C++ QBitmap::fill方法代码示例

QBitmap Slider::drawValue()
{
  QFontMetrics fm(this->font());
  QString st;
  st.setNum(value,'f',precision);
  QPainter painter;
  int _x,_y;
  QBitmap res;
  if (orientation == 0) {
    res.resize(width(),(height()-20)/2);
    res.fill(Qt::color0);
    painter.begin(&res);
    painter.setPen(Qt::color1);
    painter.setBrush(Qt::color1);
    painter.setFont(this->font());
    _x = (int)((res.width()-fm.width(st))/2);
    _y = (int)(res.height());
    painter.drawText(_x,_y,st);
  }
  else if (orientation == 1) {
         res.resize((width()-20)/2,height());
         res.fill(Qt::color0);
         painter.begin(&res);
         painter.setPen(Qt::color1);
         painter.setBrush(Qt::color1);
         painter.setFont(this->font());
         _x = 0;
         _y = (int)((res.height()+fm.height())/2);
         painter.drawText(_x,_y,st);
       }
  painter.end();
  return res;
}

HCURSOR QWindowsCursor::createPixmapCursor(const QPixmap &pixmap, int hotX, int hotY)
{
    HCURSOR cur = 0;
    QBitmap mask = pixmap.mask();
    if (mask.isNull()) {
        mask = QBitmap(pixmap.size());
        mask.fill(Qt::color1);
    }

    HBITMAP ic = qt_pixmapToWinHBITMAP(pixmap, /* HBitmapAlpha */ 2);
    const HBITMAP im = qt_createIconMask(mask);

    ICONINFO ii;
    ii.fIcon     = 0;
    ii.xHotspot  = hotX;
    ii.yHotspot  = hotY;
    ii.hbmMask   = im;
    ii.hbmColor  = ic;

    cur = CreateIconIndirect(&ii);

    DeleteObject(ic);
    DeleteObject(im);
    return cur;
}

QPixmap BitmapFactoryInst::resize(int w, int h, const QPixmap& p, Qt::BGMode bgmode) const
{
    if (bgmode == Qt::TransparentMode) {
        if (p.width() == 0 || p.height() == 0)
            w = 1;

        QPixmap pix = p;
        int x = pix.width () > w ? 0 : (w - pix.width ())/2;
        int y = pix.height() > h ? 0 : (h - pix.height())/2;

        if (x == 0 && y == 0)
            return pix;

        QPixmap pm (w,h);
        QBitmap mask (w,h);
        mask.fill(Qt::color0);

        QBitmap bm = pix.mask();
        if (!bm.isNull())
        {
            QPainter painter(&mask);
            painter.drawPixmap(QPoint(x, y), bm, QRect(0, 0, pix.width(), pix.height()));
            pm.setMask(mask);
        }
        else
        {
            pm.setMask(mask);
            pm = fillRect(x, y, pix.width(), pix.height(), pm, Qt::OpaqueMode);
        }

        QPainter pt;
        pt.begin( &pm );
        pt.drawPixmap(x, y, pix);
        pt.end();
        return pm;
    } else { // Qt::OpaqueMode
        QPixmap pix = p;

        if (pix.width() == 0 || pix.height() == 0)
            return pix; // do not resize a null pixmap

        QPalette pal = qApp->palette();
        QColor dl = pal.color(QPalette::Disabled, QPalette::Light);
        QColor dt = pal.color(QPalette::Disabled, QPalette::Text);

        QPixmap pm = pix;
        pm = QPixmap(w,h);
        pm.fill(dl);

        QPainter pt;
        pt.begin( &pm );
        pt.setPen( dl );
        pt.drawPixmap(1, 1, pix);
        pt.setPen( dt );
        pt.drawPixmap(0, 0, pix);
        pt.end();
        return pm;
    }
}

void BackgroundWidget::paintEvent( QPaintEvent *e )
{
    if ( !b_withart )
    {
        /* we just want background autofill */
        QWidget::paintEvent( e );
        return;
    }

    int i_maxwidth, i_maxheight;
    QPixmap pixmap = QPixmap( pixmapUrl );
    QPainter painter(this);
    QBitmap pMask;
    float f_alpha = 1.0;

    i_maxwidth  = __MIN( maximumWidth(), width() ) - MARGIN * 2;
    i_maxheight = __MIN( maximumHeight(), height() ) - MARGIN * 2;

    painter.setOpacity( property( "opacity" ).toFloat() );

    if ( height() > MARGIN * 2 )
    {
        /* Scale down the pixmap if the widget is too small */
        if( pixmap.width() > i_maxwidth || pixmap.height() > i_maxheight )
        {
            pixmap = pixmap.scaled( i_maxwidth, i_maxheight,
                            Qt::KeepAspectRatio, Qt::SmoothTransformation );
        }
        else
        if ( b_expandPixmap &&
             pixmap.width() < width() && pixmap.height() < height() )
        {
            /* Scale up the pixmap to fill widget's size */
            f_alpha = ( (float) pixmap.height() / (float) height() );
            pixmap = pixmap.scaled(
                    width() - MARGIN * 2,
                    height() - MARGIN * 2,
                    Qt::KeepAspectRatio,
                    ( f_alpha < .2 )? /* Don't waste cpu when not visible */
                        Qt::SmoothTransformation:
                        Qt::FastTransformation
                    );
            /* Non agressive alpha compositing when sizing up */
            pMask = QBitmap( pixmap.width(), pixmap.height() );
            pMask.fill( QColor::fromRgbF( 1.0, 1.0, 1.0, f_alpha ) );
            pixmap.setMask( pMask );
        }

        painter.drawPixmap(
                MARGIN + ( i_maxwidth - pixmap.width() ) /2,
                MARGIN + ( i_maxheight - pixmap.height() ) /2,
                pixmap);
    }
    QWidget::paintEvent( e );
}

kpToolWidgetSpraycanSize::kpToolWidgetSpraycanSize (QWidget *parent, const char *name)
    : kpToolWidgetBase (parent, name)
{
#if DEBUG_KP_TOOL_WIDGET_SPRAYCAN_SIZE
    kdDebug () << "kpToolWidgetSpraycanSize::kpToolWidgetSpraycanSize() CALLED!" << endl;
#endif

    for (int i = 0; i < int (sizeof (spraycanSizes) / sizeof (spraycanSizes [0])); i++)
    {
        int s = spraycanSizes [i];
        QString iconName = QString ("tool_spraycan_%1x%1").arg (s).arg(s);
        
    #if DEBUG_KP_TOOL_WIDGET_SPRAYCAN_SIZE
        kdDebug () << "\ticonName=" << iconName << endl;
    #endif

        QPixmap pixmap (s, s);
        pixmap.fill (Qt::white);
        
        QPainter painter (&pixmap);
        painter.drawPixmap (0, 0, UserIcon (iconName));
        painter.end ();

        QImage image = kpPixmapFX::convertToImage (pixmap);

        QBitmap mask (pixmap.width (), pixmap.height ());
        mask.fill (Qt::color0);

        painter.begin (&mask);
        painter.setPen (Qt::color1);
        
        for (int y = 0; y < image.height (); y++)
        {
            for (int x = 0; x < image.width (); x++)
            {
                if ((image.pixel (x, y) & RGB_MASK) == 0/*black*/)
                    painter.drawPoint (x, y);  // mark as opaque
            }
        }

        painter.end ();

        pixmap.setMask (mask);
        
        addOption (pixmap, i18n ("%1x%2").arg (s).arg (s)/*tooltip*/);
        if (i == 1)
            startNewOptionRow ();
    }

    finishConstruction (0, 0);
}

void OSDWidget::renderOSDText( const QString &text) {
	static QBitmap mask;

	// Set a sensible maximum size, don't cover the whole desktop or cross the screen
	//Actually unused but it definitly should
	//QSize max = QApplication::desktop() ->screen( m_screen ) ->size() - QSize( MARGIN*2 + 20, 100 );
	if(this->m_srt!=0){
		delete m_srt;
	}
	this->m_srt=new QSimpleRichText(text,this->font(),this->m_context);
	// The title cannnot be taller than one line
	// AlignAuto = align Arabic to the right, etc.
	int w=this->m_srt->widthUsed();
	int h=this->m_srt->height();
	osdBuffer.resize(w,h);
	mask.resize(w,h);

	// Start painting!
	QPainter bufferPainter( &osdBuffer );
	QPainter maskPainter( &mask );

	// Draw backing rectangle
	//bufferPainter.save();
	bufferPainter.setPen( Qt::black );
	bufferPainter.setBrush( backgroundColor() );
	bufferPainter.drawRoundRect( 0,0,w,h, 1500 /w, 1500/h);
	//bufferPainter.restore();
	this->m_srt->draw(&bufferPainter,0,0,QRect(),this->colorGroup());

	// Masking for transparency
	mask.fill( Qt::black );
	maskPainter.setBrush( Qt::white );
	maskPainter.drawRoundRect(0,0,w,h, 1500/w,1500/h);
	setMask( mask );

	//do last to reduce noticeable change when showing multiple OSDs in succession
	reposition(QSize(w,h));

	m_currentText = text;
	m_dirty = false;
	
	if(this->m_linking&&this==this->mouseGrabber()){
		this->releaseMouse();
		this->m_linking=false;
	}
	update();
}

HICON QPixmap::toWinHICON() const
{
    QBitmap maskBitmap = mask();
    if (maskBitmap.isNull()) {
        maskBitmap= QBitmap(size());
        maskBitmap.fill(Qt::color1);
    }

    ICONINFO ii;
    ii.fIcon    = true;
    ii.hbmMask  = qt_createIconMask(maskBitmap);
    ii.hbmColor = toWinHBITMAP(QPixmap::Alpha);
    ii.xHotspot = 0;
    ii.yHotspot = 0;

    HICON hIcon = CreateIconIndirect(&ii);

    DeleteObject(ii.hbmColor);
    DeleteObject(ii.hbmMask);

    return hIcon;
}

kpToolWidgetLineWidth::kpToolWidgetLineWidth (QWidget *parent, const char *name)
    : kpToolWidgetBase (parent, name)
{
    setInvertSelectedPixmap ();

    int numLineWidths = sizeof (lineWidths) / sizeof (lineWidths [0]);

    int w = (width () - 2/*margin*/) * 3 / 4;
    int h = (height () - 2/*margin*/ - (numLineWidths - 1)/*spacing*/) * 3 / (numLineWidths * 4);

    for (int i = 0; i < numLineWidths; i++)
    {
        QPixmap pixmap ((w <= 0 ? width () : w),
                        (h <= 0 ? height () : h));
        pixmap.fill (Qt::white);

        QBitmap maskBitmap (pixmap.width (), pixmap.height ());
        maskBitmap.fill (Qt::color0/*transparent*/);
        
        
        QPainter painter (&pixmap), maskPainter (&maskBitmap);
        painter.setPen (Qt::black), maskPainter.setPen (Qt::color1/*opaque*/);
        painter.setBrush (Qt::black), maskPainter.setBrush (Qt::color1/*opaque*/);

        QRect rect = QRect (0, (pixmap.height () - lineWidths [i]) / 2,
                            pixmap.width (), lineWidths [i]);
        painter.drawRect (rect), maskPainter.drawRect (rect);

        painter.end (), maskPainter.end ();
        
        
        pixmap.setMask (maskBitmap);

        addOption (pixmap, QString::number (lineWidths [i]));
        startNewOptionRow ();
    }

    finishConstruction (0, 0);
}

void QBalloonTip::balloon(const QPoint& pos, int msecs, bool showArrow)
{
    QRect scr = QApplication::desktop()->screenGeometry(pos);
    QSize sh = sizeHint();
    const int border = 1;
    const int ah = 18, ao = 18, aw = 18, rc = 7;
    bool arrowAtTop = (pos.y() + sh.height() + ah < scr.height());
    bool arrowAtLeft = (pos.x() + sh.width() - ao < scr.width());
    setContentsMargins(border + 3,  border + (arrowAtTop ? ah : 0) + 2, border + 3, border + (arrowAtTop ? 0 : ah) + 2);
    updateGeometry();
    sh  = sizeHint();

    int ml, mr, mt, mb;
    QSize sz = sizeHint();
    if (!arrowAtTop) {
        ml = mt = 0;
        mr = sz.width() - 1;
        mb = sz.height() - ah - 1;
    } else {
        ml = 0;
        mt = ah;
        mr = sz.width() - 1;
        mb = sz.height() - 1;
    }

    QPainterPath path;
#if defined(QT_NO_XSHAPE) && defined(Q_WS_X11)
    // XShape is required for setting the mask, so we just
    // draw an ugly square when its not available
    path.moveTo(0, 0);
    path.lineTo(sz.width() - 1, 0);
    path.lineTo(sz.width() - 1, sz.height() - 1);
    path.lineTo(0, sz.height() - 1);
    path.lineTo(0, 0);
    move(qMax(pos.x() - sz.width(), scr.left()), pos.y());
#else
    path.moveTo(ml + rc, mt);
    if (arrowAtTop && arrowAtLeft) {
        if (showArrow) {
            path.lineTo(ml + ao, mt);
            path.lineTo(ml + ao, mt - ah);
            path.lineTo(ml + ao + aw, mt);
        }
        move(qMax(pos.x() - ao, scr.left() + 2), pos.y());
    } else if (arrowAtTop && !arrowAtLeft) {
        if (showArrow) {
            path.lineTo(mr - ao - aw, mt);
            path.lineTo(mr - ao, mt - ah);
            path.lineTo(mr - ao, mt);
        }
        move(qMin(pos.x() - sh.width() + ao, scr.right() - sh.width() - 2), pos.y());
    }
    path.lineTo(mr - rc, mt);
    path.arcTo(QRect(mr - rc*2, mt, rc*2, rc*2), 90, -90);
    path.lineTo(mr, mb - rc);
    path.arcTo(QRect(mr - rc*2, mb - rc*2, rc*2, rc*2), 0, -90);
    if (!arrowAtTop && !arrowAtLeft) {
        if (showArrow) {
            path.lineTo(mr - ao, mb);
            path.lineTo(mr - ao, mb + ah);
            path.lineTo(mr - ao - aw, mb);
        }
        move(qMin(pos.x() - sh.width() + ao, scr.right() - sh.width() - 2),
             pos.y() - sh.height());
    } else if (!arrowAtTop && arrowAtLeft) {
        if (showArrow) {
            path.lineTo(ao + aw, mb);
            path.lineTo(ao, mb + ah);
            path.lineTo(ao, mb);
        }
        move(qMax(pos.x() - ao, scr.x() + 2), pos.y() - sh.height());
    }
    path.lineTo(ml + rc, mb);
    path.arcTo(QRect(ml, mb - rc*2, rc*2, rc*2), -90, -90);
    path.lineTo(ml, mt + rc);
    path.arcTo(QRect(ml, mt, rc*2, rc*2), 180, -90);

    // Set the mask
    QBitmap bitmap = QBitmap(sizeHint());
    bitmap.fill(Qt::color0);
    QPainter painter1(&bitmap);
    painter1.setPen(QPen(Qt::color1, border));
    painter1.setBrush(QBrush(Qt::color1));
    painter1.drawPath(path);
    setMask(bitmap);
#endif

    // Draw the border
    pixmap = QPixmap(sz);
    QPainter painter2(&pixmap);
    painter2.setPen(QPen(palette().color(QPalette::Window).darker(160), border));
    painter2.setBrush(palette().color(QPalette::Window));
    painter2.drawPath(path);

    if (msecs > 0)
        timerId = startTimer(msecs);
    show();
}

static HCURSOR create32BitCursor(const QPixmap &pixmap, int hx, int hy)
{
    HCURSOR cur = 0;
#if !defined(Q_WS_WINCE)
    QBitmap mask = pixmap.mask();
    if (mask.isNull()) {
        mask = QBitmap(pixmap.size());
        mask.fill(Qt::color1);
    }

    HBITMAP ic = pixmap.toWinHBITMAP(QPixmap::Alpha);
    HBITMAP im = qt_createIconMask(mask);

    ICONINFO ii;
    ii.fIcon     = 0;
    ii.xHotspot  = hx;
    ii.yHotspot  = hy;
    ii.hbmMask   = im;
    ii.hbmColor  = ic;

    cur = CreateIconIndirect(&ii);

    DeleteObject(ic);
    DeleteObject(im);
#elif defined(GWES_ICONCURS)
    QImage bbits, mbits;
    bool invb, invm;
    bbits = pixmap.toImage().convertToFormat(QImage::Format_Mono);
    mbits = pixmap.toImage().convertToFormat(QImage::Format_Mono);
    invb = bbits.colorCount() > 1 && qGray(bbits.color(0)) < qGray(bbits.color(1));
    invm = mbits.colorCount() > 1 && qGray(mbits.color(0)) < qGray(mbits.color(1));

    int sysW = GetSystemMetrics(SM_CXCURSOR);
    int sysH = GetSystemMetrics(SM_CYCURSOR);
    int sysN = qMax(1, sysW / 8);
    int n = qMax(1, bbits.width() / 8);
    int h = bbits.height();

    uchar* xBits = new uchar[sysH * sysN];
    uchar* xMask = new uchar[sysH * sysN];
    int x = 0;
    for (int i = 0; i < sysH; ++i) {
        if (i >= h) {
            memset(&xBits[x] , 255, sysN);
            memset(&xMask[x] ,   0, sysN);
            x += sysN;
        } else {
            int fillWidth = n > sysN ? sysN : n;
            uchar *bits = bbits.scanLine(i);
            uchar *mask = mbits.scanLine(i);
            for (int j = 0; j < fillWidth; ++j) {
                uchar b = bits[j];
                uchar m = mask[j];
                if (invb)
                    b ^= 0xFF;
                if (invm)
                    m ^= 0xFF;
                xBits[x] = ~m;
                xMask[x] = b ^ m;
                ++x;
            }
            for (int j = fillWidth; j < sysN; ++j ) {
                xBits[x] = 255;
                xMask[x] = 0;
                ++x;
            }
        }
    }

    cur = CreateCursor(qWinAppInst(), hx, hy, sysW, sysH,
        xBits, xMask);
#else
    Q_UNUSED(pixmap);
    Q_UNUSED(hx);
    Q_UNUSED(hy);
#endif
    return cur;
}