karrowbutton.cpp
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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;
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 {
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 { }
00108
00109 #include "karrowbutton.moc"
This file is part of the documentation for kdeui Library Version 3.2.0.