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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 "segmentTip.h"
#include <cstdlib>
#include <kapplication.h> //installing eventFilters
#include <kglobal.h>
#include <kglobalsettings.h>
#include <klocale.h>
#include <kpixmapeffect.h>
#include <tqpainter.h>
#include <tqtooltip.h> //for its palette
namespace RadialMap {
bool isBackingStoreActive()
{
// # xdpyinfo | grep backing
// options: backing-store YES, save-unders YES
char buffer[4096];
FILE *xdpyinfo = popen( "xdpyinfo", "r" );
int const N = fread( (void*)buffer, sizeof(char), 4096, xdpyinfo );
buffer[ N ] = '\0';
pclose( xdpyinfo );
return TQString(TQString::fromLocal8Bit( buffer )).contains( "backing-store YES" );
}
SegmentTip::SegmentTip( uint h )
: TQWidget( 0, 0, WNoAutoErase | WStyle_Customize | WStyle_NoBorder | WStyle_Tool | WStyle_StaysOnTop | WX11BypassWM )
, m_cursorHeight( -h )
, m_backing_store( isBackingStoreActive() )
{
setBackgroundMode( TQt::NoBackground );
}
void
SegmentTip::moveTo( TQPoint p, const TQWidget &canvas, bool placeAbove )
{
//**** this function is very slow and seems to be visibly influenced by operations like mapFromGlobal() (who knows why!)
// ** so any improvements are much desired
//TODO uints could improve the class
p.rx() -= rect().center().x();
p.ry() -= (placeAbove ? 8 + height() : m_cursorHeight - 8);
const TQRect screen = KGlobalSettings::desktopGeometry( parentWidget() );
const int x = p.x();
const int y = p.y();
const int x2 = x + width();
const int y2 = y + height(); //how's it ever gunna get below screen height?! (well you never know I spose)
const int sw = screen.width();
const int sh = screen.height();
if( x < 0 ) p.setX( 0 );
if( y < 0 ) p.setY( 0 );
if( x2 > sw ) p.rx() -= x2 - sw;
if( y2 > sh ) p.ry() -= y2 - sh;
//I'm using this TQPoint to determine where to offset the bitBlt in m_pixmap
TQPoint offset = canvas.mapToGlobal( TQPoint() ) - p;
if( offset.x() < 0 ) offset.setX( 0 );
if( offset.y() < 0 ) offset.setY( 0 );
const TQRect alphaMaskRect( canvas.mapFromGlobal( p ), size() );
const TQRect intersection( alphaMaskRect.intersect( canvas.rect() ) );
m_pixmap.resize( size() ); //move to updateTip once you are sure it can never be null
bitBlt( &m_pixmap, offset, &canvas, intersection, TQt::CopyROP );
TQColor const c = TQToolTip::palette().color( TQPalette::Active, TQColorGroup::Background );
if (!m_backing_store)
m_pixmap.fill( c );
TQPainter paint( &m_pixmap );
paint.setPen( TQt::black );
paint.setBrush( TQt::NoBrush );
paint.drawRect( rect() );
paint.end();
if (m_backing_store)
m_pixmap = KPixmapEffect::fade( m_pixmap, 0.6, c );
paint.begin( &m_pixmap );
paint.drawText( rect(), AlignCenter, m_text );
paint.end();
p += screen.topLeft(); //for Xinerama users
move( x, y );
show();
update();
}
void
SegmentTip::updateTip( const File* const file, const Directory* const root )
{
const TQString s1 = file->fullPath( root );
TQString s2 = file->humanReadableSize();
KLocale *loc = KGlobal::locale();
const uint MARGIN = 3;
const uint pc = 100 * file->size() / root->size();
uint maxw = 0;
uint h = fontMetrics().height()*2 + 2*MARGIN;
if( pc > 0 ) s2 += TQString( " (%1%)" ).arg( loc->formatNumber( pc, 0 ) );
m_text = s1;
m_text += '\n';
m_text += s2;
if( file->isDirectory() )
{
double files = static_cast<const Directory*>(file)->children();
const uint pc = uint((100 * files) / (double)root->children());
TQString s3 = i18n( "Files: %1" ).arg( loc->formatNumber( files, 0 ) );
if( pc > 0 ) s3 += TQString( " (%1%)" ).arg( loc->formatNumber( pc, 0 ) );
maxw = fontMetrics().width( s3 );
h += fontMetrics().height();
m_text += '\n';
m_text += s3;
}
uint
w = fontMetrics().width( s1 ); if( w > maxw ) maxw = w;
w = fontMetrics().width( s2 ); if( w > maxw ) maxw = w;
resize( maxw + 2 * MARGIN, h );
}
bool
SegmentTip::event( TQEvent *e )
{
switch( e->type() )
{
case TQEvent::Show:
kapp->installEventFilter( this );
break;
case TQEvent::Hide:
kapp->removeEventFilter( this );
break;
case TQEvent::Paint:
{
//TQPainter( this ).drawPixmap( 0, 0, m_pixmap );
bitBlt( this, 0, 0, &m_pixmap );
return true;
}
default:
;
}
return false/*TQWidget::event( e )*/;
}
bool
SegmentTip::eventFilter( TQObject*, TQEvent *e )
{
switch ( e->type() )
{
case TQEvent::Leave:
// case TQEvent::MouseButtonPress:
// case TQEvent::MouseButtonRelease:
case TQEvent::KeyPress:
case TQEvent::KeyRelease:
case TQEvent::FocusIn:
case TQEvent::FocusOut:
case TQEvent::Wheel:
hide(); //FALL THROUGH
default:
return false; //allow this event to passed to target
}
}
} //namespace RadialMap
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