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., 51 Franklin Street, Fifth Floor, 00016 Boston, MA 02110-1301, 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"