mirror of
https://github.com/OPM/ResInsight.git
synced 2025-01-08 23:23:01 -06:00
132 lines
4.4 KiB
C++
132 lines
4.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2018- Equinor ASA
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//
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// ResInsight is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#include "RiuCvfOverlayItemWidget.h"
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#include "RiaApplication.h"
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#include "cafTitledOverlayFrame.h"
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#include "cafViewer.h"
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#include "cvfqtUtils.h"
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#include "cvfRenderSequence.h"
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#include "cvfFramebufferObject.h"
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#include "cvfRenderbufferObject.h"
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#include "cvfRendering.h"
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#include "cvfCamera.h"
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#include <QApplication>
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#include <QFrame>
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#include <QLabel>
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#include <QPixmap>
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#include <QPushButton>
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#include <QResizeEvent>
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#include <QBoxLayout>
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#include "glew/GL/glew.h"
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuCvfOverlayItemWidget::RiuCvfOverlayItemWidget(QWidget* parent/*=0*/, QWidget* widgetToSnapTo)
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: RiuDraggableOverlayFrame(parent, widgetToSnapTo)
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{
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this->layout()->setMargin(0);
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this->layout()->setSpacing(0);
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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RiuCvfOverlayItemWidget::~RiuCvfOverlayItemWidget()
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{
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}
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//--------------------------------------------------------------------------------------------------
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///
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//--------------------------------------------------------------------------------------------------
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void RiuCvfOverlayItemWidget::updateFromOverlayItem( caf::TitledOverlayFrame * item)
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{
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unsigned int width = item->renderSize().x();
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unsigned int height = item->renderSize().y();
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QGLFormat glFormat;
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glFormat.setDirectRendering(RiaApplication::instance()->useShaders());
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// Enforce no border to avoid
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item->setBackgroundFrameColor(cvf::Color4f(0, 0, 0, 0));
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caf::Viewer* viewer = new caf::Viewer(glFormat, nullptr);
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cvf::OpenGLContext* cvfOglContext = viewer->cvfOpenGLContext();
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viewer->resize(width, height);
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// Create a rendering
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cvf::ref<cvf::Rendering> rendering = new cvf::Rendering;
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item->setLayoutFixedPosition({0,0});
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rendering->addOverlayItem(item);
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rendering->camera()->setViewport(0,0,width, height);
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rendering->camera()->viewport()->setClearColor({1,1,1,0});
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cvf::ref<cvf::RenderSequence> renderingSequence = new cvf::RenderSequence;
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renderingSequence->addRendering(rendering.p());
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if (RiaApplication::instance()->useShaders())
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{
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// Set up frame and render buffers
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cvf::ref<cvf::FramebufferObject> fbo = new cvf::FramebufferObject;
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cvf::ref<cvf::RenderbufferObject> rboColor = new cvf::RenderbufferObject(cvf::RenderbufferObject::RGBA, width, height);
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cvf::ref<cvf::RenderbufferObject> rboDepth = new cvf::RenderbufferObject(cvf::RenderbufferObject::DEPTH_COMPONENT24, width, height);
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fbo->attachDepthRenderbuffer(rboDepth.p());
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fbo->attachColorRenderbuffer(0, rboColor.p());
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fbo->applyOpenGL(cvfOglContext);
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rendering->setTargetFramebuffer(fbo.p());
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fbo->bind(cvfOglContext);
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}
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renderingSequence->render(cvfOglContext);
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// Read data from framebuffer
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cvf::UByteArray arr(4*width*height);
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glReadPixels(0, 0, static_cast<GLsizei>(width), static_cast<GLsizei>(height), GL_RGBA, GL_UNSIGNED_BYTE, arr.ptr());
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// Create a cvf texture image
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cvf::ref<cvf::TextureImage> img = new cvf::TextureImage;
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img->setData(arr.ptr(), width, height);
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QImage image = cvfqt::Utils::toQImage(*img.p());
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//image.save("jjsLegendImageTest.png");
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QPixmap pixmap = QPixmap::fromImage(image);
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delete viewer;
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m_overlayItemLabel->setPixmap(pixmap);
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this->setMinimumSize(QSize(width, height));
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this->resize(QSize(width, height));
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}
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