add easy color modification interface

include/Utils/Qt/qtcolorschooser.h

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
+*                                                                              *
+* This library is free software; you can redistribute it and/or modify it      *
+* under the terms of the GNU Lesser General Public License as published by the *
+* Free Software Foundation; either version 2.1 of the License, or (at your     *
+* option) any later version.                                                   *
+*                                                                              *
+* This library 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 Lesser General Public License  *
+* for more details.                                                            *
+*                                                                              *
+* You should have received a copy of the GNU Lesser General Public License     *
+* along with this library; if not, write to the Free Software Foundation,      *
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
+*                                                                              *
+* Web site: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#ifndef __QT_COLORS_CHOOSER_
+#define __QT_COLORS_CHOOSER_
+
+
+#include "Utils/Qt/qtSimple.h"
+
+#include <QColorDialog>
+#include <QListWidget>
+#include "Utils/Qt/qtpopup.h"
+
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+namespace QT
+{
+
+//forward definition
+class SimpleQT;
+
+/**
+ * Class that allow to interactively & easily modify application color:
+ *  Example of use
+ * 	cc = new Utils::QT::ColorsChooser(&sqt)
+ * 	cc->addColor(backgroundColor);
+ *  cc->addColor(lineColor);
+ *  cc->show();
+ *  Colors are automatically updated and
+ *
+ *  Closing the window make a hide() (no destruction)
+ *  To destroy: call delete in exit_cb
+ */
+class ColorsChooser: public QtPopUp
+{
+	Q_OBJECT
+protected:
+	std::vector<Geom::Vec3f*> m_colors;
+	std::vector<std::string> m_names;
+	int m_current;
+	QListWidget *m_list;
+	QColorDialog* m_diag;
+	SimpleQT *m_interf;
+
+	/**
+	 *  Update callback, on color has changed (optional)
+	 *  overload with what you want (glClearColor, setColor of shader ...)
+	 *  Called only if interface ptr has been given
+	 *  Do not forget to cast interf in the type of your interface !!
+	 */
+	virtual void updateCallBack(SimpleQT *interf) {}
+
+public:
+	/**
+	 * constructor
+	 * @param interf a ptr to the SimpltQT interf (if given the updateCallback and updateGL() are called
+	 */
+	ColorsChooser(SimpleQT *interf=NULL);
+
+	/**
+	 * add a color ptr the color chooser
+	 * @param ptr the ptr to the color
+	 * @param name display name in interface
+	 */
+	unsigned int addColor(Geom::Vec3f* ptr, const std::string& name);
+
+protected slots:
+	void select_color(int x);
+	void change_color(const QColor& col);
+};
+
+}
+}
+}
+
+#endif

src/Utils/Qt/qtcolorschooser.cpp

+/*******************************************************************************
+* CGoGN: Combinatorial and Geometric modeling with Generic N-dimensional Maps  *
+* version 0.1                                                                  *
+* Copyright (C) 2009-2012, IGG Team, LSIIT, University of Strasbourg           *
+*                                                                              *
+* This library is free software; you can redistribute it and/or modify it      *
+* under the terms of the GNU Lesser General Public License as published by the *
+* Free Software Foundation; either version 2.1 of the License, or (at your     *
+* option) any later version.                                                   *
+*                                                                              *
+* This library 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 Lesser General Public License  *
+* for more details.                                                            *
+*                                                                              *
+* You should have received a copy of the GNU Lesser General Public License     *
+* along with this library; if not, write to the Free Software Foundation,      *
+* Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.           *
+*                                                                              *
+* Web site: http://cgogn.unistra.fr/                                           *
+* Contact information: cgogn@unistra.fr                                        *
+*                                                                              *
+*******************************************************************************/
+
+#include "Utils/Qt/qtcolorschooser.h"
+#include "Utils/Qt/qtSimple.h"
+
+namespace CGoGN
+{
+
+namespace Utils
+{
+
+namespace QT
+{
+
+
+ColorsChooser::ColorsChooser(SimpleQT *interf):
+m_interf(interf)
+{
+	m_list = new QListWidget();
+	m_diag = new QColorDialog();
+	m_diag->setOption(QColorDialog::NoButtons);
+	addWidget(m_list,0,0);
+	addWidget(m_diag,0,1);
+	connect(m_list,  SIGNAL(currentRowChanged(int)), this, SLOT(select_color(int)));
+	connect(m_diag, SIGNAL(	currentColorChanged(const QColor&)), this, SLOT(change_color(const QColor&)));
+
+}
+
+unsigned int ColorsChooser::addColor(Geom::Vec3f* ptr, const std::string& name)
+{
+	m_colors.push_back(ptr);
+	m_list->addItem(QString(name.c_str()));
+	return m_colors.size()-1;
+}
+
+
+void ColorsChooser::select_color(int x)
+{
+	m_current = x;
+	const Geom::Vec3f& col = *m_colors[x];
+	m_diag->show();
+	m_diag->setCurrentColor(QColor(int(255.0f*col[0]), int(255.0f*col[1]), int(255.0f*col[2])) );
+}
+
+void ColorsChooser::change_color(const QColor& col)
+{
+	Geom::Vec3f& out = *m_colors[m_current];
+	out[0] = float(col.redF());
+	out[1] = float(col.greenF());
+	out[2] = float(col.blueF());
+
+
+	if (m_interf)
+	{
+		updateCallBack(m_interf);
+		m_interf->updateGL();
+	}
+}
+
+}
+}
+}