| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt Charts module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** 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. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) 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.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-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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 |