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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2007 \/)\/ *
* 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 QT_TRACKBALL_H
#define QT_TRACKBALL_H
#include <wrap/qt/device_to_logical.h>
/// Transforms the event coordintates (that are device independent)
/// into the expected framebuffer coordinates (e.g.in opengl pixels)
/// This is necessary because trackball works in the viewport coord systems.
inline float QT2VCG_X( QWidget *qw, QMouseEvent *e)
{
return QTLogicalToDevice(qw,e->x());
}
/// Transforms the event coordintates (that are device independent)
/// into the expected framebuffer coordinates (e.g.in opengl pixels)
/// This is necessary because trackball works in the viewport coord systems.
inline float QT2VCG_Y( QWidget *qw, QMouseEvent *e)
{
return QTLogicalToDevice(qw,qw->height () - e->y ());
}
/// Takes a QT MouseButton, some QT KeyboardModifiers and returns the equivalent Trackball::Button
inline vcg::Trackball::Button QT2VCG (Qt::MouseButton qtbt, Qt::KeyboardModifiers modifiers)
{
int vcgbt = vcg::Trackball::BUTTON_NONE;
if (qtbt & Qt::LeftButton) vcgbt |= vcg::Trackball::BUTTON_LEFT;
if (qtbt & Qt::RightButton) vcgbt |= vcg::Trackball::BUTTON_RIGHT;
if (qtbt & Qt::MidButton) vcgbt |= vcg::Trackball::BUTTON_MIDDLE;
if (modifiers & Qt::ShiftModifier) vcgbt |= vcg::Trackball::KEY_SHIFT;
if (modifiers & Qt::ControlModifier) vcgbt |= vcg::Trackball::KEY_CTRL;
if (modifiers & Qt::AltModifier) vcgbt |= vcg::Trackball::KEY_ALT;
return vcg::Trackball::Button (vcgbt);
}
/// Takes a QT ket and QT KeyboardModifiers and returns the mouse wheel related Trackball::Button
inline vcg::Trackball::Button QTWheel2VCG (Qt::KeyboardModifiers modifiers)
{
int vcgbt = vcg::Trackball::WHEEL;
if (modifiers & Qt::ShiftModifier) vcgbt |= vcg::Trackball::KEY_SHIFT;
if (modifiers & Qt::ControlModifier) vcgbt |= vcg::Trackball::KEY_CTRL;
if (modifiers & Qt::AltModifier) vcgbt |= vcg::Trackball::KEY_ALT;
return vcg::Trackball::Button (vcgbt);
}
/// Takes some QT KeyboardModifiers and returns the mouse wheel related Trackball::Button
inline vcg::Trackball::Button QTKey2VCG (int key, Qt::KeyboardModifiers modifiers)
{
int vcgbt = 0;
switch (key) {
case Qt::Key_W :
case Qt::Key_Up : vcgbt = vcg::Trackball::KEY_UP ; break;
case Qt::Key_A :
case Qt::Key_Left : vcgbt = vcg::Trackball::KEY_LEFT ; break;
case Qt::Key_S :
case Qt::Key_Down : vcgbt = vcg::Trackball::KEY_DOWN ; break;
case Qt::Key_D :
case Qt::Key_Right: vcgbt = vcg::Trackball::KEY_RIGHT; break;
case Qt::Key_R :
case Qt::Key_PageUp: vcgbt = vcg::Trackball::KEY_PGUP ; break;
case Qt::Key_F :
case Qt::Key_PageDown: vcgbt = vcg::Trackball::KEY_PGDOWN; break;
default : vcgbt = 0;
}
if (modifiers & Qt::ShiftModifier) vcgbt |= vcg::Trackball::KEY_SHIFT;
if (modifiers & Qt::ControlModifier) vcgbt |= vcg::Trackball::KEY_CTRL;
if (modifiers & Qt::AltModifier) vcgbt |= vcg::Trackball::KEY_ALT;
return vcg::Trackball::Button (vcgbt);
}
#endif // QT_TRACKBALL_H
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