/*************************************************************************
Handler for event triggered when we lose capture of mouse input
*************************************************************************/
void Thumb::onCaptureLost(WindowEventArgs& e)
{
// default handling
PushButton::onCaptureLost(e);
d_beingDragged = false;
// trigger tracking ended event
WindowEventArgs args(this);
onThumbTrackEnded(args);
// send notification whenever thumb is released
onThumbPositionChanged(args);
}
/*************************************************************************
Handler for mouse movement events
*************************************************************************/
void Thumb::onMouseMove(MouseEventArgs& e)
{
// default processing
PushButton::onMouseMove(e);
// only react if we are being dragged
if (d_beingDragged)
{
Sizef parentSize(getParentPixelSize());
Vector2f delta;
float hmin, hmax, vmin, vmax;
delta = CoordConverter::screenToWindow(*this, e.position);
hmin = d_horzMin;
hmax = d_horzMax;
vmin = d_vertMin;
vmax = d_vertMax;
// calculate amount of movement
delta -= d_dragPoint;
delta.d_x /= parentSize.d_width;
delta.d_y /= parentSize.d_height;
//
// Calculate new (pixel) position for thumb
//
UVector2 newPos(getPosition());
if (d_horzFree)
{
newPos.d_x.d_scale += delta.d_x;
// limit value to within currently set range
newPos.d_x.d_scale = (newPos.d_x.d_scale < hmin) ? hmin : (newPos.d_x.d_scale > hmax) ? hmax : newPos.d_x.d_scale;
}
if (d_vertFree)
{
newPos.d_y.d_scale += delta.d_y;
// limit new position to within currently set range
newPos.d_y.d_scale = (newPos.d_y.d_scale < vmin) ? vmin : (newPos.d_y.d_scale > vmax) ? vmax : newPos.d_y.d_scale;
}
// update thumb position if needed
if (newPos != getPosition())
{
setPosition(newPos);
// send notification as required
if (d_hotTrack)
{
WindowEventArgs args(this);
onThumbPositionChanged(args);
}
}
}
++e.handled;
}
/*************************************************************************
Handler for mouse movement events
*************************************************************************/
void Thumb::onMouseMove(MouseEventArgs& e)
{
// default processing
PushButton::onMouseMove(e);
// only react if we are being dragged
if (d_beingDragged)
{
Vector2 delta;
float hmin, hmax, vmin, vmax;
// get some values as absolute pixel offsets
if (getMetricsMode() == Relative)
{
delta = relativeToAbsolute(screenToWindow(e.position));
hmax = relativeToAbsoluteX_impl(d_parent, d_horzMax);
hmin = relativeToAbsoluteX_impl(d_parent, d_horzMin);
vmax = relativeToAbsoluteY_impl(d_parent, d_vertMax);
vmin = relativeToAbsoluteY_impl(d_parent, d_vertMin);
}
else
{
delta = screenToWindow(e.position);
hmin = d_horzMin;
hmax = d_horzMax;
vmin = d_vertMin;
vmax = d_vertMax;
}
// calculate amount of movement in pixels
delta -= d_dragPoint;
//
// Calculate new (pixel) position for thumb
//
Point newPos(getAbsolutePosition());
if (d_horzFree)
{
newPos.d_x += delta.d_x;
// limit value to within currently set range
newPos.d_x = (newPos.d_x < hmin) ? hmin : (newPos.d_x > hmax) ? hmax : newPos.d_x;
}
if (d_vertFree)
{
newPos.d_y += delta.d_y;
// limit new position to within currently set range
newPos.d_y = (newPos.d_y < vmin) ? vmin : (newPos.d_y > vmax) ? vmax : newPos.d_y;
}
// update thumb position if needed
if (newPos != getAbsolutePosition())
{
if (getMetricsMode() == Relative)
{
newPos = absoluteToRelative_impl(d_parent, newPos);
}
setPosition(newPos);
// send notification as required
if (d_hotTrack)
{
WindowEventArgs args(this);
onThumbPositionChanged(args);
}
}
}
e.handled = true;
}
