| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
|---|---|
| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
| 3 | |
| 4 | #include "declarativechartnode_p.h" |
| 5 | #include "declarativeabstractrendernode_p.h" |
| 6 | |
| 7 | #include <QtQuick/QQuickWindow> |
| 8 | #include <QtQuick/QSGImageNode> |
| 9 | #include <QtQuick/QSGRendererInterface> |
| 10 | |
| 11 | #ifndef QT_NO_OPENGL |
| 12 | # include "declarativeopenglrendernode_p.h" |
| 13 | #endif |
| 14 | |
| 15 | QT_BEGIN_NAMESPACE |
| 16 | |
| 17 | // This node handles displaying of the chart itself |
| 18 | DeclarativeChartNode::DeclarativeChartNode(QQuickWindow *window) : |
| 19 | QSGRootNode(), |
| 20 | m_window(window), |
| 21 | m_renderNode(nullptr), |
| 22 | m_imageNode(nullptr) |
| 23 | { |
| 24 | // Create a DeclarativeRenderNode for correct QtQuick Backend |
| 25 | #ifndef QT_NO_OPENGL |
| 26 | if (m_window->rendererInterface()->graphicsApi() == QSGRendererInterface::OpenGL) |
| 27 | m_renderNode = new DeclarativeOpenGLRenderNode(m_window); |
| 28 | #endif |
| 29 | |
| 30 | if (m_renderNode) { |
| 31 | m_renderNode->setFlag(OwnedByParent); |
| 32 | appendChildNode(node: m_renderNode); |
| 33 | m_renderNode->setRect(QRectF(0, 0, 0, 0)); // Hide child node by default |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | DeclarativeChartNode::~DeclarativeChartNode() |
| 38 | { |
| 39 | } |
| 40 | |
| 41 | // Must be called on render thread and in context |
| 42 | void DeclarativeChartNode::createTextureFromImage(const QImage &chartImage) |
| 43 | { |
| 44 | static auto const defaultTextureOptions = QQuickWindow::CreateTextureOptions(QQuickWindow::TextureHasAlphaChannel | |
| 45 | QQuickWindow::TextureOwnsGLTexture); |
| 46 | |
| 47 | auto texture = m_window->createTextureFromImage(image: chartImage, options: defaultTextureOptions); |
| 48 | // Create Image node if needed |
| 49 | if (!m_imageNode) { |
| 50 | m_imageNode = m_window->createImageNode(); |
| 51 | m_imageNode->setFlag(OwnedByParent); |
| 52 | m_imageNode->setOwnsTexture(true); |
| 53 | m_imageNode->setTexture(texture); |
| 54 | prependChildNode(node: m_imageNode); |
| 55 | } else { |
| 56 | m_imageNode->setTexture(texture); |
| 57 | } |
| 58 | if (!m_rect.isEmpty()) |
| 59 | m_imageNode->setRect(m_rect); |
| 60 | } |
| 61 | |
| 62 | void DeclarativeChartNode::setRect(const QRectF &rect) |
| 63 | { |
| 64 | m_rect = rect; |
| 65 | |
| 66 | if (m_imageNode) |
| 67 | m_imageNode->setRect(rect); |
| 68 | } |
| 69 | |
| 70 | QT_END_NAMESPACE |
| 71 |