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Merge pull request #1343 from maxGimeno/Polyhedron_demo-Snapshot_to_clipboard-GF 

Polyhedron_demo: Snapshot to clipboard
This commit is contained in:
Simon Giraudot 2016-08-17 08:06:53 +02:00 committed by GitHub
parent 061dd8ce08 141517fbc8
commit eeebf10c15
3 changed files with 85 additions and 58 deletions
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2
Polyhedron/demo/Polyhedron/MainWindow.ui
View File

@ -579,7 +579,7 @@
<string>Re&amp;center Scene</string>
</property>
<property name="shortcut">
<string>Ctrl+C</string>
<string>Ctrl+R</string>
</property>
</action>
<action name="actionSetBackgroundColor">

140
Polyhedron/demo/Polyhedron/Viewer.cpp
View File

@ -30,6 +30,8 @@ public:
mutable std::vector<QOpenGLShaderProgram*> shader_programs;
QMatrix4x4 projectionMatrix;
void setFrustum(double l, double r, double t, double b, double n, double f);
QImage* takeSnapshot(Viewer* viewer, int quality, int background_color, QSize size, double oversampling, bool expand);
void sendSnapshotToClibboard(Viewer*);
};
Viewer::Viewer(QWidget* parent, bool antialiasing)
: CGAL::Three::Viewer_interface(parent)
@ -402,7 +404,19 @@ void Viewer::keyPressEvent(QKeyEvent* e)
else if(e->key() == Qt::Key_I && e->modifiers() & Qt::ControlModifier){
d->scene->printPrimitiveIds(this);
update();
}
return;
}
else if(e->key() == Qt::Key_C && e->modifiers() & Qt::ControlModifier){
d->sendSnapshotToClibboard(this);
return;
}
else if(e->key() == Qt::Key_S && e->modifiers() & Qt::ControlModifier){
this->saveSnapshot(true,true);
return;
}
//forward the event to the scene (item handling of the event)
if (! d->scene->keyPressEvent(e) )
QGLViewer::keyPressEvent(e);
@ -1522,7 +1536,6 @@ private Q_SLOTS:
void Viewer::saveSnapshot(bool, bool)
{
GLfloat alpha = 1.0;
qreal aspectRatio = width() / static_cast<qreal>(height());
static ImageInterface* imageInterface = NULL;
@ -1531,83 +1544,86 @@ void Viewer::saveSnapshot(bool, bool)
imageInterface->imgWidth->setValue(width());
imageInterface->imgHeight->setValue(height());
imageInterface->imgQuality->setValue(snapshotQuality());
if (imageInterface->exec() == QDialog::Rejected)
return;
setSnapshotQuality(imageInterface->imgQuality->value());
QColor previousBGColor = backgroundColor();
switch(imageInterface->color_comboBox->currentIndex())
{
case 0:
break;
case 1:
this->setBackgroundColor(QColor(Qt::transparent));
alpha = 0.0;
break;
case 2:
QColor c = QColorDialog::getColor();
if(c.isValid()) {
setBackgroundColor(c);
this->setBackgroundColor(c);
}
else return;
break;
}
QSize finalSize(imageInterface->imgWidth->value(), imageInterface->imgHeight->value());
qreal oversampling = imageInterface->oversampling->value();
QSize subSize(int(this->width()/oversampling), int(this->height()/oversampling));
bool expand = imageInterface->expandFrustum->isChecked();
QString fileName = QFileDialog::getSaveFileName(this,
tr("Save Snapshot"), "", tr("Image Files (*.png *.jpg *.bmp)"));
if(fileName.isEmpty())
{
setBackgroundColor(previousBGColor);
return;
}
QImage* image= d->takeSnapshot(this, imageInterface->imgQuality->value(), imageInterface->color_comboBox->currentIndex(),
finalSize, imageInterface->oversampling->value(), expand);
if(image)
{
image->save(fileName);
delete image;
}
QSize size=QSize(width(), height());
}
//copy a snapshot with transparent background with arbitrary quality values.
QImage* Viewer_impl::takeSnapshot(Viewer *viewer, int quality, int background_color, QSize finalSize, double oversampling, bool expand)
{
qreal aspectRatio = viewer->width() / static_cast<qreal>(viewer->height());
viewer->setSnapshotQuality(quality);
GLfloat alpha = 1.0f;
QColor previousBGColor = viewer->backgroundColor();
switch(background_color)
{
case 0:
break;
case 1:
viewer->setBackgroundColor(QColor(Qt::transparent));
alpha = 0.0f;
break;
case 2:
QColor c = QColorDialog::getColor();
if(c.isValid()) {
viewer->setBackgroundColor(c);
}
else
return NULL;
break;
}
QSize subSize(int(viewer->width()/oversampling), int(viewer->height()/oversampling));
QSize size=QSize(viewer->width(), viewer->height());
qreal newAspectRatio = finalSize.width() / static_cast<qreal>(finalSize.height());
qreal zNear = camera()->zNear();
qreal zFar = camera()->zFar();
qreal zNear = viewer->camera()->zNear();
qreal zFar = viewer->camera()->zFar();
qreal xMin, yMin;
bool expand = imageInterface->expandFrustum->isChecked();
if ((expand && (newAspectRatio>aspectRatio)) || (!expand && (newAspectRatio<aspectRatio)))
{
yMin = zNear * tan(camera()->fieldOfView() / 2.0);
yMin = zNear * tan(viewer->camera()->fieldOfView() / 2.0);
xMin = newAspectRatio * yMin;
}
else
{
xMin = zNear * tan(camera()->fieldOfView() / 2.0) * aspectRatio;
xMin = zNear * tan(viewer->camera()->fieldOfView() / 2.0) * aspectRatio;
yMin = xMin / newAspectRatio;
}
QImage image(finalSize.width(), finalSize.height(), QImage::Format_ARGB32);
QImage *image = new QImage(finalSize.width(), finalSize.height(), QImage::Format_ARGB32);
if (image.isNull())
if (image->isNull())
{
QMessageBox::warning(this, "Image saving error",
QMessageBox::warning(viewer, "Image saving error",
"Unable to create resulting image",
QMessageBox::Ok, QMessageBox::NoButton);
setBackgroundColor(previousBGColor);
return;
viewer->setBackgroundColor(previousBGColor);
return NULL;
}
// ProgressDialog disabled since it interfers with the screen grabing mecanism on some platforms. Too bad.
// ProgressDialog::showProgressDialog(this);
image.fill(qRgba(0,0,0,0));
qreal scaleX = subSize.width() / static_cast<qreal>(finalSize.width());
qreal scaleY = subSize.height() / static_cast<qreal>(finalSize.height());
@ -1622,18 +1638,19 @@ void Viewer::saveSnapshot(bool, bool)
nbX++;
if (nbY * subSize.height() < finalSize.height())
nbY++;
QOpenGLFramebufferObject* fbo = new QOpenGLFramebufferObject(size, QOpenGLFramebufferObject::CombinedDepthStencil);
makeCurrent();
viewer->makeCurrent();
int count=0;
for (int i=0; i<nbX; i++)
for (int j=0; j<nbY; j++)
{
d->setFrustum(-xMin + i*deltaX, -xMin + (i+1)*deltaX, yMin - j*deltaY, yMin - (j+1)*deltaY, zNear, zFar);
setFrustum(-xMin + i*deltaX, -xMin + (i+1)*deltaX, yMin - j*deltaY, yMin - (j+1)*deltaY, zNear, zFar);
fbo->bind();
glClearColor(backgroundColor().redF(), backgroundColor().greenF(), backgroundColor().blueF(), alpha);
preDraw();
draw();
postDraw();
viewer->glClearColor(viewer->backgroundColor().redF(), viewer->backgroundColor().greenF(), viewer->backgroundColor().blueF(), alpha);
viewer->preDraw();
viewer->draw();
viewer->postDraw();
fbo->release();
QImage snapshot = fbo->toImage();
@ -1642,21 +1659,30 @@ void Viewer::saveSnapshot(bool, bool)
for (int ii=0; ii<subSize.width(); ii++)
{
int fi = i*subSize.width() + ii;
if (fi == image.width())
if (fi == image->width())
break;
for (int jj=0; jj<subSize.height(); jj++)
{
int fj = j*subSize.height() + jj;
if (fj == image.height())
if (fj == image->height())
break;
image.setPixel(fi, fj, subImage.pixel(ii,jj));
image->setPixel(fi, fj, subImage.pixel(ii,jj));
}
}
count++;
}
image.save(fileName);
setBackgroundColor(previousBGColor);
if(background_color !=0)
viewer->setBackgroundColor(previousBGColor);
return image;
}
void Viewer_impl::sendSnapshotToClibboard(Viewer *viewer)
{
QImage * snap = takeSnapshot(viewer, 95, 1, 2*viewer->size(), 1, true);
if(snap)
{
QApplication::clipboard()->setImage(*snap);
delete snap;
}
}
#include "Viewer.moc"

1
Polyhedron/demo/Polyhedron/Viewer.h
View File

@ -161,6 +161,7 @@ protected:
bool is_d_pressed;
protected:
friend class Viewer_impl;
Viewer_impl* d;
double prev_radius;