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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
****************************************************************************/
#include "declarativechartnode_p.h"
#include "declarativeabstractrendernode_p.h"
#include <QtQuick/QQuickWindow>
#include <QtQuick/QSGImageNode>
#include <QtQuick/QSGRendererInterface>
#ifndef QT_NO_OPENGL
# include "declarativeopenglrendernode_p.h"
#endif
QT_CHARTS_BEGIN_NAMESPACE
// This node handles displaying of the chart itself
DeclarativeChartNode::DeclarativeChartNode(QQuickWindow *window) :
QSGRootNode(),
m_window(window),
m_renderNode(nullptr),
m_imageNode(nullptr)
{
// Create a DeclarativeRenderNode for correct QtQuick Backend
#ifndef QT_NO_OPENGL
if (m_window->rendererInterface()->graphicsApi() == QSGRendererInterface::OpenGL)
m_renderNode = new DeclarativeOpenGLRenderNode(m_window);
#endif
if (m_renderNode) {
m_renderNode->setFlag(OwnedByParent);
appendChildNode(m_renderNode);
m_renderNode->setRect(QRectF(0, 0, 0, 0)); // Hide child node by default
}
}
DeclarativeChartNode::~DeclarativeChartNode()
{
}
// Must be called on render thread and in context
void DeclarativeChartNode::createTextureFromImage(const QImage &chartImage)
{
static auto const defaultTextureOptions = QQuickWindow::CreateTextureOptions(QQuickWindow::TextureHasAlphaChannel |
QQuickWindow::TextureOwnsGLTexture);
auto texture = m_window->createTextureFromImage(chartImage, defaultTextureOptions);
// Create Image node if needed
if (!m_imageNode) {
m_imageNode = m_window->createImageNode();
m_imageNode->setFlag(OwnedByParent);
m_imageNode->setOwnsTexture(true);
m_imageNode->setTexture(texture);
prependChildNode(m_imageNode);
} else {
m_imageNode->setTexture(texture);
}
if (!m_rect.isEmpty())
m_imageNode->setRect(m_rect);
}
void DeclarativeChartNode::setRect(const QRectF &rect)
{
m_rect = rect;
if (m_imageNode)
m_imageNode->setRect(rect);
}
QT_CHARTS_END_NAMESPACE
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