diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbscreen.cpp')
-rw-r--r-- | src/plugins/platforms/xcb/qxcbscreen.cpp | 102 |
1 files changed, 85 insertions, 17 deletions
diff --git a/src/plugins/platforms/xcb/qxcbscreen.cpp b/src/plugins/platforms/xcb/qxcbscreen.cpp index f74244e13c..dc6846b20b 100644 --- a/src/plugins/platforms/xcb/qxcbscreen.cpp +++ b/src/plugins/platforms/xcb/qxcbscreen.cpp @@ -1,31 +1,37 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. -** Contact: http://www.qt.io/licensing/ +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 or version 3 as published by the Free -** Software Foundation and appearing in the file LICENSE.LGPLv21 and -** LICENSE.LGPLv3 included in the packaging of this file. Please review the -** following information to ensure the GNU Lesser General Public License -** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** -** As a special exception, The Qt Company gives you certain additional -** rights. These rights are described in The Qt Company LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** @@ -41,6 +47,7 @@ #include <stdio.h> #include <QDebug> +#include <QtAlgorithms> #include <qpa/qwindowsysteminterface.h> #include <private/qmath_p.h> @@ -69,7 +76,8 @@ QXcbVirtualDesktop::~QXcbVirtualDesktop() QXcbScreen *QXcbVirtualDesktop::screenAt(const QPoint &pos) const { - foreach (QXcbScreen *screen, connection()->screens()) { + const auto screens = connection()->screens(); + for (QXcbScreen *screen : screens) { if (screen->virtualDesktop() == this && screen->geometry().contains(pos)) return screen; } @@ -150,7 +158,7 @@ void QXcbVirtualDesktop::updateWorkArea() QRect workArea = getWorkArea(); if (m_workArea != workArea) { m_workArea = workArea; - foreach (QPlatformScreen *screen, m_screens) + for (QPlatformScreen *screen : qAsConst(m_screens)) ((QXcbScreen *)screen)->updateAvailableGeometry(); } } @@ -353,6 +361,66 @@ void QXcbScreen::windowShown(QXcbWindow *window) } } +QSurfaceFormat QXcbScreen::surfaceFormatFor(const QSurfaceFormat &format) const +{ + const xcb_visualid_t xcb_visualid = connection()->hasDefaultVisualId() ? connection()->defaultVisualId() + : screen()->root_visual; + const xcb_visualtype_t *xcb_visualtype = visualForId(xcb_visualid); + + const int redSize = qPopulationCount(xcb_visualtype->red_mask); + const int greenSize = qPopulationCount(xcb_visualtype->green_mask); + const int blueSize = qPopulationCount(xcb_visualtype->blue_mask); + + QSurfaceFormat result = format; + + if (result.redBufferSize() < 0) + result.setRedBufferSize(redSize); + + if (result.greenBufferSize() < 0) + result.setGreenBufferSize(greenSize); + + if (result.blueBufferSize() < 0) + result.setBlueBufferSize(blueSize); + + return result; +} + +const xcb_visualtype_t *QXcbScreen::visualForFormat(const QSurfaceFormat &format) const +{ + const xcb_visualtype_t *candidate = nullptr; + + for (const xcb_visualtype_t &xcb_visualtype : m_visuals) { + + const int redSize = qPopulationCount(xcb_visualtype.red_mask); + const int greenSize = qPopulationCount(xcb_visualtype.green_mask); + const int blueSize = qPopulationCount(xcb_visualtype.blue_mask); + const int alphaSize = depthOfVisual(xcb_visualtype.visual_id) - redSize - greenSize - blueSize; + + if (format.redBufferSize() != -1 && redSize != format.redBufferSize()) + continue; + + if (format.greenBufferSize() != -1 && greenSize != format.greenBufferSize()) + continue; + + if (format.blueBufferSize() != -1 && blueSize != format.blueBufferSize()) + continue; + + if (format.alphaBufferSize() != -1 && alphaSize != format.alphaBufferSize()) + continue; + + // Try to find a RGB visual rather than e.g. BGR or GBR + if (qCountTrailingZeroBits(xcb_visualtype.blue_mask) == 0) + return &xcb_visualtype; + + // In case we do not find anything we like, just remember the first one + // and hope for the best: + if (!candidate) + candidate = &xcb_visualtype; + } + + return candidate; +} + void QXcbScreen::sendStartupMessage(const QByteArray &message) const { xcb_window_t rootWindow = root(); @@ -397,7 +465,7 @@ quint8 QXcbScreen::depthOfVisual(xcb_visualid_t visualid) const QImage::Format QXcbScreen::format() const { - return QImage::Format_RGB32; + return qt_xcb_imageFormatForVisual(connection(), screen()->root_depth, visualForId(screen()->root_visual)); } QDpi QXcbScreen::virtualDpi() const |