Long live Qt 4.5!

1 files changed, 408 insertions, 0 deletions

diff --git a/src/gui/painting/qcssutil.cpp b/src/gui/painting/qcssutil.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@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) {
+        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) {
+        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) {
+        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) {
+        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