qpestyle.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。

    switch ( contents ) {
    case CT_PopupMenuItem:
	{
	    if ( !widget || data.isDefault() )
		break;
	    sz = QWindowsStyle::sizeFromContents( contents, widget, contentsSize, data );
	    sz = QSize( sz.width(), sz.height()-2 );
	    break;
	}
    default:
	sz = QWindowsStyle::sizeFromContents( contents, widget, contentsSize, data );
	break;
    }

    return sz;
}

#else

#include <qfontmetrics.h>
#include <qpalette.h>
#include <qdrawutil.h>
#include <qscrollbar.h>
#include <qbutton.h>
#include <qframe.h>
#include <qtabbar.h>

#define INCLUDE_MENUITEM_DEF
#include <qmenudata.h>
#include <qpopupmenu.h>

/*! */
QPEStyle::QPEStyle()
{
#if QT_VERSION < 0x030000
    setButtonMargin(buttonMargin());
    setScrollBarExtent(scrollBarExtent().width(),scrollBarExtent().height());
#endif
}

/*! */
QPEStyle::~QPEStyle()
{
}

/*! */
int QPEStyle::buttonMargin() const
{
    return 2;
}

/*! */
QSize QPEStyle::scrollBarExtent() const
{
    return QSize(13,13);
}

/*! */
void QPEStyle::polish ( QPalette & )
{
}

class QStyleHackWidget : public QWidget {
public:
    static void setGlobalBrushOrigin(QWidget *w) {
	((QStyleHackWidget*)w)->setWState(WState_GlobalBrushOrigin);
    }
    static void clearGlobalBrushOrigin(QWidget *w) {
	((QStyleHackWidget*)w)->clearWState(WState_GlobalBrushOrigin);
    }
};

/*! */
void QPEStyle::polish( QWidget *w )
{
    if ( w->inherits( "QListBox" ) ||
	 w->inherits( "QListView" ) ||
	 w->inherits( "QPopupMenu" ) ||
	 w->inherits( "QSpinBox" ) ) {
	QFrame *f = (QFrame *)w;
	f->setFrameShape( QFrame::StyledPanel );
	f->setLineWidth( 1 );
    }
    if (w->backgroundMode() == QWidget::PaletteBackground) {
	QWidget *p = w->parentWidget();
	if (!p || strcmp(p->name(), "qt_viewport"))
	    w->setBackgroundOrigin(QWidget::AncestorOrigin);
    }
    QStyleHackWidget::setGlobalBrushOrigin(w);
}

/*! */
void QPEStyle::unPolish( QWidget *w )
{
    if ( w->inherits( "QListBox" ) ||
	 w->inherits( "QListView" ) ||
	 w->inherits( "QPopupMenu" ) ||
	 w->inherits( "QSpinBox" ) ) {
	QFrame *f = (QFrame *)w;
	f->setFrameShape( QFrame::StyledPanel );
	f->setLineWidth( 2 );
    }
    w->setBackgroundOrigin(QWidget::WidgetOrigin);
    QStyleHackWidget::clearGlobalBrushOrigin(w);
}

/*! */
int QPEStyle::defaultFrameWidth() const
{
    return 1;
}

/*! */
void QPEStyle::drawPanel ( QPainter * p, int x, int y, int w, int h,
			    const QColorGroup &g, bool sunken, int lineWidth, const QBrush * fill )
{
    qDrawShadePanel( p, QRect(x, y, w, h), g, sunken, lineWidth, fill );
}

/*! */
void QPEStyle::drawButton( QPainter *p, int x, int y, int w, int h,
                                const QColorGroup &g, bool sunken, const QBrush* fill )
{
    QPen oldPen = p->pen();
    if ( sunken )
	p->setPen( g.dark() );
    else
	p->setPen( g.light() );

    int x2 = x+w-1;
    int y2 = y+h-1;

    p->drawLine( x, y, x, y2 );
    p->drawLine( x, y, x2, y );

    if ( sunken )
	p->setPen( g.light() );
    else
	p->setPen( g.dark() );

    p->drawLine( x2, y, x2, y2 );
    p->drawLine( x, y2, x2, y2 );
    p->setPen( oldPen );

    p->fillRect( x+1, y+1, w-2, h-2, fill?(*fill):g.brush(QColorGroup::Button) );
}

/*! */
void QPEStyle::drawButtonMask ( QPainter * p, int x, int y, int w, int h )
{
    p->fillRect( x, y, w, h, color1 );
}

/*! */
void QPEStyle::drawBevelButton( QPainter *p, int x, int y, int w, int h,
                                const QColorGroup &g, bool sunken, const QBrush* fill )
{
    drawButton( p, x, y, w, h, g, sunken, fill );
}

/*! */
QRect QPEStyle::comboButtonRect( int x, int y, int w, int h)
{
    return QRect(x+1, y+1, w-2-14, h-2);
}
      
       
/*! */
QRect QPEStyle::comboButtonFocusRect( int x, int y, int w, int h)
{
    return QRect(x+2, y+2, w-4-14, h-4);
}

/*! */
void QPEStyle::drawComboButton( QPainter *p, int x, int y, int w, int h,
				     const QColorGroup &g, bool sunken,
				     bool /*editable*/,
				     bool enabled,
				     const QBrush *fill )
{
    drawBevelButton( p, x, y, w, h, g, FALSE, fill );
    drawBevelButton( p, x+w-14, y, 14, h, g, sunken, fill );
    drawArrow( p, QStyle::DownArrow, sunken,
	       x+w-14+ 2, y+ 2, 14- 4, h- 4, g, enabled,
	       &g.brush( QColorGroup::Button ) );

}


/*! */
void QPEStyle::drawExclusiveIndicator ( QPainter * p, int x, int y, int w,
	int h, const QColorGroup & g, bool on, bool down, bool enabled )
{
    static const QCOORD pts1[] = {              // dark lines
        1,9, 1,8, 0,7, 0,4, 1,3, 1,2, 2,1, 3,1, 4,0, 7,0, 8,1, 9,1 };
    static const QCOORD pts4[] = {              // white lines
	2,10, 3,10, 4,11, 7,11, 8,10, 9,10, 10,9, 10,8, 11,7,
	11,4, 10,3, 10,2 };
    static const QCOORD pts5[] = {              // inner fill
	4,2, 7,2, 9,4, 9,7, 7,9, 4,9, 2,7, 2,4 };

    p->eraseRect( x, y, w, h );
    QPointArray a( QCOORDARRLEN(pts1), pts1 );
    a.translate( x, y );
    p->setPen( g.dark() );
    p->drawPolyline( a );
    a.setPoints( QCOORDARRLEN(pts4), pts4 );
    a.translate( x, y );
    p->setPen( g.light() );
    p->drawPolyline( a );
    a.setPoints( QCOORDARRLEN(pts5), pts5 );
    a.translate( x, y );
    QColor fillColor = ( down || !enabled ) ? g.button() : g.base();
    p->setPen( fillColor );
    p->setBrush( fillColor  ) ;
    p->drawPolygon( a );
    if ( on ) {
	p->setPen( NoPen );
	p->setBrush( g.text() );
	p->drawRect( x+5, y+4, 2, 4 );
	p->drawRect( x+4, y+5, 4, 2 );
    }
}

/*! */
void QPEStyle::drawIndicator ( QPainter * p, int x, int y, int w, int h,
	const QColorGroup & g, int state, bool down, bool enabled )
{

    QBrush fill;
    if ( state == QButton::NoChange ) {
	QBrush b = p->brush();
	QColor c = p->backgroundColor();
	p->setBackgroundMode( TransparentMode );
	p->setBackgroundColor( green );
	fill = QBrush(g.base(), Dense4Pattern);
	p->setBackgroundColor( c );
	p->setBrush( b );
    } else if ( down )
	fill = g.brush( QColorGroup::Button );
    else
	fill = g.brush( enabled ? QColorGroup::Base : QColorGroup::Background );
    drawPanel( p, x, y, w, h, g, TRUE, 1, &fill );
    if ( state != QButton::Off ) {
	QPointArray a( 7*2 );
	int i, xx, yy;
	xx = x+3;
	yy = y+5;
	for ( i=0; i<3; i++ ) {
	    a.setPoint( 2*i,   xx, yy );
	    a.setPoint( 2*i+1, xx, yy+2 );
	    xx++; yy++;
	}
	yy -= 2;
	for ( i=3; i<7; i++ ) {
	    a.setPoint( 2*i,   xx, yy );
	    a.setPoint( 2*i+1, xx, yy+2 );
	    xx++; yy--;
	}
	if ( state == QButton::NoChange ) {
	    p->setPen( g.dark() );
	} else {
	    p->setPen( g.text() );
	}
	p->drawLineSegments( a );
    }
}

#define HORIZONTAL	(sb->orientation() == QScrollBar::Horizontal)
#define VERTICAL	!HORIZONTAL
#define MOTIF_BORDER	2
#define SLIDER_MIN	9 // ### motif says 6 but that's too small

/*! \reimp */

void QPEStyle::scrollBarMetrics( const QScrollBar* sb, int &sliderMin, int &sliderMax, int &sliderLength, int& buttonDim )
{
    int maxLength;
    int length = HORIZONTAL ? sb->width()  : sb->height();
    int extent = HORIZONTAL ? sb->height() : sb->width();

    if ( length > (extent - 1)*2 )
	buttonDim = extent;
    else
	buttonDim = length/2 - 1;

    sliderMin = 0;
    maxLength  = length - buttonDim*2;

     if ( sb->maxValue() == sb->minValue() ) {
	sliderLength = maxLength;
     } else {
	sliderLength = (sb->pageStep()*maxLength)/
			(sb->maxValue()-sb->minValue()+sb->pageStep());
	uint range = sb->maxValue()-sb->minValue();
	if ( sliderLength < SLIDER_MIN || range > INT_MAX/2 )
	    sliderLength = SLIDER_MIN;
	if ( sliderLength > maxLength )
	    sliderLength = maxLength;
     }

    sliderMax = sliderMin + maxLength - sliderLength;
}

/*!\reimp
 */
QStyle::ScrollControl QPEStyle::scrollBarPointOver( const QScrollBar* sb, int sliderStart, const QPoint& p )
{
	if ( !sb->rect().contains( p ) )
	return NoScroll;
    int sliderMin, sliderMax, sliderLength, buttonDim, pos;
    scrollBarMetrics( sb, sliderMin, sliderMax, sliderLength, buttonDim );

    if (sb->orientation() == QScrollBar::Horizontal)
	pos = p.x();
    else
	pos = p.y();

    if (pos < sliderStart)
	return SubPage;
    if (pos < sliderStart + sliderLength)
	return Slider;
    if (pos < sliderMax + sliderLength)
	return AddPage;
    if (pos < sliderMax + sliderLength + buttonDim)
	return SubLine;
    return AddLine;
}

/*! \reimp */

void QPEStyle::drawScrollBarControls( QPainter* p, const QScrollBar* sb, int sliderStart, uint controls, uint activeControl )
{
#define ADD_LINE_ACTIVE ( activeControl == AddLine )
#define SUB_LINE_ACTIVE ( activeControl == SubLine )
    QColorGroup g  = sb->colorGroup();

    int sliderMin, sliderMax, sliderLength, buttonDim;
    scrollBarMetrics( sb, sliderMin, sliderMax, sliderLength, buttonDim );

    if ( controls == (AddLine | SubLine | AddPage | SubPage | Slider | First | Last ) )
	p->fillRect( 0, 0, sb->width(), sb->height(), g.brush( QColorGroup::Mid ));

    if (sliderStart > sliderMax) { // sanity check
	sliderStart = sliderMax;
    }

    int dimB = buttonDim;
    QRect addB;
    QRect subB;
    QRect addPageR;
    QRect subPageR;
    QRect sliderR;
    int addX, addY, subX, subY;
    int length = HORIZONTAL ? sb->width()  : sb->height();
    int extent = HORIZONTAL ? sb->height() : sb->width();

    if ( HORIZONTAL ) {
	subY = addY = ( extent - dimB ) / 2;
	subX = length - dimB - dimB;
	addX = length - dimB;
    } else {
	subX = addX = ( extent - dimB ) / 2;
	subY = length - dimB - dimB;
	addY = length - dimB;
    }

    int sliderEnd = sliderStart + sliderLength;
    int sliderW = extent;
    if ( HORIZONTAL ) {
	subB.setRect( subX,subY+1,dimB,dimB-1 );
	addB.setRect( addX,addY+1,dimB,dimB-1 );

	subPageR.setRect( 0, 0,
			  sliderStart+1, sliderW );
	addPageR.setRect( sliderEnd-1, 0, subX - sliderEnd+1, sliderW );
	sliderR .setRect( sliderStart, 1, sliderLength, sliderW-1 );

    } else {
	subB.setRect( subX+1,subY,dimB-1,dimB );
	addB.setRect( addX+1,addY,dimB-1,dimB );

	subPageR.setRect( 0, 0, sliderW,
			  sliderStart+1 );
	addPageR.setRect( 0, sliderEnd-1, sliderW, subY - sliderEnd+1 );
	sliderR .setRect( 1, sliderStart, sliderW-1, sliderLength );
    }

    bool maxedOut = (sb->maxValue() == sb->minValue());
    if ( controls & AddLine ) {
	drawBevelButton( p, addB.x(), addB.y(),
			 addB.width(), addB.height(), g,
			 ADD_LINE_ACTIVE);
	p->setPen(g.shadow());
	drawArrow( p, VERTICAL ? DownArrow : RightArrow,
		   FALSE, addB.x()+2, addB.y()+2,
		   addB.width()-4, addB.height()-4, g, !maxedOut,
				     &g.brush( QColorGroup::Button ));
    }
    if ( controls & SubLine ) {
	drawBevelButton( p, subB.x(), subB.y(),
			 subB.width(), subB.height(), g,
			 SUB_LINE_ACTIVE );
	p->setPen(g.shadow());
	drawArrow( p, VERTICAL ? UpArrow : LeftArrow,
		    FALSE, subB.x()+2, subB.y()+2,
		   subB.width()-4, subB.height()-4, g, !maxedOut,
				     &g.brush( QColorGroup::Button ));
    }


    if ( controls & SubPage )
	p->fillRect( subPageR.x(), subPageR.y(), subPageR.width(),
		    subPageR.height(), g.brush( QColorGroup::Mid ));
    if ( controls & AddPage )
	p->fillRect( addPageR.x(), addPageR.y(), addPageR.width(),
		     addPageR.height(), g.brush( QColorGroup::Mid ));
    if ( controls & Slider ) {
	QPoint bo = p->brushOrigin();
	if ( !sb->testWState(WState_GlobalBrushOrigin) )
	    p->setBrushOrigin(sliderR.topLeft());
        drawBevelButton( p, sliderR.x(), sliderR.y(),
                         sliderR.width(), sliderR.height(), g,
                         FALSE, &g.brush( QColorGroup::Button ) );
	p->setBrushOrigin(bo);
        drawRiffles( p, sliderR.x(), sliderR.y(),
                     sliderR.width(), sliderR.height(), g, HORIZONTAL );
    }

    // ### perhaps this should not be able to accept focus if maxedOut?
    if ( sb->hasFocus() && (controls & Slider) )
	p->drawWinFocusRect( sliderR.x()+2, sliderR.y()+2,