/**************************************************************************** ** ** 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 "qdrawutil.h" #include "qbitmap.h" #include "qpixmapcache.h" #include "qapplication.h" #include "qpainter.h" #include "qpalette.h" QT_BEGIN_NAMESPACE /*! \fn void qDrawShadeLine(QPainter *painter, int x1, int y1, int x2, int y2, const QPalette &palette, bool sunken, int lineWidth, int midLineWidth) \relates QPainter Draws a horizontal (\a y1 == \a y2) or vertical (\a x1 == \a x2) shaded line using the given \a painter. Note that nothing is drawn if \a y1 != \a y2 and \a x1 != \a x2 (i.e. the line is neither horizontal nor vertical). The provided \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The given \a lineWidth specifies the line width for each of the lines; it is not the total line width. The given \a midLineWidth specifies the width of a middle line drawn in the QPalette::mid() color. The line appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded line: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 0 \sa qDrawShadeRect(), qDrawShadePanel(), QStyle */ void qDrawShadeLine(QPainter *p, int x1, int y1, int x2, int y2, const QPalette &pal, bool sunken, int lineWidth, int midLineWidth) { if (!(p && lineWidth >= 0 && midLineWidth >= 0)) { qWarning("qDrawShadeLine: Invalid parameters"); return; } int tlw = lineWidth*2 + midLineWidth; // total line width QPen oldPen = p->pen(); // save pen if (sunken) p->setPen(pal.color(QPalette::Dark)); else p->setPen(pal.light().color()); QPolygon a; int i; if (y1 == y2) { // horizontal line int y = y1 - tlw/2; if (x1 > x2) { // swap x1 and x2 int t = x1; x1 = x2; x2 = t; } x2--; for (i=0; idrawPolyline(a); } if (midLineWidth > 0) { p->setPen(pal.mid().color()); for (i=0; idrawLine(x1+lineWidth, y+lineWidth+i, x2-lineWidth, y+lineWidth+i); } if (sunken) p->setPen(pal.light().color()); else p->setPen(pal.dark().color()); for (i=0; idrawPolyline(a); } } else if (x1 == x2) { // vertical line int x = x1 - tlw/2; if (y1 > y2) { // swap y1 and y2 int t = y1; y1 = y2; y2 = t; } y2--; for (i=0; idrawPolyline(a); } if (midLineWidth > 0) { p->setPen(pal.mid().color()); for (i=0; idrawLine(x+lineWidth+i, y1+lineWidth, x+lineWidth+i, y2); } if (sunken) p->setPen(pal.light().color()); else p->setPen(pal.dark().color()); for (i=0; idrawPolyline(a); } } p->setPen(oldPen); } /*! \fn void qDrawShadeRect(QPainter *painter, int x, int y, int width, int height, const QPalette &palette, bool sunken, int lineWidth, int midLineWidth, const QBrush *fill) \relates QPainter Draws the shaded rectangle beginning at (\a x, \a y) with the given \a width and \a height using the provided \a painter. The provide \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors. The given \a lineWidth specifies the line width for each of the lines; it is not the total line width. The \a midLineWidth specifies the width of a middle line drawn in the QPalette::mid() color. The rectangle's interior is filled with the \a fill brush unless \a fill is 0. The rectangle appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded rectangle: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 1 \sa qDrawShadeLine(), qDrawShadePanel(), qDrawPlainRect(), QStyle */ void qDrawShadeRect(QPainter *p, int x, int y, int w, int h, const QPalette &pal, bool sunken, int lineWidth, int midLineWidth, const QBrush *fill) { if (w == 0 || h == 0) return; if (! (w > 0 && h > 0 && lineWidth >= 0 && midLineWidth >= 0)) { qWarning("qDrawShadeRect: Invalid parameters"); return; } QPen oldPen = p->pen(); if (sunken) p->setPen(pal.dark().color()); else p->setPen(pal.light().color()); int x1=x, y1=y, x2=x+w-1, y2=y+h-1; if (lineWidth == 1 && midLineWidth == 0) {// standard shade rectangle p->drawRect(x1, y1, w-2, h-2); if (sunken) p->setPen(pal.light().color()); else p->setPen(pal.dark().color()); QLineF lines[4] = { QLineF(x1+1, y1+1, x2-2, y1+1), QLineF(x1+1, y1+2, x1+1, y2-2), QLineF(x1, y2, x2, y2), QLineF(x2,y1, x2,y2-1) }; p->drawLines(lines, 4); // draw bottom/right lines } else { // more complicated int m = lineWidth+midLineWidth; int i, j=0, k=m; for (i=0; idrawLines(lines, 4); k++; } p->setPen(pal.mid().color()); j = lineWidth*2; for (i=0; idrawRect(x1+lineWidth+i, y1+lineWidth+i, w-j-1, h-j-1); j += 2; } if (sunken) p->setPen(pal.light().color()); else p->setPen(pal.dark().color()); k = m; for (i=0; idrawLines(lines, 4); k++; } } if (fill) { QBrush oldBrush = p->brush(); int tlw = lineWidth + midLineWidth; p->setPen(Qt::NoPen); p->setBrush(*fill); p->drawRect(x+tlw, y+tlw, w-2*tlw, h-2*tlw); p->setBrush(oldBrush); } p->setPen(oldPen); // restore pen } /*! \fn void qDrawShadePanel(QPainter *painter, int x, int y, int width, int height, const QPalette &palette, bool sunken, int lineWidth, const QBrush *fill) \relates QPainter Draws the shaded panel beginning at (\a x, \a y) with the given \a width and \a height using the provided \a painter and the given \a lineWidth. The given \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The panel's interior is filled with the \a fill brush unless \a fill is 0. The panel appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded panel: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 2 \sa qDrawWinPanel(), qDrawShadeLine(), qDrawShadeRect(), QStyle */ void qDrawShadePanel(QPainter *p, int x, int y, int w, int h, const QPalette &pal, bool sunken, int lineWidth, const QBrush *fill) { if (w == 0 || h == 0) return; if (!(w > 0 && h > 0 && lineWidth >= 0)) { qWarning("qDrawShadePanel: Invalid parameters"); } QColor shade = pal.dark().color(); QColor light = pal.light().color(); if (fill) { if (fill->color() == shade) shade = pal.shadow().color(); if (fill->color() == light) light = pal.midlight().color(); } QPen oldPen = p->pen(); // save pen QVector lines; lines.reserve(2*lineWidth); if (sunken) p->setPen(shade); else p->setPen(light); int x1, y1, x2, y2; int i; x1 = x; y1 = y2 = y; x2 = x+w-2; for (i=0; idrawLines(lines); lines.clear(); if (sunken) p->setPen(light); else p->setPen(shade); x1 = x; y1 = y2 = y+h-1; x2 = x+w-1; for (i=0; idrawLines(lines); if (fill) // fill with fill color p->fillRect(x+lineWidth, y+lineWidth, w-lineWidth*2, h-lineWidth*2, *fill); p->setPen(oldPen); // restore pen } /*! \internal This function draws a rectangle with two pixel line width. It is called from qDrawWinButton() and qDrawWinPanel(). c1..c4 and fill are used: 1 1 1 1 1 2 1 3 3 3 4 2 1 3 F F 4 2 1 3 F F 4 2 1 4 4 4 4 2 2 2 2 2 2 2 */ static void qDrawWinShades(QPainter *p, int x, int y, int w, int h, const QColor &c1, const QColor &c2, const QColor &c3, const QColor &c4, const QBrush *fill) { if (w < 2 || h < 2) // can't do anything with that return; QPen oldPen = p->pen(); QPoint a[3] = { QPoint(x, y+h-2), QPoint(x, y), QPoint(x+w-2, y) }; p->setPen(c1); p->drawPolyline(a, 3); QPoint b[3] = { QPoint(x, y+h-1), QPoint(x+w-1, y+h-1), QPoint(x+w-1, y) }; p->setPen(c2); p->drawPolyline(b, 3); if (w > 4 && h > 4) { QPoint c[3] = { QPoint(x+1, y+h-3), QPoint(x+1, y+1), QPoint(x+w-3, y+1) }; p->setPen(c3); p->drawPolyline(c, 3); QPoint d[3] = { QPoint(x+1, y+h-2), QPoint(x+w-2, y+h-2), QPoint(x+w-2, y+1) }; p->setPen(c4); p->drawPolyline(d, 3); if (fill) p->fillRect(QRect(x+2, y+2, w-4, h-4), *fill); } p->setPen(oldPen); } /*! \fn void qDrawWinButton(QPainter *painter, int x, int y, int width, int height, const QPalette &palette, bool sunken, const QBrush *fill) \relates QPainter Draws the Windows-style button specified by the given point (\a x, \a y}, \a width and \a height using the provided \a painter with a line width of 2 pixels. The button's interior is filled with the \a{fill} brush unless \a fill is 0. The given \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The button appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style()-> Use the drawing functions in QStyle to make widgets that follow the current GUI style. \sa qDrawWinPanel(), QStyle */ void qDrawWinButton(QPainter *p, int x, int y, int w, int h, const QPalette &pal, bool sunken, const QBrush *fill) { if (sunken) qDrawWinShades(p, x, y, w, h, pal.shadow().color(), pal.light().color(), pal.dark().color(), pal.button().color(), fill); else qDrawWinShades(p, x, y, w, h, pal.light().color(), pal.shadow().color(), pal.button().color(), pal.dark().color(), fill); } /*! \fn void qDrawWinPanel(QPainter *painter, int x, int y, int width, int height, const QPalette &palette, bool sunken, const QBrush *fill) \relates QPainter Draws the Windows-style panel specified by the given point(\a x, \a y), \a width and \a height using the provided \a painter with a line width of 2 pixels. The button's interior is filled with the \a fill brush unless \a fill is 0. The given \a palette specifies the shading colors. The panel appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded panel: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 3 \sa qDrawShadePanel(), qDrawWinButton(), QStyle */ void qDrawWinPanel(QPainter *p, int x, int y, int w, int h, const QPalette &pal, bool sunken, const QBrush *fill) { if (sunken) qDrawWinShades(p, x, y, w, h, pal.dark().color(), pal.light().color(), pal.shadow().color(), pal.midlight().color(), fill); else qDrawWinShades(p, x, y, w, h, pal.light().color(), pal.shadow().color(), pal.midlight().color(), pal.dark().color(), fill); } /*! \fn void qDrawPlainRect(QPainter *painter, int x, int y, int width, int height, const QColor &lineColor, int lineWidth, const QBrush *fill) \relates QPainter Draws the plain rectangle beginning at (\a x, \a y) with the given \a width and \a height, using the specified \a painter, \a lineColor and \a lineWidth. The rectangle's interior is filled with the \a fill brush unless \a fill is 0. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a plain rectangle: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 4 \sa qDrawShadeRect(), QStyle */ void qDrawPlainRect(QPainter *p, int x, int y, int w, int h, const QColor &c, int lineWidth, const QBrush *fill) { if (w == 0 || h == 0) return; if (!(w > 0 && h > 0 && lineWidth >= 0)) { qWarning("qDrawPlainRect: Invalid parameters"); } QPen oldPen = p->pen(); QBrush oldBrush = p->brush(); p->setPen(c); p->setBrush(Qt::NoBrush); for (int i=0; idrawRect(x+i, y+i, w-i*2 - 1, h-i*2 - 1); if (fill) { // fill with fill color p->setPen(Qt::NoPen); p->setBrush(*fill); p->drawRect(x+lineWidth, y+lineWidth, w-lineWidth*2, h-lineWidth*2); } p->setPen(oldPen); p->setBrush(oldBrush); } /***************************************************************************** Overloaded functions. *****************************************************************************/ /*! \fn void qDrawShadeLine(QPainter *painter, const QPoint &p1, const QPoint &p2, const QPalette &palette, bool sunken, int lineWidth, int midLineWidth) \relates QPainter \overload Draws a horizontal or vertical shaded line between \a p1 and \a p2 using the given \a painter. Note that nothing is drawn if the line between the points would be neither horizontal nor vertical. The provided \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The given \a lineWidth specifies the line width for each of the lines; it is not the total line width. The given \a midLineWidth specifies the width of a middle line drawn in the QPalette::mid() color. The line appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded line: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 5 \sa qDrawShadeRect(), qDrawShadePanel(), QStyle */ void qDrawShadeLine(QPainter *p, const QPoint &p1, const QPoint &p2, const QPalette &pal, bool sunken, int lineWidth, int midLineWidth) { qDrawShadeLine(p, p1.x(), p1.y(), p2.x(), p2.y(), pal, sunken, lineWidth, midLineWidth); } /*! \fn void qDrawShadeRect(QPainter *painter, const QRect &rect, const QPalette &palette, bool sunken, int lineWidth, int midLineWidth, const QBrush *fill) \relates QPainter \overload Draws the shaded rectangle specified by \a rect using the given \a painter. The provide \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors. The given \a lineWidth specifies the line width for each of the lines; it is not the total line width. The \a midLineWidth specifies the width of a middle line drawn in the QPalette::mid() color. The rectangle's interior is filled with the \a fill brush unless \a fill is 0. The rectangle appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded rectangle: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 6 \sa qDrawShadeLine(), qDrawShadePanel(), qDrawPlainRect(), QStyle */ void qDrawShadeRect(QPainter *p, const QRect &r, const QPalette &pal, bool sunken, int lineWidth, int midLineWidth, const QBrush *fill) { qDrawShadeRect(p, r.x(), r.y(), r.width(), r.height(), pal, sunken, lineWidth, midLineWidth, fill); } /*! \fn void qDrawShadePanel(QPainter *painter, const QRect &rect, const QPalette &palette, bool sunken, int lineWidth, const QBrush *fill) \relates QPainter \overload Draws the shaded panel at the rectangle specified by \a rect using the given \a painter and the given \a lineWidth. The given \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The panel's interior is filled with the \a fill brush unless \a fill is 0. The panel appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded panel: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 7 \sa qDrawWinPanel(), qDrawShadeLine(), qDrawShadeRect(), QStyle */ void qDrawShadePanel(QPainter *p, const QRect &r, const QPalette &pal, bool sunken, int lineWidth, const QBrush *fill) { qDrawShadePanel(p, r.x(), r.y(), r.width(), r.height(), pal, sunken, lineWidth, fill); } /*! \fn void qDrawWinButton(QPainter *painter, const QRect &rect, const QPalette &palette, bool sunken, const QBrush *fill) \relates QPainter \overload Draws the Windows-style button at the rectangle specified by \a rect using the given \a painter with a line width of 2 pixels. The button's interior is filled with the \a{fill} brush unless \a fill is 0. The given \a palette specifies the shading colors (\l {QPalette::light()}{light}, \l {QPalette::dark()}{dark} and \l {QPalette::mid()}{middle} colors). The button appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style()-> Use the drawing functions in QStyle to make widgets that follow the current GUI style. \sa qDrawWinPanel(), QStyle */ void qDrawWinButton(QPainter *p, const QRect &r, const QPalette &pal, bool sunken, const QBrush *fill) { qDrawWinButton(p, r.x(), r.y(), r.width(), r.height(), pal, sunken, fill); } /*! \fn void qDrawWinPanel(QPainter *painter, const QRect &rect, const QPalette &palette, bool sunken, const QBrush *fill) \overload Draws the Windows-style panel at the rectangle specified by \a rect using the given \a painter with a line width of 2 pixels. The button's interior is filled with the \a fill brush unless \a fill is 0. The given \a palette specifies the shading colors. The panel appears sunken if \a sunken is true, otherwise raised. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a shaded panel: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 8 \sa qDrawShadePanel(), qDrawWinButton(), QStyle */ void qDrawWinPanel(QPainter *p, const QRect &r, const QPalette &pal, bool sunken, const QBrush *fill) { qDrawWinPanel(p, r.x(), r.y(), r.width(), r.height(), pal, sunken, fill); } /*! \fn void qDrawPlainRect(QPainter *painter, const QRect &rect, const QColor &lineColor, int lineWidth, const QBrush *fill) \relates QPainter \overload Draws the plain rectangle specified by \a rect using the given \a painter, \a lineColor and \a lineWidth. The rectangle's interior is filled with the \a fill brush unless \a fill is 0. \warning This function does not look at QWidget::style() or QApplication::style(). Use the drawing functions in QStyle to make widgets that follow the current GUI style. Alternatively you can use a QFrame widget and apply the QFrame::setFrameStyle() function to display a plain rectangle: \snippet doc/src/snippets/code/src_gui_painting_qdrawutil.cpp 9 \sa qDrawShadeRect(), QStyle */ void qDrawPlainRect(QPainter *p, const QRect &r, const QColor &c, int lineWidth, const QBrush *fill) { qDrawPlainRect(p, r.x(), r.y(), r.width(), r.height(), c, lineWidth, fill); } #ifdef QT3_SUPPORT static void qDrawWinArrow(QPainter *p, Qt::ArrowType type, bool down, int x, int y, int w, int h, const QPalette &pal, bool enabled) { QPolygon a; // arrow polygon switch (type) { case Qt::UpArrow: a.setPoints(7, -3,1, 3,1, -2,0, 2,0, -1,-1, 1,-1, 0,-2); break; case Qt::DownArrow: a.setPoints(7, -3,-1, 3,-1, -2,0, 2,0, -1,1, 1,1, 0,2); break; case Qt::LeftArrow: a.setPoints(7, 1,-3, 1,3, 0,-2, 0,2, -1,-1, -1,1, -2,0); break; case Qt::RightArrow: a.setPoints(7, -1,-3, -1,3, 0,-2, 0,2, 1,-1, 1,1, 2,0); break; default: break; } if (a.isEmpty()) return; if (down) { x++; y++; } QPen savePen = p->pen(); // save current pen if (down) p->setBrushOrigin(p->brushOrigin() + QPoint(1,1)); p->fillRect(x, y, w, h, pal.brush(QPalette::Button)); if (down) p->setBrushOrigin(p->brushOrigin() - QPoint(1,1)); if (enabled) { a.translate(x+w/2, y+h/2); p->setPen(pal.foreground().color()); p->drawLine(a.at(0), a.at(1)); p->drawLine(a.at(2), a.at(2)); p->drawPoint(a[6]); } else { a.translate(x+w/2+1, y+h/2+1); p->setPen(pal.light().color()); p->drawLine(a.at(0), a.at(1)); p->drawLine(a.at(2), a.at(2)); p->drawPoint(a[6]); a.translate(-1, -1); p->setPen(pal.mid().color()); p->drawLine(a.at(0), a.at(1)); p->drawLine(a.at(2), a.at(2)); p->drawPoint(a[6]); } p->setPen(savePen); // restore pen } #endif // QT3_SUPPORT #if defined(Q_CC_MSVC) #pragma warning(disable: 4244) #endif #ifdef QT3_SUPPORT #ifndef QT_NO_STYLE_MOTIF // motif arrows look the same whether they are used or not // is this correct? static void qDrawMotifArrow(QPainter *p, Qt::ArrowType type, bool down, int x, int y, int w, int h, const QPalette &pal, bool) { QPolygon bFill; // fill polygon QPolygon bTop; // top shadow. QPolygon bBot; // bottom shadow. QPolygon bLeft; // left shadow. QTransform matrix; // xform matrix bool vertical = type == Qt::UpArrow || type == Qt::DownArrow; bool horizontal = !vertical; int dim = w < h ? w : h; int colspec = 0x0000; // color specification array if (dim < 2) // too small arrow return; if (dim > 3) { if (dim > 6) bFill.resize(dim & 1 ? 3 : 4); bTop.resize((dim/2)*2); bBot.resize(dim & 1 ? dim + 1 : dim); bLeft.resize(dim > 4 ? 4 : 2); bLeft.putPoints(0, 2, 0,0, 0,dim-1); if (dim > 4) bLeft.putPoints(2, 2, 1,2, 1,dim-3); bTop.putPoints(0, 4, 1,0, 1,1, 2,1, 3,1); bBot.putPoints(0, 4, 1,dim-1, 1,dim-2, 2,dim-2, 3,dim-2); for(int i=0; i 6) { // dim>6: must fill interior bFill.putPoints(0, 2, 1,dim-3, 1,2); if (dim & 1) // if size is an odd number bFill.setPoint(2, dim - 3, dim / 2); else bFill.putPoints(2, 2, dim-4,dim/2-1, dim-4,dim/2); } } else { if (dim == 3) { // 3x3 arrow pattern bLeft.setPoints(4, 0,0, 0,2, 1,1, 1,1); bTop .setPoints(2, 1,0, 1,0); bBot .setPoints(2, 1,2, 2,1); } else { // 2x2 arrow pattern bLeft.setPoints(2, 0,0, 0,1); bTop .setPoints(2, 1,0, 1,0); bBot .setPoints(2, 1,1, 1,1); } } if (type == Qt::UpArrow || type == Qt::LeftArrow) { matrix.translate(x, y); if (vertical) { matrix.translate(0, h - 1); matrix.rotate(-90); } else { matrix.translate(w - 1, h - 1); matrix.rotate(180); } if (down) colspec = horizontal ? 0x2334 : 0x2343; else colspec = horizontal ? 0x1443 : 0x1434; } else if (type == Qt::DownArrow || type == Qt::RightArrow) { matrix.translate(x, y); if (vertical) { matrix.translate(w-1, 0); matrix.rotate(90); } if (down) colspec = horizontal ? 0x2443 : 0x2434; else colspec = horizontal ? 0x1334 : 0x1343; } const QColor *cols[5]; cols[0] = 0; cols[1] = &pal.button().color(); cols[2] = &pal.mid().color(); cols[3] = &pal.light().color(); cols[4] = &pal.dark().color(); #define CMID *cols[(colspec>>12) & 0xf] #define CLEFT *cols[(colspec>>8) & 0xf] #define CTOP *cols[(colspec>>4) & 0xf] #define CBOT *cols[colspec & 0xf] QPen savePen = p->pen(); // save current pen QBrush saveBrush = p->brush(); // save current brush QTransform wxm = p->transform(); QPen pen(Qt::NoPen); const QBrush &brush = pal.brush(QPalette::Button); p->setPen(pen); p->setBrush(brush); p->setTransform(matrix, true); // set transformation matrix p->drawPolygon(bFill); // fill arrow p->setBrush(Qt::NoBrush); // don't fill p->setPen(CLEFT); p->drawLines(bLeft); p->setPen(CTOP); p->drawLines(bTop); p->setPen(CBOT); p->drawLines(bBot); p->setTransform(wxm); p->setBrush(saveBrush); // restore brush p->setPen(savePen); // restore pen #undef CMID #undef CLEFT #undef CTOP #undef CBOT } #endif // QT_NO_STYLE_MOTIF QRect qItemRect(QPainter *p, Qt::GUIStyle gs, int x, int y, int w, int h, int flags, bool enabled, const QPixmap *pixmap, const QString& text, int len) { QRect result; if (pixmap) { if ((flags & Qt::AlignVCenter) == Qt::AlignVCenter) y += h/2 - pixmap->height()/2; else if ((flags & Qt::AlignBottom) == Qt::AlignBottom) y += h - pixmap->height(); if ((flags & Qt::AlignRight) == Qt::AlignRight) x += w - pixmap->width(); else if ((flags & Qt::AlignHCenter) == Qt::AlignHCenter) x += w/2 - pixmap->width()/2; else if ((flags & Qt::AlignLeft) != Qt::AlignLeft && QApplication::isRightToLeft()) x += w - pixmap->width(); result = QRect(x, y, pixmap->width(), pixmap->height()); } else if (!text.isNull() && p) { result = p->boundingRect(QRect(x, y, w, h), flags, text.left(len)); if (gs == Qt::WindowsStyle && !enabled) { result.setWidth(result.width()+1); result.setHeight(result.height()+1); } } else { result = QRect(x, y, w, h); } return result; } void qDrawArrow(QPainter *p, Qt::ArrowType type, Qt::GUIStyle style, bool down, int x, int y, int w, int h, const QPalette &pal, bool enabled) { switch (style) { case Qt::WindowsStyle: qDrawWinArrow(p, type, down, x, y, w, h, pal, enabled); break; #ifndef QT_NO_STYLE_MOTIF case Qt::MotifStyle: qDrawMotifArrow(p, type, down, x, y, w, h, pal, enabled); break; #endif default: qWarning("qDrawArrow: Requested unsupported GUI style"); } } void qDrawItem(QPainter *p, Qt::GUIStyle gs, int x, int y, int w, int h, int flags, const QPalette &pal, bool enabled, const QPixmap *pixmap, const QString& text, int len , const QColor* penColor) { p->setPen(penColor?*penColor:pal.foreground().color()); if (pixmap) { QPixmap pm(*pixmap); bool clip = (flags & Qt::TextDontClip) == 0; if (clip) { if (pm.width() < w && pm.height() < h) clip = false; else p->setClipRect(x, y, w, h); } if ((flags & Qt::AlignVCenter) == Qt::AlignVCenter) y += h/2 - pm.height()/2; else if ((flags & Qt::AlignBottom) == Qt::AlignBottom) y += h - pm.height(); if ((flags & Qt::AlignRight) == Qt::AlignRight) x += w - pm.width(); else if ((flags & Qt::AlignHCenter) == Qt::AlignHCenter) x += w/2 - pm.width()/2; else if (((flags & Qt::AlignLeft) != Qt::AlignLeft) && QApplication::isRightToLeft()) // Qt::AlignAuto && rightToLeft x += w - pm.width(); if (!enabled) { if (pm.hasAlphaChannel()) { // pixmap with a mask pm = pm.mask(); } else if (pm.depth() == 1) { // monochrome pixmap, no mask ; #ifndef QT_NO_IMAGE_HEURISTIC_MASK } else { // color pixmap, no mask QString k; k.sprintf("$qt-drawitem-%llx", pm.cacheKey()); if (!QPixmapCache::find(k, pm)) { pm = pm.createHeuristicMask(); pm.setMask((QBitmap&)pm); QPixmapCache::insert(k, pm); } #endif } if (gs == Qt::WindowsStyle) { p->setPen(pal.light().color()); p->drawPixmap(x+1, y+1, pm); p->setPen(pal.text().color()); } } p->drawPixmap(x, y, pm); if (clip) p->setClipping(false); } else if (!text.isNull()) { if (gs == Qt::WindowsStyle && !enabled) { p->setPen(pal.light().color()); p->drawText(x+1, y+1, w, h, flags, text.left(len)); p->setPen(pal.text().color()); } p->drawText(x, y, w, h, flags, text.left(len)); } } #endif /*! \class QMargins \since 4.6 Holds the borders used to split a pixmap into nine segments in order to draw it, similar to \l{http://www.w3.org/TR/css3-background/} {CSS3 border-images}. \sa Qt::TileRule, QTileRules */ /*! \fn QMargins::QMargins(int margin) Constructs a QMargins with the top, left, bottom, and right margins set to \a margin. */ /*! \fn QMargins::QMargins(int topMargin, int leftMargin, int bottomMargin, int rightMargin) Constructs a QMargins with the given \a topMargin, \a leftMargin, \a bottomMargin, and \a rightMargin. */ /*! \class QTileRules \since 4.6 Holds the rules used to draw a pixmap or image split into nine segments, similar to \l{http://www.w3.org/TR/css3-background/}{CSS3 border-images}. \sa Qt::TileRule, QMargins */ /*! \fn QTileRules::QTileRules(Qt::TileRule horizontalRule, Qt::TileRule verticalRule) Constructs a QTileRules with the given \a horizontalRule and \a verticalRule. */ /*! \fn QTileRules::QTileRules(Qt::TileRule rule) Constructs a QTileRules with the given \a rule used for both the horizontal rule and the vertical rule. */ /*! \fn void qDrawBorderPixmap(QPainter *painter, const QRect &target, const QMargins &margins, const QPixmap &pixmap) \since 4.6 \relates QMargins Draws the given \a pixmap into the given \a target rectangle, using the given \a painter. The pixmap will be split into nine segments and drawn according to the \a margins structure. */ static inline void qVerticalRepeat(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source, void (*drawPixmap)(QPainter*, const QRect&, const QPixmap&, const QRect&)) { const int x = target.x(); const int width = target.width(); const int height = source.height(); const int bottom = target.bottom() - height; int y = target.y(); for (; y < bottom; y += height) (*drawPixmap)(painter, QRect(x, y, width, height), pixmap, source); const QRect remaining(source.x(), source.y(), source.width(), target.bottom() - y + 1); (*drawPixmap)(painter, QRect(x, y, width, remaining.height()), pixmap, remaining); } static inline void qHorizontalRepeat(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source, void (*drawPixmap)(QPainter*, const QRect&, const QPixmap&, const QRect&)) { const int y = target.y(); const int width = source.width(); const int height = target.height(); const int right = target.right() - width; int x = target.x(); for (; x < right; x += width) (*drawPixmap)(painter, QRect(x, y, width, height), pixmap, source); const QRect remaining(source.x(), source.y(), target.right() - x + 1, source.height()); (*drawPixmap)(painter, QRect(x, y, remaining.width(), height), pixmap, remaining); } static inline void qVerticalRound(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source, void (*drawPixmap)(QPainter*, const QRect&, const QPixmap&, const QRect&)) { // qreal based - slow on non-fpu devices const qreal x = target.x(); const qreal width = target.width(); const qreal verticalFactor = static_cast(target.height()) / static_cast(source.height()); const qreal verticalIncrement = static_cast(target.height()) / static_cast(verticalFactor + 0.5); const qreal bottom = target.bottom(); for (qreal y = static_cast(target.y()); y < bottom; y += verticalIncrement) (*drawPixmap)(painter, QRectF(x, y, width, verticalIncrement).toRect(), pixmap, source); } static inline void qHorizontalRound(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source, void (*drawPixmap)(QPainter*, const QRect&, const QPixmap&, const QRect&)) { // qreal based - slow on non-fpu devices const qreal y = target.y(); const qreal height = target.height(); const qreal horizontalFactor = static_cast(target.width()) / static_cast(source.width()); const qreal horizontalIncrement = static_cast(target.width()) / static_cast(horizontalFactor + 0.5); const qreal right = target.right(); for (qreal x = target.x(); x < right; x += horizontalIncrement) (*drawPixmap)(painter, QRectF(x, y, horizontalIncrement, height).toRect(), pixmap, source); } static inline void qDrawPixmap(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source) { painter->drawPixmap(target, pixmap, source); } static inline void qDrawVerticallyRepeatedPixmap(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source) { qVerticalRepeat(painter, target, pixmap, source, qDrawPixmap); } static inline void qDrawHorizontallyRepeatedPixmap(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source) { qHorizontalRepeat(painter, target, pixmap, source, qDrawPixmap); } static inline void qDrawVerticallyRoundedPixmap(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source) { qVerticalRound(painter, target, pixmap, source, qDrawPixmap); } static inline void qDrawHorizontallyRoundedPixmap(QPainter *painter, const QRect &target, const QPixmap &pixmap, const QRect &source) { qHorizontalRound(painter, target, pixmap, source, qDrawPixmap); } /*! \since 4.6 Draws the indicated \a sourceRect rectangle from the given \a pixmap into the given \a targetRect rectangle, using the given \a painter. The pixmap will be split into nine segments according to the given \a targetMargins and \a sourceMargins structures. Finally, the pixmap will be drawn according to the given \a rules. This function is used to draw a scaled pixmap, similar to \l{http://www.w3.org/TR/css3-background/}{CSS3 border-images} \sa Qt::TileRule, QTileRules, QMargins */ void qDrawBorderPixmap(QPainter *painter, const QRect &targetRect, const QMargins &targetMargins, const QPixmap &pixmap, const QRect &sourceRect, const QMargins &sourceMargins, const QTileRules &rules) { // source center const int sourceTop = sourceRect.top(); const int sourceLeft = sourceRect.left(); const int sourceCenterTop = sourceTop + sourceMargins.top; const int sourceCenterLeft = sourceLeft + sourceMargins.left; const int sourceCenterBottom = sourceRect.bottom() - sourceMargins.bottom + 1; const int sourceCenterRight = sourceRect.right() - sourceMargins.right + 1; const int sourceCenterWidth = sourceCenterRight - sourceMargins.left; const int sourceCenterHeight = sourceCenterBottom - sourceMargins.top; // target center const int targetTop = targetRect.top(); const int targetLeft = targetRect.left(); const int targetCenterTop = targetTop + targetMargins.top; const int targetCenterLeft = targetLeft + targetMargins.left; const int targetCenterBottom = targetRect.bottom() - targetMargins.bottom + 1; const int targetCenterRight = targetRect.right() - targetMargins.right + 1; const int targetCenterWidth = targetCenterRight - targetCenterLeft; const int targetCenterHeight = targetCenterBottom - targetCenterTop; // corners if (targetMargins.top > 0 && targetMargins.left > 0 && sourceMargins.top > 0 && sourceMargins.left > 0) { // top left const QRect targetTopLeftRect(targetLeft, targetTop, targetMargins.left, targetMargins.top); const QRect sourceTopLeftRect(sourceLeft, sourceTop, sourceMargins.left, sourceMargins.top); qDrawPixmap(painter, targetTopLeftRect, pixmap, sourceTopLeftRect); } if (targetMargins.top > 0 && targetMargins.right > 0 && sourceMargins.top > 0 && sourceMargins.right > 0) { // top right const QRect targetTopRightRect(targetCenterRight, targetTop, targetMargins.right, targetMargins.top); const QRect sourceTopRightRect(sourceCenterRight, sourceTop, sourceMargins.right, sourceMargins.top); qDrawPixmap(painter, targetTopRightRect, pixmap, sourceTopRightRect); } if (targetMargins.bottom > 0 && targetMargins.left > 0 && sourceMargins.bottom > 0 && sourceMargins.left > 0) { // bottom left const QRect targetBottomLeftRect(targetLeft, targetCenterBottom, targetMargins.left, targetMargins.bottom); const QRect sourceBottomLeftRect(sourceLeft, sourceCenterBottom, sourceMargins.left, sourceMargins.bottom); qDrawPixmap(painter, targetBottomLeftRect, pixmap, sourceBottomLeftRect); } if (targetMargins.bottom > 0 && targetMargins.right > 0 && sourceMargins.bottom > 0 && sourceMargins.right > 0) { // bottom right const QRect targetBottomRightRect(targetCenterRight, targetCenterBottom, targetMargins.right, targetMargins.bottom); const QRect sourceBottomRightRect(sourceCenterRight, sourceCenterBottom, sourceMargins.right, sourceMargins.bottom); qDrawPixmap(painter, targetBottomRightRect, pixmap, sourceBottomRightRect); } // horizontal edges switch (rules.horizontal) { case Qt::Stretch: if (targetMargins.top > 0 && sourceMargins.top > 0) { // top const QRect targetTopRect(targetCenterLeft, targetTop, targetCenterWidth, targetMargins.top); const QRect sourceTopRect(sourceCenterLeft, sourceTop, sourceCenterWidth, sourceMargins.top); qDrawPixmap(painter, targetTopRect, pixmap, sourceTopRect); } if (targetMargins.bottom > 0 && sourceMargins.bottom > 0) { // bottom const QRect targetBottomRect(targetCenterLeft, targetCenterBottom, targetCenterWidth, targetMargins.bottom); const QRect sourceBottomRect(sourceCenterLeft, sourceCenterBottom, sourceCenterWidth, sourceMargins.bottom); qDrawPixmap(painter, targetBottomRect, pixmap, sourceBottomRect); } break; case Qt::Repeat: if (targetMargins.top > 0 && sourceMargins.top > 0) { // top const QRect targetTopRect(targetCenterLeft, targetTop, targetCenterWidth, targetMargins.top); const QRect sourceTopRect(sourceCenterLeft, sourceTop, sourceCenterWidth, sourceMargins.top); qDrawHorizontallyRepeatedPixmap(painter, targetTopRect, pixmap, sourceTopRect); } if (targetMargins.bottom > 0 && sourceMargins.bottom > 0) { // bottom const QRect targetBottomRect(targetCenterLeft, targetCenterBottom, targetCenterWidth, targetMargins.bottom); const QRect sourceBottomRect(sourceCenterLeft, sourceCenterBottom, sourceCenterWidth, sourceMargins.bottom); qDrawHorizontallyRepeatedPixmap(painter, targetBottomRect, pixmap, sourceBottomRect); } break; case Qt::Round: if (targetMargins.top > 0 && sourceMargins.top > 0) { // top const QRect targetTopRect(targetCenterLeft, targetTop, targetCenterWidth, targetMargins.top); const QRect sourceTopRect(sourceCenterLeft, sourceTop, sourceCenterWidth, sourceMargins.top); qDrawHorizontallyRoundedPixmap(painter, targetTopRect, pixmap, sourceTopRect); } if (targetMargins.bottom > 0 && sourceMargins.bottom > 0) { // bottom const QRect targetBottomRect(targetCenterLeft, targetCenterBottom, targetCenterWidth, targetMargins.bottom); const QRect sourceBottomRect(sourceCenterLeft, sourceCenterBottom, sourceCenterWidth, sourceMargins.bottom); qDrawHorizontallyRoundedPixmap(painter, targetBottomRect, pixmap, sourceBottomRect); } break; } // vertical edges switch (rules.vertical) { case Qt::Stretch: if (targetMargins.left > 0 && sourceMargins.left > 0) { // left const QRect targetLeftRect(targetLeft, targetCenterTop, targetMargins.left, targetCenterHeight); const QRect sourceLeftRect(sourceLeft, sourceCenterTop, sourceMargins.left, sourceCenterHeight); qDrawPixmap(painter, targetLeftRect, pixmap, sourceLeftRect); } if (targetMargins.right > 0 && sourceMargins.right > 0) { // right const QRect targetRightRect(targetCenterRight, targetCenterTop, targetMargins.right, targetCenterHeight); const QRect sourceRightRect(sourceCenterRight, sourceCenterTop, sourceMargins.right, sourceCenterHeight); qDrawPixmap(painter, targetRightRect, pixmap, sourceRightRect); } break; case Qt::Repeat: if (targetMargins.left > 0 && sourceMargins.left > 0) { // left const QRect targetLeftRect(targetLeft, targetCenterTop, targetMargins.left, targetCenterHeight); const QRect sourceLeftRect(sourceLeft, sourceCenterTop, sourceMargins.left, sourceCenterHeight); qDrawVerticallyRepeatedPixmap(painter, targetLeftRect, pixmap, sourceLeftRect); } if (targetMargins.right > 0 && sourceMargins.right > 0) { // right const QRect targetRightRect(targetCenterRight, targetCenterTop, targetMargins.right, targetCenterHeight); const QRect sourceRightRect(sourceCenterRight, sourceCenterTop, sourceMargins.right, sourceCenterHeight); qDrawVerticallyRepeatedPixmap(painter, targetRightRect, pixmap, sourceRightRect); } break; case Qt::Round: if (targetMargins.left > 0 && sourceMargins.left > 0) { // left const QRect targetLeftRect(targetLeft, targetCenterTop, targetMargins.left, targetCenterHeight); const QRect sourceLeftRect(sourceLeft, sourceCenterTop, sourceMargins.left, sourceCenterHeight); qDrawVerticallyRoundedPixmap(painter, targetLeftRect, pixmap, sourceLeftRect); } if (targetMargins.right > 0 && sourceMargins.right > 0) { // right const QRect targetRightRect(targetCenterRight, targetCenterTop, targetMargins.right, targetCenterHeight); const QRect sourceRightRect(sourceCenterRight, sourceCenterTop, sourceMargins.right, sourceCenterHeight); qDrawVerticallyRoundedPixmap(painter, targetRightRect, pixmap, sourceRightRect); } break; } // center if (targetCenterWidth > 0 && targetCenterHeight > 0 && sourceCenterWidth > 0 && sourceCenterHeight > 0) { const QRect targetCenterRect(targetCenterLeft, targetCenterTop, targetCenterWidth, targetCenterHeight); const QRect sourceCenterRect(sourceCenterLeft, sourceCenterTop, sourceCenterWidth, sourceCenterHeight); switch (rules.horizontal) { case Qt::Stretch: switch (rules.vertical) { case Qt::Stretch: // stretch stretch qDrawPixmap(painter, targetCenterRect, pixmap, sourceCenterRect); break; case Qt::Repeat: // stretch repeat qVerticalRepeat(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawPixmap); break; case Qt::Round: // stretch round qVerticalRound(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawPixmap); break; } break; case Qt::Repeat: switch (rules.vertical) { case Qt::Stretch: // repeat stretch qHorizontalRepeat(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawPixmap); break; case Qt::Repeat: // repeat repeat qVerticalRepeat(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawHorizontallyRepeatedPixmap); break; case Qt::Round: // repeat round qVerticalRound(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawHorizontallyRepeatedPixmap); break; } break; case Qt::Round: switch (rules.vertical) { case Qt::Stretch: // round stretch qHorizontalRound(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawPixmap); break; case Qt::Repeat: // round repeat qHorizontalRound(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawVerticallyRepeatedPixmap); break; case Qt::Round: // round round qHorizontalRound(painter, targetCenterRect, pixmap, sourceCenterRect, qDrawVerticallyRoundedPixmap); break; } break; } } } QT_END_NAMESPACE