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Added a simple wrapper for writing with QT painter simple labels in 3D (even right aligned or rotated)

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Paolo Cignoni 2010-09-30 23:32:26 +00:00
parent 92bbd33394
commit 45a6c74329
1 changed files with 105 additions and 0 deletions
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wrap/qt/gl_label.h Executable file
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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>
namespace vcg
{
class glLabel
{
public:
static void render(QPainter *painter, const vcg::Point3f &p, const QString &text)
{
QFont qFont;
qFont.setStyleStrategy(QFont::NoAntialias);
qFont.setFamily("Helvetica");
qFont.setPixelSize(12);
vcg::Color4b color(vcg::Color4b::White);
render(painter,p,text,qFont,color);
}
static void render(QPainter *painter, const vcg::Point3f &p, const QString &text, QFont qFont, vcg::Color4b color, float angle =0,bool rightAlign=false)
{
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);
glPushAttrib(GL_ENABLE_BIT);
glDisable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
QFontMetrics qfm(qFont);
QRect textBox = qfm.boundingRect(text);
painter->endNativePainting();
painter->save();
painter->setRenderHint(QPainter::TextAntialiasing);
painter->setPen(vcg::ColorConverter::ToQColor(color));
painter->setFont(qFont);
//qDebug("Printing at %f %f (%f %f %f) '%s'",winx,winy,p[0],p[1],p[2],qPrintable(text));
painter->translate(QPointF(winx,view[3]-winy));
painter->rotate(angle);
//painter->drawText(QPointF(0,0),text);
//painter->drawText(QRect(),Qt::AlignLeft+Qt::AlignVCenter,text);
//painter->drawText(QRect(view[0],view[1],view[2],view[3]),Qt::AlignLeft+Qt::AlignVCenter,text);
//QPoint base(0,textBox.height()/2);
QPoint base(0,qfm.ascent()/2);
if(rightAlign)
base.setX(-textBox.width() -qfm.maxWidth());
painter->drawText(base,text);
//painter->drawText(QPointF(winx,view[3]-winy),text);
painter->restore();
painter->beginNativePainting();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
glPopAttrib();
checkGLError::qDebug("myRenderText");
}
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, QFont qFont, vcg::Color4b color)
{ render(painter,Point3f::Construct(p),text,qFont,color); }
};
} // end namespace
#endif