Diffstat (limited to 'core/settings/light-and-power/calibration.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | core/settings/light-and-power/calibration.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/core/settings/light-and-power/calibration.cpp b/core/settings/light-and-power/calibration.cpp new file mode 100644 index 0000000..307de1f --- a/dev/null +++ b/core/settings/light-and-power/calibration.cpp @@ -0,0 +1,278 @@ +/* + This file is part of the OPIE Project + =. Copyright (c) 2002 Maximilian Reiss <harlekin@handhelds.org> + .=l. Copyright (c) 2002 Robert Griebl <sandman@handhelds.org> + .>+-= + _;:, .> :=|. This file is free software; you can +.> <`_, > . <= redistribute it and/or modify it under +:`=1 )Y*s>-.-- : the terms of the GNU General Public +.="- .-=="i, .._ License as published by the Free Software + - . .-<_> .<> Foundation; either version 2 of the License, + ._= =} : or (at your option) any later version. + .%`+i> _;_. + .i_,=:_. -<s. This file 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 file; + -_. . . )=. = see the file COPYING. If not, write to the + -- :-=` Free Software Foundation, Inc., + 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + +*/ +#include "calibration.h" + +#include <qpainter.h> +#include <qpalette.h> + +#define BRD 2 + +Calibration::Calibration ( QWidget *parent, const char *name, WFlags fl ) + : QWidget ( parent, name, fl ) +{ + m_scale = QSize ( 256, 256 ); + m_steps = 5; + m_dragged = -1; + m_interval = 5; + + m_p [0] = QPoint ( 0, 0 ); + m_p [1] = QPoint ( 255, 255 ); +} + +Calibration::~Calibration ( ) +{ +} + +void Calibration::setScale ( const QSize &s ) +{ + if ( s. width ( ) < 1 || s. height ( ) < 1 ) + return; + + m_scale = s; + checkPoints ( ); + + update ( ); +} + +QSize Calibration::scale ( ) const +{ + return m_scale; +} + +void Calibration::setLineSteps ( int steps ) +{ + if ( m_steps < 2 ) + return; + + m_steps = steps; + update ( ); +} + +int Calibration::lineSteps ( ) const +{ + return m_steps; +} + +void Calibration::setInterval ( int iv ) +{ + if ( iv < 1 ) + return; + + m_interval = iv; +// update ( ); +} + +int Calibration::interval ( ) const +{ + return m_interval; +} + +void Calibration::setStartPoint ( const QPoint &p ) +{ + m_p [0] = p; + checkPoints ( ); + update ( ); +} + +QPoint Calibration::startPoint ( ) const +{ + return m_p [0]; +} + +void Calibration::setEndPoint ( const QPoint &p ) +{ + m_p [1] = p; + checkPoints ( ); + update ( ); +} + +QPoint Calibration::endPoint ( ) const +{ + return m_p [1]; +} + +void Calibration::checkPoints ( ) +{ + int dx = m_scale. width ( ); + int dy = m_scale. height ( ); + + if ( m_p [1]. x ( ) >= dx ) + m_p [1]. setX ( dx - 1 ); + if ( m_p [0]. x ( ) > m_p [1]. x ( )) + m_p [0]. setX ( m_p [1]. x ( )); + + if ( m_p [1]. y ( ) >= dy ) + m_p [1]. setY ( dy - 1 ); + if ( m_p [0]. y ( ) > m_p [1]. y ( )) + m_p [0]. setY ( m_p [1]. y ( )); +} + + +#define SCALEX(x) (BRD+x*(width()- 2*BRD)/m_scale.width()) +#define SCALEY(y) (BRD+y*(height()-2*BRD)/m_scale.height()) + + +static QRect around ( int x, int y ) +{ + return QRect ( x - BRD, y - BRD, 2 * BRD + 1, 2 * BRD + 1 ); +} + +void Calibration::mousePressEvent ( QMouseEvent *e ) +{ + if ( e-> button ( ) != LeftButton ) + return QWidget::mousePressEvent ( e ); + + int olddragged = m_dragged; + int x [2], y [2]; + + m_dragged = -1; + for ( int i = 0; i < 2; i++ ) { + x [i] = SCALEX( m_p [i]. x ( )); + y [i] = SCALEY( m_p [i]. y ( )); + + if (( QABS( e-> x ( ) - x [i] ) <= BRD ) && + ( QABS( e-> y ( ) - y [i] ) <= BRD )) { + m_dragged = i; + break; + } + } + + if ( m_dragged != olddragged ) { + QRect r; + + if ( olddragged >= 0 ) + r |= around ( x [olddragged], y [olddragged] ); + if ( m_dragged >= 0 ) + r |= around ( x [m_dragged], y [m_dragged] ); + repaint ( r ); + } +} + +void Calibration::mouseMoveEvent ( QMouseEvent *e ) +{ + if ( m_dragged < 0 ) + return; + + QPoint n [2]; + + n [m_dragged]. setX (( e-> x ( ) - BRD ) * m_scale. width ( ) / ( width ( ) - 2 * BRD )); + n [m_dragged]. setY (( e-> y ( ) - BRD ) * m_scale. height ( ) / ( height ( ) - 2 * BRD )); + n [1 - m_dragged] = m_p [1 - m_dragged]; + + if (( n [0]. x ( ) > n [1]. x ( )) || ( n [m_dragged]. x ( ) < 0 ) || ( n [m_dragged]. x ( ) >= m_scale. width ( ))) + n [m_dragged]. setX ( m_p [m_dragged]. x ( )); + if (( n [0]. y ( ) > n [1]. y ( )) || ( n [m_dragged]. y ( ) < 0 ) || ( n [m_dragged]. y ( ) >= m_scale. height ( ))) + n [m_dragged]. setY ( m_p [m_dragged]. y ( )); + + QRect r; + int ox [2], oy [2], nx [2], ny [2]; + + for ( int i = 0; i < 2; i++ ) { + nx [i] = SCALEX( n [i]. x ( )); + ny [i] = SCALEY( n [i]. y ( )); + ox [i] = SCALEX( m_p [i]. x ( )); + oy [i] = SCALEY( m_p [i]. y ( )); + + if ( n [i] != m_p [i] ) { + r |= around ( nx [i], ny [i] ); + r |= around ( ox [i], oy [i] ); + m_p [i] = n [i]; + + if ( i == 0 ) { + r |= QRect ( 0, 0, nx [0] - 0 + 1, ny [0] - 0 + 1 ); + r |= QRect ( 0, 0, ox [0] - 0 + 1, oy [0] - 0 + 1 ); + } + else if ( i == 1 ) { + r |= QRect ( nx [1], ny [1], width ( ) - nx [1], height ( ) - ny [1] ); + r |= QRect ( ox [1], oy [1], width ( ) - ox [1], height ( ) - oy [1] ); + } + } + } + if ( r. isValid ( )) { + r |= QRect ( nx [0], ny [0], nx [1] - nx [0] + 1, ny [1] - ny [0] + 1 ); + r |= QRect ( ox [0], oy [0], ox [1] - ox [0] + 1, oy [1] - oy [0] + 1 ); + + repaint ( r ); + } +} + +void Calibration::mouseReleaseEvent ( QMouseEvent *e ) +{ + if ( e-> button ( ) != LeftButton ) + return QWidget::mouseReleaseEvent ( e ); + + if ( m_dragged < 0 ) + return; + + int x = SCALEX( m_p [m_dragged]. x ( )); + int y = SCALEY( m_p [m_dragged]. y ( )); + m_dragged = -1; + + repaint ( around ( x, y )); +} + +void Calibration::paintEvent ( QPaintEvent * ) +{ + QPainter p ( this ); + QColorGroup g = colorGroup ( ); + + int x0 = SCALEX( m_p [0]. x ( )); + int y0 = SCALEY( m_p [0]. y ( )); + int x1 = SCALEX( m_p [1]. x ( )); + int y1 = SCALEY( m_p [1]. y ( )); + + int dx = x1 - x0; + int dy = y1 - y0; + + int ex = x0, ey = y0; + + p. setPen ( g. highlight ( )); + + p. drawLine ( BRD, BRD, ex, BRD ); + p. drawLine ( ex, BRD, ex, ey ); + + for ( int i = 1; i < m_steps; i++ ) { + int fx = x0 + dx * i / m_steps; + int fy = y0 + dy * i / ( m_steps - 1 ); + + p. drawLine ( ex, ey, fx, ey ); + p. drawLine ( fx, ey, fx, fy ); + + ex = fx; + ey = fy; + } + + p. drawLine ( ex, ey, width ( ) - 1 - BRD, ey ); + + p. fillRect ( around ( x0, y0 ), m_dragged == 0 ? g. highlightedText ( ) : g. text ( )); + p. fillRect ( around ( x1, y1 ), m_dragged == 1 ? g. highlightedText ( ) : g. text ( )); + + p. setPen ( g. text ( )); + p. drawText ( QRect ( BRD, BRD, width ( ) - 2*BRD, height() - 2*BRD ), AlignTop | AlignRight, tr( "%1 Steps" ). arg ( m_steps )); +} + |