bool Selector::event(SPEventContext *event_context, GdkEvent *event)
{
// The hidden control point will capture all events after it obtains the grab,
// but it relies on this function to initiate it. If we pass only first button
// press events here, it won't interfere with any other event handling.
switch (event->type) {
case GDK_BUTTON_PRESS:
// Do not pass button presses other than left button to the control point.
// This way middle click and right click can be handled in SPEventContext.
if (event->button.button == 1 && !event_context->space_panning) {
_dragger->setPosition(_desktop->w2d(event_point(event->motion)));
return _dragger->event(event_context, event);
}
break;
default: break;
}
return false;
}
int
Panner::handle ( int m )
{
int r = Fl_Widget::handle( m );
switch ( m )
{
case FL_ENTER:
case FL_LEAVE:
redraw();
return 1;
case FL_PUSH:
if ( Fl::event_button2() )
{
_bypassed = ! _bypassed;
redraw();
return 1;
}
else if ( Fl::event_button1() && ( drag = event_point() ) )
return 1;
else
return 0;
case FL_RELEASE:
if ( Fl::event_button1() && drag )
{
drag = NULL;
do_callback();
redraw();
return 1;
}
else
return 0;
case FL_MOUSEWHEEL:
{
/* TODO: place point on opposite face of sphere */
}
case FL_DRAG:
{
if ( ! drag )
return 0;
float X = Fl::event_x() - x();
float Y = Fl::event_y() - y();
int tx, ty, tw, th;
bbox( tx, ty, tw, th );
/* if ( _outs < 3 ) */
/* drag->angle( (float)(X / (tw / 2)) - 1.0f, 0.0f ); */
/* else */
drag->angle( (float)(X / (tw / 2)) - 1.0f, (float)(Y / (th / 2)) - 1.0f );
if ( when() & FL_WHEN_CHANGED )
do_callback();
redraw();
return 1;
}
}
return r;
// return 0;
}
int
Panner::handle ( int m )
{
int r = Fl_Group::handle( m );
switch ( m )
{
case FL_ENTER:
case FL_LEAVE:
_projection_choice->value(_projection_mode);
_range_choice->value(_range_mode);
redraw();
return 1;
case FL_PUSH:
{
if ( Fl::event_button1() || Fl::event_button3() )
drag = event_point();
if ( Fl::event_button2() )
{
/* if ( _projection == POLAR ) */
/* _projection = ORTHO; */
/* else */
/* _projection = POLAR; */
}
return 1;
}
case FL_RELEASE:
if ( drag )
{
do_callback();
drag = NULL;
redraw();
return 1;
}
else
return 0;
case FL_MOUSEWHEEL:
{
/* Point *p = event_point(); */
/* if ( p ) */
/* drag = p; */
/* if ( drag ) */
/* { */
/* // drag->elevation( drag->elevation() + Fl::event_dy()); */
/* drag->elevation( 0 - drag->elevation() ); */
/* do_callback(); */
/* redraw(); */
/* return 1; */
/* } */
return 1;
}
case FL_DRAG:
{
if ( ! drag )
return 0;
int tx, ty, tw, th;
bbox( tx, ty, tw, th );
float X = (float(Fl::event_x() - tx) / tw ) - 0.5f;
float Y = (float(Fl::event_y() - ty) / th) - 0.5f;
if ( Fl::event_button1() )
{
if ( POLAR == projection() )
set_polar( drag,X,Y );
else
{
if ( fabsf( X ) < 0.5f &&
fabsf( Y ) < 0.5f )
set_ortho( drag, X,Y );
}
}
else
set_polar_radius( drag,X,Y );
if ( when() & FL_WHEN_CHANGED )
do_callback();
damage(FL_DAMAGE_EXPOSE);
return 1;
}
}
return r;
// return 0;
}