(C++) QtGaborFilterWidget
January 25, 2018 · View on GitHub
(C++) QtGaborFilterWidget
QtGaborFilterWidget is a Qt class to display a GaborFilterWidget.
Technical facts
./CppQtGaborFilterWidget/CppQtGaborFilterWidget.pri
INCLUDEPATH += \ ../../Classes/CppQtGaborFilterWidget SOURCES += \ ../../Classes/CppQtGaborFilterWidget/qtgaborfilterwidget.cpp HEADERS += \ ../../Classes/CppQtGaborFilterWidget/qtgaborfilterwidget.h OTHER_FILES += \ ../../Classes/CppQtGaborFilterWidget/Licence.txt
./CppQtGaborFilterWidget/qtgaborfilterwidget.h
//--------------------------------------------------------------------------- /* QtGaborFilterWidget, Qt widget for displaying the GaborFilter class Copyright 2011-2015 Richel Bilderbeek This program 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 3 of the License, or (at your option) any later version. This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppQtGaborFilterWidget.htm //--------------------------------------------------------------------------- #ifndef QTGABORFILTERWIDGET_H #define QTGABORFILTERWIDGET_H #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #pragma GCC diagnostic ignored "-Wunused-local-typedefs" #include <boost/scoped_ptr.hpp> #include <QWidget> #include "gaborfilter.h" //Needed by MOC #include "gaborfilterwidget.h" //Needed by MOC #pragma GCC diagnostic pop namespace ribi { class QtGaborFilterWidget : public QWidget { Q_OBJECT public: explicit QtGaborFilterWidget( QWidget *parent = 0, const double intensity = 0.0, const unsigned char red = 255, const unsigned char green = 0, const unsigned char blue = 0); const GaborFilterWidget * GetWidget() const { return m_widget.get(); } GaborFilterWidget * GetWidget() { return m_widget.get(); } ///Draw a GaborFilter from a GaborFilter static void DrawGaborFilter( QPainter& painter, const int left, const int top, const int width, const int height, const GaborFilter * const gabor_filter); ///Draw a GaborFilter from a GaborFilterWidget static void DrawGaborFilter( QPainter& painter, const GaborFilterWidget * const widget); protected: void paintEvent(QPaintEvent *); void resizeEvent(QResizeEvent *); private: boost::scoped_ptr<GaborFilterWidget> m_widget; ///OnResize is called when the geometry of the GaborFilterWidget is changed void OnResize(); public: static std::string GetVersion() noexcept; static std::vector<std::string> GetVersionHistory() noexcept; }; } //~namespace ribi #endif // QTGABORFILTERWIDGET_H
./CppQtGaborFilterWidget/qtgaborfilterwidget.cpp
//--------------------------------------------------------------------------- /* QtGaborFilterWidget, Qt widget for displaying the GaborFilter class Copyright 2011-2015 Richel Bilderbeek This program 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 3 of the License, or (at your option) any later version. This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ //--------------------------------------------------------------------------- //From http://www.richelbilderbeek.nl/CppQtGaborFilterWidget.htm //--------------------------------------------------------------------------- #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #pragma GCC diagnostic ignored "-Wunused-local-typedefs" #include "qtgaborfilterwidget.h" #include <cassert> #include <iostream> #include <boost/math/constants/constants.hpp> #include <boost/numeric/conversion/cast.hpp> #include <QPainter> #include "gaborfilter.h" //#include "trace.h" #pragma GCC diagnostic pop ribi::QtGaborFilterWidget::QtGaborFilterWidget( QWidget *parent, const double intensity, const unsigned char red, const unsigned char green, const unsigned char blue) : QWidget(parent), m_widget(new GaborFilterWidget(intensity,red,green,blue)) { assert(m_widget); m_widget->GetGaborFilter()->m_signal_changed.connect( boost::bind( &ribi::QtGaborFilterWidget::repaint, this)); m_widget->m_signal_geometry_changed.connect( boost::bind( &ribi::QtGaborFilterWidget::OnResize, this)); const double pi = boost::math::constants::pi<double>(); this->GetWidget()->GetGaborFilter()->SetAngle(pi * 2.0 / 16.0); this->GetWidget()->GetGaborFilter()->SetFrequency(16.0); this->GetWidget()->GetGaborFilter()->SetSigma(this->GetWidget()->GetGaborFilter()->SuggestSigma( 2.0,2.0)); } void ribi::QtGaborFilterWidget::DrawGaborFilter( QPainter& painter, const int left, const int top, const int width, const int height, const GaborFilter * const gaborfilter) { QImage image(width,height,QImage::Format::Format_RGB32); const double midx = static_cast<double>(left + width ) / 2.0; const double midy = static_cast<double>(top + height) / 2.0; const double max = gaborfilter->GetMax(); for (int y=0; y!=height; ++y) { for (int x=0; x!=width; ++x) { ///Transform the pixels coordinat system to [-1,1] for both x and y const double xco = (static_cast<double>(x) - midx)/midx; const double yco = (static_cast<double>(y) - midy)/midy; const double greyness = gaborfilter->GaborFunction(xco,yco); const int grey_int = 128.0 + ((greyness / max) * 126.0); const int grey_in_range = (grey_int < 0 ? 0 : (grey_int > 255 ? 255 : grey_int)); const unsigned char grey = static_cast<unsigned char>(grey_in_range); image.setPixel(QPoint(x,y),qRgb(grey,grey,grey)); } } painter.drawPixmap(left,top,width,height,QPixmap::fromImage(image)); } void ribi::QtGaborFilterWidget::DrawGaborFilter( QPainter& painter, const GaborFilterWidget * const widget) { DrawGaborFilter( painter, widget->GetLeft(), widget->GetTop(), widget->GetWidth(), widget->GetHeight(), widget->GetGaborFilter()); } std::string ribi::QtGaborFilterWidget::GetVersion() noexcept { return "1.1"; } std::vector<std::string> ribi::QtGaborFilterWidget::GetVersionHistory() noexcept { return { "2012-07-07: Version 1.0: initial version", "2014-03-28: Version 1.1: replaced custom Rect class by Boost.Geometry" }; } ///OnResize is calgaborfilter when the geometry of the GaborFilterWidget is changed void ribi::QtGaborFilterWidget::OnResize() { this->setGeometry( this->GetWidget()->GetLeft(), this->GetWidget()->GetTop(), this->GetWidget()->GetWidth(), this->GetWidget()->GetHeight() ); this->repaint(); } void ribi::QtGaborFilterWidget::paintEvent(QPaintEvent *) { QPainter p(this); DrawGaborFilter(p,m_widget.get()); } void ribi::QtGaborFilterWidget::resizeEvent(QResizeEvent *) { QRect r = this->geometry(); this->GetWidget()->SetGeometry(r.x(),r.y(),r.width(),r.height()); }