flat.cpp

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

	int xp = x + w/2;
	p->drawLine( xp-1, y+a+3, xp-1, y+h-b-4 );
	p->drawLine( xp, y+a+3, xp, y+h-b-4 );
    } else {
	p->drawRect( x+a, y, w-a-b, h );
	int yp = y + h/2;
	p->drawLine( x+a+3, yp-1, x+w-b-4, yp-1 );
	p->drawLine( x+a+3, yp, x+w-b-4, yp );
    }
}

void FlatStyle::drawSliderMask ( QPainter * p, int x, int y, int w, int h,
	Orientation o, bool tickAbove, bool tickBelow )
{
    int a = tickAbove ? 3 : 0;
    int b = tickBelow ? 3 : 0;
    if ( o == Horizontal )
	p->fillRect( x, y+a, w, h-a-b, color1 );
    else
	p->fillRect( x+a, y, w-a-b, h, color1 );
}

/*!\reimp
 */
void FlatStyle::drawSliderGrooveMask( QPainter *p,
					int x, int y, int w, int h,
					const QColorGroup& , QCOORD c,
					Orientation orient )
{
    if ( orient == Horizontal )
	p->fillRect( x, y + c - 2,  w, 4, color1 );
    else
	p->fillRect( x + c - 2, y, 4, h, color1 );
}

void FlatStyle::drawSliderGroove( QPainter *p, int x, int y, int w, int h, const QColorGroup &g, QCOORD c, Orientation orient )
{
    if ( orient == Horizontal )
	p->fillRect( x, y + c - 2,  w, 4, g.foreground() );
    else
	p->fillRect( x + c - 2, y, 4, h, g.foreground() );
}

void FlatStyle::drawTab( QPainter *p, const QTabBar *tb, QTab *t, bool selected )
{
    QRect r( t->rect() );
    if ( tb->shape()  == QTabBar::RoundedAbove ) {
	p->setPen( tb->colorGroup().foreground() );
	p->drawLine( r.left(), r.bottom(), r.right(), r.bottom() );
	if ( r.left() == 0 )
	    p->drawPoint( tb->rect().bottomLeft() );
	else
	    p->drawLine( r.left(), r.bottom(), r.right(), r.bottom() );

	if ( selected ) {
	    p->setPen( tb->colorGroup().background() );
	    p->drawLine( r.left()+2, r.top()+1, r.right()-2, r.top()+1 );
	    p->fillRect( QRect( r.left()+1, r.top()+2, r.width()-2, r.height()-2),
			 tb->colorGroup().brush( QColorGroup::Background ));
	} else {
	    r.setRect( r.left() + 2, r.top() + 2,
		       r.width() - 4, r.height() - 2 );
	    p->setPen( tb->colorGroup().button() );
	    p->drawLine( r.left()+2, r.top()+1, r.right()-2, r.top()+1 );
	    p->fillRect( QRect( r.left()+1, r.top()+2, r.width()-2, r.height()-3),
			 tb->colorGroup().brush( QColorGroup::Button ));
	}

	p->setPen( tb->colorGroup().foreground() );
	p->drawLine( r.left(), r.bottom()-1, r.left(), r.top() + 2 );
	p->drawPoint( r.left()+1, r.top() + 1 );
	p->drawLine( r.left()+2, r.top(),
		     r.right() - 2, r.top() );

	p->drawPoint( r.right() - 1, r.top() + 1 );
	p->drawLine( r.right(), r.top() + 2, r.right(), r.bottom() - 1);
    } else if ( tb->shape() == QTabBar::RoundedBelow ) {
	if ( selected ) {
	    p->setPen( tb->colorGroup().background() );
	    p->drawLine( r.left()+2, r.bottom()-1, r.right()-2, r.bottom()-1 );
	    p->fillRect( QRect( r.left()+1, r.top(), r.width()-2, r.height()-2),
			 tb->palette().normal().brush( QColorGroup::Background ));
	} else {
	    p->setPen( tb->colorGroup().foreground() );
	    p->drawLine( r.left(), r.top(),
			 r.right(), r.top() );
	    r.setRect( r.left() + 2, r.top(),
		       r.width() - 4, r.height() - 2 );
	    p->setPen( tb->colorGroup().button() );
	    p->drawLine( r.left()+2, r.bottom()-1, r.right()-2, r.bottom()-1 );
	    p->fillRect( QRect( r.left()+1, r.top()+1, r.width()-2, r.height()-3),
			 tb->palette().normal().brush( QColorGroup::Button ));
	}

	p->setPen( tb->colorGroup().foreground() );
	p->drawLine( r.right(), r.top(),
		     r.right(), r.bottom() - 2 );
	p->drawPoint( r.right() - 1, r.bottom() - 1 );
	p->drawLine( r.right() - 2, r.bottom(),
		     r.left() + 2, r.bottom() );

	p->drawLine( r.left(), r.top()+1,
		     r.left(), r.bottom() - 2 );
	p->drawPoint( r.left() + 1, r.bottom() - 1 );
	if ( r.left() == 0 )
	    p->drawPoint( tb->rect().topLeft() );

    } else {
	QCommonStyle::drawTab( p, tb, t, selected );
    }
}

static const int motifItemFrame		= 0;	// menu item frame width
static const int motifSepHeight		= 2;	// separator item height
static const int motifItemHMargin	= 1;	// menu item hor text margin
static const int motifItemVMargin	= 2;	// menu item ver text margin
static const int motifArrowHMargin	= 0;	// arrow horizontal margin
static const int motifTabSpacing	= 12;	// space between text and tab
static const int motifCheckMarkHMargin	= 1;	// horiz. margins of check mark
static const int windowsRightBorder	= 8;    // right border on windows
static const int windowsCheckMarkWidth  = 2;    // checkmarks width on windows

void FlatStyle::polishPopupMenu ( QPopupMenu *m )
{
    QWindowsStyle::polishPopupMenu( m );
    m->setLineWidth( 1 );
}

/*! \reimp
*/
int FlatStyle::extraPopupMenuItemWidth( bool checkable, int maxpmw, QMenuItem* mi, const QFontMetrics& /*fm*/ )
{
#ifndef QT_NO_MENUDATA
    int w = 2*motifItemHMargin + 2*motifItemFrame; // a little bit of border can never harm

    if ( mi->isSeparator() )
	return 10; // arbitrary
    else if ( mi->pixmap() )
	w += mi->pixmap()->width();	// pixmap only

    if ( !mi->text().isNull() ) {
	if ( mi->text().find('\t') >= 0 )	// string contains tab
	    w += motifTabSpacing;
    }

    if ( maxpmw ) { // we have iconsets
	w += maxpmw;
	w += 6; // add a little extra border around the iconset
    }

    if ( checkable && maxpmw < windowsCheckMarkWidth ) {
	w += windowsCheckMarkWidth - maxpmw; // space for the checkmarks
    }

    if ( maxpmw > 0 || checkable ) // we have a check-column ( iconsets or checkmarks)
	w += motifCheckMarkHMargin; // add space to separate the columns

    w += windowsRightBorder; // windows has a strange wide border on the right side

    return w;
#endif
}

/*! \reimp
*/
int FlatStyle::popupMenuItemHeight( bool /*checkable*/, QMenuItem* mi, const QFontMetrics& fm )
{
#ifndef QT_NO_MENUDATA    
    int h = 0;
    if ( mi->isSeparator() )			// separator height
	h = motifSepHeight;
    else if ( mi->pixmap() )		// pixmap height
	h = mi->pixmap()->height() + 2*motifItemFrame;
    else					// text height
	h = fm.height() + 2*motifItemVMargin + 2*motifItemFrame - 1;

    if ( !mi->isSeparator() && mi->iconSet() != 0 ) {
	h = QMAX( h, mi->iconSet()->pixmap( QIconSet::Small, QIconSet::Normal ).height() + 2*motifItemFrame );
    }
    if ( mi->custom() )
	h = QMAX( h, mi->custom()->sizeHint().height() + 2*motifItemVMargin + 2*motifItemFrame ) - 1;
    return h;
#endif
}

void FlatStyle::drawPopupMenuItem( QPainter* p, bool checkable, int maxpmw, int tab, QMenuItem* mi,
				       const QPalette& pal,
				       bool act, bool enabled, int x, int y, int w, int h)
{
#ifndef QT_NO_MENUDATA    
    const QColorGroup & g = pal.active();
    bool dis	  = !enabled;
    QColorGroup itemg = dis ? pal.disabled() : pal.active();

    if ( checkable )
	maxpmw = QMAX( maxpmw, 8 ); // space for the checkmarks

    int checkcol	  =     maxpmw;

    if ( mi && mi->isSeparator() ) {			// draw separator
	p->setPen( g.dark() );
	p->drawLine( x, y, x+w, y );
	return;
    }

    QBrush fill = act? g.brush( QColorGroup::Highlight ) :
			    g.brush( QColorGroup::Button );
    p->fillRect( x, y, w, h, fill);

    if ( !mi )
	return;

    if ( mi->isChecked() ) {
	if ( act && !dis ) {
	    qDrawShadePanel( p, x, y, checkcol, h,
			     g, TRUE, 1, &g.brush( QColorGroup::Button ) );
	} else {
	    qDrawShadePanel( p, x, y, checkcol, h,
			     g, TRUE, 1, &g.brush( QColorGroup::Midlight ) );
	}
    } else if ( !act ) {
	p->fillRect(x, y, checkcol , h,
		    g.brush( QColorGroup::Button ));
    }

    if ( mi->iconSet() ) {		// draw iconset
	QIconSet::Mode mode = dis ? QIconSet::Disabled : QIconSet::Normal;
	if (act && !dis )
	    mode = QIconSet::Active;
	QPixmap pixmap = mi->iconSet()->pixmap( QIconSet::Small, mode );
	int pixw = pixmap.width();
	int pixh = pixmap.height();
	if ( act && !dis ) {
	    if ( !mi->isChecked() )
		qDrawShadePanel( p, x, y, checkcol, h, g, FALSE,  1, &g.brush( QColorGroup::Button ) );
	}
	QRect cr( x, y, checkcol, h );
	QRect pmr( 0, 0, pixw, pixh );
	pmr.moveCenter( cr.center() );
	p->setPen( itemg.text() );
	p->drawPixmap( pmr.topLeft(), pixmap );

	QBrush fill = act? g.brush( QColorGroup::Highlight ) :
			      g.brush( QColorGroup::Button );
	p->fillRect( x+checkcol + 1, y, w - checkcol - 1, h, fill);
    } else  if ( checkable ) {	// just "checking"...
	int mw = checkcol + motifItemFrame;
	int mh = h - 2*motifItemFrame;
	if ( mi->isChecked() ) {
	    drawCheckMark( p, x + motifItemFrame + 2,
			   y+motifItemFrame, mw, mh, itemg, act, dis );
	}
    }

    p->setPen( act ? g.highlightedText() : g.buttonText() );

    QColor discol;
    if ( dis ) {
	discol = itemg.text();
	p->setPen( discol );
    }

    int xm = motifItemFrame + checkcol + motifItemHMargin;

    if ( mi->custom() ) {
	int m = motifItemVMargin;
	p->save();
	if ( dis && !act ) {
	    p->setPen( g.light() );
	    mi->custom()->paint( p, itemg, act, enabled,
				 x+xm+1, y+m+1, w-xm-tab+1, h-2*m );
	    p->setPen( discol );
	}
	mi->custom()->paint( p, itemg, act, enabled,
			     x+xm, y+m, w-xm-tab+1, h-2*m );
	p->restore();
    }
    QString s = mi->text();
    if ( !s.isNull() ) {			// draw text
	int t = s.find( '\t' );
	int m = motifItemVMargin;
	const int text_flags = AlignVCenter|ShowPrefix | DontClip | SingleLine;
	if ( t >= 0 ) {				// draw tab text
	    if ( dis && !act ) {
		p->setPen( g.light() );
		p->drawText( x+w-tab-windowsRightBorder-motifItemHMargin-motifItemFrame+1,
			     y+m+1, tab, h-2*m, text_flags, s.mid( t+1 ));
		p->setPen( discol );
	    }
	    p->drawText( x+w-tab-windowsRightBorder-motifItemHMargin-motifItemFrame,
			 y+m, tab, h-2*m, text_flags, s.mid( t+1 ) );
	}
	if ( dis && !act )
	    p->setPen( discol );
	p->drawText( x+xm, y+m, w-xm-tab+1, h-2*m, text_flags, s, t );
    } else if ( mi->pixmap() ) {			// draw pixmap
	QPixmap *pixmap = mi->pixmap();
	if ( pixmap->depth() == 1 )
	    p->setBackgroundMode( OpaqueMode );
	p->drawPixmap( x+xm, y+motifItemFrame, *pixmap );
	if ( pixmap->depth() == 1 )
	    p->setBackgroundMode( TransparentMode );
    }
    if ( mi->popup() ) {			// draw sub menu arrow
	int dim = (h-2*motifItemFrame) / 2;
	if ( act ) {
	    if ( !dis )
		discol = white;
	    QColorGroup g2( discol, g.highlight(),
			    white, white,
			    dis ? discol : white,
			    discol, white );
	    drawArrow( p, RightArrow, FALSE,
			       x+w - motifArrowHMargin - motifItemFrame - dim,  y+h/2-dim/2,
			       dim, dim, g2, TRUE );
	} else {
	    drawArrow( p, RightArrow,
			       FALSE,
			       x+w - motifArrowHMargin - motifItemFrame - dim,  y+h/2-dim/2,
			       dim, dim, g, mi->isEnabled() );
	}
    }
#endif
}

void FlatStyle::getButtonShift( int &x, int &y )
{
    x = 0; y = 0;
}

//===========================================================================

FlatStyleImpl::FlatStyleImpl()
    : flat(0), ref(0)
{
}

FlatStyleImpl::~FlatStyleImpl()
{
    // We do not delete the style because Qt does that when a new style
    // is set.
}

QStyle *FlatStyleImpl::style()
{
    if ( !flat )
	flat = new FlatStyle();
    return flat;
}

QString FlatStyleImpl::name() const
{
    return qApp->translate("FlatStyle", "Flat", "Name of the style Flat");
}

QRESULT FlatStyleImpl::queryInterface( const QUuid &uuid, QUnknownInterface **iface )
{
    *iface = 0;
    if ( uuid == IID_QUnknown )
	*iface = this;
    else if ( uuid == IID_Style )
	*iface = this;
    else
	return QS_FALSE;

    (*iface)->addRef();
    return QS_OK;
}

Q_EXPORT_INTERFACE()
{
    Q_CREATE_INSTANCE( FlatStyleImpl )
}

#include "flat.moc"