1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
// Copyright (C) 2016 Jolla Ltd, author: <gunnar.sletta@jollamobile.com>
// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qgfxsourceproxy_p.h"
#include <private/qquickshadereffectsource_p.h>
#include <private/qquickitem_p.h>
#include <private/qquickimage_p.h>
QT_BEGIN_NAMESPACE
QGfxSourceProxy::QGfxSourceProxy(QQuickItem *parentItem)
: QQuickItem(parentItem)
{
}
QGfxSourceProxy::~QGfxSourceProxy()
{
delete m_proxy;
}
void QGfxSourceProxy::setInput(QQuickItem *input)
{
if (m_input == input)
return;
if (m_input)
disconnect(m_input, nullptr, this, nullptr);
m_input = input;
polish();
if (m_input) {
if (QQuickImage *image = qobject_cast<QQuickImage *>(m_input)) {
connect(image, &QQuickImage::sourceSizeChanged, this, &QGfxSourceProxy::repolish);
connect(image, &QQuickImage::fillModeChanged, this, &QGfxSourceProxy::repolish);
}
connect(m_input, &QQuickItem::childrenChanged, this, &QGfxSourceProxy::repolish);
}
Q_EMIT inputChanged();
}
void QGfxSourceProxy::setOutput(QQuickItem *output)
{
if (m_output == output)
return;
m_output = output;
Q_EMIT activeChanged();
Q_EMIT outputChanged();
}
void QGfxSourceProxy::setSourceRect(const QRectF &sourceRect)
{
if (m_sourceRect == sourceRect)
return;
m_sourceRect = sourceRect;
polish();
Q_EMIT sourceRectChanged();
}
void QGfxSourceProxy::setInterpolation(Interpolation i)
{
if (m_interpolation == i)
return;
m_interpolation = i;
polish();
Q_EMIT interpolationChanged();
}
void QGfxSourceProxy::useProxy()
{
if (!m_proxy)
m_proxy = new QQuickShaderEffectSource(this);
m_proxy->setSourceRect(m_sourceRect);
m_proxy->setSourceItem(m_input);
m_proxy->setSmooth(m_interpolation != Interpolation::Nearest);
setOutput(m_proxy);
}
void QGfxSourceProxy::repolish()
{
polish();
}
QObject *QGfxSourceProxy::findLayer(QQuickItem *item)
{
if (!item)
return nullptr;
QQuickItemPrivate *d = QQuickItemPrivate::get(item);
if (d->extra.isAllocated() && d->extra->layer) {
QObject *layer = qvariant_cast<QObject *>(item->property("layer"));
if (layer && layer->property("enabled").toBool())
return layer;
}
return nullptr;
}
void QGfxSourceProxy::updatePolish()
{
if (!m_input) {
setOutput(nullptr);
return;
}
QQuickImage *image = qobject_cast<QQuickImage *>(m_input);
QQuickShaderEffectSource *shaderSource = qobject_cast<QQuickShaderEffectSource *>(m_input);
bool childless = m_input->childItems().size() == 0;
bool interpOk = m_interpolation == Interpolation::Any
|| (m_interpolation == Interpolation::Linear && m_input->smooth() == true)
|| (m_interpolation == Interpolation::Nearest && m_input->smooth() == false);
// Layers can be used in two different ways. Option 1 is when the item is
// used as input to a separate ShaderEffect component. In this case,
// m_input will be the item itself.
QObject *layer = findLayer(m_input);
if (!layer && shaderSource) {
// Alternatively, the effect is applied via layer.effect, and the
// input to the effect will be the layer's internal ShaderEffectSource
// item. In this case, we need to backtrack and find the item that has
// the layer and configure it accordingly.
layer = findLayer(shaderSource->sourceItem());
}
// A bit crude test, but we're only using source rect for
// blurring+transparent edge, so this is good enough.
bool padded = m_sourceRect.x() < 0 || m_sourceRect.y() < 0;
bool direct = false;
if (layer) {
// Auto-configure the layer so interpolation and padding works as
// expected without allocating additional FBOs. In edgecases, where
// this feature is undesiered, the user can simply use
// ShaderEffectSource rather than layer.
layer->setProperty("sourceRect", m_sourceRect);
layer->setProperty("smooth", m_interpolation != Interpolation::Nearest);
direct = true;
} else if (childless && interpOk) {
if (shaderSource) {
if (shaderSource->sourceRect() == m_sourceRect || m_sourceRect.isEmpty())
direct = true;
} else if (!padded && ((image && image->fillMode() == QQuickImage::Stretch && !image->sourceSize().isNull())
|| (!image && m_input->isTextureProvider())
)
) {
direct = true;
}
}
if (direct)
setOutput(m_input);
else
useProxy();
// Remove the proxy if it is not in use..
if (m_proxy && m_output == m_input) {
delete m_proxy;
m_proxy = nullptr;
}
}
QT_END_NAMESPACE
#include "moc_qgfxsourceproxy_p.cpp"
|
