void RangeHistogram::mouseMoveEvent(QMouseEvent *e)
{
QPoint pos = e->pos();
if(ValidRange() && (e->buttons() & Qt::LeftButton) && pos != m_MousePrev)
{
if(m_DragMode == DraggingMode::White)
{
float newWhite = (float)(pos.x() - totalSpace()) / (float)regionWidth();
setWhiteDelta(qBound(blackDelta() + m_MinRangeSize, newWhite, 1.0f));
}
else if(m_DragMode == DraggingMode::Black)
{
float newBlack = (float)(pos.x() - totalSpace()) / (float)regionWidth();
setBlackDelta(qBound(0.0f, newBlack, whiteDelta() - m_MinRangeSize));
}
emit rangeUpdated();
if(m_DragMode != DraggingMode::None)
update();
m_MousePrev = pos;
}
}
void RangeHistogram::mousePressEvent(QMouseEvent *e)
{
if(e->button() != Qt::LeftButton || !ValidRange())
return;
QRect r = rect();
r.marginsRemoved(QMargins(totalSpace(), totalSpace(), totalSpace(), totalSpace()));
int whiteX = (int)(whiteDelta() * r.width());
int blackX = (int)(blackDelta() * r.width());
QPointF whiteVec(whiteX - e->pos().x(), rect().height() - e->pos().y());
QPointF blackVec(blackX - e->pos().x(), e->pos().y());
float whitedist = (float)sqrt(whiteVec.x() * whiteVec.x() + whiteVec.y() * whiteVec.y());
float blackdist = (float)sqrt(blackVec.x() * blackVec.x() + blackVec.y() * blackVec.y());
if(whitedist < blackdist && whitedist < 18.0f)
m_DragMode = DraggingMode::White;
else if(blackdist < whitedist && blackdist < 18.0f)
m_DragMode = DraggingMode::Black;
else if(e->pos().x() > whiteX)
m_DragMode = DraggingMode::White;
else if(e->pos().x() < blackX)
m_DragMode = DraggingMode::Black;
if(m_DragMode == DraggingMode::White)
{
float newWhite = (float)(e->pos().x() - totalSpace()) / (float)regionWidth();
setWhiteDelta(qBound(blackDelta() + m_MinRangeSize, newWhite, 1.0f));
}
else if(m_DragMode == DraggingMode::Black)
{
float newBlack = (float)(e->pos().x() - totalSpace()) / (float)regionWidth();
setBlackDelta(qBound(0.0f, newBlack, whiteDelta() - m_MinRangeSize));
}
emit rangeUpdated();
if(m_DragMode != DraggingMode::None)
update();
m_MousePrev = e->pos();
}
void
iil4mitkImage::display (iil4mitkWidget* widget)
{
GLdouble planeX [] = {-1, 0, 0, regionWidth ()};
GLdouble planeY [] = {0, -1, 0, regionHeight ()};
if (!visible ()
|| (constraint () && (widget != constraint ())))
{
return;
}
if (_pixels)
{
assert (_rx + _rw <= _width);
assert (_ry + _rh <= _height);
GLboolean texturing = glIsEnabled (GL_TEXTURE_2D);
GLboolean blending = glIsEnabled (GL_BLEND);
glClipPlane (GL_CLIP_PLANE4, planeX);
glEnable (GL_CLIP_PLANE4);
glClipPlane (GL_CLIP_PLANE5, planeY);
glEnable (GL_CLIP_PLANE5);
if ((_model == INTENSITY_ALPHA) || (_model == COLOR_ALPHA) || (_model == RGB) || (_model == RGBA))
{
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glEnable (GL_TEXTURE_2D);
glMatrixMode (GL_MODELVIEW);
glPushMatrix ();
glColor4f (red (), green (), blue (), alpha ());
glTranslatef (x (), y (), 0.0);
drawTextures (widget);
glPopMatrix ();
glDisable (GL_CLIP_PLANE4);
glDisable (GL_CLIP_PLANE5);
if (texturing == GL_FALSE) glDisable (GL_TEXTURE_2D);
if (blending == GL_FALSE) glDisable (GL_BLEND);
}
}
