1// Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "viewportnode_p.h"
5#include <Qt3DRender/qviewport.h>
6#include <Qt3DRender/private/qviewport_p.h>
7
8QT_BEGIN_NAMESPACE
9
10using namespace Qt3DCore;
11
12namespace Qt3DRender {
13namespace Render {
14
15ViewportNode::ViewportNode()
16 : FrameGraphNode(FrameGraphNode::Viewport)
17 , m_xMin(0.0f)
18 , m_yMin(0.0f)
19 , m_xMax(1.0f)
20 , m_yMax(1.0f)
21 , m_gamma(2.2f)
22{
23}
24
25
26void ViewportNode::syncFromFrontEnd(const QNode *frontEnd, bool firstTime)
27{
28 const QViewport *node = qobject_cast<const QViewport *>(object: frontEnd);
29 if (!node)
30 return;
31
32 FrameGraphNode::syncFromFrontEnd(frontEnd, firstTime);
33
34 const QRectF oldRect(m_xMin, m_yMin, m_xMax, m_yMax);
35 if (oldRect != node->normalizedRect()) {
36 m_xMin = node->normalizedRect().x();
37 m_yMin = node->normalizedRect().y();
38 m_xMax = node->normalizedRect().width();
39 m_yMax = node->normalizedRect().height();
40 markDirty(changes: AbstractRenderer::FrameGraphDirty);
41 }
42
43 if (node->gamma() != m_gamma) {
44 m_gamma = node->gamma();
45 markDirty(changes: AbstractRenderer::FrameGraphDirty);
46 }
47}
48
49float ViewportNode::xMin() const
50{
51 return m_xMin;
52}
53
54void ViewportNode::setXMin(float xMin)
55{
56 m_xMin = xMin;
57}
58float ViewportNode::yMin() const
59{
60 return m_yMin;
61}
62
63void ViewportNode::setYMin(float yMin)
64{
65 m_yMin = yMin;
66}
67float ViewportNode::xMax() const
68{
69 return m_xMax;
70}
71
72void ViewportNode::setXMax(float xMax)
73{
74 m_xMax = xMax;
75}
76float ViewportNode::yMax() const
77{
78 return m_yMax;
79}
80
81void ViewportNode::setYMax(float yMax)
82{
83 m_yMax = yMax;
84}
85
86float ViewportNode::gamma() const
87{
88 return m_gamma;
89}
90
91void ViewportNode::setGamma(float gamma)
92{
93 m_gamma = gamma;
94}
95
96QRectF ViewportNode::computeViewport(const QRectF &childViewport, const ViewportNode *parentViewport)
97{
98 QRectF vp(parentViewport->xMin(),
99 parentViewport->yMin(),
100 parentViewport->xMax(),
101 parentViewport->yMax());
102
103 if (childViewport.isEmpty()) {
104 return vp;
105 } else {
106 return QRectF(vp.x() + vp.width() * childViewport.x(),
107 vp.y() + vp.height() * childViewport.y(),
108 vp.width() * childViewport.width(),
109 vp.height() * childViewport.height());
110 }
111}
112
113} // namespace Render
114} // namespace Qt3DRender
115
116QT_END_NAMESPACE
117

source code of qt3d/src/render/framegraph/viewportnode.cpp