| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
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| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
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| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #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(); |
| Q_FALLTHROUGH(); |
| 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]) |
| && colors[e1].isOpaque()) { |
| 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 |
