Qt::WA_TranslucentBackground is not set. So we need to do
             // this repeatedly
             props->prePolishing = false;
         }
     }
 }
 }