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/*
textureextension.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2017 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "textureextension.h"
#include "qsgtexturegrabber.h"
#include <core/propertycontroller.h>
#include <core/util.h>
#include <core/remoteviewserver.h>
#include <common/remoteviewframe.h>
#include <QDebug>
#include <QImage>
#include <QQuickItem>
#include <QSGGeometryNode>
#include <QSGOpaqueTextureMaterial>
#include <QSGTexture>
#include <private/qquickitem_p.h>
#include <private/qsgdistancefieldglyphnode_p_p.h>
#include <private/qobject_p_p.h>
using namespace GammaRay;
TextureExtension::TextureExtension(PropertyController *controller)
: QObject(controller)
, PropertyControllerExtension(controller->objectBaseName() + ".texture")
, m_currentTexture(nullptr)
, m_currentMaterial(nullptr)
, m_remoteView(new RemoteViewServer(controller->objectBaseName() + ".texture.remoteView", controller))
, m_connected(false)
{
}
TextureExtension::~TextureExtension() = default;
static QSGGeometryNode *findGeometryNode(QSGNode *node)
{
while (node) {
if (node->type() == QSGNode::GeometryNodeType)
return static_cast<QSGGeometryNode *>(node);
if (node->childCount() == 0)
return nullptr;
if (node->childCount() > 1 && node->firstChild()->type() != QSGNode::GeometryNodeType)
return nullptr;
node = node->firstChild();
}
return nullptr;
}
bool TextureExtension::setQObject(QObject *obj)
{
m_currentTexture = nullptr;
m_currentMaterial = nullptr;
if (!obj || !ensureSetup())
return false;
if (auto qsgTexture = qobject_cast<QSGTexture *>(obj)) {
m_remoteView->resetView();
m_currentTexture = qsgTexture;
m_remoteView->sourceChanged();
return true;
}
if (auto item = qobject_cast<QQuickItem *>(obj)) {
if (item->metaObject() == &QQuickItem::staticMetaObject)
return false;
auto priv = QQuickItemPrivate::get(item);
if (!priv->itemNodeInstance)
return false;
auto geometryNode = findGeometryNode(priv->itemNodeInstance);
if (geometryNode)
return setObject(geometryNode, "QSGGeometryNode");
}
// now it gets really dirty: to find the associated QSGLayer for a QQuickShaderEffectSource
// we look at its incoming signal/slot connections, it's watching the layer that way...
if (obj->inherits("QQuickShaderEffectSource")) {
auto d = QObjectPrivate::get(obj);
QObjectPrivate::ConnectionData *cd = d->connections.loadRelaxed();
if (cd && cd->senders) {
auto *senders = cd->senders;
for (QObjectPrivate::Connection *s = senders; s; s = s->next) {
if (!s->sender)
continue;
if (s->sender->inherits("QSGLayer"))
return setQObject(s->sender);
}
}
}
return false;
}
bool TextureExtension::setObject(void *object, const QString &typeName)
{
m_currentTexture = nullptr;
m_currentMaterial = nullptr;
if (typeName == QLatin1String("QSGGeometryNode")) {
auto node = static_cast<QSGGeometryNode *>(object);
if (Util::isNullish(node->activeMaterial()))
return false;
auto material = node->activeMaterial();
if (auto mat = dynamic_cast<QSGOpaqueTextureMaterial *>(material))
return setQObject(mat->texture());
if (auto mat = dynamic_cast<QSGDistanceFieldTextMaterial *>(material)) {
if (!mat->texture())
return false;
m_remoteView->resetView();
m_currentMaterial = mat;
m_remoteView->sourceChanged();
return true;
}
}
return false;
}
void TextureExtension::textureGrabbed(QSGTexture *tex, const QImage &img)
{
if (tex != m_currentTexture || !m_remoteView->isActive())
return;
RemoteViewFrame f;
f.setImage(img);
if (m_currentTexture && m_currentTexture->isAtlasTexture()) {
QRect subRect(img.width() * m_currentTexture->normalizedTextureSubRect().x(),
img.height() * m_currentTexture->normalizedTextureSubRect().y(),
m_currentTexture->textureSize().width(), m_currentTexture->textureSize().height());
f.data = QVariant::fromValue(subRect);
}
m_remoteView->sendFrame(f);
}
void TextureExtension::textureGrabbedUntyped(void *data, const QImage &img)
{
if (m_currentMaterial != data || !m_remoteView->isActive())
return;
RemoteViewFrame f;
f.setImage(img);
m_remoteView->sendFrame(f);
}
void TextureExtension::triggerGrab()
{
if (m_currentTexture)
QSGTextureGrabber::instance()->requestGrab(m_currentTexture);
else if (m_currentMaterial) {
auto texture = m_currentMaterial->wrapperTexture()->nativeInterface<QNativeInterface::QSGOpenGLTexture>();
QSGTextureGrabber::instance()->requestGrab(texture->nativeTexture(), m_currentMaterial->texture()->size, m_currentMaterial);
}
}
bool GammaRay::TextureExtension::ensureSetup()
{
if (m_connected)
return true;
if (!QSGTextureGrabber::instance())
return false;
connect(QSGTextureGrabber::instance(), &QSGTextureGrabber::textureGrabbed,
this, &TextureExtension::textureGrabbed);
connect(QSGTextureGrabber::instance(), &QSGTextureGrabber::textureGrabbedUntyped,
this, &TextureExtension::textureGrabbedUntyped);
connect(m_remoteView, &RemoteViewServer::requestUpdate, this, &TextureExtension::triggerGrab);
return m_connected = true;
}
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