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180 lines
7.4 KiB
180 lines
7.4 KiB
/*
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Copyright ( C ) 2003 Arnold Krille <arnold@arnoldarts.de>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation;
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version 2 of the License.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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*/
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#include "ktickmarks_impl.h"
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#include <kdebug.h>
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#include <qpainter.h>
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#include <qfont.h>
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#include <qfontmetrics.h>
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KTickmarks_impl::KTickmarks_impl( QFrame* w ) : Arts::KFrame_impl( w ? w : new KTickmarks_Widget( 0 ) )
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{
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//kdDebug()<<"KTickmarks_impl::KTickmarks_impl( QFrame* w="<<w<<" )"<<endl;
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_tmwidget = static_cast<KTickmarks_Widget*>( _qwidget );
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}
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float KTickmarks_impl::min() { return _tmwidget->dbmin; }
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void KTickmarks_impl::min( float n ) { _tmwidget->dbmin = n; }
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float KTickmarks_impl::max() { return _tmwidget->dbmax; }
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void KTickmarks_impl::max( float n ) { _tmwidget->dbmax = n; }
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float KTickmarks_impl::minstep() { return _tmwidget->minstep; }
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void KTickmarks_impl::minstep( float n ) { _tmwidget->minstep = n; }
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float KTickmarks_impl::substep() { return _tmwidget->substep; }
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void KTickmarks_impl::substep( float n ) { _tmwidget->substep = n; }
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Arts::Direction KTickmarks_impl::direction() { return _tmwidget->_dir; }
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void KTickmarks_impl::direction( Arts::Direction n ) { _tmwidget->_dir = n; }
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long KTickmarks_impl::position() { return _tmwidget->_pos; }
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void KTickmarks_impl::position( long n ) { _tmwidget->_pos = n; }
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void KTickmarks_impl::constructor( float min, float max, Arts::Direction dir, long pos ) {
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this->min( min ); this->max( max ); direction( dir ); position( pos );
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}
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KTickmarks_Widget::KTickmarks_Widget( KTickmarks_impl* impl, QWidget* p, const char* n ) : QFrame( p,n ), dB2VolCalc( -24, 0 ), _impl( impl ), _pos( Arts::posLeft ), _dir( Arts::BottomToTop ), minstep( 1 ), substep( 0.5 ) {
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setMinimumSize( 20,20 );
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}
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void KTickmarks_Widget::drawContents( QPainter* p ) {
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//kdDebug()<<"KTickmarks::drawContents( QPainter* "<<p<<" )"<<endl;
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bool left=false, right=false;
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if ( _pos&Arts::posLeft ) left=true;
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if ( _pos&Arts::posRight ) right=true;
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// Setting the font
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QFont font;
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font.setPixelSize( 8 /*font.pixelSize()/2*/ ); // Maybe this could be adjusted...
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p->setFont( font );
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// Determining the size of the largest text (currently the text at the minimum-scale)
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QFontMetrics fontmetric( font );
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QRect fontrect = fontmetric.boundingRect( QString::number( dbmin ) );
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// Calculating stepsizes
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float _minstepcount = ( dbmax-dbmin )/minstep;
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float _minstep = minstep; // this value gets changed
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float _substepcount = ( dbmax-dbmin )/substep;
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float _substep = substep; // this value gets changed
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// Calculating minimum size of the widget
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int _minsize;
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// Shorcuts
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int w,h;
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QColor colornormal = colorGroup().foreground();
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QColor colordiff = colorGroup().buttonText();
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if ( _dir == Arts::BottomToTop || _dir == Arts::TopToBottom ) {
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p->translate( contentsRect().left(), contentsRect().bottom() );
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// Calculating stepsizes
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for ( int i=1; _minstepcount*( fontrect.height()+4 ) > contentsRect().height(); i++ ) {
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_minstepcount = ( dbmax-dbmin ) / minstep / i;
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_minstep = minstep*i;
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}
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while ( _substepcount*2 > contentsRect().height() ) { _substepcount/=2; _substep*=2; }
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// Calculating minimum size of the widget
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_minsize=fontrect.width()+4;
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if ( left ) _minsize+=6;
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if ( right ) _minsize+=6;
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setMinimumWidth( _minsize + frameWidth() + 2 );
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// setMaximumWidth( _minsize /*+6*/ );
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w = contentsRect().width(); // Just a shortcut
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h=0;
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// Painting substep marks
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p->setPen( QPen( colordiff, 1 ) );
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for ( float i=dbmax; i>=dbmin; i-=_substep ) {
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h = int( -contentsRect().height() * dbtondb( i ) );
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if ( _dir==Arts::TopToBottom ) h = 1 - h;
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if ( left ) p->drawLine( 0, h, 3, h );
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if ( right ) p->drawLine( w-3, h, w, h );
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}
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// Painting step marks and texts
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p->setPen( QPen( colornormal, 1 ) );
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for ( float i=0; i>=dbmin; i-=_minstep ) {
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h = int( -contentsRect().height() * dbtondb( i ) );
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if ( _dir==Arts::TopToBottom ) h = 1 - h;
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if ( left ) p->drawLine( 0, h, 6, h );
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p->drawText( ( w - (left)*6 - (right)*6 - fontrect.width() )/2 + (left)*6
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, h-fontrect.height()/2,
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fontrect.width(), fontrect.height()+2,
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Qt::AlignRight|Qt::AlignTop, QString::number( i ) );
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if ( right ) p->drawLine( w-6, h, w, h );
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}
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for ( float i=_minstep; i<=dbmax; i+=_minstep ) {
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h = int( -contentsRect().height() * dbtondb( i ) );
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if ( _dir==Arts::TopToBottom ) h = 1 - h;
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if ( left ) p->drawLine( 0, h, 6, h );
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p->drawText( ( w - (left)*6 - (right)*6 - fontrect.width() )/2 + (left)*6
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, h-fontrect.height()/2,
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fontrect.width(), fontrect.height()+2,
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Qt::AlignRight|Qt::AlignTop, QString::number( i ) );
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if ( right ) p->drawLine( w-6, h, w, h );
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}
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} else {
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//if ( _dir == Arts::LeftToRight || _dir == Arts::RightToLeft ) {
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// Calculating stepsizes
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for ( int i=1; _minstepcount*( fontrect.width()+4 ) > contentsRect().width(); i++ ) {
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_minstepcount = ( dbmax-dbmin ) / minstep / i;
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_minstep = minstep*i;
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}
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while ( _substepcount*2 > contentsRect().width() ) { _substepcount/=2; _substep*=2; }
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// Calculating minimum size of the widget
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_minsize=fontrect.height()+4;
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if ( left ) _minsize+=6;
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if ( right ) _minsize+=6;
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setMinimumHeight( _minsize + frameWidth() + 2 );
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// setMaximumHeight( _minsize /*+6*/ );
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w = 0; // Just a shortcut
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h = frameWidth() + contentsRect().height();
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// Painting substep marks
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p->setPen( QPen( colordiff, 1 ) );
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for ( float i=dbmax; i>=dbmin; i-=_substep ) {
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w = this->frameWidth()+ int( contentsRect().width() * dbtondb( i ) );
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if ( _dir==Arts::RightToLeft ) w = 1 - w;
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if ( left ) p->drawLine( w, frameWidth(), w, frameWidth() + 3 );
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if ( right ) p->drawLine( w, h-3, w, h );
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}
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// Painting step marks and texts
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p->setPen( QPen( colornormal, 1 ) );
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for ( float i=0; i>=dbmin; i-=_minstep ) {
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w = int( contentsRect().width() * dbtondb( i ) );
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if ( _dir==Arts::RightToLeft ) w = 1 - w;
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if ( left ) p->drawLine( w, 0, w, 6 );
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p->drawText( w - fontrect.width()/2
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, ( h - (left)*6 - (right)*6 - fontrect.height() )/2 + (left)*6,
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fontrect.width(), fontrect.height()+2,
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Qt::AlignRight|Qt::AlignTop, QString::number( i ) );
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if ( right ) p->drawLine( w, h-6, w, h );
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}
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for ( float i=_minstep; i<=dbmax; i+=_minstep ) {
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h = int( -contentsRect().height() * dbtondb( i ) );
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if ( _dir==Arts::RightToLeft ) w = 1 - w;
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if ( left ) p->drawLine( w, 0, w, 6 );
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p->drawText( w - fontrect.width()/2
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, ( h - (left)*6 - (right)*6 - fontrect.height() )/2 + (left)*6,
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fontrect.width(), fontrect.height()+2,
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Qt::AlignRight|Qt::AlignTop, QString::number( i ) );
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if ( right ) p->drawLine( w, h-6, w, h );
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}
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}
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}
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REGISTER_IMPLEMENTATION( KTickmarks_impl );
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#include "ktickmarks_impl.moc"
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// vim: sw=4 ts=4
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