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 000000000..4a47c279d
--- /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
+