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//Author: Max Howell <[email protected]>, (C) 2003-4
//Copyright: See COPYING file that comes with this distribution
#include "builder.h"
#include "Config.h"
#include "fileTree.h"
#include <kglobal.h> //locale object
#include <klocale.h>
#include "widget.h"
//**** REMOVE NEED FOR the +1 with MAX_RING_DEPTH uses
//**** add some angle bounds checking (possibly in Segment ctor? can I delete in a ctor?)
//**** this class is a mess
RadialMap::Builder::Builder( RadialMap::Map *m, const Directory* const d, bool fast )
: m_map( m )
, m_root( d )
, m_minSize( static_cast<FileSize>((d->size() * 3) / (PI * m->height() - m->MAP_2MARGIN )) )
, m_depth( &m->m_visibleDepth )
{
m_signature = new Chain<Segment> [*m_depth + 1];
if( !fast )//|| *m_depth == 0 ) //depth 0 is special case usability-wise //**** WHY?!
{
//determine depth rather than use old one
findVisibleDepth( d ); //sets m_depth
}
m_map->setRingBreadth();
setLimits( m_map->m_ringBreadth );
build( d );
m_map->m_signature = m_signature;
delete []m_limits;
}
void
RadialMap::Builder::findVisibleDepth( const Directory* const dir, const unsigned int depth )
{
//**** because I don't use the same minimumSize criteria as in the visual function
// this can lead to incorrect visual representation
//**** BUT, you can't set those limits until you know m_depth!
//**** also this function doesn't check to see if anything is actually visible
// it just assumes that when it reaches a new level everything in it is visible
// automatically. This isn't right especially as there might be no files in the
// dir provided to this function!
static uint stopDepth = 0;
if( dir == m_root )
{
stopDepth = *m_depth;
*m_depth = 0;
}
if( *m_depth < depth ) *m_depth = depth;
if( *m_depth >= stopDepth ) return;
for( ConstIterator<File> it = dir->constIterator(); it != dir->end(); ++it )
if( (*it)->isDir() && (*it)->size() > m_minSize )
findVisibleDepth( (Directory *)*it, depth + 1 ); //if no files greater than min size the depth is still recorded
}
void
RadialMap::Builder::setLimits( const uint &b ) //b = breadth?
{
double size3 = m_root->size() * 3;
double pi2B = PI * 2 * b;
m_limits = new FileSize [*m_depth + 1]; //FIXME delete!
for( unsigned int d = 0; d <= *m_depth; ++d )
m_limits[d] = (FileSize)(size3 / (double)(pi2B * (d + 1))); //min is angle that gives 3px outer diameter for that depth
}
//**** segments currently overlap at edges (i.e. end of first is start of next)
bool
RadialMap::Builder::build( const Directory* const dir, const unsigned int depth, unsigned int a_start, const unsigned int a_end )
{
//first iteration: dir == m_root
if( dir->fileCount() == 0 ) //we do fileCount rather than size to avoid chance of divide by zero later
return false;
FileSize hiddenSize = 0;
uint hiddenFileCount = 0;
for( ConstIterator<File> it = dir->constIterator(); it != dir->end(); ++it )
{
if( (*it)->size() > m_limits[depth] )
{
unsigned int a_len = (unsigned int)(5760 * ((double)(*it)->size() / (double)m_root->size()));
Segment *s = new Segment( *it, a_start, a_len );
(m_signature + depth)->append( s );
if( (*it)->isDir() )
{
if( depth != *m_depth )
{
//recurse
s->m_hasHiddenChildren = build( (Directory*)*it, depth + 1, a_start, a_start + a_len );
}
else s->m_hasHiddenChildren = true;
}
a_start += a_len; //**** should we add 1?
} else {
hiddenSize += (*it)->size();
if( (*it)->isDir() ) //**** considered virtual, but dir wouldn't count itself!
hiddenFileCount += static_cast<const Directory*>(*it)->fileCount(); //need to add one to count the dir as well
++hiddenFileCount;
}
}
if( hiddenFileCount == dir->fileCount() && !Config::showSmallFiles )
return true;
else if( (Config::showSmallFiles && hiddenSize > m_limits[depth]) || (depth == 0 && (hiddenSize > dir->size()/8)) /*|| > size() * 0.75*/ )
{
//append a segment for unrepresented space - a "fake" segment
const QString s = i18n( "%1 files: ~ %2" ).arg( KGlobal::locale()->formatNumber( hiddenFileCount, 0 ) ).arg( File::humanReadableSize( hiddenSize/hiddenFileCount ) );
(m_signature + depth)->append( new Segment( new File( s, hiddenSize ), a_start, a_end - a_start, true ) );
}
return false;
}
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