Diffstat (limited to 'noncore/unsupported/qpdf/qbusybar.cpp') (more/less context) (ignore whitespace changes)
| -rw-r--r-- | noncore/unsupported/qpdf/qbusybar.cpp | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/noncore/unsupported/qpdf/qbusybar.cpp b/noncore/unsupported/qpdf/qbusybar.cpp new file mode 100644 index 0000000..f5c62fa --- a/dev/null +++ b/noncore/unsupported/qpdf/qbusybar.cpp @@ -0,0 +1,132 @@ +#include <qapplication.h> +#include <qtimer.h> +#include <qpainter.h> + +#include "qbusybar.h" + + + +QBusyBar::QBusyBar ( QWidget *parent, const char *name, int flags ) : QWidget ( parent, name, flags | WRepaintNoErase ) +{ + m_busy = 0; + + m_div = 0; + m_pos = 0; + m_fade = 0; + m_fadecols = 0; + m_speed = 500; + + m_timer = new QTimer ( this ); + connect ( m_timer, SIGNAL( timeout ( )), this, SLOT( slotTimeout ( ))); + + setParameters ( 12, 8, 200 ); +} + +void QBusyBar::setParameters ( int d, int s, int v ) +{ + bool running = m_timer-> isActive ( ); + + if ( running ) + m_timer-> stop ( ); + + m_div = d; + m_speed = v; + + delete [] m_fadecols; + m_fade = s; + m_fadecols = new QColor [m_fade]; + + int rt, gt, bt; + int rf, gf, bf; + + colorGroup ( ). color ( QColorGroup::Highlight ). rgb ( &rf, &gf, &bf ); + colorGroup ( ). color ( QColorGroup::Background ). rgb ( &rt, >, &bt ); + + for ( int i = 0; i < s; i++ ) + m_fadecols [i]. setRgb ( rf + ( rt - rf ) * i / s, gf + ( gt - gf ) * i / s, bf + ( bt - bf ) * i / s ); + + if ( running ) { + m_pos = 0; + m_timer-> start ( m_speed ); + } +} + +QBusyBar::~QBusyBar ( ) +{ +} + +bool QBusyBar::isBusy ( ) const +{ + return m_busy; +} + +void QBusyBar::beginBusy ( ) +{ + setBusy ( true ); +} + +void QBusyBar::endBusy ( ) +{ + setBusy ( false ); +} + +void QBusyBar::setBusy ( bool b ) +{ + int busy = m_busy + ( b ? 1 : -1 ); + + if ( busy < 0 ) + busy = 0; + + if (( m_busy == 0 ) && ( busy > 0 )) { // Changed state to on + m_pos = 0; + m_timer-> start ( m_speed ); + update ( ); + } + else if (( m_busy > 0 ) && ( busy == 0 )) { // Changed state to off + m_timer-> stop ( ); + update ( ); + } + + m_busy = busy; +} + +void QBusyBar::slotTimeout ( ) +{ + m_pos++; + m_pos %= ( 2 * ( m_fade + m_div )); + + update ( ); +} + +void QBusyBar::paintEvent ( QPaintEvent *e ) +{ + QPainter p ( this ); + + QRect clip = e-> rect ( ); + + int x = 0; + int dx = width ( ) / m_div; + int y = clip. top ( ); + int dy = clip. height ( ); + + if ( m_busy ) { + int dir = ( m_pos < ( m_fade + m_div )) ? 1 : -1; + int pos = ( dir > 0 ) ? m_pos : ( 2 * ( m_div + m_fade )) - m_pos - m_fade - 1; + + for ( int i = 0; i < m_div; i++ ) { + int ind = ( pos - i ) * dir; + if (( ind < 0 ) || ( ind >= m_fade )) + ind = m_fade - 1; + + if ((( x + dx ) > clip. left ( )) || ( x < clip. right ( ))) + p. fillRect ( x, y, ( i < ( m_div - 1 )) ? dx : width ( ) - x, dy, m_fadecols [ind] ); + x += dx; + } + } + else { + p. fillRect ( e-> rect ( ), m_fadecols [m_fade - 1] ); + } +} + + + |