--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/painting/qcssutil.cpp Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,408 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qcssutil_p.h"
+#include "private/qcssparser_p.h"
+#include "qpainter.h"
+#include <qmath.h>
+
+#ifndef QT_NO_CSSPARSER
+
+QT_BEGIN_NAMESPACE
+
+using namespace QCss;
+
+static QPen qPenFromStyle(const QBrush& b, qreal width, BorderStyle s)
+{
+ Qt::PenStyle ps = Qt::NoPen;
+
+ switch (s) {
+ case BorderStyle_Dotted:
+ ps = Qt::DotLine;
+ break;
+ case BorderStyle_Dashed:
+ ps = width == 1 ? Qt::DotLine : Qt::DashLine;
+ break;
+ case BorderStyle_DotDash:
+ ps = Qt::DashDotLine;
+ break;
+ case BorderStyle_DotDotDash:
+ ps = Qt::DashDotDotLine;
+ break;
+ case BorderStyle_Inset:
+ case BorderStyle_Outset:
+ case BorderStyle_Solid:
+ ps = Qt::SolidLine;
+ break;
+ default:
+ break;
+ }
+
+ return QPen(b, width, ps, Qt::FlatCap);
+}
+
+void qDrawRoundedCorners(QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2,
+ const QSizeF& r1, const QSizeF& r2,
+ Edge edge, BorderStyle s, QBrush c)
+{
+ const qreal pw = (edge == TopEdge || edge == BottomEdge) ? y2-y1 : x2-x1;
+ if (s == BorderStyle_Double) {
+ qreal wby3 = pw/3;
+ switch (edge) {
+ case TopEdge:
+ case BottomEdge:
+ qDrawRoundedCorners(p, x1, y1, x2, y1+wby3, r1, r2, edge, BorderStyle_Solid, c);
+ qDrawRoundedCorners(p, x1, y2-wby3, x2, y2, r1, r2, edge, BorderStyle_Solid, c);
+ break;
+ case LeftEdge:
+ qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
+ qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, LeftEdge, BorderStyle_Solid, c);
+ break;
+ case RightEdge:
+ qDrawRoundedCorners(p, x1, y1+1, x1+wby3, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
+ qDrawRoundedCorners(p, x2-wby3, y1+1, x2, y2, r1, r2, RightEdge, BorderStyle_Solid, c);
+ break;
+ default:
+ break;
+ }
+ return;
+ } else if (s == BorderStyle_Ridge || s == BorderStyle_Groove) {
+ BorderStyle s1, s2;
+ if (s == BorderStyle_Groove) {
+ s1 = BorderStyle_Inset;
+ s2 = BorderStyle_Outset;
+ } else {
+ s1 = BorderStyle_Outset;
+ s2 = BorderStyle_Inset;
+ }
+ int pwby2 = qRound(pw/2);
+ switch (edge) {
+ case TopEdge:
+ qDrawRoundedCorners(p, x1, y1, x2, y1 + pwby2, r1, r2, TopEdge, s1, c);
+ qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, TopEdge, s2, c);
+ break;
+ case BottomEdge:
+ qDrawRoundedCorners(p, x1, y1 + pwby2, x2, y2, r1, r2, BottomEdge, s1, c);
+ qDrawRoundedCorners(p, x1, y1, x2, y2-pwby2, r1, r2, BottomEdge, s2, c);
+ break;
+ case LeftEdge:
+ qDrawRoundedCorners(p, x1, y1, x1 + pwby2, y2, r1, r2, LeftEdge, s1, c);
+ qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, LeftEdge, s2, c);
+ break;
+ case RightEdge:
+ qDrawRoundedCorners(p, x1 + pwby2, y1, x2, y2, r1, r2, RightEdge, s1, c);
+ qDrawRoundedCorners(p, x1, y1, x2 - pwby2, y2, r1, r2, RightEdge, s2, c);
+ break;
+ default:
+ break;
+ }
+ } else if ((s == BorderStyle_Outset && (edge == TopEdge || edge == LeftEdge))
+ || (s == BorderStyle_Inset && (edge == BottomEdge || edge == RightEdge)))
+ c = c.color().lighter();
+
+ p->save();
+ qreal pwby2 = pw/2;
+ p->setBrush(Qt::NoBrush);
+ QPen pen = qPenFromStyle(c, pw, s);
+ pen.setCapStyle(Qt::SquareCap); // this eliminates the offby1 errors that we might hit below
+ p->setPen(pen);
+ switch (edge) {
+ case TopEdge:
+ if (!r1.isEmpty())
+ p->drawArc(QRectF(x1 - r1.width() + pwby2, y1 + pwby2,
+ 2*r1.width() - pw, 2*r1.height() - pw), 135*16, -45*16);
+ if (!r2.isEmpty())
+ p->drawArc(QRectF(x2 - r2.width() + pwby2, y1 + pwby2,
+ 2*r2.width() - pw, 2*r2.height() - pw), 45*16, 45*16);
+ break;
+ case BottomEdge:
+ if (!r1.isEmpty())
+ p->drawArc(QRectF(x1 - r1.width() + pwby2, y2 - 2*r1.height() + pwby2,
+ 2*r1.width() - pw, 2*r1.height() - pw), -90 * 16, -45 * 16);
+ if (!r2.isEmpty())
+ p->drawArc(QRectF(x2 - r2.width() + pwby2, y2 - 2*r2.height() + pwby2,
+ 2*r2.width() - pw, 2*r2.height() - pw), -90 * 16, 45 * 16);
+ break;
+ case LeftEdge:
+ if (!r1.isEmpty())
+ p->drawArc(QRectF(x1 + pwby2, y1 - r1.height() + pwby2,
+ 2*r1.width() - pw, 2*r1.height() - pw), 135*16, 45*16);
+ if (!r2.isEmpty())
+ p->drawArc(QRectF(x1 + pwby2, y2 - r2.height() + pwby2,
+ 2*r2.width() - pw, 2*r2.height() - pw), 180*16, 45*16);
+ break;
+ case RightEdge:
+ if (!r1.isEmpty())
+ p->drawArc(QRectF(x2 - 2*r1.width() + pwby2, y1 - r1.height() + pwby2,
+ 2*r1.width() - pw, 2*r1.height() - pw), 45*16, -45*16);
+ if (!r2.isEmpty())
+ p->drawArc(QRectF(x2 - 2*r2.width() + pwby2, y2 - r2.height() + pwby2,
+ 2*r2.width() - pw, 2*r2.height() - pw), 315*16, 45*16);
+ break;
+ default:
+ break;
+ }
+ p->restore();
+}
+
+
+void qDrawEdge(QPainter *p, qreal x1, qreal y1, qreal x2, qreal y2, qreal dw1, qreal dw2,
+ QCss::Edge edge, QCss::BorderStyle style, QBrush c)
+{
+ 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();
+}
+
+void qNormalizeRadii(const QRect &br, const QSize *radii,
+ QSize *tlr, QSize *trr, QSize *blr, QSize *brr)
+{
+ *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);
+}
+
+// Determines if Edge e1 draws over Edge e2. Depending on this trapezoids or rectanges are drawn
+static bool paintsOver(const QCss::BorderStyle *styles, const QBrush *colors, QCss::Edge e1, QCss::Edge e2)
+{
+ QCss::BorderStyle s1 = styles[e1];
+ QCss::BorderStyle s2 = styles[e2];
+
+ if (s2 == BorderStyle_None || colors[e2] == Qt::transparent)
+ return true;
+
+ if ((s1 == BorderStyle_Solid && s2 == BorderStyle_Solid) && (colors[e1] == colors[e2]))
+ return true;
+
+ return false;
+}
+
+void qDrawBorder(QPainter *p, const QRect &rect, const QCss::BorderStyle *styles,
+ const int *borders, const QBrush *colors, const QSize *radii)
+{
+ 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]);
+ }
+}
+
+#endif //QT_NO_CSSPARSER
+
+QT_END_NAMESPACE