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/*LICENSE_START*/
/*
* Copyright 1995-2002 Washington University School of Medicine
*
* http://brainmap.wustl.edu
*
* This file is part of CARET.
*
* CARET is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* CARET is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CARET; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*LICENSE_END*/
#include <QGlobalStatic>
#include <QImage>
#include <QPixmap>
#include "BrainModelOpenGL.h"
#include "BrainSet.h"
#include "OffScreenOpenGLWidget.h"
#include "PreferencesFile.h"
/**
* constructor.
*/
OffScreenOpenGLWidget::OffScreenOpenGLWidget(QWidget* parent,
Qt::WFlags f)
: QGLWidget(parent, NULL, f)
{
openGL = new BrainModelOpenGL;
}
/**
* destructor.
*/
OffScreenOpenGLWidget::~OffScreenOpenGLWidget()
{
delete openGL;
openGL = NULL;
}
/**
* draw to an image (returns true if successful).
*/
void
OffScreenOpenGLWidget::drawToImage(BrainSet* bs,
BrainModel* bm,
QImage& imageOut)
{
resizeGL(width(), height());
brainSet = bs;
brainModel = bm;
imageOut = QImage(); // ".reset()" should not be used
PreferencesFile* pf = brainSet->getPreferencesFile();
brainSet->setDisplaySplashImage(false);
double orthoLeft, orthoRight, orthoBottom, orthoTop,
orthoNear, orthoFar;
openGL->getOrthographicBox(0, orthoLeft, orthoRight, orthoBottom, orthoTop,
orthoNear, orthoFar);
brainSet->setDefaultScaling(orthoRight, orthoTop);
//
// Display lists do not work during screen capture - do not know why.
//
brainSet->clearAllDisplayLists();
pf->setDisplayListsEnabled(false);
updateGL();
updateGL();
PreferencesFile::IMAGE_CAPTURE_TYPE captureType = pf->getImageCaptureType();
#ifdef Q_OS_LINUX
//
// Only PIXMAP works on LINUX
//
captureType = PreferencesFile::IMAGE_CAPTURE_PIXMAP;
#endif // Q_OS_LINUX
switch(captureType) {
case PreferencesFile::IMAGE_CAPTURE_PIXMAP:
{
imageOut = renderPixmap().toImage();
}
break;
case PreferencesFile::IMAGE_CAPTURE_OPENGL_BUFFER:
{
updateGL();
imageOut = grabFrameBuffer();
}
break;
}
}
/**
* initialize.
*/
void
OffScreenOpenGLWidget::initializeGL()
{
openGL->initializeOpenGL(true);
}
/**
* handle resize event.
*/
void
OffScreenOpenGLWidget::resizeGL(int widthIn, int heightIn)
{
windowWidth = widthIn;
windowHeight = heightIn;
if (windowWidth <= 0) {
windowWidth = width();
}
if (windowHeight <= 0) {
windowHeight = height();
}
openGL->updateOrthoSize(0, windowWidth, windowHeight);
}
/**
* draw the scene.
*/
void
OffScreenOpenGLWidget::paintGL()
{
int viewport[4] = { 0, 0, windowWidth, windowHeight };
openGL->drawBrainModelWebCaret(brainSet,
brainModel,
0,
viewport);
}
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