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/****************************************************************************
* MeshLab o o *
* An extendible mesh processor o o *
* _ O _ *
* Copyright(C) 2005, 2009 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* 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 2 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 (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#ifndef VCG_WRAP_QT_GLLABEL_H
#define VCG_WRAP_QT_GLLABEL_H
#include <QMessageBox>
#include <wrap/qt/col_qt_convert.h>
#include <wrap/qt/device_to_logical.h>
#include <wrap/qt/checkGLError.h>
#include <QPainter>
namespace vcg
{
/*
*/
class glLabel
{
public:
class Mode
{
public:
Mode()
{
init();
}
Mode(Color4b _color)
{
init();
color=_color;
}
void init()
{
color=vcg::Color4b(vcg::Color4b::White);
angle=0;
rightAlign = false;
qFont.setStyleStrategy(QFont::NoAntialias);
qFont.setFamily("Helvetica");
qFont.setPixelSize(12);
}
Mode(QFont &_qFont, vcg::Color4b _color, float _angle,bool _rightAlign)
{
qFont=_qFont;
color=_color;
angle=_angle;
rightAlign=_rightAlign;
}
float angle;
bool rightAlign;
vcg::Color4b color;
QFont qFont;
};
private:
static void enter2D(QPainter *painter)
{
glPushAttrib(GL_ENABLE_BIT|GL_VIEWPORT_BIT);
glDisable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
painter->endNativePainting();
painter->save();
}
static void exit2D(QPainter *painter)
{
//checkGLError::qDebug("glLabel");
painter->restore();
painter->beginNativePainting();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopAttrib();
}
public:
enum LabelPosition { TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT} ;
static void render2D(QPainter *painter, const LabelPosition pos, const QString &text, const Mode &m=Mode())
{
render2D(painter,pos,0,text,m);
}
static void render2D(QPainter *painter, const LabelPosition pos, int linePos, const QString &text, const Mode &m=Mode())
{
Mode lm = m;
if(pos == TOP_RIGHT || pos == BOTTOM_RIGHT)
lm.rightAlign=true;
GLint view[4];
glGetIntegerv(GL_VIEWPORT, view);
QFontMetrics qfm(m.qFont);
float delta = qfm.ascent()/2;
switch(pos)
{
case TOP_LEFT : render2D(painter,vcg::Point2f(delta, view[3]-3*delta - delta*3*linePos),text,lm); break;
case TOP_RIGHT : render2D(painter,vcg::Point2f(view[2]-delta, view[3]-3*delta - delta*3*linePos),text,lm); break;
case BOTTOM_LEFT : render2D(painter,vcg::Point2f(delta, 3*delta + delta*3*linePos),text,lm); break;
case BOTTOM_RIGHT : render2D(painter,vcg::Point2f(view[2]-delta, 3*delta + delta*3*linePos),text,lm); break;
}
}
/*
*/
static void render2D(QPainter *painter, const vcg::Point2f &p, const QString &text, const Mode &m)
{
GLint view[4];
glGetIntegerv(GL_VIEWPORT, view);
QFontMetrics qfm(m.qFont);
QRect textBox = qfm.boundingRect(text);
glLabel::enter2D(painter);
painter->setRenderHint(QPainter::TextAntialiasing);
painter->setPen(vcg::ColorConverter::ToQColor(m.color));
painter->setFont(m.qFont);
painter->translate(QPointF(p[0],view[3]-p[1]));
painter->rotate(m.angle);
QPoint base(0,qfm.ascent()/2);
if(m.rightAlign)
base.setX(-textBox.width() -qfm.maxWidth());
painter->drawText(base,text);
glLabel::exit2D(painter);
glViewport(view[0],view[1],view[2],view[3]);
}
static void render(QPainter *painter, const vcg::Point3f &p, const QString &text)
{
Mode m;
render(painter,p,text,m);
}
static void render(QPainter *painter, const vcg::Point3f &p, const QString &text, const Mode &m)
{
GLdouble model[16];
GLdouble proj[16];
GLint view[4];
glGetDoublev(GL_MODELVIEW_MATRIX, model);
glGetDoublev(GL_PROJECTION_MATRIX, proj);
glGetIntegerv(GL_VIEWPORT, view);
GLdouble winx,winy,winz;
gluProject(p[0],p[1],p[2],model,proj,view,&winx,&winy,&winz);
QFontMetrics qfm(m.qFont);
QRect textBox = qfm.boundingRect(text);
glLabel::enter2D(painter);
painter->setRenderHint(QPainter::TextAntialiasing);
painter->setPen(vcg::ColorConverter::ToQColor(m.color));
painter->setFont(m.qFont);
painter->translate(QPointF(QTDeviceToLogical(painter,winx),
QTDeviceToLogical(painter,view[3]-winy)));
painter->rotate(m.angle);
QPoint base(0,qfm.ascent()/2);
if(m.rightAlign)
base.setX(-textBox.width() -qfm.maxWidth());
painter->drawText(base,text);
glLabel::exit2D(painter);
}
static void render(QPainter *painter, const vcg::Point3d &p, const QString &text)
{ render(painter,Point3f::Construct(p),text); }
static void render(QPainter *painter, const vcg::Point3d &p, const QString &text, const Mode &m)
{ render(painter,Point3f::Construct(p),text,m); }
};
} // end namespace
#endif
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