1 files changed, 87 insertions, 0 deletions
diff --git a/src/datavisualizationqml2/declarativebarsrenderer.cpp b/src/datavisualizationqml2/declarativebarsrenderer.cpp
new file mode 100644
index 00000000..3925e062
--- /dev/null
+++ b/src/datavisualizationqml2/declarativebarsrenderer.cpp
@@ -0,0 +1,87 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the QtDataVisualization module.
+**
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+**
+****************************************************************************/
+
+#include "declarativebarsrenderer_p.h"
+
+#include <QtQuick/QQuickWindow>
+#include <QtGui/QOpenGLFramebufferObject>
+
+QT_DATAVISUALIZATION_BEGIN_NAMESPACE
+
+DeclarativeBarsRenderer::DeclarativeBarsRenderer(QQuickWindow *window, Bars3DController *renderer)
+    : m_fbo(0),
+      m_texture(0),
+      m_window(window),
+      m_barsRenderer(renderer)
+{
+    connect(m_window, &QQuickWindow::beforeSynchronizing, this,
+            &DeclarativeBarsRenderer::synchDataToRenderer, Qt::DirectConnection);
+    connect(m_window, &QQuickWindow::beforeRendering, this,
+            &DeclarativeBarsRenderer::renderFBO, Qt::DirectConnection);
+    connect(m_barsRenderer, &Abstract3DController::needRender, m_window,
+            &QQuickWindow::update);
+}
+
+DeclarativeBarsRenderer::~DeclarativeBarsRenderer()
+{
+    delete m_texture;
+    delete m_fbo;
+}
+
+void DeclarativeBarsRenderer::synchDataToRenderer()
+{
+    m_barsRenderer->initializeOpenGL();
+    m_barsRenderer->synchDataToRenderer();
+}
+
+void DeclarativeBarsRenderer::renderFBO()
+{
+    QSize size = rect().size().toSize();
+
+    // Create FBO
+    if (!m_fbo) {
+        QOpenGLFramebufferObjectFormat format;
+        format.setAttachment(QOpenGLFramebufferObject::Depth);
+        m_fbo = new QOpenGLFramebufferObject(size, format);
+        m_texture = m_window->createTextureFromId(m_fbo->texture(), size);
+
+        setTexture(m_texture);
+
+        // Flip texture
+        // TODO: Can be gotten rid of once support for texture flipping becomes available (in Qt5.2)
+        QSize ts = m_texture->textureSize();
+        QRectF sourceRect(0, 0, ts.width(), ts.height());
+        float tmp = sourceRect.top();
+        sourceRect.setTop(sourceRect.bottom());
+        sourceRect.setBottom(tmp);
+        QSGGeometry *geometry = this->geometry();
+        QSGGeometry::updateTexturedRectGeometry(geometry, rect(),
+                                                m_texture->convertToNormalizedSourceRect(sourceRect));
+        markDirty(DirtyMaterial);
+        //qDebug() << "create node" << m_fbo->handle() << m_texture->textureId() << m_fbo->size();
+    }
+
+    // Call the shared rendering function
+    m_fbo->bind();
+
+    m_barsRenderer->render(m_fbo->handle());
+
+    m_fbo->release();
+}
+
+QT_DATAVISUALIZATION_END_NAMESPACE