diff options
Diffstat (limited to 'examples/wayland/server-buffer/compositor/serverbufferitem.cpp')
-rw-r--r-- | examples/wayland/server-buffer/compositor/serverbufferitem.cpp | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/examples/wayland/server-buffer/compositor/serverbufferitem.cpp b/examples/wayland/server-buffer/compositor/serverbufferitem.cpp new file mode 100644 index 00000000..4a47c279 --- /dev/null +++ b/examples/wayland/server-buffer/compositor/serverbufferitem.cpp @@ -0,0 +1,126 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the Qt Compositor. +** +** $QT_BEGIN_LICENSE:BSD$ +** You may use this file under the terms of the BSD license as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names +** of its contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "serverbufferitem.h" + +#include "serverbuffertextureprovider.h" + +#include <QtQuick/QSGSimpleTextureNode> +#include <QtQuick/QQuickWindow> + +#include <QtCompositor/private/qwlserverbufferintegration_p.h> + +QT_BEGIN_NAMESPACE + +ServerBufferItem::ServerBufferItem(QtWayland::ServerBuffer *serverBuffer, QQuickItem *parent) + : QQuickItem(parent) + , m_server_buffer(serverBuffer) + , m_provider(new ServerBufferTextureProvider) + , m_useTextureAlpha(false) +{ + setFlag(QQuickItem::ItemHasContents); + setWidth(serverBuffer->size().width()); + setHeight(serverBuffer->size().height()); + update(); +} + +ServerBufferItem::~ServerBufferItem() +{ +} + +bool ServerBufferItem::isYInverted() const +{ + return m_server_buffer->isYInverted(); +} + +int ServerBufferItem::depth() const +{ + return m_server_buffer->format() == QtWayland::ServerBuffer::RGBA32 ? 32 : 8; +} + +QSGTextureProvider *ServerBufferItem::textureProvider() const +{ + return m_provider; +} + +void ServerBufferItem::updateTexture() +{ + if (m_provider->texture()) + return; + + QQuickWindow::CreateTextureOptions opt = QQuickWindow::TextureHasAlphaChannel; + GLuint texture; + glGenTextures(1,&texture); + glBindTexture(GL_TEXTURE_2D, texture); + m_server_buffer->bindTextureToBuffer(); + m_provider->setTexture(window()->createTextureFromId(texture, m_server_buffer->size(), opt)); +} + +QSGNode *ServerBufferItem::updatePaintNode(QSGNode *oldNode, UpdatePaintNodeData *) +{ + updateTexture(); + QSGSimpleTextureNode *node = static_cast<QSGSimpleTextureNode *>(oldNode); + + if (!node) { + node = new QSGSimpleTextureNode(); + } + + node->setTexture(m_provider->texture()); + + if (isYInverted()) { + node->setRect(0, height(), width(), -height()); + } else { + node->setRect(0, 0, width(), height()); + } + + return node; +} + +void ServerBufferItem::setUseTextureAlpha(bool useTextureAlpha) +{ + m_useTextureAlpha = useTextureAlpha; + + if ((flags() & ItemHasContents) != 0) { + update(); + } +} + +QT_END_NAMESPACE + |