kdeui Library API Documentation

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 00056 void KArrowButton::drawButton(QPainter *p) 00057 { 00058 const unsigned int arrowSize = 8; 00059 const unsigned int margin = 2; 00060 00061 p->fillRect( rect(), colorGroup().brush( QColorGroup::Background ) ); 00062 style().drawPrimitive( QStyle::PE_Panel, p, QRect( 0, 0, width(), height() ), 00063 colorGroup(), 00064 isDown() ? QStyle::Style_Sunken : QStyle::Style_Default, 00065 QStyleOption( 2, 0 ) ); 00066 00067 if (static_cast<unsigned int>(width()) < arrowSize + margin || 00068 static_cast<unsigned int>(height()) < arrowSize + margin) 00069 return; // don't draw arrows if we are too small 00070 00071 unsigned int x = 0, y = 0; 00072 if (d->arrow == DownArrow) { 00073 x = (width() - arrowSize) / 2; 00074 y = height() - (arrowSize + margin); 00075 } else if (d->arrow == UpArrow) { 00076 x = (width() - arrowSize) / 2; 00077 y = margin; 00078 } else if (d->arrow == RightArrow) { 00079 x = width() - (arrowSize + margin); 00080 y = (height() - arrowSize) / 2; 00081 } else { // arrowType == LeftArrow 00082 x = margin; 00083 y = (height() - arrowSize) / 2; 00084 } 00085 00086 if (isDown()) { 00087 x++; 00088 y++; 00089 } 00090 00091 QStyle::PrimitiveElement e = QStyle::PE_ArrowLeft; 00092 switch (d->arrow) 00093 { 00094 case Qt::LeftArrow: e = QStyle::PE_ArrowLeft; break; 00095 case Qt::RightArrow: e = QStyle::PE_ArrowRight; break; 00096 case Qt::UpArrow: e = QStyle::PE_ArrowUp; break; 00097 case Qt::DownArrow: e = QStyle::PE_ArrowDown; break; 00098 } 00099 int flags = QStyle::Style_Enabled; 00100 if ( isDown() ) 00101 flags |= QStyle::Style_Down; 00102 style().drawPrimitive( e, p, QRect( QPoint( x, y ), QSize( arrowSize, arrowSize ) ), 00103 colorGroup(), flags ); 00104 } 00105 00106 void KArrowButton::virtual_hook( int, void* ) 00107 { /*BASE::virtual_hook( id, data );*/ } 00108 00109 #include "karrowbutton.moc"
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This file is part of the documentation for kdeui Library Version 3.2.3.
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