void wxImageBox::Paint()
{
// image width & height
m_imageWidth = (int) (GetImage().GetWidth()*m_scale);
m_imageHeight = (int) (GetImage().GetHeight()*m_scale);
if (m_imageWidth == 0 || m_imageHeight == 0)
{
delete m_buffer;
m_buffer = new wxBitmap(0,0);
return;
}
// get paintRect
wxRect paintRect = getPaintRect();
// make buffer 2 times as big as visible area (paintRect)
paintRect.x -= paintRect.width/2; if (paintRect.x < 0) paintRect.x = 0;
paintRect.y -= paintRect.height/2; if (paintRect.y < 0) paintRect.y = 0;
paintRect.width *= 2;
paintRect.height *= 2;
if (paintRect.GetRight() > m_imageWidth)
paintRect.width = m_imageWidth - paintRect.x;
if (paintRect.GetBottom() > m_imageHeight)
paintRect.height = m_imageHeight - paintRect.y;
m_bufferX = paintRect.x;
m_bufferY = paintRect.y;
// scale
//wxImage img = GetImage().Scale(m_imageWidth, m_imageHeight);
wxRect subRect = ScaleRect(paintRect, 1/m_scale);
wxImage img;
int imgw = GetImage().GetWidth();
int imgh = GetImage().GetHeight();
// if subRect equal image (+-1%)
if (subRect.x*100/imgw!=0 || subRect.y*100/imgh!=0 ||
(subRect.width-imgw)*100/imgw!=0 || (subRect.height-imgh)*100/imgh!=0)
img = GetImage().GetSubImage(subRect);
else
img = GetImage();
img = img.Scale(paintRect.width, paintRect.height);
PaintImg(img);
delete m_buffer;
m_buffer = new wxBitmap(img);
}
void LuminanceRangeWidget::showValuePointer( float value )
{
QRect fRect = getPaintRect();
int oldx = showVP ? getWindowX( valuePointer ) : -1;
valuePointer = value;
showVP = true;
int newx = getWindowX( valuePointer );
if( oldx == -1 ) oldx = newx;
QRect updateRect( min( oldx, newx ), fRect.top(),
max( oldx, newx ) - min(oldx, newx )+1, fRect.height() );
update( updateRect );
}
void wxImageBox::OnPaint(wxPaintEvent &event)
{
wxRect paintRect = getPaintRect();
if (paintRect.GetRight() >= m_imageWidth)
paintRect.width = m_imageWidth - paintRect.x;
if (paintRect.GetBottom() >= m_imageHeight)
paintRect.height = m_imageHeight - paintRect.y;
wxRect bufferRect(m_bufferX, m_bufferY,
m_buffer->GetWidth(), m_buffer->GetHeight());
if (m_repaint ||
paintRect.x < bufferRect.x ||
paintRect.y < bufferRect.y ||
paintRect.GetRight() > bufferRect.GetRight() ||
paintRect.GetBottom() > bufferRect.GetBottom())
{
Paint(); // update buffer
m_repaint = false;
//wxLogMessage("Repaint: %d,%d - %d,%d -> %d,%d - %d,%d",
// paintRect.x, paintRect.y, paintRect.width, paintRect.height,
// bufferRect.x, bufferRect.y, bufferRect.width, bufferRect.height);
}
wxPaintBox::OnPaint(event);
}
void LuminanceRangeWidget::mouseMoveEvent( QMouseEvent *me )
{
// printf( "MouseButton: %d\n", me->button() );
if( (me->buttons() & Qt::LeftButton) != 0 && dragMode != DRAG_NO ) {
if( mouseDragStart != DRAGNOTSTARTED ) {
QRect fRect = getPaintRect();
int windowCordShift = me->x() - mouseDragStart;
dragShift = (float)windowCordShift / (float)fRect.width() * (maxValue - minValue);
update();
}
} else {
QRect fRect = rect();
int winBegPos = getWindowX( windowMin );
int winEndPos = getWindowX( windowMax );
if( abs( me->x() - winBegPos ) < dragZoneMargin ) {
setCursor( QCursor( Qt::SplitHCursor ) );
dragMode = DRAG_MIN;
} else if( abs( me->x() - winEndPos ) < dragZoneMargin ) {
setCursor( QCursor( Qt::SplitHCursor ) );
dragMode = DRAG_MAX;
} else if( me->x() > winBegPos && me->x() < winEndPos ) {
setCursor( QCursor( Qt::SizeHorCursor ) );
dragMode = DRAG_MINMAX;
} else {
unsetCursor();
dragMode = DRAG_NO;
}
}
}
void LuminanceRangeWidget::paintEvent( QPaintEvent *pe )
{
{
QPainter p( this );
QRect fRect = getPaintRect();
if( fRect.width() < 50 ) // Does not make sense to paint anything
return;
// Paint range window
{
int x1, x2;
x1 = getWindowX( draggedMin() );
x2 = getWindowX( draggedMax() );
QColor selectionColor = mouseDragStart == DRAGNOTSTARTED ?
QColor( 0, 100, 255 ) : QColor( 0, 150, 255 );
p.fillRect( x1, fRect.top(), x2-x1, fRect.height(), QBrush( selectionColor ) );
}
// Paint histogram
if( histogramImage != NULL ) {
if( histogram == NULL || histogram->getBins() != fRect.width() ) {
delete histogram;
// Build histogram from at least 5000 pixels
int accuracy = histogramImage->getRows()*histogramImage->getCols()/5000;
if( accuracy < 1 ) accuracy = 1;
histogram = new Histogram( fRect.width(), accuracy );
histogram->computeLog( histogramImage, minValue, maxValue );
}
float maxP = histogram->getMaxP();
int i = 0;
p.setPen( Qt::green );
for( int x = fRect.left(); i < histogram->getBins(); x++, i++ ) {
if( histogram->getP(i) > 0 ) {
int barSize = (int)((float)fRect.height() * histogram->getP(i)/maxP);
p.drawLine( x, fRect.bottom(), x, fRect.bottom() - barSize );
}
}
}
// Paint scale
QFont labelFont( "SansSerif", 8 );
p.setFont( labelFont );
p.setPen( Qt::black );
QRect textBounding = p.boundingRect( fRect, Qt::AlignHCenter|Qt::AlignBottom, "-8" );
for( float x = ceil( minValue ); x <= floor( maxValue ); x++ ) {
int rx = getWindowX(x);
p.drawLine( rx, fRect.top(), rx, textBounding.top() );
char str[10];
sprintf( str, "%g", x );
p.drawText( rx-20, textBounding.top(), 40, textBounding.height(),
Qt::AlignHCenter|Qt::AlignBottom, str );
}
// Paint value pointer
if( showVP )
{
int x = getWindowX( valuePointer );
if( fRect.contains( x, fRect.y() ) ) {
p.setPen( Qt::yellow );
p.drawLine( x, fRect.top(), x, fRect.bottom() );
}
}
}
QFrame::paintEvent(pe);
}
