diff options
Diffstat (limited to 'src/quick/items/context2d/qquickcanvasitemnode.cpp')
-rw-r--r-- | src/quick/items/context2d/qquickcanvasitemnode.cpp | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/src/quick/items/context2d/qquickcanvasitemnode.cpp b/src/quick/items/context2d/qquickcanvasitemnode.cpp new file mode 100644 index 0000000000..307d5716e6 --- /dev/null +++ b/src/quick/items/context2d/qquickcanvasitemnode.cpp @@ -0,0 +1,125 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qquickcanvasitemnode_p.h" + +#include <QtQuick/private/qsgcontext_p.h> +#include <QtCore/qmath.h> + +QT_BEGIN_NAMESPACE + + +QQuickCanvasItemNode::QQuickCanvasItemNode() + : QSGGeometryNode() + , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) + , m_texture(0) + , m_size(1, 1) + , m_dirtyGeometry(false) + , m_dirtyTexture(false) +{ + setMaterial(&m_materialO); + setOpaqueMaterial(&m_material); + setGeometry(&m_geometry); +} + +QQuickCanvasItemNode::~QQuickCanvasItemNode() +{ + delete m_texture; +} + +// Must be called before this node is added to SG +void QQuickCanvasItemNode::setCallback(QQuickCanvasItemNode::Callback *cb) +{ + m_cb = cb; + setFlag(UsePreprocess, true); +} + +void QQuickCanvasItemNode::setSize(const QSizeF& size) +{ + if (m_size != size) { + m_dirtyGeometry = true; + m_size = size; + } +} + +void QQuickCanvasItemNode::preprocess() +{ + if (m_cb) + m_cb->process(); +} + +void QQuickCanvasItemNode::setTexture(QSGDynamicTexture* texture) +{ + if (texture != m_texture) { + m_dirtyTexture = true; + m_texture = texture; + } +} + +void QQuickCanvasItemNode::update() +{ + if (m_dirtyGeometry) + updateGeometry(); + if (m_dirtyTexture) + updateTexture(); + + m_dirtyGeometry = false; + m_dirtyTexture = false; +} + +void QQuickCanvasItemNode::updateTexture() +{ + m_material.setTexture(m_texture); + m_materialO.setTexture(m_texture); + markDirty(DirtyMaterial); +} + +void QQuickCanvasItemNode::updateGeometry() +{ + QRectF source = m_texture->normalizedTextureSubRect(); + QSGGeometry::updateTexturedRectGeometry(&m_geometry, + QRectF(0, 0, m_size.width(), m_size.height()), + source); + markDirty(DirtyGeometry); +} + +QT_END_NAMESPACE + |