qcssutil_p.h File Reference

#include "QtCore/qglobal.h"
#include "private/qcssparser_p.h"
#include "QtCore/qsize.h"

Go to the source code of this file.

Functions
void	qDrawBorder (QPainter *p, const QRect &rect, const QCss::BorderStyle *styles, const int *borders, const QBrush *colors, const QSize *radii)
void	qDrawEdge (QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2, qreal dw1, qreal dw2, QCss::Edge edge, QCss::BorderStyle style, QBrush c)
void	qDrawRoundedCorners (QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2, const QSizeF &r1, const QSizeF &r2, QCss::Edge edge, QCss::BorderStyle s, QBrush c)
void	qNormalizeRadii (const QRect &br, const QSize *radii, QSize *tlr, QSize *trr, QSize *blr, QSize *brr)

Function Documentation

qDrawBorder()

void qDrawBorder	(	QPainter *	p,
		const QRect &	rect,
		const QCss::BorderStyle *	styles,
		const int *	borders,
		const QBrush *	colors,
		const QSize *	radii
	)

Definition at line 348 of file qcssutil.cpp.

Referenced by QRenderRule::drawBorder(), and QRenderRule::drawOutline().

{
    const QRectF br(rect);
    QSize tlr, trr, blr, brr;
    qNormalizeRadii(rect, radii, &tlr, &trr, &blr, &brr);

    // Drawn in increasing order of precendence
    if (styles[BottomEdge] != BorderStyle_None && borders[BottomEdge] > 0) {
        qreal dw1 = (blr.width() || paintsOver(styles, colors, BottomEdge, LeftEdge)) ? 0 : borders[LeftEdge];
        qreal dw2 = (brr.width() || paintsOver(styles, colors, BottomEdge, RightEdge)) ? 0 : borders[RightEdge];
        qreal x1 = br.x() + blr.width();
        qreal y1 = br.y() + br.height() - borders[BottomEdge];
        qreal x2 = br.x() + br.width() - brr.width();
        qreal y2 = br.y() + br.height() ;

        qDrawEdge(p, x1, y1, x2, y2, dw1, dw2, BottomEdge, styles[BottomEdge], colors[BottomEdge]);
        if (blr.width() || brr.width())
            qDrawRoundedCorners(p, x1, y1, x2, y2, blr, brr, BottomEdge, styles[BottomEdge], colors[BottomEdge]);
    }
    if (styles[RightEdge] != BorderStyle_None && borders[RightEdge] > 0) {
        qreal dw1 = (trr.height() || paintsOver(styles, colors, RightEdge, TopEdge)) ? 0 : borders[TopEdge];
        qreal dw2 = (brr.height() || paintsOver(styles, colors, RightEdge, BottomEdge)) ? 0 : borders[BottomEdge];
        qreal x1 = br.x() + br.width() - borders[RightEdge];
        qreal y1 = br.y() + trr.height();
        qreal x2 = br.x() + br.width();
        qreal y2 = br.y() + br.height() - brr.height();

        qDrawEdge(p, x1, y1, x2, y2, dw1, dw2, RightEdge, styles[RightEdge], colors[RightEdge]);
        if (trr.height() || brr.height())
            qDrawRoundedCorners(p, x1, y1, x2, y2, trr, brr, RightEdge, styles[RightEdge], colors[RightEdge]);
    }
    if (styles[LeftEdge] != BorderStyle_None && borders[LeftEdge] > 0) {
        qreal dw1 = (tlr.height() || paintsOver(styles, colors, LeftEdge, TopEdge)) ? 0 : borders[TopEdge];
        qreal dw2 = (blr.height() || paintsOver(styles, colors, LeftEdge, BottomEdge)) ? 0 : borders[BottomEdge];
        qreal x1 = br.x();
        qreal y1 = br.y() + tlr.height();
        qreal x2 = br.x() + borders[LeftEdge];
        qreal y2 = br.y() + br.height() - blr.height();

        qDrawEdge(p, x1, y1, x2, y2, dw1, dw2, LeftEdge, styles[LeftEdge], colors[LeftEdge]);
        if (tlr.height() || blr.height())
            qDrawRoundedCorners(p, x1, y1, x2, y2, tlr, blr, LeftEdge, styles[LeftEdge], colors[LeftEdge]);
    }
    if (styles[TopEdge] != BorderStyle_None && borders[TopEdge] > 0) {
        qreal dw1 = (tlr.width() || paintsOver(styles, colors, TopEdge, LeftEdge)) ? 0 : borders[LeftEdge];
        qreal dw2 = (trr.width() || paintsOver(styles, colors, TopEdge, RightEdge)) ? 0 : borders[RightEdge];
        qreal x1 = br.x() + tlr.width();
        qreal y1 = br.y();
        qreal x2 = br.left() + br.width() - trr.width();
        qreal y2 = br.y() + borders[TopEdge];

        qDrawEdge(p, x1, y1, x2, y2, dw1, dw2, TopEdge, styles[TopEdge], colors[TopEdge]);
        if (tlr.width() || trr.width())
            qDrawRoundedCorners(p, x1, y1, x2, y2, tlr, trr, TopEdge, styles[TopEdge], colors[TopEdge]);
    }
}

qDrawEdge()

void qDrawEdge	(	QPainter *	p,
		qreal	x1,
		qreal	y1,
		qreal	x2,
		qreal	y2,
		qreal	dw1,
		qreal	dw2,
		QCss::Edge	edge,
		QCss::BorderStyle	style,
		QBrush	c
	)

Definition at line 187 of file qcssutil.cpp.

Referenced by QTextDocumentLayoutPrivate::drawBorder(), qDrawBorder(), and qDrawEdge().

{
    p->save();
    const qreal width = (edge == TopEdge || edge == BottomEdge) ? (y2-y1) : (x2-x1);

    if (width <= 2 && style == BorderStyle_Double)
        style = BorderStyle_Solid;

    switch (style) {
    case BorderStyle_Inset:
    case BorderStyle_Outset:
        if ((style == BorderStyle_Outset && (edge == TopEdge || edge == LeftEdge))
            || (style == BorderStyle_Inset && (edge == BottomEdge || edge == RightEdge)))
            c = c.color().lighter();
        // fall through!
    case BorderStyle_Solid: {
        p->setPen(Qt::NoPen);
        p->setBrush(c);
        if (width == 1 || (dw1 == 0 && dw2 == 0)) {
            p->drawRect(QRectF(x1, y1, x2-x1, y2-y1));
        } else { // draw trapezoid
            QPolygonF quad;
            switch (edge) {
            case TopEdge:
                quad << QPointF(x1, y1) << QPointF(x1 + dw1, y2)
                     << QPointF(x2 - dw2, y2) << QPointF(x2, y1);
                break;
            case BottomEdge:
                quad << QPointF(x1 + dw1, y1) << QPointF(x1, y2)
                     << QPointF(x2, y2) << QPointF(x2 - dw2, y1);
                break;
            case LeftEdge:
                quad << QPointF(x1, y1) << QPointF(x1, y2)
                     << QPointF(x2, y2 - dw2) << QPointF(x2, y1 + dw1);
                break;
            case RightEdge:
                quad << QPointF(x1, y1 + dw1) << QPointF(x1, y2 - dw2)
                     << QPointF(x2, y2) << QPointF(x2, y1);
                break;
            default:
                break;
            }
            p->drawConvexPolygon(quad);
        }
        break;
    }
    case BorderStyle_Dotted:
    case BorderStyle_Dashed:
    case BorderStyle_DotDash:
    case BorderStyle_DotDotDash:
        p->setPen(qPenFromStyle(c, width, style));
        if (width == 1)
            p->drawLine(QLineF(x1, y1, x2 - 1, y2 - 1));
        else if (edge == TopEdge || edge == BottomEdge)
            p->drawLine(QLineF(x1 + width/2, (y1 + y2)/2, x2 - width/2, (y1 + y2)/2));
        else
            p->drawLine(QLineF((x1+x2)/2, y1 + width/2, (x1+x2)/2, y2 - width/2));
        break;

    case BorderStyle_Double: {
        int wby3 = qRound(width/3);
        int dw1by3 = qRound(dw1/3);
        int dw2by3 = qRound(dw2/3);
        switch (edge) {
        case TopEdge:
            qDrawEdge(p, x1, y1, x2, y1 + wby3, dw1by3, dw2by3, TopEdge, BorderStyle_Solid, c);
            qDrawEdge(p, x1 + dw1 - dw1by3, y2 - wby3, x2 - dw2 + dw1by3, y2,
                      dw1by3, dw2by3, TopEdge, BorderStyle_Solid, c);
            break;
        case LeftEdge:
            qDrawEdge(p, x1, y1, x1 + wby3, y2, dw1by3, dw2by3, LeftEdge, BorderStyle_Solid, c);
            qDrawEdge(p, x2 - wby3, y1 + dw1 - dw1by3, x2, y2 - dw2 + dw2by3, dw1by3, dw2by3,
                      LeftEdge, BorderStyle_Solid, c);
            break;
        case BottomEdge:
            qDrawEdge(p, x1 + dw1 - dw1by3, y1, x2 - dw2 + dw2by3, y1 + wby3, dw1by3, dw2by3,
                      BottomEdge, BorderStyle_Solid, c);
            qDrawEdge(p, x1, y2 - wby3, x2, y2, dw1by3, dw2by3, BottomEdge, BorderStyle_Solid, c);
            break;
        case RightEdge:
            qDrawEdge(p, x2 - wby3, y1, x2, y2, dw1by3, dw2by3, RightEdge, BorderStyle_Solid, c);
            qDrawEdge(p, x1, y1 + dw1 - dw1by3, x1 + wby3, y2 - dw2 + dw2by3, dw1by3, dw2by3,
                      RightEdge, BorderStyle_Solid, c);
            break;
        default:
            break;
        }
        break;
    }
    case BorderStyle_Ridge:
    case BorderStyle_Groove: {
        BorderStyle s1, s2;
        if (style == BorderStyle_Groove) {
            s1 = BorderStyle_Inset;
            s2 = BorderStyle_Outset;
        } else {
            s1 = BorderStyle_Outset;
            s2 = BorderStyle_Inset;
        }
        int dw1by2 = qFloor(dw1/2), dw2by2 = qFloor(dw2/2);
        int wby2 = qRound(width/2);
        switch (edge) {
        case TopEdge:
            qDrawEdge(p, x1, y1, x2, y1 + wby2, dw1by2, dw2by2, TopEdge, s1, c);
            qDrawEdge(p, x1 + dw1by2, y1 + wby2, x2 - dw2by2, y2, dw1by2, dw2by2, TopEdge, s2, c);
            break;
        case BottomEdge:
            qDrawEdge(p, x1, y1 + wby2, x2, y2, dw1by2, dw2by2, BottomEdge, s1, c);
            qDrawEdge(p, x1 + dw1by2, y1, x2 - dw2by2, y1 + wby2, dw1by2, dw2by2, BottomEdge, s2, c);
            break;
        case LeftEdge:
            qDrawEdge(p, x1, y1, x1 + wby2, y2, dw1by2, dw2by2, LeftEdge, s1, c);
            qDrawEdge(p, x1 + wby2, y1 + dw1by2, x2, y2 - dw2by2, dw1by2, dw2by2, LeftEdge, s2, c);
            break;
        case RightEdge:
            qDrawEdge(p, x1 + wby2, y1, x2, y2, dw1by2, dw2by2, RightEdge, s1, c);
            qDrawEdge(p, x1, y1 + dw1by2, x1 + wby2, y2 - dw2by2, dw1by2, dw2by2, RightEdge, s2, c);
            break;
        default:
            break;
        }
    }
    default:
        break;
    }
    p->restore();
}

qDrawRoundedCorners()

void qDrawRoundedCorners	(	QPainter *	p,
		qreal	x1,
		qreal	y1,
		qreal	x2,
		qreal	y2,
		const QSizeF &	r1,
		const QSizeF &	r2,
		QCss::Edge	edge,
		QCss::BorderStyle	s,
		QBrush	c
	)

qNormalizeRadii()

void qNormalizeRadii	(	const QRect &	br,
		const QSize *	radii,
		QSize *	tlr,
		QSize *	trr,
		QSize *	blr,
		QSize *	brr
	)

Definition at line 316 of file qcssutil.cpp.

Referenced by QRenderRule::borderClip(), and qDrawBorder().

{
    *tlr = radii[0].expandedTo(QSize(0, 0));
    *trr = radii[1].expandedTo(QSize(0, 0));
    *blr = radii[2].expandedTo(QSize(0, 0));
    *brr = radii[3].expandedTo(QSize(0, 0));
    if (tlr->width() + trr->width() > br.width())
        *tlr = *trr = QSize(0, 0);
    if (blr->width() + brr->width() > br.width())
        *blr = *brr = QSize(0, 0);
    if (tlr->height() + blr->height() > br.height())
        *tlr = *blr = QSize(0, 0);
    if (trr->height() + brr->height() > br.height())
        *trr = *brr = QSize(0, 0);
}