Filelight – graphical disk usage analyzer
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filelight/src/part/radialMap/widgetEvents.cpp

275 lines
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//Author: Max Howell <max.howell@methylblue.com>, (C) 2003-4
//Copyright: See COPYING file that comes with this distribution
#include "fileTree.h"
#include "radialMap.h" //class Segment
#include "widget.h"
#include <cmath> //::segmentAt()
#include <kcursor.h> //::mouseMoveEvent()
#include <kiconeffect.h> //::mousePressEvent()
#include <kiconloader.h> //::mousePressEvent()
#include <kio/job.h> //::mousePressEvent()
#include <klocale.h>
#include <kmessagebox.h> //::mousePressEvent()
#include <kpopupmenu.h> //::mousePressEvent()
#include <krun.h> //::mousePressEvent()
#include <kurldrag.h>
#include <tqapplication.h>//TQApplication::setOverrideCursor()
#include <tqclipboard.h>
#include <tqpainter.h>
#include <tqtimer.h> //::resizeEvent()
void
RadialMap::Widget::resizeEvent( TQResizeEvent* )
{
if( m_map.resize( rect() ) )
m_timer.start( 500, true ); //will cause signature to rebuild for new size
//always do these as they need to be initialised on creation
m_offset.rx() = (width() - m_map.width()) / 2;
m_offset.ry() = (height() - m_map.height()) / 2;
}
void
RadialMap::Widget::paintEvent( TQPaintEvent* )
{
//bltBit for some TQt setups will bitBlt _after_ the labels are painted. Which buggers things up!
//shame as bitBlt is faster, possibly TQt bug? Should report the bug? - seems to be race condition
//bitBlt( this, m_offset, &m_map );
TQPainter paint( this );
paint.drawPixmap( m_offset, m_map );
//vertical strips
if( m_map.width() < width() )
{
paint.eraseRect( 0, 0, m_offset.x(), height() );
paint.eraseRect( m_map.width() + m_offset.x(), 0, m_offset.x() + 1, height() );
}
//horizontal strips
if( m_map.height() < height() )
{
paint.eraseRect( 0, 0, width(), m_offset.y() );
paint.eraseRect( 0, m_map.height() + m_offset.y(), width(), m_offset.y() + 1 );
}
//exploded labels
if( !m_map.isNull() && !m_timer.isActive() )
paintExplodedLabels( paint );
}
const RadialMap::Segment*
RadialMap::Widget::segmentAt( TQPoint &e ) const
{
//determine which segment TQPoint e is above
e -= m_offset;
if( !m_map.m_signature )
return 0;
if( e.x() <= m_map.width() && e.y() <= m_map.height() )
{
//transform to cartesian coords
e.rx() -= m_map.width() / 2; //should be an int
e.ry() = m_map.height() / 2 - e.y();
double length = hypot( e.x(), e.y() );
if( length >= m_map.m_innerRadius ) //not hovering over inner circle
{
uint depth = ((int)length - m_map.m_innerRadius) / m_map.m_ringBreadth;
if( depth <= m_map.m_visibleDepth ) //**** do earlier since you can //** check not outside of range
{
//vector calculation, reduces to simple trigonometry
//cos angle = (aibi + ajbj) / albl
//ai = x, bi=1, aj=y, bj=0
//cos angle = x / (length)
uint a = (uint)(acos( (double)e.x() / length ) * 916.736); //916.7324722 = #radians in circle * 16
//acos only understands 0-180 degrees
if( e.y() < 0 ) a = 5760 - a;
#define ring (m_map.m_signature + depth)
for( ConstIterator<Segment> it = ring->constIterator(); it != ring->end(); ++it )
if( (*it)->intersects( a ) )
return *it;
#undef ring
}
}
else return m_rootSegment; //hovering over inner circle
}
return 0;
}
void
RadialMap::Widget::mouseMoveEvent( TQMouseEvent *e )
{
//set m_focus to what we hover over, update UI if it's a new segment
Segment const * const oldFocus = m_focus;
TQPoint p = e->pos();
m_focus = segmentAt( p ); //NOTE p is passed by non-const reference
if( m_focus && m_focus->file() != m_tree )
{
if( m_focus != oldFocus ) //if not same as last time
{
setCursor( KCursor::handCursor() );
m_tip->updateTip( m_focus->file(), m_tree );
emit mouseHover( m_focus->file()->fullPath() );
//tqrepaint required to update labels now before transparency is generated
tqrepaint( false );
}
m_tip->moveTo( e->globalPos(), *this, ( p.y() < 0 ) ); //updates tooltip psuedo-tranparent background
}
else if( oldFocus && oldFocus->file() != m_tree )
{
unsetCursor();
m_tip->hide();
update();
emit mouseHover( TQString() );
}
}
void
RadialMap::Widget::mousePressEvent( TQMouseEvent *e )
{
//m_tip is hidden already by event filter
//m_focus is set correctly (I've been strict, I assure you it is correct!)
enum { Konqueror, Konsole, Center, Open, Copy, Delete };
if (m_focus && !m_focus->isFake())
{
const KURL url = Widget::url( m_focus->file() );
const bool isDir = m_focus->file()->isDirectory();
if( e->button() == Qt::RightButton )
{
KPopupMenu popup;
popup.insertTitle( m_focus->file()->fullPath( m_tree ) );
if (isDir) {
popup.insertItem( SmallIconSet( "konqueror" ), i18n( "Open &Konqueror Here" ), Konqueror );
if( url.protocol() == "file" )
popup.insertItem( SmallIconSet( "konsole" ), i18n( "Open &Konsole Here" ), Konsole );
if (m_focus->file() != m_tree) {
popup.insertSeparator();
popup.insertItem( SmallIconSet( "viewmag" ), i18n( "&Center Map Here" ), Center );
}
}
else
popup.insertItem( SmallIconSet( "fileopen" ), i18n( "&Open" ), Open );
popup.insertSeparator();
popup.insertItem( SmallIconSet( "editcopy" ), i18n( "&Copy to clipboard" ), Copy );
popup.insertSeparator();
popup.insertItem( SmallIconSet( "editdelete" ), i18n( "&Delete" ), Delete );
switch (popup.exec( e->globalPos(), 1 )) {
case Konqueror:
//KRun::runCommand will show an error message if there was trouble
KRun::runCommand( TQString( "kfmclient openURL \"%1\"" ).tqarg( url.url() ) );
break;
case Konsole:
// --workdir only works for local file paths
KRun::runCommand( TQString( "konsole --workdir \"%1\"" ).tqarg( url.path() ) );
break;
case Center:
case Open:
goto section_two;
case Copy:
TQApplication::tqclipboard()->setData( new KURLDrag( KURL::List( url ) ) );
break;
case Delete:
{
const KURL url = Widget::url( m_focus->file() );
const TQString message = m_focus->file()->isDirectory()
? i18n( "<qt>The directory at <i>'%1'</i> will be <b>recursively</b> and <b>permanently</b> deleted." )
: i18n( "<qt><i>'%1'</i> will be <b>permanently</b> deleted." );
const int userIntention = KMessageBox::warningContinueCancel(
this, message.tqarg( url.prettyURL() ),
TQString(), KGuiItem( i18n("&Delete"), "editdelete" ) );
if (userIntention == KMessageBox::Continue) {
KIO::Job *job = KIO::del( url );
job->setWindow( this );
connect( job, TQT_SIGNAL(result( KIO::Job* )), TQT_SLOT(deleteJobFinished( KIO::Job* )) );
TQApplication::setOverrideCursor( KCursor::workingCursor() );
}
}
default:
//ensure m_focus is set for new mouse position
sendFakeMouseEvent();
}
}
else { // not right mouse button
section_two:
const TQRect rect( e->x() - 20, e->y() - 20, 40, 40 );
m_tip->hide(); // user expects this
if (!isDir || e->button() == Qt::MidButton) {
KIconEffect::visualActivate( this, rect );
new KRun( url, this, true ); //FIXME see above
}
else if (m_focus->file() != m_tree) { // is left click
KIconEffect::visualActivate( this, rect );
emit activated( url ); //activate first, this will cause UI to prepare itself
createFromCache( (Directory *)m_focus->file() );
}
else
emit giveMeTreeFor( url.upURL() );
}
}
}
void
RadialMap::Widget::deleteJobFinished( KIO::Job *job )
{
TQApplication::restoreOverrideCursor();
if( !job->error() )
tqinvalidate();
else
job->showErrorDialog( this );
}
#include "debug.h"
void
RadialMap::Widget::dropEvent( TQDropEvent *e )
{
DEBUG_ANNOUNCE
KURL::List urls;
if (KURLDrag::decode( e, urls ) && urls.count())
emit giveMeTreeFor( urls.first() );
}
void
RadialMap::Widget::dragEnterEvent( TQDragEnterEvent *e )
{
DEBUG_ANNOUNCE
e->accept( KURLDrag::canDecode( e ) );
}