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# karrowbutton.cpp

    00001 /* This file is part of the KDE libraries
    00002      Copyright (C) 2001 Frerich Raabe <raabe@kde.org>
    00003
    00004    This library is free software; you can redistribute it and/or
    00005    modify it under the terms of the GNU Library General Public
    00006    License version 2 as published by the Free Software Foundation.
    00007
    00008    This library is distributed in the hope that it will be useful,
    00009    but WITHOUT ANY WARRANTY; without even the implied warranty of
    00010    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00011      Library General Public License for more details.
    00012
    00013      You should have received a copy of the GNU Library General Public License
    00014      along with this library; see the file COPYING.LIB.  If not, write to
    00015      the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    00016      Boston, MA 02111-1307, USA.
    00017 */
    00018
    00019 #include "karrowbutton.h"
    00020
    00021 #include <qstyle.h>
    00022 #include <qpainter.h>
    00023
    00024 class KArrowButtonPrivate
    00025 {
    00026     public:
    00027         Qt::ArrowType arrow;
    00028 };
    00029
    00030 KArrowButton::KArrowButton(QWidget *parent, Qt::ArrowType arrow,
    00031         const char *name)
    00032     : QPushButton(parent, name)
    00033 {
    00034     d = new KArrowButtonPrivate();
    00035     d->arrow = arrow;
    00036 }
    00037
    00038 KArrowButton::~KArrowButton()
    00039 {
    00040     delete d;
    00041 }
    00042
    00043 QSize KArrowButton::sizeHint() const
    00044 {
    00045     return QSize( 12, 12 );
    00046 }
    00047
    00048 void KArrowButton::setArrowType(Qt::ArrowType a)
    00049 {
    00050     if (d->arrow != a) {
    00051         d->arrow = a;
    00052         repaint();
    00053     }
    00054 }
    00055 Qt::ArrowType KArrowButton::arrowType() const
    00056 {
    00057     return d->arrow;
    00058 }
    00059
    00060 void KArrowButton::drawButton(QPainter *p)
    00061 {
    00062     const unsigned int arrowSize = 8;
    00063     const unsigned int margin = 2;
    00064
    00065         p->fillRect( rect(), colorGroup().brush( QColorGroup::Background ) );
    00066     style().drawPrimitive( QStyle::PE_Panel, p, QRect( 0, 0, width(), height() ),
    00067                    colorGroup(),
    00068                    isDown() ? QStyle::Style_Sunken : QStyle::Style_Default,
    00069                    QStyleOption( 2, 0 ) );
    00070
    00071     if (static_cast<unsigned int>(width()) < arrowSize + margin ||
    00072         static_cast<unsigned int>(height()) < arrowSize + margin)
    00073         return; // don't draw arrows if we are too small
    00074
    00075     unsigned int x = 0, y = 0;
    00076     if (d->arrow == DownArrow) {
    00077         x = (width() - arrowSize) / 2;
    00078         y = height() - (arrowSize + margin);
    00079     } else if (d->arrow == UpArrow) {
    00080         x = (width() - arrowSize) / 2;
    00081         y = margin;
    00082     } else if (d->arrow == RightArrow) {
    00083         x = width() - (arrowSize + margin);
    00084         y = (height() - arrowSize) / 2;
    00085     } else { // arrowType == LeftArrow
    00086         x = margin;
    00087         y = (height() - arrowSize) / 2;
    00088     }
    00089
    00090     if (isDown()) {
    00091         x++;
    00092         y++;
    00093     }
    00094
    00095     QStyle::PrimitiveElement e = QStyle::PE_ArrowLeft;
    00096     switch (d->arrow)
    00097     {
    00098         case Qt::LeftArrow: e = QStyle::PE_ArrowLeft; break;
    00099         case Qt::RightArrow: e = QStyle::PE_ArrowRight; break;
    00100         case Qt::UpArrow: e = QStyle::PE_ArrowUp; break;
    00101         case Qt::DownArrow: e = QStyle::PE_ArrowDown; break;
    00102     }
    00103     int flags = QStyle::Style_Enabled;
    00104     if ( isDown() )
    00105         flags |= QStyle::Style_Down;
    00106     style().drawPrimitive( e, p, QRect( QPoint( x, y ), QSize( arrowSize, arrowSize ) ),
    00107                    colorGroup(), flags );
    00108 }
    00109
    00110 void KArrowButton::virtual_hook( int, void* )
    00111 { /*BASE::virtual_hook( id, data );*/ }
    00112
    00113 #include "karrowbutton.moc"

This file is part of the documentation for kdeui Library Version 3.4.1.
Documentation copyright © 1996-2004 the KDE developers.
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