SquidPrefsDialog.cpp #1

// SquidPrefsDialog.cpp: implementation of the SquidPrefsDialog class.
//
//////////////////////////////////////////////////////////////////////

#include <qcolordialog.h>
#include <qgroupbox.h>
#include <qlayout.h>
#include <qlineedit.h>
#include <qpushbutton.h>
#include <qwhatsthis.h>

#include <math.h>

#include "SquidMainWindow.h"

#include "SquidPrefsDialog.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

SquidPrefsDialog::SquidPrefsDialog( SquidMainWindow* parent )
: QDialog( parent ), smw( parent )
{
	setCaption( "SQUID Settings" );
	QVBoxLayout* vlayout = new QVBoxLayout( this, 20, -1 );
	
	QGroupBox* abox = new QGroupBox( 2, Horizontal, "Application Settings", this );
	vlayout->addWidget( abox );

	bkswatch = new QLabel( "Background Color", abox );
	bkswatch->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	QRgb col = smw->BGColor();
	bgcol = col;
	bkswatch->setBackgroundColor( col );
	col = ~col == col ? 0 : ~col ;
	QPushButton* bkbutton = new QPushButton( "Change...", abox );
	bkbutton->setFixedSize( bkbutton->sizeHint() );
	connect( bkbutton, SIGNAL( clicked() ), this, SLOT( ChooseBGColor() ) );

	QLabel* bsizel = new QLabel
		( "Blend images with area <", abox );
	QLineEdit* bsizee = new QLineEdit
		( QString::number( smw->BlendSize() ), abox );
	connect ( bsizee, SIGNAL( textChanged( const QString& ) ), 
		this, SLOT( ChooseBlendSize( const QString& ) ) );
	blendsize = smw->BlendSize();
	
	QGroupBox* dbox = new QGroupBox( 3, Horizontal, "Diff Settings", this );
	vlayout->addWidget( dbox );

	QFrame* dtolf = new QFrame( dbox );
	QGridLayout* dtlayout = new QGridLayout( dtolf );
	tol1 = new QFrame( dtolf );
	tol2 = new QFrame( dtolf );
	tol3 = new QFrame( dtolf );
	tol4 = new QFrame( dtolf );
	tol1->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	tol2->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	tol3->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	tol4->setFrameStyle( QFrame::StyledPanel | QFrame::Sunken );
	tol1->setBackgroundColor( QColor( 0, 0, 0 ) );
	dtlayout->addWidget( tol1, 0, 0 );
	dtlayout->addWidget( tol2, 0, 1 );
	dtlayout->addWidget( tol3, 1, 0 );
	dtlayout->addWidget( tol4, 1, 1 );
	tol1->resize( 25, 25 );
	tol2->resize( 25, 25 );
	tol3->resize( 25, 25 );
	tol4->resize( 25, 25 );
	dtolf->setFixedSize( 50, 50 );
	dtolf->show();
	QLabel* dtl = new QLabel( " These colors\nare considered\n  \"identical\".", dbox );
	QSlider* dtsli = new QSlider( 0, 9999, 100, smw->DiffTol(), Horizontal, dbox );
	connect( dtsli, SIGNAL( valueChanged( int ) ), this, SLOT( ChooseDiffTol( int ) ) );
	ChooseDiffTol( smw->DiffTol() );

	dbox->addSpace( 0 );
	QLabel* mbl1 = new QLabel( "Min. diff area", dbox );
	QLineEdit* mbe = new QLineEdit
		( QString::number( smw->MinBlock() ), dbox );
	connect( mbe, SIGNAL( textChanged( const QString& ) ),
		this, SLOT( ChooseMinBlock( const QString& ) ) );
	minblock = smw->MinBlock();


	QHBoxLayout* buttons = new QHBoxLayout( vlayout );

	QPushButton* ok = new QPushButton( "Save", this );
	buttons->addWidget( ok );
	ok->setFixedSize( ok->sizeHint() );
	QPushButton* no = new QPushButton( "Cancel", this );
	buttons->addWidget( no );
	no->setFixedSize( no->sizeHint() );
	ok->setAutoDefault( true );
	ok->setFocus();
	connect( ok, SIGNAL( clicked() ), this, SLOT( ExportSettings() ) );
	connect( no, SIGNAL( clicked() ), this, SLOT( reject() ) );

	QString wabox = QString
		( "<b></b>These settings affect the entire application.  " );
	wabox += "<br> <br> ";
	wabox += "The background color is used in the middle pane to mask out ";
	wabox += "identical pixels if the <b>Subtract Identical</b> option has ";
	wabox += "been selected, as well as in the side panes to indicate 'missing' ";
	wabox += "sections if the images are different dimensions. " ;
	wabox += "<br> <br>" ;
	wabox += "The slider in the middle pane will 'blend' the two images if the ";
	wabox += "combined image is under a certain size.  If the area of the image ";
	wabox += "in pixels exceeds the number given here, a much faster 'stipple'";
	wabox += "effect will be used instead to mix the images.";
	QWhatsThis::add( abox, wabox );

	QString wdbox = QString
		( "These settings affect the <b>Subtract Identical</b> and <b>Highlight Diffs</b> features." );
	wdbox += "<br> <br>";
	wdbox += "The slider controls how 'strict' the RGB comparison will be when ";
	wdbox += "determining whether two pixels are 'identical' or not.  Identical ";
	wdbox += "pixels are masked out when the <b>Subtract Diffs</b> feature is ";
	wdbox += "used, and non-identical pixels are used to determine the bounding ";
	wdbox += "boxes generated by the <b>Highlight Diffs</b> feature.  ";
	wdbox += "<br> <br>";
	wdbox += "Diff bounding boxes will only be displayed if their areas meet or ";
	wdbox += "exceed, in pixels, the number entered here.";
	QWhatsThis::add( dbox, wdbox );

	setFixedSize( sizeHint() );
	setMaximumWidth( 400 );

	show();
}

void SquidPrefsDialog::ChooseBGColor()
{
	QRgb foo = QColorDialog::getRgba
		( bkswatch->backgroundColor().rgb(), NULL, this );
	bkswatch->setBackgroundColor( foo );
	bgcol = foo;
	foo = ~foo == foo ? 0 : ~foo ;
	bkswatch->setPaletteForegroundColor( foo  );
}

void SquidPrefsDialog::ChooseBlendSize( const QString& area )
{
	bool ok;
	int size = area.toInt( &ok );
	if ( ok ) blendsize = area.toInt();
}

void SquidPrefsDialog::ChooseDiffTol( int tol )
{
	difftol = tol;
	int f;
	f = sqrt( tol / 3.0 );
	tol2->setBackgroundColor( QColor( f, f, f ) );
	f = sqrt( tol / 2.0 );
	tol3->setBackgroundColor( QColor( f, f, 0 ) );
	f = sqrt( tol / 1.0 );
	tol4->setBackgroundColor( QColor( 0, 0, f ) );
}

void SquidPrefsDialog::ChooseMinBlock( const QString& area )
{
	bool ok;
	int size = area.toInt( &ok );
	if ( ok ) minblock = area.toInt();
}

void SquidPrefsDialog::ExportSettings()
{
	smw->SetDiffTol( difftol );
	smw->SetBlendSize( blendsize );
	smw->SetBGColor( bgcol );
	smw->SetMinBlock( minblock );
	accept();
}